Fluid heater

Abstract

A fluid heater according to an embodiment of the present invention may comprise: a substrate; an insulating layer formed on the substrate; a heat-generating element formed on the insulating layer and composed of a plurality of conductor tracks; and an electrode connected in parallel to ends of the conductor tracks having the same current direction among the plurality of the conductor tracks.

Description

Fluid heating heater

[0001] The present invention relates to a fluid heating heater, and more specifically, to a fluid heating heater for heating a fluid, such as coolant, circulating inside a vehicle.

[0002] Under the policy of environmentally friendly industrial development and the development of energy sources to replace fossil fuels, electric vehicles, hybrid cars, and fuel cell vehicles are the sectors receiving the most attention in the automotive industry recently. However, unlike conventional vehicles using petroleum-based engines, electric, hybrid, and fuel cell vehicles cannot or do not allow the application of heating systems using coolant.

[0003] In other words, in the case of conventional vehicles powered by petroleum-based engines, a significant amount of heat is generated from the engine. Consequently, a cooling water circulation system is provided to cool the engine, and the heat absorbed by the cooling water is utilized for interior heating. However, since electric vehicles, hybrid vehicles, and fuel cell vehicles do not generate as much heat as the engine, there were limitations to using these conventional heating methods.

[0004] Accordingly, various studies are being conducted on electric vehicles, hybrid vehicles, and fuel cell vehicles, such as adding a heat pump to the air conditioning system to use it as a heat source, or providing a separate heat source like an electric heater. Among these, electric heaters are currently widely used because they can heat the coolant more easily without significantly affecting the air conditioning system.

[0005] Referring to U.S. Patent No. 10939505 (Title: Electrical heating system for a motor vehicle), only a portion of the conductor track (12, heating element) is divided and arranged in parallel, while the portion where the electrodes are connected is not divided. In other words, the current is branched into a conductor with a narrower width at the portion where the conductors are divided in parallel, thereby improving electrical characteristics; however, since the width of the conductor widens again at the end where the currents merge, there was a problem of current concentration occurring depending on the structure and configuration of the electrode portion.

[0006] One embodiment of the present invention provides a fluid heating heater that can reduce current concentration at bending parts (corner parts, deflection parts) of a conductor track and prevent local temperature rise by electrically connecting electrodes in parallel to the ends of conductor tracks constituting a heating element.

[0007] In addition, one embodiment of the present invention provides a fluid heating heater capable of improving adhesion through additional contact surfaces in the vertical direction by forming electrodes by a copper thermal spraying process so as to contact not only the surface of the heating element but also the corresponding side between the heating elements.

[0008] In addition, one embodiment of the present invention provides a fluid heating heater in which a pair of electrodes are spaced apart and arranged along the direction of travel of a conductor track constituting a heating element, thereby allowing the distance between the electrodes to be sufficiently widened and making it easy to secure an insulation distance between the electrodes.

[0009] In addition, one embodiment of the present invention provides a fluid heating heater in which an electrode is disposed on a conductor track located on the inner side of the outermost portion, so that the distance from the substrate is greater than that of the electrode on the conductor track located on the outermost portion, thereby facilitating the securing of an insulation distance.

[0010] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below.

[0011] A fluid heating heater according to one embodiment of the present invention may include a substrate; an insulating layer formed on the substrate; a heating element formed on the insulating layer and composed of a plurality of conductor tracks; and an electrode connected in parallel to the end of a conductor track having the same current direction among the plurality of conductor tracks.

[0012] The heating element is formed in a shape that starts from the outside and rolls inward, and a deflection section may be formed on the inside where the direction of the current is switched to the opposite direction.

[0013] The heating element is composed of a conductor track through which current flows, and the conductor track may include at least one first conductor track through which current flows in a first direction; and at least one second conductor track through which current flows in a second direction.

[0014] The electrode may be formed to be in contact with the upper surface of the heating element and to be in contact with the side corresponding to the space between the heating elements.

[0015] The above electrode may be formed to contact the upper surface of the insulating layer formed between the heating elements.

[0016] The above electrode can be formed through a thermal spray process.

[0017] It may further include an electrode connection part electrically connected to the above electrode.

[0018] The above electrode connection part can be connected to make surface contact with the surface of the electrode.

[0019] The electrode may be provided on the lower surface of the electrode connection part.

[0020] Some of the electrodes may be connected in parallel to the ends of the conductor tracks having the same current direction among the plurality of conductor tracks, and some of the electrodes may be directly connected to a single conductor track.

[0021] A fluid heating heater according to another embodiment of the present invention may include: a substrate; an insulating layer formed on the substrate; a first heating element formed on the insulating layer and composed of a plurality of first conductor tracks; a second heating element formed on the insulating layer and composed of a plurality of second conductor tracks and disposed adjacent to the first heating element; and a first electrode and a second electrode connected in parallel to the ends of the first conductor tracks and the second conductor tracks having the same current direction.

[0022] It may include a third electrode connected in parallel to the ends of the first conductor track and the second conductor track having the same current direction among the first conductor track and the second conductor track.

[0023] The first heating element and the second heating element may be arranged symmetrically with respect to each other on the substrate.

[0024] The first heating element and the second heating element may be arranged such that the first conductor track and the second conductor track sides on which the first electrode and the second electrode are disposed are adjacent to each other.

[0025] It may further include an electrode connection portion electrically connected to the first electrode and the second electrode.

[0026] The first conductor track is composed of a first-1 conductor track and a first-2 conductor track, and the second conductor track is composed of a second-1 conductor track and a second-2 conductor track, wherein the first-1 conductor track and the second-1 conductor track have the same current direction, and the first-2 conductor track and the second-2 conductor track may have a current direction opposite to the current direction of the first-1 conductor track and the second-1 conductor track.

[0027] The third electrode can be connected in parallel to the ends of the first-2 conductor track and the second-2 conductor track.

[0028] The third electrode may be connected to only a portion of the ends of the first-2 conductor track and the second-2 conductor track having the same current direction.

[0029] The above-mentioned first-1 conductor track may be formed with an end bent to wrap around the end of the above-mentioned first-2 conductor track, and the above-mentioned second-1 conductor track may be formed with an end bent to wrap around the end of the above-mentioned second-2 conductor track.

[0030] The third electrode may be connected to contact the end of the first-1 conductor track, the end of the second-1 conductor track, the bent end of the first-2 conductor track, and the bent end of the second-2 conductor track.

[0031] A spaced slot may be formed along the length direction between the first-2 conductor track and the second-2 conductor track.

[0032] The above-mentioned spacing slot may be formed tapered at the end side so that the end side of the first-2 conductor track and the second-2 conductor track is formed relatively thick.

[0033] A fluid heating heater according to one embodiment of the present invention comprises: a substrate; an insulating layer formed on the substrate; a heating element formed on the insulating layer and composed of at least one conductor track; and a pair of electrodes each provided at both ends of the conductor track, wherein one of the electrodes may be disposed in the direction of travel of the conductor track where the other electrode is located.

[0034] A pair of the above electrodes can be spaced apart from each other.

[0035] At least one of the above electrodes may be disposed on the conductor track disposed on the inner side of the conductor track disposed at the outermost edge.

[0036] One of the above electrodes may be placed in a section that is bent inward from the conductor track placed at the outermost edge.

[0037] The heating element may be spaced apart and positioned inside the insulating layer.

[0038] The above electrode can be formed through a thermal spray process.

[0039] The heating element is formed in a shape that starts from the outside and rolls inward, and a deflection section may be formed on the inside where the direction of the current is switched to the opposite direction.

[0040] A fluid heating heater according to another embodiment of the present invention comprises: a substrate; an insulating layer formed on the substrate; a first heating element formed on the insulating layer and composed of at least one first conductor track; a second heating element formed on the insulating layer and composed of at least one second conductor track and disposed adjacent to the first heating element; a pair of first electrodes each provided at both ends of the first conductor track; and a pair of second electrodes each provided at both ends of the second conductor track, wherein one of the first electrodes may be disposed in the direction of travel of the first conductor track where the other first electrode is located, and one of the second electrodes may be disposed in the direction of travel of the second conductor track where the other second electrode is located.

[0041] The first conductor track is composed of a first-1 conductor track disposed at the outermost edge and a first-2 conductor track disposed at the inner side of the outermost edge, and the second conductor track is composed of a second-1 conductor track disposed at the outermost edge and a second-2 conductor track disposed at the inner side of the outermost edge, wherein the first-1 conductor track and the second-1 conductor track have the same current direction, and the first-2 conductor track and the second-2 conductor track may have a current direction opposite to the current direction of the first-1 conductor track and the second-1 conductor track.

[0042] The first electrode may include a first electrode provided at the end of the first-1 conductor track; and a second electrode provided at the end of the first-2 conductor track.

[0043] The second electrode may include a second-1 electrode provided at the end of the second-1 conductor track; and a second-2 electrode provided at the end of the second-2 conductor track.

[0044] The first-1 electrode and the second-1 electrode have the same polarity, and the first-2 electrode and the second-2 electrode may have the same polarity.

[0045] The first electrode and the second electrode are integrally formed so as to connect the end of the first conductor track and the end of the second conductor track.

[0046] A third electrode may be provided to connect the ends of the first-1 conductor track and the second-1 conductor track.

[0047] The first-1 electrode and the first-2 electrode may be spaced apart from each other, and the second-1 electrode and the second-2 electrode may be spaced apart from each other.

[0048] The above-mentioned first-1 conductor track and the above-mentioned second conductor track may be spaced inward from the outer line of the insulating layer.

[0049] The ends of the first-1 conductor track and the second conductor track may be spaced inward from the outer line of the insulating layer.

[0050] The above-mentioned first-1 conductor track may be formed with an end bent to wrap around the end of the above-mentioned first-2 conductor track, and the above-mentioned second-1 conductor track may be formed with an end bent to wrap around the end of the above-mentioned second-2 conductor track.

[0051] A third electrode may be provided to connect the ends of the first-2 conductor track and the second-2 conductor track.

[0052] According to one embodiment of the present invention, by electrically connecting electrodes in parallel to the ends of the conductor tracks constituting the heating element, the width of the conductor tracks can be narrowed, thereby alleviating current concentration at the bending parts (corner parts, deflection parts) of the conductor tracks and preventing local temperature rise.

[0053] In addition, according to one embodiment of the present invention, by forming the electrode by a copper thermal spraying process, it is formed to come into contact not only with the surface of the heating element but also with the corresponding side between the heating elements, thereby improving adhesion through an additional contact surface in the vertical direction.

[0054] In addition, according to one embodiment of the present invention, since a pair of electrodes are spaced apart and arranged along the direction of travel of a conductor track constituting a heating element, the distance between the electrodes can be sufficiently widened, making it easy to secure an insulation distance between the electrodes.

[0055] In addition, according to one embodiment of the present invention, since an electrode is placed on a conductor track positioned on the inner side of the outermost edge, the distance from the substrate is greater than that of the electrode on the conductor track positioned on the outermost edge, making it easy to secure an insulation distance.

[0056] FIG. 1 is a drawing illustrating a heating element of a fluid heating heater according to one embodiment of the present invention.

[0057] FIG. 2 is a drawing showing a portion in which electrodes of a fluid heating heater are arranged according to one embodiment of the present invention.

[0058] FIG. 3 is a cross-sectional view illustrating a fluid heating heater according to one embodiment of the present invention.

[0059] FIG. 4 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0060] FIG. 5 is a drawing showing a portion in which electrodes of a fluid heating heater are arranged according to another embodiment of the present invention.

[0061] FIG. 6 is a drawing showing a portion in which electrodes of a fluid heating heater are arranged according to another embodiment of the present invention.

[0062] FIG. 7 is a drawing showing a portion in which electrodes of a fluid heating heater are arranged according to another embodiment of the present invention.

[0063] FIG. 8 is a diagram illustrating an example in which an electrode connection part is connected to a fluid heating heater according to one embodiment of the present invention.

[0064] FIG. 9 is a cross-sectional view illustrating a fluid heating heater according to the embodiment shown in FIG. 8.

[0065] FIG. 10 is a drawing illustrating another example in which an electrode connection part is connected to a fluid heating heater according to one embodiment of the present invention.

[0066] FIG. 11 is a cross-sectional view illustrating a fluid heating heater according to the embodiment shown in FIG. 10.

[0067] FIG. 12 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0068] FIG. 13 is a drawing showing a portion in which electrodes of a fluid heating heater are arranged according to another embodiment of the present invention.

[0069] Figure 14 is a diagram comparing the current inlet surface of the electrode shown in Figure 6 and the electrode shown in Figure 13.

[0070] FIG. 15 is a drawing illustrating an example in which an electrode connection is connected to a fluid heating heater according to the embodiment shown in FIG. 13.

[0071] FIG. 16 is a cross-sectional view illustrating a fluid heating heater according to another embodiment of the present invention.

[0072] FIG. 17 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0073] FIG. 18 is a drawing illustrating another example of electrode arrangement in the embodiment shown in FIG. 17.

[0074] FIG. 19 is a drawing illustrating another example of electrode placement in the embodiment shown in FIG. 17.

[0075] FIG. 20 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0076] FIG. 21 is a drawing showing the portion where the electrode is placed in the embodiment shown in FIG. 20.

[0077] FIG. 22 is a drawing illustrating another example of electrode placement in the embodiment shown in FIG. 20.

[0078] FIG. 23 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0079] FIG. 24 is a drawing showing the portion where the electrode is placed in the embodiment shown in FIG. 23.

[0080] FIG. 25 is a drawing illustrating another example of electrode placement in the embodiment shown in FIG. 23.

[0081] FIG. 26 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0082] FIG. 27 is a drawing showing the portion where the electrode is placed in the embodiment shown in FIG. 26.

[0083] FIG. 28 is a drawing illustrating another example of electrode placement in the embodiment shown in FIG. 26.

[0084] FIG. 29 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention.

[0085] FIG. 30 is a drawing showing the portion where the electrode is placed in the embodiment illustrated in FIG. 29.

[0086] FIG. 31 is a drawing illustrating another example of electrode placement in the embodiment shown in FIG. 29.

[0087] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. In describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the present invention.

[0088] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0089] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0090] Furthermore, throughout the specification, when the term "connected" is used, it does not mean only that two or more components are directly connected, but may also mean that two or more components are indirectly connected through other components, that they are connected not only physically but also electrically, or that they are a single unit although referred to by different names depending on their location or function.

[0091] Hereinafter, an embodiment of a fluid heating heater according to the present invention will be described in detail with reference to the accompanying drawings. In describing with reference to the accompanying drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0092] FIG. 1 is a drawing showing a heating element of a fluid heating heater according to one embodiment of the present invention, FIG. 2 is a drawing showing a portion where electrodes of a fluid heating heater according to one embodiment of the present invention are arranged, and FIG. 3 is a cross-sectional view showing a fluid heating heater according to one embodiment of the present invention.

[0093] As illustrated herein, a fluid heating heater according to one embodiment of the present invention may include a substrate (10), an insulating layer (20) formed on the substrate (10), a heating element (30) formed on the insulating layer (20) and composed of a plurality of conductor tracks (100), and an electrode (200) connected in parallel to the end of a conductor track (100) having the same current direction among the plurality of conductor tracks (100).

[0094] Fluid heating heaters can be, for example, thick-film heaters, and thick-film heaters are used as plate-shaped heating elements that maximize thermal efficiency and have thin and light characteristics by manufacturing high-performance heating elements on various substrates (iron plates, glass, ceramics, etc.) using printing techniques.

[0095] A fluid heating heater comprises a substrate (10) that can be simultaneously configured as a heat exchanger to transfer heat output released to a fluid to be heated. For example, the substrate (10) may preferably be manufactured from a metal material having a high heat transfer coefficient, particularly, for instance, aluminum or an aluminum alloy, in a highly cost-effective manner regarding manufacturing technology.

[0096] In the case of a specific exemplary embodiment formed from an electrically conductive material, an insulating layer (20) having high thermal conductivity is formed on the substrate (10). For example, the insulating layer (20) may be formed using, for example, aluminum oxide. The insulating layer (20) may be formed on the substrate (10) using, for example, a thermal spraying process. In particular, when the substrate (10) is formed from, for example, aluminum, it is possible to form the insulating layer (20) by intentionally oxidizing the surface of the substrate (10). A bonding layer (not shown) may be formed between the substrate (10) and the insulating layer (20). The bonding layer serves to improve the adhesion between the substrate (10) and the insulating layer (20) and to relieve stress caused by differences in thermal expansion.

[0097] The heating element (30) is formed on the insulating layer (20) and has a shape that rolls inward from the outside, for example, bending can be performed at the corners to form an overall rectangular shape. Additionally, the heating element (30) may have a right-angle spiral shape. Multiple heating elements (30) may have a shape that extends in parallel and rolls inward from the outside.

[0098] In this way, when the heating element (30) is rolled inward, a deflection section (150) can be formed on the central side where the direction of the current is switched to the opposite direction. That is, as the heating element (30) is rolled inward, the direction of the current is switched by 90 degrees at the part where it is bent at a right angle, but at the deflection section (150), the direction of the current is switched to the opposite direction, that is, 180 degrees.

[0099] The heating element (30) may be composed of at least one conductor track (100), wherein one conductor track (100) refers to a track that is rolled inward from one end. Also, a track that turns outward from the end of the rolled-in conductor track (100) can be considered as one conductor track (100). The conductor tracks (100) shown in FIG. 2 are composed of a total of four, but there are actually two heating elements (30). That is, among the conductor tracks (100), the conductor tracks (100) placed on the left and right sides form one heating element (30), and the two conductor tracks (100) placed in the middle form one heating element (30).

[0100] A conductor track (100) may include a pair of first conductor tracks (110) through which current flows in a first direction, and a pair of second conductor tracks (120) through which current flows in a second direction. Here, the first conductor tracks (110) and the second conductor tracks (120) may be connected as a pair, and the ends of the first conductor tracks (110) and the second conductor tracks (120) may each have current flowing in the first direction and the second direction, respectively. In one embodiment, the first direction of the current flowing in the first conductor tracks (110) and the second direction of the current flowing in the second conductor tracks (120) may be opposite directions.

[0101] In this embodiment, an electrode (200) may be connected in parallel to the end of a conductor track (100) having the same current direction among a plurality of conductor tracks (100), and the electrode (200) applies power of the same polarity (same current direction). The electrode (200) may be placed in parallel to the end of a conductor track (100) through which current flows in a first direction or a second direction to connect the conductor tracks (100). In this way, in this embodiment, the conductor tracks (100) may be divided into insulating zones, either wholly or partially, and electrically connected in parallel. The conductor tracks (100) arranged in parallel may be connected through at least one electrode (200).

[0102] As explained above, if the ends of the conductor track (100) are electrically connected in parallel, the width of the conductor track (100) can be narrowed, thereby alleviating current concentration at the bending parts (corner parts, deflection parts) of the conductor track (100) and preventing local temperature rise.

[0103] To explain more specifically, when there is a bending section of the conductor track (100), the current is concentrated in the inner part of the bend, which is the shortest path (the part with the least resistance). At this time, if the conductor track (100) with a wide width is divided to narrow the width of the conductor track (100), the concentration of current at the corner and deflection sections can be alleviated and local temperature rise can be prevented. However, if the conductor track (100) is divided in parallel or the divided conductor tracks (100) are connected in parallel, the number of conductor tracks (100) to which power must be applied increases, and the number of electrodes (200) to which power is applied increases; therefore, in this embodiment, the number of electrodes (200) is minimized by connecting the electrodes (200) in parallel to the ends of the conductor tracks (100).

[0104] Referring to FIG. 3, the fluid heating heater has a structure in which a substrate (10), an insulating layer (20), a heating element (30), and an electrode (200) are stacked in sequence. Here, the electrode (200) may be connected in parallel to contact only the upper surface of the heating element (30), but in this embodiment, the electrode (200) is formed to contact the surface of the heating element (30) and also contact the side corresponding to the space between the heating elements (30), thereby improving adhesion through an additional contact surface in the vertical direction.

[0105] In one embodiment, the electrode (200) may be formed by a thermal spray process. Thermal spraying is a process of forming a coating layer by melting a coating material, such as metal or ceramic, with heat (combustion or electricity) and spraying it at high speed. In one embodiment, the electrode (200) may be formed by a thermal spray process using copper.

[0106] FIG. 4 is a drawing showing a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 5 is a drawing showing a portion where electrodes of a fluid heating heater are arranged according to another embodiment of the present invention, FIG. 6 is a drawing showing a portion where electrodes of a fluid heating heater are arranged according to yet another embodiment of the present invention, and FIG. 7 is a drawing showing a portion where electrodes of a fluid heating heater are arranged according to yet another embodiment of the present invention.

[0107] Referring to FIGS. 4 and 5, a fluid heating heater according to another embodiment of the present invention may include a substrate (10, see FIG. 3), an insulating layer (20) formed on the substrate (10), a first heating element (500) formed on the insulating layer (20) and composed of a plurality of first conductor tracks (510), a second heating element (600) formed on the insulating layer (20) and composed of a plurality of second conductor tracks (520) and disposed adjacent to the first heating element (500), and a first electrode (700) and a second electrode (710) connected in parallel to the ends of the first conductor tracks (510) and the second conductor tracks (520) having the same current direction.

[0108] In this embodiment, two heating elements (500, 600) are formed on a single substrate (10), and the first heating element (500) and the second heating element (600) may be arranged adjacently on the substrate (10). At this time, the first heating element (500) and the second heating element (600) may be arranged such that the sides of the first conductor track (510) and the second conductor track (520), where the first electrode (700) and the second electrode (710) are arranged, are adjacent to each other.

[0109] In one embodiment, the first heating element (500) and the second heating element (600) may be arranged symmetrically with respect to each other on a substrate (10, see FIG. 3).

[0110] The first conductor track (510) is composed of a first-1 conductor track (510a) and a first-2 conductor track (510b), and the second conductor track (520) is composed of a second-1 conductor track (520a) and a second-2 conductor track (520b). The first-1 conductor track (510a) and the second-1 conductor track (520a) have the same current direction, and the first-2 conductor track (510b) and the second-2 conductor track (520b) may have a current direction opposite to the current direction of the first-1 conductor track (510a) and the second-1 conductor track (520a). This can be done by referring to the arrow direction shown in FIG. 5.

[0111] Referring to FIG. 6, a third electrode (720) may be included that is connected in parallel to the ends of the first conductor track (510) and the second conductor track (520) having the same current direction among the first conductor track (510) and the second conductor track (520). That is, the third electrode (720) is not connected to the first conductor track (510) or the second conductor track (520) respectively, but may be connected in parallel across the first conductor track (510) and the second conductor track (520).

[0112] At this time, the third electrode (720) can be connected in parallel to the ends of the first-2 conductor track (510b) and the second-2 conductor track (520b).

[0113] Referring to FIG. 7, the third electrode (720) may not be connected to the entire end of the first-2 conductor track (510b) and the second-2 conductor track (520b) having the same current direction, but may be connected to only a part of the end of the first-2 conductor track (510b) and the second-2 conductor track (520b). In this case, the first electrode (700) may be connected to the end of the first-2 conductor track (510b) where the third electrode (720) is not connected among the ends of the first-2 conductor track (510b) and the second-2 conductor track (520b).

[0114] FIG. 8 is a drawing illustrating an example in which an electrode connection part is connected to a fluid heating heater according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view illustrating a fluid heating heater according to the embodiment shown in FIG. 8.

[0115] Referring to FIGS. 8 and 9, an electrode connection part (300) for electrical connection may be attached to the surfaces of the first electrode (700), the second electrode (710), and the third electrode (720). The electrode connection part (300) may be provided as, for example, a bus bar or a wire. The electrode connection part (300) may be attached to the surface of each of the first electrode (700), the second electrode (710), and the third electrode (730). When the electrode connection part (300) is attached in this way, the electrode connection part (300), the first electrode (700), the second electrode (710), and the third electrode (720), the first heating element (500), and the second heating element (600) may be electrically connected to each other.

[0116] In this embodiment, since the third electrode (720) is connected in parallel to the first-2 conductor track (510b) and the second-2 conductor track (520b), the electrode connection part (300) coupled to the third electrode (720) can be configured as one instead of two, thereby reducing the number of parts.

[0117] FIG. 10 is a drawing illustrating another example in which an electrode connection part is connected to a fluid heating heater according to one embodiment of the present invention, and FIG. 11 is a cross-sectional view illustrating a fluid heating heater according to the embodiment shown in FIG. 10.

[0118] Referring to FIGS. 10 and 11, an electrode connection part (300) for electrical connection may be coupled to the ends of the first conductor track (510) and the second conductor track (520). The electrode connection part (300) may be provided as, for example, a bus bar or a wire.

[0119] In this embodiment, an electrode (310) may be provided on the lower surface of the electrode connection part (300). That is, a part of the electrode connection part (300) is configured as an electrode (310) to be directly electrically connected to the first heating element (500) and the second heating element (600).

[0120] FIG. 12 is a drawing showing a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 13 is a drawing showing a portion where an electrode of a fluid heating heater according to another embodiment of the present invention is arranged, FIG. 14 is a drawing comparing the current inlet surface of the electrode shown in FIG. 6 and the electrode shown in FIG. 13, and FIG. 15 is a drawing showing an example in which an electrode connection part is connected to a fluid heating heater according to the embodiment shown in FIG. 13.

[0121] Referring to FIGS. 12 and 13, a fluid heating heater according to another embodiment of the present invention comprises a substrate (10), an insulating layer (20) formed on the substrate (10), a first heating element (500) formed on the insulating layer (20) and composed of a plurality of first conductor tracks (510), a second heating element (600) formed on the insulating layer (20) and composed of a plurality of second conductor tracks (520) and disposed adjacent to the first heating element (500), and a first electrode (700) and a second electrode (710) connected in parallel to the ends of the first conductor tracks (510) and the second conductor tracks (520) having the same current direction; It may include a third electrode (720) connected in parallel to the ends of the first conductor track (510) and the second conductor track (520) having the same current direction among the first conductor track (510) and the second conductor track (520) arranged adjacently.

[0122] The first conductor track (510) is composed of a first-1 conductor track (510a) and a first-2 conductor track (510b), and the second conductor track (520) is composed of a second-1 conductor track (520a) and a second-2 conductor track (520b), and the first-1 conductor track (510a) and the second-1 conductor track (520a) have the same current direction, and the first-2 conductor track (510b) and the second-2 conductor track (520b) may have a current direction opposite to the current direction of the first-1 conductor track (510a) and the second-1 conductor track (520a).

[0123] At this time, a spacing slot (530) may be formed between the first-2 conductor track (510b) and the second-2 conductor track (520b) that are placed closest to each other. The spacing slot (530) is formed along the length direction of the first heating element (500) and the second heating element (600) between the first-2 conductor track (510b) and the second-2 conductor track (520b), and is formed so that the first-2 conductor track (510b) and the second-2 conductor track (520b) are bent toward the third electrode (720), thereby reducing the size of the third electrode (720). At this time, the spacing slot (530) may be formed tapered at the end side by making the end side of the first-2 conductor track (510b) and the second-2 conductor track (520b) relatively thick.

[0124] One of a pair of first-2 conductor tracks (510b) may be formed by being bent to wrap around the end of the other first-2 conductor track (510b), and one of a pair of second-2 conductor tracks (520b) may be formed by being bent to wrap around the end of the other second-2 conductor track (520b). Accordingly, the third electrode (720) may be formed to contact the bent end of the first-2 conductor track (510b), the bent end of the second-2 conductor track (520b), the end of the first-2 conductor track (510b), and the end of the second-2 conductor track (520b).

[0125] For reference, reference numeral 550 is the first deflection part, and reference numeral 650 is the second deflection part.

[0126] Referring to FIG. 14, an electrode connection part (300) for electrical connection may be attached to the surfaces of the first electrode (700), the second electrode (710), and the third electrode (720). The electrode connection part (300) may be provided as, for example, a bus bar or a wire. The electrode connection part (300) may be attached to the surface of each of the first electrode (700), the second electrode (710), and the third electrode (730). When the electrode connection part (300) is attached in this way, the electrode connection part (300), the first electrode (700), the second electrode (710), and the third electrode (720), the first heating element (500), and the second heating element (600) may be electrically connected to each other.

[0127] Referring to FIG. 15, by forming the spacing slot (530) in this manner, the same current inlet surface (R) can be formed while reducing the size of the third electrode (720). That is, the third electrode (720) has the current inlet surface (R) formed in four parts as in (a) (the embodiment of FIG. 6), but referring to (b), which is the present embodiment, it can be seen that the current inlet surface (R) is formed in four parts identically. In addition, when the third electrode (720) is arranged in this manner, a sufficient insulation distance from the first electrode (700) and the second electrode (710) can be secured while reducing the size of the third electrode (720).

[0128] FIG. 16 is a cross-sectional view illustrating a fluid heating heater according to another embodiment of the present invention, FIG. 17 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 18 is a drawing illustrating another example of electrode arrangement in the embodiment illustrated in FIG. 17, and FIG. 19 is a drawing illustrating yet another example of electrode arrangement in the embodiment illustrated in FIG. 17.

[0129] As illustrated herein, a fluid heating heater according to another embodiment of the present invention comprises a substrate (10), an insulating layer (20) formed on the substrate (10), a heating element (30) formed on the insulating layer (20) and composed of at least one conductor track (1100), and a pair of electrodes (1200) each provided at both ends of the conductor track (1100), wherein one of the electrodes (1200) may be positioned in the direction of travel of the conductor track (1100) where the other electrode (1200) is located.

[0130] Fluid heating heaters can be, for example, thick-film heaters, and thick-film heaters are used as plate-shaped heating elements that maximize thermal efficiency and have thin and light characteristics by manufacturing high-performance heating elements on various substrates (iron plates, glass, ceramics, etc.) using printing techniques.

[0131] A fluid heating heater comprises a substrate (10) that can be simultaneously configured as a heat exchanger to transfer heat output released to a fluid to be heated. For example, the substrate (10) may preferably be manufactured from a metal material having a high heat transfer coefficient, particularly, for instance, aluminum or an aluminum alloy, in a highly cost-effective manner regarding manufacturing technology.

[0132] In the case of a specific exemplary embodiment formed from an electrically conductive material, an insulating layer (20) having high thermal conductivity is formed on the substrate (10). For example, the insulating layer (20) may be formed using, for example, aluminum oxide. The insulating layer (20) may be formed on the substrate (10) using, for example, a thermal spray process. In particular, when the substrate (10) is formed from, for example, aluminum, it is possible to form the insulating layer (20) by intentionally oxidizing the surface of the substrate (10). A bonding layer (not shown) may be formed between the substrate (10) and the insulating layer (20). The bonding layer serves to improve the adhesion between the substrate (10) and the insulating layer (20) and to relieve stress caused by differences in thermal expansion.

[0133] The heating element (30) is formed on the insulating layer (20) and has a shape that rolls inward from the outside, for example, bending can be performed at the corners to form an overall rectangular shape. Additionally, the heating element (30) may have a right-angle spiral shape. Multiple heating elements (30) may have a shape that extends in parallel and rolls inward from the outside.

[0134] In one embodiment, one heating element (30) may extend parallel to each other, roll inward, and then come outward. In the drawing, the two heating elements (30) positioned at the top may be configured such that one rolls inward from the outside and then comes outward again.

[0135] In this way, when the heating element (30) is rolled inward, a deflection section (1150) can be formed on the central side where the direction of the current is switched to the opposite direction. That is, as the heating element (30) is rolled inward, the direction of the current is switched by 90 degrees at the part where it is bent at a right angle, but at the deflection section (1150), the direction of the current is switched to the opposite direction, that is, 180 degrees.

[0136] An additional insulating layer (40) may be formed on the heating element (30). The additional insulating layer (40) may be formed, for example, using aluminum oxide. An electrode (1200) is provided on the heating element (30), and the electrode (1200) may be provided together on the heating element (30) separately from the additional insulating layer (40). In this embodiment, the additional insulating layer (40) may be formed over the entire insulating layer (20) and the heating element (30), and may be formed over the upper surface of the heating element (30) excluding the portion where the electrode (1200) is formed. In this way, the additional insulating layer (40) must be formed on the heating element (30) excluding the electrode (1200) so that an insulating distance between the electrode (1200) and the substrate (10) can be secured. An electrode connection part (1300) for electrical connection may be attached to the surface of the electrode (1200). The electrode connection part (1300) may be provided with, for example, a bus bar or a wire.

[0137] The heating element (30) may be composed of at least one conductor track (1100), wherein one conductor track (1100) refers to a track that is rolled inward from one end. Also, a track that turns outward from the end of the rolled-in conductor track (1100) can be considered as one conductor track (1100). There are a total of two conductor tracks (1100), but there is actually only one heating element (30). Also, the heating element (30) may be spaced apart from the inner side of the insulating layer (20). That is, the heating element (30) has a largely rectangular shape, and the insulating layer (20) may be formed to the extent of the portion protruding outward from each side of the rectangle.

[0138] Here, electrodes (1200) are respectively provided at the ends of the conductor track (1100) positioned at the outermost edge and the conductor track (1100) positioned at the inner outermost edge to apply power. That is, a pair of electrodes (1200) may be respectively positioned at the ends of conductor tracks (1100) through which current flows in opposite directions. In one embodiment, the electrodes (1200) may be formed by a thermal spray process. Thermal spraying is a process of forming a coating layer by melting a coating material, such as metal or ceramic, with heat (combustion or electricity) and spraying it at high speed. In one embodiment, the electrodes (1200) may be formed by a thermal spray process using copper.

[0139] In this embodiment, at least one electrode (1200) may be positioned on the direction of travel of the conductor track (1100) where the counterpart electrode (1200) is located. When the electrodes (1200) are arranged in this way, it is easy to secure an insulating distance by spacing the electrodes (1200) apart from each other as shown in FIG. 2. That is, since a pair of electrodes (1200) are positioned on the same direction of travel of the conductor track (1100), an insulating distance can be secured by keeping a distance between them.

[0140] Additionally, as shown in FIGS. 17 and 18, at least one of the electrodes (1200) may be placed on a conductor track (1100) placed on the outermost inner side. Here, the outermost inner side refers to a conductor track (1100) placed immediately inside the conductor track (1100) placed on the outermost side. For example, if the conductor track (1100) is arranged in 5 stages from the center toward the outermost side, the outermost inner side refers to a conductor track (1100) placed on the 4th stage, which is immediately inside the 5th stage, which is the outermost side. Placing the electrode (1200) in this manner is intended to secure a sufficient insulation distance between the substrate (10) and the electrode (1200) by securing the distance between the electrode (1200) and the substrate (10) by placing the electrode (1200) on the inner side rather than the outermost side.

[0141] In particular, referring to FIG. 19, one of the electrodes (1200) may be placed in a section that is bent inward from the outermost conductor track (1100). At this time, the electrode (1200) provided on the outermost conductor track (1100) is placed closer to the substrate (10), but the insulation distance between the electrodes (1200) can be secured.

[0142] FIG. 20 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 21 is a drawing illustrating a portion in which an electrode is arranged in the embodiment illustrated in FIG. 20, and FIG. 22 is a drawing illustrating another example of electrode arrangement in the embodiment illustrated in FIG. 20.

[0143] Referring to FIGS. 20 and 21, a fluid heating heater according to another embodiment of the present invention comprises a substrate (10), an insulating layer (20) formed on the substrate (10), a first heating element (1500) formed on the insulating layer (20) and composed of at least one first conductor track (1510), a second heating element (1600) formed on the insulating layer (20) and composed of at least one second conductor track (1610) and disposed adjacent to the first heating element (1500), a pair of first electrodes (1700) each provided at both ends of the first conductor track (1510), and a pair of second electrodes (1710) each provided at both ends of the second conductor track (1610), wherein one of the first electrodes (1700) is disposed in the direction of travel of the first conductor track (1510) where the other first electrode (1700) is located, and One of the second electrodes (1710) may be positioned in the direction of travel of the second conductor track (1610) where the other second electrode (1710) is located.

[0144] In this embodiment, two heating elements (30) are formed on a single substrate (10), and a first heating element (1500) and a second heating element (1600) may be arranged adjacently on the substrate (10). At this time, the first heating element (1500) and the second heating element (1600) may be arranged such that the first conductor track (1510) and the second conductor track (1610), on which the first electrode (1700) and the second electrode (1710) are arranged, are adjacent to each other.

[0145] In one embodiment, the first heating element (1500) and the second heating element (1600) may be arranged symmetrically with respect to each other on the substrate (10).

[0146] The first conductor track (1510) may be composed of a first-1 conductor track (1510a) and a first-2 conductor track (1510b), and the second conductor track (1610) may be composed of a second-1 conductor track (1610a) and a second-2 conductor track (1610b). Here, the first-1 conductor track (1510a) and the first-2 conductor track (1510b) have opposite current directions, and the second-1 conductor track (1610a) and the second-2 conductor track (1610b) have opposite current directions. Additionally, the first-1 conductor track (1510a) and the second-1 conductor track (1610a) have the same current direction, and the first-2 conductor track (1510b) and the second-2 conductor track (1610b) have the same current direction.

[0147] The first-1 conductor track (1510a) and the first-2 conductor track (1510b) are substantially composed of a single first heating element (1500), the first-1 conductor track (1510a) is positioned to surround the outermost edge, and the first-2 conductor track (1510b) may be positioned immediately inside the outermost edge. The second-1 conductor track (1610a) and the second-2 conductor track (1610b) are substantially composed of a single second heating element (1600), the second-1 conductor track (1610a) is positioned to surround the outermost edge, and the second-2 conductor track (1610b) may be positioned immediately inside the outermost edge.

[0148] The first electrode (1700) may include a first-1 electrode (1700a) provided at the end of the first conductor track (1510) positioned at the outermost edge, and a first-2 electrode (1700b) provided at the end of the first conductor track (1510) positioned at the inner outermost edge. Here, the first-1 electrode (1700a) may be provided at the end of the first-1 conductor track (1510a), and the first-2 electrode (1700b) may be provided at the end of the first-2 conductor track (1510b).

[0149] Additionally, the second electrode (1710) may include a second-1 electrode (1710a) provided at the end of the second conductor track (1610) positioned at the outermost edge, and a second-2 electrode (1710b) provided at the end of the second conductor track (1610) positioned at the inner outermost edge. Here, the second-1 electrode (1710a) may be provided at the end of the second-1 conductor track (1610a), and the second-2 electrode (1710b) may be provided at the end of the second-2 conductor track (1610b).

[0150] The first-1 electrode (1700a) and the second-1 electrode (1710a) have the same polarity because they are placed on a conductor track with the same current direction, and the first-2 electrode (1700b) and the seventh-2 electrode (1710b) have the same polarity because they are placed on a conductor track with the same current direction.

[0151] For reference, reference numeral 1550 is the first deflection part, and reference numeral 1650 is the second deflection part.

[0152] Referring to FIG. 21, the first electrode (1700a) and the second electrode (1700b) may be spaced apart from each other, and the second electrode (1710a) and the second electrode (1710b) may be spaced apart from each other. In this way, when the first electrode (1700) and the second electrode (1710) are spaced apart, an insulating distance between the electrodes (1700, 1710) can be secured.

[0153] Here, since the first-1 electrode (1700a) and the second-1 electrode (1710a) have the same polarity, securing an insulation distance is unnecessary, so they can be placed close together. In order for the first-1 electrode (1700a) and the second-1 electrode (1710a) to be placed close to each other, the end of the first-1 conductor track (1510a) can be formed by being bent inward, and the end of the second-1 conductor track (1610a) can be formed by being bent inward. That is, the end of the first conductor track (1510) placed at the outermost edge can be formed by being bent inward, and the end of the second conductor track (1610) placed at the outermost edge can be formed by being bent inward.

[0154] In this way, the end of the first conductor track (1510) and the second conductor track (1610) arranged at the outermost edge are formed by being bent inward, and the first-1 electrode (1700a) and the second-1 electrode (1710a) are provided at the end, thereby sufficiently securing an insulation distance between the substrate (10) and the electrodes (1700, 1710).

[0155] Referring to FIG. 22, the third electrode (1720) can connect the end of the first conductor track (1510) placed at the outermost edge and the end of the second conductor track (1610). Since the first-1 conductor track (1510a) and the second-1 conductor track (1610a) placed at the outermost edge have the same current direction, the electrodes provided at the ends have the same polarity. Therefore, the ends of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) can be connected through a single third electrode (1720) without configuring electrodes separately.

[0156] FIG. 23 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 24 is a drawing illustrating a portion in which an electrode is arranged in the embodiment illustrated in FIG. 23, and FIG. 25 is a drawing illustrating another example of electrode arrangement in the embodiment illustrated in FIG. 23.

[0157] Referring to FIGS. 23 and 24, the present embodiment includes two heating elements (30) formed on a single substrate (10) as in the embodiment shown in FIGS. 20 to 22, and a first heating element (1500) and a second heating element (1600) may be arranged adjacently on the substrate (10). At this time, the first heating element (1500) and the second heating element (1600) may be arranged such that the sides of the first conductor track (1510) and the second conductor track (1610), where the first electrode (1700) and the second electrode (1710) are arranged, are adjacent to each other.

[0158] In this embodiment, the ends of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) placed at the outermost edge are not formed by bending. However, by arranging the first-2 electrode (1700b) and the second-2 electrode (1710b) so as to be spaced apart from each other, an insulation distance between the first-2 electrode (1700b) and the second-2 electrode (1710b) can be secured.

[0159] Referring to FIG. 25, the third electrode (1720) can connect the end of the first conductor track (1510) placed at the outermost edge and the end of the second conductor track (1610). Since the first-1 conductor track (1510a) and the second-1 conductor track (1610a) placed at the outermost edge have the same current direction, the electrodes provided at the ends have the same polarity. Therefore, the electrodes provided at the ends of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) can be connected through a single third electrode (1720) without being configured separately.

[0160] FIG. 26 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 27 is a drawing illustrating a portion in which an electrode is arranged in the embodiment shown in FIG. 26, and FIG. 28 is a drawing illustrating another example of electrode arrangement in the embodiment shown in FIG. 26.

[0161] Referring to FIGS. 26 and 27, the present embodiment includes forming two heating elements (30) on a single substrate (10) as in the embodiment shown in FIGS. 20 to 25, and a first heating element (1500) and a second heating element (1600) may be arranged adjacently on the substrate (10). At this time, the first heating element (1500) and the second heating element (1600) may be arranged such that the sides of the first conductor track (1510) and the second conductor track (1610), where the first electrode (1700) and the second electrode (1710) are arranged, are adjacent to each other.

[0162] In this embodiment, the first-1 conductor track (1510a) and the second-1 conductor track (1610a) positioned at the outermost edge may be positioned so as to be spaced inward from the outer line of the insulating layer (20) to secure an insulating distance from the substrate (10). In this way, if the outer lines of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) are spaced apart from the substrate (10), an insulating distance between the first-1 electrode (1700a) and the second-1 electrode (1710a) and the substrate (10) can be secured. For example, the first-1 conductor track (1510a) and the second-1 conductor track (1610a) may be positioned so as to be spaced inward from the outer line of the insulating layer (20) by a thickness equal to one of the first-1 conductor track (1510a) and the second-1 conductor track (1610a).

[0163] Additionally, the first-1 electrode (1700a) and the first-2 electrode (1700b) can be spaced apart from each other, for example, along the direction of travel of the first-1 conductor track (1510a), thereby securing an insulating distance between the first-1 electrode (1700a) and the first-2 electrode (1700b). The second-1 electrode (1710a) and the second-2 electrode (1710b) can be spaced apart from each other, for example, along the direction of travel of the second-2 conductor track (1610a), thereby securing an insulating distance between the second-1 electrode (1710a) and the second-2 electrode (1710b).

[0164] Referring to FIG. 28, the first-2 conductor track (1510b) and the second-2 conductor track (1610b) positioned on the outermost inner side have the same current direction, so the electrodes provided at the ends have the same polarity. Therefore, the electrodes provided at the ends of the first-2 conductor track (1510b) and the second-2 conductor track (1610b) can be connected through a single third electrode (1720) without being configured separately.

[0165] FIG. 29 is a drawing illustrating a heating element of a fluid heating heater according to another embodiment of the present invention, FIG. 30 is a drawing illustrating a portion in which an electrode is arranged in the embodiment illustrated in FIG. 29, and FIG. 31 is a drawing illustrating another example of electrode arrangement in the embodiment illustrated in FIG. 29.

[0166] Referring to FIGS. 29 and FIGS. 30, the present embodiment includes two heating elements (30) formed on a single substrate (10) as in the embodiment shown in FIGS. 20 to 28, and a first heating element (1500) and a second heating element (1600) may be arranged adjacently on the substrate (10). At this time, the first heating element (1500) and the second heating element (1600) may be arranged such that the sides of the first conductor track (1510) and the second conductor track (1610), where the first electrode (1700) and the second electrode (1710) are arranged, are adjacent to each other.

[0167] In this embodiment, the first-1 conductor track (1510a) and the second-1 conductor track (1610a) positioned at the outermost edge may be spaced inward at their ends to secure an insulating distance from the substrate (10). Here, the spaced arrangement of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) is not such that the entire line of the conductor track is spaced inward as in the embodiment shown in FIG. 26, but rather that the ends of the first-1 conductor track (1510a) and the second-1 conductor track (1610a) are spaced inward.

[0168] In this embodiment, the first-1 conductor track (1510a) is formed with an end bent to wrap around the end of the first-2 conductor track (1510b), and the second-1 conductor track (1610a) is formed with an end bent to wrap around the end of the second-2 conductor track (1610b). When arranged in this way, it is difficult to secure an insulating distance between the electrodes (1700, 1710), but an insulating distance between the substrate (10) and the electrodes (1700, 1710) can be secured.

[0169] Referring to FIG. 31, the first-2 conductor track (1510b) and the second-2 conductor track (1610b) positioned on the outermost inner side have the same current direction, so the electrodes provided at the ends also have the same polarity. Therefore, the electrodes provided at the ends of the first-2 conductor track (1510b) and the second-2 conductor track (1610b) can be connected through a single third electrode (1720) without being configured separately.

[0170] Although the present invention has been described above with reference to specific embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as set forth in the following claims.

[0171] [Explanation of the symbol]

[0172] 10: Substrate 20: Insulating layer

[0173] 30: Heating element 100: Conductor track

[0174] 110: 1st conductor track 120: 2nd conductor track

[0175] 200: Electrode 500: First heating element

[0176] 510: 1st conductor track 510a: 1-1st conductor track

[0177] 510b: 1st-2nd conductor track 520: 2nd conductor track

[0178] 520a: 2-1 Conductor Track 520b: 2-2 Conductor Track

[0179] 530: Separation slot 600: Second heating element

[0180] 700: 1st electrode 720: 2nd electrode

[0181] 730: Third electrode

[0182] 1100: Conductor track 1150: Deflection section

[0183] 1200: Electrode 1300: Electrode connection part

[0184] 1500: 1st heating element 1510: 1st conductor track

[0185] 1510a: 1-1 conductor track 1510b: 1-2 conductor track

[0186] 1600: Second heating element 1610: Second conductor track

[0187] 1610a: 2-1 conductor track 1610b: 2-2 conductor track

[0188] 1700: First electrode 1700a: First-1 electrode

[0189] 1700b: 1st-2nd electrode 1710: 2nd electrode

[0190] 1710a: Electrode 2-1 1710b: Electrode 2-2

[0191] 1720: Third electrode

Claims

1. Substrate; An insulating layer formed on the above substrate; A heating element formed on the insulating layer and composed of a plurality of conductor tracks; and A fluid heating heater comprising an electrode connected in parallel to the end of a conductor track having the same current direction among a plurality of conductor tracks.

2. In Paragraph 1, A fluid heating heater in which the heating element is formed in a shape that starts from the outside and rolls inward, and a deflection portion is formed on the inside in which the direction of the current is switched to the opposite direction.

3. In Paragraph 1, The above heating element is composed of a conductor track through which current flows, and the conductor track is, At least one first conductor track through which current flows in a first direction; and A fluid heating heater comprising at least one second conductor track through which current flows in a second direction.

4. In Paragraph 1, The above electrode is a fluid heating heater formed to contact the upper surface of the insulating layer formed between the heating elements.

5. In Paragraph 1, It further includes an electrode connection part electrically connected to the above electrode, and The above electrode connection part is connected to make surface contact with the surface of the electrode, and A fluid heating heater having the electrode provided on the lower surface of the electrode connection portion.

6. In Paragraph 1, A fluid heating heater in which some of the electrodes are connected in parallel to the ends of the conductor tracks having the same current direction among a plurality of conductor tracks, and other parts are directly connected to a single conductor track.

7. Substrate; An insulating layer formed on the above substrate; A first heating element formed on the insulating layer and composed of a plurality of first conductor tracks; A second heating element formed on the insulating layer and composed of a plurality of second conductor tracks, and disposed adjacent to the first heating element; and A fluid heating heater comprising a first electrode and a second electrode connected in parallel to the ends of the first conductor track and the second conductor track having the same current direction.

8. In Paragraph 7, A fluid heating heater comprising a third electrode connected in parallel to the ends of the first conductor track and the second conductor track having the same current direction among the first conductor track and the second conductor track.

9. In Paragraph 8, The above-mentioned first conductor track is composed of a first-1 conductor track and a first-2 conductor track, and The above second conductor track is composed of a second-1 conductor track and a second-2 conductor track, and The above 1-1 conductor track and the above 2-1 conductor track have the same current direction, The above-mentioned first-2 conductor track and the above-mentioned second-2 conductor track are fluid heating heaters having a current direction opposite to the current direction of the above-mentioned first-1 conductor track and the above-mentioned second-1 conductor track.

10. In Paragraph 9, The third electrode is a fluid heating heater connected in parallel to the ends of the first-2 conductor track and the second-2 conductor track.

11. In Paragraph 9, The above third electrode is a fluid heating heater connected only to some of the ends of the above first-2 conductor tracks and the above second-2 conductor tracks having the same current direction.

12. In Paragraph 9, The above-mentioned first-1 conductor track is formed with an end bent to wrap around the end of the above-mentioned first-2 conductor track, and the above-mentioned second-1 conductor track is formed with an end bent to wrap around the end of the above-mentioned second-2 conductor track, and The above third electrode is a fluid heating heater connected to contact the end of the first-1 conductor track, the end of the second-1 conductor track, the bent end of the first-2 conductor track, and the bent end of the second-2 conductor track.

13. In Paragraph 9, A spaced slot is formed along the longitudinal direction between the first-2 conductor track and the second-2 conductor track, and The above-mentioned spacing slot is a fluid heating heater formed tapering at the end side so that the end side of the first-2 conductor track and the second-2 conductor track is formed relatively thick.

14. Substrate; An insulating layer formed on the above substrate; A heating element formed on the insulating layer and composed of at least one conductor track; and It includes a pair of electrodes provided at each end of the above-mentioned conductor track, and One of the above electrodes is a fluid heating heater positioned in the direction of travel of the conductor track where the other electrode is located.

15. In Paragraph 14, A fluid heating heater in which a pair of the above electrodes are spaced apart from each other.

16. In Paragraph 14, At least one of the above electrodes is a fluid heating heater disposed on the conductor track disposed on the inner side of the conductor track disposed on the outermost side.

17. In Paragraph 14, One of the above electrodes is a fluid heating heater positioned in a section that is bent inward from the conductor track positioned at the outermost edge.

18. In Paragraph 14, The above heating element is a fluid heating heater spaced apart from the inner side of the insulation layer.

19. In Paragraph 14, A fluid heating heater in which the heating element is formed in a shape that starts from the outside and rolls inward, and a deflection portion is formed on the inside in which the direction of the current is switched to the opposite direction.

20. In Paragraph 14, A fluid heating heater having an additional insulating layer formed on the insulating layer and the heating element, wherein the additional insulating layer is formed on a portion excluding the portion where the electrode is formed.

Images