A multi-chamber flow heating element

Abstract

The present application discloses a multi-cavity flow heating element. The multi-cavity flow heating element includes: an outer frame; a plurality of heating plates, the substrate of each heating plate is welded to the outer frame to cooperate with the outer frame to form a receiving cavity, and the substrate of each heating plate serves as the side wall of the receiving cavity; a plurality of heat-conducting fin modules, which are respectively arranged on the second side of the substrate of the corresponding heating plate and are thermally connected to the substrate; a plurality of plate-shaped partitions, the first sides of the plurality of partitions are connected, and are arranged in the receiving cavity and divide the receiving cavity into a plurality of chambers, at least one heat-conducting fin module is arranged in each chamber, and the second sides of two adjacent partitions are adjacent to or abut against the substrate of the corresponding heating plate, and are respectively located on the side of the corresponding heat-conducting fin module. The present application can realize multi-cavity flow heating, which not only has a high heating rate and energy conversion efficiency, can quickly heat a large amount of flowing liquid to a high temperature, but also has a good spatial structure optimization effect.

Description

Technical Field

[0001] The present application relates to the technical field of flow heating, and in particular to a multi-cavity flow heating element. Background Art

[0002] A flow heater is a heating device for heating liquids such as water or aqueous solutions, and is generally used in vehicles such as automobiles or various engineering machinery. The flow heater is provided with a heating plate and heat-conducting fins (also known as "heat-conducting fins"). The heating plate generally adopts thick film heating technology, that is, it includes a substrate and a heating coil arranged on one side of the substrate, and the fins are arranged on the other side of the substrate. The heating coil is electrically heated, and the fins conduct heat to the liquid to achieve liquid heating.

[0003] When applied to scenes such as automobiles, flow heaters are developed with the consistent goal of compact design, low manufacturing cost and high efficiency, so that a large amount of flowing liquid can be heated to a required temperature in a short time. However, existing flow heaters usually have only one chamber, also known as "single-chamber flow heaters", and the heating plate is set on one side of the flow heater, with low heat conduction efficiency and limited heating rate, which is particularly difficult to meet the demand of quickly heating a large amount of flowing liquid to a higher temperature. Utility Model Content

[0004] In view of this, the present application provides a multi-cavity flow heating element, which can improve the problem of low heating rate of single-cavity flow heaters and the resulting difficulty in quickly heating a large amount of flowing liquid to a higher temperature.

[0005] The present application provides a multi-cavity flow heating element, comprising:

[0006] Frame;

[0007] A plurality of heating plates, each of which comprises a substrate and a heating coil, wherein the heating coil is disposed on a first side of the substrate, the substrates of the plurality of heating plates are welded to the outer frame to form a receiving cavity in cooperation with the outer frame, and the substrate of each of the heating plates serves as a side wall of the receiving cavity;

[0008] A plurality of heat-conducting fin modules are respectively arranged on the second side surfaces of the substrate of the corresponding heating plate and are heat-conductingly connected to the substrate, and the second side surfaces are arranged opposite to the first side surfaces;

[0009] A plurality of plate-shaped partition plates, the first sides of which are connected, are arranged in the accommodating cavity and divide the accommodating cavity into a plurality of chambers, at least one thermal fin module is arranged in each of the chambers, and the second sides of two adjacent partition plates are adjacent to or abut against the substrate of the corresponding heating plate, and are respectively located on the sides of the corresponding thermal fin module.

[0010] Optionally, the two partition plates located in the same direction are integrally formed plates.

[0011] Optionally, the plurality of partition plates are an integrally formed part, or the multi-cavity flow heating element further includes a main body column, and the first side edges of the plurality of partition plates are connected via the main body column.

[0012] Optionally, the main column is provided with a plurality of mounting slots to allow each of the partition plates to be detachably installed in a corresponding mounting slot.

[0013] Optionally, the angles between any two adjacent partition plates are the same.

[0014] Optionally, the outer frame includes a top cover, a bottom plate and a plurality of side strips, the bottom plate and the top cover are arranged relative to each other, two ends of each side strip are respectively connected to the top cover and the bottom plate, and the substrates of two adjacent heating plates are welded to the same side strip.

[0015] Optionally, the second side edge of each of the partition plates is welded to the corresponding side strip.

[0016] Optionally, the top cover is provided with two pipe openings, and the multiple chambers are connected to the outside through the two pipe openings; each of the partition plates is provided with an air avoidance area, and the air avoidance area is arranged adjacent to the corresponding pipe opening, and two adjacent chambers are connected through the air avoidance area.

[0017] Optionally, the thermal fin module includes a plurality of fins, the fins including a first boss and a second boss arranged at an alternating interval, the first boss and the second boss are both hollow inside, and the height of the first boss is greater than the height of the second boss, wherein the first boss and the second boss of a portion of the fins are connected to form a first channel, the first boss and the second boss of another portion of the fins are connected to form a second channel, and the first boss and the second boss of another portion of the fins are connected to form a third channel, so as to connect the first channel and the second channel.

[0018] Optionally, the thermal fin module includes a first fin, a second fin and a third fin, the first fin and the second fin are arranged opposite to each other, and the third fin is arranged between the first fin and the second fin; the first fin is provided with a first channel, the second fin is provided with a second channel, and the third fin is provided with a third channel to connect the first channel and the second channel; each partition plate is provided with a convex strip, which is located between the first fin and the second fin to separate the first channel and the second channel, and one end of the convex strip extends to the third fin.

[0019] As described above, the present application forms a sealed accommodating cavity by cooperating an outer frame and a plurality of heating disks, and arranges a plurality of plate-shaped partitions in the accommodating cavity, wherein the first sides of these partitions are connected, and the second sides of two adjacent partitions are adjacent to or abut against the substrate of the corresponding heating disk, so as to divide the accommodating cavity into a plurality of chambers, and each heating disk arranged in the corresponding chamber is electrically connected to generate heat to transfer the heat to the corresponding heat-conducting fin module, which is then transferred to the liquid in each chamber by the heat-conducting fin module, so as to realize liquid heating. Therefore, the present application can realize multi-cavity flow heating, has a high heating rate and energy conversion efficiency, and can quickly heat a large amount of flowing liquid to a higher temperature.

[0020] Furthermore, the present application also has a good spatial structure optimization effect by, for example, multiple chambers sharing one pipe opening as an inlet and another pipe opening as an outlet.

[0021] In addition, for the heat-conducting fin module in each chamber, the present application designs each fin to include a first boss and a second boss that are arranged at staggered intervals and have different heights. When the liquid is controlled to flow toward the outlet through the first boss and the second boss, the bubbles in the liquid can be punctured, thereby improving the dry burning caused by the bubbles adhering to the heating plate and the fins and reducing the risk of damage to the heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a multi-cavity flow heating element provided in an embodiment of the present application;

[0023] Figure 2 yes Figure 1 The xz cross-sectional schematic diagram of the multi-cavity flow heating element shown;

[0024] Figure 3 is an xz cross-sectional schematic diagram of another multi-cavity flow heating element provided in an embodiment of the present application;

[0025] Figure 4 is a schematic diagram of the relative positions of the heat conducting fin module and the heating plate at the first viewing angle;

[0026] Figure 5 is a schematic diagram of the relative positions of the heat conducting fin module and the heating plate at a second viewing angle;

[0027] Figure 6 It is a structural schematic diagram of a heat-conducting fin module provided in an embodiment of the present application;

[0028] Figure 7 It is a schematic diagram of the structure of a partition plate provided in an embodiment of the present application.

[0029] First direction x Second direction y Third direction z

[0030] Multi-chamber flow heating element 10

[0031] Chamber 10a

[0032] Frame 11

[0033] Cover 111 Bottom plate 112 Side strip 113 First pipe opening 114 Second pipe opening 115

[0034] Heating plate 12

[0035] Substrate 121 Heating coil 122 Solder pad 123

[0036] Thermal fin module 13

[0037] First fin 131 Second fin 132 Third fin 133

[0038] First boss 134 Second boss 135 Notch 136

[0039] Divider 14

[0040] The convex strip 141 of the avoidance area 14a DETAILED DESCRIPTION

[0041] In order to solve the above-mentioned problems existing in the prior art, in the multi-cavity flow heating element of the present application, a sealed accommodating cavity is formed by the cooperation of an outer frame and a plurality of heating disks, and a plurality of partition plates are arranged in the accommodating cavity. The first side edges of these partition plates are connected, and the second side edges of two adjacent partition plates are adjacent to or abut against the substrate of the corresponding heating disk, so as to divide the accommodating cavity into a plurality of chambers. The heating disks arranged in the corresponding chambers are electrically connected to generate heat to transfer the heat to the corresponding heat-conducting fin modules, which are then transferred to the liquid in each chamber by the heat-conducting fin modules to realize liquid heating. Therefore, the present application can realize multi-cavity flow heating with a high heating rate, and can quickly heat a large amount of flowing liquid to a higher temperature.

[0042] In the multi-cavity flow heating element, the specific form of the parameters such as the shape, quantity, size, etc. of each structural element including the outer frame, heating plate, heat conducting fin module and partition plate can be determined according to the actual application scenario and the required adaptability of the configuration, and this application does not limit it. For example, the cross-sectional shape of the accommodating cavity and each chamber can be as follows: Figures 1 to 3 The rectangle shown may also be other shapes, such as a triangle; in addition, each chamber (for example, at least one of the cross-sectional shape, length, width, height, volume, etc.) may be completely identical, or completely different or partially different.

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. In the absence of conflict, the following embodiments and their technical features can be combined with each other and also belong to the technical solutions of the present application.

[0044] In the description of the embodiments of the present application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the corresponding embodiments, rather than indicating or implying that a device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present application.

[0045] For the convenience of describing and understanding the scheme of the present application, the width direction of the multi-cavity flow heating element is referred to as the first direction x, the length direction (i.e., the height direction when in a standing position) is referred to as the second direction y, and the thickness direction is referred to as the third direction z. The first direction x, the second direction y, and the third direction z are perpendicular to each other and can be regarded as the three coordinate axes of a three-dimensional rectangular coordinate system. It should be understood that the so-called verticality in the whole application does not require that the angle between the two must be 90°, but allows for a deviation of, for example, ±10°, that is, the so-called verticality can be understood as the angle between any two directions being 80° to 100°. Similarly, the so-called parallelism in the whole application does not require that the angle between the two must be 0° or 180°, but allows for a deviation of, for example, ±10°, that is, the so-called parallelism can be understood as the angle between any two directions being 0° to 10° or 170° to 190°.

[0046] Please also read Figures 1 to 7 , shows a schematic diagram of the coordination of a multi-cavity flow heating element 10 and some of its structural elements according to an optional embodiment of the present application. The multi-cavity flow heating element 10 includes an outer frame 11, a plurality of heating plates 12, a plurality of heat-conducting fin modules 13, and a plurality of plate-shaped partition plates 14.

[0047] The outer frame 11 may include a top cover 111, a bottom plate 112, and a plurality of side strips 113. The bottom plate 112 and the top cover 111 are arranged up and down along the second direction y. The top cover 111 includes but is not limited to a dome-shaped structural member. Each side strip 113 may be a strip-shaped or plate-shaped structural member extending along the second direction y. The upper and lower ends of each side strip 113 are respectively connected to the top cover 111 and the bottom plate 112. Figure 2 and Figure 3As shown in the example, the xz cross section of the outer frame 11 is rectangular, and the outer frame 11 may include eight side strips 113. The xz cross section of the outer frame 11 is as follows: Figure 3 As shown in the rectangle, the eight side strips 113 may be respectively located at the four vertices of the rectangle and at the joint points between two adjacent vertices (a total of four joint points); the xz cross-sectional shape of the outer frame 11 may also be other polygons, and each side strip 113 may be respectively located at the vertices of the polygon and / or at the joint points between two adjacent vertices.

[0048] Each heating disk 12 includes a substrate 121 and a heating coil 122. The heating coil 122 is arranged on a first side of the substrate 121 and is used to generate heat when powered. The substrates 121 of these heating disks 12 are welded to the outer frame 11 to form a sealed accommodating cavity with the outer frame 11. The substrate 121 of each heating disk 12 serves as a side wall of the accommodating cavity, and the substrates 121 of two adjacent heating disks 12 are welded to the same side strip 113. Optionally, the welding method is electron beam welding, and the sealing effect after welding is better.

[0049] Each heat-conducting fin module 13 is arranged on the second side of the substrate 121 of the corresponding heating plate 12, and the second side is arranged opposite to the first side, that is, the first side and the second side are two large surfaces of the substrate 121 arranged opposite to each other along its thickness direction. In addition, each heat-conducting fin module 13 is thermally connected to the corresponding substrate 121 respectively. Each heat-conducting fin module 13 includes a plurality of fins, wherein a part of the fins is provided with a first channel, another part of the fins is provided with a second channel, and another part of the fins is provided with a third channel. One of the first channel and the second channel allows liquid to flow in, which can be called an "inflow channel", and the other allows liquid to flow out, which can be called an "outflow channel". The third channel is used to connect the first channel and the second channel, so that the liquid can flow to the outflow channel via the inflow channel and finally flow out. For ease of description, this application is described by taking the first channel as the inflow channel and the second channel as the outflow channel as an example. Other examples can also use the first channel as the outflow channel and the second channel as the inflow channel.

[0050] In other examples, the number of heating plates 12 and the side walls of the accommodating cavity is not one-to-one corresponding. For example, the number of heating plates 12 may be less than the number of side walls of the accommodating cavity. On this basis, the heat conducting fin module 13 and the heating plate 12 may correspond one-to-one, or, as Figure 3 As shown, the number of the heat-conducting fin modules 13 may be less than the number of the heating plates 12 , that is, not every heating plate 12 is correspondingly provided with a heat-conducting fin module 13 .

[0051] The first sides of all the partition plates 14 are connected, and the partition plates 14 are arranged in the accommodating cavity and divide the accommodating cavity into a plurality of chambers 10a. Figure 2 and Figure 3 As shown in the figure, a chamber 10a is defined between two adjacent partition plates 14, or in other words, two adjacent partition plates 14 serve as two side walls of a chamber 10a. The second side edge of each partition plate 14 is welded to the corresponding side strip 113. Each heat conducting fin module 13 is located in the corresponding chamber 10a, and the second side edges of two adjacent partition plates 14 are adjacent to or abut against the substrate 121 of the corresponding heating plate 12, and are respectively located on the side edges of the corresponding heat conducting fin module 13; Figure 2 As shown in the figure, for any chamber 10a with a triangular xz cross section, the second sides of two adjacent partition plates 14 are adjacent to or abut against the substrate 121 of a corresponding heating plate 12, and are respectively located on opposite sides of a corresponding heat conducting fin module 13; Figure 3 As shown in the figure, for any chamber 10 a with a rectangular xz cross section, the second sides of two adjacent partition plates 14 are respectively adjacent to or abut against the substrates 121 of the corresponding two heating plates 12 and are respectively located on the sides of the corresponding two thermal fin modules 13 .

[0052] In one example, two partition plates 14 located in the same direction are integrally formed plates, or all the partition plates 14 are integrally formed parts, which are convenient for installation in the accommodating cavity.

[0053] In another example, the multi-chamber flow heating element 10 further includes a main body column, and the first side edges of all the partition plates 14 are connected through the main body column. For example, the main body column is provided with a plurality of mounting grooves, and the first side edges of each partition plate 14 can be detachably mounted in the corresponding mounting groove, and the number of the partition plates 14 can be freely adjusted, thereby freely adjusting the number of the chambers 10a. The detachable mounting method of the first side edge of the partition plate 14 and the mounting groove includes, but is not limited to, snap-fitting, interference fit, and threaded engagement.

[0054] It should be noted that the partition plate 14 can be a heat-conducting plate with good thermal conductivity, or a plate with poor thermal conductivity or no thermal conductivity. For example, the partition plate 14 is an integrally formed plate, including but not limited to a plastic plate. In the scenario where the partition plate 14 is a heat-conducting plate (including but not limited to a metal plate), the liquids in two adjacent chambers 10a can conduct heat through the partition plate 14, which is conducive to ultimately achieving temperature balance of the liquids in these chambers 10a. Figure 7 As shown, each partition plate 14 may also be provided with a convex strip 141 to improve the structural strength of the partition plate 14 .

[0055] In one example, when observing along the second direction y, the angle α between any two adjacent partition plates 14 is the same, so that the volumes of the chambers 10a are the same, thereby achieving the same heating power and heating rate. Figure 2 and Figure 3As shown in the example, the angle α between any two adjacent partitions 14 is a right angle, which can realize multiple chambers 10a with the same volume. In other examples, the angle α between any two adjacent partitions 14 can be different or partially the same, so that the volumes of these chambers 10a are different or partially the same, and a scenario in which a rectangular chamber 10a and a non-rectangular chamber 10a coexist can be realized.

[0056] As described above, the present application divides the accommodating cavity into a plurality of chambers 10a by means of a plurality of partition plates 14, and each heating plate 12 is electrically heated to transfer heat to each heat-conducting fin module 13, and each heat-conducting fin module 13 then transfers heat to the liquid in the corresponding chamber 10a, thereby achieving liquid heating. In this way, the present application can achieve multi-cavity flow heating, with a high heating rate and energy conversion efficiency, and can quickly heat a large amount of flowing liquid to a high temperature.

[0057] Continue reading Figure 1 As shown, the top cover 111 of the outer frame 11 is provided with two pipe openings, which are respectively called the first pipe opening 114 and the second pipe opening 115. For the convenience of description, the first pipe opening 114 is regarded as a pipe opening (also called "inlet") that allows liquid to flow in, and the second pipe opening 115 is regarded as a pipe opening (also called "outlet") that allows liquid to flow out. The accommodating cavity (and any one of the multiple chambers 10a) is connected to the outside through the first pipe opening 114 and the second pipe opening 115. In one example, the upper part of the partition plate 14 is not completely joined to the top wall of the outer frame 11 (such as the top cover 111), that is, any two adjacent chambers 10a are not completely separated from each other, such as Figure 7 As shown, two air-avoiding areas 14a are provided on the upper part of the partition plate 14, which are respectively arranged adjacent to the corresponding pipe openings, and the two adjacent chambers 10a are connected through the air-avoiding area 14a of the partition plate 14 located between the two. Along the direction parallel to any partition plate 14, the liquid flows into the accommodating cavity from the first pipe opening 114, and is divided into two parts by the partition plate 14 after passing through the corresponding air-avoiding area 14a, one part flows into one of the chambers 10a, and the other part flows into another adjacent chamber 10a; similarly, the liquid in the two adjacent chambers 10a flows out from the second pipe opening 115 after being heated and passing through the corresponding air-avoiding area 14a. Here, these chambers 10a of the present application share one pipe opening (for example, the first pipe opening 114) as the inlet and another pipe opening (for example, the second pipe opening 115) as the outlet. For example, any two adjacent chambers 10a share one partition plate 14, so that there is also a good spatial structure optimization effect.

[0058] In one example, the top cover 111 of the outer frame 11 may be provided with a plurality of baffles inside thereof, and these baffles may define the flow direction of the liquid as a whole, so as to guide the liquid entering from the first pipe opening 114 toward the inlet channel (i.e., the first channel) of each heat-conducting fin module 13, and guide the liquid flowing out through the outlet channel (i.e., the second channel) of each heat-conducting fin module 13 toward the second pipe opening 115. The specific structural design of these baffles may be determined according to the adaptability of actual needs, and this application does not limit it. For example, the first guide groove is defined by the baffle, one end of each first guide groove is connected to the first pipe opening 114, and the other end extends to directly above the inlet channel of the heat-conducting fin module 13 of each chamber 10a; the second guide groove is defined by the baffle, one end of each second guide groove is connected to the second pipe opening 115, and the other end extends to directly above the outlet channel of the heat-conducting fin module 13 of each chamber 10a. After the liquid passes through the heat-conducting fin module 1 in each chamber 10a, it flows toward the second guide groove and finally flows out through the second pipe opening 115. In this process, the liquid flowing out through the outlet channel of the heat-conducting fin module 13 has a certain impulse. The overall force formed by the impulse toward the second guide groove can prevent liquid in other flows (for example, liquid flowing out through the first guide groove) from entering the second guide groove, thereby preventing the liquid before and after heating from mixing in each chamber 10a.

[0059] In one example, the side strip 113 of the outer frame 11 may be provided with a metal tube (not shown), which is connected to the inner wall of the side strip 113 and extends to the corresponding air avoidance area 14a. An opening is provided at one end of the metal tube connected to the outer frame 11 to allow a temperature sensor (such as NTC, i.e., Negative Temperature Coefficient thermistor) to be inserted into the metal tube from outside the outer frame 11, and the other end of the metal tube is closed to prevent liquid from entering the metal tube. The temperature sensor can detect the temperature of the liquid flowing in and out, respectively, and feed back to the control unit (such as the control board of the multi-cavity flow heating element 10 itself, or the control board of other equipment equipped with the multi-cavity flow heating element 10), so as to automatically adjust the heating power of the heating plate 12.

[0060] In one example, along a direction parallel to the partition plate 14, each pipe opening exposes a corresponding metal cylinder, where the two metal cylinders are located exactly at the inlet and outlet corresponding to the liquid, so that the internal temperature sensor can more accurately measure the temperature of the liquid when it flows in and out.

[0061] See also Figures 4 to 6 , a single heat conducting fin module 13 of the present application may include a plurality of fins, each of which includes a plurality of first bosses 134 and a plurality of second bosses 135 of different heights. Figures 4 to 6 In the illustrated scenario, a single heat-conducting fin module 13 includes a first fin 131, a second fin 132, and a third fin 133; along the width direction of the heat-conducting fin module 13, the first fin 131 and the second fin 132 are arranged opposite to each other, and the third fin 133 is arranged between the first fin 131 and the second fin 132. These fins can be aluminum alloy fins, or other fins that meet the heat conduction requirements.

[0062] Any one of the first fin 131, the second fin 132 and the third fin 133 is arranged in multiple rows (or multiple columns), and any one includes a first boss 134 and a second boss 135, also called "bosses", which are arranged alternately along the corresponding row direction (or the corresponding column direction).

[0063] For example, see Figures 1 to 5 As shown, with the second direction y as the vertical direction, the third fin 133 includes multiple rows of bosses, each row is provided with multiple first bosses 134 and multiple second bosses 135, and the first fin 131 and the second fin 132 respectively include multiple columns of bosses, each column is provided with multiple first bosses 134 and multiple second bosses 135. The so-called staggered arrangement can be understood as: in an arrangement direction of the same column or an arrangement direction of the same row, a second boss 135 is provided between any two adjacent first bosses 134, and a first boss 134 is provided between any two adjacent second bosses 135. There is a distance between any first boss 134 and the adjacent second boss 135 that is not equal to zero, that is, the two are arranged oppositely along the arrangement direction. Here, a notch 136 can be formed between the adjacent first bosses 134 and the second bosses 135 located in the same row or the same column.

[0064] It should be understood that the number of rows of bosses included in the third fin 133, the number of columns of bosses included in the first fin 131 and the second fin 132, and the number of first bosses 134 and second bosses 135 provided in each row and column are not limited in this application; the first fin 131 shown in the figure is provided with seven columns of bosses, the second fin 132 is provided with six columns of bosses, and the third fin 133 is provided with six rows of bosses, which is only for exemplary display.

[0065] In one example, along the line of sight perpendicular to the thermal fin module 13, the orthographic projection of the third fin 133 is trapezoidal as a whole; along the direction from the first fin 131 to the second fin 132, the length of each row of the first fin 131 (i.e., the length along the second direction y) decreases successively; along the direction from the second fin 132 to the first fin 131, the length of each row of the second fin 132 decreases successively. One end of each row of bosses of the third fin 133 is adjacent to a column corresponding to the first fin 131 and is connected to the hollow interior, and the other end is adjacent to a column corresponding to the second fin 132 and is connected to the hollow interior. Here, each third channel of the third fin 133 can be adjacent to and connected to the corresponding first channel and second channel. To adapt to this, the specific shapes of each first boss 134 and each second boss 135 can be adaptively designed, for example, in Figures 4 to 5 In the example shown, in the adjacent area between the third fin 133 and the first fin 131 and the second fin 132 , the shape of the first boss 134 is different from that in other areas, and the shape of the second boss 135 in the adjacent area is also different from that in other areas.

[0066] like Figures 4 to 6 As shown, in either the first fin 131 or the second fin 132, the first bosses 134 in the same row are aligned, and the second bosses 135 in the same row are aligned. Optionally, in the third fin 133, the first bosses 134 in the same column are aligned along the second direction y, and the second bosses 135 in the same column are aligned along the second direction y. This alignment allows the gaps 136 between the first boss 134 and the adjacent second bosses 135 to be aligned, which is beneficial for the liquid to flow smoothly toward the predetermined outlet when it flows out of the first boss 134 or the second boss 135 through the gap 136, and to flow back into the first boss 134 or the second boss 135.

[0067] The first boss 134 and the second boss 135 are both hollow inside. For example, the cross-section of any boss can be trapezoidal, and its upper wall and two side walls are both sheet-like parts, which are connected to each other to form a boss. In any of the first fin 131, the second fin 132 and the third fin 133, any first boss 134 is connected to the bottom of the adjacent second boss 135, the bottoms of any two adjacent first bosses 134 are connected, and the bottoms of any two adjacent second bosses 135 are connected. Here, for any fin, a groove is formed between two adjacent rows or two adjacent columns of bosses, and the groove is connected to the inside of the corresponding boss through the notch 136. The groove can also be regarded as the corresponding first channel, third channel and second channel. The cross-sectional shape of any fin (the cross-sectional shape of the first fin 131 and the second fin 132, and the cross-sectional shape of the third fin 133) is wavy as a whole, which is convenient for heat dissipation, and can quickly dissipate the heat to quickly transfer it to the liquid, and also increase the heat conduction time between the liquid and the fin. In addition, any fin can be an integrally formed structural part, which can not only be produced, manufactured, transported and sold as an independent individual, but also facilitates rapid welding and assembly with a heating plate.

[0068] In one example, the bottoms of the first bosses 134 and the second bosses 135 of all fins and / or a portion of the fins are located on the same plane, and can be well welded to the flat heating plate 12 .

[0069] See also Figures 4 to 6 In each row of the first fins 131, the plurality of first bosses 134 and the plurality of second bosses 135 are hollowly connected in the second direction y, thereby forming a first channel, through which the liquid flows, for example Figure 1 The first nozzle 114 shown flows into the first channel. In each column of the second fins 132, the plurality of first bosses 134 and the plurality of second bosses 135 are hollowly connected in the direction opposite to the second direction y, thereby forming a second channel. In each row of the third fins 133, the plurality of first bosses 134 and the plurality of second bosses 135 are connected in the width direction of the heat conducting fin module 13 to form a third channel for connecting the first channel and the second channel, see Figure 6 The liquid flow direction indicated by the blank arrow in the middle allows the liquid to flow through the first channel of the first fin 131 to the second fin 132 and finally flow out of the second channel. Optionally, the liquid can flow through, for example, Figure 1 The second nozzle 115 shown flows out to the target area. During the flow process, the first fin 131, the second fin 132 and the third fin 133 transfer the heat from the heating plate 12 to the liquid flowing through their respective surfaces and the vicinity, thereby heating the liquid.

[0070] The height of the first boss 134 is designed to be greater than the height of the second boss 135 in the present application, and the so-called height is the maximum length in the direction perpendicular to the heat-conducting fin module 13. This is equivalent to designing each heat-conducting fin to have bosses of different heights. When the heat-conducting fin module is applied to a flow heater, during the flow of liquid, the height difference formed by the bosses of different heights will disturb the original flow direction of the liquid, thereby generating additional force on the bubbles in the liquid, thereby puncturing the bubbles in the liquid, thereby improving the dry burning caused by the bubbles adhering to the heating plate 12 and the fins, and reducing the risk of damage to the heating plate 12.

[0071] In one example, the first boss 134 includes a first portion and a second portion disposed vertically along the thickness direction of the heat conducting fin module 13, the second portion being disposed below the first portion, and the two portions may actually be an integrally formed structural member, that is, the two portions referred to herein are only for the convenience of description, and do not limit the two portions to be independently manufactured and then spliced ​​to form the first boss 134. For the adjacent first boss 134 and second boss 135 located in the same direction, when observed along the same direction in which the two are located, the orthographic projections of the second boss 135 (the portion except the top wall) and the second portion of the first boss 134 overlap.

[0072] In one example, the number of columns of the first fins 131 is greater than the number of columns of the second fins 132, and the number of first channels is greater than the number of second channels. The time for the liquid to flow through and exchange heat with the heat-conducting fin module is longer, so that the liquid can be better heated to a required temperature in a short time. The number of columns of the second fins 132 and the number of rows of the third fins 133 can be equal. For the bosses in the first fins 131 that are not connected to the corresponding third fins 133, such as the outermost column of bosses, the first channel formed by them can be diverted to part of or all of the third channels of the third fins 133 through the notch 136.

[0073] It should be understood that the multi-cavity flow heating element 10 provided in the present application is a complete device and also has the corresponding structure of the known device, which will not be described one by one here. For example, it is also provided with a plurality of pads 123 connected to the heating coil 122 and used to connect the heating coil 122 to electricity and ground.

[0074] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. For ordinary technicians in this field, all equivalent structural changes made using the contents of this specification and drawings are also included in the patent protection scope of the present application.

[0075] Although the terms "first, second", etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. In addition, the singular forms "one", "an", and "the" are intended to include plural forms as well. The terms "or" and "and / or" are interpreted as inclusive, or mean any one or any combination. Only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way, an exception to this definition will occur.

Claims

1. A multi-chamber flow heating element, characterized in that: include: Frame; A plurality of heating plates, each of which comprises a substrate and a heating coil, wherein the heating coil is disposed on a first side of the substrate, the substrates of the plurality of heating plates are welded to the outer frame to form a receiving cavity in cooperation with the outer frame, and the substrate of each of the heating plates serves as a side wall of the receiving cavity; A plurality of heat-conducting fin modules are respectively arranged on the second side surfaces of the substrate of the corresponding heating plate and are heat-conductingly connected to the substrate, and the second side surfaces are arranged opposite to the first side surfaces; A plurality of plate-shaped partition plates, the first sides of which are connected, are arranged in the accommodating cavity and divide the accommodating cavity into a plurality of chambers, at least one thermal fin module is arranged in each of the chambers, and the second sides of two adjacent partition plates are adjacent to or abut against the substrate of the corresponding heating plate, and are respectively located on the sides of the corresponding thermal fin module.

2. The multi-cavity flow heating element according to claim 1, characterized in that: The two partition plates located in the same direction are integrally formed plates.

3. The multi-chamber flow heating element according to claim 1, characterized in that: The plurality of partition plates are integrally formed parts, or the multi-cavity flow heating element further comprises a main body column, and the first side edges of the plurality of partition plates are connected via the main body column.

4. The multi-chamber flow heating element according to claim 3, characterized in that: The main column is provided with a plurality of mounting slots to allow each of the partition plates to be detachably mounted in the corresponding mounting slot.

5. The multi-chamber flow heating element according to any one of claims 1 to 4, characterized in that: The included angles between any two adjacent partition plates are the same.

6. The multi-chamber flow heating element according to claim 1, characterized in that: The outer frame includes a top cover, a bottom plate and a plurality of side strips. The bottom plate and the top cover are arranged opposite to each other. The two ends of each side strip are respectively connected to the top cover and the bottom plate. The substrates of two adjacent heating plates are welded to the same side strip.

7. The multi-chamber flow heating element according to claim 6, characterized in that: The second side edge of each of the partition plates is welded to the corresponding side edge strip.

8. The multi-cavity flow heating element according to claim 6, characterized in that: The top cover is provided with two pipe openings, and the plurality of chambers are connected with the outside through the two pipe openings; Each of the partition plates is provided with an air avoidance zone, the air avoidance zone is arranged adjacent to the corresponding pipe opening, and two adjacent chambers are communicated with each other through the air avoidance zone.

9. The multi-chamber flow heating element according to claim 1, characterized in that: The thermal fin module includes a plurality of fins, wherein the fins include a first boss and a second boss arranged at an alternating interval, wherein the first boss and the second boss are both hollow inside, and the height of the first boss is greater than the height of the second boss, wherein the first boss and the second boss of a portion of the fins are connected to form a first channel, the first boss and the second boss of another portion of the fins are connected to form a second channel, and the first boss and the second boss of another portion of the fins are connected to form a third channel to connect the first channel and the second channel.

10. The multi-chamber flow heating element according to claim 1 or 9, characterized in that: The heat conducting fin module comprises a first fin, a second fin and a third fin, wherein the first fin and the second fin are arranged opposite to each other, and the third fin is arranged between the first fin and the second fin; the first fin is provided with a first channel, the second fin is provided with a second channel, and the third fin is provided with a third channel to connect the first channel with the second channel; Each partition plate is provided with a convex strip, which is located between the first fin and the second fin to separate the first channel from the second channel, and one end of the convex strip extends to the third fin.

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