TWI623716B - Culvert fluid heater - Google Patents

Abstract

The utility model relates to a culvert fluid heater, which is a culvert heater which can quickly exchange heat with a heat source during a fluid flow path, and uses a ceramic resistor piece as a basic component for rapid electric heating conversion, and the outer surface is insulated and encapsulated. The nearest distance is directly connected to the heat-dissipating unit, and the completed heat exchange unit is placed in the heat-insulating encapsulating casing, and the outer casing of the heat-insulating heat-insulating casing is enclosed and forms a culvert heat exchange channel for heat exchange. The fluid of the unit is a high probability of contacting the surface of the tropical finned part of the heat dissipating unit for efficient heat exchange operation.

Description

Culvert fluid heater

A culvert fluid heater is a culvert heater that provides heat exchange between a fluid and a heat source during a fluid flow path.

Functional applications of related fluid heaters, such as those used in automobiles and buses, for pre-heating of water or general oil bodies, even for diesel engines, for the heating of experimental fluids by biochemical instruments, especially More precise heating work is required to provide thermal energy stability to the heated fluid, and heating must be instantaneously changed.

In order to change the temperature of the heated fluid instantaneously, there is a fluid heating device of Taiwan Patent No. 86100590, in which a quartz sleeve is disposed in the center of a tube, and the quartz sleeve is internally coated with a heat radiation generator to utilize the heat. The refraction of the radiation, after passing through the quartz sleeve coaxially placed inside the fluid pipeline, heats the fluid flowing through the adjacent side of the quartz sleeve, so that the heating work is located in the center of the flow path, and the temperature can be instantaneously started and the heating can be stopped instantaneously. The temperature of the liquid flowing through the heating device can be instantly controlled.

The heating is performed by the refraction of heat radiation to direct the heat mass to the liquid flowing therethrough. The quartz casing is made of hard and brittle material, so that the environment applied by the device must be in a stable environment, which is not suitable for mobile vehicles. Especially for off-road vehicles or trucks, there are often shock waves that are shaken by the road surface. The tube produces a mechanical hazard, and the generated thermal radiation is heated on the surface of the quartz sleeve. If the fluid flowing through is thermally reacted by the thermal radiation and coked, the coking layer will block the range of the heat radiation, and the heat The mass transfer is the highest on the surface of the quartz sleeve. In the pipeline section of the fluid, away from the surface of the quartz sleeve, the degree of heat loss is inversely proportional to its distance, and the quartz sleeve is coaxially centered. The friction between the inner wall surfaces of the pipelines varies, and the fluid flowing through them cannot contact the quartz casing with the same probability due to turbulent flow changes. The heat temperature is not uniform, and the emitted heat radiation is not fully utilized, then the energy is consumed or heated. Inefficient.

The utility model relates to a culvert fluid heater, which is an electrothermal culvert heater capable of rapidly exchanging heat with a heat source during a flow passage of a fluid, and encloses a cabin provided inside the casing by a heat-resistance The combination of a square-type heat exchange unit has a flat-shaped distributed heat exchange channel symmetrically formed on the pressing surface of the upper and lower heat-insulating housings, so that the fluid passing through and the heat exchange unit are both upper and lower sides. The surface of the tropical release member can be contacted at a high probability. The system uses a positive temperature coefficient ceramic resistor piece that can work quickly and heat as the electrothermal working core of the heat exchange unit, and combines the heat dissipation unit at a close distance to allow the generated heat energy. It can be quickly conveyed to reduce the volume and reduce the heat capacity of the heating core at startup. It needs to heat up the heat capacity of the previous heating, and greatly increase the heating efficiency, or reduce the large heat capacity residue when shutting down, affecting the temperature of the fluid flowing out from the subsequent the main purpose.

Another object of the present invention is that the heat generating unit is provided with a positive electrode sheet and a negative electrode sheet, and the two outer surfaces are After the insulating sheets are bonded, the periphery is encapsulated by an encapsulating layer to form watertight and insulating.

The third object of the present invention is that the tropical discharge member provided in the heat exchange unit is a tropical fin member, and a heat exchange channel is provided, and the heat exchange channel provides fluid passage and promotes the fluid to contact the set tropical fin. The appearance of the piece.

The fourth object of the present invention is that the tropical discharge member provided in the heat exchange unit is an array of tropical discharge cylinders, and the flowing fluid passes through the heat exchange network, and the fluid flow line can be multi-directionally expanded to obtain High probability of contact with the surface of the tropical release cylinder.

The fifth object of the present invention is that the prismatic prism has a prismatic cross section, and the inclined surface of the prism is facing the inflow direction of the water inlet, so that the fluid flowing through the heat exchange network can form multiple directions due to the component force. The flow allows any surface around the cylinder to be fluidly affected by a high probability.

A sixth object of the present invention is a cabin provided by a heat-resistant encapsulating casing, wherein upper and lower surfaces of the heat exchange unit are sandwiched and fixed by crimping.

The seventh object of the present invention is to provide an elastic layer between the upper and lower surfaces of the cabin provided inside the heat-resistant encapsulating casing and the upper and lower surfaces of the heat exchange unit, thereby forming an elastic pinch fixing force and absorbing fluid The coefficient of superheat expansion and the combined elastic crimping force.

The eighth object of the present invention is that the interior of the heat-resistant encapsulating casing is centrally provided with a pressure channel groove and a collecting channel groove on both sides, and the pressure channel groove provides a water inlet to introduce fluid, and the resistance generated by the heat exchange unit is generated. When the pressure is increased, the collecting channel groove and the water outlet are connected, and the collecting channel groove collects the fluid flowing through the heat exchange unit, and forms a mixing function, so that the temperature of the fluid output from the water outlet is uniform.

10‧‧‧Ceramic resistors

100‧‧‧Heat exchange unit

1‧‧‧Fever unit

11‧‧‧ positive electrode

12‧‧‧Negative electrode

110‧‧‧ positive terminal

120‧‧‧Negative terminal

13‧‧‧Insulation board

14‧‧‧Encapsulation layer

15‧‧‧Power supply

140‧‧‧ Rubber Filling Department

2‧‧‧Hot scatter unit

21‧‧‧floor

210‧‧‧ Crimp plane

22‧‧‧Tropical fins

23‧‧‧Heat exchange channel

24‧‧‧Tropical release cylinder

240‧‧‧ prismatic bevel

25‧‧‧Heat Exchange Network

3‧‧‧Heat-resistant enveloped housing

32‧‧‧ Pressing surface

31‧‧‧ sockets

30‧‧‧ cabin

L0‧‧‧ slotting

L1‧‧‧ cutting line

L2‧‧‧ cutting line

L3‧‧‧ cutting line

4‧‧‧Sealing parts

41‧‧‧With slot

5‧‧‧Elastic layer

T‧‧‧Bottom thickness

D‧‧‧ cutting depth

61‧‧‧ Inlet

62‧‧‧Water outlet

610‧‧‧pressure channel

620‧‧‧ Collector channel

S‧‧‧ streamline

200‧‧‧ end face

G‧‧‧Water film gap

Figure 1 is a combination diagram of the heat exchange unit of the present invention.

Figure 2 is a schematic diagram of the combination of the heat exchange unit of the present invention.

Figure 3 is a cross-sectional view showing the internal structure of the present invention.

Figure 4 is a schematic view showing the combination of the heat exchange unit of the present invention combined in the interior of the heat-resistant envelope.

Fig. 5 is a schematic view showing the processing method of the heat dissipating unit and the forming grooving provided in the present invention.

Figure 6 is a top view of the hot-discharge unit of the present invention, which is formed by cutting the grooving through the slanting direction to form a tropical discharge cylinder.

Figure 7 is a schematic view showing the water film gap provided in the heat dissipating unit of the present invention.

In relation to the culvert fluid heater of the present invention, in order to provide a fluid flow path, the fluid needs to pass through the water flow duct provided by the superheat dispersing unit 2, so that the fluid can quickly exchange heat of the culvert heater, and the system utilizes The square sheet positive temperature coefficient ceramic resistor sheet 10 is a basic component of electrothermal conversion to constitute a heat generating unit 1, which can rapidly generate thermal energy, and because the heat generating unit 1 is small in size, so that the heat capacity is small, and the temperature can be rapidly increased or The heat-recovering unit 10 is formed by the ceramic resistor sheet 10, and the heat-dissipating unit 2 is combined with the closest distance on both sides of the heat-generating unit 1 to form a heat exchange unit 100, and the heat exchange unit 100 is filled. The method is directly connected to the cabin 30 disposed inside the heat-insulating enclosure 3, and the two sides of the cabin 30 respectively form a pressure channel 610 and a collecting channel groove 620, which pass through the pressure channel groove 610 and the collecting channel groove 620. The fluid is in full contact with the surface of the tropical sump structure provided by the heat dissipating unit 2 of the heat exchange unit 100, so that the fluid can quickly absorb the heat energy generated by the heat generating unit 1 and greatly improve the heat conversion efficiency. Release structure In this embodiment the fin 22 is put tropical or tropical discharge cylinder 24, and said ducted for the passage of heat exchange or heat exchange channels 23 through the plane of the web 25 path.

The tropical discharge structure is a tropical finned member 22 or a tropical discharged cylinder 24, so that the fluid flowing therethrough can contact the surface with high probability during the flow through, and the thermal energy of the starting thermal unit 1 can be quickly exchanged.

For the device and working principle applied in the detailed implementation of the present invention, please refer to the following description. First, referring to FIG. 1 , the core of the heat exchange of the present invention is a heat exchange unit 100, and the heat exchange unit 100 is The heat generating unit 1 is composed of a positive temperature coefficient ceramic resistor sheet 10, and the ceramic resistor sheet 10 is electrically conductive on the upper and lower surfaces, respectively contacting and bonding a positive electrode. The sheet 11 and the negative electrode sheet 12, the positive electrode sheet 11 and the negative electrode sheet 12 are indirectly provided with an insulating plate 13 outwardly and outwardly to form a heat generating unit 1 which can generate heat after being energized, and is insulated from the outside.

The overall appearance of the heating unit 1 is further covered by the encapsulating adhesive layer 14 and the lower three-dimensional, and the heating unit 1 after the encapsulating adhesive layer 14 is completely insulated and waterproofed, and the upper and lower surfaces of the heating unit 1 are indirectly encapsulated with the adhesive layer 14 The film layer is then combined with the heat dissipating unit 2 in such a manner that the bonding plane 210 of the bottom plate 21 provided by the heat dissipating unit 2 is adhesively bonded by the adhesiveness of the encapsulating layer 14.

Referring to FIG. 2, the heat exchange unit 100 is formed into a heat exchange unit 100. The heat exchange unit 100 is formed in a square shape or a square strip shape. The ceramic resistor sheet 10 can be a plurality of flat surfaces. After the lower surface is electrically coupled to the positive electrode tab 11 and the negative electrode tab 12, the positive terminal 110 and the negative terminal 120 are extended to provide electrical conduction with the outside, and the positive terminal 110 and the negative terminal 120 extend from the side, which can be filled through the rubber. The filling of the portion 140 and the horizontal circumference of the group of the ceramic resistor sheets 10 can be similarly filled by the filling portion 140, and the filling of the filling portion 140 is extended and adhered to the corner end of the heat dissipating unit 2, so that the heating unit 1 is The periphery of the heat dissipating unit 2 is provided with a bottom plate 21, and the bottom surface of the bottom plate 21 is a crimping plane 210. The crimping plane 210 and the heat generating unit 1 can be mechanically clamped or glued. The crimping combination, the thermal temperature of the ceramic resistor 10 of the system is transmitted to the bottom plate 21 of the heat dissipating unit 2 at the closest distance via the heat balance operation, and the bottom plate 21 is retransmitted. A tropical release member such as a tropical fin member 22 is provided for projecting outward.

Referring to FIG. 3 and FIG. 4 again, the completed heat exchange unit 100 is inserted into the cabin 30 disposed inside the heat-insulating enclosure 3 in a manner of filling the space and is fixedly combined. The sealing casing 3 externally conducts the pressure channel 610 and the collecting channel groove 620 respectively corresponding to the inside through a water inlet 61 and the water outlet 62, and the heat exchange unit 100 introduces working electric power via the power source 15, and the fluid flows in from the water inlet 61, after The pressure channel groove 610 is steered, and the culvert flowing through the heat entanglement unit 2 of the heat exchange unit 100, such as the heat exchange channel 23, performs a heat exchange operation, and finally is collected into the collecting channel groove 620 and outputted by the water outlet 62, flowing through The fluid is a surface of the tropical discharge structure that is in full contact with the heat dissipation unit 2, and the fluid that flows in from the water inlet 61. At the position of the pressure channel groove 610, due to the resistance generated by the structure of the heat exchange unit 100, the reverse pressure is applied. The pressure is formed in the groove 610, and the pressure can fully press the fluid into the heat exchange unit 100. The fluid passing through the heat exchange unit 100 generates a mixed flow at the position of the collecting groove 620, and the fluid output from the water outlet 62 is outputted. Uniform temperature, where pressure The direction of the water flow of the channel 610 is perpendicular to the flow direction through the heat exchange unit 100, so that the heat exchange unit 100 can exert a significant damping effect on the fluid flowing therethrough, and the set of nitrogen acts to increase the flow of the fluid and heat exchange unit 100. The surface of the tropical release structure increases the contact pressure, and the heat quality of the heat exchange unit 100 can be more effectively exchanged for efficient heat exchange.

Referring to FIG. 4 again, the heat exchange unit 100 is combined with the cabin 30 disposed inside the heat-insulating enclosure 3, which is filled in a space defined by the cabin 30 in a filling manner, and its longitudinally accessible resistance The front and rear positions of the heat-sealing casing 3 are heat-encapsulated, and the upper and lower portions of the heat exchange unit 100 are pressed by the pressing surface 32 of the inner surface of the heat-resistant sealing casing 3, and the force of the crimping fixes the heat exchange unit 100. The heat exchange unit 100 is effectively positioned, and the heat exchange unit 100 is contacted by the heat dissipating unit 2 connected to the upper and lower sides of the heat generating unit 1 toward the outer surface, and the pressing surface 32 provided on the upper and lower surfaces of the cabin 30 is in contact with each other. A pinching fixing force may occur, and an elastic layer 5 may be indirectly disposed between the pressing surface 32 and the upper and lower surfaces of the heat exchange unit 100, and the elastic layer 5 is further provided by an elastic layer in addition to elastic pressure. 5 its own elastic deformation force, The volume of expansion of the acceptable fluid due to the temperature rise can be absorbed by the amount of deformation of the elastic layer 5, in particular, the state in which the heat generating unit 1 generates heat and the fluid has not been discharged.

The heat exchange unit 100 is a passage surrounded by the cabin 30 and penetrates the pressure channel groove 610 and the collecting channel groove 620 (shown in FIG. 3), and is a tropical floating structure using the heat dissipation unit 2, such as a tropical fin. The member 22, and the spaced apart heat exchange channels 23 provide fluid flow through the fluid flow heat exchange channel 23, which will be in contact with the horizontal bottom surface of the majority of the tropical fin members 22 and the peripheral surface, and the heat generating unit 1 occurs. The thermal temperature is directed to the heat dissipating unit 2 at a short distance, so that the thermal dissipating unit 2 can quickly extract the thermal mass of the heat generating unit 1 and exchange it with the tropical finned member 22 and the heat exchange channel 23 to flow through. fluid.

The heat generating unit 1 is provided with a positive electrode sheet 11 and a negative electrode sheet 12. The positive electrode sheet 11 and the negative electrode sheet 12 are electrically connected to each other via the positive terminal 110 and the negative terminal 120. The positive terminal 110 and the negative terminal 120 are connected to each other. First, the two through slots 41 are provided through a connector 4, and are subjected to a plugging action to seal the surface of the positive terminal 110 and the negative terminal 120 with the inner surface of the through slot 41, and the sealing member 4 is plugged. Pressing the sleeve hole 31 provided in the heat-insulating enclosure 3 to form a watertight function, the sealing member 4 and the water inside the compartment 30 are blocked from the positive terminal 110 and the negative terminal 120 to form watertight and electrically The insulating material, the sealing member 4 and the heat exchange unit 100 can be further glued to each other by the filled rubber filling portion 140, and the positive electrode terminal 110 and the negative electrode terminal 120 can be insulated and watertightly encapsulated, and the exposed positive electrode terminal 110 and negative electrode terminal are provided. The 120 is connected to the power source 15 (in conjunction with FIG. 3), and the power source 15 determines the operating timing and state of the heat exchange unit 100.

The above-described heat generating unit 1 is composed of a plurality of ceramic resistor sheets 10, and the positive electrode sheet 11 and the negative electrode sheet 12 may be a plurality of groups, and the same positive electrode terminal 110 and negative electrode terminal 120 may be a plurality of groups. 110. The power of the plurality of groups of the negative terminal 120 is respectively turned on or off, and the heating power of the heat generating unit 1 can be adjusted.

Referring to FIG. 5 again, the heat dissipating unit 2 is a material having good heat conduction efficiency, such as an aluminum metal alloy, and the heat dissipating unit 2 is provided with a tropical fin member 22 and a fin portion 22 spaced apart from each other. between The heat exchange channel 23 is connected by a bottom plate 21, the lower surface of the bottom plate 21 is a crimping plane 210, and the heat exchange channel 23 is a straight groove shape for fluid to flow therethrough.

In order to enlarge the heat exchange area and the direction in which the fluid flows, the flow may be multi-directionally spread. On the surface of the heat dissipation unit 2, the cutting line L1, the cutting line L2, the cutting line L3, etc. are cut at a depth of a cutting depth D. The groove L0 (as shown in Fig. 6), after leaving the same thickness T as the bottom plate 21, can cut out a plurality of columnar bodies to form the tropical discharge column 24.

Referring to FIG. 6 (please cooperate with FIG. 4), the heat dissipating unit 2 is provided with parallel tropical fin members 22 and heat exchange channels 23, and the tropical fin members 22 have a height through the cutting line L1. After cutting in different directions, such as the cutting line L2 and the cutting line L3, the array of tropical discharge cylinders 24 remains to form a planar heat exchange network 25, which can be provided by the pressure channel groove The fluid from the stream 610 forms a shunting effect, so that the surrounding of the columnar body has a high probability of being contacted by the shunting fluid.

After the fluid flows through the heat exchange network 25 separated by the majority of the array of tropical discharge cylinders 24, it will be collected in the collection channel 620, and the collection channel 620 can be formed by multidirectional diversion due to the incoming fluid flow line. The mixed flow causes the fluid to obtain an optimum uniform temperature to be output from the water outlet 62.

The cutting direction of the cutting line L1, the cutting line L2, the cutting line L3, and the like may be perpendicular or oblique to the heat exchange channel 23 or the tropical fin member 22. After being vertically opened, a tropical matrix of most matrix arrays is formed. The body 24, after the oblique relationship is cut, the tropical discharge cylinder 24 forms a prism with a prismatic section, and the obliquely cut prismatic cylinder is formed with a prismatic slope 240, and the orientation of the prism slope 240 is Facing the direction of inflow from the water inlet 61, the flow line S of the fluid can be turned by more than 90 degrees, the critical point of the turn will cause the water flow to differentiate, and the flow line S entering the heat exchange network 25 has a chance to be in reverse contact. The other back surface of the tropical discharge cylinder 24, as well as the flow line S, will dampen the fluid due to the turning, and the damping effect will form a back pressure, so that the inflowing fluid will also generate a large pressure inside the heat exchange unit 100, so that the fluid Can press against the surrounding surface of the tropical release cylinder 24, increasing the force of its contact, from The heat efficiency of the tropical discharge cylinder 24 is improved.

The tropical discharge members of the heat dissipating unit 2 are arranged in a columnar array, and the heat exchange network 25 which is interlaced by the warp and weft is spaced apart. For the inflowing fluid, the fluid is continuously changed due to the continuous change of the path, and the fluid flowing through is generated by the fluid. The pressure generated by the group of effects and the direction of the flowing stream can be changed, and the higher probability of heat exchange operation can quickly get the fluid to extract heat energy, and after stopping the operation, the heat generating unit 1 and the heat dissipating unit The short distance is communicated between the two. After the heat unit 1 is stopped, the heat dissipation unit 2 loses the residual heat capacity, so the heat energy is immediately lost, so that the fluid output from the shutdown operation can also be quickly cooled (returned).

"The above-described heat exchange channel 23 (and the heat exchange network 25) has the same height as the hot fin unit 22 (shown in Figures 3 to 6). The upper surface is pressed by the upper and lower pressing faces 32 of the inner portion of the cabin 30, and the upper end surface of the heat exchange channel 23 (with the heat exchange network 25) is sealed, and the heat exchange channel 23 (and the heat exchange network 25) is The built-in fluid ducts (ie, the heat exchange channel 23, the heat exchange network 25), the water flow is regulated to enter and exit only from the duct, so the large probability and the tropical structure of the heat dissipating unit 2 (tropical fins 22 or The tropical discharge cylinder 24) has a peripheral surface contact for heat exchange, while the heat exchange channel 23 or the bottom of the heat exchange network 25 also provides a large amount of thermal mass to the fluid. 』

Please refer to FIG. 7 again, the thermal mass generated by the heating unit 1 is the upper and lower two heat dissipating units 2 transmitted to the opposite surface on the upper and lower sides, and the thermal dispersing unit 2 is respectively provided with the tropical fins. The member 22 or the tropical discharge cylinder 24 is used to regulate the heat exchange channel 23 or the heat exchange network 25 to provide fluid flow. The thermal mass generated by the ceramic resistor 10 is also heated by the upper and lower faces. The bulk cell 2 is balancedly conducted. In the structure of the heat dissipating unit 2, the maximum thermal mass first acts on the bottom plate 21, and then is conducted by the bottom plate 21 to each of the tropical fin members 22 or the tropical floating column 24, and the tropical fins are 22 or a heat exchange channel 23 or a heat exchange network 25 partitioned from the tropical discharge cylinder 24 to provide fluid flow through to obtain a high probability of contacting the surface of the tropical fin member 22 or the tropical discharge cylinder 24 to obtain High efficiency heat exchange operation.

The heat exchange unit 100 is formed by the pressing surface 32 of the cabin 30 provided in the heat-insulating heat-insulating housing 3, and the contact surface of the clamped surface is directly pressed against the contoured tropical fins 22 or The outwardly facing contour surface (end surface 200) of the tropical discharge cylinder 24 is flowed in a regulated fluid compliant heat exchange channel 23 or heat exchange network 25, in which state the heat exchange of the fluid is in the heat exchange channel 23 or heat. The three sides of the trench of the switching network 25, and the tropical fin member 22, the tropical plug cylinder 24 facing the outer end surface 200 (contour surface), are still the surface of the tropical floating structure, although the thermal mass is transmitted from the bottom plate 21 to the end. It has been placed, but there is still a large amount of residual temperature remaining on the end surface 200 (in the case where the heat balance efficiency is high or the tropical fin member 22 and the length of the tropical floating cylinder 24 are short), so the thermal quality of the end surface 200 It can also be exchanged and utilized.

Since the heat capacity or temperature energy of the end face 200 is extinguished, the present invention further reduces the volume of fluid that is intended to flow through the affinity end face 200, which is implemented at the end of the tropical fin member 22 (tropical release cylinder 24). A water film gap G is spaced between the surface 200 and the pressing surface 32 to provide a small amount of water flowing from the water film gap G to replace the thermal mass of the end surface 200, wherein the height of the water film gap G is smaller than the tropical The minimum width of the cross-section of the fin 22 or the tropical discharge cylinder 24 reduces the amount of water flowing through the end face 200 by a thin film like a water film that flows over the end face 200 to exchange heat.

The invention provides a fluid flowing through, which can be quickly heated by the heat exchange unit 100 during the stroke, and the fluid outputted after the heat exchange unit 100 is stopped can be rapidly cooled, and the formed system can be applied to a working environment requiring rapid heating, such as The car's wiper hot water supply, or diesel engine preheating for diesel, or the application of biochemical instruments, can accurately operate the required temperature, as well as the structure is simple, the structure is very solid, especially the heating core of the invention uses the positive temperature coefficient The ceramic resistor 10, which works in a heat balance manner, is transmitted via the close-distance and heat dissipating unit 2, and the excited thermal energy can be quickly taken by the heat dissipating unit 2, and the fluid is guided by the path of the duct to make the path It can be used for heat exchange with the surface of the tropical release structure of the heat dissipation unit 2. It is used for equipment that needs rapid heating. For an innovative design, please ask the examiner Mingjian and give the patent as an early prayer.

Claims (12)

A culvert fluid heater is a culvert fluid heater capable of rapidly performing heat exchange during a fluid flow path, comprising: a square heat exchange unit, which is composed of a heat generating unit, and the upper and lower sides are combined The second heat-dissipating unit is composed of a positive temperature coefficient ceramic resistor piece, and the upper and lower two conductive surfaces are respectively combined with the positive electrode sheet and the negative electrode sheet by surface pressure bonding, and the positive electrode sheet and the negative electrode sheet are exposed to the outer surface. The combined heat-generating unit is encapsulated as watertight, and the external power is externally connected through a positive terminal and a negative terminal, and the two heat-dissipating units are respectively provided with a bottom plate, and the bottom plate is distributed with a plurality of contours on one side. The tropical fin-shaped member and the heat exchange channel, the other side of the bottom plate is a crimping plane, and the crimping plane is combined with one side of the heat generating unit; a heat-insulating heat-insulating shell has a cabin centered on the inner body, The lower two sides are pressing surfaces, and the two sides of the heat-resistant encapsulating shell are respectively provided with a pressure channel groove and a collecting channel groove, and are respectively electrically connected by the combined water inlet and the water outlet, and the cabin body provides heat. The replacement unit is filled and placed, and the upper and lower pressing surfaces press the outward facing end surface of the heat dissipating unit to form a ducted heat exchange channel inside, and arrange the heat exchange channel in and out direction, respectively A pressure channel and a collecting channel; a power source electrically connected to the heat exchange unit. The culvert type fluid heater according to claim 1, wherein the upper and lower sides of the cabin provided by the heat-resistant encapsulating casing are pressing surfaces, and the heat exchange unit is fixed by sandwiching. The fluid heater of the culvert according to claim 1, wherein the upper and lower sides of the cabin provided by the heat-insulating enclosure are pressed surfaces, and between the upper and lower surfaces of the heat exchange unit, The pad is provided with an elastic layer. The fluid heater of the culvert according to claim 1, wherein the heat exchange unit is provided The electrode piece and the negative electrode piece respectively extend outwardly from the positive electrode terminal and the negative electrode terminal, and the positive electrode terminal and the negative electrode terminal are disposed through the two through slots of the connector to be exposed outside the heat-resistant encapsulating case, and the sealing member is sealed. The heat-insulating enclosure encloses a sleeve hole provided in the housing, and the fluid that closes the barrier compartment contacts the positive terminal and the negative terminal. The fluid heater of the culvert according to claim 1, wherein a water film gap is interposed between the end surface of the contour surface of the tropical fin and the inner surface of the cabin, and the height of the water film gap is It is less than the minimum width of the tropical fins. A culvert fluid heater is a culvert fluid heater capable of rapidly performing heat exchange during a fluid flow path, comprising: a square heat exchange unit, which is composed of a heat generating unit, and the upper and lower sides are combined The second heat-dissipating unit is composed of a positive temperature coefficient ceramic resistor piece, and the upper and lower two conductive surfaces are respectively combined with the positive electrode sheet and the negative electrode sheet by surface pressure bonding, and the positive electrode sheet and the negative electrode sheet are exposed to the outer surface. The combined heat-generating unit is encapsulated as watertight, and the external power is externally connected through a positive terminal and a negative terminal, and the two heat-dissipating units are respectively provided with a bottom plate, and the bottom plate is distributed with a plurality of contours on one side. The tropical discharge cylinder and the heat exchange network, the other side of the bottom plate is a crimping plane, and the crimping plane is combined with one side of the heat generating unit; a heat-resistant encapsulating shell, the inner center is provided with a cabin, the cabin body, The lower two sides are pressing surfaces, and the two sides of the heat-resistant encapsulating shell are respectively provided with a pressure channel groove and a collecting channel groove, and are respectively electrically connected by the combined water inlet and the water outlet, and the cabin body provides heat. The replacement unit is filled and placed, and the upper and lower pressing surfaces press the outwardly facing end faces of the heat dissipating unit to form a ducted heat exchange network inside, and arrange the heat exchange network to respectively conduct the pressure in and out of the direction. a channel and a collecting channel; a power source, electrically connected to the heat exchange unit. The fluid heater of the culvert according to claim 6, wherein the tropical discharge cylinder is a prism. The fluid heater of the culvert according to claim 7, wherein the tropical discharge cylinder is a prism, and the prismatic slope formed is a direction facing the inflow of the water inlet. The culvert type fluid heater according to claim 6, wherein the upper and lower sides of the cabin provided by the heat-insulating enclosure are pressing surfaces, and the heat exchange unit is fixed by sandwiching. The culvert type fluid heater according to claim 6, wherein the upper and lower sides of the cabin provided by the heat-resistant encapsulating casing are pressing surfaces, and between the upper and lower surfaces of the heat exchange unit, The pad is provided with an elastic layer. The fluid heater of the culvert according to claim 6, wherein the positive electrode plate and the negative electrode plate of the heat exchange unit respectively extend outwardly with a positive terminal and a negative terminal, and the positive terminal and the negative terminal pass through a The two through slots of the connector are exposed outside the heat-resistant encapsulating shell, the sealing member seals the sleeve hole provided by the heat-insulating encapsulating shell, and the fluid that closes the blocking cabin contacts the positive terminal and the negative terminal. The fluid heater of the culvert according to claim 6, wherein a water film gap is disposed between the end surface of the contour surface of the tropical discharge cylinder and the inner surface of the cabin, and the height of the water film gap is It is less than the minimum width of the tropical discharge cylinder.