Water heating thick film heater

Abstract

The utility model discloses a water heating thick film heater. The water heater comprises a heater shell, a heating thick film plate and a top cover plate arranged at the top of the heater shell and used for covering the heating thick film plate in a sealing mode, a water inlet groove and a water outlet groove are formed in the edge of a fluid cavity of the heater shell, and a water flow surface is formed between the water inlet groove and the water outlet groove. The bottom face of the heating thick film plate is provided with a plurality of protruding turbulent flow columns right facing the water flow surface, and liquid entering the water inlet groove through the water inlet can be disturbed through the turbulent flow columns, then enters the water outlet groove and then is discharged through the water outlet. The thick film heater has the advantages that the whole size can be effectively reduced, the thick film heater is easy to process and low in manufacturing cost, the heat exchange efficiency of the thick film heater and fluid is improved, and the heat exchange effect is fully achieved; the structure design is very simple, the manufacturing cost is very low, the flow resistance is small, heat exchange is fast, the overall size can be reduced, and the requirement for light weight of automobiles is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water heating thick film heater for new energy vehicle, specifically a water heating thick film heater. BACKGROUND

[0002] The thick film water heating heater commonly used in new energy vehicle mainly adopts the "M" type flow channel structure as shown in Figure 1 The thick film water heating heater of the single-way "M" type structure has the flow channel that liquid mainly relies on the surface of specific pipe type to flow, and the appearance of the pipe type structure itself leads to low heat exchange efficiency, long flow channel and large water resistance, and the single flow channel is affected by structure (with large thickness), which leads to the design of thick film plate being too large, and thus the volume of heater assembly is large, therefore, how to manufacture thick film heater at low cost becomes a technical problem to be solved. SUMMARY

[0003] The utility model solves the technical problem to provide a kind of water heating thick film heater with simple structure design, low manufacturing cost, small flow resistance, fast heat exchange and small volume.

[0004] To solve the above technical problem, the water heating thick film heater of the utility model includes a heater shell with a water inlet and a water outlet, a heating thick film plate for covering the top of the flow cavity of the heater shell and a top cover plate for covering the heating thick film plate outside arranged on the top of the heater shell, the edge of the fluid cavity of the heater shell has a water inlet groove communicating with the water inlet and a water outlet groove communicating with the water outlet, and the water inlet groove and the water outlet groove form a water flow surface, the bottom surface of the heating thick film plate is provided with a plurality of protruding turbulence columns opposite to the water flow surface, and the liquid entering the water inlet groove through the water inlet can be disturbed by the turbulence columns and then enter the water outlet groove before being discharged through the water outlet.

[0005] The edge of the heater shell is provided with a ring groove located at the periphery of the fluid cavity, and the ring groove is arranged with a sealing ring pressed between the heater shell and the heating thick film plate.

[0006] The turbulence column is in cylindrical structure, frustum type structure, S type structure or long strip structure.

[0007] The heating thick film plate is provided with a heating layer and a ceramic insulating layer printed thereon.

[0008] The base material of the heating thick film plate is stainless steel, steel or aluminum alloy.

[0009] The turbulence column and the water flow surface have a spacing of 10-30 mm.

[0010] The top surface of the heating thick film plate is provided with a sealing plate for sealing the heating layer and the ceramic insulating layer.

[0011] The water heating thick film heater has the advantages that:

[0012] The water inlet groove and the water outlet groove are arranged at the edge of the fluid cavity of the heater shell, and the water flow surface is formed between the water inlet groove and the water outlet groove, and the plurality of protruding turbulence columns are arranged on the bottom surface of the heating thick film plate and face the water flow surface, so that on one hand, the flow channel is formed by the recesses of the water inlet groove and the water outlet groove, and the whole volume can be effectively reduced, and on the other hand, the turbulence columns are directly machined on the bottom surface of the heating thick film plate, which makes the machining easy and the manufacturing cost low, and the turbulence columns face the water flow surface and are just between the water inlet groove and the water outlet groove to form the 'U' water channel, the fluid can flow around the turbulence columns to form turbulent flow and increase the fluid flow rate, so that the thermal resistance is reduced, the water flows around the heating thick film plate, the heat exchange efficiency of the thick film heater and the fluid is improved, and the heat exchange effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an exploded structural schematic view of the water heating thick film heater of the utility model;

[0014] Figure 2 It is a structural schematic view of the heating thick film plate in the utility model;

[0015] Figure 3 It is a structural schematic view of the heater shell in the utility model. DETAILED DESCRIPTION

[0016] The water heating thick film heater of the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0017] As shown in the drawings, the water heating thick film heater of the utility model comprises a heater shell 3 with a water inlet 1 and a water outlet 2, a heating thick film plate 5 used for covering the top of the flow cavity 4 of the heater shell and a top cover plate 6 used for covering the outside of the heating thick film plate 5 and arranged on the top of the heater shell 3, the top surface of the heating thick film plate 5 is provided with a sealing plate 13 used for sealing the heating layer and the ceramic insulation layer, the heating thick film plate is precisely cast and formed, the base material of the heating thick film plate 5 is a metal material such as stainless steel, steel or aluminum alloy, the heating thick film plate 5 is provided with the heating layer and the ceramic insulation layer printed thereon, the edge of the heater shell 3 is provided with a ring groove 11 located at the periphery of the fluid cavity, the ring groove 11 is arranged with a sealing ring 12 pressed between the heater shell and the heating thick film plate, the left side of the fluid cavity of the heater shell 3 is provided with a water inlet groove 7, the right side of the fluid cavity of the heater shell 3 is provided with a water outlet groove 8, and the water inlet groove 7 and the water outlet groove 8 are arranged at the edge of the fluid cavity of the heater shell and form a water flow surface therebetween. Figure 3The left edge of the fluid cavity of the heater shell 3 has a water outlet groove 8 passing through the water outlet, and the water flow surface 9 is formed between the water inlet groove 7 and the water outlet groove 8. The bottom surface of the heating thick film plate 5 is provided with a plurality of protruding turbulence columns 10 opposite to the water flow surface, wherein the turbulence columns 8 are in cylindrical structure, frustum structure, S-shaped structure or strip structure, etc. The heat dissipation area is increased by more than 50% after the protrusions are added. Since the cross-sectional shape of the water inlet groove 7 and the water outlet groove 8 is a semicircular groove structure, the structure can form two parallel flow channels by the water inlet groove 7 and the water outlet groove 8, meet the flow demand, and the water flow surface 9 formed between the water inlet groove 6 and the water outlet groove 7 serves as the corresponding space of the turbulence columns 10, so that the height of the entire flow space can be reduced. The liquid entering the water inlet groove through the water inlet can be disturbed by the turbulence columns 10 and then enter the water outlet groove and then be discharged through the water outlet.

[0018] Further, the turbulence columns 10 and the water flow surface 9 have a spacing of 10-30 mm, and the turbulence columns 10 are located in the flow cavity 4 after the heating thick film plate 5 and the heater shell are installed, and the distance of the spacing can effectively ensure the turbulence effect.

[0019] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.

Claims

1. A water heating thick film heater comprising a heater housing (3) having a water inlet (1) and a water outlet (2), a heating thick film plate (5) for covering the top of a flow cavity (4) of the heater housing, and a top cover plate (6) disposed on the top of the heater housing (3) for covering the outside of the heating thick film plate (5), characterized in that: The edge of the fluid cavity of the heater shell (3) has a water inlet groove (7) through the water inlet and a water outlet groove (8) through the water outlet, and a water flow surface (9) is formed between the water inlet groove (7) and the water outlet groove (8). The bottom surface of the heating thick film plate (5) is provided with a plurality of protruding turbulence columns (10) opposite to the water flow surface. The liquid entering the water inlet groove through the water inlet can be disturbed by the turbulence columns (10) and then enter the water outlet groove and be discharged through the water outlet.

2. The water heater thick film heater according to claim 1, characterized in that: The edge of the heater shell (3) is provided with a ring groove (11) located at the periphery of the fluid cavity, and the ring groove (11) is arranged with a sealing ring (12) pressed between the heater shell and the heating thick film plate.

3. A water heating thick film heater according to claim 1 or 2, characterised in that: The turbulence column (10) is in a cylindrical structure, a frustum structure, an S-shaped structure or a long strip structure.

4. The water heater thick film heater of claim 3 wherein: The heating thick film plate (5) is provided with a heating layer and a ceramic insulation layer printed thereon.

5. The water heater thick film heater according to claim 1, 2 or 4, wherein: The base material of the heating thick film plate (5) is stainless steel, steel or aluminum alloy.

6. The water heater thick film heater of claim 5 wherein: The turbulence column (10) has a spacing of 10-30mm from the water flow surface (9).

7. The water heater thick film heater according to claim 6, wherein: The top surface of the heating thick film plate (5) is provided with a sealing plate (13) for sealing the heating layer and the ceramic insulation layer.

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