Heat dissipation structure of PTC (Positive Temperature Coefficient) aluminum tube heater

Abstract

The utility model provides a heat radiation structure of a PTC aluminum tube heater, comprising a flat tube, two sides of the flat tube are respectively provided with heat radiation fins, the interior of the flat tube is provided with a heating core, each heat radiation fin comprises two groups of heat radiation folded plates, and a structure stabilizing member is arranged between the two groups of heat radiation folded plates. According to the heat exchanger, the flow direction of fluid is changed through the multiple heat dissipation left inclined pieces and the multiple heat dissipation right inclined pieces, an inclined air channel is formed, turbulent flow is formed when the fluid passes through the heat dissipation pieces through the inclined air channel, the flow speed is slowed down, the contact time of the fluid and the heat dissipation pieces is prolonged, and therefore the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a heat dissipation structure of a PTC aluminum tube heater. Background Art

[0002] PTC electric heater is a device used to provide heat. It can be used in household air conditioners and new energy vehicle air conditioners for heat dissipation. In order to improve the heat dissipation efficiency, it is necessary to use a fin heat dissipation structure to assist in heat dissipation. However, traditional heaters have the following disadvantages:

[0003] First, the heater adopts a sheet-like fin heat dissipation structure, which has a general heat dissipation effect. In addition, the sheet-like fin heat dissipation structure often uses a shoveling process directly on the surface of the flat tube to shovel out the sheet-like fins. The manufacturing cost is high, and the heat dissipation component as a whole uses more materials and is heavier.

[0004] Second, the flat tubes in traditional heaters have poor strength and are easily bent during processing, or easily deformed irregularly when subjected to pressure, affecting the quality of the heater.

[0005] Third, the existing heat dissipation fins and air ducts are neatly arranged, the contact between the fluid and the heat dissipation body is insufficient, and the heat exchange efficiency is low. Utility Model Content

[0006] In view of the above problems, the present invention provides a heat dissipation structure of a PTC aluminum tube heater, which aims to solve the technical problems of reducing material consumption, lowering manufacturing costs, improving the structural strength of the aluminum tube, and enhancing heat dissipation efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a heat dissipation structure of a PTC aluminum tube heater, comprising a flat tube, heat dissipation fins are respectively provided on both sides of the flat tube, a heating core is provided inside the flat tube, the heat dissipation fins include two groups of heat dissipation folding plates, and a structural stabilizer is provided between the two groups of heat dissipation folding plates.

[0008] Furthermore, the two groups of heat dissipation folding plates have exactly the same shape and structure, and are arranged in opposite directions.

[0009] Furthermore, the heat dissipation folding plate includes a plurality of metal folding strips arranged in parallel, the width of the plurality of metal folding strips is 2S, and the plurality of metal folding strips are partially overlapped, with an overlap spacing of S.

[0010] Furthermore, the angles between all the folds of the metal folding strip and the long sides of the metal folding strip are 45°.

[0011] Furthermore, the plurality of metal folding strips each include a plurality of heat dissipation contact plates, and the plurality of heat dissipation contact plates are each arranged on one side of the flat tube, and one end of the plurality of heat dissipation contact plates is respectively arranged at the lower end of the left-leaning heat dissipation plate, and the upper ends of the plurality of left-leaning heat dissipation plates are respectively arranged on one side of the triangular top plate, and the other side of the plurality of triangular top plates is respectively arranged at the upper end of the right-leaning heat dissipation plate, and the lower ends of the plurality of right-leaning heat dissipation plates are respectively arranged at the other end of the plurality of heat dissipation contact plates.

[0012] Furthermore, the lower ends of the plurality of the left-inclined heat dissipation pieces in two adjacent metal folding strips are aligned, and the height spacing between the plurality of the triangular top pieces in two adjacent metal folding strips is S.

[0013] Furthermore, the plurality of right-inclined heat dissipation plates in the two groups of heat dissipation folding plates are arranged in a staggered and interlaced manner.

[0014] Furthermore, the structural stabilizer includes a stabilizing strip, the two ends of which are respectively arranged on one side of the flat tube, and a plurality of top sheet stabilizing blocks are provided in the middle of the stabilizing strip, and the plurality of top sheet stabilizing blocks are respectively arranged on one side of the plurality of triangular top sheets.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The fluid flow direction is changed by multiple left-inclined heat sinks and multiple right-inclined heat sinks to form an inclined air duct. The inclined air duct allows the fluid to form turbulence when passing through the heat sink, slowing down the flow rate and prolonging the contact time between the fluid and the heat sink, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 It is a front view schematic diagram of the utility model;

[0019] Figure 3 It is a left side schematic diagram of the utility model;

[0020] Figure 4 It is a top view schematic diagram of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure splitting of the utility model;

[0022] Figure 6 This is a schematic diagram of the disassembly of the heat sink structure of the utility model;

[0023] Figure 7 This is a schematic diagram of the split plan view of the heat sink structure of the utility model;

[0024] Figure 8It is a side elevation schematic diagram of the heat dissipation folding plate structure of the present invention.

[0025] In the figure: 1. Flat tube; 2. Heat sink; 21. Heat sink folding plate; 211. Metal folding strip; 2111. Heat sink contact plate; 2112. Heat sink left-leaning plate; 2113. Triangular top plate; 2114. Heat sink right-leaning plate; 22. Structural stabilizer; 221. Stabilizing strip; 222. Top plate stabilizing block; 3. Heating core. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the utility model embodiments in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the utility model embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of utility model protection.

[0027] For details, please refer to the examples Figure 1-5 A heat dissipation structure of a PTC aluminum tube heater includes a flat tube 1, with heat sinks 2 provided on both sides of the flat tube 1, a heating core 3 provided inside the flat tube 1, and the heat sink 2 including two sets of heat dissipation folds 21. A structural stabilizer 22 is provided between the two sets of heat dissipation folds 21. The two sets of heat dissipation folds 21 have exactly the same shape and structure and are arranged in opposite directions. This design forms multiple left and right vertical air ducts through the bent shape of the heat sink, and the bent shape also extends the area of ​​the heat dissipation folds 21.

[0028] For details, please refer to the examples Figure 6-8The heat dissipation folding plate 21 includes a plurality of parallel metal folding strips 211, the width of the plurality of metal folding strips 211 is 2S, the plurality of metal folding strips 211 are partially overlapped, the overlap spacing is S, and the angles between all folds of the metal folding strips 211 and the long sides of the metal folding strips 211 are 45°. The plurality of metal folding strips 211 each include a plurality of heat dissipation contact sheets 2111, and the plurality of heat dissipation contact sheets 2111 are each arranged on one side of the flat tube 1, and one end of the plurality of heat dissipation contact sheets 2111 is respectively arranged at the lower end of the left-leaning heat dissipation sheet 2112, and the upper ends of the plurality of left-leaning heat dissipation sheets 2112 are respectively arranged on one side of the triangular top sheet 2113, and the other side of the plurality of triangular top sheets 2113 is respectively arranged at the upper end of the right-leaning heat dissipation sheet 2114, and the plurality of right-leaning heat dissipation sheets The lower ends of 2114 are respectively arranged at the other ends of the multiple heat dissipation contact plates 2111, and the lower ends of the multiple heat dissipation left-leaning plates 2112 in the two adjacent metal folding strips 211 are aligned. The height spacing of the multiple triangular top plates 2113 in the two adjacent metal folding strips 211 is S, and the multiple heat dissipation right-leaning plates 2114 in the two groups of heat dissipation folding plates 21 are staggered and interspersed. This design changes the flow direction of the fluid through the multiple heat dissipation left-leaning plates 2112 and the multiple heat dissipation right-leaning plates 2114 to form an inclined air duct. The inclined air duct allows the fluid to form turbulence when passing through the heat sink, slows down the flow rate, and prolongs the contact time between the fluid and the heat sink; the multiple heat dissipation right-leaning plates 2114 arranged in an interlaced and interspersed manner make the movement trajectory of the fluid more complicated, further prolonging the contact time between the fluid and the heat sink.

[0029] For details, please refer to the examples Figure 6-7 The structural stabilizer 22 includes a stabilizing strip 221, the two ends of which are respectively arranged on one side of the flat tube 1, and a plurality of top sheet stabilizing blocks 222 are provided in the middle of the stabilizing strip 221. The plurality of top sheet stabilizing blocks 222 are respectively arranged on one side of the plurality of triangular top sheets 2113. This design connects a plurality of triangular top sheets 2113 of different heights through the top sheet stabilizing blocks 222 to strengthen the structural strength of the metal folding strip 211.

[0030] Operating principle: First, when the fluid passes through the heat sink 2, the fluid flow direction is changed by multiple left-inclined heat sink fins 2112 and multiple right-inclined heat sink fins 2114 to form an inclined air duct. The inclined air duct allows the fluid to form turbulence when passing through the heat sink, slowing down the flow rate and prolonging the contact time between the fluid and the heat sink; the multiple staggered right-inclined heat sink fins 2114 make the fluid's movement trajectory more complicated, further prolonging the contact time between the fluid and the heat sink, thereby greatly improving the heat exchange efficiency.

[0031] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure of a PTC aluminum tube heater, comprising a flat tube (1), heat dissipation fins (2) being provided on both sides of the flat tube (1), and a heating core (3) being provided inside the flat tube (1), characterized in that: The heat sink (2) comprises two groups of heat dissipation folding plates (21), and a structural stabilizing member (22) is provided between the two groups of heat dissipation folding plates (21).

2. The heat dissipation structure of a PTC aluminum tube heater according to claim 1, characterized in that: The two groups of heat dissipation folding plates (21) have exactly the same shape and structure, and are arranged in opposite directions.

3. The heat dissipation structure of a PTC aluminum tube heater according to claim 1, characterized in that: The heat dissipation folding plate (21) comprises a plurality of parallel metal folding strips (211), the width of the plurality of metal folding strips (211) is 2S, and the plurality of metal folding strips (211) are partially overlapped, with an overlap spacing of S.

4. The heat dissipation structure of a PTC aluminum tube heater according to claim 3, characterized in that: The included angles between all folds of the metal folding strip (211) and the long sides of the metal folding strip (211) are 45°.

5. The heat dissipation structure of a PTC aluminum tube heater according to claim 3, characterized in that: The plurality of metal folding strips (211) each include a plurality of heat dissipation contact sheets (2111), and the plurality of heat dissipation contact sheets (2111) are each arranged on one side of the flat tube (1), one end of the plurality of heat dissipation contact sheets (2111) is respectively arranged at the lower end of the left-leaning heat dissipation sheet (2112), the upper ends of the plurality of left-leaning heat dissipation sheets (2112) are respectively arranged at one side of the triangular top sheet (2113), the other sides of the plurality of triangular top sheets (2113) are respectively arranged at the upper end of the right-leaning heat dissipation sheet (2114), and the lower ends of the plurality of right-leaning heat dissipation sheets (2114) are respectively arranged at the other end of the plurality of heat dissipation contact sheets (2111).

6. The heat dissipation structure of a PTC aluminum tube heater according to claim 5, characterized in that: The lower ends of the plurality of the heat dissipating left-leaning sheets (2112) in two adjacent metal folding strips (211) are aligned, and the height spacing of the plurality of the triangular top sheets (2113) in two adjacent metal folding strips (211) is S.

7. The heat dissipation structure of a PTC aluminum tube heater according to claim 5, characterized in that: The plurality of heat dissipation right-leaning plates (2114) in the two groups of heat dissipation folding plates (21) are arranged in a staggered and interlaced manner.

8. The heat dissipation structure of a PTC aluminum tube heater according to claim 7, characterized in that: The structural stabilizing member (22) comprises a stabilizing strip (221), the two ends of which are respectively arranged on one side of the flat tube (1), a plurality of top sheet stabilizing blocks (222) are provided in the middle of the stabilizing strip (221), and the plurality of top sheet stabilizing blocks (222) are respectively arranged on one side of the plurality of triangular top sheets (2113).

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