Integrated PTC heater

Abstract

The utility model relates to PTC heater technical field especially relates to an integrated PTC heater. The integrated PTC heater includes roof and bottom plate, and the heat dissipation pipe between roof and bottom plate is fixedly installed with the cooling fin, and the both sides of cooling fin are provided with the pleat part, the cooling fin is provided with the convection hole, and the baffle is installed on the convection hole. The utility model provides an integrated PTC heater in the pleat part of cooling fin, on one hand, the pleat part can increase the heat dissipation area of cooling fin, strengthens heat conversion efficiency, on the other hand, the pleat part has certain elasticity in structure form, makes the pleat part through the elastic deformation and reduces the impact that cooling fin receives after being pressed, and the convection hole between the cooling fin of many pieces of cooling fin and the baffle constitute the wind body curved flow channel structure, and further prolongs the time of wind body passing through the cooling fin in the PTC heater, effectively improves heat conversion efficiency.

Description

Technical Field

[0001] This utility model relates to the field of PTC heater technology, and in particular to an integrated PTC heater. Background Technology

[0002] PTC (Positive Temperature Coefficient) heaters are widely used in air conditioning, automotive heating, and other fields due to their self-regulating power characteristics. Traditional PTC heaters typically consist of ceramic heating elements, heat sinks, and flat-plate heat sinks, but they suffer from the following problems:

[0003] 1. Low heat dissipation efficiency: Traditional heat sinks have a flat plate structure, limited heat dissipation area, and a single airflow path, resulting in insufficient heat exchange;

[0004] 2. Excessive air resistance: Dense heat sink layout can obstruct airflow and increase energy consumption.

[0005] Therefore, it is necessary to provide a new integrated PTC heater to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an integrated PTC heater.

[0007] The integrated PTC heater provided by this utility model includes a top plate and a bottom plate. Multiple heat dissipation pipes are fixedly mounted between the top plate and the bottom plate, and ceramic heating elements are built into the heat dissipation pipes.

[0008] Multiple heat sinks are fixedly installed on the heat dissipation pipe between the top plate and the bottom plate, and both sides of the heat sinks are provided with integrally formed pleats.

[0009] The heat sink has multiple evenly distributed convection holes, and each convection hole is equipped with a baffle plate. The convection holes and baffle plates of the multiple heat sinks together form a curved flow channel structure.

[0010] Preferably, the flow deflector is provided with a flow deflector A and a flow deflector B, which are respectively fixedly fitted on both sides of the heat sink and correspond to the convection holes.

[0011] Preferably, the A-baffle and the B-baffle are arranged at intervals.

[0012] Preferably, the distance between the baffle and the heat sink is 0.2-0.5 mm.

[0013] Preferably, a side copper tube is fixedly fitted to the end of the pleated portion.

[0014] Preferably, the heat sink has multiple equally spaced fitting cavities, and the heat sink is fixedly fitted onto the heat dissipation pipe through the fitting cavities.

[0015] Preferably, the thickness of the heat sink is between 0.5mm and 0.8mm.

[0016] Compared with related technologies, the integrated PTC heater provided by this utility model has the following beneficial effects:

[0017] The pleats on the heat sink in this invention have two main advantages. First, they increase the heat dissipation area of ​​the heat sink, enhancing heat conversion efficiency and improving overall heat dissipation. Second, the pleats have a certain degree of elasticity, allowing them to reduce the impact on the heat sink when it is compressed through elastic deformation. The side copper tubes not only reduce the sharpness of the edges of the pleats but also further increase the heat dissipation area of ​​the heat sink. The convection holes between multiple heat sinks, combined with the baffles, form a curved flow channel structure for the airflow, which prolongs the time it takes for the airflow to pass through the heat sink inside the PTC heater, further improving heat conversion efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the integrated PTC heater provided by this utility model;

[0019] Figure 2 for Figure 1 One of the schematic diagrams of the heat sink structure shown;

[0020] Figure 3 for Figure 1 The second schematic diagram of the heat sink structure is shown.

[0021] The following are the labels in the diagram: 1. Top plate; 2. Bottom plate; 3. Heat sink; 4. Ceramic heating element; 5. Heat sink; 5a. Fitting cavity; 5b. Convection hole; 51. Folded part; 6. Side copper tube; 7-1. A-baffle; 7-2. B-baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 3 The present invention provides an integrated PTC heater, which includes a top plate 1 and a bottom plate 2.

[0025] In the embodiments of this utility model, please refer to Figures 1 to 3 Multiple heat dissipation pipes 3 are fixedly mounted between the top plate 1 and the bottom plate 2, and ceramic heating elements 4 are built into the heat dissipation pipes 3. Multiple heat dissipation elements 5 are fixedly installed on the heat dissipation pipes 3 between the top plate 1 and the bottom plate 2. Specifically, multiple equally spaced fitting cavities 5a are opened on the heat dissipation elements 5, and the heat dissipation elements 5 are fixedly fitted onto the heat dissipation pipes 3 through the opening fitting cavities 5a.

[0026] Both sides of the heat sink 5 are provided with integrally formed pleated parts 51, and the ends of the pleated parts 51 are fixedly fitted with side copper tubes 6. Multiple evenly distributed convection holes 5b are opened on the heat sink 5, and each convection hole 5b is equipped with a baffle. The convection holes 5b between multiple heat sinks 5 and the baffles form a curved flow channel structure. The baffles include A baffle 7-1 and B baffle 7-2. A baffle 7-1 and B baffle 7-2 are fixedly fitted on both sides of the heat sink 5 and correspond to the convection holes 5b. A baffle 7-1 and B baffle 7-2 are arranged at intervals.

[0027] It should be noted that the pleats 51 provided on the heat sink 5 have two main functions: firstly, they increase the heat dissipation area of ​​the heat sink 5, enhance heat conversion efficiency, and thus improve the overall heat dissipation effect; secondly, the pleats 51 have a certain degree of elasticity in their structure, which allows the heat sink 5 to reduce the impact on the heat sink 5 through elastic deformation after being compressed. The side copper tubes 6 not only reduce the sharpness of the sides of the pleats 51, but also further increase the heat dissipation area of ​​the heat sink 5.

[0028] It should also be noted that the convection holes 5b of the heat sink 5 allow air to pass through, while the A baffle 7-1 and B baffle 7-2 can deflect the airflow. Since the A baffle 7-1 and B baffle 7-2 are fixedly fitted on both sides of the heat sink 5 and spaced apart, the convection holes 5b of the multiple heat sinks 5 in this application, together with the baffles, form a curved airflow channel structure, thereby extending the time for the airflow to pass through the heat sink 5 inside the PTC heater and further improving the heat conversion efficiency.

[0029] In this embodiment, the side copper tube 6 can be hollowed out to enhance airflow.

[0030] Furthermore, the distance between the baffle and the heat sink 5 is 0.2-0.5mm, while the thickness of the heat sink 5 is 0.5mm-0.8mm. By reasonably setting the distance between the baffle and the heat sink 5 and the thickness of the heat sink, the heat dissipation resistance is reduced to the maximum extent while ensuring the optimal heat dissipation area, thus ensuring the heat dissipation effect.

[0031] To avoid the potential metal fatigue of the folded portion 51 due to repeated thermal expansion under long-term high temperature, this application uses a nickel-based high-temperature alloy instead of ordinary copper for the folded portion 51 (or adds reinforcing ribs to the inside of the folded portion).

[0032] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An integrated PTC heater, comprising a top plate (1) and a bottom plate (2), wherein multiple heat dissipation pipes (3) are fixedly mounted between the top plate (1) and the bottom plate (2), and each heat dissipation pipe (3) contains a ceramic heating element (4), characterized in that: Multiple heat sinks (5) are fixedly installed on the heat dissipation pipe (3) between the top plate (1) and the bottom plate (2), and both sides of the heat sink (5) are provided with integrally formed pleated parts (51). The heat sink (5) has a plurality of evenly distributed convection holes (5b), and each of the convection holes (5b) is equipped with a baffle plate. The convection holes (5b) between the multiple heat sinks (5) and the baffle plates form a curved flow channel structure.

2. The integrated PTC heater according to claim 1, characterized in that, The baffle includes a baffle A (7-1) and a baffle B (7-2), which are fixedly fitted on both sides of the heat sink (5) and correspond to the convection holes (5b).

3. The integrated PTC heater according to claim 2, characterized in that, The A-baffle (7-1) and B-baffle (7-2) are arranged at intervals.

4. The integrated PTC heater according to claim 1, characterized in that, The distance between the baffle and the heat sink (5) is 0.2-0.5 mm.

5. The integrated PTC heater according to claim 1, characterized in that, The end of the pleated part (51) is fixedly fitted with a side copper tube (6).

6. The integrated PTC heater according to claim 1, characterized in that, The heat sink (5) has multiple equally spaced fitting cavities (5a) and the heat sink (5) is fixedly fitted onto the heat dissipation pipe (3) through the fitting cavities (5a).

7. The integrated PTC heater according to claim 1, characterized in that, The thickness of the heat sink (5) is 0.5mm-0.8mm.

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