Electric heater

Abstract

The utility model relates to an automobile air conditioner heater, in particular to an electric heater, which comprises a heating box body, the first heating piece is arranged in the heating box body, a plurality of first heating fins are arranged on one side of the first heating piece in an array mode, and the adjacent first heating fins form a first heating groove; the second heating piece is arranged in the heating box body, a plurality of second heating fins are arranged on one side of the second heating piece in an array mode, and the adjacent second heating fins form a second heat dissipation groove; the electric heating layers are respectively arranged on the other sides of the first heating piece and the second heating piece; wherein the first heating fins are inserted into the second heat dissipation grooves, ventilation grooves are reserved between the first heating fins and the second heat dissipation grooves, the second heating fins are inserted into the first heating grooves, and ventilation grooves are reserved between the second heating fins and the first heating grooves. According to the electric heater, a fin heating structure is achieved through the first heating piece and the second heating piece which are inserted together, the good heating effect can be guaranteed, meanwhile, the structure is greatly simplified, welding is not needed, the process steps are reduced, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to an automotive air conditioning heater, and more particularly to an electric heater. Background Technology

[0002] Electric vehicles primarily use electric heaters for heating, such as the electric heater assembly for an electric vehicle air conditioner disclosed in CN205970739U. In this assembly, all connecting pieces 112a and first heating fins 112b in the first heating unit 11 are of equal length and arranged side by side. Each heating tube 111 includes a core tube 111a and a semiconductor ceramic heating core installed within the core tube 111a. Each column of first heat dissipation strips 112 is provided with three parallel connecting pieces 112a. A wavy first heating fin 112b is bonded between two adjacent connecting pieces 112a. The first heating fin 112b and the connecting pieces 112a together form a first heat exchange airflow channel 113. Air passes through the first heat exchange airflow channel 113 and is heated by the first heating fins 112b and the core tube 111a.

[0003] Because the wavy heating fins used in this electric heater are complex to manufacture and require welding to the connecting plates on both sides, the overall process is complex and the cost is high. Utility Model Content

[0004] To address the problems of complex processing, numerous overall steps, and high cost associated with the aforementioned wavy heating fins in electric heating, this utility model provides an electric heater, the specific technical solution of which is as follows:

[0005] An electric heater includes: a heating chamber; a first heating element disposed within the heating chamber, with a plurality of first heating fins arranged in an array on one side, adjacent first heating fins forming a first heating groove; a second heating element disposed within the heating chamber, with a plurality of second heating fins arranged in an array on one side, adjacent second heating fins forming a second heat dissipation groove; and an electric heating layer disposed on the other side of the first heating element and the second heating element, respectively; wherein the first heating fins are inserted into the second heat dissipation groove, and a ventilation groove is left between them, and the second heating fins are inserted into the first heating groove, and a ventilation groove is left between them.

[0006] Preferably, the end of the first heating fin is provided with a first arc surface; the end of the second heating fin is provided with a second arc surface.

[0007] Preferably, the heating chamber includes: a heating base, on which the first heating element and the second heating element are both disposed; heating side plates, on both sides of the heating base; and a heating top plate, on top of the heating side plates and connected to the first heating element and the second heating element.

[0008] Furthermore, the heating base is provided with a lower fixing groove, and the bottoms of the first heating element and the second heating element are inserted into the lower fixing groove; the heating top plate is provided with an upper fixing groove, and the tops of the first heating element and the second heating element are inserted into the upper fixing groove.

[0009] Furthermore, the heating base is provided with a lower insert plate, the heating top plate is provided with an upper insert plate, and both ends of the heating side plate are provided with heating slots, which are inserted into the lower insert plate and the upper insert plate.

[0010] Furthermore, the heating side plate is provided with a side heat dissipation groove, which is disposed opposite to the electric heating layer.

[0011] Furthermore, the side heat dissipation groove is provided with several side reinforcing ribs and side reinforcing bosses.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The electric heater provided by this utility model achieves a finned heating structure by interlocking a first heating element and a second heating element, which can not only ensure a good heating effect, but also greatly simplify the structure, eliminate the need for welding, reduce process steps, and lower costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this application;

[0015] Figure 2 This is a front view of this application;

[0016] Figure 3 This is an exploded view of the first heating element and the second heating element;

[0017] Figure 4 This is a schematic diagram of the structure of the first heating element;

[0018] Figure 5 This is a front view of the first heating element;

[0019] Figure 6 This is a schematic diagram of the heating base;

[0020] Figure 7 This is a front view of the heating base;

[0021] Figure 8 This is a schematic diagram of the structure of the heating top plate;

[0022] Figure 9 This is a front view of the heated top plate;

[0023] Figure 10This is a structural schematic diagram of the heating side plate. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] like Figures 1 to 10 As shown, an electric heater includes a heating box, a first heating element 4, a second heating element 5, and an electric heating layer 6. The heating box is used to install inside an electric vehicle. The first heating element 4 includes a first vertical plate 41 and first heating fins 42. The first heating fins 42 are arranged in an array along the height direction of the first vertical plate 41, and adjacent first heating fins 42 form a first heating groove 45. The second heating element 5 includes a second vertical plate 51 and second heating fins 52. The second heating fins 52 are arranged in an array along the height direction of the second vertical plate 51, and adjacent second heating fins 52 form a second heat dissipation groove 55. The electric heating layer 6 is respectively disposed on the first vertical plate 41 and the second vertical plate 51. Both ends of the first vertical plate 41 and the second vertical plate 51 are installed at both ends inside the heating box. The first heating fins 42 are inserted into the second heat dissipation groove 55, and a ventilation groove is left between them. The second heating fins 52 are inserted into the first heating groove 45, and a ventilation groove is left between them.

[0026] During heating, the electric heating layer 6 generates heat, which is then conducted to the first heating fins 42 and 52 of the first heating element 4 and the second heating element 5. Air passes through the ventilation slots and is heated by the first heating fins 42 and 52. The staggered arrangement of the first heating fins 42 and 52 increases the heat exchange area, effectively ensuring the heating effect.

[0027] The first heating element 4 and the second heating element 5 have the same structure, both being aluminum profiles. They can be processed from the same profile and interlocked together to form a dense heat dissipation fin structure. This eliminates the need for welding heat dissipation fins, reduces process steps, and greatly lowers costs.

[0028] The electric heating layer 6 is directly disposed on the first heating element 4 and the second heating element 5, forming an integral structure, which facilitates installation, reduces the number of parts, and lowers assembly and storage costs. The electric heating layer 6 can be an existing metal resistance layer, which is formed by sintering conductive paste. Alternatively, the electric heating layer 6 can be an electric heating film, an electric heating plate, an electric heating wire, etc.

[0029] The first heating element 4 and the second heating element 5 constitute a heating assembly. Multiple heating assemblies are typically installed on an electric heater. Adjacent heating assemblies are placed against each other; that is, the first vertical plate 41 of the adjacent first heating element 4 and the second vertical plate 51 of the adjacent second heating element 5 are placed together. Between the first vertical plate 41 and the second vertical plate 51 are their respective electric heating layers 6. Because the heating fins can quickly conduct heat away, the phenomenon of high-temperature burnout of the two stacked electric heating layers 6 can be avoided.

[0030] The first heating fin 42 has a first arc surface 43 at its end; the second heating fin 52 has a second arc surface 53 at its end. The arc surface can prevent dust accumulation and is highly safe, preventing scratches to products or operators.

[0031] To facilitate the assembly of the heating chamber, the heating chamber includes a heating base 1, heating side plates 2 and heating top plate 3. The bottoms of the first heating element 4 and the second heating element 5 are both installed on the heating base 1, and the tops are connected to the heating top plate 3. The heating side plates 2 are symmetrically installed on both sides of the heating base 1 and connected to the heating top plate 3. The first heating element 4 and the second heating element 5 are also located between the heating side plates 2 on both sides.

[0032] To facilitate the installation of the first heating element 4 and the second heating element 5, the heating base 1 is provided with a lower fixing groove 11, and the heating top plate 3 is provided with an upper fixing groove 31. The bottoms of the first upright plate 41 of the first heating element 4 and the second upright plate 51 of the second heating element 5 are both inserted into the lower fixing groove 11; the tops of the first upright plate 41 of the first heating element 4 and the second upright plate 51 of the second heating element 5 are both inserted into the upper fixing groove 31. The upper fixing groove 31 and the lower fixing groove 11 greatly facilitate the assembly of the first heating element 4 and the second heating element 5.

[0033] To facilitate the installation of the heating side plate 2, the heating base 1 is provided with a lower insert plate 13, the heating top plate 3 is provided with an upper insert plate 33, and both ends of the heating side plate 2 are provided with heating slots 23, which are inserted into the lower insert plate 13 and the upper insert plate 33.

[0034] To improve heat dissipation between the heating side plate 2 and the first heating element 4 and the second heating element 5, prevent excessive local temperature, and reduce weight, the heating side plate 2 is provided with a side heat dissipation groove 21. The side heat dissipation groove 21 is positioned opposite to the electric heating layer 6, creating a gap between the electric heating layer 6 and the heating side plate 2. This ensures reliable heat dissipation, prevents excessive local temperature of the electric heating layer 6, and protects the electric heating layer 6. The side heat dissipation groove 21 contains several side reinforcing ribs 22 and side reinforcing bosses 24. These ribs and bosses enhance the strength of the heating side plate 2 and abut against the electric heating layer 6, thus securing the first heating element 4 and the second heating element 5 to the side.

[0035] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An electric heater, characterized in that, include: Heating chamber; The first heating element (4) is disposed in the heating box, and a plurality of first heating fins (42) are arranged in an array on one side, and adjacent first heating fins (42) form a first heating groove (45); A second heating element (5) is disposed inside the heating chamber, and a plurality of second heating fins (52) are arranged in an array on one side, with adjacent second heating fins (52) forming a second heat dissipation groove (55); and An electric heating layer (6) is disposed on the other side of the first heating element (4) and the second heating element (5); The first heating fin (42) is inserted into the second heat dissipation groove (55), and a ventilation groove is left between the first heating fin (45) and the second heat dissipation groove (55).

2. An electric heater according to claim 1, characterized in that, The first heating fin (42) has a first arc surface (43) at its end; the second heating fin (52) has a second arc surface (53) at its end.

3. An electric heater according to claim 1, characterized in that, The heating chamber includes: A heating base (1) is provided on which the first heating element (4) and the second heating element (5) are both disposed; Heating side plates (2), the heating side plates (2) are disposed on both sides of the heating base (1); and A heating top plate (3) is disposed on the top of the heating side plate (2) and is connected to the first heating element (4) and the second heating element (5).

4. An electric heater according to claim 3, characterized in that, The heating base (1) is provided with a lower fixing groove (11), and the bottoms of the first heating element (4) and the second heating element (5) are inserted into the lower fixing groove (11); The heating top plate (3) is provided with an upper fixing groove (31), and the tops of the first heating element (4) and the second heating element (5) are inserted into the upper fixing groove (31).

5. An electric heater according to claim 3, characterized in that, The heating base (1) is provided with a lower insert plate (13), the heating top plate (3) is provided with an upper insert plate (33), and both ends of the heating side plate (2) are provided with heating slots (23), which are inserted into the lower insert plate (13) and the upper insert plate (33).

6. An electric heater according to claim 3, characterized in that, The heating side plate (2) is provided with a side heat dissipation groove (21), which is arranged opposite to the electric heating layer (6).

7. An electric heater according to claim 6, characterized in that, The side heat dissipation groove (21) is provided with several side reinforcing ribs (22) and side reinforcing bosses (24).

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