Die-casting aluminum PTC heater

Abstract

The invention discloses a die-casting aluminum PTC heater, which comprises a heating piece, an upper shell and a lower shell, and is characterized in that the heating piece is arranged between the upper shell and the lower shell; the upper shell body and / or the lower shell body are / is made of aluminum profiles, the end, away from the lower shell body, of the upper shell body is provided with upper cooling fins, and the end, away from the upper shell body, of the lower shell body is provided with lower cooling fins. A plurality of groups of the upper heat dissipation fins and a plurality of groups of the lower heat dissipation fins are arranged, an upper flow guide channel is formed between any two adjacent groups of the upper heat dissipation fins, and a lower flow guide channel is formed between any two adjacent groups of the lower heat dissipation fins. The upper radiating fins and the lower radiating fins of the aluminum profile are thicker, so that the aluminum profile is higher in specific heat capacity, good in temperature consistency, safer and good in explosion-proof performance; and meanwhile, a machining mold can be changed according to actual conditions, so that the lengths and the densities of the upper heat dissipation fins and the lower heat dissipation fins are changed, and the airflow direction is adjusted.

Description

Technical Field

[0001] This invention relates to the field of heater technology, and more particularly to a die-cast aluminum PTC heater. Background Technology

[0002] Existing electric heaters include a housing and corrugated heat-conducting fins disposed within the housing. To ensure the installation and placement of the heat-conducting fins, the housing is generally made into a regular shape. This is exemplified by the PTC heater disclosed in patent application CN 220503498U.

[0003] Existing heaters with corrugated heat-conducting fins have relatively weak explosion-proof performance, and the assembly and processing time of the heating fins is relatively long. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a die-cast aluminum PTC heater.

[0005] The present invention proposes a die-cast aluminum PTC heater, which includes a heating element and, unlike the prior art, also includes an upper shell and a lower shell, with a sealed cavity formed between the upper shell and the lower shell, and the heating element located within the sealed cavity;

[0006] The upper housing and / or the lower housing are made of aluminum profiles. The upper housing has an upper heat dissipation fin at the end away from the lower housing, and the lower housing has a lower heat dissipation fin at the end away from the upper housing.

[0007] Both the upper and lower heat dissipation fins are provided in multiple sets, with an upper flow channel formed between any two adjacent sets of upper heat dissipation fins and a lower flow channel formed between any two adjacent sets of lower heat dissipation fins.

[0008] In this invention, the upper heat dissipation fins and upper shell can be integrally formed by die casting, as can the lower shell and lower heat dissipation fins. Heating is achieved through a heating element, and the surrounding medium is simultaneously heated through the upper shell, upper heat dissipation fins, lower shell, and lower heat dissipation fins. The upper and lower heat dissipation fins of the aluminum profile are relatively thick, have a high specific heat capacity, good temperature consistency, and are safer with good explosion-proof performance. Furthermore, the processing mold can be modified according to actual conditions to change the length and density of the upper and lower heat dissipation fins, thereby adjusting the airflow direction.

[0009] As a further optimization of the present invention, the upper guide channel and the lower guide channel are directly opposite each other.

[0010] As a further optimization of the present invention, the lower heat dissipation fin has a portion extending out of the lower shell and forming an outer flow guide, the upper heat dissipation fin has an upper flow guide, and the height of the upper flow guide gradually increases from the side close to the outer flow guide to the side away from the outer flow guide, thereby realizing that the medium in the upper flow guide channel flows to the lower flow guide channel between the outer flow guides for secondary heating.

[0011] As a further optimization of the present invention, the upper surface of the outer guide portion and the upper surface of the upper guide portion are on an inclined plane.

[0012] As a further optimization of the present invention, the side of the upper housing near the outer guide portion and the side of the lower housing near the outer guide portion are inclined surfaces, and the inclined surfaces are on the same inclined plane as the upper surface of the outer guide portion.

[0013] To further enhance the uniformity of heating, as a further optimization of the present invention, the upper housing is provided with a first handle, the first handle having a first heat-conducting hole perpendicular to the upper heat dissipation fins; and / or, the lower housing is provided with a second handle, the second handle having a second heat-conducting hole perpendicular to the lower heat dissipation fins.

[0014] As a further optimization of the present invention, the upper heat dissipation fins, the upper shell, the lower shell, and the lower heat dissipation fins form a streamlined structure.

[0015] As a further optimization of the present invention, the lower heat dissipation fins include a connected lower guide portion and a lower equal height portion, and the height of the lower guide portion gradually decreases from the side closer to the lower equal height portion to the side farther away from the lower equal height portion;

[0016] The upper heat dissipation fins include an upper airflow guide and an upper equal height section connected together. The height of the upper airflow guide gradually decreases from the side closer to the upper equal height section to the side farther away from the upper equal height section.

[0017] This increases the heating efficiency of the heater. In addition, to further increase the heating efficiency while maintaining overall stability, the upper guide section and the upper equal height section are both provided with upper reinforcing sections.

[0018] And / or, both the lower guide section and the lower equal height section are provided with a lower reinforcing section.

[0019] The die-cast aluminum PTC heater proposed in this invention heats the surrounding medium through an upper shell, upper heat dissipation fins, a lower shell, and lower heat dissipation fins. The upper and lower heat dissipation fins of the aluminum profile are relatively thick, have a high specific heat capacity, good temperature consistency, and are safer with good explosion-proof performance. At the same time, the airflow direction can be adjusted by changing the length and density of the upper and lower heat dissipation fins according to the actual situation by changing the processing mold. The heater is assembled by placing the heating element between the upper and lower shells and then fixing the upper and lower shells with screws or bolts, which is convenient for the assembly of the heater and has high processing efficiency.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a cross-sectional view of the present invention after the handle has been removed;

[0024] Figure 4 This is a schematic diagram of the lower shell structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the upper shell structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the handle structure of the present invention;

[0027] In the diagram: 1. Heating element; 2. Upper shell; 20. Upper mounting groove; 3. Lower shell; 30. Lower mounting groove; 31. Sealing ring groove; 4. Upper heat dissipation fins; 40. Upper airflow guide; 41. Upper leveling section; 5. Lower heat dissipation fins; 50. Outer airflow guide; 51. Lower leveling section; 52. Lower airflow guide; 6. Upper limit plate; 7. Lower limit plate; 8. Handle; 80. Ventilation structure; 81. Wiring hole; 82. Ventilation slot. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figure 1The diagram shows a die-cast aluminum PTC heater, comprising a heating element 1. Similar to existing technologies, the heating element 1 includes a heating core, with electrode strips surrounding the heating core. An insulating film is adhered to the outside of the electrode strips via an adhesive layer. Unlike existing technologies, it also includes an upper housing 2 and a lower housing 3, forming a sealed cavity between the upper housing 2 and the lower housing 3. The heating element 1 is located within this sealed cavity. Figure 4 Specifically, the lower housing 3 has a lower mounting groove 30 on the side opposite to the upper housing 2, and the heating element 1 is installed in the lower mounting groove 30. The upper housing 2 has an upper mounting groove 20 on the side opposite to the lower housing 3. When the upper housing 2 is installed on the lower housing 3, the end faces of the upper housing 2 and the lower housing 3 are in contact, and the upper surface of the heating element 1 is in contact with the bottom surface of the upper mounting groove 20. The upper housing 2 and the lower housing 3 can be fixed by fixing pins, screws and other fixing parts. It should be noted that the lower housing 3 has a sealing ring groove 31. The sealing ring groove 31 is located on the outer periphery of the mounting groove 30. The sealing ring groove 31 contains sealant to ensure the sealing between the upper housing 2 and the lower housing 3.

[0030] The upper shell 2 and the lower shell 3 are made of aluminum profiles. The upper shell 2 has an upper heat dissipation fin at the end away from the lower shell 3, and the lower shell 3 has a lower heat dissipation fin 5 at the end away from the upper shell 2. The upper heat dissipation fin 4 and the lower heat dissipation fin 5 are also made of aluminum profiles. The thickness of the upper heat dissipation fin 4 and the lower heat dissipation fin 5 is 2-8mm. In this embodiment, the thickness of the upper heat dissipation fin 4 and the lower heat dissipation fin 5 is 3mm.

[0031] Both the upper heat dissipation fins 4 and the lower heat dissipation fins 5 are provided in multiple sets. Preferably, the multiple sets of upper heat dissipation fins 4 and lower heat dissipation fins 5 are arranged in parallel, and the upper heat dissipation fins 4 and the lower heat dissipation fins 5 are directly opposite each other. An upper flow channel is formed between any two adjacent sets of upper heat dissipation fins 4, and a lower flow channel is formed between any two adjacent sets of lower heat dissipation fins 5.

[0032] In this invention, the upper heat dissipation fins 4 and the upper shell 2 can be integrally formed, and the lower shell 3 and the lower heat dissipation fins 5 can be integrally formed. Heating is achieved through the heating element 1, and the surrounding medium is heated simultaneously through the upper shell 2, the upper heat dissipation fins 4, the lower shell 3, and the lower heat dissipation fins 5. The upper heat dissipation fins 4 and the lower heat dissipation fins 5 of the aluminum profile are relatively thick, have a high specific heat capacity, good temperature consistency, and are safer with good explosion-proof performance. At the same time, the length and density of the upper heat dissipation fins 4 and the lower heat dissipation fins 5 can be changed by modifying the processing mold according to the actual situation, thereby adjusting the airflow direction. Furthermore, the PCT heater can be assembled by fixing the upper shell 2 and the lower shell 3 with screws or bolts, increasing processing efficiency.

[0033] Preferably, the upper guide channel and the lower guide channel are directly opposite each other;

[0034] The lower heat dissipation fin 5 has a portion extending out of the lower shell 3 and forming an outer flow guide 50. The upper heat dissipation fin 4 has an upper flow guide 40. The height of the upper flow guide 40 gradually increases from the side closer to the outer flow guide 50 to the side farther away from the outer flow guide 50. The medium discharged from the upper flow guide channel can be reheated by the guidance of the upper flow guide 40 and the outer flow guide 50, thereby ensuring heating efficiency.

[0035] Preferably, the upper heat dissipation fins 4, the upper shell 2, the lower shell 3, and the lower heat dissipation fins 5 form a streamlined structure, specifically:

[0036] The lower heat dissipation fin 5 includes a lower flow guide 52 and a lower equal height section 51 connected together. The height of the lower flow guide 52 gradually decreases from the side closer to the lower equal height section 51 to the side farther away from the lower equal height section 51. The lower equal height section 51 is located between the lower flow guide 52 and the outer flow guide 50, and the height of the outer flow guide 50 gradually decreases from the side closer to the lower equal height section 51 to the side farther away from the lower equal height section 51; this further ensures heat conduction efficiency and heat conduction uniformity.

[0037] The upper heat dissipation fin 4 includes an upper flow guide 40 and an upper equal height 41 connected together. The height of the upper flow guide 40 gradually decreases from the side closer to the upper equal height 41 to the side farther away from the upper equal height 41. The upper flow guide 40 is directly opposite to the lower equal height 51, and the lower flow guide 52 is directly opposite to the upper equal height 41. That is, the flow guide directions of the upper heat dissipation fin 4 and the lower heat dissipation fin 5 are opposite; thereby increasing the overall heating efficiency and heating uniformity.

[0038] Preferably, the upper surface of the outer guide portion 50 and the upper surface of the upper guide portion 40 are on an inclined plane.

[0039] Preferably, the side of the upper housing 2 near the outer guide portion 50 and the side of the lower housing 3 near the outer guide portion 50 are inclined surfaces, and the inclined surfaces are on the same inclined plane as the upper surface of the outer guide portion 50.

[0040] like Figure 1 , Figure 6 As shown: A handle 8 is installed on the upper housing 2. Specifically, the handle is long and narrow and is installed on one side of the upper housing 2 by screws or other locking devices. The handle 8 is made of plastic material, which makes it convenient for the user to pick up the heater.

[0041] like Figure 6 As shown, a ventilation groove 82 is opened on the side of the handle 1 opposite to the upper housing 2 and the lower housing 3. The handle 8 is provided with a breathable structure 80 that communicates with the ventilation groove 82 to ensure the heat insulation effect.

[0042] like Figure 1 , Figure 6 As shown, the handle 8 has a wiring hole 81 for routing the connecting wires of the heating element 1.

[0043] like Figure 1 , Figure 6 As shown, the handle 8 has an upper limit plate 6 and a lower limit plate 7. A snap-fit ​​groove is formed between the upper limit plate 6, the lower limit plate 7 and the handle 8. The upper limit plate 6 abuts against the upper surface of the upper housing 2, and the lower limit plate 7 abuts against the lower surface of the lower housing 3, thereby achieving the fastening of the handle 8 to the upper housing 2 and the lower housing 3. At the same time, it supports the lower housing 3 during movement, ensuring the overall stability.

[0044] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A die-cast aluminum PTC heater, comprising a heating element (1), characterized in that, It also includes an upper housing (2) and a lower housing (3), a sealed cavity is formed between the upper housing (2) and the lower housing (3), and the heating element (1) is located in the sealed cavity; The upper housing (2) and / or the lower housing (3) are made of aluminum profiles. The upper housing (2) has an upper heat dissipation fin (4) at the end away from the lower housing (3), and the lower housing (3) has a lower heat dissipation fin (5) at the end away from the upper housing (2). The upper heat dissipation fins (4) and the lower heat dissipation fins (5) are provided with multiple sets. An upper flow channel is formed between any two adjacent sets of the upper heat dissipation fins (4), and a lower flow channel is formed between any two adjacent sets of the lower heat dissipation fins (5).

2. The die-cast aluminum PTC heater according to claim 1, characterized in that, The upper guide channel and the lower guide channel are directly opposite each other; The lower heat dissipation fin (5) has a portion extending out of the lower housing (3) and forms an outer flow guide (50). The upper heat dissipation fin (4) has an upper flow guide (40). The height of the upper flow guide (40) gradually increases from the side close to the outer flow guide (50) to the side away from the outer flow guide (50), thereby realizing that the medium in the upper flow guide channel flows to the lower flow guide channel between the outer flow guide (50) for secondary heating.

3. The die-cast aluminum PTC heater according to claim 2, characterized in that, The upper surface of the outer guide portion (50) and the upper surface of the upper guide portion (40) are on an inclined plane.

4. The die-cast aluminum PTC heater according to claim 2, characterized in that, The side of the upper housing (2) near the outer guide portion (50) and the side of the lower housing (3) near the outer guide portion (50) are inclined surfaces, and the inclined surfaces are on the same inclined plane as the upper surface of the outer guide portion (50).

5. The die-cast aluminum PTC heater according to claim 1, characterized in that, The upper housing (2) and / or the lower housing (3) are provided with handles (8).

6. The die-cast aluminum PTC heater according to claim 5, characterized in that, The handle (1) has a ventilation groove (82) on the side opposite to the upper housing (2) and the lower housing (3), and the handle (8) has a breathable structure (80) that communicates with the ventilation groove (82).

7. The die-cast aluminum PTC heater according to claim 5, characterized in that, The handle (8) has a wiring hole (81) for connecting the heating element (1) to the wiring.

8. The die-cast aluminum PTC heater according to claim 5, characterized in that, The handle (8) has an upper limit plate (6) and a lower limit plate (7). A snap-fit ​​groove is formed between the upper limit plate (6), the lower limit plate (7) and the handle (8). The upper limit plate (6) abuts against the upper surface of the upper housing (2), and the lower limit plate (7) abuts against the lower surface of the lower housing (3).

9. The die-cast aluminum PTC heater according to any one of claims 1-8, characterized in that, The upper heat dissipation fins (4), the upper shell (2), the lower shell (3), and the lower heat dissipation fins (5) form a streamlined structure.

10. The die-cast aluminum PTC heater according to claim 9, characterized in that, The lower heat dissipation fin (5) includes a connected lower guide section (52) and a lower equal height section (51), and the height of the lower guide section (52) gradually decreases from the side closer to the lower equal height section (51) to the side farther away from the lower equal height section (51). The upper heat dissipation fin (4) includes an upper guide section (40) and an upper equal height section (41) connected together. The height of the upper guide section (40) gradually decreases from the side closer to the upper equal height section (41) to the side farther away from the upper equal height section (41).

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