Air duct heater

Abstract

The utility model discloses an air duct heater which comprises an aluminum sheet, a PI heating sheet, a wire assembly, a fuse and an electronic temperature collector. The aluminum sheet is provided with a plurality of sections of bends for increasing the contact area with air; the PI heating sheet is attached to the aluminum sheet and used for heating air; the wire assembly is connected with the PI heating sheet and the electronic temperature collector. The electronic temperature collector is arranged on the aluminum sheet and is used for temperature control adjustment; and the fuse is arranged on the PI heating sheet and is used for overheating protection. According to the utility model, the PI heating sheet is pasted on the aluminum sheet, and then multi-section bending is carried out, so that the contact area with the air is increased, and the air can be rapidly heated; meanwhile, the safety is further enhanced and the temperature control function is added by adding the fuse and the thermistor, and the desired air temperature can be freely adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to an air duct heater. Background Art

[0002] Duct heaters are mainly used to heat the air in the duct. When we need hot air, we can send the air to the duct heater through the air supply system to heat it, and then we can get safe and reliable high-temperature gas. Duct heaters are widely used in various industries. However, although traditional duct heaters can provide the necessary heat, they have some limitations and shortcomings:

[0003] 1. Size and installation: Traditional duct heaters are usually bulky and have complicated installation processes, making them unsuitable for small equipment or space-constrained applications.

[0004] 2. Temperature regulation: Many existing heaters lack fine temperature regulation functions and cannot flexibly control the air temperature according to actual needs.

[0005] 3. Thermal efficiency: Some heater designs are not optimized, resulting in low thermal efficiency and energy waste.

[0006] 4. Safety: The overheat protection mechanism may not be sensitive or reliable enough, increasing safety risks. Utility Model Content

[0007] In view of the problems existing in the prior art, the utility model provides an air duct heater.

[0008] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0009] The utility model provides an air duct heater, comprising: an aluminum sheet, a PI heating sheet, a wire assembly, a fuse, and an electronic temperature collector;

[0010] The aluminum sheet is provided with multiple bends to increase the contact area with the air;

[0011] The PI heating sheet is attached to the aluminum sheet to heat the air;

[0012] The wire assembly is connected to the PI heating sheet and the electronic temperature collector respectively;

[0013] The electronic temperature collector is arranged on the aluminum sheet for temperature control and adjustment;

[0014] The fuse is arranged on the PI heating sheet for overheat protection.

[0015] Preferably, the wire assembly includes an NTC wire, a heating film wire, a heat shrink tubing sleeved on the NTC wire and the heating film wire, and a plastic shell terminal placed at the ends of the NTC wire and the heating film wire.

[0016] Preferably, the plastic shell terminal is provided with 4 pin ports with buckles for connecting with corresponding NTC wires and heating film wires.

[0017] Preferably, the NTC wire includes a white NTC wire and a green NTC wire, and the heating film wire includes a red heating film wire and a black heating film wire.

[0018] Preferably, the white NTC wire and the green NTC wire are both connected to the electronic temperature collector; the red heating film wire and the black heating film wire are both connected to the PI heating sheet.

[0019] Preferably, the electronic temperature collector is arranged at the bending portion of the aluminum sheet; the electronic temperature collector comprises a thermistor, and the thermistor is connected to a white NTC wire and a green NTC wire.

[0020] Preferably, the multiple bends of the aluminum sheet are equidistantly arranged with an interval of 5 mm.

[0021] Preferably, the fuse is arranged at the side end of the PI heating sheet and is opposite to the heating film wire.

[0022] The technical solution of the utility model has the following beneficial effects:

[0023] The utility model attaches a PI heating sheet to a small aluminum sheet and then bends it in multiple sections, thereby increasing the contact area with the air and being able to quickly heat the air; at the same time, adding a fuse and a thermistor further enhances safety and increases the temperature control function, and the desired air temperature can also be freely adjusted.

[0024] The utility model adopts multi-section bent aluminum sheets, which not only reduces the volume of the heater, but also improves the thermal efficiency by increasing the contact area. The efficient heat conversion capability of the PI heating sheet, combined with the thermal conductivity characteristics of the aluminum sheet, realizes rapid air heating.

[0025] The integrated electronic temperature collector and NTC wire of the utility model provide accurate temperature monitoring and regulation capabilities.

[0026] The utility model fuse provides overheat protection and ensures the safety of the equipment and the surrounding environment.

[0027] The design of the wire assembly of the utility model includes NTC and heating film wires coded in different colors, and plastic shell terminals, which improves the flexibility of connection and the customizability of the device.

[0028] The bends on the aluminum sheet of the utility model are arranged at equal intervals of 5 mm, which optimizes the uniformity of air flow and heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the installation of the wire assembly of the utility model;

[0031] Figure 3 This is a schematic diagram of the installation of the electronic temperature collector of the utility model;

[0032] Figure 4 This is a schematic diagram of the installation of the fuse of the utility model. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] Reference Figures 1 to 4 The utility model provides an air duct heater, comprising: an aluminum sheet 1, a PI heating sheet 2, a wire assembly 3, a fuse 4, and an electronic temperature collector 5;

[0039] The aluminum sheet 1 is provided with multiple bends to increase the contact area with the air, improve the heat exchange efficiency, and also serve as a structural support;

[0040] The PI heating sheet 2 is attached to the aluminum sheet 1 to heat the air;

[0041] The wire assembly 3 is connected to the PI heating sheet 2 and the electronic temperature collector 5 respectively;

[0042] The electronic temperature collector 5 is arranged on the aluminum sheet 1 for temperature control and adjustment;

[0043] The fuse 4 is arranged on the PI heating sheet 2 for overheat protection. The fuse 4 is a blown fuse, model A2-3A-F, with a rated operating temperature of 115°C and an actual operating temperature of 112±2°C.

[0044] Furthermore, the wire assembly 3 includes an NTC wire 301, a heating film wire 302, a heat shrink tube 303 sleeved on the NTC wire 301 and the heating film wire 302, and a plastic shell terminal 304 placed at the end of the NTC wire 301 and the heating film wire 302. The plastic shell terminal 304 is provided with 4 pin ports with buckles, which are used to connect with the corresponding NTC wire 301 and the heating film wire 302 to ensure the stability and reliability of the wire connection. The model of the plastic shell terminal 304 is GH1.5-4P. The NTC wire 301 includes a white NTC wire 301a and a green NTC wire 301b, and the heating film wire 302 includes a red heating film wire 302a and a black heating film wire 302b. The white NTC wire 301a and the green NTC wire 301b are both connected to the electronic temperature collector 5 for cooperating with the electronic temperature collector 5 for temperature monitoring and control. The red heating film conductor 302 a and the black heating film conductor 302 b are both connected to the PI heating sheet 2 and are responsible for transmitting electrical energy to the heating sheet 2 .

[0045] The electronic temperature collector 5 is arranged at the bending part of the aluminum sheet 1; the electronic temperature collector 5 includes a thermistor, which is connected to the white NTC wire and the green NTC wire. The thermistor is used to monitor the temperature to achieve temperature control.

[0046] Furthermore, the multiple bends of the aluminum sheet 1 are evenly spaced at 5 mm intervals. This even spacing helps to ensure uniform airflow distribution inside the heater, thereby achieving a more consistent heating effect. The 5 mm interval ensures optimal heat exchange efficiency and air flow in a limited space.

[0047] Furthermore, the fuse 4 is arranged at the side end of the PI heating sheet 2 and opposite to the heating film wire 302. The fuse 4 is arranged at the side end of the PI heating sheet 2. This layout allows the fuse 4 to respond quickly and cut off the circuit when overheating is detected to prevent further thermal damage or potential fire risks. The main function of the fuse 4 is to cut off the current by melting when the circuit is overloaded or short-circuited, thereby protecting other components in the circuit, especially the heating element PI heating sheet 2, to avoid damage or safety accidents due to overheating.

[0048] Working principle of this utility model:

[0049] A PI heating sheet 2 is attached to the small aluminum sheet 1, and then it is bent into multiple sections to increase the contact area with the air, which can quickly heat the air. At the same time, a fuse 4 and a thermistor of an electronic temperature collector 5 are added to further enhance safety and increase the temperature control function, and the desired air temperature can also be freely adjusted.

[0050] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A duct heater, characterized in that: include: Aluminum sheet, PI heating sheet, wire assembly, fuse, electronic temperature collector; The aluminum sheet is provided with multiple bends to increase the contact area with the air; The PI heating sheet is attached to the aluminum sheet to heat the air; The wire assembly is connected to the PI heating sheet and the electronic temperature collector respectively; The electronic temperature collector is arranged on the aluminum sheet for temperature control and adjustment; The fuse is arranged on the PI heating sheet for overheat protection.

2. The air duct heater according to claim 1, characterized in that: The wire assembly comprises an NTC wire, a heating film wire, a heat shrink tubing sleeved on the NTC wire and the heating film wire, and a plastic shell terminal placed at the ends of the NTC wire and the heating film wire.

3. The air duct heater according to claim 2, characterized in that: The plastic shell terminal is provided with 4 pin ports with buckles for connecting with corresponding NTC wires and heating film wires.

4. The air duct heater according to claim 3, characterized in that: The NTC wires include a white NTC wire and a green NTC wire, and the heating film wires include a red heating film wire and a black heating film wire.

5. The air duct heater according to claim 4, characterized in that: The white NTC wire and the green NTC wire are both connected to the electronic temperature collector; the red heating film wire and the black heating film wire are both connected to the PI heating sheet.

6. The air duct heater according to claim 5, characterized in that: The electronic temperature collector is arranged at the bending part of the aluminum sheet; the electronic temperature collector comprises a thermistor, and the thermistor is connected with a white NTC wire and a green NTC wire.

7. The air duct heater according to claim 6, characterized in that: The multiple bends of the aluminum sheet are evenly spaced and are 5 mm apart.

8. The air duct heater according to claim 5, characterized in that: The fuse is arranged at the side end of the PI heating sheet and is opposite to the heating film wire.

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