Air heating device and air heater

Abstract

The utility model discloses an air heating device and hot -blast machine, wherein, air heating device includes outer cylinder and heat pipe subassembly, and the outer cylinder is in both ends through arrangement, and heat pipe subassembly includes two mounting plates and a plurality of heating tube, two mounting plates are separately located in both ends of outer cylinder, and a plurality of heating tube is installed between two mounting plates, and every heating tube all is through mounting plate setting to make the through air channel in the heating tube, wherein one mounting plate is equipped with first conductive structure, and first conductive structure is electrically connected with a plurality of heating tube, and another mounting plate is equipped with a plurality of second conductive structures that are independent of each other, and a plurality of heating tube is divided into groups, and every group heating tube is electrically connected with one second conductive structure. The utility model technical scheme can realize equipment flexible scheduling.

Description

Technical Field

[0001] This utility model relates to the field of air heating technology, and in particular to an air heating device and a hot air blower. Background Technology

[0002] Hot air blowers are used in both industrial production and daily life, commonly for heating or drying. Traditional hot air blowers generally use electric heating wires as the heating element. However, with technological advancements, a type of heating element with high energy efficiency and fast heating rate has emerged. Some hot air blowers use this type of heating element to achieve better heating results. Regardless of whether a hot air blower uses traditional electric heating wires or the new heating element, they all employ a monolithic design, resulting in limited flexibility in operation. Utility Model Content

[0003] The main purpose of this invention is to provide an air heating device that aims to improve work flexibility.

[0004] To achieve the above objectives, the air heating device proposed in this utility model includes:

[0005] The outer cylinder, wherein the outer cylinder is through-type at both ends; and

[0006] A heat pipe assembly includes two mounting plates and multiple heating tubes. The two mounting plates are respectively disposed at both ends of the outer cylinder. The multiple heating tubes are installed between the two mounting plates. Each heating tube is disposed through the mounting plate to form a through-ventilation channel inside the heating tube.

[0007] One of the mounting plates is provided with a first conductive structure, which is electrically connected to a plurality of heating tubes. The other mounting plate is provided with a plurality of independent second conductive structures. The plurality of heating tubes are divided into multiple groups, and each group of heating tubes is electrically connected to one of the second conductive structures.

[0008] Optionally, the plurality of heating elements are spaced apart, and the mounting plate is provided with ventilation holes, which are arranged corresponding to the gaps between the heating elements.

[0009] Optionally, a ventilation gap is formed between the mounting plate and the inner wall of the outer cylinder.

[0010] Optionally, one of the mounting plates includes a plurality of relatively independent sub-plates, the plurality of sub-plates being distributed at intervals along the circumference of the outer cylinder, a plurality of heating tubes being provided between each sub-plate and another mounting plate, and each sub-plate being provided with a second conductive structure.

[0011] Optionally, the heat pipe assembly further includes a plurality of first connectors, which are connected to the outer cylinder, and any two adjacent sub-plates are connected to one of the first connectors.

[0012] Optionally, the heat pipe assembly further includes a plurality of second connectors, and any two adjacent subplates are connected by at least one of the second connectors.

[0013] Optionally, the heat pipe assembly further includes a plurality of first connectors, with a plurality of first connectors provided around the periphery of each mounting plate, and the first connectors being connected to the outer cylinder.

[0014] Optionally, the air heating device further includes a plurality of fuses, with each of the second conductive structures having one of the fuses.

[0015] Optionally, the air heating device further includes multiple temperature measuring modules, and at least one temperature measuring module is provided on the outer cylinder corresponding to the position of each group of heating tubes.

[0016] This utility model also proposes a hot air blower, including a blower body and an air heating device as described above. The blower body has an air inlet, an air outlet and an air supply duct connecting the air inlet and the air outlet, and the heating device is disposed in the air supply duct.

[0017] This invention relates to a method of mounting multiple heating elements between two mounting plates. One mounting plate has a first conductive structure electrically connected to the heating elements. The other mounting plate has multiple independent second conductive structures. The heating elements are divided into groups, with each group electrically connected to a corresponding second conductive structure. In use, each second conductive structure can be connected to a control circuit, allowing independent control of the operating state of each group of heating elements. This enables convenient control of some or all heating elements as needed, facilitating flexible equipment scheduling and improving the operational flexibility of the air heating device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the air heating device of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the other side of the air heating device;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the air heating device after the outer cylinder has been removed.

[0022] Explanation of icon numbers:

[0023] 10. Outer cylinder; 11. Ventilation gap; 20. Heat pipe assembly; 21. Mounting plate; 211. Through hole; 212. Ventilation hole; 213. Sub-plate; 214. First conductive structure; 215. Second conductive structure; 22. Heating element; 221. Through ventilation channel; 23. First connector; 24. Second connector; 30. Temperature measuring module.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] This invention proposes an air heating device for use in hot air blowers.

[0029] In the embodiments of this utility model, such as Figures 1 to 3 As shown, the air heating device includes an outer cylinder 10 and a heat pipe assembly 20. The outer cylinder 10 is arranged with both ends through it. The heat pipe assembly 20 includes two mounting plates 21 and multiple heating tubes 22. The two mounting plates 21 are respectively located at both ends of the outer cylinder 10. The multiple heating tubes 22 are installed between the two mounting plates 21. Each heating tube 22 is arranged through the mounting plate 21 so that a through-ventilation channel 221 is formed inside the heating tube 22.

[0030] One of the mounting plates 21 is provided with a first conductive structure 214, which is electrically connected to a plurality of heating tubes 22. The other mounting plate 21 is provided with a plurality of independent second conductive structures 215. The plurality of heating tubes 22 are divided into multiple groups, and each group of heating tubes 22 is electrically connected to a corresponding second conductive structure 215.

[0031] Specifically, the mounting plate 21 has a through hole 211, and the end of the heating element 22 is located in the through hole 211, so that the ventilation channel 221 is connected to the outer space of the mounting plate 21 (i.e., the space on the side of the mounting plate 21 facing away from the other mounting plate 21). The first conductive structure 214 and the second conductive structure 215 can be a circuit board or conductive line, etc., set on the mounting plate 21. Each heating element 22 is fixed to one end of the mounting plate 21 where the first conductive structure 214 is located and is electrically connected to the first conductive structure 214. Each heating element 22 is fixed to one end of the mounting plate 21 where the second conductive structure 215 is located and is electrically connected to the corresponding second conductive structure 215. The first conductive structure 214 and the second conductive structure 215 are used to connect the circuit of the hot air blower so that current can be passed to the heating element 22 to generate heat.

[0032] In the case of the air heating device used in a hot air blower, multiple second conductive structures 215 are connected in parallel to the circuit of the hot air blower, so that the circuit of each second conductive structure 215 can be controlled individually. In use, the circuit of all second conductive structures 215 can be turned on, so that each heating element 22 can be energized and heated, or only one or some of the second conductive structures 215 can be turned on, so that some heating elements 22 are energized and heated, while others are not working, allowing for flexible adjustment of the heating mode. The ventilation duct 221 allows airflow to pass through. When the airflow passes through the ventilation duct 221, it can be heated by the heating elements 22, so that the airflow flowing out of the ventilation duct 221 is hot airflow, thus achieving hot air output.

[0033] This utility model's technical solution involves mounting multiple heating elements 22 between two mounting plates 21. One mounting plate 21 has a first conductive structure 214 electrically connected to the multiple heating elements 22. The other mounting plate 21 has multiple independent second conductive structures 215. The multiple heating elements 22 are divided into multiple groups, with each group of heating elements 22 electrically connected to one second conductive structure 215. In use, each second conductive structure 215 can be connected to a corresponding control circuit, allowing independent control of the operating state of each group of heating elements 22. This facilitates convenient control of some or all of the heating elements 22 according to actual needs, enabling flexible equipment scheduling and improving the operational flexibility of the air heating device.

[0034] In some embodiments, multiple heating elements 22 are spaced apart, and the mounting plate 21 is provided with ventilation holes 212, which are arranged corresponding to the gaps between the heating elements 22. That is, during use, under the action of the hot air blower's fan, some airflow can flow through the through-ventilation channels 221 within the heating elements 22, and some airflow flows into the outer cylinder 10 from the ventilation holes 212 of the inlet mounting plate 21, and then flows out from the ventilation holes 212 of the outlet mounting plate 21 after passing through the gaps between the heating elements 22. Thus, the airflow can also be heated as it passes through the gaps between the heating elements 22. This increases the contact area, improves the airflow heating effect, increases the ventilation volume, and improves efficiency. Optionally, at least some of the ventilation holes 212 on the two mounting plates 21 are arranged facing each other, allowing the airflow to flow directly out, improving the airflow effect.

[0035] In some embodiments, a ventilation gap 11 is formed between the mounting plate 21 and the inner wall of the outer cylinder 10. That is, during use, under the action of the hot air blower's fan, some airflow can flow through the through-ventilation channel 221 within the heating tube 22, while some airflow flows into the outer cylinder 10 from the ventilation gap 11 on the air inlet side, passes over the outer surface of the heating tube 22, and then flows out from the ventilation gap 11 on the air outlet side. Thus, the airflow can also be heated as it passes over the outer surface of the heating tube 22. This increases the contact area, improves the airflow heating effect, increases the ventilation volume, and improves efficiency.

[0036] In some embodiments, one of the mounting plates 21 includes a plurality of relatively independent sub-plates 213, which are distributed circumferentially along the outer cylinder 10. Each sub-plate 213 and another mounting plate 21 are provided with a plurality of heating tubes 22, and each sub-plate 213 is provided with a second conductive structure 215. That is, the heating tubes 22 fixed on the sub-plate 213 are all electrically connected to the second conductive structure 215 on that sub-plate 213, thus facilitating the wiring and installation of the same group of heating tubes 22. Furthermore, ventilation can be utilized through the gaps between adjacent sub-plates 213 to improve the airflow heating effect and ventilation volume. Of course, in other embodiments, the same group of heating tubes 22 can also be arranged in a ring around the circumference of the outer cylinder 10, with multiple groups of heating tubes 22 arranged in concentric rings.

[0037] In some embodiments, the heat pipe assembly 20 further includes a plurality of first connectors 23, with a plurality of first connectors 23 provided around the periphery of each mounting plate 21, and the first connectors 23 being connected to the outer cylinder 10. That is, the mounting plate 21 is fixed to the outer cylinder 10 by the first connectors 23.

[0038] In some embodiments, any two adjacent sub-plates 213 are connected to a first connector 23. That is, two adjacent sub-plates 213 can share a first connector 23. While ensuring the stable installation of the sub-plates 213, the number of first connectors 23 can be reduced, simplifying the structure of the air heating device, reducing production costs, and facilitating assembly. Optionally, the first connector 23 is located on the inner wall of the outer cylinder 10 and is not higher than the end face of the outer cylinder 10. This reduces the risk of interference between the first connector 23 and other components on the hot air blower, and facilitates the installation of the air heating device.

[0039] In some embodiments, the heat pipe assembly 20 further includes a plurality of second connectors 24, and any two adjacent sub-plates 213 are connected by at least one second connector 24, so that the plurality of sub-plates 213 can be connected as one unit, which can ensure the stable installation of the sub-plates 213 and the heating pipe 22.

[0040] In some embodiments, the air heating device further includes multiple fuses, each of the second conductive structures 215 is provided with a fuse, that is, each group of heating tubes 22 is provided with a fuse, so that even if one group of heating tubes 22 is overloaded or short-circuited and the fuse blows, the remaining heating tubes 22 can still work normally.

[0041] In some embodiments, the air heating device further includes multiple temperature measuring modules 30. At least one temperature measuring module 30 is provided on the outer cylinder 10 corresponding to the position of each group of heating tubes 22, so that the temperature of the corresponding area of ​​each group of heating tubes 22 can be monitored independently. The temperature measuring module 30 can be a temperature sensor or a temperature control switch.

[0042] This utility model also proposes a hot air blower, which includes a blower body and an air heating device. The specific structure of the air heating device is as described in the above embodiments. Since this hot air blower adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The blower body has an air inlet, an air outlet, and an air supply duct connecting the air inlet and the air outlet. The heating device is disposed within the air supply duct.

[0043] Specifically, the hot air blower also includes circuit components and a fan. The fan is located in the air supply duct and is used to drive airflow from the air inlet into the air supply duct. The fan and the air heating device (first conductive structure 214 and second conductive structure 215) are both electrically connected to the circuit components.

[0044] Hot air blowers can be used for purposes such as heating or drying.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air heating device, characterized in that, include: The outer cylinder is configured to be continuous at both ends; as well as A heat pipe assembly includes two mounting plates and multiple heating tubes. The two mounting plates are respectively disposed at both ends of the outer cylinder. The multiple heating tubes are installed between the two mounting plates. Each heating tube is disposed through the mounting plate to form a through-ventilation channel inside the heating tube. One of the mounting plates is provided with a first conductive structure, which is electrically connected to a plurality of heating tubes. The other mounting plate is provided with a plurality of independent second conductive structures. The plurality of heating tubes are divided into multiple groups, and each group of heating tubes is electrically connected to one of the second conductive structures.

2. The air heating device as described in claim 1, characterized in that, The heating elements are spaced apart, and the mounting plate is provided with ventilation holes, which are arranged corresponding to the gaps between the heating elements.

3. The air heating device as described in claim 2, characterized in that, A ventilation gap is formed between the mounting plate and the inner wall of the outer cylinder.

4. The air heating device as described in claim 1, characterized in that, One of the mounting plates includes multiple relatively independent sub-plates, which are distributed circumferentially along the outer cylinder. Multiple heating tubes are provided between each sub-plate and another mounting plate, and each sub-plate is provided with a second conductive structure.

5. The air heating device as described in claim 4, characterized in that, The heat pipe assembly also includes a plurality of first connectors, which are connected to the outer cylinder, and any two adjacent sub-plates are connected to one of the first connectors.

6. The air heating device as described in claim 4, characterized in that, The heat pipe assembly also includes a plurality of second connectors, and any two adjacent subplates are connected by at least one of the second connectors.

7. The air heating device as described in claim 1, characterized in that, The heat pipe assembly also includes a plurality of first connectors, and each mounting plate has a plurality of first connectors around its periphery, the first connectors being connected to the outer cylinder.

8. The air heating device as described in claim 1, characterized in that, The air heating device also includes a plurality of fuses, with each of the second conductive structures having one of the fuses.

9. The air heating device as described in claim 1, characterized in that, The air heating device also includes multiple temperature measuring modules, and at least one temperature measuring module is provided on the outer cylinder corresponding to the position of each group of heating tubes.

10. A hot air blower, characterized in that, The device includes a fan body and an air heating device as described in any one of claims 1 to 9, wherein the fan body has an air inlet, an air outlet, and an air supply duct connecting the air inlet and the air outlet, and the heating device is disposed in the air supply duct.

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