Heating air supply mechanism of air heater

Abstract

The utility model provides an air heater heating air supply mechanism which is characterized in that the air heater heating air supply mechanism comprises a fan, a buffer box, a heating pipe and an air supply pipe, the fan is installed on one side of the buffer box, a buffer cavity is formed in the buffer box, an air outlet of the fan is communicated with the buffer cavity of the buffer box, the heating pipe is installed in the air supply pipe, and the air supply pipe is communicated with the buffer cavity of the buffer box. The air supply pipe is installed on the other side of the buffer box, and an air outlet channel of the heating pipe is communicated with the buffer cavity. By introducing the design of the buffer box, the airflow path is optimized, the problem of uneven airflow distribution is solved, the heating quality and efficiency are improved, meanwhile, the fan is protected, and the stability of the heating efficiency is guaranteed.

Description

Technical Field

[0001] This application relates to the field of industrial hot air blowers, and particularly to a heating and air supply mechanism for a hot air blower. Background Art

[0002] A hot air blower (or simply called a hot air gun, a blower, etc.) is indeed a commonly used tool. Through the cooperation of a blower and a heating tube, hot air is blown out through the air outlet to heat a heat shrinkable tube so that it shrinks and tightly wraps around a wire or a pipe after shrinking.

[0003] In the existing hot air blower system, the cold air generated by the blower is often directly sent into the heating tube or the heating area. This design has the following deficiencies:

[0004] (1) When the cold air directly enters the heating area, due to the influence of factors such as the air flow speed and direction, the air flow distribution in the heating area is uneven, thus affecting the heating effect.

[0005] (2) Structures for increasing the heating area are usually provided in the heating tube or the heating area, but these structures will also increase the flow resistance of the air flow, making the cold air flow speed slower and the heating efficiency lower.

[0006] (3) In the hot air blower system, the air in the heating area will expand during the heating process, resulting in an increase in pressure. Moreover, in order to obtain a better heating effect in the heating area, the flow resistance of the air flow in the heating area will be increased, thus forming a pressure difference between the heating area and the blower. When this pressure difference is large enough, the air flow in the heating area may flow back to the blower, which will not only reduce the heating efficiency but also may damage the blower. Utility Model Content

[0007] The purpose of this application is to provide a heating and air supply mechanism for a hot air blower in which the cold air generated by the blower can better enter the heating tube or the heating area to improve the heating effect and efficiency and prevent the air flow from flowing back and damaging the blower.

[0008] In order to achieve the above purpose, this application provides the following technical solutions:

[0009] A heating and air supply mechanism for a hot air blower includes a blower, a buffer box, a heating tube, and an air supply pipe. The blower is installed on one side of the buffer box. A buffer chamber is provided in the buffer box. The air outlet of the blower is communicated with the buffer chamber of the buffer box. The heating tube is installed in the air supply pipe. The air supply pipe is installed on the other side of the buffer box. The air outlet channel of the heating tube is communicated with the buffer chamber.

[0010] Further, an installation seat is provided on one side of the buffer box. The heating tube and the air supply pipe are both detachably installed on the installation seat of the buffer box.

[0011] Further, a heat insulation washer is also arranged inside the mounting seat.

[0012] Further, a first heat insulation sleeve is arranged between the heating pipe and the air supply pipe, and the first heat insulation sleeve is sleeved on the heating pipe.

[0013] Further, a second heat insulation sleeve is sleeved on the outer periphery of the air supply pipe.

[0014] Further, a third heat insulation sleeve is sleeved on the outer periphery of the air supply pipe, and one end of the third heat insulation sleeve is sleeved on the mounting seat of the buffer box.

[0015] Further, a temperature sensor is arranged in the buffer cavity to detect the temperature in the buffer cavity and prevent its temperature from being too high.

[0016] Further, fins are arranged in the air outlet channel of the heating pipe, and the fins are used to increase the heat exchange area in the air outlet channel.

[0017] Further, at the air outlet of the air supply pipe, a surrounding edge part is arranged around the air outlet, and a plurality of diversion grooves are arranged in an annular array on the surrounding edge part.

[0018] Further, a diversion plate is arranged near the air outlet in the air supply pipe, and the diversion plate can divert the hot air in the air supply pipe.

[0019] The beneficial effects of the present application are as follows:

[0020] (1) By introducing the design of the buffer box in the present application, the cold air generated by the fan first enters the buffer cavity. In the buffer cavity, the air flow is fully buffered and evenly distributed, effectively solving the problem of uneven air flow distribution in the prior art. This makes the heating effect more uniform and improves the heating quality.

[0021] (2) The design of the buffer box in the present application not only optimizes the air flow path, but also reduces the direct impact of the cold air on the heating pipe, thereby reducing the air flow resistance. This enables the cold air to pass through the heating pipe more smoothly, improves the heating efficiency, and reduces the energy loss.

[0022] (3) The buffer box in the present application allows the air flow to gather in it first, so that the air pressure in the buffer box relatively increases. This design enables the air flow in the buffer box to flow into the heating pipe better under the action of a greater air pressure, further improving the heating efficiency.

[0023] (4) The buffer box of the present application serves as a pressure buffer area, which can balance the pressure difference generated by the air expansion in the heating area. This effectively prevents the air flow in the heating pipe from flowing back to the fan under the action of the pressure difference, protects the fan from damage, and at the same time ensures the stability of the heating efficiency. Description of the Drawings

[0024] Figure 1 Schematic perspective view of the heating and air supply mechanism of a hot air blower provided by an embodiment of the present application;

[0025] Figure 2 Top view of the heating and air supply mechanism of a hot air blower provided by an embodiment of the present application;

[0026] Figure 3 is Figure 2 Cross-sectional view taken at A-A;

[0027] Figure 4 Top view of the heating and air supply mechanism of a hot air blower provided by an embodiment of the present application;

[0028] Figure 5 is Figure 4 Cross-sectional view taken at B-B;

[0029] Figure 6 is Figure 4 Cross-sectional view taken at C-C;

[0030] Figure 7 Schematic perspective view of the air supply duct provided by an embodiment of the present application;

[0031] Explanation of reference numerals:

[0032] 31, blower; 32, buffer box; 33, heating tube; 34, air supply duct; 35, mounting seat; 36, heat insulation gasket; 37, first heat insulation sleeve; 38, second heat insulation sleeve; 39, third heat insulation sleeve; 40, temperature sensor;

[0033] 321, buffer cavity;

[0034] 331, fin;

[0035] 341, surrounding edge part; 342, flow guiding groove; 343, flow guiding plate; Detailed implementation manners

[0036] The terms used in the implementation manners part of the present application are only for explaining the specific embodiments of the present application, and are not intended to limit the present application. The implementation manners of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] Such as Figure 1 and Figure 3As shown in the figure, a hot air blower heating and air supply mechanism includes a blower 31, a buffer box 32, a heating tube 33 and an air supply pipe 34. The blower 31 is installed on one side of the buffer box 32. A buffer cavity 321 is provided in the buffer box 32. The air outlet of the blower 31 is communicated with the buffer cavity 321 of the buffer box 32. The heating tube 33 is installed in the air supply pipe 34. The air supply pipe 34 is installed on the other side of the buffer box 32. The air outlet channel of the heating tube 33 is communicated with the buffer cavity 321. The air supply pipe is finally connected to the air outlet head 1.

[0038] After the blower 31 is started, the generated cold air first enters the buffer cavity 321 in the buffer box 32, and the air flow is fully buffered and evenly distributed in the buffer cavity 321. Then, the evenly distributed air flow flows into the air outlet channel of the heating tube 33 through the air supply pipe 34, and the heating tube 33 heats the air flow. The heated hot air flow flows out through the air outlet channel of the heating tube 33 to complete the heating and air supply process. At the same time, the buffer box 32 also plays a role in balancing the pressure difference generated by air expansion in the heating area, preventing the air flow from flowing back to the blower 31, protecting the blower 31 from damage, and ensuring the stability of the heating efficiency.

[0039] In addition, a buffer box 32 is provided, and the wires of the heating tube can be arranged in the buffer cavity 321 of the buffer box 32.

[0040] As Figure 3 shown in the figure, in this embodiment, a mounting seat 35 is provided on one side of the buffer box 32. The heating tube 33 and the air supply pipe 34 are both detachably installed on the mounting seat 35 of the buffer box 32. The heating tube 33 and the air supply pipe 34 are connected to the buffer box 32 through the mounting seat 35, making the assembly process of the entire heating and air supply mechanism of the blower 31 more simple and fast.

[0041] As Figure 3 shown in the figure, in this embodiment, a heat insulation gasket 36 is also provided in the mounting seat 35. To prevent the heat generated by the heating tube 33 during operation from being directly transferred to the buffer box 32. Since the heating tube 33 generates high temperature during operation, without proper heat insulation measures, this heat will be conducted to the buffer box 32 through the mounting seat 35, thereby affecting the air flow temperature and pressure distribution in the buffer box 32, and even having an adverse impact on the structure and performance of the buffer box 32.

[0042] As Figure 5 and Figure 6As shown, in this embodiment, a first heat insulation sleeve 37 is provided between the heating tube 33 and the air supply duct 34. The first heat insulation sleeve 37 is sleeved on the heating tube 33, and the heat insulation sleeve is tightly sleeved on the heating tube 33. The first heat insulation sleeve 37 effectively blocks the heat generated by the heating tube 33 from being directly transferred to the air supply duct 34, preventing unnecessary heat loss. In addition, it reduces the influence of heat on the air supply duct 34 and its surrounding components, and helps to maintain the thermal balance of the entire heating and air supply fan 31 structure.

[0043] The heat insulation sleeve can wrap the heat generated by the heating tube 33, making it act more concentratedly on the air flow, improving the heating efficiency. The heat preservation function enables the air flow to obtain a more stable and efficient heating effect when passing through the heating tube 33, thereby improving the overall heating quality. The heat preservation function enables the air flow to obtain a more stable and efficient heating effect when passing through the heating tube 33, thereby improving the overall heating quality.

[0044] As Figure 5 and Figure 6 As shown, in this embodiment, a second heat insulation sleeve 38 is sleeved on the outer periphery of the air supply duct 34. The second heat insulation sleeve 38 can effectively block the heat exchange between the hot air flow in the air supply duct 34 and the external environment, reduce heat loss, and improve the overall thermal efficiency of the heating and air supply fan 31 structure. The setting of the second heat insulation sleeve 38 can effectively reduce the temperature on the surface of the air supply duct 34, enabling the operator to operate safely and comfortably when replacing or maintaining the heating tube 33, avoiding the risk of getting burned.

[0045] As Figure 5 and Figure 6 As shown, in this embodiment, a third heat insulation sleeve 39 is sleeved on the outer periphery of the air supply duct 34, and one end of the third heat insulation sleeve 39 is sleeved on the mounting seat 35 of the buffer box 32. Since the mounting seat 35 is directly connected to the air supply duct 34 and there is a heating tube 33 inside the air supply duct 34 generating high temperature, the mounting seat 35 is also easily affected by heat. The third heat insulation sleeve 39 covers the mounting seat 35, which can significantly reduce the temperature of the mounting seat 35, reduce the risk of deformation or damage caused by high temperature, and thus extend the service life of the mounting seat 35. By sleeving one end of the third heat insulation sleeve 39 on the mounting seat 35, a continuous heat insulation layer is formed, which further enhances the heat insulation effect between the air supply duct 34 and the buffer box 32.

[0046] As Figure 5 and Figure 6 As shown, in this embodiment, a temperature sensor 40 is provided in the buffer chamber 321 to detect the temperature in the buffer chamber 321 and prevent its temperature from being too high. The temperature sensor 40 can detect the temperature in the buffer chamber 321 in real time and accurately, providing key data for the control system. Through continuous monitoring, temperature anomalies can be detected in a timely manner to prevent potential safety hazards.

[0047] When the air outlet or the air inlet is blocked, the flow of air will be hindered, resulting in a change in the temperature inside the buffer chamber 321. These changes can be detected by the sensor and trigger an alarm or other corresponding measures.

[0048] As Figure 6 shown in the figure, in this embodiment, fins 331 are provided in the air outlet channel of the heating tube 33, and the fins 331 are used to increase the heat exchange area in the air outlet channel. The fins 331, as an extended surface, effectively increase the heat exchange area in the air outlet channel of the heating tube 33. A larger heat exchange area means that more heat can be transferred from the heating tube 33 to the air flow passing through the air outlet channel.

[0049] As Figure 7 shown in the figure, in this embodiment, at the air outlet of the air supply duct 34, a surrounding edge portion 341 is provided around the air outlet, and a plurality of flow guiding grooves 342 are arranged in a circular array on the surrounding edge portion 341. When the air outlet slot of the air outlet head docked with the air supply duct 34 is wide, the spacious air outlet slot is likely to cause uneven air flow distribution. By providing the surrounding edge portion 341 and the flow guiding grooves 342, the air flow can be effectively guided and distributed to diffuse to both sides, so that the air flow flows out more evenly and smoothly from the air outlet holes of the air outlet head.

[0050] As Figure 7 shown in the figure, in this embodiment, a flow guiding plate 343 is provided near the air outlet in the air supply duct 34, and the flow guiding plate 343 can guide the hot air in the air supply duct 34. The flow guiding plate 343 should be arranged near the air outlet so as to perform a final optimization on the air flow that is about to leave the air supply duct 34. Its shape should be customized according to the specific shape of the air supply duct 34 and the air supply requirements to ensure the best air flow guiding effect.

[0051] The flow guiding plate 343 mainly optimizes the air flow direction in the air supply duct 34, while the surrounding edge portion 341 and the flow guiding grooves 342 are responsible for optimizing the air flow distribution at the air outlet. The two work together to ensure that the air flow path from the air supply duct 34 to the air outlet is optimized.

[0052] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0053] The devices or components referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically specified.

[0054] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and the above drawings of the embodiments of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application and are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heating and air supply mechanism of a hot air blower, characterized in that: The invention comprises a fan, a buffer box, a heating pipe and an air supply pipe, wherein the fan is installed on one side of the buffer box, a buffer cavity is arranged in the buffer box, an air outlet of the fan is communicated with the buffer cavity of the buffer box, the heating pipe is installed in the air supply pipe, the air supply pipe is installed on the other side of the buffer box, and an air outlet channel of the heating pipe is communicated with the buffer cavity.

2. A hot air blower heating and air supply mechanism according to claim 1, characterized in that: A mounting seat is provided on one side of the buffer box, and the heating pipe and the air supply pipe can be detachably mounted on the mounting seat of the buffer box.

3. A hot air blower heating and air supply mechanism according to claim 2, characterized in that: A heat insulating gasket is also arranged in the mounting seat.

4. A hot air blower heating and air supply mechanism according to any one of claims 1 to 3, characterized in that: A first thermal insulation sleeve is arranged between the heating pipe and the air supply pipe, and the first thermal insulation sleeve is arranged on the heating pipe.

5. A hot air blower heating and air supply mechanism according to any one of claims 1 to 3, characterized in that: The outer periphery of the air supply pipe is covered with a second heat insulation sleeve.

6. A hot air blower heating and air supply mechanism according to claim 2, characterized in that: A third heat-insulating sleeve is sleeved on the outer periphery of the air supply pipe, and one end of the third heat-insulating sleeve is sleeved on the mounting seat of the buffer box.

7. The heating and air supply mechanism of a hot air blower according to claim 1, characterized in that: A temperature sensor is arranged in the buffer cavity to detect the temperature in the buffer cavity to prevent the temperature from being too high.

8. The hot air blower heating and air supply mechanism according to claim 1, characterized in that: The air outlet channel of the heating pipe is provided with fins, and the fins are used to increase the heat exchange area in the air outlet channel.

9. The hot air blower heating and air supply mechanism according to claim 1, characterized in that: At the air outlet of the air supply pipe, a peripheral edge portion is arranged around the air outlet, and a plurality of guide grooves are arranged in a ring array on the peripheral edge portion.

10. The hot air blower heating and air supply mechanism according to claim 1, characterized in that: A guide plate is arranged in the air supply duct near the air outlet, and the guide plate can guide the hot air in the air supply duct.

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