Hot air generating mechanism

Abstract

The utility model discloses a hot air generating mechanism which comprises an outer shell, an air inlet, a hot air outlet and a hot air outlet, an overflowing channel is formed in the outer shell, a vertical part and a horizontal part of the overflowing channel are communicated with each other, the vertical part of the outer shell is provided with an air outlet, and the horizontal part of the outer shell is provided with an air inlet; at least part of the heating device is located in the horizontal part of the overflowing channel and extends to the air inlet; a flange is formed on the vertical portion of the overflowing channel, the filtering structure is located on the flange, an abutting rod is connected to the outer shell in a threaded mode, and the end, stretching into the overflowing channel of the outer shell, of the abutting rod makes contact with and abuts against the filtering structure. The hot air supply device can solve the problems that a traditional hot air supply device can only completely heat air flow at the position close to the tail end of the air outlet, and when the flow of the air flow to be heated is increased, a heating structure close to the tail end of the air outlet cannot well heat the air flow evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, and particularly relates to a hot air generating mechanism. Background Art

[0002] In related drying technologies, a hot air supply device usually can be provided with a heating structure in an internal air outlet flow channel, and the heating structure can be used to heat the air flow so that the hot air supply device can supply hot air flow. However, in existing hot air supply devices, the heating structure usually cannot well exchange heat with the air flow at the air inlet. When the volume of the hot air increases, the heating structure cannot well uniformly heat the hot air, affecting the consistency of the hot air temperature provided by the hot air supply device. Content of the Utility Model

[0003] To overcome the above disadvantages, the purpose of the utility model is to provide a hot air generating mechanism.

[0004] To achieve the above purpose, the technical solution adopted by the utility model includes:

[0005] An outer housing, an air flow passage with a vertical part and a horizontal part communicating with each other is formed inside the outer housing, an air outlet is arranged in the vertical part of the outer housing, and an air inlet is arranged in the horizontal part of the outer housing;

[0006] A heating device, at least part of which is located in the horizontal part of the air flow passage and extends to the air inlet.

[0007] In a preferred technical solution of the above hot air generating mechanism, a detachable filtering structure is arranged in the vertical part of the air flow passage.

[0008] In a preferred technical solution of the above hot air generating mechanism, a flange is formed in the vertical part of the air flow passage, the filtering structure is located on the flange, and a contact rod is threadedly connected to the outer housing, and one end of the contact rod extending into the air flow passage of the outer housing contacts and presses tightly against the filtering structure.

[0009] In a preferred technical solution of the above hot air generating mechanism, the filtering structure is filter cotton and / or a filter net.

[0010] In a preferred technical solution of the above hot air generating mechanism, a heat insulation sleeve is installed at one end of the contact rod extending out of the outer housing.

[0011] In a preferred technical solution of the above hot air generating mechanism, the heating device is a heating pipe or a heating wire.

[0012] In a preferred technical solution of the above hot air generating mechanism, a fish scale structure is formed on the surface of the heating device.

[0013] In the preferred technical solution of the above hot air generating mechanism, a heat-resistant hose is externally connected to the air inlet and / or the air outlet.

[0014] In the preferred technical solution of the above hot air generating mechanism, at least two groups of the heating devices are arranged in the horizontal part of the overflow channel of the outer housing.

[0015] The beneficial effect of the present utility model is that by arranging an L-shaped overflow channel in the outer housing and arranging a fish-scale structure heating pipe at the air inlet of the overflow channel, the heating pipe can extend towards the air outlet of the overflow channel to realize comprehensive and stable heating of a large flow of heated air, and ensure the consistency of the temperature of the air discharged from the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the present utility model;

[0017] Figure 2 is a cross-sectional view of the present utility model;

[0018] Figure 3 is a front view of the present utility model;

[0019] In the figure: outer housing 1, overflow channel 10, vertical part 11, horizontal part 12, air outlet 2, air inlet 3, heating device 4, filtering structure 5, abutting rod 6, heat-resistant hose 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0021] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "arranged", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Based on the problem pointed out in the background art that the hot air supply device can only completely heat the air flow at the tail end near the air outlet 2, and when the air flow to be heated increases, the heating structure at the tail end near the air outlet 2 cannot heat the air flow evenly. The utility model provides a hot air generating mechanism, aiming to configure an L-shaped flow passage 10 in the outer housing 1 and configure a heating device 4 at the air inlet 3 of the flow passage 10. The heating device 4 can extend towards the air outlet 2 of the flow passage 10 to achieve comprehensive and stable heating of a large flow of heated air flow and ensure the consistency of the temperature of the air flow discharged through the air outlet 2.

[0024] As Figures 1 to 3 shown, the hot air generating mechanism of the utility model includes: an outer housing 1, an internal flow passage 10 formed inside the outer housing 1 with a vertical part 11 and a horizontal part 12 communicating with each other. An air outlet 2 is arranged on the vertical part 11 of the outer housing 1, and an air inlet 3 is arranged on the horizontal part 12 of the outer housing 1; a heating device 4, at least part of the heating device 4 is located in the horizontal part 12 of the flow passage 10 and extends to the air inlet 3.

[0025] See Figure 1 、 Figure 2 , both the outer housing 1 and the inside of the outer housing 1 are of a square structure. The inside of the outer housing 1 is separated by a partition to form a flow passage 10 with a vertical part 11 and a horizontal part 12, and the flow passage 10 is generally in an "L" shape. See Figure 2 , a heating device 4 is installed in the horizontal part 12 of the flow passage 10. One end of the heating device 4 extends to the air inlet 3, and the other end extends into the vertical part 11 of the flow passage 10, so that when the air flow enters the horizontal part 12 of the flow passage 10 through the air inlet 3, it can be heated by the heating device 4 as much as possible, increasing the time for heat exchange between the air flow and the heating device 4 and ensuring the continuity of hot air generation in this application.

[0026] It should be noted that a blowing device can be configured at the air inlet 3 of the outer housing 1, or an air extraction device can be configured at the air outlet 2 of the outer housing 1, so that the external air flow can enter the flow passage 10 through the air inlet 3 of the outer housing 1 and be discharged through the air outlet 2 opened on the vertical part 11 of the flow passage 10 of the outer housing 1.

[0027] In one or more embodiments, at least two groups of heating devices 4 are arranged in the horizontal part 12 of the flow passage 10 of the outer housing 1. See Figure 1, six groups of heating devices 4 are arranged in the horizontal part 12 of the flow-through channel 10 along the width direction of the outer housing 1. The six groups of heating devices 4 are equidistantly arranged in the horizontal part 12 of the flow-through channel 10, so that the air flow blown into the flow-through channel 10 of the outer housing 1 through the air inlet 3 will first enter between the respective heating devices 4, so as to be quickly heated by the heating devices 4.

[0028] In one or more embodiments, six groups are configured at the air outlet 2 and one group is configured at the air inlet 3. The size of the air inlet 3 is larger than the caliber of the air outlet 2 to ensure the volume of the air flow introduced into the outer housing 1. In addition, the air outlet 2 is configured as independent multiple groups, so that each group of air outlets 2 can communicate with different devices, realizing the supply of hot air to multiple devices and improving the application range of the present application.

[0029] In a specific embodiment, the heating device 4 has a U-shaped structure. The heating device 4 with the U-shaped structure has a larger heating area to further expand the contact range between the air flow in the flow-through channel 10 and it, ensuring the heating effect of the air flow in the flow-through channel 10 and having practicability.

[0030] In one or more embodiments, a detachable filtering structure 5 is arranged in the vertical part 11 of the flow-through channel 10; the filtering structure 5 is filter cotton and / or a filter mesh.

[0031] See Figure 1 , Figure 2 , the filtering structure 5 is detachably arranged in the vertical part 11 of the flow-through channel 10, so that while the filtering structure 5 filters the air flow passing through the flow-through channel 10, the disassembly, cleaning and replacement of the filtering structure 5 can be realized, ensuring the filtering effect of the filtering structure 5 on the hot air flow. When the filtering structure 5 is a filter surface, high-temperature resistant and fireproof materials need to be used; the filtering structure 5 can be set in multiple layers.

[0032] In one or more embodiments, a flange is formed on the vertical part 11 of the flow-through channel 10. The filtering structure 5 is located on the flange. A contact rod 6 is threadedly connected to the outer housing 1. One end of the contact rod 6 extending into the flow-through channel 10 of the outer housing 1 contacts and presses tightly against the filtering structure 5.

[0033] See Figure 1 , Figure 2 , the flange is installed in the vertical part 11 of the flow-through channel 10 in the outer housing 1, and the flange extends towards the vertical part 11 of the flow-through channel 10, so as to facilitate the placement of the filtering structure 5 on the flange; the contact rod 6 is vertically threadedly installed at the top of the outer housing 1. The contact rod 6 has opposite first and second ends. By screwing the contact rod 6, the filtering structure 5 can be pressed against the flange through the first end of the contact rod 6, realizing the installation stability of the filtering structure 5, reducing the abnormal noise generated when the air flow passes through the filtering structure 5, and improving the use effect of the present application.

[0034] In one or more embodiments, a heat insulation sleeve is installed at one end of the abutting rod 6 that extends out of the outer housing 1. It should be noted that the heat insulation sleeve can be a rubber sleeve; through this setting, it is possible to avoid the problem that the staff accidentally touches the end of the abutting rod 6 that extends out of the outer housing 1 and gets scalded after the abutting rod 6 is heated by the hot air flow, thereby improving the safety of using this application.

[0035] In one or more embodiments, the heating device 4 is a heating pipe or a heating wire; a fish scale structure is formed on the surface of the heating device 4.

[0036] See Figure 1 、 Figure 2 , the heating device 4 is a heating pipe, the heating pipe has a U-shaped structure, and a fish scale-shaped flanging is formed on the surface of the heating pipe. Through this setting, the temperature of the heating pipe can be maximally dissipated into the flow-through channel 10, so as to facilitate heat exchange with the cold air flow, improve the heat exchange efficiency between the cold air flow and the heating pipe, and then improve the guarantee of the hot air supply amount of this application.

[0037] In one or more embodiments, a heat-resistant hose 7 is externally connected to the air inlet 3 and / or the air outlet 2.

[0038] The above embodiments are only for explaining the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A hot air generating mechanism, characterized in that: include: An outer shell, wherein a flow passage having a vertical portion and a horizontal portion communicating with each other is formed inside the outer shell, an air outlet is disposed on the vertical portion of the outer shell, and an air inlet is disposed on the horizontal portion of the outer shell; A heating device, wherein the heating device is at least partially located in the horizontal portion of the flow passage and extends to the air inlet.

2. The hot air generating mechanism according to claim 1, characterized in that: The vertical portion of the flow passage is provided with a detachable filtering structure.

3. The hot air generating mechanism according to claim 2, characterized in that: The vertical portion of the flow passage is formed with a flange, the filter structure is located on the flange, and the outer shell is threadedly connected with an abutment rod, which contacts and abuts the filter structure at one end extending into the flow passage of the outer shell.

4. The hot air generating mechanism according to claim 2, characterized in that: The filtering structure is filter cotton and / or filter net.

5. The hot air generating mechanism according to claim 3, characterized in that: The abutment rod is provided with a heat insulation sleeve at one end extending out of the outer shell.

6. The hot air generating mechanism according to claim 1, characterized in that: The heating device is a heating tube or a heating wire.

7. The hot air generating mechanism according to claim 1 or 6, characterized in that: A fish scale structure is formed on the surface of the heating device.

8. The hot air generating mechanism according to claim 1, characterized in that: The air inlet and / or the air outlet is externally connected with a heat-resistant hose.

9. The hot air generating mechanism according to claim 1, characterized in that: At least two groups of the heating devices are arranged in the horizontal part of the flow passage of the outer shell.

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