Single-air-duct hot air assembly

Abstract

The single-air-duct hot air assembly is integrally of a tubular structure and comprises an air inlet end and an air outlet end, a multi-pipe nested sleeve is fixedly sealed between the air inlet end and the air outlet end, and the sleeve comprises a heating pipe, a quartz outer lining pipe tightly attached to the heating pipe, a middle quartz pipe and an outer wall quartz pipe from inside to outside; the heating tube and quartz outer liner tube assembly, the middle quartz tube and the outer wall quartz tube form a triple roundabout nesting, so that inlet air flows through an outer-layer air duct between the outer wall quartz tube and the middle quartz tube firstly, reaches an air outlet end and then turns round to flow through a middle-layer air duct between the middle quartz tube and the heating tube and quartz outer liner tube assembly; and the air flows through the inner core air duct of the heating tube after entering the air inlet end. According to the hot air assembly, the air channels through which air flows are not in contact with metal materials, and blown hot air is not in contact with metal ions. The equipment has the characteristics of accurate temperature control, high-temperature dry burning protection, good sealing performance, high energy efficiency, high heating rate, no contact of a hot air flow channel with metal ions and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to a hot air machine, more particularly, to a hot air machine without metal ion contact in air flow channel and heating module. BACKGROUND

[0002] In special production equipment, the air needs to be heated to blow and dry the processed parts. The hot air heating is similar to a fan, but in the air channel, various materials are used for electric heating, and the most common one is electric heating wire. The materials used in the common hot air machine are not limited, and various materials such as metal and plastic are mostly used. Such a hot air machine cannot meet the heating equipment requirements of not contacting metal ion components for special use. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provides a single air channel hot air assembly.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0005] A single air channel hot air assembly, the whole is a tubular structure, comprising an air inlet end and an air outlet end, the air inlet and the air outlet are tightly sealed with a multi-tube nested sleeve, the sleeve comprises a heating tube, a quartz outer lining tube, an intermediate quartz tube and an outer wall quartz tube from inside to outside; wherein the heating tube is tightly combined with the quartz outer lining tube; the heating tube and the quartz outer lining tube combination, the intermediate quartz tube and the outer wall quartz tube form a triple winding nested structure, so that the air inlet first flows through the outer layer air channel between the outer wall quartz tube and the intermediate quartz tube, and after 180° turning at the air outlet end, it flows through the middle layer air channel between the intermediate quartz tube and the heating tube and the quartz outer lining tube combination, and after 180° turning again at the air inlet end, it flows through the inner core air channel of the heating tube, and finally it is discharged from the air outlet end.

[0006] Further, the air inlet end and the air outlet end respectively comprise an air inlet piece and an air outlet piece, a plurality of fixing blocks for guiding air and fixing the heating tube, the quartz outer lining tube, the intermediate quartz tube and the outer wall quartz tube, and a plurality of sealing rings and sealing pads for component sealing; the air inlet end and the air outlet end are pulled tight by a screw rod mechanism through the outer fixing blocks.

[0007] Further, the air inlet piece is provided with an air pressure switch, and the air outlet piece is provided with a temperature sensor.

[0008] Further, the heating tube is an outer coated quartz tube.

[0009] Further, the sealing ring and the sealing pad are high-temperature-resistant fluorine rubber sealing rings and pads.

[0010] Further, the fixed block, the air inlet piece and the air outlet piece are high-temperature-resistant plastic fixed blocks, air inlet pieces and air outlet pieces.

[0011] Further, the outer-coated quartz tube is a nano superlattice electric heating film quartz glass tube.

[0012] Working principle: the outer-coated quartz tube and the other three quartz tubes are fixed by the fixed block to form a circuitous S-shaped air duct, so that the air does not contact metal ions when passing through the air duct and is gradually heated until hot air is blown out from the air outlet. The outer-coated quartz tube adopts a single nano superlattice electric heating film quartz glass tube, and copper electrode connecting wires are connected at both ends of the quartz tube to supply power to the electric heating film. The entire air duct is sealed, and the hot air does not contact metal materials, so the hot air at the air outlet does not carry metal ions. The air inlet piece is provided with an air pressure switch for controlling heating, and when the air volume reaches a certain amount, the air pressure switch is opened to make the heating tube start working, and when the air outlet is blocked or closed, the air pressure switch is turned off. The air outlet piece is provided with a temperature sensor to collect temperature data of the air outlet, and a high-performance chip and an electric control program of a controller are used to control to determine the working or protection mode to meet the use requirements, and the program will stop heating when the temperature of the electric heating film reaches the set temperature to prevent damage to the components.

[0013] The hot air assembly of the present application has the advantages that the air flowing through the air duct does not contact metal materials, and the blown hot air does not contact metal ions. The device has the characteristics of precise temperature control, high-temperature dry burning protection, good sealing, high energy efficiency, fast heating rate, and hot air duct not contacting metal ions. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is an external structure schematic diagram of an embodiment;

[0015] Fig. 2 is a cross-sectional view of an embodiment;

[0016] Fig. 3 is a left view of an embodiment;

[0017] Fig. 4 is a parts exploded view of an embodiment;

[0018] The labels in the diagram are as follows: 1-Air pressure switch, 2-Air inlet component, 3-Screw, 4-Screw rod, 5-Nut, 6-Fixing block one, 7-Fixing block two, 8-Fixing block three, 9-Fixing block four, 10-Fixing block five, 11-Fixing block six, 12-Sealing ring one, 13-Sealing ring two, 14-Sealing ring three, 15-Sealing ring four, 16-Sealing ring five, 17-Sealing gasket, 18-Sealing ring six, 19-Sealing ring seven, 20-Outer air duct, 21-Middle air duct, 22-Inner core air duct, 23-Outer wall quartz tube, 24-Intermediate quartz tube, 25-Quartz outer liner tube, 26-Outer coated quartz tube, 27-Fixing block seven, 28-Fixing block eight, 29-Air outlet component, 30-Temperature sensor, 31-Cable outlet. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to embodiments, such as... Figs. 1 to 4 As shown, a single-duct hot air assembly is generally tubular, including an air inlet and an air outlet. A multi-tube nested sleeve is fixed between the air inlet and outlet. From the inside out, the sleeve includes a heating element 26, a quartz outer liner tube 25, an intermediate quartz tube 24, and an outer quartz tube 23. The heating element 26 is tightly fitted to the quartz outer liner tube 25. The assembly of the heating element 26 and the quartz outer liner tube 25, along with the intermediate quartz tube 24, forms a single-duct hot air assembly. The quartz tube 24 and the outer wall quartz tube 23 form a triple-layered, meandering nest, so that the air inlet first flows through the outer layer air duct 20 between the outer wall quartz tube 23 and the middle quartz tube 24, then turns 180° at the air outlet end and flows through the middle layer air duct 21 between the middle quartz tube 24 and the assembly of the heating tube 26 and the quartz outer liner tube 25, then turns 180° again at the air inlet end and flows through the inner core air duct 22 of the heating tube 26, and finally exits from the air outlet end. The air inlet and air outlet ends respectively include an air inlet component 2 and an air outlet component 29, as well as multiple fixing blocks 6, 7, 8, 9, 10, 11, 27, and 28 for guiding air and fixing the heating element 26, the outer quartz liner tube 25, the intermediate quartz tube 24, and the outer quartz tube 23, and multiple sealing rings 12, 13, 14, 15, 16, 18, and 19 and sealing gaskets 17 for sealing the components; the air inlet and air outlet ends are tightened by a screw mechanism through the outer fixing blocks 6 and 28. The air inlet component 2 is equipped with a wind pressure switch 1, and the air outlet component 29 is equipped with a temperature sensor 30. The heating element 26 is an outer coated quartz tube 26, which is a nano-superlattice electrothermal film quartz glass tube 26. The sealing rings 2, 13, 14, 15, 16, 18, 19 and the sealing gasket 17 are made of high-temperature resistant fluororubber; the fixing blocks 6, 7, 8, 9, 10, 11, 27, 28, the air inlet component 2 and the air outlet component 29 are made of high-temperature resistant plastic.

[0020] The above merely describes the technical solutions of the present application, and any simple modification or equivalent replacement of the technical solutions of the present application made by those skilled in the art shall not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A single plenum hot air assembly, characterized by: The single air duct hot air assembly is a tubular structure as a whole, comprising an air inlet end head and an air outlet end head, and a sleeve pipe with multiple pipe nests is fixed between the air inlet end head and the air outlet end head, the sleeve pipe comprises, from inside to outside, a heating pipe, a quartz outer lining pipe, an intermediate quartz pipe and an outer wall quartz pipe; the heating pipe is tightly combined with the quartz outer lining pipe; the combination of the heating pipe and the quartz outer lining pipe, the intermediate quartz pipe and the outer wall quartz pipe form a triple winding nest, so that the air inlet first flows through the outer layer air duct between the outer wall quartz pipe and the intermediate quartz pipe, after 180° turning at the air outlet end head, flows through the middle layer air duct between the intermediate quartz pipe and the combination of the heating pipe and the quartz outer lining pipe, after 180° turning again at the air inlet end head, flows through the inner core air duct of the heating pipe, and finally air is discharged from the air outlet end head.

2. The plenum hot air assembly of claim 1, wherein: The air inlet end head and the air outlet end head respectively comprise an air inlet piece and an air outlet piece, a plurality of fixing blocks for guiding air and fixing the heating pipe, the quartz outer lining pipe, the intermediate quartz pipe and the outer wall quartz pipe, and a plurality of sealing rings and sealing pads for sealing the components; the air inlet end head and the air outlet end head are pulled tight by a screw rod mechanism through the fixing blocks on the outer side.

3. The plenum hot air assembly of claim 2, wherein: An air pressure switch is arranged on the air inlet piece, and a temperature sensor is arranged on the air outlet piece.

4. The plenum heater assembly of claim 3, wherein: The heating pipe is an outer coated film quartz pipe.

5. The plenum heater assembly of claim 3, wherein: The sealing rings and the sealing pads are high-temperature-resistant fluorine rubber sealing rings and sealing pads.

6. The plenum heater assembly of claim 3, wherein: The fixing blocks, the air inlet piece and the air outlet piece are high-temperature-resistant plastic fixing blocks, air inlet pieces and air outlet pieces.

7. The plenum heater assembly of claim 4, wherein: The outer coated film quartz pipe is a nano superlattice electric heating film quartz glass pipe.

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