Energy-saving circulating airflow heating device

Abstract

The invention discloses an energy-saving circulating airflow heating device which is characterized by comprising a heating copper core, a vertically-through heating cavity is formed in the heating copper core, an air nozzle is arranged on an upper end cover of the heating copper core, and a circle of air openings which are obliquely arranged and guide hot air to form vortex are formed in the circumferential wall of the air nozzle. An inner air return cover and an outer air return cover are arranged outside the heating copper core in a matched mode, a first cavity is formed between the inner air return cover and the heating copper core, the first cavity is communicated with the lower end of the heating cavity, a second cavity is formed between the outer air return cover and the inner air return cover, an air inlet is formed in the upper end of the second cavity, and the air inlet corresponds to an air opening of the air nozzle and the outside. The inner air return cover is provided with an air blowing structure, the air outlet side of the air blowing structure communicates with the first cavity, and the air inlet side of the air blowing structure communicates with the second cavity. According to the heating device, hot air accurate control and hot air secondary recycling are achieved, and the durability of the heating device is enhanced.

Description

Technical Field

[0001] This invention relates to improvements in the field of paper container forming, and more particularly to an improved invention of an energy-saving circulating airflow heating device. Background Technology

[0002] Traditional heating wires used to heat the bottom of a cup can easily lead to uneven heat distribution and localized overheating. In addition, the heating wires lose a lot of heat during operation and cannot be effectively recovered and reused, resulting in energy waste. Furthermore, they cause the working environment to heat up, affecting operational safety and equipment stability. At the same time, the heating wires are prone to aging, burning out, or oxidation, requiring frequent replacement and increasing maintenance costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an energy-saving circulating airflow heating device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This energy-saving circulating airflow heating device is characterized in that: it includes a heating copper core, a heating cavity that runs vertically through the heating copper core, and a nozzle is provided on the upper end of the heating copper core. A ring of inclined air vents is provided on the periphery of the air vent to guide the hot air to form a vortex. An inner return air hood and an outer return air hood are arranged at intervals outside the heating copper core. A first cavity is formed between the inner return air hood and the heating copper core. The first cavity is connected to the lower end of the heating cavity. A second cavity is formed between the outer return air hood and the inner return air hood. An air inlet is formed at the upper end of the second cavity. The air inlet corresponds to the air vent of the air vent and the outside. A blowing structure is provided on the inner return air hood. The air outlet side of the blowing structure is connected to the first cavity, and the air inlet side of the blowing structure is connected to the second cavity.

[0005] The blower structure includes a fan blade, a rotating shaft, a mounting base, and a power source. The mounting base is sealed and connected to one side of the outer return air hood. The rotating shaft is rotatably mounted on the mounting base. The outer end of the rotating shaft is connected to the power source, and the inner end of the rotating shaft is connected to the fan blade. The fan blade is located in the side opening of the inner return air hood.

[0006] The power source is a servo motor, which is mounted on a mounting base and connected to a rotating shaft via a coupling.

[0007] The external return air cover is equipped with a heat insulation cover.

[0008] The upper end of the air nozzle is equipped with a heat insulation pad.

[0009] The beneficial effects of this invention are that the improved energy-saving circulating airflow heating device features a special air outlet structure on the nozzle that allows for precise heating of the bottom of the paper cup, ensuring that hot air is focused and sprayed onto a specific area at the bottom of the cup. Simultaneously, the hot air can be recycled and reused, improving energy efficiency and saving energy. Using a heating copper core instead of heating wire results in more stable and durable heating, a longer service life, reduced maintenance, and lower downtime losses. Attached Figure Description

[0010] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 This is a schematic diagram of the structure of the present invention.

[0012] Figure 2 This is a structural outline diagram of the present invention.

[0013] Figure 3 This is a structural diagram of the nozzle of the present invention. Detailed Implementation

[0014] The accompanying drawings illustrate the structure of the present invention, and further details will be provided below in conjunction with the drawings. In this embodiment, the energy-saving circulating airflow heating device includes a heating copper core 1, a heating cavity 11 that runs vertically through the heating copper core 1, and a nozzle 2 covering the upper end of the heating copper core 1. A ring of inclined air vents 21 is provided on the periphery of the nozzle 2 to guide hot air to form a vortex and enhance adhesion. An inner return air hood 3 and an outer return air hood 4 are arranged at intervals around the heating copper core 1. A first cavity 5 is formed between the inner return air hood 3 and the heating copper core 1. The first cavity 5 is connected to the lower end of the heating cavity 11. A second cavity 6 is formed between the outer return air hood 4 and the inner return air hood 3. An air inlet 61 is formed at the upper end of the second cavity 6. The air inlet 61 corresponds to the air vent 21 of the nozzle 2 and the outside. A blowing structure 7 is provided on the inner return air hood 3. The air outlet side of the blowing structure 7 is connected to the first cavity 5, and the air inlet side of the blowing structure 7 is connected to the second cavity 6.

[0015] As a further improved specific implementation, the blowing structure 7 includes a fan blade 71, a rotating shaft 72, a mounting base 73, and a power source 74. The mounting base 73 is sealed and connected to one side of the outer return air cover 4. The rotating shaft 72 is rotatably mounted on the mounting base 73. The outer end of the rotating shaft 72 is connected to the power source 74, and the inner end of the rotating shaft 72 is connected to the fan blade 71. The fan blade 71 is disposed in the side opening of the inner return air cover 3.

[0016] As a further improved implementation, the power source 74 is a servo motor, which is mounted on the mounting base 73 and connected to the rotating shaft 72 via a coupling 75.

[0017] As a further improved implementation, the external return air cover 4 is equipped with a heat insulation cover 8, which serves to keep the air warm and provide heat insulation protection.

[0018] As a further improvement, the upper end of the nozzle 2 is provided with a heat insulation pad 9 to insulate the non-heated area at the bottom of the cup.

[0019] The working principle of this invention is as follows: a paper cup is placed on the nozzle 2 and insulated by the heat insulation pad 9. The area to be heated at the bottom of the cup corresponds to the air outlet 21 of the nozzle 2. The servo motor drives the fan blade 71 to draw in gas from the air inlet 61 to the second chamber 6, and then the gas is sent to the heating chamber 11 by the second chamber 6. The heating copper core 1 heats the gas. After the gas fills the heating chamber 11, it is discharged from the nozzle 2, which precisely heats the bottom of the cup. The heated gas is then drawn in by the fan blade 71 for secondary use.

[0020] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An energy-saving circulating airflow heating device, characterized in that: The device includes a heating copper core with a through-hole heating chamber inside. The upper end of the heating copper core is covered with a nozzle, and the nozzle has a ring of inclined air vents on its periphery to guide hot air into a vortex. The heating copper core is equipped with an inner return air hood and an outer return air hood arranged at intervals. The inner return air hood and the heating copper core form a first cavity, which is connected to the lower end of the heating chamber. The outer return air hood and the inner return air hood form a second cavity, and the upper end of the second cavity forms an air inlet, which corresponds to the air vent of the nozzle and the outside. The inner return air hood is equipped with a blowing structure, the air outlet side of which is connected to the first cavity, and the air inlet side of which is connected to the second cavity.

2. The energy-saving circulating airflow heating device as described in claim 1, characterized in that: The blower structure includes a fan blade, a rotating shaft, a mounting base, and a power source. The mounting base is sealed and connected to one side of the outer return air hood. The rotating shaft is rotatably mounted on the mounting base. The outer end of the rotating shaft is connected to the power source, and the inner end of the rotating shaft is connected to the fan blade. The fan blade is located in the side opening of the inner return air hood.

3. The energy-saving circulating airflow heating device as described in claim 2, characterized in that: The power source is a servo motor, which is mounted on a mounting base and connected to a rotating shaft via a coupling.

4. The energy-saving circulating airflow heating device as described in claim 1, characterized in that: The external return air cover is equipped with a heat insulation cover.

5. The energy-saving circulating airflow heating device as described in claim 1, characterized in that: The upper end of the air nozzle is equipped with a heat insulation pad.

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