A hot air curtain machine

Abstract

The utility model discloses a hot air curtain machine relates to hot air curtain machine technical field, including the shell, the inside bottom symmetry fixed connection of shell has hollow shaft motor, the inside bottom symmetry screw thread connection of shell has centrifugal fan, the inside installation of hollow shaft motor has connecting shaft, and the fixed connection of connecting shaft one end and centrifugal fan, and the fixed connection of connecting shaft other end has the limit block, and the top screw thread connection of shell has the top shell, and the side installation of shell has the control button, and the inside bottom installation of shell has the controller, and control button and controller are electric connection, and the side symmetry of shell is far from control button and is set up and is passed wire hole. The utility model adopts above -mentioned structure, can effectively overcome the air duct resistance, ensures that the hot air still keeps strong airflow at the long distance, forms more stable air curtain, and the air supply efficiency is high, can deliver larger air volume in unit time, strengthens indoor and outdoor air barrier effect, can keep relatively stable air volume and air pressure output under the continuous working condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot air curtain machines, and specifically relates to a hot air curtain machine. Background Technology

[0002] A thermal air curtain is a common ventilation and heating device used in modern commercial and residential buildings. It uses a fan to blow air, combined with a heating device, to create a strong, warm air curtain at the entrances and exits of places such as shopping malls, hotels, and hospitals. In terms of working principle, the fan drives a high-speed rotating impeller, drawing in air and accelerating its expulsion, while the heating system simultaneously heats the air. Functionally, it effectively blocks the exchange of hot and cold air from the outside, reducing the loss of warm and cold air from the inside, thus providing thermal insulation; it also prevents dust and insects from entering the room, maintaining a clean indoor environment. Furthermore, its control system can adjust the fan speed and temperature, and some models even support intelligent control. Various installation methods are available, including wall-mounted and ceiling-mounted, providing convenient and practical air handling solutions for different locations.

[0003] Publication No. "CN219014562U" discloses an electric air curtain machine capable of being connected to a centralized control system, relating to the technical field of electric air curtain machines. This electric air curtain machine, capable of being connected to a centralized control system, includes structural components and a centralized control system. The structural components include a lower housing, a heating fan, two impellers, an air outlet, an upper housing, and an air inlet mesh. The centralized control system includes a display board, a control board, a host computer, and multiple slave devices. When centralized control of the electric air curtain machine is required, it can be connected to the control board via an RS-485 interface, allowing the machine to be controlled by the centralized control system. This enables real-time monitoring of the machine's start / stop, temperature setting, current temperature, and other operating statuses, as well as fault detection and identification functions. It covers most of the operational functions of traditional electric air curtain machines, including manual and remote control functions, making it more convenient to use.

[0004] Although the aforementioned utility model covers most of the operating functions of the original electric hot air blower, such as manual and remote control, making it more convenient to use, its unique long cylindrical impeller structure has relatively limited acceleration effect on the air during flow. As a result, when it is necessary to overcome greater resistance, such as long-distance air delivery, complex air ducts, or large obstructions at the air outlet, the cross-flow fan performs poorly and is difficult to effectively deliver hot air to distant locations or meet the requirements of high air pressure. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a hot air curtain machine to solve the problem that the unique long cylindrical impeller structure installed inside has a relatively limited acceleration effect on the air during the flow process. As a result, when it is necessary to overcome greater resistance, such as long-distance air supply, complex air ducts, or large obstructions at the air outlet, the cross-flow fan performs poorly and is unable to effectively deliver hot air to distant locations or meet the requirements of high air pressure.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A hot air curtain machine includes a housing. Hollow shaft motors are symmetrically fixedly connected to the bottom of the housing. Centrifugal fans are symmetrically threadedly connected to the bottom of the housing. A connecting shaft is installed inside the hollow shaft motor. One end of the connecting shaft is fixedly connected to the centrifugal fan, and the other end is fixedly connected to a limit block. A top shell is threadedly connected to the top of the housing. A control button is installed on one side of the housing, and a controller is installed at the bottom of the housing. The control button and the controller are electrically connected. symmetrical wire holes are provided on the side of the housing away from the control button. This design effectively overcomes airflow resistance, ensuring that hot air maintains a strong airflow over a longer distance, forming a more stable air curtain. It also has high air delivery efficiency, delivering a large volume of air per unit time, enhancing the indoor-outdoor air barrier effect. Furthermore, it maintains a relatively stable airflow and air pressure output during continuous operation, extending the overall service life of the equipment.

[0007] As a preferred technical solution, two hollow shaft motors and two centrifugal fans are provided. The hollow shaft motors and centrifugal fans are arranged sequentially along the direction of the outer shell. The arrangement of two hollow shaft motors and centrifugal fans along the outer shell can increase the total air volume and air pressure, make the airflow coverage more uniform, enhance the air curtain barrier effect, and adapt to larger entrance and exit scenarios.

[0008] As a preferred technical solution, threaded holes are symmetrically opened at equal distances on both sides of the outer shell, and first fixing bolts are symmetrically threaded at equal distances on both sides of the top shell. The first fixing bolts are threadedly connected to the threaded holes. The outer shell and the top shell are connected by the threaded holes and the first fixing bolts at equal distances on both sides, which not only ensures the stability of the assembly, but also facilitates the quick disassembly and assembly of the top shell, providing convenience for the internal maintenance and repair of the equipment.

[0009] As a preferred technical solution, the centrifugal fan is symmetrically fixed with connecting ears on both sides, and the top of the connecting ears is provided with mounting holes. The bottom of the outer casing is symmetrically threaded with second fixing bolts, which are threaded to the mounting holes. The centrifugal fan is connected to the second fixing bolts at the bottom of the outer casing through the mounting holes of the connecting ears on both sides, which can stably fix the fan, prevent shaking during operation, facilitate disassembly and maintenance, and improve installation flexibility.

[0010] As a preferred technical solution, air outlets are symmetrically opened on one side of the outer casing, and air guide vanes are installed inside the air outlets. The air guide vanes have an adjustable structure, and the air outlet end of the centrifugal fan is located on the side close to the air outlet. With the air outlets symmetrically arranged on one side of the outer casing and the air outlet end of the centrifugal fan close to the air outlet, combined with the adjustable air guide vanes, it can ensure efficient air delivery and flexibly adjust the air direction to adapt to various scenario requirements.

[0011] As a preferred technical solution, the top of the shell is symmetrically provided with air inlets, and the air inlet end of the centrifugal fan is located on the side close to the air inlet. A protective grille is fixedly connected inside the air inlet. The protective grille is hollow. The top of the shell is symmetrically provided with air inlets and the air inlet end of the centrifugal fan is close to the air inlet. With the hollow protective grille, it can not only ensure sufficient and efficient air intake, but also block debris and protect internal components.

[0012] In summary, the present invention has the following main advantages: In this utility model, the user sends a command via a control button on one side of the casing. After receiving the signal, the controller starts the hollow shaft motor. When the hollow shaft motor runs, its internal connecting shaft rotates synchronously. Since one end of the connecting shaft is fixed to the centrifugal fan, it drives the centrifugal fan to start. The centrifugal fan draws in air from the air inlet at the top of the casing. The protective grille inside the air inlet blocks debris from entering. After the air is pressurized by the centrifugal fan, it is blown out from the air outlet on one side of the casing. During the process, the airflow direction can be changed by adjusting the guide vanes inside the air outlet. During equipment operation, the limit block prevents the connecting shaft from falling off, and the wiring hole allows the wires to pass through, ensuring circuit connection. When shutting down, operating the control button cuts off the power supply to the controller, and all components stop working. It can effectively overcome the air duct resistance, ensuring that the hot air maintains a strong airflow over a long distance, forming a more stable air curtain. Moreover, it has high air delivery efficiency and can deliver a large air volume per unit time, enhancing the indoor and outdoor air barrier effect. At the same time, it can maintain a relatively stable air volume and air pressure output during continuous operation, extending the overall service life of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the other side of this utility model; Figure 3 This is a schematic diagram of the topless shell three-dimensional structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the other side of the topless shell of this utility model; Figure 5 This is the utility model Figure 4 Enlarged view of part A.

[0014] Reference numerals: 1. Outer shell; 2. Top shell; 3. First fixing bolt; 4. Threaded hole; 5. Hollow shaft motor; 6. Connecting shaft; 7. Limiting block; 8. Centrifugal fan; 9. Connecting lug; 10. Second fixing bolt; 11. Controller; 12. Control button; 13. Air outlet; 14. Air guide vane; 15. Air inlet; 16. Wiring hole; 17. Protective grille; 18. Mounting hole. Detailed Implementation

[0015] Example refer to Figures 1 to 5 The hot air curtain machine described in this embodiment includes a housing 1. Hollow shaft motors 5 are symmetrically fixedly connected to the bottom of the interior of the housing 1. Centrifugal fans 8 are symmetrically threadedly connected to the bottom of the interior of the housing 1. A connecting shaft 6 is installed inside the hollow shaft motor 5. One end of the connecting shaft 6 is fixedly connected to the centrifugal fan 8, and the other end of the connecting shaft 6 is fixedly connected to a limit block 7. A top shell 2 is threadedly connected to the top of the housing 1. A control button 12 is installed on one side of the housing 1. A controller 11 is installed at the bottom of the interior of the housing 1. The control button 12 and the controller 11 are electrically connected. The side of the housing 1 furthest from the control button 12... The device is equipped with a wiring hole 16. When the user operates the control button 12 on one side of the outer casing 1, the signal is transmitted to the internal controller 11. The controller 11 starts the hollow shaft motor 5, which drives the internal connecting shaft 6 to rotate. The centrifugal fan 8 connected to the other end of the connecting shaft 6 starts accordingly. The limit block 7 prevents the connecting shaft 6 from falling off. The centrifugal fan 8 draws in air from the top casing 2, pressurizes it, and sends it out from the corresponding air outlet 13. The wiring hole 16 allows the wires to pass through to ensure circuit connection. When shutting down, a command is issued through the control button 12, and the controller 11 cuts off the power, stopping all components from operating. refer to Figures 3 to 4 The hollow shaft motor 5 and the centrifugal fan 8 are each provided in pairs. The hollow shaft motor 5 and the centrifugal fan 8 are arranged sequentially along the direction of the outer shell 1. The provision of two hollow shaft motors 5 and centrifugal fans 8 arranged sequentially along the direction of the outer shell 1 can enhance the air supply capacity, make the blown air stronger and the coverage wider, and improve the effect of the hot air curtain machine in blocking air exchange and preventing dust.

[0016] refer to Figure 1 and Figure 3 The outer shell 1 has threaded holes 4 symmetrically arranged at equal distances on both sides, and the top shell 2 has first fixing bolts 3 symmetrically threadedly connected at equal distances on both sides. The first fixing bolts 3 are threadedly connected to the threaded holes 4. Through the threaded connection between the first fixing bolts 3 and the threaded holes 4 on both sides of the outer shell 1, the top shell 2 and the outer shell 1 can be securely assembled, and the top shell 2 can be easily disassembled later, providing convenience for internal maintenance of the equipment.

[0017] refer to Figure 5The centrifugal fan 8 is symmetrically fixed with connecting ears 9 on both sides. The top of the connecting ears 9 is provided with mounting holes 18. The bottom of the outer casing 1 is symmetrically threaded with second fixing bolts 10. The second fixing bolts 10 are threadedly connected to the mounting holes 18. By providing connecting ears 9 and mounting holes 18 on both sides of the centrifugal fan 8 and cooperating with the second fixing bolts 10 at the bottom of the outer casing 1 to achieve threaded connection, the centrifugal fan 8 can be firmly fixed in the outer casing 1, avoiding displacement during operation and facilitating disassembly for maintenance or replacement.

[0018] refer to Figure 1 The outer casing 1 has symmetrical air outlets 13 on one side, and air guide vanes 14 are installed inside the air outlets 13. The air guide vanes 14 have an adjustable structure. The air outlet of the centrifugal fan 8 is located on the side close to the air outlet 13. By setting the air outlets 13 on the side of the outer casing 1 with the air outlet of the centrifugal fan 8 close to the air outlet, the airflow can be efficiently delivered to the air outlet 13. With the adjustable air guide vanes 14 inside the air outlet 13, the airflow direction can be flexibly adjusted to adapt to different scenario requirements and improve the accuracy of air curtain coverage and the flexibility of use.

[0019] refer to Figure 1 The top shell 2 has symmetrical air inlets 15 on its top. The air inlet end of the centrifugal fan 8 is located on the side close to the air inlet 15. The symmetrical air inlets 15 on the top shell 2 and the air inlet end of the centrifugal fan 8 close to the air inlet 15 can allow air to enter the fan efficiently, ensuring sufficient air intake and providing a foundation for subsequent stable air supply.

[0020] refer to Figure 1 A protective grille 17 is fixedly connected inside the air inlet 15. The protective grille 17 is hollow. The hollow protective grille 17 fixed inside the air inlet 15 can not only ensure that the air enters the centrifugal fan 8 smoothly, but also block dust, debris and other objects from entering the equipment, avoid damage to the components, and ensure the stable operation of the equipment.

[0021] Operating principle and advantages: First, the user presses the control button 12 on one side of the outer casing 1. After receiving the signal, the controller 11 at the bottom inside the outer casing 1, which is electrically connected to the control button 12, starts the two hollow shaft motors 5 that are symmetrically fixed at the bottom inside the outer casing 1. The connecting shaft 6 inside the hollow shaft motor 5 rotates accordingly. Since one end of the connecting shaft 6 is fixed to the centrifugal fan 8 that is symmetrically threaded at the bottom inside the outer casing 1, and the two hollow shaft motors 5 and the centrifugal fan 8 are arranged sequentially along the direction of the outer casing 1, the two centrifugal fans 8 are driven to run synchronously. The limiting block 7 at the other end of the connecting shaft 6 can prevent the connecting shaft 6 from falling off. When the centrifugal fan 8 is running, its air inlet end is close to the air inlet 15 that is symmetrically opened at the top of the top casing 2, so it can efficiently draw in air from the air inlet 15. The hollow protective grille 17 fixed inside the air inlet 15 can block the entry of debris. At the same time, the centrifugal fan... 8 is securely fixed inside the housing 1 by the threaded connection of the top mounting holes 18 of the connecting ears 9 on both sides and the second fixing bolts 10 at the bottom of the housing 1, preventing displacement during operation; then the centrifugal fan 8 pressurizes the intake air, and the air outlet 13, which is symmetrically opened on the side of the housing 1, can deliver the pressurized air to the air outlet 13. The user can change the airflow direction by adjusting the adjustable guide vanes 14 inside the air outlet 13. The symmetrical wire holes 16 on the side of the housing 1 away from the control button 12 allow the wires to pass through to ensure the circuit connection; when it is necessary to stop working, the user presses the control button 12 again, the controller 11 cuts off the power, and the hollow shaft motor 5 and the centrifugal fan 8 stop running. If maintenance is required later, the first fixing bolts 3 that are threaded to the threaded holes 4 on both sides of the top shell 2 and the housing 1 can be unscrewed, and the top shell 2 can be disassembled to inspect the internal components; This invention can effectively overcome duct resistance, ensuring that hot air maintains a strong airflow over a long distance, forming a more stable air curtain. It also has high air delivery efficiency, delivering a large volume of air per unit time, enhancing the indoor and outdoor air barrier effect. At the same time, it can maintain a relatively stable air volume and air pressure output during continuous operation, extending the overall service life of the equipment.

Claims

1. A heat curtain machine, comprising a housing, characterized in that: A hollow shaft motor is symmetrically fixedly connected to the bottom of the inner shell. A centrifugal fan is symmetrically threaded to the bottom of the inner shell. A connecting shaft is installed inside the hollow shaft motor. One end of the connecting shaft is fixedly connected to the centrifugal fan, and the other end of the connecting shaft is fixedly connected to a limit block. A top shell is threaded to the top of the outer shell. A control button is installed on one side of the outer shell. A controller is installed at the bottom of the inner shell. The control button and the controller are electrically connected. Wire holes are symmetrically opened on the side of the outer shell away from the control button.

2. A heat curtain machine according to claim 1, characterized in that: The hollow shaft motor and the centrifugal fan are each provided in pairs, and the hollow shaft motor and the centrifugal fan are arranged sequentially along the direction of the outer casing.

3. A heat curtain machine according to claim 1, characterized in that: The outer shell has threaded holes symmetrically arranged at equal distances on both sides, and the top shell has first fixing bolts symmetrically threaded at equal distances on both sides, with the first fixing bolts being threadedly connected to the threaded holes.

4. A heat curtain machine according to claim 1, characterized in that: The centrifugal fan is symmetrically fixed with connecting ears on both sides, and the top of the connecting ears is provided with mounting holes. The bottom of the outer casing is symmetrically threaded with second fixing bolts, and the second fixing bolts are threadedly connected to the mounting holes.

5. A heat curtain machine according to claim 1, characterized in that: The outer casing has symmetrical air outlets on one side, and air guide vanes are installed inside the air outlets. The air guide vanes are adjustable, and the air outlet of the centrifugal fan is located on the side near the air outlet.

6. A heat curtain machine according to claim 1, characterized in that: The top of the top shell has symmetrical air inlets, and the air inlet of the centrifugal fan is located on the side near the air inlet.

7. A heat curtain machine according to claim 6, characterized in that: A protective grille is fixedly connected inside the air inlet, and the protective grille is hollowed out.

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