Air diffuser with motorized control system

Abstract

The present application relates to the technical fields of ventilation system end device, and discloses a wind volume adjustable air distributor with an electric control system, which comprises the electric control system and the air distributor, wherein the air distributor comprises a ship cabin, the inner side wall of the ship cabin is provided with an air outlet, the upper end of the air outlet is fixedly connected with an air outlet pipe, the side end of the air outlet pipe is fixedly connected with an air outlet processor, the lower end of the air outlet processor is fixedly connected with an air inlet processor, the side end of the air inlet processor is fixedly connected with a first air supply pipe, the side end of the first air supply pipe is fixedly connected with an independent air conditioner processor, and the side end of the independent air conditioner processor is fixedly connected with a second air supply pipe. The air volume of the air distributor is adjustable, and the air distributor body can control the air volume of the cabin independently when the cabin is ventilated by the electric control system, thereby improving the practicability of the air volume adjustable air distributor.

Description

Technical Field

[0001] This invention relates to the field of ventilation system terminal devices, and particularly to an adjustable air volume distributor with an electric control system. Background Technology

[0002] The total air volume of a constant air volume air conditioning system is not adjustable, and the air volume of each compartment can only be manually adjusted through the air distributor. If the air volume of one compartment is reduced, the air volume of other compartments will increase accordingly, the static pressure in the air duct will rise, and excessive air volume adjustment will cause the noise in the compartment to increase.

[0003] To further improve the operational economy of the ship's air conditioning system, a variable air volume (VAV) air conditioning system is adopted for cabins with fewer than four passengers or crew members. This system involves installing VAV terminal units at the end of the pre-insulated spiral duct for air supply. The air supply volume of each VAV terminal unit in the system is adjusted according to changes in cabin load to maintain a relatively constant cabin air temperature. For example, when the cabin air conditioning load decreases, the air conditioner adjusts the fan speed through a frequency converter. While stabilizing the static pressure in the outlet static pressure box, the air supply volume of the air conditioner is reduced, which can reduce system operating noise and save energy.

[0004] The variable air volume (VAV) terminal unit can set the minimum and maximum air volume. Within this range, the air volume can be automatically adjusted according to the temperature setting, and the measured air volume value can be output.

[0005] Through research on constant air volume (CAV) air conditioning systems on passenger ro-ro ships, we found the following common problems: Both CAV and variable air volume (VAV) air conditioning systems rely on terminal air distributors for air delivery, but none of these distributors have an automatic control function to adjust the airflow direction, and the cabin noise level is relatively high. Therefore, to solve these problems, we propose an air distributor with an adjustable airflow control system. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides an adjustable airflow distributor with an electric control system. This solves the technical problem that both constant air volume (CAV) and variable air volume (VAV) air conditioning systems require air distribution through terminal air distributors, but these distributors do not have the function of automatically controlling and adjusting the airflow direction, and the cabin noise is relatively high.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An adjustable airflow distributor with an electric control system includes an adjustable airflow distributor with an electric control system. The adjustable airflow distributor includes a ship compartment. An exhaust vent is provided on the inner wall of the ship compartment. An exhaust pipe is fixedly installed at the upper end of the exhaust vent. An exhaust processor is fixedly installed at the side end of the exhaust pipe. An air inlet processor is fixedly installed at the lower end of the exhaust processor. An air supply pipe is fixedly installed at the side end of the air inlet processor. An independent air conditioning processor is fixedly installed at the side end of the independent air conditioning processor. An air supply pipe is fixedly installed at the side end of the independent air conditioning processor.

[0011] The air supply duct is located on one side of the exhaust duct;

[0012] The air supply duct 2 is fixedly installed with an air distributor body, the inner side wall of the air distributor body is fixedly installed with a bearing block 1, the side end of the bearing block 1 is rotatably installed with a rotating shaft 1, and the side end of the rotating shaft 1 is fixedly installed with a rotating fan.

[0013] The rotating fan is located on one side of the second air supply duct.

[0014] Preferably, a few interference flow grid plates are rotatably installed on the inner side wall of the air distributor body;

[0015] Each of the aforementioned baffle plates is arranged at equal intervals on one side of the rotating fan, and each of the aforementioned baffle plates is located away from the side of the air supply duct.

[0016] A sound-absorbing plate is fixedly installed on the inner wall of the air distributor body, and a fan is rotatably installed on the inner wall of the air distributor body.

[0017] The sound-absorbing plate is made of porous rock wool, and the fan is equipped with a separate servo motor.

[0018] The upper end of the air distributor body is fixedly installed with a bearing block two, and the side end of the bearing block two is rotatably installed with a rotating shaft two.

[0019] The second rotating shaft and the first bearing block are installed symmetrically.

[0020] A transmission belt is provided between the first rotating shaft and the second rotating shaft;

[0021] The transmission belt is installed through the upper end of the air distributor body.

[0022] A support base is fixedly installed at the upper end of the air distributor body, and a sliding groove is provided at the upper end of the support base.

[0023] The support base is located above the fan.

[0024] A support plate is slidably installed on the inner side wall of the chute, and a ring rack is fixedly installed on the side end of the support plate. A transmission gear is fixedly installed on the side end of the second rotating shaft.

[0025] The transmission gear is meshed with the ring rack.

[0026] Several exhaust fan blades are fixedly installed at the upper end of the support plate;

[0027] Each of the exhaust fan blades is arranged at equal intervals and angles at the upper end of the support plate.

[0028] The same top plate is fixedly installed at the upper end of each of the support plates;

[0029] The top plate is located above the fan.

[0030] Preferably, the electric control system includes the following steps;

[0031] S1: The independent fresh air multi-functional air conditioning system is divided into two-stage air handling. Fresh air is first centrally processed by the fresh air air conditioner and then sent to the independent fresh air multi-functional air conditioner. The independent fresh air multi-functional air conditioner is classified and configured for similar crew or passenger cabins, public cabins, offices, service areas, etc.

[0032] S2: Fresh air air conditioner handles fresh air and is a constant air volume (CAV) system. The fresh air volume is selected according to the maximum value of the air volume required by the personnel and the exhaust volume of the toilet.

[0033] S3: Fresh air is filtered, cooled, dehumidified, or preheated by the fresh air air conditioner. The air treated by the fresh air air conditioner is sent to an independent fresh air multi-functional air conditioner for secondary treatment through a pre-insulated spiral duct.

[0034] S4: An independent fresh air multi-functional air conditioner is configured on the same deck or in a group of cabins with similar loads on the passenger roll-on / roll-off ship. Under normal circumstances, each independent fresh air multi-functional air conditioner serves multiple cabins. The independent fresh air multi-functional air conditioner operates in a variable air volume mode. The return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the independent fresh air multi-functional air conditioner and then sent to the constant air volume or variable air volume air distributor with reheater in the cabin through a pre-insulated spiral air duct.

[0035] (III) Beneficial Effects

[0036] 1. Air is supplied to the independent air conditioning processor through air supply duct one. The independent air conditioning processor performs secondary filtration, cooling, dehumidification, or reheating, humidification, disinfection and sterilization on the air. After that, the independent air conditioning processor supplies the secondary-treated air to air supply duct two, and then air supply duct two supplies the air to the air distributor body. By designing the adjustable air volume air distributor as a secondary treatment, the air distribution to the cabin is first treated by the air intake processor and then second-treated by the independent air conditioning processor, thereby improving the working efficiency of the electrically controlled system.

[0037] Second, the air from the exhaust duct is transferred to the exhaust air processor, while the remaining air is transferred to the corridor. The return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the intake air processor, and then undergoes secondary treatment by the independent air conditioning processor. It is then introduced into the supply air duct 2 by the independent air conditioning processor, and finally sent to the air distributor body by the supply air duct 2. By designing the adjustable air volume air distributor to handle return air, when distributing air to the cabin, the return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the intake air processor and the independent air conditioning processor, and then sent to the air distributor body by the supply air duct 2, thereby improving the efficiency of the air distribution system.

[0038] 3. Rotating shaft one drives the transmission belt, which in turn drives rotating shaft two. Rotating shaft two, in turn, drives the transmission gear, which in turn rotates. Because the transmission gear meshes with the ring rack, the rotation of the transmission gear drives the ring rack to rotate, which in turn drives the support plate. The support plate, under force, rotates within the sliding groove, which in turn drives the exhaust fan blades to rotate. The rotation of the exhaust fan blades adjusts the direction of the airflow discharged from the air distributor body. By designing the adjustable airflow air distributor with automatic airflow direction adjustment, when the electric control system distributes air to the cabin, the air distributor body can distribute air evenly, thereby effectively improving the comfort of the cabin airflow.

[0039] Fourth, the rotating baffles turbulent the airflow, thereby reducing the impact of the airflow entering the air distributor. As fresh air enters the air distributor, the sound-absorbing plates inside the air distributor reduce the noise of the incoming fresh air. By adding multiple sets of baffles and sound-absorbing plates to the adjustable airflow air distributor, the baffles turbulent the airflow to reduce the impact of the fresh air when it is sent into the air distributor, and the sound-absorbing plates reduce the noise of the incoming fresh air, thus effectively solving the problem of high noise levels inside the cabin.

[0040] 5. The rotating baffle plate turbulents the airflow, allowing fresh air to enter the air distributor body. Then, the supply fan is activated, and its rotation turbulents the airflow. When the airflow is too strong or too weak, the speed of the supply fan is increased or decreased to regulate the airflow. By designing the adjustable airflow air distributor to be adjustable in terms of airflow, when the air distributor body is used to distribute air to the cabin with the electric control system, the air distributor body can perform individual airflow control within the cabin, thereby effectively improving the practicality of the adjustable airflow air distributor. Attached Figure Description

[0041] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Figure 1 This is a structural diagram of the exhaust fan processor of the present invention;

[0043] Figure 2 This is a structural diagram of the air intake processor of the present invention;

[0044] Figure 3 This is a structural diagram of the exhaust duct of the present invention;

[0045] Figure 4 This is a structural diagram of the air distributor body of the present invention;

[0046] Figure 5 This is a structural diagram of the rotating fan of the present invention;

[0047] Figure 6 This is a structural diagram of the sound-absorbing plate of the present invention;

[0048] Figure 7 This is a structural diagram of the transmission gear of the present invention;

[0049] Figure 8 This is a cross-sectional structural diagram of the air distributor of the present invention.

[0050] Legend: 1. Ship compartment; 11. Exhaust vent; 12. Exhaust duct; 13. Exhaust air processor; 14. Intake air processor; 15. Air supply duct one; 16. Independent air conditioning processor; 17. Air supply duct two; 2. Air distributor body; 21. Support block one; 22. Rotating shaft one; 23. Rotating fan; 24. Deflector grille; 25. Silencing plate; 26. Air supply fan; 27. Support block two; 28. Rotating shaft two; 29. ​​Transmission belt; 3. Transmission gear; 31. Ring rack; 32. Support base; 33. Slide groove; 34. Support plate; 35. Exhaust fan blade; 36. Top plate. Detailed Implementation

[0051] This application provides an adjustable airflow distributor with an electric control system, which effectively solves the technical problem that both constant air volume (CAV) and variable air volume (VAV) air conditioning systems require air distribution through terminal air distributors, but their air distributors do not have the function of automatically controlling and adjusting the airflow direction, and the cabin noise is relatively high.

[0052] Example

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 ,and Figure 8 As shown, the technical solution in this application embodiment effectively solves the technical problem that both constant air volume (CAV) and variable air volume (VAV) air conditioning systems require air distribution through terminal air distributors, but neither of these air distributors has an automatic control function to adjust the airflow direction, and the cabin noise is relatively high. The overall approach is as follows:

[0054] To address the problems existing in the prior art, this invention provides an adjustable airflow distributor with an electric control system, comprising an adjustable airflow distributor with an electric control system. The adjustable airflow distributor includes a ship cabin 1, with an exhaust vent 11 provided on the inner wall of the ship cabin 1. An exhaust pipe 12 is fixedly installed at the upper end of the exhaust vent 11, and an exhaust processor 13 is fixedly installed at the side end of the exhaust pipe 12. An air inlet processor 14 is fixedly installed at the lower end of the exhaust processor 13, and a first air supply pipe 15 is fixedly installed at the side end of the air inlet processor 14. An independent air conditioning processor 16 is fixedly installed at the side end of the first air supply pipe 15, and a second air supply pipe 17 is fixedly installed at the side end of the independent air conditioning processor 16. Airflow is delivered into the distributor body 2 through the second air supply pipe 17, and the airflow drives a rotating fan 23 to rotate. The rotating fan 23 rotates under force, driving a rotating shaft 22. The rotating shaft 22 rotates under force, driving a transmission. The transmission belt 29, under force, drives the rotating shaft 28 to rotate. The rotating shaft 28, under force, drives the transmission gear 3 to rotate. Since the transmission gear 3 is meshed with the ring rack 31, the rotation of the transmission gear 3 drives the ring rack 31 to rotate. The rotation of the ring rack 31 drives the support plate 34. The support plate 34, under force, rotates in the sliding groove 33. The rotation of the support plate 34 drives the exhaust fan blade 35 to rotate. The rotation of the exhaust fan blade 35 adjusts the direction of the air discharged from the air distributor body 2. The air supply pipe 15 is located on one side of the exhaust pipe 12. The air distributor body 2 is fixedly installed on the side end of the air supply pipe 17. The bearing block 21 is fixedly installed on the inner wall of the air distributor body 2. The rotating shaft 22 is rotatably installed on the side end of the bearing block 21. The rotating fan 23 is fixedly installed on the side end of the rotating shaft 22. The rotating fan 23 is located on one side of the air supply pipe 17.

[0055] A few turbulence-disrupting grid plates 24 are rotatably installed on the inner wall of the air distributor body 2. When the wind blows, the turbulence-disrupting grid plates 24 rotate under the wind force, thus turbulenting the wind and reducing the impact force of the wind entering the air distributor body 2. As fresh air enters the air distributor body 2, the sound-absorbing plate 25 inside the air distributor body 2 reduces the noise of the incoming fresh air. Each turbulence-disrupting grid plate 24 is equidistantly arranged on one side of the rotating fan 23. On the side, each baffle plate 24 is located away from the side of the air supply duct 2 17; a sound-absorbing plate 25 is fixedly installed on the inner wall of the air distributor body 2, and an air supply fan 26 is rotatably installed on the inner wall of the air distributor body 2; wherein, the sound-absorbing plate 25 is made of porous rock wool, and the air supply fan 26 is equipped with a separate servo motor; a bearing block 27 is fixedly installed on the upper end of the air distributor body 2, and a rotating shaft 28 is rotatably installed on the side end of the bearing block 27; wherein, the rotating shaft 28 and The bearing block 21 is symmetrically installed; a transmission belt 29 is provided between the rotating shaft 22 and the rotating shaft 28; the transmission belt 29 is installed through the upper end of the air distributor body 2; a support base 32 is fixedly installed at the upper end of the air distributor body 2, and a sliding groove 33 is opened at the upper end of the support base 32; the support base 32 is located above the air blower 26; a support plate 34 is slidably installed on the inner side wall of the sliding groove 33, and a ring rack 31 is fixedly installed on the side end of the support plate 34; a transmission gear 3 is fixedly installed on the side end of the rotating shaft 28; the transmission gear 3 and the ring rack 31 are meshed; several rows of fan blades 35 are fixedly installed at the upper end of the support plate 34; each fan blade 35 is arranged at equal intervals and angles at the upper end of the support plate 34; the same top plate 36 is fixedly installed at the upper end of each support plate 34; the top plate 36 is located above the air blower 26.

[0056] The electric control system includes the following steps;

[0057] S1: The independent fresh air multi-functional air conditioning system is divided into two-stage air handling. Fresh air is first centrally processed by the fresh air air conditioner and then sent to the independent fresh air multi-functional air conditioner. The independent fresh air multi-functional air conditioner is classified and configured for similar crew or passenger cabins, public cabins, offices, service areas, etc.

[0058] S2: Fresh air air conditioner handles fresh air and is a constant air volume (CAV) system. The fresh air volume is selected according to the maximum value of the air volume required by the personnel and the exhaust volume of the toilet.

[0059] S3: Fresh air is filtered, cooled, dehumidified, or preheated by the fresh air air conditioner. The air treated by the fresh air air conditioner is sent to an independent fresh air multi-functional air conditioner for secondary treatment through a pre-insulated spiral duct.

[0060] S4: An independent fresh air multi-functional air conditioner is configured on the same deck or in a group of cabins with similar loads on the passenger roll-on / roll-off ship. Under normal circumstances, each independent fresh air multi-functional air conditioner serves multiple cabins. The independent fresh air multi-functional air conditioner operates in a variable air volume mode. The return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the independent fresh air multi-functional air conditioner and then sent to the constant air volume or variable air volume air distributor with reheater in the cabin through a pre-insulated spiral air duct.

[0061] Working principle:

[0062] The first step, when using the electric control system, involves the operator activating the air intake processor 14. The air intake processor 14 filters, cools, dehumidifies, or reheats, humidifies, and disinfects the outside air before sending it into the air supply duct 15. From there, the air supply duct 15 sends the air into the independent air conditioning processor 16. The independent air conditioning processor 16 performs secondary filtration, cooling, dehumidification, or reheating, humidification, and disinfection on the air. After that, the independent air conditioning processor 16 sends the secondary-treated air into the air supply duct 17, and then from the air supply duct 17 into the air distributor body 2. By designing the adjustable airflow distributor for secondary treatment, the air distribution to the cabin involves initial treatment by the air intake processor 14 followed by secondary treatment by the independent air conditioning processor 16, thereby improving the working efficiency of the electric control system.

[0063] The second step involves the use of an electric control system. After filtration, cooling, dehumidification, or reheating, humidification, and disinfection, the air is discharged through the exhaust duct 12 and then transferred to the exhaust air processor 13. The remaining air is transferred to the corridor. The return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected again by the air intake processor 14 and then undergoes secondary treatment by the independent air conditioning processor 16. The independent air conditioning processor 16 then introduces the air supply duct 17 and finally sends it to the air distributor body 2. By designing the adjustable air volume air distributor to handle return air, when distributing air to the cabin, the return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the air intake processor 14 and the independent air conditioning processor 16 and then sent to the air distributor body 2 through the air supply duct 17, thereby improving the efficiency of the air distribution system.

[0064] Thirdly, when the adjustable air volume distributor is in use, air is delivered into the distributor body 2 through air supply pipe 17. The air force drives the rotating fan 23 to rotate, which in turn drives the rotating shaft 22 to rotate. The rotating shaft 22 in turn drives the transmission belt 29 to rotate, which in turn drives the rotating shaft 28 to rotate. The rotating shaft 28 in turn drives the transmission gear 3 to rotate. Because the transmission gear 3 is meshed with the ring rack 31, the transmission gear 3 rotates... The motor drives the ring rack 31 to rotate, which in turn drives the support plate 34. The support plate 34 rotates within the slide groove 33 under force, which in turn drives the exhaust fan blades 35 to rotate. The rotation of the exhaust fan blades 35 adjusts the direction of the airflow discharged from the air distributor body 2. By designing the adjustable airflow air distributor to automatically adjust the airflow direction, when the air distributor body 2 distributes air evenly in the cabin with the electric control system, the comfort of the air distribution in the cabin is effectively improved.

[0065] Fourthly, when the adjustable air volume distributor is in use, air is delivered into the distributor body 2 through the air supply duct 17. The air blows the baffle 24, causing it to rotate. This rotation of the baffle 24 turbulents the airflow, reducing the impact of the airflow entering the distributor body 2. As fresh air enters the distributor body 2, the sound-absorbing plate 25 inside the distributor body 2 reduces the noise of the incoming fresh air. By adding multiple sets of baffle 24 and sound-absorbing plates 25 to the adjustable air volume distributor, the baffle 24 turbulents the airflow, reducing the impact of the fresh air, and the sound-absorbing plate 25 reduces the noise of the incoming fresh air, thus effectively solving the problem of high noise levels inside the cabin.

[0066] Fifth, when the adjustable air volume distributor is in use, air is delivered into the distributor body 2 through the air supply pipe 17. The air blows the turbulence grille 24, which rotates under the influence of the air. The rotation of the turbulence grille 24 turbulents the air. After that, fresh air enters the distributor body 2. Then, the supply fan 26 is started, and the supply fan 26 rotates to turbulent the air. When the air is too strong or too weak, the speed of the supply fan 26 is increased or decreased to adjust the air. By designing the adjustable air volume distributor to be adjustable in terms of air volume, when the electric control system is used to distribute air into the cabin, the distributor body 2 can perform individual air volume control within the cabin, thereby effectively improving the practicality of the adjustable air volume distributor.

[0067] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An adjustable airflow distributor with an electric control system, comprising an electric control system and an adjustable airflow distributor, characterized in that, The adjustable air volume distributor includes a ship cabin (1), an exhaust port (11) is provided on the inner wall of the ship cabin (1), an exhaust pipe (12) is fixedly installed at the upper end of the exhaust port (11), an exhaust processor (13) is fixedly installed at the side end of the exhaust pipe (12), an air intake processor (14) is fixedly installed at the lower end of the exhaust processor (13), an air supply pipe (15) is fixedly installed at the side end of the air intake processor (14), an independent air conditioning processor (16) is fixedly installed at the side end of the air supply pipe (15), and an air supply pipe (17) is fixedly installed at the side end of the independent air conditioning processor (16). The air supply pipe (15) is located on one side of the exhaust pipe (12); Among them, the air supply pipe 2 (17) is fixedly installed with a distributor body (2) at its side end, and a bearing block 1 (21) is fixedly installed on the inner side wall of the air distributor body (2). A rotating shaft 1 (22) is rotatably installed on the side end of the bearing block 1 (21), and a rotating fan (23) is fixedly installed on the side end of the rotating shaft 1 (22). The rotating fan (23) is located on one side of the air supply pipe 2 (17). The inner wall of the air distributor body (2) is rotatably equipped with several turbulence grid plates (24); each of the turbulence grid plates (24) is equidistantly arranged on one side of the rotating fan (23), and each of the turbulence grid plates (24) is away from the side of the air supply pipe (17). The inner wall of the air distributor body (2) is fixedly equipped with a sound-absorbing plate (25), and the inner wall of the air distributor body (2) is rotatably equipped with a fan (26); the material of the sound-absorbing plate (25) is porous rock wool, and the fan (26) is equipped with a separate servo motor. The upper end of the air distributor body (2) is fixedly installed with a second bearing block (27), and the side end of the second bearing block (27) is rotatably installed with a second rotating shaft (28); the second rotating shaft (28) and the first bearing block (21) are installed symmetrically. A transmission belt (29) is provided between the first rotating shaft (22) and the second rotating shaft (28); the transmission belt (29) is installed through the upper end of the air distributor body (2); The upper end of the air distributor body (2) is fixedly equipped with a support base (32), and the upper end of the support base (32) is provided with a sliding groove (33); the support base (32) is located above the air blower (26); The inner wall of the slide groove (33) is slidably fitted with a support plate (34), and the side end of the support plate (34) is fixedly fitted with an annular rack (31). The side end of the rotating shaft (28) is fixedly fitted with a transmission gear (3); the transmission gear (3) meshes with the annular rack (31). Among them, a number of exhaust fan blades (35) are fixedly installed on the upper end of the support plate (34); each of the exhaust fan blades (35) is arranged at equal intervals and angles on the upper end of the support plate (34); Each of the support plates (34) has the same top plate (36) fixedly installed at its upper end; the top plate (36) is located above the fan (26); The electric control system includes the following steps; S1: The independent fresh air multi-functional air conditioning system is divided into two-stage air handling. Fresh air is first centrally processed by the fresh air air conditioner and then sent to the independent fresh air multi-functional air conditioner. The independent fresh air multi-functional air conditioner is classified and configured for similar crew or passenger cabins, public cabins, offices and service areas. S2: Fresh air air conditioner handles fresh air and is a constant air volume (CAV) system. The fresh air volume is selected according to the maximum value of the air volume required by people and the exhaust volume of the toilet. S3: Fresh air is filtered, cooled, dehumidified, or preheated by the fresh air air conditioner. The air treated by the fresh air air conditioner is sent to an independent fresh air multi-functional air conditioner for secondary treatment through a pre-insulated spiral duct. S4: An independent fresh air multi-functional air conditioner is configured on the same deck or in a group of cabins with similar loads on the passenger roll-on / roll-off ship. Under normal circumstances, each independent fresh air multi-functional air conditioner serves multiple cabins. The independent fresh air multi-functional air conditioner operates in a variable air volume mode. The return air from the corridor is filtered, cooled, dehumidified, or reheated, humidified, and disinfected by the independent fresh air multi-functional air conditioner and then sent to the constant air volume or variable air volume air distributor with reheater in the cabin through a pre-insulated spiral air duct.

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