Ship vehicle cabin ventilation system utilizing natural wind

Abstract

The application provides a ship vehicle cabin ventilation system utilizing natural wind, the ship vehicle cabin comprises a vehicle cabin bow door, a vehicle cabin stern door, a left cabin wall and a right cabin wall, the ventilation system comprises a plurality of bow louvers and a plurality of stern louvers, the plurality of bow louvers are arranged on the cabin wall where the vehicle cabin bow door is located and symmetrically distributed on both sides of the bow door, and the plurality of stern louvers are respectively arranged on the left cabin wall and the right cabin wall close to one side of the vehicle cabin stern door. The ship vehicle cabin ventilation system utilizing natural wind utilizes the natural wind on the sea to the maximum extent to naturally ventilate the vehicle cabin, achieves the energy-saving effect, and in order to overcome the instability of the external natural wind, the tunnel fan, the air quality sensor and the wind speed sensor are used to ensure the ventilation effect in the vehicle cabin.

Description

Technical Field

[0001] This invention belongs to the field of ship vehicle cabin ventilation technology, specifically relating to a ship vehicle cabin ventilation system that utilizes natural wind. Background Technology

[0002] Vehicles in the vehicle compartments of passenger roll-on / roll-off (Ro-Ro) ships, car carriers, and other similar vessels generate harmful gases, requiring continuous ventilation to dilute and expel these gases using fresh air from outside the ship. Due to the large volume of the vehicle compartments, traditional mechanical ventilation methods involve numerous fans, which consume significant amounts of electricity. On the other hand, the sea offers abundant natural winds, and the ship itself experiences relative motion with the outside air during navigation. If natural winds from the sea could be directly utilized for ventilation in the vehicle compartments, the electricity consumption of traditional mechanical ventilation fans could be saved. However, the magnitude and direction of natural winds at sea, as well as the ship's course, are constantly changing, so these uncertainties must be carefully considered when utilizing natural winds at sea. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a ship vehicle cabin ventilation system that utilizes natural wind to maximize the use of natural sea wind for natural ventilation of the vehicle cabin, achieving energy-saving effects. Furthermore, to overcome the instability of external natural wind, a tunnel fan, an air quality sensor, and a wind speed sensor are used to ensure the ventilation effect inside the vehicle cabin.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A ventilation system for a ship's vehicle compartment utilizing natural wind, the vehicle compartment including a bow door, a stern door, a port bulkhead, and a starboard bulkhead, the ventilation system including multiple bow louvers and multiple stern louvers, the multiple bow louvers being located on the bulkhead where the bow door is located and symmetrically distributed on both sides of the bow door, the multiple stern louvers being located on the port bulkhead and starboard bulkhead respectively on the side near the stern door of the vehicle compartment.

[0006] Furthermore, the ventilation system also includes multiple sets of tunnel fans, multiple sets of air quality sensors, and a ventilation system control box. The tunnel fans are fixed at intervals to the top of the vehicle compartment, and the air quality sensors are fixed at intervals to the left and right inner walls of the vehicle compartment. The air quality sensors are used to monitor and collect air quality data within the vehicle compartment. The ventilation system control box includes an external anemometer, an air quality setting module, a signal receiving module, and a PLC control module. The tunnel fans are electrically connected to the PLC control module. The external anemometer receives signals of the external natural wind direction, and the air quality setting module is used to set the optimal air quality for ship loading / unloading and navigation modes. The low-value signal receiving module communicates with the external anemometer, air quality sensor, and PLC control module to receive air quality data monitored by the air quality sensor, signals of the external natural wind direction obtained by the external anemometer, and the opening and closing status signals of the bow and stern doors. The PLC control module processes the opening and closing status signals of the bow and stern doors to determine whether the ship is in loading / unloading mode or navigation mode. It controls the running direction of the tunnel ventilation fan according to the angle between the wind direction and the ship's navigation direction. It compares the air quality data with the minimum air quality value in the corresponding ship operating mode. When the air quality data is lower than the minimum air quality value, the PLC control module controls the number of tunnel ventilation fans in operation.

[0007] Furthermore, the ventilation system also includes multiple sets of wind speed sensors, which are fixed at intervals on the top of the vehicle compartment. The ventilation system control box also includes an air change rate setting module 13, used to set the minimum air change rate in ship loading / unloading mode and ship navigation mode. The wind speed sensors are communicatively connected to the signal receiving module. The wind speed sensors are used to measure the speed of air movement in the vehicle compartment and calculate the actual air change rate in the vehicle compartment. The signal receiving module receives the actual air change rate output by the wind speed sensor. The PLC control module processes and compares the actual air change rate with the set minimum air change rate in the determined ship working mode. When the actual air change rate is less than the minimum air change rate, the PLC control module controls the number of tunnel fans in operation.

[0008] Furthermore, when the angle between the natural wind direction and the ship's direction is less than or equal to 90 degrees, the tunnel ventilation fan operates in the forward direction; when the angle between the natural wind direction and the ship's direction is greater than 90 degrees, the tunnel ventilation fan operates in the reverse direction.

[0009] Furthermore, the air quality sensors, tunnel fans, and wind speed sensors are arranged in groups from the bow to the stern, with multiple air quality sensors, tunnel fans, and wind speed sensors in each group arranged at intervals along the width of the vehicle compartment.

[0010] Furthermore, baffles are fixedly covered on the outer side of the strong structure of the left bulkhead, right bulkhead and top bulkhead of the vehicle compartment.

[0011] When the ship is sailing at sea, both the bow and stern doors are closed. When the ship is at the dock loading and unloading cargo, both the bow and stern doors are open. The open / closed status signals of the bow and stern doors are fed back to the ventilation system control box. When one door is open, it is in loading / unloading mode; when both doors are closed, it is in sea navigation mode. Both loading / unloading and sea navigation modes have various minimum air exchange rates and minimum air quality, which are set in the ventilation system control box. The signal from the external anemometer is fed back to the ventilation system control box, and the PLC determines whether the tunnel fan is operating in the forward or reverse direction based on the angle between the wind direction and the ship's direction. The signals from the air quality sensor and the anemometer are fed back to the ventilation system control box, and the PLC calculates and controls the number of tunnel fans in operation.

[0012] The ship vehicle cabin ventilation system utilizing natural wind of this invention operates as follows: When the ship is sailing at sea, the external air exerts a certain wind pressure on the bow louvers, allowing the air to enter the vehicle cabin through the bow louvers and exit through the stern louvers. When the air quality inside the vehicle cabin is substandard or the actual air exchange rate is less than the minimum, the tunnel fan starts, generating thrust on the air inside the vehicle cabin, promoting air movement, and allowing more fresh air to enter the vehicle cabin to carry away the harmful gases emitted by the vehicle. In the ship's sailing mode, the tunnel fan runs towards the stern; during loading and unloading, the tunnel fan's running direction depends on the direction of the external natural wind. In both cases, the number of tunnel fans activated depends on the feedback signals from the wind speed sensor and air quality sensor inside the vehicle cabin.

[0013] This invention, a natural wind-based ventilation system for ship vehicle compartments, solves the problem of high energy consumption associated with traditional mechanical ventilation in vehicle compartments. It maximizes the use of natural ventilation outside the ship to achieve energy savings and reduce ship operating costs. During sea voyages, the relative motion between the sea air and the ship eliminates the need for complete mechanical ventilation, saving significant amounts of power to the ventilation fans. Considering the uncertainty of the marine environment, tunnel fans are installed to ensure air quality and air exchange rates within the vehicle compartments. These tunnel fans can also provide ventilation when the ship is loading and unloading cargo in port. The baffle design reduces air resistance within the vehicle compartments, further reducing the required air exchange rate. In addition to energy savings, the system offers advantages such as eliminating the need for structural ductwork, small footprint, light weight, low noise, simple control logic, and low cost. Attached Figure Description

[0014] Figure 1 This is a layout diagram of the ship vehicle cabin ventilation system utilizing natural wind as described in this invention;

[0015] Figure 2This is a control framework diagram of the ship vehicle cabin ventilation system utilizing natural wind as described in this invention;

[0016] Figure 3 This is a flowchart illustrating the process of the ship vehicle cabin ventilation system utilizing natural wind as described in this invention.

[0017] Among them, 1-Bow door of vehicle compartment, 2-Stern door of vehicle compartment, 3-Left bulkhead, 4-Right bulkhead, 5-Baffle, 6-Bow louver, 7-Stern louver, 8-Tunnel fan, 9-Wind speed sensor, 10-Air quality sensor, 11-External anemometer, 12-Air quality setting module, 13-Air change rate setting module, 14-Signal receiving module, 15-PLC control module. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1-3 The diagram illustrates a natural wind ventilation system for a ship's vehicle compartment. The vehicle compartment includes a bow door 1, a stern door 2, a port bulkhead 3, and a starboard bulkhead 4. Baffles 5 are fixedly installed on the outer side of the strong structure of the port bulkhead 3, the starboard bulkhead 4, and the roof of the vehicle compartment. The ventilation system includes multiple bow louvers 6 and multiple stern louvers 7. The bow louvers 6 are located on the bulkhead where the bow door 1 is located and are symmetrically distributed on both sides of the bow door 1. The stern louvers 7 are respectively located on the side of the port bulkhead 3 and the starboard bulkhead 4 near the stern door 2.

[0020] The ventilation system also includes multiple sets of tunnel fans 8, multiple sets of wind speed sensors 9, multiple sets of air quality sensors 10, an external anemometer 11, and a ventilation system control box. Multiple sets of tunnel fans 8 are fixed at intervals to the top of the vehicle compartment. Multiple sets of wind speed sensors 9 are fixed at intervals to the top of the vehicle compartment. Multiple sets of air quality sensors 10 are fixed at intervals to the inner walls of the left and right sides of the vehicle compartment. The air quality sensors 10, tunnel fans 8, and wind speed sensors 9 are arranged in groups from bow to stern, with multiple air quality sensors, tunnel fans, and wind speed sensors in each group of air quality sensors 10, tunnel fans 8, and wind speed sensors spaced apart along the width of the vehicle compartment. The air quality sensors 10 are used to monitor and collect air quality data within the vehicle compartment. The wind speed sensors 9 are used to measure the speed of air movement within the vehicle compartment and calculate the actual number of air exchanges within the vehicle compartment. The external anemometer 11 obtains signals indicating the direction of the external natural wind.

[0021] The ventilation system control box also includes an air quality setting module 12, an air change rate setting module 13, a signal receiving module 14, and a PLC control module 15. The tunnel fan 8 is electrically connected to the PLC control module 15. The air quality setting module 12 is used to set the minimum air quality value in ship loading / unloading mode and ship navigation mode. The air change rate setting module 13 is used to set the minimum air change rate in ship loading / unloading mode and ship navigation mode. The signal receiving module 14 is communicatively connected to the external anemometer 11, wind speed sensor 9, air quality sensor 10, and PLC control module 15, and is used to receive air quality data monitored by the air quality sensor 10 and the signal received by the wind speed sensor 9. The system obtains the actual number of air changes, the external anemometer 11 signaling the direction of the external natural wind, and the opening and closing status signals of the bow and stern doors. The PLC control module 15 processes the signals to determine whether the ship is in loading / unloading mode or sailing mode, controls the running direction of the tunnel fan based on the angle between the wind direction and the ship's sailing direction, compares the air quality data with the minimum air quality value in the corresponding ship working mode, compares the actual number of air changes with the set minimum number of air changes in the working mode, and controls the number of tunnel fans to operate when the air quality data is lower than the minimum air quality value and / or when the actual number of air changes is less than the minimum number of air changes.

[0022] When the angle between the natural wind direction and the ship's direction is less than or equal to 90 degrees, the tunnel ventilation fan runs in the forward direction; when the angle between the natural wind direction and the ship's direction is greater than 90 degrees, the tunnel ventilation fan runs in the reverse direction.

[0023] Those skilled in the art should understand that the above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ventilation system for a ship's vehicle compartment utilizing natural wind, the vehicle compartment comprising a bow door, a stern door, a port bulkhead, and a starboard bulkhead, characterized in that, The ventilation system includes multiple bow louvers, multiple stern louvers, multiple tunnel fans, multiple air quality sensors, and a ventilation system control box. The bow louvers are located on the bulkhead of the vehicle compartment's bow door and are symmetrically distributed on both sides of the bow door. The stern louvers are located on the left and right bulkheads, respectively, on the side closest to the vehicle compartment's stern door. Multiple tunnel fans are fixed at intervals to the top of the vehicle compartment, and multiple air quality sensors are fixed at intervals to the left and right inner bulkheads of the vehicle compartment. The air quality sensors are used to monitor and collect air quality data within the vehicle compartment. The ventilation system control box includes an external anemometer, an air quality setting module, a signal receiving module, and a PLC control module. The tunnel fans are electrically connected to the PLC control module. The external anemometer obtains the direction of external natural wind. The air quality setting module is used to set the minimum air quality value for ship loading / unloading mode and ship navigation mode. The signal receiving module communicates with the external anemometer, air quality sensor and PLC control module to receive air quality data monitored by the air quality sensor, the signal of external natural wind direction obtained by the external anemometer and the opening and closing status signals of the bow and stern doors. The PLC control module processes the opening and closing status signals of the bow and stern doors to determine whether the ship is in ship loading / unloading mode or ship navigation mode, controls the running direction of the tunnel ventilation fan according to the angle between the wind direction and the ship's navigation direction, compares the air quality data with the minimum air quality value of the corresponding ship working mode, and controls the number of tunnel ventilation fans to operate when the air quality data is lower than the minimum air quality value.

2. A ship vehicle cabin ventilation system utilizing natural wind according to claim 1, characterized in that, The ventilation system also includes multiple sets of wind speed sensors, which are fixed at intervals on the roof of the vehicle compartment. The ventilation system control box also includes an air change rate setting module, used to set the minimum air change rate in ship loading / unloading mode and ship navigation mode. The wind speed sensors are communicatively connected to the signal receiving module. The wind speed sensors are used to measure the speed of air movement in the vehicle compartment and calculate the actual air change rate in the vehicle compartment. The signal receiving module receives the actual air change rate output by the wind speed sensors. The PLC control module processes and compares the actual air change rate with the set minimum air change rate in the determined ship working mode. When the actual air change rate is less than the minimum air change rate, the PLC control module controls the number of tunnel fans in operation.

3. A ship vehicle cabin ventilation system utilizing natural wind according to claim 2, characterized in that, When the angle between the natural wind direction and the ship's direction is less than or equal to 90 degrees, the tunnel ventilation fan runs in the forward direction; when the angle between the natural wind direction and the ship's direction is greater than 90 degrees, the tunnel ventilation fan runs in the reverse direction.

4. A ship vehicle cabin ventilation system utilizing natural wind according to claim 3, characterized in that, The air quality sensors, tunnel fans, and wind speed sensors are arranged in groups from the bow to the stern, with multiple air quality sensors, tunnel fans, and wind speed sensors in each group arranged at intervals along the width of the vehicle compartment.

5. A ship vehicle cabin ventilation system utilizing natural wind according to claim 4, characterized in that, Baffles are fixedly covered on the outer side of the strong structure of the left bulkhead, right bulkhead and top bulkhead of the vehicle compartment.

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