Marine distributed air conditioning system and air supply method

Abstract

The invention relates to a marine distributed air conditioning system which is composed of a fresh air conditioner, a distributed air conditioner, a variable air volume terminal device and a cabin temperature controller. After the fresh air conditioner processes fresh air outside the cabins, the fresh air is sent to the distributed air conditioners in all the areas, the processed cabin return air and the fresh air are mixed through the distributed air conditioners and then sent to all the cabins, and the opening degree of the variable air volume tail end is changed through the cabin temperature controllers in the cabins to adjust the air supply volume so as to achieve independent regulation and control over the temperatures of all the cabins. Only one to two fresh air conditioners can be arranged in one area, and the distributed air conditioners can be flexibly arranged in an outer aisle of a cabin or other equipment cabins, so that the independent temperature regulation and control capability of the cabin is improved and the noise of the cabin is reduced under the condition of reducing the occupation of total space resources.

Description

Technical Field

[0001] The present invention relates to the technical field of ship air conditioning, and in particular to a distributed ship air conditioning system and an air supply method. Background Art

[0002] Marine air conditioning system is an important system for controlling the temperature and humidity of the ship cabin environment, and is widely used in cruise ships, passenger ships, and military ships. At present, most marine air conditioning systems use full air centralized air conditioning systems or semi-centralized air conditioning systems.

[0003] The centralized air conditioning system requires the installation of multiple independent air conditioning rooms near the work and living areas of the personnel. The air conditioners process the fresh air outside the cabin and the return air inside the cabin and then deliver them to the work and living cabins. Generally, a constant air volume air conditioning form is adopted. The air supply volume of the cabin supplied by the same air conditioner is fixed and unchanged. The load changes of each cabin in the air-conditioned area are adapted only by the change of the air supply temperature of the air conditioner. Since the air supply temperature of the air-conditioned area is the same, and the load change rate of each cabin cannot be guaranteed to be consistent, the temperature in each cabin cannot be controlled independently, resulting in the air conditioning system being unable to meet the temperature regulation needs of personnel with different activity levels, clothing levels and physical conditions. For large ships, in order to meet the environmental control needs of the entire cabin, multiple air conditioning rooms need to be installed in various areas of the ship. While increasing the overall space resource occupation, multiple air conditioning air inlets need to be installed on the outside of the hull, which affects the aesthetics of the ship. The principle of the centralized air conditioning system can be found in Figure 1 .

[0004] The semi-centralized air conditioning system sets up independent air conditioning rooms near the work and living areas of the personnel, and sets up fan coils inside each cabin. The air conditioner processes the fresh air outside the cabin and sends it to the fan coils in each cabin. The temperature of each cabin can be independently regulated by adjusting the cooling capacity of the fan coils. This method can achieve independent regulation of cabin temperature, but because the fan coils are arranged inside the cabin, the noise inside the cabin is relatively high. The principle of the semi-centralized air conditioning system is shown in Figure 2 .

[0005] Centralized air-conditioning systems cannot meet the temperature regulation requirements of different cabins within the same system and occupy more overall space resources. Semi-centralized air-conditioning systems are more difficult to control noise. The current ship air-conditioning systems are difficult to balance in terms of overall space resource occupancy, independent cabin temperature control and cabin noise control. Summary of the invention

[0006] Aiming at the technical problems that the current marine air-conditioning system is difficult to balance in terms of overall space resource occupation, independent control of cabin temperature and cabin noise control, a marine distributed air-conditioning system and air supply method are proposed.

[0007] The technical solution of the present invention is: a distributed air-conditioning system and air supply method for a ship, comprising a fresh air air-conditioner, a fresh air air-conditioner arranged in a fresh air air-conditioning room, the number of which is determined according to the area of ​​the ship's air-conditioning cabin; the distributed air-conditioner is arranged in the aisles or warehouses of the entire ship to reduce the occupation of the ship's space resources; one fresh air air-conditioner can form a distributed air-conditioning system with multiple distributed air-conditioners, an air duct is arranged between the fresh air air-conditioner and the distributed air-conditioner, and the fresh air processed by the fresh air air-conditioner is transported to the distributed air-conditioner; the distributed air-conditioner is connected to the terminal cabin through an air duct, and a variable air volume terminal device is arranged on the air duct between the distributed air-conditioner and the terminal cabin, and each terminal cabin is provided with a cabin temperature controller, which reduces the dedicated air-conditioning room while avoiding the influence of the air-conditioning equipment noise on the terminal cabin.

[0008] Preferably, the fresh air air conditioner is provided with a fan, and the fan of the fresh air air conditioner has a frequency conversion function, and the fresh air volume of the fresh air air conditioner is adjusted according to the fresh air demand of the distributed air conditioner.

[0009] Preferably, the distributed air conditioner is provided with a fan, and the fan of the distributed air conditioner has a frequency conversion function, and the air supply volume of the distributed air conditioner is adjusted according to the change of the air volume required by the terminal.

[0010] Applied to the air supply method of the marine distributed air-conditioning system, the fresh air air conditioner heats or cools the outdoor fresh air, and then delivers the fresh air to each distributed air conditioner in the same distributed air-conditioning system through the air duct. The distributed air conditioner is used to process the return air of the terminal cabin, and the return air after the heating or cooling treatment is mixed with the fresh air delivered by the fresh air air conditioner, and then the conditioned air is delivered to each terminal cabin through the air duct.

[0011] Furthermore, the fresh air air conditioner and the distributed air conditioner jointly regulate and control the fresh air volume. The fresh air is pressurized by the fresh air fan of the fresh air air conditioner and then sent to the distributed air conditioner. It passes through the fresh air valve and air volume measuring device of the distributed air conditioner in turn, and then is mixed with the return air and enters the supply air fan of the distributed air conditioner. Finally, it is pressurized by the supply air fan and sent to each terminal cabin.

[0012] Furthermore, the variable air volume terminal device adjusts the valve opening of the variable air volume terminal device according to the difference between the terminal cabin temperature setting value and the current actual temperature to adjust the air volume delivered to the terminal cabin, thereby realizing independent control of the temperature of each terminal cabin.

[0013] Furthermore, the distributed air conditioner calculates the required air volume of each distributed air conditioner according to the valve opening of each variable air volume terminal device, adjusts the fan frequency of the distributed air conditioner, changes the air supply volume of each terminal cabin, and realizes independent adjustment of the terminal cabin temperature.

[0014] Furthermore, the fresh air air conditioner is provided with a controller, which receives the required air volume from each distributed air conditioner in the same marine distributed air conditioning system, accumulates and sums the required fresh air volume, calculates the fan frequency of the fresh air air conditioner according to the total demand for fresh air volume, and corrects the fan frequency value of the fresh air air conditioner according to the valve position of the fresh air regulating valve of each distributed air conditioner transmitted by the distributed air conditioner controller, and finally adjusts the fan speed of the fresh air air conditioner to complete a control cycle.

[0015] Furthermore, the fresh air air conditioner only processes the fresh air load outside the cabin, cools the fresh air under summer conditions and heats the fresh air under winter conditions; the distributed air conditioner only bears the cabin return air load, and the return air processed by the distributed air conditioner is mixed with the fresh air and sent to the terminal cabin.

[0016] Furthermore, when the air volume of the distributed air conditioner changes, its fresh air volume remains unchanged, and the change of the supply air volume is achieved by changing the return air volume.

[0017] The beneficial effects of the present invention are as follows: a distributed air-conditioning system and air supply method for a ship of the present invention, by arranging centralized independent fresh air air conditioners in the air-conditioning area and arranging distributed air conditioners in walkways or other equipment cabins, reduces the requirement for the number of air-conditioning rooms and realizes the saving of overall space resources; by arranging distributed air conditioners with air volume adjustment capability, the air supply volume of the terminal cabin can be independently adjusted to realize independent regulation of the temperature of the terminal cabin; at the same time, since the distributed air conditioners are arranged outside the cabins in the air-conditioning area, the influence of equipment noise on the cabins in the air-conditioning area is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the schematic diagram of the centralized air conditioning system;

[0019] Figure 2 This is the schematic diagram of a semi-centralized air conditioning system;

[0020] Figure 3 This is a flow chart of the marine distributed air conditioning system of the present invention;

[0021] Figure 4 This is a schematic diagram of the distributed air conditioning system for ships of the present invention. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0023] refer to Figure 3 , 4As shown, the present invention provides a distributed air conditioning system for a ship, comprising a fresh air air conditioner, and a fresh air air conditioner arranged in a fresh air air conditioning room, wherein the number of fresh air air conditioning rooms is determined according to the area of ​​the ship's air-conditioned cabins; the distributed air conditioners are arranged in the walkways or warehouses of the entire ship to reduce the occupation of the ship's space resources; one fresh air air conditioner can form a distributed air conditioning system with a plurality of distributed air conditioners, and an air duct is arranged between the fresh air air conditioner and the distributed air conditioner to transport the fresh air processed by the fresh air air conditioner to the distributed air conditioner; the distributed air conditioner is connected to the terminal cabin through an air duct, and a variable air volume terminal device is arranged on the air duct between the distributed air conditioner and the terminal cabin, and each terminal cabin is provided with a cabin temperature controller. Through the above arrangement scheme, while reducing the dedicated air conditioning room, the influence of the air conditioning equipment noise on the terminal cabin is avoided;

[0024] The fresh air air conditioner is equipped with a fan, which has a frequency conversion function and can adjust the fresh air volume of the fresh air air conditioner according to the fresh air demand of the distributed air conditioner;

[0025] The distributed air conditioner is equipped with a fan, which has a frequency conversion function and can adjust the air supply volume of the distributed air conditioner according to the change of the air volume required by the terminal;

[0026] The air supply method applied to the marine distributed air conditioning system is as follows:

[0027] After the fresh air air conditioner heats or cools the outdoor fresh air, it sends the fresh air to each distributed air conditioner in the same distributed air conditioning system through the air duct. The distributed air conditioner is used to process the return air of the terminal cabin, mixes the return air after the heating or cooling process with the fresh air sent by the fresh air air conditioner, and then sends the conditioned air to each terminal cabin through the air duct;

[0028] The fresh air volume is controlled by the fresh air air conditioner and the distributed air conditioner. After being pressurized by the fresh air fan of the fresh air air conditioner, the fresh air is sent to the distributed air conditioner, passes through the fresh air valve and air volume measuring device of the distributed air conditioner in turn, and then mixed with the return air and enters the supply air fan of the distributed air conditioner. Finally, it is pressurized by the supply air fan and sent to each terminal cabin.

[0029] The variable air volume terminal device adjusts the valve opening of the variable air volume terminal device according to the difference between the terminal cabin temperature setting value and the current actual temperature to adjust the air volume sent to the terminal cabin, thereby realizing independent control of the temperature of each terminal cabin;

[0030] The distributed air conditioner calculates the required air volume of each distributed air conditioner according to the valve opening of each variable air volume terminal device, adjusts the fan frequency of the distributed air conditioner, changes the air supply volume of each terminal cabin, and realizes independent adjustment of the terminal cabin temperature;

[0031] The fresh air air conditioner is provided with a controller, which receives the required air volume from each distributed air conditioner in the same marine distributed air conditioning system, accumulates and sums the required fresh air volume, calculates the fan frequency of the fresh air air conditioner according to the total demand for fresh air volume, and corrects the fan frequency value of the fresh air air conditioner according to the valve position of the fresh air regulating valve of each distributed air conditioner transmitted by the distributed air conditioner controller, and finally adjusts the fan speed of the fresh air air conditioner to complete a control cycle;

[0032] The fresh air air conditioner only processes the fresh air load outside the cabin, cools the fresh air in summer and heats the fresh air in winter; the distributed air conditioner only bears the cabin return air load, and the return air processed by the distributed air conditioner is mixed with the fresh air and sent to the terminal cabin;

[0033] Since the fresh air of the distributed air conditioner comes from the fresh air air conditioner, when the air volume of the distributed air conditioner changes, its fresh air volume remains unchanged, and the change of the supply air volume is achieved by changing the return air volume;

[0034] like Figure 3 As shown in the figure, the marine distributed air conditioning system consists of one fresh air air conditioner, four distributed air conditioners, multiple variable air volume terminal devices and cabin temperature controllers; the total air volume of each distributed air conditioner is 4000m 3 / h, the fresh air ratio of the distributed air conditioner is 50%, and the maximum fresh air volume of the fresh air air conditioner should be 4000*50%*4=8000m 3 / h; The fan of the distributed air conditioner should be able to ensure that there is no return air operation when the fresh air volume remains unchanged, so the air supply volume of the distributed air conditioner should vary within the range of 2000~4000m 3 / h; The fan of the fresh air air conditioner should be able to ensure normal operation when only one distributed air conditioner is turned on, so the air supply volume of the fresh air air conditioner should vary within the range of 2000~8000m 3 / h; To ensure that the noise of the fresh air air conditioner and the distributed air conditioner does not affect the overall cabin noise, the maximum air volume of the fresh air air conditioner should not be greater than 12000m 3 / h, the maximum air volume of distributed air conditioners should not be greater than 6000m 3 / h;

[0035] In other examples of the present invention, one fresh air air conditioner can be matched with multiple distributed air conditioners, and the variable air volume terminal device and the cabin temperature controller are related to the number of terminal cabins; because it has the same technical effect as the above example, its specific implementation process will not be repeated.

[0036] The beneficial effects are as follows: the present invention reduces the requirement for the number of air-conditioning rooms by centrally setting up independent fresh air air conditioners in the air-conditioned area and setting up distributed air conditioners in aisles or other equipment compartments, thereby saving overall space resources; by setting up distributed air conditioners with air volume adjustment capabilities, the air supply volume of the terminal cabin can be independently adjusted to achieve independent control of the terminal cabin temperature; at the same time, since the distributed air conditioners are arranged outside the cabins in the air-conditioned area, the impact of equipment noise on the cabins in the air-conditioned area is effectively reduced.

[0037] It should be noted that the orientations or positional relationships indicated by the above-mentioned terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. "Multiple" means two or more. "Installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection.

[0038] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A distributed air conditioning system for a ship, characterized in that: It includes a fresh air air conditioner, and a fresh air air conditioner is arranged in a fresh air air conditioning room. The number of fresh air air conditioning rooms is determined according to the area of ​​the ship's air-conditioned cabins; distributed air conditioners are arranged in the aisles or warehouses of the entire ship to reduce the occupation of the ship's space resources; one fresh air air conditioner can form a distributed air-conditioning system with multiple distributed air conditioners, and an air duct is arranged between the fresh air air conditioner and the distributed air conditioner to transport the fresh air processed by the fresh air air conditioner to the distributed air conditioner; the distributed air conditioner is connected to the terminal cabin through an air duct, and a variable air volume terminal device is arranged on the air duct between the distributed air conditioner and the terminal cabin, and each terminal cabin is provided with a cabin temperature controller, which reduces the dedicated air-conditioning room while avoiding the impact of the air-conditioning equipment noise on the terminal cabin.

2. The marine distributed air conditioning system according to claim 1, characterized in that: The fresh air air conditioner is provided with a fan, and the fan of the fresh air air conditioner has a frequency conversion function, and the fresh air volume of the fresh air air conditioner is adjusted according to the fresh air demand of the distributed air conditioner.

3. The marine distributed air conditioning system according to claim 2, characterized in that: The distributed air conditioner is provided with a fan, and the fan of the distributed air conditioner has a frequency conversion function, and the air supply volume of the distributed air conditioner is adjusted according to the change of the air volume required by the terminal.

4. The air supply method applied to the distributed air conditioning system for a ship as claimed in claim 3, characterized in that: After the fresh air air conditioner heats or cools the outdoor fresh air, the fresh air is sent to each distributed air conditioner in the same distributed air conditioning system through the air duct. The distributed air conditioner is used to process the return air of the terminal cabin, and the return air after the heating or cooling treatment is mixed with the fresh air sent by the fresh air air conditioner, and then the conditioned air is sent to each terminal cabin through the air duct.

5. The air supply method of the marine distributed air conditioning system according to claim 4, characterized in that: The fresh air air conditioner and the distributed air conditioner jointly regulate and control the fresh air volume. The fresh air is pressurized by the fresh air fan of the fresh air air conditioner and then sent to the distributed air conditioner. It passes through the fresh air valve and air volume measuring device of the distributed air conditioner in turn, and then is mixed with the return air and enters the supply air fan of the distributed air conditioner. Finally, it is pressurized by the supply air fan and sent to each terminal cabin.

6. The air supply method of the marine distributed air conditioning system according to claim 5, characterized in that: The variable air volume terminal device adjusts the valve opening of the variable air volume terminal device according to the difference between the terminal cabin temperature setting value and the current actual temperature to adjust the air volume delivered to the terminal cabin, thereby realizing independent control of the temperature of each terminal cabin.

7. The air supply method of the marine distributed air conditioning system according to claim 6, characterized in that: The distributed air conditioner calculates the required air volume of each distributed air conditioner according to the valve opening of each variable air volume terminal device, adjusts the fan frequency of the distributed air conditioner, changes the air supply volume of each terminal cabin, and realizes independent adjustment of the terminal cabin temperature.

8. The air supply method of the marine distributed air conditioning system according to claim 7, characterized in that: The fresh air air conditioner is provided with a controller, which receives the required air volume from each distributed air conditioner in the same marine distributed air conditioning system, accumulates and sums the required fresh air volume, calculates the fan frequency of the fresh air air conditioner according to the total demand for fresh air volume, and corrects the fan frequency value of the fresh air air conditioner according to the valve position of the fresh air regulating valve of each distributed air conditioner transmitted by the distributed air conditioner controller, and finally adjusts the fan speed of the fresh air air conditioner to complete a control cycle.

9. The air supply method of the marine distributed air conditioning system according to claim 5, characterized in that: The fresh air air conditioner only processes the fresh air load outside the cabin, cools the fresh air under summer conditions and heats the fresh air under winter conditions; the distributed air conditioner only bears the cabin return air load, and the return air processed by the distributed air conditioner is mixed with the fresh air and sent to the terminal cabin.

10. The air supply method of the marine distributed air conditioning system according to claim 8, characterized in that: When the air volume of the distributed air conditioner changes, its fresh air volume remains unchanged, and the change of the supply air volume is achieved by changing the return air volume.

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