A marine internal cooling air dehumidification system and method

Abstract

The present invention belongs to the technical field of marine air dehumidification, specifically relating to a marine internally cooled air dehumidification system and method utilizing ship waste heat regeneration and freshwater cooling. The system primarily comprises an adsorption dehumidification heat exchanger, a freshwater pump, a three-way ventilation valve, a heat exchanger, and a fan. The system utilizes a programmable logic controller (PLC) to control the start and stop of the water pump and fan, adjust the opening of the air valve, and automatically adjust the switching time between adsorption dehumidification and desorption regeneration, depending on the ship's operating environment. The system utilizes the adsorption heat released during the dehumidification process of freshwater adsorbents in the ship's central cooling system to achieve near-isothermal dehumidification and improve dehumidification efficiency. The ship's high-temperature exhaust gas is then used to heat the regenerated air, enabling waste heat reuse. The present invention offers the advantages of safety, reliability, low operating costs, energy conservation, and environmental protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of marine air dehumidification, and in particular relates to an internally cooled air dehumidification system and method utilizing ship waste heat regeneration and fresh water cooling. Background Art

[0002] Ships, as crucial cargo transport vehicles in world trade, carry approximately 90% of global cargo volume. Ships navigate vast territories, and external climatic conditions vary significantly across seasons and sea areas. During the hot summer months, the relative humidity of sea-surface air typically ranges from 70% to 80%, sometimes even reaching 100%. According to the GB / T 13409-92 standard for air conditioning in ship accommodation spaces, conventional compression refrigeration and air conditioning using condensation dehumidification require significant cooling load and electricity consumption to reduce the air's moisture content. Solid adsorption dehumidification utilizes an adsorbent to physically adsorb water molecules from humid air. Rotary and fixed types are the most commonly used. Rotary dehumidification systems are generally bulky due to their continuous operation, but they require significant space, consume high energy, and are significantly impacted by environmental factors. However, in fixed adsorption dehumidification, the release of adsorption heat leads to an increase in the equilibrium adsorption temperature between the adsorbent and the treated air. While the adsorbent's hygroscopic performance decreases, the heat and moisture transfer potential difference between dehumidification and regeneration increases. The regeneration temperature required for the cycle increases, and the overall cycle performance is difficult to improve.

[0003] It should be noted that this part of the present invention only provides background technology related to the present invention and does not necessarily constitute prior art or public known technology. Summary of the Invention

[0004] The purpose of the present invention is to provide a marine internal cooling air dehumidification system and method to overcome the problem that the existing marine air dehumidification system cannot realize the switching between dehumidification and regeneration when using solid adsorption dehumidification.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present invention provides a marine internal cooling air dehumidification system, comprising:

[0006] A main air inlet pipeline is connected to the air inlet of the cabin compartment, and a first three-ventilation valve, a first adsorption dehumidification heat exchanger, and a fresh air blower are sequentially arranged on the main air inlet pipeline along the air inlet path; the first adsorption dehumidification heat exchanger is used to dehumidify the gas in the main air inlet pipeline;

[0007] A main exhaust duct is connected to the exhaust port of the cabin compartment. A heat exchanger, a second ventilation valve, a second adsorption dehumidification heat exchanger, and a regeneration air blower are sequentially arranged along the exhaust path of the main exhaust duct. Part of the high-temperature exhaust gas generated by the combustion of fuel in the ship's main / auxiliary engines is introduced into the pipe of the heat exchanger to heat the regeneration air in the main exhaust duct. The second adsorption dehumidification heat exchanger is used to dehumidify the gas in the main exhaust duct.

[0008] a fresh water heat exchange module, the fresh water heat exchange module being connected to the heat exchange channels of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger, respectively, and being configured to perform heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger and the solid adsorbent in the second adsorption dehumidification heat exchanger;

[0009] A control module, wherein the control module is electrically connected to the first three ventilation valves, the fresh air fan, the second three ventilation valves, the regeneration air fan and the fresh water heat exchange module, and is used to control the fresh water heat exchange module to perform heat exchange with the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger respectively.

[0010] Optionally, the marine internal cooling air dehumidification system further includes: a third ventilation valve, a first branch air inlet duct, a second branch air inlet duct, a first branch exhaust duct and a second branch exhaust duct; the third ventilation valve is arranged on the main exhaust duct between the regeneration air fan and the second adsorption dehumidification heat exchanger; one end of the first branch air inlet duct is connected to the bypass interface of the first ventilation valve, and the other end is connected to the main exhaust duct between the third ventilation valve and the second adsorption dehumidification heat exchanger; one end of the second branch air inlet duct is connected to the bypass interface of the second ventilation valve, and the other end is connected to the main exhaust duct between the first adsorption dehumidification heat exchanger and the fresh air fan; the first branch exhaust duct One end of the pipeline is connected to the first adsorption dehumidification heat exchanger, and the other end is connected to the main exhaust duct between the second three-ventilation valve and the heat exchanger; one end of the second branch exhaust duct is connected to the bypass interface of the third three-ventilation valve, and the other end is connected to the first adsorption dehumidification heat exchanger; the control module is used to realize the conduction switching between the main pipeline and the branch pipeline by controlling the opening or closing of the bypass interfaces of the first three-ventilation valve, the second three-ventilation valve and the third three-ventilation valve; wherein, the main pipeline includes a circulation pipeline formed by the main air inlet pipeline and the main exhaust pipeline, and the branch pipeline includes a circulation pipeline formed by the first branch air inlet pipeline, the second branch air inlet pipeline, the first branch exhaust pipeline and the second branch exhaust pipeline.

[0011] Optionally, the marine internal cooling air dehumidification system further includes: an air valve; the air valve is arranged on the first branch exhaust duct, and the control module is electrically connected to the air valve for controlling the air volume of the discharged regeneration air.

[0012] Optionally, the fresh water heat exchange module includes: a fresh water inlet pipeline, a fresh water discharge pipeline, a first inlet branch pipeline, a first discharge branch pipeline, a second inlet branch pipeline, a second discharge branch pipeline and a fresh water pump; the fresh water pump is arranged in the fresh water inlet pipeline, one end of the first inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the first adsorption dehumidification heat exchanger; one end of the first discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the first adsorption dehumidification heat exchanger; one end of the second inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the second adsorption dehumidification heat exchanger; one end of the second discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the second adsorption dehumidification heat exchanger.

[0013] Optionally, the marine internal cooling air dehumidification system further comprises: a first solenoid valve and a second solenoid valve; the first solenoid valve is arranged on the first liquid inlet branch pipeline, and the second solenoid valve is arranged on the second liquid inlet branch pipeline;

[0014] The control module is electrically connected to the fresh water pump, the first solenoid valve and the second solenoid valve respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger.

[0015] Optionally, the control module adopts a PLC controller.

[0016] Optionally, the marine internal cooling air dehumidification system further includes: a filter; the filter is arranged at one end of the main air inlet duct close to the inlet, and is used to filter the fresh air entering the main air inlet duct.

[0017] In a second aspect, an embodiment of the present invention further provides a method for dehumidifying marine internally cooled air. Based on the marine internally cooled air dehumidification system according to the first aspect, the dehumidification method comprises the following steps:

[0018] S1, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed;

[0019] S2, starting the fresh water pump and the first solenoid valve to deliver fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve;

[0020] S3, start the fresh air fan and the regeneration air fan, the outdoor fresh air passes through the first three-way ventilation valve and flows through the first adsorption dehumidification heat exchanger, after being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan;

[0021] S4, using a heat exchanger to heat the regeneration air coming from the cabin;

[0022] S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

[0023] Optionally, after step S5, the method further includes:

[0024] S6, after running for a preset time, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve, and the third three-way ventilation valve to be opened;

[0025] S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released during the adsorption process of the adsorbent;

[0026] S8, outdoor fresh air flows through the bypass port of the first three-ventilation valve and enters the second adsorption dehumidification heat exchanger. After adsorption and dehumidification, it passes through the bypass port of the second three-ventilation valve and is then sent into the cabin through the fresh air fan;

[0027] S9, using a heat exchanger to heat the regeneration air coming from the cabin;

[0028] S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

[0029] The embodiments of the present invention have at least the following technical effects:

[0030] The ship-use internal cooling air dehumidification system and method provided by the embodiment of the present invention utilizes the waste heat generated by the ship to heat the regeneration air for the regeneration of the adsorbent, thereby realizing partial recycling of the ship's waste heat and saving energy and being environmentally friendly; at the same time, the low-temperature fresh water in the ship's central cooling system is used to cool the adsorbent, and the adsorption heat released by the adsorbent is taken away in real time, overcoming the shortcomings of the traditional solid adsorption dehumidification method of heating and dehumidification, realizing approximate isothermal dehumidification, and improving the dehumidification effect of the adsorbent; in addition, the system can also automatically adjust the switching time of the pipeline, the start and stop of the three-way ventilation valve and the solenoid valve, and the opening of the regulating air valve according to the collected temperature and humidity data, so as to intermittently cool and regenerate the adsorbent to achieve a continuous supply of suitable humidified fresh air required for the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the system principle of a marine internal cooling air dehumidification system provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a marine internal cooling air dehumidification system in a first operating state provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of a marine internal cooling air dehumidification system in a second operating state provided by an embodiment of the present invention;

[0035] Figure 4 The present invention provides a flow chart of a method for dehumidifying marine internally cooled air.

[0036] Reference numerals:

[0037] 1-Filter; 2-First three-way ventilation valve; 3-First solenoid valve; 4-First adsorption dehumidification heat exchanger; 5-Fresh air fan; 6-Cabin; 7-Regeneration air fan; 8-Fresh water pump; 9-Second solenoid valve; 10-Second adsorption dehumidification heat exchanger; 11-Second three-way ventilation valve; 12-Heat exchanger; 13-Air valve; 14-Third three-way ventilation valve; 15-Control module; 100-Main air inlet pipeline; 200-Main exhaust pipeline; 300-Fresh water heat exchange module; 310-Fresh water inlet pipeline; 320-Fresh water discharge pipeline; 330-First liquid inlet branch pipeline; 340-First liquid discharge branch pipeline; 350-Second liquid inlet branch pipeline; 360-Second liquid discharge branch pipeline; 400-First branch air inlet pipeline; 500-Second branch air inlet pipeline; 600-First branch exhaust pipeline; 700-Second branch exhaust pipeline. DETAILED DESCRIPTION

[0038] The technical solutions of the present invention are described clearly and completely below with reference to the embodiments. It is obvious that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0039] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless specifically defined as such, will not be interpreted in an idealized or overly formal sense.

[0040] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a," "an," "said," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0041] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] like Figure 1 As shown, an embodiment of the present invention provides a marine internal cooling air dehumidification system, comprising: a main air inlet duct 100, a main exhaust duct 200, a fresh water heat exchange module 300 and a control module 15. The main air inlet duct 100 is used to be connected to the air inlet of the cabin compartment 6. The main air inlet duct 100 is provided with a first three-ventilation valve 2, a first adsorption dehumidification heat exchanger 4 and a fresh air fan 5 in sequence along the air inlet path; the first adsorption dehumidification heat exchanger 4 is used to dehumidify the gas in the main air inlet duct 100.

[0044] The main exhaust duct 200 is used to be connected to the exhaust port of the cabin compartment 6. A heat exchanger 12, a second third ventilation valve 11, a second adsorption dehumidification heat exchanger 10 and a regeneration air fan 7 are sequentially arranged on the main exhaust duct 200 along the exhaust path; part of the high-temperature exhaust gas generated by the combustion of the main / auxiliary engine fuel of the ship is introduced into the pipe of the heat exchanger 12 to heat the regeneration air in the main exhaust duct 200; the second adsorption dehumidification heat exchanger 10 is used to dehumidify the gas in the main exhaust duct 200.

[0045] The fresh water heat exchange module 300 is connected to the heat exchange channels of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 respectively, and is used for heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger 4 and the solid adsorbent in the second adsorption dehumidification heat exchanger 10.

[0046] The control module 15 is electrically connected to the first three ventilation valves 2, the fresh air fan 5, the second three ventilation valves 11, the regeneration air fan 7 and the fresh water heat exchange module 300, respectively, and is used to control the fresh water heat exchange module 300 to perform heat exchange with the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10, respectively, thereby achieving dehumidification of the fresh air and resetting the adsorbent using the regeneration air.

[0047] In some embodiments, the marine internal cooling air dehumidification system further includes: a third ventilation valve 14 , a first branch air inlet duct 400 , a second branch air inlet duct 500 , a first branch air exhaust duct 600 , and a second branch air exhaust duct 700 .

[0048] Specifically, the third ventilation valve 14 is arranged on the main exhaust duct 200 between the regeneration air fan 7 and the second adsorption dehumidification heat exchanger 10; one end of the first branch air inlet duct 400 is connected to the bypass interface of the first ventilation valve 2, and the other end is connected to the main exhaust duct 200 between the third ventilation valve 14 and the second adsorption dehumidification heat exchanger 10; one end of the second branch air inlet duct 500 is connected to the bypass interface of the second ventilation valve 11, and the other end is connected to the main air inlet duct 100 between the first adsorption dehumidification heat exchanger 4 and the fresh air fan 5.

[0049] One end of the first branch exhaust pipe 600 is connected to the first adsorption dehumidification heat exchanger 4, and the other end is connected to the main exhaust pipe 200 between the second third ventilation valve 11 and the heat exchanger 12; one end of the second branch exhaust pipe 700 is connected to the bypass interface of the third third ventilation valve 14, and the other end is connected to the first adsorption dehumidification heat exchanger 4.

[0050] The control module 15 is used to realize the switching between the main line and the branch line by controlling the opening or closing of the bypass interface (corresponding to the c end of the valve) of the first three ventilation valves 2, the second three ventilation valves 11 and the third three ventilation valves 14. Among them, the main line includes a circulation line formed by the main air inlet line 100 and the main exhaust line 200, and the branch line includes a circulation line formed by the first branch air inlet line 400, the second branch air inlet line 500, the first branch exhaust line 600 and the second branch exhaust line 700. It should be noted that in the embodiment of the present invention, the first three ventilation valves 2, the second three ventilation valves 11 and the third three ventilation valves 14 are defaulted to be connected between end a and end b. When the bypass interface is opened, end a and end c are connected, and end b is closed.

[0051] In some embodiments, in order to facilitate the control of air volume and the change of circulation pipelines, the marine internal cooling air dehumidification system also includes: an air valve 13; the air valve 13 is arranged on the first branch exhaust pipeline 600, and the control module 15 is electrically connected to the air valve 13, which is used to control the air volume of the discharged regeneration air and control the start or close of the first branch exhaust pipeline 600.

[0052] In some embodiments, continue to refer to Figure 1 The fresh water heat exchange module 300 includes: a fresh water inlet pipeline 310, a fresh water discharge pipeline 320, a first inlet branch pipeline 330, a first discharge branch pipeline 340, a second inlet branch pipeline 350, a second discharge branch pipeline 360 ​​and a fresh water pump 8;

[0053] The fresh water pump 8 is arranged in the fresh water inlet pipeline 310, one end of the first inlet branch pipeline 330 is connected to the fresh water inlet pipeline 310, and the other end is connected to the heat exchange channel inlet of the first adsorption dehumidification heat exchanger 4; one end of the first discharge branch pipeline 340 is connected to the fresh water discharge pipeline 320, and the other end is connected to the heat exchange channel outlet of the first adsorption dehumidification heat exchanger 4.

[0054] One end of the second liquid inlet branch pipeline 350 is connected to the fresh water inlet pipeline 310, and the other end is connected to the heat exchange channel inlet of the second adsorption dehumidification heat exchanger 10; one end of the second liquid discharge branch pipeline 360 ​​is connected to the fresh water discharge pipeline 320, and the other end is connected to the heat exchange channel outlet of the second adsorption dehumidification heat exchanger 10.

[0055] In some embodiments, the marine internal cooling air dehumidification system further includes: a first solenoid valve 3 and a second solenoid valve 9 ; the first solenoid valve 3 is arranged on the first liquid inlet branch pipeline 330 , and the second solenoid valve 9 is arranged on the second liquid inlet branch pipeline 350 .

[0056] The control module 15 is electrically connected to the fresh water pump 8, the first solenoid valve 3 and the second solenoid valve 9 respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three-ventilation valve 2, the second three-ventilation valve 11 and the third three-ventilation valve 14 to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10.

[0057] Optionally, the control module 15 adopts a PLC controller, which is used to control various valves, pumps and other components.

[0058] Optionally, in order to prevent impurities in the fresh air flow from entering the cabin 6 and affecting the air quality, the marine internal cooling air dehumidification system also includes: a filter 1; the filter 1 is arranged at one end of the main air inlet duct 100 near the inlet, and is used to filter the fresh air entering the main air inlet duct 100.

[0059] Based on the same inventive concept, Figure 4 As shown, an embodiment of the present invention further provides a method for dehumidifying marine internal cooling air. Based on the marine internal cooling air dehumidification system in the aforementioned embodiment, the dehumidification method includes the following steps:

[0060] S1, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed.

[0061] S2, starting the fresh water pump and the first solenoid valve to send the fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve.

[0062] S3, start the fresh air fan and the regeneration air fan, and the outdoor fresh air flows through the first adsorption dehumidification heat exchanger through the first three-way ventilation valve. After being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan.

[0063] S4, using a heat exchanger to heat the regeneration air coming from the cabin.

[0064] S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

[0065] Optionally, continue to Figure 4 , after step S5, further comprising:

[0066] S6, after running for a preset time, control the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be opened.

[0067] S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released during the adsorption process of the adsorbent.

[0068] S8, control the outdoor fresh air to flow through the bypass interface of the first three-ventilation valve, enter the second adsorption dehumidification heat exchanger, and after adsorption dehumidification, pass through the bypass interface of the second three-ventilation valve and then be sent into the cabin through the fresh air fan;

[0069] S9, using a heat exchanger to heat the regeneration air coming from the cabin.

[0070] S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

[0071] The ship-use internal cooling air dehumidification system and method provided by the embodiment of the present invention utilizes the waste heat generated by the ship to heat the regeneration air for the regeneration of the adsorbent, thereby realizing partial recycling of the ship's waste heat and saving energy and being environmentally friendly; at the same time, the low-temperature fresh water in the ship's central cooling system is used to cool the adsorbent, and the adsorption heat released by the adsorbent is taken away in real time, overcoming the shortcomings of the traditional solid adsorption dehumidification method of heating and dehumidification, realizing approximate isothermal dehumidification, and improving the dehumidification effect of the adsorbent; in addition, the system can also automatically adjust the switching time of the pipeline, the start and stop of the three-way ventilation valve and the solenoid valve, and the opening of the regulating air valve according to the collected temperature and humidity data, so as to intermittently cool and regenerate the adsorbent to achieve a continuous supply of suitable humidified fresh air required for the cabin.

[0072] In a specific embodiment, the PLC controller sets the cycle switching time T between dehumidification and regeneration based on the data collected from the temperature and humidity sensors, and controls the opening of the relevant air valves, and the start and stop of the fresh water pump and the fan.

[0073] like Figure 1 As shown, the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 are both fin-tube heat exchangers, with solid adsorbent coated on the fins. The cooling medium flows in the tubes and takes away the adsorption heat generated by the adsorbent adsorption process, so as to achieve the purpose of maintaining low temperature and improving the dehumidification effect.

[0074] On the air duct side: End a of the first three-way ventilation valve 2 communicates with the filter 1 via the fresh air pipeline, while end b connects to the first adsorption dehumidification heat exchanger 4. End c of the first three-way ventilation valve is connected to the second adsorption dehumidification heat exchanger 10 and end b of the third three-way ventilation valve 14. The right end of the first adsorption dehumidification heat exchanger 4 is connected to the fresh air blower 5, whose outlet is connected to the cabin. The right end of the second adsorption dehumidification heat exchanger 10 is connected to end a of the second three-way ventilation valve, while end b of the second three-way ventilation valve is connected to the heat exchanger 12. End c of the second three-way ventilation valve communicates with the first adsorption dehumidification heat exchanger 4 and the fresh air blower 5. The lower end of the air valve 13 communicates with the left end of the heat exchanger 12 and end b of the second three-way ventilation valve 11, while the upper end connects to the first adsorption dehumidification heat exchanger 4. The right end of the heat exchanger 12 communicates with the cabin. The heat exchanger 12 introduces a portion of the high-temperature exhaust gas generated by the combustion of fuel from the ship's main and auxiliary engines. End a of the third ventilation valve 14 is connected to the inlet of the regeneration air blower, end b is connected to the left end of the second adsorption dehumidification heat exchanger 10, and end c is connected to the left end of the first adsorption dehumidification heat exchanger 4.

[0075] Cooling medium side: The outlet of the freshwater pump 8 is connected to the left side of the first solenoid valve 3 and the left side of the second solenoid valve 9. The right side of the first solenoid valve 3 is connected to the water pipe in the first adsorption dehumidification heat exchanger 4. The right side of the second solenoid valve 9 is connected to the left water pipe of the second adsorption dehumidification heat exchanger 10. The water pipe outlets of the first adsorption dehumidification heat exchanger 4 and the second adsorption dehumidification heat exchanger 10 are connected, forming the cooling water outlet.

[0076] The specific working principle of the above-mentioned marine internal cooling air dehumidification system is as follows:

[0077] Initial stage (first operating state), such as Figure 2As shown, the PLC opens terminals a and b of the first three-way ventilation valve 2, terminals a and b of the second three-way ventilation valve 11, and terminals a and b of the third three-way ventilation valve 14. It then opens the first solenoid valve 3, closes terminals c of the first three-way ventilation valve 2, the second three-way ventilation valve 11, and the third three-way ventilation valve 14, and closes the second solenoid valve 9. The fresh water pump 8 is activated, delivering fresh water through the first solenoid valve 3 to the cooling water pipe of the first adsorption dehumidification heat exchanger 4. The fresh air blower 5 and the regeneration air blower 7 are activated. After being filtered by the filter 1, the outdoor fresh air flows into terminal a of the first three-way ventilation valve 2, exits through terminal b, and, after being dehumidified by the adsorbent attached to the fins, is drawn into the fresh air blower and delivered to the cabin. On the regeneration air side, since the indoor air has a lower moisture content and water vapor partial pressure than the outdoor fresh air, it serves as regeneration air, facilitating the regeneration process and flowing outside the heat exchanger 12. Part of the exhaust gas discharged by the main / auxiliary engine of the ship is introduced into the pipe of the heat exchanger 12 to heat the regeneration air coming from the cabin. The heated high-temperature and low-humidity air flows through the b and a ends of the second three-ventilation valve and enters the second adsorption dehumidification heat exchanger 10 to heat and regenerate the adsorbent on the fins and take away the desorbed water vapor. It then flows through the b and a ends of the third three-ventilation valve 14, and the high-temperature and high-humidity regeneration air is discharged through the regeneration air fan 7.

[0078] After running for T time, if Figure 3 As shown, the adsorption and regeneration processes of the first and second adsorption dehumidification heat exchangers are switched (second operating state). The PLC activates terminals a and c of the first three-way ventilation valve 2, terminals a and c of the second three-way ventilation valve 10, and terminals a and c of the third three-way ventilation valve 14. Terminals b of the first three-way ventilation valve, the second three-way ventilation valve, and the third three-way ventilation valve 14 are closed. The first solenoid valve 3 is closed, and the second solenoid valve 9 and air valve 13 are opened. Cooling fresh water is pumped into the pipes of the second dehumidification heat exchanger 10 by the fresh water pump 8, cooling the adsorbent on the fins and absorbing the heat of adsorption released during the adsorption process. Fresh air is filtered by the filter 1, flows through terminals a and c of the first three-way ventilation valve, enters the second adsorption dehumidification heat exchanger 10, and after adsorption and dehumidification, enters terminals a and c of the second three-way ventilation valve 11. It is then delivered to the cabin by the fresh air blower. The regeneration air heated by the exhaust gas of the main / auxiliary engine of the ship flows into the first dehumidification heat exchanger 4 through the air valve 13, and heats and regenerates the adsorbent on the fins after absorbing moisture. The regeneration air after absorbing moisture passes through the c and a ends of the third ventilation valve 14 and is discharged through the regeneration air fan 7.

[0079] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. A person of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of this specification, specific features, structures, materials, or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A marine internal cooling air dehumidification system, characterized in that: include: A main air inlet pipeline is connected to the air inlet of the cabin compartment, and a first three-ventilation valve, a first adsorption dehumidification heat exchanger, and a fresh air blower are sequentially arranged on the main air inlet pipeline along the air inlet path; the first adsorption dehumidification heat exchanger is used to dehumidify the gas in the main air inlet pipeline; A main exhaust duct is connected to the exhaust port of the cabin compartment. A heat exchanger, a second ventilation valve, a second adsorption dehumidification heat exchanger, and a regeneration air fan are sequentially arranged along the exhaust path of the main exhaust duct. Part of the high-temperature exhaust gas generated by the combustion of fuel in the ship's main / auxiliary engines is introduced into the pipe of the heat exchanger to heat the regeneration air in the main exhaust duct. The second adsorption dehumidification heat exchanger is used to dehumidify the gas in the main exhaust duct. a fresh water heat exchange module, the fresh water heat exchange module being connected to the heat exchange channels of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger, respectively, and being configured to perform heat exchange with the solid adsorbent in the first adsorption dehumidification heat exchanger and the solid adsorbent in the second adsorption dehumidification heat exchanger; A control module, wherein the control module is electrically connected to the first three ventilation valves, the fresh air fan, the second three ventilation valves, the regeneration air fan and the fresh water heat exchange module, and is used to control the fresh water heat exchange module to perform heat exchange with the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger respectively.

2. The marine internal cooling air dehumidification system according to claim 1, characterized in that: Also includes: 33 ventilation valve, first branch air inlet pipeline, second branch air inlet pipeline, first branch exhaust pipeline and second branch exhaust pipeline; The third ventilation valve is arranged on the main exhaust duct between the regeneration air fan and the second adsorption dehumidification heat exchanger; one end of the first branch air inlet duct is connected to the bypass interface of the first ventilation valve, and the other end is connected to the main exhaust duct between the third ventilation valve and the second adsorption dehumidification heat exchanger; one end of the second branch air inlet duct is connected to the bypass interface of the second ventilation valve, and the other end is connected to the main air inlet duct between the first adsorption dehumidification heat exchanger and the fresh air fan; One end of the first branch exhaust pipeline is connected to the first adsorption dehumidification heat exchanger, and the other end is connected to the main exhaust pipeline between the second three-ventilation valve and the heat exchanger; one end of the second branch exhaust pipeline is connected to the bypass interface of the third three-ventilation valve, and the other end is connected to the first adsorption dehumidification heat exchanger; The control module is used to realize the conduction switching between the main line and the branch line by controlling the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves; wherein, the main line includes a circulation line formed by the main air inlet line and the main exhaust line, and the branch line includes a circulation line formed by the first branch air inlet line, the second branch air inlet line, the first branch exhaust line and the second branch exhaust line.

3. The marine internal cooling air dehumidification system according to claim 2, characterized in that: Also includes: air valve; The air valve is arranged on the first branch exhaust duct, and the control module is electrically connected to the air valve for controlling the air volume of the discharged regeneration air.

4. The marine internal cooling air dehumidification system according to claim 3, characterized in that: The fresh water heat exchange module includes: a fresh water inlet pipeline, a fresh water discharge pipeline, a first inlet branch pipeline, a first discharge branch pipeline, a second inlet branch pipeline, a second discharge branch pipeline and a fresh water pump; The fresh water pump is arranged in the fresh water inlet pipeline, one end of the first liquid inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the first adsorption dehumidification heat exchanger; one end of the first liquid discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the first adsorption dehumidification heat exchanger; One end of the second liquid inlet branch pipeline is connected to the fresh water inlet pipeline, and the other end is connected to the heat exchange channel inlet of the second adsorption dehumidification heat exchanger; one end of the second liquid discharge branch pipeline is connected to the fresh water discharge pipeline, and the other end is connected to the heat exchange channel outlet of the second adsorption dehumidification heat exchanger.

5. The marine internal cooling air dehumidification system according to claim 4, characterized in that: Also includes: a first solenoid valve and a second solenoid valve; the first solenoid valve is arranged on the first liquid inlet branch pipeline, and the second solenoid valve is arranged on the second liquid inlet branch pipeline; The control module is electrically connected to the fresh water pump, the first solenoid valve and the second solenoid valve respectively, and is used to cooperate with the opening or closing of the bypass interfaces of the first three ventilation valves, the second three ventilation valves and the third three ventilation valves to realize the adsorption and regeneration switching of the first adsorption dehumidification heat exchanger and the second adsorption dehumidification heat exchanger.

6. The marine internal cooling air dehumidification system according to claim 1, characterized in that: The control module adopts a PLC controller.

7. The marine internal cooling air dehumidification system according to claim 1, characterized in that: Also includes: Filter; the filter is arranged at one end of the main air inlet duct near the inlet, and is used to filter the fresh air entering the main air inlet duct.

8. A method for dehumidifying marine internal cooling air, characterized in that: Based on the marine internal cooling air dehumidification system according to claim 5, the dehumidification method comprises the following steps: S1, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve and the third three-way ventilation valve to be closed; S2, starting the fresh water pump and the first solenoid valve to deliver fresh water into the cooling water pipe of the first adsorption dehumidification heat exchanger through the first solenoid valve; S3, start the fresh air fan and the regeneration air fan, the outdoor fresh air passes through the first three-way ventilation valve and flows through the first adsorption dehumidification heat exchanger, after being adsorbed and dehumidified by the adsorbent on the fins, it is sucked into the cabin by the fresh air fan; S4, using a heat exchanger to heat the regeneration air coming from the cabin; S5, the heated high-temperature and low-humidity air flows through the second adsorption dehumidification heat exchanger through the second three-ventilation valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows through the third three-ventilation valve and is discharged through the regeneration air fan.

9. The marine internal cooling air dehumidification method according to claim 8, characterized in that: After step S5, the method further includes: S6, after running for a preset time, controlling the bypass interfaces of the first three-way ventilation valve, the second three-way ventilation valve, and the third three-way ventilation valve to be opened; S7, close the first solenoid valve and open the second solenoid valve and the air valve, and the cooling fresh water is pumped into the tube of the second dehumidification heat exchanger by the fresh water pump to cool the adsorbent on the fins and absorb the adsorption heat released during the adsorption process of the adsorbent; S8, outdoor fresh air flows through the bypass port of the first three-ventilation valve and enters the second adsorption dehumidification heat exchanger. After adsorption and dehumidification, it passes through the bypass port of the second three-ventilation valve and is then sent into the cabin through the fresh air fan; S9, using a heat exchanger to heat the regeneration air coming from the cabin; S10, the heated high-temperature and low-humidity air flows through the first adsorption dehumidification heat exchanger through the air valve, heats and regenerates the adsorbent on the fins, takes away the desorbed water vapor, and then flows into the main exhaust duct from the bypass interface of the third ventilation valve and is discharged through the regeneration air fan.

Images