Air circulation engine room ventilation system and ship

Abstract

The embodiment of the present invention discloses a cabin ventilation system and a ship with air circulation, the system comprising: a first air supply duct, on which is provided an air supply fan provided into the cabin, and heats the main engine through an air supply cloth blower; a first exhaust duct, used to connect the exhaust fan and the exhaust fan and discharge the air that has been heated up after the heat dissipation is completed to the outside, the first exhaust duct is provided with an exhaust bypass downstream of the first exhaust fan in the exhaust direction, so as to send part of the exhaust air that has been heated up after the heat dissipation of the equipment to the turbocharger of the main engine through the air supply cloth blower; a second air supply duct, on which is provided an air supply fan that provides comfortable air to the incinerator room, and heats the air to the incinerator through the air supply cloth blower; the second exhaust duct, used to connect the exhaust fan and the exhaust fan and discharge the air that has been heated up after the heat dissipation is completed to the outside, the second exhaust duct is provided with an exhaust bypass downstream of the second exhaust fan along the exhaust direction, so as to send part of the exhaust air that has been heated up after the heat dissipation is completed to the incinerator through the air supply cloth blower.

Description

Technical Field

[0001] The invention relates to the technical field of ship engine room ventilation, in particular to an air recycling engine room ventilation system and a ship. Background Art

[0002] The engine room is the heart of the ship. In order to ensure the normal operation and efficient operation of the equipment in the engine room and the normal navigation of the ship, it is necessary to provide comfortable working conditions for the engine room, provide the necessary combustion air to the main engine and boiler, and introduce outdoor air to maintain suitable environmental conditions to ensure the operation of the power and auxiliary equipment in the engine room and the comfort of the staff; to meet these requirements, air should be distributed to all parts of the engine room to avoid the generation of stagnant hot air. The heat dissipation of power equipment and the comfort of the working area should be considered. In the mechanical area, fresh and clean outdoor air can be provided through the air intake device and the power device. After the air supply and equipment heat dissipation are completed, it is discharged outside the ship through the fan, which requires the ship to be equipped with a mechanical ventilation system; the general ship engine room mechanical ventilation system is used for equipment heat dissipation and equipment combustion air supply. It is equipped with a blower and a corresponding space exhaust fan respectively. However, due to the limited space in the engine room, the fan and the structural air duct occupy a large space. This type of mechanical ventilation method has a large demand for the number of equipment / mechanical layout space and power distribution. Summary of the invention

[0003] In view of the above-mentioned problems existing in the prior art, an embodiment of the present invention provides a cabin ventilation system and a ship with air recycling, which arranges an exhaust bypass on the exhaust duct so that the exhaust air for heat dissipation and cooling can be provided to the main engine or incinerator as combustion air. It can not only meet the required air volume for comfortable ventilation of the cabin to achieve equipment heat dissipation and create a comfortable environment, but also meet the air volume demand for combustion air of the equipment, reduce the total air volume of mechanical air supply in the cabin, reduce the size of the structural air duct, and can also reduce the specifications of the mechanical exhaust fan and the number of mechanical supply fans.

[0004] An embodiment of the present invention provides a cabin ventilation system for air recycling, comprising:

[0005] a first air supply duct, on which a first comfortable air blower is provided, for sucking comfortable outdoor air from outside the cabin into the cabin through the first air supply duct, and delivering the comfortable outdoor air to the main engine accessories through the first air supply blower to dissipate heat from the main engine, so as to maintain a normal equipment operation environment and a comfortable working environment for personnel;

[0006] a first exhaust duct, on which a first exhaust fan is provided, for sucking the air heated after the equipment has been cooled through the first exhaust fan, and discharging it outside the cabin through the first exhaust duct, wherein the first exhaust duct is provided with a first exhaust bypass downstream of the first exhaust fan along the exhaust direction, and the first exhaust bypass is used to deliver the exhaust air heated after part of the equipment has been cooled through the first combustion air supply air distributor to the turbocharger air inlet of the main engine;

[0007] A second air supply duct is provided with a second comfortable air blower for sucking comfortable air from outside the cabin into the incinerator room through the second air supply duct, and delivering the comfortable air to the vicinity of the incinerator through the second air supply blower to dissipate heat from the incinerator, so as to maintain a normal equipment operation environment and a comfortable working environment for personnel;

[0008] A second exhaust duct is provided with a second exhaust fan, which is used to suck in the air that has completed heat dissipation and temperature rise through the second exhaust fan, and discharge it to the outside of the cabin through the second exhaust duct, wherein the second exhaust duct is provided with a second exhaust bypass downstream of the second exhaust fan along the exhaust direction, and the second exhaust bypass is used to deliver part of the air that has completed heat dissipation and temperature rise through the second combustion air supply air distributor to the air inlet of the incinerator.

[0009] In some embodiments of the present invention, the first air supply duct is provided with a first grille and a first water remover at the air inlet, and is provided with a first closing damper at a position close to the air inlet.

[0010] In some embodiments of the present invention, the first exhaust duct is provided with a first exhaust grille at the air outlet.

[0011] In some embodiments of the present invention, the second air supply duct is provided with a second grille and a second water remover at the air inlet, and is provided with a second closing damper at a position close to the air inlet.

[0012] In some embodiments of the present invention, the second air exhaust duct is provided with a second air exhaust grille at the air outlet.

[0013] An embodiment of the present invention further provides a ship, wherein the ship adopts the cabin ventilation system with air recycling described in the above embodiment.

[0014] Compared with the prior art, the engine room ventilation system and ship with air recycling provided by the embodiments of the present invention have the following beneficial effects: by arranging a first exhaust bypass on the first exhaust duct, the heat dissipation exhaust air of the first exhaust bypass can be provided to the main engine as combustion air, and by arranging a second exhaust bypass on the second exhaust duct, the heat dissipation exhaust air of the second exhaust bypass can be provided to the incinerator as combustion air, thereby achieving mechanical air supply in which a combustion air fan and a comfort ventilation fan are separately configured, and only one air supply fan is configured to meet the dual needs of the equipment for combustion and heat dissipation at the same time. In addition, the exhaust air that has been heated up after heat dissipation is bypassed to the combustion air inlet of the equipment for reuse, which reduces the machine to a certain extent. The amount of air provided to the cabin by mechanical air supply can also reduce the specifications and quantity of air supply equipment. Specifically, the total air supply volume is reduced. Within the allowable wind speed range of each link of the mechanical air supply, the specifications and sizes of the air inlet grille and exhaust grille, dehumidifier, air supply duct, exhaust duct and structural air duct can be reduced. At the same time, the number of air supply fans can be reduced, mainly by setting a first exhaust bypass duct and a second exhaust bypass duct, which eliminates the need for a specially arranged combustion air supply fan. In addition, compared with the mechanical ventilation method of directly introducing outdoor air as the combustion air, the exhaust air after heat dissipation is used as the combustion air of the equipment, and its temperature is higher and it is easier to reach the fuel ignition point, which can save combustion fuel to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a cabin ventilation system with air recycling provided in an embodiment of the present invention.

[0016] Reference numerals

[0017] 1. First air supply duct; 2. First comfort air blower; 3. Engine room; 4. First air supply cabinet; 5. Main engine; 6. First exhaust duct; 7. First exhaust fan; 8. First exhaust fan; 9. First exhaust bypass; 10. First combustion air supply cabinet; 11. Turbocharger; 12. Second air supply duct; 13. Second comfort air blower; 14. Incinerator room; 15. Second air supply cabinet; 16. Incinerator; 17. Second exhaust duct; 18. Second exhaust fan; 19. The second exhaust fan; 20. The second exhaust bypass; 21. The second combustion air supply air distributor; 22. The air inlet of the incinerator; 23. The first grille; 24. The first dehumidifier; 25. The first closing damper; 26. The first exhaust grille; 27. The second grille; 28. The second dehumidifier; 29. ​​The second closing damper; 30. The second exhaust grille; 31. The chimney; 32. The first fan room; 33. The second fan room; 34. The deck; 35. The first carbon dioxide exhaust fan; 36. The second carbon dioxide exhaust fan. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0020] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0021] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features of the claims and are therefore within the scope of protection defined thereby.

[0022] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0023] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0024] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0025] An embodiment of the present invention provides a cabin ventilation system for air circulation, such as Figure 1 As shown, including:

[0026] A first air supply duct 1 is provided with a first comfortable air blower 2 for sucking comfortable air from outside the cabin 3 into the cabin 3 through the first air supply duct 1, and delivering the comfortable air to the main engine 5 through the first air supply blower 4 to dissipate heat from the main engine 5, so as to maintain a normal equipment operation environment and a comfortable working environment for personnel;

[0027] A first exhaust duct 6 is provided with a first exhaust fan 7, which is used to suck the air heated after the equipment heat dissipation is completed through the first exhaust fan 8, and discharge it to the outside of the cabin 3 through the first exhaust duct 6, wherein the first exhaust duct 6 is provided with a first exhaust bypass 9 downstream of the first exhaust fan 7 along the exhaust direction, and the first exhaust bypass 9 is used to send the exhaust air heated after part of the equipment heat dissipation is completed through the first combustion air supply air distributor 10 to the air inlet of the turbocharger 11 of the main engine 5;

[0028] That is, the first air supply duct 1, the first exhaust duct 6 and the first exhaust bypass 9 realize the heat dissipation of the equipment and provide the necessary combustion air for the host 5, and at the same time realize the function of cooling the equipment by the comfortable air and creating a comfortable working environment and satisfying the combustion air demand of the combustion equipment, and after realizing the functions of the above two systems, the heated air is discharged to the outside of the cabin 3 through the first exhaust fan 7;

[0029] The second air supply duct 12 is provided with a second comfortable air blower 13, which is used to draw the comfortable air from outside the engine room 3 into the incinerator chamber 14 through the second air supply duct 12, and send the comfortable air to the vicinity of the incinerator 16 through the second air supply air distributor 15 to dissipate the heat of the incinerator 16, so as to maintain a normal equipment operation environment and a comfortable working environment for personnel;

[0030] The second exhaust duct 17 is provided with a second exhaust fan 18, which is used to suck the air that has completed heat dissipation and temperature rise through the second exhaust fan 19, and discharge it to the outside of the cabin 3 through the second exhaust duct 17, wherein the second exhaust duct 17 is provided with a second exhaust bypass 20 downstream of the second exhaust fan 18 along the exhaust direction, and the second exhaust bypass 20 is used to send the exhaust air that has partially heated up after heat dissipation through the second combustion air supply air distributor 21 as combustion air to the incinerator air inlet 22 of the incinerator 16;

[0031] Here, the second air supply duct 12, the second exhaust duct 17 and the second exhaust bypass 20 are used to dissipate heat from the equipment and provide the necessary combustion air for the incinerator 16, thereby realizing the functions of the comfort air system and the combustion air system. After realizing the functions of the above two systems, the heated air is discharged to the outside of the cabin 3 through the second exhaust fan 18.

[0032] In some embodiments of the present invention, the first air supply duct 1 is provided with a first grille 23 and a first dehumidifier 24 at the air inlet, and a first closing damper 25 is provided near the air inlet. The first closing damper 25 is used to realize the opening and closing of the first air supply duct 1. The first grille 23, the first dehumidifier 24 and the first closing damper 25 are all arranged in the first fan room 32 on the deck 34.

[0033] In this embodiment, the first exhaust duct 6 is provided with a first exhaust grille 26 at the air outlet.

[0034] During air circulation, outdoor air passes through the air inlet of the first air supply duct 1, passes through the first grille 23, the first dehumidifier 24 in sequence, and then passes through the structural air duct of the first air supply duct 1, and passes through the first comfortable air blower 2 and the first air supply air distributor 4 to enter the main engine 5, ventilating and cooling the main engine 5, making the environment relatively comfortable, maintaining the normal operation of the equipment and the normal work of the crew. After a series of heat exchange, the comfortable air entering the cabin 3 rises to a certain temperature. At this time, it can pass through the first exhaust fan 8, the first exhaust fan 7, The structural air duct of the first exhaust duct 6 and the first exhaust grille 26 are exhausted to the outside of the cabin 3. At the same time, a first carbon dioxide exhaust fan 35 is also provided at the tail of the first exhaust fan 8, wherein the first exhaust duct 6 is provided with a first exhaust bypass 9 downstream of the first exhaust fan 7 along the exhaust direction. The first exhaust bypass 9 is used to deliver the exhaust air that is heated after partial heat dissipation to the air inlet of the turbocharger 11 of the main engine 5 through the first combustion air supply air distributor 10 as combustion air, so as to meet the demand of the main engine 5 for combustion air and maintain the normal operation of the main engine 5.

[0035] In some embodiments of the present invention, the second air supply duct 12 is provided with a second grille 27 and a second dehumidifier 28 at the air inlet, and is provided with a second closing damper 29 near the air inlet. The second closing damper 29 is used to realize the opening and closing of the second air supply duct 12. The second grille 27, the second dehumidifier 28 and the second closing damper 29 are all arranged in a second fan room 33 on the deck 34.

[0036] In this embodiment, the second exhaust duct 17 is provided with a second exhaust grille 30 at the air outlet.

[0037] During air circulation, outdoor air passes through the air inlet of the second air supply duct 12, passes through the second grille 27, the second dehumidifier 28 in sequence, and then passes through the structural air duct of the second air supply duct 12, and passes through the second comfortable air blower 13 and the second air supply air distributor 15 to enter the incinerator chamber 14, ventilating and cooling the incinerator chamber 14 to make the environment relatively comfortable, maintain the normal operation of the equipment and the normal work of the crew. After a series of heat exchange, the comfortable air entering the incinerator chamber 14 rises to a certain temperature. At this time, it can pass through the second exhaust fan 19, the second exhaust fan 19 in sequence. The fan 18, the structural air duct of the second exhaust duct 17, and the second exhaust grille 30 exhaust to the outside of the cabin 3. At the same time, a second carbon dioxide exhaust fan 36 is also provided at the tail end of the second exhaust fan 19, wherein the second exhaust duct 17 is provided with a second exhaust bypass 20 at the rear end of the second exhaust fan 18 along the exhaust direction. The second exhaust bypass 20 is used to deliver part of the heat-dissipated and heated air to the incinerator air inlet 22 of the incinerator 16 through the second combustion air supply air distributor 21 to meet the combustion air demand of the incinerator 16 and maintain the normal operation of the incinerator 16.

[0038] In the above embodiments, the above technical solutions all use ISO8861 as the calculation and design basis.

[0039] It can be known from the above technical scheme that the cabin 3 ventilation system with air circulation provided by the above embodiment of the present invention is provided with a first exhaust bypass 9 on the first exhaust duct 6, so that the heat dissipation exhaust air of the first exhaust bypass 9 can be provided to the turbocharger 11 of the main engine 5 as combustion air, and the second exhaust bypass 20 is provided on the second exhaust duct 17, so that the heat dissipation exhaust air of the second exhaust bypass 20 can be provided to the incinerator 16 as combustion air, so as to realize mechanical ventilation relative to the mechanical ventilation of the combustion air blower and the comfort ventilation blower arranged separately, and not only can the cabin 3 be provided with a comfortable ventilation air volume , greatly reducing the amount of air provided to the cabin 3, and can also reduce the specifications and quantity of equipment. Specifically, the specifications and sizes of air inlet grilles and exhaust grilles, dehumidifiers, supply air ducts, exhaust air ducts and structural air ducts can be reduced. At the same time, the number of blowers can also be reduced, mainly by arranging the first exhaust air duct 6 and the second exhaust air duct 17, thereby eliminating the need for a special combustion air blower; in addition, the comfortable exhaust air temperature for heat dissipation is higher than the combustion air temperature of the mechanical ventilation method in which the combustion air fan and the comfort ventilation fan are separately arranged, which can save fuel to a certain extent.

[0040] In some embodiments of the present invention, a chimney 31 may be provided on the top of the cabin 3, so that the first exhaust grille 26 of the first exhaust duct 6 provided at the air outlet and the second exhaust grille 30 of the second exhaust duct 17 provided at the air outlet can both exhaust the exhaust air through the chimney 31.

[0041] The embodiment of the present invention further provides a ship, which adopts the cabin 3 ventilation system with air circulation in the above embodiment, and has all the beneficial effects of the cabin 3 ventilation system with air circulation provided by the above embodiment. By arranging a first exhaust bypass 9 on the first exhaust duct 6, the exhaust air of the first exhaust bypass 9 can be provided to the turbocharger 11 of the main engine 5 as combustion air, and by arranging a second exhaust bypass 20 on the second exhaust duct 17, the exhaust air of the second exhaust bypass 20 can be provided to the incinerator 16 as combustion air, thereby realizing mechanical ventilation relative to the separate arrangement of the combustion air fan and the comfort ventilation fan. It can not only provide comfortable ventilation air volume to the cabin 3 and greatly reduce the amount of air provided to the cabin 3, but also reduce the specifications and quantity of equipment. Specifically, it can reduce the specifications and sizes of air inlet grilles and exhaust grilles, dehumidifiers, supply air ducts, exhaust air ducts and structural air ducts. At the same time, it can also reduce the number of air supply fans, mainly by setting the first exhaust duct 6 and the second exhaust duct 17, eliminating the need for a special combustion air supply fan; in addition, the comfortable exhaust temperature for heat dissipation is higher than the combustion air temperature of the mechanical ventilation method in which the combustion air fan and the comfort ventilation fan are separately arranged, which can save combustion fuel to a certain extent.

[0042] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. An air circulation cabin ventilation system, characterized in that: include: a first air supply duct, on which a first comfortable air blower is provided, for sucking comfortable outdoor air from outside the cabin into the cabin through the first air supply duct, and delivering the comfortable outdoor air to the main engine accessories through the first air supply blower to dissipate heat for the main engine; a first exhaust duct, on which a first exhaust fan is provided, for sucking the air heated after the equipment has been cooled through the first exhaust fan, and discharging it outside the cabin through the first exhaust duct, wherein the first exhaust duct is provided with a first exhaust bypass downstream of the first exhaust fan along the exhaust direction, and the first exhaust bypass is used to deliver the exhaust air heated after part of the equipment has been cooled through the first combustion air supply air distributor to the turbocharger air inlet of the main engine; A second air supply duct is provided with a second comfortable air blower for sucking the comfortable air from outside the cabin into the incinerator room through the second air supply duct, and delivering the comfortable air to the vicinity of the incinerator through the second air supply air distributor to dissipate heat from the incinerator; A second exhaust duct is provided with a second exhaust fan, which is used to suck in the air that has completed heat dissipation and temperature rise through the second exhaust fan, and discharge it to the outside of the cabin through the second exhaust duct, wherein the second exhaust duct is provided with a second exhaust bypass downstream of the second exhaust fan along the exhaust direction, and the second exhaust bypass is used to deliver part of the air that has completed heat dissipation and temperature rise through the second combustion air supply air distributor to the air inlet of the incinerator.

2. The cabin ventilation system for air circulation according to claim 1, characterized in that: The first air supply duct is provided with a first grille and a first water remover at the air inlet, and a first closing damper is provided at a position close to the air inlet.

3. The cabin ventilation system for air circulation according to claim 1, characterized in that: The first exhaust duct is provided with a first exhaust grille at the air outlet.

4. The cabin ventilation system for air circulation according to claim 1, characterized in that: The second air supply duct is provided with a second grille and a second water remover at the air inlet, and is provided with a second closing damper at a position close to the air inlet.

5. The cabin ventilation system for air circulation according to claim 1, characterized in that: The second air exhaust duct is provided with a second air exhaust grille at the air outlet.

6. A ship, characterized in that: The ship adopts the engine room ventilation system using air circulation as claimed in any one of claims 1 to 5.

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