Ship, method for air conditioning of a steering room in a ship

Abstract

While continuing the navigation of the ship, attempt to reduce the cost of countermeasures that can suppress the impact of ammonia on crew members and passengers. 【Solution means】 The ship includes a hull, a steering cabin provided on the hull, a main air conditioner provided on the hull, an air supply duct for supplying air from the main air conditioner to the steering cabin, a return air duct for returning the air in the steering cabin to the main air conditioner, an outside air introduction duct for introducing outside air into the main air conditioner, a steering cabin exhaust duct equipped with an exhaust fan capable of forcibly discharging the air in the steering cabin, a steering cabin outside air introduction line having a decontamination filter for removing ammonia contained in the outside air and capable of forcibly introducing the outside air decontaminated by the decontamination filter into the steering cabin, a first opening / closing part for opening and closing the air supply duct and the return air duct, and a second opening / closing part for opening and closing the steering cabin outside air introduction line.

Description

Technical Field

[0001] The present disclosure relates to a ship and an air conditioning method for a steering room in a ship.

Background Art

[0002] In ships, ammonia may be carried as fuel for ship propulsion or as cargo. Since ammonia has a strong odor and high toxicity, in the event of a leak of the loaded ammonia, or when the pressure in the ammonia tank rises excessively and ammonia is released to the atmosphere, etc., it is necessary to take measures so that ammonia does not reach the crew or passengers on board the ship.

[0003] For example, Patent Document 1 discloses a configuration in which an air lock space is provided at the entrance and exit of an engine room where an engine using ammonia as fuel is installed. The air lock space has a pressurizing means for maintaining the internal pressure higher than the pressure in the engine room or a ventilation means for replacing the internal air. With such a configuration, by providing the air lock space, when an odor due to ammonia occurs in the engine room, leakage of ammonia to the outside of the engine room is suppressed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, even when a leak of ammonia occurs or when ammonia is released to the atmosphere, it is necessary to continue the navigation of the ship. In addition, measures for suppressing the influence of ammonia on the crew and the situation are required to be realized at as low a cost as possible.

[0006] The present disclosure has been made to solve the above problems, and an object thereof is to provide a ship capable of reducing the cost of countermeasures that can suppress the influence of ammonia on crew members and passengers while continuing the navigation of the ship, and an air conditioning method for a steering room in a ship.

Means for Solving the Problems

[0007] In order to solve the above problems, a ship according to the present disclosure includes a hull, a steering room, a main air conditioner, an air supply duct, a return air duct, an outside air introduction duct, a steering room exhaust duct, a steering room outside air introduction line, a first opening / closing part, a second opening / closing part, A detection unit and a control unit and is provided with. The steering room is provided in the hull. The main air conditioner is provided in the hull. The air supply duct supplies air from the main air conditioner to the steering room. The return air duct returns the air in the steering room to the main air conditioner. The outside air introduction duct introduces outside air into the main air conditioner. The steering room exhaust duct is provided with an exhaust fan capable of forcibly discharging the air in the steering room. The steering room outside air introduction line has a decontamination filter for removing ammonia contained in the outside air. The steering room outside air introduction line can forcibly introduce the outside air decontaminated by the decontamination filter into the steering room. The first opening / closing part opens and closes the air supply duct and the return air duct. The second opening / closing part opens and closes the steering room outside air introduction line. The detection unit detects the ammonia concentration of the outside air. The control unit controls the first opening / closing unit and the second opening / closing unit. The control unit closes the air supply duct and the return air duct by the first opening / closing unit, and opens the steering cabin outside air introduction line by the second opening / closing unit.

[0008] An air conditioning method for a steering room in a ship according to the present disclosure is A hull, a steering cabin provided on the hull, a main air conditioner provided on the hull, an air supply duct for supplying air from the main air conditioner to the steering cabin, a return air duct for returning the air in the steering cabin to the main air conditioner, an outside air introduction duct for introducing outside air into the main air conditioner, a steering cabin exhaust duct provided with an exhaust fan capable of forcibly discharging the air in the steering cabin, a decontamination filter for removing ammonia contained in the outside air, and a steering cabin outside air introduction line capable of forcibly introducing the outside air decontaminated by the decontamination filter into the steering cabin, a first opening / closing unit for opening and closing the air supply duct and the return air duct, and a second opening / closing unit for opening and closing the steering cabin outside air introduction line An air conditioning method for a steering room in a ship. The air conditioning method for a steering room in the ship includes a step of detecting whether the ammonia concentration in the outside air is equal to or higher than a preset concentration, and a step of forcibly introducing the outside air that has passed through the decontamination filter into the steering room. The step of forcibly introducing the outside air that has passed through the decontamination filter into the steering room shuts off the air circulation between the steering room and the main air conditioner when it is detected that the ammonia concentration in the outside air is equal to or higher than the preset concentration, and forcibly introduces the outside air that has passed through the decontamination filter into the steering room.

Effects of the Invention

[0009] According to the ship of the present disclosure and the air conditioning method for the steering room in the ship, it is possible to reduce the cost of countermeasures that can suppress the influence of ammonia on crew members and passengers while continuing the navigation of the ship.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0011] Hereinafter, the ship according to the embodiment of the present disclosure and the air conditioning method for the steering room in the ship will be described with reference to FIGS. 1 to 8. (Overall Configuration of the Ship) As shown in FIG. 1, the ship 1 of this embodiment includes at least a hull 2, a superstructure 4, a living area 10, and an air-conditioning system As (see FIGS. 2 and 3). Note that the ship type of the ship 1 is not limited to a specific ship type. Examples of the ship type of the ship 1 include cargo ships such as container ships, liquefied gas carriers, ferries, RORO ships, car carriers, passenger ships, and the like.

[0012] The hull 2 has a pair of side shells 5A and 5B forming its outer shell and a bottom 6. The side shells 5A and 5B include a pair of side shell plates respectively forming the left and right side shells. The bottom 6 includes a bottom shell plate connecting these side shells 5A and 5B. Inside the hull 2, a plurality of decks 7 are provided vertically. Among the plurality of decks 7, an upper deck 8 is provided as a continuous deck arranged on the uppermost layer. The superstructure 4 is formed on this upper deck 8. In this embodiment, the superstructure 4 is provided on the upper deck 8, for example, on the stern 2b side of the hull 2. The superstructure 4 may be provided on the bow 2a side of the hull 2.

[0013] The ship 1 is equipped with ammonia facilities (not shown). Examples of the ammonia facilities include a tank for storing ammonia and equipment using ammonia as fuel. The ammonia facilities are provided outside the living area 10. The installation position of the ammonia facilities on the ship 1 is not limited as long as it is outside the living area 10. The ammonia facilities can be arranged, for example, inside the hull 2, on the upper deck 8, etc.

[0014] (Configuration of the living area) The living area 10 is where the crew and passengers of the ship 1 live during the navigation of the ship 1. The living area 10 is provided inside the superstructure 4. The installation position and number of the living area 10 on the ship 1 shown here are merely examples and can be appropriately changed.

[0015] FIG. 2 is a diagram showing the configuration of the air-conditioning system in the embodiment of the present disclosure. As shown in FIG. 2, the living area 10 includes a plurality of rooms 100, a passage 120, and an airlock chamber 140. The plurality of rooms 100 and the passage 120 are provided inside the living area 10.

[0016] The plurality of compartments 100 are arranged side by side along the passageway 120 so as to be in contact with the passageway 120. Examples of the plurality of compartments 100 include a passenger compartment 100R for crew members or passengers, a galley (not shown) for cooking meals provided for crew members or passengers, a dining room 100E where crew members or passengers have meals, a toilet 100T, and the like.

[0017] The passageway 120 is connected to the plurality of compartments 100 via louvered doors 101 provided in each of the plurality of compartments 100.

[0018] The airlock chamber 140 is provided at a portion where crew members or passengers enter and exit at the boundary between the passageway 120 in the living area 10 and the outside of the living area 10. At least one airlock chamber 140 is provided. In this embodiment, for example, two airlock chambers 140 are provided. The airlock chambers 140 in this embodiment are respectively provided at both ends in the extending direction of the passageway 120. Note that the number and arrangement of the airlock chambers 140 are not limited in any way and can be changed as appropriate. That is, the airlock chamber 140 can also be omitted.

[0019] Each of the airlock chambers 140 includes a first door 141 and a second door 142. The airlock chamber 140 is isolated from the passageway 120 by the openable and closable first door 141. The airlock chamber 140 is isolated from the outside of the living area 10 by the openable and closable second door 142. Crew members or passengers can enter and exit between the passageway 120 in the living area 10 and the outside of the living area 10 by opening the first door 141 and the second door 142.

[0020] FIG. 3 is a diagram showing the configuration of the air conditioning system of the steering room in the embodiment of the present disclosure. The living area 10 is equipped with a steering room 300. The outside of the steering room 300 is outdoors and there is outside air. The steering room 300 has a size capable of accommodating all crew members and passengers on board the ship 1, in other words, the maximum number of people (also referred to as the rated capacity) who can board the ship 1. As shown in FIG. 3, the steering room 300 is provided with an opening / closing door 301. Crew members and passengers can move between the inside and outside of the steering room 300 through the opening / closing door 301 when necessary. The above-described air lock chamber is not provided in the steering room 300. A toilet 305 is provided inside the steering room 300.

[0021] (Configuration of the air conditioning system) As shown in FIG. 2, the air conditioning system As includes a main air conditioner 40, an air supply section 41, an air return section 42, an outside air introduction duct 43, an exhaust duct 47, a sub-air conditioner 50 (see FIG. 3), a steering room outside air introduction line 85 (see FIG. 3), a steering room exhaust duct (see FIG. 3) 88, and a control section (see FIG. 3) 60.

[0022] The main air conditioner 40 supplies temperature-adjusted air to a plurality of rooms 100 and the steering room 300 within the living area 10. The main air conditioner 40 is installed, for example, in the superstructure 4.

[0023] The air supply section 41 has a main air supply duct 41m, a plurality of first air supply ducts 41s, and a second air supply duct (air supply duct) 41t. One end of the main air supply duct 41m is connected to the main air conditioner 40. The main air supply duct 41m enables the supply of air temperature-adjusted by the main air conditioner 40 to a plurality of rooms 100, the air lock chamber 140, and the steering room 300.

[0024] A plurality of first air supply ducts 41s are connected to the main air supply duct 41m. The main air conditioner 40 is connected to a plurality of rooms 100 and the airlock chamber 140 via the main air supply duct 41m and the plurality of first air supply ducts 41s. The main air conditioner 40 supplies the air whose temperature is adjusted by the main air conditioner 40 to each of the plurality of rooms 100 and the airlock chamber 140 through each of the plurality of first air supply ducts 41s from the main air supply duct 41m. The air supplied to the plurality of rooms 100 flows into the passage 120 through the door 101 with a louver.

[0025] As shown in FIG. 3, the second air supply duct 41t is connected to the main air supply duct 41m. An on-off valve is provided as a first opening / closing part 91 for opening and closing the second air supply duct 41t in the middle of the second air supply duct 41t. The main air conditioner 40 is connected to the steering room 300 via the main air supply duct 41m and the second air supply duct 41t. The main air conditioner 40 supplies the air whose temperature is adjusted by the main air conditioner 40 to the steering room 300 through the second air supply duct 41t from the main air supply duct 41m.

[0026] As shown in FIG. 2, the air return part 42 has a main air return duct 42m, a first air return duct 42s, and a second air return duct (air return duct) 42t. One end of the main air return duct 42m is connected to the main air conditioner 40. The main air return duct 42m returns the air from the passage 120 and the steering room 300 to the main air conditioner 40.

[0027] The first air return duct 42s is connected to the main air return duct 42m. The main air return duct 42m is connected to the passage 120 via the first air return duct 42s. The air supplied to the living room 100R and the dining room 100E through the main air supply duct 41m passes through the door 101 with a louver, and returns from the passage 120 to the main air conditioner 40 through the first air return duct 42s and the main air return duct 42m.

[0028] As shown in FIG. 3, the second return air duct 42t is connected to the main return air duct 42m. An on-off valve is provided as a first on-off part 92 for opening and closing the second return air duct 42t in the middle of the second return air duct 42t. The main return air duct 42m is connected to the steering room 300 via the second return air duct 42t. The second return air duct 42t returns the air inside the steering room 300 to the main air conditioner 40 through the second return air duct 42t and the main return air duct 42m.

[0029] As shown in FIG. 2, the outside air introduction duct 43 supplies outside air to the main air conditioner 40. One end of the outside air introduction duct 43 opens into the atmosphere outside the ship. The other end of the outside air introduction duct 43 is connected to the suction port of the main air conditioner 40. The outside air introduction duct 43 of the present disclosure is connected in the middle of the main return air duct 42m.

[0030] The exhaust duct 47 discharges the air in, for example, the toilet 100T among the plurality of rooms 100 into the atmosphere outside the living area 10. The toilet 100T may also be referred to as a sanitary room, a sanitary compartment, etc. The exhaust duct 47 in the present embodiment is connected to the toilet 100T. The exhaust duct 47 includes an exhaust fan 47f and a closing device 47v.

[0031] The exhaust duct 47 sucks the air in the toilet 100T by the exhaust fan 47f and discharges it into the atmosphere. When the air in the toilet is sucked into the exhaust duct 47, the pressure in the toilet decreases. As a result, the air in the living room 100R and the passage 120 flows into the toilet 100T through the door 101 with a louver in the toilet 100T. As a result, a part of the air in the living area 10 flows into the toilet 100T.

[0032] The closing device 47v has a valve capable of closing the flow path in the exhaust duct 47. If necessary, by closing the flow path in the exhaust duct 47 with the closing device 47v, the discharge of the air in the toilet 100T to the atmosphere through the exhaust duct 47 can be blocked.

[0033] As shown in FIG. 3, the auxiliary air conditioner 50 is provided in the equipment room 310 adjacent to the steering room 300. The auxiliary air conditioner 50 is connected with an auxiliary air conditioner supply duct 51 and an auxiliary air conditioner return duct 52. Each of the auxiliary air conditioner supply duct 51 and the auxiliary air conditioner return duct 52 connects the auxiliary air conditioner 50 and the steering room 300. The auxiliary air conditioner 50 sucks in the air in the steering room 300 through the auxiliary air conditioner return duct 52. The auxiliary air conditioner 50 supplies the air-conditioned air into the steering room 300 through the auxiliary air conditioner supply duct 51.

[0034] The auxiliary air conditioner 50 does not suck in air from other than the auxiliary air conditioner return duct 52. That is, the auxiliary air conditioner 50 sucks in only the air in the steering room 300 and supplies the air-conditioned air into the steering room 300. For this reason, as long as ammonia does not intrude into the steering room 300, the auxiliary air conditioner 50 does not suck in the air containing ammonia. Therefore, for the auxiliary air conditioner 50, the necessity of being configured using a material having corrosion resistance against ammonia can be suppressed, and the cost increase can be suppressed.

[0035] The steering room outside air introduction line 85 can introduce outside air into the steering room 300. The steering room outside air introduction line 85 connects the atmosphere outside the ship and the inside of the steering room 300. The steering room outside air introduction line 85 is provided with a decontamination filter 86 and a blower fan 87. The decontamination filter 86 is provided in the middle of the steering room outside air introduction line 85. When ammonia is contained in the atmosphere (air) sucked in from the atmosphere outside the ship through the steering room outside air introduction line 85, the decontamination filter 86 reduces ammonia. The blower fan 87 forcibly sends the air taken in from the atmosphere through the steering room outside air introduction line 85 into the steering room 300. When introducing air into the steering room 300 through the steering room outside air introduction line 85, a pressure loss occurs in the decontamination filter 86. The blower fan 87 can supplement the pressure loss caused by providing the decontamination filter 86 and forcibly introduce the outside air decontaminated by the decontamination filter 86 into the steering room 300. An on-off valve is provided as a second on-off part 93 for opening and closing the steering gear outside air introduction line 85 in the middle of the steering gear outside air introduction line 85.

[0036] The steering gear exhaust duct 88 discharges the air in the steering gear 300 into the atmosphere outside the steering gear 300. The steering gear exhaust duct 88 of the present embodiment connects the toilet 305 provided in the steering gear 300 and the atmosphere outside the ship. An exhaust fan 89 is provided in the steering gear exhaust duct 88. By operating the exhaust fan 89, the air in the steering gear 300 can be forcibly discharged into the atmosphere outside the ship. When the exhaust fan 89 is operated, the air in the steering gear 300 is sucked into the steering gear exhaust duct 88 through the toilet 305 through the louvered door 306 provided in the toilet 305 and is forcibly discharged into the atmosphere outside the ship. Further, when the pressure in the steering gear 300 is higher than the pressure of the atmosphere outside the ship, due to the pressure difference, even when the exhaust fan 89 is stopped, the air in the steering gear 300 is gradually naturally exhausted into the atmosphere outside the ship through the steering gear exhaust duct 88.

[0037] As shown in FIG. 2, the ship 1 is provided with an ammonia detection unit 95 for detecting the ammonia concentration of the atmosphere (outside air) outside the ship. The ammonia detection unit 95 is provided, for example, in the outside air introduction duct 43 and detects the ammonia concentration of the outside air supplied to the main air conditioner 40 through the outside air introduction duct 43. The ammonia detection unit 95 may be provided at other locations other than the outside air introduction duct 43.

[0038] As shown in FIG. 3, the control unit 60 controls at least the first on-off parts 91, 92, the second on-off part 93, the air supply fan 87, and the exhaust fan 89. The control unit 60 may automatically control the first on-off parts 91, 92, the second on-off part 93, the air supply fan 87, and the exhaust fan 89 based on, for example, a preset computer program, or may remotely operate the first on-off parts 91, 92, the second on-off part 93, the air supply fan 87, and the exhaust fan 89 based on the operation of an operator.

[0039] (Procedure of the air conditioning method for the steering room on a ship) FIG. 4 is a flowchart showing the procedure of the air conditioning method for the steering room on a ship according to an embodiment of the present disclosure. As shown in FIG. 4, the air conditioning method S10 for the steering room on a ship according to the present embodiment includes a step S11 of detecting whether the ammonia concentration in the outside air is equal to or higher than a preset concentration, a step S12 of introducing the air from the main air conditioner into a plurality of rooms and the steering room, and a step S13 of blocking the air circulation between the steering room and the main air conditioner and forcibly introducing the decontaminated outside air into the steering room.

[0040] In step S11 of detecting whether the ammonia concentration in the outside air is equal to or higher than a preset concentration, as shown in FIG. 2, the ammonia detection unit 95 detects the ammonia concentration of the outside air supplied to the main air conditioner 40 through the outside air introduction duct 43. The ammonia detection unit 95 detects whether the ammonia concentration of the outside air is equal to or higher than a predetermined preset concentration. Here, the predetermined concentration can be, for example, the lower limit value of the ammonia concentration that may have an adverse effect on the human body. Note that the predetermined concentration may be an ammonia concentration lower than the lower limit value of the ammonia concentration that may have an adverse effect on the human body. As a result of the above detection, when the ammonia concentration in the outside air is less than the preset concentration (step S11: No), it is assumed to be normal, and the process proceeds to step S12. Also, when the ammonia concentration equal to or higher than the preset concentration is detected in the outside air (step S11: Yes), the process proceeds to step S13.

[0041] FIG. 5 is a diagram showing the air flow in the residential area during normal times. As shown in FIG. 5, in step S12 of introducing the air from the main air conditioner into a plurality of rooms and the steering room, assuming that it is normal when the ammonia concentration in the outside air is less than the preset concentration, the main air conditioner 40 is operated to perform air conditioning in the plurality of rooms 100 and the steering room 300. In this step S12, outside air is introduced into the main air conditioner 40 through the outside air introduction duct 43. The air whose temperature is adjusted by the main air conditioner 40 is supplied from the main supply duct 41m to each of the plurality of rooms 100 through the plurality of first supply ducts 41s. As a result, the plurality of rooms 100 are air-conditioned by being supplied with the air whose temperature is adjusted by the main air conditioner 40. The air supplied to the plurality of rooms 100 returns to the main air conditioner 40 through the passage 120, the first return duct 42s, and the main return duct 42m.

[0042] Also, the air whose temperature is adjusted by the main air conditioner 40 is supplied to the airlock chamber 140 from the main supply duct 41m through the plurality of first supply ducts 41s. As a result, the airlock chamber 140 becomes a positive pressure with a higher pressure than the outside of the residential area 10. Therefore, when the first door 141 and the second door 142 are closed, the intrusion of air from the outside into the airlock chamber 140 is suppressed. Thereby, even when there is an ammonia odor outside the residential area 10, the intrusion of ammonia is suppressed.

[0043] FIG. 6 is a diagram showing the air flow in the steering room during normal times. Also, as shown in FIGS. 5 and 6, in step S12, the control unit 60 causes the first opening / closing units 91 and 92 to open the second supply duct 41t and the second return duct 42t. In this state, a part of the air whose temperature is adjusted in the main air conditioner 40 is supplied from the main supply duct 41m to the steering room 300 through the second supply duct 41t. Thereby, the steering room 300 is air-conditioned. In step S12, the control unit 60 closes the steering room outside air introduction line 85 by the second opening / closing unit 93 and stops the air supply fan 87. As a result, only the air whose temperature is adjusted in the main air conditioner 40 and is supplied to the steering room 300 from the main supply duct 41m through the second supply duct 41t is supplied to the steering room 300.

[0044] Also, in step S12, the control unit 60 operates the exhaust fan 89. As a result, a part of the air supplied into the steering cabin 300 through the main air supply duct 41m and the second air supply duct 41t is forcibly discharged into the atmosphere outside the ship through the steering cabin exhaust duct 88. The remaining air supplied into the steering cabin 300 is returned to the main air conditioner 40 through the second air return duct 42t and the main air return duct 42m. In step S12, the auxiliary air conditioner 50 may be operated as necessary, and the air temperature-adjusted in the auxiliary air conditioner 50 may be supplied to the steering cabin 300.

[0045] FIG. 7 is a diagram showing the air flow in the living area when an ammonia concentration equal to or higher than a preset concentration is detected. FIG. 8 is a diagram showing the air flow in the steering cabin when an ammonia concentration equal to or higher than a preset concentration is detected. As shown in FIGS. 7 and 8, in step S13 of blocking the air circulation between the steering cabin and the main air conditioner and forcibly introducing the decontaminated outside air into the steering cabin, the control unit 60 closes the second air supply duct 41t and the second air return duct 42t by the first opening / closing parts 91 and 92. As a result, the supply of air from the main air conditioner 40 to the steering cabin 300 is stopped. When an ammonia concentration equal to or higher than a preset concentration is detected, all crew members and passengers on the ship 1 are evacuated into the steering cabin 300. Therefore, since there are no crew members or passengers in the plurality of cabins 100, in step S13, the operation of the main air conditioner 40 may be stopped.

[0046] As shown in FIG. 8, in step S13, the control unit 60 opens the steering outdoor air introduction line 85 with the second opening / closing unit 93. In step S13, the control unit 60 operates the air supply fan 87 of the steering outdoor air introduction line 85 and stops the exhaust fan 89 of the steering room exhaust duct 88. Then, the outside air is forcibly sent into the steering room 300 through the steering outdoor air introduction line 85 by the air supply fan 87. Ammonia contained in the outside air sucked through the steering outdoor air introduction line 85 is reduced (detoxified) by the detoxification filter 86. In this way, the outside air detoxified by the detoxification filter 86 is introduced into the steering room 300 through the steering outdoor air introduction line 85. At this time, since the second air supply duct 41t is in a closed state by the first opening / closing unit 91, the air supply to the steering room 300 through the second air supply duct 41t is not performed. That is, the detoxified air is forcibly introduced into the steering room 300 only through the steering outdoor air introduction line 85 provided with the detoxification filter 86.

[0047] The air in the steering room 300 is discharged into the atmosphere outside the steering room 300 through the toilet 305 and the steering room exhaust duct 88. At this time, since the exhaust fan 89 is stopped, the pressure in the steering room 300 where the outside air is forcibly introduced through the steering outdoor air introduction line 85 by the air supply fan 87 becomes higher than the pressure of the atmosphere outside the ship. Thereby, the intrusion of the air containing ammonia from the outside to the inside of the steering room 300 is suppressed. Also, since the pressure in the steering room 300 becomes higher than the pressure of the atmosphere outside the ship, due to the pressure difference, the air in the steering room 300 is naturally exhausted from the steering room 300 only through the steering room exhaust duct 88 and into the atmosphere outside the ship through the steering room exhaust duct 88.

[0048] (Function and Effect) In the ship 1 of the above embodiment, the air conditioned by the main air conditioner 40 is supplied to the steering room 300 through the second air supply duct 41t. The air in the steering room 300 is circulated to the main air conditioner 40 through the second air return duct 42t. Further, outside air is introduced into the second air return duct 42t through the outside air introduction duct 43, so the air supplied from the main air conditioner 40 to the steering room 300 contains outside air. The first opening / closing parts 91 and 92 can interrupt the air circulation between the steering room 300 and the main air conditioner 40 by opening and closing the second air supply duct 41t and the second air return duct 42t. Also, the air in the steering room 300 is forcibly discharged through the steering room exhaust duct 88 by the exhaust fan 89. The outside air introduction line 85 for the steering room, which is opened and closed by the second opening / closing part 93, forcibly introduces the outside air with ammonia reduced by the deodorizing filter 86 into the steering room 300 by the air supply fan 87. According to such a configuration, when the ammonia concentration of the outside air is high, by closing the second air supply duct 41t and the second air return duct 42t with the first opening / closing parts 91 and 92, the intrusion of the outside air introduced through the outside air introduction duct 43 and the second air supply duct 41t and the air containing ammonia that has entered the plurality of rooms 100 and the airlock room 140 into the steering room 300 can be suppressed. Also, by opening the outside air introduction line 85 for the steering room with the second opening / closing part 93, the outside air with ammonia reduced by the deodorizing filter 86 can be introduced into the steering room 300. Thereby, the intrusion of ammonia into the steering room 300 can be effectively suppressed. Also, since the steering room 300 is provided with the outside air introduction line 85 for the steering room equipped with the deodorizing filter 86, when in a state with a high ammonia concentration, the outside air deodorized by the deodorizing filter 86 can be introduced into the steering room 300. Therefore, the natural ventilation opening can be abolished from the steering room 300, and when in a state with a high ammonia concentration, the intrusion of the outside air containing ammonia can be suppressed. By having crew members and passengers take shelter in such a wheelhouse 300, it is possible to continue the navigation of the ship 1 while suppressing the impact of ammonia on the crew members and passengers. Moreover, measures for suppressing the intrusion of ammonia only need to be provided in the wheelhouse 300. As a result, it is possible to reduce the cost of measures for suppressing the impact of ammonia on the crew members and passengers while continuing the navigation of the ship 1. Also, in the above embodiment, the wheelhouse 300 is provided with a toilet 305 and an auxiliary air conditioner 50. Therefore, it is easy for crew members and passengers to continue taking shelter in the wheelhouse 300 for a long time.

[0049] Furthermore, in the above embodiment, when the ammonia detection unit 95 detects an ammonia concentration equal to or higher than a preset concentration, the first opening and closing units 91 and 92 close the second air supply duct 41t and the second air return duct 42t, and the second opening and closing unit 93 opens the outside air introduction line 85 to the wheelhouse 300, thereby effectively suppressing the intrusion of ammonia into the wheelhouse 300.

[0050] Also, in the above embodiment, when an ammonia concentration equal to or higher than a preset concentration is detected, by stopping the exhaust fan 89 of the wheelhouse exhaust duct 88, it is possible to suppress the air in the wheelhouse 300 exhausted through the wheelhouse exhaust duct 88 from being forcibly exhausted by the exhaust fan 89. Therefore, it is possible to suppress the flow rate of the air in the wheelhouse 300 exhausted through the wheelhouse exhaust duct 88 from becoming larger than the flow rate of the outside air with ammonia reduced by the decontamination filter 86 introduced into the wheelhouse 300 through the outside air introduction line 85 to the wheelhouse 300. Thereby, the pressure inside the wheelhouse 300 can be maintained higher than the atmospheric pressure outside the ship, and the intrusion of air containing ammonia from the outside to the inside of the wheelhouse 300 can be suppressed.

[0051] Furthermore, in the above embodiment, the auxiliary air conditioner 50 sucks only the air inside the wheelhouse 300 and supplies the air-conditioned air into the wheelhouse 300. Therefore, by using the auxiliary air conditioner 50, it is possible to achieve air conditioning inside the wheelhouse 300 while suppressing the intrusion of ammonia into the wheelhouse 300.

[0052] According to the air conditioning method S10 of the steering room in the ship 1 of the above embodiment, when it is detected that the ammonia concentration in the outside air is equal to or higher than a preset concentration, the circulation of air between the steering room 300 and the main air conditioner 40 is blocked, and the outside air passing through the decontamination filter 86 is forcibly introduced into the steering room 300. As a result, the crew and passengers can evacuate to the steering room 300 where the intrusion of ammonia can be effectively suppressed, and while the navigation of the ship 1 continues, the influence of ammonia on the crew and passengers can be suppressed. Moreover, since the measures for suppressing the intrusion of ammonia only need to be provided in the steering room 300, the cost of the measures can be reduced.

[0053] (Other Embodiments) As described above, the embodiments of the present disclosure have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present disclosure are also included. In the above embodiment, the plurality of rooms 100 are exemplified by the living room 100R, the toilet 100T, the dining room 100E, etc., but the present invention is not limited thereto. Needless to say, the plurality of rooms 100 may be for other uses.

[0054] In addition, in the above embodiment, the air conditioning system and the air conditioning method of the plurality of rooms 100 other than the steering room 300 in the living area 10 are exemplified. However, the air conditioning system and the air conditioning method of the plurality of rooms 100 other than the steering room 300 can be changed as appropriate.

[0055] <Supplementary Note> The ship 1 described in the embodiment and the air conditioning method S10 of the steering room in the ship 1 are understood as follows, for example.

[0056] (1) The ship 1 according to the first aspect includes a hull 2, a steering room 300 provided on the hull 2, a main air conditioner 40 provided on the hull 2, an air supply duct 41t for supplying air from the main air conditioner 40 to the steering room 300, a return air duct 42t for returning the air in the steering room 300 to the main air conditioner 40, an outside air introduction duct 43 for introducing outside air into the main air conditioner 40, a steering room exhaust duct 88 provided with an exhaust fan 89 capable of forcibly discharging the air in the steering room 300, a decontamination filter 86 for removing ammonia contained in the outside air, a steering room outside air introduction line 85 capable of forcibly introducing the outside air decontaminated by the decontamination filter 86 into the steering room 300, first opening and closing parts 91, 92 for opening and closing the air supply duct 41t and the return air duct 42t, and a second opening and closing part 93 for opening and closing the steering room outside air introduction line 85.

[0057] In this ship 1, the air conditioned by the main air conditioner 40 is supplied to the steering room 300 through the air supply duct 41t. The air in the steering room 300 is circulated to the main air conditioner 40 through the return air duct 42t. Also, since outside air is introduced into the return air duct 42t through the outside air introduction duct 43, the air supplied from the main air conditioner 40 to the steering room 300 contains outside air. By the first opening and closing parts 91, 92 opening and closing the air supply duct 41t and the return air duct 42t, the circulation of air between the steering room 300 and the main air conditioner 40 can be interrupted. Also, the air in the steering room 300 is forcibly discharged through the steering room exhaust duct 88 by the exhaust fan 89. The steering room outside air introduction line 85 opened and closed by the second opening and closing part 93 forcibly introduces the outside air with ammonia reduced by the decontamination filter 86 into the steering room 300 by the air supply fan 87. According to such a configuration, when the ammonia concentration outside the steering cabin 300 is high, the first opening / closing parts 91 and 92 close the air supply duct 41t and the return air duct 42t, thereby suppressing the intrusion of outside air introduced through the outside air introduction duct 43 and the second air supply duct 41t into the steering cabin 300. Further, the second opening / closing part 93 opens the steering cabin outside air introduction line 85, so that the outside air with ammonia reduced by the decontamination filter 86 can be introduced into the steering cabin 300. Thereby, the intrusion of ammonia into the steering cabin 300 can be effectively suppressed. When crew members and passengers take shelter in such a steering cabin 300, the navigation of the ship 1 can be continued while suppressing the impact of ammonia on the crew members and passengers. Moreover, only the steering cabin 300 needs to be provided with measures for suppressing the intrusion of ammonia. As a result, it is possible to reduce the cost of measures that can suppress the impact of ammonia on crew members and passengers while continuing the navigation of the ship 1.

[0058] (2) The ship 1 according to the second aspect is the ship 1 according to (1), further comprising an ammonia detection part 95 for detecting the ammonia concentration of the outside air, and a control part 60 for controlling the first opening / closing parts 91 and 92 and the second opening / closing part 93. When the ammonia detection part 95 detects an ammonia concentration equal to or higher than a preset concentration, the control part 60 closes the air supply duct 41t and the return air duct 42t by the first opening / closing parts 91 and 92, and opens the steering cabin outside air introduction line 85 by the second opening / closing part 93.

[0059] Thereby, when the ammonia detection part 95 detects an ammonia concentration equal to or higher than a preset concentration, the first opening / closing parts 91 and 92 close the air supply duct 41t and the return air duct 42t, and the second opening / closing part 93 opens the steering cabin outside air introduction line 85, so that the intrusion of ammonia into the steering cabin 300 can be effectively suppressed.

[0060] (3) The ship 1 according to the third aspect is the ship 1 of (2), wherein the control unit 60 can control the exhaust fan 89, and when an ammonia concentration equal to or higher than a preset concentration is detected by the ammonia detector 95, the exhaust fan 89 in the steering cabin exhaust duct 88 is stopped.

[0061] Accordingly, when an ammonia concentration equal to or higher than a preset concentration is detected, by stopping the exhaust fan 89 in the steering cabin exhaust duct 88, the air in the steering cabin 300 exhausted through the steering cabin exhaust duct 88 can be prevented from being forcibly exhausted by the exhaust fan 89. Therefore, it is possible to suppress an increase in the flow rate of the air in the steering cabin 300 exhausted through the steering cabin exhaust duct 88 compared to the flow rate of the outside air with ammonia reduced by the deodorizing filter 86 introduced into the steering cabin 300 through the steering cabin outside air introduction line 85. Thereby, the inside of the steering cabin 300 can be maintained at a positive pressure, and the intrusion of air containing ammonia from the outside to the inside of the steering cabin 300 can be suppressed.

[0062] (4) The ship 1 according to the fourth aspect is any one of the ships 1 of (1) to (3), further comprising an auxiliary air conditioner 50 that sucks only the air in the steering cabin 300 and supplies conditioned air into the steering cabin 300.

[0063] Accordingly, the auxiliary air conditioner 50 sucks only the air in the steering cabin 300 and supplies the air-conditioned air into the steering cabin 300. Therefore, by using the auxiliary air conditioner 50, it is possible to achieve air conditioning in the steering cabin 300 while suppressing the intrusion of ammonia into the steering cabin 300.

[0064] (5) The air conditioning method S10 for the steering room in the ship 1 according to the fifth aspect is the air conditioning method S10 for the steering room in the ship described in any one of (1) to (4), and includes a step S11 of detecting whether the ammonia concentration in the outside air is equal to or higher than a preset concentration, and when it is detected that the ammonia concentration in the outside air is equal to or higher than the preset concentration, a step S13 of blocking the air circulation between the steering room 300 and the main air conditioner 40 and forcibly introducing the outside air passing through the decontamination filter 86 into the steering room 300.

[0065] Accordingly, when it is detected that the ammonia concentration in the outside air is equal to or higher than the preset concentration, by blocking the air circulation between the steering room 300 and the main air conditioner 40 and forcibly introducing the outside air passing through the decontamination filter 86 into the steering room 300, the intrusion of ammonia into the steering room 300 can be effectively suppressed. Therefore, when crew members or passengers take shelter in the steering room 300, the influence of ammonia on the crew members or passengers can be suppressed while continuing the navigation of the ship 1. Moreover, the countermeasure for suppressing the intrusion of ammonia only needs to be provided in the steering room 300. As a result, it is possible to reduce the cost of the countermeasure for suppressing the influence of ammonia on the crew members or passengers while continuing the navigation of the ship 1.

Explanation of Signs

[0066] 1…Ship 2…Hull 2a…Bow 2b…Stern 4…Superstructure 5A, 5B…Side 6…Bottom 7…Deck 8…Upper deck 10…Residential area 40…Main air conditioner 41…Air supply section 41m…Main air supply duct 41s…First air supply duct 41t…Second air supply duct (air supply duct) 42…Return air section 42m…Main return air duct 42s…First return air duct 42t…Second return air duct (return air duct) 43…Outside air intake duct 47…Exhaust duct 47f…Exhaust fan 47v…Closing device 50…Auxiliary air conditioner 51…Auxiliary air conditioner supply air duct 52…Auxiliary air conditioner return air duct 60…Control unit 85…Steering room outside air intake line 86…Decontamination filter 87…Supply fan 88…Steering room exhaust duct 89…Exhaust fan 91, 92…First opening / closing part 93…Second opening / closing part 95…Ammonia detection part 100…Room 100E…Dining room 100R…Living room 100T…Toilet 101…Door 120…Passageway 140…Air lock room 141…First door 142…Second door 300…Steering room 301…Opening / closing door 305…Toilet 306…Door 310…Equipment room As…Air conditioning system

Claims

1. A hull, a steering cabin provided on the hull, a main air conditioner provided on the hull, an air supply duct for supplying air from the main air conditioner to the steering cabin, a return air duct for returning the air in the steering cabin to the main air conditioner, an outside air introduction duct for introducing outside air into the main air conditioner, a steering cabin exhaust duct provided with an exhaust fan capable of forcibly discharging the air in the steering cabin, a steering cabin outside air introduction line having a decontamination filter for removing ammonia contained in the outside air and capable of forcibly introducing the outside air decontaminated by the decontamination filter into the steering cabin, a first opening / closing part for opening and closing the air supply duct and the return air duct, a second opening / closing part for opening and closing the steering cabin outside air introduction line, an ammonia detection part for detecting the ammonia concentration of the outside air, a control part for controlling the first opening / closing part and the second opening / closing part, and comprising: The control part, when an ammonia concentration equal to or higher than a preset concentration is detected by the ammonia detection part, closes the air supply duct and the return air duct by the first opening / closing part, and opens the steering cabin outside air introduction line by the second opening / closing part. A ship.

2. The control part is capable of controlling the exhaust fan, and when an ammonia concentration equal to or higher than a preset concentration is detected by the ammonia detection part, stops the exhaust fan of the steering cabin exhaust duct The ship according to Claim 1.

3. Further comprising a sub-air conditioner that sucks only the air in the steering cabin and supplies air-conditioned air into the steering cabin The ship according to Claim 1 or 2.

4. A hull, a steering cabin provided on the hull, a main air conditioner provided on the hull, an air supply duct for supplying air from the main air conditioner to the steering cabin, a return air duct for returning the air in the steering cabin to the main air conditioner, an outside air introduction duct for introducing outside air into the main air conditioner, a steering cabin exhaust duct provided with an exhaust fan capable of forcibly discharging the air in the steering cabin, a steering cabin outside air introduction line having a decontamination filter for removing ammonia contained in the outside air and capable of forcibly introducing the outside air decontaminated by the decontamination filter into the steering cabin, a first opening / closing part for opening and closing the air supply duct and the return air duct, a second opening / closing part for opening and closing the steering cabin outside air introduction line, and a method for air conditioning the air in the steering cabin of a ship comprising: a step of detecting whether the ammonia concentration of the outside air is equal to or higher than a preset concentration When it is detected that the ammonia concentration of the outside air is equal to or higher than a preset concentration, a step of blocking the circulation of air between the steering room and the main air conditioner and forcibly introducing the outside air passing through the decontamination filter into the steering room; An air conditioning method for a steering room on a ship, including the above.

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