CN112572749B

CN112572749B - Self-cleaning air purification and regulation system for personnel-intensive ship

Info

Publication number: CN112572749B
Application number: CN202011448114.4A
Authority: CN
Inventors: 邹昶方; 王晨屹; 贺毅强; 郝亮; 袁晓楠
Original assignee: Jiangsu Ocean University
Current assignee: Jiangsu Ocean University
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-31
Anticipated expiration: 2040-12-09
Also published as: CN112572749A

Abstract

The invention discloses a self-cleaning air purification and conditioning system for a personnel-intensive ship, which comprises at least one ship cabin, a fresh air unit and an FCU unit, wherein the fresh air unit is connected with the FCU unit; the inlet end and the outlet end of the FCU unit are respectively provided with a photocatalyst purification device, each photocatalyst purification device comprises a shell, a pair of filter screens, a pair of medium-short wave ultraviolet light sources, a plurality of photocatalyst nets and a long-wave ultraviolet light source, the shell is provided with an air inlet and an air outlet, the pair of medium-short wave ultraviolet light sources are respectively arranged at the air inlet and the air outlet, the pair of filter screens is arranged between the pair of medium-short wave ultraviolet light sources, the plurality of photocatalyst nets are arranged side by side and located between the pair of filter screens, and the long-wave ultraviolet light source is of a columnar structure and penetrates through the plurality of photocatalyst nets; the air exhaust assembly is arranged in the air duct of the fresh air unit, the work of the fresh air unit is controlled through a control unit and a detection module, the control unit is in signal connection with the detection module and in control connection with the air exhaust assembly, and when the detection module detects that the long-wave ultraviolet light source is powered off, the air exhaust assembly is started to work.

Description

Self-cleaning air purification and regulation system for personnel-intensive ship

Technical Field

The invention relates to the technical field of ship engineering, in particular to a self-cleaning air purification and adjustment system for a personnel-intensive ship.

Background

After the ship is out of port, when the personnel on the ship need to be isolated in a special period, the air conditioning requirement required by the cabin of the personnel brings huge challenges to the ship air conditioning system: although the probability of causing pollutants to a ship is very low when a fresh air system of the ship normally works, long and miscellaneous pipelines in the air conditioning system of the ship have huge volume and are relatively difficult to control balance and pressure, and a plurality of rooms are easy to cause relative positive pressure or negative pressure under the condition that air supply and air exhaust are unbalanced, and a closed cabin cannot balance the pressure through a window, so pollutants such as accumulated aerosol and the like can only diffuse to a corridor through a cabin door, or pollutants in the corridor diffuse to the indoor, thereby aggravating the propagation and diffusion of the pollutants in the air, causing secondary pollution and causing trouble to operation, maintenance and killing work.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a personnel-intensive marine self-cleaning air purification and conditioning system which can meet the requirement of long-time normal operation after ships leave a port, is simple in operation and maintenance and sterilization, low in secondary pollution probability and high in applicability.

Therefore, the invention provides a self-cleaning air purification and regulation system for a person-intensive ship, which comprises:

at least one marine compartment;

the fresh air unit comprises an air supply duct, a circulating fan and an air return duct;

the FCU unit comprises an inlet end, an outlet end and an outdoor air channel, the air supply air channel, the circulating fan, the inlet end, the outlet end, the marine cabin and the return air channel are sequentially communicated in an air flow mode to form a fresh air circulation loop, and the marine cabin, the outdoor air channel, the inlet end and the outlet end are sequentially communicated in an air flow mode to form an indoor air circulation loop;

the light catalytic purification device comprises a shell, a pair of filter screens, a pair of medium-short wave ultraviolet light sources, a plurality of light catalytic nets and a long-wave ultraviolet light source, wherein the shell is provided with an air inlet and an air outlet;

be provided with the subassembly of airing exhaust in the return air wind channel, still include a control unit and be used for detecting whether the detection module of long wave ultraviolet light source outage, the control unit with detection module signal connection, with the subassembly control connection of airing exhaust, the control unit configuration is: and when the detection module detects that the long-wave ultraviolet light source is powered off, the air exhaust assembly is controlled to be started to work.

In the above technical scheme, preferably, the inner side wall of the housing is coated with a photocatalyst coating.

In the above technical solution, preferably, the photocatalyst coating is nano titanium dioxide.

In the above technical solution, preferably, the photocatalyst net is attached with nano titanium dioxide particles.

In the above technical solution, preferably, the photocatalyst net has a specific porosity of 60 to 70%.

In the above technical solution, preferably, a pair of support plates extending up and down are fixed in the housing, and the pair of support plates are respectively adjacent to the air inlet and the air outlet.

In the above technical scheme, preferably, the FCU unit further includes a heat recovery assembly and a heat exchange assembly, the heat recovery assembly is at least disposed on the return air duct and configured to exchange heat with the air flow in the return air duct so as to recover the heat in the return air flow, and the heat exchange assembly is disposed on the supply air duct and configured to exchange heat with the air flow in the supply air duct so as to transfer the heat to the supply air flow.

In the above technical solution, preferably, the heat recovery assembly is a regenerator.

Among the above-mentioned technical scheme, it is preferred, heat exchange assembly includes heat transfer water route and preheating coil, the heat transfer water route includes inlet tube, wet return, inlet tube, preheating coil and wet return fluid intercommunication constitute rivers endless return circuit in proper order.

In the above technical solution, preferably, the number of the marine cabins is plural, each of the marine cabins is provided with one FCU unit, the number of the FCU units is plural, and the number of the FCU units and the fresh air unit are plural and are connected in series.

Compared with the prior art, the invention has the following advantages:

1. set up photocatalyst purification device respectively through entry end and the exit end at the FCU unit, establish ties FCU unit and new trend unit and set up, thereby when receiving the new trend that new trend unit carried, disinfect through the harmful substance in the new trend of photocatalyst purification device, then carry to marine under-deck, when the long wave ultraviolet light source trouble outage of its main disinfection effect of photocatalyst purification device, accessible detection module and the control unit control subassembly of airing exhaust are opened, thereby realize airing exhaust fast of new trend, make and produce the negative pressure in the marine under-deck, avoid external contaminated air to get into marine under-deck, cause secondary pollution.

2. The photocatalyst device adopts the medium-short wave ultraviolet light source and the long wave ultraviolet light source, most of germs retained on the filter screen are killed by the medium-short wave ultraviolet light source, and the entering fresh air is filtered by the filter screen and then killed by the long wave ultraviolet light source, so that self-cleaning can be realized, and the killing effect is better.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention;

FIG. 2 is a schematic workflow diagram of the system shown in FIG. 1;

FIG. 3 is a schematic diagram of the structure of the photocatalyst cleaning device of the system of the present invention;

FIG. 4 is a schematic flow chart of the operation of the apparatus shown in FIG. 3;

wherein the drawings are illustrated as follows:

100. a self-cleaning air purification and regulation system for a personnel-intensive ship; 1. a cabin for a ship; 2. a fresh air unit; 21. an air supply duct; 22. an air return duct; 3. an FCU unit; 31. an inlet end; 32. an outlet end; 33. an outdoor air duct; 34. a heat recovery assembly; 35. a heat exchange assembly; 351. preheating a coil pipe; 352. a water inlet pipe; 353. a water return pipe; 4. a photocatalyst purification device; 41. a housing; 411. an air inlet; 412. an air outlet; 42. a filter screen; 43. a medium-short wave ultraviolet light source; 44. a photocatalyst network; 45. a long wave ultraviolet light source; 46. a support plate; 47. photocatalyst coating; 5. an air exhaust assembly.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structures and implementations can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.

The terms "upper" and "lower" as used herein are defined relative to the structures shown in the drawings, and are relative terms, and thus may be changed according to the position and the use state. Therefore, these and other directional terms should not be construed as limiting terms. It should be noted that the FCU unit refers to a conventional FCU air conditioning system (fan coil unit for short, english name: fan coil unit), and is a terminal device of the conventional air conditioning system, and its working principle is: the air in the room where the unit is located is continuously circulated, so that the air is cooled (heated) after passing through a cold water (hot water) coil pipe, and the temperature of the room is kept constant; the forced action of the fan is mainly relied on, so that the air is heated when passing through the surface of the heater, thereby strengthening the heat convection between the radiator and the air and being capable of rapidly heating the air in the room.

Referring to fig. 1 and 2, a self-cleaning air purification and conditioning system 100 for a person-intensive ship includes a cabin 1, a fresh air unit 2, an FCU unit 3, a photocatalyst purification device 4, an exhaust assembly 5, and a control unit (not shown).

The marine cabin 1 is provided with 3, the 3 marine cabins are arranged in parallel, each marine cabin 1 is provided with an independent cabin door and an independent toilet, and one side of each marine cabin is provided with a walkway.

The fresh air unit 2 includes an air supply duct 21, a circulating fan, and a return air duct 22. The FCU unit 3 includes an inlet end 31, an outlet end 32, an outdoor air duct 33, a heat recovery assembly 34 and a heat exchange assembly 35, the air supply duct 21, the circulating fan, the inlet end 31, the outlet end 32, the marine cabin 1 and the return air duct 22 are sequentially in air flow communication to form a loop of fresh air circulation, and the marine cabin 1, the outdoor air duct 33, the inlet end 31 and the outlet end 32 are sequentially in air flow communication to form a loop of indoor air circulation.

The heat recovery assembly 34 is disposed at least on the return air duct 22 and is configured to exchange heat with the air flow in the return air duct 22 to recover heat from the return air flow, and the heat exchange assembly 35 is disposed on the supply air duct 21 and is configured to exchange heat with the air flow in the supply air duct 21 to transfer heat to the supply air flow. As a specific example of an application of the heat recovery assembly 34, the heat recovery assembly 34 is a regenerator. As a specific application example of the heat exchange assembly 35, the heat exchange assembly 35 includes a heat exchange water path and a preheating coil 351, the heat exchange water path includes a water inlet pipe 352 and a water return pipe 353, and the water inlet pipe 352, the preheating coil 351 and the water return pipe 353 are sequentially in fluid communication to form a water circulation loop.

The ship's cabin 1 is provided in plural, and each ship's cabin 1 is equipped with one FCU unit 3. Of course, the number of the ship compartments 1 is not limited to three, and may be specifically set according to the type and size of the ship, and may be applied to a single compartment of a small ship body.

In order to facilitate the sterilization of the incoming fresh air flow, a photocatalyst purification device 4 is respectively arranged at the inlet end 31 and the outlet end 32 of the FCU unit 3. The photocatalyst is used as a series of nontoxic, harmless, safe and reliable purification materials, the killing capacity of the photocatalyst on viruses and bacteria is recognized at home and abroad, the photocatalyst is used as an active purification material, cannot adsorb any toxic and harmful substances, has strong self-cleaning capacity, and is well developed in the application of various forms in the field of air purification. Meanwhile, the ultraviolet light which can stimulate the catalytic ability also has a certain sterilization and disinfection ability, and can assist the photocatalyst material to realize the functions of comprehensive sterilization and disinfection and self-cleaning.

The air return duct 22 is internally provided with an air exhaust assembly 5, and also comprises a control unit and a detection module for detecting whether the long-wave ultraviolet light source 45 is powered off, wherein the control unit is in signal connection with the detection module and is in control connection with the air exhaust assembly 5. The control unit is configured to: when the detection module detects that the long-wave ultraviolet light source 45 is powered off, the air exhaust assembly 5 is controlled to start to work. When the system is in operation, when the long-wave ultraviolet light source 45 breaks down and is powered off, the detection module sends a detection signal to the control unit, the control unit controls the air exhaust component 5 to be started and exhaust air, so that air flow of the cabin 1 for the ship is rapidly exhausted into the air return air duct 22, relative negative pressure is ensured to be generated inside the cabin 1 for the ship, pollutants cannot be diffused to a public area from the cabin 1 for the ship, and relative cleanness of each area and the cabin is ensured.

In the system, the air volume of the main air duct (i.e. the air supply duct 21) only needs to meet the requirement of fresh air, and the functions of adjusting temperature, humidity and the like can be completed by the single FCU unit, and the system has the functions of sterilization and disinfection, so the pipe diameter of the air pipe serving as the air supply duct 21 can be greatly reduced, and the duct is relatively easy to arrange.

In other embodiments, a common local FCU unit may be selected for areas with lower relative purification requirements to further simplify the difficulty of air duct arrangement and reduce costs, i.e., a plurality of FCU units 3 are arranged in parallel, and a plurality of FCU units 3 are arranged in series with the fresh air unit 2. Or the VAV system is shared with the system 100 in a public area, so that the local regulation effect is enhanced, and a certain purification capacity for pollutants such as aerosol is given to the public area.

As shown in connection with fig. 2, the workflow of system 100 is such that: the external air flow enters through the air supply duct 21 of the fresh air unit 2, is heated by the preheating coil 351 and then is sent into the FCU unit 3, and is purified by the photocatalyst purification devices 4 at the inlet end 31 and the outlet end 32 respectively, and the purified fresh air is sent into the cabin 1 for the ship. Then, a part of the return air in the cabin 1 is directly discharged into the return air duct 22 through an air outlet of the toilet to form a fresh air circulation, and the other part of the return air enters the inlet end 31 of the FCU unit 3 again through the outdoor air duct 33, is purified again and then is sent into the cabin 1 for recycling. To reduce heat dissipation, the heat recovery assembly recovers a portion of the heat stored in the return air duct 22 in preparation for transferring the heat to the incoming fresh air stream.

Referring to fig. 3 and 4, the photocatalyst purification apparatus 4 includes a housing 41, a pair of filter screens 42, a pair of short-wave ultraviolet light sources 43, a plurality of photocatalyst nets 44 and a long-wave ultraviolet light source 45, the housing 41 has an air inlet 411 and an air outlet 412, the pair of short-wave ultraviolet light sources 43 are respectively disposed at the air inlet 411 and the air outlet 412, the pair of filter screens 42 is disposed between the pair of short-wave ultraviolet light sources 43, the plurality of photocatalyst nets 44 are arranged side by side and located between the pair of filter screens 42, and the long-wave ultraviolet light source 45 has a columnar structure and penetrates through the plurality of photocatalyst nets 44.

A pair of support plates 46 extending vertically are fixed in the housing 41, and the pair of support plates 46 are respectively disposed adjacent to the air inlet 411 and the air outlet 412. The photocatalyst net 44 has a specific porosity of 60 to 70%. The photocatalyst net 44 is attached with nano titanium dioxide particles. The inner wall of the housing 41 is coated with a photocatalyst paint 47. The photocatalyst coating 47 is nano titanium dioxide. The air in the cabin 1 for the ship is actively sterilized, disinfected and purified by the combination of the photocatalyst purification net, the photocatalyst coating and ultraviolet light with different wave bands, and self-cleaning is realized by the medium-short wave ultraviolet light. Different from the traditional adsorptive passive purification, the method does not produce secondary pollution, and has efficient, lasting and stable functional action.

Referring to fig. 4, the purification process of the photocatalyst purification device 4 is as follows: fresh air enters the shell 41 from the air inlet 411, the long-wave ultraviolet light source 45 emits long-wave UVA ultraviolet light, titanium dioxide on the photocatalyst net 44 reacts and is prevented from generating ozone, meanwhile, bacteria and viruses attached to the inner side of the filter screen 42 can be killed through long-time irradiation, and the purified fresh air is discharged from the air outlet 412. The ultraviolet light source 43 on the outer side of the filter screen 42 emits medium-short wave UVB and UVC ultraviolet light, and the medium-short wave ultraviolet light source 43 can be independently turned on for a long time when the filter screen 42 needs to be cleaned or repaired and replaced, so that strong disinfection on the outer side surface of the filter screen 42 in a short time is realized.

In this embodiment, the number of the photocatalyst nets 44 can be set to 1 to 4 to ensure the air circulation rate. The novel photocatalyst coating is used as an auxiliary purification means, can still maintain the sterilization and disinfection functions for a period of time under the condition of visible light or no light, and mainly comprises Japanese sixth generation photocatalyst materials. The ultraviolet lamp with UVA long-wave band is used as a photocatalyst excitation light source and can emit ultraviolet light with the wavelength of 320-380 nm. An ultraviolet lamp capable of exciting UVB middle wave band and UVC short wave band is used as a self-cleaning ultraviolet light source, and can emit ultraviolet light with the wavelength of 200-300 nm.

The self-cleaning property of the photocatalyst material can greatly improve the normal working time of the system and reduce the operation and maintenance pressure. The bacteria and viruses attached to the filter screen 42 can be removed by irradiation of medium-short wave ultraviolet light, and the self-cleaning capability of the system is further enhanced. The photocatalyst coating 47 can purify the internal air when the long-wave ultraviolet light source 45 fails, so that the operation and maintenance personnel can be prevented from being infected during maintenance.

The sterilizing and disinfecting capability of the system can be changed by changing the intensity of the ultraviolet light source and the circulating speed of the fresh air unit, so that the system has stronger applicability. The failure of the device generally occurs on an ultraviolet lamp, the maintenance is more convenient, the coating and the photocatalyst net can still play a certain role under weak illumination after the failure, and the cabin is also in a negative pressure state, so that partial sterilization and disinfection capability can be still maintained, and the accumulation and diffusion of indoor pollutants are prevented.

In conclusion, aiming at the personnel-intensive ships represented by the luxury cruise ships, the net-shaped photocatalyst purification material is used as a purification core, ultraviolet irradiation with different wave bands and arrangement of photocatalyst coating are assisted, and the net-shaped photocatalyst purification material is combined with the traditional FCU unit in a series connection mode, so that the risk of cross infection of viruses with strong infectivity in crews is reduced by low operation and maintenance pressure, and a novel self-cleaning air purification and regulation system with active sterilization capability is formed. Passive purifying substances with adsorption characteristics do not exist in the system, the risk of secondary pollution is low, long-time normal operation after the ship leaves a port can be kept, and the maintenance and disinfection work of the system after the ship arrives is simple. In other embodiments, aiming at different occasions and environments, the energy consumption of the ship is reduced and the operation and maintenance pressure is relieved by combining a common VAV system under the premise of further keeping high-efficiency sterilization of bacteria and viruses to realize air conditioning and purification, and simultaneously the use function and the aesthetic degree of a room are not influenced.

The technical scope of the present application is not limited to the contents in the above description, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the technical spirit of the present application, and these changes and modifications should fall within the protective scope of the present application.

Claims

1. A self-cleaning air purification and conditioning system for a person-intensive ship, comprising:

at least one cabin (1) for a ship;

the fresh air unit (2) comprises an air supply duct (21), a circulating fan and a return air duct (22);

the FCU unit (3) comprises an inlet end (31), an outlet end (32) and an outdoor air channel (33), the air supply air channel (21), the circulating fan, the inlet end (31), the outlet end (32), the marine cabin (1) and the return air channel (22) are sequentially communicated in an air flow mode to form a fresh air circulating loop, and the marine cabin (1), the outdoor air channel (33), the inlet end (31) and the outlet end (32) are sequentially communicated in an air flow mode to form an indoor air circulating loop; it is characterized in that the preparation method is characterized in that,

the light catalyst purification device comprises an FCU unit (3), wherein a light catalyst purification device (4) is arranged at an inlet end (31) and an outlet end (32) of the FCU unit (3), the light catalyst purification device (4) comprises a shell (41), a pair of filter screens (42), a pair of medium-short wave ultraviolet light sources (43), a plurality of light catalyst nets (44) and a long-wave ultraviolet light source (45), the shell (41) is provided with an air inlet (411) and an air outlet (412), the medium-short wave ultraviolet light sources (43) are arranged at the air inlet (411) and the air outlet (412) respectively, the filter screens (42) are arranged between the medium-short wave ultraviolet light sources (43), the light catalyst nets (44) are arranged side by side and located between the filter screens (42), and the long-wave ultraviolet light source (45) is of a columnar structure and penetrates through the light catalyst nets (44);

be provided with air exhaust assembly (5) in return air duct (22), still include a control unit and be used for detecting whether the detection module of long wave ultraviolet source (45) outage, the control unit with detection module signal connection, with air exhaust assembly (5) control connection, the control unit configuration is: and when the detection module detects that the long-wave ultraviolet light source (45) is powered off, the air exhaust assembly (5) is controlled to start to work.

2. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: the inner side wall of the shell (41) is coated with photocatalyst paint (47).

3. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 2, characterized in that: the photocatalyst coating (47) is nano titanium dioxide.

4. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: the photocatalyst net (44) is attached with nano titanium dioxide particles.

5. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: the photocatalyst net (44) has a porosity of 60 to 70%.

6. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: a pair of support plates (46) extending up and down are fixed in the shell (41), and the pair of support plates (46) are respectively arranged close to the air inlet (411) and the air outlet (412).

7. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: the FCU unit (3) further comprises a heat recovery assembly (34) and a heat exchange assembly (35), the heat recovery assembly (34) is at least arranged on the return air duct (22) and configured to exchange heat with air flow in the return air duct (22) so as to recover heat in the return air flow, and the heat exchange assembly (35) is arranged on the supply air duct (21) and configured to exchange heat with air flow in the supply air duct (21) so as to transfer heat to the supply air flow.

8. The self-cleaning air purification and conditioning system for a personnel-intensive ship according to claim 7, characterized in that: the heat recovery assembly (34) is a regenerator.

9. The self-cleaning air purification and conditioning system for a personnel-intensive ship according to claim 7, characterized in that: the heat exchange assembly (35) comprises a heat exchange water path and a preheating coil (351), the heat exchange water path comprises a water inlet pipe (352) and a water return pipe (353), and the water inlet pipe (352), the preheating coil (351) and the water return pipe (353) are sequentially in fluid communication to form a water circulation loop.

10. The self-cleaning air purification and conditioning system for a person-intensive ship according to claim 1, characterized in that: the marine cabin (1) is provided with a plurality of cabins, each marine cabin (1) is equipped with one FCU unit (3), a plurality of FCU units (3) are arranged in parallel, and a plurality of FCU units (3) and the fresh air unit (2) are arranged in series.