Marine energy-saving variable air volume indirect air conditioner

Abstract

The invention discloses a marine energy-saving variable air volume indirect type air conditioner, and relates to the technical field of air conditioning systems, the marine energy-saving variable air volume indirect type air conditioner comprises an air conditioner assembly, the air conditioner assembly comprises an air conditioner shell, one side of the air conditioner shell is fixedly communicated with a fresh air pipeline, and an air return opening is formed in the position, close to one side, of the top of the air conditioner shell. According to the marine energy-saving variable-air-volume indirect type air conditioner, by starting a multi-stage electric push rod, a piston plate is driven to extrude a citric acid solution forwards into a return air inlet pipeline and a fresh air inlet pipeline, in the air inlet process, the citric acid solution can enter the heat exchanger body in air flow, descaling is conducted on the pipeline in the heat exchanger body, and the heat exchange efficiency is improved. Citric acid has good chelation ability and can generate chelation reaction with ions such as calcium and magnesium in incrustation to form a water-soluble complex, so that the purpose of removing the incrustation is achieved, and the citric acid has low corrosivity to stainless steel due to weak acidity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning systems, in particular to a marine energy-saving variable air volume indirect air conditioner. BACKGROUND

[0002] The cabin of a ship is a closed or semi-closed space, and air circulation relies on forced ventilation. The ship faces three extreme working conditions of vibration, tilting and salt spray during navigation. Ordinary air conditioners will directly fail. Therefore, in order to adapt to ships, ship-specific air conditioners need to be used specifically. Traditional ships widely use constant air volume centralized air conditioners, and the air supply volume is designed according to the maximum heat load. It cannot be dynamically adjusted according to the actual demand of the cabin. For example, the air supply is continuously supplied to the unoccupied cabin, resulting in energy waste. At the same time, the temperature of each cabin cannot be independently adjusted, the comfort of the crew is poor, and the temperature of the cabin is easily affected by the environment and fluctuates, making it difficult to maintain a constant temperature.

[0003] In the prior art, for example, in Chinese Patent Publication No. CN101761990B, a ship air conditioner is disclosed, which comprises an air conditioner box and a fresh air box. The air conditioner box is provided with a new return air mixing box, an air filter, an air heat exchanger, a water stop, a humidifier and a supply air fan in sequence. The front of the new return air mixing box is provided with an air return port, and the upper end of the new return air mixing box is provided with a filter poison fresh air port. The supply air fan is connected to the air outlet static pressure box. The fresh air box is provided with a fresh air regulating port, a fresh air dust filter and a double-speed fan from top to bottom. The outlet of the double-speed fan is connected to the new return air mixing box of the air conditioner box.

[0004] However, in the prior art, when the marine air conditioner is used, the return air and the outdoor air are directly mixed. However, when directly mixed, if the outdoor air temperature is too high or too low, the air conditioning system needs to consume more energy to adjust the mixed air to a suitable temperature. A heat exchanger is needed to uniformly mix the gas. However, the marine heat exchanger accumulates dirt in a humid environment, providing a good living environment for microorganisms. The large number of microorganisms will further reduce the performance of the heat exchanger and may produce odors. As the air is transported to the cabin, it affects the air quality of the cabin and the comfort of the personnel.

[0005] Therefore, we propose a marine energy-saving variable air volume indirect air conditioner to solve the problems raised in the above background. SUMMARY

[0006] The purpose of the present application is to provide a marine energy-saving variable air volume indirect air conditioner to solve the problem of the accumulation of dirt inside the heat exchanger when the return air of the return air port and the outdoor air are directly mixed.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A marine energy-saving variable air volume indirect air conditioner, comprising an air conditioner assembly, the air conditioner assembly comprises an air conditioner shell, one side of the air conditioner shell is fixedly connected with a fresh air pipeline, a return air inlet is formed at the top of the air conditioner shell near one side, a heat exchange assembly is arranged in the air conditioner shell, the heat exchange assembly comprises a heat exchanger main body, the outer surface of the heat exchanger main body is provided with a return air inlet, a return air outlet, a fresh air inlet and a fresh air outlet, one end of the return air inlet and the fresh air inlet is fixedly connected with a return air inlet pipeline and a fresh air inlet pipeline respectively, the outer surface of the return air inlet pipeline and the fresh air inlet pipeline is fixedly connected with a cleaning pipe, one end of the two cleaning pipes is fixedly connected with a conveying pipe, the opposite end of the two conveying pipes is fixedly connected with a liquid injection tank, and the inside of the liquid injection tank is injected with citric acid for cleaning the dirt inside the heat exchanger main body.

[0008] Preferably, the inner wall of the two cleaning pipes is fixedly connected with a water blocking pad, a water inlet hole is formed in the middle of the two water blocking pads, and the two water inlet holes are used for the entry of citric acid.

[0009] Preferably, the outer surface of the heat exchanger main body is fixedly connected with a support frame, the liquid injection tank is fixedly installed on the support frame, the inner wall of the liquid injection tank is slidingly connected with a piston plate, the outer surface of the piston plate is fixedly connected with a movable push rod, one end of the movable push rod slidingly penetrates the liquid injection tank to the outside thereof, the inner wall of one side of the air conditioner shell is provided with a multi-stage electric push rod, one end of the multi-stage electric push rod is fixedly connected with one end of the movable push rod.

[0010] Preferably, one end of the fresh air outlet and the return air outlet is provided with a first filter block and a second filter block, and the first filter block and the second filter block are made of active alumina filter for adsorbing the citric acid solution after cleaning.

[0011] Preferably, one end of the return air inlet pipeline is fixedly connected with a connecting pipeline, the connecting pipeline is fixedly installed at the bottom of the return air inlet, one end of the fresh air inlet pipeline is fixedly connected with one end of the fresh air pipeline, the bottom of the heat exchanger main body is fixedly connected with a mounting seat, and the mounting seat is fixedly installed on the inner bottom surface of the air conditioner shell.

[0012] Preferably, the inside of the air conditioner shell is sequentially provided with an impurity filter, a surface cooler, a front water baffle, a heater, a spray humidifier, a rear water baffle, a fan and a fixed frame from one side to the other side, one side of the fixed frame is fixedly connected with a silencer, the silencer comprises a silencer shell, a silencing groove is formed in the inside of the silencer shell, a plurality of silencing plates are fixedly connected with the inner wall of the silencing groove, a plurality of mounting buckles are engagedly connected with the outer surface of the heater, and the plurality of mounting buckles are fixedly installed on the inner wall of the air conditioner shell.

[0013] Preferably, the bottom of the air conditioner shell is fixedly connected with two mounting racks, the top of the air conditioner shell is provided with a control panel, the top of the air conditioner shell is provided with an air outlet near the other side, the front surface of the air conditioner shell is provided with a protective plate through bolts, and the inside of the air outlet is provided with a variable air volume assembly.

[0014] Preferably, the variable air volume assembly comprises a damper, the bottom of the damper is provided with a mounting groove, and the inner wall of the mounting groove is movably clamped with a filter screen.

[0015] Preferably, the variable air volume assembly further comprises a mounting block, the outer surface of the mounting block is provided with an electric push rod, one end of the electric push rod is fixedly connected with a push block, the bottom of the push block is fixedly connected with a driving long plate, the top of the driving long plate is provided with a limiting sliding groove near both ends, the inner walls of the two limiting sliding grooves are movably connected with limiting blocks, and the two limiting blocks are fixedly installed on the top of the air conditioner shell, the top of the driving long plate is fixedly connected with a row of teeth, the two sides of the air outlet are provided with a plurality of rotating holes, the inner walls between every two rotating holes are rotatably connected with a rotating rod, the outer surface of each rotating rod is fixedly connected with an air volume adjusting plate, one end of each rotating rod is fixedly connected with an adjusting gear, and the outer surfaces of the plurality of adjusting gears are meshingly connected with the top of the row of teeth.

[0016] Preferably, the top of the air conditioner shell is provided with a monitoring assembly, the monitoring assembly comprises a mounting base, the inside of the mounting base is provided with a forward and reverse motor, the output shaft of the forward and reverse motor is fixedly connected with a rotating plate, the top of the rotating plate is provided with an infrared sensor and a camera, and the infrared sensor and the camera are used for monitoring the personnel flow in the cabin internal space.

[0017] Compared with the prior art, the present application has the following advantages: 1、In use, by starting the multi-stage electric push rod, the piston plate is driven to extrude the citric acid solution into the return air inlet pipeline and the fresh air inlet pipeline, in the process of air inlet, the citric acid solution enters the inside of the heat exchanger main body in the airflow, and the heat exchanger main body internal pipeline is descaled, the citric acid has good chelating ability, can react with calcium, magnesium and other ions in the scale to form a complex that can be dissolved in water, so as to achieve the purpose of removing scale, and because the citric acid is weakly acidic, the corrosion to stainless steel is very small, through the heat exchange assembly, the return air and fresh air can complete heat exchange before mixing in the mixing area, and the active alumina has strong adsorption performance and can adsorb the citric acid solution.

[0018] 2、In use, when the cabin carbon dioxide concentration is too high, the appropriate increase in fresh air ratio, mixed air into the impurity filter, impurity filter will filter out the dust, impurities and other air, air purification, in summer cooling case, filtered air into the surface cooler, the low temperature refrigerant in the surface cooler absorbs the heat in the air, the air temperature is reduced, through the front water baffle will block these condensation water droplets, prevent them from entering the subsequent components, after the surface cooler treatment of air, if the temperature still not reach the set requirements, will enter the heater to heat up, if the cabin humidity is low, the air will be through the spray humidifier to increase the humidity, through the back water baffle again to block the water droplets, ensure the dryness of the air, after the adjustment of the gas, the fan will be sent into the cabin, the fan will produce noise when running, through the silencer can reduce the noise of the fan running and gas flow, to reduce the impact on the cabin staff.

[0019] 3、In use, the air volume of the air conditioner to the cabin is automatically adjusted by the variable air volume assembly, so that the air supply can be realized according to the demand, the cabin is monitored by starting the forward and reverse motor, when a staff enters the cabin, the air volume can be increased by the infrared sensor combined with the camera, when there is no one in the cabin, the air volume can be correspondingly reduced, so that the energy can be saved, the electric push rod is started by the control system, so as to drive the adjusting gear to rotate forward and reverse, when all the air volume adjusting plates are turned to horizontal, the air volume will be small, when the blades of all the air volume adjusting plates are parallel, the air outlet is opened as a whole, and the air volume is maximum, the filter screen is clamped into the installation slot, so that the impurities in the air conditioner are filtered out and then delivered to the cabin. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a first perspective view of the marine energy-saving variable air volume indirect air conditioner. Figure 2 It is a second perspective view of the marine energy-saving variable air volume indirect air conditioner. Figure 3 It is a part of the air conditioner assembly of the marine energy-saving variable air volume indirect air conditioner. Figure 4 It is a part of the monitoring assembly of the marine energy-saving variable air volume indirect air conditioner. Figure 5 It is a part of the variable air volume assembly of the marine energy-saving variable air volume indirect air conditioner. Figure 6 It is a part of the variable air volume assembly of the marine energy-saving variable air volume indirect air conditioner. Figure 5 It is an enlarged view of B in the marine energy-saving variable air volume indirect air conditioner. Figure 7 It is an enlarged view of A in the marine energy-saving variable air volume indirect air conditioner. Figure 5 It is an enlarged view of A in the marine energy-saving variable air volume indirect air conditioner.Figure 8 Figure 1 is a perspective view of a sound muffler part of a marine energy-saving variable air volume indirect air conditioner according to the present application; Figure 9 Figure 2 is a perspective view of a heat exchange assembly part of a marine energy-saving variable air volume indirect air conditioner according to the present application from a first viewing angle; Figure 10 Figure 3 is a perspective view of a heat exchange assembly part of a marine energy-saving variable air volume indirect air conditioner according to the present application from a second viewing angle; Figure 11 Figure 4 is a perspective view of a marine energy-saving variable air volume indirect air conditioner according to the present application; Figure 10 Figure 5 is an enlarged view of part C in Figure 4.

[0021] In the figure: 1. air conditioner assembly; 101, air conditioner shell; 102, mounting bracket; 103, protective plate; 104, return air inlet; 105, fresh air duct; 106, impurity filter; 107, mounting buckle; 108, surface cooler; 109, front water baffle; 110, heater; 111, spray humidifier; 112, rear water baffle; 113, fan; 114, fixed frame; 115, sound muffler; 1151, sound muffler shell; 1152, sound muffler groove; 1153, sound muffling plate; 116, control panel; 117, air supply outlet; 2, monitoring assembly; 201, mounting base; 202, forward and reverse motor; 203, rotating plate; 204, infrared sensor; 205, camera; 3, variable air volume assembly; 301, push block; 302, electric push rod; 303, drive long plate; 304, limit block; 305, limit sliding groove; 306, air volume adjusting plate; 307, rotating rod; 308, mounting block; 309, row of teeth; 310, adjusting gear; 311, rotating hole; 312, damper; 313, filter screen; 314, mounting groove; 4, heat exchange assembly; 401, heat exchanger main body; 402, return air inlet; 403, return air inlet duct; 404, connecting duct; 405, fresh air outlet; 406, first filter block; 407, fresh air inlet; 408, fresh air inlet duct; 409, return air outlet; 410, second filter block; 411, multi-stage electric push rod; 412, movable push rod; 413, liquid injection tank; 414, delivery pipe; 415, piston plate; 416, support frame; 417, cleaning pipe; 418, water blocking pad; 419, water inlet hole; 420, mounting seat. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0023] Embodiment one: refer toFigures 1-11 As shown, the present application provides a technical scheme: a marine energy-saving variable air volume indirect air conditioner, comprising an air conditioner assembly 1, the air conditioner assembly 1 comprises an air conditioner shell 101, one side of the air conditioner shell 101 is fixedly connected with a fresh air duct 105, a return air inlet 104 is formed at the top of the air conditioner shell 101 close to one side, a heat exchange assembly 4 is arranged in the air conditioner shell 101, the heat exchange assembly 4 comprises a heat exchanger main body 401, the outer surface of the heat exchanger main body 401 is provided with a return air inlet 402, a return air outlet 409, a fresh air inlet 407 and a fresh air outlet 405, one end of the return air inlet 402 and the fresh air inlet 407 is fixedly connected with a return air inlet pipe 403 and a fresh air inlet pipe 408 respectively, the outer surface of the return air inlet pipe 403 and the fresh air inlet pipe 408 is fixedly connected with a cleaning pipe 417, one end of the two cleaning pipes 417 is fixedly connected with a conveying pipe 414, the opposite end of the two conveying pipes 414 is fixedly connected with a liquid injection tank 413, and the inside of the liquid injection tank 413 is injected with citric acid, which is used to clean the dirt inside the heat exchanger main body 401, the inner wall of the two cleaning pipes 417 is fixedly connected with a water blocking pad 418, the middle of the two water blocking pads 418 is provided with a water inlet hole 419, and the two water inlet holes 419 are used for the entry of citric acid, the outer surface of the heat exchanger main body 401 is fixedly connected with a support frame 416, the liquid injection tank 413 is fixedly installed on the support frame 416, the inner wall of the liquid injection tank 413 is slidably connected with a piston plate 415, the outer surface of the piston plate 415 is fixedly connected with a movable push rod 412, one end of the movable push rod 412 is slidably penetrated through the liquid injection tank 413 to the outside thereof, the inner wall of one side of the air conditioner shell 101 is provided with a multi-stage electric push rod 411, one end of the multi-stage electric push rod 411 is fixedly connected with one end of the movable push rod 412, one end of the fresh air outlet 405 and the return air outlet 409 is provided with a first filter block 406 and a second filter block 410, and the first filter block 406 and the second filter block 410 are made of activated alumina filter, which is used to adsorb the citric acid solution after cleaning, one end of the return air inlet pipe 403 is fixedly connected with a connecting pipe 404, the connecting pipe 404 is fixedly installed at the bottom of the return air inlet 104, one end of the fresh air inlet pipe 408 is fixedly connected with one end of the fresh air duct 105, the bottom of the heat exchanger main body 401 is fixedly connected with a mounting seat 420, the mounting seat 420 is fixedly arranged in the inner bottom surface of the air conditioner shell 101, a variable air volume assembly 3 is arranged in the inside of the air outlet 117, and a monitoring assembly 2 is arranged at the top of the air conditioner shell 101.

[0024] In this embodiment, when in use, the heat exchange assembly 4 can make the return air and fresh air complete heat exchange before mixing in the mixing area, so that the gas outside the ship and the gas in the cabin can be balanced in heat before mixing, when the temperature difference between indoor and outdoor is too large, the fresh air and return air after heat exchange, so as to reduce the temperature of the overheated gas, at the same time, the temperature of the overcooled gas is increased, the return air enters the connecting pipeline 404 through the return air inlet 104, then enters the heat exchanger main body 401 from the return air inlet 402, the fresh air enters the fresh air inlet pipeline 408 through the fresh air pipeline 105, then enters the heat exchanger main body 401 from the fresh air inlet 407, the two kinds of gas are discharged from the fresh air outlet 405 and the return air outlet 409 respectively, when discharging, the first filter block 406 and the second filter block 410 can absorb the remaining amount of cleaning citric acid solution, the first filter block 406 and the second filter block 410 adopt activated alumina, which is a porous and high dispersion solid material with large specific surface area and strong adsorption performance, it can not only adsorb citric acid solution, but also has certain adsorption effect on some inorganic impurity ions, when cleaning the pipeline inside the heat exchanger main body 401, citric acid solution is injected into the injection tank 413, citric acid has good chelating ability, can react with calcium, magnesium and other ions in the scale to form a complex that can be dissolved in water, so as to achieve the purpose of removing scale, and because the acidity of citric acid is weak, the corrosion to stainless steel is small, as long as the cleaning time and temperature are controlled, the stainless steel sheet will not be damaged, by starting the multi-stage electric push rod 411, so as to drive the movable push rod 412 to stretch and retract, and then drive the piston plate 415 to slide in the injection tank 413, when the piston plate 415 extrudes the citric acid solution forward, the solution can be extruded into the two delivery pipes 414, under the action of pressure, the solution will pass through the water inlet hole 419 and enter the return air inlet pipeline 403 and the fresh air inlet pipeline 408 respectively, in the process of air inlet, the citric acid solution will enter the heat exchanger main body 401 inside the airflow, and the pipeline inside the heat exchanger main body 401 is descaled, wherein the material of the water blocking pad 418 is corrosion-resistant rubber, which will automatically close the leakage when not under pressure.

[0025] Embodiment two: Figures 1-11As shown, the inside of the air conditioner shell 101 is sequentially provided with the impurity filter 106, the surface cooler 108, the front water baffle 109, the heater 110, the spray humidifier 111, the rear water baffle 112, the fan 113 and the fixed frame 114 from one side to the other side. One side of the fixed frame 114 is fixedly connected with the silencer 115, the silencer 115 comprises a silencer shell 1151, the inside of the silencer shell 1151 is provided with a silencer groove 1152, the inner wall of the silencer groove 1152 is fixedly connected with a plurality of sound-absorbing plates 1153, the outer surface of the heater 110 is clampingly connected with a plurality of mounting buckles 107, the plurality of mounting buckles 107 are all fixedly installed on the inner wall of the air conditioner shell 101, the bottom of the air conditioner shell 101 is fixedly connected with two mounting racks 102, the top of the air conditioner shell 101 is provided with a control panel 116, the top of the air conditioner shell 101 is provided with an air outlet 117 close to the other side, the front surface of the air conditioner shell 101 is provided with a protective plate 103 through bolts, the inside of the air outlet 117 is provided with the variable air volume assembly 3, one end of the return air inlet pipeline 403 is fixedly communicated with the connecting pipeline 404, the connecting pipeline 404 is fixedly installed at the bottom of the return air inlet 104, one end of the fresh air inlet pipeline 408 is fixedly communicated with one end of the fresh air pipeline 105.

[0026] In use, in the embodiment, fresh air outside the ship enters from the fresh air pipeline 105, return air in the cabin enters the air conditioner from the return air inlet 104, and the gases at the two places are mixed in the mixing area. The mixed air is heated by the heat exchanger main body 401 to ensure uniform temperature and avoid overcooling of the fresh air outside the ship. When the carbon dioxide concentration in the cabin is too high, the proportion of fresh air is appropriately increased. The mixed air enters the impurity filter 106, which filters out dust and impurities in the air to purify the air. In the case of cooling in summer, the filtered air enters the surface cooler 108. The low-temperature refrigerant in the surface cooler 108 absorbs the heat in the air, so that the temperature of the air is reduced. At the same time, due to the decrease in temperature, the water vapor in the air condenses into water droplets, realizing the dehumidification function. At this time, the condensed water droplets are blocked by the front water baffle 109 to prevent them from entering the subsequent components. The air treated by the surface cooler 108 is heated and warmed by the heater 110 if the temperature does not reach the set requirement. If the humidity in the cabin is low, the air passes through the spray humidifier 111 to increase the humidity. The rear water baffle 112 blocks the water droplets again to ensure the dryness of the air. The adjusted gas is pressurized by the fan 113 and then sent into the cabin of the ship. The fan 113 produces noise when it operates. The silencer 115 can reduce the noise generated by the operation of the fan 113 and the flow of gas to reduce the impact on the cabin staff. The sound-absorbing plates 1153 installed on the inner wall of the silencer groove 1152 are wave-shaped foam plates, which can weaken and absorb part of the sound, thereby having a good sound-absorbing effect.

[0027] Embodiment three: Figures 1-11 As shown, the top of the air conditioner shell 101 is provided with a control panel 116, the variable air volume assembly 3 includes a damper 312, the bottom of the damper 312 is provided with a mounting groove 314, the inner wall of the mounting groove 314 is movably clamped with a filter screen 313, the variable air volume assembly 3 further includes a mounting block 308, the outer surface of the mounting block 308 is provided with an electric push rod 302, one end of the electric push rod 302 is fixedly connected with a push block 301, the bottom of the push block 301 is fixedly connected with a driving long plate 303, the top of the driving long plate 303 is provided with a limiting sliding groove 305 near both ends, the inner wall of the two limiting sliding grooves 305 is movably connected with a limiting block 304, the two limiting blocks 304 are both fixedly installed on the top of the air conditioner shell 101, the top of the driving long plate 303 is fixedly connected with a row of teeth 309, the two sides of the air outlet 117 are both provided with a plurality of rotating holes 311, the inner wall between every two rotating holes 311 is rotatably connected with a rotating rod 307, the outer surface of each rotating rod 307 is fixedly connected with an air volume adjusting plate 306, one end of each rotating rod 307 is fixedly connected with an adjusting gear 310, the outer surface of the plurality of adjusting gears 310 is meshingly connected with the top of the row of teeth 309, the top of the air conditioner shell 101 is provided with a monitoring assembly 2, the monitoring assembly 2 includes a mounting base 201, the inside of the mounting base 201 is provided with a forward-reverse motor 202, the output shaft of the forward-reverse motor 202 is fixedly connected with a rotating plate 203, the top of the rotating plate 203 is provided with an infrared sensor 204 and a camera 205, and the infrared sensor 204 and the camera 205 are used to monitor the personnel flow in the cabin interior space.

[0028] In this embodiment, in use, the air volume of the air conditioner to the cabin is automatically adjusted by the variable air volume assembly 3, thereby realizing on-demand air supply. By starting the forward and reverse motor 202, the output shaft rotates, thereby driving the rotating plate 203 to rotate. The rotating plate 203 is constantly forward and reverse, and can constantly monitor the cabin. When a staff enters the cabin, the air volume can be increased. When there is no one inside the cabin, the air volume is correspondingly reduced, thereby saving energy. The infrared sensor 204 can detect the infrared radiation emitted by the human body. When a person enters the sensing range of the infrared sensor 204, the infrared radiation emitted by the human body will be detected by the infrared sensor 204. The infrared sensor 204 transmits the signal to the air conditioner control system, and judges that there is a person. The air supply amount is increased. When the staff leaves the sensing range for a period of time, the infrared sensor 204 cannot detect the human body infrared, and the control system reduces the air supply amount. At the same time, combined with the camera 205, whether there is a person in the cabin and the number and activity state of the person can be accurately identified. When a person is detected, the air supply amount is increased. In addition, according to the number of personnel, the air supply amount can be more finely adjusted. When adjusting the air volume, the control system starts the electric push rod 302 to extend and retract, thereby driving the driving long plate 303 to reciprocate. At this time, the limiting sliding groove 305 is sleeved outside the limiting block 304, which can limit the driving long plate 303. When the driving long plate 303 moves left and right with the row of teeth 309, the row of teeth 309 is engaged with the adjusting gear 310, thereby driving the adjusting gear 310 to rotate forward and reverse. When all the air volume adjusting plates 306 are turned to horizontal, the air volume will be reduced. When the blades of all the air volume adjusting plates 306 are parallel, the air outlet 117 is completely opened, and the air volume is the largest. By clamping the filter screen 313 into the installation slot 314, the impurities in the air conditioner are filtered out before being delivered to the cabin.

[0029] The method for using the device and the working principle: in use, the fresh air outside the ship from the fresh air duct 105 into the cabin, the return air from the return air inlet 104 into the air conditioner, the two gas mixing area for mixing, mixed between the heat exchanger main body 401 heat transfer, to ensure uniform temperature, to avoid the situation of the new air outside the ship supercooling, when the cabin carbon dioxide concentration is too high, the appropriate increase in the proportion of fresh air, mixed air into the impurity filter 106, the impurity filter 106 will filter out the dust, impurities and other air purification, in summer cooling case, filtered air into the surface cooler 108, the low temperature refrigerant in the surface cooler 108 absorbs the heat in the air, the air temperature decreases, at the same time, due to the temperature drop, the water vapor in the air will condense into water droplets, at this time, by the front water baffle 109 will block these condensation water droplets, prevent them from entering the subsequent components, after the surface cooler 108 processing air, if the temperature still not reach the set requirements, will enter the heater 110 heating, if the humidity in the cabin is low, the air will be through the spray humidifier 111 increase humidity, through the back water baffle 112 again to block the water droplets generated, to ensure the dryness of the air, after the adjustment of the gas, by the fan 113 pressurized will be sent into the cabin of the ship, in the fan 113 operation will produce noise, through the muffler 115 can reduce the noise of the fan 113 operation and gas flow, wherein, the sound absorbing plate 1153 installed in the inner wall of the sound absorbing groove 1152 is a wave-shaped foam plate, which can weaken the sound and absorb part of the sound, thereby having good sound absorbing effect, in use, through the heat exchange assembly 4 can make the return air and fresh air complete heat exchange before mixing in the mixing area, so that the gas outside the ship and the gas in the cabin heat balance before mixing, when the temperature difference between indoor and outdoor is too large, the fresh air and the return air after heat exchange, so as to reduce the temperature of the overheated gas, at the same time, the temperature of the supercooled gas is increased, the return air enters the connecting pipe 404, the return air inlet pipe 403, and then enters the heat exchanger main body 401 from the return air inlet 402, the fresh air enters the fresh air inlet pipe 408 from the fresh air duct 105, and then enters the heat exchanger main body 401 from the fresh air inlet 407, the two kinds of gas are discharged from the fresh air outlet 405 and the return air outlet 409 respectively, when discharging, the first filter block 406 and the second filter block 410 can absorb the remaining amount of cleaning citric acid solution, the first filter block 406 and the second filter block 410 adopt activated alumina, which is a kind of porous, high dispersion solid material, with large specific surface area and strong adsorption performance. It can not only adsorb citric acid solution, but also has certain adsorption effect on some inorganic impurity ions. When cleaning the internal pipeline of the heat exchanger main body 401, citric acid solution is injected into the injection tank 413. Citric acid has good chelating ability and can react with calcium, magnesium and other ions in scale to form a complex that can be dissolved in water, thereby removing scale. And because citric acid is weakly acidic,The corrosion to stainless steel is very small, as long as the cleaning time and temperature are controlled, it will not cause damage to the stainless steel sheet, by starting the multi-stage electric push rod 411, so as to drive the movable push rod 412 to stretch out and retract, and further drive the piston plate 415 to slide inside the liquid injection tank 413, when the piston plate 415 extrudes the citric acid solution forward, the solution can be extruded into the two conveying pipes 414, under the action of pressure, the solution will pass through the water inlet hole 419 and enter the return air inlet pipeline 403 and the fresh air inlet pipeline 408 respectively, in the process of air inlet, the citric acid solution will enter the heat exchanger main body 401 inside the airflow, wherein the water blocking pad 418 is made of corrosion-resistant rubber, which will automatically close the leakage when not under pressure, in use, the variable air volume assembly 3 automatically adjusts the air volume of the air conditioner to the cabin, so as to realize on-demand air supply, by starting the forward and reverse motor 202, the output shaft rotates, thereby driving the rotating plate 203 to rotate, the rotating plate 203 is constantly forward and reverse, which can constantly monitor the cabin, when a staff enters the cabin, the air volume can be increased, when there is no one inside the cabin, the air volume can be correspondingly reduced, thereby saving energy, the infrared sensor 204 can detect the infrared radiation emitted by the human body, when a person enters the sensing range of the infrared sensor 204, the infrared radiation emitted by the human body will be detected by the infrared sensor 204, the infrared sensor 204 transmits the signal to the air conditioner control system, and judges that there is a person, so as to increase the air supply, when the staff leaves the sensing range for a period of time, the infrared sensor 204 cannot detect the human body infrared, the control system reduces the air supply, at the same time, combined with the camera 205, the number of people in the cabin and the activity state can be accurately identified, when a person is detected, the air supply is increased, in addition, according to the number of people, the air supply can be more finely adjusted, when adjusting the air volume, the control system starts the electric push rod 302, so that it stretches out and retracts, thereby driving the driving long plate 303 to reciprocate, at this time, the limiting sliding groove 305 is sleeved outside the limiting block 304, which can limit the driving long plate 303, when the driving long plate 303 moves left and right with the row of teeth 309, the row of teeth 309 is engaged with the adjusting gear 310, thereby driving the adjusting gear 310 to rotate forward and backward, when all the air volume adjusting plates 306 are turned to horizontal, the air volume will be smaller, when the blades of all the air volume adjusting plates 306 are parallel, the air outlet 117 is completely opened, and the air volume is the largest, by clamping the filter screen 313 into the installation slot 314, the impurities in the air conditioner are filtered out before being delivered to the cabin.

[0030] The wiring diagram of the control panel 116, the forward-reverse motor 202, the infrared sensor 204, the camera 205, the electric push rod 302 and the multi-stage electric push rod 411 in the application belongs to the common knowledge in the art, and the working principle is a known technology, and the model is selected according to actual use. Therefore, the control mode and wiring arrangement of the control panel 116, the forward-reverse motor 202, the infrared sensor 204, the camera 205, the electric push rod 302 and the multi-stage electric push rod 411 are not explained in detail.

[0031] Although the application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalents by those skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A marine energy-saving variable air volume indirect air conditioner, comprising an air conditioning unit assembly (1), the air conditioning unit assembly (1) including an air conditioning housing (101), a fresh air duct (105) fixedly connected to one side of the air conditioning housing (101), a return air vent (104) opened on the top of the air conditioning housing (101) near one side, and a heat exchange assembly (4) disposed inside the air conditioning housing (101), characterized in that: The heat exchange assembly (4) includes a heat exchanger body (401). The outer surface of the heat exchanger body (401) is provided with a return air inlet (402), a return air outlet (409), a fresh air inlet (407), and a fresh air outlet (405). One end of the return air inlet (402) and the fresh air inlet (407) are respectively fixedly connected to a return air inlet pipe (403) and a fresh air inlet pipe (408). The outer surfaces of the return air inlet pipe (403) and the fresh air inlet pipe (408) are both fixedly connected to a cleaning pipe (417). One end of each of the two cleaning pipes (417) is fixedly connected to a delivery pipe (414). The opposite ends of the two delivery pipes (414) are fixedly connected to a liquid injection tank (413). Citric acid is injected into the liquid injection tank (413) for cleaning the dirt inside the heat exchanger body (401).

2. The marine energy-saving variable air volume indirect air conditioner according to claim 1, characterized in that: The inner walls of the two cleaning tubes (417) are fixedly connected with water-blocking pads (418), and water inlet holes (419) are opened in the middle of the two water-blocking pads (418), and the two water inlet holes (419) are used for the entry of citric acid.

3. The marine energy-saving variable air volume indirect air conditioner according to claim 2, characterized in that: A support frame (416) is fixedly connected to the outer surface of the heat exchanger body (401). The liquid injection tank (413) is fixedly installed on the support frame (416). A piston plate (415) is slidably connected to the inner wall of the liquid injection tank (413). A movable push rod (412) is fixedly connected to the outer surface of the piston plate (415). One end of the movable push rod (412) slides through the liquid injection tank (413) to its outside. A multi-stage electric push rod (411) is provided on one side of the inner wall of the air conditioner housing (101). One end of the multi-stage electric push rod (411) is fixedly connected to one end of the movable push rod (412).

4. The marine energy-saving variable air volume indirect air conditioner according to claim 3, characterized in that: The fresh air outlet (405) and the return air outlet (409) are each provided with a first filter block (406) and a second filter block (410) at one end. The first filter block (406) and the second filter block (410) are both made of activated alumina for adsorbing the citric acid solution after cleaning.

5. The marine energy-saving variable air volume indirect air conditioner according to claim 4, characterized in that: One end of the return air intake pipe (403) is fixedly connected to a connecting pipe (404), and the connecting pipe (404) is fixedly installed at the bottom of the return air inlet (104). One end of the fresh air intake pipe (408) is fixedly connected to one end of the fresh air pipe (105). The bottom of the heat exchanger body (401) is fixedly connected to a mounting base (420), and the mounting base (420) is fixed to the inner bottom surface of the air conditioner casing (101).

6. The marine energy-saving variable air volume indirect air conditioner according to claim 5, characterized in that: The air conditioner housing (101) is provided with an impurity filter (106), a surface cooler (108), a front baffle (109), a heater (110), a spray humidifier (111), a rear baffle (112), a fan (113), and a fixing frame (114) in sequence from one side to the other. A silencer (115) is fixedly connected to one side of the fixing frame (114). The silencer (115) includes a silencer housing (1151). A silencer groove (1152) is opened inside the silencer housing (1151). Multiple silencer plates (1153) are fixedly connected to the inner wall of the silencer groove (1152). Multiple mounting buckles (107) are snapped onto the outer surface of the heater (110). All of the mounting buckles (107) are fixedly installed on the inner wall of the air conditioner housing (101).

7. The marine energy-saving variable air volume indirect air conditioner according to claim 6, characterized in that: Two mounting brackets (102) are fixedly connected to the bottom of the air conditioner housing (101). A control panel (116) is provided on the top of the air conditioner housing (101). An air outlet (117) is provided on the top of the air conditioner housing (101) near the other side. A protective plate (103) is installed on the front surface of the air conditioner housing (101) by bolts. A variable air volume component (3) is provided inside the air outlet (117).

8. The marine energy-saving variable air volume indirect air conditioner according to claim 7, characterized in that: The variable air volume component (3) includes a damper (312), and the bottom of the damper (312) is provided with an installation groove (314), and a filter screen (313) is movably engaged on the inner wall of the installation groove (314).

9. The marine energy-saving variable air volume indirect air conditioner according to claim 8, characterized in that: The variable air volume component (3) also includes a mounting block (308). An electric push rod (302) is provided on the outer surface of the mounting block (308). A push block (301) is fixedly connected to one end of the electric push rod (302). A drive plate (303) is fixedly connected to the bottom of the push block (301). Limiting grooves (305) are provided on the top of the drive plate (303) near both ends. Limiting blocks (304) are movably connected to the inner walls of the two limiting grooves (305). The two limiting blocks (304) are fixedly installed on the air conditioner casing. At the top of (101), the top of the drive plate (303) is fixedly connected with a toothed rack (309). Multiple rotating holes (311) are provided on both sides of the air outlet (117). A rotating rod (307) is rotatably connected between the inner walls of every two rotating holes (311). An air volume regulating plate (306) is fixedly connected to the outer surface of each rotating rod (307). An adjusting gear (310) is fixedly connected to one end of each rotating rod (307). The outer surfaces of multiple adjusting gears (310) are meshed with the top of the toothed rack (309).

10. The marine energy-saving variable air volume indirect air conditioner according to claim 9, characterized in that: A monitoring component (2) is provided on the top of the air conditioner housing (101). The monitoring component (2) includes a mounting base (201). A forward and reverse motor (202) is provided inside the mounting base (201). A rotating plate (203) is fixedly connected to the output shaft of the forward and reverse motor (202). An infrared sensor (204) and a camera (205) are provided on the top of the rotating plate (203). The infrared sensor (204) and the camera (205) are used to monitor the flow of people in the cabin.

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