A marine dual-cold-source heat energy saving and controlling air conditioning unit

Abstract

The application discloses a marine double-cold-source heat energy saving and controlling air conditioning unit and relates to the technical field of air conditioning units. The marine double-cold-source heat energy saving and controlling air conditioning unit comprises an outer frame, a controller is arranged on the inner bottom surface of the outer frame close to the front surface, and a compression refrigerating machine for providing stable refrigerating capacity is arranged on the inner side edge of the outer frame. The marine double-cold-source heat energy saving and controlling air conditioning unit guarantees the efficient utilization of ship exhaust gas, fixedly connects a medium-temperature exhaust gas pipeline in the ship with a first three-way pipe, preheats the heat conducting oil, and when the high-temperature exhaust gas in the smoke heat exchanger is insufficient to normally provide stable high-temperature heat source for the absorption refrigerating machine, the heat conducting oil can be preheated in the preheating bin and then rapidly heated in the smoke heat exchanger, so that the temperature of the heat conducting oil is rapidly raised, the stable operation of the absorption refrigerating machine is guaranteed, and the ship exhaust gas is efficiently utilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning unit, in particular to a marine dual cold source heat energy saving control air conditioning unit. BACKGROUND

[0002] The marine air conditioning unit is an air conditioning device specially designed for the ship environment, mainly used for adjusting the temperature, humidity, air cleanliness and air flow speed in the ship cabin, such as the bridge, passenger cabin, crew rest room and cargo cabin, to provide a suitable environment for the crew, passengers and cargo, and also to adapt to the specific operating conditions of the ship. Through the refrigeration and heating system, the temperature in the cabin is controlled within the set range to adapt to the environmental temperature difference of different marine areas. The marine dual cold source heat energy air conditioning unit is designed for the ship environment, which uses a compression type refrigeration unit as the main cold source, uses refrigerant circulation refrigeration, and at the same time, uses the waste heat of the ship to drive an absorption type refrigeration device as an auxiliary cold source. According to the cooling capacity demand and the ship operating condition, the cold source can be intelligently switched or the main and auxiliary cold sources can be cooperated to work to meet the refrigeration demand and improve the energy efficiency.

[0003] The existing marine dual cold source heat energy control air conditioning unit has a large temperature span of exhaust, cylinder liner water and oil cooling in the ship main engine and generator equipment, generally in the range of 50-400℃. Due to the change of main engine load with the speed of the ship during navigation, the waste heat flow and temperature fluctuate greatly. When using an absorption type refrigeration machine for cooling, due to the large temperature span of waste heat, the waste heat temperature may be too high or too low, which may easily lead to waste heat "discontinuity" and "overload", affecting the operation efficiency of the air conditioning system itself, and also affecting the energy consumption of the ship, resulting in waste of resources.

[0004] Therefore, we propose a marine dual cold source heat energy saving control air conditioning unit to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a marine dual cold source heat energy saving control air conditioning unit to solve the problem of the above background technology that the large fluctuation of ship exhaust gas temperature easily affects the normal operation of the air conditioning system and causes waste of resources.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a marine double-cold-source heat energy saving and controlling air conditioning unit, comprising an outer frame, a controller is arranged on the inner bottom surface of the outer frame close to the front surface, a compression refrigerating machine for providing stable refrigerating capacity is arranged on the inner side of the outer frame close to the edge, a low-temperature heat exchange assembly for recycling low-temperature preheating generated in a ship is arranged on the inner side of the outer frame close to the front surface, a high-temperature heating assembly for recycling high-temperature waste heat in the ship is arranged on the inner side of the outer frame close to the center, the high-temperature heating assembly comprises an absorption refrigerating machine and a flue gas heat exchanger, a medium-temperature preheating assembly is arranged at the bottom of the high-temperature heating assembly, the medium-temperature preheating assembly comprises a preheating bin for preheating heat-conducting oil, a leaky plate is fixedly installed between the opposite inner walls of the preheating bin close to the center, two extrusion plates are slidably connected to the inner walls of the preheating bin, and a heat exchange coil for preheating heat-conducting oil is fixedly connected to the inner walls of the preheating bin, the medium-temperature waste heat enters the heat exchange coil to preheat the heat-conducting oil in the preheating bin, and then is transported to the inside of the flue gas heat exchanger to be rapidly heated to the required temperature and then is transported to the inside of the absorption refrigerating machine.

[0007] Preferably, the medium-temperature preheating assembly further comprises a first three-way pipe, three limiting rings are fixedly installed between the opposite inner walls of the preheating bin, a second three-way pipe is fixedly communicated with one end of the heat exchange coil, a drainage pipe is fixedly communicated with the outer surface of one side of the preheating bin, and a first intelligent control valve is arranged on the outer surface of the drainage pipe close to the bottom end.

[0008] Preferably, second intelligent control valves are arranged on the outer surfaces of the drainage pipe close to the two ends, two communication pipes are fixedly communicated with the outer surfaces of the other sides of the preheating bin, hollow conical sleeves are fixedly installed on the inner walls of the two communication pipes close to one end, connecting rods are fixedly connected between the opposite inner walls of the two hollow conical sleeves, springs are arranged on the outer surfaces of the two connecting rods close to the center, and one end of each of the two springs is fixedly connected with a sealing element.

[0009] Preferably, the bottom of the preheating bin is fixedly connected with the inner bottom surface of the outer frame, the two ends of the heat exchange coil are respectively fixedly penetrated through the opposite outer parts of the preheating bin, the outer surface of one side of the heat exchange coil is fixedly connected with the inner top surface of the preheating bin through a screw, and the outer surface of the other side of the heat exchange coil is fixedly connected with the bottom of the leaky plate through a screw.

[0010] Preferably, one end of the drainage pipe is fixedly penetrated into the inside of the preheating bin, one end of each of the two springs is fixedly connected with the inner wall of the two hollow conical sleeves, the other end of each of the two springs is fixedly connected with the outer surface of the sealing element, and the two sealing elements are arranged in the inside of the two hollow conical sleeves.

[0011] Preferably, the inside of the absorption refrigerating machine is provided with a generator and an evaporator, the inside bottom surface of the outer frame is fixedly installed with a circulating pump through an auxiliary frame, the input end of the circulating pump is fixedly communicated with a heat conduction pipe, the output end of the circulating pump is fixedly communicated with a conveying pipe, the output end of the generator is fixedly communicated with a return pipe, and the outer surface of the flue gas heat exchanger is provided with a temperature measuring instrument near the bottom.

[0012] Preferably, the outer surface of the return pipe is provided with a first electromagnetic valve, the top end of the flue gas heat exchanger is fixedly communicated with a connecting pipe for introducing a heat source, one side of the outer surface of the evaporator is coupled with a cold air output pipe, and the other side of the outer surface of the evaporator is coupled with a return air pipe.

[0013] Preferably, the bottom of the absorption refrigerating machine is fixedly connected with the inside bottom surface of the outer frame, the top end of the heat conduction pipe is fixedly penetrated into the inside of the flue gas heat exchanger, one end of the conveying pipe is fixedly penetrated into the inside of the generator, and one end of the return pipe is fixedly penetrated into the inside of the flue gas heat exchanger.

[0014] Preferably, the low-temperature heat exchange assembly comprises a water storage bin, the bottom of the water storage bin is fixedly connected with the inside bottom surface of the outer frame, one side of the inner wall of the water storage bin is coupled with a waste heat exchange pipe, and both ends of the waste heat exchange pipe are fixedly penetrated into the outside of the water storage bin.

[0015] Preferably, one end of the waste heat exchange pipe is fixedly connected with one end of a second three-way pipe, the other side of the inner wall of the water storage bin is coupled with a low-temperature heat exchange pipe, both ends of the low-temperature heat exchange pipe are fixedly penetrated into the outside of the water storage bin, and the inner wall of the water storage bin is provided with a temperature sensor.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. In order to ensure efficient use of ship exhaust gas, the medium-temperature exhaust gas pipeline in the ship is fixedly communicated with the first three-way pipe, the heat conducting oil is preheated, when the amount of high-temperature exhaust gas in the flue gas heat exchanger is insufficient to normally provide stable high-temperature heat source for the absorption refrigerating machine, the heat conducting oil can be preheated in the preheating bin and then quickly heated in the flue gas heat exchanger, so that the temperature of the heat conducting oil is quickly raised, the stable operation of the absorption refrigerating machine is ensured, and the ship exhaust gas is efficiently utilized, thereby solving the problem of resource waste caused by the large temperature fluctuation of the ship exhaust gas in the prior art, which easily affects the normal operation of the air conditioning system.

[0018] 2、In the marine double cold source heat energy saving control air conditioning unit, set up compression type refrigeration machine and absorption type refrigeration machine two refrigeration equipment, to ensure the stable operation of marine air conditioning unit, in order to realize the efficient use of high temperature exhaust gas in the ship, the exhaust pipe and connecting pipe between the high temperature section of the sealing connection, heat transfer oil in the flue gas heat exchanger is heated, and through the circulating pump, the heated heat transfer oil enters into the inside of the generator through the heat pipe and the conveying pipe, realizes the conversion of heat energy to refrigeration energy, and then returns to the inside of the flue gas heat exchanger through the backflow pipe, and the heat transfer oil is heated again, realizing the reasonable recycling of high temperature exhaust gas in the ship.

[0019] 3, the medium temperature exhaust gas enters into the preheating bin, and the water source in the water storage bin for daily water use in the ship is heated, and then the low temperature exhaust gas in the ship is fixedly connected with the low temperature heat exchange pipe, the water source in the water storage bin is heated efficiently, and the temperature of the water source in the water storage bin is monitored in real time through the temperature sensor, and the energy is further utilized through the action of the low temperature heat exchange assembly, and the resources are saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the marine double cold source heat energy saving control air conditioning unit of the application;

[0021] Figure 2 It is a side view of the marine double cold source heat energy saving control air conditioning unit of the application;

[0022] Figure 3 It is a high temperature heating assembly part of the marine double cold source heat energy saving control air conditioning unit of the application;

[0023] Figure 4 It is a flue gas heat exchanger part of the marine double cold source heat energy saving control air conditioning unit of the application;

[0024] Figure 5 It is a medium temperature preheating assembly part of the marine double cold source heat energy saving control air conditioning unit of the application;

[0025] Figure 6 It is a preheating bin part of the marine double cold source heat energy saving control air conditioning unit of the application;

[0026] Figure 7 It is a marine double cold source heat energy saving control air conditioning unit of the application Figure 6 Enlarged view of A;

[0027] Figure 8 It is a low temperature heat exchange assembly part of the marine double cold source heat energy saving control air conditioning unit of the application.

[0028] In the drawing:

[0029] 1, outer frame; 2, controller; 3, compression refrigeration machine; 4, high-temperature heating assembly; 401, absorption refrigeration machine; 402, generator; 403, evaporator; 404, flue gas heat exchanger; 405, heat conduction pipe; 406, circulating pump; 407, delivery pipe; 408, return pipe; 409, first electromagnetic valve; 410, connecting pipe; 411, temperature measuring instrument; 5, medium-temperature preheating assembly; 501, preheating bin; 502, first tee; 503, heat exchange coil; 504, limiting ring; 505, second tee; 506, extrusion plate; 507, leakage plate; 508, drainage pipe; 509, first intelligent control valve; 510, second intelligent control valve; 511, communication pipe; 512, hollow conical sleeve; 513, connecting rod; 514, spring; 515, sealing element; 6, low-temperature heat exchange assembly; 601, water storage bin; 602, waste heat exchange pipe; 603, low-temperature heat exchange pipe; 604, temperature sensor; 7, cold air output pipe; 8, return air pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the 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 skilled in the art without creative work fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-8 The present application provides a technical solution: a marine dual-cold-source heat energy saving and controlling air conditioning unit, the inside of the absorption refrigeration machine 401 is provided with a generator 402 and an evaporator 403, the inside bottom surface of the outer frame 1 is fixedly installed with a circulating pump 406 through an auxiliary frame, the input end of the circulating pump 406 is fixedly communicated with a heat conduction pipe 405, the output end of the circulating pump 406 is fixedly communicated with a delivery pipe 407, the output end of the generator 402 is fixedly communicated with a return pipe 408, the outer surface of the flue gas heat exchanger 404 is provided with a temperature measuring instrument 411 near the bottom, the outer surface of the return pipe 408 is provided with a first electromagnetic valve 409, the top end of the flue gas heat exchanger 404 is fixedly communicated with a connecting pipe 410 for introducing a heat source, the side outer surface of the evaporator 403 is coupled with a cold air output pipe 7, the other side outer surface of the evaporator 403 is coupled with a return air pipe 8, the bottom of the absorption refrigeration machine 401 is fixedly connected with the inside bottom surface of the outer frame 1, the top end of the heat conduction pipe 405 is fixedly penetrated into the inside of the flue gas heat exchanger 404, one end of the delivery pipe 407 is fixedly penetrated into the inside of the generator 402, one end of the return pipe 408 is fixedly penetrated into the inside of the flue gas heat exchanger 404.

[0032] In the marine dual cold source heat energy saving and controlling air conditioning unit in the embodiment, in order to ensure the normal operation of the air conditioning unit, two refrigeration devices of the compression refrigeration machine 3 and the absorption refrigeration machine 401 are arranged to ensure the stable operation of the marine air conditioning unit, wherein the compression refrigeration machine 3 consumes mechanical energy through the compressor to force the refrigerant to undergo the four processes of compression, condensation, throttling and evaporation in the closed system, so as to realize the purpose of absorbing heat from the low temperature environment and discharging heat to the high temperature environment. In order to realize the efficient utilization of high temperature exhaust gas in the ship, since the diesel engine in the main engine of the ship is mostly fueled by diesel, a large amount of high temperature flue gas will be generated when the fuel is violently burned in the cylinder of the main engine, and the exhaust gas temperature is about 300-400 DEG C. between the high-temperature section exhaust pipe and the connecting pipe 410, so that the high-temperature gas enters the inside of the flue gas heat exchanger 404, thereby heating the heat-conducting oil in the flue gas heat exchanger 404, wherein the flue gas heat exchanger 404 is used to exchange heat between the waste heat in the flue gas and air, realize energy recovery and flue gas temperature regulation, through the metal pipe bundle inside the heat exchanger, the heat of the high-temperature flue gas is transferred to the low-temperature heat-conducting oil by heat conduction and convection, so that the flue gas temperature is reduced, and the low-temperature heat-conducting oil temperature is increased, then the circulating pump 406 can be started to drive the heated heat-conducting oil to enter the inside of the generator 402 through the heat-conducting pipe 405 and the conveying pipe 407, and be uniformly distributed in the inside of the generator 402 through the heat exchange pipe bundle in the generator 402, covering enough heat exchange area, because the generator 402 contains the lithium bromide-water solution in the absorption refrigerator 401, wherein the water is the refrigerant and the lithium bromide is the absorbent, when the high-temperature heat-conducting oil flows through the heat exchange pipe bundle in the generator 402, the heat is transferred to the lithium bromide-water solution outside the pipe through the pipe wall heat conduction, the solution absorbs heat and the temperature rises to the boiling point, so that the low-boiling-point water solution evaporates into refrigerant vapor, separates from the solution, enters the condenser in the absorption refrigerator 401, and condenses into liquid refrigerant to continue to participate in the refrigeration cycle, and the remaining concentrated lithium bromide solution flows to the absorber in the absorption refrigerator 401 to absorb the refrigerant vapor returned from the evaporator 403, complete the cycle, and the evaporator 403 is a place where the refrigerant changes from liquid to gas, the low-pressure liquid water enters the evaporator 403 and evaporates rapidly in the low-pressure environment, and the evaporation process needs to absorb a large amount of heat, which comes from the cold water flowing through the coil, thereby reducing the temperature of the cold water and realizing the refrigeration effect, the refrigerated gas is discharged outward through the cold air output pipe 7, first refrigerating the space in the ship that needs to be refrigerated, at the same time, the high-temperature gas in the space that needs to be refrigerated is cooled through the return air pipe 8, in addition, the operation of the heat-conducting oil in the generator 402 is essentially a carrier of high-temperature heat source, which transfers heat by flowing, drives the refrigerant in the lithium bromide-water solution to evaporate, realizes the conversion of heat energy to refrigeration energy, and after the heat-conducting oil releases heat, the temperature of the heat-conducting oil is reduced, that is, the heat-conducting oil returns to the inside of the flue gas heat exchanger 404 through the return pipe 408, and the heat-conducting oil is heated again at high temperature, through the action of the high-temperature heating assembly 4, the high-temperature waste gas in the ship is reasonably recycled.

[0033] As Figure 1 - Figure 7The utility model discloses a marine double cold source heat energy energy saving pipe and control air conditioning unit, including the outer frame 1, the inside bottom surface of outer frame 1 is close to the front surface and is provided with controller 2, the inside of outer frame 1 is close to one side edge and is provided with the compression refrigerating machine 3 for providing stable refrigerating capacity, the inside of outer frame 1 is close to the front surface and is provided with low temperature heat exchange subassembly 6 for recycling and utilizing the low temperature preheating generated in the ship, the inside of outer frame 1 is close to the center and is provided with high temperature heating subassembly 4 for recycling and utilizing the high temperature waste heat in the ship, and high temperature heating subassembly 4 includes absorption refrigerating machine 401 and flue gas heat exchanger 404, the bottom of high temperature heating subassembly 4 is provided with medium temperature preheating subassembly 5, and medium temperature preheating subassembly 5 includes preheating bin 501 for preheating heat transfer oil, a plurality of hole plates 507 are fixedly installed between the opposite inner walls of preheating bin 501 close to the center, two extrusion plates 506 are slidably connected to the inner wall of preheating bin 501, and heat exchange coil 503 for preheating heat transfer oil is fixedly connected to the inner wall of preheating bin 501, and the medium temperature waste heat enters heat exchange coil 503 and preheats heat transfer oil in preheating bin 501, is then transported to the inside of flue gas heat exchanger 404 and is rapidly heated to the required temperature and is then transported to the inside of absorption refrigerating machine 401, and medium temperature preheating subassembly 5 further includes first three-way pipe 502, three limit rings 504 are fixedly installed between the opposite inner walls of preheating bin 501, one end of heat exchange coil 503 is fixedly connected with second three-way pipe 505, and drainage pipe 508 is fixedly connected to the outer surface of one side of preheating bin 501, first intelligent control valve 509 is arranged on the outer surface of drainage pipe 508 close to the bottom end, second intelligent control valve 510 is arranged on the outer surface of drainage pipe 508 close to both ends, two communication pipes 511 are fixedly connected to the outer surface of the other side of preheating bin 501, hollow conical sleeve 512 is fixedly installed on the inner wall of one end of two communication pipes 511, and connecting rod 513 is fixedly connected between the opposite inner walls of two hollow conical sleeves 512, spring 514 is arranged on the outer surface of connecting rod 513 close to the center, one end of two springs 514 is fixedly connected with the inner wall of two hollow conical sleeves 512, and the other end of two springs 514 is fixedly connected with the outer surface of sealing element 515, the bottom of preheating bin 501 is fixedly connected with the inside bottom surface of outer frame 1, both ends of heat exchange coil 503 are fixedly penetrated to the opposite outer portions of preheating bin 501, the inner top surface of preheating bin 501 is fixedly connected with the outer surface of one side of heat exchange coil 503 through screw, the bottom of hole plate 507 is fixedly connected with the outer surface of the other side of heat exchange coil 503 through screw, one end of drainage pipe 508 is fixedly penetrated to the inside of preheating bin 501, one end of two springs 514 is fixedly connected with the inner wall of two hollow conical sleeves 512 respectively, the other end of two springs 514 is fixedly connected with the outer surface of sealing element 515 respectively, and two sealing elements 515 are arranged in the inside of two hollow conical sleeves 512 respectively.

[0034] In this embodiment, when the amount of high-temperature exhaust gas in the ship is insufficient to ensure the normal operation of the absorption refrigerator 401, in order to ensure the efficient use of ship exhaust gas, the medium-temperature exhaust gas pipeline in the ship is fixedly communicated with the first three-way pipe 502, so that the medium-temperature exhaust gas enters the heat exchange coil 503 through the first three-way pipe 502, and the preheating of the solution in the preheating bin 501 is realized through heat exchange. The preheating bin 501 is made of heat preservation material, and stores standby heat conducting oil at the top of the upper extrusion plate 506 and the bottom of the lower extrusion plate 506, and stores inert gas argon between the outer surfaces of the two extrusion plates 506, so as to realize the overall preheating of the standby heat conducting oil. When the amount of high-temperature exhaust gas in the flue gas heat exchanger 404 is insufficient to provide a stable high-temperature heat source for the absorption refrigerator 401, the first electromagnetic valve 409 is closed, the first intelligent control valve 509 and the upper second intelligent control valve 510 are opened through the controller 2, so that the heat conducting oil flowing back through the return pipe 408 enters the inside of the preheating bin 501 through the drainage pipe 508, and the low-temperature heat conducting oil is preheated at the top of the upper extrusion plate 506. After the part of the heat conducting oil enters the preheating bin 501, it further extrudes the heat conducting oil stored at the bottom, and drives the two extrusion plates 506 to move downward. The extrusion plate 506 is made of metal material without heat insulation function, and the outer surface of the extrusion plate 506 is wrapped with a rubber ring with sealing characteristics. When the lower extrusion plate 506 moves downward by a certain distance, the heat conducting oil below the extrusion plate 506 is extruded, so as to provide a pushing force to the sealing element 515 in the direction away from the preheating bin 501, and the spring 514 connected with the sealing element 515 is extruded and shortened, so as to push the sealing element 515 to move in the direction of the larger inner diameter of the hollow conical sleeve 512 corresponding to the sealing element 515, so that a larger gap is formed between the sealing element 515 and the inner wall of the hollow conical sleeve 512, so that the heat conducting oil moves along the gap to the inside of the communication pipe 511 corresponding to the gap, enters the inside of the return pipe 408, and enters the inside of the flue gas heat exchanger 404 through the return pipe 408. Because the part of the heat conducting oil is preheated in the preheating bin 501, when it enters the inside of the flue gas heat exchanger 404, it can be rapidly heated to the required temperature in a short time, and the temperature is displayed through the temperature measuring instrument 411. At the same time, the speed of the circulating pump 406 is adjusted through the controller 2, so as to deliver the heat conducting oil after high-temperature heat exchange to the inside of the generator 402 again for heat exchange treatment. When the preheating of the heat conducting oil inside the preheating bin 501 is completed, the upper second intelligent control valve 510 is closed and the lower second intelligent control valve 510 is opened, so that the low-temperature heat conducting oil enters the lower part of the two extrusion plates 506, thereby extruding the heat conducting oil above the two extrusion plates 506, so that the sealing element 515 above is extruded,Thus, the heat conducting oil enters the inside of the return pipe 408 through the communication pipe 511 located above, and then enters the inside of the flue gas heat exchanger 404 to exchange heat. Through the cooperation between the medium-temperature preheating assembly 5 and the high-temperature heating assembly 4, the medium-temperature exhaust gas in the ship is reasonably utilized, and the temperature amplitude change of the heat source in the absorption refrigerator 401 does not appear to be large, which ensures the stable operation of the absorption refrigerator 401 and also makes the ship exhaust gas be efficiently utilized, solving the problem of resource waste in the prior art due to the large temperature fluctuation of the ship exhaust gas which easily affects the normal operation of the air conditioning system.

[0035] As shown in Figure 1 - Figure 2 and Figure 6 The low-temperature heat exchange assembly 6 includes a water storage bin 601, the bottom of the water storage bin 601 is fixedly connected with the inner bottom surface of the outer frame 1, one side inner wall of the water storage bin 601 is coupled with a residual heat exchange pipe 602, both ends of the residual heat exchange pipe 602 are fixedly penetrated to the outside of the water storage bin 601, one end of the residual heat exchange pipe 602 is fixedly connected with one end of the second three-way pipe 505, the other side inner wall of the water storage bin 601 is coupled with a low-temperature heat exchange pipe 603, both ends of the low-temperature heat exchange pipe 603 are fixedly penetrated to the outside of the water storage bin 601, and the inner wall of the water storage bin 601 is provided with a temperature sensor 604.

[0036] In this embodiment, after the medium-temperature exhaust gas enters the inside of the preheating bin 501, it enters the water storage bin 601 through the second three-way pipe 505 to heat the water source in the water storage bin 601 used for daily water use in the ship. At the same time, in order to further ensure the temperature of the water source in the water storage bin 601, the low-temperature exhaust gas in the ship is fixedly communicated with the low-temperature heat exchange pipe 603 to realize efficient heating of the water source in the water storage bin 601, and the temperature of the water source in the water storage bin 601 is monitored in real time by the temperature sensor 604. Through the action of the low-temperature heat exchange assembly 6, the low-temperature exhaust gas in the ship is reasonably utilized, and thus the high-temperature, medium-temperature and low-temperature exhaust gases in the ship are all reasonably utilized, further realizing efficient utilization of energy and saving resources.

[0037] The use method and working principle of the device are as follows: in the ship double-cold-source heat energy saving and management air conditioning unit, two refrigeration devices, i.e., a compression type refrigerator 3 and an absorption refrigerator 401, are arranged to ensure the stable operation of the ship air conditioning unit. Since the diesel engine in the ship main engine uses diesel as fuel, a large amount of high-temperature flue gas is generated when the fuel is violently combusted in the main engine cylinder, and the exhaust temperature is about 300-400°C. between the high-temperature section exhaust pipe and the connecting pipe 410, so that the high-temperature gas enters the inside of the flue gas heat exchanger 404, thereby heating the heat-conducting oil in the flue gas heat exchanger 404, and then the circulating pump 406 can be started to drive the heated heat-conducting oil to enter the inside of the generator 402 through the heat-conducting pipe 405 and the conveying pipe 407, and be uniformly distributed in the inside of the generator 402 through the heat exchange pipe bundle in the generator 402, covering sufficient heat exchange area. Since the generator 402 contains the lithium bromide-water solution in the absorption refrigerating machine 401, in which water is the refrigerant and lithium bromide is the absorbent, when the high-temperature heat-conducting oil flows through the heat exchange pipe bundle in the generator 402, heat is transferred to the lithium bromide-water solution outside the pipe through heat conduction of the pipe wall, the temperature of the solution rises after absorbing heat, reaches the boiling point, and the low-boiling-point water solution evaporates into refrigerant vapor, which is separated from the solution and enters the condenser in the absorption refrigerating machine 401 to condense into liquid refrigerant, continues to participate in the refrigeration cycle, and the remaining concentrated lithium bromide solution flows to the absorber in the absorption refrigerating machine 401 to absorb the refrigerant vapor returned from the evaporator 403, completing the cycle. The evaporator 403 is a place where the refrigerant changes from liquid to gas, and the low-pressure liquid water rapidly evaporates in a low-pressure environment. The evaporation process needs to absorb a large amount of heat, which comes from the cold water flowing through the coil, thereby reducing the temperature of the cold water. The refrigerated gas is discharged outward through the cold air output pipe 7, first refrigerating the space in the ship that needs to be refrigerated, and at the same time, the high-temperature gas in the space that needs to be refrigerated is cooled through the return air pipe 8. In addition, the operation of the heat-conducting oil in the generator 402 is essentially a carrier of high-temperature heat source, which transfers heat through flow to drive the refrigerant in the lithium bromide-water solution to evaporate, realizing the conversion of heat energy to refrigeration energy. After releasing heat, the temperature of the heat-conducting oil decreases, and it returns to the inside of the flue gas heat exchanger 404 through the return pipe 408 to be heated again. Then the medium-temperature exhaust gas pipe in the ship is fixedly connected with the first three-way pipe 502, so that the medium-temperature exhaust gas enters the heat exchange coil 503 through the first three-way pipe 502, and preheats the solution in the preheating bin 501 through heat exchange, and the storage is standby heat-conducting oil, and the heat-conducting oil is stored at the top of the extrusion plate 506 located at the upper part and at the bottom of the extrusion plate 506 located at the lower part, and the high-pressure inert gas argon is stored between the outer surfaces of the two extrusion plates 506. When the amount of high-temperature exhaust gas in the flue gas heat exchanger 404 is insufficient to provide stable high-temperature heat source for the absorption refrigerating machine 401, the controller 2 closes the first electromagnetic valve 409, and simultaneously opens the first intelligent control valve 509 and the second intelligent control valve 510 located at the upper part, so that the heat-conducting oil returned through the return pipe 408 enters the inside of the preheating bin 501 through the drainage pipe 508, and preheats the low-temperature heat-conducting oil at the top of the extrusion plate 506 located at the upper part.The part of the heat conducting oil enters the preheating bin 501 and then extrudes the heat conducting oil stored at the bottom, driving the two extrusion plates 506 to move downward. The extrusion plates 506 are made of metal materials without heat insulation function, and the outer surface of the extrusion plates 506 is wrapped with a layer of rubber ring with sealing characteristics. When the lower extrusion plate 506 moves a certain distance downward, the heat conducting oil below the extrusion plate 506 is extruded, thereby providing a pushing force to the sealing element 515 in the preheating bin 501 outward, thereby extruding the spring 514 connected with the sealing element 515 to shorten, thereby pushing the sealing element 515 to move in the larger inner diameter direction of the hollow conical sleeve 512 corresponding thereto, so that a larger gap is generated between the sealing element 515 and the inner wall of the hollow conical sleeve 512, so that the heat conducting oil moves along the gap to the inside of the communicating pipe 511 corresponding thereto, enters the inside of the return pipe 408, and enters the inside of the flue gas heat exchanger 404 through the return pipe 408. Because the part of the heat conducting oil is preheated in the preheating bin 501, when it enters the inside of the flue gas heat exchanger 404, it can be rapidly heated to the required temperature in a short time and displayed through the temperature measuring instrument 411. At the same time, the controller 2 adjusts the rotating speed of the circulating pump 406 to deliver the high-temperature heat exchanged heat conducting oil to the inside of the generator 402 again for heat exchange treatment. When the heat conducting oil above the preheating bin 501 is preheated, the second intelligent control valve 510 above is closed, and the second intelligent control valve 510 below is opened, so that the low-temperature heat conducting oil enters below the two extrusion plates 506, thereby extruding the heat conducting oil above the two extrusion plates 506, so that the sealing element 515 above is extruded, thereby making the heat conducting oil enter the inside of the return pipe 408 through the communicating pipe 511 above, and then enter the inside of the flue gas heat exchanger 404 for heat exchange. Through the cooperation between the medium-temperature preheating assembly 5 and the high-temperature heating assembly 4, the temperature amplitude change of the heat source in the absorption refrigerating machine 401 will not be large. The medium-temperature waste gas enters the inside of the preheating bin 501, then enters the water storage bin 601 through the second three-way pipe 505, heats the water source in the water storage bin 601 used for daily water use in the ship, and fixes the communication between the low-temperature waste gas in the ship and the low-temperature heat exchange pipe 603. The water source in the water storage bin 601 is efficiently heated, and the temperature of the water source in the water storage bin 601 is monitored in real time through the temperature sensor 604.

[0038] The wiring diagram of the controller 2, the compression refrigerating machine 3, the absorption refrigerating machine 401, the generator 402, the evaporator 403, the circulating pump 406, the first electromagnetic valve 409, the first intelligent control valve 509, the second intelligent control valve 510 and the temperature sensor 604 in the present application belongs to the common knowledge in the art, and the working principle is the known technology, and the model is selected according to the actual use, so the control mode and the wiring arrangement of the controller 2, the compression refrigerating machine 3, the absorption refrigerating machine 401, the generator 402, the evaporator 403, the circulating pump 406, the first electromagnetic valve 409, the first intelligent control valve 509, the second intelligent control valve 510 and the temperature sensor 604 are not explained in detail.

[0039] Although the present 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 equivalent ones by those skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A marine dual-source heat energy-saving air conditioning unit, comprising an outer frame (1), wherein a controller (2) is disposed on the inner bottom surface of the outer frame (1) near the front surface, a compressor chiller (3) for providing stable cooling capacity is disposed on the inner side edge of the outer frame (1), and a low-temperature heat exchange component (6) for recovering and utilizing the low-temperature preheating generated in the ship is disposed on the inner side of the outer frame (1), characterized in that: The inner part of the outer frame (1) is provided with a high-temperature heating assembly (4) for recycling high-temperature waste heat in the ship, the high-temperature heating assembly (4) comprises an absorption refrigerator (401) and a flue gas heat exchanger (404), the bottom of the high-temperature heating assembly (4) is provided with a medium-temperature preheating assembly (5), the medium-temperature preheating assembly (5) comprises a preheating bin (501) for preheating heat-conducting oil, a perforated plate (507) is fixedly installed between the opposite inner walls of the preheating bin (501) near the center, two extrusion plates (506) are slidably connected to the inner wall of the preheating bin (501), and a heat exchange coil (503) for preheating heat-conducting oil is fixedly connected to the inner wall of the preheating bin (501); The medium-temperature waste heat in the heat exchange coil (503) preheats the heat-conducting oil in the preheating bin (501), and then is rapidly heated to the required temperature in the flue gas heat exchanger (404) and then is transported into the absorption refrigerator (401); The medium-temperature preheating assembly (5) further comprises a first three-way pipe (502), three limiting rings (504) are fixedly installed between the opposite inner walls of the preheating bin (501), one end of the heat exchange coil (503) is fixedly communicated with a second three-way pipe (505), and the outer surface of one side of the preheating bin (501) is fixedly communicated with a flow guide pipe (508); a first intelligent control valve (509) is arranged on the outer surface of the flow guide pipe (508) near the bottom end; Second intelligent control valves (510) are arranged on the outer surface of the flow guide pipe (508) near both ends, the outer surface of the other side of the preheating bin (501) is fixedly communicated with two communication pipes (511), a hollow conical sleeve (512) is fixedly installed on the inner wall of one end of each of the two communication pipes (511), a connecting rod (513) is fixedly connected between the opposite inner walls of the two hollow conical sleeves (512), springs (514) are arranged on the outer surface of both ends of the connecting rod (513) near the center, and one end of each of the two springs (514) is fixedly connected with a sealing element (515).

2. The marine dual cold source heat energy economized air handling unit as claimed in claim 1, wherein: The bottom of the preheating bin (501) is fixedly connected with the inner bottom surface of the outer frame (1), both ends of the heat exchange coil (503) are fixedly penetrated to the opposite outer parts of the preheating bin (501), the outer surface of one side of the heat exchange coil (503) is fixedly connected with the inner top surface of the preheating bin (501) through screws, and the outer surface of the other side of the heat exchange coil (503) is fixedly connected with the bottom of the perforated plate (507) through screws.

3. The marine dual cold source heat energy economized air handling unit of claim 2, wherein: One end of the flow guide pipe (508) is fixedly penetrated to the inner part of the preheating bin (501), one end of each of the two springs (514) is fixedly connected with the inner wall of each of the two hollow conical sleeves (512), the other end of each of the two springs (514) is fixedly connected with the outer surface of each of the two sealing elements (515), and the two sealing elements (515) are arranged in the inner parts of the two hollow conical sleeves (512).

4. The marine dual cold source heat energy economized air handling unit of claim 3, wherein: The inside of the absorption refrigeration machine (401) is provided with a generator (402) and an evaporator (403), the inside bottom surface of the outer frame (1) is fixedly installed with a circulating pump (406) through an auxiliary frame, the input end of the circulating pump (406) is fixedly communicated with a heat conduction pipe (405), the output end of the circulating pump (406) is fixedly communicated with a conveying pipe (407), the output end of the generator (402) is fixedly communicated with a return pipe (408), and the outer surface of the flue gas heat exchanger (404) is provided with a temperature measuring instrument (411) near the bottom.

5. The marine dual cold source heat energy economized air handling unit of claim 4, wherein: The outer surface of the return pipe (408) is provided with a first electromagnetic valve (409), the top end of the flue gas heat exchanger (404) is fixedly communicated with a connecting pipe (410) for introducing a heat source, one side of the outer surface of the evaporator (403) is coupled with a cold air output pipe (7), and the other side of the outer surface of the evaporator (403) is coupled with an air return pipe (8).

6. The marine dual cold source heat energy economized air handling unit of claim 5, wherein: The bottom of the absorption refrigeration machine (401) is fixedly connected with the inside bottom surface of the outer frame (1), the top end of the heat conduction pipe (405) is fixedly penetrated into the inside of the flue gas heat exchanger (404), one end of the conveying pipe (407) is fixedly penetrated into the inside of the generator (402), and one end of the return pipe (408) is fixedly penetrated into the inside of the flue gas heat exchanger (404).

7. The marine dual cold source thermal energy economized air handling unit of claim 6, wherein: The low-temperature heat exchange assembly (6) comprises a water storage bin (601), the bottom of the water storage bin (601) is fixedly connected with the inside bottom surface of the outer frame (1), one side of the inner wall of the water storage bin (601) is coupled with a waste heat exchange pipe (602), and both ends of the waste heat exchange pipe (602) are fixedly penetrated into the outside of the water storage bin (601).

8. The marine dual cold source heat energy economized air handling unit of claim 7, wherein: One end of the waste heat exchange pipe (602) is fixedly connected with one end of a second three-way pipe (505), the other side of the inner wall of the water storage bin (601) is coupled with a low-temperature heat exchange pipe (603), both ends of the low-temperature heat exchange pipe (603) are fixedly penetrated into the outside of the water storage bin (601), and the inner wall of the water storage bin (601) is provided with a temperature sensor (604).

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