WO2017063321A1 - Air source heat pump spray defrosting device based on super-hydrophobic finned tube heat exchanger - Google Patents

Air source heat pump spray defrosting device based on super-hydrophobic finned tube heat exchanger Download PDF

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WO2017063321A1
WO2017063321A1 PCT/CN2016/073263 CN2016073263W WO2017063321A1 WO 2017063321 A1 WO2017063321 A1 WO 2017063321A1 CN 2016073263 W CN2016073263 W CN 2016073263W WO 2017063321 A1 WO2017063321 A1 WO 2017063321A1
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heat exchanger
way valve
tube heat
valve
output
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PCT/CN2016/073263
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French (fr)
Chinese (zh)
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梁彩华
汪峰
杨明涛
张小松
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东南大学
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Priority to CN201510672101.8A priority Critical patent/CN105299987B/en
Priority to CN201510672101.8 priority
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Publication of WO2017063321A1 publication Critical patent/WO2017063321A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass

Abstract

An air source heat pump spray defrosting device based on a super-hydrophobic finned tube heat exchanger, comprising a refrigerant loop, a hot water loop, and an air loop. The refrigerant loop comprises a compressor (1), a four-way valve (2), a first heat exchanger (3), a first check valve (4-1), a second check valve (4-2), a third check valve (4-3), a fourth check valve (4-4), a first solenoid valve (5-1), a second solenoid valve (5-2), a liquid reservoir (6), a desiccant filter (7), an electronic expansion valve (8), a finned tube heat exchanger (9), a gas-liquid separator (10), and a heating-type water storage tank (12). The hot water loop comprises the heating-type water storage tank (12), a filter (13), a water pump (14), a nozzle (15), an electric heating tape (16), a water collection pan (17), a three-way valve (18), a temperature sensor (19), and a liquid level sensor (20), wherein a three-way valve first input end (18a), a three-way valve first output end (18b), and a three-way valve second output end (18c) are provided on the three-way valve (18). The air loop comprises the finned tube heat exchanger (9) and a fan (11). Said device spends less time and consume less heat for defrosting, so that continuous heat supply during the defrosting can be realized, and the heat supply time and the heat supply efficiency of the heat pump system are improved.

Description

基于超疏水翅片管换热器的空气源热泵喷淋除霜装置Air source heat pump spray defrosting device based on superhydrophobic finned tube heat exchanger 技术领域Technical field
本发明属于制冷空调系统设计和制造的技术领域,涉及一种基于超疏水型翅片管换热器的空气源热泵喷淋除霜方法及实现该方法的装置。The invention belongs to the technical field of design and manufacture of refrigeration air conditioning systems, and relates to an air source heat pump spray defrosting method based on a superhydrophobic finned tube heat exchanger and a device for realizing the same.
背景技术Background technique
空气源热泵兼顾制冷和制热,具有一次能源综合利用效率高、节能、环保以及初投资低等优点。空气源热泵的大力推广对提高我国能源综合利用效率,实现节能减排具有重要意义。空气源热泵冬季制热运行存在的最大问题是室外翅片管换热器表面结霜,随着换热器翅片间霜层的生长,翅片表面与空气间的换热热阻不断增大,空气流量减小,导致系统工作状况恶化,效率降低,甚至不能正常工作。因此空气源热泵在结霜工况下运行必须适时除霜。The air source heat pump takes into consideration both refrigeration and heating, and has the advantages of high efficiency of primary energy comprehensive utilization, energy saving, environmental protection, and low initial investment. The vigorous promotion of air source heat pumps is of great significance to improve China's energy comprehensive utilization efficiency and achieve energy conservation and emission reduction. The biggest problem in the heating operation of air source heat pump in winter is the frost on the surface of the outdoor finned tube heat exchanger. With the growth of the frost layer between the heat exchanger fins, the heat transfer resistance between the fin surface and the air increases. The air flow is reduced, resulting in deterioration of the system's working conditions, reduced efficiency, and even not working properly. Therefore, the air source heat pump must be defrost at the right time when operating under frost conditions.
目前,常用的除霜方法是逆循环除霜和热气旁通除霜。逆循环除霜过程中由于四通阀频繁换向,致使制冷系统压缩机出现“奔油”现象,降低压缩机的可靠性和使用寿命;除霜时制冷剂需从供热系统中吸取热量用于除霜,造成供热系统温度急剧波动,影响供热房间的热舒适性。热气旁通除霜的热量主要来自压缩机耗功,除霜速度较慢,且易造成除霜过程中压缩机吸气带液。现有除霜方法实施除霜时,热泵机组需中断制热进行除霜,使得机组供热不连续,且除霜过程中蒸发器表面霜层融化以及滞留水蒸发需消耗大量热量和时间,导致除霜效率难以提高。Currently, the commonly used defrosting methods are reverse cycle defrosting and hot gas bypass defrosting. During the reverse circulation defrost process, due to the frequent reversal of the four-way valve, the compressor of the refrigeration system appears “oil” phenomenon, which reduces the reliability and service life of the compressor; when the defrosting, the refrigerant needs to absorb heat from the heating system. In the defrosting, the temperature of the heating system fluctuates sharply, which affects the thermal comfort of the heating room. The heat of the hot gas bypass defrosting mainly comes from the power consumption of the compressor, the defrosting speed is slow, and it is easy to cause the compressor to take in the liquid during the defrosting process. When the existing defrosting method is used for defrosting, the heat pump unit needs to interrupt the heating to perform defrosting, so that the heating of the unit is discontinuous, and the frost layer on the surface of the evaporator is melted and the evaporation of the retained water consumes a large amount of heat and time, resulting in a large amount of heat and time. Defrost efficiency is difficult to increase.
本发明创作者在前期研究中发现超疏水表面的融霜水滞留量少,且超疏水表面粘附性弱,表面滞留水滴易通过风力吹除。基于超疏水型翅片管换热器的表面特性,发明出一种除霜时间短、除霜耗热量少、可实现除霜期间供热不间断的空气源热泵除霜方法,对提高热泵系统的供热时间和效率具有重要意义。In the previous study, the creator of the present invention found that the amount of defrosting water retained on the superhydrophobic surface is small, and the superhydrophobic surface has weak adhesion, and the surface retained water droplets are easily blown off by wind. Based on the surface characteristics of the super-hydrophobic fin-and-tube heat exchanger, an air source heat pump defrosting method with short defrost time, low defrosting heat consumption and uninterrupted heating during defrosting is invented, and the heat pump system is improved. The heating time and efficiency are of great significance.
发明内容Summary of the invention
技术问题:本发明的目的是为解决现有除霜方式给空气源热泵系统带来的诸多弊端,基于超疏水型翅片管换热器的表面特性,提出一种除霜耗热量少、可实现除霜期间供热不间断的空气源热泵喷淋除霜方法及装置。 Technical Problem: The object of the present invention is to solve the disadvantages of the existing defrosting mode for the air source heat pump system. Based on the surface characteristics of the superhydrophobic finned tube heat exchanger, a defrosting heat consumption is proposed. The air source heat pump spray defrosting method and device for realizing uninterrupted heating during defrosting.
技术方案:本发明的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,包括制冷剂回路、热水回路和空气回路。制冷剂回路包括压缩机、四通阀、第一换热器、第一单向阀、第二单向阀、第三单向阀、第四单向阀、第一电磁阀、第二电磁阀、储液器、干燥过滤器、电子膨胀阀、翅片管换热器、气液分离器和加热型蓄水箱,四通阀上设置有四通阀第一输入端、四通阀第一输出端、四通阀第二输入端和四通阀第二输出端,第一换热器上设置有第一换热器输入端和第一换热器输出端,翅片管换热器上设置有翅片管换热器输入端和翅片管换热器输出端,加热型蓄水箱上设置有加热型蓄水箱第一输入端、加热型蓄水箱第一输出端、加热型蓄水箱第二输出端和加热型蓄水箱第二输入端;加热型蓄水箱同时是热水回路的组成部分,翅片管换热器同时是空气回路的组成部分;Technical Solution: The air source heat pump spray defrosting device based on the superhydrophobic finned tube heat exchanger of the present invention comprises a refrigerant circuit, a hot water circuit and an air circuit. The refrigerant circuit includes a compressor, a four-way valve, a first heat exchanger, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a first electromagnetic valve, and a second electromagnetic valve , liquid storage device, drying filter, electronic expansion valve, finned tube heat exchanger, gas-liquid separator and heating type water storage tank, the four-way valve is provided with a four-way valve first input end and a four-way valve first The output end, the second input end of the four-way valve and the second output end of the four-way valve, the first heat exchanger is provided with a first heat exchanger input end and a first heat exchanger output end, and the fin-tube heat exchanger is arranged The fin-tube heat exchanger input end and the fin-tube heat exchanger output end are arranged, and the heating-type water storage tank is provided with a first input end of the heating type water storage tank, a first output end of the heating type water storage tank, and a heating type a second output end of the water storage tank and a second input end of the heating type water storage tank; the heating type water storage tank is also a component of the hot water circuit, and the fin tube heat exchanger is also an integral part of the air circuit;
制冷剂回路中,压缩机输出端与四通阀第一输入端连接,四通阀第一输出端与第一换热器输入端连接,第一换热器输出端分成两路,一路与第一单向阀的入口连接,另一路与第三单向阀的出口连接,第一单向阀的出口分成三路,一路与第二单向阀的出口连接,一路通过第一电磁阀与储液器输入端连接,另一路通过第二电磁阀与加热型蓄水箱第一输入端连接,加热型蓄水箱第一输出端也与储液器输入端连接,储液器输出端通过干燥过滤器、电子膨胀阀同时与第四单向阀的入口和第三单向阀的入口连接,第四单向阀的出口与翅片管换热器输入端连接,翅片管换热器输入端同时还与第二单向阀的入口连接,翅片管换热器输出端与四通阀第二输入端连接,四通阀第二输出端与气液分离器输入端连接,气液分离器输出端与压缩机输入端连接;In the refrigerant circuit, the output end of the compressor is connected to the first input end of the four-way valve, the first output end of the four-way valve is connected to the input end of the first heat exchanger, and the output end of the first heat exchanger is divided into two paths, one way and the other The inlet of one check valve is connected, the other is connected to the outlet of the third check valve, the outlet of the first check valve is divided into three paths, one is connected with the outlet of the second check valve, and the other is passed through the first solenoid valve and stored The liquid input end is connected, the other way is connected to the first input end of the heating type water storage tank through the second electromagnetic valve, the first output end of the heating type water storage tank is also connected with the liquid storage input end, and the liquid storage output end is dried. The filter and the electronic expansion valve are simultaneously connected with the inlet of the fourth check valve and the inlet of the third check valve, and the outlet of the fourth check valve is connected with the input end of the fin tube heat exchanger, and the fin tube heat exchanger input The end is also connected to the inlet of the second check valve, the output end of the finned tube heat exchanger is connected to the second input end of the four-way valve, and the second output end of the four-way valve is connected to the input end of the gas-liquid separator, gas-liquid separation The output of the device is connected to the input of the compressor;
热水回路包括加热型蓄水箱、过滤器、水泵、喷嘴、电加热带、集水盘、三通阀,三通阀上设置有三通阀第一输入端、三通阀第一输出端和三通阀第二输出端;热水回路中,加热型蓄水箱上设置有温度传感器和液位传感器,加热型蓄水箱第二输出端依次通过过滤器、水泵与喷嘴连接,喷嘴上设置有电加热带,喷嘴正对翅片管换热器进风口,集水盘位于翅片管换热器底部,集水盘底部的出水口与三通阀第一输入端连接,三通阀第一输出端与加热型蓄水箱第二输入端连接,三通阀第二输出端与排水管道连接,电加热带安装于喷嘴外表面;The hot water circuit comprises a heating type water storage tank, a filter, a water pump, a nozzle, an electric heating belt, a water collecting tray and a three-way valve. The three-way valve is provided with a three-way valve first input end and a three-way valve first output end and The second output end of the three-way valve; in the hot water circuit, the heating type water storage tank is provided with a temperature sensor and a liquid level sensor, and the second output end of the heating type water storage tank is sequentially connected through a filter, a water pump and a nozzle, and the nozzle is arranged There is an electric heating belt, the nozzle is opposite to the air inlet of the finned tube heat exchanger, the water collecting tray is located at the bottom of the finned tube heat exchanger, and the water outlet at the bottom of the water collecting tray is connected with the first input end of the three-way valve, the three-way valve An output end is connected to the second input end of the heating type water storage tank, the second output end of the three-way valve is connected to the drainage pipe, and the electric heating belt is mounted on the outer surface of the nozzle;
空气回路包括翅片管换热器和风机,风机设置在翅片管换热器出风口处。The air circuit includes a finned tube heat exchanger and a fan, and the fan is disposed at the air outlet of the fin tube heat exchanger.
进一步的,本发明装置在非结霜工况运行时:第一电磁阀打开,第二电磁阀关闭。在结霜工况运行时,第一电磁阀关闭,第二电磁阀打开,制冷剂流经加热型蓄水箱。Further, the device of the present invention operates in a non-frosting condition: the first solenoid valve is open and the second solenoid valve is closed. During the frosting operation, the first solenoid valve is closed, the second solenoid valve is opened, and the refrigerant flows through the heating type water storage tank.
进一步的,本发明装置中,热水回路中加热热水的热量来源于制冷剂过冷放出的 热量,无需额外增加热源。Further, in the device of the present invention, the heat of the hot water heated in the hot water circuit is derived from the supercooling of the refrigerant. Heat, no additional heat source is needed.
进一步的,本发明装置中,当翅片管换热器表面需除霜时,水泵启动,热水通过喷嘴喷淋于翅片管换热器表面的霜层,实现霜层融化。Further, in the device of the present invention, when the surface of the fin-tube heat exchanger needs to be defrosted, the water pump is started, and the hot water is sprayed through the nozzle on the frost layer on the surface of the fin-tube heat exchanger to melt the frost layer.
进一步的,本发明装置中,翅片管换热器为超疏水型翅片管换热器,利用超疏水型翅片管换热器表面对水滴的低粘附特性,使所喷热水及融霜水从翅片表面自行脱落。Further, in the device of the present invention, the fin-tube heat exchanger is a super-hydrophobic fin-and-tube heat exchanger, and the surface of the super-hydrophobic fin-tube heat exchanger has low adhesion characteristics to water droplets, so that the hot water is sprayed and The defrosting water falls off from the surface of the fin.
进一步的,本发明装置中,风机为可换向变速风机,对尚滞留翅片表面的少量水滴,通过风机换向和提高风速吹除。Further, in the device of the present invention, the fan is a reversible variable speed fan, and a small amount of water droplets on the surface of the fins remaining on the fins are blown by the fan and the wind speed is increased.
进一步的,本发明装置中,热水回路中,通过三通阀向加热型蓄水箱内进行补水。Further, in the apparatus of the present invention, in the hot water circuit, water is supplied to the heating type water storage tank through the three-way valve.
进一步的,本发明装置中,热水回路上各设备和各段管道均进行保温,防止气温较低时回路冻结。Further, in the device of the present invention, each device and each section of the hot water circuit are insulated to prevent the circuit from freezing when the temperature is low.
本发明空气源热泵在夏季制冷模式运行时,低温低压的制冷剂气体从气液分离器中被压缩机吸入、压缩后变成高温高压的过热蒸气排出,经过四通阀进入翅片管换热器,在翅片管换热器中,制冷剂放出热量冷凝成液体后,再经过第二单向阀和第一电磁阀进入储液器,制冷剂从储液器出来后,依次经过干燥过滤器、电子膨胀阀和第三单向阀后,进入第一换热器,制冷剂在第一换热器中吸收热量蒸发成过热蒸气,实现制冷,制冷剂从第一换热器出来后经过四通阀进入气液分离器,然后再次被吸入压缩机,完成制冷循环。空气回路中,空气在风机作用下流经翅片管换热器,空气在翅片管换热器中与制冷剂换热。此过程中,水泵关闭,热水回路不工作。When the air source heat pump of the present invention is operated in the summer cooling mode, the low-temperature low-pressure refrigerant gas is sucked from the gas-liquid separator by the compressor, and is converted into a high-temperature and high-pressure superheated vapor, and is discharged into the finned tube through the four-way valve. In the fin-and-tube heat exchanger, after the refrigerant releases heat and condenses into a liquid, the second check valve and the first electromagnetic valve enter the liquid storage device, and the refrigerant passes through the liquid storage device and then passes through the dry filter. After the device, the electronic expansion valve and the third one-way valve enter the first heat exchanger, the refrigerant absorbs heat in the first heat exchanger to evaporate into superheated steam to achieve refrigeration, and the refrigerant passes through the first heat exchanger. The four-way valve enters the gas-liquid separator and is again sucked into the compressor to complete the refrigeration cycle. In the air circuit, air flows through the finned tube heat exchanger under the action of the fan, and the air exchanges heat with the refrigerant in the finned tube heat exchanger. During this process, the pump is turned off and the hot water circuit is not working.
空气源热泵冬季制热模式非结霜工况运行时:第一电磁阀打开,第二电磁阀关闭。气液分离器中低温低压的制冷剂气体被压缩机吸入、压缩后排出,经过四通阀进入第一换热器,制冷剂在第一换热器中冷凝成液体后,经过第一单向阀、第一电磁阀进入储液器,制冷剂从储液器出来后经过干燥过滤器和电子膨胀阀被节流成气液两相,经过第四单向阀进入翅片管换热器,制冷剂在翅片管换热器中与空气换热后变成过热蒸气,制冷剂从翅片管换热器出来后经过四通阀进入气液分离器,然后再次被吸入压缩机,完成制热循环。空气回路中,空气在风机作用下流经翅片管换热器,空气在翅片管换热器中与制冷剂换热。此过程中,水泵关闭,热水回路不工作。Air source heat pump winter heating mode non-frosting operation: When the first solenoid valve is open and the second solenoid valve is closed. The low-temperature and low-pressure refrigerant gas in the gas-liquid separator is sucked by the compressor, compressed, and discharged. After entering the first heat exchanger through the four-way valve, the refrigerant is condensed into a liquid in the first heat exchanger, and then passes through the first one-way. The valve and the first electromagnetic valve enter the accumulator, and the refrigerant exits the accumulator and is throttled into a gas-liquid two-phase through a drying filter and an electronic expansion valve, and enters the fin-tube heat exchanger through the fourth one-way valve. The refrigerant becomes superheated vapor after heat exchange with the air in the fin-and-tube heat exchanger, and the refrigerant enters the gas-liquid separator after passing through the four-way valve from the fin-tube heat exchanger, and is then sucked into the compressor again, and the refrigerant is completed. Thermal cycling. In the air circuit, air flows through the finned tube heat exchanger under the action of the fan, and the air exchanges heat with the refrigerant in the finned tube heat exchanger. During this process, the pump is turned off and the hot water circuit is not working.
空气源热泵冬季制热模式结霜工况下运行时:第一电磁阀关闭,第二电磁阀打开。气液分离器中低温低压的制冷剂气体被压缩机吸入、压缩后排出,经过四通阀进入第一换热器,制冷剂在第一换热器中放出热量,冷凝成液体后经过第一单向阀、第二电磁阀进入加热型蓄水箱,制冷剂在加热型蓄水箱中加热热水,实现过冷,制冷剂从加 热型蓄水箱出来后进入储液器,制冷剂从储液器出来后经干燥过滤器、电子膨胀阀被节流成气液两相后,进入翅片管换热器,制冷剂在翅片管换热器中与空气换热,吸收热量后变成过热蒸气,制冷剂从翅片管换热器出来后经过四通阀进入气液分离器,然后再次被吸入压缩机,完成循环。空气回路中,空气在风机作用下流经翅片管换热器,空气在翅片管换热器中与制冷剂换热,空气中的部分水蒸汽将在翅片管换热器翅片表面结成霜,然后空气流出翅片管换热器。Air source heat pump in winter heating mode When operating under frost conditions: the first solenoid valve is closed and the second solenoid valve is open. The low-temperature and low-pressure refrigerant gas in the gas-liquid separator is sucked by the compressor, compressed and discharged, and enters the first heat exchanger through the four-way valve. The refrigerant releases heat in the first heat exchanger, and condenses into a liquid and then passes through the first The one-way valve and the second electromagnetic valve enter the heating type water storage tank, and the refrigerant heats the hot water in the heating type water storage tank to realize supercooling and refrigerant charging After the hot water storage tank comes out, it enters the liquid storage device. After the refrigerant comes out of the liquid storage device, the drying filter and the electronic expansion valve are throttled into two phases of gas and liquid, and then enter the finned tube heat exchanger, and the refrigerant is in the wing. The tube heat exchanger exchanges heat with the air, and absorbs heat to become superheated vapor. The refrigerant exits the finned tube heat exchanger and enters the gas-liquid separator through the four-way valve, and is then sucked into the compressor again to complete the cycle. In the air circuit, the air flows through the finned tube heat exchanger under the action of the fan, and the air exchanges heat with the refrigerant in the finned tube heat exchanger, and part of the water vapor in the air will be knotted on the surface of the finned tube heat exchanger fin. Frosting, then air flows out of the finned tube heat exchanger.
除霜时,水泵启动,加热型蓄水箱中的热水依次经过滤器、水泵、喷嘴,喷淋于翅片管换热器表面的霜层,热水与霜层进行换热,实现霜层融化。由于超疏水型翅片管换热器表面的低粘附特性,所喷热水及融霜水从翅片表面自行脱落。对于翅片表面尚滞留的少量水滴,通过风机换向和提高风速,将高速气流直接作用于具有超低粘附力的超疏水翅片表面的滞留水滴,实现水滴瞬态吹除。所喷热水及融霜水通过集水盘收集,当加热型蓄水箱中液位传感器显示水箱内水量不足,调节三通阀,通过集水盘向加热型蓄水箱内补水,否则多余融霜水将通过三通阀第二输出端排出。当环境温度低于0℃时,热水回路存在冻结风险,热水回路中的设备和管道均进行保温,喷淋除霜前,喷嘴上的电加热带短暂加热防止喷嘴冻结阻塞。除霜结束后,水泵关闭,系统恢复到除霜前制热运行模式。除霜过程中,制热循环和除霜过程同时工作,互不影响。When defrosting, the water pump starts, the hot water in the heating type water storage tank passes through the filter, the water pump and the nozzle in sequence, and sprays the frost layer on the surface of the fin tube heat exchanger, and the hot water and the frost layer exchange heat to realize the frost layer. melt. Due to the low adhesion characteristics of the superhydrophobic finned tube heat exchanger surface, the sprayed hot water and the defrosted water fall off from the surface of the fin. For a small amount of water droplets still remaining on the surface of the fin, the wind speed is reversed and the wind speed is increased, and the high-speed airflow is directly applied to the retained water droplets on the surface of the superhydrophobic fin with ultra-low adhesion, so that the water droplet transient blowing is realized. The sprayed hot water and the frosted water are collected through the water collecting tray. When the liquid level sensor in the heated water storage tank indicates that the water volume in the water tank is insufficient, the three-way valve is adjusted, and the water is supplied to the heated water storage tank through the water collecting tray, otherwise redundant The defrost water will be discharged through the second output of the three-way valve. When the ambient temperature is lower than 0 °C, there is a risk of freezing in the hot water circuit. The equipment and pipes in the hot water circuit are kept warm. Before the spray defrosting, the electric heating belt on the nozzle is temporarily heated to prevent the nozzle from freezing and blocking. After the defrost is finished, the pump is turned off and the system returns to the pre-defrosting heating mode. During the defrosting process, the heating cycle and the defrosting process work simultaneously without affecting each other.
有益效果:本发明与现有技术相比,具有以下优点:Advantageous Effects: Compared with the prior art, the present invention has the following advantages:
第一,采用喷淋除霜,除霜时间短,除霜耗热量小,且除霜热量来源于制冷剂过冷放出的热量,同时超疏水翅片表面融霜滞留水量少,避免了蒸发滞留融霜水造成的能耗,实现了除霜过程的节能高效。First, spray defrosting, the defrosting time is short, the defrosting heat consumption is small, and the defrosting heat is derived from the heat released by the refrigerant under the cold, while the superhydrophobic fin surface defrosting retains less water, avoiding evaporation retention The energy consumption caused by the defrosting water realizes the energy saving and high efficiency of the defrosting process.
第二,除霜过程中,制热循环正常运行,可实现除霜期间供热不间断,不影响空调系统的热舒适性,同时提高了热泵的供热时间。Second, during the defrosting process, the heating cycle is normally operated, which can provide uninterrupted heating during defrosting, does not affect the thermal comfort of the air conditioning system, and improves the heating time of the heat pump.
第三,从除霜开始到结束,四通阀无需换向,系统的压力平衡、温度平衡没有被破坏,避免了由此带来的大量能量损失,提高了热泵系统的可靠性和供热效率。Thirdly, from the beginning to the end of the defrost, the four-way valve does not need to be reversed, the pressure balance and temperature balance of the system are not destroyed, the large amount of energy loss is avoided, and the reliability and heating efficiency of the heat pump system are improved. .
附图说明DRAWINGS
图1是基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置的示意图。1 is a schematic view of an air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger.
图中有:压缩机1、四通阀2、四通阀第一输入端2a、四通阀第一输出端2b、四通阀第二输入端2c、四通阀第二输出端2d、第一换热器3、第一换热器输入端3a、第一换热器输出端3b、第一单向阀4-1、第二单向阀4-2、第三单向阀4-3、第四单向阀 4-4、第一电磁阀5-1、第二电磁阀5-2、储液器6、干燥过滤器7、电子膨胀阀8、翅片管换热器9、翅片管换热器输入端9a、翅片管换热器输出端9b、气液分离器10、风机11、加热型蓄水箱12、加热型蓄水箱第一输入端12a、加热型蓄水箱第一输出端12b、加热型蓄水箱第二输出端12c、加热型蓄水箱第二输入端12d、过滤器13、水泵14、喷嘴15、电加热带16、集水盘17、三通阀18、三通阀第一输入端18a、三通阀第一输出端18b、三通阀第二输出端18c、温度传感器19和液位传感器20。The figure includes: compressor 1, four-way valve 2, four-way valve first input end 2a, four-way valve first output end 2b, four-way valve second input end 2c, four-way valve second output end 2d, a heat exchanger 3, a first heat exchanger input end 3a, a first heat exchanger output end 3b, a first check valve 4-1, a second check valve 4-2, and a third check valve 4-3 Fourth check valve 4-4, first solenoid valve 5-1, second solenoid valve 5-2, accumulator 6, drying filter 7, electronic expansion valve 8, finned tube heat exchanger 9, finned tube heat exchanger input End 9a, finned tube heat exchanger output end 9b, gas-liquid separator 10, fan 11, heating type water storage tank 12, heating type water storage tank first input end 12a, heating type water storage tank first output end 12b The second type of output port 12c of the heating type water storage tank, the second input end 12d of the heating type water storage tank, the filter 13, the water pump 14, the nozzle 15, the electric heating belt 16, the water collecting tray 17, the three-way valve 18, the three-way The valve first input end 18a, the three-way valve first output end 18b, the three-way valve second output end 18c, the temperature sensor 19 and the level sensor 20.
具体实施方式detailed description
下面结合附图1进一步说明本发明的具体实施方式:Specific embodiments of the present invention are further described below in conjunction with FIG. 1 :
一种基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,包括制冷剂回路、热水回路和空气回路。An air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger, comprising a refrigerant circuit, a hot water circuit and an air circuit.
制冷剂回路中,压缩机1的输出端与四通阀第一输入端2a连接,四通阀第一输出端2b与第一换热器输入端3a连接,第一换热器输出端3b分成两路,一路与第一单向阀4-1的入口连接,另一路与第三单向阀4-3的出口连接,第一单向阀4-1的出口分成三路,一路与第二单向阀4-2的出口连接,一路通过第一电磁阀5-1与储液器6的输入端连接,另一路通过第二电磁阀5-2与加热型蓄水箱第一输入端12a连接,加热型蓄水箱第一输出端12b也与储液器6的输入端连接,储液器6的输出端通过干燥过滤器7、电子膨胀阀8同时与第四单向阀4-4的入口和第三单向阀4-3的入口连接,第四单向阀4-4的出口与翅片管换热器输入端9a连接,翅片管换热器输入端9a同时还与第二单向阀4-2的入口连接,翅片管换热器输出端9b与四通阀第二输入端2c连接,四通阀第二输出端2d与气液分离器10的输入端连接,气液分离器10的输出端与压缩机1的输入端连接。In the refrigerant circuit, the output end of the compressor 1 is connected to the first input end 2a of the four-way valve, the first output end 2b of the four-way valve is connected to the first heat exchanger input end 3a, and the first heat exchanger output end 3b is divided. Two ways, one way is connected to the inlet of the first one-way valve 4-1, the other way is connected to the outlet of the third one-way valve 4-3, and the outlet of the first one-way valve 4-1 is divided into three paths, one way and two The outlet of the one-way valve 4-2 is connected, one way is connected to the input end of the accumulator 6 through the first electromagnetic valve 5-1, and the other is passed through the second electromagnetic valve 5-2 and the first input end 12a of the heating type water storage tank The first output end 12b of the heating type water storage tank is also connected to the input end of the accumulator 6, and the output end of the accumulator 6 passes through the drying filter 7, the electronic expansion valve 8 and the fourth one-way valve 4-4 at the same time. The inlet is connected to the inlet of the third one-way valve 4-3, the outlet of the fourth one-way valve 4-4 is connected to the fin-tube heat exchanger input end 9a, and the fin-tube heat exchanger input end 9a is also The inlet of the two-way valve 4-2 is connected, the output end of the fin-tube heat exchanger 9b is connected to the second input end 2c of the four-way valve, and the second output end 2d of the four-way valve is connected to the input end of the gas-liquid separator 10. Output of the accumulator 10 is connected to the input terminal 1 of the compressor.
热水回路中,加热型蓄水箱12上设置有温度传感器19和液位传感器20,加热型蓄水箱第二输出端12c依次通过过滤器13、水泵14与喷嘴15连接,喷嘴15上设置有电加热带16,喷嘴15正对翅片管换热器9的进风口,集水盘17位于翅片管换热器9底部,集水盘17底部的出水口与三通阀第一输入端18a连接,三通阀第一输出端18b与加热型蓄水箱第二输入端12d连接,三通阀第二输出端18c与排水管道连接。In the hot water circuit, the heating type water storage tank 12 is provided with a temperature sensor 19 and a liquid level sensor 20, and the second type of output port 12c of the heating type water storage tank is connected to the nozzle 15 through the filter 13 and the water pump 14, and is disposed on the nozzle 15. There is an electric heating belt 16, the nozzle 15 is facing the air inlet of the fin-tube heat exchanger 9, the water collecting tray 17 is located at the bottom of the fin-tube heat exchanger 9, the water outlet of the bottom of the water collecting tray 17 and the first input of the three-way valve The end 18a is connected, the first output end 18b of the three-way valve is connected to the second input end 12d of the heating type storage tank, and the second output end 18c of the three-way valve is connected to the drain pipe.
空气回路包括翅片管换热器9和风机11,风机11设置在翅片管换热器9出风口处。The air circuit includes a finned tube heat exchanger 9 and a fan 11, and the fan 11 is disposed at the air outlet of the fin tube heat exchanger 9.
空气源热泵夏季制冷模式运行时:第一电磁阀5-1打开,第二电磁阀5-2关闭。低温低压的制冷剂气体从气液分离器10中被压缩机1吸入、压缩后变成高温高压的过热 蒸气排出,经过四通阀2进入翅片管换热器9,在翅片管换热器9中,制冷剂放出热量冷凝成液体后,再经过第二单向阀4-2和第一电磁阀5-1进入储液器6,制冷剂从储液器6出来后,依次经过干燥过滤器7、电子膨胀阀8、第三单向阀4-3后,进入第一换热器3,制冷剂在第一换热器3中吸收热量蒸发成过热蒸汽,实现制冷,制冷剂从第一换热器3出来后经过四通阀2进入气液分离器10,然后再次被吸入压缩机1,完成制冷循环。空气回路中,空气在风机11作用下流经翅片管换热器9,制冷剂在翅片管换热器9中与空气换热。在此过程中,水泵14关闭,热水回路不工作。When the air source heat pump is operating in the summer cooling mode: the first solenoid valve 5-1 is opened and the second solenoid valve 5-2 is closed. The low-temperature low-pressure refrigerant gas is sucked into and compressed by the compressor 1 from the gas-liquid separator 10 to become a high-temperature high-pressure superheat. The vapor is discharged through the four-way valve 2 into the fin-and-tube heat exchanger 9, and in the fin-and-tube heat exchanger 9, the refrigerant releases heat to be condensed into a liquid, and then passes through the second check valve 4-2 and the first electromagnetic The valve 5-1 enters the accumulator 6, and after the refrigerant exits the accumulator 6, it passes through the drying filter 7, the electronic expansion valve 8, and the third check valve 4-3, and then enters the first heat exchanger 3. The refrigerant absorbs heat in the first heat exchanger 3 to evaporate into superheated steam to achieve refrigeration. The refrigerant exits the first heat exchanger 3, passes through the four-way valve 2, enters the gas-liquid separator 10, and is again sucked into the compressor 1 , complete the refrigeration cycle. In the air circuit, air flows through the fin tube heat exchanger 9 under the action of the fan 11, and the refrigerant exchanges heat with the air in the fin tube heat exchanger 9. During this process, the water pump 14 is turned off and the hot water circuit is not working.
空气源热泵冬季制热模式非结霜工况运行时:第一电磁阀5-1打开,第二电磁阀5-2关闭。气液分离器10中低温低压的制冷剂气体被压缩机1吸入、压缩后排出,经过四通阀2进入第一换热器3,制冷剂在第一换热器3中冷凝成液体后,经过第一单向阀4-1、第一电磁阀5-1进入储液器6,制冷剂从储液器6出来后经过干燥过滤器7和电子膨胀阀8被节流成气液两相,经过第四单向阀4-4进入翅片管换热器9,制冷剂在翅片管换热器9中与空气换热后变成过热蒸气,制冷剂从翅片管换热器9出来后经过四通阀2进入气液分离器10,然后再次被吸入压缩机1,完成制热循环。空气回路中,空气在风机11作用下流经翅片管换热器9,制冷剂在翅片管换热器9中与空气换热。在此过程中,水泵14关闭,热水回路不工作。Air source heat pump winter heating mode non-frosting operation: First solenoid valve 5-1 is open and second solenoid valve 5-2 is closed. The low-temperature low-pressure refrigerant gas in the gas-liquid separator 10 is sucked by the compressor 1, compressed, and discharged, and enters the first heat exchanger 3 through the four-way valve 2, and the refrigerant is condensed into a liquid in the first heat exchanger 3, After the first check valve 4-1 and the first solenoid valve 5-1 enter the accumulator 6, the refrigerant exits the accumulator 6 and is throttled into a gas-liquid two-phase through the desiccant filter 7 and the electronic expansion valve 8. After entering the finned tube heat exchanger 9 through the fourth check valve 4-4, the refrigerant becomes superheated vapor after being exchanged with the air in the finned tube heat exchanger 9, and the refrigerant is from the finned tube heat exchanger 9 After exiting, it enters the gas-liquid separator 10 through the four-way valve 2, and is again sucked into the compressor 1 to complete the heating cycle. In the air circuit, air flows through the fin tube heat exchanger 9 under the action of the fan 11, and the refrigerant exchanges heat with the air in the fin tube heat exchanger 9. During this process, the water pump 14 is turned off and the hot water circuit is not working.
空气源热泵冬季制热模式结霜工况下运行时:第一电磁阀5-1关闭,第二电磁阀5-2打开。制冷剂在第一换热器3中放出热量,冷凝成液体后经过第二电磁阀5-2进入加热型蓄水箱12,制冷剂在加热型蓄水箱12中加热热水,实现过冷,制冷剂从加热型蓄水箱12出来后进入储液器6,制冷剂从储液器6出来后经干燥过滤器7、电子膨胀阀8被节流成气液两相后,进入翅片管换热器9,制冷剂在翅片管换热器9中与空气换热,吸收热量后变成过热蒸气,制冷剂从翅片管换热器9出来后经过四通阀2进入气液分离器10,然后再次被吸入压缩机1,完成循环。空气回路中,空气在风机11作用下流经翅片管换热器9,制冷剂在翅片管换热器9中与空气换热,空气中的部分水蒸汽将在翅片管换热器9翅片表面结成霜,然后空气流出翅片管换热器9。When the air source heat pump is operating in the winter heating mode under frosting conditions: the first solenoid valve 5-1 is closed and the second solenoid valve 5-2 is opened. The refrigerant releases heat in the first heat exchanger 3, condenses into a liquid, and then enters the heating type water storage tank 12 through the second electromagnetic valve 5-2, and the refrigerant heats the hot water in the heating type water storage tank 12 to achieve supercooling. The refrigerant enters the accumulator 6 from the heated storage tank 12, and the refrigerant exits the accumulator 6 and is throttled into a gas-liquid two-phase through the drying filter 7 and the electronic expansion valve 8, and then enters the fin. The tube heat exchanger 9, the refrigerant exchanges heat with the air in the fin-and-tube heat exchanger 9, and absorbs heat to become superheated vapor. The refrigerant exits the fin-and-tube heat exchanger 9 and enters the gas-liquid through the four-way valve 2. The separator 10 is then sucked into the compressor 1 again to complete the cycle. In the air circuit, air flows through the finned tube heat exchanger 9 under the action of the fan 11, and the refrigerant exchanges heat with the air in the finned tube heat exchanger 9, and part of the water vapor in the air will be in the finned tube heat exchanger 9 The surface of the fins is frosted and then the air flows out of the finned tube heat exchanger 9.
除霜时,水泵14启动,加热型蓄水箱12中的热水依次经过滤器13、水泵14、喷嘴15,喷淋于翅片管换热器9表面的霜层,实现霜层融化。由于超疏水型翅片管换热器9表面对水滴的低粘附特性,融霜水从翅片表面自行脱落。对于尚滞留的少量水滴,通过风机11换向和提高风速,将高速气流直接作用于低粘附超疏水翅片表面的滞留水滴,实现水滴瞬态吹除。融霜水通过集水盘17收集,当加热型蓄水箱12中液位传感 器20显示水箱内水量不足,调节三通阀18,通过集水盘17向加热型蓄水箱12内补水,否则多余融霜水将通过三通阀第二输出端19c排出。当环境温度低于0℃时,热水回路存在冻结风险,热水回路中的设备和管道均进行保温,喷淋除霜前,喷嘴15上的电加热带16短暂加热防止喷嘴15冻结阻塞。除霜结束后,水泵14关闭,系统恢复到除霜前制热运行模式。除霜过程中,制热循环和除霜过程同时工作,互不影响。 At the time of defrosting, the water pump 14 is started, and the hot water in the heating type water storage tank 12 is sequentially sprayed through the filter 13, the water pump 14, and the nozzle 15, and sprayed on the frost layer on the surface of the fin-tube heat exchanger 9, thereby melting the frost layer. Due to the low adhesion property of the surface of the superhydrophobic finned tube heat exchanger 9 to water droplets, the defrost water falls off from the surface of the fin. For a small amount of water droplets that are still retained, the wind turbine 11 is used to reverse the direction and increase the wind speed, and the high-speed airflow directly acts on the retained water droplets on the surface of the low-adhesion superhydrophobic fin to realize the transient blowing of the water droplets. The defrosting water is collected through the water collecting tray 17, and the liquid level sensing in the heating type storage tank 12 The device 20 indicates that the amount of water in the water tank is insufficient, and the three-way valve 18 is adjusted to replenish water into the heating type water storage tank 12 through the water collecting tray 17, otherwise the excess defrosting water will be discharged through the second output end 19c of the three-way valve. When the ambient temperature is lower than 0 °C, there is a risk of freezing in the hot water circuit, and the equipment and pipes in the hot water circuit are kept warm. Before the spray defrosting, the electric heating belt 16 on the nozzle 15 is temporarily heated to prevent the nozzle 15 from freezing and blocking. After the defrosting is completed, the water pump 14 is turned off and the system returns to the pre-defrosting heating mode. During the defrosting process, the heating cycle and the defrosting process work simultaneously without affecting each other.

Claims (8)

  1. 一种基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,该装置包括制冷剂回路、热水回路和空气回路:An air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger, characterized in that the device comprises a refrigerant circuit, a hot water circuit and an air circuit:
    所述制冷剂回路包括压缩机(1)、四通阀(2)、第一换热器(3)、第一单向阀(4-1)、第二单向阀(4-2)、第三单向阀(4-3)、第四单向阀(4-4)、第一电磁阀(5-1)、第二电磁阀(5-2)、储液器(6)、干燥过滤器(7)、电子膨胀阀(8)、翅片管换热器(9)、气液分离器(10)和加热型蓄水箱(12),所述四通阀(2)上设置有四通阀第一输入端(2a)、四通阀第一输出端(2b)、四通阀第二输入端(2c)和四通阀第二输出端(2d),所述第一换热器(3)上设置有第一换热器输入端(3a)和第一换热器输出端(3b),所述翅片管换热器(9)上设置有翅片管换热器输入端(9a)和翅片管换热器输出端(9b),所述加热型蓄水箱(12)上设置有加热型蓄水箱第一输入端(12a)、加热型蓄水箱第一输出端(12b)、加热型蓄水箱第二输出端(12c)和加热型蓄水箱第二输入端(12d);所述加热型蓄水箱(12)同时是热水回路的组成部分,所述翅片管换热器(9)同时是空气回路的组成部分;The refrigerant circuit includes a compressor (1), a four-way valve (2), a first heat exchanger (3), a first one-way valve (4-1), a second one-way valve (4-2), Third check valve (4-3), fourth check valve (4-4), first solenoid valve (5-1), second solenoid valve (5-2), accumulator (6), drying a filter (7), an electronic expansion valve (8), a fin-and-tube heat exchanger (9), a gas-liquid separator (10), and a heating type water storage tank (12), which are disposed on the four-way valve (2) There is a four-way valve first input end (2a), a four-way valve first output end (2b), a four-way valve second input end (2c) and a four-way valve second output end (2d), the first change The heat exchanger (3) is provided with a first heat exchanger input end (3a) and a first heat exchanger output end (3b), and the finned tube heat exchanger (9) is provided with a finned tube heat exchanger An input end (9a) and a fin-tube heat exchanger output end (9b), wherein the heating-type water storage tank (12) is provided with a first input end (12a) of the heating type water storage tank and a heating type water storage tank An output end (12b), a second output end (12c) of the heating type storage tank, and a second input end (12d) of the heating type storage tank; the heating type storage tank (12) is also a component of the hot water circuit Part of the finned tube heat exchanger (9 ) is also an integral part of the air circuit;
    所述制冷剂回路中,压缩机(1)的输出端与四通阀第一输入端(2a)连接,四通阀第一输出端(2b)与第一换热器输入端(3a)连接,第一换热器输出端(3b)分成两路,一路与第一单向阀(4-1)的入口连接,另一路与第三单向阀(4-3)的出口连接,第一单向阀(4-1)的出口分成三路,一路与第二单向阀(4-2)的出口连接,一路通过第一电磁阀(5-1)与储液器(6)的输入端连接,另一路通过第二电磁阀(5-2)与加热型蓄水箱第一输入端(12a)连接,加热型蓄水箱第一输出端(12b)也与储液器(6)的输入端连接,储液器(6)的输出端通过干燥过滤器(7)、电子膨胀阀(8)同时与第四单向阀(4-4)的入口和第三单向阀(4-3)的入口连接,第四单向阀(4-4)的出口与翅片管换热器输入端(9a)连接,翅片管换热器输入端(9a)同时还与第二单向阀(4-2)的入口连接,翅片管换热器输出端(9b)与四通阀第二输入端(2c)连接,四通阀第二输出端(2d)与气液分离器(10)的输入端连接,气液分离器(10)的输出端与压缩机(1)的输入端连接;In the refrigerant circuit, the output end of the compressor (1) is connected to the first input end (2a) of the four-way valve, and the first output end (2b) of the four-way valve is connected to the input end (3a) of the first heat exchanger. The first heat exchanger output end (3b) is divided into two paths, one is connected to the inlet of the first one-way valve (4-1), and the other is connected to the outlet of the third one-way valve (4-3), first The outlet of the check valve (4-1) is divided into three paths, one is connected to the outlet of the second check valve (4-2), and the other is passed through the input of the first solenoid valve (5-1) and the accumulator (6). The other end is connected to the first input end (12a) of the heating type water storage tank through the second electromagnetic valve (5-2), and the first output end (12b) of the heating type water storage tank is also connected with the liquid accumulator (6) The input end is connected, and the output end of the accumulator (6) passes through the drying filter (7), the electronic expansion valve (8) and the inlet of the fourth check valve (4-4) and the third check valve (4) -3) inlet connection, the outlet of the fourth check valve (4-4) is connected to the fin tube heat exchanger input end (9a), and the finned tube heat exchanger input end (9a) is also connected to the second single Connected to the inlet of the valve (4-2), the output end of the finned tube heat exchanger (9b) is connected to the second input end (2c) of the four-way valve, the four-way A second output terminal (2d) and the gas-liquid separator (10) is connected to an input terminal, an output terminal of the gas-liquid separator (10) and the compressor (1) is connected to an input terminal;
    所述热水回路包括加热型蓄水箱(12)、过滤器(13)、水泵(14)、喷嘴(15)、电加热带(16)、集水盘(17)、三通阀(18),所述三通阀(18)上设置有三通阀第一输入端(18a)、三通阀第一输出端(18b)和三通阀第二输出端(18c); The hot water circuit includes a heating type water storage tank (12), a filter (13), a water pump (14), a nozzle (15), an electric heating belt (16), a water collecting tray (17), and a three-way valve (18). The three-way valve (18) is provided with a three-way valve first input end (18a), a three-way valve first output end (18b) and a three-way valve second output end (18c);
    所述热水回路中,加热型蓄水箱第二输出端(12c)依次通过过滤器(13)、水泵(14)与喷嘴(15)连接,喷嘴(15)正对翅片管换热器(9)的进风口,集水盘(17)位于翅片管换热器(9)底部,集水盘(17)底部的出水口与三通阀第一输入端(18a)连接,三通阀第一输出端(18b)与加热型蓄水箱第二输入端(12d)连接,三通阀第二输出端(18c)与排水管道连接,电加热带(16)安装于喷嘴(15)外表面;In the hot water circuit, the second output end (12c) of the heating type water storage tank is sequentially connected to the nozzle (15) through the filter (13), the water pump (14), and the nozzle (15) is opposite to the fin tube heat exchanger. (9) air inlet, the water collecting tray (17) is located at the bottom of the finned tube heat exchanger (9), and the water outlet at the bottom of the water collecting tray (17) is connected with the first input end (18a) of the three-way valve, the three-way The first output end (18b) of the valve is connected to the second input end (12d) of the heating type storage tank, the second output end (18c) of the three-way valve is connected to the drain pipe, and the electric heating belt (16) is mounted on the nozzle (15) The outer surface;
    所述空气回路包括翅片管换热器(9)和风机(11),所述风机(11)设置在翅片管换热器(9)出风口处。The air circuit includes a finned tube heat exchanger (9) and a fan (11), and the fan (11) is disposed at an air outlet of the fin tube heat exchanger (9).
  2. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,该装置在非结霜工况运行时,第一电磁阀(5-1)打开,第二电磁阀(5-2)关闭;该装置在结霜工况运行时,第一电磁阀(5-1)关闭,第二电磁阀(5-2)打开,制冷剂流经加热型蓄水箱(12)。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein the first electromagnetic valve (5-1) is operated when the device is not in a frosting condition Open, the second solenoid valve (5-2) is closed; when the device is operating in the frosting condition, the first solenoid valve (5-1) is closed, the second solenoid valve (5-2) is opened, and the refrigerant flows through Heated storage tank (12).
  3. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,所述热水回路中加热热水的热量来源于制冷剂过冷放出的热量,无需额外增加热源。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein the heat of the hot water in the hot water circuit is derived from the supercooling of the refrigerant. Heat, no additional heat source is needed.
  4. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,当翅片管换热器(9)表面需除霜时,水泵(14)启动,热水通过喷嘴(15)喷淋于翅片管换热器(9)表面的霜层,实现霜层融化。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein when the surface of the fin tube heat exchanger (9) needs to be defrosted, the water pump (14) Starting, hot water is sprayed through the nozzle (15) on the frost layer on the surface of the fin-tube heat exchanger (9) to melt the frost layer.
  5. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,所述翅片管换热器(9)为超疏水型翅片管换热器,利用超疏水型翅片管换热器表面对水滴的低粘附特性,使所喷热水及融霜水从翅片表面自行脱落。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein the fin tube heat exchanger (9) is a superhydrophobic fin tube exchange The heat exchanger utilizes the low adhesion property of the surface of the superhydrophobic finned tube heat exchanger to the water droplets, so that the sprayed hot water and the frosted water fall off from the surface of the fin.
  6. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,所述风机(11)为可换向变速风机,对尚滞留翅片表面的少量水滴,通过风机换向和提高风速吹除。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein the fan (11) is a reversible variable speed fan, and the surface of the fin is still retained. A small amount of water droplets are reversed by the fan and the wind speed is increased.
  7. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,其特征在于,所述热水回路中,通过三通阀(18)向加热型蓄水箱(12)内进行补水。The air source heat pump spray defrosting device based on a superhydrophobic finned tube heat exchanger according to claim 1, wherein the hot water circuit is heated to a type by a three-way valve (18) Replenishment is carried out in the tank (12).
  8. 根据权利要求1所述的基于超疏水型翅片管换热器的空气源热泵喷淋除霜装置,所述热水回路上各设备和各段管道均进行保温,防止气温较低时回路冻结。 The air source heat pump spray defrosting device based on the superhydrophobic finned tube heat exchanger according to claim 1, wherein each device and each section of the hot water circuit are insulated to prevent the circuit from freezing when the temperature is low. .
PCT/CN2016/073263 2015-10-13 2016-02-03 Air source heat pump spray defrosting device based on super-hydrophobic finned tube heat exchanger WO2017063321A1 (en)

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