CN106196380A - A kind of cold-producing medium heat of subcooling recycling recuperation of heat air-treatment unit - Google Patents
A kind of cold-producing medium heat of subcooling recycling recuperation of heat air-treatment unit Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
- F24F12/003—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid using a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
本发明的一种制冷剂过冷热量再利用热回收空气处理机组及空气处理方法以及各部件的调节控制方法，包括新风箱、排风箱以及热泵机组，所述的新风箱与排风箱相邻设置，所述的热泵机组设置在新风箱以及排风箱内部；与现有技术相比：空气处理机组在夏季运行工况下利用制冷剂过冷所放热量，使低温空气被加热至合适的送风温度；在冬季运行工况下利用制冷剂过冷所放热量，预热室外低温空气，避免回风直接与室外新风混合产生凝结水，无需设置电加热器浪费高品位能源以及热水、蒸汽加热所需的额外热源；同时，该机组利用热泵机组回收室内排风热量，实现空气处理机组的冬夏季高效运行。
The invention relates to a refrigerant subcooling heat reuse heat recovery air treatment unit, an air treatment method and an adjustment and control method for each component, including a fresh air box, an exhaust box and a heat pump unit, the fresh air box and the exhaust box Adjacently arranged, the heat pump unit is arranged inside the fresh air box and the exhaust box; compared with the prior art: the air handling unit uses the heat released by the supercooling of the refrigerant in summer operating conditions to heat the low-temperature air to Appropriate air supply temperature; under winter operating conditions, the heat released by the supercooling of the refrigerant is used to preheat the outdoor low-temperature air, avoiding the return air directly mixing with the outdoor fresh air to produce condensed water, and there is no need to set up electric heaters to waste high-grade energy and heat. The additional heat source required for water and steam heating; at the same time, the unit uses the heat pump unit to recover the heat of indoor exhaust air, so as to realize the efficient operation of the air handling unit in winter and summer.
Description
技术领域technical field
本发明涉及暖通空调技术领域，具体涉及一种制冷剂过冷热量再利用热回收空气处理机组。The invention relates to the technical field of heating, ventilating and air conditioning, in particular to a heat recovery air handling unit for reusing refrigerant supercooled heat.
背景技术Background technique
随着社会生活质量的不断改善，人们对室内环境舒适度要求越来越高，空气调节系统对空气的温度、湿度等进行处理以满足人们的需求。对于夏季舒适性空调，空调送风温度和室内温度差不宜大于10℃。一次回风式机组将空气处理至露点温度，为满足送风温差的要求，通常还要采用电加热方式再热空气，存在明显的冷热抵消现象。二次回风式机组利用二次回风再热低温空气，但存在操作运行管理复杂，露点降低，机组运行效率较低等问题。With the continuous improvement of the quality of social life, people have higher and higher requirements for the comfort of the indoor environment. The air conditioning system processes the temperature and humidity of the air to meet people's needs. For summer comfort air conditioners, the difference between the air supply temperature of the air conditioner and the indoor temperature should not be greater than 10°C. The primary return air unit processes the air to the dew point temperature. In order to meet the requirements of the temperature difference of the supply air, it usually uses electric heating to reheat the air, and there is an obvious phenomenon of cold and heat offsetting. The secondary return air unit uses the secondary return air to reheat the low-temperature air, but there are problems such as complex operation and management, lower dew point, and lower unit operating efficiency.
空气处理机组在冬季工况下运行，在冬季室外空气温度较低时，室内回风与室外空气直接混合，混合空气达到饱和状态将产生凝结水；当室外空气焓值低于一定值时，室内回风和新风混合后的空气无法处理到送风状态点，因此需要对室外温度较低新风进行预热处理。The air handling unit operates in winter conditions. When the outdoor air temperature is low in winter, the indoor return air is directly mixed with the outdoor air. When the mixed air reaches saturation, condensed water will be generated; when the enthalpy of the outdoor air is lower than a certain value, the indoor The air mixed with return air and fresh air cannot be processed to the point of supply air, so it is necessary to preheat the fresh air with a lower outdoor temperature.
发明内容Contents of the invention
本发明提供的一种制冷剂过冷热量再利用热回收空气处理机组，利用制冷剂过冷热量对夏季低温空气再热和冬季室外空气预热，并回收室内排风热量，以较高效率运行，实现节能减排的目的。The invention provides a refrigerant supercooling heat recovery heat recovery air handling unit, which uses the refrigerant supercooling heat to reheat the low-temperature air in summer and preheat the outdoor air in winter, and recovers the indoor exhaust air heat to achieve higher Efficient operation to achieve the purpose of energy saving and emission reduction.
本发明提供的一种制冷剂过冷热量再利用热回收空气处理机组，包括新风箱、排风箱以及热泵机组，所述的新风箱与排风箱相邻设置，所述的热泵机组设置在新风箱以及排风箱内部；The invention provides an air handling unit for heat recovery from refrigerant subcooling, which includes a fresh air box, an exhaust box and a heat pump unit, the fresh air box and the exhaust box are arranged adjacently, and the heat pump unit is arranged Inside the fresh air box and exhaust box;
所述的热泵机组包括压缩机、四通换向阀、排风热回收段换热器、新风预热段换热器、混合空气处理段换热器、混合空气再热段换热器、电子膨胀阀，其中，所述的混合空气处理段换热器第一端口、排风热回收段换热器第一端口和压缩机的两个端口分别连接所述的四通换向阀的四个端口；所述排风热回收段换热器的第二端口连接第一电子三通调节阀的第一端口，第一电子三通调节阀的第二端口连接混合空气再热段换热器的第一端口，混合空气再热段换热器第二端口连接第一电磁阀的第一端口，第一电磁阀的第二端口分两路，一路连接第一电子三通调节阀的第三端口，另一路连接电子膨胀阀的第一端口；电子膨胀阀的第二端口分两路，一路连接第二电磁阀的第一端口，另一路连接第二电子三通调节阀的第三端口；第二电磁阀的第二端口连接新风预热换热器的第二端口，新风预热换热器的第一端口连接第二电子三通调节阀的第二端口，第二电子三通调节阀的第一端口连接混合空气处理段换热器的第二端口。The heat pump unit includes a compressor, a four-way reversing valve, a heat exchanger in the exhaust air heat recovery section, a heat exchanger in the fresh air preheating section, a heat exchanger in the mixed air processing section, a heat exchanger in the mixed air reheating section, and an electronic Expansion valve, wherein, the first port of the heat exchanger in the mixed air treatment section, the first port of the heat exchanger in the exhaust air heat recovery section, and the two ports of the compressor are respectively connected to the four ports of the four-way reversing valve. port; the second port of the exhaust air heat recovery section heat exchanger is connected to the first port of the first electronic three-way regulating valve, and the second port of the first electronic three-way regulating valve is connected to the port of the mixed air reheating section heat exchanger The first port, the second port of the heat exchanger in the mixed air reheating section is connected to the first port of the first solenoid valve, the second port of the first solenoid valve is divided into two routes, one is connected to the third port of the first electronic three-way regulating valve , the other is connected to the first port of the electronic expansion valve; the second port of the electronic expansion valve is divided into two routes, one is connected to the first port of the second solenoid valve, and the other is connected to the third port of the second electronic three-way regulating valve; The second port of the second solenoid valve is connected to the second port of the fresh air preheating heat exchanger, the first port of the fresh air preheating heat exchanger is connected to the second port of the second electronic three-way regulating valve, and the second port of the second electronic three-way regulating valve The first port is connected to the second port of the mixed air handling section heat exchanger.
所述的新风箱在风的输送方向依次设置有第一新风入口，新风预热段换热器，混合空气处理段换热器，混合空气再热段换热器，加湿器，送风机，之后到达送风口；所述的新风预热段换热器，混合空气处理段换热器之间的管道壁上设置有回风口；The fresh air box is provided with a first fresh air inlet, a heat exchanger in the fresh air preheating section, a heat exchanger in the mixed air processing section, a heat exchanger in the mixed air reheating section, a humidifier, and a blower in the air conveying direction, and then reaches An air supply port; the heat exchanger in the fresh air preheating section and the heat exchanger in the mixed air treatment section are provided with a return air port on the pipe wall;
所述的排风箱在风的排出方向上依次设置有排风入口，排风热回收段换热器，排风机，之后到达排风出口；所述的排风入口，排风热回收段换热器之间的管道壁上设置有第二新风入口。The exhaust air box is sequentially provided with an exhaust air inlet, an exhaust air heat recovery section heat exchanger, an exhaust fan, and then reaches an exhaust air outlet in the direction of wind discharge; the exhaust air inlet, exhaust air heat recovery section exchange A second fresh air inlet is arranged on the pipe wall between the heaters.
制冷剂过冷热量再利用热回收空气处理机组的夏季空气处理方法：Refrigerant Subcooling Heat Reuse Heat Recovery Air Handling Unit Summer Air Handling Method:
新风经第一新风入口进入新风预热段换热器，新风在新风预热段换热器中不作处理，之后与回风口进入的室内回风混合。混合空气进入混合空气处理段换热器，混合空气在混合空气处理段换热器中与低温低压制冷剂液体换热，低温低压制冷剂液体沸腾蒸发吸热，混合空气被处理至露点温度，混合空气温度、湿度降低，之后进入混合空气再热段换热器，空气在混合空气再热段换热器中与高温高压制冷剂液体换热，高温高压制冷剂进一步冷却过冷，混合空气温度升高至合适的送风状态点，最后的混合空气由送风机经送风出口送入室内吸收室内的余热和余湿。The fresh air enters the heat exchanger of the fresh air preheating section through the first fresh air inlet, and the fresh air is not processed in the heat exchanger of the fresh air preheating section, and then mixed with the indoor return air entering the return air outlet. The mixed air enters the heat exchanger of the mixed air treatment section, where the mixed air exchanges heat with the low-temperature and low-pressure refrigerant liquid, and the low-temperature and low-pressure refrigerant liquid boils and evaporates to absorb heat, and the mixed air is processed to the dew point temperature, and mixed The air temperature and humidity decrease, and then enter the heat exchanger in the mixed air reheat section, where the air exchanges heat with the high-temperature and high-pressure refrigerant liquid, and the high-temperature and high-pressure refrigerant is further cooled and supercooled, and the temperature of the mixed air rises Up to the appropriate air supply state point, the final mixed air is sent into the room by the blower through the air supply outlet to absorb the residual heat and humidity in the room.
排风经排风入口进入排风热回收段换热器，室内温度较低排风在排风热回收换热器中与高温高压制冷剂气体换热，制冷剂气体被冷凝至饱和制冷剂液体，排风被加热升温，空气处理机组利用热泵机组回收室内温度较低排风空气冷量，同时提高了热泵机组夏季的工作效率；当室内低温排风与排风热回收段换热器中制冷剂换热量不足时，可调节新风引入比例来满足排风热回收段换热器的换热量；新风经第二新风入口进入空气处理机组，与室内排风混合，增大排风热回收换热器中空气流量，使排风热回收段换热器稳定运行。室内排风或室内排风、新风混合空气在排风热回收段换热器中被加热升温，最后由排风机经排风出口送入室外环境。The exhaust air enters the exhaust air heat recovery section heat exchanger through the exhaust air inlet, and the exhaust air with low indoor temperature exchanges heat with high-temperature and high-pressure refrigerant gas in the exhaust air heat recovery heat exchanger, and the refrigerant gas is condensed to saturated refrigerant liquid , the exhaust air is heated up, and the air handling unit uses the heat pump unit to recover the cooling capacity of the exhaust air with low indoor temperature, and at the same time improves the working efficiency of the heat pump unit in summer; when the indoor low temperature exhaust air and the heat recovery section of the exhaust air are cooled When the heat exchange capacity of the agent is insufficient, the proportion of fresh air introduction can be adjusted to meet the heat exchange heat exchange rate of the exhaust air heat recovery section; the fresh air enters the air handling unit through the second fresh air inlet, and is mixed with the indoor exhaust air to increase the exhaust air heat recovery The air flow in the heat exchanger ensures the stable operation of the heat exchanger in the exhaust air heat recovery section. The indoor exhaust air or the mixed air of indoor exhaust air and fresh air is heated in the heat exchanger of the exhaust air heat recovery section, and finally sent to the outdoor environment by the exhaust fan through the exhaust outlet.
制冷剂过冷热量再利用热回收空气处理机组的冬季空气处理方法：Refrigerant subcooling heat reuse heat recovery air handling unit winter air treatment method:
新风经第一新风入口进入空气处理机组的新风预热段换热器。空气处理机组在冬季工况运行时，室外新风温度较低，在新风预热段换热器中与高温高压制冷剂液体换热，制冷剂液体进一步冷却过冷，空气温度升高，避免室内回风直接与室外低温新风混合产生凝结水；室外新风经新风预热段换热器预热升温之后与进入回风口的室内回风混合，混合空气进入混合空气处理段换热器；混合空气在混合空气处理段换热器中与高温高压制冷剂气体换热，制冷剂气体被冷凝至饱和制冷剂液体，空气被加热升温，之后进入混合空气再热段换热器。空气在混合空气再热段换热器中不作处理，之后进入加热器被加湿，空气被处理至送风状态点；最后，空气由送风机经送风出口送入室内。The fresh air enters the heat exchanger of the fresh air preheating section of the air handling unit through the first fresh air inlet. When the air handling unit is running in winter, the outdoor fresh air temperature is low, and it exchanges heat with the high-temperature and high-pressure refrigerant liquid in the heat exchanger of the fresh air preheating section. The wind is directly mixed with the outdoor low-temperature fresh air to produce condensed water; the outdoor fresh air is preheated by the heat exchanger in the fresh air preheating section and then mixed with the indoor return air entering the return air outlet, and the mixed air enters the heat exchanger in the mixed air processing section; The heat exchanger in the air processing section exchanges heat with the high-temperature and high-pressure refrigerant gas. The refrigerant gas is condensed to saturated refrigerant liquid, the air is heated up, and then enters the mixed air reheating section heat exchanger. The air is not processed in the heat exchanger of the mixed air reheating section, and then enters the heater to be humidified, and the air is treated to the point of the air supply state; finally, the air is sent into the room by the blower through the air supply outlet.
排风经排风入口进入排风热回收段换热器，室内温度较高的排风在排风热回收换热器中与低温低压制冷剂液体换热，制冷剂液体沸腾蒸发吸热，排风温度降低。空气处理机组利用热泵机组回收室内温度较高排风空气热量，同时提高了热泵机组冬季的工作效率。当室内温度较高排风与排风热回收段换热器中制冷剂换热量不足时，可调节新风引入比例来满足排风热回收段换热器的换热量。新风经第二新风入口进入空气处理机组，与室内排风混合，增大排风热回收换热器中空气流量，使排风热回收段换热器稳定运行。室内排风或室内排风、新风混合空气在排风热回收段换热器中被冷却降温，最后由排风机经排风出口送入室外环境。The exhaust air enters the exhaust air heat recovery section heat exchanger through the exhaust air inlet. The exhaust air with high indoor temperature exchanges heat with the low-temperature and low-pressure refrigerant liquid in the exhaust air heat recovery heat exchanger. The refrigerant liquid boils and evaporates to absorb heat, and the exhaust air Wind temperature drops. The air handling unit uses the heat pump unit to recover the heat of the exhaust air with higher indoor temperature, and at the same time improves the working efficiency of the heat pump unit in winter. When the indoor temperature is high and the heat exchange capacity of the refrigerant in the heat exchanger of the exhaust air and exhaust air heat recovery section is insufficient, the ratio of fresh air introduction can be adjusted to meet the heat exchange heat exchange capacity of the heat exchanger of the exhaust air heat recovery section. The fresh air enters the air handling unit through the second fresh air inlet, and mixes with the indoor exhaust air to increase the air flow in the exhaust air heat recovery heat exchanger, so that the heat exchanger in the exhaust air heat recovery section operates stably. The indoor exhaust air or the mixed air of indoor exhaust air and fresh air is cooled in the heat exchanger of the exhaust air heat recovery section, and finally sent to the outdoor environment by the exhaust fan through the exhaust outlet.
制冷剂过冷热量再利用热回收空气处理机组的夏季时各部件调节控制方法：Refrigerant subcooling heat reuse heat recovery air handling unit adjustment and control method of each component in summer:
空气处理机组在夏季工况运行时，第一电磁阀打开，第一电子三通调节阀调节进入混合空气再热段换热器制冷剂流量，第二电磁阀关闭，第二电子三通调节阀将制冷剂全部旁通，制冷剂不经过新风预热段换热器，此时，热泵机组处于制冷工况下运行，排风热回收段换热器作为冷凝器使用，混合空气再热段换热器作为制冷剂过冷换热器使用，混合空气处理段换热器作为蒸发器使用。When the air handling unit is running in summer, the first solenoid valve is opened, the first electronic three-way regulating valve regulates the flow of refrigerant entering the heat exchanger in the mixed air reheating section, the second solenoid valve is closed, and the second electronic three-way regulating valve All the refrigerant is bypassed, the refrigerant does not pass through the heat exchanger in the fresh air preheating section. The heat exchanger is used as a refrigerant subcooling heat exchanger, and the mixed air handling section heat exchanger is used as an evaporator.
压缩机第一端口高温高压制冷剂气体经四通换向阀的第一端口和第二端口进入排风热回收段换热器的第一端口与室内低温排风或室内排风、室外新风混合空气换热，高温高压制冷剂气体被冷凝至高温高压制冷剂液体。排风热回收段换热器中制冷剂与温度较低的室内排风或室内排风、室外新风混合空气换热，增大换热温差，增强了排风热回收段换热器换热效果，提高了热泵机组的运行效率。高温高压制冷剂液体由排风热回收段换热器的第二端口流出，进入第一电子三通调节阀第一端口，一部分制冷剂由第一电子三通调节阀的第二端口流出，其余部分制冷剂由第一电子三通调节阀的第三端口流出；在第一电子三通调节阀的第二端口流出的制冷剂进入混合空气再热段换热器的第一端口，高温高压制冷剂液体进一步冷却过冷，放出热量作为低温空气再热热源。第一电子三通调节阀通过调节进入混合空气再热段换热器的制冷剂流量，调节低温空气与制冷剂换热量，使低温空气被加热至合适的送风温度。过冷后制冷剂液体由混合空气再热段换热器的第二端口流出，与第一电子三通调节阀的第三端口流出的制冷剂混合，进入电子膨胀阀节流，高温高压制冷剂液体节流变为低温低压制冷剂液体。低温低压制冷剂液体进入第二电子三通调节阀的第三端口(第二电磁阀关闭)，之后制冷剂液体由第二电子三通调节阀的第一端口流出，进入混合空气处理段换热器的第二端口与混合空气换热。混合空气处理段换热器将空气处理至露点温度，低温低压制冷剂液体沸腾蒸发变为低温低压制冷剂气体。低温低压制冷剂气体由混合空气处理段换热器第一端口流出，经四通换向阀的第三端口和第四端口回到压缩机第二端口，被压缩机压缩至高温高压制冷剂气体，进入下一个制冷剂循环。The high-temperature and high-pressure refrigerant gas at the first port of the compressor enters the first port of the exhaust air heat recovery section heat exchanger through the first port and the second port of the four-way reversing valve, and is mixed with indoor low-temperature exhaust air or indoor exhaust air and outdoor fresh air Air heat exchange, high temperature and high pressure refrigerant gas is condensed to high temperature and high pressure refrigerant liquid. The refrigerant in the heat exchanger of the exhaust air heat recovery section exchanges heat with the low-temperature indoor exhaust air or the mixed air of indoor exhaust air and outdoor fresh air, which increases the heat exchange temperature difference and enhances the heat exchange effect of the heat exchanger in the exhaust air heat recovery section , improve the operating efficiency of the heat pump unit. The high-temperature and high-pressure refrigerant liquid flows out from the second port of the heat exchanger in the exhaust air heat recovery section, and enters the first port of the first electronic three-way regulating valve, part of the refrigerant flows out from the second port of the first electronic three-way regulating valve, and the rest Part of the refrigerant flows out from the third port of the first electronic three-way regulating valve; the refrigerant flowing out of the second port of the first electronic three-way regulating valve enters the first port of the heat exchanger in the mixed air reheating section, and the high-temperature and high-pressure refrigeration The agent liquid is further cooled and supercooled, and the heat is released as a heat source for reheating the low-temperature air. The first electronic three-way regulating valve regulates the heat exchange between the low-temperature air and the refrigerant by regulating the flow of refrigerant entering the heat exchanger in the mixed air reheating section, so that the low-temperature air is heated to an appropriate air supply temperature. After subcooling, the refrigerant liquid flows out of the second port of the heat exchanger in the mixed air reheating section, mixes with the refrigerant flowing out of the third port of the first electronic three-way regulating valve, and enters the electronic expansion valve for throttling, high temperature and high pressure refrigerant Liquid throttling becomes low temperature and low pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid enters the third port of the second electronic three-way regulating valve (the second solenoid valve is closed), and then the refrigerant liquid flows out from the first port of the second electronic three-way regulating valve and enters the mixed air treatment section for heat exchange The second port of the device exchanges heat with the mixed air. The heat exchanger in the mixed air treatment section treats the air to the dew point temperature, and the low-temperature and low-pressure refrigerant liquid boils and evaporates to become a low-temperature and low-pressure refrigerant gas. The low-temperature and low-pressure refrigerant gas flows out of the first port of the heat exchanger in the mixed air treatment section, returns to the second port of the compressor through the third port and the fourth port of the four-way reversing valve, and is compressed by the compressor to high-temperature and high-pressure refrigerant gas , into the next refrigerant cycle.
制冷剂过冷热量再利用热回收空气处理机组的冬季时各部件调节控制方法：Refrigerant subcooling heat reuse heat recovery air handling unit adjustment control method for each component in winter:
空气处理机组在冬季工况运行时，第一电磁阀关闭，第一电子三通调节阀将制冷剂全部旁通，制冷剂不经过混合空气再热段换热器，第二电磁阀打开，第二电子三通调节阀调节进入新风预热段换热器制冷剂流量。空气处理机组冬季运行时，热泵机组处于制热工况下运行，排风热回收段换热器作为蒸发器使用，混合空气处理段换热器作为冷凝器使用，新风预热段换热器作为制冷剂过冷换热器使用。When the air handling unit is running in winter conditions, the first solenoid valve is closed, the first electronic three-way regulating valve bypasses all the refrigerant, and the refrigerant does not pass through the heat exchanger in the mixed air reheating section, the second solenoid valve is opened, and the second The two-way three-way regulating valve regulates the flow of refrigerant entering the heat exchanger in the fresh air preheating section. When the air handling unit is running in winter, the heat pump unit is operating under heating conditions, the heat exchanger in the exhaust air heat recovery section is used as an evaporator, the heat exchanger in the mixed air handling section is used as a condenser, and the heat exchanger in the fresh air preheating section is used as a condenser. Refrigerant subcooling heat exchanger is used.
压缩机第一端口高温高压制冷剂气体经四通换向阀的第一端口和第四端口进入混合空气处理段换热器的第一端口与室外预热后新风、室内回风混合低温空气换热，高温高压制冷剂气体被冷凝至饱和制冷剂液体，低温空气被加热升温。高温高压饱和制冷剂液体由混合空气处理段换热器第二端口流出，进入第二电子三通调节阀的第一端口，一部分制冷剂由第二电子三通调节阀的第二端口流出，其余部分制冷剂由第二电子三通调节阀的第三端口流出；在第二电子三通调节阀的第二端口流出的制冷剂进入新风预热段换热器的第一端口，高温高压制冷剂液体进一步冷却过冷，放出热量作为室外低温空气预热热源，将室外较低温度新风预热升温，避免室内回风直接与室外新风混合产生凝结水。第二电子三通调节阀通过调节进入新风预热段换热器的制冷剂流量，调节室外低温空气与制冷剂换热量，使低温空气被制冷剂加热至合适的预热温度。过冷后制冷剂液体由新风预热段换热器第二端口流出，与第二电子三通调节阀的第三端口流出的制冷剂混合，进入电子膨胀阀节流，高温高压的制冷剂液体节流变为低温低压制冷剂液体。低温低压制冷剂液体进入第一电子三通调节阀的第三端口(第一电磁阀关闭)，之后制冷剂液体由第一电子三通调节阀的第一端口流出，进入排风热回收段换热器的第二端口与室内温度较高的排风或者室内排风、室外新风混合空气换热，低温低压制冷剂液体沸腾蒸发变为低温低压制冷剂气体。排风热回收段换热器中制冷剂与温度较高的室内排风或室内排风、室外新风混合空气换热，增大换热温差，增强了排风热回收段换热器换热效果，提高了热泵机组的运行效率。低温低压制冷剂气体由混合排风热回收段换热器的第一端口流出，经四通换向阀的第二端口和第三端口回到压缩机第二端口，被压缩至高温高压制冷剂气体，进入下一个制冷剂循环。The high-temperature and high-pressure refrigerant gas at the first port of the compressor enters the first port of the mixed air treatment section heat exchanger through the first port and the fourth port of the four-way reversing valve, and is exchanged with fresh air after outdoor preheating and indoor return air mixed with low-temperature air. Hot, high-temperature and high-pressure refrigerant gas is condensed to a saturated refrigerant liquid, and low-temperature air is heated to raise its temperature. The high-temperature and high-pressure saturated refrigerant liquid flows out from the second port of the heat exchanger in the mixed air processing section and enters the first port of the second electronic three-way regulating valve. Part of the refrigerant flows out from the second port of the second electronic three-way regulating valve, and the rest Part of the refrigerant flows out from the third port of the second electronic three-way regulating valve; the refrigerant flowing out of the second port of the second electronic three-way regulating valve enters the first port of the heat exchanger in the fresh air preheating section, and the high-temperature and high-pressure refrigerant The liquid is further cooled and supercooled, and the heat released is used as a heat source for outdoor low-temperature air preheating, which preheats and heats up the outdoor fresh air at a lower temperature, preventing the indoor return air from directly mixing with the outdoor fresh air to produce condensed water. The second electronic three-way regulating valve adjusts the flow of refrigerant entering the heat exchanger in the fresh air preheating section, and adjusts the heat exchange between the outdoor low-temperature air and the refrigerant, so that the low-temperature air is heated by the refrigerant to an appropriate preheating temperature. After subcooling, the refrigerant liquid flows out from the second port of the heat exchanger in the fresh air preheating section, mixes with the refrigerant flowing out of the third port of the second electronic three-way regulating valve, and enters the electronic expansion valve for throttling. The high-temperature and high-pressure refrigerant liquid Throttling becomes a low temperature and low pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid enters the third port of the first electronic three-way regulating valve (the first solenoid valve is closed), and then the refrigerant liquid flows out from the first port of the first electronic three-way regulating valve and enters the heat recovery section of the exhaust air. The second port of the heater exchanges heat with the exhaust air with higher indoor temperature or the mixed air of indoor exhaust air and outdoor fresh air, and the low-temperature and low-pressure refrigerant liquid boils and evaporates to become a low-temperature and low-pressure refrigerant gas. The refrigerant in the heat exchanger of the exhaust air heat recovery section exchanges heat with the indoor exhaust air with high temperature or the mixed air of indoor exhaust air and outdoor fresh air, which increases the heat exchange temperature difference and enhances the heat exchange effect of the heat exchanger in the exhaust air heat recovery section , improve the operating efficiency of the heat pump unit. The low-temperature and low-pressure refrigerant gas flows out of the first port of the heat exchanger in the mixed exhaust heat recovery section, returns to the second port of the compressor through the second port and the third port of the four-way reversing valve, and is compressed into a high-temperature and high-pressure refrigerant gas, enters the next refrigerant cycle.
一种制冷剂过冷热量再利用热回收空气处理机组，具有以下优点：A refrigerant subcooling heat reuse heat recovery air handling unit has the following advantages:
(1)空气处理机组在夏季运行工况下利用制冷剂过冷所放热量，使低温空气被加热至合适的送风温度；在冬季运行工况下利用制冷剂过冷所放热量，预热室外低温空气，避免回风直接与室外新风混合产生凝结水，无需设置电加热器浪费高品位能源以及热水、蒸汽加热所需的额外热源。(1) The air handling unit uses the heat released by the supercooling of the refrigerant under summer operating conditions to heat the low-temperature air to a suitable air supply temperature; under winter operating conditions, it uses the heat released by the supercooling of the refrigerant to preheat Outdoor low-temperature air avoids direct mixing of return air with outdoor fresh air to produce condensed water, and there is no need to set up electric heaters to waste high-grade energy and additional heat sources required for hot water and steam heating.
(2)夏季工况下，热泵机组冷凝器中制冷剂与室内温度较低排风换热，回收室内排风冷量，降低热泵机组冷凝压力和压缩机能耗；冬季工况下，热泵机组蒸发器中制冷剂与室内温度较高排风换热，回收室内排风热量，提高热泵机组蒸发压力，降低压缩机能耗，提高了机组夏季和冬季的工作效率，实现空气处理机组的冬夏季高效运行。(2) In summer working conditions, the refrigerant in the condenser of the heat pump unit exchanges heat with the low-temperature exhaust air in the room, recovers the cooling capacity of the indoor exhaust air, reduces the condensation pressure of the heat pump unit and the energy consumption of the compressor; in winter working conditions, the heat pump unit evaporates The refrigerant in the refrigerator exchanges heat with the exhaust air with high indoor temperature, recovers the heat of the indoor exhaust air, increases the evaporation pressure of the heat pump unit, reduces the energy consumption of the compressor, improves the working efficiency of the unit in summer and winter, and realizes the efficient operation of the air handling unit in winter and summer .
附图说明Description of drawings
图1是本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图中：1、压缩机；1a、压缩机第一端口；1b、压缩机第二端口；2、四通换向阀；2a、四通换向阀第一端口；2b、四通换向阀第二端口；2c、四通换向阀第三端口；2d、四通换向阀第四端口；3、排风热回收段换热器；3a、排风热回收段换热器第一端口；3b、排风热回收段换热器第二端口；4、第一电子三通调节阀；4a、第一电子三通调节阀第一端口；4b、第一电子三通调节阀第二端口；4c、第一电子三通调节阀第三端口；5、第一电磁阀；5a、第一电磁阀第一端口；5b、第一电磁阀第二端口；6、混合空气再热段换热器；6a、混合空气再热段换热器第一端口；6b、混合空气再热段换热器第二端口；7、电子膨胀阀；7a、电子膨胀阀第一端口；7b、电子膨胀阀第二端口；8、第二电子三通调节阀；8a、第二电子三通调节阀第一端口；8b、第二电子三通调节阀第二端口；8c、第二电子三通调节阀第三端口；9、第二电磁阀；9a、第二电磁阀第一端口；9b、第二电磁阀第二端口；10、新风预热段换热器；10a、新风预热段换热器第一端口；10b、新风预热段换热器第二端口；11、混合空气处理段换热器；11a、混合空气处理段换热器第一端口；11b、混合空气处理段换热器第二端口；12、加湿器；13、送风机；14、排风机；15、第一新风入口；16、回风口；17、送风出口；18、排风入口；19、第二新风入口；20、排风出口；In the figure: 1, the compressor; 1a, the first port of the compressor; 1b, the second port of the compressor; 2, the four-way reversing valve; 2a, the first port of the four-way reversing valve; 2b, the four-way reversing valve The second port; 2c, the third port of the four-way reversing valve; 2d, the fourth port of the four-way reversing valve; 3, the exhaust air heat recovery section heat exchanger; 3a, the first exhaust air heat recovery section heat exchanger port ; 3b, the second port of the heat exchanger in the exhaust heat recovery section; 4, the first electronic three-way regulating valve; 4a, the first port of the first electronic three-way regulating valve; 4b, the second port of the first electronic three-way regulating valve ; 4c, the third port of the first electronic three-way regulating valve; 5, the first solenoid valve; 5a, the first port of the first solenoid valve; 5b, the second port of the first solenoid valve; 6, the heat exchange of the mixed air reheating section 6a, the first port of the heat exchanger in the mixed air reheat section; 6b, the second port of the heat exchanger in the mixed air reheat section; 7, the electronic expansion valve; 7a, the first port of the electronic expansion valve; 7b, the electronic expansion valve The second port; 8, the second electronic three-way regulating valve; 8a, the first port of the second electronic three-way regulating valve; 8b, the second port of the second electronic three-way regulating valve; 8c, the second electronic three-way regulating valve Three ports; 9, the second solenoid valve; 9a, the first port of the second solenoid valve; 9b, the second port of the second solenoid valve; 10, the heat exchanger in the fresh air preheating section; 10a, the first port of the fresh air preheating section heat exchanger One port; 10b, the second port of the heat exchanger of the fresh air preheating section; 11, the heat exchanger of the mixed air treatment section; 11a, the first port of the heat exchanger of the mixed air treatment section; 11b, the second port of the heat exchanger of the mixed air treatment section Port; 12, humidifier; 13, air blower; 14, exhaust fan; 15, first fresh air inlet; 16, return air outlet; 17, air supply outlet; 18, exhaust air inlet; 19, second fresh air inlet; 20, row wind outlet;
具体实施方式detailed description
下面结合附图和具体实施例对本发明作进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明提供的一种制冷剂过冷热量再利用热回收空气处理机组，包括新风箱、排风箱以及热泵机组，所述的新风箱与排风箱相邻设置，所述的热泵机组设置在新风箱以及排风箱内部；The invention provides an air handling unit for heat recovery from refrigerant subcooling, which includes a fresh air box, an exhaust box and a heat pump unit, the fresh air box and the exhaust box are arranged adjacently, and the heat pump unit is arranged Inside the fresh air box and exhaust box;
所述的热泵机组包括压缩机1、四通换向阀2、排风热回收段换热器3、新风预热段换热器10、混合空气处理段换热器11、混合空气再热段换热器6、电子膨胀阀7，其中，所述的混合空气处理段换热器第一端口11a、排风热回收段换热器第一端口3a和压缩机1的两个端口分别连接四通换向阀2的四个端口；所述排风热回收段换热器第二端口3b连接第一电子三通调节阀第一端口4a，第一电子三通调节阀第二端口4b连接混合空气再热段换热器第一端口6a，混合空气再热段换热器第二端口6b连接第一电磁阀第一端口5a，第一电磁阀第二端口5b分两路，一路连接第一电子三通调节阀第三端口4c，另一路连接电子膨胀阀第一端口7a；电子膨胀阀第二端口7b分两路，一路连接第二电磁阀第一端口9a，另一路连接第二电子三通调节阀第三端口8c；第二电磁阀第二端口9b连接新风预热段换热器第二端口10b，新风预热换热器第一端口10a连接第二电子三通调节阀第二端口8b，第二电子三通调节阀第一端口8a连接混合空气处理段换热器第二端口11b。The heat pump unit includes a compressor 1, a four-way reversing valve 2, a heat exchanger 3 in the exhaust air heat recovery section, a heat exchanger 10 in the fresh air preheating section, a heat exchanger 11 in the mixed air processing section, and a mixed air reheating section Heat exchanger 6, electronic expansion valve 7, wherein, the first port 11a of the heat exchanger in the mixed air treatment section, the first port 3a of the heat exchanger in the exhaust air heat recovery section, and the two ports of the compressor 1 are respectively connected to four Lead to the four ports of the reversing valve 2; the second port 3b of the heat exchanger in the exhaust air heat recovery section is connected to the first port 4a of the first electronic three-way regulating valve, and the second port 4b of the first electronic three-way regulating valve is connected to the mixing The first port 6a of the heat exchanger in the air reheating section and the second port 6b of the heat exchanger in the mixed air reheating section are connected to the first port 5a of the first solenoid valve, and the second port 5b of the first solenoid valve is divided into two routes, one of which is connected to the first port The third port 4c of the electronic three-way regulating valve is connected to the first port 7a of the electronic expansion valve; The third port 8c of the regulating valve; the second port 9b of the second solenoid valve is connected to the second port 10b of the heat exchanger in the fresh air preheating section, and the first port 10a of the fresh air preheating heat exchanger is connected to the second port of the second electronic three-way regulating valve 8b, the first port 8a of the second electronic three-way regulating valve is connected to the second port 11b of the mixed air treatment section heat exchanger.
所述的新风箱在风的输送方向依次设置有第一新风入口15，新风预热段换热器10，混合空气处理段换热器11，混合空气再热段换热器6，加湿器12，送风机13，之后到达送风出口17；所述的新风预热段换热器10，混合空气处理段换热器11之间的管道壁上设置有回风口16；The fresh air box is sequentially provided with a first fresh air inlet 15, a heat exchanger 10 in the fresh air preheating section, a heat exchanger 11 in the mixed air processing section, a heat exchanger 6 in the mixed air reheating section, and a humidifier 12 in the conveying direction of the wind. , air blower 13, then reaches the air outlet 17; said fresh air preheating section heat exchanger 10, the pipe wall between the mixed air treatment section heat exchanger 11 is provided with a return air outlet 16;
所述的排风箱在风的排出方向上依次设置有排风入口18，排风热回收段换热器3，排风机14，之后到达排风出口20；所述的排风入口18，排风热回收段换热器3之间的管道壁上设置有第二新风入口19。The exhaust air box is provided with an exhaust air inlet 18, an exhaust air heat recovery section heat exchanger 3, and an exhaust fan 14 in sequence on the discharge direction of the wind, and then reaches the exhaust air outlet 20; the exhaust air inlet 18, exhaust air A second fresh air inlet 19 is provided on the pipe wall between the heat exchangers 3 in the air heat recovery section.
制冷剂过冷热量再利用热回收空气处理机组的夏季空气处理方法：Refrigerant Subcooling Heat Reuse Heat Recovery Air Handling Unit Summer Air Handling Method:
新风经第一新风入口15进入新风预热段换热器10，新风在新风预热段换热器10中不作处理，之后与回风口16进入的室内回风混合。混合空气进入混合空气处理段换热器11，混合空气在混合空气处理段换热器中与低温低压制冷剂液体换热，低温低压制冷剂液体沸腾蒸发吸热，混合空气被处理至露点温度，混合空气温度、湿度降低，之后进入混合空气再热段换热器6。空气在混合空气再热段换热器6中与高温高压制冷剂液体换热，制冷剂液体进一步冷却过冷，混合空气温度升高至合适的送风状态点，最后的混合空气由送风机13经送风出口17送入室内吸收室内的余热和余湿。The fresh air enters the fresh air preheating section heat exchanger 10 through the first fresh air inlet 15, and the fresh air is not processed in the fresh air preheating section heat exchanger 10, and then mixes with the indoor return air entered by the air return port 16. The mixed air enters the heat exchanger 11 of the mixed air treatment section, and the mixed air exchanges heat with the low-temperature and low-pressure refrigerant liquid in the mixed air treatment section heat exchanger. The low-temperature and low-pressure refrigerant liquid boils and evaporates to absorb heat, and the mixed air is processed to the dew point temperature. The temperature and humidity of the mixed air decrease, and then enter the heat exchanger 6 in the reheating section of the mixed air. The air exchanges heat with the high-temperature and high-pressure refrigerant liquid in the heat exchanger 6 of the mixed air reheating section. The refrigerant liquid is further cooled and supercooled, and the temperature of the mixed air rises to a suitable air supply state point. The final mixed air is passed through the blower 13 Air supply outlet 17 is sent into indoor absorption indoor waste heat and residual humidity.
排风经排风入口18进入排风热回收段换热器3，室内温度较低排风在排风热回收段换热器3中与高温高压制冷剂气体换热，制冷剂气体被冷凝至饱和制冷剂液体，排风被加热升温。空气处理机组利用热泵机组回收室内温度较低排风空气冷量，同时提高了热泵机组夏季的工作效率；当室内低温排风与排风热回收段换热器3中制冷剂换热量不足时，可调节新风引入比例来满足排风热回收段换热器3的换热量；新风经第二新风入口19进入空气处理机组，与室内排风混合，增大排风热回收段换热器3中空气流量，使排风热回收段换热器3稳定运行。室内排风或室内排风、新风混合空气在排风热回收段换热器3中被加热升温，最后由排风机14经排风出口20送入室外环境。The exhaust air enters the heat exchanger 3 of the exhaust air heat recovery section through the exhaust air inlet 18, and the exhaust air with low indoor temperature exchanges heat with the high-temperature and high-pressure refrigerant gas in the heat exchanger 3 of the exhaust air heat recovery section, and the refrigerant gas is condensed to Saturated refrigerant liquid, exhaust air is heated up. The air handling unit uses the heat pump unit to recover the cooling capacity of the exhaust air with low indoor temperature, and at the same time improves the working efficiency of the heat pump unit in summer; , the ratio of fresh air introduction can be adjusted to meet the heat exchange capacity of the heat exchanger 3 in the exhaust air heat recovery section; the fresh air enters the air handling unit through the second fresh air inlet 19, and is mixed with the indoor exhaust air, increasing the heat exchanger in the exhaust air heat recovery section 3 medium air flow, so that the exhaust air heat recovery section heat exchanger 3 runs stably. The indoor exhaust air or the mixed air of indoor exhaust air and fresh air is heated in the heat exchanger 3 of the exhaust air heat recovery section, and finally sent to the outdoor environment by the exhaust fan 14 through the exhaust air outlet 20 .
制冷剂过冷热量再利用热回收空气处理机组的冬季空气处理方法：Refrigerant subcooling heat reuse heat recovery air handling unit winter air treatment method:
新风经第一新风入口15进入新风预热段换热器10，空气处理机组在冬季工况运行时，室外新风温度较低，在新风预热段换热器10中与高温高压制冷剂液体换热，制冷剂液体进一步冷却过冷，空气温度升高，避免室内回风直接与室外低温新风混合产生凝结水；室外新风经新风预热段换热器10预热升温之后与进入回风口16的室内回风混合，混合空气进入混合空气处理段换热器11；混合空气在混合空气处理段换热器11中与高温高压制冷剂气体换热，制冷剂气体被冷凝至饱和制冷剂液体，空气被加热升温，之后进入混合空气再热段换热器6。空气在混合空气再热段换热器6中不作处理，之后进入加热器12被加湿，空气被处理至送风状态点；最后，空气由送风机13经送风出口送入室内。The fresh air enters the heat exchanger 10 in the fresh air preheating section through the first fresh air inlet 15. When the air handling unit is operating in winter, the temperature of the outdoor fresh air is relatively low. heat, the refrigerant liquid is further cooled and overcooled, and the air temperature rises to prevent the indoor return air from directly mixing with the outdoor low-temperature fresh air to produce condensed water; The indoor return air is mixed, and the mixed air enters the heat exchanger 11 of the mixed air treatment section; the mixed air exchanges heat with the high-temperature and high-pressure refrigerant gas in the mixed air treatment section heat exchanger 11, and the refrigerant gas is condensed to a saturated refrigerant liquid, and the air It is heated to raise the temperature, and then enters the heat exchanger 6 of the mixed air reheating section. The air is not processed in the heat exchanger 6 of the mixed air reheating section, and then enters the heater 12 to be humidified, and the air is treated to the air supply state point; finally, the air is sent into the room by the blower 13 through the air supply outlet.
排风经排风入口18进入排风热回收段换热器3，室内温度较高的排风在排风热回收换热器3中与低温低压制冷剂液体换热，制冷剂液体沸腾蒸发吸热，排风温度降低。空气处理机组利用热泵机组回收室内温度较高排风空气热量，同时提高了热泵机组冬季的工作效率；当室内温度较高排风与排风热回收段换热器3中制冷剂换热量不足时，可调节新风引入比例来满足排风热回收段换热器3的换热量；新风经第二新风入口19进入空气处理机组，与室内排风混合，增大排风热回收段换热器3中空气流量，使排风热回收段换热器3稳定运行。室内排风或室内排风、新风混合空气在排风热回收段换热器3中被冷却降温，最后由排风机14经排风出口20送入室外环境。The exhaust air enters the exhaust air heat recovery section heat exchanger 3 through the exhaust air inlet 18, and the exhaust air with relatively high indoor temperature exchanges heat with the low-temperature and low-pressure refrigerant liquid in the exhaust air heat recovery heat exchanger 3, and the refrigerant liquid boils, evaporates and absorbs heat. heat, the exhaust air temperature is lowered. The air handling unit uses the heat pump unit to recover the heat of the exhaust air with high indoor temperature, and at the same time improves the working efficiency of the heat pump unit in winter; when the indoor temperature is high, the heat exchange capacity of the refrigerant in the heat exchanger 3 of the exhaust air and exhaust air heat recovery section is insufficient , the ratio of fresh air introduction can be adjusted to meet the heat transfer capacity of the heat exchanger 3 in the exhaust air heat recovery section; the fresh air enters the air handling unit through the second fresh air inlet 19, and is mixed with the indoor exhaust air to increase the heat exchange in the exhaust air heat recovery section. The air flow rate in the device 3 is used to ensure the stable operation of the heat exchanger 3 in the heat recovery section of the exhaust air. The indoor exhaust air or the mixed air of indoor exhaust air and fresh air is cooled in the heat exchanger 3 of the exhaust air heat recovery section, and finally sent to the outdoor environment by the exhaust fan 14 through the exhaust air outlet 20 .
制冷剂过冷热量再利用热回收空气处理机组的夏季时各部件调节控制方法：Refrigerant subcooling heat reuse heat recovery air handling unit adjustment and control method of each component in summer:
空气处理机组在夏季工况运行时，第一电磁阀5打开，第一电子三通调节阀4调节进入混合空气再热段换热器6制冷剂流量，第二电磁阀9关闭，第二电子三通调节阀8将制冷剂全部旁通，制冷剂不经过新风预热段换热器10。此时，热泵机组处于制冷工况下运行，排风热回收段换热器3作为冷凝器使用，混合空气再热段换热器6作为制冷剂过冷换热器使用，混合空气处理段换热器11作为蒸发器使用。When the air handling unit is running in summer conditions, the first solenoid valve 5 is opened, the first electronic three-way regulating valve 4 regulates the flow of refrigerant entering the heat exchanger 6 in the mixed air reheating section, the second solenoid valve 9 is closed, and the second electronic three-way regulating valve 4 The three-way regulating valve 8 bypasses all the refrigerant, and the refrigerant does not pass through the heat exchanger 10 in the fresh air preheating section. At this time, the heat pump unit is operating under cooling conditions, the heat exchanger 3 in the exhaust air heat recovery section is used as a condenser, the heat exchanger 6 in the mixed air reheating section is used as a refrigerant subcooling heat exchanger, and the heat exchanger 6 in the mixed air treatment section is used as a condenser. Heater 11 is used as an evaporator.
压缩机第一端口1a高温高压制冷剂气体经四通换向阀的第一端口2a和第二端口2b进入排风热回收段换热器第一端口3a与室内低温排风或室内排风、室外新风混合空气换热，高温高压制冷剂气体被冷凝至高温高压制冷剂液体。排风热回收段换热器3中制冷剂与温度较低的室内排风或室内排风、室外新风混合空气换热，增大换热温差，增强了排风热回收段换热器换热效果，提高了热泵机组的运行效率。高温高压制冷剂液体由排风热回收段换热器第二端口3b流出，进入第一电子三通调节阀第一端口4a，一部分制冷剂由第一电子三通调节阀第二端口4b流出，其余部分制冷剂由第一电子三通调节阀的第三端口4c流出；在第一电子三通调节阀第二端口4b流出的制冷剂进入混合空气再热段换热器第一端口6a，高温高压制冷剂液体进一步冷却过冷，放出热量作为低温空气再热热源。第一电子三通调节阀4通过调节进入混合空气再热段换热器6的制冷剂流量，调节低温空气与制冷剂换热量，使低温空气被加热至合适的送风温度。过冷后制冷剂液体由混合空气再热段换热器第二端口6b流出，与第一电子三通调节阀第三端口4c流出的制冷剂混合，进入电子膨胀阀7节流，高温高压制冷剂液体节流变为低温低压制冷剂液体。低温低压制冷剂液体进入第二电子三通调节阀第三端口8c(第二电磁阀关闭)，之后制冷剂液体由第二电子三通调节阀第一端口8a流出，进入混合空气处理段换热器第二端口11b与混合空气换热。混合空气处理段换热器11将空气处理至露点温度，低温低压制冷剂液体沸腾蒸发变为低温低压制冷剂气体。低温低压制冷剂气体由混合空气处理段换热器第一端口11a流出，经四通换向阀2c第三端口和第四端口2d回到压缩机第二端口1b，被压缩机1压缩至高温高压制冷剂气体，进入下一个制冷剂循环。The high-temperature and high-pressure refrigerant gas at the first port 1a of the compressor enters the first port 3a of the heat exchanger in the heat recovery section of the exhaust air through the first port 2a and the second port 2b of the four-way reversing valve, and the indoor low-temperature exhaust air or indoor exhaust air, Outdoor fresh air is mixed with air for heat exchange, and the high-temperature and high-pressure refrigerant gas is condensed into high-temperature and high-pressure refrigerant liquid. The refrigerant in the heat exchanger 3 of the exhaust air heat recovery section exchanges heat with the low-temperature indoor exhaust air or the mixed air of indoor exhaust air and outdoor fresh air, which increases the heat exchange temperature difference and enhances the heat exchange of the heat exchanger in the exhaust air heat recovery section The effect is to improve the operating efficiency of the heat pump unit. The high-temperature and high-pressure refrigerant liquid flows out from the second port 3b of the heat exchanger in the exhaust air heat recovery section, and enters the first port 4a of the first electronic three-way regulating valve, and part of the refrigerant flows out from the second port 4b of the first electronic three-way regulating valve. The rest of the refrigerant flows out from the third port 4c of the first electronic three-way regulating valve; the refrigerant flowing out of the second port 4b of the first electronic three-way regulating valve enters the first port 6a of the heat exchanger in the mixed air reheating section, and the high temperature The high-pressure refrigerant liquid is further cooled and supercooled, releasing heat as a heat source for reheating the low-temperature air. The first electronic three-way regulating valve 4 regulates the amount of heat exchange between the low-temperature air and the refrigerant by regulating the flow of refrigerant entering the heat exchanger 6 in the mixed air reheating section, so that the low-temperature air is heated to an appropriate air supply temperature. After supercooling, the refrigerant liquid flows out from the second port 6b of the heat exchanger in the mixed air reheating section, mixes with the refrigerant flowing out of the third port 4c of the first electronic three-way regulating valve, and enters the electronic expansion valve 7 to throttle, high temperature and high pressure refrigeration The throttling of the refrigerant liquid becomes a low-temperature and low-pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid enters the third port 8c of the second electronic three-way regulating valve (the second solenoid valve is closed), and then the refrigerant liquid flows out from the first port 8a of the second electronic three-way regulating valve, and enters the mixed air treatment section for heat exchange The second port 11b of the device exchanges heat with the mixed air. The heat exchanger 11 in the mixed air treatment section treats the air to the dew point temperature, and the low-temperature and low-pressure refrigerant liquid boils and evaporates to become a low-temperature and low-pressure refrigerant gas. The low-temperature and low-pressure refrigerant gas flows out of the first port 11a of the heat exchanger in the mixed air treatment section, and returns to the second port 1b of the compressor through the third port and the fourth port 2d of the four-way reversing valve 2c, and is compressed by the compressor 1 to a high temperature The high-pressure refrigerant gas enters the next refrigerant cycle.
制冷剂过冷热量再利用热回收空气处理机组的冬季时各部件调节控制方法：Refrigerant subcooling heat reuse heat recovery air handling unit adjustment control method for each component in winter:
空气处理机组在冬季工况运行时，第一电磁阀关闭5，第一电子三通调节阀4将制冷剂全部旁通，制冷剂不经过混合空气再热段换热器6，第二电磁阀9打开，第二电子三通调节阀8调节进入新风预热段换热器制冷剂流量。空气处理机组冬季运行时，热泵机组处于制热工况下运行，排风热回收段换热器3作为蒸发器使用，混合空气处理段换热器11作为冷凝器使用，新风预热段换热器10作为制冷剂过冷换热器使用。When the air handling unit is running in winter conditions, the first solenoid valve is closed 5, the first electronic three-way regulating valve 4 bypasses all the refrigerant, and the refrigerant does not pass through the mixed air reheating section heat exchanger 6, and the second solenoid valve 9 is opened, and the second electronic three-way regulating valve 8 regulates the flow of refrigerant entering the heat exchanger in the fresh air preheating section. When the air handling unit is running in winter, the heat pump unit is running under heating conditions, the heat exchanger 3 in the exhaust air heat recovery section is used as an evaporator, the heat exchanger 11 in the mixed air handling section is used as a condenser, and the fresh air preheating section is used for heat exchange The device 10 is used as a refrigerant subcooling heat exchanger.
压缩机第一端口1a高温高压制冷剂气体经四通换向阀的第一端口2a和第四端口2d进入混合空气处理段换热器第一端口11a与室外预热后新风、室内回风混合低温空气换热，高温高压制冷剂气体被冷凝至饱和制冷剂液体，低温空气被加热升温。高温高压饱和制冷剂液体由混合空气处理段换热器第二端口11b流出，进入第二电子三通调节阀第一端口8a，一部分制冷剂由第二电子三通调节阀第二端口8b流出，其余部分制冷剂由第二电子三通调节阀第三端口8c流出；在第二电子三通调节阀第二端口8b流出的制冷剂进入新风预热段换热器第一端口10a，高温高压制冷剂液体进一步冷却过冷，放出热量作为室外低温空气预热热源，将室外较低温度新风预热升温，避免室内回风直接与室外新风混合产生凝结水。第二电子三通调节阀8通过调节进入新风预热段换热器10的制冷剂流量，调节室外低温空气与制冷剂换热量，使低温空气被制冷剂加热至合适的预热温度。过冷后制冷剂液体由新风预热段换热器第二端口10b流出，与第二电子三通调节阀第三端口8c流出的制冷剂混合，进入电子膨胀阀7节流，高温高压的制冷剂液体节流变为低温低压制冷剂液体。低温低压制冷剂液体进入第一电子三通调节阀第三端口4c(第一电磁阀关闭)，之后制冷剂液体由第一电子三通调节阀第一端口4a流出，进入排风热回收段换热器3b第二端口与室内温度较高的排风或者室内排风、室外新风混合空气换热，低温低压制冷剂液体沸腾蒸发变为低温低压制冷剂气体。排风热回收段换热器3中制冷剂与温度较高的室内排风或室内排风、室外新风混合空气换热，增大换热温差，增强了排风热回收段换热器换热效果，提高了热泵机组的运行效率。低温低压制冷剂气体由混合排风热回收段换热器第一端口3a流出，经四通换向阀第二端口2b和第三端口2c回到压缩机第二端口1b，被压缩至高温高压制冷剂气体，进入下一个制冷剂循环。The high-temperature and high-pressure refrigerant gas from the first port 1a of the compressor enters the first port 11a of the heat exchanger in the mixed air treatment section through the first port 2a and the fourth port 2d of the four-way reversing valve, and mixes with the outdoor preheated fresh air and the indoor return air Low-temperature air heat exchange, high-temperature and high-pressure refrigerant gas is condensed to saturated refrigerant liquid, and low-temperature air is heated up. The high-temperature and high-pressure saturated refrigerant liquid flows out from the second port 11b of the heat exchanger in the mixed air treatment section, and enters the first port 8a of the second electronic three-way regulating valve, and part of the refrigerant flows out from the second port 8b of the second electronic three-way regulating valve. The rest of the refrigerant flows out from the third port 8c of the second electronic three-way regulating valve; the refrigerant flowing out of the second port 8b of the second electronic three-way regulating valve enters the first port 10a of the heat exchanger in the fresh air preheating section, and the high-temperature and high-pressure refrigeration The agent liquid is further cooled and supercooled, and the heat released is used as the heat source for preheating the outdoor low-temperature air, which preheats the outdoor fresh air with a lower temperature and prevents the indoor return air from directly mixing with the outdoor fresh air to produce condensed water. The second electronic three-way regulating valve 8 regulates the amount of heat exchange between the outdoor low-temperature air and the refrigerant by regulating the refrigerant flow rate entering the heat exchanger 10 in the fresh air preheating section, so that the low-temperature air is heated by the refrigerant to an appropriate preheating temperature. After supercooling, the refrigerant liquid flows out from the second port 10b of the heat exchanger in the fresh air preheating section, mixes with the refrigerant flowing out from the third port 8c of the second electronic three-way regulating valve, and enters the electronic expansion valve 7 to throttle, high temperature and high pressure refrigeration The throttling of the refrigerant liquid becomes a low-temperature and low-pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid enters the third port 4c of the first electronic three-way regulating valve (the first solenoid valve is closed), and then the refrigerant liquid flows out from the first port 4a of the first electronic three-way regulating valve, and enters the heat recovery section of the exhaust air. The second port of the heater 3b exchanges heat with the exhaust air with higher indoor temperature or the mixed air of indoor exhaust air and outdoor fresh air, and the low-temperature and low-pressure refrigerant liquid boils and evaporates to become a low-temperature and low-pressure refrigerant gas. The refrigerant in the heat exchanger 3 of the exhaust air heat recovery section exchanges heat with the indoor exhaust air with high temperature or the mixed air of indoor exhaust air and outdoor fresh air, which increases the heat exchange temperature difference and enhances the heat exchange of the heat exchanger in the exhaust air heat recovery section The effect is to improve the operating efficiency of the heat pump unit. The low-temperature and low-pressure refrigerant gas flows out of the first port 3a of the heat exchanger in the mixed exhaust heat recovery section, and returns to the second port 1b of the compressor through the second port 2b and third port 2c of the four-way reversing valve, where it is compressed to high temperature and high pressure The refrigerant gas enters the next refrigerant cycle.
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| CN110243034A (en) * | 2019-05-14 | 2019-09-17 | 南京工程学院 | An energy-saving fresh air air-conditioning device based on an energy tower |
| CN110454880A (en) * | 2019-07-08 | 2019-11-15 | 新疆维吾尔自治区建筑设计研究院 | Xeothermic severe cold cold climate area's whole year is with Fresh air handing air-conditioner set and application method |
| CN110345593A (en) * | 2019-08-14 | 2019-10-18 | 中原工学院 | A kind of large space integrated-type unitary air handling unit |
| CN110345593B (en) * | 2019-08-14 | 2024-04-30 | 中原工学院 | Large-space integrated combined air conditioning unit |
| DE102021104762A1 (en) | 2020-02-26 | 2021-08-26 | Helmut Klaus Gerhard Schwieterka | Decentralized device for air conditioning and ventilation of individual interiors and system for air conditioning of interiors |
| DE102020105044B3 (en) * | 2020-02-26 | 2021-03-25 | Helmut Klaus Gerhard Schwieterka | Decentralized device for air conditioning and ventilation of individual interiors and system for air conditioning of interiors |
| CN113108386A (en) * | 2021-04-30 | 2021-07-13 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN113124515A (en) * | 2021-05-25 | 2021-07-16 | 大连民族大学 | Air circulation heat pump air conditioning system and use method |
| CN114353379A (en) * | 2021-12-22 | 2022-04-15 | 天普新能源科技有限公司 | Carbon dioxide heat pump system with lubricating oil waste heat recovery function |
| CN114353379B (en) * | 2021-12-22 | 2025-07-18 | 天普新能源科技有限公司 | Carbon dioxide heat pump system with lubricating oil waste heat recovery function |
| CN119245249A (en) * | 2024-09-12 | 2025-01-03 | 广东同方瑞风节能科技股份有限公司 | A four-element heat recovery air conditioning unit and working method |
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