WO2018045697A1 - 一种基于热泵热回收及双蒸发温度的高效新风除湿机 - Google Patents

一种基于热泵热回收及双蒸发温度的高效新风除湿机 Download PDF

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WO2018045697A1
WO2018045697A1 PCT/CN2017/070386 CN2017070386W WO2018045697A1 WO 2018045697 A1 WO2018045697 A1 WO 2018045697A1 CN 2017070386 W CN2017070386 W CN 2017070386W WO 2018045697 A1 WO2018045697 A1 WO 2018045697A1
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heat recovery
compressor
flow regulating
heat
fresh air
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PCT/CN2017/070386
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English (en)
French (fr)
Inventor
张国华
俞越
曹祥
杨智
张子杨
张春路
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南通华信中央空调有限公司
同济大学
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Publication of WO2018045697A1 publication Critical patent/WO2018045697A1/zh

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • 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
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a fresh air dehumidifier, in particular to an efficient fresh air dehumidifier based on heat pump heat recovery and double evaporation temperature.
  • the indoor air quality is often improved by introducing outdoor fresh air.
  • the outdoor fresh air and high heat (summer) if the fresh air enters the room directly, the indoor cooling load will be increased while increasing the indoor humidity. Therefore, it is generally required to dehumidify the fresh air in advance.
  • the fresh air dehumidifier is responsible for all wet loads and partial heat loads in the room, often in conjunction with indoor sensible heat treatment equipment (such as radiant air conditioning systems).
  • the principle of the traditional fresh air dehumidifier is to reduce the air temperature to dew point dehumidification by evaporator refrigeration, and then reheat the condenser to raise the air temperature to the air supply state, and then into the room. Since the traditional fresh air dehumidification unit has a low evaporation temperature and does not recover the cold/heat in the exhaust air, the conventional fresh air dehumidifier has low energy efficiency and large energy consumption.
  • the object of the present invention is to provide a heat pump heat recovery method, by adding a heat recovery coil, the heat recovery can also reduce the unit condensing pressure, and two compressors are used to generate two different evaporation temperatures, of which The evaporating temperature mainly deals with the fresh air sensible heat load, and the low evaporating temperature mainly deals with the fresh air latent heat load, which significantly reduces the power consumption of the compressor and improves the energy efficiency ratio of the unit to solve the problems raised in the above background art.
  • a high-efficiency fresh air dehumidifier based on heat pump heat recovery and double evaporation temperature including an inner machine and an outer machine, the outer machine including a first compressor, a second compressor, The condenser and the condensing fan, the first compressor and the second compressor are arranged in parallel through the connecting pipe and the condenser, and the condensing fan is disposed outside the condenser.
  • the internal machine includes a heat recovery heat exchanger, a heat recovery flow regulating device, a reheat heat exchanger, a reheat flow regulating device, a condensing flow regulating device, an evaporator, a first throttling device, a second throttling device, and a blower fan.
  • the exhaust fan, the evaporator is a double loop heat exchanger comprising a loop A and a loop B, one end of the loop A is connected to the first compressor, the other end is connected to the first throttling device, and one end of the loop B is connected to the second compressor
  • the other end is connected to the second throttling device, and the first throttling device and the second throttling device are connected in parallel through the connecting pipe to the condensing flow regulating device, the heat recovery flow regulating device and the reheating flow regulating device, respectively, and the heat recovery flow rate
  • the adjusting device is connected to one end of the heat recovery heat exchanger through a connecting pipe, and the other end of the heat recovery heat exchanger is connected with the connecting pipe connecting the first compressor and the second compressor and the condenser, and the heat flow regulating device and the reheat heat exchange One end of the heat exchanger is connected, and the other end of the reheat heat exchanger is connected to a connecting pipe connecting the first compressor and the second compressor and the conden
  • the evaporator is two separate evaporators connected to the first compressor and the second compressor, respectively.
  • the heat recovery heat exchanger, the condenser and the reheater are both air-cooled condensers.
  • the inlet air of the heat recovery heat exchanger is the exhaust of the room.
  • the inlet air state of the reheat heat exchanger is low temperature and low humidity air treated by the evaporator.
  • the throttling area of the first throttling device and the second throttling device are variable, and the variable throttling device is electrically Sub-expansion valve or thermal expansion valve.
  • the condensing flow regulating device, the heat recovery flow regulating device, and the reheating flow regulating device are variable cross-sectional flow regulating devices, which are electronic expansion valves.
  • the exhaust air of the air-conditioned room has a low temperature and humidity, and is a cold source with a certain grade.
  • the heat pump heat recovery method is adopted, and the indoor exhaust air is passed through the heat recovery heat exchanger under the action of the exhaust fan, so that the exhaust air condenses the refrigerant, and then passes through the refrigeration cycle, so that the cooling amount in the exhaust air is transferred to the evaporation.
  • the fresh air is cooled at the device to recover the energy.
  • the use of a heat recovery heat exchanger improves the heat transfer on the condensing side of the refrigeration system and reduces the condensing pressure of the entire system. Under the combined effect of both, the energy efficiency ratio of the fresh air dehumidifier can be effectively improved.
  • the fresh air dehumidifier of the present invention has two independent compressors, so that it can have two different evaporation temperatures, and the fresh air is pre-cooled by the high evaporation temperature section of the evaporator, mainly removing the sensible heat load in the fresh air. Then, the low-evaporation temperature section of the evaporator is used to deeply dehumidify the fresh air after pre-cooling, and the latent heat load of the fresh air is removed, and the heat-humidity load of the fresh air is separately treated, which can effectively improve the energy efficiency ratio of the system.
  • Figure 1 is a schematic view of the structure of the present invention.
  • the present invention provides a technical solution: a high-efficiency fresh air dehumidifier based on heat pump heat recovery and double evaporation temperature, including an inner machine and an outer machine, the outer machine includes a first compressor 1 and a second compression The machine 2, the condenser 3, and the condensing fan 12, the first compressor 1 and the second compressor 2 are disposed in parallel with each other through the connecting pipe 15 and the condenser 3, and the condensing fan 12 is disposed outside the condenser 3.
  • the internal machine includes a heat recovery heat exchanger 4, a heat recovery flow regulating device 8, a reheat heat exchanger 5, a reheat flow regulating device 9, a condensing flow regulating device 7, an evaporator 6, a first throttling device 10, and a second
  • the throttle device 11, the blower fan 13 and the exhaust fan 14, the evaporator 6 is a double loop heat exchanger comprising a loop A 6a and a loop B 6b, one end of the loop A 6a is connected to the first compressor 1, and the other end is first
  • the throttling device 10 is turned on, one end of the circuit B 6b is connected to the second compressor 2, and the other end is connected to the second throttling device 11, and the first throttling device 10 and the second throttling device 11 are arranged in parallel through the connecting pipe 15 respectively.
  • the heat recovery flow regulating device 8 is connected to one end of the heat recovery heat exchanger 4 through the connecting pipe 15, and the other end of the heat recovery heat exchanger 4 Connected to the connecting pipe 15 connected to the first compressor 1 and the second compressor 2 and the condenser 3, the reheat flow regulating device 9 is connected to one end of the reheat heat exchanger 5, and the other end of the reheating heat exchanger 5 is first
  • the compressor 1 and the second compressor 2 are connected to a connecting pipe 15 connected to the condenser 3
  • Condensate flow regulating device 7 is turned on with the condenser 3.
  • the compressor can be selected from two separate compressors, or one compressor with two independent chambers connected in parallel, such as a rolling rotor and a piston compressor.
  • the heat recovery heat exchanger 4, the reheat heat exchanger 5, and the condenser 3 are both air-cooled condensers, which are respectively passed during operation. Indoor exhaust, low temperature and low humidity air treated by evaporator, outdoor air.
  • the throttle area of the first throttle device 10 and the second throttle device 11 is variable, that is, the variable section throttle device is selected from an electronic expansion valve or a thermal expansion valve.
  • the first throttle device 10 and the second throttle device 11 are both electronic expansion valves.
  • the condensing flow rate adjusting device 7, the heat recovery flow rate adjusting device 8, and the reheating flow rate adjusting device 9 are variable cross-sectional flow rate adjusting devices, and in this embodiment, all are electronic expansion valves.
  • the refrigerant is compressed by the first compressor 1 and the second compressor 2 to become high-temperature and high-pressure steam, and enters the condenser 3 through the connecting pipe 15, respectively, and the heat is recovered.
  • Heater 4 when the indoor exhaust air passes through the heat recovery heat exchanger, the sensible heat in the exhaust air can be effectively recovered, thereby improving the energy efficiency ratio of the unit, and the reheat heat exchanger 5 condenses and releases heat, wherein the proportion of the flow is distributed by the condensation flow
  • the adjusting device 7, the heat recovery flow regulating device 8, and the opening degree of the reheating flow adjusting device 9 determine that the condensed refrigerant merges in front of the throttle device through the connecting pipe 15, and then the refrigerant is divided into two parts, and a part of the refrigerant is connected
  • the agent passes through the connecting pipe 15, the second throttling device 11, enters the second half of the evaporator 6, evaporates and absorbs heat, dehumid
  • the control strategy is that the rotational speeds of the first compressor 1 and the second compressor 2 should be adjusted according to the cooling load of the evaporator 6, and the opening degree of the first throttle device 10 should ensure the intake superheat of the first compressor 1,
  • the opening of the two throttle device 11 should ensure the suction superheat of the suction port of the second compressor 2.
  • the opening of the reheat flow regulating device should depend on the supply air temperature after reheating.
  • the above embodiments are not limited to the single cooling system, and the heat pump system uses the technical solution of the present invention to improve the cooling performance under refrigeration conditions, and is within the protection scope of the present invention.
  • the exhaust air of the air-conditioned room has a low temperature and humidity, and is a cold source with a certain grade.
  • the heat pump heat recovery method is adopted, and the indoor exhaust air is passed through the heat recovery heat exchanger under the action of the exhaust fan, so that the exhaust air condenses the refrigerant, and then passes through the refrigeration cycle, so that the cooling amount in the exhaust air is transferred to the evaporation.
  • the fresh air is cooled at the device to recover the energy.
  • the use of a heat recovery heat exchanger improves the heat transfer on the condensing side of the refrigeration system and reduces the condensing pressure of the entire system. Under the combined effect of both, the energy efficiency ratio of the fresh air dehumidifier can be effectively improved.

Abstract

一种基于热泵热回收及双蒸发温度的新风除湿机，包括内机与外机两部分，采用热泵热回收的方式，在排风风机的作用下使室内排风通过热回收换热器（4），让排风冷凝制冷剂，再通过制冷循环，使排风中的冷量转移至蒸发器（6）处冷却新风，从而达到回收能量的作用。

Description

一种基于热泵热回收及双蒸发温度的高效新风除湿机 技术领域
本发明涉及一种新风除湿机，尤具是涉及一种基于热泵热回收及双蒸发温度的高效新风除湿机。
背景技术
在建筑物的空调系统中，常通过引入室外新风的方式来改善室内空气品质，但由于室外新风潮湿高热(夏季)，新风若直接进入室内，在增加室内湿度的同时也会增加室内制冷负荷，因此一般要求预先对新风进行除湿。
新风除湿机承担室内所有的湿负荷和部分热负荷，常与室内显热处理设备(如辐射空调系统)相配合。传统的新风除湿机的原理是通过蒸发器制冷降低空气温度至露点除湿，然后通过冷凝器再热使空气温度上升至送风状态，然后送入室内。由于传统新风除湿机组的蒸发温度很低，且没有回收排风中的冷/热量，因此传统新风除湿机能效低，耗能巨大。
发明内容
本发明的目的在于提供一种采用热泵热回收的方式，通过增加一个热回收盘管，在回收热量的同时也可以降低机组冷凝压力，且利用两台压缩机产生两个不同蒸发温度，其中高蒸发温度处主要处理新风显热负荷，低蒸发温度处主要处理新风潜热负荷，显著降低压缩机功耗，提升机组能效比，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：一种基于热泵热回收及双蒸发温度的高效新风除湿机，包括内机与外机两部分，外机包括第一压缩机、第二压缩机、冷凝器及冷凝风机，第一压缩机、第二压缩机并行设置通过连接管与冷凝器相互导通，冷凝风机设置在冷凝器外侧。
内机包括热回收换热器、热回收流量调节装置、再热换热器、再热流量调节装置、冷凝流量调节装置、蒸发器、第一节流装置、第二节流装置、送风风机及排风风机，蒸发器为双回路换热器包括回路A和回路B，回路A一端与第一压缩机相连，另一端与第一节流装置导通，回路B一端与第二压缩机相连，另一端与第二节流装置相连，第一节流装置及第二节流装置并行设置通过连接管分别与冷凝流量调节装置、热回收流量调节装置及再热流量调节装置相连，热回收流量调节装置通过连接管与热回收换热器一端连接，热回收换热器另一端与第一压缩机及第二压缩机与冷凝器连接的连接管相连，再热流量调节装置与再热换热器一端相连，再热换热器另一端与第一压缩机及第二压缩机与冷凝器连接的连接管相连，冷凝流量调节装置与所述冷凝器导通。
优选的，蒸发器为两个单独的蒸发器，分别与第一压缩机和第二压缩机相连。
优选的，热回收换热器，冷凝器，再热器均为风冷型冷凝器。
优选的，热回收换热器的进口空气为房间的排风。
优选的，再热换热器的进口空气状态为经蒸发器处理后的低温低湿空气。
优选的，第一节流装置与第二节流装置的节流面积可变，为变截面节流装置，为电 子膨胀阀或热力膨胀阀。
优选的，冷凝流量调节装置，热回收流量调节装置，再热流量调节装置为变截面流量调节装置，为电子膨胀阀。
与现有技术相比，本发明的有益效果是：
(1)空调房间的排风与室外的空气相比，其温度与湿度均较低，是具有一定品位的冷源。本发明中采用热泵热回收的方式，在排风风机的作用下使室内排风通过热回收换热器，让排风冷凝制冷剂，再通过制冷循环，使排风中的冷量转移至蒸发器处冷却新风，从而达到回收能量的作用。另一方面，由于使用了热回收换热器，改善了制冷系统冷凝侧的换热，降低了整个系统的冷凝压力。两者综合作用下，可以有效提高新风除湿机的能效比。
(2)本发明的新风除湿机具有两个独立的压缩机，从而可以具有两个不同的蒸发温度，利用蒸发器的高蒸发温度段对新风进行预冷，主要除掉新风中的显热负荷，再利用蒸发器的低蒸发温度段对预冷后的新风进行深度除湿，除掉新风的潜热负荷，将新风的热湿负荷分开处理，可以有效提高系统能效比。
附图说明
图1为本发明结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，本发明提供一种技术方案：一种基于热泵热回收及双蒸发温度的高效新风除湿机，包括内机与外机两部分，外机包括第一压缩机1、第二压缩机2、冷凝器3及冷凝风机12，第一压缩机1、第二压缩机2并行设置通过连接管15与冷凝器3相互导通，冷凝风机12设置在冷凝器3外侧。
内机包括热回收换热器4、热回收流量调节装置8、再热换热器5、再热流量调节装置9、冷凝流量调节装置7、蒸发器6、第一节流装置10、第二节流装置11、送风风机13及排风风机14，蒸发器6为双回路换热器包括回路A 6a和回路B 6b，回路A 6a一端与第一压缩机1相连，另一端与第一节流装置10导通，回路B 6b一端与第二压缩机2相连，另一端与第二节流装置11相连，第一节流装置10及第二节流装置11并行设置通过连接管15分别与冷凝流量调节装置7、热回收流量调节装置8及再热流量调节装置9相连，热回收流量调节装置8通过连接管15与热回收换热器4一端连接，热回收换热器4另一端与第一压缩机1及第二压缩机2与冷凝器3连接的连接管15相连，再热流量调节装置9与再热换热器5一端相连，再热换热器5另一端与第一压缩机1及第二压缩机2与冷凝器3连接的连接管15相连，冷凝流量调节装置7与所述冷凝器3导通。
压缩机可以选择两个独立的压缩机，也可以选择一个并联了两个独立腔体的压缩机，如滚动转子和活塞压缩机，。
热回收换热器4，再热换热器5，冷凝器3均为风冷型冷凝器，工作时分别通过的是 室内的排风，经蒸发器处理后的低温低湿空气，室外空气。
第一节流装置10与第二节流装置11的节流面积可变，即为变截面节流装置，选自电子膨胀阀或热力膨胀阀。本实施例中，第一节流装置10与第二节流装置11均为电子膨胀阀。
冷凝流量调节装置7，热回收流量调节装置8，再热流量调节装置9为变截面流量调节装置，本实施例中，均为电子膨胀阀。
基于热泵热回收及双蒸发温度的高效新风除湿机工作时，制冷剂通过第一压缩机1和第二压缩机2压缩后成为高温高压蒸汽，经连接管15分别进入冷凝器3，热回收换热器4，室内的排风通过热回收换热器时，可以有效回收排风中的显热，从而提高机组能效比，再热换热器5冷凝放热，其中流量的比例分配由冷凝流量调节装置7，热回收流量调节装置8，再热流量调节装置9的开度决定，被冷凝的制冷剂通过连接管15汇合在节流装置前，然后制冷剂被分为两部分，一部分经连接管15，第一节流装置10，进入蒸发器6前半部分，蒸发吸热，预冷新风，主要除掉新风的显热负荷，再经连接管15，返回第一压缩机1；另一部分制冷剂经连接管15，第二节流装置11，进入蒸发器6后半部分，蒸发吸热，对预冷后的新风深度除湿，主要除掉新风的潜热负荷，再经连接管15，返回第二压缩机2，完成整个制冷循环。
控制策略为，第一压缩机1和第二压缩机2的转速应根据蒸发器6的冷负荷进行调节，第一节流装置10的开度应保证第一压缩机1吸气过热度，第二节流装置11的开度应保证第二压缩机2吸气口的吸气过热度。再热流量调节装置的开度应该取决于再热后的送风温度。
上述实施例中未完整展示制冷剂循环的所有部件，实施过程中，在制冷剂回路设置四通换向阀、储液器、气液分离器、油分离、过滤器、干燥器等常见制冷辅件，均不能视为对本发明进行了实质性改进，应属于本发明保护范围。
上述实施例并不限于单冷系统，热泵系统在制冷工况下使用本发明的技术方案提高制冷性能，应属于本发明保护范围。
空调房间的排风与室外的空气相比，其0温度与湿度均较低，是具有一定品位的冷源。本发明中采用热泵热回收的方式，在排风风机的作用下使室内排风通过热回收换热器，让排风冷凝制冷剂，再通过制冷循环，使排风中的冷量转移至蒸发器处冷却新风，从而达到回收能量的作用。另一方面，由于使用了热回收换热器，改善了制冷系统冷凝侧的换热，降低了整个系统的冷凝压力。两者综合作用下，可以有效提高新风除湿机的能效比。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (7)

  1. 一种基于热泵热回收及双蒸发温度的高效新风除湿机，包括内机与外机两部分，其特征在于：所述外机包括第一压缩机、第二压缩机、冷凝器及冷凝风机，所述第一压缩机、第二压缩机并行设置通过连接管与冷凝器相互导通，所述冷凝风机设置在冷凝器外侧；
    所述内机包括热回收换热器、热回收流量调节装置、再热换热器、再热流量调节装置、冷凝流量调节装置、蒸发器、第一节流装置、第二节流装置、送风风机及排风风机，所述蒸发器为双回路换热器包括回路A和回路B，所述回路A一端与第一压缩机相连，另一端与第一节流装置导通，所述回路B一端与第二压缩机相连，另一端与第二节流装置相连，所述第一节流装置及第二节流装置并行设置通过连接管分别与冷凝流量调节装置、热回收流量调节装置及再热流量调节装置相连，所述热回收流量调节装置通过连接管与热回收换热器一端连接，热回收换热器另一端与第一压缩机及第二压缩机与冷凝器连接的连接管相连，所述再热流量调节装置与所述再热换热器一端相连，再热换热器兄一端与第一压缩机及第二压缩机与冷凝器连接的连接管相连，所述冷凝流量调节装置与所述冷凝器导通。
  2. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述蒸发器为两个单独的蒸发器，分别与第一压缩机和第二压缩机相连。
  3. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述热回收换热器，冷凝器，再热器均为风冷型冷凝器。
  4. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述热回收换热器的进口空气为房间的排风。
  5. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述再热换热器的进口空气状态为经蒸发器处理后的低温低湿空气。
  6. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述第一节流装置与第二节流装置的节流面积可变，为变截面节流装置，为电子膨胀阀或热力膨胀阀。
  7. 根据权利要求1所述的一种基于热泵热回收及双蒸发温度的高效新风除湿机，其特征在于：所述冷凝流量调节装置，热回收流量调节装置，再热流量调节装置为变截面流量调节装置，为电子膨胀阀。
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