WO2019214605A1 - 水源热泵 - Google Patents

水源热泵 Download PDF

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WO2019214605A1
WO2019214605A1 PCT/CN2019/085827 CN2019085827W WO2019214605A1 WO 2019214605 A1 WO2019214605 A1 WO 2019214605A1 CN 2019085827 W CN2019085827 W CN 2019085827W WO 2019214605 A1 WO2019214605 A1 WO 2019214605A1
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evaporator
refrigerant
water source
heat pump
water
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PCT/CN2019/085827
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English (en)
French (fr)
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王全龄
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Wang Quanling
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Priority to EP19800362.6A priority Critical patent/EP3816540A4/en
Priority to JP2021512989A priority patent/JP7238102B2/ja
Publication of WO2019214605A1 publication Critical patent/WO2019214605A1/zh

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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
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • 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
    • F25B25/00Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0052Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
    • 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
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/02Details of evaporators
    • F25B2339/024Evaporators with refrigerant in a vessel in which is situated a heat exchanger
    • F25B2339/0242Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
    • 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
    • F25B2600/00Control issues
    • F25B2600/13Pump speed control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071Evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006Preventing deposits of ice
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

一种水源热泵,该水源热泵包括无折流板式蒸发器(10),无折流板式蒸发器(10)设置为通入水温度不小于1℃且不大于5℃的冷媒水,冷媒水为江、河、湖或海水,无折流板式蒸发器(10)包括蒸发器壳体(1)、蒸发换热管(2)、载冷剂入口(3)、载冷剂出口(4)、制冷剂入口(5)以及制冷剂蒸汽出口(6)。

Description

水源热泵
本申请要求申请日为2018年5月7日、申请号为201810426364.4的中国专利申请的优先权,该申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及技术领域,例如涉及一种水源热泵。
背景技术
冬季在寒冷的北方,气温虽然低至零下30℃左右,但是江、河、湖或海水的温度依然高于0℃,一般最低都在2℃以上,在此情况下,江、河、湖或海水是水源热泵较好的热源。江、河、湖或海水蕰藏着巨大的低温热能,如果利用江、河、湖或海水作为水源热泵的再生能源采暖供热,是制冷领域的重大技术突破,对节约化石能源意义巨大,是可再生能源领域对人类的又一重大贡献。
相关技术,瑞典在海水水源热泵应用方面走在世界前列,但要提取深海中水温不小于7℃的海水,否则不能正常运行。我国大连、山东(黄岛)等诸多地区曾也有过海水水源热泵的应用,但都以失败告终。究其原因,都因冬季寒冷时段海水温度低于7℃,导致水源热泵无法可靠安全运行,这就是海水水源热泵未能广泛推广应用的原因。因此,研发1-7℃低温水源热泵乃是国内外制冷领域的前沿科技。
经长期研究发现,相关技术生产制造的水源热泵机组,水源热泵机组的蒸发器都是按冷媒水不小于5℃设计生产制造的,且冷媒水≤2℃机内防冻结保护停机。也就是说,相关技术水源热泵所使用的常规蒸发器不能在≤5℃的水源下正常工作运行。众所周知,相关技术壳管式蒸发器为了提高蒸发器的换热效率,均在冷媒水侧设置折流板,冷媒水在折流板的作用下绕折流板设计的水道流动,目的是为了节省水流量,降低水泵的功率。绕流还促使冷媒水充分与换热管换热,提高换热效率。上述技术应用在温度不小于7℃的制冷空调冷媒水的蒸发器上,是非常理想的技术措施和结构。然而,针对小于5℃,特别是1-3℃左右的冷媒水就不适用了,且成为水温不大于5℃的海水水源热泵失败的元凶。因为,冬季最寒冷时段的江、河、湖或海水温大都在1-3℃左右,特别是海边的海水温度在1-2℃左右,如此低的冷媒水经折流板多次绕流后,导致冷媒水在换热管表 面冻结,丧失换热能力。因此,这是相关技术蒸发器不能运行在温度不大于5℃的冷媒水中的关键所在,这也是瑞典采用常规蒸发器制造的水源热泵,必须将取水点管道修建几十公里以外深海处,提取水温不小于7℃海水的原因。然而,将取水点管道修建几十公里以外深海处,为了抵御海面大风大浪和管道的安全性,修建这样的管道造价昂贵,因此,相关技术的海水水源热泵没有广泛推广应用价值。为了降低海水水源热泵取水管道系统的投资,必须在海边浅水处设置取水点,冬季严寒气温时提取海边浅滩1-3℃的海水,为水源热泵供应热源水确保水源热泵可靠、稳定运行。
发明内容
本公开提供了一种水源热泵,能够解决相关技术中流入的冷媒水温度小于5℃时,水源热泵的蒸发器无法正常工作的问题。
一实施例提供了一种水源热泵,包括无折流板式蒸发器,所述无折流板式蒸发器设置为通入水温度不小于1℃且不大于5℃的冷媒水,所述冷媒水为江、河、湖或海水。
附图说明
图1是一实施例中由无折流板壳管式蒸发器构成的一种水源热泵示意图;
图2是一实施例中由无折流板U形管式蒸发器构成的一种水源热泵示意图;
图3是一实施例中由无折流板立管满液式蒸发器构成的一种水源热泵示意图;
图4是一实施例中由无折流板卧式满液式蒸发器构成的一种水源热泵示意图;
图5是一实施例中由无折流板淋降式蒸发器构成的一种水源热泵示意图;
图6是一实施例中由无折流板盘管式蒸发器构成的一种水源热泵示意图;
图7是一实施例中由无折流板式蒸发器构成的一种水源热泵结构示意图。
图中:
1、蒸发器壳体;2、蒸发换热管;3、载冷剂入口;4、载冷剂出口;5、制冷剂入口;6、制冷剂蒸汽出口;7、制冷剂喷淋装置;8、载冷剂喷淋装置;9、变频载冷剂循环泵;10、无折流板式蒸发器;11、制冷压缩机;12、冷凝器; 13、膨胀阀;14、水源输入端;15、水源输出端;16、热泵输入端;17、热泵输出端。
具体实施方式
本实施例提供适用于江、河、湖或海水中的水源热泵,该水源热泵的蒸发器去掉了相关技术中的蒸发器上的折流板;并且为防止冷媒水在极低水温时易在换热管表面冻结,进一步将冷媒水换热路途设计的尽量短,以缩短水流在换热管表面的停留时间,为保证蒸发器的换热效率;同时合理提高冷媒水的流速,减小冷媒水进、出时的水温差,可以使蒸发器冷媒水在1-5℃范围正常运行。
如图1所示,本实施例提供了一种由无折流板壳管式蒸发器构成的水源热泵,适用于江、河、湖或海水水源中。无折流板壳管式蒸发器由蒸发器壳体1、蒸发换热管2、载冷剂入口3、载冷剂出口4、制冷剂入口5及制冷剂蒸汽出口6构成。在本实施例中,无折流板壳管式蒸发器由于没有配置折流板,因此,冷媒水经载冷剂入口3进入后,直接快速流过并与蒸发换热管2换热,且水尚未冻结前,过冷的冷媒水由载冷剂出口4迅速流回水源中。为了进一步增加水在蒸发器内的流速和均衡性,载冷剂入口3可以配置多个,确保冷媒水能够均匀通过蒸发换热管2进行换热并不至于发生冻结现象。其中,本实施例中的冷媒水为江、河、湖或海水,以下不再赘述。
如图2所示,一实施例提供了一种由无折流板U形管式蒸发器构成水源热泵示意图。本实施例中,蒸发换热管2配置U形管式换热管,其他结构与附图1所示的方案一致。
如图3所示,一实施例提供了一种由无折流板立管满液式蒸发器构成的江、河、湖或海水水源热泵示意图。在本实施例中,蒸发器壳体1立式安装,蒸发换热管2采用竖直翅片管式蒸发换热管。工作时经制冷剂入口5供入制冷剂,竖直翅片管式蒸发换热管充满制冷剂,且竖直翅片管式蒸发换热管全部浸泡在载冷剂中,因此,换热效率较高。冷媒水经载冷剂入口3输入,由载冷剂出口4流回水源中。该实施例除为立管满液式蒸发器外,其他结构与附图1所示的方案一致。
如图4所示,一实施例提供了一种由无折流板满液式蒸发器构成的水源热泵示意图。本实施例所配置的蒸发器是卧式满液蒸发器。制冷剂经制冷剂入口5供液,制冷剂气体由制冷剂蒸汽出口6引出,运行时,蒸发换热管2浸泡在制冷剂中。载冷剂由载冷剂入口3进入经蒸发换热管2的管内流过并与管外制冷剂换热 后,由载冷剂出口4流出。其他结构与附图1所示的方案一致。
如图5所示,一实施例提供了一种由无折流板淋降式蒸发器构成的水源热泵示意图。本实施例,配置淋降式制冷剂循环装置,制冷剂经上面制冷剂入口5供液,制冷剂由制冷剂喷淋装置7喷出,均匀的喷淋在蒸发换热管2表面换热,蒸汽由下面制冷剂蒸汽出口6引出。该无折流板淋降式蒸发器构成的水源热泵的优点是较附图4所示的满液式蒸发器节省制冷剂用量。其他结构与附图4所示方案一致。
如图6所示,一实施例提供了一种由无折流板盘管式蒸发器构成的水源热泵示意图。本实施例配置盘管式壳管蒸发器,为了防止江、河、湖或海水在盘管表面冻结,本实施例采用多个载冷剂喷淋装置8,多个载冷剂喷淋装置8分层且分散式排布,构成分层分散式载冷剂喷淋装置,确保江、河、湖或海水不至于在盘管表面冻结。运行时制冷剂经制冷剂入口5供液,蒸汽由下面制冷剂蒸汽出口6引出。冷媒水经载冷剂入口3输入,由载冷剂出口4流回至水源中。其他结构与附图1所示方案一致,不再重复介绍。
如图7所示,一实施例提供了一种由无折流板式蒸发器10构成的水源热泵结构示意图。本实施例的水源热泵由变频载冷剂循环泵9、无折流板式蒸发器10、制冷压缩机11、冷凝器12、膨胀阀13、水源输入端14、水源输出端15、热泵输入端16及热泵输出端17构成,所述制冷压缩机11包括吸气端和排气端。所述载冷剂入口3通过所述变频载冷剂循环泵9与所述水源输入端14连接,所述载冷剂出口4与所述水源输出端15连接,所述制冷压缩机11的吸气端与制冷剂蒸汽出口6连接,所述制冷压缩机11的排气端设置为与所述冷凝器12制冷剂侧的第一端相连接,所述膨胀阀13的第一端设置为与所述制冷剂入口5连接,所述膨胀阀13的第二端与所述冷凝器12制冷剂侧的第二端相连接,所述冷凝器12水侧设有所述热泵输入端15和所述热泵输出端17。运行时,冷媒水由水源输入端14输入,经变频载冷剂循环泵9通过无折流板式蒸发器10水侧循环由水源输出端15流回水源中。流经无折流板式蒸发器10水侧循环的冷媒水,在无折流板式蒸发器10制冷剂侧进行循环的制冷剂的作用下吸热蒸发成气体,蒸汽并由制冷压缩机11的吸气端吸入并压缩成高温高压气体,高温高压气体由压缩机11的排出端排出后,经冷凝器12制冷剂侧向由热泵输入端16及热泵输出端17循环的采暖水冷凝放热,采暖水被压缩加热后通过采暖末端系统采暖供热。高温高压气体经冷凝放热后,形成液体制冷剂并通过膨胀阀13节流后,再次进入无折流板式蒸发器10制冷剂 侧,继续吸收无折流板式蒸发器10水侧循环水源中的热量,制冷剂蒸发为蒸汽后,再次被制冷压缩机11压缩,重复上述制冷压缩循环,由冷凝热加热采暖水后运行采暖供热。
本实施例,除了配置无折流板式蒸发器10防止江、河、湖或海水冻结,还配置了变频载冷剂循环泵9,根据江、河、湖或海水在蒸发器进、出时的水温差和变频载冷剂循环泵9的频率,控制循环水的流量和温差,进一步防止江、河、湖或海水在蒸发换热管2表面发生冻结。
本实施例采用该蒸发器制造出的水源热泵,可以确保水源热泵在世界绝大部分地区的江、河、湖或海水中稳定、可靠及安全地运行,为人类利用江、河、湖或海水再生能源采暖供热成为现实,具有重大的能源和社会意义。

Claims (10)

  1. 一种水源热泵,包括无折流板式蒸发器(10),所述无折流板式蒸发器(10)设置为通入温度不小于1℃且不大于5℃的冷媒水,所述冷媒水为江、河、湖或海水。
  2. 根据权利要求1所述的水源热泵,所述无折流板式蒸发器(10)包括蒸发器壳体(1)、蒸发换热管(2)、载冷剂入口(3)、载冷剂出口(4)、制冷剂入口(5)以及制冷剂蒸汽出口(6)。
  3. 根据权利要求2所述的水源热泵,其中,所述载冷剂入口(3)以及所述载冷剂出口(4)的数量均至少为一个,所述无折流板式蒸发器(10)为无折流板壳管式蒸发器。
  4. 根据权利要求2所述的水源热泵,其中,所述蒸发换热管(2)呈U形,所述无折流板式蒸发器(10)为无折流板U形管式蒸发器。
  5. 根据权利要求2所述的水源热泵,其中,所述无折流板式蒸发器(10)为无折流板立管满液式蒸发器。
  6. 根据权利要求2所述的水源热泵,其中,述无折流板式蒸发器(10)为无折流板卧式满液式蒸发器。
  7. 根据权利要求2所述的水源热泵,其中,所述无折流板式蒸发器(10)为无折流板淋降式蒸发器。
  8. 根据权利要求2所述的水源热泵,其中,所述蒸发换热管(2)包括至少一组蒸发换热盘管,所述无折流板式蒸发器(10)为无折流板盘管式蒸发器。
  9. 根据权利要求2-8任一项所述的水源热泵,还包括变频载冷剂循环泵(9),所述无折流板式蒸发器(10)包括水源输入端(14),所述变频载冷剂循环泵(9)的第一端与所述载冷剂入口(3)连接,所述变频载冷剂循环泵(9)的第二端与所述水源输入端(14)连接。
  10. 根据权利要求2所述的水源热泵,还包括制冷压缩机(11)、冷凝器(12)、膨胀阀(13)以及变频载冷剂循环泵(9),所述制冷压缩机(11)包括吸气端和排气端,所述冷凝器(12)包括制冷剂侧和水侧,所述无折流板式蒸发器(10)包括水源输入端(14)和水源输出端(15);
    所述载冷剂入口(3)设置为通过所述变频载冷剂循环泵(9)与所述水源输入端(14)连接,所述载冷剂出口(4)与所述水源输出端(15)连接,所述制冷压缩机(11)的吸气端设置为与制冷剂蒸汽出口(6)连接,所述制冷压缩机(11)的排气端设置为与所述冷凝器(12)制冷剂侧的第一端相连接,所述 膨胀阀(13)的第一端设置为与所述制冷剂入口(5)连接,所述膨胀阀(13)的第二端与所述冷凝器(12)的制冷剂侧的第二端相连接,所述冷凝器(12)的水侧设有热泵输入端(16)和热泵输出端(17)。
PCT/CN2019/085827 2018-05-07 2019-05-07 水源热泵 WO2019214605A1 (zh)

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