CN105299944B - 一种满液式中央空调系统 - Google Patents
一种满液式中央空调系统 Download PDFInfo
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- F25B6/00—Compression machines, plants or systems, with several condenser circuits
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- F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
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- F25B2341/0016—Ejectors for creating an oil recirculation
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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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
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
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- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
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- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
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Abstract
本发明提供一种满液式中央空调系统,其包括压缩机、冷凝器、外置油分离器、低压循环桶和螺旋蒸发器,所述压缩机的制冷剂出口连接外置油分离器的制冷剂进口,所述油分离器的制冷剂出口连接冷凝器的进口,所述冷凝器的出口连接低压循环桶的制冷剂进口,所述低压循环桶的制冷剂出口连接螺旋蒸发器的制冷剂进口,所述螺旋蒸发器的制冷剂出口与低压循环桶的进气口连接,所述低压循环桶的出气口与压缩机的制冷剂进口连接。本发明满液式中央空调系统吸收了氨制冷节能、制冷效果好及氟利昂安全方便的特点,大大提升了以氟利昂作为制冷剂系统的制冷效率,综合能效比得到明显提升,能耗大幅降低,从而使本发明中央空调系统具有极强的市场竞争力。
Description
技术领域
本发明涉及中央空调技术领域,尤其涉及一种满液式中央空调系统。
背景技术
目前制冷行业中按制冷剂分主要有氟利昂制冷和氨制冷两种,氨相对于氟利昂其制冷效果好,制冷节能,但氟利昂具有安全可靠、方便的特点。由于两种制冷剂所用的空调系统设置不同,无法进行通用,因此,现有的中央空调系统无法同时实现节能和安全两种效果。
因此,现有技术还有待于进一步改进。
发明内容
鉴于现有技术的不足,本发明在于提供一种满液式中央空调系统,旨在解决现有中央空调系统无法同时兼顾节能和安全两种效果的问题。
本发明的技术方案如下:
一种满液式中央空调系统,其中,包括压缩机、冷凝器、外置油分离器、低压循环桶和螺旋蒸发器,所述压缩机的制冷剂出口连接外置油分离器的制冷剂进口,所述外置油分离器的制冷剂出口连接冷凝器的进口,所述冷凝器的出口连接低压循环桶的制冷剂进口,所述低压循环桶的制冷剂出口连接螺旋蒸发器的制冷剂进口,所述螺旋蒸发器的制冷剂出口与低压循环桶的进气口连接,所述低压循环桶的出气口与压缩机的制冷剂进口连接;压缩机压缩后的制冷剂气体经外置油分离器分离后进入到冷凝器冷凝,冷凝后制冷剂进入到低压循环桶并进一步流入螺旋蒸发器中吸热,吸热后的制冷剂从螺旋蒸发器中经进气口回到低压循环桶内,低压循环桶内的制冷器气体通过出气口进入压缩机中形成下一个制冷循环。
所述的满液式中央空调系统,其中,所述制冷剂为氟利昂。
所述的满液式中央空调系统,其中,所述低压循环桶设置位置高于螺旋蒸发器设置位置,使低压循环桶内的制冷剂经制冷剂出口在重力作用下进入螺旋蒸发器。
所述的满液式中央空调系统,其中,所述低压循环桶与螺旋蒸发器的高度差为1.2-2.1米。
所述的满液式中央空调系统,其中,所述满液式中央空调系统还包括用于储存机油的机油储罐,所述外置油分离器上的机油出口与机油储罐的进口连接,所述机油储罐的机油出口与压缩机上的机油入口连接。
所述的满液式中央空调系统,其中,所述满液式中央空调系统还包括用于储存制冷剂的储液罐,所述储液罐的进口与冷凝器的出口连接,所述储液罐的出口与低压循环桶的制冷剂进口连接。
所述的满液式中央空调系统,其中,所述冷凝器包括依次设置的高温冷凝器和低温冷凝器,通过外置油分离器制冷剂出口的制冷剂依次经过高温冷凝器和低温冷凝器的冷凝后进入储液罐中。
所述的满液式中央空调系统,其中,所述螺旋蒸发器包括设置有制冷剂进口的输入管和设置有制冷剂出口的输出管,所述输入管和输出管之间并排设置有螺旋排管,螺旋排管两端分别与输入管和输出管相连通,其中,所述输入管内设置有一用于分离制冷剂和机油的隔离板,所述隔离板沿输入管管径分布从而将输入管内部分割成相连通的上下空间。
所述的满液式中央空调系统,其中,所述输入管上设置有回油管路并通过回油管路连接至压缩机,所述回油管路上设置有引射泵,所述输入管内沉积的机油通过引射泵沿回油管路进入压缩机。
所述的满液式中央空调系统,其中,所述压缩机设置为多台,各台压缩机的循环回路并联。
有益效果:本发明提供一种满液式中央空调系统,该系统吸收了氨制冷节能、制冷效果好以及氟利昂安全方便的特点,大大提升了以氟利昂作为制冷剂系统的制冷效率,综合能效比得到明显提升,能耗大幅降低,从而使本发明的中央空调系统具有极强的市场竞争力。
附图说明
图1为本发明具体实施例中满液式中央空调系统的架构示意图。
图2为本发明具体实施例中螺旋蒸发器的结构示意图。
具体实施方式
本发明提供一种满液式中央空调系统,为使本发明的目的、技术方案及效果更加清楚、明确,以下对本发明进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
如图1所示的一种满液式中央空调系统,其中,包括压缩机100、冷凝器、外置油分离器300、低压循环桶400和螺旋蒸发器500,所述压缩机100的制冷剂出口连接外置油分离器300的制冷剂进口,所述油分离器300的制冷剂出口连接冷凝器200的进口,所述冷凝器200的出口连接低压循环桶400的制冷剂进口,所述低压循环桶400的制冷剂出口连接螺旋蒸发器500的制冷剂进口,所述螺旋蒸发器500的制冷剂出口与低压循环桶400的进气口连接,所述低压循环桶400的出气口与压缩机100的制冷剂进口连接;压缩机压缩后的制冷剂气体经外置油分离器分离后进入到冷凝器冷凝,冷凝后制冷剂进入到低压循环桶并进一步流入螺旋蒸发器中吸热,吸热后的制冷剂从螺旋蒸发器中经进气口回到低压循环桶内,低压循环桶内的制冷器气体通过出气口进入压缩机中形成下一个制冷循环。
具体地,所述满液式中央空调系统还包括用于储存机油的机油储罐600,所述外置油分离器上的机油出口与机油储罐的进口连接,所述机油储罐的机油出口与压缩机上的机油入口连接。另外所述满液式中央空调系统还包括用于用于储存制冷剂的储液罐700,所述储液罐的进口与冷凝器的出口连接,所述储液罐的出口与低压循环桶的制冷剂进口连接。所述冷凝器包括依次设置的高温冷凝器210和低温冷凝器220,通过外置油分离器制冷剂出口的制冷剂依次经过高温冷凝器和低温冷凝器的冷凝后进入储液罐中。外置油分离器能够将经压缩机之后的混合油气进行分离,并将分离后的机油回流至机油储罐中供压缩机使用,而分离出的制冷剂气体则依次进入高温冷凝器和低温冷凝器进行冷凝降温,所述高温冷凝器和低温冷凝器通过冷却水冷凝器(未标出)降温,经过冷凝器后的制冷剂进入储液罐中储存,并可随时通入到低压循环桶中参与制冷循环。
其中,本发明的中央空调系统所用制冷剂为氟利昂。并且,所述低压循环桶设置位置高于螺旋蒸发器设置位置,使低压循环桶内的制冷剂经制冷剂出口在重力作用下进入螺旋蒸发器。低压循环桶的作用是将储液罐中送来的制冷剂通过压缩机的吸气进一步冷却后,用重力供应的方法,供应到螺旋蒸发器中的吸热,吸热后的气体又回到低压循环桶进行进一步气液分离,分离后的气体再进入压缩机,从而保证压缩机不会倒霜。本发明的中央空调系统改变了氟利昂制冷系统传统的供液方式,采用重力液体供应替代传统的膨胀阀供气制冷,从而解决了传统氟利昂采用膨胀阀加分布器导致制冷管制冷分配不平衡的问题,能够使本发明的螺旋蒸发器实现完全平衡制冷,从而大大提高了氟利昂制冷效率,并节约了电能。
优选的是,所述低压循环桶与螺旋蒸发器的高度差为1.2-2.1米。在此高度差下可确保蒸发器的高效工作,使其具有最高的热交换效率,同时也能确保制冷剂循环回流及时,确保压缩机正常安全工作。
本发明的满液式中央空调系统还包括控制系统,所述控制系统为PLC控制系统,其监控整个系统的情况并依据检测结果自动调整系统的工作,所述控制系统与低压循环桶,储液罐、机油储罐等设备中设置的磁感应液位计、磁感应液位开关以及浮球式开关等连接,从而实现系统运行状态的实时监控,并能够根据反馈数据对系统进行有效调节,确保系统始终处于安全可靠的状态。
制冷循环可简述为:中央空调系统启动后,储液罐中的制冷剂进入到低压循环桶中,并在重力作用下沿管路进入到螺旋蒸发器中进行热交换变成气态,完成热交换的制冷剂返回到低压循环桶中,低压循环桶中此时存在液态的制冷剂和桶上部的气态制冷剂,气态制冷剂被抽入压缩机中进行压缩后进入到外置油分离器中,经外置油分离器将气体中的机油分离后通入到冷凝器中降温冷凝为液态,随后进入到储液罐中储存待进入下一个制冷循环,外置油分离器分离出的机油回流至机油储罐,机油储罐与压缩机连接随时为压缩机补充机油。在制冷循环中,由于制冷剂从低压循环桶进入到螺旋蒸发器是通过重力作用而不需要传统的泵入,因此本发明节省了能耗,同时通过重力作用向螺旋蒸发器供液的方式使得螺旋蒸发器中的蒸发器处于“充盈”状态,能够使其高负荷工作,从而具有高的热交换效率,使得本发明系统的制冷能效远远高于传统的氟利昂制冷系统。
较佳实施例中,所述压缩机设置为多台,各台压缩机的循环回路并联。例如图1所示有两台压缩机设置于系统中,两台压缩机的循环回路并联,即各台压缩机的制冷剂出口分别与外置油分离器的制冷剂进口连接,各台压缩机的制冷剂进口分别与低压循环桶的出气口连接,各压缩机循环回路并联配合其供液系统分开供液的形式,从而使本发明的中央空调系统能够在确保冷水水箱使用温度的同时适时自动开关机,从而使系统能够根据工作负荷自动选择所要启动的压缩机,实现准确调配,而无需每次系统启动都需要启动所有压缩机工作,实现节能的目的,同时也延长了系统中相关设备的使用寿命。
当然,所述低压循环桶连通每台压缩机的输气管路上均设置有用于对气体进行过滤的回气过滤器800。
本发明的螺旋蒸发器相较于传统的氟用卧式蒸发器或制冷管道横卧方式,其大大加快了氟利昂的蒸发速度,提升了热交换效率,因而提高了制冷能效,能耗降低。同时本发明的满液式中央空调系统的供液方式又确保了氟利昂安全可靠的要求。
较佳实施例中,如图2所示,本发明的满液式中央空调系统中所用螺旋蒸发器包括设置有制冷剂进口的输入管510和设置有制冷剂出口的输出管520,所述输入管和输出管之间并排设置有螺旋排管530,螺旋排管两端分别与输入管和输出管相连通,其中,所述输入管内设置有一用于分离制冷剂和机油的隔离板540,所述隔离板沿输入管管径分布从而将输入管内部分割成相连通的上下空间。
具体的,所述输入管上设置有回油管路550并通过回油管路连接至压缩机,所述回油管路上设置有引射泵,所述引射泵使高压气体的压力能转换为动能使高压气流经过喷嘴后的速度达到一个很高的值,此时流体周围的区域呈负压状态,而将低压流体引入将两股流体混合后再进入扩散口,将其转换成压力能完成整个引射作用。所述输入管内沉积的机油通过引射泵沿回油管路进入压缩机。
进一步地,所述隔离板通过其两端分别与输入管两端的连接来固定,所述隔离板呈水平放置,其两侧边与输入管管壁之间形成用于上下空间连通的缝隙。
本发明的中央空调工作时,由于改变了原有上供下吸的过程,随着制冷剂不断进入螺旋蒸发器,螺旋蒸发器中沉淀的机油也越来越多,在隔离板的阻隔作用下,机油会沿隔离板两侧缝隙流到输入管的下部,因此,在螺旋蒸发器的输入管中,隔离板下部的机油所占比重越来越高,在控制系统控制下,引射泵启动后将隔离板下的机油吸入到回油管路550中,机油沿回油管路回流至压缩机中参与制冷循环,而螺旋蒸发器由于消除了机油沉降的弊端,其也确保了本发明的中央空调系统始终保持良好的制冷能效,同时克服了传统制冷系统需要不断补充机油造成系统运行成本增加的弊端,大大提高了系统运行的可靠性。
有益效果:本发明提供一种满液式中央空调系统,该系统吸收了氨制冷节能、制冷效果好以及氟利昂安全方便的特点,大大提升了以氟利昂作为制冷剂系统的制冷效率,综合能效比得到明显提升,能耗大幅降低,运行成本降低,从而使本发明的中央空调系统具有极强的市场竞争力。
应当理解的是,本发明的应用不限于上述的举例,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,所有这些改进和变换都应属于本发明所附权利要求的保护范围。
Claims (6)
1.一种满液式中央空调系统,其特征在于,包括压缩机、冷凝器、外置油分离器、低压循环桶和螺旋蒸发器,所述压缩机的制冷剂出口连接外置油分离器的制冷剂进口,所述外置油分离器的制冷剂出口连接冷凝器的进口,所述冷凝器的出口连接低压循环桶的制冷剂进口,所述低压循环桶的制冷剂出口连接螺旋蒸发器的制冷剂进口,所述螺旋蒸发器的制冷剂出口与低压循环桶的进气口连接,所述低压循环桶的出气口与压缩机的制冷剂进口连接;压缩机压缩后的制冷剂气体经外置油分离器分离后进入到冷凝器冷凝,冷凝后制冷剂进入到低压循环桶并进一步流入螺旋蒸发器中吸热,吸热后的制冷剂从螺旋蒸发器中经进气口回到低压循环桶内,低压循环桶内的制冷器气体通过出气口进入压缩机中形成下一个制冷循环;
所述低压循环桶设置位置高于螺旋蒸发器设置位置,使低压循环桶内的制冷剂经制冷剂出口在重力作用下进入螺旋蒸发器;
所述制冷剂为氟利昂;
所述螺旋蒸发器包括设置有制冷剂进口的输入管和设置有制冷剂出口的输出管,所述输入管和输出管之间并排设置有螺旋排管,螺旋排管两端分别与输入管和输出管相连通,其中,所述输入管内设置有一用于分离制冷剂和机油的隔离板,所述隔离板沿输入管管径分布从而将输入管内部分割成相连通的上下空间;
所述输入管上设置有回油管路并通过回油管路连接至压缩机,所述回油管路上设置有引射泵,所述输入管内沉积的机油通过引射泵沿回油管路进入压缩机。
2.根据权利要求1所述的满液式中央空调系统,其特征在于,所述低压循环桶与螺旋蒸发器的高度差为1.2-2.1米。
3.根据权利要求1所述的满液式中央空调系统,其特征在于,所述满液式中央空调系统还包括用于储存机油的机油储罐,所述外置油分离器上的机油出口与机油储罐的进口连接,所述机油储罐的机油出口与压缩机上的机油入口连接。
4.根据权利要求1所述的满液式中央空调系统,其特征在于,所述满液式中央空调系统还包括用于储存制冷剂的储液罐,所述储液罐的进口与冷凝器的出口连接,所述储液罐的出口与低压循环桶的制冷剂进口连接。
5.根据权利要求4所述的满液式中央空调系统,其特征在于,所述冷凝器包括依次设置的高温冷凝器和低温冷凝器,通过外置油分离器制冷剂出口的制冷剂依次经过高温冷凝器和低温冷凝器的冷凝后进入储液罐中。
6.根据权利要求1所述的满液式中央空调系统,其特征在于,所述压缩机设置为多台,各台压缩机的循环回路并联。
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