CN100529606C - 工作范围扩展的制冷剂循环系统及其运行方法 - Google Patents
工作范围扩展的制冷剂循环系统及其运行方法 Download PDFInfo
- Publication number
- CN100529606C CN100529606C CNB2004800320343A CN200480032034A CN100529606C CN 100529606 C CN100529606 C CN 100529606C CN B2004800320343 A CNB2004800320343 A CN B2004800320343A CN 200480032034 A CN200480032034 A CN 200480032034A CN 100529606 C CN100529606 C CN 100529606C
- Authority
- CN
- China
- Prior art keywords
- system status
- compressor
- motor
- economizer
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2400/13—Economisers
-
- 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
- F25B2500/08—Exceeding a certain temperature value in a refrigeration component or cycle
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/026—Compressor control by controlling unloaders
- F25B2600/0261—Compressor control by controlling unloaders external to the compressor
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2509—Economiser valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/15—Power, e.g. by voltage or current
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
Abstract
一种设置有控制器的制冷剂循环,该控制器监控多个系统状况,例如压缩机马达的电流、电压、或温度、或者压缩机端口处的制冷剂状态状况。如果系统状况超过预定的最大值,对于马达的保护开关在操作上停止压缩机的运行。该控制器监控系统状况,并且确定当该系统状况朝向预定极限移动时该系统状况表明该保护开关可被促动。在这种情况下,该控制器将压缩机切换到负荷较低模式的运行状态,以便该保护开关不会被促动。
Description
技术领域
本发明总体上涉及这样一种技术构思,即,监控制冷剂循环的系统状况,并且如果这些状况接近极限状况则降低压缩机负荷,以便防止压缩机有害的停机和最终用户所需的制冷负荷的完全损失。
背景技术
制冷剂循环用于HVAC(采暖、通风和空调)系统、制冷单元、和其它的各种应用场合。在常规的制冷剂循环中,压缩机压缩制冷剂并且将该制冷剂输送到冷凝器。制冷剂从冷凝器流动到膨胀装置,并且从膨胀装置流向蒸发器。制冷剂从蒸发器返回到压缩机。
在制冷剂循环领域中的最近一项发展是设置节约器循环。在节约器循环中,冷凝器下游的制冷剂的一部分被分流并且流经节约器膨胀装置,并且随后流入节约器热交换器。来自冷凝器的主制冷剂流也流经同一节约器热交换器,优选的是以逆流方式流经同一节约器热交换器。在该节约器热交换器中,分流的制冷剂流冷却该主制冷剂流。以这样的方式,可由主制冷剂流提供更大的冷却能力。在节约器热交换器下游,该分流的制冷剂返回到压缩机的节约器端口。
在制冷剂循环中用于压缩机的马达通常设置有停机保护装置。如果出现过大的电流,这些停机保护装置可关断压缩机的马达。而且,如果马达温度过高,这些停机保护装置还可断开,以便使得马达停机。
在许多极限负荷状态下,例如当环境温度较高并且线电压较低时,这些状况可能导致促动保护装置开关,并且使得马达停机。当然,环境温度较高时的状况对于使得制冷剂循环停机而言不是最佳时机,这是因为在这样的状况下,冷却负荷是所需的并且是最希望的。因此,该保护开关极倾向于使马达运行停机的时刻也是最不希望这样做的时刻。
对于制冷剂循环设计者特别是压缩机制造商的一个挑战在于使得的压缩机壳体的总体尺寸保持为较小。同时,用于压缩机的马达必须足够大以便在上述极限负荷状况下驱动该压缩机。
发明内容
在本发明所披露的实施例中,监控在制冷剂循环中的状况。如果这些状况接近可能马上导致保护开关促动的极限工作点,则用于该制冷剂循环的控制器预计到其发生并且对压缩机进行卸载以便防止系统停机。例如,如果制冷剂循环包括节约器支路,并且如果控制器感测到压缩机马达接近极限工作点,则该控制器可将该制冷剂循环切换到非节约式模式。在非节约式模式下的制冷剂循环中,或当制冷剂循环以非节约方式工作并且负荷仍没有充分降低式,旁通卸载阀可打开以便进一步降低压缩机负荷。
另外,如果用于驱动压缩机的电动马达是多速电动马达或可变速马达,则马达控制器可降低该马达的运行速度以便降低负荷。应当注意,为了理解本发明的保护范围,术语“可变速马达”应当理解为具有多个不连续的速度的多速电动马达或者是无级变速马达。也就是说,任何类型的马达可用于本发明,并且通称为“可变速马达”。此外,为了相同的目的,可利用其它已知的方法以应用于不同类型的压缩机,例如压缩缸卸载、滑阀、吸气端口节流等。所有这些控制步骤使得制冷剂循环的冷却能力比对于特定环境状况所需或所希望的冷却能力低。然而,通过降低该能力并由此降低负荷,压缩机避免了在其它情况下出现的停机。因此,总体而言,即使该制冷剂循环以低于所需能力的状态下工作,也实现了所希望的效果。
在优选实施例中,制冷剂循环设置有涡旋式压缩机。然而,本发明可应用于其它类型的压缩机,例如螺杆式压缩机、往复式活塞压缩机等。
参照以下附图并结合以下的详细描述,可更好地理解本发明的这些和其它的特征。
附图说明
图1是本发明的制冷剂循环的示意图。
图2是本发明的示意流程图。
具体实施方式
图1示出了具有压缩机21的制冷剂循环20,该压缩机将制冷剂输送到出口端口22。制冷剂从出口端口22流动到冷凝器24。已知的是,在冷凝器24中,制冷剂与外界空气源进行热交换。
在冷凝器24下游的是节约器热交换器26。主制冷剂流动管路28将制冷剂从冷凝器24输送到节约器热交换器26的第一支路。管路30使得来自主制冷剂管路28的制冷剂的一部分分流出来,并且使得该被分流出来的制冷剂流经节约器膨胀装置32。此刻,分流管路30中的制冷剂比保留在主制冷剂管路28中的制冷剂更冷。在节约器热交换器26中,被分流的制冷剂使得主制冷剂管路28中的主制冷剂过冷。该被分流的制冷剂经管路中的截止阀34返回到压缩机21的中间压缩点38。
已知的是,压缩机21是涡旋式压缩机,并且已知的是,该返回的节约器流的喷射是在压缩循环的吸气和排气之间的位置处实施的。
来自节约器热交换器26的主制冷剂流经主膨胀装置40且流动到蒸发器42。已知的是,在蒸发器42中,该制冷剂与被冷却的空气源进行热交换。吸气管路48将蒸发器42与压缩机吸气管49连接。
卸载旁通阀44设置在使得吸气管路48与节约器返回管路36连接的旁通管路46上。已知的是,当卸载旁通阀44打开并且节约器截止阀34关闭时,制冷剂可从中间端口38返回到吸气管路48。当然,设置卸载旁通阀的其它位置也是已知的。此外,卸载旁通阀44和节约器截止阀34可以同时打开,以便提供额外的卸载措施。
另外,尽管所示的压缩机21是涡旋式压缩机,但是其它类型压缩机也可获得由本发明的技术构思所实现的优点。特别是,螺杆式压缩机通常具有卸载滑阀。往复式活塞压缩机可具有各种形式的安装在压缩缸上的卸载阀。所有这些类型的压缩机可如下所述地获得由本发明的技术构思所实现的优点。
在压缩机内设置有马达51和马达保护装置53。已知的是,该马达保护装置通常包括保护开关,如果在马达处的温度超过预定的最大值,或者如果电流超过预定的最大值,或者电流和温度的组合超过一特定数值,则该保护开关断开。此外,电流或功率感测装置(例如电子电路板)可用于检测压缩机马达过载状况。也就是说,该保护开关53可断开以便使得马达51停机从而在感测到某种极限工作状况时保护压缩机21。
由保护开关53使得马达51停机是不希望的。特别是,停机往往可能出现在制冷剂循环的负荷最大的时刻。例如,如果在制冷剂系统20的周围环境中的环境温度非常高和/或线电压下降到低于其额定水平,这样,对于冷却蒸发器42中的室内空气流的负荷处于其最大值。在这种状况下,马达51的电流、功率、和温度也可能达到较高程度。在这种状况下,电流、功率、或温度中的任一个比较低负荷状况时更可能超过最大值。然而,如上所述,对于使得马达51停机而言这也是一个不适当的时刻,这是因为最终拥护失去了整个冷却负荷。
因此,本发明包括一种监控系统状况并且如果系统状况接近保护开关53的极限时降低压缩机负荷的方法。例如,控制器50可接收来自马达51的电流、功率(在特定线电压时)、或温度传感器的反馈。如果这些状况中的任何一项接近保护开关53的极限,则控制器52可使得制冷剂循环20切换到卸载操作。例如,节约器阀34在最大系统能力情况下是常开的。如果该状况表明压缩机接近极限,控制器可关闭该节约器阀34以便关断节约器工作。以这样的方式,可降低对于压缩机21的负荷,并且对于这些系统状况而言的马达电流、马达功率、或马达温度也下降,这降低了促动保护开关53的可能性。
作为第二措施,或者在不包括节约器循环的系统中,卸载旁通阀44可打开。以这样的方式,被压缩的制冷剂的量降低,并且对于压缩机21的负荷也降低。在这样的系统状况下,该系统负荷也可能降低(这是由于冷凝器和蒸发器中的制冷剂压力下降),并且使得系统负荷更远离导致促动保护开关53的极限情况。另外,在某些状况下,如果仅仅关断节约器阀34不足以降低系统状况,则还可打开卸载旁通阀44。当节约器截止阀34和卸载旁通阀44均打开时,可实现附加的卸载步骤。
图1还示意性地示出了两个附加特征。首先,控制器50可用于控制马达51的速度,如果马达51是多速马达或可变速马达的话。在这种状况下,如果系统状况接近保护开关53的最大范围,则可降低该马达51的速度以便降低负荷。
另外,传感器54可监控进入吸气管49的制冷剂的压力和温度,并且传感器55可监控离开排气管22的制冷剂压力,以便代替监控压缩机马达参数例如功率、电流、或温度。本领域的普通技术人员应当理解如何利用吸气压力和吸气温度以及排气压力来预测对于压缩机的负荷,并且由此可确定该负荷是否接近可能导致保护开关53被促动的状况。如果是这样,则执行上述的多种控制策略中的一种。应当理解,为了在节约器模式工作时确定压缩机功率,所希望的是将附加的压力和温度传感器56定位在节约器管路36上位于或靠近节约器压缩机端口。在所有情况下,当功率作为决定性参数时,优选的是同样需要测量基准线电压。还可利用压缩机排气端口温度来确定马达跳停的状况。
尽管本发明参照马达或在压缩机吸气端口、节约器端口、和排气端口处的制冷剂状态来描述“系统状况”,但是已知的是可使用其它替代方式依据压缩机壳体内的其它位置处的状态来确定压缩机内的不希望的状况。本发明还涉及“系统状况”的任何传感器以及在所有位置和任何类型的状况。示例包括马达温度、油槽温度、马达电流、马达功率、排气温度、吸气压力、排气压力、节约器压力、节约器温度、工作电压、周围环境温度、节约器压力或节约器温度。
通常的是,并且如图2所示,制冷剂循环20设置有连续监控至少一个系统参数的控制器50。如果该系统参数接近极限数值,则采取控制措施以便将该负荷降低到当前负荷数值之下。例如,节约器循环可中止,压缩机可卸载,马达速度可降低,等等。
本发明由此提供了这样一种能力,即,可连续供应一定冷却能力,然而在现有技术情况下,现有技术的系统可能终止压缩机的工作。因此,在某种意义上,该制冷剂系统可被认为是在保持制冷剂系统运行的同时提供尽可能最大的能力。
而且,由于本发明具有确保不合适的负荷不在长时间段内施加给马达的控制器,因此在许多情况下在设计压缩机21时可使用小型的马达。或者,较大尺寸的泵送单元可容纳在相同尺寸的压缩机壳体内以匹配相同尺寸的马达。这对于压缩机设计者而言在获得压缩机泵送单元的能力提高方面提供了更大的自由度。
尽管描述了本发明的优选实施例,但是本领域的普通技术人员应当理解在本发明的范围内可作出各种变型。因此,以下的权利要求应当理解成确定了本发明的真正的范围和内容。
Claims (12)
1.一种压缩机,其包括
压缩机泵送单元,该压缩机泵送单元由马达驱动;
与所述马达相关的保护装置,如果第一系统状况达到预定水平,所述保护装置在操作上使得所述马达的运行停止;和
用于所述压缩机的控制器,所述控制器监控第二系统状况,并且识别出何时所述第二系统状况表明所述第一系统状况正接近所述预定水平,当所述第一系统状况接近所述预定水平时所述控制器在操作上降低对于所述压缩机的负荷;
其中所述第二系统状况是以下中的至少一种:马达温度、油槽温度、马达电流、马达功率、排气温度、吸气压力、排气压力、工作电压、周围环境温度、节约器压力和节约器温度。
2.如权利要求1所述的压缩机,其特征在于,如果所述第一系统状况接近所述预定水平,所述控制器在操作上打开所述压缩机的卸载阀。
3.如权利要求1所述的压缩机,其特征在于,如果所述第一系统状况接近所述预定水平,所述控制器在操作上关闭所述压缩机的节约器阀。
4.如权利要求1所述的压缩机,其特征在于,所述马达是可变速马达,并且如果所述第一系统状况接近所述预定水平,所述控制器在操作上降低压缩机马达速度。
5.如权利要求1所述的压缩机,其特征在于,所述第一系统状况中的至少一种和所述第二系统状况中的至少一种是相同的。
6.一种制冷剂循环系统,其包括:
压缩机,该压缩机包括压缩机泵送单元和驱动该压缩机泵送单元的马达,所述马达设置有保护装置,如果第一系统状况超过预定水平,所述保护装置在操作上使得所述马达的运行停止;
在所述压缩机下游的冷凝器;
在所述冷凝器下游的膨胀装置;
在所述膨胀装置下游的蒸发器;和
用于至少控制所述压缩机的控制器,所述控制器在操作上感测第二系统状况,并且如果所述第二系统状况表明所述第一系统状况正接近所述预定水平,所述控制器在操作上使得所述制冷剂循环系统切换到负荷较低模式运行;
其中所述第二系统状况是以下中的至少一种:马达温度、油槽温度、马达电流、马达功率、排气温度、吸气压力、排气压力、工作电压、周围环境温度、节约器压力和节约器温度,并且所述控制器在操作上通过监控所述马达温度、油槽温度、马达电流、马达功率、排气温度、吸气压力、排气压力、工作电压、周围环境温度、节约器压力和节约器温度中的所述至少一种,从而确定所述第一系统状况正接近所述预定的水平。
7.如权利要求6所述的制冷剂循环系统,其特征在于,当所述第二系统状况表明所述第一系统状况正接近所述预定水平时,所述控制器促动卸载阀,该卸载阀用于对所述压缩机泵送单元进行卸载并且使得被压缩的制冷剂返回到吸气管路。
8.如权利要求6所述的制冷剂循环系统,其特征在于,所述制冷剂循环系统还包括在所述冷凝器与所述膨胀装置之间的节约器循环装置,所述节约器循环装置设置有截止阀,并且如果当所述第二系统状况表明所述第一系统状况正接近所述预定水平时,所述控制器借助关闭所述截止阀从而停止所述节约器循环装置的运行。
9.如权利要求6所述的制冷剂循环系统,其特征在于,所述制冷剂循环系统还包括在所述冷凝器与所述膨胀装置之间的节约器循环装置,所述节约器循环装置设置有截止阀,并且如果当所述第二系统状况表明所述第一系统状况正接近所述预定水平并且节约器截止阀和卸载旁通阀均打开时,所述控制器借助关闭所述截止阀从而停止所述节约器循环装置的运行。
10.如权利要求6所述的制冷剂循环系统,其特征在于,所述马达是可变速马达,并且当所述第二系统状况表明所述第一系统状况正接近所述预定水平时,所述控制器在操作上降低压缩机马达速度。
11.如权利要求6所述的制冷剂循环系统,其特征在于,所述第一系统状况和所述第二系统状况是相同的状况。
12.一种运行制冷剂循环系统的方法,其包括以下步骤:
(1)监控压缩机的第一系统状况,并且提供用于压缩机的马达,该压缩机带有截止阀,如果所述第一系统状况超过预定最大值,所述截止阀在操作上停止所述压缩机马达的运行;和
(2)监控第二系统状况,并且确定何时所述第二系统状况表明所述第一系统状况正接近所述预定最大值,并且当所述第二系统状况表明所述第一系统状况正接近所述预定最大值时将所述制冷剂循环系统切换到较低能力模式运行;
其中所述第二系统状况是以下中的至少一种:马达温度、油槽温度、马达电流、马达功率、排气温度、吸气压力、排气压力、工作电压、周围环境温度、节约器压力和节约器温度。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/695,114 US6925823B2 (en) | 2003-10-28 | 2003-10-28 | Refrigerant cycle with operating range extension |
US10/695,114 | 2003-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1874718A CN1874718A (zh) | 2006-12-06 |
CN100529606C true CN100529606C (zh) | 2009-08-19 |
Family
ID=34522717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004800320343A Expired - Fee Related CN100529606C (zh) | 2003-10-28 | 2004-10-27 | 工作范围扩展的制冷剂循环系统及其运行方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6925823B2 (zh) |
EP (1) | EP1681990A4 (zh) |
JP (1) | JP2007510126A (zh) |
KR (1) | KR100793489B1 (zh) |
CN (1) | CN100529606C (zh) |
AU (1) | AU2004288194A1 (zh) |
BR (1) | BRPI0415412A (zh) |
CA (1) | CA2541512A1 (zh) |
MX (1) | MXPA06004685A (zh) |
WO (1) | WO2005045330A2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104676995A (zh) * | 2015-02-02 | 2015-06-03 | 山东新力拓节能服务工程科技有限公司 | 冷冻站控制系统中判断磁悬浮冷水机组运行状态的方法 |
Families Citing this family (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8337166B2 (en) | 2001-11-26 | 2012-12-25 | Shurflo, Llc | Pump and pump control circuit apparatus and method |
US8540493B2 (en) | 2003-12-08 | 2013-09-24 | Sta-Rite Industries, Llc | Pump control system and method |
US8480373B2 (en) | 2004-08-26 | 2013-07-09 | Pentair Water Pool And Spa, Inc. | Filter loading |
US7874808B2 (en) * | 2004-08-26 | 2011-01-25 | Pentair Water Pool And Spa, Inc. | Variable speed pumping system and method |
US7686589B2 (en) | 2004-08-26 | 2010-03-30 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US8043070B2 (en) * | 2004-08-26 | 2011-10-25 | Pentair Water Pool And Spa, Inc. | Speed control |
US8602745B2 (en) | 2004-08-26 | 2013-12-10 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-dead head function |
US8469675B2 (en) | 2004-08-26 | 2013-06-25 | Pentair Water Pool And Spa, Inc. | Priming protection |
US7845913B2 (en) | 2004-08-26 | 2010-12-07 | Pentair Water Pool And Spa, Inc. | Flow control |
US8019479B2 (en) | 2004-08-26 | 2011-09-13 | Pentair Water Pool And Spa, Inc. | Control algorithm of variable speed pumping system |
WO2006113780A2 (en) * | 2005-04-15 | 2006-10-26 | Kitsch William J | Modulating proportioning reversing valve |
CN101171464B (zh) * | 2005-05-04 | 2011-11-23 | 开利公司 | 具有变速涡旋压缩机和经济器回路的制冷系统及运行方法 |
WO2006132638A1 (en) * | 2005-06-07 | 2006-12-14 | Carrier Corporation | Variable speed compressor motor control for low speed operation |
KR100652607B1 (ko) * | 2005-10-24 | 2006-12-01 | 엘지전자 주식회사 | 왕복동식 압축기의 운전 제어 장치 및 그 방법 |
ES2692800T3 (es) * | 2005-10-26 | 2018-12-05 | Carrier Corporation | Sistema refrigerante con componentes de modulación de anchura de pulsos y compresor de velocidad variable |
DE102006037385A1 (de) * | 2006-08-09 | 2008-02-14 | Leipoldt, Matthias, Dipl.-Ing. | Kühlsystem |
CN101523129B (zh) * | 2006-10-06 | 2011-01-19 | 开利公司 | 制冷系统及运行制冷系统的方法 |
US8312737B2 (en) * | 2006-12-29 | 2012-11-20 | Carrier Corporation | Economizer heat exchanger |
EP1983275A1 (en) * | 2007-04-17 | 2008-10-22 | Scroll Technologies | Refrigerant system with multi-speed scroll compressor and economizer circuit |
US20080264080A1 (en) * | 2007-04-24 | 2008-10-30 | Hunter Manufacturing Co. | Environmental control unit for harsh conditions |
WO2008143608A1 (en) * | 2007-05-15 | 2008-11-27 | Carrier Corporation | Compressor motor control |
US7997092B2 (en) * | 2007-09-26 | 2011-08-16 | Carrier Corporation | Refrigerant vapor compression system operating at or near zero load |
JP4608537B2 (ja) * | 2007-12-05 | 2011-01-12 | 株式会社神戸製鋼所 | 冷凍装置 |
MX2011003708A (es) | 2008-10-06 | 2011-06-16 | Pentair Water Pool & Spa Inc | Metodo para operar un sistema de seguridad para alivio de vacio. |
US8082747B2 (en) * | 2008-12-09 | 2011-12-27 | Thermo King Corporation | Temperature control through pulse width modulation |
EP2379959B1 (en) * | 2008-12-29 | 2019-02-06 | Carrier Corporation | Truck trailer refrigeration system |
US8564233B2 (en) | 2009-06-09 | 2013-10-22 | Sta-Rite Industries, Llc | Safety system and method for pump and motor |
US8436559B2 (en) | 2009-06-09 | 2013-05-07 | Sta-Rite Industries, Llc | System and method for motor drive control pad and drive terminals |
US9556874B2 (en) | 2009-06-09 | 2017-01-31 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US8508166B2 (en) | 2009-08-10 | 2013-08-13 | Emerson Climate Technologies, Inc. | Power factor correction with variable bus voltage |
US8264192B2 (en) | 2009-08-10 | 2012-09-11 | Emerson Climate Technologies, Inc. | Controller and method for transitioning between control angles |
US8698433B2 (en) * | 2009-08-10 | 2014-04-15 | Emerson Climate Technologies, Inc. | Controller and method for minimizing phase advance current |
JP5421717B2 (ja) * | 2009-10-05 | 2014-02-19 | パナソニック株式会社 | 冷凍サイクル装置および温水暖房装置 |
CA2820887C (en) | 2010-12-08 | 2019-10-22 | Pentair Water Pool And Spa, Inc. | Discharge vacuum relief valve for safety vacuum release system |
WO2013067206A1 (en) | 2011-11-01 | 2013-05-10 | Pentair Water Pool And Spa, Inc. | Flow locking system and method |
US9634593B2 (en) | 2012-04-26 | 2017-04-25 | Emerson Climate Technologies, Inc. | System and method for permanent magnet motor control |
DE102012107183B4 (de) * | 2012-08-06 | 2016-08-04 | Kriwan Industrie-Elektronik Gmbh | Verfahren zur Regelung eines Verdichters einer Kälteanlage sowie eine Kälteanlage |
US9746227B2 (en) | 2012-08-06 | 2017-08-29 | Kriwan Industrie-Elektronik Gmbh | Method for controlling a compressor of a refrigeration system, and refrigeration system |
WO2014026124A1 (en) | 2012-08-10 | 2014-02-13 | Emerson Climate Technologies, Inc. | Motor drive control using pulse-width modulation pulse skipping |
US9885360B2 (en) | 2012-10-25 | 2018-02-06 | Pentair Flow Technologies, Llc | Battery backup sump pump systems and methods |
US9175891B2 (en) * | 2012-12-28 | 2015-11-03 | Bosch Automotive Service Solutions Inc. | Method and system for a portable refrigerant recovery unit load controller |
CN105051370B (zh) | 2013-02-05 | 2018-01-26 | 艾默生环境优化技术有限公司 | 压缩机冷却系统 |
ITVI20130257A1 (it) * | 2013-10-18 | 2015-04-19 | Carel Ind Spa | Metodo di azionamento di una macchina frigorifera dotata di apparato economizzatore |
KR102242776B1 (ko) * | 2014-03-20 | 2021-04-20 | 엘지전자 주식회사 | 공기조화기 및 그 제어방법 |
US11466911B2 (en) * | 2016-11-30 | 2022-10-11 | Dc Engineering, Inc. | Method and system for improving refrigeration system efficiency |
IT201700061040A1 (it) * | 2017-06-05 | 2018-12-05 | Carel Ind Spa | Metodo di azionamento di un compressore di macchina frigorifera e compressore di macchina frigorifera |
WO2019069441A1 (ja) * | 2017-10-06 | 2019-04-11 | 三菱電機株式会社 | 冷凍サイクル装置 |
US11073319B2 (en) * | 2017-12-29 | 2021-07-27 | Johnson Controls Technology Company | Capacity control technique with motor temperature override |
JP6857813B2 (ja) * | 2018-03-05 | 2021-04-14 | パナソニックIpマネジメント株式会社 | 冷凍サイクル装置 |
US11397034B2 (en) | 2018-06-27 | 2022-07-26 | Carrier Corporation | Unloading system for variable speed compressor |
US11506339B2 (en) | 2018-08-01 | 2022-11-22 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Device and process for refueling containers with pressurized gas |
CN109210732B (zh) * | 2018-08-29 | 2021-03-23 | 重庆美的通用制冷设备有限公司 | 空调机组的过温保护方法、装置、空调机组和电子设备 |
IT201800010932A1 (it) | 2018-12-10 | 2020-06-10 | Carel Ind Spa | Metodo di azionamento di un compressore di macchina frigorifera e compressore di macchina frigorifera |
US11885548B2 (en) * | 2019-01-07 | 2024-01-30 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus that injects refrigerant into compressor during low load operation |
US11435125B2 (en) | 2019-01-11 | 2022-09-06 | Carrier Corporation | Heating compressor at start-up |
US11624539B2 (en) | 2019-02-06 | 2023-04-11 | Carrier Corporation | Maintaining superheat conditions in a compressor |
US11131491B1 (en) | 2020-08-07 | 2021-09-28 | Emerson Climate Technologies, Inc. | Systems and methods for multi-stage operation of a compressor |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3092910A (en) * | 1961-03-02 | 1963-06-11 | Joe F Warriner | End instrument for dental evacuator |
JPS6332255A (ja) * | 1986-07-25 | 1988-02-10 | 株式会社東芝 | 空気調和機 |
US4667480A (en) * | 1986-09-22 | 1987-05-26 | General Electric Company | Method and apparatus for controlling an electrically driven automotive air conditioner |
JP2557903B2 (ja) * | 1987-09-10 | 1996-11-27 | 株式会社東芝 | 空気調和機 |
US4913625A (en) * | 1987-12-18 | 1990-04-03 | Westinghouse Electric Corp. | Automatic pump protection system |
FR2642298A1 (fr) * | 1989-02-02 | 1990-08-03 | Philippe Bagur | Miroir aspirant a usage dentaire |
US5054294A (en) * | 1990-09-21 | 1991-10-08 | Carrier Corporation | Compressor discharge temperature control for a variable speed compressor |
US5463874A (en) * | 1993-10-04 | 1995-11-07 | Tecumseh Products Company | Inductively activated control and protection circuit for refrigeration systems |
US5713724A (en) * | 1994-11-23 | 1998-02-03 | Coltec Industries Inc. | System and methods for controlling rotary screw compressors |
JPH08219058A (ja) * | 1995-02-09 | 1996-08-27 | Matsushita Electric Ind Co Ltd | 密閉型電動圧縮機 |
US5707210A (en) * | 1995-10-13 | 1998-01-13 | Copeland Corporation | Scroll machine with overheating protection |
DE19622267C1 (de) * | 1996-06-03 | 1997-12-18 | Sauer Sundstrand Gmbh & Co | Steuer- und Regelsystem für verstellbare Hydraulikpumpen mit Maximaldruckbegrenzung |
US5875637A (en) * | 1997-07-25 | 1999-03-02 | York International Corporation | Method and apparatus for applying dual centrifugal compressors to a refrigeration chiller unit |
US6206652B1 (en) * | 1998-08-25 | 2001-03-27 | Copeland Corporation | Compressor capacity modulation |
US6047556A (en) * | 1997-12-08 | 2000-04-11 | Carrier Corporation | Pulsed flow for capacity control |
US6099259A (en) * | 1998-01-26 | 2000-08-08 | Bristol Compressors, Inc. | Variable capacity compressor |
US5951284A (en) * | 1998-03-10 | 1999-09-14 | Lake; James A. | Intraoral instrument |
BE1013150A3 (nl) * | 1999-11-24 | 2001-10-02 | Atlas Copco Airpower Nv | Inrichting en werkwijze voor het koeldrogen. |
JP4639413B2 (ja) * | 1999-12-06 | 2011-02-23 | ダイキン工業株式会社 | スクロール圧縮機および空気調和機 |
US6302654B1 (en) * | 2000-02-29 | 2001-10-16 | Copeland Corporation | Compressor with control and protection system |
JP4273613B2 (ja) * | 2000-03-06 | 2009-06-03 | 株式会社デンソー | 空調装置 |
-
2003
- 2003-10-28 US US10/695,114 patent/US6925823B2/en not_active Expired - Fee Related
-
2004
- 2004-10-27 EP EP04796652A patent/EP1681990A4/en not_active Withdrawn
- 2004-10-27 AU AU2004288194A patent/AU2004288194A1/en not_active Abandoned
- 2004-10-27 WO PCT/US2004/035817 patent/WO2005045330A2/en active Application Filing
- 2004-10-27 JP JP2006538250A patent/JP2007510126A/ja active Pending
- 2004-10-27 CN CNB2004800320343A patent/CN100529606C/zh not_active Expired - Fee Related
- 2004-10-27 CA CA002541512A patent/CA2541512A1/en not_active Abandoned
- 2004-10-27 KR KR1020067007172A patent/KR100793489B1/ko not_active IP Right Cessation
- 2004-10-27 BR BRPI0415412-6A patent/BRPI0415412A/pt not_active IP Right Cessation
- 2004-10-27 MX MXPA06004685A patent/MXPA06004685A/es not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104676995A (zh) * | 2015-02-02 | 2015-06-03 | 山东新力拓节能服务工程科技有限公司 | 冷冻站控制系统中判断磁悬浮冷水机组运行状态的方法 |
Also Published As
Publication number | Publication date |
---|---|
KR100793489B1 (ko) | 2008-01-14 |
EP1681990A2 (en) | 2006-07-26 |
MXPA06004685A (es) | 2006-06-27 |
US6925823B2 (en) | 2005-08-09 |
WO2005045330A2 (en) | 2005-05-19 |
US20050086957A1 (en) | 2005-04-28 |
CA2541512A1 (en) | 2005-05-19 |
KR20060083220A (ko) | 2006-07-20 |
CN1874718A (zh) | 2006-12-06 |
WO2005045330A3 (en) | 2005-09-29 |
EP1681990A4 (en) | 2009-04-15 |
BRPI0415412A (pt) | 2006-12-05 |
AU2004288194A1 (en) | 2005-05-19 |
JP2007510126A (ja) | 2007-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100529606C (zh) | 工作范围扩展的制冷剂循环系统及其运行方法 | |
US20060225445A1 (en) | Refrigerant system with variable speed compressor in tandem compressor application | |
CN101501411B (zh) | 热泵单元中压缩机无动力反向转动的预防 | |
CN101018988A (zh) | 防止在停机时无动力反向运行的阀 | |
CN1995875A (zh) | 能力可变式空气调节器 | |
AU2006340101B2 (en) | Slide valve with hot gas bypass port | |
CN101627268A (zh) | 通过降低吸气压力提高效率的脉宽调制 | |
KR100984215B1 (ko) | 냉동장치 | |
WO2005076971A2 (en) | Control of multi-circuit economized system | |
CN101307962A (zh) | 具有多速涡旋压缩机和经济器回路的制冷剂系统 | |
CN113597511A (zh) | 压缩机系统及其控制方法 | |
JP3984258B2 (ja) | 空気調和機 | |
JP3718870B2 (ja) | 冷凍装置の運転制御装置 | |
KR20060039742A (ko) | 유로차단밸브를 구비한 멀티형 공기조화기 | |
JP2983782B2 (ja) | 空気調和装置 | |
JP2008261532A (ja) | 空気調和機 | |
KR100538827B1 (ko) | 공기조화기 및 그 제어 방법 | |
KR100744774B1 (ko) | 공기조화기 | |
JP2000154950A (ja) | エンジン駆動式ヒートポンプサイクル | |
CN117469833A (zh) | 具有可变速的第一级的两级压缩机 | |
JPS6273056A (ja) | エンジン駆動ヒ−トポンプにおける圧縮機の過負荷低減装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20151027 |
|
EXPY | Termination of patent right or utility model |