CN101251288A - 水冷式空调和用于控制所述水冷式空调的方法 - Google Patents
水冷式空调和用于控制所述水冷式空调的方法 Download PDFInfo
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Abstract
本发明公开了一种水冷式空调和用于控制所述水冷式空调的方法。该方法包括步骤:判定用于实现水和制冷剂之间的热交换、通过冷凝器供给到加热系统或热生活用水供给系统的水的温度是否低于基准温度;以及当判定水的温度低于基准温度时,将通过冷凝器冷凝的一部分制冷剂转换成气相,并在没有通过蒸发器的情况下,将气相制冷剂发送到压缩机。
Description
技术领域
本发明涉及一种水冷式空调和用于控制所述水冷式空调的方法,更具体而言,本发明涉及一种水冷式空调和用于控制所述水冷式空调的方法,其中即使非常寒冷的地区,加热水或热生活用水(hot sanitary water)的温度也会升高。
背景技术
通常,水冷式空调是执行供给到代替鼓风扇安装在冷凝器中的供水管的水和沿制冷剂管流动的制冷剂之间的热交换的装置。韩国专利公开文件第10-2005-0046844号披露了一种水冷式空调,其中从存储箱中流出来的水进入水冷式冷凝器,通过冷却水循环部分,以便与沿冷却水循环部分流动的制冷剂进行热交换,并然后返回到存储箱内部。
另外,还研制了具有改善了上述专利中公开的水冷式空调的结构的另一水冷式空调。以加热房间为主要目的安装这种水冷式空调,并且使用通过水冷式冷凝器与制冷剂进行热交换而加热的水作为加热水或热生活用水。即,改善的水冷式空调包括压缩机、水冷式冷凝器、蒸发器和如以上专利中所公开安装在室外单元中的膨胀装置、以及安装在室内空间的地板或墙壁上的加热管。然后,通过水冷式冷凝器加热的水沿加热管流动,因此加热室内空间。
然而,上述传统的水冷式空调的缺点在于,当室外空气温度较低时,加热容量下降,并且限制了热生活用水的温度的升高。当室外空气温度较低时,沿安装在室外单元中的制冷剂管流动的制冷剂的密度降低,并且制冷剂流中的制冷剂的质量降低。因此,水冷式空调具有降低的热交换容量,并因此减少加热容量或热生活用水不能升高到高温。
这里,提出了一种用于在压缩机的出口侧增加压力以便使加热水的温度或热生活用水的温度升高的方法。当压缩机出口侧的压力增加时,压缩机的压缩比过度增加,并因此压缩机过载且具有缩短的使用寿命。当室外空气温度低时,蒸发器中的液相制冷剂不能被充分蒸发,并因此使压缩机入口侧的压力变得相对低。另一方面,当压缩机出口的压力增加以便升高加热水或热生活用水的温度时,压缩比反常地增加并接着使压缩机过载。因此,用于增加压缩机的压缩容量以便解决上述问题的方法不实用。
发明内容
因此,本发明的一个方面是提供一种水冷式空调及用于控制所述水冷式空调的方法,其中即使当室外气温较低时,加热水或热生活用水的温度也可升高。
根据一个方面,本发明提供一种用于控制水冷式空调的方法,包括步骤:判定用于实现水和制冷剂之间的热交换、通过冷凝器供给到加热系统或热生活用水供给系统的水的温度是否低于基准温度;以及当判定水的温度低于基准温度时,将通过冷凝器冷凝的一部分制冷剂转换成气相,并在没有通过蒸发器的情况下,将所述气相制冷剂发送到压缩机。
通过调节安装在所述冷凝器和所述蒸发器之间的电动膨胀阀的打开程度可以使通过冷凝器冷凝的所述一部分制冷剂转换成气相制冷剂。
气相制冷剂可以通过打开安装在连接气-液分离器和压缩机的喷射管中的喷射阀、被发送到压缩机,所述气-液分离器安装在电动膨胀阀与蒸发器之间。
根据另一方面,本发明提供了一种水冷式空调,包括:压缩机,所述压缩机用于压缩通过与室外空气在蒸发器中进行热交换而蒸发的制冷剂;冷凝器,所述冷凝器用于通过与水进行热交换使从压缩机排出的制冷剂冷凝成液相;加热或热生活用水供给系统,所述加热或热生活用水供给系统利用通过冷凝器加热的水;第二电动膨胀阀,所述第二电动膨胀阀用于使从冷凝器排出的液相制冷剂转换成气-液混合相制冷剂;气-液分离器,所述气-液分离器用于使气-液混合相制冷剂分离成气相制冷剂和液相制冷剂;第一电动膨胀阀,所述第一电动膨胀阀用于通过减压使从所述气-液分离器排出的液相制冷剂膨胀并将所述制冷剂发送到蒸发器;以及喷射阀,所述喷射阀安装在喷射管中,所述喷射管用于将从气-液分离器排出的气相制冷剂发送到压缩机。
喷射管可以连接到所述压缩机的压缩室或压缩机的吸入管。
所述水冷式空调可以进一步包括:水温传感器,所述水温传感器用于测量通过冷凝器供给到所述加热或热生活用水供给系统的水的温度;以及微型计算机,所述微型计算机用于当通过水温传感器测量的水温低于基准温度时打开喷射阀,以便将气相制冷剂发送到压缩机。
冷凝器和蒸发器可以安装在室外单元中,并且所述加热系统可以安装在室内空间中。
附图说明
将从以下的实施例的说明中,参照附图使本发明的这些和/或其它方面和优点变得更显而易见并更易于理解,其中:
图1是说明根据本发明的实施例的水冷式空调中的制冷剂流和热水流的示意图;
图2是根据本发明的实施例的水冷式空调的方块图;以及
图3是说明用于控制根据本发明的实施例的水冷式空调的方法的流程图。
具体实施方式
现在将详细参考本发明的实施例,本发明的实例在附图中说明,其中全文相同的参考符号表示相同的元件。以下将通过参照附图描述实施例以说明本发明。
如图1所示,根据本发明的实施例的水冷式空调包括室外单元10、加热系统34和热生活用水供给系统37、以及用于将室外单元10连接到加热系统34和热生活用水供给系统37的供给管32和排出管31。
将加热系统34和热生活用水供给系统37的水抽吸到室外单元10的循环泵41安装在供给管32中,并且测量从室外单元10流到加热系统34和热生活用水供给系统37的水的温度的水温传感器33安装在排出管31中。
室外单元10包括:压缩气相制冷剂的压缩机11;冷凝器12,冷凝器12实现从压缩机11发送的气相制冷剂与从加热系统34和热生活用水供给系统37流出的水之间的热交换,以便使制冷剂从气相转换成液相;和使液相制冷剂转换成气-液混合相制冷剂的第二电动膨胀阀22。
室外单元10进一步包括:气-液分离器13,气-液分离器13使通过第二电动阀22获得的气-液混合相制冷剂分离成气相制冷剂和液相制冷剂;第一电动膨胀阀14,第一电动膨胀阀14通过减压使从气-液分离器13排出的液相制冷剂膨胀;蒸发器15,蒸发器15实现从第一电动膨胀阀14发送的液相制冷剂和室外空气之间的热交换,以便将液相制冷剂转换成气相制冷剂;以及将空气吹送到蒸发器15的蒸发器风扇16。
使气相制冷剂从气-液分离器13供给到压缩机11的喷射管21连接在气-液分离器13和压缩机11之间,并且喷射阀20安装在喷射管21中。喷射管21连接到压缩机11的压缩室(未显示)或压缩机11的吸入管。通过喷射管21从气-液分离器13流到压缩机11的制冷剂具有比从蒸发器15吸入到压缩机11的制冷剂的压力高的压力,并因此具有比从蒸发器15吸入到压缩机11的制冷剂的质量更大的质量。
加热系统34包括构造在室内空间的地板或墙壁上的加热管35、和用于使水可以从冷凝器12流到加热管35或阻挡水的加热阀36。热生活用水供给系统37包括用于存储水的热生活用水供给桶38、和用于使水流至热生活用水供给桶38或阻挡水的热生活用水供给阀39。热生活用水供给桶38连接到排出管31和供给管32。因此,通过冷凝器12的水经由排出管31供给到热生活用水供给桶38,而存储在热生活用水供给桶38中的水通过供给管32流至冷凝器12。热生活用水供给桶38可以不直接连接到排出管31和供给管32,而使热生活用水沿其流动的管子可安装在热生活用水供给桶38中,以便加热热生活用水供给桶38中的水。
除图1示出的部件外,如图2所示,根据本发明的实施例的水冷式空调可进一步包括:具有用于使用户可以输入加热指令的加热按钮(未显示)的输入单元43;用于设定加热温度的加热温度刻度盘(未显示);和用于使用户可以输入热生活用水供给指令的热生活用水供给按钮(未显示);用于测量室内温度的室内温度传感器44;和用于控制诸如水冷式空调的第二电动膨胀阀22、喷射阀20等部件的操作的微型计算机42。
以下,将参照图3说明一种用于控制根据本发明的实施例的水冷式空调的方法。
当室外空气温度降低并因此需要加热室内空间时,用户通过按输入单元43的加热按钮输入加热指令并通过转动加热温度刻度表设定目标温度。另外,当需要热生活用水的供给时,用户通过按输入单元43的热生活用水供给按钮输入热生活用水供给指令(S50)。
当输入加热或热生活用水供给指令时,微型计算机42打开加热阀36或热生活用水供给阀39(S52)。然后,微型计算机42操作压缩机11和循环泵41(S54)。这里,微型计算机42使第二电动膨胀阀22完全打开以便不影响制冷剂的状态,以及关闭喷射阀20以防止气相制冷剂从气-液分离器13被发送到压缩机11。
当压缩机11操作时,从压缩机11排出的制冷剂与冷凝器12中的水进行热交换,因此被冷凝成液相。然后,液相制冷剂通过在第一电动膨胀阀14中减压而膨胀,并被发送到蒸发器15。随后,制冷剂在蒸发器15中与室外空气进行热交换,因此转换为气相。
当循环泵41在加热阀36或热生活用水供给阀39打开的情况下操作时,加热管35或热生活用水供给桶38中的水通过供给管32、冷凝器12和排出管31,并循环到加热管35或水供给桶38。由此,流动到加热管35或热生活用水供给桶38的水的温度逐渐升高。
当操作压缩机11时,微型计算机42判定是否满足加热负载或热生活用水供给负载(S56)。当室内温度达到用户设定的目标温度时,微型计算机42判定满足加热负载。因此,微型计算机42比较通过室内温度传感器44感应的室内温度和目标温度,并从比较的结果判定是否满足加热负载。另外,当用户通过再次按热生活用水供给按钮撤销热生活用水供给指令时,微型计算机42判定满足热生活用水供给负载。
当满足加热负载或热生活用水供给负载时,终止该方法的循环。另一方面,当没有满足加热负载或热生活用水供给负载时,微型计算机42判定通过水温传感器33感应的水温(即,从冷凝器12流到加热管35或热生活用水供水桶38的水的温度)是否低于基准温度(S58)。这里,基准温度是可以正常执行加热和热生活用水供给的最低温度(例如,65℃的温度),并且优选是通过水冷式空调制造商执行的各种试验来设定适当的基准温度。
作为判定的结果,当流到加热管35或热生活用水供水桶38的水的温度不低于基准温度时,微型计算机42判定可以正常执行加热或热生活用水供给操作,并因此循环返回步骤S56。另一方面,当流动到加热管35或热生活用水供水桶38的水的温度低于基准温度时,微型计算机42判定不能正常执行加热或热生活用水供给操作,因此降低第二电动膨胀阀22的打开程度并打开喷射阀20(S60)。
尽管压缩机11正常操作以将气相制冷剂发送到冷凝器12,但是与冷凝器12中的制冷剂进行热交换并流到加热管35或热生活用水供给桶38的水的温度也无法达到基准温度的原因在于,过低的室外空气温度减少了制冷剂流中的制冷剂的质量,并因此减少在冷凝器12中流动的制冷剂的量,使得降低了冷凝器12的热交换容量。
当减小第二电动膨胀阀22的打开程度时,从冷凝器12排出的液相制冷剂的一部分被转换成气相,然后气-液混合相制冷剂流到气-液分离器13中。这里,第二电动膨胀阀22的打开程度可以根据室外空气温度设定成不同值,或设定成特定值(例如,40%),并优选通过水冷式空调制造商执行的适当试验设定第二电动膨胀阀22的打开程度。
气-液分离器13将气-液混合相制冷剂分离成气相和液相。然后,液相制冷剂通过在第一电动膨胀阀14中减压而膨胀,并被发送到蒸发器15。另外,气相制冷剂通过喷射管21,并发送到压缩室或压缩机11的吸入管。从气-液分离器13直接发送到压缩机11的气相制冷剂具有比从蒸发器15发送到压缩机11的气相制冷剂的压力更高的压力,并因此具有比从蒸发器15发送到压缩机11的气相制冷剂的质量更大的质量。
因此,从压缩机11发送到冷凝器12的制冷剂的量增加,并且当喷射阀20打开时的冷凝器12的热交换容量高于喷射阀20关闭时的冷凝器12的热交换容量。因此,从冷凝器12流到加热管35或热生活用水供给桶38的水的温度进一步升高。
在喷射管21没有连接到压缩机11的压缩室而是连接到压缩机11的吸入管的情况下,与传统水冷式空调相比,增加了压缩机11入口侧的压力。然后,尽管增加压缩机11出口侧的压力以便使流到加热管35或热生活用水供给桶38的水的温度增高,然而与传统的水冷式空调相比,压缩机11却可以以低压缩比进行操作,因此不会缩短压缩机11的使用寿命。因此,可以采用一种用于在室外空气温度较低时增加压缩机11的出口侧压力以便使流到加热管35或热生活用水供给桶38的水的温度升高的方法。
从上述说明明显看出,本发明提供一种水冷式空调及其控制方法,其中即使在非常寒冷的区域也可以正常实现室内空间的加热或热生活用水的供给。
另外,在本发明的水冷式空调及用于控制所述空调的方法中,即使当室外空气温度较低时,压缩机在正常实现室内空间的加热或热生活用水的供给的同时也不会过载。
尽管已经示出并说了本发明的实施例,然而本领域普通技术人员将认识到的是,在不背离本发明的原理和精神的前提下可以对这些实施例进行变更,本发明的范围由权利要求及其等效形式所限定。
Claims (7)
1.一种用于控制水冷式空调的方法,包括步骤:
判定用于实现水和制冷剂之间的热交换、通过冷凝器供给到加热系统或热生活用水供给系统的水的温度是否低于基准温度;以及
当判定所述水的温度低于所述基准温度时,将通过所述冷凝器冷凝的一部分制冷剂转换成气相,并在没有通过蒸发器的情况下,将所述气相制冷剂发送到压缩机。
2.根据权利要求1所述的方法,其中通过调节安装在所述冷凝器和所述蒸发器之间的电动膨胀阀的打开程度使通过所述冷凝器冷凝的所述一部分制冷剂转换成气相。
3.根据权利要求2所述的方法,其中所述气相制冷剂通过打开安装在连接气-液分离器和所述压缩机的喷射管中的喷射阀、被发送到所述压缩机,所述气-液分离器安装在所述电动膨胀阀与所述蒸发器之间。
4.一种水冷式空调,包括:
压缩机,所述压缩机用于压缩通过与室外空气在蒸发器中进行热交换而蒸发的制冷剂;
冷凝器,所述冷凝器用于通过与水进行热交换使从所述压缩机排出的制冷剂冷凝成液相;
加热或热生活用水供给系统,所述加热或热生活用水供给系统利用通过所述冷凝器被加热的水;
第二电动膨胀阀,所述第二电动膨胀阀用于使从所述冷凝器排出的液相制冷剂转换成气-液混合相制冷剂;
气-液分离器,所述气-液分离器用于使气-液混合相制冷剂分离成气相制冷剂和液相制冷剂;
第一电动膨胀阀,所述第一电动膨胀阀用于通过减压使从所述气-液分离器排出的液相制冷剂膨胀并将所述制冷剂发送到所述蒸发器;以及
喷射阀,所述喷射阀安装在喷射管中,所述喷射管用于将从所述气-液分离器排出的气相制冷剂发送到所述压缩机。
5.根据权利要求4所述的水冷式空调,其中所述喷射管连接到所述压缩机的压缩室或所述压缩机的吸入管。
6.根据权利要求4所述的水冷式空调,进一步包括:
水温传感器,所述水温传感器用于测量通过所述冷凝器供给到所述加热或热生活用水供给系统的水的温度;以及
微型计算机,所述微型计算机用于当通过所述水温传感器测量的水温低于基准温度时打开所述喷射阀,以便将气相制冷剂发送到所述压缩机。
7.根据权利要求4所述的水冷式空调,其中所述冷凝器和所述蒸发器安装在室外单元中,并且所述加热系统安装在室内空间中。
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CN102401450A (zh) * | 2010-09-08 | 2012-04-04 | 三星电子株式会社 | 空调及其控制方法 |
CN104296245A (zh) * | 2008-12-03 | 2015-01-21 | 三星电子株式会社 | 空调机及其控制方法 |
CN105318606A (zh) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | 一种空调器室内机、室外机及空调器 |
CN105890224A (zh) * | 2014-11-02 | 2016-08-24 | 詹平治 | 压缩冷/热水采暖采冷集成器 |
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EP2423605A1 (en) * | 2010-08-24 | 2012-02-29 | C.P. Comercial Prestcold, S.A. | Combined cold, heat and domestic hot water (DHW) climatization system |
CN105972852A (zh) * | 2016-07-08 | 2016-09-28 | 广东美的制冷设备有限公司 | 空调系统 |
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EP1589301B1 (en) * | 2000-03-15 | 2017-06-14 | Denso Corporation | Ejector cycle system with critical refrigerant pressure |
JP3835141B2 (ja) * | 2000-09-01 | 2006-10-18 | 株式会社デンソー | ヒートポンプ |
US6474087B1 (en) * | 2001-10-03 | 2002-11-05 | Carrier Corporation | Method and apparatus for the control of economizer circuit flow for optimum performance |
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CN104296245A (zh) * | 2008-12-03 | 2015-01-21 | 三星电子株式会社 | 空调机及其控制方法 |
CN102401450A (zh) * | 2010-09-08 | 2012-04-04 | 三星电子株式会社 | 空调及其控制方法 |
CN102401450B (zh) * | 2010-09-08 | 2016-03-30 | 三星电子株式会社 | 空调及其控制方法 |
CN105318606A (zh) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | 一种空调器室内机、室外机及空调器 |
CN105890224A (zh) * | 2014-11-02 | 2016-08-24 | 詹平治 | 压缩冷/热水采暖采冷集成器 |
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