CN1116292A - 空调器 - Google Patents
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- CN1116292A CN1116292A CN95101418A CN95101418A CN1116292A CN 1116292 A CN1116292 A CN 1116292A CN 95101418 A CN95101418 A CN 95101418A CN 95101418 A CN95101418 A CN 95101418A CN 1116292 A CN1116292 A CN 1116292A
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- 238000004378 air conditioning Methods 0.000 claims abstract description 6
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- 238000001816 cooling Methods 0.000 claims description 10
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- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 7
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Abstract
一种空调器,不用室外温度传感器就能求出室外温度,它备有输出驱动压缩机1用的电力变换器电路41及使温度为To的室外空气通过室外热交换器循环的室外变速风扇6,根据空调负载控制变换器电路41的输出频率F及室外风扇6的速度,设有检测室外热交换器3的温度Te用的传感器11,根据Te、F及室外风扇6的速度推断室外温度。
Description
本发明涉及具有推断室外温度功能的空调器。
有的空调器备有检测室外温度用的室外温度传感器,根据该室外温度传感器检测到的温度进行例如室外风扇的速度控制、变换器电流的断路控制、设定室内温度的修正控制。
室外温度传感器通常安装在室外机组中,但安装时必须考虑不要使室外温度传感器受到日照或室外热交换器辐射热的影响。
室外温度传感器是否会受到日照的影响,多半取决于室外机组的设置状况,因此安装位置的选择就很困难。结果可能避免不了日照的影响,不能准确地检测室外温度,从而可能造成运转控制方面的故障。
虽然可以考虑由作业人员根据安装情况适当选定室外温度传感器的安装位置,但这样做对作业人员来说很麻烦,而且有可能造成安装错误。
本发明考虑到了上述情况,其目的是提供这样一种空调器,该空调器不使用室外温度传感器就能得知室外温度,因此就不存在与室外温度传感器有关的安装位置难以选定的问题,另外也不会受日照等不良影响,还能减轻安装时的作业人员的负担,并能降低成本,是一种可靠性高的可检测室外温度的空调器。
本发明的空调器备有连接着可变功率压缩机、室外热交换器、减压器及室内热交换器的制冷循环系统、使室外空气通过室外热交换器进行循环的可变速的室外风扇、检测室外热交换的温度的温度传感器、以及根据该温度传感器的检测温度、可变功率压缩机的功率及室外风扇的速度来推断室外温度的推断装置。
图1是本发明的一个实施例中的控制电路框图。
图2是该实施例中的制冷循环系统的结构图。
图3是该实施例中的热交换器温度与室外温度的关系特性曲线图。
图4是该实施例中的推断室外温度用的制冷时室外风扇电机的M抽头表的格式。
图5是该实施例中推断室外温度用的供暖时室外风扇电机的M抽头表的格式。
图6是该实施例中推断室外温度用的供暖时室外风扇电机的H抽头表的格式。
图7是说明该实施例的作用的流程图。
图8是该实施例中的热交换器温度与推断值的关系曲线图。
图9是该实施例中求得的室外温度的变化曲线图。
图中1:可变功率压缩机
3:室外热交换器
5:室内热交换器
6:室外风扇
11:热交换器温度传感器
12:室内温度传感器
20:室内控制部分
40:室外控制部分
41:变换器电路
下面参照附图说明本发明的第1个实施例。
如图2所示,室外机组A和室内机组B被连接成热泵式制冷循环系统。
1是可变功率压缩机,该压缩机1的排出口通过四通阀2与室外热交换器3连接。该室外热交换器3通过作为减压器用的膨胀阀4与室内热交换器5连接。该室内热交换器5通过四通阀2与压缩机1的吸入口连接。
室外变速风扇6设在室外热交换器3的附近。室外风扇6使室外空气通过室外热交换器3进行循环。室内风扇7设在室内热交换器5的附近。室内风扇7使室内空气通过室内热交换器5进行循环。
检测室外热交换器3的温度Te用的热交换器温度传感器11安装在室外热交换器3上。检测室内空气的温度Ta用的室内温度传感器12设置在由室内风扇7形成的室内空气吸入风道上。
图1示出了控制电路。
室内机组B的室内控制部分20连接在商用交流电源30上。而且,室外机组A的室外控制部分40通过电源线ACL和串行信号线SL与室内控制部分20连接。
室内控制部分20由微机及其外设电路构成。光接收部分21、室内风扇电机7M及室内温度传感器12连接在该室内控制部分20上。光信号接收部分21接收从遥控式操作器(以下简称遥控器)22发出的红外光信号。
室外控制部分40由微机及其外设电路构成。四通阀2、热交换器温度传感器11、变换器电路41及抽头切换电路42连接在该室外控制部分40上。而且室外风扇电机6M连接在抽头切换电路42上。
变换器电路41对电源线ACL中的电压整流后变换成与室外控制部分40的指令相对应的规定频率(及电平)的电压,并输出。该输出电压成为压缩机电机1M的驱动电力。室外风扇电机6M有高速抽头“H”,中速抽头“M”及低速抽头“L”。由抽头切换电路42对这些抽头进行选择通电。
另一方面,如图3所示,室外热交换器3的温度Te和室外温度To之间存在以变换器电路41的输出频率F为参量的比例关系。另外,这个关系受室外风扇6的速度的影响。针对这种温度特性,将推断室外温度用的数据表存储在室外控制部分40内的存储器中。
该表如图4所示,它是按照热交换器温度Te和输出频率F的对应关系预先将推断室外温度用的温度数据进行登记的表,准备了与冷/暖运转状态及室外风扇6的速度相对应的多种数据。
图4中的表与制冷运转状态相对应,而且与室外风扇6的高速抽头“H”,中速抽头“M”,以及低速抽头“L”一一对应。此外,还准备了图5所示的表,它与供暖运转状态相对应,而且与室外风扇6的中速抽头“M”及低速抽头“L”相对应。另外还准备了图6所示的表,它与供暖运转状态对应,而且与室外风扇6的高速抽头“H”相对应。
室内控制部分20及室外控制部分40通过串行信号线SL,一边互相传送电源电压同步数据,一边控制该空调器,因此这两个控制部分主要备有下列功能的设备:
(1)使压缩机1排出的制冷剂沿图2所示的实线箭头的方向流动,因此形成制冷循环,使室外热交换器3起冷凝器的作用,使室内热交换器5起蒸发器的作用,进行制冷运转或干燥运转(=弱冷运转)的设备。
(2)通过四通阀2的切换,使压缩机1排出的制冷剂沿图2所示的虚线箭头的方向流动,因此形成供暖循环,使室内热交换器5起冷凝器的作用,使室外热交换器3起蒸发器的作用,进行供暖运转的设备。
(3)供暖时,如果热交换器温度传感器11的检测温度在规定值以下,例如0℃以下时,使四通阀2切换,对室外热交换器3进行除霜运转的设备。
(4)制冷及供暖时,求出室内温度传感器12的检测温度Ta与遥控器设定温度Ts之差ΔT作为空调负载,并根据该温度差ΔT控制变换器电路41的输出频率(压缩机1的运转频率)F的设备。
(5)根据变换器电路41的输出频率F,控制室外风扇6的速度(速度抽头“H”、“M”、“L”)的设备。
(6)从存储在室外控制部分40内的存储器中的表中选定与室外风扇6的速度相对应的一个数据的选择设备。
(7)从所选的表格中选定与热交换器温度传感器11的检测温度Te及变换器电路41的输出频率F相对应的一个数据格,并从此格中读出推断室外温度用的温度数据f(X)的读出设备。
(8)在运转开始后的规定时间t1(例如60秒)内,将运转开始时的热交换器温度传感器11的检测温度Te直接作为室外温度To推断的第1推断设备。
(9)在运转开始后的规定时间t1(例如60秒)以后,用上述读出的室外温度推断用温度数据f(X)对热交换器温度传感11的检测温度Te进行修正,推断室外温度的第2推断设备。
(10)在运转停止后的规定时间(例如10分钟)内保存在运转停止前推断的室外温度保存设备。
(11)运转开始(重新开始)时,如果室外温度仍在上述保存设备中保存时,则将此保存室外温度优先于上述推断值读入的设备。
(12)根据室内温度控制信号中断运转(断开采暖)时,每隔一定时间,将热交换器温度传感器11的检测温度Te作为室外温度优先于上述推断温度读入的设备。
(13)用推断或读入的室外温度To控制运转的控制设备。
下面参照图7中的流程,说明上述结构的作用。
用遥控器操作运转开始时(步101,是),如果运转已经停止了10分钟以上(步骤102,是),抹掉从上次运转继续下来的室外温度To的保留存储(步103)。
读入热交换器温度传感器11的检测温度Te(步104),将它直接作为室外温度To存储到室外控制部分40内的存储器中(步105)。同时,开始ta计时(步106)。关于从上次运转继续下来的室外温度To的保留存储问题,留待以后说明。
压缩机1起动(步107),排出制冷剂。如果是制冷运转状态,排出的制冷剂经过四通阀2、室外热交换器3、膨胀阀4、室内热交换器5、四通阀2、返回压缩机1,形成制冷循环。因此,室外热交换器3起冷凝器的作用,室内热交换器5起蒸发器的作用,室内被降温。在供暖运转状态下,四通阀2被切换,排出的制冷剂通过四通阀2、室内热交换器5、膨胀阀4、室外热交换器3、四通阀2、返回压缩机1,形成供暖循环。因此室内热交换器5起冷凝器的作用,室外热交换器3起蒸发器的作用,室内升温。
读入室内温度传感器12的检测温度Ta(步108),求出该温度与由遥控器22设定的温度Ts之差ΔT(=Ta—Ts)作为空调负载(步109)。设定与该温度差ΔT的值相对应的变换器电路41的输出频率(压缩机1的运转频率)F(步110),从而控制压缩机1的功率。同时,如果运转频率F值大,则对室外风扇6的速度按正比进行控制,速度就高。
在运转过程中,根据存储器内的室外温度To进行着各种控制。例如,当室外温度高于规定值时,为了避免变换器电路41的异常温升,便进行电流断路控制。为了使室内舒适,根据室外温度To修正设定温度Ts。
计时ta达到规定时间t1后(步115,是),逐次读入热交换器温度传感器11的检测温度Te(步116),从存储在室外控制部分40内的存储器中的各种表格中选定与冷/暖运转状态及室外风扇6的速度相对应的一个数据,并读出(步117)。
例如制冷时,读出室外风扇6的全部速度抽头通用的图4中的制冷M抽头表。供暖时,如果室外风扇6用中速度抽头“M”或低速抽头“L”运转时,则读出图5中的供暖M抽头表。另外,供暖时,如果室外风扇6用高速抽头“H”运转时,便读出图6中的供暖H抽头表。
从读出的表格中选定与热交换器温度传感器11的检测温度Te及变换器电路41的输出频率F相对应的一栏,从中读出推断室外温度用的温度数据f(X)(步118)。
推断室外温度用的温度数据f(X)是热交换器温度Te及输出频率F的函数。例如,热交换器温度Te为30℃,输出频率F为25Hz时,读出数据值“-5.5”,以此作为推断室外温度用的温度数据f(X)。热交换器温度Te为40℃、输出频率F为30Hz时,读出数值“-6.0”,以此作为推断室外温度的温度数据f(X)。
读出推断室外温度用的温度数据f(X)后,用该数据和热交换器温度Te进行下式运算,求出室外温度的推断值To(步119)。
T01=Te+f(X)
如果从上次运转停止后已经经过了10分钟以上(步120,是),则用上述求得的推断值T01作为室外温度To,刷新室外控制部分40内的存储器中存储的数据(步121)。以后,根据存储的室外温度To进行上述的电流断路控制或修正设定温度。
图8表示热交换器温度Te与推断值To之间的关系,起动时,由于运转不稳定,所以图8中的比例关系不成立,推断值T01与实际的室外温度相差很大,但起动后不久运转便达到稳定状态,图8中的比例关系成立,可知推断值T01就在实际的室外温度附近。
因此,在起动后的一段规定时间t1内,将在与室外温度大致相等的状态下开始运转时的热交换器温度Te直接作为室外温度To用。而且在规定时间t1以后,将推断值T01作为室外温度To。这样求得的室外温度To如图9所示,是一个与实际的室外温度大致相等的稳定值。
如果制冷或供暖时空调负载为零,则设定运转频率F为零,压缩机1停止,运转中断(步113)。在这种所谓断热而导致运转中断时(步113,是),中断时间拖长,经过不受制冷循环温度影响的时间(例如10分钟)后,热交换器温度Te变得与室外温度To相同,每隔一定时间例如10分钟,将热交换器温度Te作为室外温度To刷新存储数据(步114)。即,由于运转中断时的确不能进行推断,所以将其优先于推断值,读入热交换器温度Te。
用遥控器22进行运转停止操作后(步112,是),压缩机1停止(步22)。而且所存储的停止前推断的室外温度To在运转停止后继续保留(步123),同时开始计时tb(步124)。
此后,用遥控器22进行开始运转操作时(步101,是),如果计时tb还未到10分钟(步102,否),从上次运转保留下来的室外温度To的存储数据继续保留(步125)。
运转停止后立刻再开始运转时,由于热交换器温度Te与室外温度To之间存在偏差,因此将热交换器温度Te直接作为室外温度To读入则不够理想。因此从上次运转停止后经过10分钟再开始运转时,将在上次运转中得到的推断值优先于本次运转中的推断值进行读入。这种方法能比较准确地获得室外温度To。
这样,由于能根据热交换器温度Te获得室外温度To,因此不需要室外温度传感器。所以也就不存在与室外温度传感器有关的安装位置难以选定的问题,另外也没有日照等的不良影响,安装时还能减轻作业负担,能进行可靠性高的室外温度检测。
而且,热交换器温度传感器11本来就是作为供暖时检测结霜而设置的,将它兼作室外温度检测之用,所以不用增加零件,再加上不用设置室外温度传感器,因此能够降低成本。
在上述实施例中是采用了3个表,但可以根据压缩机容量或室外风扇的风量等适当地设定表的数量。
另外,室外风扇6的速度是通过切换抽头来改变的,但也可以通过对室外风扇电机6M(交流电机)进行通电位相控制的方法改变速度,或者采用直流电机作为室外风扇电机6M,而且设置变换器电路用来驱动直流电机,通过控制该变换器电路的输出频率来改变速度。
此外,本发明不限于上述实施例,在要旨不变的范围内可以进行各种变化。
如上所述,如果采用本发明,由于根据室外热交换器的温度、可变功率压缩机的功率及室外风扇的速度推断室外温度,因此不用室外温度传感器就能获得室外温度,所以不存在涉及到室外温度传感器的安装位置难以选择的问题,也不会受到日照等的不良影响,还能减轻安装时的作业负担,能提供一种既能降低成本,又能进行可靠性高的室外温度检测的空调器。
Claims (8)
1.一种空调器,其特征为:备有通过连接可变功率压缩机、室外热交换器、减压器及室内热交换器形成的制冷循环系统;使室外空气通过室外热交换器进行循环的室外变速风扇;检测室外热交换器温度的温度传感器;以及根据该温度传感器的检测温度、上述压缩机的功率及室外风扇的速度,推断室外温度的推断设备。
2.根据权利要求1所述的空调器,其特征为:在上述可变功率压缩机上具备有变换器的变速驱动部分,根据该变换器的输出频率,变更压缩机的功率。
3.根据权利要求2所述的空调器,其特征为:备有根据空调负载,控制变换器的输出频率及室外风扇的速度的控制设备。
4.根据权利要求1、2、3中任意一项所述的空调器,其特征为:上述推断部件有存储设备,用来储存根据室外风扇的速度、室外热交换器的温度和变换器的输出频率的组合预先设定的多个室外温度推断数据,且根据室外风扇的速度、变换器的输出频率及温度传感器的检测温度,选定一个推断室外温度的温度数据。
5.根据权利要求4所述的空调器,其特征为:上述制冷循环系统是一种制冷/供暖可变型系统,即在制冷运转状态下,使室外热交换器起冷凝器的作用,室内热交换器起蒸发器的作用,在供暖运转状态下,使室外热交换器起蒸发器的作用,室内热交换器起冷凝器的作用,上述推断室外温度用的温度数据根据制冷运转状态和供暖运转状态分别设定。
6.根据权利要求1所述的空调器,其特征为:上述推断部件在运转开始后的规定时间内,将温度传感器的检测温度作为推断的室外温度输出以此取代由该推断部件进行的室外温度推断。
7.根据权利要求1所述的空调器,其特征为:设有保留由温度传感器检测的运转停止时的检测温度的保留设备,以及使运转开始时在保留设备中所保留的检测温度优先于由推断设备求出的推断室外温度的优先设备。
8.根据权利要求1所述的空调器,其特征为:有运转停止后每隔规定的时间使温度传感器动作、并使测到的检测温度优先于由推断部件求出的推断室外温度的优先设备。
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- 1994-12-07 TW TW083111390A patent/TW255951B/zh active
- 1994-12-28 KR KR1019940040708A patent/KR0150812B1/ko not_active IP Right Cessation
-
1995
- 1995-01-16 CN CN95101418A patent/CN1129742C/zh not_active Expired - Lifetime
- 1995-04-07 GB GB9507227A patent/GB2289124B/en not_active Expired - Fee Related
- 1995-04-12 US US08/420,776 patent/US5568732A/en not_active Expired - Lifetime
Cited By (7)
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CN101240933B (zh) * | 2007-02-06 | 2010-06-30 | 三星电子株式会社 | 多系统空调及用于控制所述多系统空调的方法 |
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CN105745504A (zh) * | 2013-11-28 | 2016-07-06 | 能泰有限公司 | 热交换器故障诊断 |
CN113531774A (zh) * | 2021-07-13 | 2021-10-22 | 珠海拓芯科技有限公司 | 空调外环温度计算方法、装置、空调器、计算机存储介质 |
CN113606760A (zh) * | 2021-07-28 | 2021-11-05 | 珠海格力电器股份有限公司 | 温度调节设备控制方法、装置、电子设备及存储介质 |
CN113606760B (zh) * | 2021-07-28 | 2022-07-12 | 珠海格力电器股份有限公司 | 温度调节设备控制方法、装置、电子设备及存储介质 |
CN115183410A (zh) * | 2022-07-29 | 2022-10-14 | 宁波奥克斯电气股份有限公司 | 空调控制方法、装置、空调器及存储介质 |
Also Published As
Publication number | Publication date |
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CN1129742C (zh) | 2003-12-03 |
GB2289124B (en) | 1998-02-25 |
GB9507227D0 (en) | 1995-05-31 |
KR0150812B1 (ko) | 1998-11-02 |
GB2289124A (en) | 1995-11-08 |
JPH07280327A (ja) | 1995-10-27 |
US5568732A (en) | 1996-10-29 |
JP3476899B2 (ja) | 2003-12-10 |
KR950029697A (ko) | 1995-11-24 |
TW255951B (en) | 1995-09-01 |
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