CN1910407B - 多区域供暖、通风与空调系统中的持续风扇控制 - Google Patents
多区域供暖、通风与空调系统中的持续风扇控制 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
- F24F11/523—Indication arrangements, e.g. displays for displaying temperature data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
- F24F3/0442—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- 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
Abstract
多区域HVAC系统包括用于独立确定输送至HVAC系统内各区域的气流量的控制装置。所述控制装置基于用户选择的风扇气流的量级和HVAC系统内各区域的相对尺寸来确定各区域的标称区域气流和持续风扇气流的量级。一旦各区域的持续风扇气流的量级确定,所述控制装置就确定整个系统的期望的系统气流。所述HVAC系统提供持续风扇气流至各区域,该持续风扇气流与输送至任何其他区域的持续风扇气流无关,且不考虑区域的相对尺寸差异。
Description
本申请要求2004年1月20日提出的、标题为“Continuous FanControl in a Multi-Zone HVAC System”的、序号为No.60/537,526的美国临时专利申请的优先权。
技术领域
本申请涉及用于输送至多区域供暖、通风与空调(HVAC)系统中若干区域的各区域的持续风扇气流的方法和控制装置,具体涉及允许特定的持续风扇气流同时被输送至系统的所有区域的控制装置。
背景技术
传统的多区域HVAC系统包括用于改变温度和空气状况的温度变换部件。室内空气输送器驱使空气从温度变换部件通过送风管道到达楼宇内的若干区域。各送风管道通常会有一些风门,所述风门选择性地限制进入各区域的气流以达到所期望的温度。
传统的系统已经提供了在风扇“开启”和风扇“自动”操作之间设置选择的持续风扇功能。持续操作风扇是有利的,因为空气循环使温度均衡并通过允许系统过滤器和其他空气质量装置持续地净化空气来改善空气质量。然而,由于能量和噪声问题,某些用户可能不愿意将系统维持在风扇“开启”设置上让系统持续工作。
多区域HAVC系统提出了关于持续风扇操作的另外一些课题。对应于空气循环、能量、噪声和尺寸等理由,各区域可要求不同的持续风扇速度。某些分区的HVAC系统在恒温器处为各区域识别风扇“开启”设置并朝向这些区域打开风门,同时以固定速度运行系统风扇。其不利之处在于,输送至各区域的风扇气流是不可调节的,并且输送至各区域的气流依赖于输送至其他区域的气流。例如,在具有两个区域而且两个区域的管道分段相同、两个区域均将风扇设置为“开启”的系统中,每一区域将接受系统气流的一半。然而,如果只有区域1使风扇设为“开启”,则区域2的风门将关闭。于是,区域1将接受全部的系统气流,这将导致两倍于先前量的气流量。在管道尺寸各不相同的多区域情况下,输送至任何区域的持续风扇气流的变化可能相当大,这可导致不平衡的温度变化。
因此,最好能提供多区域HVAC系统,该系统将持续风扇气流输送至各区域,该持续风扇气流与输送至任何其他区域的持续风扇气流无关且不考虑区域的相对尺寸差异。
发明内容
本发明的HVAC系统提供了一种可确定HVAC系统内输送至各区域的气流量的控制装置,该气流量与输送至其他区域的气流量无关。
控制装置确定标称系统气流和HVAC系统内各区域的相对区域尺寸。控制装置根据标称系统气流和HVAC系统内各区域的相对尺寸来确定输送至各区域的标称区域气流。输送至各区域的期望的持续风扇气流是以指定给各特定区域的用户选择的风扇气流量级的比例常数为基础的。一旦确定了各区域期望的持续风扇气流,就可由每个区域期望的持续风扇气流的总和来确定期望的系统气流。控制装置将与各区域相关联的风门打开至与由用户选择的风扇气流量级确定的比例常数相对应的位置,接着所期望的系统气流就被输送至HVAC系统内的各个区域。
本发明的多区域HVAC系统可提供持续风扇气流至各区域,该持续风扇气流与输送至任何其他区域的持续风扇气流无关且不考虑区域的相对尺寸差异。
附图说明
通过下面对当前优选实施例的详细描述,本发明的这些特征和优点对本领域的技术人员来说将是显而易见的。下面简要说明伴随详细描述的附图:
图1是楼宇HVAC系统的示意图。
图2示出的是用户界面的示范显示画面。
图3是本发明方法的流程图。
图4是由本发明的HVAC系统实施的持续风扇控制的示意图。
具体实施方式
图1示意说明了多区域HVAC系统20。温度变换部件22同室内空气输送器24连通。温度变换部件22改变空气状况并且通常包括室内单元(如暖气炉/加热器盘管)和/或室外单元(冷凝器/热泵)。
与室内空气输送器24相联的是强制通风系统31。送风管道28、30和32在强制通风系统31和不同区域1、2和3之间延伸。风门34a、34b和34c分别位于每一送风管道28、30和32内。区域控制器38a、38b和38c(图2示出的一个)分别与不同区域1、2和3相关联。
系统控制装置36与各区域控制器38a、38b和38c的通信。系统控制装置36优选微处理器等。
区域控制器38a、38b和38c允许用户分别为各区域1、2和3设置期望的温度、气流等。区域控制器38a、38b和38c最好包含温度传感器,用于将实际的温度返回给系统控制装置36。系统控制装置36操作风门34、温度变换部件22、室内空气输送器24并且还与位于各区域1、2和3的区域控制器38a、38b和38c通信。
当用户在区域控制器38a、38b和38c处输入期望的温度和气流等时,数据被传递至系统控制装置36,系统控制装置36识别用户选择的标准并与温度变换部件22通信从而改变由室内空气输送器24提供的空气状况。应当理解,用户可通过单个区域控制器38a、38b或38c为HVAC系统内的任何区域输入风扇气流量级。室内空气输送器24传递来自回流管道的空气,调节空气,并将经调节的空气推入强制通风系统31。空气从强制通风系统31进入与不同区域1、2和3相联的送风管道28、30和32。
被传递至区域1、2和3的各区域的被调节气流由位于送风管道28、30和32的各管道内的风门34a、34b和34c的位置来控制。可选择性打开或关闭风门34a、34b和34c以限制或允许额外的气流进入区域1、2和3。最好,风门34a、34b和34c可置于完全打开和完全关闭位置之间的增量位置处。
一旦空气进入区域1、2和3并在其中流通,空气就会进入回流管道26,空气在该处被过滤,并且在系统控制装置36要求时再次通过室内空气输送器24。
图3以流程图的形式说明存储在系统控制装置36内、用来确定HVAC系统的各区域内期望的持续风扇气流量的计算过程。首先,在步骤A处,确定标称系统气流(Anomsys)。Anomsys表示在供冷或供暖操作模式(无论哪个更高)下打开所有区域风门34a、34b与34c时名义上由室内空气输送器24输送至各区域的总系统气流。
上述系统确定与系统中各区域相关联的管道分段的相对尺寸,这在步骤B示出。为了进一步理解与HVAC系统中的区域相关联的管道分段的尺寸确定,可参阅2004年9月1日提出的、序号为No.10/932,179、标题为“Method and System for Determining RelativeDuct Sizes by Zone in an HVAC System”的同时待审的美国专利申请,其全部内容通过引用而结合于本文。这里所公开的算法涉及与不同区域1、2和3相联的送风管道28、30和32的尺寸确定,以使在风门34a、34b与34c完全打开、空气输送器24输送任何系统气流时,各区域1、2和3按区域的管道分段尺寸相对于所有区域管道分段的组合尺寸的比例来接受气流量。
在步骤C处,标称系统气流(Anomsys)值和相关管道尺寸(Si)信息被用来计算标称区域气流(Anomi)值。区域i的标称区域气流代表基于各区域i相对于区域总数(区域1、2和3)的组合尺寸的相对尺寸的标称系统气流(Anomsys)的区域i的部分。Anomi通过下列公式计算:
Anomi=Anomsys*Si (1)
在步骤D处,根据用户选择的风扇气流量级为各区域1、2和3选择比例常数(Pi)。在一个实施例中,用户为各区域选择四个气流量级中的一个:高、中、低和关闭。因此,由系统控制装置36为区域i指定的比例常数如下:
选择的气流量 Pi
高 100%
中 75%
低 50%
关闭 0%
应当理解,本发明也可采用其他的气流量级和相关联的比例常数(Pi)百分数。
在步骤E处,通过利用标称区域气流(Anomi)值和用户指定的比例常数(Pi)独立计算各区域1、2和3的期望的持续风扇气流(Ai)。期望的持续风扇气流(Ai)值代表基于与所有区域的组合尺寸相比较的该区域相对尺寸和用户选择的风扇气流量级实际输送至各区域i的标称系统气流的部分。对于各区域1、2和3,期望的持续风扇气流(Ai)按下式计算:
Ai=Anomi*Pi (2)
系统然后进入步骤F,其中各区域i的风门34a、34b与34c按系统控制装置36的命令被调节到位置Di。位置Di或风门叶片从完全关闭位置到完全打开位置的开度百分比等于比例常数(Pi)。在一个优选实施例中,风门34特征是线性的。应当理解,系统控制装置36也可采用其他的风门34特征。
在步骤G处,系统控制装置36计算期望的系统气流(Asys)。各区域i的期望的持续风扇气流被用来进行这个确定。期望的系统气流(Asys)代表由空气输送器24输送的、将要在区域1、2和3当中相对于各区域的相对尺寸和用户选择的风扇气流量级按比例划分的气流总量。因此,期望的系统气流(Asys)按下式计算:
Asys=SUM(Ai),i为1至n(3)
这时,多区域HVAC系统内各区域的持续风扇气流的计算完成,并且在步骤H处,系统控制装置36命令空气输送器24将等于期望的系统气流(Asys)的气流输送至强制通风系统31。不同区域1、2和3中的各区域然后接受与用户在控制器38a、38b和38c上请求的气流相对应的气流量,并且风门34a、34b与34c的位置为此而被确定下来。
参见图2,用户选择的气流量级:高、中、低和关闭作为选项在各区域控制器38a、38b和38c处通过风扇按键40设置。应当理解,本发明也可利用其他气流量级和与其关联的比例常数(Pi)百分数。另外,区域控制器38a、38b和38c包含了区域按键42。区域按键42用来在区域1、2和3之间选择将由室内空气输送器24输送的风扇气流量级。区域控制器38a、38b和38c还为用户提供区域1、2和3中的各区域的当前温度。
见图4以示意方式说明多个包含本发明HVAC系统20的区域。仅作为举例,图中示出了三个区域,其中区域1是区域2大小的三倍,并且区域3是区域2大小的两倍。各区域的相对区域管道尺寸Si如下:区域1为50%、区域2为17%和区域3为33%。在区域1、区域2和区域3的区域控制器38a、38b和38c处,用户选择的风扇气流被分别设为高。仅作为举例,在每分钟1050立方英尺的标称系统气流的情况下,本发明的控制装置计算所需要的、将由室内空气输送器24输送至区域1、区域2和区域3的持续气流量。因为各区域均设为高,所有风门34a、34b和34c被设为完全打开位置。因此,基于标称系统气流、各区域的相对尺寸以及用户选择的风扇气流量级,区域1接受每分钟525立方英尺的气流量,区域2接受每分钟175立方英尺的气流量,以及区域3接受每分钟350立方英尺的气流量。室内空气输送器24按照系统控制装置36的命令输送全部的每分钟1050立方英尺的标称系统气流。
在另一例中,区域1、区域2和区域3的相对区域管道尺寸Si分别保持在50%、17%和33%,并且标称系统气流保持在每分钟1050立方英尺,用户分别在区域控制器38a、38b和38c处调节风扇气流,在区域1调节为高气流,在区域2调节为低气流并将区域3的气流设为关闭。在这种情形下,区域1的风门34a处于完全打开位置,区域2的风门34b处于允许标称的区域2气流的50%通过的中间位置。区域3的风门34c是关闭的。结果,区域1要求每分钟525立方英尺的气流,因为对于区域1用户选择的风扇气流量未改变。由于用户选择的风扇气流量级从高到低变化,区域2要求更低的气流量。在低设置时,区域2要求的气流量是高风扇设置时输送气流量的一半,因为高风扇设置的比例常数是100%而低风扇设置的比例常数是50%。区域2要求每分钟87.5立方英尺的气流。区域3要求零气流,因为区域3的用户选择的风扇气流量级被设为关闭。系统控制装置36调节由室内空气输送器24输送的期望的系统气流量,以反映导致等于每分钟612.5立方英尺的输送系统气流的期望的用户输入的变化。
在另一例中,区域1、区域2和区域3的相对区域管道尺寸Si分别保持在50%、17%和33%,并且标称系统气流保持在每分钟1050立方英尺,用户在区域控制器38a、38b和38c处调节风扇气流,在区域1调节为高气流,在区域2调节为低气流以及在区域3调节为中等气流。在这种情形下,区域1的风门34a处于完全打开位置,区域2的风门34b处于允许标称区域2气流的50%通过的中间位置,以及区域3的风门34c处于允许标称区域3气流的75%通过的中间位置。如同前面的例子,在这些区域的用户选择的风扇气流量级还未改变时,区域1要求每分钟525立方英尺的气流并且区域2要求每分钟87.5立方英尺的气流。由于用户选择的风扇气流量级从关闭到中等设置的变化,因此区域3要求更高的气流量。基于区域3的相对尺寸(33%)以及用户选择的中等风扇气流量级(75%),区域3要求每分钟262.5立方英尺的气流。系统控制装置36调节由室内空气输送器24输送的期望的系统气流量以反映导致等于每分钟875立方英尺的输送系统气流的期望的用户输入的变化。
因此,基于前述的示例,很显然,各区域的气流量取决于用户选择的风扇气流量级并且HVAC系统内区域的相对尺寸与输送至其他区域的气流量无关。
前面的说明应当理解为说明性的,且因此显然不具有限制意义。本领域普通技术人员当知,在本发明的范围内会出现某些变更。出于这个原因,应研读下面的权利要求以确定本发明的真实范围及内容。
Claims (10)
1.一种HVAC系统,其中包括:
温度变换部件;
第一管道系统,它在所述温度变换部件和第一区之间传递气流,所述第一管道系统限定第一相对区域管道尺寸;
第二管道系统,它在所述温度变换部件和第二区之间传递气流,所述第二管道系统限定第二相对区域管道尺寸;以及
系统控制装置,它独立地控制系统气流以根据所述第一相对区域管道尺寸和所述第二相对区域管道尺寸之间的相对区域管道尺寸差而将第一持续区域气流输送至所述第一区并将第二持续区域气流输送至所述第二区。
2.如权利要求1所述的HVAC系统,其中:所述第一管道系统包括用以限制传递至所述第一区的气流量的第一区风门,所述第二管道系统包括用以限制传递至所述第二区的气流量的第二区风门。
3.如权利要求1所述的HVAC系统,其中:所述第一区具有所述第一相对区域管道尺寸。
4.如权利要求1所述的HVAC系统,其中:所述第二区具有所述第二相对区域管道尺寸。
5.如权利要求2所述的HVAC系统,其中:所述系统控制装置命令所述第一区风门和所述第二区风门在多个风门位置之间变动。
6.如权利要求5所述的HVAC系统,其中:所述第一区风门和所述第二区风门的所述多个风门位置包括完全打开位置、完全关闭位置和中间位置。
7.如权利要求1所述的HVAC系统,还包括第三管道系统,它在所述温度变换部件和第三区之间传递气流,所述第三管道系统限定第三相对区域管道尺寸。
8.如权利要求7所述的HVAC系统,其中:所述系统控制装置独立地控制系统气流,以根据所述第一相对区域管道尺寸、所述第二相对区域管道尺寸和所述第三相对区域管道尺寸之间的相对区域管道尺寸差将所述第一持续区域气流输送至所述第一区、将所述第二持续区域气流输送至所述第二区、将第三持续区域气流输送至所述第三区。
9.如权利要求7所述的HVAC系统,其中:所述第三管道系统包括用以限制被允许进入所述第三区的气流量的第三区风门。
10.如权利要求7所述的HVAC系统,其中:所述第三区具有所述第三相对区域管道尺寸。
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PCT/US2005/001632 WO2005073637A1 (en) | 2004-01-20 | 2005-01-18 | Continuous fan control in a multi-zone hvac system |
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CN1910407B true CN1910407B (zh) | 2010-12-08 |
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EP (1) | EP1709368A4 (zh) |
KR (1) | KR100732575B1 (zh) |
CN (1) | CN1910407B (zh) |
AU (1) | AU2005208295A1 (zh) |
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KR100732575B1 (ko) | 2007-06-27 |
EP1709368A4 (en) | 2010-08-04 |
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KR20060111667A (ko) | 2006-10-27 |
WO2005073637A1 (en) | 2005-08-11 |
CN1910407A (zh) | 2007-02-07 |
HK1103434A1 (en) | 2007-12-21 |
AU2005208295A1 (en) | 2005-08-11 |
US20050156054A1 (en) | 2005-07-21 |
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