WO2018054178A1 - 空调系统的室内机的节流阀体的检测方法 - Google Patents
空调系统的室内机的节流阀体的检测方法 Download PDFInfo
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- WO2018054178A1 WO2018054178A1 PCT/CN2017/096107 CN2017096107W WO2018054178A1 WO 2018054178 A1 WO2018054178 A1 WO 2018054178A1 CN 2017096107 W CN2017096107 W CN 2017096107W WO 2018054178 A1 WO2018054178 A1 WO 2018054178A1
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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
- 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
- F24F2110/00—Control inputs relating to air properties
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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
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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
- F24F11/64—Electronic processing using pre-stored 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- the invention relates to the field of refrigeration, and in particular to a method for detecting a throttle body of an indoor unit of an air conditioning system.
- the present invention aims to solve at least one of the technical problems in the related art to some extent.
- the present invention provides a method of detecting a throttle body of an indoor unit of an air conditioning system, which can detect whether or not a throttle body of an indoor unit of an air conditioning system that has been put into use can be normally closed.
- the air conditioning system includes a plurality of indoor units, each indoor unit including an indoor heat exchanger, a throttle body, and an indoor fan
- the detecting method includes the steps of: entering the cooling mode of the air conditioning system; detecting an inlet temperature TA1 of the indoor heat exchanger of the indoor unit that is not turned on, and an inlet temperature TA2 of the indoor heat exchanger of the indoor unit that is turned on, and comparing Whether the inlet temperature TA1 is greater than the sum of the inlet temperature TA2 and the first preset value B; when TA1>TA2+B, it means that the throttle body of the indoor unit that is not turned on is normal; when TA1 ⁇ TA2+B, starting an indoor fan of the indoor unit that is not turned on and detecting whether an increase value of an outlet temperature TB of the indoor heat exchanger is greater than a predetermined temperature C; when an increase value of the outlet temperature TB is greater than
- the method for detecting a throttle body it is possible to effectively detect whether an abnormality occurs in the throttle body in the indoor unit that is not in an open state, thereby detecting the throttling of the indoor unit of the air conditioning system that has been put into use. Whether the valve body can be closed normally, reducing unnecessary energy consumption, and ensuring system reliability.
- the first preset value B ranges from 3 ° C to 5 ° C.
- the first preset value B is 3 °C.
- the predetermined temperature C is 2 °C.
- FIG. 1 is a flow chart of a method of detecting a throttle body in accordance with an embodiment of the present invention.
- a method for detecting a throttle body of an indoor unit of an air conditioning system is described in detail below with reference to FIG. 1, wherein the air conditioning system includes a plurality of indoor units, each of which includes an indoor heat exchanger, a throttle body, and
- the indoor fan and the air conditioning system further include an outdoor unit, and the outdoor unit is connected to a plurality of indoor units through internal and external machine piping, and the refrigerant circulation circuit can be formed between the outdoor unit and each indoor unit, and the outdoor unit includes a compressor, an outdoor heat exchanger, and
- the air conditioning system has a cooling mode and a heating mode. When the air conditioning system is in the cooling mode or the cooling mode, the circulation path between the refrigerant in the outdoor unit and the opened indoor unit is now There is technology, which is not described in detail here.
- the throttle body in the unopened indoor unit should be in a closed state, that is, when the indoor unit is in an unopened state, the corresponding throttle body is normal.
- the state is off, it is ensured that all the refrigerant discharged from the outdoor unit is discharged into the open indoor unit, thereby reducing unnecessary energy consumption.
- a method for detecting a throttle body of an indoor unit of an air conditioning system includes the steps of: entering an air conditioning system into a cooling mode; detecting an inlet temperature TA1 of an indoor heat exchanger of an indoor unit that is not turned on, and an indoor unit that is turned on The inlet temperature TA2 of the indoor heat exchanger is compared with whether the inlet temperature TA1 is greater than the sum of the inlet temperature TA2 and the first preset value B.
- the first preset value B ranges from 3 ° C to 5 ° C. Further, the first preset value B is 3 °C.
- TA1>TA2+B it means that the throttle body of the indoor unit that is not turned on is normal, that is, the throttle body of the indoor unit that is not opened is in the closed state.
- the throttle body of the indoor unit that is not opened is abnormal, that is, the throttle body of the indoor unit that is not opened is in an open state; when the outlet temperature TB is raised
- the value is not greater than the predetermined temperature C, it means that the throttle body of the indoor unit that is not turned on is normal.
- some indoor units when the air conditioning system is in the cooling mode, some indoor units may be in an unopened state and some indoor units are in an open state.
- the detecting method according to the embodiment of the present invention may be used to detect the indoor unit in the unopened state. Whether the flow valve body is abnormal.
- the inlet temperature TA1 of the inlet end of the indoor heat exchanger of the indoor unit in the unopened state is detected, and the inlet temperature TA2 of the inlet end of the indoor heat exchanger of the indoor unit in the open state is detected.
- TA1>TA2+B it means that the throttle body of the indoor unit that is in the unopened state is in the closed state, and no refrigerant flows into the indoor heat exchanger of the indoor unit that is not in the open state, thereby demonstrating that the indoor unit is in an unopened state.
- the throttle body of the machine is in a normal state, and the throttle body is not abnormal.
- the indoor fan of the indoor unit in the unopened state is forcibly turned on, and the indoor fan operates to guide the air to the indoor heat exchanger, and detects the outlet of the outlet end of the indoor heat exchanger of the indoor unit that is not turned on.
- Temperature TB when it is found that the outlet temperature TB of the indoor heat exchanger rises and the rise value is greater than the predetermined temperature C after the indoor fan is turned on, it means that part of the refrigerant enters the indoor heat exchanger for heat exchange to improve the indoor heat exchanger.
- the temperature at the outlet end indicates that the throttle body of the indoor unit in the unopened state is in an open state, that is, an abnormality occurs in the throttle body.
- the indoor heat exchanger outlet temperature TB does not rise or the rise value is not greater than the predetermined temperature C even after the indoor fan is turned on, it means that no refrigerant enters the indoor heat exchanger for heat exchange to improve the indoor heat exchange.
- the temperature at the outlet end of the device thereby indicating that the throttle body of the indoor unit in the unopened state is in a closed state, that is, the throttle body is normal.
- the method for detecting the throttle body according to the embodiment of the present invention can effectively detect whether an abnormality occurs in the throttle body in the indoor unit that is not in an open state, thereby detecting the air conditioning system that has been put into use. Whether the throttle body of the indoor unit can be normally shut down, reducing unnecessary energy consumption and ensuring system reliability.
- the predetermined temperature C is 2 °C.
- the temperature of the inlet and outlet ends of the indoor heat exchanger can be detected by a temperature sensor to reduce the detection complexity.
- the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
- the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
- the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
- the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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Abstract
一种空调系统的室内机的节流阀体的检测方法,包括如下步骤:空调系统进入制冷模式;检测未开启的室内机的室内换热器的入口温度TA1和开启的室内机的室内换热器的入口温度TA2;当TA1>TA2+B,表示未开启的室内机的所述节流阀体正常;当TA1≤TA2+B,启动未开启的室内机的室内风机并检测室内换热器的出口温度TB的升高值是否大于预定温度C;当出口温度TB的升高值大于预定温度C时,表示未开启的室内机的节流阀体异常;当出口温度TB的升高值不大于预定温度C时,表示未开启的室内机的节流阀体正常。该检测方法可以有效地检测处于未开启状态的室内机中的节流阀体是否发生异常,从而可以检测已经投入使用的空调系统的室内机的节流阀体是否能够正常关闭,减少无谓能耗,同时保证系统可靠性。
Description
本发明涉及制冷领域,尤其是涉及一种空调系统的室内机的节流阀体的检测方法。
空调系统在实际运行过程中,可能存在一些内机阀体处在常开状态,如果不能检测出来可能导致大量回液影响系统效果,甚至造成系统损坏。现有的一般策略是在安装调试时进行系统自动检测,以确保系统中所有的内机阀体是正常的,但对于已投入使用的系统,此方法不适宜。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此,本发明提出一种空调系统的室内机的节流阀体的检测方法,可以检测已经投入使用的空调系统的室内机的节流阀体是否能够正常关闭。
根据本发明实施例的空调系统的室内机的节流阀体的检测方法,所述空调系统包括多个室内机,每个室内机包括室内换热器、节流阀体和室内风机,所述检测方法包括如下步骤:所述空调系统进入制冷模式;检测未开启的所述室内机的室内换热器的入口温度TA1和开启的所述室内机的室内换热器的入口温度TA2,并比较所述入口温度TA1是否大于所述入口温度TA2与第一预设值B的和;当TA1>TA2+B,则表示未开启的所述室内机的所述节流阀体正常;当TA1≤TA2+B,启动未开启的所述室内机的室内风机并检测所述室内换热器的出口温度TB的升高值是否大于预定温度C;当出口温度TB的升高值大于预定温度C时,则表示未开启的所述室内机的所述节流阀体异常;当出口温度TB的升高值不大于预定温度C时,则表示未开启的所述室内机的所述节流阀体正常。
根据本发明实施例的节流阀体的检测方法,可以有效的检测处于未开启状态的室内机中的节流阀体是否发生异常,从而可以检测已经投入使用的空调系统的室内机的节流阀体是否能够正常关闭,减少无谓能耗,同时可以保证系统可靠性。
可选地,所述第一预设值B的取值范围为3℃-5℃。
进一步可选地,所述第一预设值B为3℃。
可选地,所述预定温度C为2℃。
图1是根据本发明实施例的节流阀体的检测方法的流程图。
下面详细描述本发明的实施例,所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。
下面参考图1详细描述根据本发明实施例的空调系统的室内机的节流阀体的检测方法,其中空调系统包括多个室内机,每个室内机包括室内换热器、节流阀体和室内风机,空调系统还包括室外机,室外机通过内外机配管与多个室内机相连,室外机和每个室内机之间可以组成冷媒循环流路,室外机包括压缩机、室外换热器和四通阀等元件,需要进行说明的是,空调系统具有制冷模式和制热模式,当空调系统处于制冷模式或制冷模式时,冷媒在室外机和开启的室内机之间的循环路径已为现有技术,这里就不详细描述。
可以理解的是,当某个室内机处于未开启状态时,未开启的室内机中的节流阀体应该处于关闭状态,即当室内机处于未开启状态时,相应的节流阀体的正常状态为关闭状态,才能保证从室外机排出的冷媒全部排入到开启的室内机中,从而减小无谓能耗。
根据本发明实施例的空调系统的室内机的节流阀体的检测方法,包括如下步骤:空调系统进入制冷模式;检测未开启的室内机的室内换热器的入口温度TA1和开启的室内机的室内换热器的入口温度TA2,并比较入口温度TA1是否大于入口温度TA2与第一预设值B的和。可选地,第一预设值B的取值范围为3℃-5℃。进一步地,第一预设值B为3℃。
当TA1>TA2+B,则表示未开启的室内机的节流阀体正常,即未开启的室内机的节流阀体处于关闭状态。当TA1≤TA2+B,启动未开启的室内机的室内风机并检测室内换热器的出口温度TB的升高值是否大于预定温度C,可以理解的是,判定出口温度TB的升高值是否大于预定温度C应该是将室内风机开启后检测到的室内换热器的出口温度与室内风机开启前检测到的室内换热器的出口温度进行比较,以判定出口温度TB的升高值是否大于预定温度C。
当出口温度TB的升高值大于预定温度C时,则表示未开启的室内机的节流阀体异常,即未开启的室内机的节流阀体处于打开状态;当出口温度TB的升高值不大于预定温度C时,则表示未开启的室内机的节流阀体正常。
具体而言,当空调系统处于制冷模式时,有些室内机可以处于未开启状态而有些室内机处于开启状态,此时可以采用根据本发明实施例的检测方法检测处于未开启状态的室内机的节流阀体是否异常。
首先检测处于未开启状态的室内机的室内换热器的入口端的入口温度TA1,且检测处于开启状态的室内机的室内换热器的入口端的入口温度TA2。当TA1>TA2+B,则表示处于未开启状态的室内机的节流阀体处于关闭状态,没有冷媒流入到处于未开启状态的室内机的室内换热器,从而证明处于未开启状态的室内机的节流阀体处于正常状态,节流阀体未发生异常。
当TA1≤TA2+B,则强制开启处于未开启状态的室内机的室内风机,室内风机运行以将空气导向室内换热器,检测处于未开启状态的室内机的室内换热器的出口端的出口
温度TB,当发现室内风机开启后室内换热器的出口温度TB升高且升高值大于预定温度C时,则表示有部分冷媒进入到室内换热器中进行换热以提高室内换热器的出口端的温度,从而表示处于未开启状态的室内机的节流阀体处于开启状态,即节流阀体发生异常。
当发现即使室内风机开启后,室内换热器的出口温度TB并未升高或者升高值不大于预定温度C时,则表示没有冷媒进入到室内换热器中进行换热以提高室内换热器的出口端的温度,从而表示处于未开启状态的室内机的节流阀体处于关闭状态,即节流阀体正常。
由上分析可知,根据本发明实施例的节流阀体的检测方法,可以有效的检测处于未开启状态的室内机中的节流阀体是否发生异常,从而可以检测已经投入使用的空调系统的室内机的节流阀体是否能够正常关闭,减少无谓能耗,同时可以保证系统可靠性。
在本发明的一些实施例中,预定温度C为2℃。从而可以避免由于检测装置的检测误差而出现判定失误的现象。
具体地,室内换热器的入口端和出口端的温度都可以通过温度传感器进行检测,以降低检测复杂性。
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接或彼此可通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述
实施例进行变化、修改、替换和变型。
Claims (4)
- 一种空调系统的室内机的节流阀体的检测方法,所述空调系统包括多个室内机,每个室内机包括室内换热器、节流阀体和室内风机,其特征在于,所述检测方法包括如下步骤:所述空调系统进入制冷模式;检测未开启的所述室内机的室内换热器的入口温度TA1和开启的所述室内机的室内换热器的入口温度TA2,并比较所述入口温度TA1是否大于所述入口温度TA2与第一预设值B的和;当TA1>TA2+B,则表示未开启的所述室内机的所述节流阀体正常;当TA1≤TA2+B,启动未开启的所述室内机的室内风机并检测所述室内换热器的出口温度TB的升高值是否大于预定温度C;当出口温度TB的升高值大于预定温度C时,则表示未开启的所述室内机的所述节流阀体异常;当出口温度TB的升高值不大于预定温度C时,则表示未开启的所述室内机的所述节流阀体正常。
- 根据权利要求1所述的空调系统的室内机的节流阀体的检测方法,其特征在于,所述第一预设值B的取值范围为3℃-5℃。
- 根据权利要求1所述的空调系统的室内机的节流阀体的检测方法,其特征在于,所述第一预设值B为3℃。
- 根据权利要求1-3中任一项所述的空调系统的室内机的节流阀体的检测方法,其特征在于,所述预定温度C为2℃。
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