WO2019153797A1 - Outdoor unit heat exchanger matching method and outdoor unit - Google Patents
Outdoor unit heat exchanger matching method and outdoor unit Download PDFInfo
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- WO2019153797A1 WO2019153797A1 PCT/CN2018/112181 CN2018112181W WO2019153797A1 WO 2019153797 A1 WO2019153797 A1 WO 2019153797A1 CN 2018112181 W CN2018112181 W CN 2018112181W WO 2019153797 A1 WO2019153797 A1 WO 2019153797A1
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
- F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
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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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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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
- 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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
Abstract
An outdoor unit heat exchanger (100) matching method and an outdoor unit. An outdoor unit heat exchanger (100) comprises a plurality of sets of refrigerant flow paths connected in parallel, and each set of the refrigerant flow paths comprises a plurality of rows of refrigerant pipes connected in series and a controllable switch member for controlling whether refrigerants flows through the refrigerant pipes. The outdoor unit heat exchanger (100) matching method comprises the steps of: controlling an air conditioner to operate in a cooling mode or a heating mode; obtaining the indoor unit coil temperature and the compressor discharge temperature in real time, and determining a switching state of the controllable switch member according to a known matching relationship; and determining, according to the switching state of the controllable switch member, the number of the refrigerant flow paths that allow the refrigerants to flow through, and determining the number of the refrigerant flow paths that allow the refrigerants to flow through and the switching state of the controllable switch member as those of the outdoor unit heat exchanger (100) matching the indoor unit. According to the method of the present invention, an outdoor unit can match different types of indoor units, and the problem in the prior art that an outdoor unit needs to be replaced when the indoor unit type is replaced is solved.
Description
本发明属于空气调节技术领域，具体地说，是涉及空调器，更具体地说，是涉及室外机换热器匹配方法及室外机。The present invention relates to the field of air conditioning technology, and in particular to an air conditioner, and more particularly to an outdoor unit heat exchanger matching method and an outdoor unit.
分体式空调器包括有室内机和室外机，现有技术中，一台室外机只能与一种类型的室内机组合成分体式空调器来使用，如果更换其他类型的室内机，室外机与室内机不匹配，尤其是室外机换热器与室内机换热器不匹配，导致空调系统无法正常使用。因此，现有技术中，为保证空调系统稳定运行，如果更换室内机类型，室外机也需要更换。更换室外机需要重新走连机管线，更换过程复杂；且同时更换室外机，导致更换成本较高。The split type air conditioner includes an indoor unit and an outdoor unit. In the prior art, an outdoor unit can only be combined with one type of indoor unit to form a component air conditioner, and if other types of indoor units are replaced, the outdoor unit and the indoor unit are used. The machine does not match, especially the outdoor unit heat exchanger does not match the indoor unit heat exchanger, resulting in the air conditioning system not working properly. Therefore, in the prior art, in order to ensure stable operation of the air conditioning system, if the indoor unit type is replaced, the outdoor unit also needs to be replaced. Replacing the outdoor unit requires re-connecting the connecting line, and the replacement process is complicated; and the outdoor unit is replaced at the same time, resulting in high replacement cost.
本发明的目的是提供一种室外机换热器匹配方法，使得一台室外机能够与不同类型的室内机相匹配，解决现有技术更换室内机类型时室外机也需要更换所带来的问题。The object of the present invention is to provide a method for matching an outdoor unit heat exchanger, so that one outdoor unit can be matched with different types of indoor units, and the problem that the outdoor unit needs to be replaced when replacing the indoor unit type in the prior art is solved. .
为解决上述技术问题，本发明提供的室外机换热器匹配方法采用下述技术方案予以实现：In order to solve the above technical problem, the outdoor unit heat exchanger matching method provided by the present invention is implemented by the following technical solutions:
一种室外机换热器匹配方法，所述室外机换热器包括有并联连接的多组冷媒流路，每组所述冷媒流路包括有若干排串联连接的冷媒管和控制所述冷媒管内是否流经冷媒的可控开关件，所述方法包括：An outdoor unit heat exchanger matching method, the outdoor unit heat exchanger comprising a plurality of sets of refrigerant flow paths connected in parallel, each set of the refrigerant flow path comprising a plurality of rows of refrigerant tubes connected in series and controlling the inside of the refrigerant tubes Whether to pass through the controllable switching device of the refrigerant, the method includes:
模式控制过程：进入室外机换热器匹配模式，控制空调器运行制冷模式或制热模式；Mode control process: enter the outdoor unit heat exchanger matching mode, and control the air conditioner to operate the cooling mode or the heating mode;
确定可控开关件的开关状态过程：实时获取室内机盘管温度和压缩机排气温度，根据所述室内机盘管温度和所述压缩机排气温度以及已知的匹配关系确定每组所述冷媒流路中的所述可控开关件的开关状态；所述匹配关系为室内机和室外机匹配时室内机盘管温度及压缩机排气温度满足的匹配关系；Determining a switch state process of the controllable switch member: acquiring an indoor unit coil temperature and a compressor exhaust temperature in real time, and determining each group according to the indoor unit coil temperature and the compressor exhaust temperature and a known matching relationship a switching state of the controllable switch device in the refrigerant flow path; the matching relationship is a matching relationship that the indoor unit coil temperature and the compressor exhaust temperature satisfy when the indoor unit and the outdoor unit are matched;
换热器匹配确定过程：通过所述可控开关件的开关状态确定允许流经冷媒的所述冷媒流路的数量，将所述允许流经冷媒的所述冷媒流路的数量以及确定的所述可控开关件的开关状态确定为与室内机相匹配的室外机换热器。a heat exchanger matching determining process: determining, by a switch state of the controllable switch member, a quantity of the refrigerant flow path allowing passage of a refrigerant, the number of the refrigerant flow paths allowed to flow through the refrigerant, and a determined location The switch state of the controllable switch member is determined as an outdoor unit heat exchanger that matches the indoor unit.
优选的，所述模式控制过程，具体为：Preferably, the mode control process is specifically:
进入室外机换热器匹配模式，控制空调器运行制冷模式。Enter the outdoor unit heat exchanger matching mode to control the air conditioner running cooling mode.
如上所述的方法，所述模式控制过程还包括：In the method as described above, the mode control process further includes:
控制每组所述冷媒流路中的所述可控开关件均处于全开状态；Controlling the controllable switch components in each group of the refrigerant flow paths to be in a fully open state;
所述确定可控开关件的开关状态过程还包括：The process of determining the switch state of the controllable switch component further includes:
将所述室内机盘管温度和所述压缩机排气温度分别与设定内机盘温和设定排气温度作比较，根据第一设定条件确定所述室内机盘管温度是否为匹配的室内机盘管温度，所述压缩机排气温度是否为匹配的排气温度；Comparing the indoor unit coil temperature and the compressor exhaust temperature with a set internal disc temperature and a set exhaust temperature, respectively, determining whether the indoor unit coil temperature is matched according to the first setting condition Indoor unit coil temperature, whether the compressor exhaust temperature is a matched exhaust temperature;
若所述室内机盘管温度为匹配的室内机盘管温度、且所述压缩机排气温度为匹配的排气温度，确定每组所述冷媒流量中的所述可控开关件保持全开状态；否则，关闭部分所述可控开关件，再次重新获取室内机盘管温度和压缩机排气温度，并确定重新获取的所述室内机盘管温度和所述压缩机排气温度是否为匹配的排气温度。Determining that the controllable switch member in each group of the refrigerant flow remains fully open if the indoor unit coil temperature is a matched indoor unit coil temperature and the compressor exhaust temperature is a matched exhaust temperature a state; otherwise, closing part of the controllable switch member, re-acquiring the indoor unit coil temperature and the compressor exhaust temperature again, and determining whether the re-acquired indoor unit coil temperature and the compressor exhaust temperature are Matching exhaust temperature.
如上所述的方法，所述第一设定条件包括：室内机盘管温度与所述设定内机盘温间的温差不大于第一设定内机盘温温差；压缩机排气温度与所述设定排气温度的温差不大于第一设定排气温度温差；In the method as described above, the first setting condition comprises: a temperature difference between the indoor unit coil temperature and the set internal machine disc temperature is not greater than a first set inner disc temperature difference; the compressor exhaust temperature is The temperature difference of the set exhaust gas temperature is not greater than the first set exhaust gas temperature difference;
所述根据第一设定条件确定所述室内机盘管温度是否为匹配的室内机盘管温度，所述压缩机排气温度是否为匹配的排气温度，具体包括：And determining, according to the first setting condition, whether the indoor unit coil temperature is a matched indoor unit coil temperature, and whether the compressor exhaust temperature is a matched exhaust temperature, specifically comprising:
若所述室内机盘管温度与所述设定内机盘温间的温差不大于所述第一设定内机盘温温差，判定所述室内机盘管温度为匹配的室内机盘管温度；If the temperature difference between the indoor unit coil temperature and the set internal machine disc temperature is not greater than the first set inner disc temperature difference, determine that the indoor unit coil temperature is a matching indoor unit coil temperature ;
若所述压缩机排气温度与所述设定排气温度的温差不大于所述第一设定排气温度温差，判定所述压缩机排气温度为匹配的排气温度。If the temperature difference between the compressor discharge temperature and the set exhaust temperature is not greater than the first set exhaust temperature difference, it is determined that the compressor exhaust temperature is a matched exhaust temperature.
如上所述的方法，所述关闭部分所述可控开关件，具体包括：In the method as described above, the closing part of the controllable switch component specifically includes:
首先关闭一个或两个位于换热器端部的所述冷媒流路中的所述可控开关件；First closing one or two controllable switch members located in the refrigerant flow path at the end of the heat exchanger;
若所述重新获取的所述室内机盘管温度为非匹配的室内机盘管温度或者所述重新获取的所述压缩机排气温度为非匹配的排气温度，再关闭还处于全开状态的位于换热器端部的所述冷媒流路中的所述可控开关件，或者，在位于换热器端部的所述冷媒流路中的所述可控开关件均关闭状态下再关闭与已经处于关闭状态的所述可控开关件所在的所述冷媒流路相邻的所述冷媒流路中的所述可控开关件。If the re-acquired indoor unit coil temperature is a non-matching indoor unit coil temperature or the re-acquired compressor exhaust temperature is a non-matching exhaust temperature, and then closed again in a fully open state The controllable switch member in the refrigerant flow path at the end of the heat exchanger, or the controllable switch member in the refrigerant flow path at the end of the heat exchanger is closed The controllable switch member in the refrigerant flow path adjacent to the refrigerant flow path in which the controllable switch member that is already in the closed state is located is closed.
如上所述的方法，所述方法还包括：The method as described above, the method further comprising:
在关闭部分所述可控开关件后，若所述重新获取的所述室内机盘管温度为匹配的室内机盘管温度，且所述重新获取的所述压缩机排气温度为匹配的排气温度，再根据第二设定条件确定所述重新获取的所述压缩机排气温度是否为稳定的排气温度；After closing the controllable switch member, if the re-acquired indoor unit coil temperature is a matched indoor unit coil temperature, and the re-acquired compressor exhaust temperature is a matched row a gas temperature, and determining, according to the second set condition, whether the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature;
若所述重新获取的所述压缩机排气温度为稳定的排气温度，保持所述稳定的排气温度所对应的所述可控开关件的开关状态不变；And if the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature, maintaining a stable exhaust gas temperature corresponding to a switchable state of the controllable switch device;
若所述重新获取的所述压缩机排气温度为非稳定的排气温度，控制处于关闭状态的所述可控开关件中最后关闭的所述可控开关件部分打开、处于非全开的状态；然后，再次重新获取室内机盘管温度和压缩机排气温度，并确定再次重新获取的所述室内机盘管温度和所述压缩机排气温度是否为稳定的排气温度。If the re-acquired compressor exhaust temperature is an unsteady exhaust temperature, the controllable switch member that is finally closed in the controllable switch member that is in the closed state is partially opened and is not fully open. State; then, the indoor unit coil temperature and the compressor exhaust temperature are again retrieved again, and it is determined whether the indoor unit coil temperature and the compressor exhaust temperature re-acquired again are stable exhaust temperatures.
如上所述的方法，所述第二设定条件包括：In the method as described above, the second setting condition comprises:
控制空调器保持匹配的室内机盘管温度和匹配的排气温度所对应的所述可控开关件的开关状态不变并运行第一设定运行时间；Controlling the air conditioner to maintain the matching indoor unit coil temperature and the matching exhaust gas temperature corresponding to the switch state of the controllable switch member and running the first set running time;
在所述第一设定运行时间内，判断获取的压缩机排气温度是否存在为非匹配的排气温度的情况；Determining, in the first set running time, whether the acquired compressor exhaust temperature exists as a non-matched exhaust gas temperature;
所述根据第二设定条件确定所述重新获取的所述压缩机排气温度是否为稳定的排气温度，具体包括：Determining, according to the second setting condition, whether the re-acquired exhaust gas temperature of the compressor is a stable exhaust gas temperature, specifically comprising:
若在所述第一设定运行时间内，获取的压缩机排气温度均为匹配的排气温度，判定所述重新获取的所述压缩机排气温度为稳定的排气温度；否则，判定所述重新获取的所述压缩机排气温度为非稳定的排气温度。If the obtained compressor exhaust gas temperature is a matched exhaust gas temperature during the first set running time, determining that the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature; otherwise, determining The re-acquired compressor exhaust temperature is an unsteady exhaust temperature.
优选的，所述可控开关件为电子膨胀阀。Preferably, the controllable switch member is an electronic expansion valve.
本发明还提供了一种室外机，包括有室外机换热器，所述室外机换热器包括有并联连接的多组冷媒流路，每组所述冷媒流路包括有若干排串联连接的冷媒管和控制所述冷媒管内是否流经冷媒的可控开关件；所述室外机还包括：The present invention also provides an outdoor unit comprising an outdoor unit heat exchanger, the outdoor unit heat exchanger comprising a plurality of sets of refrigerant flow paths connected in parallel, each set of the refrigerant flow paths comprising a plurality of rows connected in series a refrigerant pipe and a controllable switch device for controlling whether the refrigerant flows through the refrigerant pipe; the outdoor unit further includes:
模式控制单元，用于在进入室外机换热器匹配模式后，控制空调器运行制冷模式或制热模式；a mode control unit, configured to control the air conditioner to operate the cooling mode or the heating mode after entering the outdoor heat exchanger matching mode;
可控开关件的开关状态确定单元，用于实时获取室内机盘管温度和压缩机排气温度，根据所述室内机盘管温度和所述压缩机排气温度以及已知的匹配关系确定每组所述冷媒流路中的所述可控开关件的开关状态；所述匹配关系为室内机和室外机匹配时室内机盘管温度及压缩机排气温度满足的匹配关系；a switch state determining unit of the controllable switch member, configured to acquire an indoor unit coil temperature and a compressor exhaust temperature in real time, and determine each according to the indoor unit coil temperature and the compressor exhaust temperature and a known matching relationship a switching state of the controllable switch member in the refrigerant flow path; the matching relationship is a matching relationship between an indoor unit coil temperature and a compressor exhaust temperature when the indoor unit and the outdoor unit are matched;
换热器匹配确定单元，用于通过所述可控开关件的开关状态确定允许流经冷媒的所述冷媒流路的数量，将所述允许流经冷媒的所述冷媒流路的数量以及确定的所述可控开关件的开关状态确定为与室内机相匹配的室外机换热器。a heat exchanger matching determining unit, configured to determine, by a switch state of the controllable switch member, a quantity of the refrigerant flow path that is allowed to flow through the refrigerant, and the number and the determination of the refrigerant flow path allowed to flow through the refrigerant The switch state of the controllable switch member is determined to be an outdoor heat exchanger that matches the indoor unit.
如上所述的室外机，所述多组冷媒流路中，位于端部的冷媒流路所包含的冷媒管的排数大于位于内部的冷媒流路所包含的冷媒管的排数。In the outdoor unit as described above, in the plurality of sets of refrigerant flow paths, the number of the refrigerant pipes included in the refrigerant flow path at the end portion is larger than the number of the refrigerant pipes included in the refrigerant flow path located inside.
与现有技术相比，本发明的优点和积极效果是：本发明提供的室外机换热器匹配方法及室外机，将室外机换热器分为并联的多组冷媒流路，每组冷媒流路上设置可控开关件，在更换室内机后进入换热器匹配模式，通过室内机盘管温度和压缩机排气温度确定每组冷媒流路中的可控开关件的开关状态，利用可控开关件的开关状态确定允许流经冷媒的冷媒流路的数量，将允许流经冷媒的冷媒流路的数量及所对应的可控开关件的开关状态确定为与室内机相匹配的室外机换热器；通过设置可控开关件，能够利用开关件的开关状态实现对室外机换热器冷媒流路的选择，且开关件的开关状态由反映室内机与室外机是否匹配的室内机盘管温度和压缩机排气温度确定，因此，能够实现一种室外机换热器与不同类型的室内机的匹配，在更换室内机类型后，无需更换室外机换热器，仅需要更新可控开关件的开关状态进行室外机换热器冷媒流路的选取匹配，即可保证空调系统的稳定、可靠运行，解决了现有技术在更换室内机类型后必须要更换室外机而导致更换过程复杂、更换成本高的问题。Compared with the prior art, the advantages and positive effects of the present invention are: the outdoor heat exchanger matching method and the outdoor unit provided by the present invention, and the outdoor heat exchanger is divided into multiple groups of refrigerant flow paths in parallel, each group of refrigerants A controllable switch member is arranged on the flow path, and the heat exchanger matching mode is entered after the indoor unit is replaced, and the switch state of the controllable switch member in each group of the refrigerant flow path is determined by the indoor unit coil temperature and the compressor discharge temperature, and the switch state can be utilized. The switching state of the control switch member determines the number of refrigerant flow paths that allow the refrigerant to flow through, and determines the number of refrigerant flow paths that allow the refrigerant to flow through the refrigerant and the corresponding switch state of the controllable switch device to be determined as an outdoor unit that matches the indoor unit. The heat exchanger can be configured to realize the selection of the refrigerant flow path of the outdoor heat exchanger by using the switchable state of the switch member, and the switch state of the switch member is determined by whether the indoor unit and the outdoor unit are matched. The tube temperature and the compressor discharge temperature are determined, so that an outdoor unit heat exchanger can be matched with different types of indoor units, and after replacing the indoor unit type, there is no need to replace the outdoor unit. The heat exchanger only needs to update the switch state of the controllable switch member to select and match the refrigerant flow path of the outdoor heat exchanger to ensure stable and reliable operation of the air conditioning system, and solve the problem that the prior art must replace the indoor unit type. The problem of complicated replacement and high replacement cost is caused by replacing the outdoor unit.
结合附图阅读本发明的具体实施方式后，本发明的其他特点和优点将变得更加清楚。Other features and advantages of the present invention will become apparent from the Detailed Description of the Drawing.
图1是基于本发明室外机一个实施例的原理框图；1 is a schematic block diagram of an embodiment of an outdoor unit according to the present invention;
图2是基于本发明室外机换热器匹配方法一个实施例的流程图；2 is a flow chart of an embodiment of a method for matching a heat exchanger of an outdoor unit according to the present invention;
图3是基于本发明室外机换热器匹配方法另一个实施例的流程图。Fig. 3 is a flow chart showing another embodiment of the outdoor unit heat exchanger matching method based on the present invention.
为了使本发明的目的、技术方案及优点更加清楚明白，以下将结合附图和实施例，对本发明作进一步详细说明。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
请参见图1，该图所示为基于本发明室外机一个实施例的原理框图。具体而言，该实施例的室外机是其换热器的冷媒流路可变、能够匹配不同类型的室内机的一种室外机。Referring to Figure 1, there is shown a block diagram of an embodiment of an outdoor unit based on the present invention. Specifically, the outdoor unit of this embodiment is an outdoor unit in which the refrigerant flow path of the heat exchanger is variable and can match different types of indoor units.
具体的，如图1所示，该实施例的室外机包括有室外机换热器100，室外机换热器100包括有并联连接的五组冷媒流路，自上而下分别为第一冷媒流路110、第二冷媒流路120、第三冷媒流路130、第四冷媒流路140和第五冷媒流路150,而每组冷媒流路中包括有若干排串联连接的冷媒管以及与冷媒管串联连接的可控开关件，且可控开关件用来控制所连接的冷媒管内是否流经冷媒以及流经冷媒的量。而且，为使得室外机换热器100各处换热均匀，将换热效果低的端部冷媒流路所包含的冷媒管的排数设置为大于位于内部的、换热效果高的冷媒流路所包含的冷媒管的排数。Specifically, as shown in FIG. 1 , the outdoor unit of this embodiment includes an outdoor unit heat exchanger 100, and the outdoor unit heat exchanger 100 includes five groups of refrigerant flow paths connected in parallel, and the first refrigerant is from the top to the bottom. a flow path 110, a second refrigerant flow path 120, a third refrigerant flow path 130, a fourth refrigerant flow path 140, and a fifth refrigerant flow path 150, and each group of refrigerant flow paths includes a plurality of rows of refrigerant tubes connected in series and The controllable switch member is connected in series with the refrigerant tube, and the controllable switch member is used for controlling whether the refrigerant flowing through the connected refrigerant tube flows through the refrigerant and flows through the refrigerant. Further, in order to make the heat exchange of the outdoor unit heat exchanger 100 uniform, the number of the refrigerant tubes included in the end refrigerant flow path having a low heat exchange effect is set to be larger than the internal refrigerant flow path having a high heat exchange effect. The number of rows of refrigerant tubes included.
具体来说，第一冷媒流路110和第五冷媒流路150作为端部的冷媒流路，分别包括有串联连接的五排冷媒管（图中未标注），且第一冷媒流路110中与冷媒管串联连接有第一可控开关件111，第五冷媒流路150中与冷媒管串联连接有第五可控开关件151；第二冷媒流路120和第四冷媒流路140作为紧邻第一冷媒流路110和第五冷媒流路150的内部冷媒流路，分别包括有串联连接的四排冷媒管（图中未标注），且第二冷媒流路120中与冷媒管串联连接有第二可控开关件121，第四冷媒流路140中与冷媒管串联连接有第四可控开关件141；第三冷媒流路130作为第二冷媒流路120和第四冷媒流路140中间的内部冷媒流路，包括有三排冷媒管，且第三冷媒流路130中与冷媒管串联连接有第三可控开关件131。对于可控开关件，优选为开度可控的电子膨胀阀。Specifically, the first refrigerant flow path 110 and the fifth refrigerant flow path 150 as the end portion of the refrigerant flow path respectively include five rows of refrigerant tubes (not shown) connected in series, and the first refrigerant flow path 110 A first controllable switch member 111 is connected in series with the refrigerant tube, and a fifth controllable switch member 151 is connected in series with the refrigerant tube in the fifth refrigerant flow path 150; the second refrigerant flow path 120 and the fourth refrigerant flow path 140 are in close proximity The internal refrigerant flow paths of the first refrigerant flow path 110 and the fifth refrigerant flow path 150 respectively include four rows of refrigerant tubes (not shown) connected in series, and the second refrigerant flow path 120 is connected in series with the refrigerant tubes. The second controllable switch member 121 has a fourth controllable switch member 141 connected in series with the refrigerant tube in the fourth refrigerant flow path 140. The third refrigerant flow path 130 serves as the middle between the second refrigerant flow path 120 and the fourth refrigerant flow path 140. The internal refrigerant flow path includes three rows of refrigerant tubes, and a third controllable switch member 131 is connected in series with the refrigerant tube in the third refrigerant flow path 130. For the controllable switch member, an electronic expansion valve whose opening degree is controllable is preferred.
此外，该实施例的室外机还包括有模式控制单元200、可控开关件的开关状态确定单元300及换热器匹配确定单元400。其中，模式控制单元200用来在进入室外机换热器匹配模式后，控制空调器运行制冷模式或制热模式；可控开关件的开关状态确定单元300用于实时获取室内机盘管温度和压缩机排气温度，根据室内机盘管温度和压缩机排气温度以及已知的匹配关系确定每组冷媒流路中的可控开关件的开关状态；而换热器匹配确定单元400用于通过可控开关件的开关状态确定单元300所确定的可控开关件的开关状态确定允许流经冷媒的冷媒流路的数量，并将允许流经冷媒的冷媒流路的数量以及确定的可控开关件的开关状态确定为与室内机相匹配的室外机换热器。Further, the outdoor unit of this embodiment further includes a mode control unit 200, a switch state determining unit 300 of the controllable switch member, and a heat exchanger matching determining unit 400. The mode control unit 200 is configured to control the air conditioner to operate the cooling mode or the heating mode after entering the outdoor unit heat exchanger matching mode; the switch state determining unit 300 of the controllable switch device is configured to acquire the indoor unit coil temperature and the real time. a compressor discharge temperature, determining a switch state of the controllable switch member in each group of refrigerant flow paths according to an indoor unit coil temperature and a compressor discharge temperature and a known matching relationship; and the heat exchanger matching determining unit 400 is configured to Determining the number of refrigerant flow paths allowing the refrigerant to flow through the switch state of the controllable switch member determined by the switch state determining unit 300 of the controllable switch member, and allowing the number of refrigerant flow paths flowing through the refrigerant and the determined controllable The switching state of the switching member is determined to be an outdoor unit heat exchanger that matches the indoor unit.
具有上述结构的室外机，通过将换热器分为并联连接的多组冷媒流路，在每组冷媒流路中设置可控开关件，能够利用开关件的开关状态实现对室外机换热器中允许流经冷媒的冷媒流路的选择，通过允许流经冷媒的冷媒流路的不同形成了不同大小的室外机换热器；而开关件的开关状态通过室内机盘管温度和压缩机排气温度确定，使得确定出的允许流经冷媒的冷媒流路所形成的室外机换热器与室内机相匹配，那么，在更换室内机类型后，无需更换室外机换热器，仅需要更新可控开关件的开关状态进行室外机换热器冷媒流路的选取匹配，即可保证空调系统的稳定、可靠运行，解决了现有技术在更换室内机类型后必须要更换室外机而导致更换过程复杂、更换成本高的问题。更具体的室外机换热器匹配方法参见后面的描述。The outdoor unit having the above structure provides a controllable switch member in each group of refrigerant flow paths by dividing the heat exchanger into a plurality of sets of refrigerant flow paths connected in parallel, and can realize the outdoor heat exchanger by using the switch state of the switch member The selection of the refrigerant flow path allowing the flow of the refrigerant allows the outdoor heat exchangers of different sizes to be formed by allowing the flow paths of the refrigerant flowing through the refrigerant; and the switching state of the switch member passes through the indoor unit coil temperature and the compressor row The gas temperature is determined such that the determined outdoor heat exchanger formed by the refrigerant flow path allowing the refrigerant flows is matched with the indoor unit. Then, after replacing the indoor unit type, it is not necessary to replace the outdoor unit heat exchanger, and only needs to be updated. The switching state of the controllable switch member can be selected and matched by the refrigerant flow path of the outdoor heat exchanger to ensure stable and reliable operation of the air conditioning system, and the prior art must replace the outdoor unit after replacing the indoor unit type, thereby causing replacement. The process is complicated and the replacement cost is high. More specific outdoor heat exchanger matching methods are described later.
请参见图2，该图所示为基于本发明室外机换热器匹配方法一个实施例的流程图。在该实施例中，室外机换热器包括有并联连接的多组冷媒流路，每组冷媒流路包括有若干排串联连接的冷媒管和控制冷媒管内是否流经冷媒的可控开关件。具体可参考图1室外机的原理框图所示出的结构。对于具有该结构的室外机换热器，通过下述步骤构成的方法实现室外机换热器匹配，具体来说是实现室外机换热器与室内机的匹配。Referring to FIG. 2, there is shown a flow chart of an embodiment of the outdoor unit heat exchanger matching method according to the present invention. In this embodiment, the outdoor unit heat exchanger includes a plurality of sets of refrigerant flow paths connected in parallel, each set of refrigerant flow paths including a plurality of rows of refrigerant tubes connected in series and a controllable switch member for controlling whether the refrigerant tubes flow through the refrigerant. For details, refer to the structure shown in the schematic block diagram of the outdoor unit of FIG. 1. For the outdoor unit heat exchanger having the structure, the outdoor unit heat exchanger is matched by the method formed by the following steps, specifically, the outdoor unit heat exchanger and the indoor unit are matched.
步骤21：进入室外机换热器匹配模式，控制空调器运行制冷模式或制热模式。Step 21: Enter the outdoor unit heat exchanger matching mode to control the air conditioner to operate the cooling mode or the heating mode.
室外机换热器匹配模式通过触发而进入，譬如，在室内机类型更换之后、空调器正常运行之前，通过特殊指令而触发并进入该匹配模式。并且，在进入该匹配模式后，将控制空调器运行制冷模式或者制热模式，以利用制冷模式或制热模式运行过程中的室内机和室外机的参数实现室外机换热器与室内机的匹配。The outdoor unit heat exchanger matching mode is entered by triggering, for example, after the indoor unit type is replaced and before the air conditioner is normally operated, the special mode is used to trigger and enter the matching mode. Moreover, after entering the matching mode, the air conditioner is controlled to operate the cooling mode or the heating mode to realize the outdoor heat exchanger and the indoor unit by using the parameters of the indoor unit and the outdoor unit during the cooling mode or the heating mode operation process. match.
考虑到后面将利用室内机盘管温度和压缩机排气温度实现室外机换热器匹配，而且是需要空调器系统稳定运行之后的室内机盘管温度和压缩机排气温度，作为优选实施方式，在进入室外机换热器匹配模式后，控制空调器运行制冷模式。在制冷模式下，如果室外机换热器发生流路变化，室内机盘管温度和压缩机排气温度变化明显；且两个变化速度快，空调器系统也能以较快的速度达到稳定状态。因而，能够提高室外机换热器的匹配速度和匹配准确性。It is considered that the outdoor unit heat exchanger matching will be realized by using the indoor unit coil temperature and the compressor exhaust temperature later, and the indoor unit coil temperature and the compressor exhaust temperature after the stable operation of the air conditioner system are required, as a preferred embodiment. After entering the outdoor machine heat exchanger matching mode, the air conditioner is controlled to operate in the cooling mode. In the cooling mode, if the flow path of the outdoor heat exchanger changes, the indoor unit coil temperature and the compressor exhaust temperature change significantly; and the two changes are fast, and the air conditioner system can reach a steady state at a faster speed. . Therefore, the matching speed and matching accuracy of the outdoor unit heat exchanger can be improved.
步骤22：实时获取室内机盘管温度和压缩机排气温度，确定每组冷媒流路中的可控开关件的开关状态。Step 22: Acquire the indoor unit coil temperature and the compressor exhaust temperature in real time, and determine the switch state of the controllable switch member in each group of refrigerant flow paths.
具体来说，是根据室内机盘管温度和压缩机排气温度以及已知的匹配关系确定每组冷媒流路中的可控开关件的开关状态。其中，匹配关系为室内机和室外机匹配时室内机盘管温度及压缩机排气温度满足的匹配关系。Specifically, the switching state of the controllable switching elements in each group of refrigerant flow paths is determined based on the indoor unit coil temperature and the compressor discharge temperature and a known matching relationship. The matching relationship is a matching relationship between the indoor unit coil temperature and the compressor exhaust temperature when the indoor unit and the outdoor unit are matched.
具体的，在空调器制冷模式或者制热模式稳定运行后，通过温度检测单元、譬如温度传感器实时获取室内机盘管温度和压缩机排气温度，然后，基于这两个温度确定每组冷媒流路中的可控开关件的开关状态。可控开关件的开关状态不同，室外机换热器中流经冷媒的冷媒流路不同，冷媒流路不同，会使得室内机盘管温度和压缩机排气温度不同。现有技术中，室内机和室外机匹配的状态下，室内机盘管温度满足一定的匹配关系，压缩机排气温度也满足一定的匹配关系。那么，通过已知的室内机和室外机匹配时室内机盘管温度即压缩机排气温度应满足的匹配关系以及实时获取到的室内机盘管温度和压缩机排气温度，即可以确定出室内机和室外机匹配时所对应的可控开关件的开关状态。具体确定方法可以有多种不同的实现方式，该实施例不作限定，只要能够使得确定出的可控开关件的开关状态所对应的室外机换热器能够使得室内机盘管温度以及压缩机排气温度均满足已知的匹配关系即可。Specifically, after the air conditioner cooling mode or the heating mode is stably operated, the indoor unit coil temperature and the compressor exhaust temperature are obtained in real time by a temperature detecting unit, such as a temperature sensor, and then each group of refrigerant flows is determined based on the two temperatures. The switching state of the controllable switch member in the road. The switch state of the controllable switch member is different. The refrigerant flow path through the refrigerant in the outdoor heat exchanger is different, and the refrigerant flow path is different, which causes the indoor unit coil temperature and the compressor discharge temperature to be different. In the prior art, when the indoor unit and the outdoor unit are matched, the indoor unit coil temperature satisfies a certain matching relationship, and the compressor exhaust temperature also satisfies a certain matching relationship. Then, the matching relationship between the indoor unit coil temperature, that is, the compressor exhaust temperature, and the indoor unit coil temperature and the compressor exhaust temperature obtained in real time can be determined by the known indoor unit and the outdoor unit. The switch state of the controllable switch member corresponding to the indoor unit and the outdoor unit. The specific determination method may have a plurality of different implementation manners, and the embodiment is not limited as long as the determined outdoor unit heat exchanger corresponding to the switch state of the controllable switch member can make the indoor unit coil temperature and the compressor row The gas temperatures all satisfy the known matching relationship.
步骤23：通过可控开关件的开关状态确定允许流经冷媒的冷媒流路的数量，将允许流经冷媒的冷媒流路的数量以及确定的可控开关件的开关状态确定为与室内机相匹配的室外机换热器。Step 23: Determine the number of refrigerant flow paths that allow the refrigerant to flow through the switch state of the controllable switch member, determine the number of refrigerant flow paths that allow the flow of the refrigerant, and determine the switch state of the controllable switch device to be compared with the indoor unit. Matching outdoor unit heat exchangers.
可控开关件用来控制冷媒管内是否流经冷媒，开关件打开，开关件所控制的冷媒管内流经冷媒；开关件关闭，开关件所控制的冷媒管内不流经冷媒。那么，通过可控开关件的开关状态即可确定出允许流经冷媒的冷媒流路的数量。可控开关件的开关状态确定，允许流经冷媒的冷媒流路的数量也就确定；而流经冷媒的冷媒流路的数量确定，参与到空调器运行的室外机换热器也就确定了。因此，允许流经冷媒的冷媒流路的数量以及确定的可控开关件的开关状态即可确定为与室内机相匹配的室外机换热器。The controllable switch member is used to control whether the refrigerant flows through the refrigerant tube, the switch member is opened, and the refrigerant tube controlled by the switch member flows through the refrigerant; the switch member is closed, and the refrigerant tube controlled by the switch member does not flow through the refrigerant. Then, the number of refrigerant flow paths allowing the flow of the refrigerant can be determined by the switch state of the controllable switch member. The switch state of the controllable switch member is determined, and the number of refrigerant flow paths that allow the refrigerant to pass through is determined; and the number of refrigerant flow paths flowing through the refrigerant is determined, and the outdoor heat exchanger participating in the operation of the air conditioner is also determined. . Therefore, the number of refrigerant flow paths that allow the refrigerant to flow through and the determined switching state of the controllable switch member can be determined as the outdoor unit heat exchanger that matches the indoor unit.
采用上述方法，能够利用开关件的开关状态实现对室外机换热器冷媒流路的选择，且开关件的开关状态由反映室内机与室外机是否匹配的室内机盘管温度和压缩机排气温度确定，因此，能够实现一种室外机换热器与不同类型的室内机的匹配，在更换室内机类型后，无需更换室外机换热器，仅需要更新可控开关件的开关状态进行室外机换热器冷媒流路的选取匹配，即可保证空调系统的稳定、可靠运行，解决了现有技术在更换室内机类型后必须要更换室外机而导致更换过程复杂、更换成本高的问题。According to the above method, the selection of the refrigerant flow path of the outdoor heat exchanger can be realized by using the switch state of the switch member, and the switch state of the switch member is determined by whether the indoor unit and the outdoor unit match the indoor unit coil temperature and the compressor exhaust. The temperature is determined. Therefore, it is possible to match the outdoor heat exchanger with different types of indoor units. After replacing the indoor unit type, there is no need to replace the outdoor unit heat exchanger, and only the switch state of the controllable switch member needs to be updated for outdoor use. The selection and matching of the refrigerant flow path of the heat exchanger can ensure the stable and reliable operation of the air conditioning system, and solve the problem that the prior art has to replace the outdoor unit after replacing the indoor unit type, resulting in complicated replacement process and high replacement cost.
请参见图3，该图示出了基于本发明室外机换热器匹配方法另一个实施例的流程图。在该实施例中，室外机换热器包括有并联连接的多组冷媒流路，每组冷媒流路包括有若干排串联连接的冷媒管和控制冷媒管内是否流经冷媒的可控开关件。具体可参考图1室外机的原理框图所示出的结构。对于具有该结构的室外机换热器，通过下述步骤构成的方法实现室外机换热器匹配，具体来说是实现室外机换热器与室内机的匹配。Referring to Figure 3, there is shown a flow chart of another embodiment of the outdoor unit heat exchanger matching method based on the present invention. In this embodiment, the outdoor unit heat exchanger includes a plurality of sets of refrigerant flow paths connected in parallel, each set of refrigerant flow paths including a plurality of rows of refrigerant tubes connected in series and a controllable switch member for controlling whether the refrigerant tubes flow through the refrigerant. For details, refer to the structure shown in the schematic block diagram of the outdoor unit of FIG. 1. For the outdoor unit heat exchanger having the structure, the outdoor unit heat exchanger is matched by the method formed by the following steps, specifically, the outdoor unit heat exchanger and the indoor unit are matched.
步骤31：进入室外机换热器匹配模式，控制空调器运行制冷模式，控制每组冷媒流路中的可控开关件均处于全开状态。Step 31: Enter the outdoor heat exchanger matching mode, control the air conditioner running cooling mode, and control the controllable switch components in each group of refrigerant flow paths to be fully open.
室外机换热器匹配模式通过触发而进入，譬如，在室内机类型更换之后、空调器正常运行之前，通过特殊指令而触发并进入该匹配模式。并且，在进入该匹配模式后，将控制空调器运行制冷模式，以利用制冷模式运行过程中的室内机和室外机的参数实现室外机换热器与室内机的匹配。同时，控制每组冷媒流路中的可控开关件均处于全开状态，以便对可控开关件从全开进行控制，可以减少调整步骤，以较快的速度实现室外机换热器的匹配。The outdoor unit heat exchanger matching mode is entered by triggering, for example, after the indoor unit type is replaced and before the air conditioner is normally operated, the special mode is used to trigger and enter the matching mode. Moreover, after entering the matching mode, the air conditioner is controlled to operate the cooling mode to realize the matching between the outdoor unit heat exchanger and the indoor unit by using the parameters of the indoor unit and the outdoor unit during the cooling mode operation. At the same time, the controllable switch components in each group of refrigerant flow paths are controlled to be fully open, so that the controllable switch components can be controlled from full open, the adjustment steps can be reduced, and the outdoor heat exchangers can be matched at a faster speed. .
步骤32：实时获取室内机盘管温度和压缩机排气温度，分别与设定内机盘温和设定排气温度作比较，根据第一设定条件确定室内机盘管温度是否为匹配的室内机盘管温度，压缩机排气温度是否为匹配的排气温度。Step 32: Real-time acquisition of the indoor unit coil temperature and the compressor exhaust temperature are respectively compared with setting the internal machine disc temperature and setting the exhaust temperature, and determining whether the indoor unit coil temperature is a matching indoor according to the first setting condition. Machine coil temperature, compressor discharge temperature is the matching exhaust temperature.
在该实施例中，预先设置并存储有设定内机盘温和设定排气温度，还预先设置并存储有第一设定条件，设定内机盘温、设定排气温度及第一设定条件构成了室内机盘管温度及压缩机排气温度应满足的匹配关系。具体而言，第一设定条件包括：室内机盘管温度与设定内机盘温间的温差不大于第一设定内机盘温温差；压缩机排气温度与设定排气温度的温差不大于第一设定排气温度温差。其中，第一设定内机盘温温差和第一设定排气温度温差也是预置并存储的。In this embodiment, the set internal disk temperature and the set exhaust temperature are preset and stored, and the first setting condition is set and stored in advance, the internal disk temperature is set, the exhaust temperature is set, and the first The setting conditions constitute a matching relationship that the indoor unit coil temperature and the compressor discharge temperature should satisfy. Specifically, the first setting condition includes: the temperature difference between the indoor unit coil temperature and the set internal machine disc temperature is not greater than the first set inner disc temperature difference; the compressor exhaust temperature and the set exhaust temperature The temperature difference is not greater than the first set exhaust temperature difference. Wherein, the first set internal machine temperature difference and the first set exhaust temperature difference are also preset and stored.
在空调器进入制冷模式并稳定运行后，通过温度检测单元、譬如温度传感器实时获取室内机盘管温度和压缩机排气温度。然后，将室内机盘管温度与设定内机盘温作比较，将压缩机排气温度与设定排气温度作比较。如果室内机盘管温度与设定内机盘温间的温差不大于第一设定内机盘温温差，判定室内机盘管温度为匹配的室内机盘管温度；如果压缩机排气温度与设定排气温度的温差不大于第一设定排气温度温差，判定压缩机排气温度为匹配的排气温度。After the air conditioner enters the cooling mode and runs stably, the indoor unit coil temperature and the compressor exhaust temperature are obtained in real time by a temperature detecting unit such as a temperature sensor. Then, the indoor unit coil temperature is compared with the set internal unit temperature, and the compressor discharge temperature is compared with the set exhaust temperature. If the temperature difference between the indoor unit coil temperature and the set inner unit disc temperature is not greater than the first set inner disc temperature difference, determine that the indoor unit coil temperature is the matched indoor unit coil temperature; if the compressor exhaust temperature and The temperature difference of the exhaust gas temperature is set to be not greater than the first set exhaust gas temperature difference, and the compressor exhaust gas temperature is determined to be the matched exhaust gas temperature.
步骤33：若室内机盘管温度为匹配的室内机盘管温度、且压缩机排气温度为匹配的排气温度，确定每组冷媒流量中的可控开关件保持全开状态；否则，关闭部分可控开关件，再次重新获取室内机盘管温度和压缩机排气温度，并确定重新获取的室内机盘管温度和压缩机排气温度是否为匹配的排气温度。Step 33: If the indoor unit coil temperature is the matched indoor unit coil temperature and the compressor exhaust temperature is the matched exhaust temperature, it is determined that the controllable switch member in each group of refrigerant flow remains fully open; otherwise, the shutdown The partially controllable switch piece re-acquires the indoor unit coil temperature and the compressor discharge temperature again, and determines whether the re-acquired indoor unit coil temperature and the compressor discharge temperature are matched exhaust temperatures.
通过步骤32的判断过程，若室内机盘管温度为匹配的室内机盘管温度、且压缩机排气温度为匹配的排气温度，表明此时允许冷媒流经的冷媒流路所确定的室外机换热器能够使得室内机盘管温度及压缩机排气温度均满足室内机与室外机匹配状态下的匹配关系，此时室外机换热器与室内机是匹配的，则保持可控开关件初始的全开状态不变。然后，执行步骤34。Through the judging process of step 32, if the indoor unit coil temperature is the matched indoor unit coil temperature and the compressor exhaust temperature is the matched exhaust temperature, indicating the outdoor determined by the refrigerant flow path allowing the refrigerant to flow at this time. The machine heat exchanger can make the indoor unit coil temperature and the compressor exhaust temperature meet the matching relationship between the indoor unit and the outdoor unit. At this time, the outdoor unit heat exchanger and the indoor unit are matched, and the controllable switch is maintained. The initial full open state of the piece does not change. Then, step 34 is performed.
而如果通过步骤32的判断，确定室内机盘管温度不是匹配的室内机盘管温度，或者压缩机排气温度不是匹配的排气温度，则表明可控开关件全开状态所确定出的允许流经冷媒的冷媒流路所构成的室外机换热器与当前的室内机并不匹配。且由于可控开关件均处于全开状态，则将通过控制部分开关件的关闭进行允许流经冷媒的冷媒流路的调整。具体来说，是关闭部分可控开关件，再次重新获取室内机盘管温度和压缩机排气温度，并确定重新获取的室内机盘管温度和压缩机排气温度是否为匹配的排气温度。If, by the judgment of step 32, it is determined that the indoor unit coil temperature is not the matched indoor unit coil temperature, or the compressor exhaust temperature is not the matched exhaust temperature, the permission determined by the fully openable state of the controllable switch member is indicated. The outdoor heat exchanger constituted by the refrigerant flow path flowing through the refrigerant does not match the current indoor unit. Moreover, since the controllable switch members are all in the fully open state, the adjustment of the refrigerant flow path allowing the flow of the refrigerant to be performed by the closing of the control portion switch member is performed. Specifically, it is to close part of the controllable switch piece, re-acquire the indoor unit coil temperature and the compressor exhaust temperature again, and determine whether the re-acquired indoor unit coil temperature and compressor exhaust temperature are matched exhaust temperatures. .
更具体的，为提高调整速度，关闭部分可控开关件，具体包括：More specifically, in order to increase the adjustment speed, the part of the controllable switch component is turned off, and specifically includes:
首先关闭一个或两个位于换热器端部的冷媒流路中的可控开关件。这是因为，端部换热器的换热效果差，优选进行关闭。譬如图1示出的室外机，首先关闭位于上端的第一冷媒流路110中的可控开关件111，或者首先关闭位于下端的第五冷媒流路150中的可控开关件151，或者同时关闭可控开关件111和可控开关件151。关闭一个还是两个可控开关件，可以根据室内机盘管温度与设定内机盘温的温差大小或压缩机排气温度与设定排气温度的温差大小来确定。若其中一个温差较大、大于了设定极限温差，则直接关闭两个可控开关件；若两个温差仅不大于设定极限温差，则只关闭其中一个可控开关件。First, one or two controllable switching members located in the refrigerant flow path at the end of the heat exchanger are closed. This is because the heat exchange effect of the end heat exchanger is poor, and it is preferable to perform the shutdown. For example, the outdoor unit shown in FIG. 1 first closes the controllable switch member 111 in the first refrigerant flow path 110 at the upper end, or first closes the controllable switch member 151 in the fifth refrigerant flow path 150 at the lower end, or simultaneously The controllable switch member 111 and the controllable switch member 151 are closed. Turning off one or two controllable switch parts can be determined according to the temperature difference between the indoor unit coil temperature and the set internal machine temperature or the temperature difference between the compressor discharge temperature and the set exhaust temperature. If one of the temperature differences is larger than the set limit temperature difference, the two controllable switch parts are directly closed; if the two temperature differences are not greater than the set limit temperature difference, only one of the controllable switch parts is turned off.
关闭可控开关件后，重新获取室内机盘管温度和压缩机排气温度，并按照步骤32的过程，再次判断是否为匹配的室内机盘管温度及匹配的压缩机排气温度。若是，则将该次调整后的可控开关件的开关状态确定为最终的状态。After the controllable switch member is closed, the indoor unit coil temperature and the compressor discharge temperature are re-acquired, and according to the process of step 32, it is again determined whether the matching indoor unit coil temperature and the matched compressor discharge temperature. If so, the switch state of the adjusted controllable switch member is determined to be the final state.
若重新获取的室内机盘管温度为非匹配的室内机盘管温度，或者重新获取的压缩机排气温度为非匹配的排气温度，表明该次调整的可控开关件的开关状态仍不合适，则再关闭还处于全开状态的位于换热器端部的冷媒流路中的可控开关件，或者，在位于换热器端部的冷媒流路中的可控开关件均关闭状态下再关闭与已经处于关闭状态的可控开关件所在的冷媒流路相邻的冷媒流路中的可控开关件。譬如，参见图1所示，若该次调整关闭的可控开关件为第一可控开关件111，那么，将再关闭第五可控开关件151。若该次调整关闭的可控开关件为第一可控开关件111和第五可控开关件151，那么，将再关闭第二可控开关件121或者第四可控开关件141。概括来说，是按照先端部、后内部的顺序依次关闭可控开关件。If the re-acquired indoor unit coil temperature is a non-matched indoor unit coil temperature, or the re-acquired compressor exhaust temperature is a non-matched exhaust temperature, indicating that the switch state of the controllable switch member of the adjustment is still not Suitably, the controllable switch member in the refrigerant flow path at the end of the heat exchanger that is still in the fully open state is closed, or the controllable switch member in the refrigerant flow path at the end of the heat exchanger is closed. Then, the controllable switch member in the refrigerant flow path adjacent to the refrigerant flow path where the controllable switch member that is already in the closed state is closed is closed. For example, as shown in FIG. 1, if the controllable switch member that is closed and closed is the first controllable switch member 111, the fifth controllable switch member 151 will be closed again. If the controllable switch member that is closed for the second time is the first controllable switch member 111 and the fifth controllable switch member 151, the second controllable switch member 121 or the fourth controllable switch member 141 will be turned off again. In summary, the controllable switch components are sequentially closed in the order of the front end and the rear inner.
再次关闭可控开关件后，将再次重新获取室内机盘管温度和压缩机排气温度，并按照步骤32的过程，再次判断是否为匹配的室内机盘管温度及匹配的压缩机排气温度。若是，则将该次调整后的可控开关件的开关状态确定为最终的状态。若为否，继续关闭部分可控开关件。After the controllable switch member is closed again, the indoor unit coil temperature and the compressor discharge temperature will be reacquired again, and according to the process of step 32, it is determined again whether it is the matching indoor unit coil temperature and the matched compressor discharge temperature. . If so, the switch state of the adjusted controllable switch member is determined to be the final state. If no, continue to turn off some of the controllable switch components.
步骤34：通过可控开关件的开关状态确定允许流经冷媒的冷媒流路的数量，将允许流经冷媒的冷媒流路的数量以及确定的可控开关件的开关状态确定为与室内机相匹配的室外机换热器。Step 34: Determine the number of refrigerant flow paths that are allowed to flow through the refrigerant by the switch state of the controllable switch member, determine the number of refrigerant flow paths that allow the flow of the refrigerant, and determine the switch state of the controllable switch device to be compared with the indoor unit. Matching outdoor unit heat exchangers.
此后在空调器正常运行过程中，保持确定的可控开关件的开关状态不变，以保证空调的正常运行。Thereafter, during the normal operation of the air conditioner, the determined switch state of the controllable switch member is maintained to ensure the normal operation of the air conditioner.
在其他一些实施例中，室外机换热器匹配方法还包括下述过程：In some other embodiments, the outdoor unit heat exchanger matching method further includes the following process:
在关闭部分可控开关件后，若重新获取的室内机盘管温度为匹配的室内机盘管温度，且重新获取的压缩机排气温度为匹配的排气温度，那么，再根据第二设定条件确定重新获取的压缩机排气温度是否为稳定的排气温度。After the part of the controllable switch member is closed, if the re-acquired indoor unit coil temperature is the matched indoor unit coil temperature, and the re-acquired compressor discharge temperature is the matched exhaust temperature, then according to the second design The condition determines whether the re-acquired compressor discharge temperature is a stable exhaust temperature.
若重新获取的压缩机排气温度为稳定的排气温度，保持稳定的排气温度所对应的可控开关件的开关状态不变；If the re-acquired compressor discharge temperature is a stable exhaust gas temperature, the switch state of the controllable switch member corresponding to the stable exhaust gas temperature is unchanged;
若重新获取的压缩机排气温度为非稳定的排气温度，将控制处于关闭状态的可控开关件中最后关闭的可控开关件部分打开、处于非全开的状态；然后，再次重新获取室内机盘管温度和压缩机排气温度，并确定再次重新获取的室内机盘管温度和所述压缩机排气温度是否为稳定的排气温度。并将压缩机排气温度为稳定的排气温度所对应的可控开关件的开关状态确定为最终开关状态。If the re-acquired compressor exhaust temperature is an unsteady exhaust temperature, the controllable switch member that is finally closed in the controllable switch member that is in the closed state is turned on, is in a non-fully open state; and then reacquired again. The indoor unit coil temperature and the compressor discharge temperature determine whether the re-acquired indoor unit coil temperature and the compressor discharge temperature are stable exhaust temperatures. The switch state of the controllable switch member corresponding to the stable exhaust gas temperature of the compressor is determined to be the final switch state.
其中，第二设定条件包括：Wherein, the second setting condition comprises:
控制空调器保持匹配的室内机盘管温度和匹配的排气温度所对应的可控开关件的开关状态不变并运行第一设定运行时间。The control air conditioner maintains the matching indoor unit coil temperature and the matching exhaust gas temperature corresponding to the switch state of the controllable switch member and runs the first set running time.
在第一设定运行时间内，判断获取的压缩机排气温度是否存在为非匹配的排气温度的情况。During the first set operation time, it is judged whether or not the obtained compressor discharge temperature exists as a non-matched exhaust gas temperature.
那么，根据第二设定条件确定重新获取的压缩机排气温度是否为稳定的排气温度，具体包括：Then, determining whether the re-acquired compressor exhaust temperature is a stable exhaust temperature according to the second setting condition comprises:
若在第一设定运行时间内，获取的压缩机排气温度均为匹配的排气温度，判定重新获取的压缩机排气温度为稳定的排气温度；否则，判定重新获取的压缩机排气温度为非稳定的排气温度。If the obtained compressor exhaust temperature is the matched exhaust gas temperature during the first set running time, it is determined that the re-acquired compressor exhaust temperature is a stable exhaust temperature; otherwise, the re-acquired compressor row is determined. The gas temperature is an unstable exhaust temperature.
在压缩机排气温度是匹配的排气温度而确定了可控开关件的开关状态后，在运行过程中，可能会存在着在某个或某些瞬时压缩机排气温度发生超调而不是匹配的排气温度，在此情况下，容易误判为可控开关件的状态不合适而再次进行调整。为减少可控开关件的频繁动作，设置上述过程，在压缩机排气温度为匹配的排气温度后，再次确定压缩机排气温度是否为稳定的排气温度。如果为非稳定的排气温度，通过对最后关闭的可控开关件作微调，控制其打开，但是开度小于全开开度，再次进行调整，直至压缩机排气温度为稳定的排气温度。After the compressor discharge temperature is the matched exhaust temperature and the switch state of the controllable switch member is determined, during operation, there may be an overshoot of the compressor discharge temperature at some or some of the instantaneous compressors instead of The matched exhaust gas temperature, in this case, is easily misjudged as the state of the controllable switch member is not suitable and is adjusted again. In order to reduce the frequent operation of the controllable switch member, the above process is set to determine whether the compressor discharge temperature is a stable exhaust gas temperature after the compressor discharge temperature is the matched exhaust gas temperature. If it is an unsteady exhaust temperature, it is controlled to open by controlling the last closed controllable switch member, but the opening is less than the full opening degree, and the adjustment is made again until the compressor discharge temperature is a stable exhaust temperature. .
以上实施例仅用以说明本发明的技术方案，而非对其进行限制；尽管参照前述实施例对本发明进行了详细的说明，对于本领域的普通技术人员来说，依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明所要求保护的技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions are described as being modified, or equivalents are replaced by some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the technical solutions claimed in the present invention.
Claims (10)
- 一种室外机换热器匹配方法，其特征在于，所述室外机换热器包括有并联连接的多组冷媒流路，每组所述冷媒流路包括有若干排串联连接的冷媒管和控制所述冷媒管内是否流经冷媒的可控开关件，所述方法包括：The outdoor unit heat exchanger matching method is characterized in that the outdoor unit heat exchanger comprises a plurality of sets of refrigerant flow paths connected in parallel, each group of the refrigerant flow paths comprises a plurality of rows of refrigerant tubes connected in series and controlled Whether a controllable switch member of the refrigerant flows through the refrigerant pipe, the method comprising:模式控制过程：进入室外机换热器匹配模式，控制空调器运行制冷模式或制热模式；Mode control process: enter the outdoor unit heat exchanger matching mode, and control the air conditioner to operate the cooling mode or the heating mode;确定可控开关件的开关状态过程：实时获取室内机盘管温度和压缩机排气温度，根据所述室内机盘管温度和所述压缩机排气温度以及已知的匹配关系确定每组所述冷媒流路中的所述可控开关件的开关状态；所述匹配关系为室内机和室外机匹配时室内机盘管温度及压缩机排气温度满足的匹配关系；Determining a switch state process of the controllable switch member: acquiring an indoor unit coil temperature and a compressor exhaust temperature in real time, and determining each group according to the indoor unit coil temperature and the compressor exhaust temperature and a known matching relationship a switching state of the controllable switch device in the refrigerant flow path; the matching relationship is a matching relationship that the indoor unit coil temperature and the compressor exhaust temperature satisfy when the indoor unit and the outdoor unit are matched;换热器匹配确定过程：通过所述可控开关件的开关状态确定允许流经冷媒的所述冷媒流路的数量，将所述允许流经冷媒的所述冷媒流路的数量以及确定的所述可控开关件的开关状态确定为与室内机相匹配的室外机换热器。a heat exchanger matching determining process: determining, by a switch state of the controllable switch member, a quantity of the refrigerant flow path allowing passage of a refrigerant, the number of the refrigerant flow paths allowed to flow through the refrigerant, and a determined location The switch state of the controllable switch member is determined as an outdoor unit heat exchanger that matches the indoor unit.
- 根据权利要求1所述的方法，其特征在于，所述模式控制过程，具体为：The method according to claim 1, wherein the mode control process is specifically:进入室外机换热器匹配模式，控制空调器运行制冷模式。Enter the outdoor unit heat exchanger matching mode to control the air conditioner running cooling mode.
- 根据权利要求1所述的方法，其特征在于，所述模式控制过程还包括：The method of claim 1 wherein the mode control process further comprises:控制每组所述冷媒流路中的所述可控开关件均处于全开状态；Controlling the controllable switch components in each group of the refrigerant flow paths to be in a fully open state;所述确定可控开关件的开关状态过程还包括：The process of determining the switch state of the controllable switch component further includes:将所述室内机盘管温度和所述压缩机排气温度分别与设定内机盘温和设定排气温度作比较，根据第一设定条件确定所述室内机盘管温度是否为匹配的室内机盘管温度，所述压缩机排气温度是否为匹配的排气温度；Comparing the indoor unit coil temperature and the compressor exhaust temperature with a set internal disc temperature and a set exhaust temperature, respectively, determining whether the indoor unit coil temperature is matched according to the first setting condition Indoor unit coil temperature, whether the compressor exhaust temperature is a matched exhaust temperature;若所述室内机盘管温度为匹配的室内机盘管温度、且所述压缩机排气温度为匹配的排气温度，确定每组所述冷媒流量中的所述可控开关件保持全开状态；否则，关闭部分所述可控开关件，再次重新获取室内机盘管温度和压缩机排气温度，并确定重新获取的所述室内机盘管温度和所述压缩机排气温度是否为匹配的排气温度。Determining that the controllable switch member in each group of the refrigerant flow remains fully open if the indoor unit coil temperature is a matched indoor unit coil temperature and the compressor exhaust temperature is a matched exhaust temperature a state; otherwise, closing part of the controllable switch member, re-acquiring the indoor unit coil temperature and the compressor exhaust temperature again, and determining whether the re-acquired indoor unit coil temperature and the compressor exhaust temperature are Matching exhaust temperature.
- 根据权利要求3所述的方法，其特征在于，所述第一设定条件包括：室内机盘管温度与所述设定内机盘温间的温差不大于第一设定内机盘温温差；压缩机排气温度与所述设定排气温度的温差不大于第一设定排气温度温差；The method according to claim 3, wherein the first setting condition comprises: a temperature difference between the indoor unit coil temperature and the set internal machine disc temperature is not greater than a first set inner disc temperature difference a temperature difference between the compressor discharge temperature and the set exhaust temperature is not greater than a first set exhaust temperature difference;所述根据第一设定条件确定所述室内机盘管温度是否为匹配的室内机盘管温度，所述压缩机排气温度是否为匹配的排气温度，具体包括：And determining, according to the first setting condition, whether the indoor unit coil temperature is a matched indoor unit coil temperature, and whether the compressor exhaust temperature is a matched exhaust temperature, specifically comprising:若所述室内机盘管温度与所述设定内机盘温间的温差不大于所述第一设定内机盘温温差，判定所述室内机盘管温度为匹配的室内机盘管温度；If the temperature difference between the indoor unit coil temperature and the set internal machine disc temperature is not greater than the first set inner disc temperature difference, determine that the indoor unit coil temperature is a matching indoor unit coil temperature ;若所述压缩机排气温度与所述设定排气温度的温差不大于所述第一设定排气温度温差，判定所述压缩机排气温度为匹配的排气温度。If the temperature difference between the compressor discharge temperature and the set exhaust temperature is not greater than the first set exhaust temperature difference, it is determined that the compressor exhaust temperature is a matched exhaust temperature.
- 根据权利要求3所述的方法，其特征在于，所述关闭部分所述可控开关件，具体包括：The method according to claim 3, wherein the closing part of the controllable switch component comprises:首先关闭一个或两个位于换热器端部的所述冷媒流路中的所述可控开关件；First closing one or two controllable switch members located in the refrigerant flow path at the end of the heat exchanger;若所述重新获取的所述室内机盘管温度为非匹配的室内机盘管温度或者所述重新获取的所述压缩机排气温度为非匹配的排气温度，再关闭还处于全开状态的位于换热器端部的所述冷媒流路中的所述可控开关件，或者，在位于换热器端部的所述冷媒流路中的所述可控开关件均关闭状态下再关闭与已经处于关闭状态的所述可控开关件所在的所述冷媒流路相邻的所述冷媒流路中的所述可控开关件。If the re-acquired indoor unit coil temperature is a non-matching indoor unit coil temperature or the re-acquired compressor exhaust temperature is a non-matching exhaust temperature, and then closed again in a fully open state The controllable switch member in the refrigerant flow path at the end of the heat exchanger, or the controllable switch member in the refrigerant flow path at the end of the heat exchanger is closed The controllable switch member in the refrigerant flow path adjacent to the refrigerant flow path in which the controllable switch member that is already in the closed state is located is closed.
- 根据权利要求5所述的方法，其特征在于，所述方法还包括：The method of claim 5, wherein the method further comprises:在关闭部分所述可控开关件后，若所述重新获取的所述室内机盘管温度为匹配的室内机盘管温度，且所述重新获取的所述压缩机排气温度为匹配的排气温度，再根据第二设定条件确定所述重新获取的所述压缩机排气温度是否为稳定的排气温度；After closing the controllable switch member, if the re-acquired indoor unit coil temperature is a matched indoor unit coil temperature, and the re-acquired compressor exhaust temperature is a matched row a gas temperature, and determining, according to the second set condition, whether the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature;若所述重新获取的所述压缩机排气温度为稳定的排气温度，保持所述稳定的排气温度所对应的所述可控开关件的开关状态不变；And if the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature, maintaining a stable exhaust gas temperature corresponding to a switchable state of the controllable switch device;若所述重新获取的所述压缩机排气温度为非稳定的排气温度，控制处于关闭状态的所述可控开关件中最后关闭的所述可控开关件部分打开、处于非全开的状态；然后，再次重新获取室内机盘管温度和压缩机排气温度，并确定再次重新获取的所述室内机盘管温度和所述压缩机排气温度是否为稳定的排气温度。If the re-acquired compressor exhaust temperature is an unsteady exhaust temperature, the controllable switch member that is finally closed in the controllable switch member that is in the closed state is partially opened and is not fully open. State; then, the indoor unit coil temperature and the compressor exhaust temperature are again retrieved again, and it is determined whether the indoor unit coil temperature and the compressor exhaust temperature re-acquired again are stable exhaust temperatures.
- 根据权利要求6所述的方法，其特征在于，所述第二设定条件包括：The method of claim 6 wherein said second setting condition comprises:控制空调器保持匹配的室内机盘管温度和匹配的排气温度所对应的所述可控开关件的开关状态不变并运行第一设定运行时间；Controlling the air conditioner to maintain the matching indoor unit coil temperature and the matching exhaust gas temperature corresponding to the switch state of the controllable switch member and running the first set running time;在所述第一设定运行时间内，判断获取的压缩机排气温度是否存在为非匹配的排气温度的情况；Determining, in the first set running time, whether the acquired compressor exhaust temperature exists as a non-matched exhaust gas temperature;所述根据第二设定条件确定所述重新获取的所述压缩机排气温度是否为稳定的排气温度，具体包括：Determining, according to the second setting condition, whether the re-acquired exhaust gas temperature of the compressor is a stable exhaust gas temperature, specifically comprising:若在所述第一设定运行时间内，获取的压缩机排气温度均为匹配的排气温度，判定所述重新获取的所述压缩机排气温度为稳定的排气温度；否则，判定所述重新获取的所述压缩机排气温度为非稳定的排气温度。If the obtained compressor exhaust gas temperature is a matched exhaust gas temperature during the first set running time, determining that the re-acquired compressor exhaust gas temperature is a stable exhaust gas temperature; otherwise, determining The re-acquired compressor exhaust temperature is an unsteady exhaust temperature.
- 根据权利要求1至7中任一项所述的方法，其特征在于，所述可控开关件为电子膨胀阀。The method according to any one of claims 1 to 7, wherein the controllable switching member is an electronic expansion valve.
- 一种室外机，包括有室外机换热器，其特征在于，所述室外机换热器包括有并联连接的多组冷媒流路，每组所述冷媒流路包括有若干排串联连接的冷媒管和控制所述冷媒管内是否流经冷媒的可控开关件；所述室外机还包括：An outdoor unit comprising an outdoor unit heat exchanger, wherein the outdoor unit heat exchanger comprises a plurality of sets of refrigerant flow paths connected in parallel, each group of the refrigerant flow paths comprising a plurality of rows of refrigerants connected in series And a controllable switch member for controlling whether the refrigerant flows through the refrigerant tube; the outdoor unit further includes:模式控制单元，用于在进入室外机换热器匹配模式后，控制空调器运行制冷模式或制热模式；a mode control unit, configured to control the air conditioner to operate the cooling mode or the heating mode after entering the outdoor heat exchanger matching mode;可控开关件的开关状态确定单元，用于实时获取室内机盘管温度和压缩机排气温度，根据所述室内机盘管温度和所述压缩机排气温度以及已知的匹配关系确定每组所述冷媒流路中的所述可控开关件的开关状态；所述匹配关系为室内机和室外机匹配时室内机盘管温度及压缩机排气温度满足的匹配关系；a switch state determining unit of the controllable switch member, configured to acquire an indoor unit coil temperature and a compressor exhaust temperature in real time, and determine each according to the indoor unit coil temperature and the compressor exhaust temperature and a known matching relationship a switching state of the controllable switch member in the refrigerant flow path; the matching relationship is a matching relationship between an indoor unit coil temperature and a compressor exhaust temperature when the indoor unit and the outdoor unit are matched;换热器匹配确定单元，用于通过所述可控开关件的开关状态确定允许流经冷媒的所述冷媒流路的数量，将所述允许流经冷媒的所述冷媒流路的数量以及确定的所述可控开关件的开关状态确定为与室内机相匹配的室外机换热器。a heat exchanger matching determining unit, configured to determine, by a switch state of the controllable switch member, a quantity of the refrigerant flow path that is allowed to flow through the refrigerant, and the number and the determination of the refrigerant flow path allowed to flow through the refrigerant The switch state of the controllable switch member is determined to be an outdoor heat exchanger that matches the indoor unit.
- 根据权利要求9所述的室外机，其特征在于，所述多组冷媒流路中，位于端部的冷媒流路所包含的冷媒管的排数大于位于内部的冷媒流路所包含的冷媒管的排数。The outdoor unit according to claim 9, wherein in the plurality of sets of refrigerant flow paths, the number of the refrigerant pipes included in the refrigerant flow path at the end portion is larger than the refrigerant pipe included in the refrigerant flow path located inside. The number of rows.
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