CN104596172A - Refrigeration and air conditioning equipment - Google Patents

Refrigeration and air conditioning equipment Download PDF

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Publication number
CN104596172A
CN104596172A CN201510016352.0A CN201510016352A CN104596172A CN 104596172 A CN104596172 A CN 104596172A CN 201510016352 A CN201510016352 A CN 201510016352A CN 104596172 A CN104596172 A CN 104596172A
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China
Prior art keywords
refrigerant
extension pipe
pipe
volume
calculated
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CN201510016352.0A
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Chinese (zh)
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CN104596172B (en
Inventor
落合康敬
亩崎史武
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三菱电机株式会社
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Priority to CN201080065367.1A priority Critical patent/CN102792108B/en
Priority to CN201510016352.0A priority patent/CN104596172B/en
Publication of CN104596172A publication Critical patent/CN104596172A/en
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Publication of CN104596172B publication Critical patent/CN104596172B/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26Refrigerant piping
    • F24F1/32Refrigerant piping for connecting the separate outdoor units to indoor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties

Abstract

The invention provides a refrigeration air conditioning device, wherein the inner volume of a refrigerant extension pipe can be accurately calculated by using operation data obtained during normal operation, and the calculation of the total quantity of a refrigerant within a refrigerant circuit and the detection of leakage of the refrigerant can be performed with high accuracy. Every time an operation state represented by operation data measured during normal operation satisfies operation data obtaining conditions, the operation data at the moment is obtained as operation data for initial learning; processing of calculating the quantity of the refrigerant except in the extension pipe and the density of the refrigerant in the extension pipe on the basis of the operation data for initial learning is performed; the inner volume of the extension pipe is calculated on the basis of a calculated result data group obtained by the processing; the basic quantity of the refrigerant is calculated on the basis of the calculated inner volume of the extension pipe and the operation data for initial learning. The total quantity of the refrigerant within the refrigerant circuit is calculated on the basis of the calculated inner volume of the extension pipe and the current operation data and then is compared with the basic quantity of the refrigerant to determine whether the refrigerant leaks or not.

Description

冷冻空调装置 Refrigeration and air conditioning equipment

[0001] 本申请是国际申请号为PCT/JP2010/001778、国际申请日为2010年3月12日、于2012年9月12日进入中国国家阶段、申请号为201080065367. 1的发明专利申请"冷冻空调装置"的分案申请。 [0001] This application is an International Application No. PCT / JP2010 / 001778, international filing date of March 12, 2010, to September 12, 2012 to enter the Chinese National Phase Application No. 201080065367.1 of invention patent applications. " refrigeration and air conditioning device "divisional applications.

技术领域 FIELD

[0002] 本发明涉及通过经由制冷剂延长配管连接热源即室外单元与利用侧即室内单元而构成的冷冻空调装置中的、计算制冷剂回路内制冷剂量的功能的高精度化。 [0002] The present invention relates to refrigerating air-conditioning apparatus by extension pipe connected to the heat source via a refrigerant, the outdoor unit and the indoor unit side, i.e., using the configuration of calculating the amount of refrigerant within the refrigerant circuit functions high accuracy.

背景技术 Background technique

[0003] 以往,在通过经由制冷剂延长配管连接热源机即室外单元与利用侧即室内单元而构成的分离型的冷冻空调装置中,存在以下方法,即:进行制冷剂延长配管容积判定运行(在制冷下制冷剂延长配管内密度不同的两种运行),将两种运行状态间的制冷剂延长配管以外的制冷剂增减量除以制冷剂延长配管密度变化量,计算制冷剂延长配管容积,从而计算制冷剂量(例如,参照专利文献1)。 [0003] Conventionally, in a refrigerating and air conditioning apparatus of separate type by extension pipe connecting the heat source unit via a refrigerant, the outdoor unit and the utilization side, i.e., the indoor unit is constituted, there is a method in which: the refrigerant extension pipe volume judging operation ( in the refrigerant at the refrigerant extension pipes of different densities both operating), refrigerant between two operating states prolonged decrease quantity of the refrigerant outside the pipe divided by the refrigerant extension pipe density change quantity calculating refrigerant extension pipe volume thereby calculating the amount of refrigerant (e.g., refer to Patent Document 1).

[0004] 先行技术文献 [0004] PRIOR ART DOCUMENTS

[0005] 专利文献 [0005] Patent Document

[0006] 专利文献1 :日本特开2007 - 163102号公报(摘要) [0006] Patent Document 1: Japanese Patent Application Laid-Open 2007-- Publication No. 163 102 (Abstract)

发明内容 SUMMARY

[0007] 发明所要解决的课题 [0007] Problem to be solved by the invention

[0008] 然而,对于上述的制冷剂延长配管内容积推测方法,由于进行的是冷冻空调装置设置时的制冷剂延长配管内容积计算所需的制冷剂延长配管内容积计算运行这样特殊的运行,所以花费工夫,而且对已设置的冷冻空调装置进行制冷剂延长配管内容积计算运行也困难。 [0008] However, the above-described refrigerant extension pipe volume estimation method, since the refrigerant when the refrigerating air-conditioning apparatus provided extension-pipe desired product computation refrigerant extension pipe volume calculating operation of such a special operation, Therefore, time and effort, but also to refrigerating air-conditioning apparatus has been provided, the refrigerant extension pipe volume calculating operation is also difficult.

[0009] 本发明是鉴于上述问题而做出的,其目的在于得到可利用通常运行时所获得的运行数据来准确地计算制冷剂延长配管的内容积、可高精度地进行制冷剂回路内的制冷剂总量的计算以及制冷剂泄漏检测的冷冻空调装置。 [0009] The present invention has been made in view of the above problems, an object of operating data obtained during normal operation may be utilized to accurately obtained by calculating the refrigerant extension pipe internal volume, can be accurately performed in the refrigerant circuit calculating the total amount of the refrigerant and the refrigerating and air conditioning apparatus refrigerant leak detection.

[0010] 用于解决课题的手段 [0010] Means for Solving the Problem

[0011] 本发明所涉及的冷冻空调装置具备:制冷剂回路,该制冷剂回路由制冷剂延长配管连接作为热源单元的室外单元与作为利用侧单元的室内单元;测量部,该测量部作为运行数据测量制冷剂回路的主要部分的温度和压力;演算部,该演算部具有获取运行数据时的运行数据获取条件,每当在通常运行中由测量部测量到的运行数据所表示的运行状态成为满足运行数据获取条件的状态时,获取此时的运行数据作为初期学习用的运行数据,反复进行这样的处理,依次获取多个初期学习用的运行数据,基于各个运行数据来计算延长配管以外的制冷剂量和延长配管密度的处理,基于通过该计算结果数据组来计算延长配管内容积,基于该计算出的延长配管内容积和初期学习用的运行数据来计算作为来自制冷剂回路的制冷剂泄漏的判断基准的基准制冷剂量;存储 [0011] The refrigerating air-conditioning apparatus according to the present invention includes: a refrigerant circuit, the refrigerant circuit is configured by the refrigerant extension pipe connected to a heat source unit outdoor unit and an indoor unit using the side unit; measuring unit, the measuring unit as a run temperature and pressure of a main part of the measurement data of the refrigerant circuit; calculating portion, the arithmetic operation unit having operation data acquisition data acquisition condition, whenever the operating state measured by the measuring portion during normal operation becomes operational data represented by state acquisition condition is satisfied operation data, operation data acquiring operation data at that time as an initial learning repeatedly performing such processing, a plurality of sequentially acquiring initial learning operation data based on each operation data to calculate the extension pipe outside refrigerant amount and the extension pipe density processing is calculated based on calculated by the calculation result data set extension pipe volume, based on the calculated extension pipe volume and the initial learning operation data as the refrigerant from the refrigerant circuit leaks reference refrigerant quantity determination criterion; storing 部,该存储部存储延长配管内容积和基准制冷剂量;以及判定部,该判定部基于存储在存储部中的延长配管内容积和在通常运行中由测量部测量到的运行数据来判定有无制冷剂泄漏。 Unit, the storage unit stores the extension pipe volume and the reference refrigerant quantity; and a determination section, the determination section based on the extension pipe volume and measured by the measurement unit in normal operation the operation data stored in the storage unit to determine whether refrigerant leaks.

[0012] 发明的效果 [0012] Effect of the Invention

[0013] 根据本发明,即使针对已设置的设备,也能够利用通常运行时所获得的运行数据来计算制冷剂延长配管内容积而不进行特别的运行。 [0013] According to the present invention, even for a device has been set, it is possible to use the operational data obtained during normal operation to calculate the refrigerant volume extension pipe without any special operation. 另外,由于基于由多个延长配管以外的制冷剂量和多个延长配管密度组成的计算结果数据组来计算延长配管内容积,所以,能够降低测量部的测量误差给延长配管内容积的计算结果带来的影响,能够高精度地计算延长配管内容积。 Further, since the calculation based on the amount of refrigerant other than a plurality of extension pipes and a plurality of extension pipe Density Composition resultant data set to calculate the extension pipe volume, it is possible to reduce the measurement error measuring unit to extend the calculation result pipe volume with Effects come, can be precisely calculated volume extension pipe. 从而,能够高精度地进行制冷剂回路内的制冷剂总量的计算以及制冷剂泄漏检测。 Thus, it is possible to calculate the total amount of the refrigerant and a refrigerant leakage detection in the refrigerant circuit with high accuracy.

附图说明 BRIEF DESCRIPTION

[0014] 图1是本发明的一个实施方式所涉及的冷冻空调装置1的制冷剂回路图。 [0014] FIG. 1 is a refrigerant circuit diagram of a refrigerating air-conditioning apparatus of the present embodiment of the invention 1.

[0015] 图2是本发明的一个实施方式所涉及的冷冻空调装置1的冷冻空调装置控制部3 周边构成的图。 [0015] FIG. 2 is a refrigerating and air conditioning apparatus of an embodiment of the present invention relates to refrigerating air-conditioning apparatus 1 is configured the control unit 3 of FIG periphery.

[0016] 图3是本发明的一个实施方式所涉及的冷冻空调装置1的制冷运行时的ph线图。 [0016] FIG. 3 is a ph diagram of a refrigerating apparatus according to an embodiment of the refrigerating air conditioner of the present invention relates to a runtime.

[0017] 图4是本发明的一个实施方式所涉及的冷冻空调装置1的制热运行时的ph线图。 [0017] FIG. 4 is a ph diagram refrigerating air-conditioning apparatus of an embodiment of the present invention relates to a heating operation.

[0018] 图5是本发明的一个实施方式所涉及的冷冻空调装置1的制冷剂泄漏检测方法的流程图。 [0018] FIG. 5 is a flowchart of a refrigerating air-conditioning apparatus of the present embodiment of the invention relates to a refrigerant leakage detection method.

[0019] 图6是本发明的一个实施方式所涉及的冷冻空调装置1的初期学习的流程图。 [0019] FIG. 6 is a flowchart of a refrigerating air-conditioning apparatus of the present embodiment of the invention an initial learning.

[0020]图7是用于说明对应于延长配管密度PP、延长配管的制冷剂量MP和延长配管以夕卜的制冷剂量MythOTP相对于制冷剂总量M的比例变化的图。 [0020] FIG. 7 is a density corresponding to the extension pipe PP, MP extension pipe refrigerant quantity and the total amount of the extension pipe to the refrigerant of the rate of change of M Bu Xi phase refrigerant quantity MythOTP FIG.

[0021] 图8(a)是与图7的延长配管的制冷剂量MP对应的线图,(b)是与图7的延长配管以外的制冷剂量MythOTP对应的线图。 [0021] FIG. 8 (a) is a diagram MP refrigerant quantity corresponding to the extension pipe of FIG. 7, (b) is a diagram other than the extension pipe of FIG. 7 corresponding to the amount of refrigerant MythOTP.

[0022] 图9是示出了表示本发明的一个实施方式所涉及的冷冻空调装置1的制冷剂延长配管密度PP与制冷剂延长配管以外的制冷剂量MuthOTP之间的关系的近似线的图。 [0022] FIG. 9 is a diagram showing a refrigerating and air-conditioning apparatus showing the present invention in an embodiment of an extension pipe density PP refrigerant extension approximate line showing the relationship between the amount of refrigerant than the pipe MuthOTP.

[0023] 图10是表示本发明的一个实施方式所涉及的冷冻空调装置1的冷凝器23的制冷剂状态的概况的图。 [0023] FIG. 10 is a diagram showing an outline of a state of the refrigerant in the condenser 23 of the refrigerating and air conditioning apparatus according to an embodiment of the present invention. FIG.

[0024] 图11是表示本发明的一个实施方式所涉及的冷冻空调装置1的蒸发器42A、42B 的制冷剂状态的概况的图。 [0024] FIG. 11 is a diagram showing an outline of the state of refrigerant in a refrigerating air-conditioning apparatus of the present embodiment of the invention the evaporator 1 42A, 42B of FIG.

具体实施方式 Detailed ways

[0025] 以下,基于附图对本发明所涉及的冷冻空调装置的实施方式进行说明。 [0025] Hereinafter, embodiments based on the drawings refrigerating and air conditioning apparatus according to the present invention will be described.

[0026] <设备的构成> [0026] <constituent equipment>

[0027] 图1是本发明的一个实施方式所涉及的冷冻空调装置1的构成图。 [0027] FIG. 1 is a block diagram of a refrigerating air-conditioning apparatus of the present embodiment of the invention relates to 1. 冷冻空调装置1是通过进行蒸气压缩式的冷冻循环运行而被使用于高楼等的室内的制冷制热的装置。 Refrigerating and air conditioning apparatus 1 is in the cooling and heating of indoor building or the like by performing a vapor compression refrigeration cycle operation is used. 冷冻空调装置1主要具备:作为热源单元的室外单元2、与其并联连接的多台(本实施方式中为2台)作为利用单元的室内单元4A、4B、液体制冷剂延长配管6和气体制冷剂延长配管7。 Refrigerating air-conditioning apparatus 1 mainly includes: a plurality of the outdoor unit heat source unit 2, connected in parallel therewith (in this embodiment is 2) an indoor unit using the units 4A, 4B, the liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe 7. 液体制冷剂延长配管6是连接室外单元2与室内单元4A、4B而供液体制冷剂通过的配管,通过连接液体主管6A、液体支管6a、6b和分配器51a而构成。 Liquid refrigerant extension pipe 6 is connected to the outdoor unit 2 and the indoor units 4A, 4B and supply the liquid refrigerant passes through the pipe, is formed by connecting a liquid director. 6A, the liquid branch pipes 6a, 6b, and the dispenser 51a. 另外,气体制冷剂延长配管7是连接室外单元2与室内单元4A、4B而供气体制冷剂通过的配管,通过连接气体主管7A、气体支管7a、7b和分配器52a而构成。 Further, the gas refrigerant extension pipe 7 is connected to the outdoor unit 2 and the indoor units 4A, 4B and supply the gas through the refrigerant pipe, constituted by connecting the gas main. 7A, the gas branch pipes 7a, 7b and the dispenser 52a.

[0028](室内单元) [0028] (indoor unit)

[0029] 室内单元4A、4B通过埋设或吊设等方式设置在高楼等的室内的顶棚,或者通过壁挂等方式设置在室内的壁面。 [0029] The indoor units 4A, 4B of the building or the like provided in the indoor ceiling by embedding, or suspended from, etc., or is provided by the wall in the room wall or the like. 室内单元4A、4B利用液体制冷剂延长配管6和气体制冷剂延长配管7与室外单元2连接,构成制冷剂回路10的一部分。 Indoor units 4A, 4B by the liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe 7 connected to the outdoor unit 2, constituting the refrigerant circuit 10.

[0030] 接着,对室内单元4A、4B的构成进行说明。 [0030] Next, the configuration of the indoor units 4A, 4B will be described. 另外,由于室内单元4A、4B是同样的构成,所以在此仅对室内单元4A的构成进行说明。 Further, since the indoor unit 4A, 4B is the same configuration, so only constituting the indoor unit 4A will be described. 室内单元4B的构成与替代表示室内单元4A的各部分的A的附图标记而标注了B的附图标记的构成相当。 Alternatively the indoor units. 4B and reference numeral A of each portion of the indoor unit 4A is denoted by the reference numerals of the constituent B fairly.

[0031] 室内单元4A主要具有构成制冷剂回路10的一部分的室内侧制冷剂回路10a(室内单元4B中为室内侧制冷剂回路10b)。 [0031] The indoor unit 4A constituting the refrigerant circuit mainly includes an indoor side refrigerant circuit 10a of the portion 10 (the indoor unit 4B is an indoor side refrigerant circuit 10b). 该室内侧制冷剂回路10a主要具有作为膨胀机构的膨胀阀41A、和作为利用侧热交换器的室内热交换器42A。 The indoor side refrigerant circuit 10a mainly includes an expansion valve mechanism 41A, and an indoor heat utilization side heat exchanger 42A.

[0032] 在本实施方式中,膨胀阀41A是为了进行在室内侧制冷剂回路10A内流通的制冷剂的流量的调节等而与室内热交换器42A的液体侧连接的电动膨胀阀。 [0032] In the present embodiment, the expansion valve 41A to adjust the flow rate in the flow of refrigerant within the indoor-side refrigerant circuit 10A like electric expansion valve connected to the liquid side of the indoor heat exchanger 42A.

[0033] 在本实施方式中,室内热交换器42A是由传热管和多个翅片构成的交叉翅片式的翅片管型热交换器,是在制冷运行时作为制冷剂的蒸发器发挥功能来冷却室内空气、在制热运行时作为制冷剂的冷凝器发挥功能来加热室内空气的热交换器。 [0033] In the present embodiment, the indoor heat exchanger 42A is a cross-fin type fin-tube heat exchanger configured by heat transfer tubes and a plurality of fins, it is as an evaporator of the refrigerant during the cooling operation functions to cool indoor air, and functions as a refrigerant condenser to heat indoor air exchanger in the heating operation.

[0034] 在本实施方式中,室内单元4A具有用于将室内空气向单元内吸入并在室内热交换器42A与制冷剂进行了热交换之后作为供给空气向室内供给的、作为送风风扇的室内风扇43A。 [0034] In the present embodiment, the indoor unit 4A has a suction air into the indoor unit, and as the supply air supplied to the room after the indoor heat exchangers 42A exchanged heat with the refrigerant, a blower fan indoor fan 43A. 室内风扇43A是能够改变向室内热交换器42A供给的空气的风量的风扇,在本实施方式中,是由DC风扇马达驱动的离心风扇或多翼风扇等。 An indoor fan 43A is capable of changing the amount of air supplied to the indoor heat exchanger fan 42A, in the present embodiment, is driven by a DC fan motor or a centrifugal fan-blade fan and the like.

[0035] 另外,在室内单元4A设有各种传感器。 [0035] Further, in the indoor unit 4A is provided with various sensors. 在室内热交换器42A、42B的气体侧,设有检测制冷剂的温度(即,与制热运行时的冷凝温度Tc或者制冷运行时的蒸发温度Te对应的制冷剂温度)的气体侧温度传感器33f、33i。 In the gas side of the indoor heat exchanger 42A, 42B is provided with a refrigerant temperature detector (i.e., the condensation temperature during the heating operation and the evaporation temperature Tc of the cooling operation or the refrigerant temperature Te corresponding to) the gas-side temperature sensor 33f, 33i. 在室内热交换器42A、42B的液体侧,设有检测制冷剂的温度Teo的液体侧温度传感器33e、33h。 In the liquid side of the indoor heat exchangers 42A, 42B, and provided with a liquid side temperature sensor 33e detects a temperature Teo of the refrigerant, 33h. 在室内单元4A、4B的室内空气的吸入口侧,设有检测流入到单元内的室内空气的温度(即,室内温度I;)的室内温度传感器33g、 33j。 In the indoor air of the indoor unit 4A, 4B side of the suction port, with the detected temperature of the indoor air flows in the cell (i.e., the I indoor temperature;) of the indoor temperature sensor 33g, 33j. 在本实施方式中,上述336、33厂33§、3311、331、33]_的各温度传感器由热敏电阻构成。 In the present embodiment, the aforementioned plant 336,33 33§, 3311,331,33] _ each temperature sensor comprises a thermistor.

[0036] 另外,室内单元4A、4B具有对构成室内单元4A、4B的各部分的动作进行控制的室内侧控制部32a、32b。 [0036] The indoor unit 4A, 4B having, operation of each portion constituting the indoor unit 4A and 4B indoor side control unit controls 32a, 32b. 并且,室内侧控制部32a、32b具有设置用以进行室内单元4A、4B的控制的微型计算机或存储器等,能在与用于分别操作室内单元4A、4B的遥控器(未图示)之间进行控制信号等的互换、或是经由传送线在与室外单元2之间进行控制信号等的互换。 Further, the indoor side control unit 32a, 32b having a microcomputer or a memory or the like provided for controlling the indoor units 4A, 4B of the can (not shown) for respectively operating the indoor unit and the remote controller 4A, 4B between to interchange control signals, or the transmission line to interchange control signals between the outdoor unit 2 via.

[0037](室外单元) [0037] (outdoor unit)

[0038] 室外单元2设置在高楼等的室外,通过液体主管6A、液体支管6a、6b以及气体主管7A、气体支管7a、7b与室内单元4A、4B连接,在与室内单元4A、4B之间构成制冷剂回路10。 [0038] The outdoor unit 2 is installed outside buildings and the like, 6A, liquid branch pipes 6a, 6b and the gas main. 7A, the gas branch pipes 7a, 7b and the indoor units 4A, 4B are connected by the liquid main pipe, between the indoor units 4A, 4B 10 constitute a refrigerant circuit.

[0039] 接着,对室外单元2的构成进行说明。 [0039] Next, the configuration of the outdoor unit 2 will be described. 室外单元2主要具有构成制冷剂回路10的一部分的室外侧制冷剂回路l〇c。 The outdoor unit 2 mainly includes an outdoor side refrigerant circuit constituting the refrigerant circuit l〇c portion 10. 该室外侧制冷剂回路10c主要具有压缩机21、四通阀22、 室外热交换器23、蓄能器24、过冷却器26、液体侧关闭阀28和气体侧关闭阀29。 This outdoor side refrigerant circuit 10c mainly has a compressor 21, a four-way valve 22, outdoor heat exchanger 23, an accumulator 24, a subcooler 26, the liquid side closing valve 28 and the gas side closing valve 29.

[0040] 压缩机21是能够改变运行容量的压缩机,在本实施方式中,是由利用变换器控制频率F的马达进行驱动的容积式压缩机。 [0040] The compressor 21 is a compressor whose operation capacity can be varied, in this embodiment, is a positive displacement compressor by controlling the motor using the inverter frequency F is driven. 在本实施方式中,压缩机21仅为1台,但并不限定于此,也可以对应于室内单元的连接台数等并联连接2台以上的压缩机。 In the present embodiment, only one compressor stage 21, but is not limited thereto, the compressor may be connected in parallel to a corresponding number of other units connected to the indoor units 2 or more.

[0041] 四通阀22是用于切换制冷剂流动方向的阀。 [0041] is a four-way valve 22 for switching the direction of refrigerant flow valve. 四通阀22在制冷运行时如实线所示那样进行切换,连接压缩机21的排出侧与室外热交换器23的气体侧,并且连接蓄能器24 与气体主管7A侧。 The four-way valve 22 during the cooling operation is switched as shown in solid lines, a compressor connected to the gas side of the outdoor heat exchanger 21 and the discharge side 23, and the accumulator 24 is connected to the gas main pipe 7A side. 由此,室外热交换器23作为由压缩机21压缩的制冷剂的冷凝器发挥功能,另外,室内热交换器42A、42B作为蒸发器发挥功能。 Accordingly, the outdoor heat exchanger 23 as compressed by the compressor 21 of the refrigerant condenser functions Further, the indoor heat exchangers 42A, 42B to function as an evaporator. 四通阀22在制热运行时如四通阀的点线所示那样进行切换,连接压缩机21的排出侧与气体主管7A,并且连接蓄能器24与室外热交换器23的气体侧。 The four-way valve 22 of the four-way valve dotted line in the heating operation is performed as shown in the time switch, connecting the compressor discharge side of the gas main pipe 7A 21 and 24 connected to the gas side of the outdoor heat exchanger 23 to the accumulator. 由此,室内热交换器42A、42B作为由压缩机21压缩的制冷剂的冷凝器发挥功能,另外,室外热交换器23作为蒸发器发挥功能。 Thereby, the indoor heat exchangers 42A, 42B compressed by the compressor 21 as a condenser of the refrigerant functions Further, the outdoor heat exchanger 23 functions as an evaporator.

[0042] 在本实施方式中,室外热交换器23是由传热管与多个翅片构成的交叉翅片式的翅片管型热交换器。 [0042] In the present embodiment, the outdoor heat exchanger 23 is a cross fin type fin-and-tube heat exchanger by a heat transfer tube and a plurality of fins. 室外热交换器23如上述那样,在制冷运行时作为制冷剂的冷凝器发挥功能,在制热运行时作为制冷剂的蒸发器发挥功能。 Outdoor heat exchanger 23 as described above, during the cooling operation as a refrigerant condenser functions in the heating operation as a refrigerant evaporator functions. 室外热交换器23的气体侧与四通阀22 连接,液体侧与液体主管6A连接。 Gas side of the outdoor heat exchanger 23 and the four-way valve 22 is connected to the liquid side of the liquid main pipe 6A is connected.

[0043] 在本实施方式中,室外单元2具有用于将室外空气向单元内吸入并在室外热交换器23中与制冷剂进行了热交换之后向室外排出的、作为送风风扇的室外风扇27。 [0043] In the present embodiment, the outdoor unit 2 has an outdoor fan for outdoor air to be sucked into the unit and the heat exchange with the refrigerant in the outdoor heat exchanger 23 after being discharged to the outside as a ventilation fan 27. 该室外风扇27是能够改变向室外热交换器23供给的空气的风量的风扇,在本实施方式中,是通过由DC风扇马达构成的马达进行驱动的螺旋桨式风扇等。 The outdoor fan 27 is capable of changing the amount of air supplied to the outdoor heat exchanger fan 23, in the present embodiment, the motor is driven by a DC fan motor composed of a propeller fan or the like.

[0044] 蓄能器24是连接在四通阀22与压缩机21之间、能够根据室内单元4A、4B的运行负荷的变动等来存储在制冷剂回路10内产生的剩余制冷剂的容器。 [0044] The accumulator 24 is connected between the four-way valve 22 and the compressor 21, the remaining containers can be generated in the refrigerant 10. 4A, fluctuation or the like of the operating load of the indoor unit 4B to store the refrigerant circuit.

[0045] 过冷却器26是双重管式的热交换器,设置用以对在室外热交换器23中冷凝之后送至膨胀阀41A、41B的制冷剂进行冷却。 [0045] The subcooler 26 is a double-pipe type heat exchanger, an expansion valve arranged to supplied to 41A, 41B after the refrigerant condensed in the outdoor heat exchanger 23 for cooling. 过冷却器26在本实施方式中连接在室外热交换器23与液体侧关闭阀28之间。 Subcooler 26 is connected in the present embodiment, the outdoor heat exchanger 23 and the liquid side closing valve 28.

[0046] 在本实施方式中,设有作为过冷却器26的冷却源的旁通回路71。 [0046] In the present embodiment, a bypass circuit 71 as a cooling source of the cooler 26. 另外,在以下的说明中,将从制冷剂回路10除去了旁通回路71的部分称为主制冷剂回路10z。 In the following description, the refrigerant circuit 10 is removed from the portion of the bypass circuit 71 is referred to as a main refrigerant circuit 10z.

[0047] 旁通回路71与主制冷剂回路10z连接,以便使从室外热交换器23送向膨胀阀41A、41B的制冷剂的一部分从主制冷剂回路10z分支并向压缩机21的吸入侧返回。 [0047] The bypass circuit 71 is connected to the main refrigerant circuit 10z, and so from the main refrigerant circuit 10z is branched from a portion of the outdoor heat exchanger 23 is sent to the refrigerant expansion valve 41A, 41B of the compressor suction side 21 return. 具体来讲,旁通回路71连接成,使从室外热交换器23送向膨胀阀41A、41B的制冷剂的一部分从过冷却器26与液体侧关闭阀28之间的位置分支,经由由电动膨胀阀构成的旁通流量调整阀72和过冷却器26向压缩机21的吸入侧返回。 Specifically, the bypass 71 is connected to the outdoor heat exchanger from the through portion 23 is sent to the refrigerant expansion valve 41A, 41B between the position of the branch valve 28 and the liquid side closing cooler 26, via the electric expansion valve bypass flow control valve 72 and the subcooler 26 is returned 21 to the suction side of the compressor. 由此,从室外热交换器23送至室内膨胀阀41A、41B的制冷剂,在过冷却器26中,利用由旁通流量调整阀72减压之后的流经旁通回路71的制冷剂进行冷却。 Accordingly, the outdoor heat exchanger 23 to the indoor expansion valves 41A, 41B of the refrigerant in the subcooler 26 by the refrigerant flowing through the bypass circuit 71 after the bypass flow valve 72 is adjusted by the reduced pressure cool down. 即,过冷却器26通过旁通流量调整阀72的开度调节进行能力控制。 That is, the subcooler 26 is adjusted by adjusting the opening degree of the bypass flow valve 72 to control the capacity.

[0048] 液体侧关闭阀28以及气体侧关闭阀29是设在与外部的设备、配管(具体来讲是液体主管6A以及气体主管7A)连接的连接口的阀。 [0048] The liquid side closing valve 28 and the gas side closing valve device 29 is provided with an external piping (specifically, liquid and gas competent competent 6A 7A) connected to the connection port valve.

[0049] 另外,在室外单元2设有多个压力传感器和温度传感器。 [0049] Further, in the outdoor unit 2 is provided with a plurality of pressure sensors and temperature sensors. 作为压力传感器,设置有检测压缩机21的吸入压力(低压制冷剂压力)Ps的吸入压力传感器34a、和检测压缩机21 的排出压力(高压制冷剂压力)Pd的排出压力传感器34b。 As a pressure sensor is provided for detecting the compressor suction pressure (low-pressure refrigerant pressure) Ps of the suction pressure 21 sensors 34a, 34b and a discharge pressure sensor sensing a compressor discharge pressure (high pressure refrigerant pressure) Pd-21.

[0050] 温度传感器由热敏电阻构成,作为温度传感器,设置有吸入温度传感器33a、排出温度传感器33b、热交换温度传感器33k、液体侧温度传感器331、液管温度传感器33d、旁通温度传感器33z和室外温度传感器33c。 [0050] The temperature sensor comprises a thermistor, as the temperature sensor, a suction temperature sensor 33a, the discharge temperature sensor 33b, the heat exchange temperature sensor 33K, the liquid side temperature sensor 331, the liquid pipe temperature sensor 33d, the bypass temperature sensor 33z and the outdoor temperature sensor 33c.

[0051] 吸入温度传感器33a设在蓄能器24与压缩机21之间的位置上,检测压缩机21的吸入温度Ts。 [0051] The suction temperature sensor 33a is provided at a position between the accumulator 24 and the compressor 21, the suction temperature Ts of the compressor 21 detected in the. 排出温度传感器33b检测压缩机21的排出温度Td。 Discharge temperature sensor 33b detects the discharge temperature Td of the compressor 21. 热交换温度传感器33k 检测在室外热交换器23内流通的制冷剂的温度。 33k heat exchange temperature sensor detects the temperature of the refrigerant flowing in the outdoor heat exchanger 23. 液体侧温度传感器331设置在室外热交换器23的液体侧,检测室外热交换器23的液体侧的制冷剂温度。 The liquid side temperature sensor 331 provided in the liquid side of the outdoor heat exchanger 23, the temperature of the refrigerant liquid side of the outdoor heat exchanger 23 is detected. 液管温度传感器33d设置在过冷却器26的主制冷剂回路10z侧的出口,检测制冷剂的温度。 The liquid pipe temperature sensor 33d is disposed through the outlet, the refrigerant temperature detected main refrigerant circuit side of the cooler 26 of 10z. 旁通温度传感器33z 检测在旁通回路71的过冷却器26出口流通的制冷剂的温度。 33z bypass temperature sensor detects the temperature of the refrigerant through the bypass circuit 71 of the cooler 26 the outlet flow. 室外温度传感器33c设置在室外单元2的室外空气的吸入口侧,检测向单元内流入的室外空气的温度。 Outdoor temperature sensor 33c disposed at the outdoor air suction port of the outdoor unit 2 side, the detected temperature of the outdoor air flowing into the unit.

[0052] 另外,室外单元2具有对构成室外单元2的各要素的动作进行控制的室外侧控制部31。 [0052] Further, the outdoor unit 2 includes the operation of each element constituting the outdoor unit 2. Additionally, the outdoor side control unit 31 controls. 并且,室外侧控制部31具有设置用以进行室外单元2的控制的微型计算机、存储器、 和控制马达的变换器回路等。 Further, the outdoor side control unit 31 has an inverter circuit like a microcomputer is provided to control the outdoor unit 2, a memory, and controlling the motor. 并且,室外侧控制部31构成为在室内单元4A、4B的室内侧控制部32a、32b之间经由传送线进行控制信号等的互换。 Further, the outdoor control unit 31 is configured to control the indoor side unit 4A, 4B of 32a, 32b between the control signals and the like via a transmission line in the indoor unit interchange. 室外侧控制部31与室内侧控制部32a、32b-起构成进行冷冻空调装置1整体的运行控制的控制部3。 The control chamber 31 and the outer portion 32a, 32b- unit configured from the indoor side control section 3 controls the refrigerating air-conditioning apparatus 1 controls the entire operation.

[0053] 图2是冷冻空调装置1的控制方框图。 [0053] FIG 2 is a control block diagram of a refrigerating air-conditioning apparatus. 控制部3连接成能够接收压力传感器34a、 34b、温度传感器33a〜331、33z的检测信号,而且,与各种设备以及阀连接以便能够基于这些检测信号等控制各种设备(压缩机21、风扇27、风扇43A、43B)以及阀(四通阀22、流量调整阀(液体侧关闭阀28、气体侧关闭阀29、旁通流量调整阀72)、膨胀阀41A、41B)。 The control unit 3 is connected to be capable of receiving the pressure sensor 34a, 34b, the detection signal of the temperature sensor 33a~331,33z, and, connected to various equipment and valves so as to be based on these detection signals and the like to control various equipment (compressor 21, the fan 27, the fan 43A, 43B) and a valve (four-way valve 22, the flow regulating valve (the liquid side closing valve 28, the gas side closing valve 29, the bypass flow rate adjusting valve 72), an expansion valve 41A, 41B).

[0054] 另外,控制部3具备测定部3a、演算部3b、存储部3c、判定部3d、驱动部3e、显示部3f、输入部3g以及输出部3h。 [0054] Further, the control unit 3 includes a measuring unit 3a, 3B arithmetic unit, a storage unit. 3C, the determination unit 3d, the drive unit 3E, display unit 3f, 3g input section and an output section 3h. 测定部3a,是测定来自压力传感器34a、34b以及温度传感器33a〜331、33z的信息的部位,是与压力传感器34a、34b以及温度传感器33a〜331、33z- 起构成测量部的部位。 Measuring portion 3a, is measured 34a, 34b and the temperature sensor portion 33a~331,33z information from the pressure sensor, is 34a, 34b and a temperature sensor measuring portion configured 33a~331,33z- portion from the pressure sensor. 演算部3b,是基于由测定部3a测定的信息等来计算制冷剂延长配管的内容积、或计算成为来自制冷剂回路10的制冷剂泄漏的判断基准的基准制冷剂量的部位。 3B calculation portion, based on the information or the like is measured by the measuring portion 3a calculates the refrigerant extension pipe volume, or calculating a reference refrigerant quantity determination reference from the refrigerant circuit 10 in the refrigerant leak site. 存储部3c,是存储由测定部3a测定的值或由演算部3b演算的值、或是存储后述的内容积数据或初期充填量、或是存储来自外部的信息的部位。 A storage unit. 3C, is a portion storing a value measured by the measuring portion 3a or 3b by the calculation value calculation section, or product data or contents stored in the initial charge amount described later, or the stored information from the outside. 判定部3d,是比较存储部3c所存储的基准制冷剂量与由演算计算出的制冷剂回路10的制冷剂总量来判定有无制冷剂泄漏的部位。 Determination section 3d, a reference refrigerant quantity stored in the comparison memory unit 3c and calculated by calculating the total amount of the refrigerant of the refrigerant 10 to determine whether the refrigerant leakage portion loops.

[0055] 驱动部3e,是进行冷冻空调装置1的进行驱动的要素即压缩机马达、阀、风扇马达的控制的部位。 [0055] The driving unit 3E, frozen portion is the air conditioning apparatus 1 of the drive control element i.e. the compressor motor, the valve, fan motor. 显示部3f,是在制冷剂充填结束的情况或检测到制冷剂泄漏的情况等下显示该信息并向外部进行通知、或显示在冷冻空调装置1的运行方面产生的异常的部位。 Display section 3f, is a case where the refrigerant filled in the end of the case or the like for detecting refrigerant leakage to the outside the information for the notification, or displaying an abnormality generated in the operation of a portion of the refrigerating air-conditioning apparatus aspect. 输入部3g,是进行各种控制用的设定值的输入或变更、或是输入制冷剂充填量等的外部信息的部位。 An input unit 3g, is input or change various control setting value, or the external information input part of the refrigerant filling amount and the like. 输出部3h,是将由测定部3a测定的测定值或由演算部3b演算的值向外部输出的部位。 Output section 3h, is the measurement value measured by the measurement portion 3a or the portion 3b by the calculation value of the calculation unit output to the outside. 输出部3h可以是用于与外部装置进行通信的通信部,冷冻空调装置1构成为能够将表示制冷剂泄漏的检测结果的制冷剂泄漏有无数据通过通信线等向远方的管理中心等发送。 3h output unit may be a communication portion for performing communication with an external device, refrigerating and air conditioning apparatus 1 is configured to be capable of indicating the result of detection of refrigerant leak or absence of refrigerant leakage remote data transmission to the management center or the like through the communication line and the like.

[0056] 如此构成的控制部3通过四通阀22切换作为通常运行的制冷运行和制热运行地进行运行,而且根据各室内单元4A、4B的运行负荷进行室外单元2以及室内单元4A、4B的各设备的控制。 [0056] The control unit thus constituted by the four-way valve 22 is switched as the cooling operation and the heating operation to the normal operation of the operation, and the outdoor unit 2 and the indoor units 4A, 4B according to the operation load of the indoor units 4A, 4B of controlling each device. 另外,控制部3进行后述的制冷剂泄漏检测处理。 In addition, refrigerant control section 3 performs leak detection process described later.

[0057](制冷剂延长配管) [0057] (refrigerant pipe extension)

[0058] 制冷剂延长配管是连接室外单元2与室内单元4A、4B、用于使冷冻空调装置1内的制冷剂循环所需的配管。 [0058] extension refrigerant pipe is connected to the outdoor unit 2 and the indoor units 4A, 4B, refrigerating and air conditioning system required for a refrigerant circulating in a pipe.

[0059] 制冷剂延长配管是具有液体制冷剂延长配管6(液体主管6A、液体支管6a、6b)和气体制冷剂延长配管7(气体主管7A、气体支管7a、7b)、在将冷冻空调装置1设置在高楼等的设置场所时在现场施工的制冷剂配管。 [0059] The refrigerant extension pipe in the refrigerating air-conditioning apparatus having a liquid refrigerant extension pipe 6 (competent 6A liquid, the liquid branch pipes 6a, 6b) and the gas refrigerant extension pipe 7 (gas main. 7A, the gas branch pipes 7a, 7b), 1 disposed in the building or the like is provided in place of the construction site refrigerant pipe. 使用根据室外单元2与室内单元4A、4B的组合分别确定的管径的制冷剂延长配管。 Outdoor unit 2 and the indoor units 4A, 4B, respectively, a combination of the determined according to the diameter of the refrigerant pipe extension.

[0060] 对于制冷剂延长配管长度因现场的设置条件而有所不同。 [0060] extension to the refrigerant pipe length provided by the site conditions vary. 为此,由于制冷剂延长配管的内容积因设置现场而有所不同,所以无法在出货时进行预先输入。 For this reason, since the refrigerant extension pipe volume due to the installation site varies, it can not be previously input at the time of shipment. 从而,需要对每个现场计算制冷剂延长配管的内容积。 Thus, the need to calculate the refrigerant volume for each field extension pipe. 制冷剂延长配管的内容积的计算方法的详细情况将在后叙述。 The method of calculating the refrigerant volume of the extension pipe of the details will be described later.

[0061] 在本实施方式中,在1台室外单元2和2台室内单元4A、4B的连接中,使用分配器51a、52a和制冷剂延长配管(液体制冷剂延长配管6以及气体制冷剂延长配管7)。 [0061] In the present embodiment, the connection 1 to a single outdoor unit 2 and two indoor units 4A, 4B, the dispenser 51a, 52a and the refrigerant extension pipe (liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe 7). 对于液体制冷剂延长配管6,由液体主管6A连接室外单元2与分配器51a之间,由液体支管6a、6b 连接分配器51a与各室内单元4A、4B之间。 For the liquid refrigerant extension pipe 6, between the dispenser 2 and the outdoor unit 51a is connected by a liquid main pipe. 6A, the liquid branch pipe 6a, 6b connection 4A, 4B and each of the indoor units 51a dispenser. 对于气体制冷剂延长配管7,由气体支管7a、7b 连接室内单元4A、4B与分配器52a之间,由气体主管7A连接分配器52a与室外单元2之间。 The gas refrigerant pipe 7 extended from the gas branch pipe 7a, 7b connected to the indoor unit. 4A, 4B and between the distributor 52a, a gas main pipe 7A between the dispenser 2 is connected to the outdoor unit 52a. 在本实施方式中,分配器51a、52a虽使用了T字管,但并不限于此,也可以使用集管。 In the present embodiment, the dispenser 51a, 52a, although using the T-tube, but is not limited thereto, the manifold may also be used. 另外, 在连接多台室内单元的情况下,既可以使用多个T字管地进行分配,也可以使用集管。 Further, in the case of connecting a plurality of indoor units, may be used to perform a plurality of T-shaped distribution pipes, the manifold may also be used.

[0062] 如上所述,连接室内侧制冷剂回路10a、10b、室外侧制冷剂回路10c和制冷剂延长配管(液体制冷剂延长配管6和气体制冷剂延长配管7),构成制冷剂回路10。 [0062] As described above, connecting the indoor side refrigerant circuit 10a, 10b, the outdoor side refrigerant circuit 10c and the refrigerant extension pipe (liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe 7), constituting the refrigerant circuit 10. 冷冻空调装置1具有制冷剂回路10和旁通回路71。 Refrigerating air-conditioning apparatus 1 has a refrigerant circuit 10 and the bypass 71. 并且,本实施方式的冷冻空调装置1利用由室内侧控制部32a、32b和室外侧控制部31构成的控制部3,由四通阀22切换制冷运行以及制热运行地进行运行,而且,根据各室内单元4A、4B的运行负荷来进行室外单元2以及室内单元4A、4B的各设备的控制。 Further, the refrigerating and air conditioning apparatus of the present embodiment 1 by the control unit constituted by the indoor side control unit 32a, 32b and the outdoor side control section 313, a four-way valve 22 to switch the cooling operation and the heating operation performed operation, and, in accordance with various operation load of the indoor unit 4A, 4B to the outdoor unit 2 and the indoor units 4A, 4B of controlling each device.

[0063] <冷冻空调装置1的动作> [0063] <1 refrigerating air-conditioning apparatus operation>

[0064] 接着,对本实施方式的冷冻空调装置1的通常运行时的各构成要素的动作进行说明。 [0064] Next, the operation of each component of the refrigerating and air conditioning apparatus according to the present embodiment, when a normal operation will be described.

[0065] 本实施方式的冷冻空调装置1作为通常运行进行制冷运行或者制热运行,根据各室内单元4A、4B的运行负荷进行室外单元2以及室内单元4A、4B的构成设备的控制。 [0065] The refrigerating air-conditioning apparatus 1 of the present embodiment performs the cooling operation or heating operation as a normal operation, a control device of the outdoor units 2 and the indoor units 4A, 4B according to the operation load of the indoor units 4A, 4B of. 以下, 按制冷运行、制热运行的顺序进行说明。 Hereinafter, the cooling operation, the heating operation will be sequentially described.

[0066](制冷运行) [0066] (cooling operation)

[0067] 图3是本发明的一个实施方式所涉及的冷冻空调装置1的制冷运行时的p_h线图。 [0067] FIG. 3 is a diagram p_h refrigeration refrigerating and air conditioning apparatus of an embodiment of the present invention to a runtime. 以下,利用图3以及图1对制冷运行进行说明。 Hereinafter, using FIGS. 3 and FIG. 1 cooling operation will be described.

[0068] 在制冷运行时,四通阀22成为图1的实线所示的状态,S卩,压缩机21的排出侧与室外热交换器23的气体侧连接、且压缩机21的吸入侧由气体侧关闭阀29以及气体制冷剂延长配管7 (气体主管7A、气体支管7a、7b)与室内热交换器42A、42B的气体侧连接的状态。 [0068] During the cooling operation, the four-way valve is indicated by the solid line in FIG. 1 in a state 22, the gas side S Jie, the discharge side of the compressor 21 is connected to the outdoor heat exchanger 23, 21 and the suction side of the compressor Close gas side stop valve 29 and the gas refrigerant pipe 7 extended (gas main pipe 7A, the gas branch pipes 7a, 7b) 42A, 42B in the state connected to the gas side of the indoor heat exchanger. 另外,液体侧关闭阀28、气体侧关闭阀29以及旁通流量调整阀72都为打开状态。 Further, the liquid side closing valve 28, the gas side closing valve 29 and a bypass flow rate adjusting valve 72 are opened.

[0069] 接着,对制冷运行中的主制冷剂回路10z的制冷剂的流动进行说明。 [0069] Next, the flow of the cooling operation of the circuit 10z main refrigerant of the refrigerant will be described.

[0070] 制冷运行中的制冷剂的流动成为图1的实线箭头。 [0070] The flow of the refrigerant in the cooling operation becomes a solid line arrow in FIG. 1. 由压缩机21压缩的高温高压气体制冷剂(图3点I)经过四通阀22到达室外热交换器23,通过风扇27的送风作用进行冷凝液化(图3点R0)。 Compressed by the compressor 21 of the high temperature high pressure gas refrigerant (Fig 3:00 I) through the four-way valve 22 to the outdoor heat exchanger 23, condensed and liquefied (FIG. 3:00 R0) by the action of the blower fan 27. 此时的冷凝温度由热交换温度传感器33k求得,或者通过对排出压力传感器34b的压力进行饱和温度换算而求得。 At this time, the condensing temperature by the heat exchanger temperature sensor 33k is obtained, or by the pressure of the discharge pressure sensor 34b in terms of the calculated saturation temperature.

[0071] 由室外热交换器23进行了冷凝液化的制冷剂由过冷却器26使过冷却度进一步变大(图3点HA)。 [0071] from the outdoor heat exchanger 23 is condensed and liquefied by a refrigerant subcooler that the degree of supercooling is further increased (Fig 3:00 HA) 26. 此时的过冷却器26出口的过冷却度通过从上述冷凝温度减去设置在过冷却器26的出口侧的液管温度传感器33d的温度而求得。 At this time, the outlet of the subcooler 26 degree of subcooling is obtained by subtracting the setting through the liquid pipe temperature sensor of an outlet side of the cooler 26 the temperature of 33d from the condensation temperature.

[0072] 之后,制冷剂经由液体侧关闭阀28,在液体制冷剂延长配管6即液体主管6A、液体支管6a、6b中通过管壁面摩擦而使压力下降(图3点NI),送至利用单元4A、4B,由膨胀阀41A、41B减压,成为低压的气液二相制冷剂(图3点HO)。 After [0072] The refrigerant turn off via the liquid-side valve 28, the liquid refrigerant extension pipe 6, i.e. the liquid main. 6A, the liquid branch pipe 6a, 6b in the lowered (FIG. 3:00 NI) friction of the pressure through the wall surface, to the use of the units 4A, 4B, the expansion valve 41A, 41B under reduced pressure, pressure gas-liquid two-phase refrigerant (Fig 3:00 HO). 气液二相制冷剂由蒸发器即室内热交换器42A、42B通过室内风扇43A、43B的送风作用进行气化(图3点HI)。 A gas-liquid two-phase refrigerant from the evaporator, i.e. the indoor heat exchanger 42A, 42B is gasified (FIG. 3 o'clock HI) by the blowing action of the indoor fan 43A, 43B of.

[0073] 此时的蒸发温度由液体侧温度传感器33e、33h测量,各室内热交换器42A、42B的出口的制冷剂的过热度SH通过从由气体侧温度传感器33f、33i检测的制冷剂温度值减去由液体侧温度传感器33e、33h检测的制冷剂温度而求得。 [0073] At this time, the evaporating temperature by the liquid side temperature sensors 33e, 33h measurement, the indoor heat exchangers 42A, the degree of superheat of the refrigerant outlet 42B from the group consisting of SH by the gas side temperature sensor 33F, the refrigerant temperature detected 33i subtracting the value calculated by the liquid side temperature sensors 33e, 33h refrigerant temperature detected. 各膨胀阀41A、41B受到开度调节, 以便室内热交换器42A、42B的出口(即,室内热交换器42A、42B的气体侧)的制冷剂的过热度SH成为过热度目标值SHm。 Expansion valves 41A, 41B by adjusting the degree of opening, so that the indoor heat exchanger outlet 42A, 42B (i.e., the indoor heat exchangers 42A, 42B of the gas-side) the degree of superheat SH of the refrigerant superheat degree SHm target value.

[0074] 经过了室内热交换器42A、42B的气体制冷剂(图3点HI)到达气体制冷剂延长配管7即气体支管7a、7b以及气体主管7A,通过经过这些配管时的配管的管壁面摩擦而使压力下降(图3点TO)。 [0074] As a result of the indoor heat exchangers 42A, 42B of the gas refrigerant (Fig 3:00 HI) to the gas refrigerant extension pipe 7 i.e., gas branch pipes 7a, 7b and gas main 7A, by passing through the wall surface of the pipe when the pipe the frictional pressure drop (FIG. 3:00 TO). 并且,制冷剂经过气体侧关闭阀29以及蓄能器24而向压缩机21返回。 Further, the refrigerant passes through the gas side closing valve 29 and the accumulator 24 is returned to the compressor 21.

[0075] 接着,对旁通回路71内的制冷剂的流动进行说明。 [0075] Next, the flow of the refrigerant in the bypass circuit 71 will be described. 旁通回路71的入口位于过冷却器26出口与液体侧关闭阀28之间,使由过冷却器26冷却了的高压液体制冷剂(图3点HA)的一部分分支,在由旁通流量调整阀72减压而成为低压二相制冷剂之后(图3点TI), 流入过冷却器26。 The bypass circuit 71 through an inlet located between the outlet 2826 and the liquid side closing valve cooler, high-pressure liquid refrigerant is cooled in the subcooler 26 (FIG. 3:00 HA) branches a part of, the bypass flow rate adjusted by after the valve 72 and becomes low-pressure two-phase refrigerant (Fig 3:00 TI), flows into the cooler 26. 在过冷却器26中,经过了旁通回路71的旁通流量调整阀72的制冷剂与主制冷剂回路l〇z的高压液体制冷剂进行热交换,对在主制冷剂回路10z中流通的高压液体制冷剂进行冷却。 In the subcooler 26, through the bypass flow rate adjusting valve 71 of the bypass refrigerant and high-pressure liquid refrigerant in the main refrigerant circuit 72 l〇z heat exchange of the refrigerant circulating in the primary circuit of 10z high-pressure liquid refrigerant is cooled. 由此,在旁通回路71中流动的制冷剂蒸发气化,向压缩机21返回(图3 点TO)。 Thus, the flow in the bypass refrigerant circuit 71 is evaporated and gasified, returns (FIG. 3:00 TO) to the compressor 21.

[0076] 此时,旁通流量调整阀72受到开度调节,以便过冷却器26的旁通回路71侧的出口的制冷剂的过热度SHb成为过热度目标值SHbm。 [0076] At this time, the bypass flow rate adjusting valve 72 by adjusting the degree of opening, so that the degree of superheat of the refrigerant through the bypass circuit 71 of the outlet side of the cooler 26 becomes the target value SHbm SHb of superheat. 在本实施方式中,过冷却器26的旁通回路71侧的出口的制冷剂的过热度SHb,通过从由旁通温度传感器33z检测的制冷剂温度减去由吸入压力传感器34a检测的压缩机21的吸入压力Ps的饱和温度换算值来进行检测。 In the present embodiment, the degree of superheat of the refrigerant outlet 26 of the bypass 71 side of the subcooler SHb is, by subtracting the suction pressure of the compressor 34a is detected by the sensor from the refrigerant temperature detected by the bypass temperature sensor 33z saturation temperature of suction pressure Ps converted value 21 is detected. 另外,在本实施方式中虽未采用,但也可以在旁通流量调整阀72与过冷却器26之间设置温度传感器,通过从由旁通温度传感器33z测量的制冷剂温度值减去由该温度传感器测量的制冷剂温度值,检测过冷却器26的旁通回路侧的出口的制冷剂的过热度SHb。 Although not employed in the present embodiment, but may be adjusted through the bypass flow valve 72 and a temperature sensor disposed between the cooler 26, by subtracting the refrigerant temperature value measured by the bypass temperature sensor 33z by that refrigerant temperature measured by the temperature sensor, the degree of superheat detected through the bypass circuit side of the outlet of the cooler 26 of the refrigerant SHb.

[0077] 另外,在本实施方式中,旁通回路71入口处于过冷却器26出口与液体侧关闭阀28 之间,但也可以设置在室外热交换器23与过冷却器26之间。 [0077] Further, in the present embodiment, at the inlet to bypass circuit 71 through the outlet 26 between the valve 28 closed and the liquid side of the cooler, but may be provided between the outdoor heat exchanger 23 and the subcooler 26.

[0078](制热运行) [0078] (heating operation)

[0079] 图4是本发明的一个实施方式所涉及的冷冻空调装置1的制热运行时的p_h线图。 [0079] FIG. 4 is a diagram p_h a refrigerating air-conditioning apparatus of the present embodiment of the invention relates to a heating runtime. 以下,利用图4以及图1对制热运行进行说明。 Hereinafter, using FIG. 4 and FIG. 1 the heating operation will be described.

[0080] 在制热运行时,四通阀22成为图1的虚线所示的状态,S卩,压缩机21的排出侧由气体侧关闭阀29以及气体制冷剂延长配管7 (气体主管7A、气体支管7a、7b)与室内热交换器42A、42B的气体侧连接、且压缩机21的吸入侧与室外热交换器23的气体侧连接的状态。 [0080] In the heating operation, the four-way valve is shown in broken lines in FIG. 1 state 22, S Jie, the discharge side of the compressor 21 is closed by the gas-side valve 29 and the gas refrigerant pipe 7 extended (gas main. 7A, gas branch pipe 7a, the gas side 7b) and the indoor heat exchanger 42A, 42B is connected to the compressor and the suction side 21 of the state of the outdoor heat exchanger 23 is connected to the gas side. 另外,液体侧关闭阀28以及气体侧关闭阀29成为打开状态,旁通流量调整阀72成为关闭状态。 Further, the liquid side closing valve 28 and the gas side closing valve 29 is opened, the bypass flow rate adjusting valve 72 is closed.

[0081] 接着,对制热运行的主制冷剂回路10z的制冷剂的流动进行说明。 [0081] Next, the flow of the primary refrigerant circuit 10z refrigerant to the heating operation will be described.

[0082]制热条件下的制冷剂的流动成为图1的点线箭头。 [0082] The flow of the refrigerant under heating conditions become dotted arrow in FIG. 1. 由压缩机21压缩的高温高压制冷剂(图4点I)经过制冷剂气体延长配管即气体主管7A、气体支管7a、7b,此时通过管壁面摩擦使压力下降(图4点R0),到达室内热交换器42A、42B。 Compressed by the compressor 21 of the high-temperature high-pressure refrigerant (FIG. 4:00 I) passes through the refrigerant gas extension pipe i.e. the gas main pipe 7A, the gas branch pipes 7a, 7b, this time through the wall surface of the frictional pressure drop (FIG. 4:00 R0), arriving indoor heat exchanger 42A, 42B. 在室内热交换器42A、42B 中,通过室内风扇43A、43B的送风作用进行冷凝液化(图4点HA),由膨胀阀41A、41B减压而成为低压的气液二相制冷剂(图4点NI)。 In the indoor heat exchangers 42A, 42B, the condensed and liquefied (4:00 FIG HA) by the blowing action of the indoor fan 43A, 43B and the expansion valve 41A, 41B and becomes low-pressure gas-liquid two-phase refrigerant (FIG. 4:00 NI).

[0083] 此时,膨胀阀41A、41B受到开度调节,以便室内热交换器42A、42B的出口的制冷剂的过冷却度SC以过冷却度目标值SCm恒定。 [0083] In this case, the expansion valves 41A, 41B by adjusting the degree of opening, so that the indoor heat exchanger 42A, the subcooling degree of the refrigerant outlet 42B of the target degree of supercooling SC at constant SCm. 在本实施方式中,室内热交换器42A、42B的出口的制冷剂的过冷却度SC,通过将由排出压力传感器34b检测的压缩机21的排出压力Pd 换算成与冷凝温度Tc对应的饱和温度值、从该制冷剂的饱和温度值减去由液体侧温度传感器33e、33h检测的制冷剂温度值,从而进行检测。 In the present embodiment, the indoor heat exchanger 42A, the subcooling degree of the refrigerant outlet 42B of the SC, by the discharge of the compressor by a pressure sensor 34b detects the discharge pressure Pd is converted to 21 and the condensation temperature Tc corresponding to a saturation temperature value subtracting from this saturated temperature of the refrigerant by 33e, 33h refrigerant temperature value detected by the liquid side temperature sensor, thereby performing detection.

[0084] 另外,在本实施方式中虽未采用,但也可以设置对在各室内热交换器42A、42B内流动的制冷剂的温度进行检测的温度传感器,通过从由液体侧温度传感器33e、33h检测的制冷剂温度值减去由上述温度传感器检测的与冷凝温度Tc对应的制冷剂温度值,由此检测室内热交换器42A、42B的出口的制冷剂的过冷却度SC。 [0084] Although not employed in the present embodiment, but may be set, the temperature of the refrigerant flowing in the indoor heat exchangers 42A 42B in the sensor for detecting a temperature, from 33e by the liquid side temperature sensor, 33h refrigerant temperature value Tc detected by subtracting the refrigerant temperature value corresponding to the condensing temperature detected by the temperature sensor, thereby detecting 42A, the indoor heat exchanger subcooling degree SC of the refrigerant outlet 42B of. 之后,低压的气液二相制冷剂在液体制冷剂延长配管6即液体主管6A、液体支管6a、6b中通过管壁面摩擦而使压力下降之后(图4点H0),经由液体侧关闭阀28到达室外热交换器23。 Thereafter, the low-pressure gas-liquid two-phase refrigerant extension pipe 6, i.e. the liquid main. 6A, the liquid branch pipe 6a, 6b through the wall surface of the friction the pressure drops after (FIG. 4:00 H0 of), off via the liquid-side valve 28 in the liquid refrigerant reaching the outdoor heat exchanger 23. 在室外热交换器23中,通过室外风扇27的送风作用而蒸发气化(图4点HI),经由四通阀22、蓄能器24向压缩机21 返回。 In the outdoor heat exchanger 23, the outdoor fan 27 by the blower action of the evaporating gas (the HI FIG 4:00), via the four-way valve 22, the accumulator 24 returns to the compressor 21.

[0085](制冷剂泄漏检测方法) [0085] (refrigerant leak detection method)

[0086] 接着,对制冷剂泄漏检测方法的流程进行说明。 [0086] Next, the refrigerant leak detection process will be described. 另外,在冷冻空调装置1的运行中,始终实施制冷剂泄漏检测。 Further, in the refrigerating air-conditioning apparatus 1 operation, the refrigerant leak detection always embodiment. 另外,冷冻空调装置1经由通信线向管理中心(未图示)等发送表示制冷剂泄漏的检测结果的制冷剂泄漏有无数据,形成为能够进行远距离监视的构成。 Further, refrigerating and air conditioning apparatus 1 transmits a detection result of the refrigerant leakage to the management center via a communication line (not shown) or absence of refrigerant leakage data, it is formed as a configuration capable of remote monitoring.

[0087] 在本实施方式中,以计算充填在已设置的冷冻空调装置1中的制冷剂总量、检测制冷剂是否泄漏的方法为例进行说明。 [0087] In the present embodiment, an example will be described in order to calculate the total amount of filled refrigerant, the refrigerant leakage detecting whether the method of refrigerating air-conditioning apparatus 1 has been set.

[0088] 以下,利用图5对制冷剂泄漏检测方法进行说明。 [0088] Here, FIG. 5 using the refrigerant leak detection method will be described. 在此,图5是表示本发明的一个实施方式的冷冻空调装置1中的制冷剂泄漏检测处理的流程的流程图。 Here, FIG. 5 is a flowchart of the refrigerant leak detection process in a refrigerating and air conditioning apparatus according to an embodiment of the present invention. 对于制冷剂泄漏检测,并不进行用于制冷剂泄漏检测的特定运行,而是在通常的制冷运行或者制热运行中进行的,利用这些运行中的运行数据来进行制冷剂泄漏检测。 For the refrigerant leak detection is not performed for a particular refrigerant leak detection operation, but is typically carried out in a cooling operation or a heating operation using the operation data of these operation to detect refrigerant leak. 即,控制部3 -边进行通常运行一边进行图5的流程图的处理。 That is, the control unit 3 - for normal operation while edge processing of the flowchart of FIG. 在此,所谓运行数据,是指表示运行状态量的数据,具体来讲是由各压力传感器34a、34b、温度传感器33a〜331、33z获得的各测量值。 Here, the operation data refer to the amount of data showing the operating state, is specifically measured values ​​by the pressure sensors 34a, 34b, the temperature sensor 33a~331,33z obtained.

[0089] 首先,对于步骤S1的机种信息获取,控制部3从存储部3c获取制冷剂回路10之中的制冷剂量计算所需的各构成要素部件的内容积。 [0089] First, a model information acquiring step S1, the control unit 3 3c acquires from the storage unit the refrigerant circuit volume of each constituent member 10 in the refrigerant quantity required for the calculation. 在此,获取液体制冷剂延长配管6以及气体制冷剂延长配管7以外的部分的各构成要素部件的内容积。 Here, the liquid refrigerant extension acquiring volume each constituent member other than the portion 7 pipe 6 and the gas refrigerant extension pipe. 即,获取室内单元4A、4B 内的各配管以及各设备(压缩机21、室外热交换器23以及过冷却器26)各自的内容积、和室外单元2内的各配管以及各设备(室内热交换器42A、42B)的内容积。 That is, the pipes in the indoor unit 2 acquires. 4A, 4B in the respective pipes and the devices (compressor 21, outdoor heat exchanger 23 and the subcooler 26) a respective volume, and the devices and the outdoor unit (indoor heat switch 42A, 42B) of the volume. 计算制冷剂回路10内的制冷剂延长配管以外的部分的制冷剂量所需的内容积数据,预先存储在控制部3的存储部3c中。 Calculation of the refrigerant in the refrigerant circuit 10 to extend the volume of data required refrigerant in the portion other than the pipe, stored in the storage unit 3c of the control unit 3. 这些内容积数据的向控制部3的存储部3c的存储,既可以由设置人员经由输入部3g进行输入,也可以构成为在设置室外单元2以及室内单元4A、4B并进行通信设定时由控制部3与外部的管理中心等进行通信而自动地进行获取。 The volume of data stored in the storage unit 3c of the control unit 3, may be input via the input section 3g is provided by a person may be configured when setting the outdoor unit 2 and the indoor units 4A, 4B and a communication setting the control unit 3 communicates with an external management center for automatically acquired.

[0090] 接着,在步骤S2中,控制部3收集当前的运行数据(各温度传感器33a〜331、33z 以及压力传感器34a、34b所获得的数据)。 [0090] Next, in step S2, the control unit 3 collects current operational data (33a~331,33z temperature sensors and pressure sensors 34a, 34b data obtained). 另外,对于本实施方式的制冷剂泄漏检测,由于仅以使冷冻空调装置1运行所需的通常的数据来判断制冷剂有无泄漏,所以,不需要为了进行制冷剂泄漏检测而追加新的传感器等的工夫。 Furthermore, refrigerant leakage detection in the present embodiment, because only data required to make the normal operation of the refrigerating air-conditioning apparatus 1 determines the refrigerant leaks, there is no need for the refrigerant leak detection sensors and adding a new and other work.

[0091] 接着,在步骤S3中,确认步骤S2所收集的运行数据是否为稳定数据,若为稳定数据则转移到步骤S4。 [0091] Next, in step S3, the operational data collected in step S2 to confirm whether the data is stable, if the data is stable proceeds to step S4. 例如,在起动时等压缩机21的转速有变动或膨胀阀41A、41B的开度有变动的情况下,制冷剂循环的动作不稳定,因而,可根据步骤S2所收集的运行数据判断出当前的运行状态不稳定,在该情况下,不实施制冷剂泄漏检测。 For example, upon starting of the rotation speed of the compressor 21, a change in expansion valve 41A, 41B has a lower opening degree changes, the refrigerant circulation operation is unstable, and therefore, can be determined according to the current operational data collected in step S2 the unstable operation, in this case, the refrigerant leak detection is not performed.

[0092] 在步骤S4中,利用步骤S3所获得的稳定数据(运行数据),计算制冷剂回路10之中的液体制冷剂延长配管6以及气体制冷剂延长配管7以外的部分的制冷剂的密度。 [0092] In step S4, the stable data (operation data) using the step S3 obtained by calculating the refrigerant circuit liquid refrigerant from among the 10 extended density of the refrigerant in the portion other than the 7 pipe 6 and the gas refrigerant extension pipe . 制冷剂的密度由于是计算制冷剂量时所需的数据,所以,通过步骤S4进行求算。 Since the density of the refrigerant is required for calculating the refrigerant quantity data, so that, by operator request in step S4. 制冷剂回路10 之中的、在液体制冷剂延长配管6以及气体制冷剂延长配管7以外的部分即各构成要素部件经过的各制冷剂的密度的计算,能够通过以往公知的方法进行实施。 The refrigerant circuit in 10, the liquid refrigerant extension pipe 6 and the embodiment of the gas refrigerant extension pipe portion other than 7 i.e. each configured to calculate the density of each of the refrigerant element member passes, can be performed by a conventionally known method. 即,基本上能够根据压力和温度来计算制冷剂为液体或者气体中任意一种的单相部分的密度。 That is, the refrigerant can be calculated substantially according to the pressure and temperature to any of a single-density phase portion of a liquid or a gas. 例如,从压缩机21到室外热交换器23为止,制冷剂为气体状态,该部分的气体制冷剂密度能够通过由排出压力传感器34b检测的排出压力和由排出温度传感器33b检测的排出温度进行计算。 For example, from the compressor 21 to the outdoor heat exchanger 23 until the refrigerant is in a gaseous state, the gas density of the refrigerant through the portion of the discharge pressure detected by the discharge pressure sensor 34b are calculated by the discharge and the discharge temperature detected by the temperature sensor 33b .

[0093] 另外,在热交换器等的二相部中状态有变化的二相部密度,根据设备出入口状态量利用近似式来计算二相密度平均值。 Two-phase density portion [0093] Further, in the two-phase portion of the heat exchanger or the like in a state of change, according to the device state quantity entrance approximate expression to calculate the average value of the two-phase density. 这些演算所需的近似式等被预先存储在存储部3c 中,控制部3利用步骤S3所获得的运行数据和预先存储在存储部3c中的近似式等的数据, 计算制冷剂回路10之中的、液体制冷剂延长配管6以及气体制冷剂延长配管7以外的部分的各构成要素部件各自的制冷剂密度。 Required for these calculations are approximate expression and the like stored in the storage unit 3c, an approximate expression like the data control unit 3 using the operation data obtained in step S3 and stored in the storage unit 3c is, in the refrigerant circuit 10 is calculated , the liquid refrigerant extension pipe 6 and the gas refrigerant extension-refrigerant density of each of the constituent elements other than the portion of the member 7.

[0094] 接着,在步骤S5中确认初期学习实施的有无。 [0094] Next, in step S5, to confirm whether the initial learning of the embodiment. 所谓初期学习,是指计算液体制冷剂延长配管6的内容积以及气体制冷剂延长配管7的内容积、或计算用于检测制冷剂泄漏的有无所需的基准制冷剂量的处理。 The so-called initial learning means calculates a liquid refrigerant volume extension pipe 6 and the gas refrigerant pipe 7 extended volume or calculated for detecting refrigerant leak or absence of a reference refrigerant quantity required for the process. 室内单元或室外单元的各构成要素的内容积由设备各个种类确定且是已知的,相对于此,制冷剂延长配管如上述那样根据现场设置条件而使得配管长度不同,因而,无法将制冷剂延长配管的内容积作为已知数据预先设定在存储部3c 中。 Content of each component of the indoor unit or the outdoor unit of the product is determined by the respective device type and are known, whereas the refrigerant extension pipe, as according to the site setting conditions such that the pipe length above if different, therefore, not a refrigerant extension pipe a known volume of predetermined data in the storage unit 3c. 另外,本例将已设置的冷冻空调装置1作为对象,从该点来看,制冷剂延长配管的内容积也是未知的。 Further, the present embodiment of the refrigerating air-conditioning apparatus 1 has been set as the target, from this point of view, to extend the volume of the refrigerant pipe is not known. 从而,对于初期学习,在设置后实际运行冷冻空调装置,利用运行中的运行数据来计算制冷剂延长配管的内容积。 Thus, for initial learning, in actual operation, the refrigerating and air conditioning apparatus is provided to calculate the volume of the refrigerant pipe extended by operating the operation data. 在初期学习中一次计算出的制冷剂延长配管(液体制冷剂延长配管6以及气体制冷剂延长配管7)的内容积在此后的制冷剂泄漏检测时被反复使用。 In the initial learning once calculated refrigerant extension pipe (refrigerant liquid extension pipe 6 and the gas refrigerant pipe 7 extended) the product is repeatedly used during refrigerant leak detection thereafter. 对于初期学习的详细情况将在后叙述。 For the initial learning the details will be described later. 在步骤S5的判断中,若不进行初期学习, 则进入到步骤S6,若进行初期学习,则进入到步骤S8。 In the determination step S5, if not performed initial learning, the process proceeds to step S6, otherwise, perform initial learning, the process proceeds to step S8.

[0095] 在步骤S6中,确认当前的运行状态是否满足初期学习开始条件。 [0095] In step S6, it is confirmed whether or not the current state of early learning start conditions are satisfied. 初期学习开始条件,可以说是用于判断当前的运行状态是否处于能够准确计算制冷剂总量的状态的条件, 例如设定以下那样的条件。 Initial learning start conditions can be said that for determining whether the current operating state in a condition capable of accurately calculating the total amount of the refrigerant state such as the following set of conditions. 即,有关蓄能器24内部的制冷剂量,看作蓄能器24内的制冷剂全部都为气体,利用饱和气体密度进行计算。 That is, the refrigerant amount inside the accumulator about 24, the refrigerant in the accumulator 24 are all regarded as a gas, gas density is calculated using saturated. 为此,当在蓄能器24内滞留有剩余液体制冷剂时,若不顾液体制冷剂滞留与否地作为气体制冷剂计算制冷剂量,会无法计算出准确的制冷剂量。 For this reason, when retained within the accumulator 24 has a remaining liquid refrigerant, if the refrigerant retained regardless of whether or not the liquid refrigerant quantity calculated as a refrigerant gas, can not calculate the exact amount of refrigerant. 从而,作为蓄能器24的制冷剂量计算出的值成为相比实际值小了与剩余液体制冷剂量相当的量的值,该误计算产生影响而无法准确地计算后述的步骤S35的基准制冷剂量MrtTD。 Whereby, as the refrigerant quantity calculated value of the accumulator 24 becomes smaller than the actual value of the liquid refrigerant corresponding to the remaining amount of dose values, the error calculation step and the impact can not be accurately calculated in S35 described later, the reference cooling dose MrtTD. 从而,在这样在蓄能器24内滞留有剩余液体制冷剂的状态时,不实施初期学习。 Therefore, when such accumulated in the accumulator 24 with a state of the remaining liquid refrigerant, initial learning is not performed. 即,作为初期学习开始条件,指定的是在蓄能器24内没有制冷剂滞留。 That is, as an initial learning start condition, is not specified the refrigerant remaining in the accumulator 24.

[0096] 作为在蓄能器24内是否滞留制冷剂的判断,基于当前的运行数据,通过各室内热交换器42A、42B的出口的制冷剂的过热度SH(压缩机21的入口的过热度)是否为0以上来进行判断。 [0096] As retention is determined whether the refrigerant in the accumulator 24, based on the current operating data, by the indoor heat exchangers 42A, the degree of superheat of the refrigerant outlet 42B of SH (degree of superheat of the inlet of the compressor 21 ) determines whether to 0 or more. 即,在过热度SH为0以上的情况下,判断为在蓄能器24内没有制冷剂滞留, 在过热度SH不足0的情况下,判断为在蓄能器24内有制冷剂滞留。 That is, when the degree of superheat SH of 0 or more, it is determined that there is no refrigerant is accumulated in the accumulator 24, in the case where the degree of superheat SH is less than 0, it is determined that there is refrigerant remaining in the accumulator 24.

[0097]如上所述,判断是否满足初期学习开始条件,在运行状态满足初期学习条件的情况下,转移到初期学习处理(S7),在不满足的情况下,返回到步骤S2继续进行通常运行。 [0097] As described above, it is determined whether the initial learning start condition is satisfied, the operation state of the initial learning condition satisfied, the process proceeds to the initial learning process (S7), in the case of not satisfied, the process returns to step S2 to continue the normal operation . 对于初期学习的详细情况在后叙述。 For details of the initial study will be described later.

[0098] 在步骤S8中,计算制冷剂回路10的各构成要素的制冷剂量,通过对这些制冷剂量进行合计,计算充填于冷冻空调装置1的制冷剂总量凡。 [0098] In step S8, the calculated refrigerant quantity in each refrigerant circuit components 10, the sum of those by the refrigerant quantity calculating the total amount of the refrigerant filled in the refrigerating air-conditioning apparatus 1 where. 在由图2的测定部3a获取各种传感器信息之后,利用这些测定数据、以及存储在存储部3c中的各种数据(各构成要素部件的内容积、容积比a、液体制冷剂延长配管6的内容积VPp气体制冷剂延长配管6的内容积\^等),由演算部3b计算制冷剂总量Mp另外,存储部3c内的液体制冷剂延长配管6的内容积VPjP气体制冷剂延长配管7的内容积V^:通过初期学习计算并被存储。 3a after information acquired by the various sensors measuring portion in FIG. 2, by using these measurement data, and various data stored in the memory section 3c (the volume of each constituent member, the volume ratio a, the liquid refrigerant extension pipe 6 the volume VPp gas refrigerant extension pipe 6 internal volume \ ^, etc.), the total amount of the refrigerant Mp calculated by the arithmetic unit 3b Further, the liquid refrigerant in the storage unit 3c extend volume VPjP gas refrigerant pipe 6 an extension pipe 7 volume content V ^: calculated and stored by the initial learning.

[0099]制冷剂量通过将制冷剂密度与内容积相乘而求得。 [0099] determined by the refrigerant amount and the refrigerant density multiplied by volume. 从而,关于制冷剂回路10的制冷剂延长配管以外的部分的制冷剂量凡。 Thus, the refrigerant on the refrigerant circuit 10 of the refrigerant in the portion other than the extension of the pipe where. thOTP,能够基于经过各个部分的制冷剂的密度以及存储在存储部3c中的内容积数据来进行求算。 thOTP, can be performed based on the elapsed refrigerant density, and the respective portions in the data storage volume in the storage unit 3c operator demand. 另外,延长配管的制冷剂量MP(液体制冷剂延长配管6的制冷剂量和气体制冷剂延长配管7的制冷剂量的相加量),利用由初期学习求出的液体制冷剂延长配管6的内容积VPp气体制冷剂延长配管7的内容积Vrc、液体制冷剂延长配管6的制冷剂密度PPjP气体制冷剂延长配管7的制冷剂密度P^进行计算。 In addition, prolonged refrigerant amount MP pipe (liquid refrigerant extension pipe refrigerant quantity and the gas refrigerant 6 is extended by adding an amount of refrigerant pipe 7), to extend the use of the liquid refrigerant from the initial learning obtained pipe volume 6 VPp gas refrigerant extension pipe 7 volume content Vrc, the liquid refrigerant density of the refrigerant extension pipe 6 PPjP gas refrigerant density of the refrigerant extension pipe 7 P ^ is calculated. 关于制冷剂总量凡的计算方法的详细情况在后叙述。 Details of method of calculating the total amount of all of the refrigerant will be described later.

[0100] (步骤S9 :制冷剂量的泄漏判定) [0100] (Step S9: the amount of refrigerant leakage determination)

[0101] 在步骤S9中,进行后述的初期学习所获得的基准制冷剂量(初期充填量)M,STD与步骤S8所计算出的制冷剂总量M,的比较,若M,STD=M,则判断为无制冷剂泄漏,若M,STD> MJW判断为有制冷剂泄漏。 [0101] In step S9, the comparative reference refrigerant amount (initial charge amount) S8 calculated total refrigerant amount M M, STD step, the initial learning will be described later obtained, if M, STD = M , it is determined that no refrigerant leakage, if M, STD> MJW is determined that there is refrigerant leakage. 在判断出无制冷剂泄漏的情况下,通过步骤S10发送制冷剂量正常的信息。 In the refrigerant leakage is judged no case, at step S10 transmits a normal refrigerant quantity information. 在判断出有制冷剂泄漏的情况下,通过步骤S11发送有制冷剂泄漏的信息。 In the case where it is determined that there is refrigerant leakage, information transmitted at step S11 of refrigerant leakage. 步骤S10以及步骤S11的信息发送,除了例如在显示部3f•进行显示等来进行之外,还将表示制冷剂量泄漏有无的检测结果的制冷剂泄漏有无数据通过通信线等向远方的管理中心发送(信息发送)。 Information transmitting step S10 and step S11, for example, in addition to display on the display unit 3f • performs addition, the amount of refrigerant will leak indicates the presence or absence of the detection result of the presence or absence of refrigerant leakage to a remote data management via a communication line, etc. Center to send (send). 另外,在此,在制冷剂总量凡不等于初期充填量MrtTD的情况下,判断为有制冷剂泄漏,但在制冷剂量计算时存在因传感器误差等造成制冷剂总量凡的值变化的情况,因而,也可以在考虑该点的基础上确定制冷剂泄漏有无的判定阈值。 Further, in this case, where the total amount of the refrigerant is not equal to the initial charge amount MrtTD, it is determined that there is refrigerant leakage, but there is a case causing changes in the total value of all the refrigerant because of sensor errors during the refrigerant quantity calculating determining, therefore, it may be considered at this point based on the presence or absence of determination threshold refrigerant leak.

[0102] 控制部3在进行了正常、异常的信息发送之后,向返回(RETURN)转移,再次反复从步骤S1起的处理。 [0102] performing the normal control section 3, after the abnormality information transmitted, to return (the RETURN) transfer, the processing is repeated from step S1 once again played. 通过反复从上述步骤S1到步骤S11的处理,在通常运行中始终进行制冷剂泄漏检测。 By repeating the processing from step S1 to step S11, and normal operation is always performed in the refrigerant leakage detection.

[0103] (步骤S7:初期学习) [0103] (Step S7: early learning)

[0104] 图6是本发明的一个实施方式所涉及的冷冻空调装置1的初期学习的流程图。 [0104] FIG. 6 is a flowchart of a refrigerating air-conditioning apparatus of the present embodiment of the invention an initial learning. 以下,利用图6对初期学习进行说明。 The following, using FIG. 6 early learning will be described. 对于初期学习,进行制冷剂延长配管的内容积计算和基准制冷剂量D的计算这两种作业。 For the initial learning, the extension product of the refrigerant and calculates the reference refrigerant quantity calculating D content job two pipe. 基准制冷剂量M_,是成为在进行制冷剂泄漏检测时判断制冷剂的泄漏的有无的基准的基准量。 Reference refrigerant amount M_, the reference is the amount of refrigerant leakage is determined when performing the refrigerant leak detection of the presence or absence of the reference. 由于制冷剂随着时间经过而变得容易泄漏,所以,基准制冷剂量MrtTD的计算有尽量在冷冻空调装置1设置后立即进行的必要。 Since the refrigerant as time passes easily leak, therefore, the calculation of the reference refrigerant amount MrtTD necessary as far as possible immediately after the refrigerating air-conditioning apparatus 1 is provided. 另外,在此进行制冷运行。 Also during this cooling operation.

[0105] 首先,在步骤S21中,判断当前的运行状态是否与预先设定的运行数据获取条件一致。 [0105] First, in step S21, it is determined whether the current operating state of the operating data acquisition is consistent with the conditions set in advance. 在当前的运行状态与运行数据获取条件不一致的期间,返回到图5的步骤S2,在成为与运行数据获取条件一致的运行状态之前都反复进行步骤S2〜S7的处理。 During acquisition of the condition is not in the current operating state with the operation data, the process returns to step S2 of FIG. 5, step acquisition process are repeatedly performed until uniform conditions S2~S7 the operating state becomes the operational data. 在本实施方式中,特征在于,不利用特别的运行模式就能够根据在通常运行中所获取的运行数据来进行制冷剂延长配管(液体制冷剂延长配管6以及气体制冷剂延长配管7)的内容积的计算,作为在制冷剂延长配管的内容积的计算时使用的运行数据,使用满足规定的运行数据获取条件的运行状态时的运行数据。 In the present embodiment, wherein, without using a special operation mode can be performed refrigerant extension pipe according to the operation data during normal operation acquired (the liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe 7) in calculating the volume of data used as the operating refrigerant extension pipe volume calculation using acquired data satisfies a predetermined run time operation data of the operating state condition. 另外,初期充填量为已知的情况下的运行数据获取条件既可以与步骤S21的初期学习开始条件相同,也可以指定另外的条件。 Further, the initial charge amount of data in the case of the known operating conditions of access may be the same as the initial learning start condition at step S21, a further condition can also be specified. 无论是哪种,运行数据获取条件都指定使得制冷剂循环的动作稳定、可高精度地进行制冷剂延长配管的内容积的计算的运行状态。 Either way, the data acquisition operating conditions are specified so that stable operation of the refrigerant cycle, the refrigerant can be accurately calculated volume of the extension pipe operating state. 具体来讲,例如列举以下的(A)〜(C)的条件。 Specifically, for example, the conditions include the following (A) ~ (C) of.

[0106] (A)作为冷冻空调装置的要素设备的压缩机的运行频率、膨胀阀开度、安装于室内外热交换器的风扇转速等各个运行状态的变动,全部都分别处于某个恒定的范围内。 [0106] (A) as the operating frequency of the compressor elements of the refrigeration air-conditioning apparatus, fluctuation of the respective operating state of the opening degree of the expansion valve, attached to the indoor heat exchanger fan speed and the like, are all at a constant range. 这就指定了促动器的变动小。 This specifies a small change in the actuator.

[0107] (B)安装于冷冻空调装置1的排出压力传感器(高压压力传感器)34b的值为某个恒定值以上,且吸入压力传感器(低压压力传感器)34a的值为某个恒定值以下。 [0107] (B) above is attached to the discharge pressure sensor refrigerating air-conditioning apparatus 1 (the high-pressure sensor) 34b of a constant value, and the suction pressure sensor (low pressure sensor) 34a is a certain constant value.

[0108] (C)冷冻空调装置1的室内热交换器42A、42B中的制冷剂温度(蒸发温度)与室内温度的差异的变动幅度为恒定值以内,而且,室外热交换器23中的制冷剂温度(冷凝温度)与由室外温度传感器33c测量的室外温度的差异的变动幅度为恒定值以内。 The indoor heat exchanger [0108] (C) the refrigerating air-conditioning apparatus 1 42A, the variation range of the difference of the refrigerant temperature (evaporation temperature) of 42B and the indoor temperature is constant within, and, in the outdoor heat exchanger 23 cooling coolant temperature (condensation temperature) and the amplitude of fluctuation of the difference between outdoor temperature measured by the outdoor temperature sensor 33c is within a constant value.

[0109] 并且,在步骤S22中,在当前的运行状态成为满足运行数据获取条件的运行状态时,将此时的运行数据作为初期学习用的运行数据自动地获取保持(S22)。 When [0109] Then, in step S22, the current operating state to meet the operating condition data acquired operation state, the operation data at that time as the initial learning operation data acquired automatically held (S22).

[0110] 接着,在步骤S23、S24中,利用通常运行数据来计算延长配管密度PP和制冷剂延长配管以外的制冷剂量MuthOTP。 [0110] Next, at step S23, S24, the normal operation using the data to calculate the extension pipe PP and a refrigerant density of refrigerant MuthOTP extend beyond the pipe. 根据一个运行数据,分别计算延长配管密度PP和制冷剂延长配管以外的制冷剂量MuthOTP,各计算结果被存储在存储部3c内。 According to one operating data were calculated density PP extension pipe and a refrigerant other than the extension pipe refrigerant quantity MuthOTP, each calculation result is stored within the storage unit 3c. 延长配管密度PP是考虑了液体侧和气体侧双方的配管密度而计算出的值,通过接下来的(1)式进行计算。 Extension pipe in consideration of the density of the PP pipe of the density of both calculated values ​​and a gas-side liquid-side, is calculated by the following equation (1).

[0111] pp=pPL+ap";••• (1) [0111] pp = pPL + ap "; ••• (1)

[0112] 在此,P%是液体制冷剂延长配管平均制冷剂密度(以下,称为液体制冷剂延长配管密度)[kg/m3],根据冷凝压力(通过对由热交换温度传感器33k获得的冷凝温度Tc进行换算而得)和由液管温度传感器33d获得的过冷却器26的出口温度求得。 [0112] Here, P% liquid refrigerant extension pipe average refrigerant density (hereinafter referred to as the liquid refrigerant extension pipe Density) [kg / m3], according to the condensing pressure (by the heat exchanger temperature sensor 33k obtained condensation temperature Tc obtained for conversion) and the outlet temperature of the liquid pipe temperature sensor 33d obtained subcooler 26 is obtained.

[0113] 另外,Prc,是气体制冷剂延长配管平均制冷剂密度(以下,称为气体制冷剂延长配管密度)[kg/m3],由压缩机21的吸入侧的制冷剂密度和室内热交换器42A、42B的出口制冷剂密度的平均值求得。 [0113] Further, Prc, gas refrigerant extension average refrigerant density of the pipe (hereinafter referred to as the gas refrigerant extension pipe Density) [kg / m3], exchanged with refrigerant density, and the indoor heat the intake 21 of the side of the compressor device 42A, the average density of the refrigerant outlet 42B is obtained. 压缩机21的吸入侧的制冷剂密度根据吸入压力Ps和吸入温度Ts求得。 Refrigerant density suction side of the compressor 21 is determined in accordance with the suction pressure Ps Ts and the suction temperature. 另外,室内热交换器42A、42B的出口制冷剂密度,根据蒸发温度Te的换算值即蒸发压力Pe和室内热交换器42A、42B的出口温度求得。 Further, the indoor heat exchangers 42A, 42B of the outlet refrigerant density, according to the converted value of the evaporation temperature Te, i.e., evaporation pressure Pe and the indoor heat exchangers 42A, 42B of the outlet temperature is obtained.

[0114] 另外,a,是液体制冷剂延长配管6与气体制冷剂延长配管7的容积比,被预先存储在控制部3的存储部3c中。 [0114] Further, a, is the ratio of the volume of the liquid refrigerant extension pipe 6 and the gas refrigerant pipe 7 of the extension, is stored in advance in the storage unit 3c of the control unit 3.

[0115] 制冷剂延长配管以外的制冷剂量MuttoP,是将冷凝器制冷剂量M,。 [0115] extend the refrigerant amount of the refrigerant pipe than MuttoP, condenser refrigerant amount is M ,. 、蒸发器制冷剂量、蓄能器制冷剂量油溶解制冷剂量全部加在一起得到的值,各个制冷剂量的计算方法在后叙述。 , An evaporator of refrigerant, the accumulator refrigerant quantity oil was dissolved refrigerant quantity obtained by adding together all the values, each calculated refrigerant quantity described later.

[0116] 接着,确认在设置了冷冻空调装置1的初期被充填的制冷剂量是否为已知(已输入)(S25)。 [0116] Next, to confirm whether the initial set refrigerating and air conditioning apparatus 1 is filled refrigerant amount is known (input) (S25). 例如在新设置冷冻空调装置1的情况或在存储部3c留下初期充填量的记录的情况等、初期充填量为已知的情况下,向步骤S26转移。 For example in the case where the new settings and other refrigerating or air-conditioning apparatus 1 is left in the storage section 3c recorded in the initial charge amount of the initial filling amount in the case of the known, S26 proceeds to the step. 另外,例如在已设置的冷冻空调装置1中没有留下初期充填量的记录的情况等、初期充填量不明的情况下,向步骤S30转移。 Further, for example, in the case 1 and the like without leaving the initial charge amount of the recording apparatus of the refrigerating and air conditioning have been set, the initial charge amount are unclear, S30 proceeds to the step.

[0117] 在步骤S26〜S29中,对初期充填量为已知的情况下的流程进行说明。 [0117] In step S26~S29, the initial charge amount to be described in the case where the process is known.

[0118] (初期充填量为已知的情况) [0118] (initial charge amount for the case where known)

[0119] 由于液体制冷剂延长配管6的内容积不明,所以,在内容积V%为未知数的状态下确定制冷剂总量Mr的算式。 [0119] Since the liquid refrigerant extension pipe 6 of the product is unknown, so the internal volume V% of the total refrigerant amount determining Mr formula as the unknown state. 此时,气体制冷剂延长配管7的内容积乂^;根据以下的(2) 式利用液体制冷剂延长配管内容积进行计算。 At this time, the gas refrigerant extension pipe 7 ^ qe volume; with a liquid refrigerant from the following equation (2) extension pipe volume calculation.

[0120] VPG=aVPL- (2) [0120] VPG = aVPL- (2)

[0121] 在此,气体制冷剂延长配管7的气体制冷剂密度相对于液体制冷剂延长配管6的液体制冷剂密度小到数十分之一倍,相比液体制冷剂延长配管6的内容积V&气体制冷剂延长配管7的内容积Vrc给计算制冷剂总量Mr带来的影响要小。 The gas refrigerant density [0121] Here, the gas refrigerant extension pipe 7 with respect to the liquid refrigerant extension liquid refrigerant density pipe 6 as small as several tenths of doubled compared to the liquid refrigerant extension product pipe 6 V & refrigerant gas extension pipe 7 to calculate the effect of the product Vrc Mr brings the total amount of the refrigerant is smaller. 为此,并不是分别各自计算气体制冷剂延长配管7的内容积VPjP液体制冷剂延长配管6的内容积VPp而是仅考虑配管径的差异,根据液体制冷剂延长配管6的内容积VPjlj用上述(2)式简易地计算气体制冷剂延长配管7的内容积Vrc。 For this reason, not independently from each calculate the gas refrigerant extension volume VPjP liquid refrigerant pipe 7 extended volume VPp pipe 6 but only considers the differences with the diameter of the liquid refrigerant extension The pipe volume VPjlj 6 by the above (2) a simple formula to calculate volume of the gas refrigerant extension pipe 7 Vrc. 另外,容积比a被预先储存在控制部3的存储部3c中。 Further, a volume ratio is previously stored in the storage unit 3c of the control unit 3.

[0122] 在步骤S26以及步骤S27中,如上所述,在液体制冷剂延长配管6的内容积VP^J 未知数的状态下,使用步骤S22所获取的初期学习用的运行数据来确定制冷剂总量凡的算式,利用该算式所获得的制冷剂总量凡与已知的初期充填量MrtTD相等的状况,计算液体制冷剂延长配管6的内容积。 Under [0122] In step S26 and step S27, the described above, the liquid refrigerant extension pipe 6 volume VP ^ J unknown state, in step S22 the initial use of the acquired data for the learning run to determine the total refrigerant Where the amount of the formula using the total amount of the refrigerant where the equation obtained with the known initial charge amount MrtTD equal conditions, to extend the calculated volume of the liquid refrigerant pipe 6. 该制冷剂总量凡的计算与上述的步骤S8中的制冷剂总量的计算方法同样。 The same method of calculation of the total amount of refrigerant S8 where the total amount of the refrigerant calculated in the above step.

[0123] Mr= VPLX pPL+(a XVPL) X p PG+MrotherP [0123] Mr = VPLX pPL + (a XVPL) X p PG + MrotherP

[0124] = MrSTD [0124] = MrSTD

[0125] 根据以上内容,液体制冷剂延长配管6的内容积VP^T通过下式进行计算。 [0125] According to the above, the liquid refrigerant extension pipe 6, the content volume VP ^ T calculated by the following equation.

[0126]VPL -(MrSTD -Mr-otherP) / (pPL+aX pPG) [0126] VPL - (MrSTD -Mr-otherP) / (pPL + aX pPG)

[0127] 其中,P &液体制冷剂延长配管6的制冷剂密度,a :液体制冷剂延长配管6与气体制冷剂延长配管7的容积比,P&气体制冷剂延长配管7的制冷剂密度,Muth"P:制冷剂回路10的制冷剂延长配管以外的部分的制冷剂量。 [0127] wherein, P & liquid refrigerant extension pipe refrigerant density 6, a: the liquid refrigerant extension pipe 6 and the gas refrigerant extension pipe volume ratio 7, P & gas refrigerant extension density of the refrigerant pipe 7, Muth "P: a refrigerant circuit refrigerant extension 10 of the refrigerant in the portion other than the piping.

[0128] 另外,在该制冷剂总量凡的算式之中,内容积V%与容积比a以外是能够根据运行数据计算的已知的值。 [0128] Further, in the equation where the total amount of the refrigerant, the volume V% is a known value and the volume can be calculated according to a ratio other than the operation data.

[0129] 接着,在步骤S28中,将步骤S26所求得的液体制冷剂延长配管6的内容积代入到上述(2)式中,计算气体制冷剂延长配管7的内容积VPe。 [0129] Next, in step S28, step S26 the determined liquid refrigerant extension pipe 6 is substituted into the above product (2) equation to calculate the gas refrigerant extension pipe 7 volume VPe.

[0130] 并且,将通过以上的处理计算出的液体制冷剂延长配管内容积VPp气体制冷剂延长配管内容积Vrc、基准制冷剂量(在初期充填量为已知的情况下是初期充填量)MrtTD记录到存储器等的存储部3c,结束初期充填量为已知的情况下的初期学习(S29)。 [0130] Then, calculated by the above treatment liquid refrigerant extension pipe volume VPp gas refrigerant extension pipe volume Vrc, the reference refrigerant amount (in the initial charge amount of the case where it is known that the initial charge amount) MrtTD and the like recorded in the memory storage unit 3c, the initial filling is completed initial learning amount (S29) in the case where known.

[0131] 如以上说明的那样,在初期充填量为已知的情况下,能够通过一次运行来计算制冷剂延长配管的内容积。 [0131] As explained above, in the case where the initial charge amount is known, is able to calculate the refrigerant volume extension pipe run.

[0132](初期充填量不明的情况) [0132] (initial charge amount unknown circumstances)

[0133] 在初期充填量为已知的情况下,运行数据为一个,能够进行制冷剂延长配管内容积的计算,但在初期充填量不明的情况下,若不获取多个(2以上)的运行数据则无法计算制冷剂延长配管内容积。 [0133] In the case where the initial charge amount is known, the operating data of a possible extension refrigerant pipe volume calculation, but in the case where the initial charge amount is unknown, if acquiring a plurality (2 or more) operation data can not be calculated refrigerant extension pipe volume. 从而,在步骤S30中判断是否获取了多个运行数据,若未获取多个运行数据,则返回图5的步骤S2继续进行通常运行直到成为与运行数据获取条件一致的运行状态为止。 Thus, it is determined in step S30 whether to acquire a plurality of operating data, if not a plurality of operating data acquisition, it returns to step S2 of FIG. 5 continues until a normal operation until the data acquired with the same operating conditions of operation. 另一方面,在步骤S30中判断出获取了多个运行数据的情况下,进入近似式计算处理。 On the other hand, it is determined in step S30 that the acquired plurality of operating data, into the approximate expression calculation processing. 从而,在进入到近似式计算处理时,在存储部3c内,存储有多个基于多个运行数据分别计算出的制冷剂延长配管密度PP和制冷剂延长配管以外的制冷剂量MuthOTP,在近似式计算处理中,利用该计算结果数据组(多个制冷剂延长配管密度PP和多个制冷剂延长配管以外的制冷剂量MythJ,制定表示制冷剂延长配管密度与延长配管以外的制冷剂量之间的关系的近似式。 Whereby, upon entry into the approximate expression calculation processing in the storage unit. 3C, stores a plurality based on the plurality of operating data were calculated refrigerant extend refrigerant amount MuthOTP outside pipe density PP and the refrigerant extension pipe, in the approximate formula calculation process, using the calculation result data group (a plurality of refrigerant extension pipe density of PP and a plurality of refrigerant extension refrigerant amount outside pipe MythJ, develop a refrigerant to extend the relationship between the amount of refrigerant than the pipe density of the extension pipe the approximate expression.

[0134] 近似式是在计算制冷剂延长配管的内容积方面所需的近似式,以下对根据近似式计算制冷剂延长配管内容积的计算原理进行说明。 [0134] approximate expression is desired in terms of volume of the refrigerant extension pipe calculation approximate expression for the calculation principle of an extended pipe volume is calculated according to the approximate refrigerant will be described.

[0135] 图7是用于说明对应于延长配管密度PP、延长配管的制冷剂量MP和延长配管以夕卜的制冷剂量MuthOTP相对于制冷剂总量M的比例变化的图。 [0135] FIG. 7 is a density corresponding to the extension pipe PP, MP extension pipe refrigerant quantity and the total amount of the extension pipe to the refrigerant of the rate of change of M Bu Xi phase refrigerant quantity MuthOTP FIG. 在图7中,带阴影的部分表示延长配管的制冷剂量MP,不带阴影的部分表示延长配管以外的制冷剂量凡。 In Figure 7, the shaded portion indicates the amount of refrigerant extension pipe MP, partially shaded refrigerant quantity other than where the extension pipe. ttoP。 ttoP. 图7示出的是,在被充填到制冷剂回路10内的制冷剂总量M为&时,对于延长配管密度PP小的情况(P1)和大的情况(P2),延长配管的制冷剂量MP和延长配管以外的制冷剂量MyttoP相对于制冷剂总量凡的比例发生变化。 Figure 7 shows that, when filled into the refrigerant circuit total refrigerant amount M in the 10 & For extension pipe density of PP is small (P1) and is large (P2), to extend the amount of refrigerant pipe MP other than the refrigerant quantity changes and the extension pipe MyttoP occurred relative to the total amount of all the refrigerant.

[0136]在此,当制冷剂回路10内的制冷剂状态发生变化、延长配管密度PP从P1变化到P2时,延长配管的制冷剂量MP增大了AM,另一方,延长配管以外的制冷剂量MuttoP相反地减小了与制冷剂量MP增大的AM相应的量,其变化量是相同的。 When [0136] Here, when the refrigerant circuit refrigerant state within 10 changes extension pipe density of PP from P1 is changed to P2, extension of refrigerant pipe MP is increased AM, the other, extend refrigerant amount outside pipe Conversely MuttoP AM reduces the amount corresponding to the amount of refrigerant MP increases, the amount of change is the same. 延长配管以外的制冷剂量凡。 Extension refrigerant pipe where dosages outside. ttoP和延长配管密度PP由于能够分别如在步骤S23、S24中所说明的那样根据运行数据进行计算,所以,也能够计算AM。 ttoP extension pipe and since the density of PP as in steps S23, S24 as described above are calculated based on operating data, it can be calculated AM. 依据该点,以下,对利用在延长配管密度PP从某个密度P1变化到P2的情况下的制冷剂变化量分别在延长配管的制冷剂量MP和延长配管以外的制冷剂量Muth"P中相等的状况、计算制冷剂延长配管内容积VP的次序进行说明。 According to this point, the following, for the use of the change amount of the refrigerant in the case where the extension pipe density of PP is changed from a certain density of P1 to P2 in the refrigerant quantity MP extension pipe and extend outside the pipe, respectively refrigerant quantity Muth "P in equal condition, calculating the refrigerant pipe extension order volume VP will be described.

[0137] 图8(a)是与图7的延长配管的制冷剂量MP对应的线图,示出延长配管密度PP与延长配管的制冷剂量MP之间的关系。 [0137] FIG. 8 (a) is a line graph and the amount of refrigerant extension pipe MP corresponding to FIG. 7, showing the relationship between the extension pipe and the PP the density of refrigerant extension pipe MP. 图8(b)是与图7的延长配管以外的制冷剂量Muth6rf 对应的线图,示出延长配管密度PP与延长配管以外的制冷剂量MuthOTP之间的关系。 FIG 8 (b) is a diagram other than the extension pipe of FIG. 7 corresponding to the amount of refrigerant Muth6rf showing the relationship between the extension pipe refrigerant quantity and the density of the PP than the extension pipe MuthOTP.

[0138] 在此,由于制冷剂量可通过内容积与密度之积进行计算,所以,MP=VPXpP这样的关系成立。 [0138] Here, since the amount of refrigerant may be calculated by the product of density and volume, therefore, MP = VPXpP establishment of such a relationship. 为此,图8(a)的倾斜度VP与当前欲求算的延长配管的内容积VP相当。 For this reason, the content of FIG. 8 (a) of inclination of the extension pipe VP currently calculated volume VP rather desire. 然而, 由于VP和MP的双方都是未知数,所以无法由图8(a)求得倾斜度VP。 However, since both VP and MP are unknown, it is impossible to obtain the inclination VP from Figure 8 (a). 然而,在延长配管密度PP从P1变化到P2时的制冷剂变化量,由于对于延长配管以外的部分也同样为AM,所以,图8(b)的倾斜度与图8(a)的倾斜度相等。 However, the extension pipe density of PP change amount of the refrigerant from P1 changes to the P2 due to extension than the pipe also is AM, therefore, the inclination of FIG. 8 (b) of inclination of FIG. 8 (a) is equal. 延长配管以外的制冷剂量Muth"P和延长配管密度PP由于可以分别如在步骤S23、S24说明的那样根据运行数据进行计算,所以,也可计算倾斜度一VP。从而,通过计算图8(b)的倾斜度,求算其绝对值,由此能够求得制冷剂配管内容积VP。 Extend refrigerant amount outside the pipe Muth "P and the extension pipe density of PP since as each In step S23, performed as S24 described according to the operation data calculation, therefore, also be calculated inclination a VP. Thus, by calculating in FIG. 8 (b ) inclination, the absolute value operator demand, whereby the refrigerant pipe can be obtained volume VP.

[0139] 在此,延长配管的制冷剂量MP,是将液体制冷剂延长配管6的制冷剂量与气体制冷剂延长配管7的制冷剂量加在一起的量,通过接下来的(3)式进行计算。 [0139] Here, the extension refrigerant amount MP pipe, a liquid refrigerant extension pipe refrigerant quantity and the gas refrigerant 6 to prolong the pipe refrigerant quantity 7, taken together, is calculated by the following formula (3) .

[0140] MP= (VPLXPPL) +(VPGXpPG)- (3) [0140] MP = (VPLXPPL) + (VPGXpPG) - (3)

[0141] 气体制冷剂延长配管7的内容积Vrc利用根据上述(2)式使用液体制冷剂延长配管内容积进行表示的状况,若将上述(2)式代入到(3)式中,则获得接下来的(4)式。 [0141] the gas refrigerant extension-pipe 7 volume Vrc utilization of liquid refrigerant according to (2) the extension pipe volume representing, when the above-described formula (2) into (3) In the formula, is obtained the next (4).

[0142] MP= (VPLXpPL) + (aVPLXpPG)…(4) [0142] MP = (VPLXpPL) + (aVPLXpPG) ... (4)

[0143] 若整理⑷式,则获得(5)式。 [0143] When finishing ⑷ formula is obtained (5).

[0144] MP=(pPL+apPG) •VPL…(5) [0144] MP = (pPL + apPG) • VPL ... (5)

[0145] Pap由于与延长配管密度pp相等,所以,图8(b)的倾斜度的绝对值与液体制冷剂延长配管内容积相当。 [0145] Pap since the extension pipe pp equal density, so that, in FIG. 8 (b) the absolute value of the inclination of the liquid refrigerant extension pipe volume considerably. 从而,通过求算图8(b)的倾斜度的绝对值,能够计算液体制冷剂延长配管内容积乂%,另外,通过(2)式也可以计算气体制冷剂延长配管内容积Vrc。 Such that the absolute value of inclination, calculated by taking FIG 8 (b), the liquid refrigerant can be calculated extension pipe volume qe%, Further, (2) may be calculated gas refrigerant extension pipe volume Vrc.

[0146] 根据以上内容,延长配管内容积的计算原理变得明确,对具体的计算次序进行说明。 [0146] According to the above, the extension pipe volume calculation principle becomes clear, a specific order of evaluation will be described.

[0147] 对于基于各运行数据计算出的计算结果数据组(延长配管密度PP、延长配管以外的制冷剂量MuthOTP),若在以延长配管密度PP为横轴而以延长配管以外的制冷剂量MuthOTP 为纵轴的XY坐标上标示计算结果数据组的各点,则成为如接下来的图9所示那样。 [0147] For calculated based on each operation data of the calculation result data set (extension pipe density PP, extend refrigerant amount outside pipe MuthOTP), if in order to extend the pipe density of PP as the horizontal axis and the amount of refrigerant MuthOTP than the extension pipe is the results indicated points of the data set on the XY coordinates of the vertical axis, becomes such as shown in FIG. 9 next.

[0148] 图9是表示在以延长配管密度PP为横轴而以延长配管以外的制冷剂量Muthe,P为纵轴的XY坐标上标示了多个点的状态的图。 [0148] FIG. 9 is a diagram showing the extension pipe to the density of PP as the horizontal axis to extend the amount of the refrigerant pipe than Muthe, P is the vertical axis on the XY coordinates of a plurality of points designated states. 另外,被标示在XY坐标上的各点是基于满足运行数据获取条件的运行数据而得的点,是制冷剂回路10稳定的状态的数据。 Further, each of the points are plotted on the XY coordinates of a point based on operation data acquired meet the operational condition of the data obtained, the data circuit 10 is a stable state refrigerant.

[0149] 以图9的各标示点为基础利用最小平方法来制定线性的近似式。 [0149] In each of the marked points in FIG. 9 based on the least square method to develop a linear approximation formula. 线性的近似式的倾斜度的绝对值成为液体制冷剂延长配管内容积在图9的例子的情况下,成为0.0206。 Linear approximation of the absolute value of the inclination of the formula into a liquid refrigerant extension pipe volume In the example of FIG. 9 become 0.0206. 关于线性的近似式的制定方法在后叙述。 The method developed on the linear approximate expression is described later.

[0150] 根据以上内容,由多个运行数据来计算液体制冷剂延长配管内容积的方法变得明确,返回到图6的流程图的说明。 [0150] According to the above, a plurality of operating data to calculate the liquid refrigerant extension pipe become apparent volume method, the description returns to the flowchart of FIG. 6.

[0151] 在步骤S30中,在判断出获取了多个运行数据的情况下,从存储部3c读取基于各运行数据计算出的计算结果数据组(延长配管密度PP、延长配管以外的制冷剂量MuthOTP)。 In the case [0151] In step S30, it is determined that obtaining a plurality of operating data, 3c read calculated based on each operation data of the calculation result data set from the storage unit (extension pipe density PP, extend refrigerant amount outside pipe MuthOTP). 并且,演算部3b基于所读取的计算结果数据组来进行近似式的计算(S31)。 And, based on the calculation result of the calculation unit 3b sets the read data to calculate the approximate expression (S31). 并且,判断是否满足延长配管内容积确定条件(S32)。 And it determines whether the extension pipe volume satisfies the determination condition (S32). 在不满足延长配管内容积确定条件的情况下,返回到图5的步骤S2,在满足延长配管内容积确定条件的情况下,进入到步骤S33的处理。 In the extension pipe does not satisfy the determination condition of the volume returns to step S2 of FIG. 5, in the case where the extension pipe to meet the volume of the determination condition, the processing proceeds to step S33.

[0152] 在此,延长配管内容积确定条件如以下那样。 [0152] Here, the extension pipe volume determination conditions as described below.

[0153] 第一条件:作为近似式计算所使用的计算结果数据组,制冷剂延长配管密度PP的最大值与最小值之差为任意值以上。 [0153] The first condition: the calculation result data set used for the calculation of the approximate expression, the refrigerant difference between maximum and minimum extension pipe PP density is not less than an arbitrary value.

[0154] 第二条件:所计算的液体制冷剂延长配管内容积具有上限值、下限值。 [0154] The second condition: the calculated liquid refrigerant extension pipe volume has an upper limit value, lower limit value.

[0155] 第三条件:相对于基于满足第一条件的各数据制定的近似式来设置某个任意的幅度的数据使用范围,在存在脱离该范围内数据的数据的情况下,将该数据排除而再次制定近似式。 [0155] The third condition: with respect to each data satisfies a first condition based on the approximate expression to develop the data set using any of a range of magnitude, in the presence of data within the range from the data, the data is excluded The approximate expression develop again.

[0156] 将满足这些条件时的液体制冷剂延长配管内容积确定作为最终的液体制冷剂延长配管内容积的计算结果。 When the liquid refrigerant [0156] The extension pipe satisfying these conditions as a final volume determined liquid refrigerant pipe volume calculation result of the extension.

[0157] 设定第一条件的理由列举有以下内容:在计算近似式时所使用的制冷剂延长配管密度PP的值为相互接近的值的情况下,因小误差就会引起近似式的倾斜度大幅变化。 [0157] The reason for setting the first conditions include the following elements: a case where the value of the refrigerant in the calculation of the approximate expression used in the extension pipe PP density values ​​close to each other, due to small errors will cause the inclination of the approximate expression a substantial change in degree. 然而,通过在第一条件上,如所示那样添加将近似式计算所使用的制冷剂延长配管密度PP 的值的幅度设大的条件,能够减小倾斜度的变化幅度,难以受到因传感器造成的测量误差(设备误差、因周围环境产生的误差)的影响。 However, due to the sensor by resulting in a first condition, as shown in the refrigerant adding this approximate amplitude value used to extend the pipe provided PP large density conditions, the inclination variation width can be reduced, and less susceptible to Effect of measurement error (error in equipment, errors due to the surrounding environment) is. 从而,在通过步骤S31计算近似式时所使用的计算结果数据组不满足第一条件的情况下,取消该近似式,不进行液体制冷剂延长配管内容积的确定。 Thus, the calculation results in the calculation of the data set by the approximate expression used in step S31 does not satisfy the first condition, cancel the approximate equation, the liquid refrigerant is not performed to determine the extension of the pipe volume. 另外,也可以将第一条件组入到步骤S30中,当获得了制冷剂延长配管密度PP的最大值与最小值之差为任意值以上的计算结果数据组时,进入到近似式计算处理。 Further, the first condition may be set into a step S30, the refrigerant is obtained when the difference between the maximum and minimum extension pipe than the density of PP is calculated result data set arbitrary value, into the approximate expression calculation processing.

[0158]另外,设定第二条件的理由列举有以下内容:对于液体制冷剂延长配管内容积预先根据设备确定了内容积的上下限值,有时会脱离该值。 [0158] Further, a second reason for setting the conditions include the following elements: the liquid refrigerant extension pipe volume upper and lower limits of the predetermined volume of the apparatus, sometimes from this value. 然而,如第二条件所示那样,通过使计算出的液体制冷剂延长配管内容积VPI;带有上下限值,能够防止制冷剂量的误计算。 However, as shown in a second condition as calculated by the liquid refrigerant extension pipe volume the VPI; with upper and lower limits, it is possible to prevent an erroneous calculation of the amount of refrigerant.

[0159]另外,设定第三条件的理由列举有以下内容:在获取了数据误差大的数据的情况下,因该数据的影响而使得倾斜度变得不稳定。 [0159] Further, the third reason for setting the conditions include the following contents: In the case where a large error data acquired data, due to the influence of the data such that the inclination becomes unstable. 然而,如第三条件所示那样,通过根据基于满足第一条件的各数据制定出的近似线来排除值差异大的数据,再次求得近似线,能够降低误差的影响而获得精度高的近似式。 However, as shown as a third condition, by a large negative value according to the difference data based on the developed meet the condition data of the first approximate line, an approximate line obtained again, influence of the error can be reduced to obtain high accuracy of approximation formula.

[0160] 仅在满足这些第一〜第三条件的情况下,根据近似式来确定液体制冷剂延长配管内容积VPJS33)。 [0160] In the case where only the first to third satisfying these conditions, the approximate equation to determine the liquid refrigerant extension pipe volume VPJS33). 另外,虽优选满足第一〜第三条件的所有条件,但并不限定于此。 Further, although preferably satisfies all the conditions of the first to third conditions is not limited thereto. 并且, 根据上述(2)式计算气体制冷剂延长配管7的内容积Vrc(S34)。 Then, the gas refrigerant is calculated according to equation (2) of the extension pipe volume Vrc 7 (S34). 并且,利用通过步骤S33计算出的液体制冷剂延长配管内容积VPjP气体制冷剂延长配管内容积VP(;来计算制冷剂总量Mj•。制冷剂总量凡的计算方法在后叙述。接着,将通过上述的处理计算出的液体制冷剂延长配管内容积VPp气体制冷剂延长配管内容积Vrc、基准制冷剂量(在初期充填量为已知的情况下是初期充填量)MrtTD记录到存储器等的存储部3c,结束初期学习。 Then, using the calculated through step S33, the liquid refrigerant extension pipe volume VPjP gas refrigerant extension pipe volume VP (; calculating the total amount of the refrigerant Mj • the total amount of refrigerant calculated Where be described later Next,. calculated by the above-described treatment liquid refrigerant extension pipe volume VPp gas refrigerant extension pipe volume Vrc, the reference refrigerant amount (in the initial charge amount of the case where it is known that the initial charge amount) MrtTD recorded in the memory or the like a storage unit 3c, the end of the initial study.

[0161] (线性近似式的制定方法(最小平方法)) [0161] (linear approximation formula to develop a method (least squares method))

[0162] 以下,如下述示出图6的步骤S31中的线性的近似式的制定方法。 [0162] Here, as shown by the following approximate equation of the linear development of the method the step S31 6 in FIG.

[0163][数1] [0163] [Formula 1]

[0164] f(X) =aX+b ...........(6) [0164] f (X) = aX + b ........... (6)

[0165]在测量点为X时,计算Y与函数值f(X)之差(Yf(X)),若差的平方在所有测量点都小,则Y与f(X)为相近的值。 [0165] When the measurement point is X, calculation of Y and the function value f (X) of the difference (Yf (X)), if the squares of the differences are small in all the measurement points, then Y and f (X) is a value close to . 差的平方的合计T成为下式的(7)式。 The sum of squared difference T becomes the following formula (7).

[0166][数2] [0166] [Formula 2]

[0167] T(合计)=2(Y•f(X))2 ...........(7) [0167] T (Total) = 2 (Y • f (X)) 2 ........... (7)

[0168] 求算接下来的(8)式的T(合计)为最小的函数的系数(a、b)。 (8) the formula T [0168] The next request count (Total) is a minimum coefficient (a, b) function. 若将(6)式代入到(7)式中,则成为下述⑶式。 If (6) is substituted into the formula (7) in the formula, it becomes following formula ⑶.

[0169][数3] [0169] [Formula 3]

[0170] T= 2 (Y-aX-b)2 ...........(8) [0170] T = 2 (Y-aX-b) 2 ........... (8)

[0171] 在将上述(8)式的T以系数(a、b)进行了微分的算式为0时,(8)式的T为最小。 When [0171] In the above formula (8) by a factor of T (a, b) is carried out differential equation 0, (8) where T is the minimum.

[0172] 即,获得接下来的(9)式与(10)式, [0172] That is, to obtain the following formula (9) and (10),

[0173][数4] [0173] [Formula 4]

[0174] 8T/ 8b= 0 ...........(9) [0174] 8T / 8b = 0 ........... (9)

[0175][数5] [0175] [Formula 5]

[0176]8T/8a= 0 ...........(10) [0176] 8T / 8a = 0 ........... (10)

[0177] 若将其解开并整理,则形成下式(11)那样的二元联立方程式。 [0177] If unwound and analyzed, the two yuan simultaneous equations as the following equation (11) is formed.

[0178][数6] [0178] [Formula 6]

[0179] [0179]

Figure CN104596172AD00191

[0180] 二元联立方程式能够以下述矩阵(行列)式(12)进行表述。 [0180] binary simultaneous equations can be expressed in the following matrix (matrix) of formula (12).

[0181] [数7] [0181] [Formula 7]

[0182] AXx=b ...........(12) [0182] AXx = b ........... (12)

[0183] 如(13)式所示那样解开该行列式,计算行列X,计算系数a、b。 [0183] As shown unlock (13) of the determinant, the ranks calculated X, calculation coefficients a, b. 该系数a成为液体制冷剂延长配管内容积VPp The coefficient becomes a liquid refrigerant extension pipe volume VPp

[0184][数8] [0184] [Formula 8]

[0185] x=AH)XbAH)是A的倒数行列...........(13) [0185] x = AH) XbAH) is the inverse of the ranks A ........... (13)

[0186](制冷剂总量Mr的计算方法) [0186] (calculated Mr of the total amount of the refrigerant)

[0187] 以制冷运行为例来说明本实施方式的制冷剂量计算方法。 [0187] In the cooling operation will be described with an example embodiment of the present embodiment the refrigerant quantity calculating method. 另外,对于制热运行也能够采用同样的方法来计算制冷剂总量。 Further, it is possible for the heating operation to calculate the total amount of the refrigerant using the same method.

[0188] 首先,示出根据构成制冷剂回路10的各构成要素的运行状态量演算各构成要素的制冷剂量、演算存在于制冷剂回路10的制冷剂总量凡的方法。 [0188] First, each component shown refrigerant quantity according to the operating elements constituting the refrigerant state quantity calculating circuit 10 of each component, calculating the total amount of the refrigerant present in the refrigerant circuit 10 where the method.

[0189] 制冷剂总量凡如接下来的(14)式所示那样,根据各要素的运行状态求得各要素的制冷剂量,作为其总和获得。 [0189] Where the total amount of the refrigerant as the next (14) as shown in the formula, each element of the refrigerant quantity determined in accordance with the operating state of each element, obtained as a sum thereof.

[0190][数9] [0190] [Formula 9]

[0191] Mr =Mrc+Mre+MrPL+MrPG+MrACC •Mr0IL ...........(14) [0191] Mr = Mrc + Mre + MrPL + MrPG + MrACC • Mr0IL ........... (14)

[0192] 在此,M,。 [0192] Here, M ,. :冷凝器制冷剂量,M蒸发器制冷剂量,M&液体制冷剂延长配管制冷剂量,气体制冷剂延长配管制冷剂量,蓄能器制冷剂量,:油溶解制冷剂量。 : A condenser of refrigerant, an evaporator refrigerant quantity M, M & refrigerant liquid extension pipe refrigerant dose, the gas refrigerant extension pipe refrigerant dose, accumulator refrigerant amount: oil was dissolved refrigerant quantity.

[0193] 以下,对各要素各自的制冷剂量的计算方法依次进行说明。 [0193] Hereinafter, a method of calculating the refrigerant quantity of each of the individual elements will be described sequentially.

[0194](1)室外热交换器23(冷凝器)的制冷剂量Mr。 [0194] (1) 23 outdoor heat exchanger (condenser) refrigerant dose Mr. 的计算 Calculation

[0195] 室外热交换器23作为冷凝器发挥功能。 [0195] The outdoor heat exchanger 23 functions as a condenser. 图10是表示冷凝器内的制冷剂状态的概况的图。 FIG 10 is a diagram showing an overview of the state of the refrigerant in the condenser of FIG. 在冷凝器入口,压缩机21的排出侧的过热度大于0度,因而制冷剂成为气相,另外, 在冷凝器出口,过冷却度大于0度,因而制冷剂成为液相。 In the condenser inlet, the degree of superheat of the discharge side of the compressor 21 is greater than 0 degrees, and thus the refrigerant becomes gas. Further, the condenser outlet, the degree of subcooling is greater than 0 degrees, and thus the refrigerant becomes a liquid phase. 在冷凝器中,温度Td的作为气相状态的制冷剂由温度TA的室外空气冷却,成为温度Tcsg的饱和蒸气,以二相状态通过潜热变化而冷凝,成为温度1;31的饱和液,进而被冷却而成为温度Ts。 In the condenser, the temperature Td as a refrigerant in a gas phase by the outdoor air cooling temperature TA to reach the temperature Tcsg saturated vapor, in a two-phase state is condensed by latent heat change, becoming temperature 1; saturated liquid 31, which in turn is cooled to become temperature Ts. . 的液相。 The liquid phase.

[0196] 冷凝器制冷剂量凡。 [0196] Where a condenser of refrigerant. [kg]由接下来的(15)式表示。 [Kg] represented by the following formula (15).

[0197][数10] [0197] [Formula 10]

[0198]Mrc=VcXpc ...........(15) [0198] Mrc = VcXpc ........... (15)

[0199] 冷凝器内容积Vjm3]由于是装置规格,故而是已知的。 [0199] condenser volume Vjm3] Since a device specification, and therefore are known. 冷凝器的平均制冷剂密度Pc[kg/m3]由接下来的(16)式表示。 The average density of the refrigerant in the condenser Pc [kg / m3] represented by the following formula (16).

[0200] [数11] [0200] [Formula 11]

[0201] Pc=RcgXpcg+RcsXpcs+RclXpcl ...........(16) [0201] Pc = RcgXpcg + RcsXpcs + RclXpcl ........... (16)

[0202] 在此,-]分别表示气相、二相、液相的容积比例。 [0202] Here, -] represent gas phase, two-phase, liquid phase volume ratio. I\g、P。 I \ g, P. 3、Pcl[kg/ m3]分别表示气相、二相、液相的平均制冷剂密度。 3, Pcl [kg / m3], respectively, represent gas, two-phase, the average refrigerant density of the liquid phase. 为了计算冷凝器的平均制冷剂密度,需要计算各相的容积比例以及平均制冷剂密度。 In order to calculate the average density of the refrigerant in the condenser, to be calculated for each volume ratio of the phases and the average refrigerant density.

[0203] (1. 1)冷凝器的气相、二相、液相各自的平均制冷剂密度的计算 [0203] (1.1) of the gas condenser, two-phase, liquid refrigerant density of each of the average calculated

[0204] (a)气相的平均制冷剂密度P。 [0204] (a) the average density of the gas phase of the refrigerant P. 8的计算 Calculation 8

[0205] 气相平均制冷剂密度P。 [0205] The average density of the refrigerant vapor P. 8例如是冷凝器的入口密度Pd与冷凝器中的饱和蒸气密度0。 8, for example, a saturated vapor density of the inlet density Pd 0 in the condenser and the condenser. %的平均值,通过接下来的(17)式求算。 % Of the averaged, calculated by the following formula (17).

[0206] [数12] [0206] [Formula 12]

[0207] [0207]

Figure CN104596172AD00201

[0208] 在此,冷凝器入口密度Pd能够根据冷凝器入口温度(与排出温度Td相当)和压力(与排出压力Pd相当)进行演算。 [0208] Here, condenser inlet Pd density calculation can be performed (with the discharge temperature Td equivalent) and pressure (the discharge pressure Pd equivalent) according to the inlet temperature of the condenser. 另外,冷凝器中的饱和蒸气密度P。 Further, the density of the saturated vapor in the condenser P. %能够根据冷凝压力(排出压力Pd)进行演算。 % Calculation can be performed according to the condensing pressure (discharge pressure Pd).

[0209] (b)二相的平均制冷剂密度P的计算 Calculating the average refrigerant density [0209] (b) a two-phase P

[0210] 二相的平均制冷剂密度P。 [0210] bis average refrigerant density phase P. 3由接下来的(18)式表示。 3 is represented by the following equation (18).

[0211] [数13] [0211] [Formula 13]

[0212] [0212]

Figure CN104596172AD00202

»•*•••«••» \~ip3 »• * •••« •• »\ ~ ip3

[0213] 在此,x为制冷剂的干度[一],feg为冷凝器中的空隙率[一]。 [0213] Here, x is the dryness of the refrigerant [a], feg the porosity of the condenser [a]. Feg由接下来的(19)式表示。 Feg represented by the following Formula (19).

[0214] [数14] [0214] [Formula 14]

[0215] [0215]

Figure CN104596172AD00203

[0216] 在此,s为滑移比[一]。 [0216] Here, s is the slip ratio [a]. 滑移比s的演算式目前提出了大量实验式,作为质量通量Gnv[kgAm2s)]、排出压力Pd、干度x的函数由接下来的(20)式表示。 Slip ratio operation expression s currently proposed a large number of empirical formulas, mass flux as Gnv [kgAm2s)], the discharge pressure Pd, a function of the degree of dryness of x is represented by the following formula (20).

[0217] [数I5] [0217] [Formula I5]

[0218] s =f(Gm,r,Pd,x) ...........(20) [0218] s = f (Gm, r, Pd, x) ........... (20)

[0219] (c)液相的平均制冷剂密度Pel的计算 [0219] Pel average refrigerant density (c) of the liquid phase is calculated

[0220] 液相平均制冷剂密度Pd例如是冷凝器的出口密度Ps。 [0220] Average liquid refrigerant density, for example, Pd Ps is the density of the outlet of the condenser. . 和冷凝器中的饱和液密度口。 And the saturated liquid density in the condenser inlet. 31的平均值,通过接下来的(21)式求算。 The average value of 31, calculated by the following requirements (21).

[0221] [数16] [0221] [Equation 16]

[0222] [0222]

Figure CN104596172AD00204

****«**»"•(21) ****"**""•(twenty one)

[0223] 在此,冷凝器的出口密度Ps。 [0223] Here, the condenser outlet density Ps. . 能够根据从液体侧温度传感器203获得的冷凝器出口温度Ts。 The condenser outlet temperature Ts can be obtained 203 from the liquid-side temperature sensor. . 和压力(与排出压力Pd相当)进行演算。 And pressure (equivalent to the discharge pressure Pd) for calculation. 另外,冷凝器中的饱和液密度P。 Further, the saturated liquid density in the condenser P. 31可通过对压缩机出口的压力进行饱和换算而求得。 31 can be obtained by conversion saturation pressure of the compressor outlet.

[0224] 质量通量Gnv由于根据压缩机的运行频率而有所变化,所以,通过以本方法来计算滑移比S,能够检测演算制冷剂量凡相对于压缩机的运行频率的变化。 [0224] Since the mass flux Gnv vary depending on the operating frequency of the compressor, so that, by the present method to calculate the slip ratio S, where the refrigerant quantity can be detected arithmetic operation with respect to changes in frequency of the compressor.

[0225] 根据以上内容,计算出了用于计算冷凝器的平均制冷剂密度所需的气相、二相、液相的平均制冷剂密度P。 [0225] According to the above, the calculated required for calculating the average refrigerant density of the gas condenser, two-phase, liquid-phase average refrigerant density P. 8、P&Pdlikg/m3]。 8, P & Pdlikg / m3].

[0226] (1. 2)冷凝器的气相、二相、液相各自的容积比例的计算 [0226] (1.2) of the gas condenser, two-phase, liquid phase volume ratio of each calculated

[0227] 接着,对冷凝器的气相、二相、液相的各相的容积比例(R^R。3:1?J[ - ]的计算方法进行说明。容积比例由于通过传热面积的比表示,所以接下来的(22)式成立。 [0227] Next, the gas condenser, two-phase, liquid phase volume ratio of each phase (R ^ R.3:? 1 J [-] of the calculation method will be described since the ratio by volume of the heat transfer area ratio. He said, so the next (22) holds.

[0228] [数17] [0228] [Formula 17]

[0229] [0229]

Figure CN104596172AD00211

••••,,•* <22> •••• ,, • * <22>

[0230] 在此,^人^。 [0230] Here, people ^ ^. 1分别是冷凝器中的气相、二相、液相的传热面积[!112]4(3是冷凝器的传热面积[m2]。另外,若将气相、二相、液相下的各个区域中的比焓差设为AH[kJ/kg],将与制冷剂进行热交换的介质的平均温度差设为ATnirC],则根据热收支平衡,在各相中, 以下的(23)式成立。 1 are vapor condenser, two-phase, liquid phase heat transfer area [! 112] 4 (heat transfer area of ​​the condenser 3 [m2]. Further, if gas, two-phase, liquid phase under the respective specific enthalpy difference region is set to AH [kJ / kg], heat exchange medium will be the average temperature difference between the refrigerant set ATnirC], according to the heat balance, in each phase, the following (23) holds.

[0231][数18] [0231] [Formula 18]

[0232] GrXAH=AKATm ...........(23) [0232] GrXAH = AKATm ........... (23)

[0233] 在此,制冷剂的质量流量[kg/h],A为传热面积[m2],K为传热函数[kW/ (m2* °C)]。 [0233] Here, the refrigerant mass flow rate [kg / h], A is the heat transfer area [m2], K is the transfer function [kW / (m2 * ° C)]. 若将在各相中流出的热通量假设为恒定,则传热函数K成为恒定,容积比例与通过将比焓差AH[kJ/kg]除以制冷剂与室外空气的温度差AT[°C]而得的值成比例。 If the heat flux flowing in each phase is assumed to be constant, the transfer function K is constant, and the ratio by volume than the enthalpy difference AH [kJ / kg] divided by the refrigerant and the outdoor air temperature difference AT [° C] proportional to the value obtained.

[0234] 然而,根据风速分布,对于每个通路,在风吹不到的场所,液相少,在风容易吹到的场所,因传热被促进而使得液相变多,认为制冷剂不均匀。 [0234] However, according to the wind speed distribution, for each passage, not a place in the wind, less liquid, wind blown place easily, because the heat transfer is promoted and the liquid phase increases so that the refrigerant does not uniform. 另外,在液相下,制冷剂与室外空气之间的温度差小,故认为与气相、二相的状态相比热通量变小。 Further, in the liquid phase, the temperature difference between the refrigerant and outdoor air is small, so that the gas phase, two-phase state becomes small compared to the heat flux. 于是,在计算各相的容积比例时,针对液相部乘以冷凝器液相比例修正系数0 [ - ],进行针对上述现象的修正。 Thus, when calculating the ratio of the volume of each phase, for the liquid phase portion by multiplying a correction coefficient proportional condenser 0 [-], corrected for the above phenomenon. 根据以上内容,导出接下来的(24)式。 According to the above, the following derived formula (24).

[0235] [数19] [0235] [Formula 19]

[0236] [0236]

Figure CN104596172AD00212

[0237] 在此,AHcg、AHCS、AHcl分别是气相、二相、液相的制冷剂的比焓差[kj/kg], AI;g、AT&ATd分别是各相与室外空气的温度差[°C]。 [0237] Here, AHcg, AHCS, AHcl are gas phase, two-phase, the specific enthalpy of the liquid refrigerant difference [kj / kg], AI; g, AT & ATd temperature phases and the outdoor air is a difference [° respectively C].

[0238] 在此,冷凝器液相比例修正系数0是通过测定数据求得的值,是根据设备规格、 特别是冷凝器规格而有所变化的值。 [0238] Here, the condenser liquid phase ratio correction coefficient 0 is a value obtained by the measurement data, the value varies according to the apparatus specification, in particular specifications condenser.

[0239]AHeg通过从冷凝器入口的比焓(与压缩机21的排出比焓相当)减去饱和蒸气的比焓而求得。 [0239] AHeg (rather than the discharge enthalpy of the compressor 21) from the condenser through the specific enthalpy of the inlet subtracting the specific enthalpy of saturated vapor is obtained. 排出比焓通过对排出压力Pd以及排出温度Td进行演算而求得,冷凝器中的饱和蒸气的比焓能够根据冷凝压力(与排出压力Pd相当)进行演算。 Specific enthalpy is discharged by the discharge temperature Td and the discharge pressure Pd and computed or determined, specific enthalpy saturated vapor in the condenser can be (corresponding to the discharge pressure Pd) for calculation according to the condensing pressure.

[0240] A11。3通过从冷凝器中的饱和蒸气的比焓减去冷凝器中的饱和液的比焓而求得。 [0240] A11.3 be determined by subtracting the specific enthalpy of saturated liquid from the condenser specific enthalpy saturated vapor in the condenser. 冷凝器中的饱和液的比焓能够根据冷凝压力(与排出压力Pd相当)进行演算。 Specific enthalpy of saturated liquid condenser according to the condensing pressure can be calculations (the discharge pressure Pd equivalent).

[0241] AHd通过从冷凝器中的饱和液的比焓减去冷凝器出口的比焓而获得。 [0241] AHd obtained by subtracting the specific enthalpy of the outlet of the condenser from the specific enthalpy of saturated liquid condenser. 冷凝器出口的比焓通过对冷凝压力(与排出压力Pd相当)以及冷凝器出口温度Ts。 Through condenser outlet specific enthalpy (equivalent to the discharge pressure Pd) and a condenser outlet temperature Ts of the condensing pressure. . 进行演算而获得。 Computed or obtained.

[0242] 对于气相和室外空气的温度差AI;g[°C],例如若假设几乎没有室外空气的温度变化,则利用冷凝器入口温度(与排出温度Td相当)、冷凝器中的饱和蒸气温度T]和室外空气的入口温度TM[°C],作为对数平均温度差由接下来的(25)式表示。 [0242] For a temperature difference between outdoor air and vapor AI; g [° C], for example, assuming that almost no temperature change of the outdoor air, the use of a condenser inlet temperature (discharge temperature Td equivalent), the saturated vapor condenser temperature T] and the inlet temperature of the outdoor air TM [° C], the logarithmic mean temperature difference as represented by the following formula (25).

[0243] [数20] [0243] [Formula 20]

[0244] [0244]

Figure CN104596172AD00221

[0245] 另外,冷凝器中的饱和蒸气温度I;sg能够根据冷凝压力(与排出压力Pd相当)进行演算。 [0245] Further, the saturated vapor temperature of the condenser I; sg is possible (corresponding to the discharge pressure Pd) for calculation according to the condensing pressure.

[0246] 二相与室外空气的平均温度差A1^利用冷凝器中的饱和蒸气温度T。 [0246] The average temperature of the two phase difference between the outdoor air A1 ^ with saturated steam temperature in the condenser T. %以及饱和液温度I;sl根据接下来的(26)式表示。 % And the saturated liquid temperature I; sl shows a following equation (26).

[0247][数21] [0247] [Formula 21]

[0248] [0248]

Figure CN104596172AD00222

* (2®) * (2®)

[0249] 冷凝器中的饱和液温度I;sl能够根据冷凝压力(与排出压力Pd相当)进行演算。 Saturated liquid temperature of the [0249] condenser is I; sl calculations can be performed according to the condensing pressure (discharge pressure Pd equivalent).

[0250] 液相与室外空气的平均温度差ATd利用冷凝器出口温度Ts。 [0250] The average temperature of the outdoor air and the liquid phase using a condenser outlet temperature difference ATd Ts. . 、冷凝器中的饱和液温度1;31和吸入外气温度,作为对数平均温度差由接下来的(27)式表示。 , Saturated liquid temperature in the condenser 1; outer 31 and the suction air temperature, a temperature difference expressed by the following average (27).

[0251][数22] [0251] [Formula 22]

[0252] [0252]

Figure CN104596172AD00223

[0253] 根据以上内容,能够计算各相的容积比例(R^R^Rj。 [0253] From the above, it is possible to calculate the volume ratio of each phase (R ^ R ^ Rj.

[0254] 如上所述,能够计算各相的平均制冷剂密度以及容积比例,能够计算冷凝器平均制冷剂密度P。 [0254] As described above, it is possible to calculate the average refrigerant density, and volume ratio of each phase, the condenser can be calculated the average refrigerant density P. .

[0255] (2)延长配管的制冷剂量MfMrrc的计算 [0255] (2) Prolongation of refrigerant piping MfMrrc

[0256] 液体制冷剂延长配管制冷剂量M^Jkg]以及气体制冷剂延长配管制冷剂量M^Jkg]分别由接下来的(28)式、(29)式表示。 [0256] Liquid refrigerant extension pipe refrigerant dose M ^ Jkg] extension and the gas refrigerant pipe refrigerant dose M ^ Jkg] (29) respectively represented by the following formula (28) formula.

[0257][数23] [0257] [Formula 23]

[0258] MrPL=VPLXpPL ...........(28) [0258] MrPL = VPLXpPL ........... (28)

[0259][数M] [0259] [Number M]

[0260] MrPG=VPGXpPG ...........(29) [0260] MrPG = VPGXpPG ........... (29)

[0261] 在此,P%例如通过对液体制冷剂延长配管入口温度(与冷凝器出口温度Ts。。相当)和液体制冷剂延长配管入口压力(与排出压力Pd相当)进行演算而求得。 [0261] Here, P%, for example, by a liquid refrigerant inlet pipe extension temperature (the outlet temperature of the condenser and the Ts of considerable ..) and a liquid refrigerant inlet extension pipe pressure (the discharge pressure Pd equivalent) is obtained for the calculation.

[0262] 另外,PPe例如通过对气体制冷剂延长配管出口温度(与吸入温度Ts相当)和液体制冷剂延长配管出口压力(与吸入压力Ps相当)进行演算而求得。 [0262] Further, PPe for example, by extending the pipe outlet temperature gas refrigerant (suction temperature Ts equivalent) and a liquid refrigerant outlet extension pipe pressure calculation (the suction pressure Ps equivalent) and determined. 以及Vrc分别是液体制冷剂延长配管内容积[m3]以及气体制冷剂延长配管内容积[m3],利用根据初期学习获得的值。 And Vrc are the liquid refrigerant extension pipe volume [M3] and the gas refrigerant pipe extension volume [m3], in accordance with the value of the initial learning obtained.

[0263] (3)室内热交换器42A、42B(蒸发器)的制冷剂量Mre的计算 [0263] 42A, 42B (evaporator) Calculation of the refrigerant quantity Mre (3) an indoor heat exchanger

[0264] 室内热交换器42A、42B作为蒸发器发挥功能。 [0264] The indoor heat exchanger 42A, 42B to function as an evaporator. 图11是表示蒸发器内的制冷剂状态的概况的图。 FIG 11 is a diagram showing an overview of the state of the refrigerant in the evaporator of FIG. 在蒸发器入口,制冷剂成为二相,在蒸发器出口,压缩机21的吸入侧的过热度大于〇度,因而制冷剂成为气相。 In the inlet of the evaporator, a two-phase refrigerant in the evaporator outlet superheat degree of the suction side of the compressor is greater than 21 square degrees, and thus the refrigerant becomes gas. 在蒸发器入口,温度Tei[°C]的作为二相状态的制冷剂, 通过温度TA[°C]的室内吸入空气加热,成为温度T6Sg[°C]的饱和蒸气,进而被加热而成为温度Ts[°C]的气相。 In the evaporator inlet temperature Tei [° C] as the two-phase state refrigerant sucked by the temperature TA [° C] indoor air is heated to reach the temperature T6Sg [° C] of the saturated vapor, which in turn is heated to attain the temperature Ts [° C] in the gas phase. 蒸发器制冷剂量MM[kg]由接下来的(30)式表示。 An evaporator of refrigerant MM [kg] represented by the following Formula (30).

[0265] [数邪] [0265] [Number evil]

[0266]Mre=VeXpe ...........(30) [0266] Mre = VeXpe ........... (30)

[0267] 在此,1是蒸发器内容积[m3],由于是设备规格故而是已知的。 [0267] Here, the evaporator volume 1 [M3], as is standard equipment therefore are known. 是蒸发器平均制冷剂密度[kg/m3],由接下来的(31)式表示。 An evaporator average refrigerant density [kg / m3], is expressed by the following equation (31).

[0268] [数洸] [0268] [Guang Number]

[0269]Pe=RegXpes+RegXpeg ...........(31) [0269] Pe = RegXpes + RegXpeg ........... (31)

[0270] 在此,1、1^分别是气相、二相的容积比例[-],Pes、Peg表示气相、二相的平均制冷剂密度[kg/m3]。 [0270] Here, ^ 1,1 are gas phase volume ratio of the two phases [-], Pes, Peg shows a gas, two-phase average refrigerant density [kg / m3]. 为了计算蒸发器的平均制冷剂密度,需要计算各相的容积比例以及平均制冷剂密度。 In order to calculate the average density of the refrigerant evaporator, each of the volume ratio of the phases to be calculated, and the average refrigerant density.

[0271] (3. 1)蒸发器的气相、二相各自的平均制冷剂密度的计算 [0271] (3.1) of the evaporator vapor-phase, two-phase calculating respective average refrigerant density of

[0272] (a)蒸发器中的二相平均制冷剂密度pes[kg/m3]的计算 [0272] The average two-phase refrigerant density pes (a) in the evaporator [kg / m3] Calculation

[0273] 二相平均制冷剂密度Pes由接下来的(32)式表示。 [0273] The average two-phase refrigerant density Pes represented by the following Expression (32).

[0274][数27] [0274] [Formula 27]

[0275] [0275]

Figure CN104596172AD00231

"………《32) "........." 32)

[0276] 在此,x为制冷剂的干度[一],feg为蒸发器中的空隙率[一]。 [0276] Here, x is the dryness of the refrigerant [a], feg porosity of the evaporator [a]. f\g由接下来的(33)式表示。 f \ g represented by the following equation (33).

[0277][数如 [0277] [Number as

[0278] [0278]

Figure CN104596172AD00232

[0279] 在此,s为滑移比[一]。 [0279] Here, s is the slip ratio [a]. 滑移比s的演算式目前提出了大量实验式,作为质量通量GMjkg/(m2s)]、吸入压力Ps、干度x的函数由接下来的(34)式表示。 Slip ratio operation expression s currently proposed a large number of empirical formulas, mass flux as GMjkg / (m2s)], Ps of the suction pressure, the dryness of the function represented by the following x (34).

[0280][数29] [0280] [Formula 29]

[0281]s=f(Gm,r,Ps,x) ...........(34) [0281] s = f (Gm, r, Ps, x) ........... (34)

[0282] 质量通量Gnv由于根据压缩机的运行频率而有所变化,所以通过以本方法计算滑移比s,能够检测演算制冷剂量凡相对于压缩机的运行频率的变化。 [0282] Since the mass flux Gnv vary depending on the operating frequency of the compressor, it is calculated in the present process by the slip ratio s, calculating the amount of refrigerant can be detected with respect to every change of the operating frequency of the compressor.

[0283](b)蒸发器中的气相平均制冷剂密度peg[kg/m3]的计算 [0283] The average gas refrigerant density peg (b) in the evaporator [kg / m3] Calculation

[0284] 蒸发器中的气相平均制冷剂密度P例如是蒸发器中的饱和蒸气密度Pesg与蒸发器出口密度的平均值,由接下来的(35)式求得。 [0284] The average density of the refrigerant vapor in the evaporator, for example, P is the average density of the saturated vapor outlet of the evaporator density Pesg the evaporator, obtained by the following Expression (35).

[0285][数30] [0285] [Formula 30]

[0286] [0286]

Figure CN104596172AD00233

*•»**•**>• (3$) * • »** • **> • (3 $)

[0287] 在此,蒸发器中的饱和蒸气密度Pesg能够根据蒸发压力(与吸入压力Ps相当)进行演算。 [0287] Here, the saturated vapor density can be Pesg evaporator (corresponding to the suction pressure Ps) for calculating according to the evaporation pressure. 蒸发器出口密度(与吸入密度Ps相当)能够根据蒸发器出口温度(与吸入温度Ts相当)和压力(与吸入压力Ps相当)进行演算。 Density evaporator outlet (suction considerable density Ps) is possible according to the outlet temperature of the evaporator (suction temperature equivalent to Ts) and pressure (equivalent to the suction pressure Ps) for calculating.

[0288] 根据以上内容,计算出了用于计算蒸发器的平均制冷剂密度所需的二相、气相的平均制冷剂密度Pes、Peg[kg/m3]。 [0288] According to the above, the calculated desired average refrigerant density calculated two-phase evaporator, the average refrigerant density of the gas phase Pes, Peg [kg / m3] is used.

[0289] (3. 2)蒸发器的二相、气相各自的容积比例的计算 [0289] a respective volume ratio of (3.2) the two-phase evaporator, vapor calculated

[0290] 接着,对各相的容积比例的计算方法进行说明。 [0290] Next, a method of calculating the ratio of the volume of each phase will be described. 容积比例由传热面积的比表示,故而接下来的(36)式成立。 Ratio represented by the ratio of the volume of the heat transfer area, and therefore the following (36) holds.

[0291][数31] [0291] [Formula 31]

[0292] [0292]

Figure CN104596172AD00241

(36) (36)

[0293] 在此,Aes、Aeg分别是蒸发器中的二相、气相的传热面积,Ae是蒸发器的传热面积。 [0293] Here, Aes, Aeg evaporator are two-phase, gas phase heat transfer area, heat transfer area Ae of the evaporator. 另外,若将二相、气相各自的区域中的比焓差设为AH,将与制冷剂进行热交换的介质的平均温度差设为ATm,则根据热收支平衡,在各相下,以下的(37)式成立。 Further, when the specific enthalpy difference of the respective two-phase region, the gas phase is defined as AH, medium will be heat-exchanged with the refrigerant ATm mean temperature difference is set, the thermal balance, in each phase, the following (37) holds.

[0294][数32] [0294] [Formula 32]

[0295] GrXAH=AKATm ...........(37) [0295] GrXAH = AKATm ........... (37)

[0296] 在此,G1•是制冷剂的质量流量[kg/h],A是传热面积[m2],K是传热函数[kW/ (m2* °C)]。 [0296] Here, G1 • the refrigerant mass flow [kg / h], A is the heat transfer area [m2], K is the transfer function [kW / (m2 * ° C)]. 若将在各相中流出的热通量假设为恒定,则传热函数K变成恒定,容积比例与通过将比焓差AH[kJ/kg]除以制冷剂与室外空气的温度差AT[°C]而得的值成比例,接下来的比例式(38)成立。 If constant, the transfer function K becomes constant in each phase flowing out of the heat flux is assumed, and the ratio by volume than the enthalpy difference AH [kJ / kg] divided by the refrigerant and the outdoor air temperature difference between the AT [ ° C] obtained by a value proportional to, the following proportional formula (38) is established.

[0297][数如 [0297] [Number as

[0298] [0298]

Figure CN104596172AD00242

…*《獮》 ... * "Hunting"

[0299]AHJI过从蒸发器中的饱和蒸气的比焓减去蒸发器入口比焓而求得。 [0299] AHJI saturated vapor collected from the evaporator by subtracting the specific enthalpy and specific enthalpy of the evaporator inlet is obtained. 蒸发器中的饱和蒸气的比焓通过对蒸发压力(与吸入压力相当)进行演算而获得,蒸发器入口比焓能够根据冷凝器出口温度Ts。 Specific enthalpy saturated vapor of the evaporator by evaporation pressure (the suction pressure equivalent) for calculation is obtained, the specific enthalpy of the inlet of the evaporator outlet temperature of the condenser can be in accordance with Ts. . 进行演算。 Carried out calculations.

[0300] AH6g通过从蒸发器出口的比焓(与吸入比焓相当)减去蒸发器中的饱和蒸气的比焓而求得。 [0300] AH6g be determined by the specific enthalpy of the evaporator outlet (suction quite specific enthalpy) by subtracting the specific enthalpy of saturated vapor in the evaporator. 蒸发器出口的比焓通过对出口温度(与吸入温度Ts相当)以及压力(与吸入压力Ps相当)进行演算而获得。 Outlet specific enthalpy of the evaporator outlet temperature (corresponding to suction temperature Ts) and the pressure (equivalent to the suction pressure Ps) is obtained by calculation performed.

[0301] 蒸发器中的二相与室内空气的平均温度差ATes,例如假设几乎没有室内空气的温度变化,则由接下来的(39)式表示。 [0301] The average temperature of the two phase difference ATes indoor air evaporator, e.g. assuming little change in temperature of the indoor air, followed by the (39) formula.

[0302][数34] [0302] [Formula 34]

[0303] [0303]

Figure CN104596172AD00243

[0304] 在此,蒸发器中的饱和蒸气温度Tesrii过对蒸发压力(与吸入压力Ps相当)进行演算而获得。 [0304] Here, the saturated vapor temperature in the evaporator through evaporation of Tesrii pressure (equivalent to the suction pressure Ps) is obtained for the calculation. 蒸发器入口温度Tei能够根据蒸发压力(与吸入压力Ps相当)进行演算。 An evaporator inlet temperature Tei is possible (equivalent to the suction pressure Ps) for calculating according to the evaporation pressure. 为室内空气温度。 Indoor air temperature.

[0305] 气相与室内空气的平均温度差ATeg作为对数平均温度差由接下来的(40)式表不〇 [0305] The average temperature difference between gas and indoor air ATeg as logarithmic mean temperature difference is not followed by a square (40) Formula table

[0306][数35] [0306] [Formula 35]

Figure CN104596172AD00244

[0308] 在此,蒸发器出口温度Teg作为吸入温度Ts被获得。 [0308] Here, the evaporator outlet temperature Teg Ts is obtained as the suction temperature. 害••筹•#誉垂 •• • # reputation harm chips down

[0307] [0307]

[0309] 根据以上内容,能够计算二相与气相的容积比例(Res:Reg)。 [0309] According to the above, it is possible to calculate the volume ratio of the two phase and gas phase (Res: Reg).

[0310] 如上所述,能够计算各相的平均制冷剂密度以及容积比例,能够计算蒸发器平均制冷剂密度P6。 [0310] As described above, it is possible to calculate the average refrigerant density, and volume ratio of each phase, it is possible to calculate the average density of the refrigerant evaporator P6.

[0311] (4)蓄能器制冷剂量的计算 [0311] (4) Calculation of the refrigerant quantity accumulator

[0312] 在蓄能器入口以及出口,由于压缩机21的吸入侧的过热度大于0度,所以制冷剂成为气相。 [0312] In the accumulator inlet and an outlet, since the degree of superheat of the suction side of the compressor 21 is greater than 0 degrees, so that the refrigerant becomes gas. 蓄能器制冷剂量Mrirc[kg]由接下来的(41)式表示。 Accumulator refrigerant quantity Mrirc [kg] represented by the following equation (41).

[0313] [数邡] [0313] [Number Fang]

[0314]Mr,ACC=VACCXpACC ...........(41) [0314] Mr, ACC = VACCXpACC ........... (41)

[0315] 在此,VACC为蓄能器内容积[m3],由于根据设备规格确定故而是已知的值。 [0315] Here, VACC is an accumulator volume [m3], since a known value is therefore determined according to the device specifications. PACC是蓄能器平均制冷剂密度[kg/m3],对蓄能器入口温度(与吸入温度Ts相当)和入口压力(与吸入压力Ps相当)进行演算而求得。 PACC accumulator is the average refrigerant density [kg / m3], the inlet temperature of the accumulator (and the suction temperature Ts equivalent) and the inlet pressure (equivalent to the suction pressure Ps) is obtained for the calculation.

[0316] (5)溶解在冷冻机油中的制冷剂量的计算 [0316] (5) was dissolved in the refrigerating machine oil in the refrigerant quantity calculating

[0317] 溶解在冷冻机油中的制冷剂的量[kg]由接下来的(42)式表示。 [0317] the amount of refrigerant dissolved in the refrigerating machine oil [kg] represented by the following equation (42).

[0318] [数37] [0318] [Formula 37]

[0319] Mr,0IL=V0ILXp0ILX(i)0IL ...........(42) [0319] Mr, 0IL = V0ILXp0ILX (i) 0IL ........... (42)

[0320] 在此,是存在于制冷剂回路内的冷冻机油的体积[m3],由于是设备规格故而是已知的。 [0320] Here, the refrigerating machine oil is present in the volume of the refrigerant circuit [M3], as is standard equipment therefore are known. 以及巾^分别是冷冻机油的密度[kg/m3]以及制冷剂相对于油的溶解度[一]。 ^ Towel and refrigerating machine oil were the density [kg / m3], and the solubility of the refrigerant oil [a]. 若大部分的冷冻机油存在于压缩机以及蓄能器,则冷冻机油密度以恒定值对待,另外,制冷剂相对于油的溶解度巾[一]如接下来的(43)式所示那样,通过对吸入温度Ts和吸入压力Ps进行演算而求得。 If most of the refrigerating machine oil present in the compressor and the accumulator, the density of the refrigerating machine oil at a constant value treated Further, the refrigerant phase [a] As the next (43) Formula oil solubility towel through intake pressure Ps and the suction temperature Ts and computed or determined.

[0321][数38] [0321] [Formula 38]

[0322] 伞〇几=f(Ts,Ps) ...........(43) [0322] umbrella few square = f (Ts, Ps) ........... (43)

[0323] 根据以上内容,能够计算:⑴冷凝器制冷剂量M,。 [0323] From the above, can be calculated: ⑴ condenser refrigerant amount M ,. ,(2)延长配管制冷剂量MP(液体制冷剂延长配管制冷剂量和气体制冷剂延长配管制冷剂量M的相加量),(3)蒸发器制冷剂量凡6,(4)蓄能器制冷剂量和(5)油溶解制冷剂量。 , (2) the extension pipe refrigerant dose of MP (the liquid refrigerant extension-pipe refrigerant quantity and the gas refrigerant extension adding an amount of pipe refrigerant quantity M), (3) an evaporator of refrigerant Van 6, (4) the accumulator refrigerant quantity and (5) oil was dissolved refrigerant quantity. 通过将这些各制冷剂量全部加在一起,能够求得制冷剂总量凡。 By these respective refrigerant quantity all together, can be obtained where the total amount of the refrigerant.

[0324] 修正方法若实施与液相部有关的修正,则不限定于上述方法,修正部位越多,则越能够高精度地演算制冷剂量。 [0324] When the correction method of correcting the liquid phase portion related embodiment, the method is not limited to the above, the more the correction portion, it is possible to accurately calculate the amount of refrigerant.

[0325] 如以上说明的那样,在本实施方式中,若在通常运行中成为满足运行数据获取条件的运行状态,则自动地依次获取此时的运行数据作为初期学习用的运行数据。 [0325] As described above, in the present embodiment, when the normal operation become satisfying conditions of operation data acquired operation state is automatically sequentially acquires operation data at that time as an initial data for learning operation. 并且,分别基于各运行数据来计算延长配管以外的制冷剂量和延长配管密度,基于该计算结果数据组来计算延长配管内容积。 And, respectively, based on each operation data to calculate the refrigerant amount extend outside pipe and the extension pipe density is calculated based on the calculation result data set extension pipe volume. 从而,不用进行用于计算制冷剂延长配管的内容积的特定的运行, 就能够利用通常运行中的运行数据来计算制冷剂延长配管的内容积。 Whereby without performing a specific operation for calculating the refrigerant extension pipe internal volume, it is possible to calculate the volume of the refrigerant pipe extended by operating data in normal operation. 另外,由于仅仅通过开始通常运行,就可自动地进行制冷剂延长配管的内容积的计算和制冷剂泄漏检测,所以, 无需以往那样实施特定运行的工夫。 Further, since only it can be automatically performed by starting the normal operation, and the refrigerant Prolongation refrigerant leak detection volume of the pipe, it is no need to run a particular time as the conventional embodiment.

[0326] 另外,冷冻空调装置1是已设置的,制冷剂延长配管的内容积即便不明,也可通过进行初期学习,而容易地基于通常运行时的运行数据来计算制冷剂延长配管的内容积以及制冷剂延长配管的制冷剂量。 [0326] In addition, the refrigerating air-conditioning apparatus 1 is set, the refrigerant extension pipe volume even if unknown, can also be carried out initial learning, easily based on the operation during normal operation of the data to calculate the refrigerant extension product pipe refrigerant amount and the refrigerant pipe extension. 因此,当进行制冷剂延长配管的内容积的计算或制冷剂泄漏的有无的判定时,能够极力地减少输入制冷剂延长配管的信息的麻烦。 Thus, when it is determined or calculated volume of refrigerant of the refrigerant pipe extension of presence or absence of a leak can be strongly reduced input trouble information refrigerant extension pipe.

[0327] 另外,在进行初期学习时,判断是否满足初期学习开始条件,S卩,基于在蓄能器24 内无剩余液体制冷剂滞留的运行状态时的运行数据来最终计算制冷剂延长配管的内容积。 [0327] Further, during initial learning, learning is determined whether the initial start condition is satisfied, S Jie, based on the operating time of the operating state with no remaining liquid refrigerant retained in the accumulator 24 calculates the final data to the refrigerant pipe extension internal volume. 为此,能够准确地进行制冷剂延长配管的内容积以及基准制冷剂量的计算。 For this reason, the refrigerant can be accurately calculated volume extension and a reference amount of refrigerant pipe. 从而,能够高精度地计算制冷剂延长配管内的制冷剂量,进而能够高精度地进行冷冻空调装置内的制冷剂总量的计算以及制冷剂泄漏检测。 Thus, it is possible to accurately calculate the refrigerant quantity in the refrigerant extension pipe, and further capable of calculating the total amount of the refrigerant and a refrigerant leakage detection in the refrigerating air-conditioning apparatus with high accuracy. 其结果,能够提早检测制冷剂泄漏,也能够防止自然环境以及冷冻空调装置自身的损伤。 As a result, early detection of refrigerant leakage can be prevented and the environment itself damage refrigerating air-conditioning apparatus.

[0328] 另外,当计算结果数据数量少时,存在给延长配管内容积的计算结果带来各种误差的影响的可能性,但在此由于基于计算结果数据组来计算延长配管内容积,所以难以受到误差的影响。 [0328] Further, if the result of the number of data is small, there is a possibility to extend the pipe volume calculation result of the impact of various errors, but since in this data set based on the calculation result calculated extension pipe volume, it is difficult to affected by the error.

[0329] 另外,在根据计算结果数据组来计算延长配管内容积时,基于计算结果数据组来制定表示制冷剂延长配管密度与延长配管以外的制冷剂量之间的关系的近似式,将该近似式的倾斜度作为制冷剂延长配管的内容积来进行计算。 [0329] Further, when calculating the extension pipe volume calculation results data set based on the calculation result data group to develop a refrigerant to extend the approximate expression representing the relationship between the amount of refrigerant than the pipe density of the extension pipe, the approximation content type as the inclination of the refrigerant pipe extension product be calculated. 由此,能够容易地计算制冷剂延长配管的内容积。 Accordingly, it is possible to easily calculate the volume of the refrigerant pipe extension.

[0330] 另外,制冷剂延长配管有液体制冷剂延长配管6和气体制冷剂延长配管7,在通常运行中,双方配管的密度发生变动。 [0330] Further, the refrigerant extension pipe extension with a change in the density of the liquid refrigerant pipe 6 and the gas refrigerant pipe 7 extended, during normal operation, both the pipe occurs. 从而,需要计算考虑了双方配管密度变动的延长配管密度Pp。 Thus, taking into account both the need to calculate the density variation of the pipe extension-pipe density Pp. 在计算延长配管密度Pp时,通过使用表示气体制冷剂延长配管7的内容积与在液体制冷剂延长配管6的内容积上乘以容积比a而得的值相等的关系式(上述(2)式),能够通过上述(1)式进行计算。 In calculating the extension pipe density Pp, by the use for a gas refrigerant extension pipe volume 7 and the extension pipe in the liquid refrigerant volume multiplying 6 at a volume equal to the ratio of the value of a obtained by the relational expression (the above (2) ) can be calculated by equation (1) above.

[0331] 另外,将满足延长配管内容积确定条件时的制冷剂延长配管内容积确定作为最终的制冷剂延长配管内容积的计算结果。 [0331] Further, satisfying the extension-pipe when the refrigerant pipe extension product of the determination condition is determined as the final volume of the refrigerant pipe volume calculation is extended. 从而,即使使用通常运行时所获得的带有各种误差的运行数据,误差的影响也少,能够高精度地计算制冷剂延长配管内容积,能够提高计算结果的可靠性。 Thus, even with the use of various operating data errors obtained when normal operation, the less influence of the error, the refrigerant can be precisely calculated volume extension pipe, calculation of the reliability can be improved.

[0332] 另外,作为运行数据获取条件指定上述(A)〜(C)的条件,指定制冷剂循环的动作稳定的运行状态。 [0332] Furthermore, designating the acquisition condition (A) ~ (C) as the operating condition data, the operation of the refrigerant cycle to specify a stable operating state. 从而,能够高精度地进行制冷剂延长配管的内容积的计算。 Thus, the refrigerant can be accurately calculated volume of the extension pipe.

[0333] 另外,在上述实施方式中,在判定制冷剂泄漏的有无时,利用步骤S9,通过比较基准制冷剂量(初期充填量)MrtTD与制冷剂总量I来进行判定,但也可以采用以下的方法。 [0333] Further, in the above-described embodiment, when the presence or absence of refrigerant leakage is determined by the step S9, (initial charge amount) MrtTD I to the total amount of refrigerant judged by comparing the reference refrigerant amount, but may be employed the following method. 利用制冷剂泄漏率(相对于适当制冷剂量的演算制冷剂总量比)r[% ]来进行判定。 Determination is performed by the refrigerant leakage rate (relative to the total amount of the proper refrigerant quantity calculating the refrigerant ratio) r [%]. 制冷剂泄漏率r利用初期学习所得的初期充填量MrtTD和步骤S8计算出的制冷剂总量Mp通过接下来的(44)式进行计算。 R refrigerant leakage rate obtained using the initial learning of the initial charge amount MrtTD step S8 and the total amount of refrigerant calculated Mp is calculated by the following Equation (44).

[0334] [数39] [0334] [Formula 39]

[0335] [0335]

Figure CN104596172AD00261

(441) (441)

[0336] 判定部3d对计算出的制冷剂泄漏率r与预先由存储部3c获取的阈值x[% ]进行比较,若r<X,则判定为无制冷剂泄漏,若X< 1,则判定为有制冷剂泄漏。 [0336] 3d the calculated leakage rate r of the refrigerant with a predetermined threshold value in the storage unit 3c acquisition determination unit x [%] compared, if r <X, it is determined that no refrigerant leakage, if X <1, then It determined that there is refrigerant leakage. 在该方法的制冷剂量计算时存在因传感器误差等导致值发生变化的情况,因而在考虑这些因素的基础上来确定阈值。 Changes due to the presence of sensor values ​​leads to errors when the refrigerant quantity calculating method, thereby determining the threshold up in consideration of these factors. 在无制冷剂泄漏的情况下,在步骤S10中发送制冷剂量正常的信息。 In the absence of refrigerant leakage, the refrigerant quantity in the transmitting step S10, the normal information. 在有制冷剂泄漏的情况下,在步骤S11中发送有制冷剂泄漏的信息。 In the case of refrigerant leakage, in step S11 transmits information of refrigerant leakage.

[0337] 在发送有制冷剂泄漏的信息时,通过使显示器等显示机构输出制冷剂泄漏率r,使得作业者容易确认制冷剂回路内的制冷剂量的状态。 [0337] When sending information refrigerant leakage, etc. by display means displays the output refrigerant leakage rate r, so that the operator refrigerant quantity in the refrigerant circuit easily confirm the state.

[0338] 另外,通过显示制冷剂泄漏率r,作业者能够更为详细地掌握装置的状态,能够实现维护性的提高。 [0338] Further, by displaying the refrigerant leak rate r, the operator can grasp the state of the apparatus in more detail, the maintenance can be improved.

[0339]另外,也可以将冷冻空调装置与网络连接而构成制冷剂量判定系统。 [0339] Further, the refrigerating air-conditioning apparatus may be connected to a network to constitute a refrigerant quantity judging system. 具体来讲,连接作为用于对冷冻空调装置的各构成设备进行管理并通过电话线路、LAN线路、无线等与外部进行通信以获取运行数据的管理装置的局部控制器。 Specifically, for the local controller connected to a respective air-conditioning apparatus constituting the refrigerating apparatus to be managed and communicating with the outside through a telephone line, LAN line, a wireless or the like to obtain operating data management apparatus. 并且,经由网络将该局部控制器与接收冷冻空调装置的运行数据的信息管理中心的远距离服务器连接。 Then, the information management center via a network operational data and the local controller receives the refrigerating and air conditioning apparatus connected to the remote server. 另外,在远距离服务器上连接用于存储运行状态量的磁盘装置等的存储装置。 Further, on the remote storage server is connected to means for operating the state quantity storage disk device or the like. 这样,能够构成制冷剂量判定系统。 Thus, the refrigerant quantity judging system can be configured. 例如,考虑以下构成等:将局部控制器作为用于获取冷冻空调装置的运行状态量的测定部以及用于演算运行状态量的演算部,将存储装置作为存储部,使远距离服务器作为比较部、判定部发挥功能。 For example, consider the following configuration and the like: the local controller as a measurement unit for acquiring the operation state quantity of refrigerating and air conditioning apparatus and means for calculating the operating state quantity calculation unit, a storage device as a storage unit, a comparison unit so that the remote server , the determination unit to function. 在该情况下,就无需使冷冻空调装置具有根据当前的运行状态量对演算制冷剂量以及制冷剂泄漏率进行演算比较的功能。 In this case, it is unnecessary to perform refrigerating air-conditioning apparatus has a function of comparing the calculation based on the current operating state and the refrigerant quantity calculating an amount of refrigerant leakage rate. 另外,通过如此构成能够进行远距离监视的系统,在定期维护时,变得无需作业者赶赴到现场来确认制冷剂泄漏的有无的作业, 因而使得设备的可靠性、操作性得到提高。 Further, by thus constituting a system capable of remote monitoring, during periodic maintenance, it becomes no need to rush to the scene the operator to confirm the presence or absence of a refrigerant leak operation, thereby making the reliability of the device, the operability is improved.

[0340] 以上,基于附图对本发明的实施方式进行了说明,但具体的构成并不限于这些实施方式,在不脱离发明构思的范围内能够进行变更。 [0340] or more, drawings, embodiments of the present invention has been described, but the specific configuration is not limited to these embodiments can be modified within the scope not departing from the inventive concept on. 例如,在上述的实施方式中,说明了将本发明应用于能够进行冷热切换的冷冻空调装置中的例子,但并不限定于此,也可以在制冷或是制热专用的冷冻空调装置中应用本发明。 For example, in the above-described embodiment, the present invention is applied will be described an example of cold refrigerating air-conditioning apparatus capable of switching, not limited thereto, may be dedicated to the refrigerating and air-cooling or a heating apparatus application of the present invention. 另外,在上述的实施方式中,将热源单元以及利用单元分别设有一台的冷冻空调装置作为例子,但并不限定于此,也可以在热源单元以及利用单元分别设有多台的冷冻空调装置中应用本发明。 Further, in the above-described embodiment, the heat source unit and a utilization unit are respectively provided with a refrigerating air-conditioning apparatus as an example, but not limited thereto, may be respectively provided with a plurality of refrigerating air-conditioning apparatus in the heat source unit and a utilization unit in application of the present invention.

[0341] 另外,在本实施方式中,通过使压缩机21的吸入侧的过热度大于0度而在蓄能器24内充满气体制冷剂,但是,即使在蓄能器24中混入有液体制冷剂的情况下,也可例如附加对蓄能器24的液面进行检测的传感器以进行液面检测,由于液体以及气体制冷剂的体积比是已知的,所以能够演算存在于蓄能器24的制冷剂量。 [0341] Further, in the present embodiment, the suction by the compressor 21 side of the degree of superheat is greater than 0 degrees and is filled with gas refrigerant in the accumulator 24, however, even 24 mixed refrigerant liquid in the accumulator agent case, for example, may be attached to the accumulator liquid level sensor 24 is for detecting the liquid level detection, since the volume ratio of the liquid refrigerant and the gas is known, can be present in the accumulator 24 calculating the amount of refrigerant.

[0342] 另外,通过上述初期学习,在极力减少了输入制冷剂延长配管的长度等信息的工夫的同时,能够根据通常运行数据来计算制冷剂延长配管内容积。 [0342] Further, the above-described initial learning, at the same time strongly reducing the length of time extension of the refrigerant input information such as a pipe, can be calculated in accordance with the normal operation of the refrigerant pipe extension data volume. 并且,通过从输出部3h 将制冷剂泄漏有无数据经由通信线发送给管理中心等,能够始终进行远距离监视。 Further, the output from the section 3h refrigerant leakage absence data to the management center via a communication line and the like, can be always performed remotely monitored. 因此,对于突然的制冷剂泄漏,也能够在发生设备损伤或能力降低等异常之前立即进行应对,能够极力地抑制制冷剂泄漏的发展。 Thus, for suddenly the refrigerant leakage can be reduced in the event of damage to the equipment or the ability to respond immediately before abnormal, can strongly inhibit the development of refrigerant leakage. 由此,冷冻空调装置1的可靠性也提高,而且还能够极力地防止因制冷剂流出而造成的环境状态恶化,进而能够防止因制冷剂泄漏造成以少的制冷剂量持续不合理运行这样的不良情况,因而也能够实现冷冻空调装置1的长寿命化。 Thus, the reliability of the refrigeration air-conditioning apparatus 1 also increases, but is also possible to optimally prevent environmental state refrigerant flowing out due to deterioration caused, and thus possible to prevent leakage of the refrigerant caused by a small amount of refrigerant continues to run such a problem unreasonably situation, and thus extends the life of the refrigerating and air conditioning apparatus 1.

[0343] 另外,在上述的说明中,对判定制冷剂泄漏的有无的情况进行了说明,但在制冷剂充填时等,也能够在制冷剂量是否过多的判定中应用本发明。 [0343] Further, in the above description, the presence or absence of refrigerant leakage is determined has been described, but when the refrigerant filling the like, can be applied in the present invention is determined whether or not the refrigerant quantity in excess.

[0344]附图标记说明 [0344] REFERENCE NUMERALS

[0345] 1冷冻空调装置,2室外单元、3控制部、3a测定部、3b演算部、3c存储部、3d判定部、3e驱动部、3f显示部、3g输入部、3h输出部,4A、4B室内单元(利用单元)、6液体制冷剂延长配管、6A液体主管、6a液体支管,7气体制冷剂延长配管,7A气体主管,7a气体支管,10 制冷剂回路,l〇a室内侧制冷剂回路,10b室内侧制冷剂回路,10c室外侧制冷剂回路,10z主制冷剂回路,21压缩机,22四通阀,23室外热交换器,24蓄能器,26过冷却器,27室外风扇, 28液体侧关闭阀,29气体侧关闭阀、31室外侧控制部、32a室内侧控制部、33a吸入温度传感器、33b排出温度传感器、33c室外温度传感器、33d液管温度传感器、33e液体侧温度传感器、33f气体侧温度传感器、33g室内温度传感器、33h液体侧温度传感器、33i气体侧温度传感器、33j室内温度传感器、33k热交换温度传感器、331液体侧温度 [0345] 1 refrigerating and air conditioning apparatus outdoor unit 2, 3 a control unit, 3a measurement unit, 3b calculation unit, 3c storage unit, 3d determination unit, 3e drive unit, 3f display unit, 3g input unit, 3h output section, 4A, 4B indoor unit (utilization unit) 6 liquid refrigerant extension pipe, 6A liquid main, 6a liquid branch pipe 7 the gas refrigerant extension pipe, 7A gas main, 7a gas branch pipe 10 of the refrigerant circuit, l〇a indoor-side refrigerant loop, 10b indoor side refrigerant circuit, 10c outdoor side refrigerant circuit, 10Z main refrigerant circuit, a compressor 21, a four-way valve 22, outdoor heat exchanger 23, an accumulator 24, a subcooler 26, an outdoor fan 27 28 the liquid side closing valve, 29 gas-side shut-off valve chamber 31 outside the control unit, 32a indoor side control portion, 33a suction temperature sensor, 33b discharge temperature sensor, 33c outdoor temperature sensor, 33d liquid pipe temperature sensor, 33e liquid-side temperature sensor, the gas side temperature sensor 33F, 33g indoor temperature sensor, the liquid side temperature sensor 33h, the gas side temperature sensor 33i, 33j indoor temperature sensor, a heat exchange temperature sensor 33K, the liquid-side temperature 331 传感器、33z旁通温度传感器、34a吸入压力传感器、34b排出压力传感器,41A、41B膨胀阀,42A、42B室内热交换器, 43A、43B室内风扇,51a分配器,52a分配器,71旁通回路,72旁通流量调整阀。 Sensor, 33Z bypass temperature sensor, 34a suction pressure sensor, 34b discharge pressure sensor, 41A, 41B of the expansion valve, 42A, 42B indoor heat exchanger, 43A, 43B of the indoor fan, the dispenser 51a, 52a dispenser, the bypass circuit 71 , the bypass flow rate adjusting valve 72.

Claims (11)

1. 一种冷冻空调装置,其特征在于,具备: 制冷剂回路,该制冷剂回路由制冷剂延长配管连接作为热源单元的室外单元与作为利用侧单元的室内单元; 测量部,该测量部作为运行数据测量上述制冷剂回路的主要部分的温度和压力; 演算部,该演算部具有获取运行数据时的运行数据获取条件,每当在通常运行中由上述测量部测量到的运行数据所表示的运行状态成为满足上述运行数据获取条件的状态时, 获取此时的运行数据作为初期学习用的运行数据,进行基于该初期学习用的运行数据来计算延长配管以外的制冷剂量和延长配管密度的处理,基于通过该处理计算出的计算结果数据组、以及构成上述制冷剂延长配管的气体制冷剂延长配管和液体制冷剂延长配管的容积比,来计算上述气体制冷剂延长配管和上述液体制冷剂延长配管的各自的内容积,基于 A refrigerating and air conditioning apparatus, comprising: a refrigerant circuit, the refrigerant of the refrigerant circuit is configured as an extension pipe connecting the outdoor unit and the heat source unit by using an indoor unit side unit; measuring unit, the measuring unit as operating temperature and pressure measurement data of a main portion of the refrigerant circuit; calculating portion, the arithmetic operation unit having operation data acquisition data acquisition condition, each time measured by the measuring unit during normal operation of the operating data represented the operating state of a state satisfying the above-described operation data acquisition conditions acquired at this time operational data as the operation data the initial learning is performed is calculated based on the operating data of the initial learning process pipe density of refrigerant and extend beyond extension pipe , based on the calculated by the processing calculation result data sets, and constitute the refrigerant extension gas refrigerant pipe extension pipe and the liquid refrigerant extension volume ratio pipe, to calculate the gas refrigerant extension pipe and said liquid refrigerant extension the volume of each pipe, based on 该计算出的延长配管内容积和上述初期学习用的运行数据来计算作为来自上述制冷剂回路的制冷剂泄漏的判断基准的基准制冷剂量; 存储部,该存储部存储上述延长配管内容积和上述基准制冷剂量;以及判定部,该判定部基于存储在该存储部中的上述延长配管内容积和在通常运行中由上述测量部测量到的运行数据来判定有无制冷剂泄漏。 The calculated extension pipe volume and the beginning of the learning calculated as a refrigerant leak from the refrigerant circuit of the criteria for determining operating data for the reference refrigerant quantity; storage unit, the storage unit stores the extension pipe volume and said reference refrigerant quantity; and a determination section, the determination section based on the extension pipe and the volume measured by the measuring unit in the normal operation of the operating data stored in the storage unit to determine whether refrigerant leak.
2. 如权利要求1所述的冷冻空调装置,其特征在于,上述演算部,基于上述计算结果数据组来制定表示延长配管密度与延长配管以外的制冷剂量之间的关系的近似式,将该近似式的倾斜度的绝对值作为延长配管内容积进行计算。 2. The refrigerating air-conditioning apparatus according to claim 1, wherein said calculation portion, based on the calculation result data group to develop a relationship between approximate expression other than the refrigerant quantity represents the density of the extension pipe and the extension pipe, the the absolute value of the inclination of the approximate expression as an extension of the pipe volume calculation.
3. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述延长配管具有液体制冷剂延长配管和气体制冷剂延长配管; 上述演算部,将表示气体制冷剂延长配管的内容积等于在液体制冷剂延长配管的内容积上乘以规定系数而得到的值的关系式中的上述规定系数,与根据运行数据计算出的气体制冷剂延长配管密度相乘,将该相乘得到的值与根据运行数据计算出的液体制冷剂延长配管密度相加,将该相加得到的值作为上述延长配管密度进行计算。 The refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the extension pipe has a liquid refrigerant extension pipe and a gas refrigerant extension pipe; and the calculation unit, indicating that the gas refrigerant extension pipe volume equal to the predetermined coefficient in relation liquid refrigerant extension pipe volume multiplied by a predetermined coefficient value obtained in, the calculated operating data of the gas refrigerant extension pipe density multiplied, and the value obtained by multiplying the operation data calculated in accordance with the liquid refrigerant extension pipe adding density, obtained by adding the value calculated as a density of the extension pipe.
4. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述演算部,将通过使用制冷剂延长配管密度的最大值与最小值之差为任意值以上的计算结果数据组进行计算得到的延长配管内容积,确定作为最终的延长配管内容积的计算结果。 4. The refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the calculation unit, the difference between maximum and minimum density of the pipe will be extended by the use of the refrigerant calculated value of any of the above calculation result data set extension pipe volume obtained calculation result is determined as the final volume of the extension pipe.
5. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述演算部,在计算出的延长配管内容积处于预先设定的上限值以及下限值的范围内时,将该延长配管内容积确定作为最终的延长配管内容积的计算结果。 The refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the calculation unit, the calculated volume of the extension pipe is in the range of a predetermined upper limit and the lower limit, the extension pipe volume calculation result is determined as the final volume of the extension pipe.
6. 如权利要求2所述的冷冻空调装置,其特征在于,上述演算部,相对于制定出的近似线设置延长配管以外的制冷剂量的上限值与下限值之间的任意幅度的数据使用范围,将脱离该范围的数据去除而进行近似线的再计算,将该再计算后的近似式的倾斜度的绝对值确定作为最终的延长配管内容积的计算结果。 6. The refrigerating air-conditioning apparatus according to claim 2, wherein said calculation portion, between the arbitrary amplitude relative to the approximate line is provided to develop the extension pipe refrigerant quantity than the upper limit and the lower limit value data range, departing from the scope of the data removed to recalculate the approximate line, the absolute value of the inclination of the approximate expression is determined after recalculation calculation result as a final extension of the pipe volume.
7. 如权利要求1或2所述的冷冻空调装置,其特征在于,具备远距离监视功能,该远距离监视功能利用通信线将有无制冷剂泄漏的信息发送给管理中心。 7. The refrigerating air-conditioning apparatus of claim 1 or claim 2, further comprising a remote monitoring function, the remote monitoring function using the communication line to send information to the management center or absence of refrigerant leakage.
8. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述运行数据获取条件将以下条件设为条件之一,即:作为冷冻空调装置的要素设备的压缩机的运行频率、膨胀阀开度以及安装于室内外热交换器的风扇的转速各自的运行状态的变动全都分别处于某个恒定范围内。 8. The refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the data obtaining operating conditions of the following conditions is set to one of the conditions that: as the operating frequency of the compressor elements of the refrigeration air-conditioning apparatus, an expansion variation of each valve opening degree operating state and attached to the indoor heat exchanger fan speed are all within a certain constant range in each.
9. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述运行数据获取条件将以下条件设为条件之一,即:检测制冷剂回路的高压制冷剂压力的高压压力传感器的值为某个恒定值以上、而且检测制冷剂回路的低压制冷剂压力的低压压力传感器的值为某个恒定值以下。 9. The refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the data obtaining operating conditions of the following conditions is set to one of the conditions, namely: the value of the high-pressure sensor for detecting pressure of high pressure refrigerant in the refrigerant circuit a low pressure of low pressure refrigerant to a constant value or more, and the refrigerant circuit detecting sensor is a certain constant value.
10. 如权利要求1或2所述的冷冻空调装置,其特征在于,上述运行数据获取条件为: 室内单元内的室内热交换器中的制冷剂温度与室内温度的差异的变动幅度为恒定值以内, 而且室外单元内的室外热交换器中的制冷剂温度与室外温度的差异的变动幅度为恒定值以内。 10. A refrigerating air-conditioning apparatus of claim 1 or claim 2, wherein the operation data acquisition conditions were: amplitude of fluctuation of the difference in the refrigerant temperature of the indoor heat exchanger in the indoor unit and the indoor temperature at a constant value or less, and the difference in the amplitude fluctuation of the refrigerant temperature of the outdoor heat exchanger within the outdoor unit and the outdoor temperature is less than a constant value.
11. 如权利要求1或2所述的冷冻空调装置,其特征在于,具备将上述判定部的判定结果向外部发送的输出部。 11. A refrigerating air-conditioning apparatus of claim 1 or claim 2, further comprising an output unit transmits the result of the determination to the outside of the judging unit.
CN201510016352.0A 2010-03-12 2010-03-12 Refrigeration air conditioning device CN104596172B (en)

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