WO2011132564A1 - 空気調和装置の冷媒充填方法 - Google Patents

空気調和装置の冷媒充填方法 Download PDF

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Publication number
WO2011132564A1
WO2011132564A1 PCT/JP2011/059061 JP2011059061W WO2011132564A1 WO 2011132564 A1 WO2011132564 A1 WO 2011132564A1 JP 2011059061 W JP2011059061 W JP 2011059061W WO 2011132564 A1 WO2011132564 A1 WO 2011132564A1
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WIPO (PCT)
Prior art keywords
refrigerant
pipe
amount
air conditioner
diameter
Prior art date
Application number
PCT/JP2011/059061
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English (en)
French (fr)
Japanese (ja)
Inventor
隆博 加藤
篤 塩谷
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三菱重工業株式会社
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Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to CN201180004616.0A priority Critical patent/CN102695930B/zh
Priority to EP11771899.9A priority patent/EP2562493B1/de
Publication of WO2011132564A1 publication Critical patent/WO2011132564A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/001—Charging refrigerant to a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/04—Refrigerant level

Definitions

  • the present invention relates to a refrigerant filling method for an air conditioner that can accurately and quickly add an optimum amount of refrigerant to the refrigerant circuit of the air conditioner.
  • a multi-type air conditioner used for air conditioning in a building or the like has a configuration in which a plurality of indoor units are connected to one outdoor unit.
  • the length of the refrigerant pipe (crossover pipe) connecting between the outdoor unit and the plurality of indoor units varies depending on the site or the number of connected indoor units. It is necessary to additionally fill the refrigerant in an amount corresponding to the specifications of the transition pipe, that is, the pipe length and the pipe diameter at the site.
  • additional charging of the refrigerant is usually performed by calculating a specified amount of refrigerant based on the pipe length and the pipe diameter of the transition pipe, and additionally charging the specified amount of refrigerant.
  • the amount of refrigerant to be additionally charged is generally calculated on the site based on the specifications of the crossover piping, and is generally calculated. Therefore, at the site where a new air conditioner is newly installed, the specifications of the transition pipe can be grasped in detail, so that the specified refrigerant amount can be easily and accurately calculated based on the data. .
  • the specifications of the crossover piping may not be known. In some cases, the amount could not be calculated accurately.
  • an air conditioner equipped with an automatic refrigerant filling function that can automatically fill a specified amount of refrigerant in the refrigerant circuit, and the time required to input information related to the transition pipe, while automatically reducing the refrigerant in the refrigerant circuit.
  • an air conditioner that can be charged in an accurate manner so that the suitability of the refrigerant amount can be determined with high accuracy (see, for example, Patent Documents 1 to 3).
  • JP 2002-350014 A Japanese Patent No. 3719246 JP 2007-292429 A
  • the present invention has been made in view of such circumstances, and provides a refrigerant charging method for an air conditioner capable of accurately and quickly additionally charging an optimal amount of refrigerant to a refrigerant circuit.
  • the refrigerant filling method for an air conditioner of the present invention employs the following means. That is, the refrigerant charging method for the air conditioner according to the first aspect of the present invention is a method for supplying a specified amount of refrigerant to a closed cycle refrigerant circuit in which an outdoor unit and a plurality of indoor units are connected via a refrigerant pipe.
  • the pipe length and the pipe diameter of the refrigerant pipe connecting between the outdoor unit and the plurality of indoor units installed on each floor of the building can be reliably measured or assumed.
  • the automatic charging function is used to achieve the specified charging amount. Since the refrigerant is automatically charged until it reaches the specified amount, the specified amount of refrigerant that needs to be finally filled can be accurately filled without excess or deficiency. Therefore, the optimum amount of refrigerant can be charged with high accuracy, and the air conditioner can be stably operated. In addition, since it is not necessary to automatically fill the amount of refrigerant that should be additionally charged from zero, the time required for filling the refrigerant can be shortened, and the installation work time can be shortened and facilitated.
  • the minimum refrigerant amount is at least the side of the refrigerant pipe from the installation position of the outdoor unit to the vertical pipe position along each floor of the building.
  • the vertical pipe of each floor among the pipe length and the pipe diameter, the length of the vertical pipe to the branch portion position of each floor of the refrigerant pipe building, and the pipe diameter thereof It is good also as calculating based on the branch piping length and the pipe diameter which connected between the indoor unit arranged farthest from the position with the straight line.
  • the minimum required refrigerant amount is determined by dividing the horizontal pipe length and the pipe diameter of the refrigerant pipe from the position where the outdoor unit is installed to the vertical pipe position along each floor of the building, and the branch portion of each floor of the refrigerant pipe building.
  • the length of the vertical pipe to the position and its pipe diameter, and among the multiple indoor units installed on each floor, a branch that connects straight to the indoor unit located farthest from the vertical pipe position on each floor Calculation is made based on the pipe length and the pipe diameter. For this reason, even if the detailed specifications of the refrigerant piping connecting between the outdoor unit and multiple indoor units installed on each floor of the building are unknown, it is based on the pipe length and pipe diameter that can be measured or assumed reliably.
  • the length and diameter of the horizontal pipe (main pipe) connected to the outdoor unit can be measured with certainty, and the length of the vertical pipe along each floor of the building and the pipe diameter up to the first branch position are Even if the pipe length is unknown or cannot be measured, it can be assumed from the floor height of the building and the diameter of the horizontal pipe. Furthermore, the length and diameter of branch pipes connected to multiple indoor units arranged on each floor are arranged farthest from the vertical pipe position on each floor even if the actual pipe length is unknown or cannot be measured.
  • the pipe diameter of the horizontal pipe and the pipe diameter up to the first branch position of the vertical pipe are set to the model of the outdoor unit or the nearest It is good also as calculating the said refrigerant
  • the refrigerant amount is calculated by using the pipe diameter of the horizontal pipe and the pipe diameter up to the first branch position of the vertical pipe as the diameter obtained from the measured value of the model of the outdoor unit or the nearest refrigerant pipe. I have to. For this reason, even if the pipe diameter of the pipe up to the first branch position of the horizontal pipe and the vertical pipe is unknown, the horizontal pipe and the vertical pipe are so-called main pipes, and the refrigerant pipe closest to the outdoor unit is extended as it is. It can be assumed with certainty. Therefore, the minimum required refrigerant amount can be accurately calculated by using the pipe diameter obtained from the measured value of the model of the outdoor unit or the nearest refrigerant pipe as the pipe diameter of the horizontal pipe and the vertical pipe.
  • the pipe diameter of the branch pipe and / or the pipe diameter after the first branch portion of the vertical pipe are respectively farthest from the vertical pipe.
  • the refrigerant amount may be calculated as a diameter obtained from the measured value of the model of the indoor unit arranged in the room or the refrigerant pipe nearest to the model.
  • the pipe diameter of the branch pipe and / or the pipe diameter after the first branch portion of the vertical pipe is measured for the model of the indoor unit located farthest from the vertical pipe or the refrigerant pipe nearest to it. Since the refrigerant amount is calculated as the diameter obtained from the value, even if the pipe diameter of the branch pipe and / or the pipe after the first branch part of the vertical pipe arranged on each floor is unknown, The pipe diameter of the branch pipe and / or the vertical pipe can be reliably assumed to be at least the model of the indoor unit farthest from the vertical pipe or the pipe diameter of the refrigerant pipe connected to the indoor unit.
  • the pipe diameter obtained from the measured value of the model of the indoor unit located at the farthest or the nearest refrigerant pipe is set as the pipe diameter of the branch pipe and / or the vertical pipe after the first branch section.
  • the required amount of refrigerant can be accurately calculated.
  • the refrigerant filling method of the air conditioner according to the second aspect of the present invention includes the outdoor unit in which the outdoor unit and the indoor unit of the existing air conditioner are updated, and the existing refrigerant pipe is reused and updated.
  • the air conditioner is renewed by connecting the indoor unit, the refrigerant is filled using any one of the methods described above.
  • the outdoor unit and the indoor unit of the existing air conditioner are updated, and the outdoor unit updated by reusing the existing refrigerant pipe and
  • the refrigerant is filled using any of the above-described methods. For this reason, even if the detailed specifications of the existing refrigerant pipe are unknown, the pipe length and pipe diameter are specified within a range that can be accurately measured or assumed, and the minimum required refrigerant amount is calculated based on that.
  • the refrigerant can be automatically charged until the specified charging amount is reached using the automatic refrigerant charging function. Therefore, the specified amount of refrigerant can be reliably and quickly charged without excess or deficiency even in an air conditioner that renews by reusing existing refrigerant piping.
  • the minimum refrigerant quantity required is calculated based on the refrigerant pipe length and pipe diameter specified within the range that can be actually measured or assumed, and after the refrigerant quantity is additionally charged in advance, the automatic refrigerant filling function Since a specified amount of refrigerant is automatically charged using the, a specified amount of refrigerant can be charged accurately without excess or deficiency. Therefore, the optimum amount of refrigerant can be charged with high accuracy, and the air conditioner can be stably operated. In addition, since it is not necessary to automatically fill the amount of refrigerant that should be additionally charged from zero, the time required for filling the refrigerant can be shortened, and the installation work time can be shortened and facilitated.
  • FIG. 1 It is a schematic perspective view which shows the concept of the installation form example of the air conditioning apparatus which applies the refrigerant
  • FIG. 1 It is a conceptual diagram of the method of assuming the piping length of the branch piping in each floor of the air conditioning apparatus shown in FIG.
  • FIG. 1 It is a flowchart of the judgment point at the time of applying the refrigerant filling method concerning the embodiment of the present invention.
  • FIG. 1 is a schematic perspective view showing a concept of an installation mode example of an air conditioner to which a refrigerant filling method according to an embodiment of the present invention is applied and a method for assuming a pipe length and a pipe diameter of a refrigerant pipe.
  • a multi-type air conditioner 1 for buildings is shown.
  • This air conditioner 1 has three indoor units 11 to 13 and three indoor units installed on the ceilings of the first and second floors with respect to one outdoor unit 10 installed on the roof of a building (building) 40.
  • the machines 14 to 16 are connected via a refrigerant pipe (gas side pipe and liquid side pipe) 2 to form a closed cycle refrigerant circuit 3 of one system.
  • the specifications of the refrigerant pipe (crossover pipe) 2 constituting the refrigerant circuit 3 are, for example, as shown in FIG.
  • a horizontal pipe 2A extending laterally along the roof from the outdoor unit 10 installed on the roof of the building 40 or the like is ⁇ 28.58 mm / ⁇ 12.7 mm ⁇ 10 m, and from the horizontal pipe 2A to the floor height direction of the building 40.
  • the vertical pipe 2B extended to the ceiling part of the second floor is ⁇ 28.58 mm / ⁇ 12.7 mm ⁇ 20 m, and the branch pipe 2C branched from the vertical pipe 2B to the indoor units 11 to 13 installed on the second floor ceiling part.
  • branch pipe 2F extended from the tip of branch pipe 2D to indoor unit 12 ⁇ 12.7 mm / ⁇ 6.35 mm ⁇ 2 m, extended from tip of branch pipe 2D to indoor unit 11
  • the branch pipe 2G is ⁇ 12.7 mm / ⁇ 6.35 mm ⁇ 8 m.
  • the vertical pipe 2H extended from the vertical pipe 2B to the first floor ceiling in the height direction of the building 40 is ⁇ 19.05 mm / ⁇ 9.52 mm ⁇ 4 m, and is further installed in the first floor ceiling.
  • the branch pipes 2I, 2J, 2K, 2L and 2M branched to the machines 14 to 16 are the same as the branch pipes 2C, 2D, 2E, 2F and 2G, respectively.
  • branch pipe 2J is ⁇ 15.88mm / ⁇ 9.52mm x 4m
  • branch pipe 2K is ⁇ 12.7mm / ⁇ 6.35mm x 2m
  • branch pipe 2L is ⁇ 12.7mm / ⁇ 6.35mm x 2m
  • branch pipe 2M is set to ⁇ 12.7 mm / ⁇ 6.35 mm ⁇ 8 m.
  • the amount of refrigerant to be additionally charged as the equivalent of the refrigerant pipe (crossover pipe) 2 is originally the refrigerant pipe 2 (the refrigerant pipe 2 here is a liquid that determines the amount of additional refrigerant. It is necessary to calculate based on piping specifications (pipe diameter and length).
  • the length for each pipe diameter of each liquid side pipe is as follows.
  • the outdoor unit 10 and the indoor units 11 to 16 are updated to new models, and the existing refrigerant pipe (crossover pipe) 2 is reused to renew the air conditioner 1.
  • the refrigerant pipe ( (Transitional piping) Data that records the piping specifications of 2 is lost, and the piping specifications are often unknown.
  • Many of the recent air conditioners 1 have an automatic refrigerant filling function, and it is conceivable to additionally fill the refrigerant by automatic filling. However, when the refrigerant amount for the transition pipe to be originally filled is charged from zero, the charging speed when the automatic refrigerant charging function is used is slow, so that it takes a long time to charge the refrigerant.
  • step S1 it is determined whether or not the piping system drawing of the installation site or the piping size / pipe length is obtained. If YES, the process proceeds to step S2 and NO. If so, the process proceeds to step S3. In step S3, it is determined whether or not the piping system drawing or piping size / pipe length of the installation site can be obtained immediately. If YES, the process moves to step S4, and if NO, the process moves to step S5.
  • Steps S2 and S4 are targeted for those who can completely assume the pipe size, length, etc., and based on this, the amount of refrigerant to be additionally charged is calculated, and a prescribed amount of refrigerant is additionally sealed ( Filling).
  • step S5 is intended for those who cannot or cannot grasp the pipe size / length, etc., and the pipe size / pipe length, etc. are estimated by the method described later, and based on this, the minimum required refrigerant amount is determined. After the calculation, the refrigerant amount is additionally enclosed.
  • the minimum necessary amount of refrigerant is charged in step S5
  • the process proceeds to step S6, and automatic operation is performed to additionally charge the refrigerant to a specified amount using a refrigerant automatic charging function of the air conditioner 1 described later.
  • Step S7 air conditioning operation and other various test operations are performed.
  • the installation work / work is completed, and the process proceeds to step S8 and delivered to the customer.
  • coolant piping (crossover piping) 2 and piping length, are unknown is demonstrated below with reference to FIG. 1 and FIG. (1)
  • the pipe diameter of the horizontal pipe 2A connected to the outdoor unit 10 The pipe diameter of the horizontal pipe 2A can be confirmed by confirming the diameter of the horizontal pipe 2A as the main pipe by actually measuring the model of the existing machine or the pipe. it can. Note that the actual measurement of the piping can be performed with the piping closest to the existing outdoor unit 10.
  • the pipe length can be confirmed by actually measuring or assuming the distance from the installation position of the outdoor unit 10 to the vertical pipe 2B position along the floor height direction of the building 40. Note that the assumed length is assumed to be a straight line distance so that the pipe can be surely present (the same applies to the following).
  • the vertical pipe 2B is the same main pipe as the horizontal pipe 2A, and its diameter is the same as that of the horizontal pipe 2A. This can be confirmed by actually measuring the model of the machine or its piping.
  • the pipe length can be confirmed by actually measuring or assuming the length of the vertical pipe up to the first branch position, that is, the second floor ceiling position.
  • the refrigerant amount required at the minimum can be calculated.
  • the pipe diameter of the vertical pipe 2H since it is difficult to assume the pipe diameter of the vertical pipe 2H, the refrigerant amount is excluded from the calculation target. However, for the vertical pipe 2H, the pipe length is assumed to be one floor high. Of course, by assuming that the pipe diameter is ⁇ 6.35 mm corresponding to the thinnest branch pipe, it may be included in the calculation of the minimum necessary refrigerant amount.
  • the amount of refrigerant that should be additionally charged in the air conditioner 1 is, as shown in FIG. 1, 5 corresponding to the refrigerant pipes (crossover pipes) 2A to 2M in the portions indicated by thick solid lines. .072 kg.
  • refrigerant piping in a range that can be reliably measured or assumed can be specified and roughly determined based on the piping specifications.
  • the refrigerant circuit 3 can be additionally charged in advance before automatically charging 4.128 kg of the refrigerant. This minimum required refrigerant amount exceeds 80% of the refrigerant amount that should be additionally charged, and the remaining 20% may be automatically charged.
  • FIG. 4 shows a refrigerant circuit diagram of the air conditioner 1 with the automatic refrigerant charging function.
  • the outdoor unit 10 includes a compressor 20, a four-way switching valve 21, an outdoor heat exchanger 22, an outdoor expansion valve 23, a receiver 24, and an outdoor fan 25, and a predetermined height position of the receiver 24 and a suction pipe of the compressor 20.
  • a temperature sensor 29 provided on the downstream side of the electromagnetic valve 27 of the refrigerant detection circuit 28 and a refrigerant detection circuit 28 in which a decompression means 26 and an electromagnetic valve 27 are connected. And a refrigerant filling amount detecting means 30 for detecting that a prescribed amount of refrigerant has been filled.
  • the indoor unit 11 (the same applies to the indoor units 12 to 16) includes an indoor heat exchanger 31, an indoor expansion valve 32, and an indoor fan 33.
  • the refrigerant pipe 2 and the illustration of the outdoor unit 10 are omitted.
  • a closed cycle refrigerant circuit 3 is formed by connecting a plurality of units in parallel via a branching device or the like.
  • the automatic refrigerant charging to the air conditioner 1 is performed by operating the air conditioner 1 by a cooling cycle while sucking the refrigerant from the refrigerant cylinder connected to the refrigerant circuit 3 on the suction side of the compressor 20.
  • the refrigerant additionally charged by this refrigerant charging operation is gradually accumulated in the receiver 24 and its liquid level rises. Until the refrigerant liquid level in the receiver 24 reaches the opening end position of the refrigerant detection circuit 28, the saturated gas refrigerant is taken out by the refrigerant detection circuit 28, and the temperature after the refrigerant is depressurized by the decompression means 26 is It is detected by the temperature sensor 29.
  • the saturated liquid refrigerant is taken out, and the temperature after the refrigerant is depressurized by the decompression means 26 is detected by the temperature sensor 29.
  • the set liquid level is set in the receiver 24 via the refrigerant filling amount detection means 30. It is possible to detect that the refrigerant has accumulated in the refrigerant circuit 3. For this reason, about 80% of the specified amount of refrigerant to be additionally charged is preliminarily charged as the minimum required amount of refrigerant in advance, and then the remaining amount of refrigerant corresponding to about 20% is automatically charged by the above method. The specified amount of refrigerant can be filled accurately and quickly.
  • the following effects can be obtained. Even if the specifications (pipe length and pipe diameter) of the pipes 2A to 2M connecting the outdoor unit 10 and the plurality of indoor units 11 to 16 installed on each floor of the building 40 are unknown, By specifying the pipe length and pipe diameter within a range that can be reliably measured or assumed, calculate the minimum amount of refrigerant based on it, add the refrigerant amount in advance, and then use the automatic refrigerant filling function. A specified amount of refrigerant can be automatically charged. For this reason, it is possible to accurately and accurately fill the specified amount of refrigerant that needs to be finally filled, and as a result, the optimum amount of refrigerant can be charged accurately and the air conditioner can be stably operated. it can. In addition, since it is not necessary to automatically fill the amount of refrigerant that should be additionally charged from zero, the time required for filling the refrigerant can be shortened, and the installation work time can be shortened and facilitated.
  • the minimum refrigerant amount is determined based on the pipe length and diameter of the horizontal pipe 2A from the installation position of the outdoor unit 10 to the vertical pipes 2B and 2H along the floors of the building 40, and the floors of the building 40 of the refrigerant pipe 2.
  • the pipe lengths of the vertical pipes 2B and 2H up to the branching position and the pipe diameter thereof are arranged farthest from the vertical pipe position on each floor. The calculation is made based on the branch pipe length and the pipe diameter connecting the indoor units 11 and 14 with a straight line.
  • the pipe length can be measured or assumed reliably.
  • the minimum required amount of refrigerant in a range not exceeding the amount of refrigerant originally to be additionally charged can be calculated, and the refrigerant can be additionally charged in advance.
  • the minimum required amount of refrigerant is roughly estimated, it corresponds to about 80% of the amount of refrigerant originally to be additionally charged, and the refrigerant charging time can be greatly shortened.
  • the length and diameter of the horizontal pipe (main pipe) 2A connected to the outdoor unit 10 can be measured with certainty, and the length of the vertical pipe 2B along each floor of the building 40 and the pipe diameter up to the first branch position. Can be assumed from the floor height of the building 40 and the diameter of the horizontal pipe 2A even if the actual pipe length is unknown or cannot be measured. Furthermore, the length and diameter of the branch pipes 2C to 2M connected to the plurality of indoor units 11 to 16 arranged on each floor are the vertical pipes 2B on each floor even if the actual pipe length is unknown or cannot be measured. , 2H position can be assumed from the distance between the indoor units 11 and 14 arranged farthest from the 2H position with a straight line and its branch pipe diameter. Therefore, by calculating the amount of refrigerant based on these pipe lengths and pipe diameters, the minimum necessary refrigerant amount corresponding to about 80% within a range not exceeding the normal refrigerant amount that should be additionally charged. Can be calculated reliably.
  • the amount of refrigerant is calculated using the pipe diameter of the horizontal pipe 2A and the pipe diameter up to the first branch position of the vertical pipe as the diameter obtained from the measured value of the model of the outdoor unit 10 or the nearest refrigerant pipe, Further, the pipe diameters of the branch pipes 2C to 2M and / or the pipe diameter of the vertical pipe 2H are obtained from the measured values of the models of the indoor units arranged farthest from the vertical pipes 2B and 2H or the refrigerant pipes closest thereto. The refrigerant quantity is calculated as the diameter. For this reason, even if the pipe diameter of each pipe is unknown, it is possible to reliably assume the pipe diameter, and as a result, the minimum necessary refrigerant in a range closer to the specified refrigerant amount. The amount can be calculated with high accuracy.
  • the outdoor unit 10 and the indoor units 11 to 16 of the existing air conditioner 1 are updated, and the outdoor unit 10 and the indoor units 11 to 16 that are updated by reusing the existing refrigerant pipe 2 are connected to the air conditioner.
  • the pipe length and pipe diameter are specified within a range that can be measured or assumed accurately, and based on that
  • this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably.
  • the outdoor unit 10 is installed on the roof of the building 40 has been described.
  • the outdoor unit 10 may be installed on the ground or the like, and the installation location is not particularly limited.
  • the pipe length and pipe diameter of the refrigerant pipe can be assumed in the same manner regardless of the location.
  • the number of connected indoor units 11 to 16 is not particularly limited.
  • the automatic charging of the refrigerant has been described with respect to the example using the method of detecting the liquid level of the refrigerant in the receiver 24 by the refrigerant detection circuit 28.
  • the present invention is not limited to this. Any method may be used as long as it detects that the specified amount of refrigerant is filled while observing the operating state of the harmony device 1 and automatically fills it.
  • the example in the case of renewing the air conditioning apparatus 1 was demonstrated in the said embodiment, of course, it can apply similarly at the time of installation in the case of newly installing the air conditioning apparatus 1.
  • Air conditioning apparatus Refrigerant piping 2A Horizontal piping 2B, 2H Vertical piping 2C, 2D, 2E, 2F, 2G, 2I, 2J, 2K, 2L, 2M Branch piping 3 Refrigerant circuit 10 Outdoor unit 11, 12, 13, 14, 15, 16 Indoor unit 28 Refrigerant detection circuit 30 Refrigerant filling amount detection means 40 Building (building)

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
PCT/JP2011/059061 2010-04-21 2011-04-12 空気調和装置の冷媒充填方法 WO2011132564A1 (ja)

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Application Number Priority Date Filing Date Title
CN201180004616.0A CN102695930B (zh) 2010-04-21 2011-04-12 空调装置的制冷剂填充方法
EP11771899.9A EP2562493B1 (de) 2010-04-21 2011-04-12 Verfahren zur füllung eines klimaanlagen-kühlgerätes

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JP2010097957A JP5705453B2 (ja) 2010-04-21 2010-04-21 空気調和装置の冷媒充填方法
JP2010-097957 2010-04-21

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* Cited by examiner, † Cited by third party
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CN104990320A (zh) * 2015-07-16 2015-10-21 广东美的暖通设备有限公司 一种冷媒自动充注的控制方法及系统

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* Cited by examiner, † Cited by third party
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JP5642098B2 (ja) * 2012-02-21 2014-12-17 三菱電機株式会社 冷媒量推定装置及び冷媒量推定方法
CN104748287A (zh) * 2013-12-25 2015-07-01 珠海格力电器股份有限公司 选型软件构建及计算管长的方法及系统和中央空调器
CN106766304B (zh) * 2016-12-22 2019-04-26 中科美菱低温科技股份有限公司 一种分离式低温制冷设备
JP2019011899A (ja) 2017-06-30 2019-01-24 株式会社富士通ゼネラル 空気調和装置
CN113932503B (zh) * 2021-11-24 2023-04-07 宁波奥克斯电气股份有限公司 一种制冷剂充注装置及控制方法
CN114674095B (zh) * 2022-03-16 2024-04-23 青岛海尔空调器有限总公司 空调器、用于控制空调冷媒的方法、装置和存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821675A (ja) * 1994-07-06 1996-01-23 Hitachi Ltd 空気調和機およびその冷媒量判定方法
JPH08200905A (ja) * 1995-01-20 1996-08-09 Hitachi Ltd 冷媒量の指示装置
JPH1163745A (ja) * 1997-08-08 1999-03-05 Hitachi Ltd 空気調和機の冷媒封入量指示装置及び監視装置
JP2002350014A (ja) * 2001-05-22 2002-12-04 Daikin Ind Ltd 冷凍装置
JP3719246B2 (ja) * 2003-01-10 2005-11-24 ダイキン工業株式会社 冷凍装置及び冷凍装置の冷媒量検出方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4155313B2 (ja) * 2006-06-26 2008-09-24 ダイキン工業株式会社 空気調和装置
JP2008111584A (ja) * 2006-10-30 2008-05-15 Daikin Ind Ltd 空気調和装置
KR100850952B1 (ko) * 2007-03-14 2008-08-08 엘지전자 주식회사 공기 조화기, 이의 냉매관 길이 및 적정 냉매량 산정 방법
JP4902866B2 (ja) * 2007-03-23 2012-03-21 三菱電機株式会社 冷媒充填方法
JP5326488B2 (ja) * 2008-02-29 2013-10-30 ダイキン工業株式会社 空気調和装置
KR101250243B1 (ko) * 2008-09-05 2013-04-04 엘지전자 주식회사 배관 거리 감지 장치 및 감지 방법
EP2369270B1 (de) * 2010-03-10 2020-02-05 LG Electronics Inc. Klimatisierungssystem und Verfahren zur Berechnung der Einfüllmenge des notwendigen Kühlmittels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821675A (ja) * 1994-07-06 1996-01-23 Hitachi Ltd 空気調和機およびその冷媒量判定方法
JPH08200905A (ja) * 1995-01-20 1996-08-09 Hitachi Ltd 冷媒量の指示装置
JPH1163745A (ja) * 1997-08-08 1999-03-05 Hitachi Ltd 空気調和機の冷媒封入量指示装置及び監視装置
JP2002350014A (ja) * 2001-05-22 2002-12-04 Daikin Ind Ltd 冷凍装置
JP3719246B2 (ja) * 2003-01-10 2005-11-24 ダイキン工業株式会社 冷凍装置及び冷凍装置の冷媒量検出方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104990320A (zh) * 2015-07-16 2015-10-21 广东美的暖通设备有限公司 一种冷媒自动充注的控制方法及系统

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