WO2013038599A1 - Climatiseur - Google Patents

Climatiseur Download PDF

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Publication number
WO2013038599A1
WO2013038599A1 PCT/JP2012/005219 JP2012005219W WO2013038599A1 WO 2013038599 A1 WO2013038599 A1 WO 2013038599A1 JP 2012005219 W JP2012005219 W JP 2012005219W WO 2013038599 A1 WO2013038599 A1 WO 2013038599A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
air conditioner
suction port
indoor unit
exhaust
Prior art date
Application number
PCT/JP2012/005219
Other languages
English (en)
Japanese (ja)
Inventor
川邉　義和
藤高　章
一彦 丸本
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2013533472A priority Critical patent/JP6016130B2/ja
Priority to KR1020137023565A priority patent/KR20140064711A/ko
Priority to CN201280010367.0A priority patent/CN103392102B/zh
Publication of WO2013038599A1 publication Critical patent/WO2013038599A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0041—Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids

Definitions

  • the present invention relates to an air conditioner that forms a refrigeration and heat pump cycle using a refrigerant and performs air conditioning, and in particular, in an air conditioner that constitutes a cycle using a combustible refrigerant, leakage of the refrigerant is detected.
  • the present invention relates to a technique for exhausting air in an indoor unit.
  • HFC hydrofluorocarbons
  • HFO-1234yf Hydrofluoroolefin (hereinafter referred to as HFO) is attracting particular attention as an alternative refrigerant for HFC-134a, and its practical application to an air conditioner for automobiles is being promoted.
  • HFO-1234yf has a GWP (100 years) of 4, which is very small compared to HFC-134a GWP1430 and HFC-410A GWP2090 used in air conditioners and the like.
  • the characteristic that HFO-1234yf has a small GWP is attributed to the fact that it has a double bond between carbons and is easily decomposed.
  • HFCs having a relatively low GWP and usable as a refrigerant there are slightly flammable HFC-32 (GWP675), which accounts for 50% of HFC-410A, and weakly flammable HFC-152a (GWP124). Strongly flammable hydrocarbons also have excellent characteristics as refrigerants.
  • ammonia is used as a refrigerant.
  • Ammonia is not only flammable but also toxic, as with the above gases, and is therefore more difficult to handle than HFC-32. Therefore, in the air conditioner of Patent Document 1, a sensor for detecting leakage of the refrigerant is provided near the outlet of the indoor unit.
  • the air outlet damper When the leakage of the refrigerant is detected by the sensor, the air outlet damper is closed, while the air outlet damper is opened, and the indoor unit fan is rotated. Thereby, the air inside the indoor unit taken in from the intake port is sent to the exhaust port together with the leaked refrigerant by the rotation of the fan, and is exhausted outside the room.
  • An object of the present invention is to solve the above-described conventional problems, and in an air conditioner that uses a flammable refrigerant, the air conditioner has high exhaust efficiency of the leaked refrigerant, is small, and has excellent installation properties. Is to provide.
  • an air conditioner of the present invention is an air conditioner using a flammable refrigerant, and at least two or more refrigerants are added to an indoor unit arranged on the indoor side.
  • the exhaust means detects the concentration of the refrigerant in the indoor unit. High air is selectively sucked and exhausted to the outside.
  • the present invention it is possible to quickly detect leakage of the refrigerant and efficiently discharge the leaked refrigerant even with a small displacement, and it is possible to realize a small and excellent air conditioner.
  • FIG. 1 is a configuration diagram of an air conditioner according to an embodiment of the present invention.
  • the air conditioner of the present invention is an air conditioner that uses a flammable refrigerant, and the indoor unit disposed on the indoor side has at least two or more refrigerant detection means for detecting the refrigerant, and the indoor unit And exhaust means for exhausting the air inside the room to the outside, and when the refrigerant detection means detects the refrigerant, the exhaust means selectively sucks air having a high concentration of the refrigerant in the indoor unit to the outside. It is configured to exhaust. According to this configuration, it is possible to quickly detect the leakage of the refrigerant, efficiently exhaust the leaked refrigerant with a small displacement, and to realize a small-sized air conditioner with excellent installation properties.
  • the exhaust means includes a suction duct portion, an exhaust blower, and an exhaust duct, and the suction duct portion includes a suction port that sucks the leaked refrigerant, and a suction port drive device that moves the suction port; It is preferable that the suction port drive device is configured to move the suction port to a place near a place where the concentration of the refrigerant is high based on a detection result of the refrigerant detection means. . According to this configuration, with a simple configuration of one exhaust blower and one suction port driving device, it is possible to efficiently exhaust the leaked refrigerant with a small exhaust amount, and to provide a small and inexpensive air conditioner. it can.
  • the refrigerant detection means is disposed below the indoor unit. According to this structure, the leakage of the refrigerant heavier than air can be detected quickly, and an air conditioner having high safety can be provided.
  • the heat exchanger used in the indoor unit is a plate fin tube type heat exchanger, and the refrigerant detecting means is disposed at a portion where at least the tubes at both ends of the heat exchanger are exposed. It is preferable. According to this configuration, since the refrigerant detection means is arranged in a portion where the refrigerant is likely to leak and stay, it is possible to quickly detect the refrigerant leakage and to provide a highly safe air conditioner. can do.
  • the suction port driving device is configured to move the suction port substantially in parallel with a straight line connecting refrigerant detection means arranged at both ends of the heat exchanger.
  • the said suction inlet drive device can be comprised easily, and a small and cheap air conditioner can be provided.
  • FIG. 1 shows a configuration diagram of an air conditioner according to an embodiment of the present invention.
  • an indoor unit 100 of an air conditioner in the present embodiment includes an indoor fan 101 and a plate fin tube type indoor heat exchanger 102.
  • a gas side pipe 112 and a liquid side pipe 113 are connected to the indoor heat exchanger 102.
  • the gas side pipe 112 and the liquid side pipe 113 are connected to an outdoor unit (not shown) installed outside through a pipe hole 115 provided in the wall 114.
  • the outdoor unit includes a compressor (not shown), an outdoor heat exchanger (not shown), and the like.
  • HFO-1234yf is used as the refrigerant.
  • HFO-1234yf is a gas that has a low global warming potential (GWP) and has attracted attention as a next-generation refrigerant that replaces R134a and R410A.
  • GWP global warming potential
  • HFO-1234yf has slight flammability. For this reason, when HFO-1234yf leaks, there is a possibility of burning.
  • the air conditioner in the present embodiment includes at least two or more refrigerant detection means for detecting refrigerant leakage and an exhaust means for exhausting the air inside the indoor unit 100 to the outside in the indoor unit 100.
  • the exhaust means is configured to selectively suck in the air having a high refrigerant concentration in the indoor unit 100 and exhaust the air to the outside.
  • “at least two or more refrigerant detection means” are configured by the refrigerant detection sensors 103 to 105.
  • the “exhaust means” includes an exhaust blower 106, a suction duct 107, and an exhaust duct 110.
  • the suction duct 107 and the exhaust duct 110 are configured to be extendable and contracted, and one end of each is connected to the exhaust blower 106.
  • the exhaust blower 106 When any one or more of the refrigerant detection sensors 103 to 105 detect the leakage of the refrigerant, the exhaust blower 106 is driven.
  • the exhaust blower 106 sucks air inside the indoor unit 100 from the suction port 108 of the suction duct 107 as suction air 116 and discharges it from the exhaust duct 110 to the outside as exhaust 117. This greatly reduces the risk of HFO-1234yf burning.
  • the refrigerant detection sensors 103 to 105 for example, semiconductor type gas sensors can be used.
  • the refrigerant detection sensor 103 and the refrigerant detection sensor 105 are disposed at both ends of the indoor heat exchanger 102. More specifically, the refrigerant detection sensor 103 is disposed below the U-shaped tube side end of the indoor heat exchanger 102.
  • the refrigerant detection sensor 105 is disposed below the welding side end of the indoor heat exchanger 102.
  • the U-shaped tube side end and the welding side end are located at positions facing each other across the main body of the indoor heat exchanger 102.
  • the indoor heat exchanger 102 At both ends of the indoor heat exchanger 102, a refrigerant pipe (not shown) is exposed, condensation occurs on the surface of the refrigerant pipe, a hole is opened in the refrigerant pipe due to corrosion or the like, and the refrigerant is likely to leak. is there. Moreover, the both ends of the indoor heat exchanger 102 are places where the air blown by the indoor blower 101 is difficult to flow and the leaked refrigerant is likely to stay.
  • the refrigerant detection sensor 104 is disposed below the central portion of the indoor heat exchanger 102. Below the center part of the indoor heat exchanger 102 is a place where the refrigerant is easily detected when the refrigerant leaks from the heat exchange part of the indoor heat exchanger 102.
  • the suction duct 107 is provided with a suction port driving device 109 that moves the suction port 108.
  • the suction port drive device 109 is configured to move the suction port 108 along a straight line connecting the refrigerant detection sensor 103, the refrigerant detection sensor 104, and the refrigerant detection sensor 105.
  • the suction port 108, the suction port driving device 109, and the suction duct 107 constitute a “suction duct portion”.
  • the refrigerant detection sensors 103 to 105, the exhaust blower 106, and the suction port driving device 109 are electrically connected to the controller 111.
  • the controller 111 determines an appropriate position of the suction port 108 based on the output signals of the refrigerant detection sensors 103 to 105, controls the driving of the suction port driving device 109, and controls the driving of the exhaust blower 106.
  • the refrigerant detection sensors are provided at three locations, the refrigerant leakage can be detected more quickly than a conventional air conditioner provided with the refrigerant detection sensor only at one location. Can do.
  • the air conditioner it is possible to determine where in the indoor unit the refrigerant leaks based on the output signals of the refrigerant detection sensors 103 to 105. For example, when the output signal of the refrigerant detection sensor 104 is larger than the output signals of the refrigerant detection sensors 103 and 105, that is, the refrigerant concentration in the intake air 116 is much higher than the average refrigerant concentration inside the indoor unit 100. If it is high, it can be determined that the leakage point of the refrigerant is in the center of the indoor heat exchanger 102.
  • the suction port drive device 109 moves the suction port 108 to the vicinity of the refrigerant detection sensor 104, sucks the suction air 116 by the exhaust blower 106, and discharges it as the exhaust 117 through the exhaust duct 110.
  • the exhaust blower 106, the suction duct 107, and the exhaust duct 110 can be reduced in size, and as a result, the whole indoor unit 100 can be reduced in size and an air conditioner excellent in installation property can be realized.
  • the exhaust duct 110 can be guided to the outside through the piping hole 115 of the wall 114 together with the gas side piping 112 and the liquid side piping 113.
  • the need to provide piping holes can be eliminated.
  • the refrigerant detection sensors 103 to 105 are disposed below the indoor unit 100, the refrigerant leaks with a characteristic that it is heavier than air and moves downward. Can be detected.
  • coolant detection sensor 103 is arrange
  • the suction duct 107 is provided with the suction port drive device 109, and the suction port 108 is a straight line connecting the refrigerant detection sensor 103, the refrigerant detection sensor 104, and the refrigerant detection sensor 105. Therefore, the suction port 108 is quickly moved to the refrigerant leakage position estimated based on the output signals of the refrigerant detection sensors 103 to 105, and the air having the highest refrigerant concentration is quickly exhausted. Can do.
  • the suction port drive device 109 is provided in the suction duct 107 to move the suction port 108, but the present invention is not limited to this.
  • the suction duct 107 may be fixed, a plurality of dampers may be provided in the suction duct 107, and the suction position of the leaked refrigerant may be changed by controlling the opening and closing of the damper. With this configuration, the same effect as that of the air conditioner according to the present embodiment can be obtained.
  • moving the suction port 108 by the suction port driving device 109 can minimize the number of driving devices, and can finely control the moving position of the suction port 108, thereby improving exhaust efficiency. it can.
  • HFO-1234yf is used as the refrigerant, but the present invention is not limited to this.
  • HFO-1234ze or other HFO may be used as the refrigerant.
  • a mixed refrigerant containing HFO such as HFO-1234yf or HFO-1234ze, a single refrigerant such as HFC-32 or HFC-152a, a mixed refrigerant, or a hydrocarbon refrigerant may be used as the refrigerant. Even in this case, the same effect as the air conditioner according to the present embodiment can be obtained.
  • the present invention can increase the exhaust efficiency of the leaked refrigerant and can achieve downsizing and improve installation, so that it is not limited to an air conditioner, but a separate type showcase, refrigerator, heat pump type hot water It can be widely applied to vessels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention porte sur un climatiseur, qui utilise un agent réfrigérant inflammable, et qui comporte une unité intérieure (100) disposée à l'intérieur, laquelle comporte ce qui suit : au moins deux moyens de détection d'agent réfrigérant (103, 105) qui détectent un agent réfrigérant ; et une soufflante d'évacuation (106) par laquelle de l'air à l'intérieur de l'unité intérieure (100) est évacué vers l'extérieur. Si un moyen de détection d'agent réfrigérant (103 ou 105) détecte un agent réfrigérant, la soufflante d'évacuation (106) aspire de façon sélective de l'air à concentration élevée en agent réfrigérant dans l'unité intérieure (100) et évacue ledit air à l'extérieur. Cette configuration rend possible d'évacuer efficacement un agent réfrigérant qui a fui avec un faible volume d'évacuation, permettant d'obtenir un climatiseur qui a un faible facteur de forme et qui est facile à installer.
PCT/JP2012/005219 2011-09-14 2012-08-21 Climatiseur WO2013038599A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013533472A JP6016130B2 (ja) 2011-09-14 2012-08-21 空気調和機
KR1020137023565A KR20140064711A (ko) 2011-09-14 2012-08-21 공기 조화기
CN201280010367.0A CN103392102B (zh) 2011-09-14 2012-08-21 空气调节机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011200470 2011-09-14
JP2011-200470 2011-09-14

Publications (1)

Publication Number Publication Date
WO2013038599A1 true WO2013038599A1 (fr) 2013-03-21

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PCT/JP2012/005219 WO2013038599A1 (fr) 2011-09-14 2012-08-21 Climatiseur

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JP (1) JP6016130B2 (fr)
KR (1) KR20140064711A (fr)
CN (1) CN103392102B (fr)
WO (1) WO2013038599A1 (fr)

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WO2016006267A1 (fr) * 2014-07-08 2016-01-14 三菱電機株式会社 Dispositif de climatisation
WO2016009667A1 (fr) * 2014-07-15 2016-01-21 三菱電機株式会社 Appareil de climatisation
WO2016151641A1 (fr) * 2015-03-26 2016-09-29 三菱電機株式会社 Unité intérieure de climatiseur
WO2016163380A1 (fr) * 2015-04-06 2016-10-13 ダイキン工業株式会社 Dispositif de climatisation côté utilisateur et dispositif climatisation le comprenant
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JPWO2015194596A1 (ja) * 2014-06-19 2017-04-20 三菱電機株式会社 空気調和装置の室内機、及びその室内機を備えた空気調和装置
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EP3199883A4 (fr) * 2014-09-25 2018-05-02 Mitsubishi Electric Corporation Appareil de pompe à chaleur
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EP3264000A4 (fr) * 2015-03-26 2018-11-07 Mitsubishi Electric Corporation Unité intérieure pour climatiseur
WO2019077696A1 (fr) * 2017-10-18 2019-04-25 三菱電機株式会社 Climatiseur
FR3073040A1 (fr) * 2017-11-02 2019-05-03 Bernier Developpement Dispositifs de securite pour installations aerauliques de froid et pompes a chaleur utilisant des fluides frigorigenes toxiques ou inflammables
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JP6016130B2 (ja) 2016-10-26
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KR20140064711A (ko) 2014-05-28
JPWO2013038599A1 (ja) 2015-03-23

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