CN102954614A - Outdoor unit and air-conditioning apparatus - Google Patents

Outdoor unit and air-conditioning apparatus Download PDF

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Publication number
CN102954614A
CN102954614A CN2012102953120A CN201210295312A CN102954614A CN 102954614 A CN102954614 A CN 102954614A CN 2012102953120 A CN2012102953120 A CN 2012102953120A CN 201210295312 A CN201210295312 A CN 201210295312A CN 102954614 A CN102954614 A CN 102954614A
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China
Prior art keywords
mentioned
cold
producing medium
premises station
valve
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Granted
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CN2012102953120A
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Chinese (zh)
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CN102954614B (en
Inventor
铃木康巨
久保和也
牧野浩招
天野胜之
松永直也
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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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
    • 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
    • F25B13/00—Compression machines, plants or systems, with 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2519—On-off valves
    • 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

Abstract

The present invention provides an air-conditioning apparatus securing the connection flexibility between the outdoor unit and the indoor unit and, at the same time, preventing an inflammable refrigerant flowing into an indoor unit not sufficiently fireproof. The air-conditioning apparatus 100 of the present invention is an air-conditioning apparatus 100 comprising an outdoor unit 1 having a compressor 5 for compressing a refrigerant and a heat source side heat exchanger 8 for exchanging heat between the refrigerant and an outdoor air and an indoor unit 2 having a load side heat exchanger 13 for exchanging heat between the refrigerant and an indoor air, in which the outdoor unit 1 comprises a first valve 51 provided in a gas pipe 3 to be connected with the indoor unit 2 and closed when shipped and a second valve 71 provided in a liquid pipe 4 to be connected with the indoor unit 2 and closed when shipped, the outdoor unit 1 is filled with the refrigerant when shipped, the outdoor unit 1 has a first information concerning flammability of refrigerants that can be used for the outdoor unit 1, and the indoor unit has a second information concerning flammability of refrigerants that can be used for the indoor unit.

Description

Off-premises station and aircondition
Technical field
The present invention relates to guarantee the security of the combustible refrigerant of aircondition.
Background technology
Before, the gas that can damage the ozone layer or cause global warming in the atmosphere of being released to as HCFC, HFC is used to the equipment of the use heat pump cycle of aircondition etc. as cold-producing medium.But, because HCFC, HFC cold-producing medium are high to load and the greenhouse effects of the earth coefficient of environment, so, in recent years, wish to use instead the natural refrigerants (HC) such as butane, propane such, depletion of the ozone layer coefficient and the low cold-producing medium of greenhouse effects of the earth coefficient.In addition, even the HFC cold-producing medium also wishes to adopt the such greenhouse effects of the earth coefficient of R32 close to the cold-producing medium of natural refrigerant.But, different from the desired specification of equipment before owing to natural refrigerant, R32 have the characteristic of flammable or little combustion etc., so, must be noted that during use.Especially, combustible refrigerant being flowed into do not arrange off-premises station, the indoor set of anti-explosion mechanism etc., is not preferred from secure context.
In aircondition before, during starting, communication by equipment room, the cold-producing medium kind that relatively is recorded in the mutual memory confirms whether the corresponding cold-producing medium kind of off-premises station is identical with the corresponding cold-producing medium kind of indoor set, not not simultaneously, stop and reporting (for example referring to patent documentation 1).
In addition, also exist as lower device: according to operating condition, judge the cold-producing medium kind, when the cold-producing medium kind of judgement is when being not suitable for the cold-producing medium kind of freeze cycle, shuts down and report (for example referring to patent documentation 2).
Patent documentation 1: Japanese kokai publication hei 10-038354 communique (the 3rd page, the 4th page, Figure 12)
Patent documentation 2: Japanese kokai publication hei 08-254363 communique (the 3rd page)
Summary of the invention
But, there is following problem etc. in above-mentioned aircondition before: off-premises station and indoor set require the cold-producing medium kind in full accord, even and in fact different types of cold-producing medium, desired specification of equipment also has interchangeability sometimes, therefore, even can not connect in this case, so the connection free degree of equipment is restricted.Especially, to the indoor set of abundant fireproofing installation there being, also existing the problem that combustible refrigerant is flowed into.
The present invention makes in order to address the above problem, its objective is provides a kind of aircondition, can guarantee that off-premises station is connected the free degree of connection with indoor set, and improve the security to combustible refrigerant, especially, can prevent the indoor set that combustible refrigerant flows into does not have abundant fireproofing installation.
Aircondition of the present invention is made of off-premises station and indoor set; Above-mentioned off-premises station has the compressor of compressed refrigerant and makes above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange; Above-mentioned indoor set has makes above-mentioned cold-producing medium and room air carry out the load side heat exchanger of heat exchange; It is characterized in that above-mentioned off-premises station has the first valve and second valve; The first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned off-premises station is enclosed above-mentioned cold-producing medium when dispatching from the factory; Above-mentioned off-premises station has the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function; Above-mentioned indoor set has the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function.
In addition, aircondition of the present invention is made of off-premises station and Duo Tai indoor set; Above-mentioned off-premises station has the compressor of compressed refrigerant and makes above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange; Above-mentioned many indoor sets have makes room air and above-mentioned cold-producing medium carry out the load side heat exchanger of heat exchange; It is characterized in that above-mentioned off-premises station has the first valve and second valve; The first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned off-premises station is enclosed above-mentioned cold-producing medium when dispatching from the factory; Above-mentioned off-premises station has the first storage part, is storing the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function in this first storage part; Above-mentioned each indoor set has the second storage part, is storing the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function in this second storage part; Above-mentioned aircondition has control part, the more above-mentioned first information and above-mentioned the second information, during than above-mentioned arbitrary the more incendive cold-producing medium of cold-producing medium that can use that manys in the indoor set when being judged as cold-producing medium that above-mentioned outdoor function uses, the control of not opening above-mentioned the first valve and above-mentioned second valve.
In addition, aircondition of the present invention is made of many off-premises stations and Duo Tai indoor set; Above-mentioned many off-premises stations have the compressor of compressed refrigerant and make above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange; Above-mentioned many indoor sets have makes above-mentioned cold-producing medium and room air carry out the load side heat exchanger of heat exchange; It is characterized in that above-mentioned off-premises station has the first valve and second valve; The first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned off-premises station is enclosed above-mentioned cold-producing medium when dispatching from the factory; Above-mentioned each off-premises station has the first storage part, is storing the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function in this first storage part; Above-mentioned each indoor set has the second storage part, is storing the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function in this second storage part; Above-mentioned aircondition has control part, the more above-mentioned first information and above-mentioned the second information, the most incendive cold-producing medium is during than above-mentioned arbitrary the more incendive cold-producing medium of cold-producing medium that can use that manys in the indoor set among being judged as the cold-producing medium that above-mentioned many outdoor functions use, the control of not opening above-mentioned the first valve and above-mentioned second valve.
In addition, aircondition of the present invention is made of off-premises station, many indoor sets and feeder pillar; Above-mentioned off-premises station has the compressor of compressed refrigerant and makes above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange; Above-mentioned many indoor sets have makes room air and above-mentioned cold-producing medium carry out the load side heat exchanger of heat exchange; After above-mentioned feeder pillar handle and the pipe arrangement branch that above-mentioned off-premises station is being connected, be connected to above-mentioned many indoor sets; It is characterized in that above-mentioned feeder pillar has the first valve and second valve; The first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned off-premises station is enclosed above-mentioned cold-producing medium when dispatching from the factory; Above-mentioned off-premises station has the first storage part, is storing the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function in this first storage part; Above-mentioned each indoor set has the second storage part, is storing the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function in this second storage part; Above-mentioned aircondition has control part, the more above-mentioned first information and above-mentioned the second information, during than above-mentioned arbitrary the more incendive cold-producing medium of cold-producing medium that can use that manys in the indoor set when being judged as cold-producing medium that above-mentioned outdoor function uses, the control of not opening above-mentioned the first valve and above-mentioned second valve.
In addition, the off-premises station of aircondition of the present invention has the compressor of compressed refrigerant and makes above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange, and, be connected with indoor set, this indoor set has makes above-mentioned cold-producing medium and room air carry out the load side heat exchanger of heat exchange; It is characterized in that above-mentioned off-premises station has the first valve and second valve; The first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned cold-producing medium is enclosed when dispatching from the factory; Above-mentioned off-premises station has the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function.
According to aircondition of the present invention, off-premises station, above-mentioned off-premises station has the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function, above-mentioned indoor set has the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function, so, by this first information and the second information are compared, can prevent the indoor set that combustible refrigerant flows into does not have fire prevention measure, in addition, when indoor set has fireproofing installation, also can guarantee the free degree that is connected with off-premises station.
Description of drawings
Fig. 1 is the pie graph of the aircondition 100 of embodiment of the present invention 1.
Fig. 2 is other table of flammability level of the cold-producing medium of expression embodiment of the present invention 1.
Fig. 3 is the interior information of indoor set that is stored in embodiment of the present invention 1.
Fig. 4 is the pie graph of the aircondition 200 of embodiment of the present invention 2.
Fig. 5 is the pie graph of another aircondition 300 of embodiment of the present invention 2.
Fig. 6 is the pie graph of another aircondition 400 of embodiment of the present invention 2.
Fig. 7 is the pie graph of another aircondition 500 of embodiment of the present invention 2.
Fig. 8 is the pie graph of off-premises station 1 of the aircondition of embodiment of the present invention 3.
Fig. 9 is the information that is stored in the indoor set 2 of embodiment of the present invention 4.
The explanation of Reference numeral
100,200,300,400,500 ... aircondition, 1 ... off-premises station, 2 ... indoor set, 3 ... flue, 4 ... liquid line, 5 ... compressor, 6 ... cross valve, 7 ... expansion valve, 8 ... the heat source side heat exchanger, 9 ... outdoor draft fan, 10 ... the control substrate, 11 ... storage part, 12 ... display part, 13 ... the load side heat exchanger, 14 ... indoor blower, 15 ... the control substrate, 16 ... storage part, 17 ... display part, 18 ... order wire between device, 19 ... remote controller, 21 ... original indoor set, 22 ... the control substrate, 30 ... feeder pillar, 31 ... the control substrate, 32 ... storage part, 33 ... display part, 51 ... the first valve, 71 ... second valve, 81 ... the refrigrant leakage sensor
The specific embodiment
Embodiment 1
Fig. 1 is the pie graph of the aircondition 100 of embodiment of the present invention 1.In present embodiment 1, the off-premises station 1 of the aircondition 100 that adopts as the straight-expansion type air conditioner system and the structure of indoor set 2 are described.
Among Fig. 1, aircondition 100, its off-premises station 1 are connected liquid line 4 connections that the flue 3 that flowed by gas refrigerant is connected with liquid refrigerant with indoor set, and cold-producing medium circulates in off-premises station 1, indoor set 2, flue 3 and liquid line 4 and formed heat pump cycle.
Off-premises station 1 is the heat power supply device in the heat pump cycle, and indoor set 2 is load devices.That is, usually, indoor set 2 is arranged in the space as the air-conditioning object, and off-premises station 1 is arranged on the outside in the space of carrying out its air conditioning.
Be provided with compressor 5, cross valve 6, expansion valve 7, heat source side heat exchanger 8, the first valve 51, second valve 71, outdoor draft fan 9 and control substrate 10 at off-premises station 1.Compressor 5 will be discharged behind the refrigerant compression.Cross valve 6 switches from the flow direction of the cold-producing medium of compressor 5 discharges according to heating running and cooling operation.Expansion valve 7 will return via liquid line 4 the cold-producing medium decompression of indoor set 2.Be inflated valve 7 post-decompression cold-producing mediums and flow into heat source side heat exchanger 8.The first valve 51 is located between the connecting portion of cross valve 6 and flue 3.Second valve 71 is located between the connecting portion of expansion valve 7 and liquid line 4.Outdoor draft fan 9 thermotropism source heat exchangers 8 conveying chamber outer air.Control substrate 10 is as control part, the running of the actuator that control compressor 5, cross valve 6, expansion valve 7, outdoor draft fan 9, the first valve 51, second valve 71 are such.Be provided with storage part 11 and display part 12 at control substrate 10.Storing the various information relevant with the running of aircondition 100 at storage part 11.Unusual etc. when display part 12 shows running.Display part 12 has LED, and user or maintenance person can according to bright light color, bright light place or the bright light number etc. of this LED, be judged the unusual kind that produces in the aircondition 100.
Be provided with load side heat exchanger 13, indoor blower 14 and control substrate 15 at indoor set 2.Flow through next cold-producing medium offered load side heat exchanger 13 via flue 3 from cross valve 6.Indoor blower 14 is carried room air to load side heat exchanger 13.Control substrate 15 is controlled the running of indoor blower 14 as control part.Be provided with storage part 16 at control substrate 15.Storing the various information relevant with the running of aircondition 100 at storage part 16.Be provided with display part 17 at control substrate 15, display part 17 has liquid crystal panel, can show the design temperature, indoor temperature, indoor humidity in when running or unusual etc.In addition, display part 17 can similarly constitute with the display part 12 of off-premises station 1, has LED, and user or maintenance person can according to bright light color, bright light place or the bright light number etc. of this LED, be judged the unusual kind that produces in the aircondition 100.
The control substrate 15 that the control substrate 10 of off-premises station 1 is connected with indoor set is connected by order wire between device 18, can carry out data communication each other.
The indoor of indoor set 2 is being set, is being provided with the remote controller 19 of communicating by letter with the control substrate 15 of indoor set 2.The user with remote controller 19 set cooling operations, heat running, the operation information of indoor design temperature etc.In addition, remote controller 19 has liquid crystal panel, can show the design temperature, indoor temperature, indoor humidity in when running or unusual etc.
The operation information of setting with remote controller 19 is output to the control substrate 15 of indoor set 2, also outputs to the control substrate 10 of off-premises station 1 via order wire 18 between device from control substrate 15.In addition, between control substrate 10 and the control substrate 15, remote controller 19 with control between the substrate 15, can be wire communication, also can be radio communication.
Off-premises station 1 has a plurality of temperature sensors (not shown) and a plurality of pressure sensor (not shown).The control substrate 10 of off-premises station 1 reads from the data of these sensor outputs.The data that read of control substrate 10, the force value of the pressure of the temperature of the condensation temperature of the cold-producing medium during such as the temperature that outdoor air is arranged, evaporating temperature, the cooling operation of cold-producing medium when heating running, the cold-producing medium of discharging from compressor 5 or the cold-producing medium of discharging from compressor 5 and the cold-producing medium that sucked by compressor 5 etc.In addition, the control substrate 10 of off-premises station 1 can read the sensor that is read by the control substrate 15 of indoor set 2 by order wire 18 between device and detect data, order wire 18 reads the operation information of being set by remote controller 19 between control substrate 15 that in addition, can also be by indoor set 2 and device.The control substrate 10 of off-premises station 1, according to the data of the operation information that reads, indoor air temperature and outside air temperature etc., the actuator in the aperture of the rotary speed of control compressor 5, the switching of cross valve 6, expansion valve 7, the off-premises stations such as rotary speed 1 of outdoor draft fan 9.
Indoor set 2 has a plurality of temperature sensors (not shown) and one or more refrigrant leakage sensor 81, the control substrate 15 of indoor set 2 reads from the data of these sensor outputs, as mentioned above, the control substrate 10 of off-premises station 1 reads these data by order wire 18 between device.The condensation temperature of the evaporating temperature of the cold-producing medium when these data such as the temperature that indoor air is arranged, cooling operation, the cold-producing medium when heating running or the information whether indoor set 2 inner refrigerants leak etc.
Below, with reference to the formation of Fig. 1, the flowing of the cold-producing medium when aircondition 100 running is described.The control substrate 10 of aircondition 100 by off-premises station 1 switches cross valves 6 and can switch and heat running and cooling operation.In addition, in the common running of aircondition 100, the first valve 51 and second valve 71 standard-sized sheets.
Flowing of cold-producing medium when at first explanation heats running.Heat when running, the gas refrigerant of the HTHP of discharging from the compressor 5 that is located at off-premises station 1 inside flows into cross valve 6, flows to indoor set 2 from cross valve 6 by flue 3.Flow to the cold-producing medium of indoor set 2 from cross valve 6, the room air of carrying in load side heat exchanger 13 and the indoor blower 14 of indoor set 2 carries out heat exchange and dispels the heat, and becomes the liquid refrigerant of the supercooling state of cryogenic high pressure.Then, the liquid refrigerant of cryogenic high pressure flows to off-premises station 1 from indoor set 2 by liquid line 4.The cold-producing medium that flows to the cryogenic high pressure of off-premises station 1 from indoor set 2 is inflated valve 7 decompressions, becomes the gas-liquid two-phase state of low-temp low-pressure, flows into heat source side heat exchanger 8.The outdoor air that the cold-producing medium of low-temp low-pressure and outdoor draft fan 9 are carried carries out heat exchange, becomes the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5 via cross valve 6 from heat source side heat exchanger 8.
Flowing of cold-producing medium when then cooling operation being described.During cooling operation, the gas refrigerant of the HTHP of discharging from compressor 5 flows to heat source side heat exchanger 8 by cross valve 6.The gas refrigerant of HTHP, gas carries out heat exchange outside the outdoor air that heat source side heat exchanger 8 and outdoor draft fan 9 are carried is, becomes the liquid refrigerant of the supercooling state of cryogenic high pressure, flows to expansion valve 7.At expansion valve 7, the liquid refrigerant of cryogenic high pressure is depressurized, and becomes the gas-liquid two-phase state of low-temp low-pressure.Then, the gas-liquid two-phase cold-producing medium of low-temp low-pressure flows to indoor set 2 from off-premises station 1 by liquid line 4.Flow to the gas-liquid two-phase cold-producing medium of indoor set 2 from off-premises station 1, the room air of carrying in the load side heat exchanger 13 that is located at indoor set 2 and indoor blower 14 carries out heat exchange, becomes the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state flows to off-premises station 1 from indoor set 2 by flue 3, is sucked by compressor 5 via cross valve 6.
Above, the basic comprising of the aircondition 100 of present embodiment 1 has been described, below, control substrate 10 and the control substrate 15 of indoor set 2, the storage part 11 of control substrate 10 and storage part 16 and the first valve 51 and the second valve 71 of control substrate 15 as the off-premises station 1 of the inscape of feature of the present invention are described.
In the storage part 11 on being located at the control substrate 10 of off-premises station 1, storing flame resistance rank CfS, the flammability rank of the cold-producing medium that this flame resistance rank CfS can use according to off-premises station 1 determines.Similarly, in the storage part 16 on being located at the control substrate 15 of indoor set 2, storing flame resistance rank CfL, the flammability rank of the cold-producing medium that this flame resistance rank CfL can use according to indoor set 2 determines.
The flame resistance rank CfS of off-premises station 1 and the flame resistance rank CfL of indoor set 2 are described.The flammability rank of the cold-producing medium that the cold-producing medium that the flame resistance rank can be used according to this equipment or imagination are used determines.
The flammability rank of cold-producing medium at first is described.The flammability rank of cold-producing medium can be decided by burning least concentration (LFL), burning velocity, the combustion heat under certain condition, and for example Fig. 2 defines like that.The LFL that puts down in writing among Fig. 2 is the concentration (vol%) that gas shape cold-producing medium takes fire in air, and burning velocity is the speed (m/sec) that the cold-producing medium burning spreads, the heat (kJ/kg) that the combustion heat produces when being the cold-producing medium burning.
According to other definition of flammability level of cold-producing medium shown in Figure 2, cold-producing medium is classified.
In 60 ℃ of 1 atmospheric air, even light, the cold-producing medium that burning is not also propagated is classified as 1 grade of flammability rank.
Satisfying LFL is the cold-producing medium of such three conditions of the not enough 19000kJ/kg of the combustion heat below the 0.1m/sec, under 25 ℃ of 1 atmospheric conditions greater than 3.5%, in burning velocity under 23 ℃ of 1 atmospheric conditions, is classified as 2 grades of flammability ranks.
Satisfy the cold-producing medium in combustion propagation under 60 ℃ of 1 atmospheric conditions, LFL such three conditions of the not enough 19000kJ/kg of the combustion heat greater than 3.5%, under 25 ℃ of 1 atmospheric conditions, be classified as 3 grades of flammability ranks.
Satisfy at combustion propagation under 60 ℃ of 1 atmospheric conditions, LFL be below 3.5%, the combustion heat is the cold-producing medium of such three conditions more than the 19000kJ/kg under 25 ℃ of 1 atmospheric conditions, is classified as 4 grades of flammability ranks.
Like this, the flammability rank is that 1 grade cold-producing medium is non-flame properties, and the flammability rank is that the cold-producing medium more than 2 grades is flammable.That is, the cold-producing medium that the flammability rank is larger can be described as and more holds incendive cold-producing medium.In addition, in the combustible refrigerant, be that 2 grades cold-producing medium is called little combustion cold-producing medium with the flammability rank.
According to above-mentioned classification, R134a, R410A, carbon dioxide coolant can be categorized into 1 grade of flammability rank, R32, R717(ammonia) can be categorized into 2 grades of flammability ranks, R152a can be categorized into 3 grades of flammability ranks, R170(ethane), R290(propane), the R600a(iso-butane) cold-producing medium can be categorized into 4 grades of flammability ranks.Such other division of flammability level is the international norm according to ISO 817, in addition, also can carry out same partition of the level according to ASHRAE 34.But other classification of flammability level of the cold-producing medium among the present invention is not limited to the classification of classification, ISO 817 and the ASHRAE 34 of Fig. 2.
Flame resistance rank CfS is 1 grade off-premises station 1, the indoor set 2 that flame resistance rank CfL is 1 grade, usually, and not for the measure of the double wall that improves the heat exchanger that the security of refrigrant leakage is taked, explosion-proofization of electronic equipment etc.When to use the flammability rank in these off-premises stations 1, indoor set 2 be combustible refrigerant more than 2 grades, cold-producing medium was in case leak, and electric terminal just has the possibility of catching fire.Therefore, do not wish to flame resistance rank CfS, CfL to be that to use the flammability rank be cold-producing medium more than 2 grades for 1 grade equipment.On the contrary, take off-premises station 1, the indoor set 2 that uses the flammability rank to make as prerequisite as the cold-producing medium more than 2 grades, because to the leakage of cold-producing medium, catch fire and taked to improve the measure of security, so, in these devices, even use flammability rank is the cold-producing medium below 2 grades, also can guarantee security.
In addition, about cold-producing medium whether this problem of possibility of catching fire is arranged in off-premises station 1, indoor set 2 inside, leaked as prerequisite take cold-producing medium, manufacturing and designing the stage, when cold-producing medium as object being full of under the state of framework inside of each unit each equipment is turned round usually, investigating in advance this cold-producing medium and whether catch fire.
For example, take set do not use the flammability rank as the cold-producing medium more than 2 grades only uses the noninflammability cold-producing medium be the flammability rank as 1 grade cold-producing medium be 1 grade as the flame resistance rank CfS of the off-premises station 1 of prerequisite manufacturing, it is 1 grade information that the storage part 11 of off-premises station 1 is recording flame resistance rank CfS.Similarly, take set do not use the flammability rank as the combustible refrigerant more than 2 grades only uses the noninflammability cold-producing medium be rank as 1 grade cold-producing medium also be 1 grade as the flame resistance rank CfL of the indoor set 2 of prerequisite manufacturing, it is 1 grade information that the storage part 16 of indoor set 2 is recording flame resistance rank CfL.
As other example, can use the flammability rank is that 4 grades natural refrigerant is R290(propane), the R600a(iso-butane) the flame resistance rank CfS of off-premises station 1 be 4 grades, similarly, can use the flammability rank is that the flame resistance rank CfL of indoor set 2 of 4 grades cold-producing medium also is 4 grades, it is 4 grades information that storage part 11 is recording flame resistance rank CfS, and it is 4 grades information that storage part 16 is recording flame resistance rank CfL.
Fig. 3 represents to be stored in the information in the storage part 16.For example, if indoor set 2 can use R410A, R32, R290, R717, then in the storage part 16 interior kind of the cold-producing medium that can use, the flammability ranks of this cold-producing medium of storing.In the situation of Fig. 3, the flammability rank that is recording R410A is that 1 grade, the flammability rank of R32 are 2 grades, R290(propane) the flammability rank be 4 grades, R717(ammonia) the flammability rank be 2 grades information.Maximum among the flammability rank of the cold-producing medium that can use is as the flame resistance rank CfL of indoor set 2.That is, in the situation of Fig. 3, the flammability rank of R290 is as the flame resistance rank CfL=4 level of indoor set 2.
The above has illustrated at interior kind, the flammability rank of this cold-producing medium, the flame resistance rank CfL that is storing the cold-producing medium that indoor set 2 can use of storage part 16.But, namely enable the kind of the cold-producing medium that uses, the flammability rank of this cold-producing medium is not stored in the storage part 16, and is only that the flame resistance rank CfL of indoor set 2 is pre-stored in storage part 16 in manufacturing process, can implement the present invention yet.
Canned data too in the storage part 11 of off-premises station 1.
In recent years, HF hydrocarbon series coolant (HFO1234yf), R32(difluoromethane), R290(propane) etc. cold-producing medium, because of low the coming into one's own of its greenhouse effects of the earth coefficient ratio R410A.But these cold-producing mediums have little combustion or combustibility, and in above-mentioned classification, the flammability rank is more than 2 grades.
Think that the heat pump assembly that can use from now on these cold-producing mediums will be developed, but at that time, might carry out the construction that is connected with off-premises station corresponding to combustible refrigerant not corresponding to the indoor set of combustible refrigerant by mistake.
Usually, cold-producing medium dispatches from the factory with the state of being enclosed off-premises station in factory, so the flame resistance rank CfS of off-premises station is consistent with the flammability rank of the cold-producing medium of being enclosed.Therefore, when off-premises station or indoor set being changed the equipment that becomes corresponding to combustible refrigerant, the flame resistance rank CfL of indoor set has problem aspect security.At the flame resistance rank CfL of the indoor set that is being connected with the off-premises station of having enclosed combustible refrigerant than the flammability rank that is enclosed in the cold-producing medium in the off-premises station hour, namely,, must take some countermeasures than the flame resistance rank of off-premises station CfS hour at the flame resistance rank CfL of indoor set.
Especially, R32, compare with the R410A as one of HFC cold-producing medium, the physical property of its boiling point, vapour pressure etc. is close, so, suppose to use the flammability rank in 1 grade indoor set, to use as 1 grade off-premises station, flame resistance rank CfL as the flame resistance rank CfS of prerequisite as 1 grade HFC cold-producing medium.
The aircondition 100 of present embodiment 1 is used for control by the information that will be recorded in storage part 11 and the storage part 16, can seek its countermeasure.Especially, when the construction work in place is set, out-of-spec off-premises station is connected with indoor set, can prevents that combustible refrigerant from flowing into to suppose the indoor set that does not use combustible refrigerant and make from off-premises station.
Below, control substrate 10, the control substrate 15 of indoor set 2 and the action of the first valve 51 and second valve 71 of the off-premises station 1 in the installing engineering of the off-premises station 1 of present embodiment 1 and indoor set 2 are described.
At first, the constructor connects the control substrate 10 of off-premises station 1 and the control substrate 15 of indoor set 2 with order wire between device 18, makes control substrate 10 become the state that can communicate by letter with control substrate 15, and off-premises station 1 and indoor set 2 are connected in flue 3 and liquid line 4.In this stage, the first valve 51 and second valve 71 or closed condition, the cold-producing medium of being enclosed in the off-premises station 1 does not also flow to indoor set 2.In addition, for fear of being opened because of carelessness by the constructor, wish that the first valve 51 and second valve 71 are DYN dynamic valves, rather than the valve of hand.
Then, under the state that order wire 18 is connecting between control substrate 15 that the control substrate 10 of off-premises station 1 is connected with indoor set is by device during supply power, automatically communicate between the control substrate 10 of off-premises station 1 and the control substrate 15 of indoor set 2, the control substrate 15 of 10 pairs of indoor sets 2 of control substrate of off-premises station 1 signal of giving an order, order control substrate 15 its corresponding flame resistance rank CfL of report.The control substrate 15 that receives the indoor set 2 of this order circulates a notice of be stored in flame resistance rank CfL in the storage part 16 of control substrate 10 to off-premises station 1.The control substrate 10 that receives the off-premises station 1 of circular compares the flame resistance rank CfS and the flame resistance rank CfL that are stored in the storage part 11.
As flame resistance rank CfL ≠ flame resistance rank CfS, during flame resistance rank CfL＜flame resistance rank CfS, namely, when more holding incendive cold-producing medium than the cold-producing medium that indoor set 2 can use when the control substrate 10 of off-premises station 1 is judged as the cold-producing medium that off-premises station 1 can use, control substrate 10 is forbidden compressor 5, outdoor draft fan 9, the running of the equipment that indoor blower 14 is such, with expansion valve 7, the first valve 51 and second valve 71 such valves remain full cut-off and do not open, at the display part 12 of off-premises station 1, the display part 17 of indoor set 2, at least one position of remote controller 19 shows unusual.Not corresponding with the combustible refrigerant content of unusual expression indoor set 2 that shows.At this moment, can not want second valve 71 yet, and replace with expansion valve 7.
When flame resistance rank CfL 〉=flame resistance rank CfS, namely, it is that the cold-producing medium that can use with off-premises station 1 is when holding incendive cold-producing medium on an equal basis or more that the control substrate 10 of off-premises station 1 is judged as cold-producing medium that indoor set 2 can use, control substrate 10 is with the first valve 51 and second valve 71 standard-sized sheets, the running of permitted device, the driving of actuator.At this moment, do not carry out abnormal show.
Flame resistance rank CfL＜flame resistance rank CfS is flame resistance rank CfL ≠ flame resistance rank CfS, has comprised flame resistance rank CfL=flame resistance rank CfS among flame resistance rank CfL 〉=flame resistance rank CfS.
As mentioned above, when indoor set 2 corresponding flame resistance rank CfL are lower than off-premises station 1 corresponding flame resistance rank CfS, forbid turning round, forbidding that the opening of valve and demonstration are unusual, so, when even indoor set 2 is connected by mistake, also can guarantee the security of indoor.
Usually, in factory, for the cold-producing medium that is filled in the off-premises station is sealed, off-premises station 1 and connecting portion flue 3 and consisted of by the such hand-operated valve (not shown) of ball valve or stop valve with the connecting portion of liquid line 4, according to sequence of construction, before the electrical engineering of order wire 18, power line (not shown) between device, connect flue 3 and liquid line 4 rear to indoor set 2, flue 3 and liquid line 4 vacuumize, with ball valve or the so open plumber's journey of hand-operated valve of stop valve.At this moment, before the judgement that the running of the supply of power supply, equipment is permitted/forbidden, although cold-producing medium is open to the indoor pusher side that is arranged on the living space, but, in aircondition 100 of the present invention, the opening because the first valve 51 and second valve 71 are under an embargo, so, regardless of sequence of construction, combustible refrigerant is namely not open as the space side of air-conditioning object to room space.
In addition, DYN dynamic by the first valve 51, second valve 71 are constituted, according to the relatively judgement of the flame resistance rank CfL of the flame resistance rank CfS of the off-premises station in the control substrate 10 of off-premises station 1 and indoor set, but the also opening of autocontrol valve.
Like this, owing to be the opening of the above time license running of off-premises station 1 corresponding flammability rank CfS, valve at indoor set 2 corresponding flammability rank CfL, so, can in the situation that can guarantee security, make the combination of off-premises station 1 and indoor set 2 have the free degree.Therefore, can be so that the specification change of the indoor set 2 that changes with the change of using cold-producing medium be minimum, can reduce aircondition development cost, shorten delivery date, saving resource, energy-conservation.
In addition, in present embodiment 1, be to give an order to order its report flame resistance rank from 1 pair of indoor set 2 of off-premises station.But, also can be conversely, give an order from 2 pairs of off-premises stations 1 of indoor set, judged the magnitude relationship of flame resistance rank CfL and flame resistance rank CfS by the control substrate 15 of indoor set 2, when flame resistance rank CfL＜flame resistance rank CfS, give an order from 2 pairs of off-premises stations 1 of indoor set, with the running of forbidding off-premises station 1, the opening of valve.In addition, also can give an order from 19 pairs of off-premises stations 1 of remote controller, indoor set 2, by remote controller 19 judge the magnitude relationship of flame resistance rank CfL and flame resistance rank CfS, judgement permit/forbid turn round, the opening of valve.
In addition, the aircondition 100 of present embodiment 1, the information whether cold-producing medium that the refrigrant leakage sensor 81 of indoor set 2 is detected leaks uses in the control, like this, in most cases, when refrigrant leakage to room space during namely as the space side of air-conditioning object, automatically with the first valve 51 and second valve 71 full cut-offs, perhaps refrigerant-recovery is arrived off-premises station 1 side, thereby can suppress more to leak to the space side as the air-conditioning object.
The following describes this action.When the refrigrant leakage sensor 81 of indoor set 2 detected refrigrant leakage, the control substrate 15 of indoor set 2 read the refrigrant leakage information of refrigrant leakage sensor 81, and the control substrate 10 of off-premises station 1 reads this information by order wire 18 between device.Off-premises station 1 is according to the instruction from control substrate 10, with the first valve 51 and second valve 71 full cut-offs.Perhaps, off-premises station 1 is according to the instruction from control substrate 10, cross valve 6 is switched to the cooling operation position, with second valve 71 and expansion valve 7 full cut-offs and with the first valve 51 standard-sized sheets, make compressor 5 and outdoor draft fan 9 runnings, pass through the predefined duration of runs or reaching approximately the automatic decision of the suction pressure value of atmospheric pressure etc. by the force value of the cold-producing medium that sucked by compressor 5, with the first valve 51 full cut-offs, compressor 5 and outdoor draft fan 9 are stopped, with in the pipe arrangement of refrigerant-recovery in the off-premises station 1, the heat source side heat exchanger 8 and sealed.Like this, can suppress toward more leaking as the space side of air-conditioning object.
As mentioned above, under most situations, at refrigrant leakage to room space during namely as the space side of air-conditioning object, automatically with refrigerant-recovery to off-premises station 1 side, suppress more to leak to the space side as the air-conditioning object, can guarantee the security of indoor.
Embodiment 2
In embodiment 1, the aircondition that 1 off-premises station is being connected 1 indoor set has been described.In present embodiment 2, aircondition 200 that 1 off-premises station is being connected many indoor sets and the aircondition 300 that is connected many off-premises stations and is connecting many indoor sets are described.In present embodiment 2, the component part identical with embodiment 1 to be annotated with identical mark, its explanation is omitted.
Fig. 4 represents the aircondition 200 of present embodiment 2.In aircondition 200, off-premises station 13 indoor set 2A, 2B, 2C have been connected.Indoor set 2A, 2B, 2C are connected in parallel with respect to flue 3 and liquid line 4.Indoor set 2A, 2B, 2C have expansion valve 7A, 7B, 7C between liquid line 4 and load side heat exchanger 13A, 13B, 13C.Indoor set 2A, 2B, 2C have respectively control substrate 15A, 15B, 15C, and control substrate 15 is connected with the control substrate 10 of off-premises station 1 by order wire 18 between device.Control substrate 15A, 15B, 15C are connected with remote controller 19A, 19B, 19C respectively.The user operates each remote controller 19A, 19B, 19C, sets the operation information of indoor set 2A, 2B, 2C.Control substrate 15A, 15B, 15C are according to the operation information control expansion valve 7A that sets separately, the aperture of 7B, 7C, and adjustable throttle enters the flow of the cold-producing medium of load side heat exchanger 13A, 13B, 13C.In addition, because expansion valve 7A, 7B, 7C are arranged at indoor set 2A, 2B, 2C, so, expansion valve is not set in the off-premises station 1, other structure of off-premises station 1 is identical with embodiment 1.
In addition, be respectively equipped with refrigrant leakage sensor 81A, 81B, 81C at indoor set 2A, 2B, 2C.When among indoor set 2A, 2B, the 2C any had refrigrant leakage, these sensors detected the leakage of cold-producing medium, and testing result is outputed to control substrate 15A, 15B, 15C.
In addition, control substrate 15A, 15B, 15C, with embodiment 1 similarly, have respectively storage part 16A, 16B, 16C and display part 17A, 17B, 17C.Storing respectively flame resistance rank CfLA, CfLB, the CfLC of indoor set 2A, 2B, 2C at storage part 16A, 16B, 16C.Control substrate 15A, control substrate 15B and be connected substrate 15C respectively via the order wire connection, can communicate by letter each other.
Below, the flowing of the cold-producing medium of the aircondition 200 that present embodiment 2 is described when heating running.The gas refrigerant of the HTHP of discharging from the compressor 5 of off-premises station 1 is via cross valve 6 inflow gas pipes 3.From flue 3 in parallel respectively offered load side heat exchanger 13A, 13B, 13C, the room air of carrying with indoor blower 14A, 14B, 14C carries out heat exchange and dispels the heat, and becomes the liquid refrigerant of the supercooling state of cryogenic high pressure.The liquid refrigerant that flows out from load side heat exchanger 13A, 13B, 13C is inflated respectively valve 7A, 7B, 7C decompression, becomes the gas-liquid two-phase state of low-temp low-pressure, flows into off-premises station 1 from liquid line 4.The outdoor air of carrying from two-phase system cryogen and the outdoor draft fan 9 of liquid line 4 inflow heat source side heat exchangers 8 carries out heat exchange, becomes the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5 via cross valve 6 from heat source side heat exchanger 8.
Above, the essential structure of the aircondition 200 of present embodiment 2 has been described.Below, illustrate as the storage part 11 of the control substrate 10 of control substrate 15A, 15B, 15C and the off-premises station 1 of the control substrate 10 of the off-premises station 1 of the inscape of feature of the present invention and indoor set 2A, 2B, 2C and control substrate 15A, storage part 16A, the 16B of 15B, 15C, 16C.
In embodiment 1, be that the flame resistance rank CfS of off-premises station 1 and the flame resistance rank CfL of indoor set 2 are compared.But, in embodiment 2, because many indoor sets are arranged, so, in present embodiment 2, illustrate the flame resistance rank CfS of off-premises station 1 and the flame resistance rank of which indoor set are compared.
In the aircondition 200 of present embodiment 2, the control substrate 10 of off-premises station 1 be connected with indoor set 2A control substrate 15A by device between under the state that connecting of order wire 18 during supply power, automatically communicate between the control substrate 15A of the control substrate 10 of off-premises station 1 and indoor set 2A, the control substrate 15A of 10 couples of indoor set 2A of control substrate of off-premises station 1 signal of giving an order is ordered the flame resistance rank CfL of its report indoor set.Receive the control substrate 15A of indoor set 2A of this order to remaining control substrate 15B and the control substrate 15C signal of giving an order, order them that separately flame resistance rank CfLB, flame resistance rank CfLC circulated a notice of to controlling substrate 15A.Receive the control substrate 15A of circular from control substrate 15B and control substrate 15C, minimum among flame resistance rank CfLA, CfLB, the CfLC, be least corresponding to the flame resistance rank of the indoor set of combustible refrigerant among indoor set 2A, 2B, the 2C, as flame resistance rank CfLmin, send to the control substrate 10 of off-premises station 1.
For example, when flame resistance rank CfLA=4 level, flame resistance rank CfLB=3 level, flame resistance rank CfLC=2 level, flame resistance rank CfLmin=2 level (=flame resistance rank CfLC).In addition, for example, when flame resistance rank CfLA=4 level, flame resistance rank CfLB=3 level, flame resistance rank CfLC=3 level, flame resistance rank CfLmin=3 level.
Control substrate 10 from the off-premises station 1 of the notified flame resistance rank of the control substrate 15A CfLmin of indoor set 2A compares the flame resistance rank CfS and the flame resistance rank CfLmin that are stored in the storage part 11.
When flame resistance rank CfLmin＜flame resistance rank CfS, namely, than indoor set 2A when the control substrate 10 of off-premises station 1 is judged as the cold-producing medium that off-premises station 1 can use, 2B, when the cold-producing medium that any among the 2C can be used more holds incendive cold-producing medium, control substrate 10 is forbidden compressor 5, outdoor draft fan 9, expansion valve 7, the running of the actuator that indoor blower 14 is such, display part 12 at off-premises station 1, indoor set 2A, 2B, the display part 17A of 2C, 17B, 17C, remote controller 19A, 19B, at least one position among the 19C shows unusual, with the first valve 51 of off-premises station 1 and second valve 71 full cut-offs and open.Shown unusual expression indoor set 2A, any not corresponding with the combustible refrigerant content among 2B, the 2C.
Then, when flame resistance rank CfLmin 〉=flame resistance rank CfS, namely, that the cold-producing medium that can use with off-premises station 1 is when holding incendive cold-producing medium on an equal basis or more when the control substrate 10 of off-premises station 1 is judged as cold-producing medium that whole indoor set 2A, 2B, 2C can use, the license running, do not carry out abnormal show, not full cut-off the first valve 51 and second valve 71 and it is open.
In addition, refrigrant leakage sensor 81A, the 81B of any in indoor set 2A, 2B, 2C, when 81C detects refrigrant leakage, off-premises station 1 is according to the instruction from control substrate 10, with the first valve 51 and second valve 71 full cut-offs.Perhaps, off-premises station 1 is according to the instruction from control substrate 10, cross valve 6 is switched to the cooling operation position, with second valve 71 full cut-offs, with expansion valve 7A, 7B, 7C and the first valve 51 standard-sized sheets, make compressor 5 and outdoor draft fan 9 runnings, pass through the predefined duration of runs or reaching approximately the automatic decision of the suction pressure value of atmospheric pressure etc. by the force value of the cold-producing medium that sucked by compressor 5, with the first valve 51 full cut-offs, compressor 5 and outdoor draft fan 9 are stopped, with the pipe arrangement of refrigerant-recovery in the off-premises station 1, also sealed in the heat source side heat exchanger 8.Like this, can suppress more to leak to the space side as the air-conditioning object.
As mentioned above, aircondition 200 according to present embodiment 2, even 1 off-premises station 1 is connected the structure of many indoor set 2A, 2B, 2C, since minimum among the flame resistance rank of indoor set 2A, 2B, 2C, namely least compare corresponding to the flame resistance rank CfLmin of the indoor set of combustible refrigerant and the flame resistance rank CfS of off-premises station 1, so, can improve the security to combustible refrigerant.In addition, under most situations, when refrigrant leakage to room space during namely as the space side of air-conditioning object, can be automatically refrigerant-recovery to off-premises station 1 side, suppress more to leak to the space side as the air-conditioning object, can guarantee the security of indoor.
Fig. 5 represents the aircondition 300 of the another way of present embodiment 2.The structure of aircondition 300 is described with reference to Fig. 5.In aircondition 300, the component part identical with aircondition 200 is marked with the same tag, its explanation is omitted.
In aircondition 300,2 off-premises station 1A 3 indoor set 2A, 2B, 2C have been connected with off-premises station 1B.Off-premises station 1A, 1B are connected the liquid line 4 that flue 3 that 2B, 2C flow through by gas refrigerant is connected with gas-liquid two-phase system refrigerant flow and are connected with indoor set 2A, when heating running, the gas refrigerant of the gas refrigerant of the HTHP of discharging from the compressor 5A of off-premises station 1A and the HTHP of discharging from the compressor 5B of off-premises station 1B is at flue 3 interflow, and the 2 phase cold-producing mediums that flow to liquid line 4 from indoor set 2A, 2B, 2C are diverted to off-premises station 1A and off-premises station 1B from liquid line 4.In addition, at the control substrate 10B of off-premises station 1B, with embodiment 1 similarly, have storage part 11B and display part 12B.Recording the flame resistance rank CfSB of off-premises station 1B at storage part 11B.In addition, in off-premises station 1A, 1B, and the connecting portion of flue 3 and cross valve 6A, 6B between have the first valve 51A, 51B; And the connecting portion of liquid line 4 and heat source side heat exchanger 8A, 8B between have second valve 71A, 71B.
Flowing of the cold-producing medium of aircondition 300 when heating running at first is described.The cold-producing medium of the HTHP of discharging from the compressor 5A of off-premises station 1A is via cross valve 6A inflow gas pipe 3.The cold-producing medium of the HTHP of similarly, discharging from the compressor 5B of off-premises station 1B is via cross valve 6B inflow gas pipe 3.From flue 3 in parallel respectively offered load side heat exchanger 13A, 13B, 13C, the room air of carrying with indoor blower 14A, 14B, 14C carries out heat exchange and dispels the heat, and becomes the liquid refrigerant of the supercooling state of cryogenic high pressure.The liquid refrigerant that flows out from load side heat exchanger 13A, 13B, 13C is inflated valve 7A, 7B, 7C decompression, becomes the gas-liquid two-phase state of low-temp low-pressure, flows into off-premises station 1A and off-premises station 1B from liquid line 4.
Flow into the outdoor air that the two-phase system cryogen of heat source side heat exchanger 8A and outdoor draft fan 9A carry from liquid line 4 and carry out heat exchange, become the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5A via cross valve 6A from heat source side heat exchanger 8A.Similarly, flow into the outdoor air that the two-phase system cryogen of heat source side heat exchanger 8B and outdoor draft fan 9B carry from liquid line 4 and carry out heat exchange, become the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5B via cross valve 6B from heat source side heat exchanger 8B.That is, same cold-producing medium circulates in off-premises station 1A, 1B and indoor set 2A, 2B, 2C.
Other comparison of flame resistance level of off-premises station and the indoor set of aircondition 300 is described.The control substrate 10A of off-premises station 1A be connected with off-premises station 1B that control substrate 10B connects and the control substrate 10A of off-premises station 1A be connected with indoor set 2A control substrate 15A by device between under the state that connecting of order wire 18 during supply power, automatically communicate between the control substrate 15A of the control substrate 10A of off-premises station 1A and indoor set 2A.With the aircondition 200 of Fig. 4 similarly, the control substrate 10A of off-premises station 1A orders the flame resistance rank CfL of its report indoor set to the control substrate 15A of the indoor set 2A signal of giving an order.Receive the control substrate 15A of indoor set 2A of this order to remaining control substrate 15B and the control substrate 15C signal of giving an order, order them that separately flame resistance rank CfLB, flame resistance rank CfLC circulated a notice of to controlling substrate 15A.Receive the control substrate 15A of circular from control substrate 15B and control substrate 15C, minimum among flame resistance rank CfLA, CfLB, the CfLC, be least corresponding to the flame resistance rank of the indoor set of combustible refrigerant among indoor set 2A, 2B, the 2C, as flame resistance rank CfLmin, send to the control substrate 10A of off-premises station 1A.
In addition, the control substrate 10A of off-premises station 1A simultaneously also to the control substrate 10B of the off-premises station 1B signal of giving an order, orders its report flame resistance rank CfSB.
The control substrate 10A of off-premises station 1A is to the control substrate 10B of the off-premises station 1B signal of giving an order, and orders its report to be recorded in flame resistance rank CfSB on the control substrate 10B of off-premises station 1B.Receive the control substrate 10B of the off-premises station 1B of this order, the flame resistance rank CfSB that is recorded in storage part 11B is circulated a notice of to control substrate 10A.By the control substrate 10A of circular flame resistance rank CfSB, compare being recorded in storage part 11A interior flame resistance rank CfSA and flame resistance rank CfSB, large flame resistance rank as flame resistance rank CfSmax.
Then, control substrate 10A compares the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfSmax.
When flame resistance rank CfLmin＜flame resistance rank CfSmax, namely, any cold-producing medium that can use that is judged as among off-premises station 1A, the 1B as the control substrate 10A of off-premises station 1A is when more holding incendive cold-producing medium than any cold-producing medium that can use among indoor set 2A, 2B, the 2C, control substrate 10A forbids the running of the actuator that compressor 5A, outdoor draft fan 9A, expansion valve 7A, indoor blower 14A, 14B, 14C are such, simultaneously, also send the instruction of the actuator running of forbidding off-premises station 1B to control substrate 10B.And the arbitrary at least position in display part 12A, 12B or display part 17A, 17B, 17C or remote controller 19A, 19B, 19C shows unusual, with the first valve 51A, the 51B of off-premises station 1A, 1B and second valve 71A, 71B full cut-off and open.Shown unusual expression indoor set 2A, any not corresponding with the combustible refrigerant content among 2B, the 2C.
When flame resistance rank CfLmin 〉=flame resistance rank CfSmax, namely, when the control substrate 10A of off-premises station 1A be judged as cold-producing medium that whole indoor set 2A, 2B, 2C can use be than off-premises station 1A, 1B in any cold-producing medium that can use when more holding incendive cold-producing medium, the license running, the first valve 51A, the 51B of full cut-off off-premises station 1A, 1B and second valve 71A, 71B and it is open do not carry out abnormal show.
In addition, any refrigrant leakage sensor 81A, 81B in indoor set 2A, 2B, 2C, when 81C detects refrigrant leakage, off-premises station 1A, 1B be according to the instruction from control substrate 10A, with the first valve 51A, 51B and second valve 71A, 71B full cut-off.Perhaps, off-premises station 1A, 1B is according to the instruction from control substrate 10A, with cross valve 6A, 6B switches to the cooling operation position, with second valve 71A, the 71B full cut-off, with expansion valve 7A, 7B, 7C and the first valve 51A, the 51B standard-sized sheet, make compressor 5A, 5B and outdoor draft fan 9A, the 9B running, passing through the predefined duration of runs or passing through by compressor 5A, the force value of the cold-producing medium that 5B sucks reaches the automatic decision of the suction pressure value of atmospheric pressure etc. approximately, with the first valve 51A, the 51B full cut-off, make compressor 5A, 5B and outdoor draft fan 9A, 9B stops, and refrigerant-recovery is arrived off-premises station 1A, pipe arrangement in the 1B, heat source side heat exchanger 8A, also sealed in the 8B.Like this, can suppress more to leak to the space side as the air-conditioning object.
In addition, the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfSmax being compared, can be any among control substrate 10B, 15A, 15B, the 15C.
As mentioned above, aircondition 300 according to present embodiment 2, even many off-premises stations are connected the structure of many indoor sets, because indoor set 2A, 2B, minimum and off-premises station 1A among the flame resistance rank CfL of 2C, maximum comparing among the flame resistance rank CfS of 1B, when the flame resistance rank of any indoor set is forbidden running during less than the flame resistance rank of any off-premises station, with the first valve 51A, 51B and second valve 71A, the 71B full cut-off, so, can prevent that the combustible refrigerant mistake from flowing into the indoor set that does not correspond to combustible refrigerant, can improve the security to the aircondition 300 of combustible refrigerant.
In addition, under most situations, when refrigrant leakage to room space during namely as the space side of air-conditioning object, can be automatically refrigerant-recovery to off-premises station 1A, 1B side, suppress more to leak to the space side as the air-conditioning object, can guarantee the security of indoor.
Fig. 6 represents the aircondition 400 of the another way of present embodiment 2.The structure of aircondition 400 is described based on Fig. 6.In aircondition 400, to being marked with the same tag with aircondition 200,300 identical component parts, its explanation is omitted.
In aircondition 400,1 off-premises station 1C 3 indoor set 20A, 20B, 20C have been connected.Off-premises station 1C is connected liquid line 4A, 4B, the 4C connection that flue 3A, 3B, 3C and gas-liquid two-phase system cryogen that 20B, 20C flow by gas refrigerant are connected with indoor set 20A, when heating running, the gas refrigerant of the HTHP that the compressor 5 of off-premises station 1C is discharged is after passing through cross valve 6, in off-premises station 1C, shunt, flow to indoor set 20A, 20B, 20C via flue 3A, 3B, 3C.Flow to the liquid refrigerant of liquid line 4A, 4B, 4C from indoor set 20A, 20B, 20C by each expansion valve 70A, 70B, the rear interflow of 70C decompression, flow to heat source side heat exchanger 8, again return compressor 5 via cross valve 6.In addition, at the control substrate 10 of off-premises station 1C, with embodiment 1 similarly, have storage part 11 and display part 12.Recording the flame resistance rank CfS of off-premises station 1C at storage part 11.In addition, in off-premises station 1C, with the connecting portion of flue 3A, 3B, 3C near have the first valve 52A, 52B, 52C; With the connecting portion of liquid line 4A, 4B, 4C near have second valve 72A, 72B, 72C.
Flowing of the cold-producing medium of aircondition 400 when heating running at first is described.The gas refrigerant of the HTHP of discharging from the compressor 5 of off-premises station 1C is shunted in off-premises station 1C after having passed through cross valve 6, flows to flue 3A, 3B, 3C.Flow to respectively in parallel load side heat exchanger 13A, 13B, 13C from flue 3A, 3B, 3C, the room air of carrying with indoor blower 14A, 14B, 14C carries out heat exchange and dispels the heat, and becomes the liquid refrigerant of the supercooling state of cryogenic high pressure.The liquid refrigerant that flows out from load side heat exchanger 13A, 13B, 13C flows through liquid line 4A, 4B, 4C, flows into off-premises station 1C, is inflated respectively valve 70A, 70B, 70C decompression, becomes the gas-liquid two-phase state of low-temp low-pressure, flows into heat source side heat exchanger 8.
Flow into the two-phase system cryogen of heat source side heat exchanger 8 and the outdoor air of outdoor draft fan 9 conveyings and carry out heat exchange, become the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5 via cross valve 6 from heat source side heat exchanger 8.That is, same cold-producing medium circulates in indoor set 20A, 20B, 20C.
Other comparison of flame resistance level of off-premises station and the indoor set of aircondition 400 is described.The control substrate 10 of off-premises station 1C be connected with indoor set 20A control substrate 15A by device between under the state that connecting of order wire 18 during supply power, automatically communicate between the control substrate 15A of the control substrate 10 of off-premises station 1C and indoor set 20A.With the aircondition 200 of Fig. 4 similarly, the control substrate 10 of off-premises station 1C is ordered the flame resistance rank CfL of its report indoor set to the control substrate 15A of the indoor set 20A signal of giving an order.Receive the control substrate 15A of indoor set 20A of this order to remaining control substrate 15B and the control substrate 15C signal of giving an order, order them that separately flame resistance rank CfLB, flame resistance rank CfLC circulated a notice of to controlling substrate 15A.Receive the control substrate 15A of circular from control substrate 15B and control substrate 15C, minimum among flame resistance rank CfLA, CfLB, the CfLC, be least corresponding to the flame resistance rank of the indoor set of combustible refrigerant among indoor set 20A, 20B, the 20C, as flame resistance rank CfLmin, send to the control substrate 10 of off-premises station 1C.
Control substrate 10 compares the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfLS.
When flame resistance rank CfLmin＜flame resistance rank CfS, namely, be when more holding incendive cold-producing medium than any cold-producing medium that can use among indoor set 20A, 20B, the 20C when the control substrate 10 of off-premises station 1C is judged as the cold-producing medium that off-premises station 1C can use, control substrate 10 is forbidden the running of the actuator that compressor 5, outdoor draft fan 9, expansion valve 70A, 70B, 70C, indoor blower 14A, 14B, 14C are such.And at least one position among display part 12 or display part 17A, 17B, 17C or remote controller 19A, 19B, 19C shows unusual, with the first valve 52A, 52B, 52C and second valve 72A, the 72B of off-premises station 1C, 72C full cut-off and open.Shown unusual expression indoor set 20A, any not corresponding with the combustible refrigerant content among 20B, the 20C.
When flame resistance rank CfLmin 〉=flame resistance rank CfS, namely, when more holding incendive cold-producing medium than the cold-producing medium that off-premises station 1C can use when the control substrate 10 of off-premises station 1C is judged as the cold-producing medium that whole indoor set 20A, 20B, 20C can use, the license running, the first valve 52A, 52B, 52C and second valve 72A, the 72B of full cut-off off-premises station 1C, 72C and it is open do not carry out abnormal show.
When flame resistance rank CfLmin ≠ flame resistance rank CfS and flame resistance rank CfLmin＜flame resistance rank CfS, namely, than indoor set 20A when the control substrate 10 of off-premises station 1C is judged as the cold-producing medium that off-premises station 1C can use, 20B, when the cold-producing medium that 20C can use more holds incendive cold-producing medium, control substrate 10 is forbidden the running of the equipment that compressor 5 is such, with expansion valve 70A, 70B, 70C, the first valve 52A, 52B, 52C and second valve 72A, 72B, the valve full cut-off that 72C is such and open is at the display part 12 of off-premises station 1C, indoor set 20A, 20B, the display part of 20C, at least one position in the remote controller shows unusual.Shown unusual expression indoor set 20A, any not corresponding with the combustible refrigerant content among 20B, the 20C.At this moment, can not want second valve 72A, 72B, 72C yet, and replace with expansion valve 70A, 70B, 70C.
Refrigrant leakage sensor 81A, the 81B of any in indoor set 20A, 20B, 20C, when 81C detects refrigrant leakage, with the action of embodiment 1 similarly, off-premises station 1C is according to the instruction from control substrate 10, with the first valve 52A, 52B, 52C and second valve 72A, 72B, 72C full cut-off.Perhaps, off-premises station 1C is according to the indication from control substrate 10, cross valve 6 is switched to the cooling operation position, with second valve 72A, 72B, 72C and expansion valve 70A, 70B, the 70C full cut-off, with the first valve 52A, 52B, the 52C standard-sized sheet, make compressor 5 and outdoor draft fan 9 runnings, pass through the predefined duration of runs or reaching approximately the automatic decision of the suction pressure value of atmospheric pressure etc. by the force value of the cold-producing medium that sucked by compressor 5, with the first valve 52A, 52B, the 52C full cut-off, compressor 5 and outdoor draft fan 9 are stopped, with the pipe arrangement of refrigerant-recovery in the off-premises station 1C, also sealed in the heat source side heat exchanger 8.Like this, can suppress more to leak to the space side as the air-conditioning object.
At this moment, if the action object of expansion valve 70A, 70B, 70C, the first valve 52A, 52B, 52C, second valve 72A, 72B, 72C is defined as the object ground that is connected with the indoor set that is detected refrigrant leakage to be controlled, then can only reclaim cold-producing medium from the indoor set that refrigrant leakage is arranged, after the refrigerant-recovery, can carry out in the mode except the indoor set that refrigrant leakage is arranged the running of aircondition.
In addition, the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfSmax being compared, can be any among control substrate 15A, 15B, the 15C.
As mentioned above, aircondition 400 according to present embodiment 2, even 1 off-premises station is connected the structure of many indoor sets, because indoor set 20A, 20B, the flame resistance rank CfS with off-premises station 1C minimum among the flame resistance rank of 20C compares, when the flame resistance rank of any indoor set is forbidden running during less than the flame resistance rank of off-premises station, with the first valve 52A, 52B, 52C and second valve 72A, 72B, the 72C full cut-off, so, can prevent that the inflow of combustible refrigerant mistake from not corresponding in the indoor set of combustible refrigerant, can improve the security to the aircondition 400 of combustible refrigerant.
In addition, under most situations, when refrigrant leakage to room space during namely as the space side of air-conditioning object, can be automatically refrigerant-recovery to off-premises station 1C side, suppress more to leak to the space side as the air-conditioning object, can guarantee the security of indoor.
Fig. 7 represents the aircondition 500 of the another way of present embodiment 2.The structure of aircondition 500 is described based on Fig. 7.In aircondition 500, to being marked with the same tag with aircondition 200,300,400 identical component parts, its explanation is omitted.
Aircondition 500 is provided with feeder pillar 30 between off-premises station 1D and indoor set 20A, 20B, 20C.In the inside of feeder pillar 30, be respectively equipped with the first valve 52A, 52B, 52C at 3 pipe arrangements that branch out from flue 3; Be respectively equipped with second valve 72A, 72B, 72C and expansion valve 70A, 70B, 70C at 3 pipe arrangements that branch out from liquid line 4.
In aircondition 500, to 1 off-premises station 1D, via 1 feeder pillar 30, connecting 3 indoor set 20A, 20B, 20C.Off-premises station 1D is connected gas-liquid two-phase pipe 4 connections that the flue 3 that flowed by gas refrigerant is connected with gas-liquid two-phase system cryogen with feeder pillar.Feeder pillar 30 is connected liquid line 4A, 4B, the 4C that flue 3A, 3B, 3C and liquid refrigerant that 20B, 20C flow by gas refrigerant be connected and is being connected with indoor set 20A.When heating running, after the gas refrigerant of the HTHP that the compressor 5 of off-premises station 1D is discharged has passed through cross valve 6, flow to feeder pillar 30 via flue 3, after feeder pillar 30 interior shuntings, flow to indoor set 20A, 20B, 20C via flue 3A, 3B, 3C.After the liquid refrigerant that flows to liquid line 4A, 4B, 4C from indoor set 20A, 20B, 20C is branched respectively expansion valve 70A, 70B in the case 30,70C decompression, the interflow, flow to heat source side heat exchanger 8 via liquid line 4, again return compressor 5 via cross valve 6.In addition, at the control substrate 10 of off-premises station 1D, with embodiment 1 similarly, have storage part 11 and display part 12.Recording the flame resistance rank CfS of off-premises station 1D at storage part 11.In addition, in feeder pillar 30, with the connecting portion of flue 3A, 3B, 3C near have the first valve 52A, 52B, 52C; With the connecting portion of liquid line 4A, 4B, 4C near have second valve 72A, 72B, 72C.Be connected by order wire 18 between device between the control substrate 10 of off-premises station 1D and the control substrate 31 of feeder pillar 30 and between the control substrate 15A of the control substrate 31 of feeder pillar 30 and indoor set 20A, connected by order wire between the control substrate 15A of indoor set 20A, 20B, 20C, 15B, the 15C, mutually can communicate by letter.
Flowing of the cold-producing medium of aircondition 500 when heating running is described.The gas refrigerant of the HTHP of discharging from the compressor 5 of off-premises station 1D flows to feeder pillar 30 via flue 3 after having passed through cross valve 6, after feeder pillar 30 interior shuntings, flow to indoor set 20A, 20B, 20C via flue 3A, 3B, 3C.Flow to respectively in parallel load side heat exchanger 13A, 13B, 13C from flue 3A, 3B, 3C, the room air of carrying with indoor blower 14A, 14B, 14C carries out heat exchange and dispels the heat, and becomes the liquid refrigerant of the supercooling state of cryogenic high pressure.After the liquid refrigerant that flows to liquid line 4A, 4B, 4C from indoor set 20A, 20B, 20C was branched respectively expansion valve 70A, 70B in the case 30,70C decompression, the interflow flow to heat source side heat exchanger 8 via liquid line 4.
Flow into the two-phase system cryogen of heat source side heat exchanger 8 and the outdoor air of outdoor draft fan 9 conveyings and carry out heat exchange, become the gas refrigerant of the superheat state of high-temperature low-pressure.Then, the gas refrigerant of superheat state is sucked by compressor 5 via cross valve 6 from heat source side heat exchanger 8.That is, same cold-producing medium circulates in indoor set 20A, 20B, 20C.
Illustrate the off-premises station 1D of aircondition 500 and indoor set 20A, 20B, 20C the flame resistance level other relatively.The control substrate 31 of the control substrate 10 of off-premises station 1D, feeder pillar 30 be connected with indoor set 20A control substrate 15A by device between under the state that connecting of order wire 18 during supply power, automatically communicate between the control substrate 15A of the control substrate 10 of off-premises station 1D, the control substrate 31 of feeder pillar 30 and indoor set 20A.The control substrate 10 of the off-premises station 1D signal of giving an order, the flame resistance rank CfL of order report indoor set 20A.Receive the control substrate 15A of indoor set 20A of this order to remaining control substrate 15B and the control substrate 15C signal of giving an order, order them that separately flame resistance rank CfLB, flame resistance rank CfLC circulated a notice of to controlling substrate 15A.Receive the control substrate 15A of circular from control substrate 15B and control substrate 15C, minimum among flame resistance rank CfLA, CfLB, the CfLC, be least corresponding to the flame resistance rank of the indoor set of combustible refrigerant among indoor set 20A, 20B, the 20C, as flame resistance rank CfLmin, send to the control substrate 31 of feeder pillar 30.The control substrate 31 of feeder pillar 30 sends to the flame resistance rank CfLmin of indoor set the control substrate 10 of off-premises station 1D.
Control substrate 10 compares the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfLS.
When flame resistance rank CfLmin＜flame resistance rank CfS, namely, be when more holding incendive cold-producing medium than any cold-producing medium that can use among indoor set 20A, 20B, the 20C when the control substrate 10 of off-premises station 1D is judged as the cold-producing medium that off-premises station 1D can use, control substrate 10 is forbidden the running of the actuator that compressor 5, outdoor draft fan 9, expansion valve 70A, 70B, 70C, indoor blower 14A, 14B, 14C are such.And, at least one position among display part 12, display part 33 or display part 17A, 17B, 17C or remote controller 19A, 19B, 19C shows unusual, with the first valve 52A, 52B, 52C and second valve 72A, the 72B of feeder pillar 30,72C full cut-off and open.Shown unusual expression indoor set 20A, any not corresponding with the combustible refrigerant content among 20B, the 20C.
When flame resistance rank CfLmin 〉=flame resistance rank CfS, namely, when more holding incendive cold-producing medium than the cold-producing medium that off-premises station 1D can use when the control substrate 10 of off-premises station 1D is judged as the cold-producing medium that whole indoor set 20A, 20B, 20C can use, the license running, the first valve 52A, 52B, 52C and second valve 72A, the 72B of full cut-off feeder pillar 30,72C and it is open do not carry out abnormal show.
In addition, refrigrant leakage sensor 81A, the 81B of any in indoor set 20A, 20B, 20C, when 81C detects refrigrant leakage, with the action of embodiment 1 similarly, off-premises station 1D is according to the instruction from control substrate 10, with the first valve 52A, 52B, 52C and second valve 72A, 72B, 72C full cut-off.Perhaps, off-premises station 1D is according to the instruction from control substrate 10, cross valve 6 is switched to the cooling operation position, with second valve 72A, 72B, 72C and expansion valve 70A, 70B, the 70C full cut-off, with the first valve 52A, 52B, the 52C standard-sized sheet, make compressor 5 and outdoor draft fan 9 runnings, pass through the predefined duration of runs or reaching approximately the automatic decision of the suction pressure value of atmospheric pressure etc. by the force value of the cold-producing medium that sucked by compressor 5, with the first valve 52A, 52B, the 52C full cut-off, compressor 5 and outdoor draft fan 9 are stopped, with the pipe arrangement of refrigerant-recovery in the off-premises station 1D, also sealed in the heat source side heat exchanger 8.Like this, can automatically refrigerant-recovery be arrived feeder pillar 30 and off-premises station 1D side, can suppress more to leak to the space side as the air-conditioning object.
At this moment, if the action object of expansion valve, the first valve, second valve is defined as the object ground that is connected with the indoor set that is detected refrigrant leakage to be controlled, then can only reclaim cold-producing medium from the indoor set that refrigrant leakage is arranged, after the refrigerant-recovery, can carry out in the mode except the indoor set that refrigrant leakage is arranged the running of aircondition.
In addition, the magnitude relationship of flame resistance rank CfLmin and flame resistance rank CfS being compared, can be any among control substrate 31 or control substrate 15A, 15B, the 15C.
As mentioned above, aircondition 500 according to present embodiment 2, even 1 off-premises station is connected the structure of 1 feeder pillar and Duo Tai indoor set, because indoor set 20A, 20B, the flame resistance rank CfS with off-premises station 1D minimum among the flame resistance rank CfL of 20C compares, when the flame resistance rank of any indoor set is forbidden running during less than the flame resistance rank of off-premises station, with the first valve in the feeder pillar and second valve full cut-off, so, can prevent that the combustible refrigerant mistake from flowing into the indoor set that does not correspond to combustible refrigerant, can improve the security to the aircondition 500 of combustible refrigerant.In addition, under most situations, when refrigrant leakage to room space during namely as the space side of air-conditioning object, can be automatically refrigerant-recovery to feeder pillar 30 and off-premises station 1D side, can suppress to guarantee the security of indoor toward more leaking as the space side of air-conditioning object.
Embodiment 3
In embodiment 1,2, illustrated to have the two the structure of aircondition of off-premises station and indoor set.But, side among only changing indoor set or off-premises station, when the opposing party continues to use at this point, perhaps, when the place be set connect for the first time off-premises station and indoor set of aircondition, imagination is recording the flame resistance rank of this equipment at the control substrate of a method, apparatus, and does not record the flame resistance rank of this equipment at the control substrate of the opposing party's equipment.The flame resistance rank that just can not compare in the case, off-premises station and indoor set.
For this reason, in present embodiment 3, changing off-premises station, keeping when using original indoor set, with indoor set in corresponding off-premises station when not recording the flame resistance rank, to off-premises station in when not recording the flame resistance rank corresponding indoor set describe.In addition, in present embodiment 3, the component part identical with embodiment 1 is marked with the same tag, its explanation is omitted.
Fig. 8 represents to change the formation of off-premises station, the off-premises station when indoor set is kept use as original indoor set.Off-premises station 1 shown in Figure 8 is identical with off-premises station 1 shown in Figure 1, and still, indoor set shown in Figure 8 is to continue original indoor set 21 of using at this point.This original indoor set 21 although have control substrate 22, is not recording the flame resistance class information of original indoor set 21 at control substrate 22.At this moment, the control substrate 10 of off-premises station 1, although to the control substrate 22 of original indoor set 21 signal of giving an order, order its report flame resistance rank, but, because original indoor set 21 is not recording other information of flame resistance level of self, so, can not be to the control substrate 10 circular flame resistance ranks of off-premises station 1.Thus, the control substrate 10 of off-premises station 1 just can not compare being stored in flame resistance rank CfS in the storage part 11 and the flame resistance rank of original indoor set 21, therefore, the control substrate 10 of off-premises station 1 thinks that original indoor set 21 has unusually, forbid running, with the first valve 51 and second valve 71 full cut-offs and open.
At this moment, show that at the display part 12 of off-premises station 1 the flame resistance rank of original indoor set 21 is not clear so unusual, the transmitting-receiving of the control signal between refusal and the original indoor set 21 is perhaps from 1 pair of original indoor set 21 transmission rub-out signal of off-premises station.
Above, illustrated when original indoor set 21 is not being stored the flame resistance rank, think that original indoor set 21 has unusual and forbids running.But at this moment, the control substrate 10 of off-premises station 1 can be processed 21 of original indoor sets corresponding to noninflammability cold-producing medium ground, and the flame resistance rank CfL of this original indoor set 21 is processed as 1 grade of ground.
In addition, in present embodiment 3, the indoor set that Fig. 8 has been described is original equipment, and still, original indoor set 21 also can be the new indoor set of preparing in addition at the construction field (site).
In addition, preferably, under the original state of off-premises station 1 when dispatching from the factory, the control substrate 10 that is off-premises station 1 is forbidden the state that the actuator of compressor 5 grades turns round, the control substrate 10 of off-premises station 1 at the flame resistance rank CfL that has confirmed original indoor set 21 be more than the flame resistance rank CfS of off-premises station 1 after, permit the control of the actuator running of off-premises station 1.
As mentioned above, if adopt the off-premises station 1 of present embodiment 3, then when off-premises station 1 being changed the off-premises station that becomes corresponding to combustible refrigerant, in the original indoor set 21 of the opposing party that at this point continues to use, do not recording in other situation of flame resistance level, these original indoor sets 21 may not correspond to combustible refrigerant, so, forbid the running as heat pump assembly, with the first valve and second valve full cut-off, therefore, can prevent that the inflow of combustible refrigerant mistake from not corresponding in the indoor set of combustible refrigerant, can guarantee security.
In addition, when the cold-producing medium that import the to use new off-premises station 1 different from old device, also can continue to use indoor set 2, needn't upgrade indoor set 2 corresponding to the renewal of off-premises station 1, can saving resource, energy-conservation, the reduction of erection time.
In addition, to forbid the state that turns round under the original state of off-premises station 1 when dispatching from the factory, the flame resistance rank of record in original indoor set 21 of confirming to be used in combination with off-premises station 1, only just permit running as aircondition during corresponding to combustible refrigerant at original indoor set 21, so, can guarantee the security to the user.
Embodiment 4
In embodiment 1 to 3, but the perhaps device of state of forbidding that the flame resistance rank of off-premises station and indoor set is compared to control running has been described.In present embodiment 4, illustrate when using the virose cold-producing medium of human body, but according to whether the corresponding perhaps state of forbidding of controlling running with toxicity.In addition, in present embodiment 4, aircondition, off-premises station, indoor set in any of use embodiment 1 to 3.
In present embodiment 4, storing the resistance to poison rank CtS of this off-premises station 1 at the storage part 11 of off-premises station 1, storing the resistance to poison rank CtL of this indoor set 2 at the storage part 16 of indoor set 2.At this, based on the toxicity of Fig. 9 for the resistance to poison rank CtL explanation cold-producing medium of the resistance to poison rank CtS of off-premises station 1 and indoor set 2.
The resistance to poison rank can determine according to the toxicity rank of cold-producing medium, so, the toxicity grade classification of cold-producing medium is described first.
One day 8 hours or one the week 40 hours constantly exposure on human do not have the not enough 400ppm(vol% of influential concentration (acceptable concentration) yet) cold-producing medium be classified as 1 grade of toxicity rank, acceptable concentration is at 400ppm(vol%) more than cold-producing medium be classified as 2 grades of toxicity ranks.That is, can say the cold-producing medium that the toxicity rank is larger, toxicity is stronger.The flammability rank of this classification and cold-producing medium is fixed according to the regulation of ISO817, ASHRAE34 similarly.
According to above-mentioned classification, the HFC cold-producing medium of R410A, R22, R32, R134 etc., R290(propane), the R600a(iso-butane) etc. natural refrigerant be classified as 1 grade of toxicity rank.In addition, to human body R717(ammonia excitatory) etc. cold-producing medium be classified as 2 grades of toxicity ranks.
Fig. 9 is the figure that has increased the resistance to poison rank CtL of the toxicity rank of cold-producing medium and indoor set 2 in Fig. 3.With Fig. 3 similarly, suppose that indoor set 2 can use R410A, R32, R290, R717, storing the toxicity rank of these cold-producing mediums at storage part 16.In Fig. 9, the toxicity rank that is recording R410A is that 1 grade, the toxicity rank of R32 are that 1 grade, the toxicity rank of R290 are that 1 grade, the toxicity rank of R717 are 2 grades of such information.The value of maximum is stored as the resistance to poison rank CtL of indoor set 2 in the cold-producing medium toxicity rank that can use.In Fig. 9, the toxicity rank of R717 is as the resistance to poison rank CtL of indoor set 2.
With Fig. 3 similarly, the above has illustrated at storage part 16 and has stored the kind of the cold-producing medium that indoor set 2 can use, toxicity rank and the resistance to poison rank CtL of this cold-producing medium, but, even the not kind of the cold-producing medium that uses of stored energy and the toxicity rank of this cold-producing medium in the storage part 16 only get final product in storage part 16 the resistance to poison rank CtL of off-premises station 2 is pre-stored in manufacturing process.
In addition, be stored in the storage part 11 of off-premises station 1 information too.
In present embodiment 4, by any relatively flame resistance rank CfS, the CfL in the control substrate 15 of the control substrate 10 of off-premises station 1 or indoor set 2, and, relatively resistance to poison rank CtS, CtL.
When flame resistance rank CfS≤CfL and resistance to poison rank CtS≤CtL, the running of license aircondition, the first valve 51 and second valve 71 is open.
As flame resistance rank CfS〉CfL or resistance to poison rank CtS〉during CtL, forbid the running of heat pump cycle.
Show in the display part 17 of the display part 12 of off-premises station 1, indoor set 2, in the remote controller 19 any unusual, with the first valve 51 and second valve 71 full cut-offs and open.Especially as resistance to poison rank CtS〉during CtL, indoor set 2 is not corresponded to virose cold-producing medium as abnormal show.
In addition, with embodiment 3 similarly, during either party in changing off-premises station 1, indoor set 2, imagination is not recording the corresponding resistance to poison rank of this device in the storage part of the original device of the opposing party.At this moment, off-premises station 1 can not carry out other comparison of resistance to poison level with original indoor set 21.Therefore, the control substrate 10 of off-premises station 1 is judged as original indoor set 21 to be had unusually, at this moment, forbids the running as aircondition.
In addition, with the flame resistance rank of embodiment 3 similarly, when the resistance to poison rank is not stored in original device, the control substrate 10 of off-premises station 1 can be processed 21 of original indoor sets corresponding to avirulent cold-producing medium ground, perhaps, the resistance to poison rank CtL with this original indoor set 21 processes as 1 grade of ground.
As mentioned above, because flame resistance rank relatively not only, resistance to poison rank relatively also, so, even using when flammability not only being arranged also the off-premises station 1 of virose cold-producing medium or indoor set 2 mistakes connecting, also can guarantee the safety in indoor set 2 side spaces.In addition, license running when the flame resistance rank CfS that is off-premises station 1 as flame resistance rank CfL and the resistance to poison rank CtL of indoor set 2 and resistance to poison rank CtS are above, so, can in the situation that can guarantee security, make the combination of off-premises station 1 and indoor set 2 have the free degree.Therefore, can be so that the specification change of the indoor set 2 that changes with the change of the cold-producing medium that uses be minimum, can reduce device development cost, shorten delivery date, saving resource, energy-conservation.In addition, during the cold-producing medium that for example in the system that utilization is set, import the to use new off-premises station 1 different from old device, also can continue to use indoor set 2, needn't upgrade indoor set 2 corresponding to the renewal of off-premises station 1, can saving resource, energy-conservation, the reduction of erection time.
Embodiment 5
In embodiment 1 to 4, to controlling the running license according to flame resistance rank, the resistance to poison rank of off-premises station 1 and indoor set 2 or forbidding, guarantee that the mode of security is illustrated.But, even the flame resistance rank CfL of indoor set 2, resistance to poison rank CtL are the measures of having taked anti-explosion mechanism etc. in the equal above and indoor set 2 of off-premises station 1, if flowing through the pressure of the cold-producing medium that comes from off-premises station 1 is more than the design pressure of indoor set 2, then at indoor set 2, cold-producing medium leaks possibly and is full of indoorly, is not preferred from secure context.
For this reason, in present embodiment 5, the withstand voltage mode of controlling the license of running or forbidding of also considering device is described.In addition, in present embodiment 5, aircondition, off-premises station, the indoor set of any in the use embodiment 1 to 4 describe.
In embodiment 1 to 4, at storage part 11 and storage part 16 interior flame resistance rank CfS, CfL and resistance to poison rank CtS, the CtL of storing respectively, and storing the design pressure PS of off-premises station 1 at storage part 11, storing the design pressure PL of indoor set 2 at storage part 16.
Design pressure refers in the Calculation of Strength Design of compressor 5, heat source side heat exchanger 8, the load side heat exchanger 13 in indoor set 2 in off-premises station 1 etc., as the force value of benchmark.That is, the design pressure PL of the design pressure PS of off-premises station 1 and indoor set 2 determines in the design phase in each manufacturing process.For example, the condensing pressure of employed cold-producing medium, evaporating pressure height, design pressure is also high, on the contrary condensing pressure, the evaporating pressure of employed cold-producing medium are low, and design pressure is also low.
During plugged, communicate between the control substrate 10 of off-premises station 1 and the control substrate 15 of indoor set 2, among control substrate 10 and the control substrate 15 any and above-mentioned embodiment 1 to 4 are similarly, carry out flame resistance rank and resistance to poison level other relatively, judge the license of running or forbid.And, carry out the comparison of design pressure PS and design pressure PL.When design pressure PS≤design pressure PL, the running of license aircondition, the first valve 51 and second valve 71 is open.Otherwise, as design pressure PS〉and during design pressure PL, forbid running, with the first valve 51 and second valve 71 full cut-offs and open.
Namely, among control substrate 10 and the control substrate 15 any, when flame resistance rank CfS≤flame resistance rank CfL and design pressure PS≤design pressure PL, perhaps when flame resistance rank CfS≤flame resistance rank CfL, design pressure PS≤design pressure PL and resistance to poison rank CtS≤resistance to poison rank CtL, the running of license aircondition, the first valve 51 and second valve 71 is open.
In addition, as flame resistance rank CfS〉flame resistance rank CfL, resistance to poison rank CtS〉resistance to poison rank CtL or design pressure PS〉during arbitrary situation among the design pressure PL, forbid the running of aircondition, with the first valve 51 and second valve 71 full cut-offs and open.
That is, all be when permitting running at the comparative result of flame resistance rank and design pressure or the comparative result of flame resistance rank, resistance to poison rank and design pressure only, just license running; Wherein any comparative result is when forbidding turning round, and forbids running, with the first valve 51 and second valve 71 full cut-offs and open, and shows unusual.
As mentioned above, in present embodiment 5, when the flame resistance rank CfL of indoor set 2, each flame resistance rank CfS less than off-premises station 1, resistance to poison rank CtS, design pressure PS among resistance to poison rank CtL, the design pressure PL, forbid the control of the running of aircondition, so, can guarantee the security in the space of indoor set 2 sides.In addition, if the flame resistance rank CfL of indoor set 2 and design pressure are then license runnings more than off-premises station 1 equal, so, not only guarantee security, and can make the combination of off-premises station 1 and indoor set 2 have the free degree.Therefore, can be so that the specification change of the indoor set 2 that changes with the change of using cold-producing medium be minimum, can reduce device development cost, shorten delivery date, saving resource, energy-conservation.In addition, when for example in the aircondition that utilization is set, import using the new off-premises station of the cold-producing medium different from old device, also can continue to use indoor set, needn't upgrade corresponding to the renewal of off-premises station indoor set, can saving resource, energy-conservation, the reduction of erection time.
In addition, in embodiment 1 to 5, even as aircondition license running the time, at the flame resistance rank CfL of the flame resistance rank CfS of off-premises station and indoor set not simultaneously, can not be located at the display part of any among off-premises station 1 or the indoor set 2 and showing the content of flame resistance rank CfS ≠ flame resistance rank CfL yet.By showing this content, can prevent user, constructor with off-premises station be connected chance error and connect.
In addition, in embodiment 1 to 5, stored respectively flame resistance rank etc. at storage part 11,16, control substrate 10 for example compares flame resistance rank CfL and CfS, the running of license off-premises station 1 and indoor set 2.But the comparison of flame resistance rank CfL and CfS is carried out even can't help to control substrate 10, and is undertaken by the constructor of device, also can realize purpose of the present invention.That is, have the information of its flame resistance rank CfL as long as off-premises station 1 has information, the indoor set 2 of its flame resistance rank CfS, even control substrate 10 does not carry out their comparison, also can carry out this comparison by the constructor.At this moment, the first valve 51 and second valve 71 need not to be DYN dynamic, can replace with common ball valve or the such hand-operated valve (not shown) of stop valve.That is, the constructor can be after the information of flame resistance rank CfS, CfL in the storage part 11,16 have been confirmed to be stored in respectively in the construction site, and off-premises station 1 is connected connection with indoor set, so, can prevent that mistake from connecting.
In addition, if constructor's handle is implemented the comparison of flame resistance rank CfS, CfL as prerequisite, even then do not store flame resistance rank CfS, CfL in the storage part 11,16, as long as indication mechanisms such as having put down in writing sealing of flame resistance rank CfS, CfL is located on off-premises station 1 and the indoor set 2.Perhaps, make display part 12,17 show respectively the information of flame resistance rank CfS, CfL.
For example, as long as the sealing of information of having put down in writing flame resistance rank CfS sticked on the off-premises station 1, sealing of the information of having put down in writing flame resistance rank CfL sticked on the indoor set 2, and these information of constructor's Visual Confirmation just can be carried out the comparison of flame resistance rank CfS, CfL.
In addition, the indication mechanism of sealing etc. presets when the manufacturing of equipment so long as can confirm the flame resistance rank and get final product as its replacement, for example also can have flame resistance other switch of level of setting or jumper.
The present invention can be used for having the aircondition of off-premises station and indoor set.

Claims (12)

1. an aircondition is made of off-premises station and indoor set; Above-mentioned off-premises station has the compressor of compressed refrigerant and makes above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange; Above-mentioned indoor set has makes above-mentioned cold-producing medium and room air carry out the load side heat exchanger of heat exchange; It is characterized in that,
Above-mentioned aircondition has the first valve and second valve; Above-mentioned the first valve is arranged at the flue that connects above-mentioned off-premises station and above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned second valve is arranged at the liquid line that connects above-mentioned off-premises station and above-mentioned indoor set, is closing when dispatching from the factory;
Above-mentioned off-premises station has the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function;
Above-mentioned indoor set has the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function.
2. aircondition as claimed in claim 1 is characterized in that,
The above-mentioned first information is stored in the first storage part that is arranged at above-mentioned off-premises station;
Above-mentioned the second information is stored in the second storage part that is arranged at above-mentioned indoor set.
3. aircondition as claimed in claim 2, it is characterized in that, has control part, the more above-mentioned first information of this control part and above-mentioned the second information, when being judged as cold-producing medium that above-mentioned outdoor function uses and being the more incendive cold-producing medium of cold-producing medium that uses than above-mentioned indoor function, the control of not opening above-mentioned the first valve and above-mentioned second valve.
4. aircondition as claimed in claim 3, it is characterized in that, above-mentioned control part, when the cold-producing medium of above-mentioned indoor function use is or more incendive cold-producing medium equal with the cold-producing medium of above-mentioned outdoor function use, the control of opening above-mentioned the first valve and above-mentioned second valve.
5. such as each described aircondition in the claim 1 to 4, it is characterized in that,
Above-mentioned off-premises station has the first indication mechanism that shows the above-mentioned first information;
Above-mentioned indoor set has the second indication mechanism that shows above-mentioned the second information.
6. aircondition as claimed in claim 3 is characterized in that,
Have many above-mentioned indoor sets that are connected with above-mentioned off-premises station via above-mentioned gas pipe and aforesaid liquid pipe;
Above-mentioned the first valve is arranged at the above-mentioned gas pipe that connects above-mentioned off-premises station and above-mentioned many indoor sets;
Above-mentioned second valve is arranged at the aforesaid liquid pipe that connects above-mentioned off-premises station and above-mentioned many indoor sets;
Each above-mentioned indoor set has the second storage part of the second relevant information of the inflammability of storing the cold-producing medium that uses with above-mentioned indoor function;
The more above-mentioned first information of above-mentioned control part and a plurality of above-mentioned the second information, be during than above-mentioned arbitrary the more incendive cold-producing medium of cold-producing medium that can use that manys in the indoor set when being judged as cold-producing medium that above-mentioned outdoor function uses, do not open whole above-mentioned the first valves and the control of above-mentioned second valve.
7. aircondition as claimed in claim 6 is characterized in that,
Above-mentioned many indoor sets are connected to above-mentioned off-premises station by a plurality of above-mentioned gas pipes and a plurality of aforesaid liquid pipe;
Above-mentioned the first valve is arranged at each of above-mentioned each flue;
Above-mentioned second valve is arranged at each of above-mentioned each liquid line.
8. aircondition as claimed in claim 3 is characterized in that,
Have by a plurality of above-mentioned gas pipes and many above-mentioned off-premises stations of being connected that the aforesaid liquid pipe connects respectively and the above-mentioned indoor set of Duo Tai;
Above-mentioned the first valve is arranged at respectively above-mentioned a plurality of flue;
Above-mentioned second valve is arranged at respectively above-mentioned a plurality of liquid line;
Each above-mentioned off-premises station has the first storage part of the relevant first information of the inflammability of storing the cold-producing medium that uses with above-mentioned outdoor function;
Each above-mentioned indoor set has the second storage part of the second relevant information of the inflammability of storing the cold-producing medium that uses with above-mentioned indoor function;
The more a plurality of above-mentioned first information of above-mentioned control part and a plurality of above-mentioned the second information, the cold-producing medium of difficult to burn is during than above-mentioned arbitrary the more incendive cold-producing medium of cold-producing medium that can use that manys in the indoor set among being judged as the cold-producing medium that above-mentioned many outdoor functions use, and does not open whole above-mentioned the first valves and the control of above-mentioned second valve.
9. aircondition as claimed in claim 2 is characterized in that,
Above-mentioned the first storage portion stores the 3rd relevant information of toxicity of the cold-producing medium that uses with above-mentioned outdoor function;
Above-mentioned the second storage portion stores the 4th relevant information of toxicity of the cold-producing medium that uses with above-mentioned indoor function;
More above-mentioned the 3rd information of above-mentioned control part and above-mentioned the 4th information, when being judged as cold-producing medium that above-mentioned outdoor function uses and being the stronger cold-producing medium of the cold-producing medium toxicity used than above-mentioned indoor function, the control of not opening above-mentioned the first valve and above-mentioned second valve.
10. aircondition as claimed in claim 2 is characterized in that,
Above-mentioned the first storage portion stores the design pressure value of above-mentioned off-premises station;
Above-mentioned the second storage portion stores the design pressure value of above-mentioned indoor set;
The design pressure value of the more above-mentioned off-premises station of above-mentioned control part and the design pressure value of above-mentioned indoor set, when the design pressure value of above-mentioned off-premises station during greater than the design pressure value of above-mentioned indoor set, the control of not opening above-mentioned the first valve and above-mentioned second valve.
11. the off-premises station of an aircondition, have the compressor of compressed refrigerant and make above-mentioned cold-producing medium and outdoor air carry out the heat source side heat exchanger of heat exchange, and, being connected with indoor set, this indoor set has makes above-mentioned cold-producing medium and room air carry out the load side heat exchanger of heat exchange; It is characterized in that,
Above-mentioned off-premises station has the first valve and second valve; Above-mentioned the first valve is arranged at the flue that is connected with above-mentioned indoor set, is closing when dispatching from the factory; Above-mentioned second valve is arranged at the liquid line that is connected with above-mentioned indoor set, is closing when dispatching from the factory;
Above-mentioned off-premises station has the relevant first information of inflammability of the cold-producing medium that uses with above-mentioned outdoor function.
12. the off-premises station of aircondition as claimed in claim 11 is characterized in that, has:
Storage part is stored the above-mentioned first information; And
Control part, communicate by letter with the control part of the indoor set that is being connected, read the second relevant information of inflammability of the cold-producing medium that uses with above-mentioned indoor function, the more above-mentioned first information and above-mentioned the second information, when being judged as cold-producing medium that above-mentioned outdoor function uses and being the more incendive cold-producing medium of cold-producing medium that uses than above-mentioned indoor function, the control of not opening above-mentioned the first valve and above-mentioned second valve.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104075420A (en) * 2014-07-02 2014-10-01 珠海格力电器股份有限公司 Flammable refrigerant air-conditioner fire protection system and application method thereof as well as air-conditioner
CN104896579A (en) * 2014-03-03 2015-09-09 三菱电机株式会社 Air conditioner device
US10422548B2 (en) 2014-03-03 2019-09-24 Mitsubishi Electric Corporation Air-conditioning apparatus with operability based on flammable refrigerant concentration information in outdoor unit
US20220128277A1 (en) * 2019-07-12 2022-04-28 Daikin Industries, Ltd. Refrigeration cycle system

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JP6156528B1 (en) * 2016-02-16 2017-07-05 ダイキン工業株式会社 Refrigeration equipment
JP6380500B2 (en) * 2016-10-17 2018-08-29 ダイキン工業株式会社 Refrigeration equipment
JP6922748B2 (en) * 2016-10-28 2021-08-18 ダイキン工業株式会社 Air conditioner
JP7152648B2 (en) * 2016-10-28 2022-10-13 ダイキン工業株式会社 air conditioner
WO2021050625A1 (en) * 2019-09-11 2021-03-18 Carrier Corporation Air conditioning system and method of operating the same
EP3862641A1 (en) * 2020-02-05 2021-08-11 Daikin Industries, Ltd. Heat-pump system, indicator, usage-side unit, and information output method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158229A (en) * 1996-06-04 2000-12-12 Aizawa; Nikichi Heat exchanger, method of reusing and recovering refrigerant thereof
US6196008B1 (en) * 1998-05-26 2001-03-06 Matsushita Electric Industrial Co., Ltd. Method for taking custody of, transporting and installing air conditioner
CN101737878A (en) * 2009-12-12 2010-06-16 广东美的电器股份有限公司 Air conditioner using combustible refrigerant and control method thereof
CN102052810A (en) * 2009-10-29 2011-05-11 三菱电机株式会社 Refrigeration/ air-conditioning apparatus and method for setting the refrigeration/ air-conditioning apparatus
CN102121726A (en) * 2010-01-11 2011-07-13 珠海格力电器股份有限公司 Method for preventing leakage of refrigerant and air conditioner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08254363A (en) 1995-03-15 1996-10-01 Toshiba Corp Air conditioning control device
JPH1038354A (en) * 1996-07-24 1998-02-13 Toshiba Corp Air conditioner
JPH10306289A (en) * 1997-05-08 1998-11-17 Matsushita Electric Ind Co Ltd Cycling refrigerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158229A (en) * 1996-06-04 2000-12-12 Aizawa; Nikichi Heat exchanger, method of reusing and recovering refrigerant thereof
US6196008B1 (en) * 1998-05-26 2001-03-06 Matsushita Electric Industrial Co., Ltd. Method for taking custody of, transporting and installing air conditioner
CN102052810A (en) * 2009-10-29 2011-05-11 三菱电机株式会社 Refrigeration/ air-conditioning apparatus and method for setting the refrigeration/ air-conditioning apparatus
CN101737878A (en) * 2009-12-12 2010-06-16 广东美的电器股份有限公司 Air conditioner using combustible refrigerant and control method thereof
CN102121726A (en) * 2010-01-11 2011-07-13 珠海格力电器股份有限公司 Method for preventing leakage of refrigerant and air conditioner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896579A (en) * 2014-03-03 2015-09-09 三菱电机株式会社 Air conditioner device
CN104896579B (en) * 2014-03-03 2017-11-17 三菱电机株式会社 Air-conditioning device
US10422548B2 (en) 2014-03-03 2019-09-24 Mitsubishi Electric Corporation Air-conditioning apparatus with operability based on flammable refrigerant concentration information in outdoor unit
CN104075420A (en) * 2014-07-02 2014-10-01 珠海格力电器股份有限公司 Flammable refrigerant air-conditioner fire protection system and application method thereof as well as air-conditioner
CN104075420B (en) * 2014-07-02 2017-05-17 珠海格力电器股份有限公司 Flammable refrigerant air-conditioner fire protection system and application method thereof as well as air-conditioner
US20220128277A1 (en) * 2019-07-12 2022-04-28 Daikin Industries, Ltd. Refrigeration cycle system

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