CN101344289B - Air conditioner and method for controlling the same - Google Patents
Air conditioner and method for controlling the same Download PDFInfo
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- CN101344289B CN101344289B CN2008101357345A CN200810135734A CN101344289B CN 101344289 B CN101344289 B CN 101344289B CN 2008101357345 A CN2008101357345 A CN 2008101357345A CN 200810135734 A CN200810135734 A CN 200810135734A CN 101344289 B CN101344289 B CN 101344289B
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- 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
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- 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
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
Abstract
The invention provides an air conditioner and a control method, for mixedly connecting an indoor unit having a decompression device with an indoor unit having no decompression device. In the air conditioner, a refrigerant tubing is used to connect an outdoor unit and a plurality of indoor units, which are composed of an expanding valve in the machine and first indoor unit having a heat exchanger and a second indoor unit with the heat exchanger; a decompression device composed of the expanding valve and a on-off valve is connected on an outlet and an inlet of the refrigerant tubing of the second indoor unit and the outdoor unit.
Description
Technical field
The present invention relates to aircondition and control method thereof with how online (multi) type of many indoor units and 1 outdoor unit combination.
Background technology
In the past; Under the situation of the aircondition of many on-lines that the Jiang Duotai indoor unit is connected with 1 outdoor unit; Because the operating condition of each indoor unit and each differences such as load condition within doors; So need in the decompressor in each indoor unit, carry out careful adjustment, not produce unbalanced so that flow into cold-producing medium (thermophore) amount of each indoor unit.But; When the indoor unit (integral air conditioner that in machine, has decompressor; Packaged Air Conditioner) and in machine, do not have the indoor unit of decompressor (room air conditioner RoomAir-Conditioner) mixes when existing, owing in the indoor unit of room air conditioner, do not have decompressor; So can't carry out the adjustment of cold-producing medium fully, above-mentioned mixing existence implements difficulty.
In patent documentation 1; Record with many indoor units that 1 outdoor unit is connected in, be built-in with pressure-reducing valve with heat exchanger and only be built-in with heat exchanger and the aircondition of many on-lines of pressure-reducing valve be set in pipe arrangement a side at the cold-producing medium that is connected with this opposing party's indoor unit the opposing party.In this device; In the opposing party's indoor unit, do not have pressure-reducing valve; But substitute and by carrying out the adjustment of refrigerant amount, so different types of indoor units such as integral air conditioner and room air conditioner can mix existence with above-mentioned pressure-reducing valve that cold-producing medium is connected with pipe arrangement as it.
Patent documentation 1: No. 2925694 communiques of Japan Patent
Different types of indoor unit can mix existence in patent documentation 1, and the aggregate capacity of all indoor units is no more than the capacity of 1 outdoor unit but the quantity of the indoor unit that is connected is constrained to imagination all indoor units situation about turning round simultaneously.
Promptly; Even this is because of under the situation of the chances that do not exist many indoor units all to turn round simultaneously; But when there are all runnings at the scene in contingency; Heat-exchange capacity with respect to the heat-exchange capacity indoor unit of outdoor unit becomes excessive, can't obtain cyclic balance (cyclebalance), and become the cooling and warming recurrent state of short of refrigerant.In the freeze cycle of this short of refrigerant or heat under circulation (changes in temperature circulation) state, cause because the insulation degradation that the cooling deficiency of air compressor motor causes, because the gas temperature that spues rises the refrigerator oil that causes and cold-producing medium deterioration, because the baneful influences such as air-conditioning ability reduction that the minimizing of circulating mass of refrigerant causes.If append the suitable refrigerant amount of packing into for this reason; Then can eliminate the changes in temperature recurrent state of lack of refrigerant; But receive the capacity of flow container and replensiher etc. with respect to capacity, the cold-producing medium of compressor; It is excessive that refrigerant amount becomes, and gets back to the running that refluxes of the liquid of compressor so become the liquid refrigerant that is not evaporated fully by evaporimeter, exist the refrigerator oil viscosity reduce, because the problem that reliabilities such as the bearing wear that the insufficient lubrication of compressor causes, compressor fault reduce.
Summary of the invention
The objective of the invention is to: a kind of aircondition and control method thereof are provided; The indoor unit that can realize being connected with 1 outdoor unit surpasses more than the regulation platform number or the aggregate capacity of indoor unit surpasses the connection of the capacity of outdoor unit, and improve the free degree is set.
The present invention provides a kind of aircondition; Use refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, it is characterized in that comprising: a side the expansion valve that is arranged on a plurality of refrigerant pipings of above-mentioned arbitrarily indoor unit of connection and above-mentioned outdoor unit; Be arranged on the opposing party's open and close valve; And to installing the centralized management control assembly that whole action is controlled; Above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of the indoor unit that is judged as running instruction; Under the state of the valve that is provided with on valve that is provided with on the side's who becomes the outlet in closing above-mentioned a plurality of refrigerant piping the pipe arrangement and the pipe arrangement of opening the opposing party; Making does not have the indoor unit of the above-mentioned running instruction running scheduled time, via the cold-producing medium of valve in above-mentioned outdoor unit side reclaims the indoor unit that does not have above-mentioned running instruction of above-mentioned open mode.
In addition; The present invention provides a kind of aircondition; Use refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together; And comprise that it is characterized in that: above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine to installing the centralized management control assembly that whole action is controlled; Second indoor unit; In machine, have heat exchanger and do not have expansion valve; Wherein, Side at a plurality of refrigerant pipings that connect above-mentioned second indoor unit and above-mentioned outdoor unit disposes expansion valve; Dispose open and close valve the opposing party, above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that is judged as running instruction and second indoor unit, the side's who becomes the outlet in closing a plurality of refrigerant pipings that are connected with second indoor unit that does not have above-mentioned running to instruct valve and open the opposing party's valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned valve of opening in above-mentioned outdoor unit side reclaims second indoor unit that does not have above-mentioned running instruction.
In addition; The present invention provides a kind of aircondition; Use refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together; And comprise that it is characterized in that: above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine to installing the centralized management control assembly that whole action is controlled; Second indoor unit; In machine, have heat exchanger and do not have expansion valve; Wherein, On as the refrigerant piping that expansion valve one side is not set refrigerant piping, above-mentioned first indoor unit that connects above-mentioned first indoor unit and above-mentioned outdoor unit, be connected with open and close valve; Above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that is judged as running instruction and second indoor unit; Close the expansion valve of first indoor unit that does not have above-mentioned running instruction and open above-mentioned open and close valve, the running scheduled time is thus via the cold-producing medium of the above-mentioned open and close valve of opening in above-mentioned outdoor unit side reclaims first indoor unit that does not have above-mentioned running instruction.
In addition; The present invention provides a kind of control method of aircondition; In this aircondition; Use refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, dispose expansion valve, dispose open and close valve the opposing party a side of a plurality of refrigerant pipings of above-mentioned arbitrarily indoor unit of connection and above-mentioned outdoor unit; It is characterized in that: be under the situation more than the capacity of outdoor unit at the aggregate capacity of the indoor unit that running instruction is arranged; Valve on cutting out the pipe arrangement that is arranged on the side who becomes the outlet in above-mentioned a plurality of refrigerant piping and opening under the state of the valve on the pipe arrangement that is arranged on the opposing party, making does not have the indoor unit of the above-mentioned running instruction running scheduled time, via the cold-producing medium of valve in above-mentioned outdoor unit side reclaims the indoor unit that does not have above-mentioned running instruction of above-mentioned open mode.In addition, after the scheduled time has been carried out in the running that makes the cold-producing medium in above-mentioned outdoor unit one side reclaims the indoor unit that does not have above-mentioned running instruction, close the valve of the open mode on the above-mentioned the opposing party's of being arranged on the pipe arrangement.
In addition; The present invention provides a kind of control method of aircondition, in this aircondition, uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together; Above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine; Second indoor unit; In machine, have heat exchanger and do not have expansion valve; Wherein the side at a plurality of refrigerant pipings that connect above-mentioned second indoor unit and above-mentioned outdoor unit disposes expansion valve; Dispose open and close valve the opposing party; It is characterized in that: be under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that running instruction is arranged and second indoor unit, close the side's who becomes the outlet in a plurality of refrigerant pipings that are connected with second indoor unit that does not have above-mentioned running to instruct valve, and open the opposing party's valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned valve of opening in above-mentioned outdoor unit side reclaims second indoor unit that does not have above-mentioned running instruction.In addition, after the cold-producing medium reclaimed second indoor unit that does not have above-mentioned running instruction to above-mentioned outdoor unit one side in, close above-mentioned the opposing party's valve.
In addition; The present invention provides a kind of control method of aircondition, in this aircondition, uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together; Above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine; Second indoor unit; In machine, have heat exchanger and do not have expansion valve; Wherein on as the refrigerant piping that expansion valve one side is not set refrigerant piping, above-mentioned first indoor unit that connects above-mentioned first indoor unit and above-mentioned outdoor unit, be connected with open and close valve; It is characterized in that: be under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that running instruction is arranged and second indoor unit; Close the expansion valve of first indoor unit that does not have above-mentioned running instruction and open above-mentioned open and close valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned open and close valve of opening in above-mentioned outdoor unit side reclaims first indoor unit that does not have above-mentioned running instruction.In addition, after the cold-producing medium reclaimed the 1st indoor unit that does not have above-mentioned running instruction to above-mentioned outdoor unit one side in, close above-mentioned open and close valve.
According to the present invention; Aircondition can not sink into the changes in temperature recurrent state of short of refrigerant; Can realize that the indoor unit number that is connected with 1 outdoor unit surpasses more than the regulation platform number or the aggregate capacity of indoor unit surpasses the connection of the capacity of outdoor unit, and improve the free degree that is provided with of indoor unit.
Description of drawings
Fig. 1 is the freeze cycle structure chart of the embodiment of the invention.
Fig. 2 is the control module figure of the embodiment of the invention.
Fig. 3 is the control system diagram of the embodiment of the invention.
Fig. 4 is the control flow chart of the embodiment of the invention.
Label declaration
A: outdoor unit; A (a1, a2 ..., an): first indoor unit; B (b1, b2 ..., bn): second indoor unit; D1, D2: refrigerant piping; C: decompressor; 4: heat exchanger; 5,6: expansion valve; 7: open and close valve (magnetic valve); 8: the gas side branched pipe; 9: the hydraulic fluid side branched pipe; 10: compressor; 11: cross valve; 13: heat exchanger; 14: expansion valve; 15: refrigerant tank
The specific embodiment
Fig. 1 is the cold cycling structure chart of the multi-gang air-conditioner (aircondition of how online shape) of the embodiment of the invention.
Multi-gang air-conditioner by 1 outdoor unit A, many indoor unit a (a1, a2 ..., an), b (b1, b2 ..., bn) and the refrigerant piping D1, D2 that connect each unit constitute.Refrigerant piping D1, D2 are connected by branch through gas side branched pipe 8 and hydraulic fluid side branched pipe 9, are assigned to indoor unit a and b and the supply system cryogen.Stop valve 1 to be connected and refrigerant piping D2 is connected with hydraulic fluid side prevention valve 2 through gas side, thereby constitute a cooling and heating circulation system refrigerant piping D1 and outdoor unit A.
Indoor unit a is the indoor unit that in machine, has decompressor (indoor expansion valve 5), also has indoor blower 3 and indoor heat converter 4 in addition.Indoor unit b is the indoor unit that in machine, does not have decompressor (indoor expansion valve 5), has indoor blower 3 and indoor heat converter 4.In the way of the refrigerant piping D2 that is connected with gas side branched pipe 8 and the hydraulic fluid side branched pipe 9 of indoor unit b, D1, be connected with respectively by the expansion valve 6 of outside installation and the outside of magnetic valve (open and close valve) 7 formations decompressor C is installed.At this, indoor unit a is made as first indoor unit, indoor unit b is made as second indoor unit.
In outdoor unit A, 10 is compressor, and 11 is cross valve, and 12 is outdoor draft fan, and 13 is outdoor heat converter, and 14 is outdoor expansion valve, and 15 is refrigerant tank, and 16 is reservoir (Accumulator).Arrow representes to flow through the direction of the cold-producing medium of refrigerant piping, when solid arrow is represented cooling operation, when reverse dotted arrow representes to heat running.The flow direction of this cold-producing medium is that the switching through the cross valve in the outdoor unit A 11 decides.
Fig. 2 is the control module figure of the embodiment of the invention.17 for providing the remote controller of action command (turn round, stop, operation mode, air quantity/direction setting, temperature setting etc.) to indoor unit a, b, 18 is the remote controller line.20 is the centralized management control assembly that whole action is controlled to multi-gang air-conditioner, and 23 is the controller of outdoor unit A, and 24 is the controller of indoor unit a, and 25 is the controller of indoor unit b.21 for connecting the centralized management control conveyer line of above-mentioned control assembly 20 and controller 23; 19 for connecting the indoor and outdoor conveyer line of outdoor unit A and indoor unit a, b, and 22 for installing the decompressor conveyer line in above-mentioned controller 25 of connection and the outside outside that decompressor C is installed.
Fig. 3 is the control system diagram of the embodiment of the invention.In above-mentioned control module Fig. 2,, then transmit information and the instruction of remote controller 17 of the state of indoor unit a to outdoor unit A from above-mentioned controller 24 if at first exported action command to indoor unit a from remote controller 17.The controller 23 of outdoor unit A transmits based on this, transmits information and the information of indoor unit a and the information (instruction) of remote controller 17 of outdoor unit A to control assembly 20.
The control assembly 20 that receives these information is used for according to the control program of storage in advance each indoor unit being carried out the instruction (turn round, stop, operation mode, air quantity/wind direction are set, temperature is set, remote controller is permitted/forbidden etc.) of unified management to controller 23 loopbacks.Controller 23 sends the instruction from indoor unit A according to the instruction of control assembly 20 to controller 24.Controller 24 transmits the information of indoor unit a and outdoor unit A to remote controller 17, and to the instruction of the expansion valve 5 transmission expansion valve openings of indoor unit a.
If exported action command from remote controller 17 to indoor unit b, then with likewise above-mentioned, slave controller 25 transmits the information of the state of representing indoor unit b and the instruction of remote controller 17 to outdoor unit A.Controller 23 transmits based on this, transmits the information of outdoor unit A, the information of indoor unit b, the information (instruction) of remote controller 17 to control assembly 20.
The control assembly 20 that receives these information transmits the instruction (turn round, stop, operation mode, air quantity/wind direction are set, temperature is set, remote controller is permitted/forbidden etc.) that is used for according to the control program of storage in advance each indoor unit being carried out unified management to controller 23.Controller 23 is according to the instruction of control assembly 20, sends the instruction from indoor unit A to the controller 25 of indoor unit b.Controller 25 is to the information of remote controller 17 transmission indoor unit b and outdoor unit A, and the instruction of the expansion valve 6 transmission expansion valve openings of decompressor C being installed to the outside, and then to the outside instruction of the magnetic valve 7 transmission magnetic valves switchings of decompressor C is installed.In this control system, via control assembly 20 and outdoor unit A, remote controller 17 also exchanges information between remote controller each other, and indoor unit 24,25 also exchanges information between indoor unit.
Like this in above-mentioned control system, according to the action command from remote controller 17 or control assembly 20, the air-conditioning action of beginning system under the supervision of the entire system of control assembly 20, is proceeded the air-conditioning action.
Then, according to the control flow chart of the embodiment of the invention shown in Figure 4 action is described.In the present embodiment, suppose many indoor unit a (a1, a2 ..., an), b (b1, b2 ..., bn) aggregate capacity surpassed the capacity of 1 outdoor unit A.
In control module Fig. 2, control system diagram 3, if at first exported the running instruction from remote controller 17 or control assembly 20, then final instruction, entry into service in step 101 according to control assembly 20.Then, in step 102, judge whether to exist not (stopping) indoor unit from control assembly 20 output running instructions.Judge by the collect indoor unit a of self- controller 24 and 25, the information of b of control assembly 20.
In this result of determination is under the situation of " denying ", and all indoor unit a, b entry into service are so cause 1 outdoor unit A to surpass its capacity ground running.In order to prevent this phenomenon, the running that stops all indoor units begins, and then gives a warning in step 120.In step 102, under the situation of " being ", transfer to step 103, whether the aggregate capacity of the indoor unit that judgement will be turned round is more than the capacity of outdoor unit A.
Under the situation that is judged as " denying " of this step 103, owing to do not surpass the capacity of outdoor unit A, the indoor unit of intended operation can turn round beginning running usually in step 121.In step 103,, if still turn round, then cause the capacity that surpasses 1 outdoor unit A, and become the refrigerating/heating recurrent state of lack of refrigerant under the situation of " being ".Therefore, in step 104,, begin to reclaim not, transfer to step 105 from the control of the refrigerant-recovery running action of the cold-producing medium of (stopping) indoor units of control assembly 20 output running instructions in order to ensure the refrigerant amount of necessity.
In step 105, the outside that should reclaim the indoor unit in the stopping of cold-producing medium is installed the connection state of decompressor and confirm.That is, judge whether to be connected with the outside that constitutes by expansion valve 6 and electromagnetic opening and closing valve 7 decompressor C is installed.This judgement is in system diagram 3, to be carried out according to the information of indoor unit a or the information of indoor unit b by control assembly 20.In addition, the indoor unit that should reclaim cold-producing medium in the indoor unit in stopping to be meant, the refrigerant amount of indoor unit adds up and indoor unit that quilt when having reached the amount that reclaim has added up in being stopped by 20 pairs of control assemblies.
In the judgement of step 105,, transfer to step 106 and step 115 respectively, no matter be which all makes and reclaim the indoor unit entry into service under the situation of " being " and " denying ".In step 105,, transfer to step 107, judge whether operation mode is refrigeration from step 106 under the situation of " being ".Under the situation of cooling operation pattern (" being "), in step 108, close the expansion valve 6 of decompressor C, in step 109, make cooling operation continue the scheduled time.In addition, in step 105 for the indoor unit of the situation of " being " owing to the outside decompressor C is installed and is connected, so in Fig. 1, be meant indoor unit b1, b2 ..., bn.
For this cooling operation, be that example describes with situation in Fig. 1 from indoor unit b1 recovery cold-producing medium.In this cooling operation, refrigerant piping D2 is the outlet, and refrigerant piping D1 is an incoming road.
In step 108, closed expansion valve 6, but owing to carrying out cooling operation, so magnetic valve 7 is opened.If under this state, continue cooling operation, then cold-producing medium flows into outdoor unit A through refrigerant piping D1 along the solid arrow direction via magnetic valve 7, and on the other hand, the mobile valve 6 that is inflated of the cold-producing medium of refrigerant piping D2 stops.Therefore, the cold-producing medium of indoor unit b1 is recycled to the refrigerant tank 15 of outdoor unit A from heat exchanger 4 and connected refrigerant piping.
If in step 109, make cooling operation carry out the scheduled time, then magnetic valve 7 is closed in step 110.The cooling operation of indoor unit b1 stops in step 111 then, and refrigerant-recovery running control finishes.In addition, through closing magnetic valve 7, when common operation of air conditioner, cold-producing medium is invalidly invaded in heat exchanger 4 grades in the indoor unit b1.
In step 107,, in step 112, close the magnetic valve 7 of decompressor C, in step 113, make to heat the running continuation scheduled time under the situation of " denying " (heating operation mode).Heat in the running at this, refrigerant piping D1 is the outlet, and refrigerant piping D2 is an incoming road.
Heating running for this, is that example describes with the situation from indoor unit b1 recovery cold-producing medium in Fig. 1.Magnetic valve 7 cuts out in step 112, but owing to carrying out heating running, so expansion valve 6 is opened.If under this state, continue to heat running, then cold-producing medium flows into outdoor unit A through refrigerant piping D2 along the dotted arrow direction via expansion valve 6, and on the other hand, flowing of the cold-producing medium of refrigerant piping D1 stoped by magnetic valve 7.Therefore, the cold-producing medium of indoor unit b1, the cold-producing medium that promptly is included in heat exchanger 4 and the connected refrigerant piping are recycled in the refrigerant tank 15 of outdoor unit A.
Heating turns round has carried out the scheduled time if in step 113, make, and then in step 114, closes expansion valve 6.The running that heats of indoor unit b1 stops in step 111 then, and refrigerant-recovery running control finishes.In addition, through closing expansion valve 6, when common operation of air conditioner, cold-producing medium is invalidly invaded in heat exchanger 4 grades in the indoor unit b1.
Getting back to the front, is under the situation of " denying " in step 105, and the running of beginning indoor unit judges in step 116 whether operation mode is refrigeration in step 115.For under the situation of " being ", in step 117, close expansion valve 5 in the cooling operation pattern, in step 118, make cooling operation continue the scheduled time.In addition, the indoor unit of situation that is " denying " in step 105 is owing to not install decompressor C with the outside and be not connected, thus in Fig. 1, be meant indoor unit a1, a2 ..., an.
For cooling operation, be that example describes with the situation that reclaims cold-producing medium from indoor unit a2 of Fig. 1.If under the state of having closed expansion valve 5, carry out cooling operation, then cold-producing medium flows into outdoor unit A through refrigerant piping D1 along the solid arrow direction from indoor unit a2, and on the other hand, the mobile valve 5 that is inflated of the cold-producing medium of refrigerant piping D2 stops.Therefore, the cold-producing medium of indoor unit a2, the cold-producing medium that promptly is included among indoor heat converter 4 and the connected refrigerant piping D1 are recycled in the refrigerant tank 15 of outdoor unit A.
If in step 118, make cooling operation carry out the scheduled time, then the cooling operation of indoor unit a2 stops in step 111, and refrigerant-recovery running control finishes.Under this state, because the refrigerant piping D1 of the opposition side of expansion valve 5 opens, so cold-producing medium might flow in the indoor heat converter 4 of indoor unit a2 through it and when common operation of air conditioner.In order to prevent this phenomenon reliably, also can connect magnetic valve 7, and in step 122, close this magnetic valve 7 as appending to the refrigerant piping D1 of indoor unit a2 in that kind shown in the with dashed lines among Fig. 1.
Be under the situation of " denying " in step 116; Indoor unit a2 is in and heats in the running and the flow direction of cold-producing medium is the dotted arrow direction; But owing to do not stop the magnetic valve 7 that flows of the cold-producing medium of refrigerant piping D1; And expansion valve 5 is opened on the other hand, thus cold-producing medium only through and can't reclaim.Therefore, in step 119, stop the running of indoor unit a2, and give a warning.
Under the situation that heats the recovery of also carrying out cold-producing medium in the running at indoor unit a2; As connecting magnetic valve 7 such appending shown in the with dashed lines among Fig. 1 to refrigerant piping D1; Replace step 119 and in step 123, close magnetic valve 7, in step 124, make to heat the running continuation scheduled time.If heat running closing magnetic valve 7 and open under the state of expansion valve 5; Then cold-producing medium flows along the dotted arrow direction through refrigerant piping D2 via expansion valve 5; But because flowing of the cold-producing medium of refrigerant piping D1 stoped by magnetic valve 7, so the cold-producing medium of indoor unit a1, the cold-producing medium that promptly is included among heat exchanger 4 and the connected refrigerant piping D2 are recycled in the refrigerant tank 15 of outdoor unit A.
Heating turns round has carried out the scheduled time if in step 124, make, and then in step 125, closes expansion valve 5.The running that heats of indoor unit a2 stops in step 111 then, and refrigerant-recovery running control finishes.In addition, through closing expansion valve 5, when common operation of air conditioner, cold-producing medium can invalidly not flow into or invade in the indoor unit a2.
The action of above-mentioned refrigerant-recovery is carried out simultaneously and when having reached necessary amount, can be made its end through closing necessary valve at many indoor units.In addition, also can reclaim by platform for the cold-producing medium that reclaims indoor unit reliably.
After that kind has reclaimed cold-producing medium as stated, the common running action of beginning air-conditioning in step 121.In this running,,, can not become the changes in temperature circulation of short of refrigerant so the cold-producing medium of on-stream circulation deficiency can not occur because cold-producing medium can not flow into the indoor unit that has carried out in the stopping of refrigerant-recovery.
In the above-described embodiments; In the way of the refrigerant piping D2 that has connected the indoor unit b that in machine, does not have decompressor, D1; Through connecting the outside that constitutes by expansion valve 6 and magnetic valve 7 decompression transposition C is installed; Even under the operating condition and each condition of different such as load condition within doors of indoor unit b; Also can utilize the outside expansion valve 6 that decompressor C is installed to adjust the refrigerant amount that flows through indoor unit, can realize being connected with the mixing of the indoor unit a that in machine, has decompressor.
And can realize stipulating being connected more than the platform number or more than the regulation aggregate capacity with the indoor unit of 1 outdoor unit combination.
In addition, also can decompressor C be installed in the outside that be made up of expansion valve 6 and magnetic valve 7 is connected to outdoor unit A and in machine, has in the way of refrigerant piping D1 that the indoor unit a of decompressor couples together, D2.Can pass through thus to replace the indoor expansion valve 5 in the indoor unit a machine, and use the expansion valve 6 of outside installation decompressor C, eliminate flow of refrigerant sound, vibration, can improve quietness, the comfortableness of air-conditioning from indoor expansion valve 5.In addition, owing on the refrigerant piping D2 of indoor unit b, be connected with the expansion valve 6 of decompressor C, so no flow of refrigerant sound, vibration in indoor unit b.
Claims (9)
1. an aircondition uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, and it is characterized in that comprising:
Be arranged on a side the expansion valve of a plurality of refrigerant pipings of above-mentioned arbitrarily indoor unit of connection and above-mentioned outdoor unit;
Be arranged on the opposing party's open and close valve; And
To installing the centralized management control assembly that whole action is controlled,
Above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of the indoor unit that is judged as running instruction; Under the state of the valve that is provided with on valve that is provided with on the side's who becomes the outlet in closing above-mentioned a plurality of refrigerant piping the pipe arrangement and the pipe arrangement of opening the opposing party; Making does not have the indoor unit of the above-mentioned running instruction running scheduled time, via the cold-producing medium of valve in above-mentioned outdoor unit side reclaims the indoor unit that does not have above-mentioned running instruction of above-mentioned open mode.
2. an aircondition uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, and comprises installing the centralized management control assembly that whole action is controlled, and it is characterized in that:
Above-mentioned many indoor units possess:
First indoor unit has expansion valve and heat exchanger in machine;
Second indoor unit has heat exchanger and does not have expansion valve in machine, wherein
Side at a plurality of refrigerant pipings that connect above-mentioned second indoor unit and above-mentioned outdoor unit disposes expansion valve, disposes open and close valve the opposing party,
Above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that is judged as running instruction and second indoor unit; Side's who becomes the outlet in closing a plurality of refrigerant pipings that are connected with second indoor unit that does not have above-mentioned running instruction valve and open the opposing party's valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned valve of opening in above-mentioned outdoor unit side reclaims second indoor unit that does not have above-mentioned running instruction.
3. an aircondition uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, and comprises installing the centralized management control assembly that whole action is controlled, and it is characterized in that:
Above-mentioned many indoor units possess:
First indoor unit has expansion valve and heat exchanger in machine;
Second indoor unit has heat exchanger and does not have expansion valve in machine, wherein
On as the refrigerant piping that expansion valve one side is not set refrigerant piping, above-mentioned first indoor unit that connects above-mentioned first indoor unit and above-mentioned outdoor unit, be connected with open and close valve,
Above-mentioned centralized management control assembly is under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that is judged as running instruction and second indoor unit; Close the expansion valve of first indoor unit that does not have above-mentioned running instruction and open above-mentioned open and close valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned open and close valve of opening in above-mentioned outdoor unit side reclaims first indoor unit that does not have above-mentioned running instruction.
4. the control method of an aircondition; In this aircondition; Use refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together; Side at a plurality of refrigerant pipings that connect above-mentioned arbitrarily indoor unit and above-mentioned outdoor unit disposes expansion valve, disposes open and close valve the opposing party, it is characterized in that:
Be under the situation more than the capacity of outdoor unit at the aggregate capacity of the indoor unit that running instruction is arranged; Under the state of the valve that is provided with on valve that is provided with on the side's who becomes the outlet in closing above-mentioned a plurality of refrigerant piping the pipe arrangement and the pipe arrangement of opening the opposing party; Making does not have the indoor unit of the above-mentioned running instruction running scheduled time, via the cold-producing medium of valve in above-mentioned outdoor unit side reclaims the indoor unit that does not have above-mentioned running instruction of above-mentioned open mode.
5. the control method of aircondition according to claim 4 is characterized in that:
After the scheduled time has been implemented in the running that makes the cold-producing medium in above-mentioned outdoor unit side reclaims the indoor unit that does not have above-mentioned running instruction, close the valve of the open mode that is provided with on above-mentioned the opposing party's the pipe arrangement.
6. the control method of an aircondition in this aircondition, uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, and above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine; Second indoor unit has heat exchanger and does not have an expansion valve in machine, wherein the side at a plurality of refrigerant pipings that connect above-mentioned second indoor unit and above-mentioned outdoor unit disposes expansion valve, disposes open and close valve the opposing party, it is characterized in that:
Be under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that running instruction is arranged and second indoor unit; Close the side's who becomes the outlet in a plurality of refrigerant pipings that are connected with second indoor unit that does not have above-mentioned running instruction valve; And open the opposing party's valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned valve of opening in above-mentioned outdoor unit side reclaims second indoor unit that does not have above-mentioned running instruction.
7. the control method of aircondition according to claim 6 is characterized in that:
After the cold-producing medium that reclaims to above-mentioned outdoor unit side in second indoor unit that does not have above-mentioned running instruction, close above-mentioned the opposing party's valve.
8. the control method of an aircondition in this aircondition, uses refrigerant piping that outdoor unit and Duo Tai indoor unit are coupled together, and above-mentioned many indoor units possess: first indoor unit has expansion valve and heat exchanger in machine; Second indoor unit; In machine, have heat exchanger and do not have expansion valve; Wherein on as the refrigerant piping that expansion valve one side is not set refrigerant piping, above-mentioned first indoor unit that connects above-mentioned first indoor unit and above-mentioned outdoor unit, be connected with open and close valve, it is characterized in that:
Be under the situation more than the capacity of outdoor unit at the aggregate capacity of first indoor unit that running instruction is arranged and second indoor unit; Close the expansion valve of first indoor unit that does not have above-mentioned running instruction and open above-mentioned open and close valve; The running scheduled time is thus via the cold-producing medium of the above-mentioned open and close valve of opening in above-mentioned outdoor unit side reclaims first indoor unit that does not have above-mentioned running instruction.
9. the control method of aircondition according to claim 8 is characterized in that:
After the cold-producing medium reclaimed first indoor unit that does not have above-mentioned running instruction to above-mentioned outdoor unit side in, close above-mentioned open and close valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007183300A JP4500331B2 (en) | 2007-07-12 | 2007-07-12 | Air conditioning apparatus and control method thereof |
| JP2007183300 | 2007-07-12 | ||
| JP2007-183300 | 2007-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101344289A CN101344289A (en) | 2009-01-14 |
| CN101344289B true CN101344289B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101357345A Active CN101344289B (en) | 2007-07-12 | 2008-07-03 | Air conditioner and method for controlling the same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2015005B1 (en) |
| JP (1) | JP4500331B2 (en) |
| CN (1) | CN101344289B (en) |
| ES (1) | ES2673505T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4953018B2 (en) | 2005-03-15 | 2012-06-13 | 味の素株式会社 | Drug transfer device |
| CN102538299B (en) * | 2012-01-18 | 2014-03-26 | 上海汉福空气处理设备有限公司 | Heat-pump type temperature and humidity adjustable unit |
| US10429083B2 (en) | 2013-08-30 | 2019-10-01 | Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. | Multi-type air conditioner system |
| CN103471183B (en) * | 2013-08-30 | 2016-01-06 | 青岛海信日立空调系统有限公司 | Ground heating type multi-online air-conditioning system |
| JP6897738B2 (en) | 2019-09-30 | 2021-07-07 | ダイキン工業株式会社 | Refrigeration equipment and heat source unit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334459A (en) * | 1986-07-29 | 1988-02-15 | 株式会社東芝 | Air conditioner |
| JP2925694B2 (en) * | 1990-09-18 | 1999-07-28 | 三洋電機株式会社 | Air conditioner |
| JPH04169754A (en) * | 1990-10-31 | 1992-06-17 | Toshiba Corp | Air conditioner |
| JPH05164437A (en) * | 1991-12-12 | 1993-06-29 | Hitachi Ltd | Air conditioner |
| JPH07234038A (en) * | 1994-02-18 | 1995-09-05 | Sanyo Electric Co Ltd | Multiroom type cooling-heating equipment and operating method thereof |
| JP3698025B2 (en) * | 2000-07-13 | 2005-09-21 | ダイキン工業株式会社 | Air conditioner |
| JP4089139B2 (en) * | 2000-07-26 | 2008-05-28 | ダイキン工業株式会社 | Air conditioner |
-
2007
- 2007-07-12 JP JP2007183300A patent/JP4500331B2/en active Active
-
2008
- 2008-07-03 CN CN2008101357345A patent/CN101344289B/en active Active
- 2008-07-09 EP EP08012385.4A patent/EP2015005B1/en active Active
- 2008-07-09 ES ES08012385.4T patent/ES2673505T3/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP4500331B2 (en) | 2010-07-14 |
| EP2015005A2 (en) | 2009-01-14 |
| EP2015005B1 (en) | 2018-03-14 |
| EP2015005A3 (en) | 2011-09-21 |
| JP2009019829A (en) | 2009-01-29 |
| CN101344289A (en) | 2009-01-14 |
| ES2673505T3 (en) | 2018-06-22 |
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Effective date of registration: 20160812 Address after: Hongkong, China Patentee after: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances Inc. |
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Effective date of registration: 20180703 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Hongkong, China Patentee before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |
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