CN102252404A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN102252404A CN102252404A CN2010101801051A CN201010180105A CN102252404A CN 102252404 A CN102252404 A CN 102252404A CN 2010101801051 A CN2010101801051 A CN 2010101801051A CN 201010180105 A CN201010180105 A CN 201010180105A CN 102252404 A CN102252404 A CN 102252404A
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- air
- conditioner
- producing medium
- cold
- controller
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
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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
- F25B2500/00—Problems to be solved
- F25B2500/27—Problems to be solved characterised by the stop of the refrigeration cycle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a control method thereof, wherein the air conditioner comprises an indoor unit, an outdoor unit, a refrigerant circulation loop, a controller and a refrigerant detector, wherein the refrigerant circulation loop is connected with the indoor unit and the outdoor unit, and comprises an air pipeline and a liquid pipeline; and the controller is arranged in the indoor unit, and the refrigerant detector is electrically connected with the controller. According to the invention, the residual refrigerant in the air conditioner indoor unit can be reduced or prevented, and the safety of the air conditioner is improved.
Description
Technical field
The present invention relates to field of air conditioning, more specifically, relate to a kind of air-conditioner and control method thereof.
Background technology
In existing split type room air conditioner, indoor set need dock the formation loop by tube connector with off-premises station, and this class air-conditioner is provided with big minor valve or the snap joint that is used to take on off-premises station.When air-conditioning was not worked, the outside was communicated with the indoor always, for the balance that keep-ups pressure, can stockpile cold-producing medium in the indoor always.
A kind of settling mode is provided in the correlation technique, this mode is in order to cut off the connected state of indoor and outdoor machine when not working, respectively increase a magnetic valve in that the big minor valve of air-conditioner outdoor unit (or snap joint) is preceding, and magnetic valve is in closed condition when air-conditioner is not worked, cut off flowing of cold-producing medium, the outside cold-producing medium is enclosed in outdoor heat exchanger and the pipeline, but owing to also have the cold-producing medium of 20%-40% to circulate in the indoor during air-conditioning work, air-conditioning quits work, and this part cold-producing medium can stay within side until start once more always after the solenoid valve shuts.
Problem at being difficult in the correlation technique find that in time cold-producing medium leaks and effectively handles in the running of air conditioner does not propose effective solution at present as yet.
Summary of the invention
The present invention aims to provide a kind of air-conditioner and control method thereof, can solve to be difficult to find in time cold-producing medium leakage and the problem of effectively handling in the running of air conditioner.
According to an aspect of the present invention, provide a kind of air-conditioner.
This air-conditioner comprises: indoor set; Off-premises station; Refrigerant circulation loop connects indoor set and off-premises station, comprises gas piping and liquid line; Controller is arranged on indoor set inside; The cold-producing medium detector is electrically connected with controller.
Further, above-mentioned air-conditioner also comprises: first magnetic valve is arranged in the gas piping; Second magnetic valve is arranged in the described liquid line; Wherein, described controller is electrically connected with described first magnetic valve and second magnetic valve by holding wire, and wherein, when described cold-producing medium detector detected refrigerant concentration and exceeds standard, described controller was carried out shutdown programm.
Further, the cold-producing medium detector is arranged in the indoor set, and whether refrigerant concentration exceeds standard to detect indoor set.
Further, the cold-producing medium detector is arranged in the electrical equipment box of indoor set, and the electrical equipment box comprises: the controller mainboard; Wherein, the cold-producing medium detector is arranged on the controller mainboard, comprising: detecting head is used for detecting the refrigerant concentration of indoor set; Processor is used to handle the information that detecting head detects, and sends signal when refrigerant concentration exceeds standard; First communication interface is used for sending the signal that processor sends to the controller mainboard.
Further, also be provided with second communication interface on the cold-producing medium detector, be arranged at the opposite of first communication interface, be used to reserve the controller expanded function.
Further, above-mentioned air-conditioner also comprises: alarm device, be connected with controller, and this alarm device can be buzzer, wherein, when the cold-producing medium detector detected refrigerant concentration and exceeds standard, alarm device was alarmed.
Further, above-mentioned controller comprises: memory chip, under the situation that alarm device is alarmed, preserve the warning information of alarm.
Further, above-mentioned air-conditioner also comprises: timer, be electrically connected with controller, and after second closed electromagnetic valve, pick up counting, wherein, after the time of timer timing reached the scheduled time, it was cut-off state that controller is controlled first magnetic valve.
Further, above-mentioned air-conditioner also comprises: pressure detector, be arranged on the pipeline position at the first magnetic valve place, be electrically connected with controller, detect the force value at the first magnetic valve place, wherein, after closing second magnetic valve, when force value was zero, it was cut-off state that controller is controlled first magnetic valve.
Further, all contiguous off-premises station of first magnetic valve and second magnetic valve.
Further, the cold-producing medium detector comprises the propane detector.
According to another aspect of the present invention, also provide a kind of control method of air-conditioner, the control method of this air-conditioner comprises: the refrigerant concentration that the cold-producing medium detector detects in the air-conditioner exceeds standard and notification controller; Controller is carried out scheduled operation.
Further, detect before refrigerant concentration in the air-conditioner exceeds standard at the cold-producing medium detector, said method also comprises: S1, receive the air-conditioning power-on command, whether detect the cold-producing medium detector effective, as effectively, and execution in step S2, as losing efficacy, then show failure code and/or prompting changing cold-producing medium detector and/or stop the start operation; S2: start boot program, whether the flag bit of controller detection cold-producing medium detector is effective, as effectively, to step S3; As invalid, then, arrive step S3 again with the initialization of cold-producing medium detector; S3: whether the refrigerant concentration that the cold-producing medium detector detects in the air-conditioner exceeds standard.
Further, receiving the air-conditioning power-on command, detect the cold-producing medium detector whether effectively before, also comprise: whether detect in the memory chip of air-conditioner whether warning information is arranged, if any, then shutdown, as do not have, it is effective then to detect the cold-producing medium detector.
Further, scheduled operation comprises one of following or a plurality of combination arbitrarily: warning message is alarmed and preserved to alarm device; Show failure code; And the control air-conditioner is carried out shutdown programm.
Further, the control air-conditioner is carried out shutdown programm and is comprised: S41: judge the running status of air-conditioner, and refrigerating operaton in this way, execution in step S42 then, heating operation in this way then transfers refrigerating operaton execution in step S42 after first scheduled time to; S42: controller at first cuts out the liquid line of the off-premises station of described air-conditioner, closes the gas piping of described off-premises station at interval after second scheduled time, at interval close compressor after the 3rd scheduled time.
Because adopt air-conditioner: indoor set with following structure; Off-premises station; Refrigerant circulation loop connects indoor set and off-premises station, comprises gas piping and liquid line; Controller is arranged on indoor set inside; The cold-producing medium detector is electrically connected with controller.So the invention solves when when operation of air conditioner, leakage of refrigerant occurring, in time find dangerous situation and inform the user, avoid contingent danger.Simultaneously, can solve the often residual cold-producing medium problem of indoor machine of air-conditioner, and then reach the effect of finding in time that in the running of air conditioner cold-producing medium leaks and effectively handles.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the system architecture schematic diagram according to the air-conditioner of the embodiment of the invention;
Fig. 2 is the schematic diagram according to the electrical equipment box of the air-conditioner of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the cold-producing medium detector of the embodiment of the invention;
Fig. 4 is the flow chart according to the control method of the air-conditioner of the embodiment of the invention;
Fig. 5 is the flow chart according to the control method of the preferred air-conditioner of the embodiment of the invention;
Fig. 6 is a flow chart of carrying out the control method of shutdown programm according to air-conditioner of the present invention.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 is the system architecture schematic diagram according to the air-conditioner of the embodiment of the invention.
As shown in Figure 1, this air-conditioner can comprise: indoor set 10; Off-premises station 40; Refrigerant circulation loop connects indoor set 10 and off-premises station 40, comprises gas piping and liquid line; Controller is arranged on described indoor set 10 inside; The cold-producing medium detector is electrically connected with described controller.
Wherein, the cold-producing medium detector exists when exceeding standard detecting cold-producing medium, and controller is carried out predetermined operation.This scheduled operation can comprise one of following or a plurality of combination arbitrarily: warning message is alarmed and preserved to alarm device, for example, can alarm and preserve warning information for the control alarm device; Show failure code, for example, display unit or display screen on the control air-conditioner show failure code; And the control air-conditioner is carried out shutdown programm.Thereby can improve the security of air-conditioner.
Above-mentioned air-conditioner can also comprise: first magnetic valve 43 is arranged in the gas piping; Second magnetic valve 431 is arranged in the liquid line; Controller is electrically connected with first magnetic valve 43 and second magnetic valve 431; The cold-producing medium detector is electrically connected with controller, and wherein, when the cold-producing medium detector detected refrigerant concentration and exceeds standard, controller at first controlled second magnetic valve 431 and cuts out, and controls first magnetic valve 43 then and closes.
In the above-described embodiments, by the cold-producing medium detector is set in the air-conditioner, and when the cold-producing medium detector detects refrigerant concentration and exceeds standard, controller at first controls second magnetic valve 431 and cuts out, control first magnetic valve 43 then and close, can reduce or prevent the residual cold-producing medium of air conditioner room unit and then improve the air-conditioner security.
Above-mentioned cold-producing medium detector can be arranged at whether refrigerant concentration exceeds standard to detect indoor set in the indoor set.
In addition, in Fig. 1, air-conditioner can also comprise: tracheae tube connector 20, liquid pipe connected pipe 30, off-premises station 40, big valve 41, minor valve 42, first magnetic valve 43, second magnetic valve 431, assisted capillary 44, check valve 45, capillary 46, outdoor heat exchanger 47, compressor 48 and cross valve 49.
In split type room air conditioner, indoor set can dock the formation loop by tube connector with off-premises station, also the big minor valve or the snap joint that can be provided for taking at off-premises station.With big valve 41 that tracheae tube connector 20 links to each other before first magnetic valve 43 is set, and before the minor valve 42 that liquid pipe connected pipe 30 links to each other second magnetic valve 431 is set.The closing sequence of two magnetic valves of control when air-conditioner shuts down, cut off the path of cold-producing medium earlier from off-premises station toward indoor set, the path that keeps indoor refrigerant flow direction outside simultaneously, treat that indoor cold-producing medium flows into behind the outside inside and outside another path that is communicated with of close chamber again, all is enclosed in the outside with cold-producing medium.
Above-mentioned cold-producing medium detector can adopt the propane detector, below is that example is described with the propane detector.
The propane detector can be arranged in the indoor set electrical equipment box, and the propane detector is electrically connected with the indoor set controller.Controller can also be electrically connected with alarm device, for example buzzer simultaneously.
Fig. 2 is the schematic diagram according to the electrical equipment box of the air-conditioner of the embodiment of the invention.
Preferably, above-mentioned cold-producing medium detector is arranged in the indoor set 10.
For example, the cold-producing medium detector is arranged in the electrical equipment box 11 of indoor set 10, and electrical equipment box 11 comprises: controller mainboard 12; Wherein, cold-producing medium detector 13 is arranged on the controller mainboard 12, comprising: detecting head 131 is used for detecting the refrigerant concentration of indoor set 10; Processor 132 is used to handle the information that detecting head 131 detects, and sends signal when refrigerant concentration exceeds standard; First communication interface 133 can be five a cores row pin, is used for sending the signal that processor 132 sends to controller mainboard 12.
Fig. 3 is the schematic diagram according to the cold-producing medium detector of the embodiment of the invention.
Preferably, as shown in Figure 3, also being provided with second on the cold-producing medium detector and passing communication interface 134, can be seven cores row pin, is arranged at the opposite of first communication interface 133, is used to reserve the controller expanded function.
Can adopt following assembly relation: probe 13 is by corresponding communication interface grafting on the row of five cores on it pin 133 and the controller mainboard 12, on probe 13, also be provided with seven cores row pin 134, corresponding communication interface grafting on seven cores rows pin 134 and the controller mainboard 12, can guarantee to pop one's head in and 13 can instead not insert, fixed.
By using above-mentioned probe, can monitor refrigerant concentration in the electrical equipment box after the start in real time, when concentration over-standard, probe can send alarm signal to the controller mainboard, implement a series of measures such as warning and startup shutdown programm again by the processing of controller mainboard, prevent that secondary refrigerant leakage is too much, the sparking electrical equipment accident of blasting is met in diffusion in the electrical equipment box, improves security.
Preferably, above-mentioned air-conditioner also comprises: alarm device, be connected with controller, and wherein, when the cold-producing medium detector detected refrigerant concentration and exceeds standard, alarm device was alarmed.
By first communication interface, for example 5 cores row pin is connected, signal is respectively 5V, GND (ground connection), warning, state, inefficacy between propane detector and the indoor set controller.For being convenient for changing and secure fixation, increase by second communication interface on the opposite of 5 cores row pin, for example 7 cores row pin is used for function and reserves, and can play that counnter attack is inserted, is convenient for changing, the effect of fixation.
As shown in Figure 1, indoor set 10 is connected to form loop with off-premises station 40 by tracheae tube connector 20 and liquid pipe connected pipe 30, be provided with the big valve 41 and the minor valve 42 that are used to take on the off-premises station, wherein big valve 41 is connected with tracheae tube connector 20 1 ends, and minor valve 42 is connected with liquid pipe connected pipe 30 1 ends.Before big valve 41, first magnetic valve 43 is being set, and second magnetic valve 431 is being set before the minor valve 42.The closing sequence of two magnetic valves of control all is enclosed in the outside with cold-producing medium when air-conditioner shuts down.
Above-mentioned controller can also comprise: memory chip, under the situation that alarm device is alarmed, preserve the warning information of alarm.
Above-mentioned controller can also comprise: timer, be electrically connected with controller, and after cutting out, second magnetic valve 431 picks up counting, and wherein, after the time of timer timing reached the scheduled time, controller was controlled first magnetic valve 43 and is cut-off state.
Above-mentioned controller can also comprise: pressure detector, be arranged on the pipeline position at first magnetic valve, 43 places, be electrically connected with controller, detect the force value at first magnetic valve, 43 places, wherein, after second magnetic valve 431 cut out, when force value was zero, controller was controlled first magnetic valve 43 and is cut-off state.
By on first stop valve 43, increasing a pressure-detecting device.
Under the refrigerating state, air-conditioner receives off signal, and the fluorine schema code show is received at air-conditioning display screen place, controls second magnetic valve 431 and closes, and treats that it is 0 that pressure-detecting device on first magnetic valve 43 detects pressure, then controls first stop valve 43 and closes.
Heat under the state, air-conditioner receives off signal, air-conditioning display screen place shows receives the fluorine schema code, control air-conditioning transformation of ownership cold operation, then close second magnetic valve 431, treat that it is 0 that pressure-detecting device on first magnetic valve 43 detects pressure, then control first magnetic valve 43 and close, last complete machine shutdown (the same refrigerating state of the control mode behind the transformation of ownership cold operation).
Preferably, all contiguous off-premises station 40 of first magnetic valve 43 and second magnetic valve 431.
Fig. 4 is the flow chart according to the control method of the air-conditioner of first embodiment of the invention.
As shown in Figure 4, this method may further comprise the steps:
Step S402, the refrigerant concentration that the cold-producing medium detector detects in the air-conditioner exceeds standard.For example, can adopt the cold-producing medium detector among the above-mentioned air-conditioner embodiment, for example the propane detector detects.
Step S404, controller is carried out predetermined operation.This scheduled operation can comprise one of following or a plurality of combination arbitrarily: warning message is alarmed and preserved to alarm device; Show failure code; And the control air-conditioner is carried out shutdown programm.Thereby can improve the security of air-conditioner.
For example, can be by the structure among the above-mentioned air-conditioner embodiment, utilize the order of control liquid line and gas piping to reduce or prevent cold-producing medium residual at indoor set.
Preferably, after the refrigerant concentration in detecting air-conditioner exceeded standard, said method also comprised: report to the police, thereby make the user can understand the unusual condition of air-conditioner in time, simultaneously, can send alarm signal to controller; Controller is preserved the warning message of alarm signal.
And preferably, when air-conditioner was started shooting once more, controller was reported to the police according to warning message; Controller stops the boot program of air-conditioner.By this embodiment, safety problem takes place in the leakage owing to cold-producing medium in the time of can preventing to start shooting once more.
Preferably, the cold-producing medium detector detect that refrigerant concentration in the air-conditioner exceeds standard and notification controller before, said method is further comprising the steps of:
S1 receives the air-conditioning power-on command, and whether detect the cold-producing medium detector effective, and as effectively, execution in step S2 as losing efficacy, then shows failure code and/or prompting changing cold-producing medium detector and/or stops the start operation;
S2: start boot program, whether the flag bit of controller detection cold-producing medium detector is effective, as effectively, to step S3; As invalid, then, arrive step S3 again with the initialization of cold-producing medium detector;
S3: whether the refrigerant concentration that the cold-producing medium detector detects in the air-conditioner exceeds standard.
Preferably, receiving the air-conditioning power-on command, detect the cold-producing medium detector whether effectively before, said method also comprises: in the memory chip of detection air-conditioner whether warning information is arranged, if any, then carry out power-off operation, as do not have, whether then detect the cold-producing medium detector effective.By this method, can prevent that cold-producing medium moves once more under the situation that the fault that causes cold-producing medium to leak does not have to solve.
Preferably, above-mentioned scheduled operation can comprise one of following or a plurality of combination arbitrarily: warning message is alarmed and preserved to alarm device; Show failure code; And the control air-conditioner is carried out shutdown programm.Wherein, can allow the user understand the cold-producing medium leakage problem in time by alarming.
Preferably, control air-conditioner execution shutdown programm may further comprise the steps:
S41: judge the running status of air-conditioner, refrigerating operaton in this way, execution in step S42 then, heating operation in this way then transfers refrigerating operaton execution in step S42 after first scheduled time to;
S42: controller at first cuts out the liquid line of the off-premises station of air-conditioner, closes the gas piping of off-premises station at interval after second scheduled time, at interval close compressor after the 3rd scheduled time.
By controlling the process of above-mentioned shutdown, can be so that in the process of shutdown, cold-producing medium be stored in outdoor pusher side, thereby has prevented to have improved security at the residual cold-producing medium of indoor pusher side.
Fig. 5 is the flow chart according to the control method of the preferred air-conditioner of the embodiment of the invention.
As shown in Figure 5, this method may further comprise the steps:
Controller is receiving under the situation of starting-up signal, judges whether store the warning byte in the controller.In judged result is under the situation that is, alarm device is reported to the police, and makes display board show failure code.Stop boot program then.
In judged result is under the situation not, continues to detect the cold-producing medium detector, that is whether, it is effective to pop one's head in.
If probe lost efficacy, the demonstration failure code is popped one's head in prompting changing.Stop boot program then.
If probe effectively, starts boot program, and continue to judge whether the state flag bit of probe is effective.
If the state flag bit of probe is invalid, then make the probe initialization.
If the state flag bit of probe is effective, then detects the concentration of refrigerant (cold-producing medium), and judge whether concentration exceeds standard.
Under the situation of refrigerant concentration over-standard, the processor of cold-producing medium detector is provided alarm signal and is given controller IC.Carry out one of following steps or a plurality of combination arbitrarily then:
Buzzer warning air-conditioning display board shows failure code;
The memory chip of warning byte writing controller; And
Start shutdown programm.When carrying out shutdown programm, can adopt the above-mentioned method of mentioning to carry out and shut down or shut down according to the described method of following Fig. 6.Thereby by the shutdown order of the different valves of control, make and reduce or prevent cold-producing medium residual at indoor set, perhaps as much as possible all be recovered in outdoor pusher side.
Process ends.
Fig. 6 is a flow chart of carrying out the control method of shutdown programm according to air-conditioner of the present invention.
As shown in Figure 6, this method may further comprise the steps:
Step 1, controller receives off signal.
Step 2, controller is judged the running status of air-conditioner;
Step 3, controller judge whether air-conditioner is in refrigeration mode.In judged result is under the situation that is, execution in step 4 is under the situation not in judged result, execution in step 5.
Step 4, controller are at first controlled second magnetic valve 431 and are closed.Execution in step 6 then.
Step 5 is at air-conditioner under the situation of heating mode, and after heating mode was transferred to refrigeration mode and moves one section practice, execution in step 4 then.
Step 6, delay scheduled time after second magnetic valve 431 cuts out.
Step 7 is controlled first magnetic valve 43 and is closed, and arrives step 8 after delay a period of time.Exist under the situation of pressure detector, after second magnetic valve 431 cuts out, also can be by detecting the outer pressure of first magnetic valve 43, can be so that be under zero the situation in the inlet pressure of off-premises station, carry out this step again, thereby make cold-producing medium all be retained in outdoor pusher side.Improved security greatly.
Step 8, shutdown finishes.
No matter be in refrigeration mode or heating mode, when air-conditioner received starting-up signal, first magnetic valve 43 and second magnetic valve 431 can be opened (for example, than compressor 20s unlatching early) simultaneously with the indoor set blower fan, enter normal operating conditions then.
Under the refrigerating state, air-conditioner receives off signal or propane detector and detects refrigerant concentration and exceed standard, the starting of air conditioner shutdown programm, controlling second magnetic valve 431 closes, cut-out off-premises station cold-producing medium enters the passage of indoor set, and indoor cold-producing medium still can reclaim into off-premises station through big valve simultaneously, and the process t1 time (specifically decides according to the type refrigerating capacity is different, for example, to the 1P machine time about 10 seconds; 1.5P the about 12s of air-conditioning; More than 2P reaches, about 15s), almost all cold-producing mediums all enter off-premises station, close first magnetic valve 43 this moment again, and after the time, air-conditioner is controlled compressor shutdown again through t2, thus the complete machine shutdown.
Heat under the state, air-conditioner receives off signal, air-conditioning display screen place shows receives the fluorine schema code, wind deflector is horizontal air supply position, the indoor set blower fan is out of service, and control air-conditioning transformation of ownership cold operation is then closed second magnetic valve 431, close first magnetic valve 43 through certain hour, last complete machine shutdown (the same refrigerating state of the control mode behind the transformation of ownership cold operation).Perhaps propane detector detection refrigerant concentration exceeds standard, alarm equipment alarm, air-conditioning display screen place shows failure code, and wind deflector is horizontal air supply position, and indoor set continues operation (preferably high wind shelves operation), control air-conditioning transformation of ownership cold operation t3 is after the time, then close second magnetic valve 431, the process t1 time is closed first magnetic valve 43, behind process t2, last complete machine shutdown stops compressor and indoor set blower fan (the same refrigerating state of the control mode behind the transformation of ownership cold operation).
When the propane detector had detected leakage of refrigerant, the indoor apparatus of air conditioner controller increased this fault power-failure memory function, and this function is irrecoverable, and available remote controller Macintosh is removed fault.
Wherein, during air-conditioner was in receipts fluorine pattern, remote controller can not be carried out the start operation.
As can be seen from the above description, the above embodiments of the present invention can reduce or and then prevent the residual cold-producing medium of indoor pusher side, and then the security that improves air-conditioner well.
By adopting above-mentioned scheme, during the air-conditioner shutdown, can reclaim the indoor refrigerant, can be with at least 95% refrigerant-recovery to the outside, the residual cold-producing medium in indoor was not very little when air-conditioner was not worked, thereby reached the purpose of expectation.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. an air-conditioner is characterized in that, comprising:
Indoor set (10);
Off-premises station (40);
Refrigerant circulation loop connects described indoor set (10) and described off-premises station (40), comprises gas piping and liquid line;
Controller is arranged on described indoor set (10) inside;
The cold-producing medium detector is electrically connected with described controller.
2. air-conditioner according to claim 1 is characterized in that, also comprises:
First magnetic valve (43) is arranged in the described gas piping;
Second magnetic valve (431) is arranged in the described liquid line;
Wherein, described controller is electrically connected with described first magnetic valve (43) and second magnetic valve (431) by holding wire, and wherein, when described cold-producing medium detector detected refrigerant concentration and exceeds standard, described controller was carried out shutdown programm.
3. air-conditioner according to claim 2 is characterized in that, described cold-producing medium detector is arranged in the electrical equipment box (11) of described indoor set (10), and described electrical equipment box (11) comprising:
Controller mainboard (12);
Wherein, described cold-producing medium detector is arranged on the described controller mainboard (12), comprising:
Detecting head (131) is used for detecting the refrigerant concentration of described indoor set (10);
Processor (132) is used to handle the information that described detecting head (131) detects, and sends signal when described refrigerant concentration exceeds standard;
First communication interface (133) is used for sending the signal that described processor (132) sends to described controller mainboard (12).
4. air-conditioner according to claim 3 is characterized in that, also is provided with second communication interface (134) on the described cold-producing medium detector, is arranged at the opposite of described first communication interface (133), is used to reserve the controller expanded function.
5. air-conditioner according to claim 1 is characterized in that, also comprises: alarm device, be connected with described controller,
Wherein, when described cold-producing medium detector detected refrigerant concentration and exceeds standard, described alarm device was alarmed.
6. air-conditioner according to claim 5 is characterized in that, described controller comprises: memory chip, under the situation that described alarm device is alarmed, preserve the warning information of described alarm.
7. air-conditioner according to claim 1 is characterized in that, also comprises:
Timer is electrically connected with described controller, after cutting out, described second magnetic valve (431) picks up counting, wherein,
After the time of described timer timing reached the scheduled time, described controller was controlled described first magnetic valve (43) and is cut-off state.
8. air-conditioner according to claim 1 is characterized in that, also comprises:
Pressure detector is arranged on the pipeline position at first magnetic valve (43) place, is electrically connected with described controller, detects the force value that described first magnetic valve (43) is located,
Wherein, after described second magnetic valve (431) cut out, when described force value was zero, described controller was controlled described first magnetic valve (43) and is cut-off state.
9. according to each described air-conditioner in the claim 1 to 8, it is characterized in that all contiguous described off-premises station (40) of described first magnetic valve (43) and described second magnetic valve (431).
10. according to each described air-conditioner in the claim 1 to 8, it is characterized in that described cold-producing medium detector comprises the propane detector.
11. the control method of an air-conditioner is characterized in that, may further comprise the steps:
The refrigerant concentration that the cold-producing medium detector detects in the air-conditioner exceeds standard and notification controller;
Described controller is carried out scheduled operation.
12. method according to claim 11 is characterized in that, the cold-producing medium detector detect that refrigerant concentration in the air-conditioner exceeds standard and notification controller before, described method also comprises:
S1 receives the air-conditioning power-on command, and whether detect described cold-producing medium detector effective, and as effectively, execution in step S2 as losing efficacy, then shows the described cold-producing medium detector of failure code and/or prompting changing and/or stops the start operation;
S2: start boot program, whether described controller detects the flag bit of described cold-producing medium detector effective, as effectively, to step S3; As invalid, then, arrive described step S3 again with the initialization of described cold-producing medium detector;
S3: whether the refrigerant concentration that described cold-producing medium detector detects in the described air-conditioner exceeds standard.
13. method according to claim 11, it is characterized in that, receiving the air-conditioning power-on command, detect described cold-producing medium detector whether effectively before, also comprise: detect in the memory chip of described air-conditioner whether warning information is arranged, if any, then carry out power-off operation, as do not have, whether then detect described cold-producing medium detector effective.
14. method according to claim 11 is characterized in that, described scheduled operation comprises one of following or a plurality of combination arbitrarily:
Warning message is alarmed and preserved to alarm device;
Show failure code; And
Control described air-conditioner and carry out shutdown programm.
15. method according to claim 14 is characterized in that, controls described air-conditioner execution shutdown programm and comprises:
S41: judge the running status of described air-conditioner, refrigerating operaton in this way, execution in step S42 then, heating operation then transfers refrigerating operaton to and carries out described step S42 after first scheduled time in this way;
S42: described controller at first cuts out the liquid line of the off-premises station of described air-conditioner, closes the gas piping of described off-premises station at interval after second scheduled time, at interval close compressor after the 3rd scheduled time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101801051A CN102252404A (en) | 2010-05-17 | 2010-05-17 | Air conditioner and control method thereof |
| PCT/CN2011/070164 WO2011143937A1 (en) | 2010-05-17 | 2011-01-11 | Air conditioner and method for controlling the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101801051A CN102252404A (en) | 2010-05-17 | 2010-05-17 | Air conditioner and control method thereof |
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| Publication Number | Publication Date |
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| CN102252404A true CN102252404A (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101801051A Pending CN102252404A (en) | 2010-05-17 | 2010-05-17 | Air conditioner and control method thereof |
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| Country | Link |
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| CN (1) | CN102252404A (en) |
| WO (1) | WO2011143937A1 (en) |
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| CN103196208A (en) * | 2013-04-23 | 2013-07-10 | 广东志高空调有限公司 | Method and device for searching air conditioner breakdowns |
| CN106369741A (en) * | 2016-08-26 | 2017-02-01 | 珠海格力电器股份有限公司 | Control method and device and air conditioner |
| CN107076454A (en) * | 2014-10-31 | 2017-08-18 | 大金工业株式会社 | The indoor set of air conditioner |
| WO2017215090A1 (en) * | 2016-06-14 | 2017-12-21 | 顺德职业技术学院 | Operation fault determination method for air conditioner in remote control manner |
| CN107906814A (en) * | 2017-11-06 | 2018-04-13 | 广东美的暖通设备有限公司 | Starting up's method, starting up's system, readable storage medium storing program for executing and refrigeration plant |
| CN109073259A (en) * | 2016-05-18 | 2018-12-21 | 三菱电机株式会社 | Air conditioner |
| CN111256427A (en) * | 2020-01-19 | 2020-06-09 | 新誉防务技术有限公司 | Method and system for judging refrigerant leakage of ship-based refrigeration device |
| CN111503754A (en) * | 2020-04-07 | 2020-08-07 | 海信（广东）空调有限公司 | Air conditioner outdoor unit and control method thereof |
| CN117120789A (en) * | 2021-04-27 | 2023-11-24 | 大金工业株式会社 | Air conditioning system, operation control method thereof, and operation control device for air conditioning system |
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| WO2011143937A1 (en) | 2011-11-24 |
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