CN106574798A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN106574798A CN106574798A CN201580044377.XA CN201580044377A CN106574798A CN 106574798 A CN106574798 A CN 106574798A CN 201580044377 A CN201580044377 A CN 201580044377A CN 106574798 A CN106574798 A CN 106574798A
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- China
- Prior art keywords
- control device
- heat
- frosting
- time
- air conditioner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- F24F11/41—Defrosting; Preventing freezing
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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
In heating mode, when a thermostat OFF operation is performed, the operating time period of the immediately preceding thermostat ON operation is checked. If this operating time period is equal to or less than a prescribed time period, the number of thermostat ON operations is counted. The number of thermostat ON operations is counted each time that thermostat ON and thermostat OFF operations are repeated. When the number of operations reaches a prescribed number, the system enters a forced defrost mode. When thermostat ON and thermostat OFF operations are repeated in a short cycle, defrosting of the outdoor heat exchanger is carried out. Thus, by forcing the system into defrost mode under conditions in which thermostat ON and thermostat OFF operations are repeated in a short cycle, the adverse effect of a failure to defrost the outdoor heat exchanger under such conditions is eliminated.
Description
Technical field
The present invention relates to the sky of defrosting operating is carried out when detecting frosting on outdoor heat converter when heating operation is carried out
Controlled atmosphere section machine.
Background technology
In the air conditioner with indoor set and off-premises station, in heating operation during outdoor heat converter frosting, meeting
Baneful influence is brought to heat exchange.Here, the temperature by detecting outdoor heat converter, carries out the frosting inspection of outdoor heat converter
Survey.When detecting frosting, defrosting operating is carried out.
But, starting in heating operation, after compressor action, refrigerant cycle forms freeze cycle.In driven compressor
It is initial, due to the suction pressure of compressor it is big, so outdoor heat converter quick refrigeration.Therefore, according to outdoor heat converter
Temperature when judging whether to defrosting operating, each action of compressor all can error detection be frosting, and perform defrosting operating.For
Avoid the unnecessary operating, patent documentation 1 describe setting make from compressor run to the stipulated time during do not carry out
The shielding time of defrosting operating.
Prior art literature
Patent documentation 1：Japanese Laid-Open Patent Publication is flat No. 10-267475
From after compressor action, defrosting operating is not carried out during the shielding time.But, if room temperature reaches setting temperature
Degree, then enter to exercise the thermal cutoff of compressor stopping, if room temperature declines after a period of time, then the heat for entering to exercise compressor action connects
It is logical.When being connected with heat with of short duration circulating repetition thermal cutoff, due to being set with the shielding time, so not carrying out defrosting operating.Cause
This, even if frosting on outdoor heat converter, can not defrost, cause outdoor heat converter to be frozen in, so as to be heated
Operating.
The content of the invention
In view of the above problems, it is an object of the invention to provide thermal cutoff can carry out room when connecting and repeat with short cycles with heat
The air conditioner of the defrosting of outer heat-exchanger.
The air conditioner of the present invention, the frosting detection for possessing the frosting detected in heating operation on outdoor heat converter
Portion, and the control device of defrosting operating is carried out when frosting is detected, what control device only specified after heating operation starts
In the shielding time, it is invalid that the detection of frosting is set to, and after the shielding time, the detection of frosting is set to effectively.And, control
Device in heating operation the thermal cutoff and the compressor action for making stopping for stopping compressor it is hot connect repeat when,
Pressure carries out defrosting operating.
As, when thermal cutoff is repeated till the shielding time with hot connection, the detection of frosting is deactivated, so not
Carry out defrosting operating.In above-mentioned situation, pressure carries out defrosting operating.
Control device carries out defrosting operating, the movement time that the heat is connected when the heat for having carried out stipulated number is connected
To be set in below the shielding the stipulated time more than time.That is, when thermal cutoff starts, control device confirms that previous heat is connected
Movement time whether below the stipulated time, counted when below the stipulated time, when counting reaches stipulated number, carried out
Defrosting operating.According to the movement time that heat is connected, the repetition that the thermal cutoff of short cycles is connected with heat is judged.
According to the present invention, in the case where thermal cutoff is connected with heat with short cycles repetition, by forcing to carry out defrosting fortune
Turn, can eliminate it is above-mentioned in the case of the drawbacks of can not carry out the defrosting of outdoor heat converter.
Description of the drawings
Fig. 1 is the brief configuration figure of the freeze cycle of the air conditioner of the present invention.
Fig. 2 is the control block diagram of air conditioner.
Fig. 3 is flow chart when carrying out defrosting operating of the 1st embodiment.
Fig. 4 is flow chart when carrying out defrosting operating of the 2nd embodiment.
Fig. 5 is flow chart when carrying out defrosting operating of the 3rd embodiment.
Fig. 6 is flow chart when carrying out defrosting operating of the 4th embodiment.
Specific embodiment
(the 1st embodiment)
Fig. 1 illustrates the air conditioner of the 1st embodiment.In the air conditioner of heat-pump-type, off-premises station 1 and indoor set
2 pass through pipe arrangement and distribution connection.Off-premises station 1 possesses compressor 3, cross valve 4, outdoor heat converter 5, expansion valve 6, outdoor fan
7.Indoor set 2 possesses indoor heat converter 8 and indoor fan 9.Compressor 3, cross valve 4, outdoor heat converter 5, expansion valve 6,
Indoor heat converter 8 is connected by pipe arrangement and forms refrigerant loop.In order to connect the pipe arrangement of the pipe arrangement and off-premises station 1 of indoor set 2,
Two-port valve 10 and three-way valve 11 are set on off-premises station.The pipe arrangement of connection expansion valve 6 and indoor heat converter 8 is provided with two-port valve
10, the pipe arrangement for connecting cross valve 4 and indoor heat converter 8 is provided with three-way valve 11.
When compressor 3 drives, cold-producing medium is circulated in refrigerant loop.Followed in refrigerant loop by making cold-producing medium
Ring, forms the freeze cycle for heating or freezing.In kind of refrigeration cycle, cold-producing medium is handed over according to compressor 3, cross valve 4, outdoor heat
Parallel operation 5, expansion valve 6, the sequential loop of indoor heat converter 8.Heat circulation in, cold-producing medium according to compressor 3, cross valve 4,
Indoor heat converter 8, expansion valve 6, the sequential loop of outdoor heat converter 5.
And, as shown in Fig. 2 air conditioner such as possesses by controlling freeze cycle to carry out freezing, heat, dehumidify at the sky
The control device 12 that allocation and transportation turn.Additionally, air conditioner possesses room temperature detector 13, external air temperature detector 14, detection
The outdoor heat converter temperature detector 15 of the temperature of outdoor heat converter 5, the Indoor Thermal of the temperature of detection indoor heat converter 8
Exchanger temperature detector 16.Temperature sensor of each temperature detector 13～16 using critesistor etc..
Control device 12, is distinguished according to the temperature of the detection of each temperature detector 13～16 according to the operation mode being instructed to
The rotating speed (operating frequency) of control compressor 3, the aperture of expansion valve 6, the rotating speed of outdoor fan 7, the rotating speed of indoor fan 9.Separately
Outward, control device 12 is made up of the outdoor control unit arranged in the room control unit and off-premises station 1 that arrange in indoor set 2.Room
Interior control unit and outdoor control unit are connected in the way of it can communicate with one another, and both jointly control the dynamic of indoor set 2 and off-premises station 1
Make.The detection signal unification being input into from multiple temperature detectors 14,15 is sent by outdoor control unit to room control unit, indoor control
The temperature information that portion's management processed is detected.
Here, when carrying out heating operation, the temperature of outdoor heat converter 5 is less than external air temperature, outdoor heat converter 5
Surface frosting.Here, in order to detect the frosting on outdoor heat converter 5, by external air temperature detector 14 and outdoor heat
Exchanger temperature detector 15 constitutes frosting test section.Frosting test section carries out the detection action of frosting in operation of air conditioner.When
When the difference of the temperature of external air temperature and outdoor heat converter 5 reaches more than set point of temperature, frosting test section is detected as outdoor
Frosting on heat exchanger 5.
Output of the control device 12 according to the frosting test section, judges whether to be adapted to defrosting operating.That is, control device 12
When the difference of external air temperature and the temperature of outdoor heat converter 5 is more than setting, judge consistent with defrosting condition, when outer
When the difference of the temperature of portion's air themperature and outdoor heat converter 5 is less than setting, judge inconsistent with defrosting condition.When detection knot
When fruit is consistent with defrosting condition, control device 12 carries out defrosting operating.As defrosting operating, inverse defrosting is carried out.Heating operation
In, stop compressor, switch to cooling operation.In addition, the detection of frosting, can enter according to the temperature of outdoor heat converter 5
OK.The temperature of outdoor heat converter 5 reach the freezing point under set point of temperature below when, judgement met defrosting condition.
When 3 action of compressor is made by operation start, under action starts the temperature of initial outdoor heat converter 5 significantly
Drop.Therefore, although non-frosting on outdoor heat converter 5, testing result is also consistent with defrosting condition.Here, only from heating fortune
The stipulated time for turning to start was set as the detection of the frosting invalid shielding time.Control device 12 is being covered from operation start process
During till the shield time, defrosting operating is not carried out.After the shielding time, output of the control device 12 according to frosting test section,
Judge whether to need to carry out defrosting operating.
Additionally, in heating operation, when room temperature reaches design temperature, entering to exercise the thermal cutoff of the stopping of compressor 3.For a period of time
Afterwards, after room temperature declines, enter to exercise the heat connection of 3 action of compressor.When heat is connected, control device 12 is also by from the dynamic of compressor 3
Work start to the shielding time during frosting detection be set to it is invalid.After the shielding time, control device 12 is by the inspection of frosting
Survey is set to effectively.
But, during the shielding time, heat is connected in the case of repeating, even if outdoor heat exchange during this period
Frosting on device 5, does not carry out defrosting operating yet.Heat is connected when being continued with short cycles, and the frost tied on outdoor heat converter 5 increases,
Outdoor heat converter 5 can be frozen in.Here, control device 12 thermal cutoff with heat connects repeat when, force defrosted
Operating.
Control device 12 when thermal cutoff starts, confirm movement time that previous heat connects whether the stipulated time with
Under.Stipulated time is set as shielding more than the time.For example, when the shielding time is 7 minutes, it is stipulated that the time is 12 minutes.Control dress
Put 12 heat below the stipulated time to connect when having carried out stipulated number, carry out defrosting operating.
As shown in figure 3, control device 12 confirms whether room temperature meets hot on-condition (S1) after heating operation starts.Heat connects
Gating condition is set as situation of the room temperature less than design temperature.When room temperature is less than design temperature and meets hot on-condition, heating
3 beginning action (S2) of compressor is made in circulation.In addition, when room temperature is more than design temperature, compressor 3 keeps stopping.Now, room
Internal fan 9 is driven, and carries out air-supply operating.
Control device 12 confirms whether room temperature meets thermal cutoff condition (S3) after hot connection is carried out.Thermal cutoff condition sets
It is set to situation of the room temperature more than design temperature.When room temperature is less than design temperature and does not meet thermal cutoff condition, control device 12
The duration of runs that confirmation starts from heating operation.Control device 12 confirms whether the duration of runs have passed through the stipulated time (7 minutes)
(S4).During this period, frosting detection is deactivated.The duration of runs, frosting detection was set to by control device 12 after the shielding time
Effectively, start to detect (S5).
In heating operation, control device 12 is by frosting detection to be set to effectively, whether confirm testing result and remove ice-lolly
Part is consistent (S6).When testing result is consistent with defrosting condition, control device 12 carries out normal defrosting operating (S7).Additionally, making
The count resets of the action frequency that aftermentioned heat is connected.
When room temperature meets thermal cutoff condition, control device 12 makes compressor 3 stop (S8).And, control device 12 confirms
The movement time (S9) that heat is connected.Movement time the stipulated time (12 minutes) below when, control device 12 by heat connect it is dynamic
Make the counting+1 of number of times, and storage is counted to memorizer (S10) described.Whether the counting of the confirmation action frequency of control device 12
Reach stipulated number, such as 6 times (S11).
When the movement time of heat connection is longer than stipulated time, or when counting fewer than stipulated number, control device 12 is being protected
In the case of holding thermal cutoff, confirm whether room temperature meets hot on-condition (S1).
Decline room temperature because of thermal cutoff, so as to meet during hot on-condition, control device 12 makes 3 action of compressor
(S2).By heat connection, room temperature is made to increase.When room temperature is higher than design temperature, thermal cutoff condition (S3), compressor 3 are met
Stop (S8).Control device 12 confirms the movement time (S9) that previous heat is connected.When movement time is (12 points of stipulated time
Clock) below when, control device 12 by heat connect action frequency counting+1 (S10), and confirm count whether reach regulation time
Number (S11).
Even if in addition, below the stipulated time, also having more than the situation of shielding time the movement time that heat is connected.But,
Heating operation start rear thermal cutoff with heat connects repeat when, control device 12 by frosting detect be set to it is invalid.Therefore, heat connects
Logical movement time does not also judge whether to need to carry out defrosting operating even more than shielding time, control device 12.But, work as heat
When the movement time of connection exceeds schedule time, frosting detection is set to effectively, judge whether that needs are removed by control device 12
Frost operating.When the testing result of frosting test section is consistent with defrosting condition, control device 12 carries out normal defrosting operating.This
When, counting is reset.When need not carry out defrosting operating, continue heat and connect, it is disconnected that control device 12 confirms whether room temperature meets heat
Open condition.Now, count and do not reset.
When counting reaches stipulated number, control device 12 is forced to start defrosting operating (S12).Additionally, control device 12 will
The count resets of the action frequency that heat is connected are 0." fine to defrost " is carried out in the defrosting operating.That is, performing makes compressor 3
Rotating speed improve, make indoor fan 9 stop heating circulation.The temperature of indoor heat converter 8 reaches set point of temperature, such as 54 DEG C
When, from heating cyclic switching to kind of refrigeration cycle.So, heat is stored in indoor heat converter 9, after being switched to kind of refrigeration cycle,
As the cold-producing medium of high temperature flows to outdoor heat converter 5, it is possible to guaranteeing quickly to be defrosted.After defrosting operating terminates,
Control device 12 is switched to and heats circulation, proceeds heating operation.
So, when thermal cutoff is connected with heat to be repeated with short cycles, due to forcing to carry out defrosting operating, therefore can disappear
Even if except the state of affairs that frosting on outdoor heat converter 5 can not defrost.Particularly, when external air temperature is relatively low, with low
In the case that load carries out heating operation, thermal cutoff is connected with heat and is repeated with short cycles mostly.In this case, although depositing
The frosting on outdoor heat converter 5 and the danger that makes outdoor heat converter 5 be frozen in, but ensuring that carries out outdoor heat converter 5
Defrosting, therefore can make heating operation stably continue.
(the 2nd embodiment)
According to external air temperature, the circulation that heat is connected is different.External air temperature is lower, and the efficiency of heating operation more goes up
Do not go, so after room temperature declines, room temperature reaches design temperature and needs the time.As a result, the movement time that heat is connected is elongated.Instead
It, when external air temperature is less low, the movement time that heat is connected shortens.Here, air conditioner according to extraneous air
The temperature corresponding stipulated time, the action frequency that heat is connected is counted, judges whether to need to carry out frosting operating.Separately
Outward, other structures are identical with the 1st embodiment.
Control device 12 determines the stipulated time according to external air temperature.When external air temperature is higher, set shorter
Stipulated time, when external air temperature is relatively low, set the longer stipulated time.For example, external air temperature is more than -5 DEG C
When, it is set in 7 minutes, when external air temperature is less than -5 DEG C, is set in 12 minutes.
Control device 12 monitors extraneous air temperature according to the output of external air temperature detector 14 in heating operation
Degree.As shown in figure 4, after thermal cutoff (S8) is carried out after starting from heating operation, control device 12 confirms external air temperature
(S20), and set and the external air temperature corresponding stipulated time.When external air temperature is more than -5 DEG C, control device 12
According to the shorter stipulated time (7 minutes), the movement time (S21) that previous heat is connected is confirmed.External air temperature is less than -5
DEG C when, control device 12 confirms the movement time (S22) that previous heat is connected according to the longer stipulated time (12 minutes).It is dynamic
When making the time below the stipulated time, the counting+1 (S10) that heat is connected by control device 12, and confirm count whether reach regulation
Number of times (S11).When the movement time of heat connection is longer than stipulated time, control device 12 does not carry out plus coujnt, and confirms room temperature
Whether hot on-condition (S1) is met.
When external air temperature is relatively low, if counted to the action frequency that heat is connected with the shorter stipulated time,
The movement time that heat is connected will not be counted when exceeding schedule time.So, to judge whether to need to carry out defrosting operating when
Between it is elongated, after the frost tied on outdoor heat converter 5 during this increases, reach except the state do not fallen.Here, external air temperature compared with
When low, longer time is changed to by the stipulated time, even if movement time is elongated when external air temperature is relatively low, it is also possible to
Guarantee to count, can foreshorten to carries out the time of defrosting operating.Therefore, it can carry out outdoor heat exchange in the case where frost does not increase
The defrosting of device 5.
Additionally, when external air temperature is higher, the movement time that generally heat is connected is shorter.The movement time that heat is connected extends
When, there is the probability of frosting on outdoor heat converter 5.Now, exceed schedule time movement time.Will according to external air temperature
When stipulated time is set to the shorter time, as the movement time that heat is connected exceeds schedule time, frosting detection is set as effectively.
In the case of frosting, due to detecting frosting, so can be defrosted.
(the 3rd embodiment)
In above-mentioned embodiment, thermal cutoff is connected with heat when being repeated with short cycles, and pressure carries out defrosting operating.Can
It is even if that in this case, outdoor heat converter 5 also has the situation of non-frosting.Now, it is not necessary to carry out defrosting operating.Here,
Air conditioner carries out frosting detection before compulsory defrosting operating is carried out.That is, in the heat for reaching stipulated number is connected, with
Frosting detection effective manner carries out heating operation.In addition, other structures are identical with the 1st or the 2nd embodiment.
Control device 12 exceedes regulation with movement time in the heating operation that the heat for carrying out stipulated number (6 times) is connected
The mode of time carries out hot connection.As shown in figure 5, when the counting of the action frequency of heat connection reaches 5 times (S30), control device
12 while lasting thermal cutoff, confirms whether room temperature meets hot on-condition (S31).
When meeting hot on-condition, control device 12 carries out the heat connection of the 6th time.In circulation is heated move compressor 3
Make (S32).Now, control device 12 forces the heating operation for carrying out such as 13 minutes time longer than the stipulated time.So, by
Exceed schedule time in the duration of runs, so frosting detection is set to effectively, judge whether that needs are defrosted by control device 12
Operating (S33).That is, control device 12 after defrosting operating terminates, confirm the testing result of frosting test section whether with except ice-lolly
Part is consistent (S6).When testing result is consistent with defrosting condition, control device 12 carries out the defrosting operating of " fine to defrost ", and will meter
Number resets (S12).When testing result and defrosting condition are inconsistent, control device 12 by count resets (S34), in lasting thermal cutoff
While, confirm whether room temperature meets hot on-condition (S1).
So, during thermal cutoff is connected with heat and repeated with short cycles, the detection of frosting is not carried out, but by forcibly
Judge whether to need to carry out defrosting operating, carry out defrosting operating when necessary.When non-frosting on outdoor heat converter 5, do not enter
Row defrosting operating, can prevent unnecessary defrosting operating.
(the 4th embodiment)
In above-mentioned embodiment, thermal cutoff is connected with heat when being repeated with short cycles, and the detection of frosting is deactivated.This
In, when carrying out heating operation using heat connection, if room temperature is difficult to rise, the movement time that heat is connected is elongated.Now, it is outdoor
Frosting on heat exchanger 5, the efficiency of heating operation can be deteriorated.Here, air conditioner is when the movement time that heat is connected is elongated,
By detecting that the frosting on outdoor heat converter 5 carries out defrosting operating.In addition, other structures and the 1st～the 3rd embodiment phase
Together.
Frosting detection is set to effectively by control device 12 when exceeding schedule time the movement time that heat is connected, and judgement is
It is no to need to carry out defrosting operating.As shown in fig. 6, when carrying out thermal cutoff, when control device 12 confirms the action that previous heat is connected
Between (S9).When movement time the stipulated time (12 minutes) below when, control device 12 by heat connect action frequency counting+
1 (S10), and confirm count whether reach stipulated number, such as 6 times (S11).
When the movement time of heat connection is longer than stipulated time, count resets (S40) sets frosting detection by control device 12
Effectively and to start frosting detection (S41).Control device 12 confirms whether testing result is consistent with defrosting condition (S42).Detection
As a result, when consistent with defrosting condition, control device 12 carries out normal defrosting operating (S43).Testing result is differed with defrosting condition
During cause, control device 12 confirms whether room temperature meets hot on-condition (S1).If room temperature meets hot on-condition, control device
12 carry out hot connection, in circulation is heated make 3 action of compressor (S2).
So, when heat is connected to extend, carry out frosting detection.If frosting on outdoor heat converter 5, then defrosted
Operating.Therefore, even if heat is connected and thermal cutoff repeats, when defrosting is needed, it is also possible to guarantee to carry out removing for outdoor heat converter 5
Frost.
As described above, the air conditioner of the present invention possesses the frosting detected in heating operation on outdoor heat converter 5
Frosting test section, and the control device 12 of defrosting operating is carried out when frosting is detected, control device 12 is only heating fortune
It is invalid in the shielding time specified after turning to start to be set to the detection of frosting, after the shielding time, the detection of frosting is set to
Effectively, in heating operation, the compressor 3 for repeating the thermal cutoff for stopping compressor and making stopping is moved control device 12
When the heat of work is connected, pressure carries out defrosting operating.
When being switched to thermal cutoff from heat and carrying out with short cycles, the shielding time is not utilized to carry out frosting detection.But, heat is disconnected
Open with heat connects repeated with short cycles when, by force carry out defrosting operating, during being prevented from this outdoor heat exchange
The frost tied on device increases and becomes the state of affairs that outdoor heat converter 5 is frozen in.
Control device 12 carries out defrosting operating, during the action that the heat is connected when the heat for having carried out stipulated number is connected
Between to be set in below the shielding the stipulated time more than time.So, when repeating heat connection with the time shorter than screening the time, can
To guarantee to be defrosted.
Control device 12 when thermal cutoff is started, confirm movement time that previous heat connects whether the stipulated time with
Under, counted when below the stipulated time, when counting reaches stipulated number, carried out defrosting operating.So, heat is connected
Movement time, the situation longer than the stipulated time was rejected from counting.Now, normal frosting detection and defrosting operating can be carried out, can be with
Defrosted.
Control device 12 determines the stipulated time according to external air temperature, when external air temperature is higher, when shortening regulation
Between, when external air temperature is relatively low, extend the stipulated time.So, as the movement time that heat is connected is subject to external air temperature
Impact, so by according to external air temperature determine the stipulated time, can ensure that to short cycles heat connect count,
Compulsory defrosting operating is performed as early as possible.
When control device 12 carries out the heat connection longer than the stipulated time, by count resets.So, as frosting detection has
Effect, so defrosting operating can be carried out as needed.
In addition, the invention is not restricted to above-mentioned embodiment, it is of course possible within the scope of the invention to above-mentioned embodiment
Apply various amendments and change.When in heating operation, thermal cutoff is connected with heat and is repeated, in that case it can be decided that whether carry out compulsory removing
Frost operating.That is, control device 12 judges frosting when thermal cutoff connects repetition with heat according to the testing result of frosting test section
Probability.Then, probability of the control device 12 according to frosting, decides whether to carry out compulsory defrosting operating.No
During the probability of frosting, judgement need not carry out defrosting operating.Now, the movement time that heat is connected is carried out when exceeding the shielding time
Frosting is detected.When additionally, there are the probability of frosting, judgement is necessary to carry out defrosting operating, according to above-mentioned each embodiment
Operated.
Description of reference numerals
1 off-premises station
2 indoor sets
3 compressors
4 cross valves
5 outdoor heat converters
6 expansion valves
7 outdoor fans
8 indoor heat converters
9 indoor fans
12 control devices
13 room temperature detectors
14 external air temperature detectors
15 outdoor heat converter temperature detectors
16 indoor heat converter temperature detectors
Claims (5)
1. a kind of air conditioner, possesses the frosting test section of the frosting detected in heating operation on outdoor heat converter, with
And the control device of defrosting operating is carried out when frosting is detected, during the shielding that control device only specifies after heating operation starts
In, it is invalid that the detection of frosting is set to, and after the shielding time, the detection of frosting is set to effectively, the air conditioner
It is characterised by, control device is in heating operation in the thermal cutoff for stopping compressor and the heat of the compressor action for making stopping
When connection repeats, pressure carries out defrosting operating.
2. air conditioner according to claim 1, it is characterised in that control device is connect in the heat for carrying out stipulated number
When logical, defrosting operating is carried out, the movement time that the heat is connected is to be set in below the shielding the stipulated time more than time.
3. air conditioner according to claim 1 and 2, it is characterised in that control device is confirmed when thermal cutoff starts
Whether the movement time that previous heat is connected below the stipulated time, is counted when below the stipulated time, and counting reaches rule
When determining number of times, defrosting operating is carried out.
4. the air conditioner according to any one in claims 1 to 3, it is characterised in that control device is according to outside
Air themperature determines the stipulated time, when external air temperature is higher, shortens the stipulated time, when external air temperature is relatively low, extends
Stipulated time.
5. the air conditioner according to claim 3 or 4, it is characterised in that control device carry out it is longer than stipulated time
Heat connect when, by count resets.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-210678 | 2014-10-15 | ||
| JP2014210678A JP6466682B2 (en) | 2014-10-15 | 2014-10-15 | Air conditioner |
| PCT/JP2015/078983 WO2016060145A1 (en) | 2014-10-15 | 2015-10-14 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106574798A true CN106574798A (en) | 2017-04-19 |
| CN106574798B CN106574798B (en) | 2020-02-28 |
Family
ID=55746688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580044377.XA Active CN106574798B (en) | 2014-10-15 | 2015-10-14 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3208549B1 (en) |
| JP (1) | JP6466682B2 (en) |
| CN (1) | CN106574798B (en) |
| WO (1) | WO2016060145A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631188A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN111795471A (en) * | 2020-07-14 | 2020-10-20 | 南京天加环境科技有限公司 | Anti-freezing control method for air conditioner |
| CN114151928A (en) * | 2021-11-26 | 2022-03-08 | 宁波奥克斯电气股份有限公司 | Control method and device for prolonging heating time of air conditioner and air conditioner |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6477802B2 (en) * | 2017-08-08 | 2019-03-06 | ダイキン工業株式会社 | Refrigeration equipment |
| CN110631186B (en) * | 2018-06-25 | 2021-07-23 | 重庆海尔空调器有限公司 | Defrosting control method and device for air conditioner |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032389A (en) * | 1985-08-22 | 1989-04-12 | 三菱电机株式会社 | Air-conditioning equipment |
| JPH0285629U (en) * | 1988-12-22 | 1990-07-05 | ||
| JPH03156268A (en) * | 1989-11-14 | 1991-07-04 | Fujitsu General Ltd | Air conditioner |
| CN1151507A (en) * | 1995-01-06 | 1997-06-11 | 易通公司 | Controlling defrost in refrigerated compartment |
| CN1204027A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| JP2001280666A (en) * | 2000-03-31 | 2001-10-10 | Daikin Ind Ltd | Air conditioner |
| US20070144187A1 (en) * | 2005-12-22 | 2007-06-28 | Ki Seok Lee | Defrosting method of air conditioner |
| CN102175052A (en) * | 2008-03-18 | 2011-09-07 | Lg电子株式会社 | Air conditioner and control method thereof |
| CN105143782A (en) * | 2013-07-31 | 2015-12-09 | 富士通将军股份有限公司 | Air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285629A (en) * | 1988-09-20 | 1990-03-27 | Matsushita Refrig Co Ltd | Heat pump type air conditioner |
| JP3460782B2 (en) * | 1997-03-27 | 2003-10-27 | 株式会社富士通ゼネラル | Control method of air conditioner |
| JPH10332231A (en) * | 1997-06-02 | 1998-12-15 | Mitsubishi Heavy Ind Ltd | Air conditioner and air-conditioning method |
| JP2002107014A (en) * | 2000-10-04 | 2002-04-10 | Sharp Corp | Air conditioner |
-
2014
- 2014-10-15 JP JP2014210678A patent/JP6466682B2/en active Active
-
2015
- 2015-10-14 CN CN201580044377.XA patent/CN106574798B/en active Active
- 2015-10-14 EP EP15850569.3A patent/EP3208549B1/en active Active
- 2015-10-14 WO PCT/JP2015/078983 patent/WO2016060145A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032389A (en) * | 1985-08-22 | 1989-04-12 | 三菱电机株式会社 | Air-conditioning equipment |
| JPH0285629U (en) * | 1988-12-22 | 1990-07-05 | ||
| JPH03156268A (en) * | 1989-11-14 | 1991-07-04 | Fujitsu General Ltd | Air conditioner |
| CN1151507A (en) * | 1995-01-06 | 1997-06-11 | 易通公司 | Controlling defrost in refrigerated compartment |
| CN1204027A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| JP2001280666A (en) * | 2000-03-31 | 2001-10-10 | Daikin Ind Ltd | Air conditioner |
| US20070144187A1 (en) * | 2005-12-22 | 2007-06-28 | Ki Seok Lee | Defrosting method of air conditioner |
| CN102175052A (en) * | 2008-03-18 | 2011-09-07 | Lg电子株式会社 | Air conditioner and control method thereof |
| CN105143782A (en) * | 2013-07-31 | 2015-12-09 | 富士通将军股份有限公司 | Air conditioner |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631188A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631188B (en) * | 2018-06-25 | 2021-07-30 | 重庆海尔空调器有限公司 | Defrosting control method and device for air conditioner |
| CN111795471A (en) * | 2020-07-14 | 2020-10-20 | 南京天加环境科技有限公司 | Anti-freezing control method for air conditioner |
| CN111795471B (en) * | 2020-07-14 | 2021-11-16 | 南京天加环境科技有限公司 | Anti-freezing control method for air conditioner |
| CN114151928A (en) * | 2021-11-26 | 2022-03-08 | 宁波奥克斯电气股份有限公司 | Control method and device for prolonging heating time of air conditioner and air conditioner |
| CN114151928B (en) * | 2021-11-26 | 2023-03-21 | 宁波奥克斯电气股份有限公司 | Control method and device for prolonging heating time of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3208549A1 (en) | 2017-08-23 |
| JP6466682B2 (en) | 2019-02-06 |
| JP2016080229A (en) | 2016-05-16 |
| WO2016060145A1 (en) | 2016-04-21 |
| EP3208549A4 (en) | 2017-10-11 |
| EP3208549B1 (en) | 2019-12-04 |
| CN106574798B (en) | 2020-02-28 |
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