CN104807132B - A kind of defrosting control method and device - Google Patents
A kind of defrosting control method and device Download PDFInfo
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- CN104807132B CN104807132B CN201410033895.9A CN201410033895A CN104807132B CN 104807132 B CN104807132 B CN 104807132B CN 201410033895 A CN201410033895 A CN 201410033895A CN 104807132 B CN104807132 B CN 104807132B
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Classifications
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses a kind of defrosting control method, including：Operation of air conditioner is controlled to stable state, and keeps stable state to run one section of preset time；The running current of detection outdoor fan in real time；Judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if then：Control air-conditioner set enters defrost.The present invention is controlled by the current changing rate of outdoor fan of air conditioner to defrost, carries out defrosting control by the temperature of air conditioning chamber's outer tube and the current value of outdoor fan compared to prior art, the operation more reasonable effect of simpler and defrost is more preferable.The invention also discloses a kind of defrosting control device.
Description
Technical field
The present invention relates to air conditioner controlling technology field, more specifically to a kind of defrosting control method and device.
Background technology
For heat pump air conditioner when heating, because outdoor temperature is different with humidity, the outdoor unit of air-conditioning easily goes out
The situation of existing frosting.At present, most of heat pump air conditioners use the electric current by detecting outer tube temperature and outdoor fan
Frost judges, but due to when carrying out the current detecting of outer tube temperature and outdoor fan, easily there is error, temperature, electric current are examined
Indeterminacy is true, therefore easily appearance misses defrost, defrost is not clean or has the problems such as frost does not enter defrost, and then produces to the energy
Waste and influence the comfortableness of user.
The content of the invention
In view of this, the present invention provides a kind of defrosting control method and device, is become by the electric current of outdoor fan of air conditioner
Rate, defrost is controlled so that operation is simple to operate and defrost reasonably can be controlled.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of defrosting control method, including：
Operation of air conditioner is controlled to stable state, and keeps stable state to run one section of preset time；
The running current of detection outdoor fan in real time；
Judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if then：
Control air-conditioner set enters defrost.
Preferably, before judging whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value
Also include,
Whether the running current for the outdoor fan for judging to detect in real time is less than or equal to the first pre-set current value, if then：
Judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value.
Preferably, before judging whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value
Also include,
Detect the temperature of outdoor environment and the temperature of outdoor pipe；
Judge whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the first preparatory condition；
When the running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, and the temperature of outdoor environment
When meeting the first preparatory condition with the temperature of outdoor pipe, judging the rate of change of the running current of outdoor fan under predetermined period is
It is no to be less than or equal to preset value.
Preferably, unit is controlled also to include after entering defrost：
The running current of detection outdoor fan in real time；
Judge whether the running current of the outdoor fan is more than or equal to the second pre-set current value, if then：
Control unit exits defrost.
Preferably, control unit also includes before exiting defrost：
Detect the temperature of outdoor environment and the temperature of outdoor pipe；
Judge whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the second preparatory condition；When outdoor fan
Running current is more than or equal to the second pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the second preparatory condition
When, control unit exits defrost.
A kind of defrosting control device, including：Controller, memory, comparator, current detector；Wherein：
The memory for being stored with preset time is connected with the controller, and the controller controls operation of air conditioner to steady
Determine state, and keep stable state to run one section of preset time；
The current detector is connected with the controller and comparator respectively, when controller control air-conditioning keeps steady
Determine after state runs one section of preset time, to control the current detector to detect the running current of outdoor fan in real time, and by institute
Running current is stated to send to the comparator；
The comparator is connected with the controller, judges the room under predetermined period according to the running current received
Whether the rate of change of the running current of outer blower fan is less than or equal to preset value, and will determine that result is sent to the controller；
When the judged result is that the rate of change of the running current of outdoor fan is less than or equal to preset value under predetermined period
When, control air-conditioner set enters defrost.
Preferably, the comparator judges whether the running current is less than always according to the running current received
In the first pre-set current value, and it will determine that result is sent to the controller；
When the judged result be predetermined period under outdoor fan running current rate of change be less than or equal to preset value and
When the running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, control air-conditioner set enters defrost.
Preferably, the defrosting control device also includes：Temperature sensor；
The temperature of temperature sensor detection outdoor environment and the temperature of outdoor pipe, and by the temperature of the outdoor environment
Sent with the temperature of outdoor pipe to the connected comparator；
The comparator judges the outdoor ring according to the temperature of the outdoor environment received and the temperature of outdoor pipe
Whether the temperature in border and the temperature of outdoor pipe meet the first preparatory condition, and will determine that result is sent to the controller；
When the judged result under predetermined period the running current of outdoor fan rate of change be less than or equal to preset value,
The running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, and the temperature of outdoor environment and outdoor pipe
When temperature meets the first preparatory condition, control air-conditioner set enters defrost.
Preferably, after air-conditioner set enters defrost, the current detector also detects the operation electricity of outdoor fan in real time
Stream, and the running current of the outdoor fan is sent to the connected comparator；
The temperature sensor also detects the temperature of outdoor environment and the temperature of outdoor pipe, and by the temperature of the outdoor environment
The temperature of degree and outdoor pipe is sent to the connected comparator；
The comparator judges the operation of the outdoor fan always according to the running current of the outdoor fan received
Whether electric current is more than the second predetermined current, and will determine that result is sent to the connected controller；
The comparator judges the outdoor always according to the temperature of the outdoor environment received and the temperature of outdoor pipe
Whether the temperature of environment and the temperature of outdoor pipe meet the second preparatory condition, and will determine that result is sent to connected described
Controller；
When the judged result is more than or equal to the second pre-set current value and the room for the running current of the outdoor fan
When the temperature of external environment and the temperature of outdoor pipe meet the second preparatory condition, control air-conditioner set exits defrost.
A kind of defrosting control device, including：It is connected with the outdoor fan of air-conditioning, obtains the operation electricity of outdoor fan in real time
Stream, the control mainboard of defrosting control is carried out to air-conditioner set according to the rate of change of the running current of outdoor fan.
Preferably, the defrosting control device also includes：Environment temperature-sensitive bag and pipe temperature-sensitive bag；Wherein：
It is described detection outdoor environment temperature environment temperature-sensitive bag be disposed in the outdoor at the grid of machine, and with the control mainboard
It is connected；
The pipe temperature-sensitive bag of sensing chamber's outer tube temperature is arranged on the copper pipe of condenser, and with the control mainboard phase
Even；
The control mainboard detects the running current of outdoor fan in real time, receives the connected environment temperature-sensitive bag inspection
The outdoor environment temperature of survey and the pipe temperature-sensitive bag detection outdoor pipe temperature, and according to the running current of the outdoor fan,
Outdoor environment temperature and outdoor pipe temperature carry out defrosting control to air-conditioner set.
It can be seen from the above technical scheme that a kind of defrosting control method disclosed by the invention, empty by controlling first
Allocation and transportation row keeps stable state to run one section of preset time to stable state, then detects outdoor fan of air-conditioner in real time
Running current, and judged according to the running current of the outdoor fan of air-conditioner detected under the default time cycle, outdoor fan
The rate of change of running current whether be less than or equal to preset value, when the rate of change of the running current of outdoor fan be less than or equal to it is default
During value, just air-conditioner set is controlled to enter defrost.It can thus be seen that the current changing rate that the present invention passes through outdoor fan of air conditioner
Defrost is controlled, defrost control is carried out by the temperature of air conditioning chamber's outer tube and the current value of outdoor fan compared to prior art
System, the operation more reasonable effect of simpler and defrost are more preferable.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of defrosting control method disclosed by the invention；
Fig. 2 is the flow chart of another defrosting control method disclosed by the invention；
Fig. 3 is the flow chart of another defrosting control method disclosed by the invention；
Fig. 4 is the flow chart of another defrosting control method disclosed by the invention；
Fig. 5 is a kind of structural representation of defrosting control device disclosed by the invention；
Fig. 6 is the structural representation of another defrosting control device disclosed by the invention；
Fig. 7 is a kind of structural representation of defrosting control device disclosed by the invention；
Fig. 8 is the structural representation of another defrosting control device disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of defrosting control method and device, passes through the curent change of outdoor fan of air conditioner
Rate, defrost is controlled so that operation is simple to operate and defrost reasonably can be controlled.
As shown in figure 1, be a kind of defrosting control method disclosed by the invention, including：
S101, control operation of air conditioner keep stable state to run one section of preset time to stable state；
The running current of S102, in real time detection outdoor fan；
S103, judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if
It is then to enter step S104, if otherwise entering step S102：
S104, control air-conditioner set enter defrost.
Specifically, the principle and the course of work of defrosting control method disclosed in above-described embodiment are：First, on air-conditioning
Electricity, air-conditioning is set to carry out heating operation, during air-conditioning carries out heating operation, the electric current of outdoor fan of air-conditioner is flowed through in detection,
When the electric current for flowing through outdoor fan of air-conditioner reaches rated current, show that now air-conditioning has been run to stable state.In order to avoid
The frequent defrost of unit, after operation of air conditioner to stable state, control air-conditioning keeps stable state to run one section of preset time.So
Afterwards, the running current of detection outdoor fan of air-conditioner, and judge the change of the running current of outdoor fan under predetermined period in real time
Whether rate is less than or equal to preset value, if then control air-conditioner set enters defrost.
Defrosting control method disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, lead to
Cross and judge that the current changing rate of the outdoor fan of air-conditioner under predetermined period is controlled to defrost, pass through sky compared to prior art
The temperature of outdoor pipe and the current value of outdoor fan is adjusted to carry out defrosting control, present invention operation is simpler, defrost is more reasonable, effect
Fruit is more preferable.
As shown in Fig. 2 be the present invention another defrosting control method disclosed on the basis of above-described embodiment, it is specific to wrap
Include following steps：
S201, control operation of air conditioner keep stable state to run one section of preset time to stable state；
The running current of S202, in real time detection outdoor fan；
Whether the running current for the outdoor fan that S203, judgement detect in real time is less than or equal to the first pre-set current value, if
Then enter step S204：
S204, judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if
It is then to enter step S205：
S205：Control unit enters defrost.
Specifically, the principle and the course of work of defrosting control method disclosed in above-described embodiment are：First, on air-conditioning
Electricity, air-conditioning is set to carry out heating operation, during air-conditioning carries out heating operation, the electric current of outdoor fan of air-conditioner is flowed through in detection,
When the electric current for flowing through outdoor fan of air-conditioner reaches rated current, show that now air-conditioning has been running for stable state.In order to keep away
Exempt from the frequent defrost of unit, after operation of air conditioner to stable state, control air-conditioning keeps stable state to run one section of preset time, so
Afterwards, whether the running current of detection outdoor fan of air-conditioner, the running current for the outdoor fan for judging to detect in real time are less than in real time
Equal to the first pre-set current value, when the running current of outdoor fan is less than or equal to the first preset value, determine whether default
Whether the rate of change of the running current of outdoor fan is less than or equal to preset value under cycle, when the operation of the outdoor fan detected in real time
Electric current is less than or equal to the first pre-set current value, and the rate of change of the running current of outdoor fan is less than or equal in advance under predetermined period
If value, control unit enters defrost.
Defrosting control method disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, no
Only judge the current changing rate of the outdoor fan of air-conditioner under predetermined period, also judge the operation of outdoor fan detected in real time simultaneously
Whether electric current is less than or equal to the first pre-set current value, only when the rate of change of the running current of outdoor fan under predetermined period is small
In equal to preset value, and when the running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, ability control machine
Group enters defrost.It can thus be seen that the condition by increasing defrosting control so that defrosting control is more reasonable, and effect is more
It is good.
As shown in figure 3, be the present invention another defrosting control method disclosed on the basis of above-described embodiment, it is specific to wrap
Include following steps：
S301, control operation of air conditioner keep stable state to run one section of preset time to stable state；
The running current of S302, in real time detection outdoor fan；
Whether the running current for the outdoor fan that S303, judgement detect in real time is less than or equal to the first pre-set current value, if
Then enter step S304：
S304, judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if
It is then to enter step S307, if otherwise entering step S302：
S305, the temperature for detecting outdoor environment and outdoor pipe temperature；
Whether S306, the temperature for judging outdoor environment and outdoor pipe temperature meet the first preparatory condition, if then entering
Step S307, if otherwise entering step S305：
S307, it is less than or equal to preset value and outdoor ring when the rate of change of the running current of outdoor fan under predetermined period
When the temperature in border and the temperature of outdoor pipe meet the first preparatory condition, control unit enters defrost.
Specifically, the principle and the course of work of defrosting control method disclosed in above-described embodiment are：First to power-on of air conditioner,
Air-conditioning is set to carry out heating operation, during air-conditioning carries out heating operation, the electric current of outdoor fan of air-conditioner is flowed through in detection, works as stream
When crossing the electric current of outdoor fan of air-conditioner and reaching rated current, show that now air-conditioning has been running for stable state.In order to avoid machine
The frequent defrost of group, after operation of air conditioner to stable state, control air-conditioning keeps stable state to run one section of preset time, Ran Houshi
When detection outdoor fan of air-conditioner running current, and detect the temperature of outdoor environment and the temperature of air conditioning chamber's outer tube, then sentence
Whether the running current of the disconnected outdoor fan detected in real time is less than or equal to the first pre-set current value, when the running current of outdoor fan
During less than or equal to the first preset value, determine whether the rate of change of the running current of outdoor fan under predetermined period is less than
Preset value, while judge whether the temperature of outdoor environment and the temperature of outdoor pipe meet the first preparatory condition, wherein first is default
Condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；Or the temperature when outdoor environment
When degree is less than T1, the temperature of outdoor pipe is less than or equal to T3.When the running current of the outdoor fan detected in real time is less than or equal to first
Pre-set current value, the rate of change of the running current of outdoor fan is less than or equal to preset value and outdoor environment under predetermined period
When temperature and the temperature of outdoor pipe meet the first preparatory condition, control unit enters defrost.
Defrosting control method disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, no
Only judge the current changing rate of the outdoor fan of air-conditioner under predetermined period, also judge the operation of outdoor fan detected in real time simultaneously
Whether electric current is less than or equal to the first pre-set current value, judges whether the temperature of outdoor environment and the temperature of outdoor pipe meet that first is pre-
If condition, only when the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, in real time detects
The running current of outdoor fan is less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the
During one preparatory condition, just unit is controlled to enter defrost.It can thus be seen that the condition by increasing defrosting control so that defrost
Control is more reasonable, and effect is more preferable.
As shown in figure 4, be the present invention another defrosting control method disclosed on the basis of above-described embodiment, it is specific to wrap
Include：
S401, control operation of air conditioner keep stable state to run one section of preset time to stable state；
The running current of S402, in real time detection outdoor fan；
Whether the running current for the outdoor fan that S403, judgement detect in real time is less than or equal to the first pre-set current value, if
Then enter step S404：
S404, judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, if
It is then to enter step S407：
S405, the temperature for detecting outdoor environment and outdoor pipe temperature；
Whether S406, the temperature for judging outdoor environment and outdoor pipe temperature meet the first preparatory condition, if then entering
Step S407：
S407, it is less than or equal to preset value, and outdoor ring when the rate of change of the running current of outdoor fan under predetermined period
When the temperature in border and the temperature of outdoor pipe meet the first preparatory condition, control unit enters defrost；
The running current of S408, in real time detection outdoor fan；
S409, the temperature for detecting outdoor environment and outdoor pipe temperature；
S410, judge whether the running current of outdoor fan is more than or equal to the second pre-set current value, if then entering step
S412, if otherwise entering step S408：
Whether S411, the temperature for judging outdoor environment and outdoor pipe temperature meet the second preparatory condition, if then entering
Step S412, if otherwise entering step S409：
S412：When the running current of outdoor fan is more than or equal to temperature and the outdoor of the second pre-set current value and outdoor environment
When the temperature of pipe meets the second preparatory condition, control unit exits defrost.
Specifically, the principle and the course of work of defrosting control method disclosed in above-described embodiment are：First to power-on of air conditioner,
Air-conditioning is set to carry out heating operation, during air-conditioning carries out heating operation, the electric current of outdoor fan of air-conditioner is flowed through in detection, works as stream
When crossing the electric current of outdoor fan of air-conditioner and reaching rated current, show that now air-conditioning has been running for stable state.In order to avoid machine
The frequent defrost of group, after operation of air conditioner to stable state, control air-conditioning keeps stable state to run one section of preset time, Ran Houshi
When detection outdoor fan of air-conditioner running current, and detect the temperature of outdoor environment and the temperature of air conditioning chamber's outer tube, then sentence
Whether the running current of the disconnected outdoor fan detected in real time is less than or equal to the first pre-set current value, when the running current of outdoor fan
During less than or equal to the first preset value, determine whether the rate of change of the running current of outdoor fan under predetermined period is less than
Preset value, while judge whether the temperature of outdoor environment and the temperature of outdoor pipe meet the first preparatory condition, wherein first is default
Condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；Or the temperature when outdoor environment
When degree is less than T1, the temperature of outdoor pipe is less than or equal to T3.When the running current of the outdoor fan detected in real time is less than or equal to first
Pre-set current value, the rate of change of the running current of outdoor fan is less than or equal to preset value under predetermined period, and outdoor environment
When temperature and the temperature of outdoor pipe meet the first preparatory condition, control unit enters defrost.
After unit enters defrost, the running current of outdoor fan is detected in real time, and detects temperature and the room of outdoor environment
The temperature of outer tube, then judges whether the running current of outdoor fan is more than or equal to the second pre-set current value, and judges outdoor ring
Whether the temperature in border and the temperature of outdoor pipe meet the second preparatory condition, wherein the second preparatory condition is：When the temperature of outdoor environment
When degree is more than or equal to T4, the temperature of outdoor pipe is more than or equal to T5；Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe
More than or equal to T6.When the running current of outdoor fan is more than or equal to temperature and the outdoor pipe of the second pre-set current value and outdoor environment
Temperature meet the second preparatory condition when, control unit exit defrost.
Defrosting control method disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, no
Only judge the current changing rate of the outdoor fan of air-conditioner under predetermined period, also judge the operation of outdoor fan detected in real time simultaneously
Whether electric current is less than or equal to the first pre-set current value, judges whether the temperature of outdoor environment and the temperature of outdoor pipe meet that first is pre-
If condition, only when the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, in real time detects
The running current of outdoor fan is less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the
During one preparatory condition, just unit is controlled to enter defrost.When unit enters the fortune for also continuing to detect outdoor fan in real time after defrost
The temperature of the temperature and outdoor pipe of row electric current and outdoor environment, further realizes that unit exits defrosting control.It can thus be seen that
By the condition for increasing defrosting control so that defrosting control is more reasonable, and effect is more preferable.
As shown in figure 5, be a kind of defrosting control device disclosed by the invention, including：Controller 11, memory 12, compare
Device 13 and current detector 14；Wherein：
The memory 12 for being stored with preset time is connected with controller 11, and controller 11 controls operation of air conditioner to stablizing shape
State, and keep stable state to run one section of preset time；
Current detector 14 is connected with controller 11 and comparator 13 respectively, when controller 11 controls air-conditioning to keep stable shape
After state runs one section of preset time, control electric current detector 14 detects the running current of outdoor fan in real time, and by running current
Send to comparator 13；
Comparator 13 is connected with controller 11, judges the outdoor fan under predetermined period according to the running current received
Whether the rate of change of running current is less than or equal to preset value, and will determine that result is sent to controller 11；
When judged result is that the rate of change of the running current of outdoor fan is less than or equal to preset value under predetermined period, control
Air-conditioner set processed enters defrost.
Specifically, the operation principle of defrosting control device disclosed in above-described embodiment is：First, to power-on of air conditioner, sky is made
Row heating operation is transferred in, during air-conditioning carries out heating operation, outdoor fan of air-conditioner is flowed through in the detection of current detector 14
Electric current, when the electric current for flowing through outdoor fan of air-conditioner reaches rated current, show that now air-conditioning has been run to stable state.In order to
The frequent defrost of unit is avoided, after operation of air conditioner to stable state, controller 11 controls air-conditioning to keep stable state to run one section
In the storage of preset time, wherein preset time and memory 12.Then, the control electric current detector 14 of controller 11 detects in real time
The running current of outdoor fan of air-conditioner, and the running current of the outdoor fan detected is sent to comparator 13, comparator 13
It is pre- that running current according to receiving judges whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to
If value, and will determine that result is sent to controller 11, when judged result is the running current of outdoor fan under predetermined period
When rate of change is less than or equal to preset value, controller 11 controls air-conditioner set to enter defrost.
Defrosting control device disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, lead to
Cross and judge that the current changing rate of the outdoor fan of air-conditioner under predetermined period is controlled to defrost, pass through sky compared to prior art
The temperature of outdoor pipe and the current value of outdoor fan is adjusted to carry out defrosting control, present invention operation is simpler, defrost is more reasonable, effect
Fruit is more preferable.
As shown in fig. 6, be the present invention another defrosting control device disclosed on the basis of above-described embodiment, including：
Controller 21, memory 22, comparator 23, current detector 24 and temperature sensor 25；Wherein：
The memory 22 for being stored with preset time is connected with controller 21, and controller 21 controls operation of air conditioner to stablizing shape
State, and keep stable state to run one section of preset time；
Current detector 24 is connected with controller 21 and comparator 23 respectively, when controller 21 controls air-conditioning to keep stable shape
After state runs one section of preset time, control electric current detector 24 detects the running current of outdoor fan in real time, and by running current
Send to comparator 23；
Comparator 23 is connected with controller 21, judges the outdoor fan under predetermined period according to the running current received
Whether the rate of change of running current is less than or equal to preset value, and will determine that result is sent to controller 21；
Comparator 23 judges whether running current is less than or equal to the first pre-set current value always according to the running current received,
And it will determine that result is sent to controller 21；
Temperature sensor 25 detects the temperature of outdoor environment and the temperature of outdoor pipe, and by the temperature of outdoor environment and outdoor
The temperature of pipe is sent to connected comparator 23；
Comparator 23 according to the temperature of the outdoor environment received and the temperature of outdoor pipe judge outdoor environment temperature and
Whether the temperature of outdoor pipe meets the first preparatory condition, and will determine that result is sent to controller 21；
When judged result under predetermined period the running current of outdoor fan rate of change be less than or equal to preset value, in real time
The running current of the outdoor fan of detection is less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe
When meeting the first preparatory condition, controller 21 controls air-conditioner set to enter defrost；
After air-conditioner set enters defrost, the also running current of detection outdoor fan, and by room in real time of current detector 24
The running current of outer blower fan is sent to connected comparator 23；
Temperature sensor 25 also detects the temperature of outdoor environment and the temperature of outdoor pipe, and by the temperature of outdoor environment and room
The temperature of outer tube is sent to connected comparator 23；
Comparator 23 judges whether the running current of outdoor fan is big always according to the running current of the outdoor fan received
In the second predetermined current, and it will determine that result is sent to connected controller 21；
Comparator 23 judges the temperature of outdoor environment always according to the temperature of the outdoor environment received and the temperature of outdoor pipe
Whether meet the second preparatory condition with the temperature of outdoor pipe, and will determine that result is sent to connected controller 21；
When the running current that judged result is outdoor fan is more than or equal to the temperature of the second pre-set current value and outdoor environment
When meeting the second preparatory condition with the temperature of outdoor pipe, controller 21 controls air-conditioner set to exit defrost.
Specifically, the operation principle of defrosting control device disclosed in above-described embodiment is：First to power-on of air conditioner, make air-conditioning
Heating operation is carried out, during air-conditioning carries out heating operation, current detector 24 detects the electricity for flowing through outdoor fan of air-conditioner
Stream, when the electric current for flowing through outdoor fan of air-conditioner reaches rated current, shows that now air-conditioning has been running for stable state.In order to
The frequent defrost of unit is avoided, after operation of air conditioner to stable state, controller 21 controls air-conditioning to keep stable state to run one section
In the storage of preset time, wherein preset time and memory 22.Then current detector 24 detects outdoor fan of air-conditioner in real time
Running current, and the running current of the outdoor fan detected is sent to comparator 23, outside the sensing chamber of temperature sensor 25
The temperature of environment and the temperature of air conditioning chamber's outer tube, and the temperature of the outdoor environment detected and the temperature of air conditioning chamber's outer tube are sent
To comparator 23.Comparator 23 judges the fortune of the outdoor fan under predetermined period according to the running current of the outdoor fan received
Whether the rate of change of row electric current is less than preset value, and whether the running current for the outdoor fan for judging to detect in real time is less than or equal to first
Pre-set current value, the temperature of outdoor environment and outdoor pipe are judged according to the temperature of the temperature of the outdoor environment received and outdoor pipe
Temperature whether meet the first preparatory condition, wherein the first preparatory condition is：When the temperature of outdoor environment is more than or equal to T1, room
The temperature of outer tube is less than or equal to T2；Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is less than or equal to T3.Work as judgement
As a result the outdoor fan for being less than or equal to preset value for the rate of change of the running current of outdoor fan under predetermined period, detecting in real time
Running current be less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the first default bar
During part, controller 21 controls unit to enter defrost.
After unit enters defrost, current detector 24 detects the running current of outdoor fan in real time, and will detect
The running current of outdoor fan sends to comparator 23, temperature sensor 25 and detects the temperature of outdoor environment and the temperature of outdoor pipe
Degree, and the temperature of the temperature of the outdoor environment detected and outdoor pipe is sent to comparator 23, comparator 23 is according to receiving
The running current of outdoor fan judge whether the running current of outdoor fan is more than or equal to the second pre-set current value, according to reception
To the temperature of outdoor environment and the temperature of outdoor pipe judge whether the temperature of outdoor environment and the temperature of outdoor pipe meet second
Preparatory condition, wherein the second preparatory condition is：When the temperature of outdoor environment is more than or equal to T4, the temperature of outdoor pipe is more than or equal to
T5；Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is more than or equal to T6.When the fortune that judged result is outdoor fan
When row electric current is more than or equal to the second pre-set current value and the temperature of outdoor environment and the temperature of outdoor pipe the second preparatory condition of satisfaction,
Controller 21 controls unit to exit defrost.
Defrosting control device disclosed in above-described embodiment, when operation of air conditioner to stable state and after run a period of time, no
Only judge the current changing rate of the outdoor fan of air-conditioner under predetermined period, also judge the operation of outdoor fan detected in real time simultaneously
Whether electric current is less than or equal to the first pre-set current value, judges whether the temperature of outdoor environment and the temperature of outdoor pipe meet that first is pre-
If condition, only when the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, in real time detects
The running current of outdoor fan is less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the
During one preparatory condition, just unit is controlled to enter defrost.When unit enters the fortune for also continuing to detect outdoor fan in real time after defrost
The temperature of the temperature and outdoor pipe of row electric current and outdoor environment, further realizes that unit exits defrosting control.It can thus be seen that
By the condition for increasing defrosting control so that defrosting control is more reasonable, and effect is more preferable.
As shown in fig. 7, be a kind of defrosting control device disclosed by the invention, including：It is connected with the outdoor fan of air-conditioning, it is real
When obtain outdoor fan running current, according to the rate of change of the running current of outdoor fan to air-conditioner set carry out defrosting control
Control mainboard 31.Wherein：32 it is outdoor fan, 33 be outdoor heat exchanger, 34 be four-way valve, 35 be compressor, 36 is gas-liquid
Separator, 37 are indoor heat exchanger.
Specifically, the operation principle of defrosting control device disclosed in above-described embodiment is：First, to power-on of air conditioner, sky is made
Row heating operation is transferred in, during air-conditioning carries out heating operation, control mainboard 31 detects detection and flowed through outside air conditioning chamber in real time
The electric current of blower fan, when the electric current for flowing through outdoor fan of air-conditioner reaches rated current, show that now air-conditioning has been run to stablizing shape
State.In order to avoid the frequent defrost of unit, after operation of air conditioner to stable state, control mainboard 31 controls air-conditioning to keep stable state
One section of preset time is run, wherein preset time is stored in control mainboard 31.Then, control mainboard 31 continues to detect in real time
The running current of outdoor fan of air-conditioner, and the outdoor wind under predetermined period is judged according to the running current of the outdoor fan detected
Whether the rate of change of the running current of machine is less than or equal to preset value, when judged result is the operation of the outdoor fan under predetermined period
When the rate of change of electric current is less than or equal to preset value, control mainboard 31 controls air-conditioner set to enter defrost.
As shown in figure 8, be the present invention another defrosting control device disclosed on the basis of above-described embodiment, including：
Control mainboard 41, environment temperature-sensitive bag 42 and pipe temperature-sensitive bag 43；Wherein：
Control mainboard 41 is connected with the outdoor fan of air-conditioning, obtains the running current of outdoor fan in real time；
Environment temperature-sensitive bag 42 is disposed in the outdoor at the grid of machine, detects outdoor environment temperature, and the room that will be detected in real time
External environment temperature is sent to connected control mainboard 41；
Pipe temperature-sensitive bag 43 is arranged on the copper pipe of condenser, real-time sensing chamber's outer tube temperature, and the outdoor pipe that will be detected
Temperature send to connected control mainboard 41；
Control mainboard 41 according to the running current of outdoor fan, to air-conditioner set enter by outdoor environment temperature and outdoor pipe temperature
Row defrosting control.Wherein：44 it is outdoor fan, 45 be outdoor heat exchanger, 46 be four-way valve, 47 be compressor, 48 is gas-liquid point
It is indoor heat exchanger from device, 49.
Specifically, the operation principle of defrosting control device disclosed in above-described embodiment is：First to power-on of air conditioner, make air-conditioning
Heating operation is carried out, during air-conditioning carries out heating operation, control mainboard 41 detects the electric current for flowing through outdoor fan of air-conditioner,
When the electric current for flowing through outdoor fan of air-conditioner reaches rated current, show that now air-conditioning has been running for stable state.In order to keep away
Exempt from the frequent defrost of unit, after operation of air conditioner to stable state, control mainboard 41 controls air-conditioning to keep stable state to run one section
Preset time, wherein preset time are stored in control mainboard 41.Then control mainboard 41 continues to detect outside air conditioning chamber in real time
The running current of blower fan, environment temperature-sensitive bag 42 detect the temperature of outdoor environment, and pipe temperature-sensitive bag 43 detects the temperature of air conditioning chamber's outer tube,
And the temperature of the temperature of the outdoor environment detected and air conditioning chamber's outer tube is sent to control mainboard 41.Control mainboard 41 is according to connecing
It is pre- that the running current of the outdoor fan received judges whether the rate of change of the running current of outdoor fan under predetermined period is less than
If value, whether the running current for the outdoor fan for judging to detect in real time is less than or equal to the first pre-set current value, according to what is received
The temperature of outdoor environment and the temperature of outdoor pipe judge whether the temperature of outdoor environment and the temperature of outdoor pipe meet that first is default
Condition, wherein the first preparatory condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；
Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is less than or equal to T3.When judged result is the room under predetermined period
The rate of change of the running current of outer blower fan is less than or equal to preset value, the running current of the outdoor fan detected in real time is less than or equal to the
One pre-set current value, and when the temperature of outdoor environment and the temperature of outdoor pipe the first preparatory condition of satisfaction, control mainboard 41 controls
Unit enters defrost.
After unit enters defrost, control mainboard 41 continues the running current of detection outdoor fan in real time, environment temperature-sensitive bag
The temperature of 42 detection outdoor environments, the temperature of pipe temperature-sensitive bag sensing chamber outer tube, and by the temperature of the outdoor environment detected and room
The temperature of outer tube is sent to control mainboard 41, control mainboard 41 judges outdoor wind according to the running current of the outdoor fan received
Whether the running current of machine is more than or equal to the second pre-set current value, according to the temperature of the outdoor environment received and the temperature of outdoor pipe
Degree judges whether the temperature of outdoor environment and the temperature of outdoor pipe meet the second preparatory condition, wherein the second preparatory condition is：When
When the temperature of outdoor environment is more than or equal to T4, the temperature of outdoor pipe is more than or equal to T5；Or when the temperature of outdoor environment is less than T1
When, the temperature of outdoor pipe is more than or equal to T6.When judged result is more than or equal to the second predetermined current for the running current of outdoor fan
When value and the temperature of outdoor environment and the temperature of outdoor pipe the second preparatory condition of satisfaction, control mainboard 41 controls exiting of unit
Frost.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
- A kind of 1. defrosting control method, it is characterised in that including：Operation of air conditioner is controlled to stable state, and keeps stable state to run one section of preset time；The running current of detection outdoor fan in real time；Detect the temperature of outdoor environment and the temperature of outdoor pipe；Judge whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the first preparatory condition；When the running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, and the temperature of outdoor environment and room When the temperature of outer tube meets the first preparatory condition, judge whether the rate of change of the running current of outdoor fan under predetermined period is small In equal to preset value, if then：Control air-conditioner set enters defrost；Wherein, first preparatory condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is less than or equal to T3.
- 2. according to the method for claim 1, it is characterised in that control unit also includes after entering defrost：The running current of detection outdoor fan in real time；Judge whether the running current of the outdoor fan is more than or equal to the second pre-set current value, if then：Control unit exits defrost.
- 3. according to the method for claim 2, it is characterised in that control unit also includes before exiting defrost：Detect the temperature of outdoor environment and the temperature of outdoor pipe；Judge whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the second preparatory condition；When the operation of outdoor fan Electric current is more than or equal to the second pre-set current value, and when the temperature of outdoor environment and the temperature of outdoor pipe the second preparatory condition of satisfaction, Control unit exits defrost.
- A kind of 4. defrosting control device, it is characterised in that including：Controller, memory, comparator, current detector, temperature pass Sensor；Wherein：The memory for being stored with preset time is connected with the controller, and the controller controls operation of air conditioner to stablizing shape State, and keep stable state to run one section of preset time；The current detector is connected with the controller and comparator respectively, when controller control air-conditioning keeps stable shape After state runs one section of preset time, the current detector is controlled to detect the running current of outdoor fan in real time, and by the fortune Row electric current is sent to the comparator；The temperature of temperature sensor detection outdoor environment and the temperature of outdoor pipe, and by the temperature of the outdoor environment and room The temperature of outer tube is sent to the connected comparator；The comparator is connected with the controller, temperature and outdoor of the comparator according to the outdoor environment received The temperature of pipe judges whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the first preparatory condition, when what is detected in real time The running current of outdoor fan is less than or equal to the first pre-set current value, and the temperature of outdoor environment and the temperature of outdoor pipe meet the During one preparatory condition, judge whether the rate of change of the running current of outdoor fan under predetermined period is less than or equal to preset value, and It will determine that result is sent to the controller；When the judged result is that the rate of change of the running current of outdoor fan is less than or equal to preset value under predetermined period, control Air-conditioner set processed enters defrost；Wherein, first preparatory condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；Or when the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is less than or equal to T3.
- 5. device according to claim 4, it is characterised in that after air-conditioner set enters defrost, the current detector The also running current of detection outdoor fan, and the running current of the outdoor fan is sent to the connected ratio in real time Compared with device；The temperature sensor also detects the temperature of outdoor environment and the temperature of outdoor pipe, and by the temperature of the outdoor environment and The temperature of outdoor pipe is sent to the connected comparator；The comparator judges the running current of the outdoor fan always according to the running current of the outdoor fan received Whether it is more than the second predetermined current, and will determine that result is sent to the connected controller；The comparator judges the outdoor environment always according to the temperature of the outdoor environment received and the temperature of outdoor pipe Temperature and the temperature of outdoor pipe whether meet the second preparatory condition, and will determine that result is sent to the connected control Device；When the judged result is more than or equal to the second pre-set current value and the outdoor ring for the running current of the outdoor fan When the temperature in border and the temperature of outdoor pipe meet the second preparatory condition, control air-conditioner set exits defrost.
- A kind of 6. defrosting control device, it is characterised in that including：It is connected with the outdoor fan of air-conditioning, obtains outdoor fan in real time Running current, according to the rate of change of the running current of outdoor fan to air-conditioner set carry out defrosting control control mainboard, also Including：Environment temperature-sensitive bag and pipe temperature-sensitive bag；Wherein：It is described detection outdoor environment temperature environment temperature-sensitive bag be disposed in the outdoor at the grid of machine, and with the control mainboard phase Even；The pipe temperature-sensitive bag of sensing chamber's outer tube temperature is arranged on the copper pipe of condenser, and is connected with the control mainboard；The control mainboard detects the running current of outdoor fan in real time, receives the connected environment temperature-sensitive bag detection Outdoor environment temperature and the outdoor pipe temperature of pipe temperature-sensitive bag detection, and according to the running current of the outdoor fan, outdoor Environment temperature and outdoor pipe temperature carry out defrosting control to air-conditioner set；Wherein, the control mainboard carries out defrosting control to air-conditioner set, specifically includes：Judge whether the temperature of the outdoor environment and the temperature of outdoor pipe meet the first preparatory condition；When the running current of the outdoor fan detected in real time is less than or equal to the first pre-set current value, and the temperature of outdoor environment and room When the temperature of outer tube meets the first preparatory condition, judge whether the rate of change of the running current of outdoor fan under predetermined period is small In equal to preset value, if then：Control air-conditioner set enters defrost；First preparatory condition is：When the temperature of outdoor environment is more than or equal to T1, the temperature of outdoor pipe is less than or equal to T2；Or When the temperature of outdoor environment is less than T1, the temperature of outdoor pipe is less than or equal to T3.
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| CN201410033895.9A CN104807132B (en) | 2014-01-23 | 2014-01-23 | A kind of defrosting control method and device |
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| CN201410033895.9A CN104807132B (en) | 2014-01-23 | 2014-01-23 | A kind of defrosting control method and device |
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| CN104807132B true CN104807132B (en) | 2018-02-27 |
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| CN104807132A (en) | 2015-07-29 |
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