CN115574425B - Air conditioner defrosting control method and device and air conditioner - Google Patents
Air conditioner defrosting control method and device and air conditioner Download PDFInfo
- Publication number
- CN115574425B CN115574425B CN202211390012.0A CN202211390012A CN115574425B CN 115574425 B CN115574425 B CN 115574425B CN 202211390012 A CN202211390012 A CN 202211390012A CN 115574425 B CN115574425 B CN 115574425B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- outdoor
- temperature value
- outdoor fan
- defrosting
- Prior art date
- 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.)
- Active
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004590 computer program Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 15
- 230000017525 heat dissipation Effects 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The invention provides an air conditioner defrosting control method, a control device and an air conditioner. The control method comprises the following steps: when the air conditioner enters a defrosting mode, controlling the outdoor fan to run in a high wind gear, and detecting an outdoor environment temperature value T Outer ring ; controlling the air conditioner to enter an outdoor fan adjusting mode according to an outdoor environment temperature value T Outer ring ; detecting an outdoor coil temperature value T Outer disc and/or a rated current value I s when the rotating speed of the outdoor fan reaches a high-wind-gear rated rotating speed for the first time; judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil pipe and/or the running current value I and the rated current value I S; if yes, the outdoor fan is controlled to be closed. The invention can solve the technical problem that the defrosting period is prolonged because the outdoor fan stops running after the air conditioner enters the defrosting mode.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner.
Background
When the air conditioner operates in a heating mode, after frosting of the heat exchanger of the outdoor unit, the air outlet of the outdoor unit is unsmooth when the frost layer is thicker, and therefore the heat exchange efficiency of the heat exchanger of the outdoor unit can be affected. At present, when an air conditioner is used for defrosting, a heating mode is converted into a refrigerating mode, and the temperature of a coil pipe of a heat exchanger of an outdoor unit is increased by reversely running the refrigerating mode, so that defrosting effect is achieved; in order to avoid the problems of cold air blowing of the indoor unit and too fast heat dissipation of the outdoor unit, the indoor fan and the outdoor fan stop running, so that the heat exchange efficiency of the air conditioning system is reduced. In the prior art, the defects are as follows: after the air conditioner enters a defrosting mode, the operation efficiency of the air conditioning system is low because the outdoor fan stops operating, and the defrosting period is further prolonged.
Disclosure of Invention
The invention can solve the technical problem that the defrosting period is prolonged because the outdoor fan stops running after the air conditioner enters the defrosting mode.
In order to solve the above problems, the present invention provides an air conditioner defrosting control method, which includes: when the air conditioner enters a defrosting mode, controlling the outdoor fan to run in a high wind gear, and detecting an outdoor environment temperature value T Outer ring ; controlling the air conditioner to enter an outdoor fan adjusting mode according to an outdoor environment temperature value T Outer ring ; detecting an outdoor coil temperature value T Outer disc and/or a rated current value I S when the rotating speed of the outdoor fan reaches a high-wind-gear rated rotating speed for the first time; judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil pipe and/or the running current value I and the rated current value I S; if yes, the outdoor fan is controlled to be closed.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: after the air conditioner enters a defrosting mode, the outdoor fan is adjusted to a high wind level to operate, so that defrosting efficiency of the air conditioner can be improved, and it can be understood that a certain frost layer is formed on the outdoor unit of the air conditioner after the outdoor unit of the air conditioner frosts, and the thickness of the frost layer can obstruct air circulation, so that when the air conditioner just enters the defrosting mode, the opening of the outdoor fan can be controlled according to the magnitude of an outdoor environment temperature value T Outer ring , and the stripping effect of the frost layer on the outdoor unit can be improved; meanwhile, in the defrosting process of the air conditioner, the frost layer on the outdoor unit gradually reduces along with continuous defrosting, the operation current value I of the outdoor fan gradually reduces at the corresponding moment, and the user can know that the defrosting condition of the air conditioner is usual by detecting the operation current value I, when the air conditioner just enters a defrosting mode, the frost layer on the outdoor unit is thicker, and after the gear of the outdoor fan is adjusted to a high-wind gear operation, the defrosting efficiency of the outdoor unit can be accelerated, and defrosting time is saved.
Further, in the present invention, the outdoor fan stop condition includes: the first shutdown condition of the outdoor fan and the second shutdown condition of the outdoor fan, and judging whether the air conditioner meets the shutdown condition of the outdoor fan comprises the following steps: when the outdoor environment temperature value T Outer ring is larger than the frosting temperature value T 0, judging whether the air conditioner meets the first shutdown condition of the outdoor fan according to the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc ; and/or when the outdoor environment temperature value T is less than or equal to the frosting temperature value T 0, judging whether the air conditioner meets the second shutdown condition of the outdoor fan according to the outdoor environment temperature value T Outer ring , the outdoor coil temperature value T Coiled pipe , the running current value I and the rated current value I S.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: in the defrosting mode, the defrosting efficiency of the air conditioner is also related to an outdoor environment temperature value T Outer ring , and the defrosting efficiency can be influenced by the size of the environment temperature value T Outer ring , so that when judging whether the outdoor fan is required to be controlled to stop running or not, the size of the outdoor environment temperature value T Outer ring is required to be referred to; when the outdoor environment temperature value T Outer ring reaches the frosting temperature value T 0, whether the air conditioner meets the first shutdown condition of the outdoor fan can be further judged according to the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc ; when the outdoor environment temperature value T Outer ring does not reach the frosting temperature value T 0, the frosting condition of the outdoor unit cannot be directly reflected at the moment, and at the moment, on the basis of the outdoor environment temperature value T Outer ring , the outdoor coil temperature value T Coiled pipe , the running current value I and the rated current value I S are combined, and whether the air conditioner meets the second shutdown condition of the outdoor fan is judged according to the running current of the outdoor fan.
Further, in the present invention, determining whether the air conditioner satisfies the first shutdown condition of the outdoor fan includes: when the temperature value T Outer disc of the outdoor coil is more than or equal to a first preset temperature value T 1 and the temperature value T Outer ring of the outdoor environment-the temperature value T Outer disc of the outdoor coil is less than a preset temperature difference delta T, the air conditioner meets a first shutdown condition of the outdoor fan; and/or; when the temperature value T Outer disc of the outdoor coil is smaller than the first preset temperature value T 1 or the temperature value T Outer ring of the outdoor environment-the temperature value T Outer disc of the outdoor coil is larger than or equal to the preset temperature difference delta T, the air conditioner does not meet the first shutdown condition of the outdoor fan.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when the outdoor coil temperature value T Outer disc is more than or equal to the first preset temperature value T 1 and the outdoor environment temperature value T Outer ring -outdoor coil temperature value T Outer disc is less than the preset temperature difference DeltaT, the method shows that: in the current environment, the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc are higher, meanwhile, the frost layer of the outdoor unit is thinner, if the outdoor fan is started at the moment, defrosting is not facilitated, and meanwhile, the heat dissipation of the air conditioning system is caused, so that the outdoor fan needs to be closed under the condition, namely, the air conditioner meets the first shutdown condition of the outdoor fan; when the temperature value T Outer disc of the outdoor coil is smaller than the first preset temperature value T 1 or the temperature value T Outer ring of the outdoor coil-the temperature value T Outer disc of the outdoor coil is larger than or equal to the preset temperature difference DeltaT, the condition shows that the current temperature value T Outer disc of the outdoor coil is lower in the current environment, and meanwhile, the frost layer of the outdoor unit is lower, if the outdoor fan is started at the moment, the defrosting efficiency is improved, and under the condition, the continuous operation of the outdoor fan can be kept to ensure the defrosting efficiency.
Further, in the present invention, determining whether the air conditioner satisfies the first shutdown condition of the outdoor fan further includes: when the air conditioner meets a first shutdown condition of the outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the first shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when the air conditioner meets the first shutdown condition of the outdoor fan, after the outdoor fan is controlled to be closed, the heat dissipation capacity of the outdoor unit in the defrosting process is reduced; when the air conditioner does not meet the first shutdown condition of the outdoor fan, the outdoor fan is controlled to continue to operate in the current operation state, so that defrosting efficiency of the outdoor unit is improved, and defrosting period is shortened.
Further, in the present invention, determining whether the air conditioner satisfies the second shutdown condition of the outdoor fan includes: when defrosting time T is more than or equal to a first preset time T 1 and outdoor coil temperature value T Outer disc is more than or equal to a second preset temperature value T 2, or operating current value I is less than or equal to rated current value I S x (1-D), the air conditioner meets a second shutdown condition of an outdoor fan; and/or; when the temperature value T Outer disc of the outdoor coil is smaller than the second preset temperature value T 2 and the running current value I is larger than the rated current value I S X (1-D), the air conditioner does not meet the second shutdown condition of the outdoor fan; wherein D is the current drop amplitude when the outdoor fan operates.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when defrosting time T is more than or equal to a first preset time T 1 and an outdoor coil temperature value T Outer disc is more than or equal to a second preset temperature value T 2, or an operating current value I is less than or equal to a rated current value I S x (1-D), because the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc are higher, and meanwhile, the current change degree of the outdoor fan in the operation process is smaller, the outdoor unit frost layer is thinner, if the outdoor fan is started at the moment, defrosting is not facilitated, and meanwhile, heat dissipation of an air conditioning system is caused, so that the outdoor fan needs to be closed under the condition; when the temperature value T Outer disc of the outdoor coil is smaller than the second preset temperature value T 2 and the operating current value I is larger than the rated current value I S x (1-D), the current change degree of the outdoor fan in the operating process is larger because the current value T Outer disc of the current outdoor coil is lower, and the defrosting efficiency is improved if the outdoor fan is started at the moment after the frost layer of the outdoor fan is arranged, under the condition, the continuous operation of the outdoor fan can be kept to ensure the defrosting efficiency.
Further, in the present invention, determining whether the air conditioner satisfies the second shutdown condition of the outdoor fan further includes: when the air conditioner meets the second shutdown condition of the outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the second shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when the air conditioner meets the second shutdown condition of the outdoor fan, after the outdoor fan is controlled to be closed, the heat dissipation capacity of the outdoor unit in the defrosting process is reduced; when the air conditioner does not meet the second shutdown condition of the outdoor fan, the outdoor fan is controlled to continue to operate in the current operation state, so that the defrosting efficiency of the outdoor unit is improved, and the defrosting period is shortened.
Further, in the present invention, the control method further includes: after the outdoor fan is stopped, judging whether the air conditioner meets the defrosting exit condition according to the relation between the temperature value T Outer disc of the outdoor coil and the third preset temperature value T 3 or the relation between defrosting time T and second preset time T 2; if yes, controlling the air conditioner to exit the defrosting mode.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: after the outdoor fan is stopped, according to the temperature value T Outer disc of the outer coil, the third preset temperature value T 3 and the defrosting time T, the air conditioner is judged to be in a defrosting mode, and the air conditioner is controlled to be in a defrosting mode after the air conditioner is judged to be in a defrosting mode, so that the normal operation efficiency of the air conditioner can be ensured.
Further, in the present invention, determining whether the air conditioner satisfies the defrosting exit condition includes: and when the temperature value T Outer disc of the outdoor coil is more than or equal to a third preset temperature value T 3 or the defrosting time T is more than or equal to a second preset time T 2, controlling the air conditioner to exit the defrosting mode.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when the temperature value T Outer disc of the outdoor coil is not less than the third preset temperature value T 3 or the defrosting time T is not less than the second preset time T 2, the outdoor unit is indicated to finish defrosting at the moment, and the operation efficiency of the air conditioner is ensured after the air conditioner is controlled to exit the defrosting mode.
Further, the present invention also provides an air conditioner control device, the control device comprising: the detection module is used for controlling the outdoor fan to operate in a high wind gear when the air conditioner enters a defrosting mode, detecting an outdoor environment temperature value T Outer ring , an outdoor coil temperature value T Outer disc and/or an operating current value I of the outdoor fan and a rated current value I S when the rotating speed of the outdoor fan reaches a rated rotating speed of the high wind gear for the first time; the control module is used for controlling the air conditioner to enter an outdoor fan adjusting mode according to the outdoor environment temperature value T Outer ring and controlling the outdoor fan to be closed when the air conditioner meets the shutdown condition of the outdoor fan; the judging module is used for judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil, and/or the running current value I and the rated current value I S.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: when executing the air conditioner defrosting control method in the above embodiment, the air conditioner control device has all the technical features and all the beneficial effects of the control method in the above embodiment, and will not be described in detail herein.
Further, the present invention also provides an air conditioner, which includes a computer readable storage medium storing a computer program and a processor, and when the computer program is read by the processor, the air conditioner defrosting control method in the above embodiment is implemented.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the air conditioner is provided with the air conditioner defrosting control method in the above embodiment, or after the control method in the above embodiment is implemented, the air conditioner has all the technical features and all the beneficial effects of the energy saving system and the control method in the above embodiment, and will not be described in detail herein.
In summary, after the technical scheme of the invention is adopted, the following technical effects can be achieved:
i) After the air conditioner enters a defrosting mode, the outdoor fan is adjusted to a high wind level to operate, so that defrosting efficiency of the air conditioner can be improved, and it can be understood that a certain frost layer is formed on the outdoor unit of the air conditioner after the outdoor unit of the air conditioner frosts, and the thickness of the frost layer can obstruct air circulation, so that when the air conditioner just enters the defrosting mode, the opening of the outdoor fan can be controlled according to the magnitude of an outdoor environment temperature value T Outer ring , and the stripping effect of the frost layer on the outdoor unit can be improved; meanwhile, in the defrosting process of the air conditioner, as defrosting continues, the frost layer on the outdoor unit gradually decreases, the operation current value I of the outdoor fan gradually decreases at the corresponding moment, and by detecting the operation current value I, a user can know that the defrosting condition of the air conditioner is usual, when the air conditioner just enters a defrosting mode, the frost layer on the outdoor unit is thicker, and after the gear of the outdoor fan is adjusted to a high-wind gear operation, the defrosting efficiency of the outdoor unit can be accelerated, and defrosting time is saved;
ii) when the outdoor coil temperature value T Outer disc is greater than or equal to the first preset temperature value T 1 and the outdoor environment temperature value T Outer ring -the outdoor coil temperature value T Outer disc is less than the preset temperature difference DeltaT, the method indicates that: in the current environment, the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc are higher, meanwhile, the frost layer of the outdoor unit is thinner, if the outdoor fan is started at the moment, defrosting is not facilitated, and meanwhile, the heat dissipation of the air conditioning system is caused, so that the outdoor fan needs to be closed under the condition, namely, the air conditioner meets the first shutdown condition of the outdoor fan; when the temperature value T Outer disc of the outdoor coil is smaller than the first preset temperature value T 1 or the temperature value T Outer ring of the outdoor coil-the temperature value T Outer disc of the outdoor coil is larger than or equal to the preset temperature difference DeltaT, the condition shows that the current temperature value T Outer disc of the outdoor coil is lower in the current environment, and meanwhile, the frost layer of the outdoor unit is lower, if the outdoor fan is started at the moment, the defrosting efficiency is improved, and under the condition, the continuous operation of the outdoor fan can be kept to ensure the defrosting efficiency.
Drawings
Fig. 1 is a schematic diagram of an air conditioner defrosting control method according to a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of an air conditioner defrosting control method in the invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
[ First embodiment ]
Referring to fig. 1-2, a first embodiment of the present invention provides an air conditioner defrosting control method, in the embodiment of the present invention, in the process of air conditioner refrigeration operation, by acquiring an outdoor environment temperature value T Outer ring and a compressor operation time T, the operation environment of the air conditioner can be judged, and then by adjusting the compressor operation frequency F and the outdoor fan rotation speed, the purpose of improving the air conditioner refrigeration efficiency is finally achieved.
Specifically, the air conditioner defrosting control method comprises the following steps:
S10: when the air conditioner enters a defrosting mode, controlling the outdoor fan to run in a high wind gear, and detecting an outdoor environment temperature value T Outer ring ;
S20: controlling the air conditioner to enter an outdoor fan adjusting mode according to an outdoor environment temperature value T Outer ring ;
S30: detecting an outdoor coil temperature value T Outer disc and/or a rated current value I S when the rotating speed of the outdoor fan reaches a high-wind-gear rated rotating speed for the first time;
s40: judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil pipe and/or the running current value I and the rated current value I S;
s50: if yes, the outdoor fan is controlled to be closed.
Preferably, in S10 and S20, after the air conditioner enters the defrosting mode, the outdoor fan is adjusted to a high-speed operation, so that the defrosting efficiency of the air conditioner can be improved, and it can be understood that a certain frost layer is formed on the outdoor unit of the air conditioner after the outdoor unit of the air conditioner is frosted, and the thickness of the frost layer can obstruct the circulation of air, so that when the air conditioner just enters the defrosting mode, the opening of the outdoor fan can be controlled according to the magnitude of an outdoor environment temperature value T Outer ring , and the stripping effect of the frost layer on the outdoor unit can be improved; in general, when the air conditioner just enters a defrosting mode, the frost layer on the outdoor unit is thicker, and when the gear of the outdoor fan is adjusted to a high-gear operation, the defrosting efficiency of the outdoor unit can be accelerated, and the defrosting time is also saved; according to the outdoor environment temperature value T Outer ring , the air conditioner is controlled to enter an outdoor fan adjusting mode, wherein according to the difference of the outdoor environment temperature value T Outer ring , the outdoor fan can be correspondingly controlled to enter different adjusting modes, for example, the outdoor fan can be controlled to increase the rotating speed, decrease the rotating speed, maintain normal operation or stop, and the like, and the outdoor fan adjusting mode is specifically determined by the outdoor environment temperature value T Outer ring , wherein in the invention, the outdoor fan adjusting mode mainly comprises: controlling the outdoor fan to stop according to the outdoor environment temperature value T Outer ring and controlling the outdoor fan to maintain normal operation according to the outdoor environment temperature value T Outer ring ; further, in the invention, when the outdoor fan runs in a high wind gear, the corresponding fan rotating speed n meets the following conditions: n is ∈ [900Rpm,1000Rpm ], where n may be 900Rpm, 950Rpm, or 1000Rpm, and may specifically be determined according to the actual operation condition of the air conditioner and the actual requirement of the user, which is not limited herein.
Further, in S30, in the defrosting process of the air conditioner, as defrosting continues, the frost layer on the outdoor unit gradually decreases, and the corresponding running current value I of the outdoor fan gradually decreases at this time, and by detecting the running current value I, the user can know the defrosting condition of the air conditioner; therefore, in S30, the defrosting degree of the air conditioner can be estimated by detecting the rated current value I S when the rotational speed of the outdoor fan reaches the rated rotational speed of the high wind gear for the first time and detecting the operating current value I of the outdoor fan, and comparing the change of the difference between the rated current value I S and the operating current value I.
Preferably, in S40, according to the outdoor coil temperature value T Outer disc and the values of the rated current value I S and the running current value I, it can be determined whether the frost layer on the outdoor unit is completely dropped, and on the basis of this, it can be determined whether the stopping of the outdoor fan needs to be controlled; when judging whether the air conditioner meets the shutdown condition of the outdoor fan, the shutdown condition of the outdoor fan comprises the following steps: in S40, determining whether the air conditioner satisfies the outdoor fan stop condition includes:
S41: when the outdoor environment temperature value T Outer ring is larger than the frosting temperature value T 0, judging whether the air conditioner meets the first shutdown condition of the outdoor fan according to the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc ;
And/or, S42: when the outdoor environment temperature value T is less than or equal to the frosting temperature value T 0, judging whether the air conditioner meets the second shutdown condition of the outdoor fan according to the outdoor environment temperature value T Outer ring , the outdoor coil temperature value T Coiled pipe , the running current value I and the rated current value I S.
Specifically, in S41 and S42, it can be understood that in the defrosting mode, the defrosting efficiency of the air conditioner is also related to the outdoor environment temperature value T Outer ring , and the size of the environment temperature value T Outer ring can also affect the defrosting efficiency, so that when judging whether the outdoor fan needs to be controlled to stop running, the size of the outdoor environment temperature value T Outer ring needs to be referred to; when the outdoor environment temperature value T Outer ring reaches the frosting temperature value T 0, whether the air conditioner meets the first shutdown condition of the outdoor fan can be further judged according to the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc ; when the outdoor environment temperature value T Outer ring does not reach the frosting temperature value T 0, the frosting condition of the outdoor unit cannot be directly reflected at the moment, and at the moment, on the basis of the outdoor environment temperature value T Outer ring , the outdoor coil temperature value T Coiled pipe , the running current value I and the rated current value I S are combined, and whether the air conditioner meets the second shutdown condition of the outdoor fan or not is judged according to the running current of the outdoor fan; further, in S41 and S42, the frosting temperature value T 0 satisfies: t 0 epsilon [0 ℃,2 ℃), wherein T 0 can be selected from 0 ℃, 1 ℃ and 2 ℃, and the specific conditions can be determined according to the actual running conditions of the air conditioner, and the specific conditions are not limited herein.
Preferably, in S41, determining whether the air conditioner satisfies the first shutdown condition of the outdoor fan includes:
S411: when the temperature value T Outer disc of the outdoor coil is more than or equal to a first preset temperature value T 1 and the temperature value T Outer ring of the outdoor environment-the temperature value T Outer disc of the outdoor coil is less than a preset temperature difference delta T, the air conditioner meets a first shutdown condition of the outdoor fan;
And/or, S412: when the temperature value T Outer disc of the outdoor coil is smaller than the first preset temperature value T 1 or the temperature value T Outer ring of the outdoor environment-the temperature value T Outer disc of the outdoor coil is larger than or equal to the preset temperature difference delta T, the air conditioner does not meet the first shutdown condition of the outdoor fan.
S413: when the air conditioner meets a first shutdown condition of the outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the first shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Specifically, the first preset temperature value T 1 satisfies: t 1 epsilon [0 ℃,1 ℃), wherein T 1 can be 0 ℃, 0.5 ℃ and 1 ℃; the preset temperature difference DeltaT satisfies the following conditions: delta T is epsilon [1 ℃,3 ℃), wherein Delta T can be 1 ℃, 1.5 ℃, 2 ℃, 2.5 ℃ and 3 ℃; in S411, for example, the first preset temperature value T 1 is 0.5 ℃, the preset temperature difference Δt is 2 ℃, when T Outer disc is greater than or equal to 0.5 ℃ and T Outer ring -T Outer disc is less than 2 ℃, this indicates: in the current environment, the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc are higher, meanwhile, the frost layer of the outdoor unit is thinner, if the outdoor fan is started at the moment, defrosting is not facilitated, and meanwhile, the heat dissipation of the air conditioning system can be caused, so that the outdoor fan needs to be closed under the condition, namely, the air conditioner meets the first shutdown condition of the outdoor fan.
Further, in S412, for example, the first preset temperature value T 1 is 0.5 ℃, the preset temperature difference Δt is 2 ℃, when T Outer disc is less than 0.5 ℃, or T Outer ring -T Outer disc is greater than 2 ℃, it is indicated that: under the current environment, the current outdoor coil temperature value T Outer disc is lower, and meanwhile, the outdoor unit frost layer is later, if the outdoor fan is started at the moment, the defrosting efficiency can be improved, and under the condition, the continuous operation of the outdoor fan can be kept, so that the defrosting efficiency is ensured.
Still further, in S413, when the air conditioner satisfies the first stop condition of the outdoor fan, the outdoor fan is controlled to be turned off; and/or when the air conditioner does not meet the first shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Preferably, in S42, determining whether the air conditioner satisfies the second shutdown condition of the outdoor fan includes:
S421: when defrosting time T is more than or equal to a first preset time T 1 and outdoor coil temperature value T Outer disc is more than or equal to a second preset temperature value T 2, or operating current value I is less than or equal to rated current value I S x (1-D), the air conditioner meets a second shutdown condition of an outdoor fan;
And/or, S422: when the temperature value T Outer disc of the outdoor coil is smaller than the second preset temperature value T 2 and the running current value I is larger than the rated current value I S X (1-D), the air conditioner does not meet the second shutdown condition of the outdoor fan; wherein, D is the current drop amplitude during the operation of the outdoor fan, and the first preset temperature value T 1 and the second preset temperature value T 2 satisfy: t 1＞T2.
S423: when the air conditioner meets the second shutdown condition of the outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the second shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Preferably, the second preset temperature value T 2 satisfies: t 2 epsilon [ -1 ℃,0 ℃), wherein T 2 can be selected from-1 ℃, -0.5 ℃ and 0 ℃; the first preset time t 1 satisfies: t 1 epsilon [8s,12s ], wherein t 1 can be 8s, 9s, 10s, 11s, 12s; the drop amplitude D satisfies: d is 8%,12%, wherein, D can be 8%, 9%, 10%, 11%, 12%; in S421, for example, the second preset temperature value T 2 takes on a value of-0.5 ℃, the first preset time T 1 takes on a value of 10S, and the drop amplitude D takes on a value of 10%; when T Outer disc . Gtoreq.0.5℃or I.ltoreq.I S × (1-10%), this indicates: under the current environment, the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc are higher, meanwhile, the current change degree of the outdoor fan in the operation process is smaller, the outdoor unit frost layer is thinner, if the outdoor fan is started at the moment, the defrosting is not facilitated, meanwhile, the heat dissipation of an air conditioning system can be caused, and therefore under the condition, the outdoor fan needs to be closed, namely, under the condition, the air conditioner meets the first shutdown condition of the outdoor fan.
Further, in S422, for example, the second preset temperature value T 2 takes a value of-0.5 ℃, the first preset time T 1 takes a value of 10S, and the drop amplitude D takes a value of 10%; when T Outer disc < -0.5 ℃, or I > I S × (1-10%), this indicates: under the current environment, the current outdoor coil temperature value T Outer disc is lower, the current change degree of the outdoor fan in the operation process is larger, the defrosting efficiency can be improved if the outdoor fan is started at the moment after the outdoor fan is frosted, and under the condition, the continuous operation of the outdoor fan can be kept to ensure the defrosting efficiency.
Still further, in S423, when the air conditioner satisfies the second stop condition of the outdoor fan, the outdoor fan is controlled to be turned off; and/or when the air conditioner does not meet the second shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
Preferably, the air conditioner defrosting control method further comprises:
S60: after the outdoor fan is stopped, judging whether the air conditioner meets the defrosting exit condition according to the relation between the temperature value T Outer disc of the outdoor coil and the third preset temperature value T 3 or the relation between defrosting time T and second preset time T 2;
S70: if yes, controlling the air conditioner to exit the defrosting mode.
Specifically, in S60-S70, the third preset temperature value T 3 and the first preset temperature value T 1 satisfy: t 3＞T1; the third preset temperature value T 3 satisfies: t 3 epsilon [18 ℃,22 ℃), wherein T 3 can be 18 ℃,19 ℃,20 ℃, 21 ℃ and 22 ℃; the second preset time t 2 satisfies: t 2 epsilon [8min,10min ], wherein t 1 can be 8min, 9min or 10min; after the outdoor fan is stopped, whether the air conditioner meets the defrosting exiting condition can be judged according to the relation between the temperature value T Outer disc of the outdoor coil and the third preset temperature value T 3 or the relation between the defrosting time T and the second preset time T 2.
Further, in S60, determining whether the air conditioner satisfies the defrosting exit condition includes:
S61: and when the temperature value T Outer disc of the outdoor coil is more than or equal to a third preset temperature value T 3 or the defrosting time T is more than or equal to a second preset time T 2, controlling the air conditioner to exit the defrosting mode.
For example, the third preset temperature value T 3 is 20 ℃, the second preset time T 2 is 9min, and when T Outer disc is not less than 20 ℃ or T is not less than 9min, it is indicated that defrosting of the outdoor unit is completed, and the air conditioner exits the defrosting mode.
[ Second embodiment ]
In a second embodiment of the present invention, there is provided an air conditioner control device for executing the air conditioner defrosting control method described in the above embodiment, and the control device includes:
The detection module is used for controlling the outdoor fan to operate in a high wind gear when the air conditioner enters a defrosting mode, detecting an outdoor environment temperature value T Outer ring , an outdoor coil temperature value T Outer disc and/or an operating current value I of the outdoor fan and a rated current value I S when the rotating speed of the outdoor fan reaches a rated rotating speed of the high wind gear for the first time;
The control module is used for controlling the air conditioner to enter an outdoor fan adjusting mode according to the outdoor environment temperature value T Outer ring , and controlling the outdoor fan to be closed when the air conditioner meets the shutdown condition of the outdoor fan;
And the judging module is used for judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil, and/or the running current value I and the rated current value I S.
Preferably, when the air conditioner control device is configured to execute the air conditioner defrosting control method described in the above embodiment, all technical features and all beneficial effects of the control method in the above embodiment are provided, and will not be described in detail herein.
[ Third embodiment ]
In a third embodiment of the present invention, there is provided an air conditioner provided with a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implements the air conditioner defrosting control method as described in the above embodiments.
Preferably, when implementing the air conditioner defrosting control method in the above embodiment, the air conditioner has all technical features and all beneficial effects of the air conditioner defrosting control method in the above embodiment, and will not be described in detail herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. An air conditioner defrosting control method, characterized by comprising the following steps:
When the air conditioner enters a defrosting mode, controlling the outdoor fan to run in a high wind gear, and detecting an outdoor environment temperature value T Outer ring ;
Controlling the air conditioner to enter an outdoor fan adjusting mode according to the outdoor environment temperature value T Outer ring ;
detecting an outdoor coil temperature value T Outer disc and/or a rated current value I S when the rotating speed of the outdoor fan reaches a high-wind-gear rated rotating speed for the first time;
judging whether the air conditioner meets the shutdown condition of an outdoor fan according to the outdoor coil temperature value T Outer disc and/or the running current value I and the rated current value I S;
and if yes, controlling to close the outdoor fan.
2. The air conditioner defrosting control method according to claim 1, wherein the outdoor fan stopping condition includes: the first shutdown condition of the outdoor fan and the second shutdown condition of the outdoor fan, and judging whether the air conditioner meets the shutdown condition of the outdoor fan comprises the following steps:
When the outdoor environment temperature value T Outer ring is larger than the frosting temperature value T 0, judging whether the air conditioner meets a first shutdown condition of an outdoor fan or not according to the outdoor environment temperature value T Outer ring and the outdoor coil temperature value T Outer disc ;
And/or when the outdoor environment temperature value T is less than or equal to the frosting temperature value T 0, judging whether the air conditioner meets a second shutdown condition of the outdoor fan according to the outdoor environment temperature value T Outer ring , the outdoor coil temperature value T Coiled pipe , the running current value I and the rated current value I S.
3. The method of claim 2, wherein the determining whether the air conditioner satisfies the first shutdown condition of the outdoor fan comprises:
When the temperature value T Outer disc of the outdoor coil is larger than or equal to a first preset temperature value T 1 and the temperature value T Outer ring of the outdoor environment-the temperature value T Outer disc of the outdoor coil is smaller than a preset temperature difference value DeltaT, the air conditioner meets a first shutdown condition of an outdoor fan;
And/or; when the temperature value T Outer disc of the outdoor coil is smaller than the first preset temperature value T 1 or the temperature value T Outer ring of the outdoor environment, the temperature value T Outer disc of the outdoor coil is larger than or equal to the preset temperature difference delta T, the air conditioner does not meet the first shutdown condition of the outdoor fan.
4. The method of controlling defrosting of an air conditioner according to claim 3, wherein the judging whether the air conditioner satisfies the first stop condition of the outdoor fan further comprises:
When the air conditioner meets a first shutdown condition of an outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the first shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
5. The method of controlling defrosting of an air conditioner according to claim 3, wherein the judging whether the air conditioner satisfies the second stop condition of the outdoor fan comprises:
When defrosting time T is more than or equal to a first preset time T 1, and the outdoor coil temperature value T Outer disc is more than or equal to a second preset temperature value T 2, or the running current value I is less than or equal to the rated current value I S x (1-D), the air conditioner meets a second shutdown condition of an outdoor fan;
and/or; when the temperature value T Outer disc of the outdoor coil is smaller than a second preset temperature value T 2 and the running current value I is larger than the rated current value I S X (1-D), the air conditioner does not meet a second shutdown condition of the outdoor fan;
Wherein D is a decreasing amplitude of the current when the outdoor fan operates, and the first preset temperature value T 1 and the second preset temperature value T 2 satisfy: t 1＞T2.
6. The method of claim 5, wherein determining whether the air conditioner satisfies a second shutdown condition of an outdoor fan further comprises:
When the air conditioner meets a second shutdown condition of the outdoor fan, the outdoor fan is controlled to be closed; and/or when the air conditioner does not meet the second shutdown condition of the outdoor fan, controlling the outdoor fan to continue to operate in the current operation state.
7. The air conditioner defrosting control method according to any one of claims 1 to 6, characterized in that the control method further comprises:
After the outdoor fan is stopped, judging whether the air conditioner meets the defrosting exit condition according to the relation between the temperature value T Outer disc of the outdoor coil and a third preset temperature value T 3 or the relation between defrosting time T and a second preset time T 2;
if yes, controlling the air conditioner to exit the defrosting mode.
8. The method of claim 7, wherein the determining whether the air conditioner satisfies a defrosting exit condition comprises:
And when the temperature value T Outer disc of the outdoor coil is more than or equal to the third preset temperature value T 3 or the defrosting time T is more than or equal to the second preset time T 2, controlling the air conditioner to exit the defrosting mode.
9. An air conditioner control device, comprising:
The detection module is used for controlling the outdoor fan to operate in a high wind gear when the air conditioner enters a defrosting mode, detecting an outdoor environment temperature value T Outer ring , an outdoor coil temperature value T Outer disc and/or an operating current value I of the outdoor fan and a rated current value I S when the rotating speed of the outdoor fan reaches a rated rotating speed of the high wind gear for the first time;
The control module is used for controlling the air conditioner to enter an outdoor fan adjusting mode according to the outdoor environment temperature value T Outer ring , and controlling the outdoor fan to be closed when the air conditioner meets the shutdown condition of the outdoor fan;
And the judging module is used for judging whether the air conditioner meets the shutdown condition of the outdoor fan according to the temperature value T Outer disc of the outdoor coil, and/or the running current value I and the rated current value I S.
10. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program implementing the air conditioner defrosting control method according to any one of claims 1 to 8 when read by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390012.0A CN115574425B (en) | 2022-11-04 | Air conditioner defrosting control method and device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390012.0A CN115574425B (en) | 2022-11-04 | Air conditioner defrosting control method and device and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115574425A CN115574425A (en) | 2023-01-06 |
| CN115574425B true CN115574425B (en) | 2024-06-04 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729006A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner defrosting control method and device |
| CN104930674A (en) * | 2015-05-14 | 2015-09-23 | 珠海格力电器股份有限公司 | Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system |
| WO2019035198A1 (en) * | 2017-08-17 | 2019-02-21 | 三菱電機株式会社 | Air conditioner |
| CN112032941A (en) * | 2020-08-25 | 2020-12-04 | 海信（山东）空调有限公司 | Control method of air conditioner |
| CN113357751A (en) * | 2021-06-17 | 2021-09-07 | 青岛海尔空调器有限总公司 | Anti-condensation control method and device for air conditioner, air conditioner and storage medium |
| CN113819578A (en) * | 2021-10-25 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and air conditioner |
| CN113864975A (en) * | 2021-09-29 | 2021-12-31 | 珠海格力电器股份有限公司 | Low-temperature refrigeration control method and device of variable frequency air conditioner and air conditioner |
| CN115095955A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729006A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner defrosting control method and device |
| CN104930674A (en) * | 2015-05-14 | 2015-09-23 | 珠海格力电器股份有限公司 | Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system |
| WO2019035198A1 (en) * | 2017-08-17 | 2019-02-21 | 三菱電機株式会社 | Air conditioner |
| CN112032941A (en) * | 2020-08-25 | 2020-12-04 | 海信（山东）空调有限公司 | Control method of air conditioner |
| CN113357751A (en) * | 2021-06-17 | 2021-09-07 | 青岛海尔空调器有限总公司 | Anti-condensation control method and device for air conditioner, air conditioner and storage medium |
| CN113864975A (en) * | 2021-09-29 | 2021-12-31 | 珠海格力电器股份有限公司 | Low-temperature refrigeration control method and device of variable frequency air conditioner and air conditioner |
| CN113819578A (en) * | 2021-10-25 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and air conditioner |
| CN115095955A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 控制挂壁式房间空调器蒸发器温度的方法;莫剑锋;裴东;;家电科技;20130801(第08期);全文 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108759290B (en) | Frequency control method for compressor of variable frequency refrigerator | |
| CN105805892B (en) | A kind of air-conditioning heating control method | |
| CN110594992A (en) | Air conditioner preheating control method and device and air conditioner | |
| CN111981640B (en) | Defrosting control method and device, air conditioner and storage medium | |
| CN111043712A (en) | Defrosting control method and system for heating mode of air conditioner and air conditioner | |
| CN111457540B (en) | Outdoor fan control method and device and air conditioner | |
| CN113405230B (en) | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium | |
| CN113405231B (en) | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium | |
| CN113405229B (en) | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium | |
| CN113028590B (en) | Air conditioner low-temperature refrigeration control method and device and air conditioner | |
| CN111457556A (en) | Anti-freezing protection method and device, air conditioner and computer readable storage medium | |
| CN113405236B (en) | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium | |
| CN111189156A (en) | Cold air prevention control method and device and air conditioner | |
| JP4231247B2 (en) | Air conditioner | |
| CN115574425B (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN112594902B (en) | Control method and system of air conditioner | |
| CN114413413B (en) | Defrosting method of air conditioner and air conditioner | |
| CN113405237B (en) | Air conditioner, high-temperature sterilization and defrosting control method and device thereof and storage medium | |
| CN113654134B (en) | Control method of water chilling unit | |
| CN114593502A (en) | Defrosting control method of air conditioner, controller, air conditioner and storage medium | |
| CN115574425A (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN111720979B (en) | Air conditioner and energy-saving control method thereof | |
| JP2002181367A (en) | Control method for air conditioner | |
| JPH11264599A (en) | Method for controlling air conditioner | |
| CN115597216A (en) | Air conditioner refrigeration control method and device and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |