CN105202695B - The dedusting control method and device of heat exchanger of outdoor machine of air conditioner - Google Patents
The dedusting control method and device of heat exchanger of outdoor machine of air conditioner Download PDFInfo
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- CN105202695B CN105202695B CN201510567730.4A CN201510567730A CN105202695B CN 105202695 B CN105202695 B CN 105202695B CN 201510567730 A CN201510567730 A CN 201510567730A CN 105202695 B CN105202695 B CN 105202695B
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Abstract
The invention discloses a kind of dedusting control method of heat exchanger of outdoor machine of air conditioner, this method includes：Obtain the temperature outside and inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；Judged whether to meet starting dedusting condition according to the temperature outside of the outdoor unit heat exchanger and inside temperature；If the temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting condition, controls outdoor fan reversion and processing is dusted to outdoor unit heat exchanger.The invention also discloses a kind of dedusting control devices of heat exchanger of outdoor machine of air conditioner.Using the present invention, outdoor unit heat exchanger can be dusted automatically, improve the heat transfer effect of outdoor unit heat exchanger.
Description
Technical field
The present invention relates to air-conditioner field more particularly to the dedusting control methods and dress of a kind of heat exchanger of outdoor machine of air conditioner
It sets.
Background technique
In domestic air conditioning manufacturing field, domestic air conditioner mainly includes：Compressor, condenser, throttling set, evaporator four
Big part.Domestic air conditioner is generally air-cooled at present, and heat exchanger is usually air cooling fin formula, i.e., fin covers copper pipe type.Mesh
Preceding some efficient single coolers are in order to improve the monomer exchange capability of heat of condenser, reduce condensation temperature and raising complete machine Energy Efficiency Ratio, room
Outer machine condenser uses the full aluminium condenser of concurrent flow.There are several holes inside every flat tube of the full aluminium condenser of concurrent flow, on hole wall
There is rib, refrigerant will flow in aluminum pipe, have the more screw thread toothing being similar in inner screw thread copper pipe inside aluminium strip, can have
The flow-disturbing of the increase heat exchange area and refrigerant of effect, augmentation of heat transfer effect.Full aluminium condenser has conventional condenser incomparable
Heat transfer effect, unit draught area exchange capability of heat and unit volume exchange capability of heat are considerably beyond conventional condenser.Concurrent flow is complete
The flat tube of aluminium condenser and waveform aluminium strip be by the way that together with wave soldering, surface covering fusing point is lower than the fusing point of aluminium,
It can melt in heating process, be sufficiently combined together with flat tube first.Outdoor unit of the air conditioner is typically mounted at outdoor, concurrent flow
The flat tube of full aluminium condenser is to be arranged in parallel, and fin is waveform, therefore when the fin for the post-condenser for running a period of time
On will be attached with dust and other impurities in ambient enviroment, these dust and other impurities are easy to be deposited in windward side, and due to
A fin pitch of fins is closeer, and dust and other impurities are mainly deposited in fin surface.These dust and other impurities are typically all that the bad of heat is led
Body will affect the heat dissipation effect of condenser, and in addition dust and other impurities can also stop air to flow through condenser surface, reduce heat exchange
Effect.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide a kind of dedusting control method and device of heat exchanger of outdoor machine of air conditioner, purports
Outdoor unit heat exchanger is dusted automatically realizing, improves the heat transfer effect of outdoor unit heat exchanger.
To achieve the above object, the present invention provides a kind of dedusting control method of heat exchanger of outdoor machine of air conditioner, this method
Including：
Obtain the temperature outside and inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；
Judged whether to meet starting dedusting condition according to the temperature outside of the outdoor unit heat exchanger and inside temperature；
If the temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting condition, outdoor fan is controlled
Reversion is dusted processing to outdoor unit heat exchanger.
Preferably, the step of control outdoor fan reversion is dusted processing to outdoor unit heat exchanger include：
It controls outdoor fan and compressor is out of service, and control the first timer and start timing；
When the clocking value of first timer reaches the first preset time, control outdoor fan starts and normally to transport
Opposite direction rotates when row, and control compressor start；And it controls the first timer and restarts timing；
When the clocking value of first timer reaches the second preset time, controls outdoor fan and compressor stops fortune
Row, and control the first timer and restart timing；
When the clocking value of first timer reaches the first preset time, control outdoor fan starts and normally to transport
Line direction rotation, and control compressor start.
Preferably, the temperature outside and inside temperature according to the outdoor unit heat exchanger judges whether that meeting starting removes
The step of dirt condition includes：
Whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than the first preset temperature
Threshold values；
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature threshold values, really
It is fixed to meet starting dedusting condition.
Preferably, whether the temperature difference of the temperature outside for judging the outdoor unit heat exchanger and inside temperature is greater than the
After the step of one preset temperature threshold values, this method further includes：
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature threshold values,
Whether the temperature outside of the outdoor unit heat exchanger of continuous first preset times and the temperature difference of inside temperature are equal after judgement
Greater than the first preset temperature threshold values；
If the temperature difference of the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous first preset times later
It is all larger than the first preset temperature threshold values, determines and meets starting dedusting condition.
Preferably, whether the temperature difference of the temperature outside for judging the outdoor unit heat exchanger and inside temperature is greater than the
After the step of one preset temperature threshold values, this method further includes：
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature less than the first preset temperature threshold values,
Whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than the second preset temperature threshold values；
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the second preset temperature threshold values,
Whether the temperature outside of the outdoor unit heat exchanger of continuous second preset times and the temperature difference of inside temperature are equal after judgement
Greater than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend；
If the temperature difference of the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous second preset times later
It is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend, determines and meet starting dedusting condition.
In addition, to achieve the above object, the present invention also provides a kind of dedusting control device of heat exchanger of outdoor machine of air conditioner,
The device includes：
First temperature sensor, for obtaining the temperature outside of outdoor unit heat exchanger in real time according to prefixed time interval；
Second temperature sensor, for obtaining the inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；
Judgment module judges whether to meet starting for the temperature outside and inside temperature according to the outdoor unit heat exchanger
Dedusting condition；
Control module meets starting dedusting condition for the temperature outside and inside temperature in the outdoor unit heat exchanger
When, control outdoor fan reversion is dusted processing to outdoor unit heat exchanger.
Preferably, the control module includes：
First control unit, it is out of service for controlling outdoor fan and compressor, and control the first timer and start to count
When；
Second control unit, for when the clocking value of first timer reaches the first preset time, outside control room
Blower starting and to operate normally when opposite direction rotates, and control compressor start；And control the first timer again
Start timing；
Third control unit, for when the clocking value of first timer reaches the second preset time, outside control room
Blower and compressor are out of service, and control the first timer and restart timing；
4th control unit, for when the clocking value of first timer reaches the first preset time, outside control room
Blower starts and is rotated with operating normally direction, and control compressor start.
Preferably, the judgment module includes：
First judging unit, for judge the outdoor unit heat exchanger temperature outside and inside temperature temperature difference whether
Greater than the first preset temperature threshold values；
First determination unit, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When one preset temperature threshold values, determines and meet starting dedusting condition.
Preferably, the judgment module further includes：
Second judgment unit, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When one preset temperature threshold values, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous first preset times after judgement
Whether the temperature difference of degree is all larger than the first preset temperature threshold values；
Second determination unit, for the temperature outside of the outdoor unit heat exchanger of continuous first preset times later with
The temperature difference of inside temperature is all larger than the first preset temperature threshold values, determines and meets starting dedusting condition.
Preferably, the judgment module further includes：
Third judging unit, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger is less than the
When one preset temperature threshold values, whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than second
Preset temperature threshold values；
4th judging unit, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When two preset temperature threshold values, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous second preset times after judgement
Whether the temperature difference of degree is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend；
Third determination unit, for the temperature outside of the outdoor unit heat exchanger of continuous second preset times later with
The temperature difference of inside temperature is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and when being in increasing trend, really
It is fixed to meet starting dedusting condition.
The dedusting control method and device of heat exchanger of outdoor machine of air conditioner of the invention, by according to prefixed time interval reality
When obtain outdoor unit heat exchanger temperature outside and inside temperature；According to the temperature outside of the outdoor unit heat exchanger and inside temperature
Degree judges whether to meet starting dedusting condition；If the temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting
Condition then controls outdoor fan reversion and is dusted processing to outdoor unit heat exchanger；I.e. according to the outside temperature of outdoor unit heat exchanger
Degree and inside temperature, it is determined whether need to be dusted outdoor unit heat exchanger processing, in the outside temperature of the outdoor unit heat exchanger
When meeting dedusting condition, control outdoor fan reversion is dusted processing to outdoor unit heat exchanger for degree and inside temperature, realizes certainly
It is dynamic that outdoor unit heat exchanger is dusted, the heat transfer effect of outdoor unit heat exchanger is improved, and be to utilize the original outdoor of outdoor unit
Blower heat exchanging device is dusted, and without increasing fan, can effectively control cost.
Detailed description of the invention
Fig. 1 is the flow diagram of the preferred embodiment of the dedusting control method of the air condition of that present invention outdoor unit heat exchanger；
Fig. 2 a is that the schematic diagram of temperature sensor is arranged in the outside of outdoor heat exchanger in the present invention；
Fig. 2 b is that the schematic diagram of temperature sensor is arranged in the inside of outdoor heat exchanger in the present invention；
Fig. 3 is that control outdoor fan is inverted to outdoor unit in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger
Heat exchanger is dusted the refinement flow diagram of processing；
Fig. 4 is in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger according to the outer of the outdoor unit heat exchanger
Side temperature and inside temperature judge whether the first embodiment refinement flow diagram for meeting starting dedusting condition；
Fig. 5 is in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger according to the outer of the outdoor unit heat exchanger
Side temperature and inside temperature judge whether the second embodiment refinement flow diagram for meeting starting dedusting condition；
Fig. 6 is the structural schematic diagram of the preferred embodiment of the dedusting control device of the air condition of that present invention outdoor unit heat exchanger；
Fig. 7 is the refinement structural representation of the control module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger
Figure；
Fig. 8 is the first embodiment of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger
Refine structural schematic diagram；
Fig. 9 is the second embodiment of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger
Refine structural schematic diagram；
Figure 10 is the 3rd embodiment of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger
Refinement structural schematic diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is the process of the preferred embodiment of the dedusting control method of the air condition of that present invention outdoor unit heat exchanger
Schematic diagram, this method include：
S10, the temperature outside and inside temperature for obtaining outdoor unit heat exchanger in real time according to prefixed time interval.
A temperature sensor, respectively the first temperature sensing is respectively set in the outside of outdoor unit heat exchanger 1 and inside
Device 10 and second temperature sensor 20, as shown in Figure 2 a and 2 b, the heat-transfer surface of outdoor unit heat exchanger 1 are inside.Implement one
In example, temperature sensor can be separately positioned on to the middle part of outdoor unit heat exchanger outside and inside.It is changed by being arranged in outdoor unit
The outside of hot device and the temperature sensor of inside obtain the temperature outside T1 and inside temperature T2 of outdoor unit heat exchanger respectively.The room
Outer machine heat exchanger can be the full aluminium condenser of concurrent flow.
The prefixed time interval can be set as needed, and be such as set as one minute, then obtained outdoor simultaneously every one minute
The temperature outside and inside temperature of machine heat exchanger.
S20, judged whether to meet starting dedusting condition according to the temperature outside and inside temperature of the outdoor unit heat exchanger, if
The temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting condition, then follow the steps S30.
It is common, when accumulation has dust and other impurities and reaches a certain level on outdoor unit heat exchanger, outdoor unit heat exchange
Dust and other impurities on device will affect the heat dissipation effect and heat transfer effect of outdoor unit heat exchanger, so that outer on outdoor unit heat exchanger
Side temperature and inside temperature difference are larger；It therefore, in this step, can be by judging the temperature outside of outdoor unit heat exchanger and interior
Side temperature determines whether to meet starting dedusting condition, to determine the need for being dusted outdoor unit heat exchanger.
S30, control outdoor fan reversion are dusted processing to outdoor unit heat exchanger.
Control outdoor fan (not shown) reversion is dusted processing, so that outdoor fan reversion drives fan blade to generate
Contrary with when outdoor fan normal work is reverse distinguished and admirable, i.e., the wind direction of outdoor fan blows to outside by inside；So as to
Enough effective dust and other impurities removed on outdoor unit heat exchanger, are dusted processing to outdoor unit heat exchanger automatically.In this reality
It applies in example, outdoor fan is arranged on the chassis 30 of air-conditioner outdoor unit, the fan blade face outdoor unit heat exchanger 1 of outdoor fan,
And it is located outside the inside of machine heat exchanger 1, close to second temperature sensor 20.Preferably, the fan blade of outdoor fan is designed to
The structure of larger air quantity can be generated when rotating forward, inverting two kinds.
Using above-described embodiment, by obtaining the temperature outside of outdoor unit heat exchanger and interior in real time according to prefixed time interval
Side temperature；Judged whether to meet starting dedusting condition according to the temperature outside of the outdoor unit heat exchanger and inside temperature；If the room
The temperature outside and inside temperature of outer machine heat exchanger meet starting dedusting condition, then control outdoor fan reversion and exchange heat to outdoor unit
Device is dusted processing；I.e. according to the temperature outside of outdoor unit heat exchanger and inside temperature, it is determined whether need to change outdoor unit
Hot device is dusted processing, when the temperature outside and inside temperature of the outdoor unit heat exchanger meet dedusting condition, outside control room
Blower reversion is dusted processing to outdoor unit heat exchanger, and realization is automatically dusted outdoor unit heat exchanger, improves outdoor unit
The heat transfer effect of heat exchanger, and be dusted using the original outdoor fan heat exchanging device of outdoor unit, without increasing fan, energy
Effective control cost.
It is control outdoor fan reversion in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger referring to Fig. 4, Fig. 4
The refinement flow diagram of processing is dusted to outdoor unit heat exchanger, details are as follows：
S31, control outdoor fan and compressor are out of service, and control the first timer and start timing.
In this step, it while controlling indoor fan original state is kept to run, it will be in the evaporator of indoor unit
Waste cold blowout.In order to invert outdoor fan, then need first in this step, outdoor fan is out of service, rather than directly
Outdoor fan is inverted, the service life of outdoor fan can be improved.
To avoid since outdoor fan is out of service, heat exchanger of outdoor unit can not radiate, and lead to compressor stop jumping, influence
The service life of compressor, in this step, while control outdoor fan is out of service, control compressor is out of service,
Compressor can be effectively protected.
In this step, the first timer of control starts timing, to calculate the outdoor fan duration out of service.
S32, when the clocking value of first timer reaches the first preset time, control outdoor fan starting and with normal
Opposite direction rotates when operation, and control compressor start；And it controls the first timer and restarts timing.
First preset time can be set as needed, and in one embodiment, can set 39 for first preset time
Second.First preset time is that outdoor fan is when receiving halt instruction under normal conditions, from running at high speed stationary state
When required maximum time.
When the clocking value of first timer reaches the first preset time, it is believed that the outdoor fan has changed into static shape
State, then control outdoor fan starting, and to operate normally when opposite direction rotates, when such as operating normally, outdoor fan
Wind direction is that inside is blowed to by outside, then in this step, the wind direction of outdoor fan is that outside is blowed to by inside.
In this step, compressor start is also controlled, so that air conditioner can also continue to realize refrigeration or heating effect, that is, is worked as
Before air conditioner in refrigerating operaton, then continues to realize refrigeration effect, before air conditioner in heating operation, then continue to realize
Heating effect；The delivery temperature for also needing real-time detection compressor, when delivery temperature is greater than default safe temperature threshold values, control
Compressor is out of service.The default safe temperature threshold values can be set as needed, and usually may be configured as 115 DEG C.
In this step, the first timer of control restarts timing, i.e., first resets the count value of the first timer, so
After restart timing, the duration that opposite direction rotates when calculating outdoor fan to operate normally.
S32, when the clocking value of first timer reaches the second preset time, control outdoor fan and compressor and stop
Operation, and control the first timer and restart timing.
Second preset time can be set as needed, and in one embodiment, can set 10 for second preset time
Minute.
When the clocking value of first timer reaches the second preset time, need for outdoor fan to be restored to normal rotation
Turn, then needs first in this step, outdoor fan is out of service, rather than directly directly change to outdoor fan just from reversion
Turn (wind direction of outdoor fan is become into outside-in from inboard to outside), the service life of outdoor fan can be improved.
To avoid since outdoor fan is out of service, heat exchanger of outdoor unit can not radiate, and lead to compressor stop jumping, influence
The service life of compressor, in this step, while control outdoor fan is out of service, control compressor is out of service,
Compressor can be effectively protected.
In this step, the first timer of control restarts timing, i.e., first resets the count value of the first timer, so
After restart timing, to calculate the outdoor fan duration out of service.
S33, when the clocking value of first timer reaches the first preset time, control outdoor fan starting and with normal
Traffic direction rotation, and control compressor start.
When the clocking value of first timer reaches the first preset time, it is believed that the outdoor fan has changed into static shape
State then controls outdoor fan starting, and is rotated with operating normally direction, the wind direction outside-in of outdoor fan.
In this step, compressor start is also controlled, so that air conditioner can also continue to normally realize refrigeration or heating effect,
I.e. before air conditioner in refrigerating operaton, then continues to realize refrigeration effect, before air conditioner in heating operation, then continue
Realize heating effect.
It is to be exchanged heat in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger according to the outdoor unit referring to Fig. 4, Fig. 4
The temperature outside and inside temperature of device judge whether the refinement flow diagram for meeting the first embodiment of starting dedusting condition, in detail
It states as follows：
Whether the temperature difference of S21, the temperature outside for judging the outdoor unit heat exchanger and inside temperature are greater than the first default temperature
Bottom valve value is held if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature threshold values
Row step S22, it is no to then follow the steps S23.
First preset temperature threshold values D can be set as needed, common, can be in outdoor for air conditioner refrigerating operaton
The blocking of machine heat exchanger half (intermediate state for not blocked by dust and all being blocked by dust, i.e. heat exchanger of outdoor unit
Air duct have half draught area be blocked), ambient temperature be 45 DEG C when, measure the outside temperature of heat exchanger of outdoor unit
It is pre- to set first for the difference of the temperature outside of the heat exchanger of outdoor unit measured at this time and inside temperature for degree and inside temperature
If threshold temperature.The first preset temperature threshold values can be usually arranged between 15 DEG C -20 DEG C.
In this step, whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than first
Preset temperature threshold values, if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature valve
Value, then it is assumed that reached dedusting condition, needed to be dusted outdoor unit heat exchanger processing.
S22, satisfaction starting dedusting condition is determined.
Whether the temperature difference of S23, the temperature outside for judging the outdoor unit heat exchanger and inside temperature are greater than the second default temperature
Bottom valve value is held if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the second preset temperature threshold values
Row step S24.
Second preset temperature threshold values B can be set as needed, common, can be in outdoor for air conditioner refrigerating operaton
Machine heat exchanger blocks one third, when ambient temperature is 45 DEG C, measures the temperature outside of heat exchanger of outdoor unit and interior
The difference of the temperature outside of the heat exchanger of outdoor unit measured at this time and inside temperature is set the second preset temperature by side temperature
Threshold values.The second preset temperature threshold values can be usually arranged between 10 DEG C -15 DEG C.
In this step, whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than second
Preset temperature threshold values, if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is less than or equal to the second default temperature
Bottom valve value, then it is assumed that not up to starting dedusting condition, outdoor fan rotates according to normal direction, and the wind direction of outdoor fan is from outer
Lateral inside.
The temperature of the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous second preset times after S24, judgement
Whether degree difference is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend；If continuous later
The temperature outside of the outdoor unit heat exchanger of two preset times and the temperature difference of inside temperature be all larger than the second preset temperature threshold values,
Less than the first preset temperature threshold values and it is in increasing trend, thens follow the steps S22.
Second preset times can be set as needed, common, can set second preset times to five times.
In this step, after judgement the outdoor unit heat exchanger of continuous second preset times temperature outside Yu inside temperature
Whether the temperature difference of degree is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend, as this
Two preset times are five times, and the temperature outside of five outdoor unit heat exchangers and the temperature difference of inside temperature after being somebody's turn to do are respectively △
T1、△T2、△T3、△T4With △ T5, then judge these △ T1、△T2、△T3、△T4With △ T5Whether it is both greater than B, is less than D, and
△T1<△T2<△T3<△T4<△T5, if it is, can determine satisfaction starting dedusting condition.
It is to be exchanged heat in the dedusting control method of the air condition of that present invention outdoor unit heat exchanger according to the outdoor unit referring to Fig. 5, Fig. 5
The temperature outside and inside temperature of device judge whether the refinement flow diagram for meeting the second embodiment of starting dedusting condition, in detail
It states as follows：
Whether the temperature difference of S25, the temperature outside for judging the outdoor unit heat exchanger and inside temperature are greater than the first default temperature
Bottom valve value is held if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature threshold values
Row step S26.
The step is identical with above-mentioned steps S21, and this will not be repeated here.
The temperature of the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous first preset times after S26, judgement
Whether degree difference is all larger than the first preset temperature threshold values；If the outside temperature of the outdoor unit heat exchanger of continuous first preset times later
Degree and the temperature difference of inside temperature are all larger than the first preset temperature threshold values, then follow the steps S27.
First preset times can be set as needed, common, can set second preset times to ten times.
In this step, after judgement the outdoor unit heat exchanger of continuous first preset times temperature outside Yu inside temperature
Whether the temperature difference of degree is all larger than the first preset temperature threshold values, if first preset times are ten times, ten outdoors after being somebody's turn to do
The temperature outside of machine heat exchanger and the temperature difference of inside temperature are respectively △ T11、△T12、△T13、△T14、△T15、△T16、△
T17、△T18、△T19With △ T20, then judge these △ T11、△T12、△T13、△T14、△T15、△T16、△T17、△T18、△T19
With △ T20Whether D is both greater than, if it is, can determine satisfaction starting dedusting condition.
S27, satisfaction starting dedusting condition is determined.
It is the structure of the preferred embodiment of the dedusting control device of the air condition of that present invention outdoor unit heat exchanger referring to Fig. 6, Fig. 6
Schematic diagram, the device include：
First temperature sensor 10, for obtaining the temperature outside of outdoor unit heat exchanger in real time according to prefixed time interval；
Second temperature sensor 20, for obtaining the inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；
Judgment module 30 judges whether to meet starting for the temperature outside and inside temperature according to the outdoor unit heat exchanger
Dedusting condition；
Control module 40 meets starting dedusting condition for the temperature outside and inside temperature in the outdoor unit heat exchanger
When, control outdoor fan reversion is dusted processing to outdoor unit heat exchanger.
The outside of heat exchanger of outdoor unit 1 is arranged in first temperature sensor 10, the second temperature sensor 20 setting
In the inside of heat exchanger of outdoor unit 1, as shown in Figure 2 a and 2 b, the heat-transfer surface of outdoor unit heat exchanger 1 is inside.Implement one
In example, the first temperature sensor 10 and second temperature sensor 20 can be separately positioned on on the outside of outdoor unit heat exchanger and inside
Middle part.Obtain the outside of outdoor unit heat exchanger respectively by the temperature sensor in outside and inside that outdoor unit heat exchanger is arranged in
Temperature T1 and inside temperature T2.The outdoor unit heat exchanger can be the full aluminium condenser of concurrent flow.
The prefixed time interval can be set as needed, and be such as set as one minute, then obtained outdoor simultaneously every one minute
The temperature outside and inside temperature of machine heat exchanger.
It is common, when accumulation has dust and other impurities and reaches a certain level on outdoor unit heat exchanger, outdoor unit heat exchange
Dust and other impurities on device will affect the heat dissipation effect and heat transfer effect of outdoor unit heat exchanger, so that outer on outdoor unit heat exchanger
Side temperature and inside temperature difference are larger；Therefore, the judgment module 30 can by judge outdoor unit heat exchanger temperature outside and
Inside temperature determines whether to meet starting dedusting condition, to determine the need for being dusted outdoor unit heat exchanger.
Control module 40 is when the temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting condition, control
The reversion of outdoor fan (not shown) is dusted processing, so that outdoor fan reversion drives fan blade to generate with outdoor fan just
Often contrary reverse distinguished and admirable when work, i.e., the wind direction of outdoor fan blows to outside by inside；So as to effectively remove
Dust and other impurities on outdoor unit heat exchanger are dusted processing to outdoor unit heat exchanger automatically.In the present embodiment, outdoor wind
Machine is arranged on the chassis 30 of air-conditioner outdoor unit, the fan blade face outdoor unit heat exchanger 1 of outdoor fan, and is located outside machine and changes
The inside of hot device 1, close to second temperature sensor 20.Preferably, the fan blade of outdoor fan is designed to rotating forward, inverting two kinds
In the case of can generate the structure of larger air quantity.
It is the refinement knot of control module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger referring to Fig. 7, Fig. 7
Structure schematic diagram, the control module 40 include：
First control unit 41, it is out of service for controlling outdoor fan and compressor, and control the first timer and start
Timing；
Second control unit 42, for when the clocking value of first timer reaches the first preset time, outside control room
Blower starting and to operate normally when opposite direction rotates, and control compressor start；And it controls the first timer and opens again
Beginning timing；
Third control unit 43, for when the clocking value of first timer reaches the second preset time, outside control room
Blower and compressor are out of service, and control the first timer and restart timing；
4th control unit 44, for when the clocking value of first timer reaches the first preset time, outside control room
Blower starts and is rotated with operating normally direction, and control compressor start.
The first control unit 41 controls indoor fan simultaneously and original state is kept to run, by the evaporator of indoor unit
In waste cold blowout.In order to invert outdoor fan, the first control unit 41 is first out of service by outdoor fan, rather than straight
It connects and inverts outdoor fan, the service life of outdoor fan can be improved.
To avoid since outdoor fan is out of service, heat exchanger of outdoor unit can not radiate, and lead to compressor stop jumping, influence
The use of compressor, therefore first control unit 41, while control outdoor fan is out of service, control compressor stops fortune
Row, can be effectively protected compressor.
The first control unit 41 controls the first timer and starts timing, when calculating out of service lasting of outdoor fan
Between.
First preset time can be set as needed, and in one embodiment, can set 39 for first preset time
Second.First preset time is that outdoor fan is when receiving halt instruction under normal conditions, from running at high speed stationary state
When required maximum time.
After the first control unit 41 control timer starts timing, reach first in the clocking value of first timer
When preset time, it is believed that the outdoor fan has changed into stationary state, then second control unit 42 control outdoor fan opens
It is dynamic, and to operate normally when opposite direction rotates, when such as operating normally, the wind direction of outdoor fan is that inside is blowed to by outside,
The wind direction of second control unit 42 control outdoor fan is that outside is blowed to by inside.
Second control unit 42 also controls compressor start, so that air conditioner can also continue to realize refrigeration effect or heating
Effect then continues to realize refrigeration effect that is, before air conditioner in refrigerating operaton, before air conditioner in heating operation,
Then continue to realize heating effect；The delivery temperature for also needing real-time detection compressor, when delivery temperature is greater than default safe temperature
When threshold values, control compressor is out of service.The default safe temperature threshold values can be set as needed, and usually may be configured as 115 DEG C.
Second control unit 42 controls the first timer and restarts timing, i.e., the count value of the first timer is first clear
Zero, then restart timing, the duration that opposite direction rotates when calculating outdoor fan to operate normally.
Second preset time can be set as needed, and in one embodiment, can set 10 for second preset time
Minute.
After second control unit 42 control timer starts timing, reach second in the clocking value of first timer
It when preset time, needs for outdoor fan to be restored to normal rotation, then outdoor fan is stopped transporting by the third control unit 43
Row, rather than directly by outdoor fan from reversion directly change to rotating forward (by the wind direction of outdoor fan from inboard to outside become from
Outside is inwardly), the service life of outdoor fan can be improved.
To avoid not radiating due to outdoor fan heat exchanger of outdoor unit out of service, leads to compressor stop jumping, influence
The service life of compressor, for the third control unit while control outdoor fan is out of service, control compressor stops fortune
Row, can be effectively protected compressor.
The third control unit 43 controls the first timer and restarts timing, i.e., the count value of the first timer is first clear
Zero, restart timing, then to calculate the outdoor fan duration out of service.
After the third control unit 43 control timer starts timing, reach first in the clocking value of first timer
When preset time, it is believed that the outdoor fan has changed into stationary state, then the 4th control unit 44 control outdoor fan opens
It is dynamic, and rotated with operating normally direction, the wind direction outside-in of outdoor fan.
4th control unit 44 also controls compressor start, so that air conditioner can also continue to normally realize refrigeration or heating
Effect then continues to realize refrigeration effect that is, before air conditioner in refrigerating operaton, before air conditioner in heating operation,
Then continue to realize heating effect.
It is first of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger referring to Fig. 8, Fig. 8
The refinement structural schematic diagram of embodiment, the judgment module include：
First judging unit 31, for judge the outdoor unit heat exchanger temperature outside and inside temperature temperature difference whether
Greater than the first preset temperature threshold values；
First determination unit 32, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When one preset temperature threshold values, determines and meet starting dedusting condition.
First preset temperature threshold values D can be set as needed, common, can be in outdoor for air conditioner refrigerating operaton
The blocking of machine heat exchanger half (intermediate state for not blocked by dust and all being blocked by dust, i.e. heat exchanger of outdoor unit
Air duct have half draught area be blocked), ambient temperature be 45 DEG C when, measure the outside temperature of heat exchanger of outdoor unit
It is pre- to set first for the difference of the temperature outside of the heat exchanger of outdoor unit measured at this time and inside temperature for degree and inside temperature
If threshold temperature.It is common, which can be arranged between 15 DEG C -20 DEG C.
First judging unit 31 judges whether the temperature difference of the temperature outside and inside temperature of the outdoor unit heat exchanger is big
In the first preset temperature threshold values, if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first default temperature
Bottom valve value, then it is assumed that reached dedusting condition, needed to be dusted outdoor unit heat exchanger processing.
It is second of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger referring to Fig. 9, Fig. 9
The refinement structural schematic diagram of embodiment, the judgment module further include：
Second judgment unit 33, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When one preset temperature threshold values, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous first preset times after judgement
Temperature difference whether be all larger than the first preset temperature threshold values；
Second determination unit 34, for the temperature outside of the outdoor unit heat exchanger of continuous first preset times later with
The temperature difference of inside temperature is all larger than the first preset temperature threshold values, determines and meets starting dedusting condition.
First preset times can be set as needed, common, can set second preset times to ten times.
The second judgment unit 33 judgement after continuous first preset times the outdoor unit heat exchanger temperature outside with
Whether the temperature difference of inside temperature is all larger than the first preset temperature threshold values, if first preset times are ten times, ten after being somebody's turn to do
The temperature outside of secondary outdoor unit heat exchanger and the temperature difference of inside temperature are respectively △ T11、△T12、△T13、△T14、△T15、△
T16、△T17、△T18、△T19With △ T20, then judge these △ T11、△T12、△T13、△T14、△T15、△T16、△T17、△
T18、△T19With △ T20Whether D is both greater than, if it is, can determine satisfaction starting dedusting condition.
0, Figure 10 is the of the judgment module in the dedusting control device of the air condition of that present invention outdoor unit heat exchanger referring to Fig.1
The refinement structural schematic diagram of three embodiments, the judgment module further include：
Third judging unit 35, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger is less than the
When one preset temperature threshold values, it is pre- whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than second
If threshold temperature；
4th judging unit 36, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are greater than the
When two preset temperature threshold values, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous second preset times after judgement
Temperature difference whether be all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend；
Third determination unit 37, for the temperature outside of the outdoor unit heat exchanger of continuous second preset times later with
The temperature difference of inside temperature is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and when being in increasing trend, really
It is fixed to meet starting dedusting condition.
Second preset temperature threshold values B can be set as needed, common, can be in outdoor for air conditioner refrigerating operaton
Machine heat exchanger blocks one third, when ambient temperature is 45 DEG C, measures the temperature outside of heat exchanger of outdoor unit and interior
The difference of the temperature outside of the heat exchanger of outdoor unit measured at this time and inside temperature is set the second preset temperature by side temperature
Threshold values.The second preset temperature threshold values can be usually arranged between 10 DEG C -15 DEG C.
The third judging unit 35 judges whether the temperature difference of the temperature outside and inside temperature of the outdoor unit heat exchanger is big
In the second preset temperature threshold values, if the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is less than or equal to second
Preset temperature threshold values, then it is assumed that not up to starting dedusting condition, outdoor fan are rotated according to normal direction, the wind of outdoor fan
To outside-in.
Second preset times can be set as needed, common, can set second preset times to five times.
4th judging unit 36 judgement after continuous second preset times the outdoor unit heat exchanger temperature outside with
Whether the temperature difference of inside temperature is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend,
Such as second preset times are five times, the temperature outside of five outdoor unit heat exchangers after being somebody's turn to do and the temperature difference of inside temperature
It Wei not △ T1、△T2、△T3、△T4With △ T5, then judge these △ T1、△T2、△T3、△T4With △ T5Whether B, small is both greater than
In D, and △ T1<△T2<△T3<△T4<△T5, if it is, can determine satisfaction starting dedusting condition.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of dedusting control method of heat exchanger of outdoor machine of air conditioner, which is characterized in that this method includes：
Obtain the temperature outside and inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；
Judged whether to meet starting dedusting condition according to the temperature outside of the outdoor unit heat exchanger and inside temperature；
If the temperature outside and inside temperature of the outdoor unit heat exchanger meet starting dedusting condition, outdoor fan reversion is controlled
Processing is dusted to outdoor unit heat exchanger；
Wherein, the temperature outside and inside temperature according to the outdoor unit heat exchanger judges whether to meet starting dedusting condition
The step of include：
Whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than the first preset temperature threshold values；
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature less than the first preset temperature threshold values, judges institute
Whether the temperature difference of the temperature outside and inside temperature of stating outdoor unit heat exchanger is greater than the second preset temperature threshold values；
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the second preset temperature threshold values, judge
Whether the temperature outside of the outdoor unit heat exchanger of continuous second preset times is all larger than with the temperature difference of inside temperature later
Second preset temperature threshold values, less than the first preset temperature threshold values and be in increasing trend；
If the temperature difference of the temperature outside and inside temperature of the outdoor unit heat exchanger of continuous second preset times is big later
In the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend, determining satisfaction starting dedusting condition.
2. the dedusting control method of heat exchanger of outdoor machine of air conditioner as described in claim 1, which is characterized in that the control room
The step of reversion of outer blower is dusted processing to outdoor unit heat exchanger include：
It controls outdoor fan and compressor is out of service, and control the first timer and start timing；
When the clocking value of first timer reaches the first preset time, control outdoor fan starting and when operating normally
Opposite direction rotates, and control compressor start；And it controls the first timer and restarts timing；
When the clocking value of first timer reaches the second preset time, controls outdoor fan and compressor is out of service,
And it controls the first timer and restarts timing；
When the clocking value of first timer reaches the first preset time, control outdoor fan starts and with normal operation side
To rotation, and control compressor start.
3. the dedusting control method of heat exchanger of outdoor machine of air conditioner as described in claim 1, which is characterized in that the judgement institute
After the step of whether temperature difference of the temperature outside and inside temperature of stating outdoor unit heat exchanger is greater than the first preset temperature threshold values,
This method further includes：
If the temperature difference of the temperature outside of the outdoor unit heat exchanger and inside temperature is greater than the first preset temperature threshold values, judge
Whether the temperature outside of the outdoor unit heat exchanger of continuous first preset times is all larger than with the temperature difference of inside temperature later
First preset temperature threshold values；
If the temperature difference of the temperature outside and inside temperature of the outdoor unit heat exchanger of continuous first preset times is big later
In the first preset temperature threshold values, determines and meet starting dedusting condition.
4. a kind of dedusting control device of heat exchanger of outdoor machine of air conditioner, which is characterized in that the device includes：
First temperature sensor, for obtaining the temperature outside of outdoor unit heat exchanger in real time according to prefixed time interval；
Second temperature sensor, for obtaining the inside temperature of outdoor unit heat exchanger in real time according to prefixed time interval；
Judgment module judges whether to meet starting dedusting for the temperature outside and inside temperature according to the outdoor unit heat exchanger
Condition；
Control module, when meeting starting dedusting condition for the temperature outside and inside temperature in the outdoor unit heat exchanger, control
Outdoor fan reversion processed is dusted processing to outdoor unit heat exchanger；
Wherein, the judgment module includes：
First judging unit, for judging whether the temperature difference of temperature outside and inside temperature of the outdoor unit heat exchanger is greater than
First preset temperature threshold values；
Third judging unit, the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger are pre- less than first
If when threshold temperature, it is default whether the temperature difference of the temperature outside and inside temperature that judge the outdoor unit heat exchanger is greater than second
Threshold temperature；
4th judging unit, it is pre- that the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger is greater than second
If when threshold temperature, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous second preset times after judgement
Whether temperature difference is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and in increasing trend；
Third determination unit, in the temperature outside of the outdoor unit heat exchanger of continuous second preset times and inside later
The temperature difference of temperature is all larger than the second preset temperature threshold values, less than the first preset temperature threshold values and when being in increasing trend, determines full
Foot starting dedusting condition.
5. the dedusting control device of heat exchanger of outdoor machine of air conditioner as claimed in claim 4, which is characterized in that the control mould
Block includes：
First control unit, it is out of service for controlling outdoor fan and compressor, and control the first timer and start timing；
Second control unit, for controlling outdoor fan when the clocking value of first timer reaches the first preset time
Starting and to operate normally when opposite direction rotates, and control compressor start；And it controls the first timer and restarts
Timing；
Third control unit, for controlling outdoor fan when the clocking value of first timer reaches the second preset time
It is out of service with compressor, and control the first timer and restart timing；
4th control unit, for controlling outdoor fan when the clocking value of first timer reaches the first preset time
Start and rotated with operating normally direction, and control compressor start.
6. the dedusting control device of heat exchanger of outdoor machine of air conditioner as claimed in claim 4, which is characterized in that the judgement mould
Block further includes：
Second judgment unit, it is pre- that the temperature difference for temperature outside and inside temperature in the outdoor unit heat exchanger is greater than first
If when threshold temperature, the temperature outside Yu inside temperature of the outdoor unit heat exchanger of continuous first preset times after judgement
Whether temperature difference is all larger than the first preset temperature threshold values；
Second determination unit, in the temperature outside of the outdoor unit heat exchanger of continuous first preset times and inside later
The temperature difference of temperature is all larger than the first preset temperature threshold values, determines and meets starting dedusting condition.
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| CN201510567730.4A CN105202695B (en) | 2015-09-07 | 2015-09-07 | The dedusting control method and device of heat exchanger of outdoor machine of air conditioner |
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| CN111140990A (en) * | 2019-12-23 | 2020-05-12 | 珠海格力电器股份有限公司 | Filth blockage detection method for air conditioner heat exchanger and air conditioner |
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| CN106871390B (en) * | 2017-04-24 | 2020-04-07 | 广东美的暖通设备有限公司 | Dust removal control method, dust removal control device and air conditioner |
| CN107606741A (en) * | 2017-09-28 | 2018-01-19 | 青岛海尔空调电子有限公司 | The dirty stifled detection control method of air-conditioner outdoor unit |
| CN108444060B (en) * | 2018-02-14 | 2021-04-20 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN108444039B (en) * | 2018-02-14 | 2021-04-20 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner and air conditioner |
| CN108775631A (en) * | 2018-05-15 | 2018-11-09 | 青岛易图令科技有限公司 | Air-conditioner outdoor unit, air-conditioning and snow-removing method |
| CN109579215B (en) * | 2018-11-27 | 2020-07-31 | 奥克斯空调股份有限公司 | Method and device for determining dust deposition of air conditioning equipment |
| CN109654800A (en) * | 2018-12-20 | 2019-04-19 | 合肥美的电冰箱有限公司 | Control method, device and the refrigeration equipment of refrigeration equipment |
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