CN108758961A - A kind of air-conditioner outdoor unit dust removal method and device - Google Patents
A kind of air-conditioner outdoor unit dust removal method and device Download PDFInfo
- Publication number
- CN108758961A CN108758961A CN201810345641.9A CN201810345641A CN108758961A CN 108758961 A CN108758961 A CN 108758961A CN 201810345641 A CN201810345641 A CN 201810345641A CN 108758961 A CN108758961 A CN 108758961A
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- Prior art keywords
- air
- outdoor unit
- conditioner outdoor
- frosting
- control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
- F24F2221/225—Cleaning ducts or apparatus using a liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of air-conditioner outdoor unit dust removal method of offer of the embodiment of the present invention and device, are related to field of air conditioning, can carry out more thorough dedusting to air-conditioner outdoor unit, improve the heat exchange efficiency of heat exchanger on outdoor unit.This method includes：Determine that air-conditioner outdoor unit meets dedusting control condition；And start frosting control, so that it is stifled to form ice on the heat exchanger of air-conditioner outdoor unit；And determine that air-conditioner outdoor unit meets frosting termination condition；And starts defrosting control, so that forming condensed water on the heat exchanger of air-conditioner outdoor unit, and control fan electromotor positive and negative alternate operating in preset time of air-conditioner outdoor unit.
Description
Technical field
The present embodiments relate to field of air conditioning more particularly to a kind of air-conditioner outdoor unit dust removal method and devices.
Background technology
In air-conditioner outdoor unit, when the dust saved bit by bit on the fin of heat exchanger is excessive, changing for heat exchanger can be caused
The thermal efficiency reduces, while the energy consumption of air-conditioning is increased, and therefore, it is necessary to be dusted to air-conditioner outdoor unit.
Currently, when to air-conditioner outdoor unit dedusting, the drainpipe of indoor unit can be connected to outdoor unit, by the cold of indoor unit
Condensate leads to outdoor unit, and the fin that heat exchanger is then washed away with condensed water is dusted.
In the above method, on the one hand, very high to the installation requirement of air-conditioning when the condensed water of indoor unit is led to outdoor unit；
On the other hand, since the condensed water of indoor unit can only generate in summer, the dedusting of summer air-conditioning outdoor unit, nothing can only be realized
Method carries out the dedusting of outdoor unit in winter.
Invention content
A kind of air-conditioner outdoor unit dust removal method of offer of the embodiment of the present invention and device can carry out more air-conditioner outdoor unit
Thorough dedusting improves the heat exchange efficiency of heat exchanger on outdoor unit.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, the application provides a kind of air-conditioner outdoor unit dust removal method, it is applied to air-conditioner outdoor unit, this method packet
It includes：Determine that air-conditioner outdoor unit meets dedusting control condition；And start frosting control, so that the heat exchanger of air-conditioner outdoor unit
Upper formation ice is stifled；And determine that air-conditioner outdoor unit meets frosting termination condition；Start defrosting control, so that air-conditioner outdoor unit
Condensed water is formed on heat exchanger, and controls fan electromotor positive and negative alternate operating in preset time of the air-conditioner outdoor unit.
In the first optional realization method of first aspect, the method for above-mentioned startup frosting control may include：Root
According to the operational mode of air-conditioner outdoor unit, start frosting control corresponding with operational mode, the operational mode packet of the air-conditioner outdoor unit
Include refrigeration mode and heating mode.
In second of optional realization method of first aspect, above-mentioned dedusting control condition is the fan of air-conditioner outdoor unit
The current flow of motor is more than or equal to dedusting trigger current, and air-conditioner outdoor unit dust removal method provided by the present application can also wrap
It includes：According to the correspondence of the running frequency of the current frequency of fan electromotor and fan electromotor and dedusting trigger current, determine
Dedusting trigger current corresponding with the current frequency of fan electromotor.
In the third optional realization method of first aspect, above-mentioned frosting termination condition is in frosting control time knot
Shu Shi, the current flow of fan electromotor are more than or equal to frosting and control electric current；Air-conditioner outdoor unit dedusting side provided by the present application
Method can also include：Pair of electric current is controlled according to the running frequency of the current frequency of fan electromotor and fan electromotor and frosting
It should be related to, determine that frosting corresponding with the current frequency of fan electromotor controls electric current.
Second aspect, the application provide a kind of air-conditioner outdoor unit dust-extraction unit, which is applied to air-conditioner outdoor unit, the dress
It sets including determining module and starting module.Wherein it is determined that module, for determining that air-conditioner outdoor unit meets dedusting control condition；It opens
Dynamic model block, for starting frosting control, so that it is stifled to form ice on the heat exchanger of air-conditioner outdoor unit；Determining module is additionally operable to
Determine that air-conditioner outdoor unit meets frosting termination condition；Starter is additionally operable to start defrosting control, so that air-conditioner outdoor unit
Condensed water, and fan electromotor positive and negative alternate operating in preset time of control air-conditioner outdoor unit are formed on heat exchanger.
In second of optional realization method of second aspect, above-mentioned dedusting control condition is the fan of air-conditioner outdoor unit
The current flow of motor is more than or equal to dedusting trigger current；Above-mentioned determining module, is additionally operable to according to the current of fan electromotor
The correspondence of frequency and the running frequency of fan electromotor and dedusting trigger current determines the current frequency with fan electromotor
Corresponding dedusting trigger current.
In the third optional realization method of second aspect, above-mentioned frosting termination condition is in frosting control time knot
Shu Shi, the current flow of fan electromotor are more than or equal to frosting and control electric current；Above-mentioned determining module is additionally operable to according to fan electricity
The correspondence of the current frequency of machine and the running frequency of fan electromotor and frosting control electric current, determines and fan electromotor
The corresponding frosting of current frequency controls electric current.
The third aspect, the application provide a kind of air-conditioner outdoor unit, which includes controller, the controller, use
In determining that air-conditioner outdoor unit meets dedusting control condition；And start frosting control, so that the heat exchanger of air-conditioner outdoor unit
Upper formation ice is stifled；And determine that air-conditioner outdoor unit meets frosting termination condition；And start defrosting control, so that outside air conditioning chamber
Condensed water is formed on the heat exchanger of machine, and is controlled the fan electromotor of the air-conditioner outdoor unit positive and negative alternate in preset time and transported
Turn.
In the first optional realization method of the third aspect, above controller is specifically used for according to air-conditioner outdoor unit
Operational mode, start corresponding with operational mode frosting control, the operational mode of the air-conditioner outdoor unit include refrigeration mode with
Heating mode.
In second of optional realization method of the third aspect, the operational mode of above-mentioned air-conditioner outdoor unit is refrigeration mould
Formula；Above controller, the first solenoid valve (12) for being specifically used for control air-conditioner outdoor unit are full-gear, and control the first electricity
The aperture of sub- expansion valve (8) and the second electric expansion valve (13) starts frosting control.
In the third optional realization method of the third aspect, the operational mode of above-mentioned air-conditioner outdoor unit is heating mould
Formula；Above controller is specifically used for the aperture of the first electric expansion valve of control (8) and the second electric expansion valve (13), starts knot
Frost control.
Fourth aspect, the application provide a kind of air-conditioner outdoor unit, which includes processor, memory and storage
On the memory and the computer program that can run on a processor, which realizes above-mentioned when being executed by processor
In first aspect and its various optional realization methods it is one of arbitrary described in air-conditioner outdoor unit dust removal method.
5th aspect, provides a kind of computer readable storage medium, computer is stored on the computer readable storage medium
Program, the computer program realized when being executed by processor in above-mentioned first aspect and its various optional realization methods it is arbitrary it
Air-conditioner outdoor unit dust removal method described in one.
6th aspect, provides a kind of computer program product including computer instruction, when the computer program product exists
When the upper operation of air-conditioner outdoor unit so that terminal device executes arbitrary in above-mentioned first aspect and its various optional realization methods
One of described in air-conditioner outdoor unit dust removal method.
Air-conditioner outdoor unit dust removal method provided by the present application and device, since the controller of air-conditioner outdoor unit can be in determination
When air-conditioner outdoor unit meets dedusting control condition, start frosting control so that ice is formed on the heat exchanger of air-conditioner outdoor unit to be blocked up,
And defrosting control can be started when determining that air-conditioner outdoor unit meets frosting termination condition so that the heat of air-conditioner outdoor unit is handed over
Condensed water is formed on parallel operation, and controls the operating of fan electromotor positive and negative alternate, is removed on heat exchanger by washing away for condensed water
Dust, more thorough dedusting can be carried out to air-conditioner outdoor unit, improve the heat exchange efficiency of heat exchanger on outdoor unit.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of air-conditioner outdoor unit provided in an embodiment of the present invention；
Fig. 2 is a kind of air-conditioner outdoor unit dust removal method schematic diagram one provided in an embodiment of the present invention；
Fig. 3 is a kind of alternate-running schematic diagram of fan electromotor provided in an embodiment of the present invention；
Fig. 4 is a kind of air-conditioner outdoor unit dust removal method schematic diagram two provided in an embodiment of the present invention；
Fig. 5 is a kind of air-conditioner outdoor unit dust removal method schematic diagram three provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of air-conditioner outdoor unit dust-extraction unit provided in an embodiment of the present invention.
Specific implementation mode
Air-conditioner outdoor unit dust removal method provided in an embodiment of the present invention and device are described in detail below in conjunction with the accompanying drawings.
Term " first " and " second " in the specification and claims of the embodiment of the present invention etc. are for distinguishing not
Same object, rather than for the particular order of description object.For example, the first electric expansion valve and the second electric expansion valve valve etc.
It is the particular order for distinguishing different electric expansion valves, rather than for describing electric expansion valve.
In embodiments of the present invention, " illustrative " or " such as " etc. words for indicate make example, illustration or explanation.This
Be described as in inventive embodiments " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as comparing
Other embodiments or design scheme more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words purport
Related notion is being presented in specific ways.
In addition, the term " comprising " and " having " being previously mentioned in description of the invention and their any deformation, it is intended that
It is to cover and non-exclusive includes.Such as process, method, system, product or the equipment for containing series of steps or unit do not have
It is defined in the step of having listed or unit, but further includes the steps that optionally that other are not listed or unit, or optionally
Further include for the intrinsic other steps of these processes, method, product or equipment or unit.
Based on background technology there are the problem of, the embodiment of the present invention provides a kind of air-conditioner outdoor unit dust removal method and device,
Frosting control can be started, so that the heat exchange of air-conditioner outdoor unit when determining that air-conditioner outdoor unit meets dedusting control condition
It is stifled that ice is formed on device；And defrosting control can be started, so as to have leisure when determining that air-conditioner outdoor unit meets frosting termination condition
Adjust and form condensed water on the heat exchanger of outdoor unit, and control air-conditioner outdoor unit fan electromotor in preset time reciprocal cross
For operating, so that the condensed water on heat exchanger washes away the dust on the heat exchanger, air-conditioner outdoor unit can be carried out
More thorough dedusting improves the heat exchange efficiency of heat exchanger on outdoor unit.
Fig. 1 is a kind of structural schematic diagram for air-conditioner outdoor unit that inventive embodiments provide, which includes gas side
Shut-off valve 1, four-way valve 2, gas-liquid separator 3, compressor 4, capillary 5, oil eliminator 6, heat exchanger 7, electric expansion valve 8,
Plate heat exchanger 9, high-pressure reservoir 10, liquid side shut-off valve 11, solenoid valve 12, electric expansion valve 13, solenoid valve 14, solenoid valve
15, solenoid valve 16 and solenoid valve 17.Wherein, the connection relation between all parts of air-conditioner outdoor unit can be with reference chart 1.
In process of refrigerastion, gaseous coolant is by refrigerant air pipe interface, after gas-liquid separator 3, in compressor 4
It is compressed to the gaseous coolant of high temperature and pressure, then the gaseous coolant of the high temperature and pressure passes through heat exchanger 7 and plate heat exchanger
9, become the liquid refrigerants of high pressure medium temperature, is sent into air conditioner indoor unit.
In heating operations, liquid refrigerants becomes gaseous coolant, then by cooling medium liquid interface tube into heat exchanger 7
Again by gas-liquid separator 3, it is compressed to the gaseous coolant of high temperature and pressure in compressor 4, is sent into air conditioner indoor unit.
Air-conditioner outdoor unit provided in an embodiment of the present invention includes controller, which can control air-conditioner outdoor unit and start
Dedusting acts or terminates dedusting action.
As shown in Fig. 2, air-conditioner outdoor unit dust removal method provided in an embodiment of the present invention may include S101-S104：
S101, controller determine that air-conditioner outdoor unit meets dedusting control condition.
Wherein, dedusting control condition is that the current flow of the fan electromotor of air-conditioner outdoor unit is triggered more than or equal to dedusting
Electric current.
In the embodiment of the present invention, when due to accumulating excessive dust on the fin of the heat exchanger of air-conditioner outdoor unit, air-conditioning
The negative pressure of the return side of outdoor unit increases, and therefore, the load of fan electromotor becomes larger, and the electric current of fan electromotor is caused to become larger.In sky
During adjusting outdoor unit operation, controller can detect the current flow of the motor of air-conditioner outdoor unit in real time, and determine wind
Whether the electric current for fanning motor is more than or equal to dedusting trigger current, is more than or equal to dedusting in the current flow of fan electromotor
When trigger current, illustrates that air-conditioner outdoor unit has accumulated excessive dust, need to be dusted, i.e., controller determines air-conditioner outdoor unit
Meet dedusting control condition.
It should be noted that in the embodiment of the present invention, when other failures occur for fan electromotor, it is also possible to lead to fan electromotor
Electric current increase, therefore in order to avoid there is dedusting malfunction, before controller determines the need for being dusted, first determine whether
Whether the driving of fan electromotor breaks down alarm, the alarm if fan electromotor breaks down, first handling failure processing, not into
Row dedusting；The alarm if fan electromotor does not break down, it is determined that air-conditioner outdoor unit meets dedusting control condition.
S102, controller start frosting control, so that it is stifled to form ice on the heat exchanger of air-conditioner outdoor unit.
In the embodiment of the present invention, controller can start and air-conditioner outdoor unit according to the operational mode of air-conditioner outdoor unit
The corresponding frosting control of operational mode, the operational mode of air-conditioner outdoor unit includes refrigeration mode and heating mode.
Optionally, in the embodiment of the present invention, since the operational mode of air-conditioner outdoor unit is divided into refrigeration mode and heating mode,
Therefore in different operational modes, the method for the frosting control of air-conditioner outdoor unit is different, by refrigeration mode in following embodiment
The frosting control of lower air-conditioner outdoor unit is known as frosting control 1, and the frosting control of air-conditioner outdoor unit under heating mode is known as frosting
Control 2 introduces the detailed process of frosting control 1 and frosting control 2 respectively with reference to Fig. 1.
When the operational mode of air-conditioner outdoor unit is refrigeration mode, if air-conditioner outdoor unit meets dedusting control condition, such as Fig. 1 institutes
Show, it is full-gear that the controller of the air-conditioner outdoor unit, which can control the first solenoid valve (i.e. solenoid valve 12 in Fig. 1), and is controlled
Make the first electric expansion valve (i.e. electric expansion valve 8 in Fig. 1) and control the second electric expansion valve (i.e. electronic expansion in Fig. 1
Valve 13) and aperture, start frosting control.
Specifically, in conjunction with Fig. 1, the operating status of all parts of air-conditioner outdoor unit is as shown in table 1 below：
Table 1
| Title | Operating status |
| Gas side shut-off valve 1 | Standard-sized sheet |
| Four-way valve 2 | Refrigeration mode |
| Compressor 4 | High frequency controls |
| Electric expansion valve 8 | Small guide vane controls |
| Liquid side shut-off valve 11 | Standard-sized sheet |
| Solenoid valve 12 | Standard-sized sheet |
| Electric expansion valve 13 | Small guide vane controls |
| Solenoid valve 14 | It is fully closed |
| Solenoid valve 15 | Standard-sized sheet |
| Solenoid valve 16 | It is fully closed |
| Solenoid valve 17 | Standard-sized sheet |
It is in cooling mode, empty in conjunction with the operating status of all parts of above-mentioned air-conditioner outdoor unit in the embodiment of the present invention
It includes cycle 1 and cycle 2 to adjust the frosting control process of outdoor unit：
Cycle 1：Refrigerant air pipe interface → (a) → (b) → (c) → (d) → (e) → (f) → (g) → (p) → (q) → (l)
→ (m) → (n) → cooling medium liquid interface tube
In process of refrigerastion, gaseous coolant from pipeline path of the refrigerant air pipe interface in above-mentioned cycle 1 within the compressor
Become high pressure gaseous refrigerant and then become high pressure medium temperature liquid refrigerants in plate heat exchanger, is punished at two at (m)
Road passes through (n) and high pressure medium temperature liquid refrigerants is sent into indoor unit, realizes refrigeration, another way is in the partial high pressure that will be formed all the way
The liquid refrigerants access cycle 2 of temperature.
Cycle 2：(m) → (r) → (s) → (j) → (i) → (h) → (t) → (b) → access cycle 1
In the embodiment of the present invention, becomes full-gear since above controller controls the first solenoid valve, changed through board-like
The liquid refrigerants for the partial high pressure medium temperature that hot device is formed can access cycle 2, and heat absorption evaporation in a heat exchanger becomes low temperature gas
During state refrigerant, ice is formed on the heat exchanger and is blocked up, realizes frosting；Then cryogenic gaseous refrigerant can through (h) → (t) →
(b) cycle 1 is accessed again, carries out circularly cooling and frosting.
Optionally, in the embodiment of the present invention, the aperture of the first electric expansion valve and the second electric expansion valve, example can be controlled
Aperture as reduced the two electric expansion valves, in this way, frosting can be accelerated.
When the operational mode of air-conditioner outdoor unit is heating mode, if air-conditioner outdoor unit meets dedusting control condition, such as Fig. 1 institutes
Show, the controller of the air-conditioner outdoor unit can control the first electric expansion valve (i.e. electric expansion valve 8 in Fig. 1) and the second electronics
The aperture of expansion valve (i.e. electric expansion valve 13 in Fig. 1) reduces the aperture of the two electric expansion valves, starts frosting control
System.
Specifically, in conjunction with Fig. 1, the operating status of all parts of air-conditioner outdoor unit is as shown in table 2 below：
Table 2
| Title | Operating status |
| Gas side shut-off valve 1 | Standard-sized sheet |
| Four-way valve 2 | Heating mode |
| Compressor 4 | High frequency controls |
| Electric expansion valve 8 | Small guide vane controls |
| Liquid side shut-off valve 11 | Standard-sized sheet |
| Solenoid valve 12 | Standard-sized sheet |
| Electric expansion valve 13 | Small guide vane controls |
| Solenoid valve 14 | It is fully closed |
| Solenoid valve 15 | It is fully closed |
| Solenoid valve 16 | Standard-sized sheet |
| Solenoid valve 17 | It is fully closed |
It is in a heating mode, empty in conjunction with the operating status of all parts of above-mentioned air-conditioner outdoor unit in the embodiment of the present invention
It includes following cycles 3 to adjust the frosting control process of outdoor unit：
Cycle 3：Cooling medium liquid interface tube → (n) → (r) → (s) → (j) → (i) → (h) → (g) → (c) → (d) → (e)
→ (f) → (b) → (a) → refrigerant air pipe interface
In heating operations, liquid refrigerants from cooling medium liquid interface tube along above-mentioned cycle 3 pipeline path in a heat exchanger
Heat absorption evaporation become cryogenic gaseous refrigerant, after then becoming high pressure gaseous refrigerant within the compressor again, through by (f) →
(b) high-temperature gas refrigerant is sent into indoor unit by → (a), realizes heating；Simultaneously as above controller controls the first electronic expansion
The aperture of valve and the second electric expansion valve becomes smaller, thus above-mentioned liquid refrigerants from cooling medium liquid interface tube along the pipeline of above-mentioned cycle 3
Path is absorbed heat in a heat exchanger during evaporation becomes cryogenic gaseous refrigerant, and it is stifled to form ice on the heat exchanger, realizes knot
Frost.
S103, controller determine that air-conditioner outdoor unit meets frosting termination condition.
Wherein, frosting termination condition is the current electricity of the fan electromotor of air-conditioner outdoor unit at the end of frosting control time
Stream is more than or equal to frosting and controls electric current.
In the embodiment of the present invention, when the current flow that the fan of air-conditioner outdoor unit is clicked is more than or equal to frosting control electricity
When stream, illustrate that enough ice has been formed on the heat exchanger of the air-conditioner outdoor unit to be blocked up, and frosting control can be terminated.
It should be noted that in the embodiment of the present invention, in preset one section of frosting control time, frosting control is carried out,
It is blocked up so that forming ice on heat exchanger, it, may be due to the limitation of some conditions, such as air during practical frosting controls
Humidity is relatively low, the ice of formation block up it is very few, at the end of frosting control time, the current flow of the fan electromotor of air-conditioner outdoor unit
Electric current is controlled less than frosting, then air-conditioner outdoor unit exits frosting control, and sends out hand-driven dust prompting.
S104, controller start defrosting control, and the fan electromotor for controlling air-conditioner outdoor unit is positive and negative in preset time
Alternate-running.
In the embodiment of the present invention, after controller completes frosting control, controller can start defrosting control, so that on
Stating the ice formed on heat exchanger and blocking up becomes condensed water, and the fan electromotor for controlling air-conditioner outdoor unit is positive and negative in preset time
Alternate-running, to which condensed water can wash away the dust on the heat exchanger.
Above-mentioned preset time can be understood as the cycle of operation of the positive and negative operating of fan electromotor, in the cycle of operation, can control
Fan electromotor processed controls the fan electromotor with maximum with the maximum frequency of operation Positive work predetermined number of times of the fan electromotor
Running frequency antiport predetermined number of times.Illustratively, as shown in Figure 3, it is assumed that above-mentioned preset time is T, in T time section,
Fan electromotor is positive, antiport number is 3 times, then the positive or reversed time operated every time is T/6, can specifically be joined
The alternate-running schematic diagram of fan electromotor as shown in Figure 3.
Optionally, the fan electromotor of control air-conditioner outdoor unit is opened while above controller can control startup defrosting control
Beginning positive and negative alternate operates, i.e., side is defrosted, and lateral dominance washes away the dust on heat exchanger with the condensed water formed；Or it is defrosting
Control terminates and then control fan electromotor starts positive and negative alternate operating, is washed away on heat exchanger using the condensed water of formation
Dust can specifically be controlled according to actual conditions, and the embodiment of the present invention is not construed as limiting.
Optionally, in conjunction with Fig. 2, as shown in figure 4, before above-mentioned S101, air-conditioner outdoor unit provided in an embodiment of the present invention
Dust removal method can also include S105-S106：
S105, the current flow for detecting fan electromotor.
In the embodiment of the present invention, during fan electromotor normal operation, it is possible to implement the electric current of fan electromotor is detected,
The electric current detected in real time is the current flow of fan electromotor, for determining whether air-conditioner outdoor unit needs dedusting.
S106, pair according to the running frequency and dedusting trigger current of the current frequency and fan electromotor of fan electromotor
It should be related to, determine dedusting trigger current corresponding with the current frequency of fan electromotor.
Optionally, in the embodiment of the present invention, when air-conditioner outdoor unit does not accumulate dust, heat exchanger 1/2 can be blocked
Influence of the area simulation dust to fan electromotor, tested, and using 1HZ as interval, test different running frequencies respectively
Under, the electric current of fan electromotor, using the corresponding electric current of running frequency as dedusting trigger current, then by the operation of fan electromotor frequency
Rate and the correspondence of dedusting trigger current are stored in the memory module of air-conditioner outdoor unit.
Illustratively, it is assumed that the maximum frequency of operation of fan electromotor is 10HZ, such as the running frequency that the following table 3 is fan electromotor
With the correspondence between dedusting trigger current.
Table 3
| The running frequency (HZ) of fan electromotor | Dedusting trigger current (A) |
| 1 | 1.2 |
| 2 | 1.4 |
| 3 | 1.6 |
| 4 | 1.8 |
| 5 | 2.0 |
| 6 | 2.1 |
| 7 | 2.2 |
| 8 | 2.3 |
| 9 | 2.4 |
| 10 | 2.5 |
In the embodiment of the present invention, in conjunction with above-mentioned table 3, detection obtains the current flow of fan electromotor, and according to fan electricity
After the current running frequency of machine determines dedusting trigger current corresponding with the current operation frequency, controller can compare wind
The current flow and dedusting trigger current for fanning motor, determine whether air-conditioner outdoor unit meets dedusting control condition.
Optionally, in conjunction with Fig. 4, as shown in figure 5, before above-mentioned S103, air-conditioner outdoor unit provided in an embodiment of the present invention
Dust removal method can also include S107-S108：
S107, the current flow for detecting fan electromotor.
In the embodiment of the present invention, the electric current of fan electromotor can be detected in real time during frosting controls, at this point, the reality
When the electric current that detects for determining whether air-conditioner outdoor unit needs to continue frosting.
S108, pair for controlling electric current with frosting according to the current frequency of fan electromotor and the running frequency of fan electromotor
It should be related to, determine that frosting corresponding with the current frequency of fan electromotor controls electric current.
Optionally, in the embodiment of the present invention, can block heat exchanger 4/5 area simulation ice it is stifled tested, and
It using 1HZ as interval, tests respectively under different running frequencies, the electric current of fan electromotor, using the corresponding electric current of running frequency as knot
Frost control electric current, then correspondence that the running frequency of fan electromotor is controlled to electric current with frosting are stored in depositing for air-conditioner outdoor unit
It stores up in module.
Illustratively, it is assumed that the maximum frequency of operation of fan electromotor is 10HZ, such as the running frequency that the following table 4 is fan electromotor
The correspondence between electric current is controlled with frosting.
Table 4
| The running frequency (HZ) of fan electromotor | Frosting controls electric current (A) |
| 1 | 2.0 |
| 2 | 2.2 |
| 3 | 2.4 |
| 4 | 2.6 |
| 5 | 2.8 |
| 6 | 2.9 |
| 7 | 3.0 |
| 8 | 3.1 |
| 9 | 3.2 |
| 10 | 3.3 |
In the embodiment of the present invention, in conjunction with above-mentioned table 4, detection obtains the current flow of fan electromotor, and according to fan electricity
After the current running frequency of machine determines frosting control electric current corresponding with the current operation frequency, controller can compare wind
The current flow and frosting for fanning motor control electric current, determine whether air-conditioner outdoor unit meets frosting termination condition.
Optionally, after the primary dedusting for completing air-conditioner outdoor unit according to the method described above, controller can also detect again
The current flow of fan electromotor, and judge whether outdoor machine of air-conditioner also needs to dedusting again.If the current flow of fan electromotor
Still above or equal to dedusting trigger current, then dedusting again, i.e. controller are carried out to air-conditioner outdoor unit according to above-mentioned steps
Continue to execute above-mentioned S101-S104.When the dedusting number of air-conditioner outdoor unit is more than default dedusting number, the electric current of fan electromotor
Still above dedusting trigger current, air-conditioner outdoor unit will move out dedusting, into normal operational mode, be sent out by air-conditioner outdoor unit
Go out hand-driven dust prompting.
Air-conditioner outdoor unit dust removal method provided in an embodiment of the present invention, since the controller of air-conditioner outdoor unit can be in determination
When air-conditioner outdoor unit meets dedusting control condition, start frosting control so that ice is formed on the heat exchanger of air-conditioner outdoor unit to be blocked up,
And defrosting control can be started when determining that air-conditioner outdoor unit meets frosting termination condition so that the heat of air-conditioner outdoor unit is handed over
Condensed water is formed on parallel operation, and controls the operating of fan electromotor positive and negative alternate, is removed on heat exchanger by washing away for condensed water
Dust, more thorough dedusting can be carried out to air-conditioner outdoor unit, improve the heat exchange efficiency of heat exchanger on outdoor unit.
As shown in fig. 6, the embodiment of the present invention provides a kind of air-conditioner outdoor unit dust-extraction unit, the air-conditioner outdoor unit dust-extraction unit
Including：Determining module 20 and starting module 21.Determining module 20, for determining that air-conditioner outdoor unit meets dedusting control condition；It opens
Dynamic model block 21, for starting frosting control, so that it is stifled to form ice on the heat exchanger of air-conditioner outdoor unit；Determining module 20, also
For determining that air-conditioner outdoor unit meets frosting termination condition；Starter 21 is additionally operable to start defrosting control, so that air conditioning chamber
Form condensed water on the heat exchanger of outer machine, and control air-conditioner outdoor unit fan electromotor in preset time positive and negative alternate transport
Turn.
Optionally, above-mentioned starting module 21 is specifically used for the operational mode according to air-conditioner outdoor unit, startup and operational mode
Corresponding frosting control, the operational mode of the air-conditioner outdoor unit includes refrigeration mode and heating mode.
Optionally, above-mentioned dedusting control condition is more than or equal to for the current flow of the fan electromotor of air-conditioner outdoor unit and removes
Dirt trigger current；Determining module 20, be additionally operable to according to the running frequency of the current frequency of fan electromotor and fan electromotor with remove
The correspondence of dirt trigger current determines dedusting trigger current corresponding with the current frequency of fan electromotor.
Optionally, above-mentioned frosting termination condition is at the end of frosting control time, and the current flow of fan electromotor is more than
Or control electric current equal to frosting；Above-mentioned determining module 20 is additionally operable to current frequency and fan electromotor according to fan electromotor
Running frequency and frosting control electric current correspondence, determine that frosting control corresponding with the current frequency of fan electromotor is electric
Stream.
In conjunction with Fig. 1, the embodiment of the present invention provides a kind of air-conditioner outdoor unit, which includes as shown in Figure 1 each
A component, and the air-conditioner outdoor unit further includes controller, and the controller is for determining that air-conditioner outdoor unit meets dedusting control strip
Part；And start frosting control, so that it is stifled to form ice on the heat exchanger of air-conditioner outdoor unit；And determine that air-conditioner outdoor unit is full
Sufficient frosting termination condition；And start defrosting control, so that condensed water is formed on the heat exchanger of air-conditioner outdoor unit, and control
The fan electromotor of air-conditioner outdoor unit processed positive and negative alternate in preset time operates.
Optionally, above controller is specifically used for the operational mode according to air-conditioner outdoor unit, starts corresponding with operational mode
Frosting control, the operational mode of the air-conditioner outdoor unit includes refrigeration mode and heating mode.
When the operational mode of air-conditioner outdoor unit is refrigeration mode, above controller is specifically used for control air-conditioner outdoor unit
The first solenoid valve (i.e. solenoid valve 12 in Fig. 1) be full-gear, and control the first electric expansion valve (i.e. electricity in Fig. 1
Sub- expansion valve 8) and the second electric expansion valve (i.e. electric expansion valve 13 in Fig. 1) aperture, start frosting control.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be expressed in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that an air conditioner executes each embodiment institute of the present invention
The method stated.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. a kind of air-conditioner outdoor unit dust removal method, which is characterized in that it is applied to air-conditioner outdoor unit, the method includes：
Determine that the air-conditioner outdoor unit meets dedusting control condition；
Start frosting control, so that it is stifled to form ice on the heat exchanger of the air-conditioner outdoor unit；
Determine that the air-conditioner outdoor unit meets frosting termination condition；
Start defrosting control, so that forming condensed water on the heat exchanger of the air-conditioner outdoor unit, and controls the air-conditioning
The fan electromotor of outdoor unit positive and negative alternate in preset time operates.
2. according to the method described in claim 1, it is characterized in that, the startup frosting control, including：
According to the operational mode of the air-conditioner outdoor unit, start frosting control corresponding with the operational mode, the air conditioning chamber
The operational mode of outer machine includes refrigeration mode and heating mode.
3. method according to claim 1 or 2, which is characterized in that the dedusting control condition is the air-conditioner outdoor unit
Fan electromotor current flow be more than or equal to dedusting trigger current；The method further includes：
It is corresponding with dedusting trigger current according to the running frequency of the current frequency of the fan electromotor and the fan electromotor
Relationship determines dedusting trigger current corresponding with the current frequency of the fan electromotor.
4. method according to claim 1 or 2, which is characterized in that the frosting termination condition is in frosting control time
At the end of, the current flow of the fan electromotor is more than or equal to frosting and controls electric current；The method further includes：
According to the running frequency of the current frequency of the fan electromotor and the fan electromotor the corresponding of electric current is controlled with frosting
Relationship determines that frosting corresponding with the current frequency of the fan electromotor controls electric current.
5. a kind of air-conditioner outdoor unit dust-extraction unit, which is characterized in that described device is applied to the air-conditioner outdoor unit, described device
Including determining module and starting module；
The determining module, for determining that the air-conditioner outdoor unit meets dedusting control condition；
The starting module, for starting frosting control, so that it is stifled to form ice on the heat exchanger of the air-conditioner outdoor unit；
The determining module is additionally operable to determine that the air-conditioner outdoor unit meets frosting termination condition；
The starter is additionally operable to start defrosting control, so that forming condensation on the heat exchanger of the air-conditioner outdoor unit
Water, and control fan electromotor positive and negative alternate operating in preset time of the air-conditioner outdoor unit.
6. device according to claim 5, which is characterized in that
The starting module is specifically used for the operational mode according to the air-conditioner outdoor unit, starts corresponding with the operational mode
Frosting control, the operational mode of the air-conditioner outdoor unit includes refrigeration mode and heating mode.
7. device according to claim 5 or 6, which is characterized in that the dedusting control condition is the air-conditioner outdoor unit
Fan electromotor current flow be more than or equal to dedusting trigger current；
The determining module is additionally operable to the running frequency of the current frequency and the fan electromotor according to the fan electromotor
With the correspondence of dedusting trigger current, dedusting trigger current corresponding with the current frequency of the fan electromotor is determined.
8. device according to claim 5 or 6, which is characterized in that the frosting termination condition is in frosting control time
At the end of, the current flow of the fan electromotor is more than or equal to frosting and controls electric current；
The determining module is additionally operable to the running frequency of the current frequency and the fan electromotor according to the fan electromotor
The correspondence of electric current is controlled with frosting, determines that frosting corresponding with the current frequency of the fan electromotor controls electric current.
9. a kind of air-conditioner outdoor unit, which is characterized in that including controller；
The controller, for determining that the air-conditioner outdoor unit meets dedusting control condition；And start frosting control, so that
It is stifled that ice is formed on the heat exchanger of the air-conditioner outdoor unit；And determine that the air-conditioner outdoor unit meets frosting termination condition；And
And start defrosting control, so that condensed water is formed on the heat exchanger of the air-conditioner outdoor unit, and the control air conditioning chamber
The fan electromotor of outer machine positive and negative alternate in preset time operates.
10. air-conditioner outdoor unit according to claim 9, which is characterized in that
The controller is specifically used for the operational mode according to the air-conditioner outdoor unit, starts corresponding with the operational mode
Frosting controls, and the operational mode of the air-conditioner outdoor unit includes refrigeration mode and heating mode.
11. air-conditioner outdoor unit according to claim 9 or 10, which is characterized in that the operational mode of the air-conditioner outdoor unit
For refrigeration mode；
The controller, the first solenoid valve (12) for being specifically used for controlling the air-conditioner outdoor unit is full-gear, and is controlled
The aperture of first electric expansion valve (8) and the second electric expansion valve (13) starts frosting control.
12. air-conditioner outdoor unit according to claim 9, which is characterized in that the operational mode of the air-conditioner outdoor unit is system
Heat pattern；
The controller is specifically used for the aperture of the first electric expansion valve of control (8) and the second electric expansion valve (13), starts knot
Frost control.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810345641.9A CN108758961B (en) | 2018-04-17 | 2018-04-17 | Dust removal method and device for outdoor unit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810345641.9A CN108758961B (en) | 2018-04-17 | 2018-04-17 | Dust removal method and device for outdoor unit of air conditioner |
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| CN108758961A true CN108758961A (en) | 2018-11-06 |
| CN108758961B CN108758961B (en) | 2021-02-02 |
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| CN201810345641.9A Active CN108758961B (en) | 2018-04-17 | 2018-04-17 | Dust removal method and device for outdoor unit of air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110986246A (en) * | 2019-11-06 | 2020-04-10 | 青岛海尔空调器有限总公司 | Air conditioner and self-cleaning control method of fan and air duct thereof |
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| CN108758961B (en) | 2021-02-02 |
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