CN107388658A - A kind of air-conditioning and self-cleaning control method - Google Patents
A kind of air-conditioning and self-cleaning control method Download PDFInfo
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- CN107388658A CN107388658A CN201710557477.3A CN201710557477A CN107388658A CN 107388658 A CN107388658 A CN 107388658A CN 201710557477 A CN201710557477 A CN 201710557477A CN 107388658 A CN107388658 A CN 107388658A
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- refrigerant pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/05—Refrigerant levels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning and self-cleaning control method, belongs to air-conditioning automatically cleaning technical field.Control method includes：Obtain the first refrigerant pressure that target when operation of air conditioner coagulates white pattern cleans heat exchanger；If the first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, control reduces the flow aperture of the throttling arrangement of air-conditioning.Refrigerant pressure of the self-cleaning control method of air-conditioning of the present invention according to acquired in coagulating the white stage, by the flow aperture for adjusting throttling arrangement, to improve the refrigerant pressure in target cleaning heat exchanger, it is set to realize fast rapid hardening frost, accelerate the process in solidifying white stage, improve the self-cleaning operating efficiency of air-conditioning.
Description
Technical field
The present invention relates to air-conditioning automatically cleaning technical field, more particularly to a kind of air-conditioning and self-cleaning control method.
Background technology
The indoor set of air conditioner is to freeze or when heating mode is run, air inlet of the air along indoor set in indoor environment
The inside of machine is got in, and passes through after heat exchanger fin heat exchange and is blown into again in indoor environment by air outlet, in this course, room
The impurity such as the dust that is mingled with interior air, bulky grain thing also can be as air intake air-flow be got in inside machine, although indoor set
The dustproof filter screen installed at air inlet can filter most dust and particulate matter, but still have a small amount of minute dust
Filtering can not be blocked fully, with the long-term use of air conditioner, these dusts can gradually deposit the surface for being attached to heat exchanger fin,
Because the dust thermal conductivity for being covered with heat exchanger outer surface is poor, it can directly influence the heat friendship of heat exchanger fin and room air
Change, therefore, in order to ensure the heat exchange efficiency of indoor set, it is necessary to periodically make cleaning treatment to indoor set.
In general, in the prior art the clean method of air conditioner room unit mainly include manual cleaning and air conditioner automatically cleaning
Two ways, wherein, the self-cleaning mode of air conditioner is broadly divided into solidifying white stage and defrost stage, wherein, in the solidifying white stage, sky
Adjust device first to run in a chiller mode, and increase the refrigerant output quantity to indoor heat exchanger, so that the moisture in room air can
Gradually to condense into frost or ice sheet in the outer surface of heat exchanger, during this, the frost layer of condensation can with dust to combination,
So as to which dust be peeled off from heat exchanger outer surface；Afterwards, run, made outside heat exchanger with heating mode in defrost stage, air conditioner
The frost melting layer that surface is condensed, dust can be also collected in drip tray with the current of thawing, this way it is possible to realize right
The automatically cleaning purpose of air conditioner.
But during existing air conditioner is self-cleaning, the flow aperture of the throttling arrangement in air-conditioning system pipeline compared with
Greatly, cause heat exchanger higher in the refrigerant pressure value for coagulating the white stage, frosting can not be quickly formed, so that press runs are long
Time, target frosting degree requirement could be met.
The content of the invention
The invention provides a kind of air-conditioning and self-cleaning control method, it is intended to solves to change in the air-conditioning automatically cleaning course of work
The problem of refrigerant pressure of hot device is not adapted to.In order to which some aspects of the embodiment to disclosure have a basic understanding, below
Give simple summary.The summarized section is not extensive overview, nor to determine key/critical component or describe this
The protection domain of a little embodiments.Its sole purpose is that some concepts are presented with simple form, in this, as below specifically
Bright preamble.
Technical scheme is used by the present invention solves above-mentioned technical problem：
According to the first aspect of the invention, there is provided a kind of self-cleaning control method of air-conditioning, control method include：Obtain
First refrigerant pressure of target cleaning heat exchanger when taking the operation of air conditioner to coagulate white pattern；If the first refrigerant pressure is more than or equal to
The first preset refrigerant pressure threshold value, control reduce the flow aperture of the throttling arrangement of air-conditioning.
Further, control method also includes：Target when obtaining operation of air conditioner defrost pattern cleans the second of heat exchanger
Refrigerant pressure；If the second refrigerant pressure is less than or equal to the second preset refrigerant pressure threshold value, control reduces throttling arrangement
Flow aperture.
Further, control method also includes：After air-conditioning terminates to run solidifying white pattern, the defrost pattern that brings into operation it
Before, control improves the flow aperture of throttling arrangement.
Further, control reduces the flow aperture of the throttling arrangement of air-conditioning, including：Flow aperture speed of the control to set
Rate gradually reduces the flow aperture of throttling arrangement, until the first refrigerant pressure is less than the first refrigerant pressure threshold value.
Further, control method also includes：Terminate to run after defrost pattern terminates in air-conditioning, control improves throttling dress
The flow put.
According to the second aspect of the invention, a kind of air-conditioning is additionally provided, air-conditioning includes：Pressure sensor, it is used for：Obtain
Target when operation of air conditioner coagulates white pattern cleans the first refrigerant pressure of heat exchanger；Main controller, it is used for：If the first refrigerant pressure
More than or equal to the first preset refrigerant pressure threshold value, control reduces the flow aperture of the throttling arrangement of air-conditioning.
Further, pressure sensor is additionally operable to：The of target cleaning heat exchanger when obtaining operation of air conditioner defrost pattern
Two refrigerant pressures；Main controller is additionally operable to：If the second refrigerant pressure is less than or equal to the second preset refrigerant pressure threshold value, control
Reduce the flow aperture of throttling arrangement.
Further, main controller is additionally operable to：After air-conditioning terminates to run solidifying white pattern, the defrost pattern that brings into operation it
Before, control improves the flow aperture of throttling arrangement.
Further, control reduces the flow aperture of the throttling arrangement of air-conditioning, including：Flow aperture speed of the control to set
Rate gradually reduces the flow aperture of throttling arrangement, until the first refrigerant pressure is less than the first refrigerant pressure threshold value.
Further, main controller is additionally operable to：Terminate to run after defrost pattern terminates in air-conditioning, control improves throttling arrangement
Flow.
It is of the invention to be using beneficial effect possessed by above-mentioned technical proposal：
Refrigerant pressure of the self-cleaning control method of air-conditioning of the present invention according to acquired in coagulating the white stage, is throttled by adjusting
The flow aperture of device, to improve the refrigerant pressure in target cleaning heat exchanger, it is realized fast rapid hardening frost, accelerate solidifying frost
The process in stage, improve the self-cleaning operating efficiency of air-conditioning.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Fig. 1 is the flow chart one of the control method of the present invention according to shown by an exemplary embodiment；
Fig. 2 is the flowchart 2 of the control method of the present invention according to shown by an exemplary embodiment；
Fig. 3 is the flow aperture change schematic diagram of the throttling arrangement of the present invention according to shown by an exemplary embodiment；
Fig. 4 is the structured flowchart of the air-conditioning of the present invention according to shown by an exemplary embodiment.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, it is electric, process and other change.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order operated can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and claims is all obtainable equivalent
Thing.Herein, each embodiment individually or can be represented generally with term " invention ", and it is convenient that this is used for the purpose of,
And if in fact disclosing the invention more than one, the scope for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, such as first and second or the like relational terms be used only for by an entity or operation with
Another entity or operation make a distinction, and any actual relation be present between these entities or operation without requiring or implying
Or order.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so as to
So that process, method or equipment including a series of elements not only include those key elements, but also including being not expressly set out
Other element, or also include for this process, method or the intrinsic key element of equipment.In the feelings not limited more
Under condition, the key element that is limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment
In other identical element also be present.Each embodiment herein is described by the way of progressive, and each embodiment stresses
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For method, product etc. disclosed in example, due to its with embodiment disclosed in method part it is corresponding, so the comparison of description is simple
Single, related part is referring to method part illustration.
Air-conditioning of the present invention includes indoor heat exchanger, outdoor heat exchanger, throttling arrangement and compressor, indoor heat exchanger, outdoor
Heat exchanger, throttling arrangement and compressor connect and compose refrigerant circulation circuit by refrigerant pipeline, and refrigerant passes through refrigerant circulation circuit
Flowed along the flow direction set by different operational modes, realize the functions such as its heating, refrigeration and cleaning.
In embodiment, the operational mode of air-conditioning of the present invention includes refrigeration mode, heating mode and automatically cleaning pattern, its
In, refrigeration mode is typically employed in summer high temperature operating mode, for reducing indoor environment temperature；Heating mode is normally applied in the winter time
Worst cold case, for lifting indoor environment temperature；And automatically cleaning pattern is then generally the free functional mode of user, can change
The more situation of the dust, the dirt that are gathered on hot device, heat exchanging device carry out automated cleaning operation.
In general, because indoor heat exchanger is to be directly used in the heat exchanger for changing Interior Temperature Environment, indoor heat exchanger
Clean-up performance can directly influence the usage experience of user.Therefore, the main application pair of the automatically cleaning pattern of existing air-conditioning
As for indoor heat exchanger, the automatically cleaning process in subsequent embodiment is also the automatically cleaning object with indoor heat exchanger.But this is simultaneously
Do not mean that the control method of the present invention may not apply to the automatically cleaning operation to outdoor heat exchanger, it should be appreciated that if
Existing air-conditioning uses the control method same or like with the present invention to carry out automatically cleaning operation to outdoor heat exchanger, then should also wrap
It is contained within protection scope of the present invention.
Set refrigerant flow direction is that the high temperature refrigerant of compressor discharge first flows through outdoor and changed during operation of air conditioner refrigeration mode
Hot device exchanges heat with outdoor environment, is exchanged heat afterwards in inflow indoor heat exchanger with indoor environment, last refrigerant return to compression
Machine re-starts squeeze operation；During this, the refrigerant for flowing through outdoor heat exchanger releases heat to outdoor environment, flows through interior
The refrigerant of heat exchanger absorbs heat from indoor environment, by refrigerant circulating in refrigerant circulation circuit, can continue
By interior heat be discharged in outdoor environment, so as to reach reduce indoor environment temperature refrigeration purpose.
And the high temperature refrigerant that set refrigerant flow direction refers to compressor discharge when heating mode is run first flows through interior and changed
Hot device exchanges heat with outdoor environment, is exchanged heat afterwards in inflow outdoor heat exchanger with indoor environment, last refrigerant return to compression
Machine re-starts squeeze operation；During this, the refrigerant for flowing through indoor heat exchanger releases heat to indoor environment, flows through outdoor
The refrigerant of heat exchanger absorbs heat from outdoor environment, by refrigerant circulating in refrigerant circulation circuit, can continue
By outdoor heat be discharged into indoor environment, so as to reach improve indoor environment temperature heating purpose.
The automatically cleaning pattern that air-conditioning of the present invention is run mainly includes coagulating white pattern and defrost pattern, the work of air-conditioning automatically cleaning
Flow mainly includes two stages sequentially carried out：White stage and defrost stage are coagulated, wherein, air-conditioning is in the solidifying frost of solidifying white stage running
Pattern, so that the indoor heat exchanger of indoor set coagulates ice frosting；In defrost stage running defrost pattern, so that indoor heat exchanger is
One coagulates the frost thawing condensed in the white stage.
Air-conditioning is in refrigeration mode running, if improved by the power of compressor, the side such as refrigerant output quantity increase
Formula, the low temperature refrigerant amount of input indoor set can be improved, unnecessary refrigerant cold can decline the internal temperature of indoor set,
When temperature inside indoor set is less than solidifying white critical temperature value (such as 0 DEG C), the steam flowed through in the air of indoor set will be gradual
Machine internal condensate is into frost indoors, and therefore, solidifying white stage of automatically cleaning flow of the present invention is in air-conditioning institute in a chiller mode
In the case of the refrigerant flow direction of restriction, by the adjustment to the part operational factor such as compressor, blower fan, throttling arrangement, room is realized
The solidifying frost operation of interior heat exchanger.
In the solidifying white stage, air conditioner is the initial flow aperture using the solidifying white flow aperture of setting as throttling arrangement, this
Invention control method is that the flow aperture of throttling arrangement is adjusted on the basis of white flow aperture is coagulated, to meet solidifying frost
The refrigerant pressure and traffic demand in stage.
And air-conditioning is in heating mode running, because high temperature refrigerant is first to flow through indoor heat exchanger, therefore can be high
The cold of warm refrigerant can raise the internal temperature of indoor set, and the temperature inside machine, which is higher than, indoors coagulates white critical temperature value
When (such as 0 DEG C), the frost condensed in inside indoor set can gradually melt drippage, so as to so that frost and indoor heat exchanger point
From.The defrost stage of automatically cleaning flow of the present invention is in the case of the refrigerant flow direction that air-conditioning is limited with heating mode, is led to
The adjustment to the part operational factor such as compressor, blower fan, throttling arrangement is crossed, realizes the defrosting operation of indoor heat exchanger.
In the solidifying white stage, air conditioner is the initial flow aperture using the defrost flow aperture of setting as throttling arrangement, this
Invention control method is that the flow aperture of throttling arrangement is adjusted on the basis of defrost flow aperture, to meet defrost
The refrigerant pressure and traffic demand in stage.
Fig. 1 is the flow chart one of the automatically cleaning control method of the present invention according to shown by an implementation embodiment.
The invention provides a kind of self-cleaning control method of air-conditioning, available for the automatically cleaning operation to air-conditioning heat exchanger
Control, in the present embodiment, control method mainly includes：
According to the first aspect of the invention, there is provided a kind of self-cleaning control method of air-conditioning, control method include：
S101, the target obtained when operation of air conditioner coagulates white pattern clean the first refrigerant pressure of heat exchanger；
Target cleaning heat exchanger as needs the air-conditioning heat exchanger cleaned, in the present embodiment, target cleaning heat exchange
Device is indoor heat exchanger.
For air-conditioning when performing the automatically cleaning flow that automatically cleaning pattern is limited, air-conditioning runs solidifying white pattern, air-conditioner pipe first
Refrigerant in road is along the identical refrigerant flow direction flowing limited with refrigeration mode, therefore, refrigerant be flow through throttling arrangement it
Afterwards, get in heat exchanger and carry out the solidifying frost of refrigeration cool-down.
During this, refrigerant passes through a reducing pressure by regulating flow in throttling arrangement, and refrigerant pressure changes, throttling arrangement
Flow aperture is bigger, and the fall of refrigerant pressure change is smaller, and the flow aperture of throttling arrangement is smaller, refrigerant pressure change
Fall is bigger.Therefore, if the solidifying white flow aperture of throttling arrangement is larger during air-conditioning automatically cleaning, throttling is flowed through
Refrigerant pressure fall after device is also smaller so that it is higher to get in the refrigerant pressure value of heat exchanger, can not be fast
Speed forms frosting；And if the solidifying white flow aperture of throttling arrangement is smaller during air-conditioning automatically cleaning, then flow through throttling arrangement it
Refrigerant pressure fall afterwards is also bigger so that the refrigerant pressure value for getting in heat exchanger is relatively low, it is possible to quick shape
Into frosting.
Therefore, the first refrigerant pressure of target cleaning heat exchanger can directly influence coagulating when operation of air conditioner coagulates white pattern
White efficiency, the present invention are to clean the refrigerant pressure in heat exchanger according to target the automatically cleaning of air-conditioning is adjusted.
Specifically, air-conditioning is provided with pressure sensor, it can be used for the first refrigerant pressure for detecting target cleaning heat exchanger.Can
Choosing, the pressure sensitive terminal of pressure sensor can be located at the feed liquor port position of target cleaning heat exchanger, or, it is arranged at
The side of the close target cleaning heat exchanger of throttling arrangement.
If S102, the first refrigerant pressure are more than or equal to the first preset refrigerant pressure threshold value, control reduces air-conditioning
The flow aperture of throttling arrangement.
In the present embodiment, the first refrigerant pressure threshold value is preset, can be used for the refrigerant pressure with target cleaning heat exchanger
Power is compared, with so that determine the influence in current refrigerant pressure solidifying white stage self-cleaning to air-conditioning.
Specifically, when the refrigerant pressure of target cleaning heat exchanger is more than or equal to the first refrigerant pressure threshold value, then illustrate
Refrigerant pressure in target cleaning heat exchanger is excessive, the rate reduction of refrigerant heat absorption vaporization, and then causes solidifying white speed also to reduce,
Prevent the hull-skin temperature of target cleaning heat exchanger from reaching the critical-temperature of condensation vapor faster, so that can not quickly carry out
Solidifying frost.
When the refrigerant pressure of target cleaning heat exchanger is less than the first refrigerant pressure threshold value, then illustrate that target cleans heat exchanger
Interior refrigerant pressure is unlikely to excessive, and the speed of refrigerant heat absorption vaporization is very fast so that coagulates white speed and also improves a lot, target is clear
The hull-skin temperature of clean heat exchanger can reach the critical-temperature of condensation vapor faster, meet air-conditioning in self-cleaning solidifying white rank
The solidifying frost of section requires.
Therefore, when the first refrigerant pressure of the target cleaning heat exchanger that pressure sensor detects to obtain is more than or equal in advance
During the first refrigerant pressure threshold value put, the flow aperture for the throttling arrangement for reducing air-conditioning can be controlled, so that the stream of throttling arrangement
Measure aperture to reduce, the fall of refrigerant pressure change becomes greatly, so as to reduce the refrigerant pressure of target cleaning heat exchanger.
Throttling arrangement is carried out in a manner of setting specific discharge aperture and gradually reducing flow aperture specifically, can use
Regulation, for example, when target cleaning heat exchanger refrigerant pressure be more than or equal to the first refrigerant pressure threshold value when, by throttling arrangement from
Initial flow aperture is gradually reduced with 5B/s speed, and detects real-time first refrigerant pressure by pressure sensor repetition
Power, when the first refrigerant pressure is less than the first refrigerant pressure threshold value, then maintain current flow aperture constant, until coagulating the white stage
Terminate.Certainly, if occurring the feelings that refrigerant pressure is more than or equal to the first refrigerant pressure threshold value again in the later stage for coagulating the white stage
Condition, then the flow aperture of throttling arrangement can be readjusted according to above-mentioned flow.
In addition, when the target that pressure sensor detects to obtain first in the solidifying white stage cleans the first refrigerant pressure of heat exchanger
During less than the first preset refrigerant pressure threshold value, then control maintains the current initial flow aperture of throttling arrangement constant.
So, the refrigerant pressure that target can be cleaned to heat exchanger by above-mentioned steps remains at the first refrigerant pressure
Under threshold value, so as to meet that air-conditioning is coagulating the refrigerant pressure requirement in white stage, ensure to coagulate the solidifying white efficiency in white stage, with contracting
Time shared by short air-conditioning automatically cleaning flow.
In addition, air-conditioning perform automatically cleaning pattern limited automatically cleaning flow when, meet coagulate white completion condition after,
Coagulate white pattern to terminate to run, air-conditioning brings into operation defrost pattern, and the refrigerant in air-conditioning duct is along the phase limited with heating mode
With refrigerant flow direction flowing, therefore, refrigerant be flow through indoor heat exchanger carry out heating heating defrost and then via throttling fill
Put and flow to outdoor heat exchanger.
In the present embodiment, air-conditioning is additionally provided with temperature sensor, can be used for the inner coil pipe temperature for detecting indoor apparatus of air conditioner
Degree.Also, when coagulating white completion condition includes the inner coil pipe temperature of indoor set less than solidifying white critical-temperature and continues default first
It is long；After meeting to coagulate white completion condition, then end can be controlled to coagulate white pattern, and switch to defrost pattern operation.
In the defrost stage, the refrigerant of HTHP first flows through indoor heat exchanger, then passes through throttling arrangement, therefore, section
Flow the refrigerant pressure change that the flow aperture of device is bigger, and flow velocity of the refrigerant in air-conditioning duct is faster, in indoor heat exchanger
Fall is bigger, and the flow aperture of throttling arrangement is smaller, and flow velocity of the refrigerant in air-conditioning duct is slower, in indoor heat exchanger
The fall of refrigerant pressure change is smaller.Therefore, if during air-conditioning automatically cleaning throttling arrangement defrost flow aperture
Larger, then the refrigerant pressure fall in indoor heat exchanger is also bigger so that and the refrigerant pressure value of indoor heat exchanger is relatively low,
Cause quickly establish the refrigerant high pressure conditions for defrost；And if the solidifying frost of throttling arrangement flows during air-conditioning automatically cleaning
Amount aperture is smaller, then the refrigerant pressure fall in indoor heat exchanger is also smaller so that the refrigerant pressure of indoor heat exchanger
Value is higher, it is possible to the quick refrigerant high pressure conditions established for defrost.
Therefore, refrigerant pressure of the target cleaning heat exchanger in the defrost stage can directly influence operation of air conditioner and coagulate white pattern
When solidifying white efficiency, the present invention be according to target clean heat exchanger in refrigerant pressure the automatically cleaning of air-conditioning is adjusted.
Specifically, the pressure sensor set by air-conditioning can be also used for detecting the second refrigerant pressure of target cleaning heat exchanger
Power.
So, in the present embodiment, the second refrigerant pressure threshold value is preset, can be used for cold with target cleaning heat exchanger
Matchmaker's pressure is compared, with so that determine the influence of current refrigerant pressure to the air-conditioning self-cleaning defrost stage.
Specifically, when the refrigerant pressure of target cleaning heat exchanger is less than or equal to the second refrigerant pressure threshold value, then illustrate
Refrigerant pressure in target cleaning heat exchanger is too small, the rate reduction of refrigerant heat release, and then causes defrost speed also to reduce, and makes mesh
The hull-skin temperature of the clean heat exchanger of SD can not reach the critical-temperature of frost thawing faster, so that can not quickly be changed
Frost.
When the refrigerant pressure of target cleaning heat exchanger is more than the first refrigerant pressure threshold value, then illustrate that target cleans heat exchanger
Interior refrigerant pressure is unlikely to too small, and the speed of refrigerant heat release is very fast so that defrost speed is also improved a lot, and target cleaning is changed
The hull-skin temperature of hot device can reach the critical-temperature of frost thawing faster, meet air-conditioning in the self-cleaning defrost stage
Defrost requirement.
Therefore, when the second refrigerant pressure of the target cleaning heat exchanger that pressure sensor detects to obtain is less than or equal in advance
During the second refrigerant pressure threshold value put, the flow aperture for the throttling arrangement for reducing air-conditioning can be controlled, so that the stream of throttling arrangement
Measure aperture to reduce, the fall of the refrigerant pressure change in indoor heat exchanger diminishes, so as to improve target cleaning heat exchange
The refrigerant pressure of device.
Throttling arrangement is carried out in a manner of setting specific discharge aperture and gradually reducing flow aperture specifically, can use
Regulation, for example, when target cleaning heat exchanger refrigerant pressure be less than or equal to the second refrigerant pressure threshold value when, by throttling arrangement from
Initial flow aperture is gradually reduced with 5B/s speed, and detects real-time second refrigerant pressure by pressure sensor repetition
Power, when the second refrigerant pressure is more than the second refrigerant pressure threshold value, then maintain current flow aperture constant, until the defrost stage
Terminate.Certainly, if occurring the feelings that refrigerant pressure is less than or equal to the second refrigerant pressure threshold value again in the later stage in defrost stage
Condition, then the flow aperture of throttling arrangement can be readjusted according to above-mentioned flow.
In addition, when pressure sensor detects in the defrost stage obtained the second refrigerant pressure of target cleaning heat exchanger first
During less than the second preset refrigerant pressure threshold value, then control maintains the current initial flow aperture of throttling arrangement constant.
So, the refrigerant pressure that target can be cleaned to heat exchanger by above-mentioned steps remains at the second refrigerant pressure
On threshold value, so as to meet refrigerant pressure requirement of the air-conditioning in the defrost stage, ensure the defrost efficiency in defrost stage, with contracting
Time shared by short air-conditioning automatically cleaning flow.
In addition, air-conditioning perform automatically cleaning pattern limited automatically cleaning flow when, after defrost completion condition is met,
Defrost pattern terminates to run.In the present embodiment, the temperature sensor set by air-conditioning can be also used for detecting indoor apparatus of air conditioner
In the inner coil pipe temperature in defrost stage.Also, condition is completed in defrost includes the inner coil pipe temperature of indoor set higher than solidifying white stagnation temperature
Degree and lasting default second duration；After defrost completion condition is met, then end defrost pattern can be controlled.
In the present embodiment, during solidifying white pattern and defrost pattern switching, compressor is usually air-conditioning of the present invention
Certain time is shut down, so that coagulating most of low temperature refrigerant of indoor heat exchanger in the white stage can be back in compressor, to keep away
Exempting from high temperature refrigerant after switching defrost pattern, with being neutralized in low temperature refrigerant indoors heat exchanger, prevents the thermal loss of high temperature refrigerant.
Therefore, after air-conditioning terminates to run solidifying white pattern, before the defrost pattern that brings into operation, i.e., in the period of compressor shutdown,
The present invention also control improves the flow aperture of throttling arrangement, accelerates flowing of the low temperature refrigerant in air-conditioning duct, makes refrigerant can be with
Backflow can compressor as early as possible.
In the present embodiment, air-conditioning can be with regard to startup optimization automatically cleaning pattern, to be exchanged before air-conditioning uses in firm start
Hot device carries out automatically cleaning operation, ensures to be blown into the air quality of indoor environment after flowing through heat exchanger.
Automatically cleaning operation is either carried out during air-conditioning normal operation refrigeration mode or heating mode, specifically,
User can input automatically cleaning by the control panel on remote control or air-conditioning body and instruct, and so, air-conditioning is receiving certainly
After cleaning instruction, it is possible to perform the operational mode related to automatically cleaning flow.
Therefore, it is necessary to which the operational mode of air-conditioning is back switched into progress certainly after the automatically cleaning flow of air-conditioning terminates
The operational mode before flow is cleaned, for example, under summer high temperature operating mode, air-conditioning typically runs refrigeration mode, therefore, from clearly
After clean flow terminates, air-conditioning reruns refrigeration mode；Or in the winter time under worst cold case, air-conditioning typically runs heating mould
Formula, therefore, after automatically cleaning flow terminates, air-conditioning reruns heating mode.
In the present embodiment, air-conditioning terminate to run defrost pattern terminate after, before the other operational modes of switching, may be used also
The flow of throttling arrangement is improved with control, so, the cold medium flux and refrigerant flow rate for flowing through throttling arrangement can be increased, with envoy
Balance is realized in the both sides of stream device as early as possible, to be advantageous to the regulation of air-conditioning startup of compressor when switching other mode operations.
Fig. 2 is the flowchart 2 of the control method of the present invention according to shown by an exemplary embodiment.
In the application scenarios shown in Fig. 2, the idiographic flow of the self-cleaning control method of the present invention is as follows：
S201, the automatically cleaning instruction for receiving user's input；
In the present embodiment, user inputs default automatically cleaning by the control panel of remote control or air-conditioning body and referred to
Order, the main controller of air-conditioning is after automatically cleaning instruction is received, you can control air-conditioning enters automatically cleaning pattern；
S202, air-conditioning control throttling arrangement to be opened with solidifying white flow aperture to coagulate white mode operation；
In the present embodiment, when air-conditioning is to coagulate white mode operation, the specific control to each part of air-conditioning includes but is not limited to：
Compressor start, and operated with the solidifying white power of setting；
Indoor fan is out of service or is run with low wind speed；
The valve block of four-way valve adjust to refrigeration mode identical valve position position so that refrigerant can be in air-conditioning duct interior edge
Flow to and flow with refrigeration mode identical refrigerant.
S203, pressure sensor detection indoor heat exchanger the first refrigerant pressure；
S204, judge whether the first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, if it is, holding
Row step S205, if it is not, then performing step S206；
S205, control reduce the flow aperture of throttling arrangement, and perform step S203；
In embodiment, carry out reducing flow aperture to coagulate white flow aperture as the initial flow aperture for coagulating the white stage
Regulation；
Specifically, can be with the flow aperture of the specific discharge rate reduction throttling arrangement of setting, for example, 5B/s.
S206, maintain the flow aperture of throttling arrangement constant；
S207, judge whether air-conditioning meets to coagulate white completion condition, if it is, step S208 is performed, if it is not, then performing
Step S206；
In the present embodiment, coagulating white completion condition includes the inner coil pipe temperature of indoor set less than solidifying white critical-temperature and continues
Default first duration；After meeting to coagulate white completion condition, then end can be controlled to coagulate white pattern, and switch to defrost pattern
Operation.
S208, air-conditioning are run with defrost pattern, and control throttling arrangement to be opened with defrost flow aperture；
In the present embodiment, when air-conditioning is run with defrost pattern, the specific control to each part of air-conditioning includes but is not limited to：
Compressor is operated with the defrost power set；
Indoor fan is run with low wind speed or middle wind speed；
The valve block of four-way valve adjust to heating mode identical valve position position so that refrigerant can be in air-conditioning duct interior edge
Flow to and flow with heating mode identical refrigerant.
S209, pressure sensor detection indoor heat exchanger the second refrigerant pressure；
S210, judge whether the second refrigerant pressure is less than or equal to the second preset refrigerant pressure threshold value, if it is, holding
Row step S211, if it is not, then performing step S212；
S211, control reduce the flow aperture of throttling arrangement, and perform step S209；
In embodiment, the initial flow aperture using defrost flow aperture as the defrost stage carries out reducing flow aperture
Regulation；
Specifically, can be with the flow aperture of the specific discharge rate reduction throttling arrangement of setting, for example, 5B/s.
S212, maintain the flow aperture of throttling arrangement constant；
S213, judge whether air-conditioning meets that condition is completed in defrost, if it is, step S214 is performed, if it is not, then performing
Step S212；
In the present embodiment, condition is completed in defrost includes the inner coil pipe temperature of indoor set higher than solidifying white critical-temperature and continues
Default second duration.
S214, air-conditioning terminate defrost pattern, and flow terminates.
Fig. 3 is the flow aperture change schematic diagram of the throttling arrangement of the present invention according to shown by an exemplary embodiment.
Control method in air-conditioning automatically cleaning flow in another embodiment of the present invention shown in Fig. 3, specifically, A-C in figure
Shown is to coagulate the white stage, wherein, it is to coagulate white early stage in stage in A-B, B-C is the solidifying white later stage in stage；Shown in C-E for defrost rank
Section, wherein, C-D is early stage in defrost stage, and D-E is the later stage in defrost stage.
Therefore, in the application scenarios shown in Fig. 3, the specific control of the flow aperture of throttling arrangement in air-conditioning automatically cleaning flow
Method processed is as follows：
Coagulate the white stage：When receiving the automatically cleaning instruction of user's input, air-conditioning enters automatically cleaning flow, and switches to solidifying
White mode operation, and throttling arrangement is adjusted to the default first solidifying white flow aperture and opened, that is, the solidifying white early stage in stage in illustrating
Using numerical value less first coagulate white flow aperture, so, can make the low temperature refrigerant pressure in indoor heat exchanger be maintained at compared with
In low pressure limit, formed so as to accelerate solidifying frost.
The inner coil pipe temperature of indoor heat exchanger is detected by temperature sensor, when inner coil pipe temperature is less than or equal to setting
When target coagulates white temperature, control that the flow aperture of throttling arrangement is coagulated white aperture and improved to second from first and coagulate white flow aperture,
The white later stage in stage is coagulated using the second relatively large solidifying white flow aperture of numerical value, so, can meet to coagulate white temperature strip
In the case of part, the coolant quantity in input indoor heat exchanger is improved, accelerates to coagulate white process.
The defrost stage：When meeting the solidifying white completion condition mentioned in previous embodiment, control air-conditioning switches to defrost
Mode operation, and control the first defrost flow that the flow aperture of throttling arrangement is reduced into setting from the second solidifying white aperture to open
Degree, i.e. later stage in defrost stage so, can be made in indoor heat exchanger using the first relatively large defrost flow aperture of numerical value
High temperature refrigerant pressure is maintained in higher pressure limit, so as to accelerate defrost process.
The inner coil pipe temperature of indoor heat exchanger is detected by temperature sensor, the target that setting is more than when inner coil pipe temperature is coagulated
During white temperature, control and improve the flow aperture of throttling arrangement to the second defrost flow aperture, i.e., solidifying frost from the first defrost aperture
Later stage in stage using the second relatively large defrost flow aperture of numerical value, so, can meet the feelings of defrost temperature conditionss
Under condition, flow rate of the high temperature refrigerant in air-conditioning duct is improved, accelerates the defrost process in later stage in defrost stage.
Fig. 4 is the structured flowchart of the air-conditioning of the present invention according to shown by an exemplary embodiment.
Present invention also offers a kind of air-conditioning 410, air-conditioning 410 includes：
Pressure sensor 411, is used for：Obtain the first refrigerant pressure that target when operation of air conditioner coagulates white pattern cleans heat exchanger
Power；
Main controller 412, is used for：If the first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, control
Reduce the flow aperture of the throttling arrangement of air-conditioning.
In one embodiment, pressure sensor 411 is additionally operable to：Obtain target cleaning heat exchange during operation of air conditioner defrost pattern
Second refrigerant pressure of device；Main controller 412 is additionally operable to：If the second refrigerant pressure is less than or equal to the second preset refrigerant pressure
Threshold value, control reduce the flow aperture of throttling arrangement.
In one embodiment, main controller 411 is additionally operable to：After air-conditioning terminates to run solidifying white pattern, bring into operation defrost
Before pattern, control improves the flow aperture of throttling arrangement.
In one embodiment, control reduces the flow aperture of the throttling arrangement of air-conditioning, including：Control is opened with the flow set
Degree speed gradually reduces the flow aperture of throttling arrangement, until the first refrigerant pressure is less than the first refrigerant pressure threshold value.
In one embodiment, main controller 411 is additionally operable to：Terminate to run after defrost pattern terminates in air-conditioning, control improves
The flow of throttling arrangement.
It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings,
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim
System.
Claims (10)
1. a kind of self-cleaning control method of air-conditioning, it is characterised in that the control method includes：
Obtain the first refrigerant pressure that the target when operation of air conditioner coagulates white pattern cleans heat exchanger；
If first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, control reduces the section of the air-conditioning
Flow the flow aperture of device.
2. control method according to claim 1, it is characterised in that the control method also includes：
Target when obtaining the operation of air conditioner defrost pattern cleans the second refrigerant pressure of heat exchanger；
If second refrigerant pressure is less than or equal to the second preset refrigerant pressure threshold value, control reduces the throttling arrangement
Flow aperture.
3. control method according to claim 2, it is characterised in that the control method also includes：
After the air-conditioning terminates to run the solidifying white pattern, before the defrost pattern that brings into operation, described in control improves
The flow aperture of throttling arrangement.
4. control method according to claim 1, it is characterised in that the control reduces the throttling arrangement of the air-conditioning
Flow aperture, including：
Control gradually reduces the flow aperture of the throttling arrangement with the flow aperture speed set, until the first refrigerant pressure
Power is less than the first refrigerant pressure threshold value.
5. control method according to claim 1, it is characterised in that the control method also includes：
Terminate to run after the defrost pattern terminates in the air-conditioning, control improves the flow of the throttling arrangement.
6. a kind of air-conditioning, it is characterised in that the air-conditioning includes：
Pressure sensor, it is used for：Obtain the first refrigerant pressure that the target when operation of air conditioner coagulates white pattern cleans heat exchanger；
Main controller, it is used for：If first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, control reduces
The flow aperture of the throttling arrangement of the air-conditioning.
7. air-conditioning according to claim 6, it is characterised in that
The pressure sensor is additionally operable to：Target when obtaining the operation of air conditioner defrost pattern cleans the second refrigerant of heat exchanger
Pressure；
The main controller is additionally operable to：If second refrigerant pressure is less than or equal to the second preset refrigerant pressure threshold value, control
System reduces the flow aperture of the throttling arrangement.
8. air-conditioning according to claim 7, it is characterised in that the main controller is additionally operable to：
After the air-conditioning terminates to run the solidifying white pattern, before the defrost pattern that brings into operation, described in control improves
The flow aperture of throttling arrangement.
9. air-conditioning according to claim 6, it is characterised in that the control reduces the flow of the throttling arrangement of the air-conditioning
Aperture, including：
Control gradually reduces the flow aperture of the throttling arrangement with the flow aperture speed set, until the first refrigerant pressure
Power is less than the first refrigerant pressure threshold value.
10. air-conditioning according to claim 6, it is characterised in that the main controller is additionally operable to：
Terminate to run after the defrost pattern terminates in the air-conditioning, control improves the flow of the throttling arrangement.
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| CN201710557477.3A CN107388658A (en) | 2017-07-10 | 2017-07-10 | A kind of air-conditioning and self-cleaning control method |
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| CN201710557477.3A CN107388658A (en) | 2017-07-10 | 2017-07-10 | A kind of air-conditioning and self-cleaning control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019148697A1 (en) * | 2018-02-05 | 2019-08-08 | 青岛海尔空调器有限总公司 | Self-cleaning control method and apparatus for air conditioner |
| WO2021147534A1 (en) * | 2020-01-22 | 2021-07-29 | 青岛海尔空调电子有限公司 | Self-cleaning control method for air conditioner |
| CN113446762A (en) * | 2021-06-22 | 2021-09-28 | 珠海格力电器股份有限公司 | Throttling device, air conditioner self-cleaning device and air conditioner self-cleaning method |
| EP4063756A4 (en) * | 2019-11-27 | 2023-01-11 | GD Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner and self-cleaning control method therefor and device thereof, and storage medium |
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| CN106152413A (en) * | 2016-07-27 | 2016-11-23 | 青岛海尔空调器有限总公司 | Air-conditioning internal-external machine cleaning method |
| CN106556107A (en) * | 2016-11-11 | 2017-04-05 | 青岛海尔空调器有限总公司 | Air-conditioning heat exchanger self cleaning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019148697A1 (en) * | 2018-02-05 | 2019-08-08 | 青岛海尔空调器有限总公司 | Self-cleaning control method and apparatus for air conditioner |
| EP4063756A4 (en) * | 2019-11-27 | 2023-01-11 | GD Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner and self-cleaning control method therefor and device thereof, and storage medium |
| WO2021147534A1 (en) * | 2020-01-22 | 2021-07-29 | 青岛海尔空调电子有限公司 | Self-cleaning control method for air conditioner |
| CN113446762A (en) * | 2021-06-22 | 2021-09-28 | 珠海格力电器股份有限公司 | Throttling device, air conditioner self-cleaning device and air conditioner self-cleaning method |
| CN113446762B (en) * | 2021-06-22 | 2022-03-18 | 珠海格力电器股份有限公司 | Air conditioner self-cleaning device and air conditioner self-cleaning method |
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