CN104165443B - Air conditioning unit mode conversion control method and device and air conditioning system - Google Patents
Air conditioning unit mode conversion control method and device and air conditioning system Download PDFInfo
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- CN104165443B CN104165443B CN201410395367.8A CN201410395367A CN104165443B CN 104165443 B CN104165443 B CN 104165443B CN 201410395367 A CN201410395367 A CN 201410395367A CN 104165443 B CN104165443 B CN 104165443B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 232
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 360
- 238000005057 refrigeration Methods 0.000 claims abstract description 231
- 238000011084 recovery Methods 0.000 claims abstract description 46
- 230000009466 transformation Effects 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims 1
- 238000010977 unit operation Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses an air conditioning unit mode conversion control method, an air conditioning unit mode conversion control device and an air conditioning system. The method comprises the following steps: after the air conditioning unit operates for a first preset time in the current operation mode, judging the quantity of the required refrigeration compressors and the quantity of the required hot water compressors; obtaining the next operation mode of the air conditioning unit according to the required number of the refrigeration compressors and the required number of the hot water compressors; judging whether the next operation mode is the same as the current operation mode of the air conditioning unit or not; if so, controlling the air conditioning unit to continuously operate the current operation mode; if not, the air conditioning unit is controlled to be shut down in the current operation mode for a second preset time, and then the next operation mode is operated. The air conditioning unit operation mode switching system can automatically switch the operation mode of the air conditioning unit, starts the corresponding operation mode according to the requirement, can meet the actual use requirement of a user, and can reach the temperature set by the user more quickly. And the required quantity of the compressors of the system is judged while the air conditioning unit operates, so that the heat recovery efficiency is improved.
Description
Technical field
The present invention relates to field of air conditioning, particularly relate to a kind of air conditioning unit patten transformation control method, device and air-conditioning system
System.
Background technology
Heat recovery air conditioner unit utilizes condenser heat rejection to produce domestic hot-water, can either discharge by recovering condensing heat, provides again
Domestic hot-water, possesses refrigeration, heats and three kinds of functions of hot water.Annual provide hot water, cooling in summer, heat winter, according to
Family is arranged and actual condition carries out five kinds of patterns and (refrigeration mode, heating mode, refrigeration heat recovery mode, heats heat recovery mode
With water heating pattern) operation, Schema control is more complicated.
The patent of CN201210328459.5 discloses air cooling module recuperation of heat control method, use air-conditioning return water temperature,
Hot water temperature arranges temperature with cooling/heating respectively, hot water arranges temperature and compares, and carries out freezing, heats, water heating mould
Formula judges, when reaching to arrange temperature when freezing, heating, as hot water not met then enters hot-water mode, meets user and individually heats
The requirement of water.The method uses simple temperature to control to carry out judgment model, there is error in judgement.
The patent of CN201110053409.6 discloses a kind of air conditioning unit refrigeration recuperation of heat intelligent control method, uses temperature
Degree range restraint method, compares air-conditioning inflow temperature and arranges refrigeration start and shutdown temperature is interval, compare hot water temperature with
Hot water start is set and shutdown temperature is interval, it is judged that enter standby, freeze, recuperation of heat of freeze, water heating pattern, multimode operation
Time module in the autonomous judgment model of unit and do not force unified operation, to meet air-conditioning cold load and hot water load simultaneously.This side
Method is confined to single compressor, and will refrigeration or heat reach to arrange condition after enter under holding state, then judge next step
Pattern, affect system regulates operation in real time, causes the decline of heat recovery efficiency.
And under high inflow temperature, unit can produce high condensing pressure and high exhaust temperature, even there will be compressor various
Protection is shut down, such as overcurrent protection, high voltage protective etc., thus affects efficiency and the using effect of unit.Use double-compressor also
Connection driving can solve this problem, only allows a compressor operating thus realize exclusively enjoying of whole condensing heat-exchange area under high temperature,
Avoid because of insufficient the caused compressor protection problem of heat exchange.Efficiency can be improved during 2 compressor operatings.Double-compressor drives
Schema control is proposed requirements at the higher level, various working condition requirement should be met, ensure the reliable and stable operation of unit safety again.But pass
System heat recovery mode converts to be needed manual switching pattern or carries out mould again after present mode output effect meets user's request by the time
Formula is changed, and causes patten transformation not in time, it is impossible to timely respond to user's request.
Summary of the invention
Based on this, it is necessary to for the problem not in time of patten transformation in conventional art, it is provided that one can timely from
Dynamic air conditioning unit patten transformation control method, device and the air conditioning system carrying out pattern switching.
For realizing the one air conditioning unit patten transformation control method that the object of the invention provides, comprise the following steps:
Air conditioning unit under present mode of operation, run the first Preset Time after, it is judged that refrigeration compressor quantity required and heat
Water compressor quantity required；
According to described refrigeration compressor quantity required and described hot water compressor quantity required obtain air conditioning unit next
Operational mode；
Judge that next operational mode described is the most identical with air conditioning unit present mode of operation；
The most then control air conditioning unit to continue to run with present mode of operation；
If it is not, after then controlling described air conditioning unit second Preset Time that shuts down under described present mode of operation, run institute
State next operational mode；
Wherein, described present mode of operation and next operational mode described are all the operational mode of air-conditioning, described operation mould
Formula includes refrigeration mode, hot-water mode and heat recovery mode.
As the embodiment of a kind of air conditioning unit patten transformation control method, described according to described refrigeration compressor
Before quantity required and described hot water compressor quantity required obtain next operational mode air conditioning unit, also include following step
Rapid:
Judge whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；
The most then control air conditioning unit standby；
If it is not, then continue executing with the step judging described next air conditioning unit operational mode.
As the embodiment of a kind of air conditioning unit patten transformation control method, go out according to refrigeration leaving water temperature, hot water
Coolant-temperature gage, hot water temperature, setting cryogenic temperature and setting hot water temperature, it is judged that described refrigeration compressor quantity required and institute
State hot water compressor quantity required.
As the embodiment of a kind of air conditioning unit patten transformation control method, described according to freezing leaving water temperature and setting
Determine cryogenic temperature and judge described refrigeration compressor quantity required, comprise the following steps:
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value, described
Refrigeration compressor quantity required is 2；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value, and it is more than
During equal to the second preset difference value, described refrigeration compressor quantity required is 1；
When described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if one point
In clock, described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration compressor
Quantity required reduces 1, until described refrigeration compressor quantity required is 0；
When described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature sets system with described
When the difference of cold temperature is less than described second preset difference value, described refrigeration compressor quantity required and the most air conditioning unit refrigeration
Compressor quantity required is identical；
Described first preset difference value is more than described second preset difference value.
As the embodiment of a kind of air conditioning unit patten transformation control method, described according to hot water effluent's temperature, heat
Water tank temperature and setting hot water temperature judge described hot water compressor quantity required, comprise the following steps:
When the difference of the described hot water temperature of setting with described hot water temperature is more than or equal to the 3rd preset difference value and described
When hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor quantity required is 2；
When the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value, and it is more than
Equal to the 4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor demand
Quantity is 1；
When described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor quantity required is
0；
When described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature and described hot water water
When the difference of case temperature is less than described four preset difference value, described hot water compressor quantity required and the most air conditioning unit hot water
Compressor quantity required is identical；
Described 4th preset difference value is less than described 3rd preset difference value.
As the embodiment of a kind of air conditioning unit patten transformation control method, described according to described refrigeration compressor need
Ask quantity and described hot water compressor quantity required to obtain next operational mode air conditioning unit, comprise the following steps:
When described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is determined that air conditioner
Next operational mode of group is heat recovery mode；
When described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that described
Next air conditioning unit operational mode is refrigeration mode；
When described refrigeration compressor quantity required is 0, and when described hot water compressor quantity required is more than 0, it is determined that described
Next air conditioning unit operational mode is hot-water mode.
As the embodiment of a kind of air conditioning unit patten transformation control method, when described air conditioning unit in arrange preferential
When performing function, described obtain air conditioner according to described refrigeration compressor quantity required and described hot water compressor quantity required
Organize next operational mode, comprise the following steps:
When described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is judged that described excellent
First carry out whether compressor quantity required corresponding to function is more than the compressor quantity required of another function；
The most then judge that described next air conditioning unit operational mode is as operation mould corresponding to described preferential execution function
Formula；
If it is not, then judge that described next air conditioning unit operational mode is as heat recovery mode；
When described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that described
Next air conditioning unit operational mode is refrigeration mode；
When described refrigeration compressor quantity required is 0, and when described hot water compressor quantity required is more than 0, it is determined that described
Next air conditioning unit operational mode is hot-water mode；
Described preferential execution function is refrigerating function or hot water function.
As the embodiment of a kind of air conditioning unit patten transformation control method,
When described air conditioning unit in have two compressors can not use because of fault time, described refrigeration compressor quantity required and
Described hot water compressor quantity required is all 0；
When described air conditioning unit in have a compressor can not use because of fault time, quantity is the compressor quantity required of 2
Reduce 1.
The air conditioning unit mode changeover control device of one based on same inventive concept, judges mould including number of compressors
Block, the first judge module, the second judge module, the first execution module and second perform module, wherein:
Described number of compressors judge module, for air conditioning unit at present mode of operation under run the first Preset Time
After, it is judged that refrigeration compressor quantity required and hot water compressor quantity required；
Described first judge module, for according to described refrigeration compressor quantity required and described hot water compressor demand
Quantity obtains next operational mode air conditioning unit；
Described second judge module, for judging whether are next operational mode described and air conditioning unit present mode of operation
Identical；
Described first performs module, for the judged result according to described second judge module, when next operation mould described
When formula is identical with air conditioning unit present mode of operation, then control air conditioning unit to continue to run with present mode of operation；
Described second performs module, for the judged result according to described second judge module, when next operation mould described
When formula is different from air conditioning unit present mode of operation, then control described air conditioning unit shutdown the under described present mode of operation
After two Preset Times, run next operational mode described；
Wherein, described present mode of operation and next operational mode described are all the operational mode of air-conditioning, described operation mould
Formula includes refrigeration mode, hot-water mode and heat recovery mode.
As the embodiment of a kind of air conditioning unit mode changeover control device, also include standby judge module, be used for
Judge whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；The most then control air-conditioning
Unit is standby；If it is not, then turn described first judge module of execution.
As the embodiment of a kind of air conditioning unit mode changeover control device, described number of compressors judge module bag
Include refrigeration compressor quantity and judge that submodule and hot water compressor judge submodule, wherein:
Described refrigeration compressor quantity judges submodule, for judging institute according to refrigeration leaving water temperature and setting cryogenic temperature
State refrigeration compressor quantity required；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value, it is determined that
Described refrigeration compressor quantity required is 2；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value, and it is more than
During equal to the second preset difference value, it is determined that described refrigeration compressor quantity required is 1；
When described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if one point
In clock, described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration compressor
Quantity required reduces 1, until described refrigeration compressor quantity required is 0；
When described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature sets system with described
When the difference of cold temperature is less than described second preset difference value, it is determined that described refrigeration compressor quantity required is with the most air conditioning unit
Refrigeration compressor quantity required is identical；And described first preset difference value is more than described second preset difference value；
Described hot water compressor judges submodule, for according to hot water effluent's temperature, hot water temperature and setting hot water
Temperature judges described hot water compressor quantity required；
When the difference of the described hot water temperature of setting with described hot water temperature is more than or equal to the 3rd preset difference value and described
When hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor quantity required is 2；
When the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value, and it is more than
Equal to the 4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor demand
Quantity is 1；
When described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor quantity required is
0；
When described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature and described hot water water
When the difference of case temperature is less than described four preset difference value, described hot water compressor quantity required and the most air conditioning unit hot water
Compressor quantity required is identical；
Described 4th preset difference value is less than described 3rd preset difference value.
As the embodiment of a kind of air conditioning unit mode changeover control device, described first judge module, including
One heat recovery mode decision sub-module, the first refrigeration mode decision sub-module and first hot-water mode's decision sub-module, wherein:
Described first heat recovery mode decision sub-module, for when described refrigeration compressor quantity required and described hot water pressure
When contracting machine quantity required is both greater than 0, it is determined that next air conditioning unit operational mode is heat recovery mode；
Described first refrigeration mode decision sub-module, for being more than 0, and described heat when described refrigeration compressor quantity required
When water compressor quantity required is 0, it is determined that described next air conditioning unit operational mode is refrigeration mode；
Described first hot-water module decision sub-module, is used for when described refrigeration compressor quantity required is 0, and described hot water
When compressor quantity required is more than 0, it is determined that described next air conditioning unit operational mode is hot-water mode.
As the embodiment of a kind of air conditioning unit mode changeover control device, also include that priority function arranges module,
For described air conditioning unit in arrange and preferentially perform function；
Described first judge module also includes the second heat recovery mode decision sub-module, the second refrigeration mode decision sub-module
And the second hot-water mode's decision sub-module；When described priority function arranges and is provided with preferential execution function in module,
Described second heat recovery mode decision sub-module, for when described refrigeration compressor quantity required and described hot water pressure
When contracting machine quantity required is both greater than 0, it is judged that whether compressor quantity required corresponding to described preferential execution function be more than another merit
The compressor quantity required of energy；
The most then judge that described next air conditioning unit operational mode is as operation mould corresponding to described preferential execution function
Formula；
If it is not, then judge that described next air conditioning unit operational mode is as heat recovery mode；
Described second refrigeration mode decision sub-module, for being more than 0, and described heat when described refrigeration compressor quantity required
When water compressor quantity required is 0, it is determined that described next air conditioning unit operational mode is refrigeration mode；
Described second hot-water mode's submodule, is used for when described refrigeration compressor quantity required is 0, and the compression of described hot water
When machine quantity required is more than 0, it is determined that described next air conditioning unit operational mode is hot-water mode；
Described preferential execution function is refrigerating function or hot water function.
As the embodiment of a kind of air conditioning unit mode changeover control device, also include that number of compressors adjusts mould
Block, for being adjusted refrigeration compressor quantity required and hot water compressor quantity required；
Described number of compressors adjusting module includes that the first adjustment submodule and second adjusts submodule, wherein:
Described first adjust submodule, for when described air conditioning unit in have two compressors can not use because of fault time,
Adjust described refrigeration compressor quantity required and described hot water compressor quantity required is all 0；
Described second adjust submodule, for when described air conditioning unit in have a compressor can not use because of fault time,
Adjust the compressor quantity required that quantity is 2 and reduce 1.
A kind of double-compressor Air Conditioning System with Heat based on identical inventive concept, including aforesaid air conditioning unit pattern
Conversion control device.
The beneficial effect comprise that
Air conditioning unit patten transformation control method, device and the air-conditioning system of a kind of embodiment of the present invention that the present invention provides
System, by the judgement carrying out refrigeration compressor quantity required and hot water compressor quantity required, determines air conditioning unit next
Operational mode.And automatically air conditioning unit operational mode is changed automatically.Start corresponding operational mode according to demand.From
And more can meet the actually used demand of user, reach the temperature that user sets faster.And same in air conditioning unit operation
Time the compressor quantity required of system is judged, improve heat recovery efficiency.
Accompanying drawing explanation
Fig. 1 is the flow chart of a specific embodiment of a kind of air conditioning unit patten transformation control method of the present invention；
Fig. 2 is the flow chart of another specific embodiment of a kind of air conditioning unit patten transformation control method of the present invention；
Fig. 3 is the structural representation of a specific embodiment of a kind of air conditioning unit mode changeover control device of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing to the present invention's
The detailed description of the invention of air conditioning unit patten transformation control method, device and air conditioning system illustrates.Should be appreciated that this place
The specific embodiment described, only in order to explain the present invention, is not intended to limit the present invention.
The air conditioning unit patten transformation control method of one embodiment of the invention, as it is shown in figure 1, comprise the following steps.
S100, air conditioning unit under present mode of operation, run the first Preset Time after, it is judged that refrigeration compressor demand number
Amount and hot water compressor quantity required.
Herein it should be noted that can make according to refrigeration leaving water temperature, hot water effluent's temperature, hot water temperature, setting
Cold temperature and setting hot water temperature, it is judged that described refrigeration compressor quantity required and described hot water compressor quantity required.If
Number_A is refrigeration compressor quantity required, and number_B is hot water compressor quantity required, and number_C is because caning not oneself
Dynamic fault of recovering causes unusable number of compressors.For double compressor system unit, then number_A and
The value of number_B and number_C can be 0,1,2, and wherein 0 indicates without related needs, and 1 indicates related needs, and 2 represent phase
Pass demand is strong.
S200, obtains air conditioning unit according to described refrigeration compressor quantity required and described hot water compressor quantity required
Next operational mode.Wherein, described operational mode includes refrigeration mode, hot-water mode and heat recovery mode.In the present invention mainly
Illustrate for the conversion between these three pattern.
S300, it is judged that next operational mode described is the most identical with air conditioning unit present mode of operation.
S400, the most then control air conditioning unit to continue to run with present mode of operation.
S500, if it is not, after then controlling described air conditioning unit second Preset Time that shuts down under described present mode of operation, fortune
Row next operational mode described.
First Preset Time may be configured as 6 minutes herein, and the second Preset Time may be configured as 4 minutes.After shutting down 4 minutes,
Start air-conditioning according to the operational mode above judged to continue to run with.
The air conditioning unit patten transformation control method of the embodiment of the present invention, by refrigeration compressor quantity required and hot water
The judgement that compressor quantity required is carried out, determines next air conditioning unit operational mode.And automatically to air conditioning unit operation mould
Formula is changed automatically.Start corresponding operational mode according to demand.Thus more can meet the actually used demand of user, more
Fast reaches the temperature that user sets.And while air conditioning unit operation, the compressor quantity required of system is judged,
Improve heat recovery efficiency.
Wherein in the embodiment of an air conditioning unit patten transformation control method, before step S2200, also include with
Lower step:
S020, it is judged that whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；If
It is then to control air conditioning unit standby；If it is not, then continue executing with the step judging described next air conditioning unit operational mode.When
So, when refrigeration compressor quantity required and hot water compressor quantity required are all zero, then air conditioning unit having met is described
All demands of user, therefore, now control compressor and enter holding state, in order to saves energy.
Concrete, in step S100, judge described refrigeration compressor need according to refrigeration leaving water temperature and setting cryogenic temperature
Seek quantity, comprise the following steps:
S110, when the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value
Time, described refrigeration compressor quantity required is 2.If TwoutFor refrigeration leaving water temperature, namely chilled water leaving water temperature, T_C_SET
The setting cryogenic temperature set for user, Δ T is temperature deviation.Then step S110, is formulated as: Twout≥T_C_SET+
During 3 × Δ T+2, number_A is equal to 2.Now the first preset difference value is 2.And add the scope of the temperature difference, for the model of the temperature difference
Enclosing and take three times, the excursion also for temperature is more flexible, meets the requirement of Error Calculation.
S120, when the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value,
And during more than or equal to the second preset difference value, described refrigeration compressor quantity required is 1.Employing formulae express is: T_C_SET+3 ×
ΔT+2≥TwoutDuring >=T_C_SET+3 × Δ T+1, number_A is equal to 1.Now taking the second preset temperature is 1 DEG C.Need
Bright, in formula, the unit of Temperature numerical is all degree Celsius.
S130, when described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if
In one minute, described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration pressure
Contracting machine quantity required reduces 1, until described refrigeration compressor quantity required is 0.
This step combines formula and is described as follows:
Work as TwoutDuring≤T_C_SET,
If number_A original value is 2, then number_A is equal to 1, and then continuous detecting is still set up for 1 minute, then number_
A is equal to 0；
If number_A original value is 1, then continuous detecting is set up for 1 minute, then number_A is equal to 0；
If number_A original value is 0, then keep constant.
S140, when described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature is with described
When the difference of setting cryogenic temperature is less than described second preset difference value, described refrigeration compressor quantity required is with the most air conditioning unit
Refrigeration compressor quantity required identical；Described first preset difference value is more than described second preset difference value.
Step S110 by judging the difference of refrigeration water outlet and setting, adjusts refrigeration compressor demand number to step S140
Amount so that refrigeration compressor quantity required with air conditioning unit practical operation situation real-time change.There is refrigeration compressor
The real-time change of quantity required, just can follow-up change the timely of air conditioning unit running status in real time.
Similar, in step S100, judge institute according to hot water effluent's temperature, hot water temperature and setting hot water temperature
State hot water compressor quantity required, comprise the following steps:
S101, when the described hot water temperature's difference with described hot water temperature that sets is more than or equal to the 3rd preset difference value,
And described hot water effluent's temperature less than described setting hot water temperature time, described hot water compressor quantity required is 2.
If TboxFor hot water temperature, ThoutFor hot water effluent's temperature, T_W_SET is that user sets hot water temperature,
Number_B is hot water compressor quantity required.Step S101 formulae express is: work as Tbox≤ T_W_SET-5 and Thout ＜ T_
During W_SET, then number_B is equal to 2.Now taking the 3rd preset difference value is 5.
S102, when the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value,
And more than or equal to the 4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compresses
Machine quantity required is 1.
By formulae express it is: Thout＜ T_W_SET and T_W_SET-5≤Tbox≤ T_W_SET-2, number_B are equal to
1.Now taking the 4th preset difference value is 1.
Herein it should be noted that " T can be arranged in other embodimentsbox≤ T_W_SET-5 " or " Thout＜ T_W_SET
And Tbox≤ T_W_SET-2 " set up, then make number_B be equal to 1.
S103, when described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor demand
Quantity is 0.That is, T is worked asbox>=T_W_SET, then number_B is equal to 0.
S104, when described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature is with described
When the difference of hot water temperature is less than described four preset difference value, described hot water compressor quantity required is with the most air conditioning unit
Hot water compressor quantity required identical；Described 4th preset difference value is less than described 3rd preset difference value.
Same, step S101 to step S104 obtains hot water compressor need in real time according to air conditioning unit actual motion state
Seek quantity, in order to follow-up quickly, timely to air conditioning unit operational mode be replaced.
Concrete, the judgement to three kinds of air conditioning unit operational modes is as follows:
1) when described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is determined that air-conditioning
Next operational mode of unit is heat recovery mode.
2) when described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that institute
Stating next air conditioning unit operational mode is refrigeration mode.
3) be 0 when described refrigeration compressor quantity required, and described hot water compressor quantity required more than 0 time, it is determined that institute
Stating next air conditioning unit operational mode is hot-water mode.
Concrete, it is as follows that patten transformation controls process:
[1] when currently practical execution pattern is heat recovery mode,
If 1. number_B=0 and number_A ＞ 0, or number_B ＞ 0 and number_A=0, when satisfied heat is returned
After receipts pattern minimum runs time 6min, first shut down according to heat recovery mode shutdown process, after minimum 4min downtime arrives, then
Automatically turn on associative mode according to current demand to perform；
If 2. number_B ＞ 0 and number_A ＞ 0, then continue to keep heat recovery mode；
If 3. number_B=0 and number_A=0, then heat recovery mode automatic stand-by.
[2] when currently practical execution pattern is hot-water mode,
If 1. number_B=0 and number_A ＞ 0, or number_B ＞ 0 and number_A is ＞ 0, when meeting hot water
After pattern minimum runs time 6min, first shut down according to hot-water mode's shutdown process, after minimum downtime to 4min, according still further to
Current demand automatically turns on associative mode and performs；
If 2. number_B=0 and number_A=0, then hot-water mode's automatic stand-by；
If 3. number_B ＞ 0 and number_A=0, then continue to keep hot-water mode；
[3] when currently practical execution pattern is refrigeration mode,
If 1. number_B ＞ 0 and number_A=0, or number_B ＞ 0 and number_A is ＞ 0, when satisfied refrigeration
After pattern minimum runs time 6min, first shut down according to refrigeration mode shutdown process, after minimum 4min downtime arrives, according still further to
Current demand automatically turns on associative mode and performs；
If 2. number_B=0 and number_A=0, then refrigeration mode automatic stand-by；
If 3. number_B=0 and number_A ＞ 0, then continue to keep refrigeration mode.
It is preferred that in other embodiments of the invention, it is also possible to preferentially perform function to arranging in air conditioning unit.Described
The preferential function that performs is refrigerating function or hot water function.When being provided with preferential execution function, concrete air conditioning unit fortune
Row mode judges as follows:
A) when described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is judged that described
Preferentially perform whether compressor quantity required corresponding to function is more than the compressor quantity required of another function；
The most then judge that described next air conditioning unit operational mode is as operation mould corresponding to described preferential execution function
Formula；
If it is not, then judge that described next air conditioning unit operational mode is as heat recovery mode.
B) when described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that institute
Stating next air conditioning unit operational mode is refrigeration mode.
C) be 0 when described refrigeration compressor quantity required, and described hot water compressor quantity required more than 0 time, it is determined that institute
Stating next air conditioning unit operational mode is hot-water mode.
Herein it should be noted that operational mode judge in, 2) with b) identical, 3) with c) identical, and a) He 1) difference is relatively
Greatly.
Below in conjunction with Fig. 2, air conditioning unit patten transformation is illustrated.
If the air conditioning unit initial operational mode that sets is as heat recovery mode, after running the first Preset Time, it may be judged whether
Priority function is had to arrange, the most then by there being priority function (similar and step a)～c)) judge compressor quantity required；If it is not,
Then according to normal condition (step 1)～3)) judge compressor quantity required.
Refrigeration has demand and hot water, and (refrigeration compressor quantity required is not zero, and hot water compressor quantity required without asking
It is zero) time, shut down after the second Preset Time by present mode of operation, start refrigeration mode, and enter subsequent cycle.
Freeze without asking and hot water has demand (refrigeration compressor quantity required is zero, and hot water compressor quantity required is not
It is zero) time, shut down after the second Preset Time by present mode of operation, start hot-water mode, and enter subsequent cycle.
When refrigeration and hot water have demand (refrigeration compressor quantity required and hot water compressor quantity required are all not zero)
Time, then the heat recovery mode keeping current only needs to run.
When refrigeration and hot water all do not have demand (refrigeration compressor quantity required and hot water compressor quantity required are all zero)
Time, the most air conditioning unit entrance holding state.
The air conditioning unit patten transformation control method of the present invention, refrigeration and hot water have demand simultaneously, and are all not up to user
During setting demand, perform heat recovery mode, take into account refrigeration and hot water effect simultaneously.Refrigeration has reached user and has set demand, but hot
During water still unmet demand, it is automatically switched to hot-water mode and performs, continue to increase hot water effect.Hot water has reached user and has set need
Ask, but freeze still unmet demand time, be automatically switched to refrigeration mode perform, continue increase refrigeration.And user can make by oneself
Justice mode of priority, if it is preferential to set refrigeration, then automatic decision hot water demand while not reducing refrigeration, and be transformed into right
Answer pattern；If it is preferential to set hot water, then automatic decision refrigeration demand while not reducing hot water effect, and it is transformed into corresponding mould
Formula.
It should be noted that two compressors in air conditioning unit may cause unusable because of unrecoverable failure.
When described air conditioning unit in have two compressors can not use because of fault time, described refrigeration compressor quantity required and
Described hot water compressor quantity required is all 0.
When described air conditioning unit in have a compressor can not use because of fault time, quantity is the compressor quantity required of 2
Reduce 1.
Concrete, if number_C=0, then the value of number_B and number_A keeps former result of calculation；
If number_C=1, as number_B=2, number_B=1；
As number_B ＜ 2, keep former result of calculation；
As number_A=2, number_A=1；
As number_A ＜ 2, keep former result of calculation；
If number_C=2, then number_B=0, number_A=0.
Detailed refrigeration compressor quantity required, hot water compressor quantity required, malfunctioning compressor quantity are with air conditioning unit
Corresponding relation between operational mode is as shown in table 1.
Table 1 air conditioning unit operational mode synopsis
Based on same inventive concept, the present invention also provides for a kind of air conditioning unit mode changeover control device, due to this device
The principle of solution problem patten transformation air conditioning unit to aforementioned one control method is similar, and therefore, the enforcement of this system can be by
Concrete steps according to preceding method realize, and repeat no more in place of repetition.
The air conditioning unit mode changeover control device of one of one of them embodiment, as it is shown on figure 3, include number of compressors
Judge module the 100, first judge module the 200, second judge module 300, first performs module 400 and second and performs module 500.
Wherein: number of compressors judge module 100, for air conditioning unit at present mode of operation under run the first Preset Time after,
Judge refrigeration compressor quantity required and hot water compressor quantity required；First judge module 200, for according to described refrigeration pressure
Contracting machine quantity required and described hot water compressor quantity required obtain next operational mode air conditioning unit；Second judge module
300, the most identical with air conditioning unit present mode of operation for judging next operational mode described；First performs module 400,
For the judged result according to described second judge module, when next operational mode described and air conditioning unit present mode of operation
Time identical, then control air conditioning unit to continue to run with present mode of operation；Second performs module 500, for sentencing according to described second
The judged result of disconnected module, when next operational mode described is different from air conditioning unit present mode of operation, then controls described
After air conditioning unit second Preset Time that shuts down under described present mode of operation, run next operational mode described；Wherein, described
Present mode of operation and next operational mode described are all the operational mode of air-conditioning, and described operational mode includes refrigeration mode, heat
Aqueous mode and heat recovery mode.
The air conditioning unit mode changeover control device of the embodiment of the present invention, by refrigeration compressor quantity required and hot water
The judgement that compressor quantity required is carried out, determines next air conditioning unit operational mode.And automatically to air conditioning unit operation mould
Formula is changed automatically.Start corresponding operational mode according to demand.Thus more can meet the actually used demand of user, more
Fast reaches the temperature that user sets.And while air conditioning unit operation, the compressor quantity required of system is judged,
Improve heat recovery efficiency.
Wherein in the embodiment of an air conditioning unit mode changeover control device, also include standby judge module 600, use
In judging whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；The most then control sky
Tune unit is standby；If it is not, then turn described first judge module 200 of execution.
Wherein in the embodiment of an air conditioning unit mode changeover control device, number of compressors judge module 100 wraps
Include refrigeration compressor quantity and judge that submodule 110 and hot water compressor judge submodule 120.
Wherein, refrigeration compressor quantity judges submodule 110, for sentencing according to refrigeration leaving water temperature and setting cryogenic temperature
Disconnected described refrigeration compressor quantity required.Specific as follows:
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value, it is determined that
Described refrigeration compressor quantity required is 2；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value, and it is more than
During equal to the second preset difference value, it is determined that described refrigeration compressor quantity required is 1；
When described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if one point
In clock, described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration compressor
Quantity required reduces 1, until described refrigeration compressor quantity required is 0；
When described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature sets system with described
When the difference of cold temperature is less than described second preset difference value, it is determined that described refrigeration compressor quantity required is with the most air conditioning unit
Refrigeration compressor quantity required is identical；And described first preset difference value is more than described second preset difference value；
Hot water compressor judges submodule 120, for according to hot water effluent's temperature, hot water temperature and setting hot water temperature
Degree judges described hot water compressor quantity required.Specific as follows:
When the difference of the described hot water temperature of setting with described hot water temperature is more than or equal to the 3rd preset difference value and described
When hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor quantity required is 2；
When the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value, and it is more than
Equal to the 4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor demand
Quantity is 1；
When described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor quantity required is
0；
When described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature and described hot water water
When the difference of case temperature is less than described four preset difference value, described hot water compressor quantity required and the most air conditioning unit hot water
Compressor quantity required is identical；
Described 4th preset difference value is less than described 3rd preset difference value.
Wherein in the embodiment of an air conditioning unit mode changeover control device, the first judge module 200, including first
Heat recovery mode decision sub-module the 210, first refrigeration mode decision sub-module 220 and first hot-water mode's decision sub-module 230.
Wherein: the first heat recovery mode decision sub-module 210, for when described refrigeration compressor quantity required and described hot water compressor
When quantity required is both greater than 0, it is determined that next air conditioning unit operational mode is heat recovery mode；First refrigeration mode judges submodule
Block 220, for being more than 0 when described refrigeration compressor quantity required, and when described hot water compressor quantity required is 0, it is determined that institute
Stating next air conditioning unit operational mode is refrigeration mode；First hot-water module decision sub-module 230, for when described refrigeration pressure
Contracting machine quantity required is 0, and when described hot water compressor quantity required is more than 0, it is determined that described next air conditioning unit operation mould
Formula is hot-water mode.
Wherein in the embodiment of an air conditioning unit mode changeover control device, also include that priority function arranges module
700, for described air conditioning unit in arrange and preferentially perform function.Wherein, described preferential execution function be refrigerating function or
Hot water function.
Accordingly, the first judge module 200 also includes second heat recovery mode decision sub-module the 201, second refrigeration mould
Formula decision sub-module 202 and second hot-water mode's decision sub-module 203.
When described priority function arranges and is provided with preferential execution function in module, the second heat recovery mode decision sub-module
201, for when described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is judged that described excellent
First carry out whether compressor quantity required corresponding to function is more than the compressor quantity required of another function.The most then judge institute
Stating next air conditioning unit operational mode is operational mode corresponding to described preferential execution function；If it is not, then judge described air-conditioning
Next operational mode of unit is heat recovery mode.
Second refrigeration mode decision sub-module 202, for being more than 0, and described heat when described refrigeration compressor quantity required
When water compressor quantity required is 0, it is determined that described next air conditioning unit operational mode is refrigeration mode.
Second hot-water mode's submodule 203, is used for when described refrigeration compressor quantity required is 0, and the compression of described hot water
When machine quantity required is more than 0, it is determined that described next air conditioning unit operational mode is hot-water mode.
Wherein in the embodiment of an air conditioning unit mode changeover control device, also include number of compressors adjusting module
800, for refrigeration compressor quantity required and hot water compressor quantity required are adjusted.
And number of compressors adjusting module 800 includes that the first adjustment submodule 810 and second adjusts submodule 820.Wherein:
First adjust submodule 810, for when described air conditioning unit in have two compressors can not use because of fault time, adjust described system
Cold compressor quantity required and described hot water compressor quantity required are all 0.Second adjusts submodule 820, for when described sky
Adjust in unit have a compressor because of fault can not use time, adjust the compressor quantity required that quantity is 2 and reduce 1.
Meanwhile, the present invention also provides for a kind of double-compressor Air Conditioning System with Heat, and it includes aforesaid air conditioning unit pattern
Conversion control device.Enable air conditioning system according to air conditioning unit actual motion state conversion operation pattern real-time, quick,
Reach the demand that user sets faster, meanwhile, improve the efficiency of recuperation of heat.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (15)
1. an air conditioning unit patten transformation control method, it is characterised in that comprise the following steps:
Air conditioning unit under present mode of operation, run the first Preset Time after, it is judged that refrigeration compressor quantity required and hot water pressure
Contracting machine quantity required；
Next operation air conditioning unit is obtained according to described refrigeration compressor quantity required and described hot water compressor quantity required
Pattern；
Judge that next operational mode described is the most identical with air conditioning unit present mode of operation；
The most then control air conditioning unit to continue to run with present mode of operation；
If it is not, after then controlling described air conditioning unit second Preset Time that shuts down under described present mode of operation, run described under
One operational mode；
Wherein, described present mode of operation and next operational mode described are all the operational mode of air-conditioning, described operational mode bag
Include refrigeration mode, hot-water mode and heat recovery mode.
Air conditioning unit patten transformation control method the most according to claim 1, it is characterised in that described according to described system
Before cold compressor quantity required and described hot water compressor quantity required obtain next operational mode air conditioning unit, also include
Following steps:
Judge whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；
The most then control air conditioning unit standby；
If it is not, then continue executing with the step judging described next air conditioning unit operational mode.
Air conditioning unit patten transformation control method the most according to claim 1, it is characterised in that water temperature according to freezing
Degree, hot water effluent's temperature, hot water temperature, setting cryogenic temperature and setting hot water temperature, it is judged that described refrigeration compressor needs
Ask quantity and described hot water compressor quantity required.
Air conditioning unit patten transformation control method the most according to claim 3, it is characterised in that described according to refrigeration water outlet
Temperature and setting cryogenic temperature judge described refrigeration compressor quantity required, comprise the following steps:
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value, described refrigeration
Compressor quantity required is 2；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value, and it is more than or equal to
During the second preset difference value, described refrigeration compressor quantity required is 1；
When described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if in one minute
Described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration compressor demand
Quantity reduces 1, until described refrigeration compressor quantity required is 0；
When described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature sets refrigeration temperature with described
When the difference of degree is less than described second preset difference value, described refrigeration compressor quantity required and the most air conditioning unit refrigerant compression
Machine quantity required is identical；
Described first preset difference value is more than described second preset difference value.
Air conditioning unit patten transformation control method the most according to claim 3, it is characterised in that described according to hot water effluent
Temperature, hot water temperature and setting hot water temperature judge described hot water compressor quantity required, comprise the following steps:
When the described hot water temperature's difference with described hot water temperature that sets is more than or equal to the 3rd preset difference value, and described hot water
When leaving water temperature is less than described setting hot water temperature, described hot water compressor quantity required is 2；
When the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value, and it is more than or equal to
4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor quantity required
It is 1；
When described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor quantity required is 0；
When described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature and described hot water temperature
When the difference of degree is less than described four preset difference value, described hot water compressor quantity required compresses with the most air conditioning unit hot water
Machine quantity required is identical；
Described 4th preset difference value is less than described 3rd preset difference value.
Air conditioning unit patten transformation control method the most according to claim 1, it is characterised in that described according to described refrigeration
Compressor quantity required and described hot water compressor quantity required obtain next operational mode air conditioning unit, including following step
Rapid:
When described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is determined that air conditioning unit
Next operational mode is heat recovery mode；
When described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that described air-conditioning
Next operational mode of unit is refrigeration mode；
When described refrigeration compressor quantity required is 0, and when described hot water compressor quantity required is more than 0, it is determined that described air-conditioning
Next operational mode of unit is hot-water mode.
Air conditioning unit patten transformation control method the most according to claim 1, it is characterised in that when described air conditioning unit in
Arrange preferential when performing function, described obtain according to described refrigeration compressor quantity required and described hot water compressor quantity required
To next operational mode air conditioning unit, comprise the following steps:
When described refrigeration compressor quantity required and described hot water compressor quantity required are both greater than 0, it is judged that described preferentially hold
Whether compressor quantity required corresponding to row function be more than the compressor quantity required of another function；
The most then judge that described next air conditioning unit operational mode is as operational mode corresponding to described preferential execution function；
If it is not, then judge that described next air conditioning unit operational mode is as heat recovery mode；
When described refrigeration compressor quantity required is more than 0, and when described hot water compressor quantity required is 0, it is determined that described air-conditioning
Next operational mode of unit is refrigeration mode；
When described refrigeration compressor quantity required is 0, and when described hot water compressor quantity required is more than 0, it is determined that described air-conditioning
Next operational mode of unit is hot-water mode；
Described preferential execution function is refrigerating function or hot water function.
8. according to the air conditioning unit patten transformation control method described in claim 4 or 5, it is characterised in that:
When described air conditioning unit in have two compressors can not use because of fault time, described refrigeration compressor quantity required and described
Hot water compressor quantity required is all 0；
When described air conditioning unit in have a compressor can not use because of fault time, quantity be 2 compressor quantity required reduce
1。
9. an air conditioning unit mode changeover control device, it is characterised in that include number of compressors judge module, the first judgement
Module, the second judge module, the first execution module and second perform module, wherein:
Described number of compressors judge module, for air conditioning unit at present mode of operation under run the first Preset Time after,
Judge refrigeration compressor quantity required and hot water compressor quantity required；
Described first judge module, for according to described refrigeration compressor quantity required and described hot water compressor quantity required
Obtain next operational mode air conditioning unit；
Described second judge module, for judging next operational mode described and air conditioning unit present mode of operation whether phase
With；
Described first performs module, for according to the judged result of described second judge module, when next operational mode described with
When air conditioning unit present mode of operation is identical, then control air conditioning unit to continue to run with present mode of operation；
Described second performs module, for according to the judged result of described second judge module, when next operational mode described with
During air conditioning unit present mode of operation difference, then control described air conditioning unit shut down under described present mode of operation second pre-
If after the time, run next operational mode described；
Wherein, described present mode of operation and next operational mode described are all the operational mode of air-conditioning, described operational mode bag
Include refrigeration mode, hot-water mode and heat recovery mode.
Air conditioning unit mode changeover control device the most according to claim 9, it is characterised in that also include standby judgement
Module, is used for judging whether described refrigeration compressor quantity required and described hot water compressor quantity required are zero；The most then
Control air conditioning unit standby；If it is not, then turn described first judge module of execution.
11. air conditioning unit mode changeover control devices according to claim 9, it is characterised in that described number of compressors
Judge module includes that refrigeration compressor quantity judges that submodule and hot water compressor judge submodule, wherein:
Described refrigeration compressor quantity judges submodule, for judging described system according to refrigeration leaving water temperature and setting cryogenic temperature
Cold compressor quantity required；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is more than or equal to the first preset difference value, it is determined that described
Refrigeration compressor quantity required is 2；
When the difference of described refrigeration leaving water temperature with described setting cryogenic temperature is less than described first preset difference value, and it is more than or equal to
During the second preset difference value, it is determined that described refrigeration compressor quantity required is 1；
When described refrigeration leaving water temperature is less than or equal to described setting cryogenic temperature, then continuous detecting one minute, if in one minute
Described refrigeration leaving water temperature is always less than or equal to described setting cryogenic temperature, then by the most air conditioning unit refrigeration compressor demand
Quantity reduces 1, until described refrigeration compressor quantity required is 0；
When described refrigeration leaving water temperature is more than described setting cryogenic temperature, and described refrigeration leaving water temperature sets refrigeration temperature with described
When the difference of degree is less than described second preset difference value, it is determined that described refrigeration compressor quantity required and the most air conditioning unit refrigeration
Compressor quantity required is identical；And described first preset difference value is more than described second preset difference value；
Described hot water compressor judges submodule, for according to hot water effluent's temperature, hot water temperature and setting hot water temperature
Judge described hot water compressor quantity required；
When the described hot water temperature's difference with described hot water temperature that sets is more than or equal to the 3rd preset difference value, and described hot water
When leaving water temperature is less than described setting hot water temperature, described hot water compressor quantity required is 2；
When the described hot water temperature's difference with described hot water temperature that sets is less than described 3rd preset difference value, and it is more than or equal to
4th preset difference value, and when described hot water effluent's temperature is less than described setting hot water temperature, described hot water compressor quantity required
It is 1；
When described hot water temperature is more than or equal to described setting hot water temperature, described hot water compressor quantity required is 0；
When described hot water temperature is less than described setting hot water temperature, and described setting hot water temperature and described hot water temperature
When the difference of degree is less than described four preset difference value, described hot water compressor quantity required compresses with the most air conditioning unit hot water
Machine quantity required is identical；
Described 4th preset difference value is less than described 3rd preset difference value.
12. air conditioning unit mode changeover control devices according to claim 9, it is characterised in that described first judges mould
Block, judges submodule including the first heat recovery mode decision sub-module, the first refrigeration mode decision sub-module and the first hot-water mode
Block, wherein:
Described first heat recovery mode decision sub-module, for when described refrigeration compressor quantity required and described hot water compressor
When quantity required is both greater than 0, it is determined that next air conditioning unit operational mode is heat recovery mode；
Described first refrigeration mode decision sub-module, for being more than 0, and described hot water pressure when described refrigeration compressor quantity required
When contracting machine quantity required is 0, it is determined that described next air conditioning unit operational mode is refrigeration mode；
Described first hot-water module decision sub-module, is used for when described refrigeration compressor quantity required is 0, and the compression of described hot water
When machine quantity required is more than 0, it is determined that described next air conditioning unit operational mode is hot-water mode.
13. air conditioning unit mode changeover control devices according to claim 9, it is characterised in that also include priority function
Module is set, for described air conditioning unit in arrange and preferentially perform function；
Described first judge module also includes the second heat recovery mode decision sub-module, the second refrigeration mode decision sub-module and
Two hot-water mode's decision sub-module；When described priority function arranges and is provided with preferential execution function in module,
Described second heat recovery mode decision sub-module, for when described refrigeration compressor quantity required and described hot water compressor
When quantity required is both greater than 0, it is judged that whether compressor quantity required corresponding to described preferential execution function be more than another function
Compressor quantity required；
The most then judge that described next air conditioning unit operational mode is as operational mode corresponding to described preferential execution function；
If it is not, then judge that described next air conditioning unit operational mode is as heat recovery mode；
Described second refrigeration mode decision sub-module, for being more than 0, and described hot water pressure when described refrigeration compressor quantity required
When contracting machine quantity required is 0, it is determined that described next air conditioning unit operational mode is refrigeration mode；
Described second hot-water mode's submodule, is used for when described refrigeration compressor quantity required is 0, and described hot water compressor needs
When asking quantity to be more than 0, it is determined that described next air conditioning unit operational mode is hot-water mode；
Described preferential execution function is refrigerating function or hot water function.
14. air conditioning unit mode changeover control devices according to claim 11, it is characterised in that also include compressor number
Amount adjusting module, for being adjusted refrigeration compressor quantity required and hot water compressor quantity required；
Described number of compressors adjusting module includes that the first adjustment submodule and second adjusts submodule, wherein:
Described first adjust submodule, for when described air conditioning unit in have two compressors can not use because of fault time, adjust
Described refrigeration compressor quantity required and described hot water compressor quantity required are all 0；
Described second adjust submodule, for when described air conditioning unit in have a compressor can not use because of fault time, adjust
Quantity is the compressor quantity required reduction 1 of 2.
15. 1 kinds of double-compressor Air Conditioning System with Heats, it is characterised in that include the sky described in any one of claim 9 to 14
Adjust unit mode changeover control device.
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| CN102116515A (en) * | 2009-12-31 | 2011-07-06 | 珠海格力电器股份有限公司 | Intelligent control method for cooling and heating recovery mode of air conditioning unit |
| CN202221183U (en) * | 2011-09-01 | 2012-05-16 | 周玉涛 | Heat recovery type air-cooled water chiller-heater unit |
| CN102818408B (en) * | 2012-09-07 | 2015-04-01 | 青岛奥利凯中央空调有限公司 | Heat recovery control method of air cooling module |
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| CN108332380A (en) * | 2018-01-29 | 2018-07-27 | 青岛海尔空调电子有限公司 | Air-cooled magnetic suspension air-conditioner set and its control method |
| CN108332380B (en) * | 2018-01-29 | 2020-11-27 | 青岛海尔空调电子有限公司 | Air-cooled magnetic suspension air conditioning unit and control method thereof |
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