CN109237712A - Multimode unit temperature control method of water - Google Patents
Multimode unit temperature control method of water Download PDFInfo
- Publication number
- CN109237712A CN109237712A CN201811113275.0A CN201811113275A CN109237712A CN 109237712 A CN109237712 A CN 109237712A CN 201811113275 A CN201811113275 A CN 201811113275A CN 109237712 A CN109237712 A CN 109237712A
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- module
- electric expansion
- aperture
- modules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The present invention relates to a kind of multimode unit temperature control method of water, for controlling the load of compressor to reduce the energy consumption of entire unit.Above-mentioned multimode unit temperature control method of water, sets the leaving water temperature value T0 and leaving water temperature deviation △ T1 and △ T2, △ T2 > △ T1 of heat exchanger, and mainboard detects unit number of modules N.After unit is stable, detect the practical leaving water temperature value Tx of heat exchanger in continuous time x, it is respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2) and the opening size of N number of module electronic expansion valve is adjusted according to comparison result.By above-mentioned adjusting, so that when (into) leaving water temperature of reality (into) leaving water temperature of heat exchanger close to setting, compressor is run under load appropriate, to being effectively prevented from unit frequent start-stop, effectively maintaining practical stable in outlet water temperature and effectively reducing the energy consumption of average single module compressor, the energy consumption of entire unit is reduced.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of multimode unit temperature control method of water.
Background technique
When cold (heat) the water set structure of multimode designs, design scheme is mostly that multiple independent coolant systems share a big shell
Heat exchange of heat pipe.Share the inlet and outlet temperature of the same position Inlet and outlet water temperature sensing package detection simultaneously to control modules compressor
The load of start and stop and compressor.This method is unfavorable for the energy-saving run of unit.Simultaneously when practical (into) leaving water temperature is close
Set (into) leaving water temperature when, if certain module compressor start, there are water temperature drop after compressor start to set temperature with
Under, the problem of being frequent start and stop so as to cause compressor.
Summary of the invention
When it is an object of the invention to for the operation of existing multimode unit, compressor load is big, cooling is fast, into standby
Time used in state is short and leads to unit frequent start-stop, compressor load variation cause practical leaving water temperature it is unstable, occur wave
It is dynamic, and average single module compressor consumes energy larger problem, unit frequent start-stop can effectively be avoided, remain real by providing one kind
Border stable in outlet water temperature and the multimode unit temperature control method of water for effectively reducing average single module energy consumption of compressor.
A kind of multimode unit temperature control method of water, comprising the following steps:
Set leaving water temperature value T0 and leaving water temperature deviation △ T1 and △ T2, △ T2 > the △ T1 of heat exchanger；
Detect unit number of modules N；
After unit is stable, the practical leaving water temperature value Tx of heat exchanger in continuous time x is detected；
It is respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2), according to comparison result, adjusts unit mould
The opening size of electric expansion valve in block.
It is described in one of the embodiments, to be respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2),
According to comparison result, the step of opening size of electric expansion valve, includes: in adjusting set modules
If Tx > (T0+ △ T2), the opening size of electric expansion valve is remained unchanged in all modules.
It is described in one of the embodiments, to be respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2),
According to comparison result, the step of adjusting the opening size of set modules electric expansion valve further include:
If T0 < Tx≤(T0+ △ T1), the opening size of electric expansion valve is remained unchanged in all modules.
It is described in one of the embodiments, to be respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2),
According to comparison result, the step of adjusting the opening size of electric expansion valve in set modules further include:
If (T0+ △ T1) < Tx≤(T0+ △ T2), the maximum N1 module of compressor load in all modules is detected, 1≤
N1 < N, the aperture for adjusting electric expansion valve in the N1 module reduce.
The step of aperture for adjusting electric expansion valve in the N1 module reduces in one of the embodiments, is wrapped
It includes:
Before the aperture for adjusting the N1 module electronic expansion valve, opening for the N1 module electronic expansion valve is obtained
Degree size is F1；
The aperture decreasing value for adjusting electric expansion valve in the N1 module is △ F1, △ F1=F1/ (k × N), K > 1.
The K=5 in one of the embodiments,.
After the unit is stable in one of the embodiments, the practical water outlet of heat exchanger in continuous time x is detected
The step of temperature value Tx includes:
The practical leaving water temperature value of a heat exchanger, continuous time x >=m × t, m >=1, continuous time are detected every time t
Detect that the practical leaving water temperature value Tx of heat exchanger includes m testing result Tx1, Tx2 ... Txm in x；
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T2), then the aperture of electric expansion valve is kept not in all modules
Become；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than T0, and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T1), then all modules
The opening size of middle electric expansion valve remains unchanged；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T1), and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T2), then
The maximum N1 module of compressor load in all modules is detected, 1≤N1 < N adjusts electric expansion valve in the N1 module
Aperture reduce.
It is further comprising the steps of in one of the embodiments:
After the aperture reduction for adjusting electric expansion valve in the N1 module, under the stable state of unit, the 1st inspection
Survey the practical leaving water temperature value Ty1 of heat exchanger in continuous time y；
It is respectively compared Ty1 and T0, Ty1 and (T0+ △ T1), according to comparison result, adjusts electric expansion valve in set modules
Opening size；
If (T0+ △ T1) < Ty1≤(T0+ △ T2) detects the module that compressor load in all modules is more than 50%
And the maximum M1 module of compressor load is therefrom selected, 1≤M1 < N adjusts opening for electric expansion valve in the M1 module
Degree reduces；
After the aperture reduction for adjusting electric expansion valve in the M1 module, the 2nd unit runing time t1, the 2nd inspection
Survey the practical leaving water temperature value Ty2 of heat exchanger in continuous time y；
It is respectively compared Ty2 and T0, Ty2 and (T0+ △ T1), if (T0+ △ T1) < Ty2≤(T0+ △ T2), detection is all
In module compressor load be more than 50% module and therefrom select the maximum M2 module of compressor load, 1≤M2 < N, tune
The aperture for saving electric expansion valve in the M2 module reduces；
……
After the aperture reduction for adjusting module M (q-1) electric expansion valve, the q times unit runing time t1, the q times inspection
Survey the practical leaving water temperature value Tyq of heat exchanger in continuous time y, q >=3；
It is respectively compared Tyq and T0, Tyq and (T0+ △ T1), if (T0+ △ T1) < Tyq≤(T0+ △ T2), detection is all
In module compressor load be more than 50% module and therefrom select the maximum Mq module of compressor load, 1≤Mq < N, tune
The aperture for saving electric expansion valve in the Mq module reduces.
Relatively Tyq and T0 and Tyq and (the T0+ △ T1) in one of the embodiments, adjust electricity in set modules
The step of opening size of sub- expansion valve includes:
If T0 < Tyq≤(T0+ △ T1), q >=1 then keeps the opening size of electric expansion valve in all modules constant.
The step of aperture for adjusting electric expansion valve in the Mq module reduces in one of the embodiments, is wrapped
It includes:
Under the stable state of unit, the opening size for obtaining electric expansion valve in the Mq module is Pq；
The aperture decreasing value for adjusting electric expansion valve in the Mq module is △ Pq, △ Pq=Pq/ (a × N), a > 1.
The a=10 in one of the embodiments,.
Beneficial effects of the present invention:
Multimode unit temperature control method of water of the invention, leaving water temperature value T0 and the leaving water temperature for setting heat exchanger are inclined
Difference △ T1 and △ T2, △ T2 > △ T1, mainboard detects unit number of modules N, after unit is stable, detects in continuous time t
The practical leaving water temperature value Tx of heat exchanger compares Tx and (T0+ △ T2), and according to comparative structure, adjusts electricity in set modules
The compressor load of N number of module is adjusted in the opening size of sub- expansion valve, realization.By above-mentioned adjusting, so that when heat exchange
When (into) leaving water temperature of the close setting of reality (into) leaving water temperature of device, compressor is run under load appropriate, i.e., actually
It is run under leaving water temperature T0 < Tx≤T0+ △ T1, to be effectively prevented from unit frequent start-stop, effectively maintain practical water temperature out
The energy consumption of average single module compressor is stablized and effectively reduced to degree, reduces the energy consumption of entire unit.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the flow diagram of the multimode unit multimode unit temperature control method of water of one embodiment of the invention；
Fig. 2 is the multimode machine set system schematic diagram of one embodiment of the invention.
Description of symbols:
Heat exchanger 100
Water inlet pipe 110
Outlet pipe 120
Refrigerant passage 200
Electromagnetic expanding valve 210
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It is only exemplary to the description of specific embodiment below, it should be understood that herein
Described specific implementation is only used to explain the present invention, and is definitely not to the present invention and its application or the limitation of usage.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.On the contrary, intermediary element is not present when element is connect referred to as " direct " with another element.This paper institute
The term "vertical", "horizontal", "left" and "right" used and similar statement are for illustrative purposes only.
In the description of the present invention, it is to be understood that, term " length ", " width ", " thickness ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Please refer to Fig. 1 and Fig. 2, a kind of multimode unit temperature control method of water, comprising the following steps:
Set leaving water temperature value T0 and leaving water temperature deviation △ T1 and △ T2, △ T2 > the △ T1 of heat exchanger.T0 is
Different inlet/outlet temperature can be arranged in inlet and outlet temperature set by user, the different refrigeration requirement of user, and unit is according to Inlet and outlet water
Desired temperature control plus unloading, electronic expansion valve regulation, coolant quantity control etc., so that practical inlet and outlet temperature reaches setting
Inlet and outlet temperature, to meet user's refrigeration requirement.△ T2 be leaving water temperature deviation, size be Inlet and outlet water set the temperature difference/
N, Inlet and outlet water, which sets the temperature difference, can set value as user.△ T1 can be the value that can be set, optionally, △ T1=1 DEG C.
Mainboard detects unit number of modules N.
After unit is stable, such as unit operation 20min or so, start the reality for detecting heat exchanger in continuous time x
Leaving water temperature value Tx.
It is respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2), according to comparison result, adjusts N number of mould
The opening size of block electric expansion valve.By adjust electric expansion valve open increase that is big or turning down control system circulating refrigerant amount or
It reduces.When compressor load is big, coolant quantity is more, and pressure is higher, and electric current is bigger, and water temperature reduces faster, and mainboard is according to control
Logic processed turns down compressor load.When coolant quantity is few, pressure is low, and electric current is small, and water temperature reduces slowly, then it is negative to increase compressor for mainboard
Lotus.The fan-out capability of compressor is both maintained to the degree to match with various conditions.The load of compressor is adjusted
After whole, refrigerant pressure can be maintained at opposite proper level with temperature compared with water temperature in big case tube heat exchanger, and if refrigerant temperature
In the certain situation of water temperature difference, coolant quantity is bigger, then the cooling capacity that water is absorbed from refrigerant is more, that is, heat exchanger heat exchange amount increases
Greatly；Otherwise similarly.
Optionally, if Tx > (T0+ △ T2), the opening size of electric expansion valve is remained unchanged in all N number of modules.
Difference at this time between practical leaving water temperature Tx and the target leaving water temperature T0 of setting is also bigger than normal, therefore the compression in each mould group
Machine need to export energy according to current based model for load duration, not need the opening size of adjustment electric expansion valve, that is, have no need to change
Coolant system circulating refrigerant amount.
Optionally, if T0 < Tx≤(T0+ △ T1), the opening size of electric expansion valve is kept in all N number of modules
It is constant.The fan-out capability of the compressor in each mould group is maintained at the degree to match with various conditions at this time, need to be according to current
Based model for load duration exports energy, does not need the opening size of adjustment electric expansion valve, that is, haves no need to change coolant system circulation
Coolant quantity.
Optionally, if (T0+ △ T1) < Tx≤(T0+ △ T2), practical leaving water temperature Tx has been approached leaving water temperature and sets at this time
Definite value T0, it is therefore desirable to reduce unit output load, cause very much leaving water temperature to reach fastly to avoid water temperature reduction and set out water temperature
Unit is standby when spending, and water temperature unit after user exports energy starts again.Specifically, mainboard detects compresses in N number of module
Machine load maximum module N1,1≤N1 < N.Machine set compressor load is calculated by compressor current, and compressor current is logical
The current detecting plate crossed in electric cabinet is measured, and compressor load has intuitive display on manual operator, between manual operator and mainboard
There is communication, by the above measure, mainboard can detect the compressor load of specific module respectively.It is apparent that N1 may be one
A module, it is also possible to which the identical multiple modules of load, the aperture for adjusting the electric expansion valve of the module N1 reduce.It is optional
Ground, if before the aperture for adjusting the module N1 electric expansion valve, the opening size of the module N1 electric expansion valve is F1.It adjusts
The aperture for saving the module N1 electric expansion valve reduces, and aperture decreasing value is △ F1, △ F1=F1/ (k × N), K > 1.Passing through will
The aperture of valve reduces △ F1=F1/ (k × N), reduces the cold no amount recycled in coolant system, reduces the load of compressor, keep away
Exempt from water temperature and be reduced to inlet and outlet temperature T0 set by user quickly, causes unit to enter the time used in standby mode short and cause
Unit frequent start-stop.Optionally, the K=5.Electric expansion valve is made of motor and needle and other component, when motor turns one
Needle advances a distance when circle, takes a step forward at this time as electric expansion valve, turning down stride is motor action circle number.Existing
There is aperture F1 on the basis of aperture to turn down 1/5N.At this point, the maximum module of compressor load in preferential adjusting, because of and compressor
Heavy-duty service is compared, and underrun is more energy saving, and when whole system needs to reduce the load of compressor, selection reduces high
The load of the compressor of load operation is more energy saving for whole system.
As shown in Fig. 2, water enters big case tube heat exchanger 200 from water inlet pipe 110 when unit is refrigeration or heating mode operation
It exchanges heat one by one with the refrigerant of multimode, client is then supplied to by outlet pipe 120 after the commutation of left side water chamber.It is transported in unit
When row, water temperature when modules exchange heat is different, therefore modules compressor load should be different for theory,
This patent is entered 200 coolant quantity of heat exchanger to control each module load, is reached by mainboard detection module number, control modules
To energy-saving effect.
Continuing with referring to Fig. 1, after the unit is stable in one of the embodiments, detects and changed in continuous time x
The step of practical leaving water temperature value Tx of hot device includes:
The practical leaving water temperature value of a heat exchanger, continuous time x >=m × t, m >=1, continuous time are detected every time t
The practical leaving water temperature value Tx of the heat exchanger detected in x includes m testing result Tx1, Tx2 ... Txm；
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T2), then the aperture of electric expansion valve is kept in all N number of modules
It is constant；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than T0, and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T1), then all N number of
The opening size of electric expansion valve remains unchanged in module；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T1), and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T2), then
The maximum N1 module of compressor load in all N number of modules is detected, 1≤N1 < N adjusts electronic expansion in the N1 module
The aperture of valve reduces.In the present embodiment, optionally, t=3s, m=20, x=1min.
It is further comprising the steps of in one of the embodiments, continuing with referring to Fig. 1:
After the aperture reduction for adjusting the module N1 electric expansion valve, under the stable state of unit, in the present embodiment
Stable operation of unit state under can be the module N1 electric expansion valve aperture reduce after, unit run 10min after.The
The practical leaving water temperature value Ty1 of heat exchanger in 1 detection continuous time y；
It is respectively compared Ty1 and T0, Ty1 and (T0+ △ T1) and N number of set modules electric expansion valve is adjusted according to comparison result
Opening size；
If (T0+ △ T1) < Ty1≤(T0+ △ T2) detects the mould that compressor load in all N number of modules is more than 50%
Block simultaneously therefrom selects the maximum module M1 of compressor load, 1≤M1 < N, adjusts opening for electric expansion valve in the M1 module
Degree reduces；
After the aperture reduction for adjusting electric expansion valve in the M1 module, the 2nd unit runing time t1, the 2nd inspection
Survey the practical leaving water temperature value Ty2 of heat exchanger in continuous time y；
It is respectively compared Ty2 and T0, Ty2 and (T0+ △ T1), if (T0+ △ T1) < Ty2≤(T0+ △ T2), detection is all
In N number of module compressor load be more than 50% module and therefrom select the maximum M2 module of compressor load, 1≤M2 < N,
The aperture for adjusting electric expansion valve in the M2 module reduces；
……
After the aperture reduction for adjusting module M (q-1) electric expansion valve, the q times unit runing time t1, the q times inspection
Survey the practical leaving water temperature value Tyq of heat exchanger in continuous time y, q >=3；
It is respectively compared Tyq and T0, Tyq and (T0+ △ T1), if (T0+ △ T1) < Tyq≤(T0+ △ T2), detection is all
In N number of module compressor load be more than 50% module and therefrom select the maximum Mq module of compressor load, 1≤Mq < N,
The aperture for adjusting electric expansion valve in the Mq module reduces.
Optionally, if T0 < Tyq≤(T0+ △ T1), q >=1 then keep the aperture of all N number of module electronic expansion valves big
It is small constant.
Continuous time, y was set by the user, optionally, y=3min.
The step of aperture for adjusting the module Mq electric expansion valve reduces in one of the embodiments, include:
If (T0+ △ T1) < Tyq≤(T0+ △ T2) detects the mould that compressor load in all N number of modules is more than 50%
Block simultaneously therefrom selects the maximum Mq module of compressor load, and 1≤Mq < N adjusts electric expansion valve in the Mq module
Aperture reduces.The step of aperture reduction of the electric expansion valve for adjusting the Mq module includes:
After (q-1) secondary unit runing time t1, the opening size for obtaining the module Mq electric expansion valve is Pq；
The aperture decreasing value for adjusting electric expansion valve in the Mq module is △ Pq, △ Pq=Pq/ (a × N), a > 1.
The a=10 in one of the embodiments,.
Specifically, after the aperture reduction for adjusting the module N1 electric expansion valve, under the stable state of unit, the 1st
The practical leaving water temperature value Ty1 of heat exchanger in secondary detection continuous time y.It is respectively compared Ty1 and T0, Ty1 and (T0+ △ T1), root
According to comparison result, the opening size of N number of module electronic expansion valve is adjusted.If T0 < Ty1≤(T0+ △ T1), keeps N number of module
The opening size of electric expansion valve.If (T0+ △ T1) < Ty1≤(T0+ △ T2), it is super to detect compressor load in N number of module
It crosses 50% module and therefrom selects the maximum M1 module of compressor load, 1≤M1 < N adjusts the electricity of the M1 module
The aperture of sub- expansion valve reduces.The preceding aperture for adjusting the module N1 electric expansion valve under the stable state of unit is located to reduce
Afterwards, the opening size of the module M1 electric expansion valve is P1.The aperture decreasing value for adjusting the module M1 electric expansion valve is
△ P1, △ P1=P1/ (a × N), a > 1.Optionally, the a=10.The aperture of the module M1 electric expansion valve is reduced
P1/ (10 × N) reduces the coolant quantity for entering coolant circulating system, will be above the load reduction of 50% duty compressor, makes entire
The compressor of system is run at low load, reduces the energy consumption of whole system.Adjust the aperture of the module M1 electric expansion valve
After decreasing value is △ P1, after the 2nd time unit is stable, the practical leaving water temperature value of heat exchanger in the 2nd detection continuous time y
Ty2.It is respectively compared Ty2 and T0, Ty2 and (T0+ △ T1), according to comparison result, the aperture for adjusting N number of module electronic expansion valve is big
It is small.If T0 < Ty2≤(T0+ △ T1), keeps the opening size of N number of module electronic expansion valve.(if T0+ △ T1) < Ty2≤
(T0+ △ T2), then detect compressor load in N number of module be more than 50% module and therefrom select the maximum mould of compressor load
Block M2,1≤M3 < N, the aperture for adjusting the electric expansion valve of the module M1 reduce.After being located under the stable state of unit,
The opening size of the module M2 electric expansion valve is P2.The aperture decreasing value for adjusting the module M2 electric expansion valve is △
P2, △ P2=P2/ (a × N), a > 1.After the aperture decreasing value for adjusting the module M2 electric expansion valve is △ P2, (q-1)
After secondary unit is stable, the practical leaving water temperature value Tyq of heat exchanger in q >=3, the q times detection continuous time y.It is respectively compared
Tyq adjusts the opening size of N number of module electronic expansion valve according to comparison result with T0, Tyq and (T0+ △ T1).Judge repeatedly,
By the load reduction of compressor to the load value to match with the various conditions of whole system, the value phase ideal with this herein
Matched condition is T0 < Ty1≤(T0+ △ T1), keeps the opening size continuous service of N number of module electronic expansion valve, realizes
When multimode unit refrigeration (heating) operation, by controlling the aperture of electric expansion valve 210, following in refrigerant passage 200 is adjusted
Ring coolant quantity, and then adjust compressor load and adjust the heat exchange amount of big case tube heat exchanger 200, thus make multimode unit with
Compared with underrun, reach energy-saving effect.
Optionally, it continuing with referring to Fig. 1, after the unit is stable in one of the embodiments, detects the q times
The step of practical leaving water temperature value Tyq of heat exchanger, includes: in unit continuous time t1
Every time t2 detect a heat exchanger practical leaving water temperature value, continuous time t1 >=m × t2, m >=1, continuously
The practical leaving water temperature value Tyq of the heat exchanger detected in time t1 includes m testing result Ty1, Ty2 ... Tym；
Only Ty1, Ty2 ... Tym is all larger than T0, and Ty1, Ty2 ... Tym are respectively less than and are equal to T0+ △ T1), then N number of module is electric
The aperture of sub- expansion valve remains unchanged.
Alternatively,
Only Ty1, Ty2 ... Tym is all larger than (T0+ △ T1), and Ty1, Ty2 ... Tym are respectively less than and are equal to (T0+ △ T2), then
Detect compressor load in N number of module be more than 50% module and therefrom select the maximum module Mq of compressor load, 1≤Mq <
N, the aperture for adjusting the electric expansion valve of the module Mq reduce.
Optionally, t2=3s, m=20, t1=1min.
Multimode unit temperature control method of water of the invention, leaving water temperature value T0 and the leaving water temperature for setting heat exchanger are inclined
Difference △ T1 and △ T2, △ T2 > △ T1, mainboard detects unit number of modules N, after unit is stable, detects in continuous time t
The practical leaving water temperature value Tx of heat exchanger compares Tx and (T0+ △ T2), and according to comparative structure, adjusts electricity in set modules
The compressor load of N number of module is adjusted in the opening size of sub- expansion valve, realization.By above-mentioned adjusting, so that when heat exchange
When (into) leaving water temperature of the close setting of reality (into) leaving water temperature of device, compressor is run under load appropriate, i.e., actually
It is run under leaving water temperature T0 < Tx≤T0+ △ T1, to be effectively prevented from unit frequent start-stop, effectively maintain practical water temperature out
The energy consumption of average single module compressor is stablized and effectively reduced to degree, reduces the energy consumption of entire unit.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (11)
1. a kind of multimode unit temperature control method of water, which comprises the following steps:
Set leaving water temperature value T0 and leaving water temperature deviation △ T1 and △ T2, △ T2 > the △ T1 of heat exchanger；
Detect unit number of modules N；
After unit is stable, the practical leaving water temperature value Tx of heat exchanger in continuous time x is detected；
It is respectively compared Tx and T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2), according to comparison result, is adjusted in set modules
The opening size of electric expansion valve.
2. multimode unit temperature control method of water according to claim 1, which is characterized in that it is described be respectively compared Tx with
T0, Tx adjust the aperture of electric expansion valve in set modules according to comparison result with (T0+ △ T1) and Tx and (T0+ △ T2)
The step of size includes:
If Tx > (T0+ △ T2), the opening size of electric expansion valve is remained unchanged in all modules.
3. multimode unit temperature control method of water according to claim 1, which is characterized in that it is described be respectively compared Tx with
T0, Tx and (T0+ △ T1) and Tx and (T0+ △ T2), according to comparison result, the aperture for adjusting set modules electric expansion valve is big
Small step further include:
If T0 < Tx≤(T0+ △ T1), the opening size of electric expansion valve is remained unchanged in all modules.
4. multimode unit temperature control method of water according to claim 1, which is characterized in that it is described be respectively compared Tx with
T0, Tx adjust the aperture of electric expansion valve in set modules according to comparison result with (T0+ △ T1) and Tx and (T0+ △ T2)
The step of size further include:
If (T0+ △ T1) < Tx≤(T0+ △ T2), detects the maximum N1 module of compressor load in all modules, 1≤N1 <
N, the aperture for adjusting electric expansion valve in the N1 module reduce.
5. multimode unit temperature control method of water according to claim 4, which is characterized in that described to adjust the N1 mould
The step of aperture reduction of electric expansion valve, includes: in block
Before the aperture for adjusting the N1 module electronic expansion valve, the aperture for obtaining the N1 module electronic expansion valve is big
Small is F1；
The aperture decreasing value for adjusting electric expansion valve in the N1 module is △ F1, △ F1=F1/ (k × N), K > 1.
6. multimode unit temperature control method of water according to claim 5, which is characterized in that the K=5.
7. according to multimode unit temperature control method of water described in Claims 2 or 3 or 4, which is characterized in that the unit operation
After stabilization, the step of practical leaving water temperature value Tx of heat exchanger, includes: in detection continuous time x
The practical leaving water temperature value of a heat exchanger, continuous time x >=m × t, m >=1, in continuous time x are detected every time t
Detect that the practical leaving water temperature value Tx of heat exchanger includes m testing result Tx1, Tx2 ... Txm；
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T2), then the aperture of electric expansion valve remains unchanged in all modules；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than T0, and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T1), then electric in all modules
The opening size of sub- expansion valve remains unchanged；
Alternatively,
Only Tx1, Tx2 ... Txm is all larger than (T0+ △ T1), and Tx1, Tx2 ... Txm are respectively less than and are equal to (T0+ △ T2), then detect
The maximum N1 module of compressor load in all modules, 1≤N1 < N adjust opening for electric expansion valve in the N1 module
Degree reduces.
8. multimode unit temperature control method of water according to claim 4, which is characterized in that further comprising the steps of:
After the aperture reduction for adjusting electric expansion valve in the N1 module, under the stable state of unit, the 1st detection connects
The practical leaving water temperature value Ty1 of heat exchanger in continuous time y；
It is respectively compared Ty1 and T0, Ty1 and (T0+ △ T1), according to comparison result, electric expansion valve is opened in adjusting set modules
Spend size；
If (T0+ △ T1) < Ty1≤(T0+ △ T2), detect compressor load in all modules be more than 50% module and from
The middle maximum M1 module of selection compressor load, 1≤M1 < N, the aperture for adjusting electric expansion valve in the M1 module subtract
It is small；
After the aperture reduction for adjusting electric expansion valve in the M1 module, the 2nd unit runing time t1, the 2nd detection connects
The practical leaving water temperature value Ty2 of heat exchanger in continuous time y；
It is respectively compared Ty2 and T0, Ty2 and (T0+ △ T1), if (T0+ △ T1) < Ty2≤(T0+ △ T2), detects all modules
Middle compressor load is more than 50% module and therefrom selects the maximum M2 module of compressor load, and 1≤M2 < N adjusts institute
The aperture for stating electric expansion valve in M2 module reduces；
……
After the aperture reduction for adjusting module M (q-1) electric expansion valve, the q times unit runing time t1, the q times detection connects
The practical leaving water temperature value Tyq of heat exchanger, q >=3 in continuous time y；
It is respectively compared Tyq and T0, Tyq and (T0+ △ T1), if (T0+ △ T1) < Tyq≤(T0+ △ T2), detects all modules
Middle compressor load is more than 50% module and therefrom selects the maximum Mq module of compressor load, and 1≤Mq < N adjusts institute
The aperture for stating electric expansion valve in Mq module reduces.
9. multimode unit temperature control method of water according to claim 8, which is characterized in that it is described relatively Tyq and T0 with
And Tyq and (T0+ △ T1), the step of adjusting the opening size of electric expansion valve in set modules, include:
If T0 < Tyq≤(T0+ △ T1), q >=1 then keeps the opening size of electric expansion valve in all modules constant.
10. multimode unit temperature control method of water according to claim 8, which is characterized in that the adjusting is Mq described
The step of aperture reduction of electric expansion valve, includes: in module
Under the stable state of unit, the opening size for obtaining electric expansion valve in the Mq module is Pq；
The aperture decreasing value for adjusting electric expansion valve in the Mq module is △ Pq, △ Pq=Pq/ (a × N), a > 1.
11. multimode unit temperature control method of water according to claim 10, which is characterized in that the a=10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113275.0A CN109237712B (en) | 2018-09-25 | 2018-09-25 | Water temperature control method for multi-module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113275.0A CN109237712B (en) | 2018-09-25 | 2018-09-25 | Water temperature control method for multi-module unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237712A true CN109237712A (en) | 2019-01-18 |
| CN109237712B CN109237712B (en) | 2019-12-27 |
Family
ID=65057270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113275.0A Active CN109237712B (en) | 2018-09-25 | 2018-09-25 | Water temperature control method for multi-module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237712B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959056A (en) * | 2021-10-29 | 2022-01-21 | 青岛海尔空调电子有限公司 | Control method and control device for air conditioner and air conditioner |
| CN115981389A (en) * | 2022-12-09 | 2023-04-18 | 江苏拓米洛高端装备股份有限公司 | Control method and device of temperature regulating system and environmental test chamber |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009092337A (en) * | 2007-10-11 | 2009-04-30 | Panasonic Corp | Air conditioner |
| CN103438547A (en) * | 2013-09-23 | 2013-12-11 | 深圳麦克维尔空调有限公司 | Control method of electronic expansion valve |
| JP2016011774A (en) * | 2014-06-27 | 2016-01-21 | ダイキン工業株式会社 | Liquid cooling device |
| JP2016075431A (en) * | 2014-10-07 | 2016-05-12 | 希吉 北川 | Load operation control device |
| JP2016156513A (en) * | 2015-02-23 | 2016-09-01 | 日立アプライアンス株式会社 | Heat pump water heater |
| CN106288175A (en) * | 2016-08-12 | 2017-01-04 | 珠海格力电器股份有限公司 | Modular combination air conditioning system and compressor control device thereof and method |
| JP2017009269A (en) * | 2015-06-26 | 2017-01-12 | ダイキン工業株式会社 | Air conditioning system |
| CN106482405A (en) * | 2016-09-21 | 2017-03-08 | 珠海格力电器股份有限公司 | Air-Cooled Heat Pump Unit and its control method, device and system |
| CN106500254A (en) * | 2016-11-02 | 2017-03-15 | 广东志高暖通设备股份有限公司 | Module water dispenser system, air-conditioning device and module water dispenser control method |
| CN107560173A (en) * | 2017-08-03 | 2018-01-09 | 广东美的暖通设备有限公司 | Heat pump water-heating machine and its control method, control device |
| CN107763792A (en) * | 2017-11-10 | 2018-03-06 | 四川长虹空调有限公司 | VRF Air Conditioning System control method |
| JP2018132219A (en) * | 2017-02-13 | 2018-08-23 | 株式会社富士通ゼネラル | Air conditioning device |
| JP2018146169A (en) * | 2017-03-06 | 2018-09-20 | ダイキン工業株式会社 | air conditioner |
-
2018
- 2018-09-25 CN CN201811113275.0A patent/CN109237712B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009092337A (en) * | 2007-10-11 | 2009-04-30 | Panasonic Corp | Air conditioner |
| CN103438547A (en) * | 2013-09-23 | 2013-12-11 | 深圳麦克维尔空调有限公司 | Control method of electronic expansion valve |
| JP2016011774A (en) * | 2014-06-27 | 2016-01-21 | ダイキン工業株式会社 | Liquid cooling device |
| JP2016075431A (en) * | 2014-10-07 | 2016-05-12 | 希吉 北川 | Load operation control device |
| JP2016156513A (en) * | 2015-02-23 | 2016-09-01 | 日立アプライアンス株式会社 | Heat pump water heater |
| JP2017009269A (en) * | 2015-06-26 | 2017-01-12 | ダイキン工業株式会社 | Air conditioning system |
| CN106288175A (en) * | 2016-08-12 | 2017-01-04 | 珠海格力电器股份有限公司 | Modular combination air conditioning system and compressor control device thereof and method |
| CN106482405A (en) * | 2016-09-21 | 2017-03-08 | 珠海格力电器股份有限公司 | Air-Cooled Heat Pump Unit and its control method, device and system |
| CN106500254A (en) * | 2016-11-02 | 2017-03-15 | 广东志高暖通设备股份有限公司 | Module water dispenser system, air-conditioning device and module water dispenser control method |
| JP2018132219A (en) * | 2017-02-13 | 2018-08-23 | 株式会社富士通ゼネラル | Air conditioning device |
| JP2018146169A (en) * | 2017-03-06 | 2018-09-20 | ダイキン工業株式会社 | air conditioner |
| CN107560173A (en) * | 2017-08-03 | 2018-01-09 | 广东美的暖通设备有限公司 | Heat pump water-heating machine and its control method, control device |
| CN107763792A (en) * | 2017-11-10 | 2018-03-06 | 四川长虹空调有限公司 | VRF Air Conditioning System control method |
Non-Patent Citations (2)
| Title |
|---|
| 王志文: ""广州地铁内燃机车空调频繁启停问题分析及解决方案"", 《机电工程技术》 * |
| 赵树兴，常平: ""商场建筑中央空调系统提前启停运行策略研究"", 《建筑热能通风空调》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959056A (en) * | 2021-10-29 | 2022-01-21 | 青岛海尔空调电子有限公司 | Control method and control device for air conditioner and air conditioner |
| CN115981389A (en) * | 2022-12-09 | 2023-04-18 | 江苏拓米洛高端装备股份有限公司 | Control method and device of temperature regulating system and environmental test chamber |
| CN115981389B (en) * | 2022-12-09 | 2024-01-12 | 江苏拓米洛高端装备股份有限公司 | Control method and device of temperature regulating system and environment test box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109237712B (en) | 2019-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11585561B2 (en) | Control method and device for air conditioning system and air conditioning system | |
| US6637226B2 (en) | Constant-temperature liquid circulating apparatus | |
| EP3708930B1 (en) | Air conditioner control method and device and air conditioner | |
| CN108700359B (en) | Compressor capacity modulation system for multiple compressors | |
| US20150059373A1 (en) | Superheat and sub-cooling control of refrigeration system | |
| CN109237712A (en) | Multimode unit temperature control method of water | |
| EP3477226A1 (en) | Multi-split system and control method thereof | |
| CN104006445A (en) | Multi-linkage air conditioner and control method thereof | |
| US11668495B2 (en) | Floating evaporator saturated suction temperature systems and methods | |
| CN113803909B (en) | Control method, system and device of air source heat pump and storage medium | |
| CN105698451A (en) | Control method and system for preventing filth blockage and damage of electronic expansion valve and refrigerator | |
| CN109059283B (en) | Hot water system | |
| JP3326141B2 (en) | Constant temperature refrigerant liquid circulation device | |
| CN111059738A (en) | Heat recovery side control system of heat recovery centrifugal unit | |
| CN109341122A (en) | A kind of refrigeration system and control method | |
| CN115628530A (en) | Fan control method, device and unit | |
| CN103574954B (en) | A kind of energy feedback type heat exchange system | |
| CN107769248A (en) | Data center's energy supplying system and method | |
| CN112629022B (en) | Multi-split water heater control method and device and multi-split water heater | |
| CN103335407B (en) | Air-cooled heat-pump cold water-heating machine system and capacity output control thereof | |
| CN113432354B (en) | Air source heat pump control method and device, air source heat pump and storage medium | |
| CN209085106U (en) | A kind of refrigeration system | |
| CN102818334B (en) | Method for running heating and cooling system reliably in conventional running blind area | |
| JP2017198383A (en) | Heat pump type water heater | |
| CN209623013U (en) | A kind of temperature control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |