CN106969473A - A kind of air-conditioner set control method - Google Patents
A kind of air-conditioner set control method Download PDFInfo
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- CN106969473A CN106969473A CN201710279899.9A CN201710279899A CN106969473A CN 106969473 A CN106969473 A CN 106969473A CN 201710279899 A CN201710279899 A CN 201710279899A CN 106969473 A CN106969473 A CN 106969473A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 132
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 230000007423 decrease Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioner set control method, leaving water temperature Tewo and sets target temperature T is obtainedd；Calculating difference △ T=Tewo Td；Judge △ T whether in setting difference range；If it is not, then judging water temperature rate of change whether in the range of setting rate of change；If it is not, then judging that the frequency is started shooting/shut down to compressor whether in the range of setting start/shutdown frequency；/ shut down the frequency if it is not, then being started shooting according to △ T, water temperature rate of change, compressor and determine that compressor is increased/and subtract and stop interval time, stop after interval time arrives, controlling compressor start/shutdown of wherein one shutdown/open state increasing/subtracting；Considered difference △ T, water temperature rate of change, compressor start shooting/shut down the frequency; the start and stop of compressor in unit are controlled, so as to avoid because compressor start is frequent caused by the too fast feedback of water temperature, and then compressor service life are improved; slow down fluctuating temperature, meet the requirement of user's comfortableness.
Description
Technical field
It is to be related to a kind of air-conditioner set control method specifically the invention belongs to air-conditioning technical field.
Background technology
The air-conditioner set of multimode Unit Combination, the start and stop of its system are carried out according to target water temperature and the difference of actual water temperature
Control.But in actual use and operation, because the load of user is changeable, only according to target water temperature and the difference of actual water temperature
Value, which carries out start-up and shut-down control, can cause the start and stop of high frequent, cause water temperature larger fluctuation, and then cause room temperature to neglect height to neglect
It is low, cause poor user experience.
The content of the invention
The invention provides a kind of air-conditioner set control method, it is to avoid high frequent start and stop, fluctuating temperature is small.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of air-conditioner set control method, the air-conditioner set includes multiple handpiece Water Chilling Units, and each described handpiece Water Chilling Units include
Compressor, condenser, the evaporator being sequentially connected, the water inlet of each described evaporator are connected with water inlet pipe respectively, each
The delivery port of described evaporator is connected with outlet pipe respectively；
The control method includes：
Obtain leaving water temperature Tewo and sets target temperature Td；
Calculating difference △ T=Tewo-Td；
Judge △ T whether in setting difference range；
If it is not, then judging water temperature rate of change whether in the range of setting rate of change；
If it is not, then judging that the frequency is started shooting/shut down to compressor whether in the range of setting start/shutdown frequency；
/ shut down the frequency if it is not, then being started shooting according to △ T, water temperature rate of change, compressor and determine that compressor is increased/and subtract and stop interval time,
Stop after interval time arrives, controlling compressor start/shutdown of wherein one shutdown/open state increasing/subtracting.
Further, determine that compressor increases interval time according to △ T, water temperature rate of change, the compressor start frequency, specifically
Including：
（1）In △ T >=first setting difference, then all compressors are controlled to start shooting；
（2）When second sets difference≤setting differences of △ T ＜ first：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting start frequency
≤ compressor start frequency ＜ second sets the start frequency；
If so, then compressor increase interval time is that interval time is increased in the first setting；
（3）When the 3rd sets difference≤setting differences of △ T ＜ second：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting start frequency
≤ compressor start frequency ＜ the 3rd sets the start frequency；
If so, then compressor increase interval time is that interval time is increased in the second setting；
（4）When the 4th setting difference ＜ △ T ＜ the 3rd set difference：
Judge whether to meet the setting start frequency of the setting rate of change of water temperature rate of change >=3rd and the compressor start frequency >=3rd
It is secondary；
If so, then compressor increase interval time is that interval time is increased in the 3rd setting；
Wherein, the first setting increases the setting increase setting of interval time ＜ the 3rd of interval time ＜ second and increases interval time；The
Four setting difference ＞ 0.
Further, determine that compressor subtracts according to △ T, water temperature rate of change, the compressor shutdown frequency to stop interval time have
Body includes：
（1）When △ T ＜ the 5th set difference, then all compressor shutdowns are controlled；
（2）When the 5th sets difference≤setting differences of △ T ＜ the 6th：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ second；
If so, then compressor subtracts and stops interval time and subtract for the first setting and stop interval time；
（3）When the 6th sets difference≤setting differences of △ T ＜ the 7th：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ the 3rd；
If so, then compressor subtracts and stops interval time and subtract for the second setting and stop interval time；
（4）When the 7th sets difference≤setting differences of △ T ＜ the 8th：
Judge whether to meet the setting of the setting rate of change of water temperature rate of change >=3rd and the compressor shutdown frequency >=3rd and shut down frequency
It is secondary；
If so, then compressor subtracts and stops interval time and subtract for the 3rd setting and stop interval time；
Wherein, the first setting increases the setting increase setting of interval time ＜ the 3rd of interval time ＜ second and increases interval time；The
Eight setting difference ＜ 0.
Further, according to △ T, water temperature rate of change, compressor start the frequency determine compressor increase interval time it
Afterwards, the control method also includes：
If including the compressor increase interval time of this determination, increasing interval time with continuous n times compressor, then sentencing
Whether the variation tendency that the disconnected continuous n times compressor increases interval time is increasing or decreasing；
If so, the continuous n times compressor then to be increased to the average value of interval time as this compressor increase interval time；
Wherein, N >=3.
Further, according to △ T, water temperature rate of change, the compressor shutdown frequency determine compressor subtract stop interval time it
Afterwards, the control method also includes：
If including the compressor of this determination subtracts and stops interval time, subtracting with continuous n times compressor and stopping interval time, then sentence
The disconnected continuous n times compressor, which subtracts, stops whether the variation tendency of interval time is increasing or decreasing；
Subtract as this compressor if so, then subtracting the continuous n times compressor and stopping the average value of interval time and stop interval time；
Wherein, N >=3.
It is preferred that, compressor start/shutdown of wherein one shutdown/open state of the control is specifically included：
Increase after interval time arrives, the most short compressor start of total run time of the control in stopped status；
Subtract and stop after interval time arrives, total run time of the control in an open state most long compressor is shut down.
Further, the leaving water temperature Tewo is the water temperature in outlet pipe, and the water temperature rate of change is outlet pipe or entered
Water temperature rate of change in water pipe.
Further, the difference range that sets is more than or equal to -2 DEG C and less than or equal to 2 DEG C, the setting rate of change
Scope is less than 0.5 DEG C/30s.
Further, first difference is set as 5 DEG C, second sets difference as 4 DEG C, and the 3rd sets difference as 3 DEG C, the 4th
Difference is set as 2 DEG C；First sets rate of change as 0.5 DEG C/30s, and second sets rate of change as 1 DEG C/30s, the 3rd setting change
Rate is 1.5 DEG C/30s.
Further, the 5th difference is set as -5 DEG C, the 6th sets difference as -4 DEG C, the 7th sets difference as -3 DEG C,
8th sets difference as -2 DEG C；First sets rate of change as 0.5 DEG C/30s, and second sets rate of change as 1 DEG C/30s, the 3rd setting
Rate of change is 1.5 DEG C/30s.
Compared with prior art, advantages and positive effects of the present invention are：The air-conditioner set control method of the present invention, is obtained
Leaving water temperature Tewo and sets target temperature Td；Calculating difference △ T=Tewo-Td；Judge △ T whether in setting difference range；
If it is not, then judging water temperature rate of change whether in the range of setting rate of change；If it is not, then judging that the compressor frequency of starting shooting/shut down is
It is no to set in the range of start/shutdown frequency；If it is not, then according to △ T, water temperature rate of change, compressor start shooting/shut down the frequency determine
Compressor, which is increased/subtracted, stops interval time, stops after interval time arrives, controlling the pressure of wherein one shutdown/open state increasing/subtracting
Contracting machine start/shutdown；Difference △ T, water temperature rate of change, compressor are considered to start shooting/shut down the frequency, have been compressed in control unit
The start and stop of machine, so as to avoid high frequent start and stop, reduce fluctuating temperature, meet the water demand of user, improve user and use
Experience.
After the embodiment that the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the flow chart of one embodiment of air-conditioner set control method proposed by the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
The present invention is described in further detail.
The present embodiment proposes a kind of air-conditioner set control method, and air-conditioner set includes multiple handpiece Water Chilling Units, each cold water
Unit mainly includes compressor, condenser, the evaporator being sequentially connected, and the water inlet of each evaporator connects with water inlet pipe respectively
Connect, the delivery port of each evaporator is connected with outlet pipe respectively；The water inlet of i.e. all evaporators is in parallel, all evaporators
Delivery port it is in parallel.Water reaches user terminal, then through water inlet after the outflow of evaporator delivery port through outlet pipe and one section of pipeline
Pipe, the water inlet of evaporator flow back to evaporator.
In this example, it is assumed that air-conditioner set includes 16 handpiece Water Chilling Units, each handpiece Water Chilling Units include two it is in parallel
Compressor, i.e. air-conditioner set include 32 compressors altogether.
The water chilling unit control method of the present embodiment specifically includes following step, shown in Figure 1.
Step S1：Obtain leaving water temperature Tewo and sets target temperature Td。
The leaving water temperature Tewo is the water temperature in outlet pipe.
Step S2：Calculating difference △ T=Tewo-Td。
Step S3：Judge △ T whether in setting difference range.
In the present embodiment, set difference range as more than or equal to -2 DEG C and less than or equal to 2 DEG C, that is, judge △ T whether
In [- 2 DEG C, 2 DEG C].
If so, then leaving water temperature meets user's request, all compressors are controlled to keep original state.
If it is not, then performing step S4.
Step S4：Judge water temperature rate of change whether in the range of setting rate of change.
Water temperature rate of change is the outlet pipe within the unit interval or the change of the water temperature in water inlet pipe（It is an absolute value, all the time
More than or equal to 0）.In the present embodiment, water temperature rate of change is from the water temperature change in outlet pipe in the unit interval.
In the present embodiment, rate of change scope is set less than 0.5 DEG C/30s, that is, to judge the water temperature rate of change in outlet pipe
Whether 0.5 DEG C/30s is less than.
If so, then fluctuating temperature is smaller, user's requirement is met, controls all compressors to keep original state.
If it is not, then performing step S5.
Step S5：Judge that the frequency is started shooting/shut down to compressor whether in the range of setting start/shutdown frequency.
In the present embodiment, compressor start shooting/shut down the frequency refer to current time previous hour inner compressor start/
The number of times of shutdown.
Start/shutdown frequency scope is set, is determined according to total number of units of compressor.The total number of units of compressor is different, and setting is opened
Machine/shutdown frequency scope is different, is designed according to actual conditions.In the present embodiment, set start/shutdown frequency scope as
Less than m times/h, m is total number of units/3.2 of compressor.When the total number of units of compressor is 32, m is 10, that is, judges that compressor is started shooting/stopped
Whether the machine frequency is less than 10 times/h.
If so, then the frequency is started shooting/shut down to compressor appropriately, infrequently, all compressors are controlled to keep original state.
If it is not, then performing step S6.
Step S6：Started shooting according to △ T, water temperature rate of change, compressor/shut down the frequency and determine that compressor is increased/subtract stop interval
Time, stop after interval time arrives, controlling compressor start/shutdown of wherein one shutdown/open state increasing/subtracting.
Determine that compressor increases interval time according to △ T, water temperature rate of change, the compressor start frequency, increase interval time
After arriving, master control borad sends a power-on command, the compressor start of wherein one stopped status of control.Due in stopped status
Compressor may have many, in the present embodiment, increase after interval time arrives, total fortune of the master control borad control in stopped status
Row time most short that compressor starts, with the total run time of compressor in balanced unit, it is to avoid respective compressive machine is always transported
Row overlong time causes the lost of life, extends the service life of whole unit.
Determine that compressor subtracts according to △ T, water temperature rate of change, the compressor shutdown frequency and stop interval time, subtract and stop interval time
After arriving, master control borad sends a halt command, controls the compressor shutdown of wherein one open state.Due in open state
Compressor may have many, in the present embodiment, subtract and stop after interval time arrives, total fortune of the master control borad control in open state
Row time most long that compressor is shut down, with the total run time of compressor in balanced unit, it is to avoid respective compressive machine is always transported
Row overlong time causes the lost of life, extends the service life of whole unit.
Compressor total run time refer to compressor dispatch from the factory after total run time.
The air-conditioner set control method of the present embodiment, obtains leaving water temperature Tewo and sets target temperature Td；Calculating difference
△T=Tewo-Td；Judge △ T whether in setting difference range；If it is not, then judging water temperature rate of change whether in setting rate of change
In the range of；If it is not, then judging that the frequency is started shooting/shut down to compressor whether in the range of setting start/shutdown frequency；If it is not, then root
Started shooting according to △ T, water temperature rate of change, compressor/shut down the frequency and determine that compressor is increased/subtract and stop interval time, between increasing/subtracting and stop
After the time arrives, compressor start/shutdown of wherein one shutdown/open state is controlled；Difference △ T, water temperature are considered
Rate of change, compressor are started shooting/shut down the frequency, the start and stop of compressor in control unit, so as to avoid high frequent start and stop, are reduced
Fluctuating temperature, meets the water demand of user, improves user experience.
Therefore, the air-conditioner set control method of the present embodiment, it is to avoid because compressor is opened caused by the too fast feedback of water temperature
It is dynamic frequent, and then compressor service life is improved, slow down fluctuating temperature, meet the requirement of user's comfortableness.
First, in the present embodiment, when determining that compressor increases interval according to △ T, water temperature rate of change, the compressor start frequency
Between, specifically include following step：
（1）In △ T >=first setting difference, because difference △ T are very big, then all compressors are controlled to start shooting, to increase system
Cold, reduces leaving water temperature Tewo as early as possible, reduces △ T, to reach customer satisfaction system temperature.
In the present embodiment, first difference is set as 5 DEG C.I.e. △ T >=5 DEG C when, open all compressors.
（2）When second sets difference≤setting differences of △ T ＜ first：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting start frequency
≤ compressor start frequency ＜ second sets the start frequency.
If so, then compressor increase interval time is that interval time is increased in the first setting；
If it is not, then all compressors keep original state.
Because △ T are larger, according to water temperature rate of change and the compressor start frequency, or all compressors are controlled to keep original
State；Or determine that compressor increases interval time and increases interval time for the first setting, and when the first setting is increased and is spaced
Between arrive after, the compressor start of wherein one stopped status of control；Both high frequent start and stop had been avoided, have caused leaving water temperature Tewo
Sets target temperature is reached as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, first difference is set as 5 DEG C, second sets difference as 4 DEG C.First sets rate of change as 0.5
DEG C/30s, second set rate of change as 1 DEG C/30s, first set start the frequency as 10 times/h, second set start shooting the frequency as 15
Secondary/h, first set increase interval time as 200s.
That is, in 5 DEG C of 4 DEG C≤△ T ＜, judge whether to meet 0.5 DEG C/30s≤1 DEG C/30s of water temperature rate of change ＜ and 10
Secondary/h≤15 times/h of compressor start frequency ＜；If so, then compressor increases interval time for 200s；If it is not, then all compressions
Machine keeps original state；Both high frequent start and stop had been avoided, so that leaving water temperature Tewo reaches sets target temperature as early as possible, kept away again
Exempt from fluctuating temperature excessive.
（3）When the 3rd sets difference≤setting differences of △ T ＜ second：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting start frequency
≤ compressor start frequency ＜ the 3rd sets the start frequency；
If so, then compressor increase interval time is that interval time is increased in the second setting；
If it is not, then all compressors keep original state.
Because △ T are smaller, according to water temperature rate of change and the compressor start frequency, or all compressors are controlled to keep original
State；Or determine that compressor increases interval time and increases interval time for the second setting, and when the second setting is increased and is spaced
Between arrive after, the compressor start of wherein one stopped status of control；Both high frequent start and stop had been avoided, have caused leaving water temperature Tewo
Sets target temperature is reached as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, the 3rd set difference as 3 DEG C, second set difference as 4 DEG C, second set rate of change as 1 DEG C/
30s, the 3rd set rate of change as 1.5 DEG C/30s, second set start the frequency as 15 times/h, the 3rd set start shooting the frequency as 20
Secondary/h, second set increase interval time as 210s.
That is, in 4 DEG C of 3 DEG C≤△ T ＜, judge whether to meet 1 DEG C/30s≤1.5 DEG C/30s of water temperature rate of change ＜ and 15
Secondary/h≤20 times/h of compressor start frequency ＜；If so, then compressor increases interval time for 210s；If it is not, then all compressions
Machine keeps original state；Both high frequent start and stop had been avoided, so that leaving water temperature Tewo reaches sets target temperature as early as possible, kept away again
Exempt from fluctuating temperature excessive.
（4）When the 4th setting difference ＜ △ T ＜ the 3rd set difference：
Judge whether to meet the setting start frequency of the setting rate of change of water temperature rate of change >=3rd and the compressor start frequency >=3rd
It is secondary；
If so, then compressor increase interval time is that interval time is increased in the 3rd setting；
If it is not, then all compressors keep original state.
Wherein, first setting increase interval time ＜ second setting increase interval time ＜ the 3rd setting increase interval when
Between；4th setting difference ＞ 0.
Because △ T are smaller, according to water temperature rate of change and the compressor start frequency, or all compressors are controlled to keep former
It is stateful；Or determine that compressor increase interval time is that interval time is increased in the 3rd setting, and at the 3rd setting increase interval
After time arrives, the compressor start of wherein one stopped status of control；Both high frequent start and stop had been avoided, have caused leaving water temperature
Tewo reaches sets target temperature as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, the 4th set difference and set difference as 3 DEG C, the 3rd as 2 DEG C, the 3rd and set rate of change as 1.5
DEG C/30s, the 3rd set start the frequency be 20 times/h, the 3rd set increase interval time as 250s.
That is, in 3 DEG C of 2 DEG C≤△ T ＜, judge whether to meet water temperature rate of change >=1.5 DEG C/30s and compressor start frequency
Secondary >=20 times/h；If so, then compressor increases interval time for 250s；If it is not, then all compressors keep original state；Both kept away
Exempt from high frequent start and stop, so that leaving water temperature Tewo reaches sets target temperature as early as possible, avoid fluctuating temperature excessive again.
In the present embodiment, according to △ T, water temperature rate of change, the compressor start frequency, or all compressors are controlled to keep
Original state；Or determine that compressor is increased interval time and increased for the first setting increase interval time, the second setting when being spaced
Between or the 3rd setting increase interval time, and after interval time arrives, the compressor start of wherein one stopped status of control；
High frequent start and stop are both avoided so as to realize, so that leaving water temperature Tewo reaches sets target temperature as early as possible, and water temperature is avoided again
Fluctuation is excessive.
2nd, in the present embodiment, according to △ T, water temperature rate of change, the compressor shutdown frequency determine compressor subtract stop interval when
Between, specifically include following step：
（1）When △ T ＜ the 5th set difference, because leaving water temperature Tewo is than sets target temperature TdIt is much lower, then control institute
There is compressor shutdown, it is to avoid waste energy.
In the present embodiment, the 5th difference is set as -5 DEG C.That is during ＜ -5 DEG C of △ T, then all compressor shutdowns are controlled.
（2）When the 5th sets difference≤setting differences of △ T ＜ the 6th：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ second；
If so, then compressor subtracts and stops interval time and subtract for the first setting and stop interval time；
If it is not, then all compressors keep original state.
Because △ T absolute value is larger, according to water temperature rate of change and the compressor shutdown frequency, or all compressors are controlled
Keep original state；Or determine that compressor subtracts and stop interval time and subtract and stop interval time for the first setting, and subtract in the first setting
Stop after interval time arrives, controlling the compressor shutdown of wherein one open state；Both high frequent start and stop had been avoided, have caused water outlet
Temperature Tewo reaches sets target temperature as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, the 5th set difference as -5 DEG C, the 6th set difference as -4 DEG C, first set rate of change as
0.5 DEG C/30s, second set rate of change as 1 DEG C/30s, first set shutdown the frequency as 10 times/h, second set shut down the frequency as
15 times/h, first set to subtract and stop interval time as 200s.
That is, in ＜ -4 DEG C of -5 DEG C≤△ T, judge whether to meet 0.5 DEG C/30s≤1 DEG C/30s of water temperature rate of change ＜ and
10 times/h≤compressor shutdown frequency ＜, 15 times/h；If so, then compressor subtracts and stops interval time for 200s；If it is not, then all pressures
Contracting machine keeps original state；Both high frequent start and stop had been avoided, so that leaving water temperature Tewo reaches sets target temperature as early as possible, again
Avoid fluctuating temperature excessive.
（3）When the 6th sets difference≤setting differences of △ T ＜ the 7th：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ the 3rd；
If so, then compressor subtracts and stops interval time and subtract for the second setting and stop interval time；
If it is not, then all compressors keep original state.
Because △ T absolute value is smaller, according to water temperature rate of change and the compressor shutdown frequency, or all compressors are controlled
Keep original state；Or determine that compressor subtracts and stop interval time and subtract and stop interval time for the second setting, and subtract in the second setting
Stop after interval time arrives, controlling the compressor shutdown of wherein one open state；Both high frequent start and stop had been avoided, have caused water outlet
Temperature Tewo reaches sets target temperature as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, the 6th set difference and set difference as -3 DEG C, second as -4 DEG C, the 7th and set rate of change as 1
DEG C/30s, the 3rd set rate of change as 1.5 DEG C/30s, second set shutdown the frequency as 15 times/h, the 3rd set shut down the frequency as
20 times/h, second set to subtract and stop interval time as 210s.
That is, in ＜ -3 DEG C of -4 DEG C≤△ T, judge whether to meet 1 DEG C/30s≤1.5 DEG C/30s of water temperature rate of change ＜ and
15 times/h≤compressor shutdown frequency ＜, 20 times/h；If so, then compressor subtracts and stops interval time for 210s；If it is not, then all pressures
Contracting machine keeps original state；Both high frequent start and stop had been avoided, so that leaving water temperature Tewo reaches sets target temperature as early as possible, again
Avoid fluctuating temperature excessive.
（4）When the 7th sets difference≤setting differences of △ T ＜ the 8th：
Judge whether to meet the setting of the setting rate of change of water temperature rate of change >=3rd and the compressor shutdown frequency >=3rd and shut down frequency
It is secondary；
If so, then compressor subtracts and stops interval time and subtract for the 3rd setting and stop interval time；
If it is not, then all compressors keep original state.
Wherein, the 8th setting difference ＜ 0.
Because △ T absolute value is smaller, according to water temperature rate of change and the compressor shutdown frequency, or all compressions are controlled
Machine keeps original state；Or determine that compressor subtracts and stop interval time and subtract for the 3rd setting and stop interval time, and in the 3rd setting
Subtract and stop after interval time arrives, controlling the compressor shutdown of wherein one open state；Both high frequent start and stop had been avoided, have made to draw
Coolant-temperature gage Tewo reaches sets target temperature as early as possible, avoids fluctuating temperature excessive again.
In the present embodiment, the 7th set difference as -3 DEG C, the 8th set difference as -2 DEG C, the 3rd set rate of change as
1.5 DEG C/30s, the 3rd set the shutdown frequency and set to subtract as 20 times/h, the 3rd and stop interval time as 250s.
That is, in ＜ -2 DEG C of -3 DEG C≤△ T, judge whether to meet water temperature rate of change >=1.5 DEG C/30s and compressor shutdown
The frequency >=20 time/h；If so, then compressor subtracts and stops interval time for 250s；If it is not, then all compressors keep original state；Both
Avoid high frequent start and stop, so that leaving water temperature Tewo reaches sets target temperature as early as possible, avoid fluctuating temperature excessive again.
In the present embodiment, according to △ T, water temperature rate of change, the compressor shutdown frequency, or all compressors are controlled to keep
Original state；Or determine compressor subtract stop interval time for first setting subtract stop interval time, second setting subtract stop interval when
Between or the 3rd setting subtract and stop interval time, and after interval time arrives, control the compressor shutdown of wherein one open state；
High frequent start and stop are both avoided so as to realize, so that leaving water temperature Tewo reaches sets target temperature as early as possible, and water temperature is avoided again
Fluctuation is excessive.
Due in air-conditioner set running, with various interference, it may result in compressor and increase/subtract and stop
Interval time has error, and then causes the phenomenon that there is maloperation to the start-up and shut-down control of compressor, in order to eliminate this error,
Avoid to compressor toning, it is to avoid the generation of maloperation, being started shooting according to △ T, water temperature rate of change, compressor/to shut down the frequency true
Determine after compressor increases/subtract and stop interval time, in addition it is also necessary to according to circumstances compressor is increased/subtracted and stops interval time and repaiies
Just.It is specific as follows：
First, after determining that compressor increases interval time according to △ T, water temperature rate of change, the compressor start frequency, the control
Method also comprises the steps, to eliminate the error that compressor increases interval time, it is to avoid to compressor toning.
If including the compressor increase interval time of this determination, interval time is increased with continuous n times compressor,
Then judge whether the variation tendency that the continuous n times compressor increases interval time is increasing or decreasing；
If so, then revised version second compression machine increases interval time, the average value that the continuous n times compressor is increased into interval time is made
Interval time is increased for this compressor；Wherein N >=3；
If it is not, it is vibration to illustrate that the continuous n times compressor increases the variation tendency of interval time, then all compressors keep original
State.
For example, it is assumed that N=3, continuous 3 second compression machine increases interval time for t1=250s, t2=210s, t3=200s, wherein
T3=200s increases interval time for the compressor of this determination, and the variation tendency due to 250s, 210s, 200s then will to successively decrease
The average of these three numerical value is increased interval time, i.e. t3 as the compressor of this determination and is modified to（250s+210s+
200s）/3=220s；After 220s, master control borad sends power-on command, the compressor start of wherein one stopped status of control.
In the present embodiment, if it is 250s, 250s, 200s, variation tendency that continuous 3 second compression machine, which increases interval time,
It is considered as and successively decreases.
If it is 250s, 200s, 210s that continuous 3 second compression machine, which increases interval time, variation tendency is vibration, and control is all
Compressor keeps original state.
2nd, it is described after determining that compressor subtracts and stops interval time according to △ T, water temperature rate of change, the compressor shutdown frequency
Control method also comprises the steps, is subtracted with to eliminate compressor and stops the error of interval time, it is to avoid to compressor toning.
If including the compressor of this determination subtracts and stops interval time, subtracting with continuous n times compressor and stopping interval time,
Then judge that the continuous n times compressor subtracts and stop whether the variation tendency of interval time is increasing or decreasing；
If so, then revised version second compression machine subtracts and stops interval time, the continuous n times compressor is subtracted and stops the average value of interval time and makees
Subtract for this compressor and stop interval time；Wherein N >=3；
If it is not, illustrating that the continuous n times compressor subtracts stops the variation tendency of interval time to vibrate, then all compressors keep original
State.
For example, it is assumed that N=3, continuous 3 second compression machine, which subtracts, stops interval time for t1=200s, t2=210s, t3=250s, wherein
T3=250s subtracts for the compressor of this determination and stops interval time, because 200s, 210s, 250s variation tendency are incremental, then will
The average of these three numerical value subtracts as the compressor of this determination and stopped interval time, i.e., t3 is modified to（200s+210s+
250s）/3=220s；After 220s, master control borad sends halt command, controls the compressor shutdown of wherein one open state.
In the present embodiment, if continuous 3 second compression machine, which subtracts, stops interval time for 200s, 200s, 250s, variation tendency
It is considered as and is incremented by.
If continuous 3 second compression machine, which subtracts, stops interval time for 200s, 250s, 210s, variation tendency is vibration, and control is all
Compressor keeps original state.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Apply example the present invention is described in detail, for the person of ordinary skill of the art, can still implement to foregoing
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of claimed technical solution of the invention.
Claims (10)
1. a kind of air-conditioner set control method, it is characterised in that：The air-conditioner set includes multiple handpiece Water Chilling Units, each described
Handpiece Water Chilling Units include the compressor, condenser, the evaporator that are sequentially connected, the water inlet of each described evaporator respectively with water inlet
Pipe is connected, and the delivery port of each described evaporator is connected with outlet pipe respectively；
The control method includes：
Obtain leaving water temperature Tewo and sets target temperature Td；
Calculating difference △ T=Tewo-Td；
Judge △ T whether in setting difference range；
If it is not, then judging water temperature rate of change whether in the range of setting rate of change；
If it is not, then judging that the frequency is started shooting/shut down to compressor whether in the range of setting start/shutdown frequency；
/ shut down the frequency if it is not, then being started shooting according to △ T, water temperature rate of change, compressor and determine that compressor is increased/and subtract and stop interval time,
Stop after interval time arrives, controlling compressor start/shutdown of wherein one shutdown/open state increasing/subtracting.
2. control method according to claim 1, it is characterised in that：According to △ T, water temperature rate of change, compressor start frequency
Secondary determination compressor increases interval time, specifically includes：
（1）In △ T >=first setting difference, then all compressors are controlled to start shooting；
（2）When second sets difference≤setting differences of △ T ＜ first：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting start frequency
≤ compressor start frequency ＜ second sets the start frequency；
If so, then compressor increase interval time is that interval time is increased in the first setting；
（3）When the 3rd sets difference≤setting differences of △ T ＜ second：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting start frequency
≤ compressor start frequency ＜ the 3rd sets the start frequency；
If so, then compressor increase interval time is that interval time is increased in the second setting；
（4）When the 4th setting difference ＜ △ T ＜ the 3rd set difference：
Judge whether to meet the setting start frequency of the setting rate of change of water temperature rate of change >=3rd and the compressor start frequency >=3rd
It is secondary；
If so, then compressor increase interval time is that interval time is increased in the 3rd setting；
Wherein, the first setting increases the setting increase setting of interval time ＜ the 3rd of interval time ＜ second and increases interval time；The
Four setting difference ＞ 0.
3. control method according to claim 1, it is characterised in that：According to △ T, water temperature rate of change, compressor shutdown frequency
Secondary determination compressor, which subtracts, stops interval time, specifically includes：
（1）When △ T ＜ the 5th set difference, then all compressor shutdowns are controlled；
（2）When the 5th sets difference≤setting differences of △ T ＜ the 6th：
Judge whether that meeting first sets rate of change≤setting rates of change of water temperature rate of change ＜ second and the first setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ second；
If so, then compressor subtracts and stops interval time and subtract for the first setting and stop interval time；
（3）When the 6th sets difference≤setting differences of △ T ＜ the 7th：
Judge whether that meeting second sets rate of change≤setting rates of change of water temperature rate of change ＜ the 3rd and the second setting shutdown frequency
The frequency is shut down in the settings of≤compressor shutdown frequency ＜ the 3rd；
If so, then compressor subtracts and stops interval time and subtract for the second setting and stop interval time；
（4）When the 7th sets difference≤setting differences of △ T ＜ the 8th：
Judge whether to meet the setting of the setting rate of change of water temperature rate of change >=3rd and the compressor shutdown frequency >=3rd and shut down frequency
It is secondary；
If so, then compressor subtracts and stops interval time and subtract for the 3rd setting and stop interval time；
Wherein, the first setting increases the setting increase setting of interval time ＜ the 3rd of interval time ＜ second and increases interval time；The
Eight setting difference ＜ 0.
4. control method according to claim 1, it is characterised in that：According to △ T, water temperature rate of change, compressor start frequency
Secondary determination compressor was increased after interval time, and the control method also includes：
If including the compressor increase interval time of this determination, increasing interval time with continuous n times compressor, then sentencing
Whether the variation tendency that the disconnected continuous n times compressor increases interval time is increasing or decreasing；
If so, the continuous n times compressor then to be increased to the average value of interval time as this compressor increase interval time；
Wherein, N >=3.
5. control method according to claim 1, it is characterised in that：According to △ T, water temperature rate of change, compressor shutdown frequency
Secondary determination compressor subtracts stop interval time after, the control method also includes：
If including the compressor of this determination subtracts and stops interval time, subtracting with continuous n times compressor and stopping interval time, then sentence
The disconnected continuous n times compressor, which subtracts, stops whether the variation tendency of interval time is increasing or decreasing；
Subtract as this compressor if so, then subtracting the continuous n times compressor and stopping the average value of interval time and stop interval time；
Wherein, N >=3.
6. control method according to claim 1, it is characterised in that：Described wherein one shutdown/open state of control
Compressor start/shutdown, is specifically included：
Increase after interval time arrives, the most short compressor start of total run time of the control in stopped status；
Subtract and stop after interval time arrives, total run time of the control in an open state most long compressor is shut down.
7. control method according to claim 1, it is characterised in that：The leaving water temperature Tewo is the water in outlet pipe
Temperature, the water temperature rate of change is the water temperature rate of change in outlet pipe or water inlet pipe.
8. control method according to claim 1, it is characterised in that：It is described set difference range as more than or equal to -2 DEG C and
Less than or equal to 2 DEG C, the rate of change scope that sets is less than 0.5 DEG C/30s.
9. control method according to claim 2, it is characterised in that：First sets difference as 5 DEG C, second set difference as
4 DEG C, the 3rd sets difference as 3 DEG C, and the 4th sets difference as 2 DEG C；First sets rate of change as 0.5 DEG C/30s, and the second setting becomes
Rate is 1 DEG C/30s, and the 3rd sets rate of change as 1.5 DEG C/30s.
10. control method according to claim 3, it is characterised in that：5th sets difference as -5 DEG C, the 6th setting difference
For -4 DEG C, the 7th sets difference as -3 DEG C, and the 8th sets difference as -2 DEG C；First sets rate of change as 0.5 DEG C/30s, and second sets
Rate of change is determined for 1 DEG C/30s, and the 3rd sets rate of change as 1.5 DEG C/30s.
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| CN107576106A (en) * | 2017-08-17 | 2018-01-12 | 广东美的暖通设备有限公司 | Water chiller-heater unit and its startup control method and device |
| CN108507125A (en) * | 2018-01-23 | 2018-09-07 | 青岛海尔空调电子有限公司 | A kind of air-conditioner set composite mode control method |
| CN108759212A (en) * | 2018-06-15 | 2018-11-06 | 重庆美的通用制冷设备有限公司 | Halt control method, system and the handpiece Water Chilling Units of handpiece Water Chilling Units |
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| CN108507125A (en) * | 2018-01-23 | 2018-09-07 | 青岛海尔空调电子有限公司 | A kind of air-conditioner set composite mode control method |
| CN108759212A (en) * | 2018-06-15 | 2018-11-06 | 重庆美的通用制冷设备有限公司 | Halt control method, system and the handpiece Water Chilling Units of handpiece Water Chilling Units |
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| CN109186018A (en) * | 2018-08-23 | 2019-01-11 | 重庆美的通用制冷设备有限公司 | Water cooler and the method, apparatus for controlling water cooler |
| CN110986254A (en) * | 2019-11-25 | 2020-04-10 | 珠海格力电器股份有限公司 | Water multi-connected air conditioner control method, computer readable storage medium and air conditioner |
| CN113531691A (en) * | 2020-03-30 | 2021-10-22 | 青岛海尔空调电子有限公司 | Control method of circulating water heater and circulating water heater |
| CN113531691B (en) * | 2020-03-30 | 2023-04-25 | 青岛海尔空调电子有限公司 | Control method of circulating water heater and circulating water heater |
| CN111426059A (en) * | 2020-04-29 | 2020-07-17 | 广东芬尼能源技术有限公司 | Control method and device of multi-unit parallel heat pump system |
| CN112303807A (en) * | 2020-10-27 | 2021-02-02 | 广东Tcl智能暖通设备有限公司 | Compressor loading control method, multi-split system and storage medium |
| CN112379648A (en) * | 2020-11-17 | 2021-02-19 | 青岛北冰洋冷暖能源科技有限公司 | Control method for judging whether unit is increased or decreased in cold station control system |
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Effective date of registration: 20201112 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |
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