CN103423837B - Free static pressure air-cooled ducted air conditioner - Google Patents
Free static pressure air-cooled ducted air conditioner Download PDFInfo
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- CN103423837B CN103423837B CN201310314658.5A CN201310314658A CN103423837B CN 103423837 B CN103423837 B CN 103423837B CN 201310314658 A CN201310314658 A CN 201310314658A CN 103423837 B CN103423837 B CN 103423837B
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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
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Abstract
The present invention relates to a kind of central air conditioner system, specifically, relate to a kind of air-cooled ducted air conditioner, technical scheme of the present invention adopts DC fan motor, can first run static pressure recognition mode before indoor set uses, start automatic operation by unit, by change rotating speed, the drag characteristic in air channel is identified, finds the rotating speed be applicable under this resistance.After identification completes, rotating speed recorded by autostop, later each run all can with this rotating speed for rotating speed of target, thus the air quantity ensureing unit is constant wind quantity, can fan-out capability in full amount, have employed after the recognition methods of this static pressure that the air quantity of product under different static pressure is under normal voltage after identifying, the discharge quantity of fan deviation of indoor set is all within ± 5%; Under improper voltage, the discharge quantity of fan deviation of indoor set is also within ± 10%.
Description
Technical field
The present invention relates to a kind of central air conditioner system, specifically, relate to a kind of air-cooled ducted air conditioner.
Background technology
Wind pipe type indoor set is when engineering site is installed, and installation environment is different, has the demand of different static pressure.Traditional air-cooled ducted air conditioner uses AC asynchronous motor, according to the design of engineering site airduct, must select the model that static pressure is suitable.Due to domestic project installation aspect not too specification, often occur that the air-cooled ducted air conditioner of high static pressure connects the situation of low static tube.At this moment there will be motor temperature rise too high, air quantity is excessive, and noise becomes large situation, affects comfortableness and the reliability of product.Further, the static pressure design of engineering site airduct is varied, and air-conditioning equipment producer needs the air-conditioning producing a variety of static pressure specification to meet, and causes the versatility of product very poor.In addition, in air-duct-type air-conditioner use procedure, it, needs to close air outlet to reach energy-conservation effect to multiple room (region) air-supply if certain room does not use for a long time by airduct.And close the static pressure that certain air outlet is just equivalent to add airduct, the static pressure due to traditional air-cooled ducted air conditioner is fixing, and now its air quantity inherently diminishes, and can affect the normal operation of unit.
Air-cooled ducted air conditioner in the market, has two classes:
One class adopts alternating current generator, its dispatch from the factory after rotating speed be fixing, generally there are four taps, different static pressure is adapted to by the mode changing tap, this mode can only adapt to 2 kinds of different static pressure, only have factory's outer air duct design static pressure identical with the specified static pressure of unit, the air-supply air quantity of air-cooled ducted air conditioner is only standard air quantity, otherwise will be bigger than normal or less than normal.Actual static pressure differs larger with design static pressure, and discharge quantity of fan deviation is larger.The consequence that indoor unit capability is not enough or noise is large will be caused like this, cause customer complaint.
Another kind of is adopt direct current generator, and adopt direct current chance higher than alternating current generator efficiency, but its rotating speed of target is solidificated in EEPROM, after dispatching from the factory, rotating speed is also changeless.Like this will be the same with exchanging air-cooled ducted air conditioner, strict to the designing requirement of air supply duct, can only be design according to the specified static pressure of this indoor set, once design static pressure and actual static pressure have difference, so will there is deviation in the discharge quantity of fan of indoor set, cause the consequence that indoor unit capability is not enough or noise is large equally, cause customer complaint.
Summary of the invention
Technical scheme of the present invention adopts DC fan motor, can first run static pressure recognition mode, started automatic operation by unit before indoor set uses, and by change rotating speed, is identified by the drag characteristic in air channel, finds the rotating speed be applicable under this resistance.After identification completes, rotating speed recorded by autostop, and later each run all can with this rotating speed for rotating speed of target, thus the air quantity ensureing unit is constant wind quantity, can fan-out capability in full amount.
The technical scheme of free static pressure air-cooled ducted air conditioner of the present invention is such: it comprises DC fan, DC fan motor, airduct, DC fan is arranged in airduct, DC fan motor is connected with DC fan, DC fan arranges control circuit, control circuit is connected with single-chip microcomputer, it is characterized in that, single-chip microcomputer and control circuit adjust the rotating speed of DC fan motor automatically according to the static pressure of airduct, and its control method is as follows:
A: permanent wind amount, maximum static pressure value, middle static pressure, the minimum static pressure of setting DC fan motor;
B: energising runs;
C: DC fan motor is with fixed rotating speed
rpmrun, after stable, measure the power of DC fan motor
p actual measurement , the computing formula according to rotating speed and power calculates this fixed rotating speed
rpmunder performance number, simultaneously according to the computing formula of rotating speed and power
p permanent wind amount =0.00041*rpm 2 + 1.7912* rpm-618, P minimum static pressure =0.0000028* rpm 3 -0.0014* rpm 2 + 0.61* rpm-50, P middle static pressure =0.0000061* rpm 3 -0.0059* rpm 2 -0.04* rpm+1020, P maximum static pressure =0.0000203* rpm 3 -0.0484* rpm 2 + 39.24* rpm-10595calculate this rotating speed
rpmlower constant wind quantity
p minimum static pressure, p middle static pressure, p maximum static pressure , compare
p actual measurement with
p middle static pressure if,
p actual measurement be less than
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step G; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step F; If
p actual measurement be more than or equal to
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step H; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step I;
D: will
p actual measurement with
p minimum static pressure * 85% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
E: will
p actual measurement with
p minimum static pressure * 115% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
F: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A; ,
G: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
H: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
I: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A.
Optimally, it also arranges fine tuning method, namely adjusts further rotating speed after the rotating speed of claim 1 again, and its control method comprises the following steps:
I: with the rotation speed operation of step G;
II: whether monitoring rotating speed is stablized, if stabilization of speed setting-up time T, then judge whether to meet following three condition a:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤2%; B:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤5% and fine tuning number of times>=3; C: fine tuning number of times>=5, if any one condition meeting a, b, c tri-conditions, stopping regulating, is the rotating speed of high wind shelves by this speed setting; If three conditions do not meet, just enter step III;
III: judge P
actual measurementwhether be greater than P
permanent wind amountif be greater than, calculate Dn=2*(P
actual measurement-P
permanent wind amount)/K, then reduces Dn by rotating speed, and fine tuning number of times adds 1, and then proceeds to step II; As P
actual measurementbe less than or equal to P
permanent wind amount, then rotating speed is increased Dn, then fine tuning number of times adds 1, and then proceeds to step II.
Optimally, setting value A's is be greater than 0 to be less than or equal to 20.
Optimally, setting value B is more than or equal to 4 and is less than or equal to 10.
Optimally, K value is the slope of permanent wind discharge curve.
Optimally, when satisfy condition ︱ actual speed-rotating speed of target ︱≤10 time, the length of setting T value is 1 minute.
Optimally, P
permanent wind amount , P minimum static pressure , P middle static pressure , P maximum static pressure corresponding rotating speed and rating formula are:
p
permanent wind amount
=0.00041*rpm
2
+ 1.7912*rpm-618;
p
minimum static pressure
=0.0000028* rpm
3
-0.0014* rpm
2
+ 0.61* rpm-50;
p
middle static pressure
=0.0000061* rpm
3
-0.0059* rpm
2
-0.04* rpm+1020;
p
maximum static pressure
=0.0000203* rpm
3
-0.0484* rpm
2
+ 39.24* rpm-10595.
Have employed after the recognition methods of this static pressure that the air quantity of product under different static pressure is under normal voltage after identifying, the discharge quantity of fan deviation of indoor set is all within ± 5%; Under improper voltage, the discharge quantity of fan deviation of indoor set is also within ± 10%.And without the indoor set of this function, when installation static pressure and design static pressure deviation are larger, the discharge quantity of fan deviation of indoor set is up to 50%.Indoor set can only corresponding 2 kinds of static pressure in the past, and such as the highest static pressure is the machine of 100Pa, only has 50Pa, 100Pa two kinds selection, can only design this two kinds of static pressure outside factory when mounting design air channel.But after employing the present invention, arbitrarily can design air channel from 0Pa to 100Pa, this reduces the difficulty of Duct design, because identifying is that indoor set automatically completes, also mitigate the workload of installation and maintenance outside factory.
Accompanying drawing explanation
Fig. 1 is the speed power curve figure of embodiments of the invention 1.
Detailed description of the invention
Embodiment 1:
The control method of the free static pressure blower fan of the present embodiment comprises coarse adjustment and fine tuning two flow processs, and its rate-determining steps is as follows: first carry out coarse adjustment:
A: permanent wind amount, maximum static pressure value, middle static pressure, the minimum static pressure of setting DC fan motor;
B: energising runs;
C: DC fan motor is with fixed rotating speed
rpmrun, after stable, measure the power of DC fan motor
p actual measurement , according to formula P
permanent wind amount=0.00041
*rpm
2+ 1.7912
*rpm-618 calculates this fixed rotating speed
rpmunder performance number, simultaneously according to formula
p minimum static pressure =0.0000028* rpm 3 -0.0014* rpm 2 + 0.61* rpm-50
p
middle static pressure
=0.0000061* rpm
3
-0.0059* rpm
2
-0.04* rpm+1020
p
maximum static pressure
=0.0000203* rpm
3
-0.0484* rpm
2
+ 39.24* rpm-10595
Calculate this rotating speed
rpmlower constant wind quantity
p minimum static pressure, p middle static pressure, p maximum static pressure , compare
p actual measurement with
p middle static pressure if,
p actual measurement be less than
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step G; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step F; If
p actual measurement be more than or equal to
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step H; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step I;
D: will
p actual measurement with
p minimum static pressure * 85% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
E: will
p actual measurement with
p minimum static pressure * 115% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
F: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
G: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
H: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
I: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum basis calculates again
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A.
And then carry out fine tuning:
I: with the rotation speed operation of coarse adjustment;
II: whether monitoring rotating speed is stablized, if stabilization of speed setting-up time T, then judge whether to meet following three condition a:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤2%; B:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤5% and fine tuning number of times>=3; C: fine tuning number of times>=5, if any one condition meeting a, b, c tri-conditions, stopping regulating, is the rotating speed of high wind shelves by this speed setting; If three conditions do not meet, just enter step III;
III: judge P
actual measurementwhether be greater than P
permanent wind amountif be greater than, calculate Dn=2*(P
actual measurement-P
permanent wind amount)/K, then reduces Dn by rotating speed, and fine tuning number of times adds 1, and then proceeds to step II; As P
actual measurementbe less than or equal to P
permanent wind amount, then rotating speed is increased Dn, then fine tuning number of times adds 1, and then proceeds to step II.K is the slope of permanent wind discharge curve.
As shown in the figure, the present embodiment is for 160 types:
fig. 1 is the curve map of the present embodiment:
1. permanent wind discharge curve: be ensureing that air quantity is that (160 types are 39m to fixed value
3/ h) basis on the relation curve of rotating speed and power.
2. Minimum Static is buckled line: be ensure static pressure be the minimum static pressure of fixed value (160 types are 0Pa) basis on the relation curve of rotating speed and power.
3. static pressure curve in the middle of: be ensure static pressure be static pressure (160 types are 60Pa) in the middle of fixed value basis on the relation curve of rotating speed and power.
4. maximum static pressure curve: be ensureing that static pressure be fixed value maximum static pressure 160 type is 100Pa) basis on the relation curve of rotating speed and power.
After above coarse adjustment, fine tuning 2 step, just can obtain the rotating speed of target (i.e. the successful rotating speed of fine tuning) adapting to current duct resistance characteristic, this rate-of-turn record in the EEPROM controlling substrate, after each indoor set powers on, CPU first can read this rotating speed of target from EEPROM, then operate with this rotating speed of target, thus after ensureing, each run can export constant air quantity.If indoor air channel there occurs change again, so an automatic static-pressure identification can be carried out again, the rotating speed before the rotating speed after identification can cover.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, the setting value A of the present embodiment is set as that 15, B value is set as 4, and the not additional fine tuning method of the present embodiment, only carry out the control method of claim 1.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is, the setting value A of the present embodiment is set as that 10, B value is set as 10.
Claims (5)
1. a free static pressure air-cooled ducted air conditioner, it comprises DC fan, DC fan motor, airduct, DC fan is arranged in airduct, DC fan motor is connected with DC fan, DC fan arranges control circuit, and control circuit is connected with single-chip microcomputer, it is characterized in that, single-chip microcomputer and control circuit adjust the rotating speed of DC fan motor automatically according to the static pressure of airduct, and its control method is as follows:
A: permanent wind amount, maximum static pressure value, middle static pressure, the minimum static pressure of setting DC fan motor;
B: energising runs;
C: DC fan motor is with fixed rotating speed
rpmrun, after stable, measure the power of DC fan motor
p actual measurement , the computing formula according to rotating speed and power calculates this fixed rotating speed
rpmunder performance number, simultaneously according to the computing formula of rotating speed and power
p permanent wind amount =0.00041*rpm 2 + 1.7912* rpm-618, P minimum static pressure =0.0000028* rpm 3 -0.0014* rpm 2 + 0.61* rpm-50, P middle static pressure =0.0000061* rpm 3 -0.0059* rpm 2 -0.04* rpm+1020, P maximum static pressure =0.0000203* rpm 3 -0.0484* rpm 2 + 39.24* rpm-10595calculate this rotating speed
rpmlower constant wind quantity
p minimum static pressure, p middle static pressure, p maximum static pressure , compare
p actual measurement with
p middle static pressure if,
p actual measurement be less than
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step G; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step F; If
p actual measurement be more than or equal to
p middle static pressure , then compare
p actual measurement and P
permanent wind amountif,
p actual measurement be less than P
permanent wind amountthen enter step H; If
p actual measurement be more than or equal to P
permanent wind amountthen enter step I;
D: will
p actual measurement with
p minimum static pressure * 85% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
E: will
p actual measurement with
p minimum static pressure * 115% compares, if be greater than, reporting to the police and exiting static pressure adjusts automatically, enters step F if be less than;
F: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual more maximum according to what calculate
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
G: calculate (
p actual measurement -P maximum static pressure ) account for (
p middle static pressure -P maximum static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual more maximum according to what calculate
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =(P virtual centre -P virtual maximum ) * DP_N
+ P virtual maximum , then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
H: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed increase setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual more maximum according to what calculate
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A;
I: calculate (
p actual measurement -P middle static pressure ) account for (
p minimum static pressure -P middle static pressure ) portion rate DP_N, under then calculating this rotating speed
p actual measurement and P
permanent wind amountdifference, the absolute value of difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is more than or equal to setting value A, by virtual for rotating speed reduction setting speed B, then calculate according to step C
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual more maximum according to what calculate
p virtual permanent wind amount , P virtual minimum , P virtual centre , P virtual maximum calculate
p virtual actual measurement ,
p virtual actual measurement =P virtual centre +(
p virtual minimum -P virtual centre ) * DP_N, then calculate
p virtual actual measurement with
p virtual permanent wind amount difference, difference and setting value A are compared, if difference is less than setting value A, then adjust end; If difference is not less than setting value A, then will
rotating speed increases setting speed B again, then computes repeatedly P virtual actual measurement , until difference is less than setting value A.
2. free static pressure air-cooled ducted air conditioner according to claim 1, is characterized in that, it also arranges fine tuning method, namely adjusts further rotating speed after the rotating speed of claim 1 again, and its control method comprises the following steps:
I: with the rotation speed operation of claim 1;
II: whether monitoring rotating speed is stablized, if stabilization of speed setting-up time T, then judge whether to meet following three condition a:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤2%; B:|(P
actual measurement-P
permanent wind amount)/P
permanent wind amount|≤5% and fine tuning number of times>=3; C: fine tuning number of times>=5, if any one condition meeting a, b, c tri-conditions, stopping regulating, is the rotating speed of high wind shelves by this speed setting; If three conditions do not meet, just enter step III;
III: judge P
actual measurementwhether be greater than P
permanent wind amountif be greater than, calculate Dn=2*(P
actual measurement-P
permanent wind amount)/K, then reduces Dn by rotating speed, and fine tuning number of times adds 1, and then proceeds to step II; As P
actual measurementbe less than or equal to P
permanent wind amount, then rotating speed is increased Dn, then fine tuning number of times adds 1, and then proceeds to step II, and K value is the slope of permanent wind discharge curve.
3. free static pressure air-cooled ducted air conditioner according to claim 1, is characterized in that, setting value A's is be greater than 0 to be less than or equal to 20.
4. free static pressure air-cooled ducted air conditioner according to claim 1, is characterized in that, setting value B is more than or equal to 4 and is less than or equal to 10.
5. free static pressure air-cooled ducted air conditioner according to claim 2, is characterized in that, when satisfy condition ︱ actual speed-rotating speed of target ︱≤10 time, the length of setting T value is 1 minute.
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| CN201310314658.5A CN103423837B (en) | 2013-07-25 | 2013-07-25 | Free static pressure air-cooled ducted air conditioner |
| PCT/CN2014/070400 WO2015010454A1 (en) | 2013-07-25 | 2014-01-09 | Free static pressure ducted air conditioning unit |
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| CN103423837B (en) * | 2013-07-25 | 2015-09-30 | 青岛海信日立空调系统有限公司 | Free static pressure air-cooled ducted air conditioner |
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| CN113531655A (en) * | 2020-04-14 | 2021-10-22 | 青岛海信日立空调系统有限公司 | Air duct machine |
| CN111928414A (en) * | 2020-07-28 | 2020-11-13 | 青岛海尔空调电子有限公司 | Air conditioner indoor unit rotating speed debugging method, rotating speed control method and air conditioner indoor unit |
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| WO2015010454A1 (en) | 2015-01-29 |
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