Rotating speed R1 (rpm)	1200	1200	1200	1200	1200	1200	1200	1200	1200	1200	1200	1200
													Static pressure (Pa)	0	10	20	30	40	50	60	70	80	90	100	110
Working current (A)	2.8	2.71	2.57	2.44	2.31	2.18	2.07	1.93	1.78	1.64	1.3	0.82

Table 1

According to the data shown in table 1, matching obtains the curve shown in Fig. 5.Suppose comparison electric current the L1 '=1.6A when storing in memory module, when air supply motor runs with preset rotation speed 1200rpm, the motor working current L1=2.35A detected, the relatively known L1 >=L1 ' of size of L1 and L1 ', therefore working current-static pressure corresponding relation when can adopt the first preset rotation speed R1 is to calculate current static pressure.By the known current static pressure of table 1 between 30Pa ~ 40Pa, can select nearby principle, namely L1 is near 2.31A, thinks that current static pressure is 40PA, also can between 30Pa ~ 40Pa select linear method of interpolation, show that current static pressure is 36.92Pa.More accurate way is by data in above table, by data fitting, and working current-static pressure relation curve when obtaining preset rotation speed R1, preferred least square method carries out matching, such as, obtain following formula according to the data fitting shown in table 1:

y＝-77.031x+217.8；

Wherein, x is the working current of air supply motor, and y is static pressure.The working current of the air supply motor detected is substituted into above-mentioned formula, and can directly calculate current static pressure, computational accuracy is higher.

Embodiments of the invention are not limited to this, such as can according to arranging 5 ~ 100 static pressures divided equally or do not divide equally between the maximum static pressure of air pipe type air-conditioner and 0 static pressure, and obtaining 5 ~ 100 groups of electric currents-static pressure corresponding relation by above-mentioned experiment method, formation is similar to the parameter form of table 1 and then draws corresponding fitting formula.

Can find from table 1 and Fig. 5, when static pressure is between 0 ~ 90Pa, there is good Changing Pattern in data; When static pressure is at more than 100Pa, working current obviously changes with the Changing Pattern of static pressure; When static pressure has been difficult to accurately measure working current value after 110Pa, therefore need to improve the rotating speed of air supply motor, with job search electric current again with the Changing Pattern of static pressure, thus judged current static pressure.

Step 412 shown in Fig. 4 is specially central processing unit and sends instruction to air pipe type air-conditioner air supply motor, and with the second preset rotation speed R2 running preset in memory module, wherein R2 numerical value is greater than R1.

Step 414 is specially working current detection module and detects the current consumption working current L2 of air pipe type air-conditioner air supply motor.Testing electric current will carry out after air supply motor runs N minute with R2, and object guarantees that motor is stable, and the span of N is 1 minute ~ 10 minutes, and preferably, the value of N is 3 ~ 5 minutes.

Step 416 is specially and the air pipe type air-conditioner air supply motor working current L2 that detects is substituted into electric current-static pressure relation curve formula under the second preset rotation speed that in memory module, matching is good or form, obtains current actual static pressure.Such as, as R2=1450rpm, found through experiments static pressure and working current exists corresponding relation as shown in table 2:

Rotating speed R2 (rpm)	1450	1450	1450	1450	1450
						Static pressure (Pa)	100	110	120	130	140
Working current (A)	3.13	3.00	2.86	2.71	2.58

Table 2

Such as, when air supply motor runs with preset rotation speed 1450rpm, the motor working current detected is 2.9A, by the known current static pressure of table 2 between 110Pa ~ 120Pa, can select nearby principle, namely L2 is near 2.86A, thinks that current static pressure is 120Pa, also can between 110Pa ~ 120Pa select linear method of interpolation, show that current static pressure is 117.1Pa.More accurate way is according to the data in table 2, by data fitting, and electric current-static pressure relation curve when obtaining preset rotation speed R2, preferred least square method carries out matching, such as, obtain following formula according to the data fitting in table 2:

y＝-71.902x+325.4；

Wherein, x is air supply motor working current, and y is static pressure.Then the air supply motor working current detected is substituted into this formula and can directly calculate current static pressure, precision is higher.

Embodiments of the invention are not limited to this, such as can according to arranging 5 ~ 100 static pressures divided equally or do not divide equally between the maximum static pressure of air pipe type air-conditioner and 0 static pressure, and obtaining 5 ~ 100 groups of electric currents-static pressure corresponding relation by above-mentioned experiment method, formation is similar to the parameter form of table 2 and then draws corresponding fitting formula.

Step 418 shown in Fig. 4 to step 422 refers to that central processing unit calls the numerical value of maximum nominal static pressure D in memory module, the actual static pressure A simultaneously calculated in invocation step 410 or step 416, relatively the magnitude relationship of A and D, if A≤D, sends " OK " code to display device; If A>D, send " NG " code to display device." OK " coded representation airduct is installed static pressure do not exceed maximum nominal static pressure, installation qualification; " NG " represents that the static pressure that airduct is installed by institute has exceeded maximum nominal static pressure, installs defective, needs redesign airduct size or layout.It should be pointed out that " OK " or " NG " code is only used to represent the one mark judging whether the above results exceeds standard, the code of other any these results of expression is all within protection scope of the present invention.

Because the static pressure A calculated in step 410 or step 416 shows by display device, comparative result is shown, to the acceptance of work or designer's basis for estimation and result intuitively simultaneously.Display device is generally line control machine, the telepilot or receiving panel etc. of air pipe type air-conditioner.

Those skilled in the art, it is to be appreciated that the above embodiment of the present invention has set forth for 2 preset rotation speed the scheme detecting air conditioner installation specification, for more than 2 preset rotation speed, is equally applicable to the technical scheme of above-described embodiment.Namely when air supply motor runs with rotating speed R1, when the working current L1 of air supply motor is less than the comparison electric current L1 ' stored in memory module, the rotating speed of air supply motor is adjusted to R2, now, if the working current L2 of air supply motor is less than the comparison electric current L2 ' stored in memory module, then the rotating speed of air supply motor is adjusted to R3, and continue the working current L3 of air supply motor to compare with the electric current L3 ' that compares corresponding to rotating speed R3 stored in memory module, and repeat above-mentioned steps, until when air supply motor runs with rotating speed Rn, its working current Ln is more than or equal to when comparing electric current Ln ', Ln is substituted into the electric current-static pressure relation curve formula under the good rotating speed Rn of matching in memory module or form, obtain the actual static pressure A of air conditioner, and then the maximum nominal static pressure D actual static pressure A and memory module to be stored compares, to draw comparative result.

More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of scheme of detection air conditioner installation specification newly, the actual static pressure of air conditioner can be detected exactly, so can accurately judge air conditioner airduct is installed actual static pressure whether meet specification.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. detect a method for air conditioner installation specification, it is characterized in that, comprising:

When receiving the instruction of the airduct static pressure detecting air conditioner, the air supply motor controlling described air conditioner runs with preset rotation speed;

Detect the current working current of described air supply motor, and judge whether the current working current of described air supply motor is more than or equal to the predetermined current value corresponding with described preset rotation speed; If so, then determine according to described preset rotation speed and described current working current the actual static pressure that described air conditioner is current;

When judging that the current working current of described air supply motor is less than the predetermined current value corresponding with described preset rotation speed, progressively change the rotating speed of described air supply motor, until the current working current of described air supply motor is more than or equal to the predetermined current value corresponding with the current rotating speed of described air supply motor;

When the current working current of described air supply motor is more than or equal to the predetermined current value corresponding with the current rotating speed of described air supply motor, determine according to the current rotating speed of described air supply motor and current working current the actual static pressure that described air conditioner is current;

2. the method for detection air conditioner installation specification according to claim 1, is characterized in that, the maximum nominal static pressure of the actual static pressure current according to described air conditioner and described air conditioner, determines the step of described air conditioner whether installation specification, specifically comprises:

When the actual static pressure that described air conditioner is current is greater than the maximum nominal static pressure of described air conditioner, determine that described air conditioner is installed lack of standardization;

When the actual static pressure that described air conditioner is current is less than or equal to the maximum nominal static pressure of described air conditioner, determine described air conditioner installation specification.

3. the method for detection air conditioner installation specification according to claim 1, is characterized in that, also comprise: the multiple rotating speed of pre-stored, and the predetermined current value corresponding with each rotating speed;

Before controlling the step that the air supply motor of described air conditioner runs with preset rotation speed, also comprise: choose arbitrary rotating speed in described multiple rotating speed as described preset rotation speed;

4. the method for detection air conditioner installation specification according to claim 3, is characterized in that, also comprise:

When controlling described air supply motor and running with described preset rotation speed, if described air conditioner enters stoppage protection state, then choose be less than described arbitrary rotating speed in described multiple rotating speed other rotating speed as described preset rotation speed.

5. the method for detection air conditioner installation specification according to any one of claim 1 to 4, is characterized in that, also comprise:

6. detect a device for air conditioner installation specification, it is characterized in that, comprising:

First control module, for when receiving the instruction of the airduct static pressure detecting air conditioner, the air supply motor controlling described air conditioner runs with preset rotation speed;

Current detecting unit, for detecting the current working current of described air supply motor;

Judging unit, for judging whether the current working current of the described air supply motor that described current detecting unit detects is more than or equal to the predetermined current value corresponding with described preset rotation speed;

Second control module, for when described judging unit judges that the current working current of described air supply motor is less than the predetermined current value corresponding with described preset rotation speed, progressively change the rotating speed of described air supply motor, until described current detecting unit detects that the current working current of described air supply motor is more than or equal to the predetermined current value corresponding with the current rotating speed of described air supply motor;

7. the device of detection air conditioner installation specification according to claim 6, is characterized in that, described processing unit specifically for:

8. the device of detection air conditioner installation specification according to claim 6, is characterized in that, also comprise:

Storage unit, for the multiple rotating speed of pre-stored, and the predetermined current value corresponding with each rotating speed;

Described first control module also for: choose arbitrary rotating speed in described multiple rotating speed as described preset rotation speed;

Described second control module progressively changes the operation of the rotating speed of described air supply motor, specifically comprises: in described multiple rotating speed, choose corresponding rotating speed, to change the rotating speed of described air supply motor.

9. the device of detection air conditioner installation specification according to claim 8, is characterized in that, described first control module also for:

10. the device of the detection air conditioner installation specification according to any one of claim 6 to 9, is characterized in that, also comprise:

11. 1 kinds of air conditioners, is characterized in that, comprising: the device of the detection air conditioner installation specification according to any one of claim 6 to 10.