CN103982990A - Method for controlling draught fan in air conditioner outdoor unit and air conditioning system - Google Patents
Method for controlling draught fan in air conditioner outdoor unit and air conditioning system Download PDFInfo
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- CN103982990A CN103982990A CN201410245574.5A CN201410245574A CN103982990A CN 103982990 A CN103982990 A CN 103982990A CN 201410245574 A CN201410245574 A CN 201410245574A CN 103982990 A CN103982990 A CN 103982990A
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Abstract
The invention provides a method for controlling a draught fan in an air conditioner outdoor unit. The method comprises the steps of detecting outdoor environment temperature T and exhaust pipe pressure P1 of a compressor of an air conditioning system; controlling the draught fan to output first rotating speed V1 if the starting and operating time of the compressor is shorter than first preset time when T is higher than preset refrigeration upper limit temperature Tcold1 under a refrigeration mode, controlling the draught fan to output second rotating speed V2 if T is lower than refrigeration lower limit temperature Tcold2, and otherwise controlling the draught fan to output third rotating speed V3, wherein V3 is larger than V1 and less than V2; improving the rotating speed of the draught fan when the starting and operating time of the compressor is longer than the first preset time and if P1 is larger than preset upper limit high pressure Phigh1 for second preset time, and lowering the rotating speed of the draught fan if the P1 is smaller than preset lower limit high pressure Phigh2 for second preset time. Suitable rotating speeds of the draught fan are selected according to different Ts and P1s to improve the usability and the energy efficiency of the air conditioning system, and the energy saving effect is further improved. The invention further provides the air conditioning system.
Description
Technical field
The present invention relates to Air-condition system control technical field, more particularly, relate to the control method of blower fan in a kind of air-conditioner outdoor unit, the invention still further relates to a kind of air-conditioning system.
Background technology
Energy-conservation in order to realize, convertible frequency air-conditioner is widely used gradually.Convertible frequency air-conditioner is divided into indoor set and off-premises station, and convertible frequency air-conditioner is on the basis of common air-conditioning, to have selected frequency conversion dedicated compressor, has increased frequency-changing control system.In order to ensure the serviceability of convertible frequency air-conditioner, need outdoor fan to realize frequency conversion.At present, mainly according to the rotating speed of the blast pipe pressure of compressor and Air suction pipe pressure adjusting outdoor fan.
But the rotating speed of outdoor fan is not only relevant to blast pipe pressure and the Air suction pipe pressure of compressor, cause above-mentioned control method larger on the impact of air-conditioning system serviceability.
In addition, only, by the blast pipe pressure of compressor and the rotating speed of Air suction pipe pressure adjusting outdoor fan, there is the situation that efficiency is lower.
In sum, how providing the control method of blower fan in a kind of air-conditioner outdoor unit, to improve serviceability and the efficiency of air-conditioning system, and then improve energy-saving effect, is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide the control method of blower fan in a kind of air-conditioner outdoor unit, to improve serviceability and the efficiency of air-conditioning system, and then improve energy-saving effect.
Another object of the present invention is to provide a kind of air-conditioning system, to improve serviceability and the efficiency of air-conditioning system, and then improve energy-saving effect.
In order to achieve the above object, the invention provides following technical scheme:
A control method for blower fan in air-conditioner outdoor unit, comprising:
The compressor exhaust pipe pressure P 1 of sensing chamber's external environment temperature T and air-conditioning system;
Under the refrigeration mode of air-conditioning system, in the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control blower fan and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control described blower fan and export the second rotating speed V2, otherwise, control described blower fan output the 3rd rotating speed V3, wherein, V1 > V3 > V2;
When the unlatching of compressor is greater than after described the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues, after the second Preset Time, to improve the rotating speed of described blower fan, if P1 is less than default lower limit high pressure P
high2 continue, after described the second Preset Time, to reduce the rotating speed of described blower fan.
Preferably, above-mentioned control method also comprises:
Detect the Air suction pipe pressure P2 of described compressor;
Under the heating mode of air-conditioning system, in the time that the unlatching of compressor is less than described the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control described blower fan output the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control described blower fan output the 5th rotating speed V5, otherwise, control described blower fan output the 6th rotating speed V6, wherein, V5 > V6 > V4;
When the unlatching of compressor is greater than after described the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues, after described the second Preset Time, to improve the rotating speed of described blower fan, if P2 is greater than preset upper limit low pressure P
high2 continue, after described the second Preset Time, to reduce the rotating speed of described blower fan.
Preferably, in above-mentioned control method, described the first rotating speed V1 is identical with described the 5th rotating speed V5, and described the 3rd rotating speed V3 is identical with described the 6th rotating speed V6, and described the second rotating speed V2 is identical with described the 4th rotating speed V4.
Preferably, in above-mentioned control method, the rotating speed of described blower fan is divided into ten grades, comprises the first estate rotating speed v1, the second grade rotating speed v2, tertiary gradient rotating speed v3, fourth estate rotating speed v4, the 5th grade rotating speed v5, the 6th grade rotating speed v6, the 7th grade rotating speed v7, the 8th grade rotating speed v8, the 9th grade rotating speed v9, the tenth grade rotating speed v10 that increase progressively successively.
Preferably, in above-mentioned control method, described the first rotating speed V1 equals described the tenth grade rotating speed v10, and described the 3rd rotating speed V3 equals described the 7th grade rotating speed v7, and described the second rotating speed V2 equals described the 5th grade rotating speed v5; And described the tenth grade rotating speed v10 is 800rpm, described the 7th grade rotating speed v7 is 650rpm, and described the 5th grade rotating speed v5 is 500rpm.
Preferably, in above-mentioned control method, in the time need to improving the rotating speed of described blower fan, control described rotating speed and improve a grade, in the time need to reducing the rotating speed of described blower fan, control described rotating speed and put forward a grade of reduction.
Preferably, in above-mentioned control method, described the first Preset Time is 90 seconds-120 seconds, and described the second Preset Time is 50 seconds-70 seconds; T
cold1 is 30 DEG C, T
cold2 is 20 DEG C, T
heat1 is 25 DEG C, T
heat2 is 12 DEG C; P
high1 is 25bar, P
high2 is 20bar, P
low1 is 5bar, P
low2 is 10bar.
Can find out from above-mentioned technical scheme, in air-conditioner outdoor unit provided by the invention the control method of blower fan under the refrigeration mode of air-conditioning system, the compressor exhaust pipe pressure P 1 of sensing chamber's external environment temperature T and air-conditioning system; In the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control blower fan and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control blower fan and export the second rotating speed V2, otherwise, control blower fan output the 3rd rotating speed V3, wherein, V1 > V3 > V2; When the unlatching of compressor is greater than after the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues, after the second Preset Time, to improve the rotating speed of blower fan, if P1 is less than default lower limit high pressure P
high2 continue, after the second Preset Time, to reduce the rotating speed of blower fan.
Under the refrigeration mode of air-conditioning system, control method of the present invention was controlled the rotating speed of blower fan before compressor is opened operation the first Preset Time according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan according to the compressor exhaust pipe pressure P 1 of air-conditioning system, so the present invention can select suitable rotation speed of fan according to the compressor exhaust pipe pressure P 1 of different outdoor environment temperature T and air-conditioning system, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV (abbreviation of integrated part load value of system, comprehensive part load performance coefficient) can reach higher, more energy-conservation.
In summary, in air-conditioner outdoor unit provided by the invention, the control method of blower fan can improve serviceability and the efficiency of air-conditioning system, and then has improved energy-saving effect.
The present invention also provides a kind of air-conditioning system, comprises off-premises station, and this off-premises station comprises compressor, outdoor heat exchanger, blower fan and the drive plate for driving described blower fan to rotate; It is characterized in that, also comprise:
For detection of the environment temperature sensor of outdoor environment temperature T;
For detection of the high pressure sensor of the blast pipe pressure P 1 of described compressor, described high pressure sensor is arranged on described blast pipe;
The first controller being connected with described environment temperature sensor, described drive plate and described high pressure sensor respectively, described the first controller is under the refrigeration mode of air-conditioning system, in the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control described blower fan and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control described blower fan and export the second rotating speed V2, otherwise, control described blower fan output the 3rd rotating speed V3; When the unlatching of compressor is greater than after described the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues after the second Preset Time, and the rotating speed of controlling described blower fan improves, if P1 is less than default lower limit high pressure P
high2 continue after described the second Preset Time, and the rotating speed of controlling described blower fan reduces; Wherein, V1 > V3 > V2.
Preferably, in above-mentioned air-conditioning system, described off-premises station also comprises:
For detection of the low pressure sensor of the Air suction pipe pressure P2 of described compressor, described low pressure sensor is arranged on described air intake duct;
The second controller being connected with described environment temperature sensor, described drive plate and described low pressure sensor respectively, described second controller is under the heating mode of air-conditioning system, in the time that the unlatching of compressor is less than described the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control described blower fan output the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control described blower fan output the 5th rotating speed V5, otherwise, control described blower fan output the 6th rotating speed V6; When the unlatching of compressor is greater than after described the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues after described the second Preset Time, and the rotating speed of controlling described blower fan improves, if P2 is greater than preset upper limit low pressure P
high2 continue after described the second Preset Time, and the rotating speed of controlling described blower fan reduces; Wherein V5 > V6 > V4.
Preferably, in above-mentioned air-conditioning system, described drive plate has ten driving frequencies, the corresponding rotation speed of fan grade of each described driving frequency; Described environment temperature sensor is arranged on the fin of described outdoor heat exchanger air intake surface, and described blower fan is arranged on the outlet air surface of described outdoor heat exchanger.
The off-premises station of air-conditioning system provided by the invention comprises compressor, outdoor heat exchanger, blower fan, drive plate, environment temperature sensor, high pressure sensor and the first controller; Wherein, drive plate is used for driving blower fan rotation; Environment temperature sensor is for detection of outdoor environment temperature T; High pressure sensor is for detection of the blast pipe pressure P 1 of compressor, and this high pressure sensor is arranged on blast pipe; The first controller is connected with environment temperature sensor, drive plate and high pressure sensor respectively.
The present invention is under the refrigeration mode of air-conditioning system, by the compressor exhaust pipe pressure P 1 of environment temperature sensor and high pressure sensor difference sensing chamber's external environment temperature T and air-conditioning system; In the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, utilize the first controller control blower fan to export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, utilize the first controller control blower fan to export the second rotating speed V2, otherwise, utilize the first controller control blower fan output the 3rd rotating speed V3; When the unlatching of compressor is greater than after the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues after the second Preset Time, utilizes the rotating speed of the first controller control blower fan to improve, if P1 is less than default lower limit high pressure P
high2 continue after the second Preset Time, utilize the rotating speed of the first controller control blower fan to reduce.
Air-conditioning system of the present invention is under refrigeration mode, before opening operation the first Preset Time, compressor controls the rotating speed of blower fan according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan according to the compressor exhaust pipe pressure P 1 of air-conditioning system, so the present invention can select suitable rotation speed of fan according to the compressor exhaust pipe pressure P 1 of different outdoor environment temperature T and air-conditioning system, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV of system can reach higher, more energy-conservation.
In summary, air-conditioning system provided by the invention can improve serviceability and the efficiency of air-conditioning system, and then has improved energy-saving effect.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the air-conditioning system that provides of the embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention provides the control method of blower fan in a kind of air-conditioner outdoor unit, can improve serviceability and the efficiency of air-conditioning system, and then improve energy-saving effect.
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In the air-conditioner outdoor unit that the embodiment of the present invention provides, the control method of blower fan is under the refrigeration mode of air-conditioning system, the compressor exhaust pipe pressure P 1 of sensing chamber's external environment temperature T and air-conditioning system; In the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control blower fan and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control blower fan and export the second rotating speed V2, otherwise, control blower fan output the 3rd rotating speed V3, wherein, V1 > V3 > V2; When the unlatching of compressor is greater than after the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues, after the second Preset Time, to improve the rotating speed of blower fan, if P1 is less than default lower limit high pressure P
high2 continue, after the second Preset Time, to reduce the rotating speed of blower fan.
Under the refrigeration mode of air-conditioning system, control method of the present invention was controlled the rotating speed of blower fan before compressor is opened operation the first Preset Time according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan according to the compressor exhaust pipe pressure P 1 of air-conditioning system, so the present invention can select suitable rotation speed of fan according to the compressor exhaust pipe pressure P 1 of different outdoor environment temperature T and air-conditioning system, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV of system can reach higher, more energy-conservation.
In summary, in the air-conditioner outdoor unit that the embodiment of the present invention provides, the control method of blower fan can improve serviceability and the efficiency of air-conditioning system, and then has improved energy-saving effect.
In the present invention's one specific embodiment, above-mentioned control method also comprises:
Detect the Air suction pipe pressure P2 of compressor;
Under the heating mode of air-conditioning system, in the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control blower fan output the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control blower fan output the 5th rotating speed V5, otherwise, control blower fan output the 6th rotating speed V6, wherein, V5 > V6 > V4;
When the unlatching of compressor is greater than after the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues, after the second Preset Time, to improve the rotating speed of blower fan, if P2 is greater than preset upper limit low pressure P
high2 continue, after the second Preset Time, to reduce the rotating speed of blower fan.
Control method of the present invention is under the heating mode of air-conditioning system, before opening operation the first Preset Time, compressor controls the rotating speed of blower fan according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan according to the Air suction pipe pressure P2 of compressor, so the present invention can select suitable rotation speed of fan according to the compressor suction duct pressure P 2 of different outdoor environment temperature T and air-conditioning system, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV of system can reach higher, more energy-conservation.
In summary, in the air-conditioner outdoor unit that the embodiment of the present invention provides, the control method of blower fan can improve respectively serviceability and the efficiency of air-conditioning system under refrigeration mode and heating mode, has further improved energy-saving effect.
In above-mentioned control method, the first rotating speed V1 is identical with the 5th rotating speed V5, and the 3rd rotating speed V3 is identical with the 6th rotating speed V6, and the second rotating speed V2 is identical with the 4th rotating speed V4.So, open running time while being less than the first Preset Time at compressor, T > T under the refrigeration mode of air-conditioning system
coldthe first rotating speed V1 of blower fan output in 1 o'clock equals T < T under heating mode
heatthe 5th rotating speed V5 of blower fan output in 2 o'clock; T < T under refrigeration mode
coldthe second rotating speed V2 of blower fan output in 2 o'clock equals T > T under heating mode
heatthe 4th rotating speed V4 of blower fan output in 1 o'clock; T under refrigeration mode
cold2 < T < T
coldthe 3rd rotating speed V3 of blower fan output in 1 o'clock equals T under heating mode
heat2 < T < T
heatthe 6th rotating speed V6 of blower fan output in 1 o'clock; That is to say when outdoor environment temperature T is excessive under refrigeration mode that the output speed of blower fan is identical when outdoor environment temperature T is too small under heating mode, when under refrigeration mode, outdoor environment temperature T is too small, the output speed of blower fan is identical when under heating mode, outdoor environment temperature T is excessive, and under other environment temperatures T, the rotating speed of blower fan output is identical; Be convenient to the adjusting of fan delivery, improved serviceability and the efficiency of air-conditioning system.
It will be appreciated by persons skilled in the art that above-mentioned V1 also can be different from V5, V3 also can be different from V6, and V2 also can be different from V4; Only needing to meet V1 and V5 value is larger rotating speed, and V3 and V6 value are intermediate speed, and V2 and V4 value are less rotating speed.
Concrete, the present invention can be divided into ten grades by the rotating speed of blower fan according to the requirement of air-conditioning system, the corresponding grade of each rotating speed, comprises the first estate rotating speed v1, the second grade rotating speed v2, tertiary gradient rotating speed v3, fourth estate rotating speed v4, the 5th grade rotating speed v5, the 6th grade rotating speed v6, the 7th grade rotating speed v7, the 8th grade rotating speed v8, the 9th grade rotating speed v9, the tenth grade rotating speed v10 that increase progressively successively.In an embodiment, the tachometer value of every grade is as shown in the table:
The numerical value of above-mentioned each grade can also be changed according to actual air volume demand; Certainly, require the rotating speed of blower fan can also be divided into the grade of other numbers according to the difference of air-conditioning system, as eight grades or six grades etc., the present invention is not specifically limited this.
In preferred technical scheme, the first rotating speed V1 equals the tenth grade rotating speed v10, and the 3rd rotating speed V3 equals the 7th grade rotating speed v7, and the second rotating speed V2 equals the 5th grade rotating speed v5; Now, the equal value of V1 and V5 is maximum (top) speed 800rpm, and the equal value of V3 and V6 is larger intermediate speed 650rpm, and the equal value of V2 and V4 is less intermediate speed 500rpm.Interchangeable, V1 can also select v8 or v9, and V2 can also select v4 or v6, and V3 can also select v7 or v8 etc., should select suitable tachometer value according to practical service environment and instructions for use.
In order to improve the stability of air-conditioning system operation, in the control method of above-described embodiment, in the time need to improving the rotating speed of blower fan, control rotating speed and improve a grade, in the time need to reducing the rotating speed of blower fan, control rotating speed and put forward a grade of reduction.The present invention is under the refrigeration mode of air-conditioning system, when the unlatching of compressor is greater than after the first Preset Time running time, if P1 > is P
high1 continues the second Preset Time makes rotation speed of fan improve a grade, as rotation speed of fan starts, for v7, to rise to v8, if P1 is little < P
high2 continue the second Preset Time makes the rotating speed of blower fan reduce a grade, as rotation speed of fan starts, for v7, to be reduced to v6.The present invention makes the rotating speed of blower fan improve gradually or reduce, and the amplitude of variation of the rotating speed of blower fan is less, can ensure system stable operation, has improved the comfortableness in room.
In the present invention's one specific embodiment, the first Preset Time is 90 seconds-120 seconds, and the second Preset Time is 50 seconds-70 seconds; T
cold1 is 30 DEG C, T
cold2 is 20 DEG C, T
heat1 is 25 DEG C, T
heat2 is 12 DEG C; P
high1 is 25bar, P
high2 is 20bar, P
low1 is 5bar, P
low2 is 10bar.Concrete, the first Preset Time is 90 seconds, the second Preset Time is 60 seconds.The concrete control procedure of control method of the present invention is as follows:
In the time of the refrigeration mode of air-conditioning system:
Compressor is opened first 90 seconds of operation, when outdoor environment temperature T is greater than 30 DEG C, and rotation speed of fan output 800rpm; When outdoor environment temperature T is less than 20 DEG C, rotation speed of fan output 500rpm, otherwise rotation speed of fan output 650rpm;
Compressor was opened operation after 90 seconds, continued 60 seconds if compressor exhaust pipe pressure P 1 is greater than 25bar, and rotation speed of fan improves a grade; Continue 60 seconds if compressor exhaust pipe pressure P 1 is less than 20bar, rotation speed of fan reduces a grade.
In the time of the heating mode of air-conditioning system:
Compressor is opened first 90 seconds of operation, when outdoor environment temperature T is greater than 25 DEG C, and rotation speed of fan output 500rpm; When outdoor environment temperature T is less than 12 DEG C, rotation speed of fan output 800rpm, otherwise rotation speed of fan output 650rpm;
Compressor was opened operation after 90 seconds, continued 60 seconds if the Air suction pipe pressure P2 of compressor is less than 5bar, and rotation speed of fan improves a grade; Continue 60 seconds if the Air suction pipe pressure P2 of compressor is greater than 10bar, rotation speed of fan reduces a grade.
Please refer to accompanying drawing 1, the embodiment of the present invention also provides a kind of air-conditioning system, comprises off-premises station, and this off-premises station comprises compressor 5, outdoor heat exchanger 2, blower fan 1 and the drive plate for driving blower fan 1 to rotate; Also comprise:
For detection of the environment temperature sensor 3 of outdoor environment temperature T;
For detection of the high pressure sensor 4 of blast pipe 51 pressure P 1 of compressor 5, high pressure sensor 4 is arranged on blast pipe 51;
The first controller being connected with environment temperature sensor 3, drive plate and high pressure sensor 4 respectively, the first controller is under the refrigeration mode of air-conditioning system, in the time that the unlatching of compressor 5 is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control blower fan 1 and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control blower fan 1 and export the second rotating speed V2, otherwise, control blower fan 1 and export the 3rd rotating speed V3; When the unlatching of compressor 5 is greater than after the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues after the second Preset Time, and the rotating speed of controlling blower fan 1 improves, if P1 is less than default lower limit high pressure P
high2 continue after the second Preset Time, and the rotating speed of controlling blower fan 1 reduces; Wherein, V1 > V3 > V2.
The present invention is under the refrigeration mode of air-conditioning system, by compressor 5 blast pipe 51 pressure P 1 of environment temperature sensor 3 and high pressure sensor 4 difference sensing chamber's external environment temperature T and air-conditioning system; In the time that the unlatching of compressor 5 is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, utilize the first controller control blower fan 1 to export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, utilize the first controller control blower fan 1 to export the second rotating speed V2, otherwise, utilize the first controller control blower fan 1 to export the 3rd rotating speed V3; When the unlatching of compressor 5 is greater than after the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues after the second Preset Time, utilizes the rotating speed of the first controller control blower fan 1 to improve, if P1 is less than default lower limit high pressure P
high2 continue after the second Preset Time, utilize the rotating speed of the first controller control blower fan 1 to reduce.
Air-conditioning system of the present invention is under refrigeration mode, before opening operation the first Preset Time, compressor 5 controls the rotating speed of blower fan 1 according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan 1 according to compressor 5 blast pipe 51 pressure P 1 of air-conditioning system, so the present invention can select suitable blower fan 1 rotating speed according to the compressor of different outdoor environment temperature T and air-conditioning system 5 blast pipe 51 pressure P 1, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV of system can reach higher, more energy-conservation.
In summary, air-conditioning system provided by the invention can improve serviceability and the efficiency of air-conditioning system, and then has improved energy-saving effect.
Preferably, above-mentioned off-premises station also comprises low pressure sensor 6 and second controller, and low pressure sensor 6 is for detection of air intake duct 52 pressure P 2 of compressor 5, and it is arranged on air intake duct 52; Second controller is connected with environment temperature sensor 3, drive plate and low pressure sensor 6 respectively, and it is under the heating mode of air-conditioning system, in the time that the unlatching of compressor 5 is less than the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control blower fan 1 and export the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control blower fan 1 and export the 5th rotating speed V5, otherwise, control blower fan 1 and export the 6th rotating speed V6; When the unlatching of compressor 5 is greater than after the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues after the second Preset Time, and the rotating speed of controlling blower fan 1 improves, if P2 is greater than preset upper limit low pressure P
high2 continue after the second Preset Time, and the rotating speed of controlling blower fan 1 reduces; Wherein V5 > V6 > V4.
The present invention, under the heating mode of air-conditioning system, distinguishes air intake duct 52 pressure P 2 of the compressor 5 of sensing chamber's external environment temperature T and air-conditioning system by environment temperature sensor 3 and low pressure sensor 6; In the time that the unlatching of compressor 5 is less than the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, utilize second controller control blower fan 1 to export the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, utilize second controller control blower fan 1 to export the 5th rotating speed V5, otherwise, utilize second controller control blower fan 1 to export the 6th rotating speed V6; When the unlatching of compressor 5 is greater than after the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues after the second Preset Time, utilizes the rotating speed of second controller control blower fan 1 to improve, if P2 is greater than preset upper limit low pressure P
high2 continue after the second Preset Time, utilize the rotating speed of second controller control blower fan 1 to reduce.
Air-conditioning system of the present invention is under heating mode, before opening operation the first Preset Time, compressor 5 controls the rotating speed of blower fan 1 according to outdoor environment temperature T, open operation the first Preset Time and control afterwards the rotating speed of blower fan 1 according to air intake duct 52 pressure P 2 of compressor 5, so the present invention can select suitable blower fan 1 rotating speed according to the compressor of different outdoor environment temperature T and air-conditioning system 5 air intake duct 52 pressure P 2, thereby can accurately control the required air quantity of air-conditioning system, make efficiency and the IPLV of system can reach higher, more energy-conservation.
In summary, the present invention can improve respectively serviceability and the efficiency of air-conditioning system under refrigeration mode and heating mode, has further improved energy-saving effect.
In the air-conditioning system that above-described embodiment provides, drive plate has ten driving frequencies, the corresponding rotation speed of fan grade of each driving frequency; Concrete, the rotating speed of blower fan 1 is divided into the first estate rotating speed v1, the second grade rotating speed v2, tertiary gradient rotating speed v3, fourth estate rotating speed v4, the 5th grade rotating speed v5, the 6th grade rotating speed v6, the 7th grade rotating speed v7, the 8th grade rotating speed v8, the 9th grade rotating speed v9, the tenth grade rotating speed v10 that increase progressively successively.The rotating speed that the present invention is passed through respectively to control the driving frequency of drive plate and then controlled blower fan 1 by the first controller and second controller; Certainly, above-mentioned the first controller and second controller can also be same controller.
In one embodiment, the equal value of V1 and V5 is maximum (top) speed v10=800rpm, and the equal value of V3 and V6 is larger intermediate speed v7=650rpm, and the equal value of V2 and V4 is less intermediate speed v5=500rpm.Interchangeable, V1 can also select v8 or v9, and V2 can also select v4 or v6, and V3 can also select v7 or v8 etc., should select suitable tachometer value according to practical service environment and instructions for use.
In order to detect preferably the residing environment temperature of compressor 5, above-mentioned environment temperature sensor 3 is arranged on the fin of outdoor heat exchanger 2 air intake surfaces.Meanwhile, blower fan 1 is arranged on the outlet air surface of outdoor heat exchanger 2, is convenient to outdoor heat exchanger 2 to dry.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a control method for blower fan in air-conditioner outdoor unit, is characterized in that, comprising:
The compressor exhaust pipe pressure P 1 of sensing chamber's external environment temperature T and air-conditioning system;
Under the refrigeration mode of air-conditioning system, in the time that the unlatching of compressor is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control blower fan and export the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control described blower fan and export the second rotating speed V2, otherwise, control described blower fan output the 3rd rotating speed V3, wherein, V1 > V3 > V2;
When the unlatching of compressor is greater than after described the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues, after the second Preset Time, to improve the rotating speed of described blower fan, if P1 is less than default lower limit high pressure P
high2 continue, after described the second Preset Time, to reduce the rotating speed of described blower fan.
2. control method as claimed in claim 1, is characterized in that, also comprises:
Detect the Air suction pipe pressure P2 of described compressor;
Under the heating mode of air-conditioning system, in the time that the unlatching of compressor is less than described the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control described blower fan output the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control described blower fan output the 5th rotating speed V5, otherwise, control described blower fan output the 6th rotating speed V6, wherein, V5 > V6 > V4;
When the unlatching of compressor is greater than after described the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues, after described the second Preset Time, to improve the rotating speed of described blower fan, if P2 is greater than preset upper limit low pressure P
high2 continue, after described the second Preset Time, to reduce the rotating speed of described blower fan.
3. control method as claimed in claim 2, is characterized in that, described the first rotating speed V1 is identical with described the 5th rotating speed V5, and described the 3rd rotating speed V3 is identical with described the 6th rotating speed V6, and described the second rotating speed V2 is identical with described the 4th rotating speed V4.
4. control method as claimed in claim 3, it is characterized in that, the rotating speed of described blower fan is divided into ten grades, comprises the first estate rotating speed v1, the second grade rotating speed v2, tertiary gradient rotating speed v3, fourth estate rotating speed v4, the 5th grade rotating speed v5, the 6th grade rotating speed v6, the 7th grade rotating speed v7, the 8th grade rotating speed v8, the 9th grade rotating speed v9, the tenth grade rotating speed v10 that increase progressively successively.
5. control method as claimed in claim 4, is characterized in that, described the first rotating speed V1 equals described the tenth grade rotating speed v10, and described the 3rd rotating speed V3 equals described the 7th grade rotating speed v7, and described the second rotating speed V2 equals described the 5th grade rotating speed v5; And described the tenth grade rotating speed v10 is 800rpm, described the 7th grade rotating speed v7 is 650rpm, and described the 5th grade rotating speed v5 is 500rpm.
6. control method as claimed in claim 2, is characterized in that, controls described rotating speed and improve a grade in the time need to improving the rotating speed of described blower fan, controls described rotating speed and put forward a grade of reduction in the time need to reducing the rotating speed of described blower fan.
7. control method as claimed in claim 2, is characterized in that, described the first Preset Time is 90 seconds-120 seconds, and described the second Preset Time is 50 seconds-70 seconds; T
cold1 is 30 DEG C, T
cold2 is 20 DEG C, T
heat1 is 25 DEG C, T
heat2 is 12 DEG C; P
high1 is 25bar, P
high2 is 20bar, P
low1 is 5bar, P
low2 is 10bar.
8. an air-conditioning system, comprises off-premises station, and this off-premises station comprises compressor (5), outdoor heat exchanger (2), blower fan (1) and the drive plate for driving described blower fan (1) to rotate; It is characterized in that, also comprise:
For detection of the environment temperature sensor (3) of outdoor environment temperature T;
For detection of the high pressure sensor (4) of blast pipe (51) pressure P 1 of described compressor (5), described high pressure sensor (4) is arranged on described blast pipe (51);
The first controller being connected with described environment temperature sensor (3), described drive plate and described high pressure sensor (4) respectively, described the first controller is under the refrigeration mode of air-conditioning system, in the time that the unlatching of compressor (5) is less than the first Preset Time running time, if T is greater than default refrigeration ceiling temperature T
cold1, control described blower fan (1) output the first rotating speed V1, if T is less than default refrigeration lower limit temperature T
cold2, control described blower fan (1) output the second rotating speed V2, otherwise, control described blower fan (1) output the 3rd rotating speed V3; When the unlatching of compressor (5) is greater than after described the first Preset Time running time, if P1 is greater than preset upper limit high pressure P
high1 continues after the second Preset Time, and the rotating speed of controlling described blower fan (1) improves, if P1 is less than default lower limit high pressure P
high2 continue after described the second Preset Time, and the rotating speed of controlling described blower fan (1) reduces; Wherein, V1 > V3 > V2.
9. air-conditioning system as claimed in claim 8, is characterized in that, described off-premises station also comprises:
For detection of the low pressure sensor (6) of air intake duct (52) pressure P 2 of described compressor (5), described low pressure sensor (6) is arranged on described air intake duct (52);
The second controller being connected with described environment temperature sensor (3), described drive plate and described low pressure sensor (6) respectively, described second controller is under the heating mode of air-conditioning system, in the time that the unlatching of compressor (5) is less than described the first Preset Time running time, if T is greater than the default ceiling temperature T that heats
heat1, control described blower fan (1) output the 4th rotating speed V4, if T is less than the default lower limit temperature T that heats
heat2, control described blower fan (1) output the 5th rotating speed V5, otherwise, control described blower fan (1) output the 6th rotating speed V6; When the unlatching of compressor (5) is greater than after described the first Preset Time running time, if P2 is less than default lower limit low pressure P
low1 continues after described the second Preset Time, and the rotating speed of controlling described blower fan (1) improves, if P2 is greater than preset upper limit low pressure P
high2 continue after described the second Preset Time, and the rotating speed of controlling described blower fan (1) reduces; Wherein V5 > V6 > V4.
10. air-conditioning system as claimed in claim 9, is characterized in that, described drive plate has ten driving frequencies, the corresponding rotation speed of fan grade of each described driving frequency; Described environment temperature sensor (3) is arranged on the fin of described outdoor heat exchanger (2) air intake surface, and described blower fan (1) is arranged on the outlet air surface of described outdoor heat exchanger (2).
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| CN201410245574.5A CN103982990A (en) | 2014-06-04 | 2014-06-04 | Method for controlling draught fan in air conditioner outdoor unit and air conditioning system |
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| CN201410245574.5A CN103982990A (en) | 2014-06-04 | 2014-06-04 | Method for controlling draught fan in air conditioner outdoor unit and air conditioning system |
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| CN106288130A (en) * | 2015-05-28 | 2017-01-04 | Tcl空调器(中山)有限公司 | The control method of air-conditioner outdoor unit motor and air-conditioner |
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Application publication date: 20140813 |