CN103673206A - Outdoor machine fan adjusting method for multi-split air conditioning system - Google Patents
Outdoor machine fan adjusting method for multi-split air conditioning system Download PDFInfo
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- CN103673206A CN103673206A CN201210353052.8A CN201210353052A CN103673206A CN 103673206 A CN103673206 A CN 103673206A CN 201210353052 A CN201210353052 A CN 201210353052A CN 103673206 A CN103673206 A CN 103673206A
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Abstract
The invention discloses an outdoor machine fan adjusting method for a multi-split air conditioning system. The outdoor machine fan adjusting method for the multi-split air conditioning system comprises setting the primary rotating speed of an outdoor machine fan; detecting operating parameters and performing data handling on the detected parameters; sending the handled data to other air conditioning outdoor machines and receiving parameters from other air conditioning outdoor machines; computing the rotating speed of the outdoor machine fan according to the received parameters; performing the above steps cyclically. According to the outdoor machine fan adjusting method for the multi-split air conditioning system, power consumption of the multi-split air conditioning system is reduced due to adjustment of the rotating speed of the outdoor machine fan, the heat exchanging capability of an outdoor machine heat exchanger is adjusted due to adjustment of the rotating speed of the outdoor machine fan and refrigerant is not needed to be stored in the outdoor machine heat exchanger, all the refrigerant is utilized in the refrigerating system circulation of the multi-split air conditioning system, and the multi-split air conditioning system is guaranteed performing refrigerating with enough refrigerant.
Description
Technical field
The present invention relates to multi-connected air conditioning system technical field, relate in particular to a kind of outdoor machine fan control method for multi-connected air conditioning system.
Background technology
At present, in air-conditioner outdoor unit, conventionally adopt fan to regulate the exchange capability of heat of outdoor unit heat exchanger.When the thermal discharge of outdoor unit heat exchanger increases, improve the rotating speed of fan electromotor, when the thermal discharge of outdoor unit heat exchanger reduces, reduce the rotating speed of fan electromotor.Yet being applied to, this regulative mode can produce the problem that increases power consumption, causes the refrigerating capacity of multi-connected air conditioning system to decline after the air-conditioner outdoor unit of multi-connected air conditioning system.
For instance, the existing multi-connected air conditioning system being formed by two identical air conditioners, this system comprises two identical air-conditioner outdoor units, these two air-conditioner outdoor units connect by tube connector, cold-producing medium flows in same refrigerant line, so the condensing pressure in refrigerant line is identical.So, when the compressor operation ability of two air-conditioner outdoor units is different, the air-conditioner outdoor unit that compressor operation ability is lower just must add high-power to adapt to condensing pressure, and such two air conditioners have increased power consumption while forming after multi-connected air conditioning system than two air-conditioner outdoor unit individual operations.In addition, the lower air-conditioner outdoor unit of running ability also can a certain amount of cold-producing medium of automatic storage reduces the effective heat exchange area of its outdoor unit heat exchanger, to adapt to condensing pressure, this part cold-producing medium is stored in the bottom of outdoor unit heat exchanger, does not participate in refrigeration system circulation.Therefore, will make the cold-producing medium of whole multi-connected air conditioning system reduce, cause the refrigerating capacity of whole multi-connected air conditioning system to decline.
Therefore, need a kind of outdoor machine fan control method for multi-connected air conditioning system, to solve problems of the prior art.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of outdoor machine fan control method for multi-connected air conditioning system, comprise the following steps: the first step: the initial rotation speed of the fan that outdoor machine fan is set; Second step: detect operating parameters and the parameter detecting is carried out to data preparation; The 3rd step: the described parameter after arranging is sent to other air-conditioner outdoor unit, and receives the described parameter from described other air-conditioner outdoor unit; The 4th step: according to the described calculation of parameter outdoor machine fan rotating speed receiving; The 5th step: return to described second step and loop described second step to described the 4th step.
Preferably, described parameter comprises: condensing pressure, compressor operation capacity, outdoor unit heat exchanger outlet refrigerant temperature, outdoor environment temperature and the current rotating speed of outdoor machine fan.
Preferably, described data preparation comprises calculates compressor operation ratio and calculates off-premises station fan running ratio, wherein, described compressor operation ratio equals the ratio of described compressor operation capacity and compressor total capacity, and described outdoor machine fan running ratio equals the ratio of described outdoor machine fan rotating speed and outdoor machine fan maximum speed.
Preferably, the calculating of described outdoor machine fan rotating speed comprises the following steps: the compressor operation ratio to whole off-premises stations sorts, using the peak of described compressor operation ratio as a reference value; Every off-premises station judges respectively whether compressor operation ratio separately equals described a reference value, and generates the first judged result; According to described the first judged result, calculate described outdoor machine fan rotating speed.
Preferably, when described compressor operation ratio equals described a reference value, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
Preferably, when described compressor operation ratio is not equal to described a reference value, first described outdoor unit heat exchanger outlet refrigerant temperature is revised, judge that subsequently described condensing pressure is whether higher than the limiting value of described multi-connected air conditioning system, and generate the second judged result, according to described the second judged result, calculate described outdoor machine fan rotating speed.
Preferably, revised described outdoor unit heat exchanger outlet refrigerant temperature equals described outdoor unit heat exchanger outlet refrigerant temperature and deducts described outdoor environment temperature and add benchmark outdoor environment temperature.
Preferably, when described condensing pressure is during higher than described limiting value, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
Preferably, when described condensing pressure is not during higher than described limiting value, judge that whether revised described outdoor unit heat exchanger outlet refrigerant temperature is higher than benchmark outdoor unit heat exchanger outlet refrigerator temperature, and generate the 3rd judged result, according to described the 3rd judged result, calculate described outdoor machine fan rotating speed.
Preferably, when described outdoor unit heat exchanger outlet refrigerant temperature exports refrigerator temperature higher than described benchmark outdoor unit heat exchanger, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
Preferably, when described outdoor unit heat exchanger outlet refrigerant temperature is during higher than described benchmark outdoor unit heat exchanger outlet refrigerator temperature, described outdoor machine fan rotating speed equals described compressor operation ratio and maximal pressure contracting machine and turns round the ratio of ratio with benchmark fan running ratio and the product of high rotation speed of the fan.
According to the outdoor machine fan control method for multi-connected air conditioning system of the present invention, by regulating off-premises station rotation speed of the fan both can reduce the power consumption of multi-connected air conditioning system, simultaneously by regulating off-premises station rotation speed of the fan to regulate also without store refrigerant in outdoor unit heat exchanger the exchange capability of heat of outdoor unit heat exchanger, cold-producing medium is all participated in the refrigeration system circulation of multi-connected air conditioning system, has guaranteed that multi-connected air conditioning system has enough cold-producing mediums and carries out refrigeration work.
In summary of the invention part, introduced the concept of a series of reduced forms, this will further describe in specific embodiment part.Content part of the present invention does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to determine technical scheme required for protection.
Below in conjunction with accompanying drawing, describe advantages and features of the invention in detail.
Accompanying drawing explanation
Following accompanying drawing of the present invention is used for understanding the present invention in this as a part of the present invention.Shown in the drawings of embodiments of the present invention and description thereof, be used for explaining principle of the present invention.In the accompanying drawings,
Fig. 1 is according to the flow chart of the outdoor machine fan control method for multi-connected air conditioning system of one embodiment of the present invention;
Fig. 2 is according to the flow chart of the outdoor machine fan rotating speed computational methods of one embodiment of the present invention.
The specific embodiment
In the following description, a large amount of concrete details have been provided to more thorough understanding of the invention is provided.Yet, it will be apparent to one skilled in the art that the present invention can be implemented without one or more these details.In other example, for fear of obscuring with the present invention, for technical characterictics more well known in the art, be not described.
In order thoroughly to understand the present invention, will detailed structure be proposed in following description.Obviously, execution of the present invention is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present invention is described in detail as follows, yet except these are described in detail, the present invention can also have other embodiments.
The invention discloses a kind of outdoor machine fan control method for multi-connected air conditioning system, the method is applicable to each off-premises station in multi-connected air conditioning system, and every off-premises station is all being carried out the method simultaneously.The flow chart of this outdoor machine fan control method as shown in Figure 1, comprise the following steps: the first step: the initial rotation speed of the fan that outdoor machine fan is set, this work can be completed by the control module in off-premises station, particularly, can the fan running module in control module complete.Second step: detect operating parameters and the parameter detecting is carried out to data preparation, this step can complete by the operating parameters detection module in control module.The 3rd step: the parameter after arranging is sent to other air-conditioner outdoor unit, and receives the parameter from other air-conditioner outdoor unit, the send and receive process of parameter can the data communication module in control module be carried out.The 4th step: according to the calculation of parameter outdoor machine fan rotating speed receiving, concrete computational process can be carried out in the outdoor machine fan rotating speed computing module in control module.In the 5th step, complete and calculate after off-premises station rotation speed of the fan, need to return to second step, and loop the step of second step to the four steps so that outdoor machine fan rotating speed can be adjusted in real time for the working environment of continuous variation.
Preferably, the parameter of before mentioning comprises: condensing pressure, compressor operation capacity, outdoor unit heat exchanger outlet refrigerant temperature, outdoor environment temperature and the current rotating speed of outdoor machine fan.These parameters can reflect the working condition of off-premises station exactly, obtain the duty that these parameters are conducive to grasp exactly off-premises station.
Obtained after above-mentioned parameter, just can carry out data preparation according to these parameters.The process of this data preparation comprises to be calculated compressor operation ratio and calculates off-premises station fan running ratio, wherein, the parameter that calculating compressor operation ratio need to be used is compressor operation capacity, and the parameter that calculating off-premises station fan running ratio need to be used is the current rotating speed of outdoor machine fan.Concrete computing formula is: compressor operation ratio equals the ratio of compressor operation capacity and compressor total capacity, and outdoor machine fan running ratio equals the ratio of the current rotating speed of outdoor machine fan and outdoor machine fan maximum speed.
What next will do is exactly to calculate off-premises station rotation speed of the fan on the basis that calculates compressor operation ratio and outdoor machine fan running ratio.Referring to Fig. 2, the calculating of outdoor machine fan rotating speed comprises the following steps: first, the compressor operation ratio of whole off-premises stations is sorted, pick out the peak of compressor operation ratio, using this peak as a reference value.Then, every off-premises station judges respectively whether compressor operation ratio separately equals this reference value, and generates the first judged result.Subsequently, will calculate off-premises station rotation speed of the fan according to this first judged result.
Continuation, with reference to Fig. 2, when compressor operation ratio equals a reference value, is calculated off-premises station rotation speed of the fan according to condensing pressure.That mentions here refers to rising or the reduction along with condensing pressure according to condensing pressure calculating off-premises station rotation speed of the fan, and the temperature of outdoor unit heat exchanger also can increase or reduce, and therefore just need to correspondingly strengthen or reduce outdoor machine fan rotating speed.The method has belonged to those skilled in the art's common practise, herein this part inside is repeated no more.
When compressor operation ratio is not equal to a reference value, first to export refrigerant temperature correction to outdoor unit heat exchanger, judge subsequently condensing pressure whether higher than the limiting value of multi-connected air conditioning system (this limiting value because of the type of multi-connected air conditioning system different, for example, in R410A type multi-connected air conditioning system, limiting value is 30 to 35bar), and generate the second judged result, according to the second judged result, calculate off-premises station rotation speed of the fan.Particularly, revised outdoor unit heat exchanger outlet refrigerant temperature equals outdoor unit heat exchanger outlet refrigerant temperature and deducts outdoor environment temperature and add benchmark outdoor environment temperature.
When condensing pressure is during higher than limiting value, same or calculate off-premises station rotation speed of the fan according to condensing pressure.When condensing pressure is not during higher than limiting value, also need to judge that whether revised outdoor unit heat exchanger outlet refrigerant temperature is higher than benchmark outdoor unit heat exchanger outlet refrigerator temperature, and generate the 3rd judged result, according to the 3rd judged result, calculate off-premises station rotation speed of the fan.
When outdoor unit heat exchanger outlet refrigerant temperature exports refrigerator temperature higher than benchmark outdoor unit heat exchanger, the mode of knowing according to those skilled in the art, calculates off-premises station rotation speed of the fan according to condensing pressure.When outdoor unit heat exchanger outlet refrigerant temperature is during higher than benchmark outdoor unit heat exchanger outlet refrigerator temperature, outdoor machine fan rotating speed equals compressor operation ratio and maximal pressure contracting machine and turns round the ratio of ratio with benchmark fan running ratio and the product of high rotation speed of the fan.
After calculating each time outdoor machine fan rotating speed, all to get back to the step that detects operating parameters and the parameter detecting is carried out to data preparation, and from this step, start to carry out the calculating of the outdoor machine fan rotating speed in a new cycle, to guarantee the real-time of outdoor machine fan rotating speed.
In sum, according to the outdoor machine fan control method for multi-connected air conditioning system of the present invention, by regulating off-premises station rotation speed of the fan both can reduce the power consumption of multi-connected air conditioning system, simultaneously by regulating off-premises station rotation speed of the fan to regulate also without store refrigerant in outdoor unit heat exchanger the exchange capability of heat of outdoor unit heat exchanger, cold-producing medium is all participated in the refrigeration system circulation of multi-connected air conditioning system, has guaranteed that multi-connected air conditioning system has enough cold-producing mediums and carries out refrigeration work.
The present invention is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the present invention to be limited in described scope of embodiments.In addition it will be appreciated by persons skilled in the art that the present invention is not limited to above-described embodiment, according to instruction of the present invention, can also make more kinds of variants and modifications, these variants and modifications all drop in the present invention's scope required for protection.Protection scope of the present invention is defined by the appended claims and equivalent scope thereof.
Claims (11)
1. for an outdoor machine fan control method for multi-connected air conditioning system, it is characterized in that, comprise the following steps:
The first step: the initial rotation speed of the fan that outdoor machine fan is set;
Second step: detect operating parameters and the parameter detecting is carried out to data preparation;
The 3rd step: the described parameter after arranging is sent to other air-conditioner outdoor unit, and receives the described parameter from described other air-conditioner outdoor unit;
The 4th step: according to the described calculation of parameter outdoor machine fan rotating speed receiving;
The 5th step: return to described second step and loop described second step to described the 4th step.
2. according to outdoor machine fan control method claimed in claim 1, it is characterized in that, described parameter comprises: condensing pressure, compressor operation capacity, outdoor unit heat exchanger outlet refrigerant temperature, outdoor environment temperature and the current rotating speed of outdoor machine fan.
3. according to outdoor machine fan control method claimed in claim 2, it is characterized in that, described data preparation comprises calculates compressor operation ratio and calculates off-premises station fan running ratio, wherein, described compressor operation ratio equals the ratio of described compressor operation capacity and compressor total capacity, and described outdoor machine fan running ratio equals the ratio of the current rotating speed of described outdoor machine fan and outdoor machine fan maximum speed.
4. according to outdoor machine fan control method claimed in claim 3, it is characterized in that, the calculating of described outdoor machine fan rotating speed comprises the following steps:
Compressor operation ratio to whole off-premises stations sorts, using the peak of described compressor operation ratio as a reference value;
Every off-premises station judges respectively whether compressor operation ratio separately equals described a reference value, and generates the first judged result;
According to described the first judged result, calculate described outdoor machine fan rotating speed.
5. according to outdoor machine fan control method claimed in claim 4, it is characterized in that, when described compressor operation ratio equals described a reference value, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
6. according to outdoor machine fan control method claimed in claim 4, it is characterized in that, when described compressor operation ratio is not equal to described a reference value, first described outdoor unit heat exchanger outlet refrigerant temperature is revised, judge that subsequently described condensing pressure is whether higher than the limiting value of described multi-connected air conditioning system, and generate the second judged result, according to described the second judged result, calculate described outdoor machine fan rotating speed.
7. according to outdoor machine fan control method claimed in claim 6, it is characterized in that, revised described outdoor unit heat exchanger outlet refrigerant temperature equals described outdoor unit heat exchanger outlet refrigerant temperature and deducts described outdoor environment temperature and add benchmark outdoor environment temperature.
8. according to outdoor machine fan control method claimed in claim 6, it is characterized in that, when described condensing pressure is during higher than described limiting value, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
9. according to outdoor machine fan control method claimed in claim 6, it is characterized in that, when described condensing pressure is not during higher than described limiting value, judge that whether revised described outdoor unit heat exchanger outlet refrigerant temperature is higher than benchmark outdoor unit heat exchanger outlet refrigerator temperature, and generate the 3rd judged result, according to described the 3rd judged result, calculate described outdoor machine fan rotating speed.
10. according to outdoor machine fan control method claimed in claim 9, it is characterized in that, when described outdoor unit heat exchanger outlet refrigerant temperature exports refrigerator temperature higher than described benchmark outdoor unit heat exchanger, according to described condensing pressure, calculate described outdoor machine fan rotating speed.
11. according to outdoor machine fan control method claimed in claim 9, it is characterized in that, when described outdoor unit heat exchanger outlet refrigerant temperature is during higher than described benchmark outdoor unit heat exchanger outlet refrigerator temperature, described outdoor machine fan rotating speed equals described compressor operation ratio and maximal pressure contracting machine and turns round the ratio of ratio with benchmark fan running ratio and the product of high rotation speed of the fan.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104748431A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multiple on-line system |
| WO2020024529A1 (en) * | 2018-08-01 | 2020-02-06 | 珠海格力电器股份有限公司 | Control method, apparatus and device for air conditioner outdoor fan, and air conditioner |
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Address after: Tokyo, Japan Patentee after: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, Inc. Address before: Tokyo, Japan Patentee before: Hitachi Johnson Automatic Air Conditioning Co.,Ltd. |
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Effective date of registration: 20181217 Address after: Tokyo, Japan Patentee after: Hitachi Johnson Automatic Air Conditioning Co.,Ltd. Address before: 511685 Xuetian Management Zone, Longshan Town, Fogang County, Qingyuan City, Guangdong Province Patentee before: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Effective date of registration: 20181217 Address after: Longtian Town, Fogang County, Qingyuan, Guangdong Patentee after: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. Address before: 511685 Xuetian Management Zone, Longshan Town, Fogang County, Qingyuan City, Guangdong Province Co-patentee before: JOHNSON CONTROLS TECHNOLOGY Co. Patentee before: YORK GUANGZHOU AIR CONDITIONING AND REFRIGERATION Co.,Ltd. |
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