CN112212471B - Air conditioning system and compressor control method thereof - Google Patents

Air conditioning system and compressor control method thereof Download PDF

Info

Publication number
CN112212471B
CN112212471B CN201910616012.XA CN201910616012A CN112212471B CN 112212471 B CN112212471 B CN 112212471B CN 201910616012 A CN201910616012 A CN 201910616012A CN 112212471 B CN112212471 B CN 112212471B
Authority
CN
China
Prior art keywords
compressor
percentage
frequency
conditioning system
air conditioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910616012.XA
Other languages
Chinese (zh)
Other versions
CN112212471A (en
Inventor
王明久
陈立鹏
时斌
贺雪飞
胡乐举
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioning Electric Co Ltd
Priority to CN201910616012.XA priority Critical patent/CN112212471B/en
Publication of CN112212471A publication Critical patent/CN112212471A/en
Application granted granted Critical
Publication of CN112212471B publication Critical patent/CN112212471B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022Compressor control arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention belongs to the technical field of heat exchange, and particularly relates to an air conditioning system and a compressor control method thereof. The invention aims to solve the problem that the existing air-conditioning system has low energy efficiency under partial working conditions due to the fact that the control mode of the existing air-conditioning system to a plurality of compressors is poor. Therefore, the air conditioning system comprises the fixed-frequency compressor and the variable-frequency compressor which are connected in parallel, so that the air conditioning system can better adapt to different working conditions; the compressor control method of the present invention includes: detecting the actual capacity percentage of the inverter compressor under the condition that the inverter compressor operates alone; when the actual capacity percentage of the variable-frequency compressor reaches a first preset variable-frequency capacity percentage, acquiring the actual load demand percentage of the compressor of the air conditioning system; according to the actual load demand percentage of the compressor of the air conditioning system, the fixed-frequency compressor is selectively operated according to different capacity percentages, so that the air conditioning system can be effectively ensured to be efficiently operated under any working condition.

Description

空调系统及其压缩机控制方法Air conditioning system and compressor control method thereof

技术领域technical field

本发明属于换热技术领域,具体涉及一种空调系统及其压缩机控制方法。The invention belongs to the technical field of heat exchange, and in particular relates to an air conditioning system and a compressor control method thereof.

背景技术Background technique

随着人们生活水平的不断提高,人们对生活环境也提出了越来越高的要求。为了维持舒适的环境温度,空调器已经成为人们生活中必不可少的一种设备。通常地,空调器包括室内机、室外机以及用于连接室内机与室外机的循环回路,空调器中的冷媒通过循环回路在室外机与室内机之间不断换热,从而达到改变室温的效果。同时,由于冷媒在气液变化的过程中需要借助压缩机的辅助作用才能实现,因此,现有空调器都设置有压缩机;特别是对于一些大型空调系统而言,为了有效保障空调系统的高效运行,很多空调系统往往都设置有多个压缩机。现有空调系统往往是直接控制多个压缩机同时运行,而并没有根据空调系统的运行情况对不同压缩机进行不同的控制,从而导致现有多压缩机空调系统在部分工况下的能效较低的问题。With the continuous improvement of people's living standards, people also put forward higher and higher requirements for the living environment. In order to maintain a comfortable ambient temperature, air conditioners have become an indispensable device in people's lives. Generally, an air conditioner includes an indoor unit, an outdoor unit, and a circulation loop for connecting the indoor unit and the outdoor unit. The refrigerant in the air conditioner continuously exchanges heat between the outdoor unit and the indoor unit through the circulation loop, so as to achieve the effect of changing the room temperature. . At the same time, since the refrigerant needs to be realized by the auxiliary function of the compressor in the process of gas-liquid change, the existing air conditioners are equipped with compressors; especially for some large-scale air-conditioning systems, in order to effectively ensure the high efficiency of the air-conditioning system In operation, many air conditioning systems are often equipped with multiple compressors. Existing air-conditioning systems often directly control multiple compressors to run at the same time, but do not control different compressors differently according to the operating conditions of the air-conditioning system, which leads to the lower energy efficiency of existing multi-compressor air-conditioning systems under certain operating conditions. low problem.

相应地,本领域需要一种新的空调系统及其压缩机控制方法来解决上述问题。Accordingly, there is a need in the art for a new air conditioning system and a compressor control method thereof to solve the above problems.

发明内容SUMMARY OF THE INVENTION

为了解决现有技术中的上述问题,即为了解决现有空调系统对多个压缩机的控制方式不佳而导致空调系统在部分工况下的能效较低的问题,本发明提供了一种用于空调系统的压缩机控制方法,所述空调系统包括以并联方式相连的定频压缩机和变频压缩机,所述压缩机控制方法包括:在所述变频压缩机单独运行的情况下检测所述变频压缩机的实际能力百分比;当所述变频压缩机的实际能力百分比达到第一预设变频能力百分比时,获取所述空调系统的压缩机实际负荷需求百分比;根据所述空调系统的压缩机实际负荷需求百分比,选择性地使所述定频压缩机按照不同的能力百分比运行。In order to solve the above problems in the prior art, that is, in order to solve the problem of low energy efficiency of the air conditioning system under some working conditions due to the poor control mode of the existing air conditioning system for multiple compressors, the present invention provides a A compressor control method for an air-conditioning system, the air-conditioning system comprising a fixed-frequency compressor and a variable-frequency compressor connected in parallel, the compressor control method comprising: detecting the The actual capacity percentage of the variable frequency compressor; when the actual capacity percentage of the variable frequency compressor reaches the first preset frequency conversion capacity percentage, obtain the actual load demand percentage of the compressor of the air conditioning system; Load demand percentage, selectively operating the fixed frequency compressor at different capacity percentages.

在上述用于空调系统的压缩机控制方法的优选技术方案中,“根据所述空调系统的压缩机实际负荷需求百分比,选择性地使所述定频压缩机按照不同的能力百分比运行”的步骤包括:将所述空调系统的压缩机实际负荷需求百分比与第一预设需求百分比进行比较;如果所述空调系统的压缩机实际负荷需求百分比大于或等于所述第一预设需求百分比,则使所述定频压缩机以第一预设定频能力百分比运行。In the preferred technical solution of the above-mentioned compressor control method for an air-conditioning system, the step of "selectively operating the fixed-frequency compressor according to different capacity percentages according to the actual load demand percentage of the compressor of the air-conditioning system" Including: comparing the actual compressor load demand percentage of the air conditioning system with a first preset demand percentage; if the compressor actual load demand percentage of the air conditioning system is greater than or equal to the first preset demand percentage, making The fixed frequency compressor operates at a first preset frequency capability percentage.

在上述用于空调系统的压缩机控制方法的优选技术方案中,在“使所述定频压缩机以第一预设定频能力百分比运行”的步骤之后,所述压缩机控制方法还包括:再次获取所述空调系统的压缩机实际负荷需求百分比;将再次获取的所述空调系统的压缩机实际负荷需求百分比与所述第一预设需求百分比进行比较;如果所述空调系统的压缩机实际负荷需求百分比依然大于或等于所述第一预设需求百分比,则提高所述定频压缩机的实际能力百分比并重复执行上述获取和比较步骤,直至所述定频压缩机的实际能力百分比被提高至第二预设定频能力百分比;并且/或者如果所述空调系统的压缩机实际负荷需求百分比小于所述第一预设需求百分比,则使所述定频压缩机停机。In the preferred technical solution of the above-mentioned compressor control method for an air-conditioning system, after the step of "operating the fixed-frequency compressor at a first preset frequency capability percentage", the compressor control method further includes: Obtain the actual compressor load demand percentage of the air conditioning system again; compare the compressor actual load demand percentage obtained again with the first preset demand percentage; if the compressor actual load demand percentage of the air conditioning system is actually If the load demand percentage is still greater than or equal to the first preset demand percentage, increase the actual capacity percentage of the fixed-frequency compressor and repeat the above acquisition and comparison steps until the actual capacity percentage of the fixed-frequency compressor is increased to a second preset frequency capacity percentage; and/or if the actual compressor load demand percentage of the air conditioning system is less than the first preset demand percentage, stopping the fixed frequency compressor.

在上述用于空调系统的压缩机控制方法的优选技术方案中,在所述定频压缩机的实际能力百分比被提高至所述第二预设定频能力百分比之后,所述压缩机控制方法还包括:又一次获取所述空调系统的压缩机实际负荷需求百分比;将又一次获取的所述空调系统的压缩机实际负荷需求百分比与所述第一预设需求百分比进行比较;如果又一次获取的所述空调系统的压缩机实际负荷需求百分比依然大于或等于所述第一预设需求百分比,则将所述变频压缩机的实际能力百分比提高至第二预设变频能力百分比;并且/或者如果所述空调系统的压缩机实际负荷需求百分比小于所述第一预设需求百分比,则使所述定频压缩机停机。In the above preferred technical solution of the compressor control method for an air conditioning system, after the actual capacity percentage of the fixed-frequency compressor is increased to the second preset frequency capacity percentage, the compressor control method further The method includes: obtaining the actual compressor load demand percentage of the air conditioning system again; comparing the compressor actual load demand percentage obtained again with the first preset demand percentage; The actual compressor load demand percentage of the air conditioning system is still greater than or equal to the first preset demand percentage, increasing the actual capacity percentage of the inverter compressor to a second preset inverter capacity percentage; and/or if all If the actual load demand percentage of the compressor of the air conditioning system is less than the first preset demand percentage, the fixed frequency compressor is stopped.

在上述用于空调系统的压缩机控制方法的优选技术方案中,在“将所述变频压缩机的实际能力百分比提高至第二预设变频能力百分比”的步骤之后,所述压缩机控制方法还包括:进一步获取所述空调系统的压缩机实际负荷需求百分比;将进一步获取的所述空调系统的压缩机实际负荷需求百分比与第二预设需求百分比进行比较;根据比较结果,选择性地控制所述定频压缩机和所述变频压缩机协同工作。In the preferred technical solution of the above-mentioned compressor control method for an air conditioning system, after the step of "increasing the actual capacity percentage of the variable frequency compressor to a second preset frequency conversion capacity percentage", the compressor control method further Including: further acquiring the actual load demand percentage of the compressor of the air conditioning system; comparing the further acquired actual compressor load demand percentage of the air conditioning system with a second preset demand percentage; The fixed frequency compressor and the variable frequency compressor work together.

在上述用于空调系统的压缩机控制方法的优选技术方案中,“根据比较结果,选择性地控制所述定频压缩机和所述变频压缩机协同工作”的步骤包括:如果进一步获取的所述空调系统的压缩机实际负荷需求百分比大于或等于所述第二预设需求百分比,则使所述定频压缩机满负荷运行;并且/或者如果进一步获取的所述空调系统的压缩机实际负荷需求百分比小于所述第二预设需求百分比,则使所述定频压缩机和所述变频压缩机均以当前能力百分比运行。In the above preferred technical solution of the compressor control method for an air-conditioning system, the step of "selectively controlling the fixed-frequency compressor and the variable-frequency compressor to work together according to the comparison result" includes: if the further obtained If the actual compressor load demand percentage of the air-conditioning system is greater than or equal to the second preset demand percentage, the fixed-frequency compressor is operated at full load; and/or if the actual compressor load of the air-conditioning system is further obtained When the demand percentage is less than the second preset demand percentage, both the fixed frequency compressor and the variable frequency compressor are made to operate at the current capacity percentage.

在上述用于空调系统的压缩机控制方法的优选技术方案中,所述空调系统的压缩机实际负荷需求百分比等于所述空调系统的实际水温与目标水温的差值除以压缩机的启动温差;并且/或者所述变频压缩机的实际能力百分比等于第一变频系数乘以所述变频压缩机的当前蒸发温度加上第二变频系数乘以所述变频压缩机的当前冷凝温度加上第三变频系数乘以所述变频压缩机的当前运行电流;其中,所述第一变频系数、所述第二变频系数和所述第三变频系数由所述变频压缩机的型号确定;并且/或者所述定频压缩机的实际能力百分比等于第一定频系数乘以所述定频压缩机的当前蒸发温度加上第二定频系数乘以所述定频压缩机的当前冷凝温度加上第三定频系数乘以所述定频压缩机的当前运行电流;其中,所述第一定频系数、所述第二定频系数和所述第三定频系数由所述定频压缩机的型号确定。In a preferred technical solution of the above-mentioned compressor control method for an air-conditioning system, the actual load demand percentage of the compressor of the air-conditioning system is equal to the difference between the actual water temperature and the target water temperature of the air-conditioning system divided by the start-up temperature difference of the compressor; and/or the actual capacity percentage of the inverter compressor is equal to the first inverter compressor multiplied by the current evaporating temperature of the inverter compressor plus the second inverter compressor multiplied by the current condensing temperature of the inverter compressor plus the third inverter The coefficient is multiplied by the current operating current of the variable frequency compressor; wherein the first variable frequency coefficient, the second variable frequency coefficient and the third variable frequency coefficient are determined by the model of the variable frequency compressor; and/or the The actual capacity percentage of the fixed frequency compressor is equal to the first fixed frequency coefficient multiplied by the current evaporating temperature of the fixed frequency compressor plus the second fixed frequency coefficient multiplied by the current condensing temperature of the fixed frequency compressor plus the third fixed frequency. The frequency coefficient is multiplied by the current operating current of the fixed-frequency compressor; wherein, the first fixed-frequency coefficient, the second fixed-frequency coefficient and the third fixed-frequency coefficient are determined by the model of the fixed-frequency compressor .

在上述用于空调系统的压缩机控制方法的优选技术方案中,所述第一预设变频能力百分比是50%。In a preferred technical solution of the above-mentioned compressor control method for an air conditioning system, the first preset frequency conversion capability percentage is 50%.

在上述用于空调系统的压缩机控制方法的优选技术方案中,所述第一预设需求百分比是50%;并且/或者所述第一预设定频能力百分比是25%。In a preferred technical solution of the above-mentioned compressor control method for an air conditioning system, the first preset demand percentage is 50%; and/or the first preset frequency capacity percentage is 25%.

在上述用于空调系统的压缩机控制方法的优选技术方案中,所述第二预设定频能力百分比是75%;并且/或者所述第二预设变频能力百分比是75%;并且/或者所述第二预设定频能力百分比是10%。In a preferred technical solution of the above-mentioned compressor control method for an air conditioning system, the second preset frequency conversion capability percentage is 75%; and/or the second preset frequency conversion capability percentage is 75%; and/or The second preset frequency capability percentage is 10%.

本领域技术人员能够理解的是,在本发明的技术方案中,本发明的空调系统包括以并联方式相连的定频压缩机和变频压缩机,本发明的压缩机控制方法包括:在所述变频压缩机单独运行的情况下检测所述变频压缩机的实际能力百分比;当所述变频压缩机的实际能力百分比达到第一预设变频能力百分比时,获取所述空调系统的压缩机实际负荷需求百分比;根据所述空调系统的压缩机实际负荷需求百分比,选择性地使所述定频压缩机按照不同的能力百分比运行。需要说明的是,由于在部分负荷运行时,变频压缩机的能效较高、节能效果明显,而在高负荷或全负荷运行时,变频压缩机和定频压缩机的能效几乎没有太大差别;因此,本发明通过结合使用定频压缩机和变频压缩机以使所述空调系统能够更好地适应不同工况。具体而言,由于空调系统在大部分工作时间内都处于低负荷运行的工况下,而变频压缩机在部分负荷运行时的能效较高,因此,所述空调系统能够先控制所述变频压缩机单独运行,以便在低负荷情况下有效提升空调系统的能效;在所述变频压缩机的实际能力百分比达到所述第一预设变频能力百分比的情况下,所述空调系统能够根据所述空调系统的压缩机实际负荷需求百分比判断单独使用变频压缩机是否足以满足用户的换热需求,在单独使用变频压缩机无法满足用户需求的情况下,所述空调系统则控制所述定频压缩机运行,从而有效保证所述空调系统在任何工况下都能够高效运行。Those skilled in the art can understand that, in the technical solution of the present invention, the air conditioning system of the present invention includes a fixed-frequency compressor and a variable-frequency compressor connected in parallel, and the compressor control method of the present invention includes: in the variable-frequency compressor Detecting the actual capacity percentage of the variable frequency compressor when the compressor is running alone; when the actual capacity percentage of the variable frequency compressor reaches a first preset frequency conversion capacity percentage, obtain the actual compressor load demand percentage of the air conditioning system ; According to the actual load demand percentage of the compressor of the air conditioning system, selectively make the fixed frequency compressor operate according to different capacity percentages. It should be noted that, due to the high energy efficiency and obvious energy saving effect of variable frequency compressors during partial load operation, the energy efficiency of variable frequency compressors and fixed frequency compressors is almost the same during high load or full load operation; Therefore, the present invention enables the air conditioning system to better adapt to different working conditions by using the fixed frequency compressor and the variable frequency compressor in combination. Specifically, since the air-conditioning system operates under low-load conditions during most of the working hours, and the inverter compressor has high energy efficiency during partial-load operation, the air-conditioning system can first control the inverter compressor In order to effectively improve the energy efficiency of the air conditioning system under low load conditions; when the actual capacity percentage of the inverter compressor reaches the first preset frequency conversion capacity percentage, the air conditioning system can The actual load demand percentage of the compressor of the system judges whether the inverter compressor alone is sufficient to meet the user's heat exchange requirements. If the inverter compressor alone cannot meet the user's needs, the air conditioning system controls the fixed frequency compressor to operate. , so as to effectively ensure that the air conditioning system can operate efficiently under any working conditions.

附图说明Description of drawings

图1是本发明的压缩机控制方法的主要步骤流程图;Fig. 1 is the main step flow chart of the compressor control method of the present invention;

图2是本发明的压缩机控制方法的优选实施例的具体步骤流程图。Fig. 2 is a flow chart of specific steps of a preferred embodiment of the compressor control method of the present invention.

具体实施方式Detailed ways

下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。例如,尽管本申请中按照特定顺序描述了本发明的方法的各个步骤,但是这些顺序并不是限制性的,在不偏离本发明的基本原理的前提下,本领域技术人员可以按照不同的顺序来执行所述步骤。Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the various steps of the method of the present invention are described in this application in a specific order, these orders are not limiting, and those skilled in the art may perform different orders without departing from the basic principles of the present invention. Perform the described steps.

具体地,本发明的空调系统包括室内机、室外机以及设置在所述室内机与所述室外机之间的主循环回路,所述主循环回路上以并联方式设置有定频压缩机和变频压缩机;同时,所述空调系统还设置有换热水路,所述主循环回路与所述换热水路相连,以便所述主循环回路中的冷媒能够与所述换热水路中的水进行换热,进而通过所述换热水路与室内空气进行换热。本领域技术人员能够理解的是,本发明不对所述定频压缩机和所述变频压缩机的具体数量和类型作任何限制,技术人员可以根据实际使用需求自行设定。此外,本发明也不对所述空调系统的具体结构作任何限制,技术人员可以根据实际使用需求自行设定所述空调系统的具体结构,只要所述空调系统包括以并联方式相连的定频压缩机和变频压缩机即可。Specifically, the air conditioning system of the present invention includes an indoor unit, an outdoor unit, and a main circulation loop arranged between the indoor unit and the outdoor unit, and the main circulation loop is provided with a fixed-frequency compressor and a variable-frequency compressor in parallel. At the same time, the air conditioning system is also provided with a water exchange circuit, and the main circulation circuit is connected with the hot water exchange circuit, so that the refrigerant in the main circulation circuit can be exchanged with the water in the hot water exchange circuit The heat is further exchanged with the indoor air through the hot water exchange path. It can be understood by those skilled in the art that the present invention does not impose any limitation on the specific numbers and types of the fixed-frequency compressors and the variable-frequency compressors, and the technicians can set them by themselves according to actual use requirements. In addition, the present invention does not impose any restrictions on the specific structure of the air-conditioning system, and technicians can set the specific structure of the air-conditioning system according to the actual use requirements, as long as the air-conditioning system includes fixed-frequency compressors connected in parallel and inverter compressor.

进一步地,本发明的空调系统还包括控制器,所述控制器能够获取各个检测元件的检测数据,例如,获取设置在所述换热水路上的温度传感器的检测数据来获取所述换热水路中的水温;并且所述控制器还能够控制所述空调系统的运行,例如,控制所述定频压缩机的实际运行能力,控制所述变频压缩机的实际运行能力和运行频率等。当然,本领域技术人员还能够理解的是,本发明不对所述控制器的具体结构和型号作任何限制,并且所述控制器可以是所述空调系统原有的控制器,也可以是为执行本发明的压缩机控制方法而单独设置的控制器,技术人员可以根据实际使用需求自行设定所述控制器的结构和型号。Further, the air conditioning system of the present invention further includes a controller, which can acquire detection data of each detection element, for example, acquire detection data of a temperature sensor disposed on the hot water exchange circuit to obtain the hot water exchange circuit and the controller can also control the operation of the air conditioning system, for example, control the actual operating capability of the fixed-frequency compressor, and control the actual operating capability and operating frequency of the variable-frequency compressor. Of course, those skilled in the art can also understand that the present invention does not impose any restrictions on the specific structure and model of the controller, and the controller may be the original controller of the air-conditioning system, or it may be a controller for execution For the controller independently set according to the compressor control method of the present invention, the technical personnel can set the structure and model of the controller according to the actual use requirements.

首先参阅图1,该图是本发明的压缩机控制方法的主要步骤流程图。如图1所示,基于上述实施例中所述的空调系统,本发明的压缩机控制方法主要包括下列步骤:First, please refer to FIG. 1 , which is a flow chart of the main steps of the compressor control method of the present invention. As shown in FIG. 1, based on the air-conditioning system described in the above embodiment, the compressor control method of the present invention mainly includes the following steps:

S1:在变频压缩机单独运行的情况下,检测变频压缩机的实际能力百分比;S1: In the case of the inverter compressor running alone, detect the actual capacity percentage of the inverter compressor;

S2:当变频压缩机的实际能力百分比达到第一预设变频能力百分比时,获取空调系统的压缩机实际负荷需求百分比;S2: when the actual capacity percentage of the variable frequency compressor reaches the first preset frequency conversion capacity percentage, obtain the actual load demand percentage of the compressor of the air conditioning system;

S3:根据空调系统的压缩机实际负荷需求百分比,选择性地使定频压缩机按照不同的能力百分比运行。S3: According to the actual load demand percentage of the compressor of the air-conditioning system, the fixed-frequency compressor is selectively operated according to different capacity percentages.

进一步地,在步骤S1中,所述控制器能够控制所述变频压缩机先于所述定频压缩机运行,以便在所述变频压缩机单独运行的情况下检测所述变频压缩机的实际能力百分比;由于变频压缩机在部分负荷下运行时的能效较高、节能效果明显,因此,所述控制器能够先控制所述变频压缩机运行,以便有效保证所述空调系统能够在低负荷的情况下保证较高的能效。本领域技术人员能够理解的是,本发明不对所述变频压缩机启动时的初始实际能力作任何限制,技术人员可以根据实际使用需求自行设定;同时,本发明也不对所述变频压缩机启动后的控制方式作任何限制,技术人员可以根据实际使用需求自行设定所述变频压缩机的压缩机控制方法。Further, in step S1, the controller can control the variable frequency compressor to operate before the fixed frequency compressor, so as to detect the actual capacity of the variable frequency compressor when the variable frequency compressor operates alone Since the inverter compressor has high energy efficiency and obvious energy saving effect when running under partial load, the controller can first control the operation of the inverter compressor, so as to effectively ensure that the air conditioning system can operate under low load conditions. Guaranteed high energy efficiency. It can be understood by those skilled in the art that the present invention does not impose any restrictions on the initial actual capability of the variable frequency compressor when it is started, and the technicians can set it according to the actual use requirements; at the same time, the present invention does not limit the startup of the variable frequency compressor. The technical personnel can set the compressor control method of the inverter compressor by themselves according to the actual use requirements.

进一步地,在步骤S2中,首先,需要说明的是,在所述变频压缩机启动运行后,根据所述空调系统的运行需求,所述控制器可能会对所述变频压缩机的实际能力进行调节控制,当所述空调系统的换热需求较强时,所述变频压缩机的初始实际能力往往难以满足空调系统的运行需求,此时,所述控制器就会提高所述变频压缩机的实际能力。当所述变频压缩机的实际能力百分比达到第一预设变频能力百分比时,所述控制器获取所述空调系统的压缩机实际负荷需求百分比,以便所述控制器能够根据所述空调系统的压缩机实际负荷需求百分比判断单独使用变频压缩机是否足以满足用户的换热需求。可以理解的是,技术人员可以根据实际使用需求自行设定所述第一预设变频能力百分比的具体数值,优选地,所述第一预设变频能力百分比为百分之五十。此外,还需要说明的是,本发明不对所述控制器获取压缩机实际负荷需求百分比的具体方式作任何限制,技术人员可以根据实际使用需求自行设定其具体获取方式,只要所述控制器能够根据压缩机实际负荷需求百分比判断所述空调系统对压缩机的负荷需求即可。Further, in step S2, first of all, it should be noted that, after the inverter compressor starts to operate, according to the operation requirements of the air conditioning system, the controller may perform an operation on the actual capacity of the inverter compressor. Adjustment control. When the heat exchange demand of the air conditioning system is strong, the initial actual capacity of the variable frequency compressor is often difficult to meet the operating requirements of the air conditioning system. At this time, the controller will increase the frequency conversion compressor. actual ability. When the actual capacity percentage of the variable frequency compressor reaches a first preset frequency conversion capacity percentage, the controller acquires the actual compressor load demand percentage of the air conditioning system, so that the controller can The actual load demand percentage of the machine is used to judge whether the use of the inverter compressor alone is enough to meet the heat exchange demand of the user. It can be understood that the technical personnel can set the specific value of the first preset frequency conversion capability percentage by themselves according to actual use requirements, and preferably, the first preset frequency conversion capability percentage is 50%. In addition, it should be noted that the present invention does not impose any restrictions on the specific method for the controller to obtain the actual load demand percentage of the compressor, and the technical personnel can set the specific acquisition method according to the actual use requirements, as long as the controller can The load demand of the air-conditioning system on the compressor can be determined according to the actual load demand percentage of the compressor.

进一步地,在步骤S3中,所述控制器能够根据所述空调系统的压缩机实际负荷需求百分比选择性地使所述定频压缩机按照不同的能力百分比运行。可以理解的是,所述控制器能够根据所述空调系统的压缩机实际负荷需求百分比判断当所述变频压缩机的实际能力百分比达到所述第一预设变频能力百分比时,所述空调系统单独使用所述变频压缩机是否足以满足用户的换热需求,在单独使用所述变频压缩机已经无法满足用户需求的情况下,所述控制器控制所述定频压缩机按照不同的能力百分比运行,从而有效保证所述空调系统在任何工况下都能够高效运行。当然,还需要说明的是,本发明不对本步骤中所使用的具体判断方式作任何限制,例如,所述控制器可以将所述空调系统的压缩机实际负荷需求百分比与预设需求百分比相比,也可以将所述空调系统的压缩机实际负荷需求百分比带入关系式中进行判断,技术人员可以根据实际使用需求自行设定其具体的判断方式。Further, in step S3, the controller can selectively make the fixed-frequency compressor operate according to different capacity percentages according to the actual load demand percentage of the compressor of the air-conditioning system. It can be understood that the controller can determine, according to the actual load demand percentage of the compressor of the air conditioning system, that when the actual capacity percentage of the variable frequency compressor reaches the first preset frequency conversion capacity percentage, the air conditioning system alone Whether the use of the variable frequency compressor is sufficient to meet the heat exchange requirements of the user, in the case that the use of the variable frequency compressor alone can no longer meet the user's needs, the controller controls the fixed frequency compressor to operate according to different capacity percentages, Therefore, it is effectively ensured that the air conditioning system can operate efficiently under any working conditions. Of course, it should also be noted that the present invention does not impose any restrictions on the specific judgment method used in this step. For example, the controller may compare the actual load demand percentage of the compressor of the air conditioning system with the preset demand percentage , the actual load demand percentage of the compressor of the air conditioning system can also be brought into the relational expression for judgment, and the technician can set its specific judgment method according to the actual use demand.

下面参阅图2,该图是本发明的压缩机控制方法的优选实施例的具体步骤流程图。如图2所示,基于上述实施例中所述的空调系统,本发明的压缩机控制方法的优选实施例具体包括下列步骤:2 , which is a flow chart of specific steps of a preferred embodiment of the compressor control method of the present invention. As shown in FIG. 2, based on the air conditioning system described in the above embodiments, a preferred embodiment of the compressor control method of the present invention specifically includes the following steps:

S101:在变频压缩机单独运行的情况下,检测变频压缩机的实际能力百分比;S101: In the case of the inverter compressor running alone, detect the actual capacity percentage of the inverter compressor;

S102:判断变频压缩机的实际能力百分比是否大于或等于百分之五十;如果是,则执行步骤S105;如果否,则执行步骤S103;S102: Determine whether the actual capacity percentage of the inverter compressor is greater than or equal to 50%; if yes, go to step S105; if not, go to step S103;

S103:判断实际水温与目标水温的差值是否等于零;如果是,则执行步骤S104;如果否,则再次执行步骤S101;S103: Determine whether the difference between the actual water temperature and the target water temperature is equal to zero; if so, execute step S104; if not, execute step S101 again;

S104:使变频压缩机停机;S104: stop the inverter compressor;

S105:获取空调系统的压缩机实际负荷需求百分比;S105: Obtain the actual load demand percentage of the compressor of the air-conditioning system;

S106:判断压缩机实际负荷需求百分比是否大于或等于百分之五十;如果是,则执行步骤S108;如果否,则执行步骤S107;S106: Determine whether the actual load demand percentage of the compressor is greater than or equal to fifty percent; if yes, go to step S108; if not, go to step S107;

S107:使变频压缩机保持百分之五十的能力运行;S107: Keep the inverter compressor running at fifty percent of its capacity;

S108:使定频压缩机以百分之二十五的能力运行;S108: Make the fixed frequency compressor run at 25% capacity;

S109:再次获取空调系统的压缩机实际负荷需求百分比;S109: Obtain the actual load demand percentage of the compressor of the air-conditioning system again;

S110:判断压缩机实际负荷需求百分比是否大于或等于百分之五十;如果是,则执行步骤S111;如果否,则执行步骤S122;S110: Determine whether the actual compressor load demand percentage is greater than or equal to 50%; if yes, go to step S111; if not, go to step S122;

S111:使定频压缩机以百分之五十的能力运行;S111: Make the fixed frequency compressor run at fifty percent capacity;

S112:再次获取空调系统的压缩机实际负荷需求百分比;S112: Obtain the actual load demand percentage of the compressor of the air conditioning system again;

S113:判断压缩机实际负荷需求百分比是否大于或等于百分之五十;如果是,则执行步骤S114;如果否,则执行步骤S122;S113: Determine whether the actual compressor load demand percentage is greater than or equal to 50%; if yes, go to step S114; if not, go to step S122;

S114:使定频压缩机以百分之七十五的能力运行;S114: Make the fixed frequency compressor run at 75% capacity;

S115:再次获取空调系统的压缩机实际负荷需求百分比;S115: Obtain the actual load demand percentage of the compressor of the air conditioning system again;

S116:判断压缩机实际负荷需求百分比是否大于或等于百分之五十;如果是,则执行步骤S117;如果否,则执行步骤S122;S116: Determine whether the actual compressor load demand percentage is greater than or equal to fifty percent; if yes, go to step S117; if not, go to step S122;

S117:使变频压缩机以百分之七十五的能力运行;S117: Make the inverter compressor run at 75% capacity;

S118:再次获取空调系统的压缩机实际负荷需求百分比;S118: Obtain the actual load demand percentage of the compressor of the air conditioning system again;

S119:判断压缩机实际负荷需求百分比是否大于或等于百分之十;如果是,则执行步骤S120;如果否,则执行步骤S121;S119: Determine whether the actual compressor load demand percentage is greater than or equal to ten percent; if yes, go to step S120; if not, go to step S121;

S120:使定频压缩机以满负荷运行;S120: Make the fixed frequency compressor run at full load;

S121:使变频压缩机和定频压缩机均以当前能力百分比运行;S121: Make both the variable frequency compressor and the fixed frequency compressor run at the current capacity percentage;

S122:使定频压缩机停机。S122: Stop the fixed frequency compressor.

进一步地,在步骤S101中,当所述空调系统启动时,所述控制器能够控制所述变频压缩机先于所述定频压缩机启动,以便有效保证所述空调系统在低负荷运行时也能够具备较高能效;在所述变频压缩机单独运行的情况下,所述控制器能够检测所述变频压缩机的实际能力百分比。需要说明的是,通过近年来的统计数据发现,按照欧洲算法计算时,空调系统满负荷运行的时间通常只占总运行时间的1.4%,而按照美制算法计算时,空调系统满负荷运行的时间占总运行时间的比例更是不到0.5%;因此,所述空调系统有必要根据其自身的负荷情况来控制不同压缩机的运行情况,以便有效提高所述空调系统的能效,进而有效保证所述空调系统在各个工况下均能够保持较高能效。此外,还需要说明的是,本发明不对所述变频压缩机启动时的初始能力百分比作任何限制,技术人员可以根据实际使用需求自行设定。Further, in step S101, when the air conditioning system is started, the controller can control the variable frequency compressor to start before the fixed frequency compressor, so as to effectively ensure that the air conditioning system can also be operated at a low load. It can have higher energy efficiency; when the inverter compressor operates alone, the controller can detect the actual capacity percentage of the inverter compressor. It should be noted that according to the statistical data in recent years, when calculated according to the European algorithm, the time of full-load operation of the air-conditioning system usually only accounts for 1.4% of the total operating time, while when calculated according to the American algorithm, the time of full-load operation of the air-conditioning system is The proportion of the total operating time is less than 0.5%; therefore, it is necessary for the air-conditioning system to control the operation of different compressors according to its own load conditions, so as to effectively improve the energy efficiency of the air-conditioning system, thereby effectively guaranteeing all The air conditioning system can maintain high energy efficiency under various working conditions. In addition, it should be noted that the present invention does not impose any restrictions on the initial capacity percentage of the variable frequency compressor when it is started, and technicians can set it according to actual use requirements.

进一步地,在步骤S102中,由于当所述变频压缩机的实际能力百分比小于百分之五十时,所述变频压缩机的能效通常都会明显高于所述定频压缩机;因此,在所述变频压缩机启动运行以后,所述控制器能够判断所述变频压缩机的实际能力百分比是否大于或等于百分之五十,以便判断所述控制器应该提高所述变频压缩机的实际能力百分比还是应该启动所述定频压缩机。本领域技术人员能够理解的是,虽然本优选实施例中所述的第一预设变频能力百分比为百分之五十,但是,技术人员显然还可以根据实际使用需求自行设定所述第一预设变频能力百分比的具体数值。此外,还需要说明的是,技术人员可以根据实际使用需求自行设定变频压缩机的实际能力百分比的计算方式,作为一种实施例,所述变频压缩机的实际能力百分比的计算方式如下:Further, in step S102, since when the actual capacity percentage of the variable frequency compressor is less than 50%, the energy efficiency of the variable frequency compressor is usually significantly higher than that of the fixed frequency compressor; therefore, in all After the inverter compressor starts to run, the controller can determine whether the actual capacity percentage of the inverter compressor is greater than or equal to fifty percent, so as to determine that the controller should increase the actual capacity percentage of the inverter compressor. The fixed frequency compressor should still be started. It can be understood by those skilled in the art that although the first preset frequency conversion capability percentage described in this preferred embodiment is 50%, it is obvious that technicians can also set the first preset frequency conversion capability according to actual usage requirements. The specific value of the preset frequency conversion capacity percentage. In addition, it should be noted that technicians can set the calculation method of the actual capacity percentage of the inverter compressor by themselves according to the actual use requirements. As an embodiment, the calculation method of the actual capacity percentage of the inverter compressor is as follows:

Qa*100%=k1*Tev+k2*Tco+k3*Ac Qa*100%=k1*Tev+k2*Tco+k3*A c

其中,k1为第一变频系数,k2为第二变频系数,k3为第三变频系数,并且所述第一变频系数、所述第二变频系数和所述第三变频系数均由所述变频压缩机的具体型号确定;Tev为所述变频压缩机的当前蒸发温度,单位为℃;Tco为所述变频压缩机的当前冷凝温度,单位为℃;Ac为所述变频压缩机的当前运行电流,单位为A。Wherein, k1 is the first frequency conversion coefficient, k2 is the second frequency conversion coefficient, k3 is the third frequency conversion coefficient, and the first frequency conversion coefficient, the second frequency conversion coefficient and the third frequency conversion coefficient are all compressed by the frequency conversion The specific model of the compressor is determined; Tev is the current evaporating temperature of the inverter compressor, the unit is °C; Tco is the current condensing temperature of the inverter compressor, the unit is °C; A c is the current operating current of the inverter compressor , the unit is A.

需要说明的是,技术人员需要根据所述变频压缩机的具体型号自行确定所述第一变频系数、所述第二变频系数和所述第三变频系数的具体数值;同时,本发明不对所述控制器获取所述变频压缩机的当前蒸发温度、当前冷凝温度和当前运行电流的具体方式作任何限制,技术人员可以根据实际使用需求自行设定。此外,还需要说明的是,所述定频压缩机的实际能力百分比也可以参照上述计算式进行计算,技术人员只需将上述计算式中的参数替换为所述定频压缩机的相应参数即可;同时,上述计算式中涉及的三个系数也需要根据所述定频压缩机的具体型号自行确定。It should be noted that the technical personnel need to determine the specific values of the first frequency conversion coefficient, the second frequency conversion coefficient and the third frequency conversion coefficient according to the specific model of the frequency conversion compressor; The specific manner in which the controller obtains the current evaporating temperature, the current condensing temperature and the current operating current of the variable frequency compressor is subject to any restrictions, which can be set by the technicians according to actual use requirements. In addition, it should be noted that the actual capacity percentage of the fixed-frequency compressor can also be calculated with reference to the above-mentioned calculation formula, and the technician only needs to replace the parameters in the above-mentioned calculation formula with the corresponding parameters of the fixed-frequency compressor. Yes; at the same time, the three coefficients involved in the above calculation formula also need to be determined according to the specific model of the fixed-frequency compressor.

进一步地,如果所述变频压缩机的实际能力百分比未达到百分之五十,则执行步骤S103,即所述控制器能够获取所述换热水路的实际水温,并且计算所述实际水温与用户设定的目标水温的差值,判断该差值是否等于零,即所述换热水路的实际水温是否等于用户设定的目标水温。如果所述换热水路的实际水温等于用户设定的目标水温,则说明所述空调系统已经能够满足用户的换热需求,由于水的比热容大,所述换热水路中的水温不会急剧降低;在此情形下,执行步骤S104,即所述控制器控制所述变频压缩机停机,以便依靠所述换热水路中的余温维持换热效果即可,从而有效达到节能效果。如果所述换热水路的实际水温与用户设定的目标水温不等,则说明所述空调系统还不足以满足用户的换热需求,所述换热水路中的水还需要进一步与冷媒进行换热;在此情形下,所述控制器可以改变所述变频压缩机的运行参数后,再次执行步骤S101。例如,所述控制器可以进一步提高所述变频压缩机的实际能力百分比,作为一种实施例,所述控制器能够根据所述实际水温与所述目标水温的差值控制所述变频压缩机的实际能力百分比。具体而言,所述控制器可以通过所述实际水温与所述目标水温的差值控制所述变频压缩机的实际能力百分比的改变幅度以及所述变频压缩机在每个能力百分比下持续运行的时间,其具体控制逻辑为:所述实际水温与所述目标水温的差值越大,所述变频压缩机的实际能力百分比的提升速度越快,并且所述变频压缩机在相对较低的实际能力百分比下的持续运行时间也越短;反之,所述实际水温与所述目标水温的差值越小,所述变频压缩机的实际能力百分比的提升速度越慢,并且所述变频压缩机在相对较低的实际能力百分比下的持续运行时间也越长。需要说明的是,在本发明的整个压缩机控制方法中,所述控制器在对所述变频压缩机和所述定频压缩机的实际能力百分比进行调节时均可以采用这种控制逻辑,当然,这种控制逻辑也并不是限制性的,技术人员也可以根据实际使用需求自行设定其具体控制逻辑。Further, if the actual capacity percentage of the inverter compressor does not reach 50%, step S103 is executed, that is, the controller can obtain the actual water temperature of the hot water exchange circuit, and calculate the actual water temperature and the user The difference between the set target water temperatures is used to determine whether the difference is equal to zero, that is, whether the actual water temperature of the hot water exchange circuit is equal to the target water temperature set by the user. If the actual water temperature of the hot water exchange circuit is equal to the target water temperature set by the user, it means that the air conditioning system has been able to meet the heat exchange demand of the user. Due to the large specific heat capacity of water, the water temperature in the hot water exchange circuit will not drop sharply. In this case, step S104 is executed, that is, the controller controls the inverter compressor to stop, so as to maintain the heat exchange effect by relying on the residual temperature in the hot water exchange circuit, thereby effectively achieving the energy saving effect. If the actual water temperature of the hot water exchange circuit is not equal to the target water temperature set by the user, it means that the air conditioning system is not enough to meet the user's heat exchange needs, and the water in the hot water exchange circuit needs to be further exchanged with refrigerant. heat; in this case, the controller may perform step S101 again after changing the operating parameters of the inverter compressor. For example, the controller can further increase the actual capacity percentage of the variable frequency compressor. As an example, the controller can control the performance of the variable frequency compressor according to the difference between the actual water temperature and the target water temperature. Actual capacity percentage. Specifically, the controller may control the change range of the actual capacity percentage of the variable frequency compressor and the continuous operation of the variable frequency compressor under each capacity percentage through the difference between the actual water temperature and the target water temperature. The specific control logic is as follows: the greater the difference between the actual water temperature and the target water temperature, the faster the increase speed of the actual capacity percentage of the inverter compressor, and the inverter compressor in a relatively low actual The continuous operation time at the capacity percentage is also shorter; on the contrary, the smaller the difference between the actual water temperature and the target water temperature, the slower the increasing speed of the actual capacity percentage of the inverter compressor, and the inverter compressor is in the The duration of operation is also longer at a relatively low percentage of actual capacity. It should be noted that, in the entire compressor control method of the present invention, the controller can use this control logic when adjusting the actual capacity percentage of the variable frequency compressor and the fixed frequency compressor. Of course, , this control logic is not restrictive, and technicians can also set their specific control logic according to actual use requirements.

进一步地,在步骤S105中,如果所述变频压缩机的实际能力百分比已经达到百分之五十,则所述控制器能够获取所述空调系统的压缩机实际负荷需求百分比;需要说明的是,技术人员可以根据实际使用需求自行设定所述空调系统的压缩机实际负荷需求百分比的具体计算方式,作为一种实施例,所述空调系统的压缩机实际负荷需求百分比的计算方式如下:Further, in step S105, if the actual capacity percentage of the inverter compressor has reached 50%, the controller can obtain the actual compressor load demand percentage of the air conditioning system; it should be noted that, The technical personnel can set the specific calculation method of the actual load demand percentage of the compressor of the air conditioning system by themselves according to the actual use demand. As an embodiment, the calculation method of the actual compressor load demand percentage of the air conditioning system is as follows:

m*100%=(Ta-Tt)/Tdiff m*100%=(T a -T t )/T diff

其中,Ta为所述空调系统的换热水路的实际水温,单位为℃;Tt为所述空调系统的目标水温,单位为℃;Tdiff为压缩机的启动温差,单位为℃。Wherein, T a is the actual water temperature of the hot water exchange circuit of the air conditioning system, in °C; T t is the target water temperature of the air conditioning system, in °C; T diff is the compressor startup temperature difference, in °C.

需要说明的是,所述压缩机的启动温差需要由技术人员根据实际使用需求自行设定,同时,当所述实际水温与所述目标水温的差值大于所述压缩机的启动温差时,直接将所述空调系统的压缩机实际负荷需求百分比判定为100%。It should be noted that the start-up temperature difference of the compressor needs to be set by the technicians according to the actual use requirements. At the same time, when the difference between the actual water temperature and the target water temperature is greater than the start-up temperature difference of the compressor, directly The actual compressor load demand percentage of the air conditioning system is determined to be 100%.

进一步地,在步骤S106中,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比小于百分之五十,则说明仅使所述变频压缩机维持当前能力百分比即足以满足用户的换热需求,在此情形下,执行步骤S107,即,所述控制器控制所述变频压缩机维持百分之五十的能力运行即可。同时,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比大于或等于百分之五十,则说明仅使所述变频压缩机维持当前能力百分比已经无法满足用户的换热需求,在此情形下,执行步骤S108,即,所述控制器控制所述定频压缩机启动,并以百分之二十五的能力运行,以便有效满足用户的换热需求。需要说明的是,虽然本优选实施例中所述的第一预设需求百分比为百分之五十,但是,技术人员显然还可以根据实际使用需求自行设定所述第一预设需求百分比的具体数值。同时,虽然本优选实施例中所述的第一预设定频能力百分比为百分之二十五,但是,技术人员显然还可以根据实际使用需求自行设定所述第一预设定频能力百分比的具体数值。Further, in step S106, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is less than 50%, it means that only maintaining the current capacity percentage of the inverter compressor is sufficient to meet the user's demand. Heat exchange demand, in this case, step S107 is performed, that is, the controller controls the inverter compressor to maintain the operation at 50% capacity. At the same time, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to 50%, it means that only maintaining the current capacity percentage of the inverter compressor can no longer meet the heat exchange demand of the user, In this case, step S108 is executed, that is, the controller controls the fixed-frequency compressor to start and operate at a capacity of 25%, so as to effectively meet the heat exchange demand of the user. It should be noted that although the first preset demand percentage described in this preferred embodiment is 50%, it is obvious that technicians can also set the first preset demand percentage by themselves according to actual use requirements. specific value. At the same time, although the percentage of the first preset frequency setting capability described in this preferred embodiment is 25%, it is obvious that technicians can also set the first preset frequency setting capability by themselves according to actual usage requirements The specific value of the percentage.

进一步地,在所述定频压缩机以百分之二十五的能力运行之后,执行步骤S109,即所述控制器能够再次获取所述空调系统的压缩机实际负荷需求百分比,以便判断所述空调系统的当前换热能力是否足以满足用户的换热需求。在步骤S110中,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比小于百分之五十,则说明所述空调系统此时的换热能力已经足以满足用户的换热需求,在此情形下,为了有效节能,执行步骤S122,即所述控制器能够控制所述定频压缩机停机,而仅使用所述变频压缩机参与换热。如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比大于或等于百分之五十,则说明所述空调系统此时的换热能力还不足以满足用户的换热需求,在此情形下,执行步骤S111,即所述控制器能够控制所述定频压缩机以百分之五十的能力运行,以便有效提升所述空调系统的换热能力。Further, after the fixed-frequency compressor operates at a capacity of 25%, step S109 is executed, that is, the controller can obtain the actual load demand percentage of the compressor of the air-conditioning system again, so as to determine the Whether the current heat exchange capacity of the air conditioning system is sufficient to meet the heat exchange needs of users. In step S110, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is less than 50%, it means that the heat exchange capacity of the air conditioning system at this time is sufficient to meet the heat exchange demand of the user, In this case, in order to effectively save energy, step S122 is executed, that is, the controller can control the fixed-frequency compressor to stop, and only use the variable-frequency compressor to participate in heat exchange. If the controller determines that the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to 50%, it means that the heat exchange capacity of the air conditioning system at this time is not enough to meet the heat exchange demand of the user. Here In this case, step S111 is executed, that is, the controller can control the fixed-frequency compressor to operate at 50% capacity, so as to effectively improve the heat exchange capacity of the air-conditioning system.

更进一步地,在所述定频压缩机以百分之五十的能力运行之后,执行步骤S112,即所述控制器能够再次获取所述空调系统的压缩机实际负荷需求百分比,以便判断所述空调系统的当前换热能力是否足以满足用户的换热需求。在步骤S113中,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比小于百分之五十,则说明所述空调系统此时的换热能力已经足以满足用户的换热需求,在此情形下,为了有效节能,执行步骤S122,即所述控制器能够控制所述定频压缩机停机,而仅使用所述变频压缩机参与换热。如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比大于或等于百分之五十,则说明所述空调系统此时的换热能力还不足以满足用户的换热需求,在此情形下,执行步骤S114,即所述控制器能够控制所述定频压缩机以百分之七十五的能力运行,以便有效提升所述空调系统的换热能力。本领域技术人员能够理解的是,虽然本优选实施例中所述的第二预设定频能力百分比为百分之七十五,但是,技术人员显然还可以根据实际使用需求自行设定所述第二预设定频能力百分比的具体数值;同时,虽然本优选实施例中并未将所述定频压缩机的实际能力百分比直接从所述第一预设定频能力百分比提高至所述第二预设定频能力百分比,显然,技术人员可以根据实际使用需求自行设定将所述定频压缩机的实际能力百分比从所述第一预设定频能力百分比提高至所述第二预设定频能力百分比的具体过程。Further, after the fixed-frequency compressor runs at 50% capacity, step S112 is executed, that is, the controller can obtain the actual load demand percentage of the compressor of the air-conditioning system again, so as to determine the Whether the current heat exchange capacity of the air conditioning system is sufficient to meet the heat exchange needs of users. In step S113, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is less than 50%, it means that the heat exchange capacity of the air conditioning system at this time is sufficient to meet the heat exchange demand of the user, In this case, in order to effectively save energy, step S122 is executed, that is, the controller can control the fixed-frequency compressor to stop, and only use the variable-frequency compressor to participate in heat exchange. If the controller determines that the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to 50%, it means that the heat exchange capacity of the air conditioning system at this time is not enough to meet the heat exchange demand of the user. Here In this case, step S114 is executed, that is, the controller can control the fixed-frequency compressor to operate at a capacity of 75%, so as to effectively improve the heat exchange capacity of the air-conditioning system. Those skilled in the art can understand that, although the second preset frequency capability percentage described in this preferred embodiment is 75%, it is obvious that the technical personnel can also set the The specific value of the second preset frequency capability percentage; at the same time, although this preferred embodiment does not directly increase the actual capability percentage of the fixed-frequency compressor from the first preset frequency capability percentage to the first preset frequency capability percentage 2. Preset frequency capability percentage. Obviously, technicians can set the actual capability percentage of the fixed-frequency compressor to increase from the first preset frequency capability percentage to the second preset capacity percentage based on actual usage requirements. The specific process of the percentage of fixed frequency capability.

更进一步地,在所述定频压缩机以百分之七十五的能力运行之后,执行步骤S115,即所述控制器能够再次获取所述空调系统的压缩机实际负荷需求百分比,以便判断所述空调系统的当前换热能力是否足以满足用户的换热需求。在步骤S116中,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比小于百分之五十,则说明所述空调系统此时的换热能力已经足以满足用户的换热需求,在此情形下,为了有效实现节能效果,执行步骤S122,即所述控制器能够控制所述定频压缩机停机,而仅使用所述变频压缩机参与换热。如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比依然大于或等于百分之五十,则说明所述空调系统此时的换热能力还不足以满足用户的换热需求,在此情形下,执行步骤S117,即,所述控制器将所述变频压缩机的实际运行能力提升至百分之七十五,以便有效提升所述空调系统的换热能力。需要说明的是,虽然本优选实施例中所述的第二预设变频能力百分比为百分之七十五,但是,技术人员显然还可以根据实际使用需求自行设定所述第二预设变频能力百分比的具体数值。Further, after the fixed-frequency compressor operates at a capacity of 75%, step S115 is executed, that is, the controller can obtain the actual load demand percentage of the compressor of the air-conditioning system again, so as to determine the Whether the current heat exchange capacity of the air conditioning system is sufficient to meet the heat exchange needs of users. In step S116, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is less than 50%, it means that the heat exchange capacity of the air conditioning system at this time is sufficient to meet the heat exchange demand of the user, In this case, in order to effectively achieve the energy saving effect, step S122 is executed, that is, the controller can control the fixed-frequency compressor to stop, and only use the variable-frequency compressor to participate in heat exchange. If the controller determines that the actual load demand percentage of the compressor of the air conditioning system is still greater than or equal to 50%, it means that the heat exchange capacity of the air conditioning system at this time is not enough to meet the heat exchange demand of the user. In this case, step S117 is performed, that is, the controller increases the actual operating capacity of the inverter compressor to 75%, so as to effectively improve the heat exchange capacity of the air conditioning system. It should be noted that although the percentage of the second preset frequency conversion capability described in this preferred embodiment is 75%, it is obvious that the technical personnel can also set the second preset frequency conversion capacity by themselves according to the actual use requirements. The specific value of the ability percentage.

更进一步地,在所述变频压缩机和所述定频压缩机均以百分之七十五的能力运行之后,执行步骤S118,即所述控制器能够再次获取所述空调系统的压缩机实际负荷需求百分比,以便判断所述空调系统的当前换热能力是否足以满足用户的换热需求。在步骤S119中,由于此时所述变频压缩机和所述定频压缩机均已处于高负荷运行的状态,则说明所述空调系统需要较高的换热能力才足以满足用户的换热需求,在此情形下,为了有效保证所述空调系统的换热效果,所述控制器需要判断所述空调系统的压缩机实际负荷需求百分比是否大于或等于百分之十。如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比小于百分之十,则说明所述空调系统此时的换热能力已经足以满足用户的换热需求,在此情形下,为了有效保证所述空调系统的高换热能力,执行步骤S121,即所述控制器能够控制所述变频压缩机和所述定频压缩机均以当前能力百分比运行,进而有效保证所述空调系统的换热能力始终能够满足用户的换热需求。同时,如果所述控制器判断所述空调系统的压缩机实际负荷需求百分比大于或等于百分之十,则说明所述空调系统此时的换热能力依然不足以满足用户的换热需求,在此情形下,为了进一步提高所述空调系统的换热能力,执行步骤S120,即,所述控制器控制所述定频压缩机以满负荷运行,也就是将所述定频压缩机的实际运行能力提升至百分之百,以便进一步提升所述空调系统的换热能力。Further, after both the variable frequency compressor and the fixed frequency compressor are running at 75% capacity, step S118 is executed, that is, the controller can obtain the actual compressor of the air conditioning system again. Load demand percentage, so as to judge whether the current heat exchange capacity of the air conditioning system is sufficient to meet the heat exchange demand of users. In step S119, since both the variable frequency compressor and the fixed frequency compressor are already in a state of high-load operation at this time, it means that the air-conditioning system needs a higher heat exchange capacity to be sufficient to meet the heat exchange demand of the user In this case, in order to effectively ensure the heat exchange effect of the air conditioning system, the controller needs to determine whether the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to ten percent. If the controller determines that the actual load demand percentage of the compressor of the air conditioning system is less than ten percent, it means that the heat exchange capacity of the air conditioning system at this time is sufficient to meet the heat exchange demand of the user. In this case, in order to To effectively ensure the high heat exchange capacity of the air-conditioning system, step S121 is executed, that is, the controller can control both the variable-frequency compressor and the fixed-frequency compressor to operate at the current capacity percentage, thereby effectively ensuring the air-conditioning system. The heat exchange capacity can always meet the user's heat exchange needs. At the same time, if the controller determines that the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to ten percent, it means that the heat exchange capacity of the air conditioning system at this time is still insufficient to meet the heat exchange demand of the user. In this case, in order to further improve the heat exchange capacity of the air-conditioning system, step S120 is executed, that is, the controller controls the fixed-frequency compressor to operate at full load, that is, the actual operation of the fixed-frequency compressor is adjusted. The capacity is increased to 100%, so as to further improve the heat exchange capacity of the air conditioning system.

需要说明的是,虽然本优选实施例中所述的第二预设需求百分比为百分之十,但是,技术人员显然还可以根据实际使用需求自行设定所述第二预设需求百分比的具体数值。此外,在所述变频压缩机以百分之七十五的能力运行且所述定频压缩机以满负荷运行的情况下,如果所述空调系统的换热能力还是不足以满足用户的换热需求,则所述控制器还能够控制所述变频压缩机也以满负荷运行,以便最大程度地提升所述空调系统的换热能力。It should be noted that although the second preset demand percentage described in this preferred embodiment is 10%, it is obvious that the technical personnel can also set the specific second preset demand percentage by themselves according to the actual use demand. numerical value. In addition, under the condition that the inverter compressor is running at 75% capacity and the fixed-frequency compressor is running at full load, if the heat exchange capacity of the air conditioning system is still insufficient to meet the user's heat exchange demand, the controller can also control the inverter compressor to run at full load, so as to maximize the heat exchange capacity of the air conditioning system.

最后需要说明的是,上述实施例均是本发明的优选实施方案,并不作为对本发明保护范围的限制。本领域技术人员在实际使用本发明时,可以根据需要适当添加或删减一部分步骤,或者调换不同步骤之间的顺序。这种改变并没有超出本发明的基本原理,属于本发明的保护范围。Finally, it should be noted that the above-mentioned embodiments are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. When those skilled in the art actually use the present invention, some steps may be appropriately added or deleted as required, or the order of different steps may be exchanged. Such changes do not go beyond the basic principles of the present invention, and belong to the protection scope of the present invention.

至此,已经结合附图描述了本发明的优选实施方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。So far, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (6)

1. A compressor control method for an air conditioning system, wherein the air conditioning system comprises a fixed-frequency compressor and an inverter compressor which are connected in parallel, the compressor control method comprising:
detecting the actual capacity percentage of the inverter compressor under the condition that the inverter compressor operates alone;
when the actual capacity percentage of the variable-frequency compressor reaches a first preset variable-frequency capacity percentage, acquiring the actual load demand percentage of the compressor of the air conditioning system;
selectively operating the fixed-frequency compressor according to different capacity percentages according to the actual load demand percentage of the compressor of the air conditioning system;
the actual load demand percentage of a compressor of the air-conditioning system is equal to the difference value between the actual water temperature and the target water temperature of the air-conditioning system divided by the starting temperature difference of the compressor; and/or
The actual capacity percentage of the inverter compressor is equal to a first frequency conversion coefficient multiplied by the current evaporation temperature of the inverter compressor plus a second frequency conversion coefficient multiplied by the current condensation temperature of the inverter compressor plus a third frequency conversion coefficient multiplied by the current operating current of the inverter compressor; wherein the first, second and third frequency conversion coefficients are determined by a model of the inverter compressor; and/or
The actual capacity percentage of the fixed-frequency compressor is equal to a first fixed-frequency coefficient multiplied by the current evaporation temperature of the fixed-frequency compressor plus a second fixed-frequency coefficient multiplied by the current condensation temperature of the fixed-frequency compressor plus a third fixed-frequency coefficient multiplied by the current operation current of the fixed-frequency compressor; wherein the first fixed frequency coefficient, the second fixed frequency coefficient and the third fixed frequency coefficient are determined by the model of the fixed frequency compressor;
the step of selectively operating the fixed-frequency compressor at different capacity percentages based on the percentage of actual load demand of the compressor of the air conditioning system comprises:
comparing the actual load demand percentage of the compressor of the air conditioning system with a first preset demand percentage;
if the actual load demand percentage of the compressor of the air conditioning system is greater than or equal to the first preset demand percentage, enabling the fixed-frequency compressor to operate at a first preset frequency capacity percentage;
after the step of operating the fixed frequency compressor at the first preset frequency capacity percentage, the compressor control method further comprises:
acquiring the actual load demand percentage of the compressor of the air conditioning system again;
comparing the obtained actual load demand percentage of the compressor of the air conditioning system with the first preset demand percentage;
if the actual load demand percentage of the compressor of the air conditioning system is still greater than or equal to the first preset demand percentage, increasing the actual capacity percentage of the fixed-frequency compressor and repeatedly executing the obtaining and comparing steps until the actual capacity percentage of the fixed-frequency compressor is increased to a second preset capacity percentage; and/or
If the actual load demand percentage of the compressor of the air conditioning system is smaller than the first preset demand percentage, stopping the fixed-frequency compressor;
after the actual capacity percentage of the fixed-frequency compressor is increased to the second preset frequency capacity percentage, the compressor control method further comprises:
acquiring the actual load demand percentage of the compressor of the air conditioning system again;
comparing the actual compressor load demand percentage of the air conditioning system obtained again with the first preset demand percentage;
if the actual load demand percentage of the compressor of the air conditioning system obtained again is still larger than or equal to the first preset demand percentage, the actual capacity percentage of the inverter compressor is increased to a second preset inverter capacity percentage; and/or
And if the actual load demand percentage of the compressor of the air conditioning system is smaller than the first preset demand percentage, stopping the fixed-frequency compressor.
2. The compressor control method according to claim 1, wherein after the step of "increasing the actual capacity percentage of the inverter compressor to a second preset inverter capacity percentage", the compressor control method further comprises:
further acquiring the actual load demand percentage of a compressor of the air conditioning system;
comparing the further acquired actual load demand percentage of the compressor of the air conditioning system with a second preset demand percentage;
and selectively controlling the fixed-frequency compressor and the variable-frequency compressor to work cooperatively according to the comparison result.
3. The compressor control method of claim 2, wherein the step of selectively controlling the fixed frequency compressor and the inverter compressor to cooperate according to the comparison result comprises:
if the further acquired actual load demand percentage of the compressor of the air conditioning system is larger than or equal to the second preset demand percentage, enabling the fixed-frequency compressor to run at full load; and/or
And if the further acquired actual load demand percentage of the compressor of the air conditioning system is smaller than the second preset demand percentage, enabling the fixed-frequency compressor and the variable-frequency compressor to operate at the current capacity percentage.
4. The compressor control method according to any one of claims 1 to 3, wherein the first preset percent variable frequency capacity is 50%.
5. The compressor control method according to any one of claims 1 to 3, wherein the first preset demand percentage is 50%; and/or
The first predetermined percentage of frequency capability is 25%.
6. A compressor control method according to claim 2 or 3, characterized in that said second preset frequency capacity percentage is 75%; and/or
The second preset percent variable frequency capability is 75%; and/or
The second predetermined percentage of frequency capability is 10%.
CN201910616012.XA 2019-07-09 2019-07-09 Air conditioning system and compressor control method thereof Active CN112212471B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910616012.XA CN112212471B (en) 2019-07-09 2019-07-09 Air conditioning system and compressor control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910616012.XA CN112212471B (en) 2019-07-09 2019-07-09 Air conditioning system and compressor control method thereof

Publications (2)

Publication Number Publication Date
CN112212471A CN112212471A (en) 2021-01-12
CN112212471B true CN112212471B (en) 2022-09-16

Family

ID=74048428

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910616012.XA Active CN112212471B (en) 2019-07-09 2019-07-09 Air conditioning system and compressor control method thereof

Country Status (1)

Country Link
CN (1) CN112212471B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113959214B (en) * 2021-09-09 2023-05-26 青岛海尔空调电子有限公司 Tobacco dryer, operation control method and system thereof, and readable storage medium
CN115451600B (en) * 2022-09-21 2024-01-23 孚莱美科(江苏)环境科技有限公司 Combined air-cooled module unit and energy control method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5440891A (en) * 1994-01-26 1995-08-15 Hindmon, Jr.; James O. Fuzzy logic based controller for cooling and refrigerating systems
CN1614325A (en) * 2003-11-04 2005-05-11 Lg电子株式会社 Method for controlling operation of air-conditioner
CN101876475A (en) * 2010-05-28 2010-11-03 深圳和而泰智能控制股份有限公司 Method and system for controlling central air-conditioning
CN103604241A (en) * 2013-11-15 2014-02-26 Tcl空调器(中山)有限公司 Air conditioner and method for controlling same
CN107543344A (en) * 2016-06-27 2018-01-05 浙江盾安机电科技有限公司 The control system and control method of convertible frequency air-conditioner
CN109237708A (en) * 2018-08-28 2019-01-18 青岛海尔空调电子有限公司 Control method for air-conditioner set
CN109237709A (en) * 2018-08-31 2019-01-18 青岛海尔空调电子有限公司 A kind of multi-connected machine control method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5440891A (en) * 1994-01-26 1995-08-15 Hindmon, Jr.; James O. Fuzzy logic based controller for cooling and refrigerating systems
CN1614325A (en) * 2003-11-04 2005-05-11 Lg电子株式会社 Method for controlling operation of air-conditioner
CN101876475A (en) * 2010-05-28 2010-11-03 深圳和而泰智能控制股份有限公司 Method and system for controlling central air-conditioning
CN103604241A (en) * 2013-11-15 2014-02-26 Tcl空调器(中山)有限公司 Air conditioner and method for controlling same
CN107543344A (en) * 2016-06-27 2018-01-05 浙江盾安机电科技有限公司 The control system and control method of convertible frequency air-conditioner
CN109237708A (en) * 2018-08-28 2019-01-18 青岛海尔空调电子有限公司 Control method for air-conditioner set
CN109237709A (en) * 2018-08-31 2019-01-18 青岛海尔空调电子有限公司 A kind of multi-connected machine control method

Also Published As

Publication number Publication date
CN112212471A (en) 2021-01-12

Similar Documents

Publication Publication Date Title
CN108375175B (en) air conditioning system control method and device
CN104180563B (en) Oil return method for heating of multi-split air conditioning system
CN109357440B (en) A kind of multi-connected machine heating method for controlling oil return and multi-gang air-conditioner device
CN108151250B (en) Variable frequency air conditioner control method and device
WO2015032244A1 (en) Method for controlling multi-split air conditioner, and system for controlling multi-split air conditioner
CN107255306B (en) Combined variable frequency air conditioner and control method thereof
CN104654525A (en) Air conditioner host increasing and decreasing control method and device and air conditioner system
CN112212471B (en) Air conditioning system and compressor control method thereof
CN108413586A (en) The method for noise reduction control and multi-connected machine of multi-connected machine
CN115325684B (en) A multi-connected cooling control method, device, multi-connected and readable storage medium
CN112361532A (en) Dust removal method and device for outdoor unit of household air conditioner
CN110749072A (en) Air conditioner and outdoor unit defrosting control method thereof
CN108692426A (en) Air conditioner defrosting control method
CN113432354A (en) Air source heat pump control method and device, air source heat pump and storage medium
CN106766449B (en) A kind of compressor protection method when air-conditioning heating high temperature and pressure
CN110793151A (en) A multi-line refrigerant control method, device, air conditioner and storage medium
CN112325457A (en) A control method and control system for combined operation of multi-connection and composite fresh air
CN113237258B (en) Air-conditioning unit and its defrosting control method
JP5447627B1 (en) Heat source system controller
CN206281240U (en) A kind of twin-tub transfiguration air-conditioning system
CN118757945A (en) Energy-saving control method and system for air source heat pump
CN110017563B (en) Dehumidification control method for double-cold-source fresh air unit
CN114992892B (en) Cascade heat pump system and control method thereof
WO2023005570A1 (en) Silence control method for air conditioner
CN115307286B (en) Air conditioner control method, device, air conditioner and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant