CN205783578U - Have and remotely control the air-conditioner that operation troubles judges - Google Patents
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Abstract
本实用新型涉及一种具有远程控制运行故障判断的空调器，特点是包括压缩机、室外机风机、室外换热器、节流装置、室内换热器、室内过滤器、室内机风机、控制系统、室内换热器入口温度传感器、室内换热器出口温度传感器、室内回风温度传感器也即房间温度传感器、室内出风温度传感器、室外机换热器入口温度传感器、室外机换热器出口温度传感器、室外进风温度传感器也即环境温度传感器、室外出风温度传感器及用于制冷与制热运行转换的四通阀。其优点为：更早的确定空调器故障，更好的满足用户使用要求和实现空调器运行节能，故障判断简单实用，故障判断准确。
The utility model relates to an air conditioner with remote control operation fault judgment, which is characterized in that it includes a compressor, an outdoor unit fan, an outdoor heat exchanger, a throttling device, an indoor heat exchanger, an indoor filter, an indoor unit fan, and a control system , indoor heat exchanger inlet temperature sensor, indoor heat exchanger outlet temperature sensor, indoor return air temperature sensor is also the room temperature sensor, indoor air outlet temperature sensor, outdoor heat exchanger inlet temperature sensor, outdoor heat exchanger outlet temperature The sensor, the outdoor air inlet temperature sensor is also the ambient temperature sensor, the outdoor air outlet temperature sensor and the four-way valve for switching between cooling and heating operations. The utility model has the advantages of determining the failure of the air conditioner earlier, better meeting user requirements and realizing energy saving in the operation of the air conditioner, simple and practical fault judgment, and accurate fault judgment.
Description
技术领域technical field
本实用新型涉及一种具有远程控制运行故障判断的空调器。The utility model relates to an air conditioner with remote control operation fault judgment.
背景技术Background technique
我国居民和公共场所空调器的普及率已非常高，与此带来的空调器的故障也越来越多。虽然一般空调器都设有常规故障检测并通过故障代码显示告知使用者，但绝大多数使用者对故障代码所代表的故障原因不了解，故障原因不能及时排除，给用户使用带来诸多问题。针对上述问题，有些空调器生产企业开发了基于互联网技术的远程控制空调器，通过互联网技术，空调器故障能及时反馈给用户和维修人员，在维修人员的指导下，用户可以自行解决简单故障，提高了维修效率。但目前存在的问题是空调器厂家在空调器中内置的故障诊断系统判断的精确度不高；另外，由于空调器故障多是综合故障，判断的准确度不高。如以空调器制冷剂泄漏故障判断为例，一般以开机后几分钟室内机盘管温度能否达到规定值作为判断依据，考虑到空调器运行参数与空调器所处室内温度及室外环境温度等诸多因素有关，为减少误判，一般是以制冷剂泄漏20-30%呈现的现象作为故障判断标准，这样空调器制冷、制热性能已下降很多，空调器能耗会增加30%以上。The penetration rate of air conditioners in my country's residents and public places is very high, and the breakdown of air conditioners caused by this is also increasing. Although general air conditioners are equipped with routine fault detection and inform users through fault code display, most users do not understand the cause of the fault represented by the fault code, and the cause of the fault cannot be eliminated in time, which brings many problems to the user. In response to the above problems, some air conditioner manufacturers have developed remote control air conditioners based on Internet technology. Through Internet technology, air conditioner failures can be fed back to users and maintenance personnel in time. Under the guidance of maintenance personnel, users can solve simple faults by themselves. Improve maintenance efficiency. But the current problem is that the accuracy of the fault diagnosis system built in the air conditioner by the air conditioner manufacturer is not high; in addition, because the air conditioner faults are mostly comprehensive faults, the judgment accuracy is not high. For example, taking the judgment of the refrigerant leakage fault of the air conditioner as an example, it is generally based on whether the temperature of the indoor unit coil can reach the specified value within a few minutes after starting up, taking into account the operating parameters of the air conditioner, the indoor temperature and the outdoor ambient temperature of the air conditioner, etc. Many factors are related. In order to reduce misjudgment, the phenomenon of refrigerant leakage of 20-30% is generally used as the fault judgment standard. In this way, the cooling and heating performance of the air conditioner has dropped a lot, and the energy consumption of the air conditioner will increase by more than 30%.
发明内容Contents of the invention
本实用新型的目的是克服现有技术的不足而提供一种具有远程控制运行故障判断的空调器，能对制冷剂泄漏、室外机换热器脏、室外机风机电容衰减、室内机过滤网脏及室内机风机电容衰减五种故障进行判断，用户和维修人员通过互联网技术随时了解空调器运行参数，维修人员可通过互联网技术对空调器进行远程控制，通过改变空调器运行状态，对故障进行二次判断，及早准确发现故障。The purpose of this utility model is to overcome the deficiencies of the prior art and provide an air conditioner with remote control operation fault judgment, which can prevent refrigerant leakage, outdoor unit heat exchanger dirty, outdoor unit fan capacitance attenuation, indoor unit filter net dirty The user and maintenance personnel can know the operating parameters of the air conditioner at any time through the Internet technology. The maintenance personnel can remotely control the air conditioner through the Internet technology. By changing the operating status of the air conditioner, the fault can be analyzed Second judgment, early and accurate detection of faults.
为了达到上述目的，本实用新型的一种技术方案是这样实现的，其是一种具有远程控制运行故障判断的空调器，其特征在于包括压缩机、室外机风机、室外换热器、节流装置、室内换热器、室内过滤器、室内机风机、控制系统、室内换热器入口温度传感器、室内换热器出口温度传感器、室内回风温度传感器也即房间温度传感器、室内出风温度传感器、室外机换热器入口温度传感器、室外机换热器出口温度传感器、室外进风温度传感器也即环境温度传感器、室外出风温度传感器及用于制冷与制热运行转换的四通阀；其中In order to achieve the above purpose, a technical solution of the utility model is achieved in this way. It is an air conditioner with remote control operation fault judgment, which is characterized in that it includes a compressor, an outdoor fan, an outdoor heat exchanger, a throttling Device, indoor heat exchanger, indoor filter, indoor unit fan, control system, indoor heat exchanger inlet temperature sensor, indoor heat exchanger outlet temperature sensor, indoor return air temperature sensor, also known as room temperature sensor, indoor air outlet temperature sensor , outdoor unit heat exchanger inlet temperature sensor, outdoor unit heat exchanger outlet temperature sensor, outdoor air inlet temperature sensor is the ambient temperature sensor, outdoor air outlet temperature sensor and a four-way valve for switching between cooling and heating operations;
所述室外换热器、节流装置及室内换热器依次串联连通，所述四通阀的第一输入输出口a与室外换热器的入口连通，四通阀的出口b与压缩机的入气口连通，四通阀的入口与压缩机的排气口连通，四通阀的第二输入输出口c与室内换热器的出口连通；The outdoor heat exchanger, throttling device and indoor heat exchanger are sequentially connected in series, the first input and output port a of the four-way valve is connected with the inlet of the outdoor heat exchanger, and the outlet b of the four-way valve is connected with the compressor. The air inlet is connected, the inlet of the four-way valve is connected with the exhaust port of the compressor, and the second input and output port c of the four-way valve is connected with the outlet of the indoor heat exchanger;
所述室内换热器入口温度传感器检测室内换热器入口的第一室内制冷剂温度T1，室内换热器出口温度传感器检测室内换热器出口的第二室内制冷剂温度T2，室内回风温度传感器也即房间温度传感器检测室内换热器的空气侧进风温度即室内温度T3，室内出风温度传感器检测室内换热器的室内空气侧出风温度T4，室外机换热器入口温度传感器检测室外换热器入口的第一室外制冷剂温度T5，室外机换热器出口温度传感器检测室外换热器出口的第二室外制冷剂温度T6，室外进风温度传感器也即环境温度传感器检测室外环境温度T7，室外出风温度传感器检测室外换热器的室外空气侧出风温度T8；The indoor heat exchanger inlet temperature sensor detects the first indoor refrigerant temperature T1 at the indoor heat exchanger inlet, the indoor heat exchanger outlet temperature sensor detects the second indoor refrigerant temperature T2 at the indoor heat exchanger outlet, and the indoor return air temperature The sensor is the room temperature sensor to detect the air side inlet temperature of the indoor heat exchanger, that is, the indoor temperature T3, the indoor outlet temperature sensor to detect the indoor air side outlet temperature T4 of the indoor heat exchanger, and the outdoor heat exchanger inlet temperature sensor to detect The first outdoor refrigerant temperature T5 at the inlet of the outdoor heat exchanger, the temperature sensor at the outlet of the outdoor heat exchanger detects the second outdoor refrigerant temperature T6 at the outlet of the outdoor heat exchanger, and the outdoor air inlet temperature sensor, also known as the ambient temperature sensor, detects the outdoor environment Temperature T7, the outdoor air outlet temperature sensor detects the outlet air temperature T8 of the outdoor air side of the outdoor heat exchanger;
所述控制系统分别接收第一室内制冷剂温度T1、第二室内制冷剂温度T2、室内温度T3、室内空气侧出风温度T4、第一室外制冷剂温度T5、第二室外制冷剂温度T6、室外环境温度T7及室外空气侧出风温度T8信号控制室外机风机、室内机风机及四通阀的工作并进行运行故障的判断。The control system respectively receives the first indoor refrigerant temperature T1, the second indoor refrigerant temperature T2, the indoor temperature T3, the indoor air side outlet air temperature T4, the first outdoor refrigerant temperature T5, the second outdoor refrigerant temperature T6, The outdoor ambient temperature T7 and the outdoor air side outlet air temperature T8 signals control the work of the outdoor unit fan, the indoor unit fan and the four-way valve and judge the operation failure.
本实用新型与现有技术相比，具有如下优点：Compared with the prior art, the utility model has the following advantages:
（1）更早的确定空调器故障，更好的满足用户使用要求和实现空调器运行节能；(1) Identify air conditioner faults earlier, better meet user requirements and realize energy saving in air conditioner operation;
（2）故障判断简单实用，故障判断准确。(2) The fault judgment is simple and practical, and the fault judgment is accurate.
附图说明Description of drawings
图1是本实用新型实施的冷暖型空调器制冷运行时结构原理图；Fig. 1 is the schematic structural diagram of the heating and cooling type air conditioner during cooling operation of the utility model;
图2是本实用新型实施的冷暖型空调器制热运行时结构原理图。Fig. 2 is a structural principle diagram of the cooling and heating air conditioner implemented in the utility model during heating operation.
具体实施方式detailed description
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.
如图1及图2所示，其是一种具有远程控制运行故障判断的空调器，包括包括压缩机1、室外机风机2、室外换热器3、节流装置4、室内换热器5、室内过滤器6、室内机风机7、控制系统8、室内换热器入口温度传感器9、室内换热器出口温度传感器10、室内回风温度传感器也即房间温度传感器11、室内出风温度传感器12、室外机换热器入口温度传感器13、室外机换热器出口温度传感器14、室外进风温度传感器也即环境温度传感器15、室外出风温度传感器16及用于制冷与制热运行转换的四通阀17；As shown in Figure 1 and Figure 2, it is an air conditioner with remote control operation fault judgment, including a compressor 1, an outdoor fan 2, an outdoor heat exchanger 3, a throttling device 4, and an indoor heat exchanger 5 , Indoor filter 6, Indoor unit fan 7, Control system 8, Indoor heat exchanger inlet temperature sensor 9, Indoor heat exchanger outlet temperature sensor 10, Indoor return air temperature sensor is room temperature sensor 11, Indoor outlet air temperature sensor 12. Outdoor unit heat exchanger inlet temperature sensor 13, outdoor unit heat exchanger outlet temperature sensor 14, outdoor air inlet temperature sensor (i.e., ambient temperature sensor 15), outdoor air outlet temperature sensor 16, and switches for cooling and heating operations Four-way valve 17;
所述室外换热器3、节流装置4及室内换热器5依次串联连通，所述四通阀17的第一输入输出口a与室外换热器3的入口连通，四通阀17的出口b与压缩机1的入气口连通，四通阀17的入口与压缩机1的排气口连通，四通阀17的第二输入输出口c与室内换热器5的出口连通；所述室内换热器入口温度传感器9检测室内换热器5入口的第一室内制冷剂温度T1，室内换热器出口温度传感器10检测室内换热器5出口的第二室内制冷剂温度T2，室内回风温度传感器也即房间温度传感器11检测室内换热器5的空气侧进风温度即室内温度T3，室内出风温度传感器12检测室内换热器5的室内空气侧出风温度T4，室外机换热器入口温度传感器13检测室外换热器3入口的第一室外制冷剂温度T5，室外机换热器出口温度传感器14检测室外换热器3出口的第二室外制冷剂温度T6，室外进风温度传感器也即环境温度传感器15检测室外环境温度T7，室外出风温度传感器16检测室外换热器3的室外空气侧出风温度T8；The outdoor heat exchanger 3 , the throttling device 4 and the indoor heat exchanger 5 are sequentially connected in series, the first input and output port a of the four-way valve 17 is connected with the inlet of the outdoor heat exchanger 3 , and the four-way valve 17 is connected in series. The outlet b is communicated with the air inlet of the compressor 1, the inlet of the four-way valve 17 is communicated with the exhaust port of the compressor 1, and the second input and output port c of the four-way valve 17 is communicated with the outlet of the indoor heat exchanger 5; The indoor heat exchanger inlet temperature sensor 9 detects the first indoor refrigerant temperature T1 at the inlet of the indoor heat exchanger 5, and the indoor heat exchanger outlet temperature sensor 10 detects the second indoor refrigerant temperature T2 at the outlet of the indoor heat exchanger 5. The air temperature sensor, that is, the room temperature sensor 11 detects the air inlet temperature of the indoor heat exchanger 5, that is, the indoor temperature T3, and the indoor air outlet temperature sensor 12 detects the indoor air side outlet air temperature T4 of the indoor heat exchanger 5, and the outdoor unit Heater inlet temperature sensor 13 detects the first outdoor refrigerant temperature T5 at the inlet of outdoor heat exchanger 3, outdoor unit heat exchanger outlet temperature sensor 14 detects the second outdoor refrigerant temperature T6 at the outlet of outdoor heat exchanger 3, and the outdoor air intake The temperature sensor, that is, the ambient temperature sensor 15 detects the outdoor ambient temperature T7, and the outdoor air outlet temperature sensor 16 detects the outlet air temperature T8 of the outdoor air side of the outdoor heat exchanger 3;
所述室外机风机2帮助室外换热器3进行热交换，所述室内机风机7将室内换热器5的冷气或热气吹出进入室内，所述室内过滤器6位于室内换热器5的出风口处；The outdoor unit fan 2 helps the outdoor heat exchanger 3 to perform heat exchange, the indoor unit fan 7 blows cold or hot air from the indoor heat exchanger 5 into the room, and the indoor filter 6 is located at the outlet of the indoor heat exchanger 5 At the outlet;
所述控制系统8分别接收第一室内制冷剂温度T1、第二室内制冷剂温度T2、室内温度T3、室内空气侧出风温度T4、第一室外制冷剂温度T5、第二室外制冷剂温度T6、室外环境温度T7及室外空气侧出风温度T8信号控制室外机风机2、室内机风机7及四通阀17的工作并进行运行故障的判断。The control system 8 receives the first indoor refrigerant temperature T1, the second indoor refrigerant temperature T2, the indoor temperature T3, the indoor air side outlet air temperature T4, the first outdoor refrigerant temperature T5, and the second outdoor refrigerant temperature T6. , the outdoor ambient temperature T7 and the outdoor air side outlet temperature T8 signals to control the work of the outdoor unit fan 2, the indoor unit fan 7 and the four-way valve 17 and to judge the operation failure.
当空调器制冷时，如图1所示，所述四通阀17的入口与四通阀17的第一输入输出口a连通，四通阀17的出口b与四通阀9的第二输入输出口c连通；When the air conditioner is cooling, as shown in Figure 1, the inlet of the four-way valve 17 communicates with the first input and output port a of the four-way valve 17, and the outlet b of the four-way valve 17 communicates with the second input port a of the four-way valve 9. The output port c is connected;
当空调器制热时，如图2所示，所述四通阀17的入口与四通阀17的第二输入输出口c连通，四通阀17的第一输入输出口a与四通阀17的出口b与连通。When the air conditioner is heating, as shown in Figure 2, the inlet of the four-way valve 17 communicates with the second input and output port c of the four-way valve 17, and the first input and output port a of the four-way valve 17 communicates with the four-way valve. Exit b of 17 communicates with .
控制系统8运行故障判断如下：Control system 8 operation fault judgment is as follows:
（一）通过实验，获得空调器制冷剂标准充注量时，在不同室内温度T3、不同室外环境温度T7以及室内机风机7在高、低两档风量下，空调器制冷、制热运行时，第一室内制冷剂温度T1、第二室内制冷剂温度T2、室内空气侧出风温度T4、第一室外制冷剂温度T5、第二室外制冷剂温度T6及室外空气侧出风温度T8的数据；(1) Through experiments, when the air conditioner refrigerant standard charging amount is obtained, under different indoor temperatures T3, different outdoor ambient temperatures T7, and indoor fan 7 at high and low levels of air volume, when the air conditioner is running in cooling or heating , the data of the first indoor refrigerant temperature T1, the second indoor refrigerant temperature T2, the indoor air side outlet air temperature T4, the first outdoor refrigerant temperature T5, the second outdoor refrigerant temperature T6 and the outdoor air side outlet air temperature T8 ;
（二）通过实验，获得空调器制冷剂充注量为标准充注量95%时，在不同室内温度T3、不同室外环境温度T7以及室内机风机7在高、低两档风量下，空调器制冷、制热运行时，第一室内制冷剂温度T1、第二室内制冷剂温度T2、室内空气侧出风温度T4、第一室外制冷剂温度T5、第二室外制冷剂温度T6及室外空气侧出风温度T8的数据；(2) Through experiments, when the refrigerant charging amount of the air conditioner is 95% of the standard charging amount, at different indoor temperatures T3, different outdoor ambient temperatures T7 and indoor unit fan 7 at high and low levels of air volume, the air conditioner During cooling and heating operation, the first indoor refrigerant temperature T1, the second indoor refrigerant temperature T2, the indoor air side outlet air temperature T4, the first outdoor refrigerant temperature T5, the second outdoor refrigerant temperature T6 and the outdoor air side The data of the outlet air temperature T8;
（三）远程控制空调器的控制系统8具有常规空调器运行时故障检测报警功能，且空调器每累计运行一段时间（一般为一周），控制系统8对空调器进行一次精确运行故障判断，精确运行故障判断开始时，控制系统8自动将室内机风机7的风量调到高风量状态；控制系统8获取空调器中第一室内制冷剂温度T1、第二室内制冷剂温度T2、室内温度T3、室内空气侧出风温度T4、第一室外制冷剂温度T5、第二室外制冷剂温度T6、室外环境温度T7及室外空气侧出风温度T8的温度值，由控制系统8根据内置空调器实验数据库进行初步判断，并将可能出现的故障及时通过无线网络传输给维修人员，维修人员根据上传数据及可能出现的故障远程控制空调器改变运行模式，获取新的运行数据，进行二次判断，对制冷空调器分制冷运行分别判断；(3) The control system 8 of the remote control air conditioner has the function of fault detection and alarm during the operation of conventional air conditioners, and every time the air conditioner runs for a period of time (generally one week), the control system 8 performs an accurate operation fault judgment on the air conditioner, accurately When the operation failure judgment starts, the control system 8 automatically adjusts the air volume of the indoor unit fan 7 to a high air volume state; the control system 8 obtains the first indoor refrigerant temperature T1, the second indoor refrigerant temperature T2, and the indoor temperature T3, The temperature values of the indoor air side outlet temperature T4, the first outdoor refrigerant temperature T5, the second outdoor refrigerant temperature T6, the outdoor ambient temperature T7 and the outdoor air side outlet temperature T8 are determined by the control system 8 according to the built-in air conditioner experimental database Make a preliminary judgment, and transmit possible faults to the maintenance personnel through the wireless network in a timely manner. The maintenance personnel can remotely control the air conditioner to change the operating mode according to the uploaded data and possible faults, obtain new operating data, and make a secondary judgment. The air conditioner is judged separately according to the cooling operation;
（四）空调器制冷运行时五种典型运行故障判断步骤如下：(4) Judgment steps for five typical operating faults of the air conditioner during cooling operation are as follows:
（a）制冷剂泄漏(a) Refrigerant leakage
控制系统8检测到室内温度T3及室内机换热器5的制冷剂进出口温差ΔT1即ΔT1=T1-T2，对应此时室内温度T3，将检测得到的温差ΔT1与室内温度T3、制冷剂充注量为标准充注量95%及室内机风机7的风量位于高档位时所对应的室内机换热器5的制冷剂进出口温差ΔT11进行比较，如ΔT1<ΔT11，控制系统初步判断制冷剂泄漏，否则表明制冷剂泄漏未达到故障标准，可不考虑维修；The control system 8 detects the indoor temperature T3 and the temperature difference ΔT1 between the inlet and outlet of the refrigerant of the indoor unit heat exchanger 5, that is, ΔT1=T1-T2. When the injection volume is 95% of the standard charge volume and the air volume of the indoor unit fan 7 is at the high level, compare the temperature difference between the inlet and outlet of the refrigerant ΔT11 of the indoor unit heat exchanger 5, if ΔT1<ΔT11, the control system initially judges the refrigerant Leakage, otherwise it means that the refrigerant leakage does not reach the failure standard, and maintenance may not be considered;
2）维修人员获取上述数据后，维修人员远程控制控制系统8改变室内机风机7的风量，将风量从高档切换到低档，获取低档风量时室内机换热器5的制冷剂进出口温差ΔT1d的数据，再与房间温度T3、制冷剂充注量为标准充注量95%、室内机风机7的风量位于低档时所对应的室内机换热器5的制冷剂进出口温差ΔT12进行比较，如ΔT1d<ΔT12，则判断空调器制冷剂泄漏，否则表明制冷剂泄漏未达到故障标准，可不考虑维修；2) After the maintenance personnel obtain the above data, the maintenance personnel remotely control the control system 8 to change the air volume of the indoor unit fan 7, and switch the air volume from high-grade to low-grade. The data is then compared with the temperature difference ΔT12 between the inlet and outlet of the indoor unit heat exchanger 5 corresponding to the room temperature T3, the refrigerant charge amount is 95% of the standard charge amount, and the air volume of the indoor unit fan 7 is at a low level, as shown in If ΔT1d<ΔT12, it is judged that the refrigerant of the air conditioner is leaking, otherwise it indicates that the refrigerant leakage has not reached the failure standard, and the maintenance is not considered;
（b）室内机过滤网脏或风机电容衰减(b) The filter of the indoor unit is dirty or the capacitance of the fan is attenuated
1）控制系统8检测室内温度T3、室外环境温度T7及室内机空气进出口温差ΔT2即ΔT2=T3-T4，将检测得到的实测温差ΔT2与控制系统8中实验得到的在室内温度T3及室外环境温度T7下的室内机空气进出口实验温差ΔT21进行比较，如高档风量温差比k1≥1.2，其中高档风量温差比k1=实测温差ΔT2/实验温差ΔT21，则初步判断室内机过滤网6脏或风机7电容衰减故障；1) The control system 8 detects the indoor temperature T3, the outdoor ambient temperature T7, and the temperature difference ΔT2 between the air inlet and outlet of the indoor unit, that is, ΔT2=T3-T4. Compare the experimental temperature difference ΔT21 of the air inlet and outlet of the indoor unit under the ambient temperature T7. If the high-grade air volume temperature difference ratio k1≥1.2, where the high-grade air volume temperature difference ratio k1=actually measured temperature difference ΔT2/experimental temperature difference ΔT21, it is preliminarily judged that the indoor unit filter 6 is dirty or Fan 7 capacitance attenuation failure;
2）维修人员获取上述数据后，维修人员远程控制控制系统8改变室内机风机7的风量，将风量从高档切换到低档，运行5min，获取低档风量时室内机空气进出口实测温差ΔT2d，将检测得到的实测温差ΔT2d与控制系统8中实验得到的在室内温度T3、室外环境温度T7下的室内机空气进出口实验温差ΔT22进行比较，如0.9≤低档风量温差比k2/高档风量温差比k1≤1.1，其中低档风量温差比k2=实测温差ΔT2d/实验温差ΔT22，可判断为过滤网6脏，如不在此范围，可判断为室内机风机7电容衰减；2) After the maintenance personnel obtain the above data, the maintenance personnel remotely control the control system 8 to change the air volume of the indoor unit fan 7, switch the air volume from high to low, and run for 5 minutes. The obtained measured temperature difference ΔT2d is compared with the experimental temperature difference ΔT22 of the air inlet and outlet of the indoor unit under the indoor temperature T3 and outdoor ambient temperature T7 obtained experimentally in the control system 8, such as 0.9≤low-grade air volume temperature difference ratio k2/high-grade air volume temperature difference ratio k1≤ 1.1, where the low-grade air volume temperature difference ratio k2=measured temperature difference ΔT2d/experimental temperature difference ΔT22, it can be judged that the filter screen 6 is dirty, if it is not in this range, it can be judged that the capacitance of the indoor unit fan 7 has decayed;
（c）室外机脏或室外风机电容衰减(c) The outdoor unit is dirty or the capacitance of the outdoor fan is attenuated
1）控制系统8检测室内温度T3、室外环境温度T7、第一室外制冷剂温度T5及第二室外制冷剂温度T6，将检测得到的第一室外制冷剂温度T5及第二室外制冷剂温度T6与实验得到的在室内温度T3、室外环境温度T7下的第一室外制冷剂温度T5及第二室外制冷剂温度T6进行比较，如T5、T6的实际值均大于对应的实验值2℃以上，则初步判断室外机3脏或室外风机2电容衰减故障；1) The control system 8 detects the indoor temperature T3, the outdoor ambient temperature T7, the first outdoor refrigerant temperature T5 and the second outdoor refrigerant temperature T6, and the detected first outdoor refrigerant temperature T5 and the second outdoor refrigerant temperature T6 Compared with the first outdoor refrigerant temperature T5 and the second outdoor refrigerant temperature T6 obtained from the experiment at the indoor temperature T3 and the outdoor ambient temperature T7, if the actual values of T5 and T6 are greater than the corresponding experimental values by more than 2°C, Then it is preliminarily judged that the outdoor unit 3 is dirty or the capacitance attenuation of the outdoor fan 2 is faulty;
2）控制系统8继续检测室外环境温度T7及室外空气侧出风温度T8，得到实际进出风温差ΔT3即ΔT3=T8-T7，将检测得到温差ΔT3与控制系统8中实验得到的在室内温度T3及室外环境温度T7下的室外机空气进出口温差ΔT31进行比较，如ΔT3-ΔT31≥2℃，可判断为室外机风机2电容衰减故障，否则判断为室外机3脏。2) The control system 8 continues to detect the outdoor ambient temperature T7 and the outdoor air side outlet temperature T8, and obtains the actual air inlet and outlet temperature difference ΔT3, that is, ΔT3=T8-T7, and the detected temperature difference ΔT3 and the indoor temperature T3 obtained experimentally in the control system 8 Compared with the temperature difference ΔT31 between the air inlet and outlet of the outdoor unit at the outdoor ambient temperature T7, if ΔT3-ΔT31≥2°C, it can be judged that the capacitor attenuation of the fan 2 of the outdoor unit is faulty, otherwise it can be judged that the outdoor unit 3 is dirty.
（五）空调器制热运行时的五种典型运行故障判断步骤如下：(5) The judgment steps for five typical operating faults during the heating operation of the air conditioner are as follows:
（a）制冷剂泄漏(a) Refrigerant leakage
1）控制系统8检测室内温度T3、室外环境温度T7、第二室内制冷剂温度T2及第一室内制冷剂温度T1，将检测得到的第二室内制冷剂温度T2及第一室内制冷剂温度T1与在室内温度T3、室外环境温度T7、制冷剂充注量为标准充注量95%下的第二室内制冷剂温度T2及第一室内制冷剂温度T1进行比较，如T2、T1的实际值均小于对应的实验值，则初步判断制冷剂泄漏故障；1) The control system 8 detects the indoor temperature T3, the outdoor ambient temperature T7, the second indoor refrigerant temperature T2 and the first indoor refrigerant temperature T1, and the detected second indoor refrigerant temperature T2 and the first indoor refrigerant temperature T1 Compare with the second indoor refrigerant temperature T2 and the first indoor refrigerant temperature T1 under the indoor temperature T3, outdoor ambient temperature T7, and refrigerant charging amount of 95% of the standard charging amount, such as the actual values of T2 and T1 are less than the corresponding experimental value, it is preliminarily judged that the refrigerant leakage fault;
2）维修人员获取上述数据后，维修人员远程控制控制系统8改变室内机风机7的风量，将风量从高档切换到低档，获取低档风量时室内机换热器5的第二室内制冷剂温度T2及第一室内制冷剂温度T1，将检测得到的第二室内制冷剂温度T2及第一室内制冷剂温度T1与在室内温度T3、室外环境温度T7、制冷剂充注量为标准充注量95%下的第二室内制冷剂温度T2及第一室内制冷剂温度T1进行比较，如的实际值均小于对应的实验值，则判断空调器制冷剂泄漏，否则表明制冷剂泄漏未达到故障标准，可不考虑维修；2) After the maintenance personnel obtain the above data, the maintenance personnel remotely control the control system 8 to change the air volume of the indoor fan 7, switch the air volume from high to low, and obtain the second indoor refrigerant temperature T2 of the indoor heat exchanger 5 when the low air volume is obtained. and the first indoor refrigerant temperature T1, and the detected second indoor refrigerant temperature T2 and the first indoor refrigerant temperature T1, the indoor temperature T3, the outdoor ambient temperature T7, and the refrigerant charging amount are the standard charging amount of 95 %, compare the second indoor refrigerant temperature T2 with the first indoor refrigerant temperature T1, if the actual values of both are lower than the corresponding experimental values, it is judged that the air conditioner refrigerant leaks, otherwise it indicates that the refrigerant leakage has not reached the fault standard, Maintenance may not be considered;
（b）室内机过滤网脏或风机电容衰减(b) The filter of the indoor unit is dirty or the capacitance of the fan is attenuated
1）控制系统（8）检测室内温度T3、室外环境温度T7及室内机空气出口、进口温差ΔT2即ΔT2=T4-T3，将检测得到温差ΔT2与控制系统8中实验得到的在室内温度T3、室外环境温度T7下的室内机空气出口、进口温差ΔT21进行比较，如高档风量温差比k1≥1.2，其中高档风量温差比k1=实测温差ΔT2/实验温差ΔT21，则初步判断室内机过滤网6脏或风机7电容衰减故障；1) The control system (8) detects the indoor temperature T3, the outdoor ambient temperature T7, and the air outlet and inlet temperature difference ΔT2 of the indoor unit, that is, ΔT2=T4-T3, and the detected temperature difference ΔT2 is compared with the indoor temperature T3, Compare the temperature difference ΔT21 between the air outlet and inlet of the indoor unit at the outdoor ambient temperature T7. If the high-grade air volume temperature difference ratio k1≥1.2, where the high-grade air volume temperature difference ratio k1=actually measured temperature difference ΔT2/experimental temperature difference ΔT21, it is preliminarily judged that the indoor unit filter is 6 dirty Or fan 7 capacitance attenuation failure;
2）维修人员获取上述数据后，维修人员远程控制控制系统8改变室内机风机7的风量，将风量从高档切换到低档，获取低档风量时室内机空气出口、进口温差ΔT2d，将检测得到的温差ΔT2d与控制系统8中实验得到的在室内温度T3、室外环境温度T7下的室内机空气出口、进口温差ΔT22进行比较，如0.9≤低档风量温差比k2/高档风量温差比k1≤1.1，其中低档风量温差比k2=实测温差ΔT2d/实验温差ΔT22，可判断为过滤网6脏，如不在此范围，可判断为室内机风机7电容衰减；2) After the maintenance personnel obtain the above data, the maintenance personnel remotely control the control system 8 to change the air volume of the indoor unit fan 7, and switch the air volume from high to low. ΔT2d is compared with the air outlet and inlet temperature difference ΔT22 of the indoor unit under the indoor temperature T3 and outdoor ambient temperature T7 obtained from the experiment in the control system 8, such as 0.9≤low-grade air volume temperature difference ratio k2/high-grade air volume temperature difference ratio k1≤1.1, where the low-grade air volume temperature difference ratio k1≤1.1 Air volume temperature difference ratio k2 = measured temperature difference ΔT2d/experimental temperature difference ΔT22, it can be judged that the filter 6 is dirty, if it is not in this range, it can be judged that the capacitance of the indoor unit fan 7 has decayed;
（c）室外机脏或室外风机电容衰减(c) The outdoor unit is dirty or the capacitance of the outdoor fan is attenuated
1）控制系统8检测室内温度T3、室外环境温度T7、第一室外制冷剂温度T5及第二室外制冷剂温度T6，将检测得到的第二室外制冷剂温度T6及第一室外制冷剂温度T5与实验得到的在室内温度T3、室外环境温度T7下的第一室外制冷剂温度T5及第二室外制冷剂温度T6进行比较，如T5、T6的实际值均比对应的实验值低2℃以上，则初步判断室外机3脏或室外风机2电容衰减故障；1) The control system 8 detects the indoor temperature T3, the outdoor ambient temperature T7, the first outdoor refrigerant temperature T5 and the second outdoor refrigerant temperature T6, and the detected second outdoor refrigerant temperature T6 and the first outdoor refrigerant temperature T5 Compared with the first outdoor refrigerant temperature T5 and the second outdoor refrigerant temperature T6 obtained in the experiment under the indoor temperature T3 and outdoor ambient temperature T7, for example, the actual values of T5 and T6 are lower than the corresponding experimental values by more than 2°C , it is preliminarily judged that the outdoor unit 3 is dirty or the capacitance attenuation of the outdoor fan 2 is faulty;
2）控制系统8继续检测室外环境温度T7及室外空气侧出风温度T8，得到实际进出风温差ΔT3即ΔT3=T7-T8，将检测得到温差ΔT3与控制系统8中实验得到的在室内温度T3、室外环境温度T7下的室外机空气进出口温差ΔT31进行比较，如ΔT3-ΔT31≥2℃，可判断为室外机风机2电容衰减故障，否则判断为室外机3脏。2) The control system 8 continues to detect the outdoor ambient temperature T7 and the outdoor air side outlet temperature T8, and obtains the actual air inlet and outlet temperature difference ΔT3, that is, ΔT3=T7-T8, and the detected temperature difference ΔT3 and the indoor temperature T3 obtained experimentally in the control system 8 1. Compare the air inlet and outlet temperature difference ΔT31 of the outdoor unit at the outdoor ambient temperature T7. If ΔT3-ΔT31≥2℃, it can be judged that the capacitance of the fan 2 of the outdoor unit is attenuated, otherwise it can be judged that the outdoor unit 3 is dirty.
尽管已经示出和描述了本实用新型的实施例，本领域的普通技术人员可以理解：在不脱离本实用新型的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换及变形，本实用新型的范围由权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and Modifications, the scope of the present invention is defined by the claims and their equivalents.
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| WO2019006798A1 (en) * | 2017-07-05 | 2019-01-10 | 瑞斯康微电子（深圳）有限公司 | Air conditioner refrigerant detecting device |
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| CN107367012A (en) * | 2017-06-06 | 2017-11-21 | 珠海格力电器股份有限公司 | High-temperature-resistant protection method, protection device and protection system for air conditioning system |
| WO2019006798A1 (en) * | 2017-07-05 | 2019-01-10 | 瑞斯康微电子（深圳）有限公司 | Air conditioner refrigerant detecting device |
| CN109114747A (en) * | 2018-08-03 | 2019-01-01 | 奥克斯空调股份有限公司 | A kind of lack of fluorine of air-conditioners detection method, detection system and air-conditioning |
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| CN110454908A (en) * | 2019-07-22 | 2019-11-15 | 海信（山东）空调有限公司 | A kind of air-conditioning system and control method |
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