CN102645327B - Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit - Google Patents
Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit Download PDFInfo
- Publication number
- CN102645327B CN102645327B CN201210095097.XA CN201210095097A CN102645327B CN 102645327 B CN102645327 B CN 102645327B CN 201210095097 A CN201210095097 A CN 201210095097A CN 102645327 B CN102645327 B CN 102645327B
- Authority
- CN
- China
- Prior art keywords
- temperature
- outdoor
- expansion valve
- electronic expansion
- outdoor unit
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004378 air conditioning Methods 0.000 title claims description 13
- 238000003466 welding Methods 0.000 title description 9
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000010257 thawing Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
本发明公开了一种多联式空调机组的外机电子膨胀阀是否焊堵的检测方法，它包括：a、在制热模式下运行室外机的压缩机（1）至少2分钟；b、检测并计算出吸气温度与室外温度之间的差值、室外换热器（2）的盘管中段温度与室外温度之间的差值；除霜温度与室外温度之间的差值；c、判断是否满足条件、、均小于或等于3且室外机低压压力开关（3）断开，如果满足条件，则确定外机电子膨胀阀（4）完全焊堵，检测过程终止，如果不满足条件，则进入下一步；d、继续运行该室外机的压缩机（1）至少4分钟；e、判断是否满足条件℃且室外机低压压力开关（3）断开，如果满足条件，则确定外机电子膨胀阀（4）部分焊堵。该检测方法快速、方便、准确。
The invention discloses a method for detecting whether the electronic expansion valve of the outdoor unit of a multi-connected air conditioner unit is welded and blocked, which includes: a. running the compressor (1) of the outdoor unit in the heating mode for at least 2 minutes; and calculate the suction temperature vs. outside temperature difference between , The coil mid-section temperature of the outdoor heat exchanger (2) vs. outside temperature difference between ;Defrost temperature vs. outside temperature difference between ; c. Judging whether the conditions are met , , Both are less than or equal to 3 and the low pressure switch (3) of the outdoor unit is disconnected. If the conditions are met, it is determined that the electronic expansion valve (4) of the outdoor unit is completely welded and blocked, and the detection process is terminated. If the conditions are not met, go to the next step; d . Continue to run the compressor (1) of the outdoor unit for at least 4 minutes; e. Determine whether the conditions are met ℃ and the low pressure switch (3) of the outdoor unit is disconnected. If the conditions are met, it is determined that the electronic expansion valve (4) of the outdoor unit is partially welded. The detection method is fast, convenient and accurate.
Description
技术领域technical field
本发明涉及多联式空调机组，具体讲是一种多联式空调机组的外机电子膨胀阀是否焊堵的检测方法。The invention relates to a multi-connected air-conditioning unit, in particular to a method for detecting whether an electronic expansion valve of an external unit of the multi-connected air-conditioning unit is welded and blocked.
背景技术Background technique
现有技术的多联式空调机组包括一个或多个室外机、多个相互并联的室内机以及连接各室内机和各室外机的两根冷媒流通总管。如果室外机为一个，该室外机通过两根冷媒流通总管与并联后的多个室内机连通；如果室外机为多个，则多个室外机并联，并联后的室外机通过两根冷媒流通总管与并联后的室内机连通。The multi-connected air conditioner unit in the prior art includes one or more outdoor units, a plurality of indoor units connected in parallel, and two refrigerant circulation main pipes connecting each indoor unit and each outdoor unit. If there is one outdoor unit, the outdoor unit is connected to multiple indoor units connected in parallel through two refrigerant circulation main pipes; if there are multiple outdoor units, multiple outdoor units are connected in parallel, and the parallel outdoor units pass through two refrigerant circulation main pipes Connect with the indoor unit connected in parallel.
每个室外机包括压缩机、油分离器、四通换向阀、室外换热器(制热模式时为蒸发器)、外机电子膨胀阀、储液器和气液分离器。压缩机出口与油分离器的一端连通，油分离器的另一端与四通换向阀的第一阀口连通，四通换向阀的第三阀口与两根冷媒流通总管中的一根冷媒管连通，两根冷媒流通总管中的另一根冷媒管与储液器的一端连通，储液器的另一端与外机电子膨胀阀的一端连通，外机电子膨胀阀的另一端与室外换热器的一端连通，室外换热器的另一端与四通换向阀的第二阀口连通，四通换向阀的第四阀口与气液分离器的一端连通，气液分离器的另一端与压缩机入口连通。制热模式时，四通换向阀的第一阀口与第三阀口连通，第二阀口与第四阀口连通，即冷媒沿着压缩机、室内换热器、室外换热器、压缩机这个路线循环。Each outdoor unit includes a compressor, an oil separator, a four-way reversing valve, an outdoor heat exchanger (evaporator in heating mode), an electronic expansion valve for the outdoor unit, a liquid receiver and a gas-liquid separator. The outlet of the compressor is connected with one end of the oil separator, the other end of the oil separator is connected with the first valve port of the four-way reversing valve, and the third valve port of the four-way reversing valve is connected with one of the two refrigerant circulation main pipes. The refrigerant pipe is connected, the other refrigerant pipe of the two refrigerant circulation main pipes is connected with one end of the liquid receiver, the other end of the liquid receiver is connected with one end of the electronic expansion valve of the external unit, and the other end of the electronic expansion valve of the external unit is connected with the outdoor One end of the heat exchanger is connected, the other end of the outdoor heat exchanger is connected with the second valve port of the four-way reversing valve, the fourth valve port of the four-way reversing valve is connected with one end of the gas-liquid separator, and the gas-liquid separator The other end communicates with the compressor inlet. In the heating mode, the first valve port of the four-way reversing valve is connected to the third valve port, and the second valve port is connected to the fourth valve port, that is, the refrigerant flows along the compressor, indoor heat exchanger, outdoor heat exchanger, The compressor loops this route.
每个室内机包括内机电子膨胀阀和室内换热器(制热模式时为冷凝器)，室内换热器的一端与内机电子膨胀阀的一端连通，内机电子膨胀阀的另一端与两根冷媒流通总管中的一根连通，室内换热器的另一端与两根冷媒流通总管中的另一根冷媒管连通。Each indoor unit includes an electronic expansion valve of the indoor unit and an indoor heat exchanger (condenser in heating mode). One end of the indoor heat exchanger communicates with one end of the electronic expansion valve of the indoor unit, and the other end of the electronic expansion valve of the indoor unit communicates with One of the two refrigerant circulation main pipes is communicated, and the other end of the indoor heat exchanger is communicated with the other refrigerant pipe of the two refrigerant circulation main pipes.
该多联式空调机组设有测量室外温度TO的第四温度传感器；每个室外机的压缩机入口处设有第一温度传感器，第一温度传感器用于测量压缩机入口处的温度即吸气温度T1；每个室外机的室外换热器的盘管中段设有第二温度传感器，第二温度传感器用于测量室外换热器的盘管中段温度T2；每个室外机的室外换热器的入口处设有第三温度传感器，第三温度传感器用于测量室外换热器的入口温度T3，该入口温度T3行业内习惯称之为除霜温度T3；每个室外机的靠近压缩机入口处的管道上设有室外机低压压力开关；上述的四个温度传感器以及室外机低压压力开关与空调的主控制器电连接。The multi-connected air-conditioning unit is provided with a fourth temperature sensor for measuring the outdoor temperature T O ; the compressor inlet of each outdoor unit is provided with a first temperature sensor, and the first temperature sensor is used to measure the temperature at the compressor inlet, that is, the suction air temperature T 1 ; the middle section of the coil of the outdoor heat exchanger of each outdoor unit is provided with a second temperature sensor, and the second temperature sensor is used to measure the temperature T 2 of the middle section of the coil of the outdoor heat exchanger; the outdoor temperature of each outdoor unit is There is a third temperature sensor at the inlet of the heat exchanger, and the third temperature sensor is used to measure the inlet temperature T3 of the outdoor heat exchanger, which is customarily called the defrosting temperature T3 in the industry; each outdoor unit The pipeline near the inlet of the compressor is provided with an outdoor unit low-pressure pressure switch; the above four temperature sensors and the outdoor unit low-pressure pressure switch are electrically connected to the main controller of the air conditioner.
多联式空调机组制热时，外机电子膨胀阀作为系统的节流设备，通过调节开度大小，精确控制制冷剂的流量，准确地控制温度。而外机电子膨胀阀是由人工焊接到机组的管道上的，且外机电子膨胀阀的进管和出管的内径不超过6mm，这样，难免会出现焊堵的状况，一旦出现焊堵的状况，就会导致外机电子膨胀阀的前端报高压故障、后端报低压故障。由于外机电子膨胀阀与系统管道是焊死的，根本无法直接检测是否焊堵，只能将别的故障原因逐一排查，如果都不是才最后确定焊堵。但造成空调报高压和报低压故障的原因有很多，如外机、内机的风机转速不足、换热器的盘管堵塞、换热器盘管表明沾灰使得换热量不足、换热器盘管末端的毛细管堵塞等，故每次焊堵导致报高压及低压故障时，技术人员往往要耗费大量的时间一一排查，才能最终找出、确定焊堵这一故障原因，故检测过程麻烦，费时费力。When the multi-connected air conditioner unit is heating, the electronic expansion valve of the external unit is used as the throttling device of the system. By adjusting the opening degree, the flow rate of the refrigerant is precisely controlled, and the temperature is accurately controlled. However, the electronic expansion valve of the external unit is manually welded to the pipeline of the unit, and the inner diameter of the inlet and outlet pipes of the electronic expansion valve of the external unit does not exceed 6mm. In this way, welding blockage will inevitably occur. In this case, the front end of the electronic expansion valve of the external unit will report a high pressure fault, and the rear end will report a low pressure fault. Since the electronic expansion valve of the external unit is welded to the system pipeline, it is impossible to directly detect whether there is welding blockage. We can only check other fault causes one by one, and finally determine the welding blockage if they are not. However, there are many reasons why the air conditioner reports high-voltage and low-voltage failures, such as insufficient fan speed of the external unit and internal unit, blockage of the coil of the heat exchanger, dust on the coil of the heat exchanger, which makes the heat exchange insufficient, and the heat exchanger The capillary at the end of the coil is blocked, etc. Therefore, every time a welding blockage causes a high-pressure or low-voltage fault, the technician often spends a lot of time checking one by one to finally find out and determine the cause of the welding blockage, so the detection process is cumbersome. ,Time-consuming.
发明内容Contents of the invention
本发明要解决的技术问题是，提供一种快速、方便、准确的多联式空调机组的外机电子膨胀阀是否焊堵的检测方法。The technical problem to be solved by the present invention is to provide a fast, convenient and accurate detection method for whether the electronic expansion valve of the external unit of the multi-connected air-conditioning unit is welded and blocked.
本发明的技术解决方案是，提供一种多联式空调机组的外机电子膨胀阀是否焊堵的检测方法，其具体步骤如下：The technical solution of the present invention is to provide a method for detecting whether the electronic expansion valve of the external unit of the multi-connected air conditioner unit is welded and blocked, and the specific steps are as follows:
a、将一个室外机的压缩机开机运行至少2分钟；a. Turn on the compressor of an outdoor unit for at least 2 minutes;
b、检测该室外机的吸气温度T1、室外换热器的盘管中段温度T2、除霜温度T3以及室外温度TO，将上述四个温度值传给空调主控制器，并由空调主控制器计算出吸气温度T1与室外温度TO之间的差值ΔT1、室外换热器的盘管中段温度T2与室外温度TO之间的差值ΔT2；除霜温度T3与室外温度TO之间的差值ΔT3；b. Detect the suction temperature T 1 of the outdoor unit, the temperature T 2 of the middle section of the coil of the outdoor heat exchanger, the defrosting temperature T 3 and the outdoor temperature T O , and transmit the above four temperature values to the main controller of the air conditioner, and The main controller of the air conditioner calculates the difference ΔT 1 between the suction temperature T 1 and the outdoor temperature T O , and the difference ΔT 2 between the coil mid-section temperature T 2 of the outdoor heat exchanger and the outdoor temperature T O ; The difference ΔT 3 between the frost temperature T 3 and the outdoor temperature T O ;
c、判断是否满足条件ΔT1、ΔT2、ΔT3均小于或等于3且室外机低压压力开关断开，如果满足条件，则确定外机电子膨胀阀完全焊堵，检测过程终止，如果不满足条件，则进入下一步；c. Determine whether the conditions ΔT 1 , ΔT 2 , ΔT 3 are all less than or equal to 3 and the low pressure switch of the outdoor unit is off. If the conditions are met, it is determined that the electronic expansion valve of the outdoor unit is completely welded and the detection process is terminated. If not conditions, go to the next step;
d、继续运行该室外机的压缩机至少4分钟；d. Continue to run the compressor of the outdoor unit for at least 4 minutes;
e、检测此时的除霜温度T3’并将结果传给空调主控制器，并由空调主控制器判断是否满足条件T3’≤-15℃且室外机低压压力开关断开，如果满足条件，则确定外机电子膨胀阀部分焊堵，如果不满足条件，则确定外机电子膨胀阀没有焊堵，检测过程结束。e. Detect the defrosting temperature T 3 ' at this time and send the result to the main controller of the air conditioner, and the main controller of the air conditioner judges whether the condition T 3 '≤-15°C is met and the low pressure switch of the outdoor unit is turned off. conditions, it is determined that the electronic expansion valve of the external unit is partially welded, and if the condition is not met, it is determined that the electronic expansion valve of the external unit has no welding blockage, and the inspection process ends.
该检测方法的原理为：一旦外机电子膨胀阀完全堵塞，而室外机的压缩机继续工作一段时间后如超过2分钟，就会把从外机电子膨胀阀后到压缩机入口前的一段管路中的制冷剂完全抽空，抽空后的管路的温度就会接近室外温度，故从这段抽空后的管路的三个不同位置测出来的三个温度值即T1、T2、T3与室外温度TO的温差均不会超过一定的范围即3℃，且由于外机电子膨胀阀堵塞，造成抽空后的管路压力剧降，导致室外机低压压力开关断开，故满足这两个条件，就可以确定外机电子膨胀阀完全关闭；而如果外机电子膨胀阀部分堵塞，则从外机电子膨胀阀后到压缩机入口前的管路不会被完全抽空，但由于电子膨胀阀内的管路被局部堵塞，制冷剂被大幅度节流，使得外机电子膨胀阀出口也就是室外换热器盘管进口处的温度骤降，电子膨胀阀部分堵塞后，压缩机运行一段时间，如不少于6分钟后，除霜温度会低于一定值如-15℃，且由于电子膨胀阀部分堵塞，会导致该段管路压力下降，室外机低压压力开关断开。The principle of this detection method is: once the electronic expansion valve of the outdoor unit is completely blocked, and the compressor of the outdoor unit continues to work for a period of time, such as more than 2 minutes, a section of pipe from behind the electronic expansion valve of the outdoor unit to in front of the compressor inlet will be blocked. The refrigerant in the pipeline is completely evacuated, and the temperature of the evacuated pipeline will be close to the outdoor temperature. Therefore, the three temperature values measured from three different positions of the evacuated pipeline are T 1 , T 2 , T 3 The temperature difference with the outdoor temperature T O will not exceed a certain range, that is, 3°C, and because the electronic expansion valve of the outdoor unit is blocked, the pressure of the pipeline after evacuation will drop sharply, resulting in the disconnection of the low-pressure pressure switch of the outdoor unit, so this is met. Two conditions, it can be confirmed that the electronic expansion valve of the external unit is completely closed; and if the electronic expansion valve of the external unit is partially blocked, the pipeline from the back of the electronic expansion valve of the external unit to the inlet of the compressor will not be completely evacuated, but due to the electronic The pipeline in the expansion valve is partially blocked, and the refrigerant is greatly throttled, so that the temperature at the outlet of the electronic expansion valve of the external unit, that is, the inlet of the outdoor heat exchanger coil, drops sharply. After the electronic expansion valve is partially blocked, the compressor runs After a period of time, such as not less than 6 minutes, the defrosting temperature will be lower than a certain value such as -15°C, and due to the partial blockage of the electronic expansion valve, the pressure of this section of the pipeline will drop, and the low pressure switch of the outdoor unit will be disconnected.
采用以上方法，本发明多联式空调机组的外机电子膨胀阀是否焊堵的检测方法与现有技术相比，具有以下优点：By adopting the above method, compared with the prior art, the method for detecting whether the electronic expansion valve of the external unit of the multi-connected air-conditioning unit is welded or not has the following advantages:
采用本发明的检测方法，能够在短时间内如2到6分钟内快速的得到是否焊堵的结论，而且整个测试过程完全通过空调机组自动进行检测，无需人工操作，与现有技术完全通过人工逐一排查最后确定焊堵状况的检测方法相比，本发明检测方法快捷、方便、省时省力。By adopting the detection method of the present invention, it is possible to quickly obtain the conclusion of whether the welding is blocked in a short period of time, such as 2 to 6 minutes, and the entire test process is completely automatically detected by the air conditioning unit without manual operation, which is completely manual compared with the prior art. Compared with the detection method of finally determining the welding blocking condition by checking one by one, the detection method of the present invention is quick, convenient, time-saving and labor-saving.
附图说明Description of drawings
图1是实施本发明多联式空调机组的外机电子膨胀阀是否焊堵的检测方法的系统原理图。Fig. 1 is a schematic diagram of the system implementing the method for detecting whether the electronic expansion valve of the external unit of the multi-connected air-conditioning unit is welded and blocked according to the present invention.
图中所示1、压缩机，2、室外换热器，3、室外机低压压力开关，4、外机电子膨胀阀，5、第一温度传感器，6、第二温度传感器，7、第三温度传感器。As shown in the figure 1. Compressor, 2. Outdoor heat exchanger, 3. Low pressure switch of outdoor unit, 4. Electronic expansion valve of outdoor unit, 5. First temperature sensor, 6. Second temperature sensor, 7. Third Temperature Sensor.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本发明多联式空调机组的外机电子膨胀阀是否焊堵的检测方法，其具体步骤如下：As shown in Figure 1, the detection method of whether the electronic expansion valve of the external unit of the multi-connected air conditioner unit of the present invention is welded and blocked, the specific steps are as follows:
a、将整个机组调整到制热模式，将一个室外机的压缩机1开机运行至少2分钟，如运行2分钟；a. Adjust the whole unit to the heating mode, and start the compressor 1 of an outdoor unit to run for at least 2 minutes, such as 2 minutes;
b、检测该室外机的吸气温度T1、室外换热器2的盘管中段温度T2、除霜温度T3以及室外温度TO，其中，室外机的压缩机1入口处设有第一温度传感器5，第一温度传感器5用于测量压缩机1入口处的温度即吸气温度T1；室外机的室外换热器2的盘管中段设有第二温度传感器6，第二温度传感器6用于测量室外换热器2的盘管中段温度T2；室外机的室外换热器2的入口处设有第三温度传感器7，第三温度传感器7用于测量室外换热器2的入口温度T3，该入口温度T3行业内习惯称之为除霜温度T3；将上述四个温度值传给空调主控制器，并由空调主控制器计算出吸气温度T1与室外温度TO之间的差值ΔT1、室外换热器2的盘管中段温度T2与室外温度TO之间的差值ΔT2；除霜温度T3与室外温度TO之间的差值ΔT3。b. Detect the suction temperature T 1 of the outdoor unit, the temperature T 2 of the middle section of the coil of the outdoor heat exchanger 2, the defrosting temperature T 3 and the outdoor temperature T O , wherein the compressor 1 entrance of the outdoor unit is provided with a second A temperature sensor 5, the first temperature sensor 5 is used to measure the temperature at the inlet of the compressor 1, that is, the suction temperature T1 ; the middle section of the coil pipe of the outdoor heat exchanger 2 of the outdoor unit is provided with a second temperature sensor 6, the second temperature The sensor 6 is used to measure the temperature T 2 of the middle section of the coil of the outdoor heat exchanger 2; the third temperature sensor 7 is installed at the entrance of the outdoor heat exchanger 2 of the outdoor unit, and the third temperature sensor 7 is used to measure the temperature of the outdoor heat exchanger 2 The inlet temperature T 3 of the inlet temperature T 3 is customarily called the defrosting temperature T 3 in the industry; the above four temperature values are transmitted to the main controller of the air conditioner, and the main controller of the air conditioner calculates the suction temperature T 1 and The difference ΔT 1 between the outdoor temperature T O , the difference ΔT 2 between the coil middle temperature T 2 of the outdoor heat exchanger 2 and the outdoor temperature T O ; the difference ΔT 2 between the defrosting temperature T 3 and the outdoor temperature T O The difference ΔT 3 .
c、判断是否满足条件ΔT1、ΔT2、ΔT3均小于或等于3且室外机低压压力开关3断开，如果满足条件，则确定外机电子膨胀阀4完全焊堵，检测过程终止，如果不满足条件，则进入下一步。举例说明，如果TO是7℃，T1是7℃，T2是6℃，T3是5℃，则ΔT1为0，ΔT2为1，ΔT3为2，三个值均小于3，假如此时室外机低压压力开关3断开，则外机电子膨胀阀4完全焊堵。c. Determine whether the conditions ΔT 1 , ΔT 2 , and ΔT 3 are all less than or equal to 3 and the low-pressure pressure switch 3 of the outdoor unit is disconnected. If the conditions are met, it is determined that the electronic expansion valve 4 of the outdoor unit is completely welded and blocked, and the detection process is terminated. If If the condition is not met, go to the next step. For example, if T O is 7°C, T 1 is 7°C, T 2 is 6°C, and T 3 is 5°C, then ΔT 1 is 0, ΔT 2 is 1, ΔT 3 is 2, and all three values are less than 3 , if the low pressure switch 3 of the outdoor unit is disconnected at this time, the electronic expansion valve 4 of the outdoor unit is completely welded and blocked.
d、继续运行该室外机的压缩机1至少4分钟，如4分钟。d. Continue to run the compressor 1 of the outdoor unit for at least 4 minutes, such as 4 minutes.
e、检测此时的除霜温度T3’并将结果传给空调主控制器，并由空调主控制器判断是否满足条件T3’≤-15℃且室外机低压压力开关3断开，如果满足条件，则确定外机电子膨胀阀4部分焊堵，如果不满足条件，则确定外机电子膨胀阀4没有焊堵，检测过程结束。e. Detect the defrosting temperature T 3 ' at this time and send the result to the main controller of the air conditioner, and the main controller of the air conditioner judges whether the condition T 3 '≤-15°C is met and the low pressure switch 3 of the outdoor unit is disconnected, if If the conditions are met, it is determined that the electronic expansion valve 4 of the external unit is partially welded, and if the conditions are not met, it is determined that the electronic expansion valve 4 of the external unit is not blocked, and the detection process ends.
以上检测方法，是对一个室外机进行的检测方法，如果该多联空气机组拥有多个室外机，则多个室外机的检测方法也和一个室外机的检测方法相同，即对该机组中的每个室外机都进行相同步骤的检测，对每个室外机进行的检测，可以同时进行，也可以先后进行。The above detection method is a detection method for one outdoor unit. If the multi-connected air unit has multiple outdoor units, the detection method for multiple outdoor units is the same as that for one outdoor unit. Each outdoor unit carries out the detection of the same steps, and the detection of each outdoor unit can be carried out at the same time or successively.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095097.XA CN102645327B (en) | 2012-03-31 | 2012-03-31 | Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095097.XA CN102645327B (en) | 2012-03-31 | 2012-03-31 | Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102645327A CN102645327A (en) | 2012-08-22 |
| CN102645327B true CN102645327B (en) | 2015-01-07 |
Family
ID=46658289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210095097.XA Active CN102645327B (en) | 2012-03-31 | 2012-03-31 | Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102645327B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090831B (en) * | 2014-07-04 | 2017-12-29 | 珠海格力电器股份有限公司 | Method for self-checking welding blockage of dehumidifier |
| CN105954052B (en) * | 2016-05-27 | 2018-04-20 | 珠海格力电器股份有限公司 | Capillary tube blockage detection system and method |
| CN107490156B (en) * | 2017-09-27 | 2019-09-20 | 广东美的暖通设备有限公司 | Three control air-conditionings and its method for diagnosing faults |
| CN108890069A (en) * | 2018-08-22 | 2018-11-27 | 长沙格力暖通制冷设备有限公司 | Welding tool for air conditioner multi-split air conditioner and production line thereof |
| CN109489204B (en) * | 2018-11-14 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Expansion valve blockage determination method and air conditioner |
| CN109612022B (en) * | 2018-11-28 | 2021-01-26 | 宁波奥克斯电气股份有限公司 | Control method for preventing air conditioner from blocking valve |
| CN109708248B (en) * | 2018-12-29 | 2020-02-04 | 广东美的暖通设备有限公司 | Valve failure detection method of air conditioning system and air conditioning system |
| CN110967207B (en) * | 2019-12-04 | 2021-10-01 | 常州大学 | A method for detecting welding plugging performance of an integral heat pump water heater system |
| CN115076924B (en) * | 2022-04-20 | 2025-02-18 | 青岛海尔空调器有限总公司 | Air conditioner welding blockage detection method, control system, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446463A (en) * | 2007-11-27 | 2009-06-03 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, and self-adaptive control method and device of heat pump device |
| EP2119982A2 (en) * | 2004-10-18 | 2009-11-18 | Mitsubishi Denki Kabushiki Kaisha | Refrigeration/air conditioning equipment |
| CN101509693B (en) * | 2009-03-16 | 2011-05-18 | 宁波奥克斯电气有限公司 | Control method of frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012063033A (en) * | 2010-09-14 | 2012-03-29 | Panasonic Corp | Air conditioner |
-
2012
- 2012-03-31 CN CN201210095097.XA patent/CN102645327B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2119982A2 (en) * | 2004-10-18 | 2009-11-18 | Mitsubishi Denki Kabushiki Kaisha | Refrigeration/air conditioning equipment |
| CN101446463A (en) * | 2007-11-27 | 2009-06-03 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, and self-adaptive control method and device of heat pump device |
| CN101509693B (en) * | 2009-03-16 | 2011-05-18 | 宁波奥克斯电气有限公司 | Control method of frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2012-63033A 2012.03.29 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102645327A (en) | 2012-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102645327B (en) | Method for detecting welding blockage of electronic outdoor unit expansion valves of multi-coupled air-conditioning unit | |
| CN105065249B (en) | Compressor performance detection device, air conditioning system with same and control method | |
| CN106247530B (en) | More air-conditioning self checking methods are dragged in multitube frequency conversion one | |
| CN103293010B (en) | Air conditioner refrigerant detection method, device and system | |
| CN102278804B (en) | Control method for preventing bias flow of refrigerants during heating of multi-connected air conditioning unit | |
| US20140123685A1 (en) | Air conditioner and a method of controlling an air conditioner | |
| CN105299841B (en) | The fault detection method of the heat exchange valve body of multiple on-line system and its outdoor heat exchanger | |
| CN103792103B (en) | The detection method of VRF Air Conditioning System | |
| CN101231016A (en) | Pipe connection inspection device and method for multi-connected air conditioner | |
| JP6521571B2 (en) | Cooling and heating equipment | |
| CN102914027A (en) | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit | |
| CN107560105B (en) | Method and device for judging connection pipe error of four-way valve and machine readable storage medium | |
| WO2021250789A1 (en) | Refrigeration cycle device | |
| CN102967450B (en) | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely | |
| CN107062538A (en) | A kind of air conditioner intelligent detecting method | |
| CN104535884B (en) | Judge domestic multi-connection machine indoor set data wire whether the method for wrong | |
| CN105526676B (en) | Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops | |
| CN110411084A (en) | A defrosting device, control method and air conditioner that do not affect indoor temperature | |
| KR101192341B1 (en) | Control method of multi air conditioner | |
| CN103791596A (en) | Method for judging whether resistance values of temperature sensors of multi-union air conditioner of refrigeration mode deviate | |
| CN112097364B (en) | Air conditioner and electronic expansion valve fault detection method thereof | |
| CN103791586B (en) | Judge the VRF Air Conditioning System method whether ice is stifled due to water of refrigeration mode | |
| CN105546736B (en) | The method to solve the liquid accumulation of multi-connected indoor heat exchangers during heating | |
| CN114459119A (en) | Air conditioner blockage detection method, device, equipment and storage medium | |
| CN113701260A (en) | Air conditioning system and opening and closing detection method of branch stop valves of air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Country or region after: China Address before: No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |