CN106352472B - Multi-line system and its linkage fault detection method - Google Patents

Multi-line system and its linkage fault detection method Download PDF

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Publication number
CN106352472B
CN106352472B CN201610695755.7A CN201610695755A CN106352472B CN 106352472 B CN106352472 B CN 106352472B CN 201610695755 A CN201610695755 A CN 201610695755A CN 106352472 B CN106352472 B CN 106352472B
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indoor unit
indoor
heat exchanger
temperature
preset value
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CN106352472A (en
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王命仁
李元阳
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Abstract

The invention discloses a kind of multi-line system and its linkage fault detection methods, the described method comprises the following steps: judging whether multi-line system is in refrigeration standard-sized sheet or heating standard-sized sheet operating status；If system is in refrigeration standard-sized sheet operating status, judge whether the interior machine throttle valve of each indoor unit and corresponding refrigeration solenoid valve break down according to the inlet temperature and outlet temperature of the current indoor environment temperature of each indoor unit, the indoor heat exchanger of each indoor unit；If system is in heating standard-sized sheet operating status, judge whether the interior machine throttle valve of each indoor unit and corresponding heating solenoid valve break down according to the inlet temperature and outlet temperature of the current indoor environment temperature of each indoor unit, the indoor heat exchanger of each indoor unit.This method in multi-line system operational process, can rapidly and effectively judge whether the solenoid valve of part flow arrangement and the interior machine throttle valve of indoor unit break down, to guarantee system safe and reliable operation.

Description

Multi-line system and its linkage fault detection method
Technical field
The present invention relates to air-conditioning technical field, in particular to interior machine throttle valve and part flow arrangement in a kind of multi-line system The linkage fault detection method of solenoid valve and a kind of multi-line system.
Background technique
Multi-line system can be freezed and be heated simultaneously, but due to its system complex, valve body is numerous, not only to have had Kind control logic carrys out application valve body movement, and to guarantee that valve body can work normally, to guarantee that system can for a long time may be used By operation.
In general, in multi-line system, the adapter tube of indoor unit and part flow arrangement needs to weld installation, due to indoor unit number of units compared with More, corresponding solder joint is also more, in system operation, it is possible to the valve body that welding slag is blocked in indoor unit and part flow arrangement occur In, cause valve body to occur abnormal, it is also possible to because the problems such as valve body ageing failure, leads to valve body failure can not reliably working.Cause This still can rapidly and effectively be detected in indoor unit and part flow arrangement under conditions of how guaranteeing that system operates normally Whether valve body breaks down, and is a technical problem to be solved urgently.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide the electricity of machine throttle valve and part flow arrangement interior in a kind of multi-line system The linkage fault detection method of magnet valve, this method can rapidly and effectively be judged point in multi-line system operational process Whether the interior machine throttle valve of solenoid valve and indoor unit in stream device breaks down, to guarantee the safe and reliable operation of system.
It is another object of the present invention to propose a kind of multi-line system.
To achieve the above object, one aspect of the present invention embodiment propose in a kind of multi-line system interior machine throttle valve with point The linkage fault detection method of the solenoid valve of device is flowed, the multi-line system includes outdoor unit, N number of indoor unit and shunting dress Set, each indoor unit in N number of indoor unit includes indoor heat exchanger and interior machine throttle valve, the part flow arrangement include with The corresponding connected N number of refrigeration solenoid valve of N number of indoor unit and N number of heating solenoid valve, wherein N is positive integer, the method packet It includes following steps: judging whether the multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operating status；Such as Multi-line system described in fruit is in the refrigeration standard-sized sheet operating status, then according to the current indoor environment temperature of each indoor unit Degree, each indoor unit indoor heat exchanger inlet temperature and outlet temperature judge each indoor unit interior machine throttle valve and Whether the corresponding refrigeration solenoid valve of each indoor unit breaks down；And if the multi-line system is in the heating Standard-sized sheet operating status, then according to the current indoor environment temperature of each indoor unit, the indoor heat exchanger of each indoor unit Inlet temperature and outlet temperature judges the interior machine throttle valve and the corresponding heating solenoid valve of each indoor unit of each indoor unit Whether break down.
The linkage failure of the solenoid valve of interior machine throttle valve and part flow arrangement in multi-line system according to an embodiment of the present invention Detection method, first, it is determined that whether multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operating status, if Multi-line system is in refrigeration standard-sized sheet operating status, then according to the current indoor environment temperature of each indoor unit, each indoor unit The inlet temperature and outlet temperature of indoor heat exchanger judge that the interior machine throttle valve of each indoor unit and each indoor unit are corresponding Whether refrigeration solenoid valve breaks down；If multi-line system is in heating standard-sized sheet operating status, according to each indoor unit Current indoor environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior of each indoor unit Whether machine throttle valve and the corresponding heating solenoid valve of each indoor unit break down.This method can be run in multi-line system Cheng Zhong, rapidly and effectively judges whether the interior machine throttle valve of the solenoid valve and indoor unit in part flow arrangement breaks down, from And guarantee the safe and reliable operation of system.
According to one embodiment of present invention, the current indoor environment temperature according to each indoor unit, each The inlet temperature and outlet temperature of the indoor heat exchanger of indoor unit judges the interior machine throttle valve of each indoor unit and described every Whether the corresponding refrigeration solenoid valve of a indoor unit breaks down, comprising: if the current indoor environment temperature of i-th of indoor unit with Difference in the indoor unit between the inlet temperature of indoor heat exchanger is less than the first preset value and the current indoor ring of the indoor unit Difference in border temperature and the indoor unit between the outlet temperature of indoor heat exchanger is less than first preset value and remaining is indoor Difference in machine between the current indoor environment temperature with the inlet temperature of corresponding indoor heat exchanger of each indoor unit is greater than the Two preset values then judge that the interior machine throttle valve of i-th of indoor unit or corresponding refrigeration solenoid valve break down, wherein i =1,2,3 ..., N.
According to one embodiment of present invention, in the interior machine throttle valve or corresponding system for judging i-th of indoor unit After cold solenoid valve breaks down, further includes: control remaining described indoor unit and be turned off, and judge in i-th of indoor unit It is pre- whether the difference in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger is greater than third If value；If in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference is greater than the third preset value, then judges that the interior machine throttle valve of the indoor unit breaks down and the corresponding system of the indoor unit Cold solenoid valve does not break down.
According to one embodiment of present invention, in the interior machine throttle valve or corresponding system for judging i-th of indoor unit After cold solenoid valve breaks down, further includes: control remaining described indoor unit and be turned off, and judge in i-th of indoor unit Whether the difference in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger is pre- less than the 4th If the difference in the current indoor environment temperature and the indoor unit of value and the indoor unit between the inlet temperature of indoor heat exchanger is It is no less than the 5th preset value, or judge the low pressure pressure of the inlet temperature of indoor heat exchanger and the part flow arrangement in the indoor unit Whether the difference between the corresponding saturation temperature of power is greater than the 6th preset value；If the outlet temperature of indoor heat exchanger in the indoor unit Difference in degree and the indoor unit between the inlet temperature of indoor heat exchanger is less than working as the 4th preset value and the indoor unit Difference in preceding indoor environment temperature and the indoor unit between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or In person's indoor unit between the inlet temperature of indoor heat exchanger saturation temperature corresponding with the low pressure of the part flow arrangement Difference be greater than the 6th preset value, then judge the indoor unit it is corresponding refrigeration solenoid valve break down and the indoor unit it is interior Machine throttle valve does not break down.
According to one embodiment of present invention, the current indoor environment temperature according to each indoor unit, each The inlet temperature and outlet temperature of the indoor heat exchanger of indoor unit judge each indoor unit interior machine throttle valve and each room Whether the corresponding heating solenoid valve of interior machine breaks down, comprising: if in i-th of indoor unit the outlet temperature of indoor heat exchanger with Difference between the current indoor environment temperature of the indoor unit enters less than indoor heat exchanger in the 7th preset value and the indoor unit Difference between mouth temperature and the current indoor environment temperature of the indoor unit is less than in the 7th preset value and remaining indoor unit It is pre- that difference between the outlet temperature of the indoor heat exchanger of each indoor unit and corresponding current indoor environment temperature is greater than the 8th If value, then judge that the interior machine throttle valve of i-th of indoor unit or corresponding heating solenoid valve break down, wherein i=1, 2、3、……、N。
According to one embodiment of present invention, in the interior machine throttle valve or corresponding system for judging i-th of indoor unit After thermoelectrical magnetic valve breaks down, further includes: control remaining described indoor unit and be turned off, and judge in i-th of indoor unit Difference between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit whether be greater than the 9th preset value, And whether the difference in the indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is small In the tenth preset value；If in the indoor unit current indoor environment temperature of the inlet temperature of indoor heat exchanger and the indoor unit it Between difference be greater than the outlet temperature of indoor heat exchanger and the indoor unit in the 9th preset value and the indoor unit work as cup Difference between interior environment temperature is less than the tenth preset value, then judge the interior machine throttle valve of the indoor unit break down and The corresponding heating solenoid valve of the indoor unit does not break down.
According to one embodiment of present invention, in the interior machine throttle valve or corresponding system for judging i-th of indoor unit After thermoelectrical magnetic valve breaks down, further includes: control remaining described indoor unit and be turned off, and judge in i-th of indoor unit Whether the difference between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is default less than the 11st Whether the difference in value and the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Whether the corresponding saturation temperature rise of high-pressure less than the part flow arrangement in the 12nd preset value and preset time is big In the 13rd preset value；If the current indoor environment temperature of the outlet temperature of indoor heat exchanger and the indoor unit in the indoor unit Between difference be less than the inlet temperature of indoor heat exchanger and working as the indoor unit in the 11st preset value and the indoor unit Difference between preceding indoor environment temperature is less than the height of the part flow arrangement in the 12nd preset value and the preset time The corresponding saturation temperature rise of pressure pressure is greater than the 13rd preset value, then judges the corresponding heating solenoid valve of the indoor unit It breaks down and the interior machine throttle valve of the indoor unit does not break down.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of multi-line system, comprising: outdoor unit；N A indoor unit, each indoor unit in N number of indoor unit includes indoor heat exchanger and interior machine throttle valve, wherein N is positive whole Number；Part flow arrangement, the part flow arrangement include connected N number of refrigeration solenoid valve corresponding with N number of indoor unit and N number of heating electricity Magnet valve；Control module, the control module for judge the multi-line system whether be in refrigeration standard-sized sheet operating status or Heat standard-sized sheet operating status, wherein if the multi-line system is in the refrigeration standard-sized sheet operating status, the control module Then according to the current indoor environment temperature of each indoor unit, the inlet temperature and outlet of the indoor heat exchanger of each indoor unit Temperature judges whether the interior machine throttle valve of each indoor unit and the corresponding refrigeration solenoid valve of each indoor unit occur event Barrier；If the multi-line system is in the heating standard-sized sheet operating status, according to each interior if the control module Current indoor environment temperature, the inlet temperature and outlet temperature of the indoor heat exchanger of each indoor unit of machine judge each room Whether the interior machine throttle valve and the corresponding heating solenoid valve of each indoor unit of interior machine break down.
Multi-line system according to an embodiment of the present invention, it is complete that control module first determines whether multi-line system is in refrigeration Open shop state or heating standard-sized sheet operating status, if multi-line system is in refrigeration standard-sized sheet operating status, if control module Sentenced according to the inlet temperature and outlet temperature of the current indoor environment temperature of each indoor unit, the indoor heat exchanger of each indoor unit Break the interior machine throttle valve of each indoor unit and whether the corresponding refrigeration solenoid valve of each indoor unit breaks down；If multi-connected machine system System is in heating standard-sized sheet operating status, and control module is then according to the current indoor environment temperature of each indoor unit, each indoor unit The inlet temperature and outlet temperature of indoor heat exchanger judge that the interior machine throttle valve of each indoor unit and each indoor unit are corresponding Whether heating solenoid valve breaks down.The system can rapidly and effectively be judged point in multi-line system operational process Whether the interior machine throttle valve of solenoid valve and indoor unit in stream device breaks down, to guarantee the safe and reliable operation of system.
According to one embodiment of present invention, the control module is according to the current indoor environment temperature of each indoor unit Degree, each indoor unit indoor heat exchanger inlet temperature and outlet temperature judge each indoor unit interior machine throttle valve and When whether the corresponding refrigeration solenoid valve of each indoor unit breaks down, wherein if the current indoor ring of i-th of indoor unit Difference in border temperature and the indoor unit between the inlet temperature of indoor heat exchanger is less than the first preset value and the indoor unit is worked as Difference in preceding indoor environment temperature and the indoor unit between the outlet temperature of indoor heat exchanger be less than first preset value and Difference in remaining indoor unit between the current indoor environment temperature with the inlet temperature of corresponding indoor heat exchanger of each indoor unit Value is greater than the second preset value, and the control module then judges interior machine throttle valve or corresponding system in i-th of indoor unit Cold solenoid valve breaks down, wherein i=1,2,3 ..., N.
According to one embodiment of present invention, the control module is in the interior machine throttle valve for judging i-th of indoor unit Or after corresponding refrigeration solenoid valve breaks down, also controls remaining described indoor unit and be turned off, and judge i-th of Room Whether the difference in interior machine in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger is greater than Third preset value, wherein if the outlet temperature of indoor heat exchanger enters with indoor heat exchanger in the indoor unit in the indoor unit Difference between mouth temperature is greater than the third preset value, and the control module then judges that the interior machine throttle valve of the indoor unit occurs The failure and corresponding refrigeration solenoid valve of the indoor unit does not break down.
According to one embodiment of present invention, the control module is in the interior machine throttle valve for judging i-th of indoor unit Or after corresponding refrigeration solenoid valve breaks down, also controls remaining described indoor unit and be turned off, and judge i-th of Room Whether the difference in interior machine in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger is less than In the current indoor environment temperature and the indoor unit of 4th preset value and the indoor unit between the inlet temperature of indoor heat exchanger Whether difference is less than the 5th preset value, or judges the current indoor environment temperature of the indoor unit and the low pressure of the part flow arrangement Whether the difference between the corresponding saturation temperature of pressure is greater than the 6th preset value, wherein if indoor heat exchanger in the indoor unit Outlet temperature and the indoor unit in indoor heat exchanger inlet temperature between difference be less than the 4th preset value and the room Difference in the current indoor environment temperature of interior machine and the indoor unit between the inlet temperature of indoor heat exchanger is less than the described 5th The current indoor environment temperature of preset value or indoor unit saturation temperature corresponding with the low pressure of the part flow arrangement it Between difference be greater than the 6th preset value, it is former that the control module then judges that the corresponding refrigeration solenoid valve of the indoor unit occurs The interior machine throttle valve of barrier and the indoor unit does not break down.
According to one embodiment of present invention, the control module is according to the current indoor environment temperature of each indoor unit Degree, each indoor unit indoor heat exchanger inlet temperature and outlet temperature judge each indoor unit interior machine throttle valve and When whether the corresponding heating solenoid valve of each indoor unit breaks down, wherein if indoor heat exchanger goes out in i-th of indoor unit Difference between mouth temperature and the current indoor environment temperature of the indoor unit is changed less than interior in the 7th preset value and the indoor unit Difference between the inlet temperature of hot device and the current indoor environment temperature of the indoor unit be less than the 7th preset value and remaining Difference in indoor unit between the outlet temperature of the indoor heat exchanger of each indoor unit and corresponding current indoor environment temperature is big In the 8th preset value, the control module then judges the interior machine throttle valve or corresponding heating electromagnetism of i-th of indoor unit Valve breaks down, wherein i=1,2,3 ..., N.
According to one embodiment of present invention, the control module is in the interior machine throttle valve for judging i-th of indoor unit Or after corresponding heating solenoid valve breaks down, also controls remaining described indoor unit and be turned off, and judge i-th of Room Whether the difference in interior machine between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is greater than the 9th Difference in preset value and the indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Whether less than the tenth preset value, wherein if the inlet temperature of indoor heat exchanger and the indoor unit works as cup in the indoor unit Difference between interior environment temperature is greater than the outlet temperature of indoor heat exchanger and the room in the 9th preset value and the indoor unit Difference between the current indoor environment temperature of interior machine is less than the tenth preset value, and the control module then judges the indoor unit Interior machine throttle valve break down and the corresponding heating solenoid valve of the indoor unit does not break down.
According to one embodiment of present invention, the control module is in the interior machine throttle valve for judging i-th of indoor unit Or after corresponding heating solenoid valve breaks down, also controls remaining described indoor unit and be turned off, and judge i-th of Room Whether the difference in interior machine between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is less than the tenth Difference in one preset value and the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Value whether less than the part flow arrangement in the 12nd preset value and preset time the corresponding saturation temperature rise of high-pressure Whether the 13rd preset value is greater than, wherein if the outlet temperature of indoor heat exchanger and the indoor unit is current in the indoor unit Difference between indoor environment temperature be less than in the 11st preset value and the indoor unit inlet temperature of indoor heat exchanger with Difference between the current indoor environment temperature of the indoor unit is less than described in the 12nd preset value and the preset time The corresponding saturation temperature rise of the high-pressure of part flow arrangement is greater than the 13rd preset value, and the control module then judges The corresponding heating solenoid valve of the indoor unit breaks down and the interior machine throttle valve of the indoor unit does not break down.
Detailed description of the invention
Fig. 1 is the refrigerant stream according to an embodiment of the invention when multi-line system is in refrigeration standard-sized sheet operating status Xiang Tu；
Fig. 2 is the refrigerant stream according to an embodiment of the invention when multi-line system is in heating standard-sized sheet operating status Xiang Tu；
Fig. 3 is the linkage of the solenoid valve of interior machine throttle valve and part flow arrangement in multi-line system according to an embodiment of the present invention The flow chart of fault detection method；
Fig. 4 is the linkage event according to an embodiment of the invention when multi-line system is in refrigeration standard-sized sheet operating status Hinder the flow chart of detection method；And
Fig. 5 is the linkage event according to an embodiment of the invention when multi-line system is in heating standard-sized sheet operating status Hinder the flow chart of detection method.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
It describes in the multi-line system proposed according to embodiments of the present invention interior machine throttle valve with reference to the accompanying drawings and shunts The linkage fault detection method and multi-line system of the solenoid valve of device.
In an embodiment of the present invention, multi-line system includes outdoor unit, N number of indoor unit and part flow arrangement, N number of indoor unit In each indoor unit include indoor heat exchanger and interior machine throttle valve, part flow arrangement includes connected N corresponding with N number of indoor unit A refrigeration solenoid valve and N number of heating solenoid valve, wherein N is positive integer.
Specifically, it is illustrated here with four indoor units.As depicted in figs. 1 and 2, multi-line system may include outdoor Machine, first to fourth indoor unit and part flow arrangement.Wherein, outdoor unit may include compressor and fluid reservoir, first to fourth Room Each indoor unit may each comprise indoor heat exchanger and interior machine throttle valve in interior machine.
Part flow arrangement may include gas-liquid separator, First Heat Exchanger, first throttle element, the second heat exchanger, the second throttling Element, refrigeration solenoid valve, heating solenoid valve, refrigeration check valve and heating check valve.Wherein, the entrance of gas-liquid separator and room One end of outer machine is connected, and the entrance of the first heat exchange flow path of the liquid outlet and First Heat Exchanger of gas-liquid separator is connected.The The outlet of first heat exchange flow path of one end of one restricting element and First Heat Exchanger is connected, the other end of first throttle element with The entrance of first heat exchange flow path of the second heat exchanger, the one end for heating check valve are connected.One end of second restricting element and the The outlet of the first heat exchange flow path, one end for the check valve that freezes of two heat exchangers are connected, the second heat exchange flow path of the second heat exchanger Entrance be connected with the other end of the second restricting element, the second heat exchanger second heat exchange flow path outlet and First Heat Exchanger Second heat exchange flow path entrance be connected.The outlet of second heat exchange flow path of First Heat Exchanger and refrigeration solenoid valve, outdoor unit The other end be connected, refrigeration check valve, heat check valve the other end be connected with corresponding four indoor units, gas-liquid separation The gas vent of device is connected with one end of heating solenoid valve, the other end and the corresponding room of refrigeration solenoid valve, heating solenoid valve Interior machine is connected.Wherein, first throttle element and the second restricting element can be electric expansion valve.
As shown in Figure 1, being delivered in part flow arrangement when multi-line system is in refrigeration standard-sized sheet operating status from outdoor unit Supercooling refrigerant, through refrigeration indoor unit interior machine throttle valve, have refrigeration can need indoor heat absorption after, pass through open refrigeration Solenoid valve converges in the low-voltage tube of part flow arrangement, eventually passes back to outdoor unit.
As shown in Fig. 2, being delivered to part flow arrangement from outdoor unit when multi-line system is in heating standard-sized sheet operating status Refrigerant is overheated, by open heating solenoid valve, after the indoor heat release for having heating that can need, by the interior machine section for heating indoor unit Stream valve and corresponding heating check valve flow to the second restricting element, after the second restricting element throttling expansion, from the second throttling member Branch where part returns to outdoor unit.
In multi-line system operational process, it is possible to there is welding slag and is blocked in the valve body of indoor unit and part flow arrangement, Cause valve body to occur abnormal, it is also possible to due to the problems such as valve body ageing failure, leads to valve body failure can not reliably working, thus Corresponding indoor unit is caused to can not work normally, still, the indoor unit of other no exceptions can still operate normally, because This is based on the feature, and the invention proposes the linkages of machine throttle valve interior in a kind of multi-line system and the solenoid valve of part flow arrangement Fault detection method still can rapidly and effectively judge the valve of indoor unit and part flow arrangement in system operation Whether body breaks down.
Fig. 3 is the linkage of the solenoid valve of interior machine throttle valve and part flow arrangement in multi-line system according to an embodiment of the present invention The flow chart of fault detection method.As shown in figure 3, in the multi-line system solenoid valve of interior machine throttle valve and part flow arrangement connection Dynamic fault detection method, comprising the following steps:
S1, judges whether multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operating status.
S2, if multi-line system is in refrigeration standard-sized sheet operating status, according to the current indoor environment of each indoor unit Temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior machine throttle valve of each indoor unit and every Whether the corresponding refrigeration solenoid valve of a indoor unit breaks down.
According to one embodiment of present invention, according to the current indoor environment temperature of each indoor unit, each indoor unit The inlet temperature and outlet temperature of indoor heat exchanger judges the interior machine throttle valve and the corresponding system of each indoor unit of each indoor unit Whether cold solenoid valve breaks down, comprising: if the current indoor environment temperature of i-th of indoor unit is changed with interior in the indoor unit Difference between the inlet temperature of hot device is less than the current indoor environment temperature of the first preset value and the indoor unit and the indoor unit Difference between the outlet temperature of middle indoor heat exchanger less than in the first preset value and remaining indoor unit each indoor unit it is current Difference between indoor environment temperature and the inlet temperature of corresponding indoor heat exchanger is greater than the second preset value, then judges i-th The interior machine throttle valve of indoor unit or corresponding refrigeration solenoid valve break down.Wherein, i=1,2,3 ..., N, first is default Value and the second preset value can be demarcated according to the actual situation, for example, the first preset value A1 can be 3 DEG C, the second preset value A2 It can be 6 DEG C.
It specifically, can as shown in Figure 1, when multi-line system is in refrigeration standard-sized sheet operating status and system does not owe refrigerant According to the current indoor environment temperature T1 of each indoor unit, the inlet temperature T2a of the indoor heat exchanger of each indoor unit and out Mouth temperature T2b judges whether the interior machine throttle valve of each indoor unit and the corresponding refrigeration solenoid valve of each indoor unit break down. When detecting i-th of indoor unit, if T1-T2a < A1 and T1-T2b the < A1 of i-th of indoor unit, illustrate the temperature-sensitive of T2a Packet illustrates in i-th of indoor unit in normal operating conditions at this time if detecting the T1-T2a > A2 of remaining indoor unit Refrigerant unsmooth flowing, and remaining indoor unit is normal may determine that may be that the interior machine throttle valve of the indoor unit breaks down at this time, It is also likely to be that the refrigeration solenoid valve of part flow arrangement corresponding with the indoor unit breaks down.
In order to further judge the interior machine throttle valve of i-th of indoor unit or the refrigeration solenoid valve of corresponding part flow arrangement It breaks down, in one embodiment of the invention, in the interior machine throttle valve for judging i-th of indoor unit or corresponding refrigeration electricity After magnet valve breaks down, further includes: control remaining indoor unit and be turned off, and judge indoor heat exchanger in i-th of indoor unit Whether the difference in outlet temperature and the indoor unit between the inlet temperature of indoor heat exchanger is greater than third preset value.If the room Difference in interior machine in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger is greater than third Preset value then judges that the interior machine throttle valve of the indoor unit breaks down and event does not occur for the corresponding refrigeration solenoid valve of the indoor unit Barrier.Wherein, third preset value can be demarcated according to the actual situation, for example, third preset value A3 can be 8 DEG C.
Further, it is broken down in the interior machine throttle valve or corresponding refrigeration solenoid valve for judging i-th of indoor unit Afterwards, further includes: control remaining indoor unit and be turned off, and judge the outlet temperature of indoor heat exchanger and the room in i-th of indoor unit Whether the difference in interior machine between the inlet temperature of indoor heat exchanger is less than the 4th preset value and the current indoor ring of the indoor unit Whether the difference in border temperature and the indoor unit between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judgement should Whether the difference in indoor unit between the inlet temperature of indoor heat exchanger and the corresponding saturation temperature of the low pressure of part flow arrangement Greater than the 6th preset value.If the entrance of the outlet temperature of indoor heat exchanger and indoor heat exchanger in the indoor unit in the indoor unit Difference between temperature is less than heat exchange indoor in the current indoor environment temperature of the 4th preset value and the indoor unit and the indoor unit The inlet temperature and shunting of difference between the inlet temperature of device less than indoor heat exchanger in the 5th preset value or the indoor unit Difference between the corresponding saturation temperature of the low pressure of device is greater than the 6th preset value, then judges the corresponding refrigeration of the indoor unit Solenoid valve breaks down and the interior machine throttle valve of the indoor unit does not break down.Wherein, the 4th to the 6th preset value can be according to reality Border situation is demarcated, for example, the 4th preset value A4 can for 3 DEG C, the 5th preset value A5 can be 3 DEG C and the 6th preset value A6 It can be 15 DEG C.
Specifically, after the interior machine throttle valve or corresponding refrigeration solenoid valve for judging i-th of indoor unit break down, First remaining indoor unit that can be worked normally in closing system in addition to i-th of indoor unit, so that refrigerant is all from i-th of interior Machine flows through, and guarantees that the coolant quantity of the indoor unit is sufficient, will not cause to judge by accident because of bias current or scarce refrigerant.
When detecting the T2b-T2a > A3 of i-th of indoor unit, according to PI (Proportional Integral, ratio Integral) control logic, the interior machine throttle valve for needing to control the indoor unit is opened always greatly, but if the state does not change, then Machine throttle valve is practical in illustrating then reports the interior machine throttle valve failure of indoor unit, cannot normally open greatly without just normally opened, and shunts Refrigeration solenoid valve in device is normal；As T2b-T2a < A4 and T1-T2a the < A5 for detecting i-th of indoor unit, or detection To i-th of indoor unit T2a-Tps3 (the corresponding saturation temperature of the low pressure of part flow arrangement) > A6 when, the interior machine of indoor unit Throttle valve can control minimum aperture needed for gradually closing refrigeration, but if interior pusher side is blocked by refrigeration solenoid valve, nothing according to PI Method circulation, then can be completely in system high pressure area, report the refrigeration solenoid valve failure of part flow arrangement at this time, cannot normally open, and The interior machine throttle valve of indoor unit is normal.
Further, as shown in figure 4, link fault detection method when multi-line system is in refrigeration full-gear It can comprise the following steps that
S101, multi-line system be in refrigeration standard-sized sheet operating status when, detect the T1-T2a < A1 of i-th of indoor unit and T1-T2b < A1, the T1-T2a > A2 of remaining indoor unit.
S102, the interior machine throttle valve or corresponding refrigeration solenoid valve of i-th indoor unit break down.
S103 closes remaining indoor unit, so that refrigerant is all flowed through from i-th of indoor unit.
S104 detects T2b-T2a > A3.
S105, by PI control logic, the interior machine throttle valve for needing to control the indoor unit is opened always greatly, but practical abnormal It opens big.
S106, reports the interior machine throttle valve failure of indoor unit, and corresponding refrigeration solenoid valve is normal.
S107 detects T2b-T2a < A4 and T1-T2a < A5 or T2a-Tps3 > A6.
S108 is controlled according to PI, interior machine throttle valve is gradually closed to minimum aperture, if interior pusher side is by refrigeration electromagnetism valve plug Firmly, it can not circulate, then can be completely in system high pressure area.
S109 reports the interior machine throttle valve of indoor unit normal, corresponding refrigeration solenoid valve failure.
Therefore, linkage fault detection method according to an embodiment of the present invention first can position refrigeration event according to decision condition Whether barrier pipeline breaks down, and is specifically then which valve body breaks down further according to decision condition positioning, to transport in system During row, whether the interior machine throttle valve of the cold solenoid valve of heat and indoor unit of rapidly and effectively judging part flow arrangement occurs event Barrier, to guarantee system safe and reliable operation.
S3, if multi-line system is in heating standard-sized sheet operating status, according to the current indoor environment of each indoor unit Temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior machine throttle valve of each indoor unit and every Whether the corresponding heating solenoid valve of a indoor unit breaks down.
According to one embodiment of present invention, according to the current indoor environment temperature of each indoor unit, each indoor unit The inlet temperature and outlet temperature of indoor heat exchanger judges the interior machine throttle valve and the corresponding system of each indoor unit of each indoor unit Whether thermoelectrical magnetic valve breaks down, comprising: if the outlet temperature of indoor heat exchanger and the indoor unit works as in i-th of indoor unit Inlet temperature of the difference less than indoor heat exchanger in the 7th preset value and the indoor unit and the room between preceding indoor environment temperature The interior of difference between the current indoor environment temperature of interior machine less than each indoor unit in the 7th preset value and remaining indoor unit Difference between the outlet temperature of heat exchanger and corresponding current indoor environment temperature is greater than the 8th preset value, then judges i-th The interior machine throttle valve of indoor unit or corresponding heating solenoid valve break down.Wherein, the 7th preset value and the 8th preset value can It is demarcated according to the actual situation, for example, the 7th preset value A7 can be 3 DEG C, the 8th preset value A8 can be 12 DEG C.
It specifically, can as shown in Fig. 2, when multi-line system is in heating standard-sized sheet operating status and system does not owe refrigerant According to the current indoor environment temperature T1 of each indoor unit, the inlet temperature T2b of the indoor heat exchanger of each indoor unit and out Mouth temperature T2a judges whether the interior machine throttle valve of each indoor unit and the corresponding refrigeration solenoid valve of each indoor unit break down. As T2b-T1 < A7 and T2a-T1 the < A7 for detecting i-th of indoor unit, and the T2b-T1 > A8 of remaining indoor unit, then illustrate Refrigerant unsmooth flowing in i indoor unit, remaining indoor unit is normal, may determine that at this time may be the indoor unit interior machine throttling Valve breaks down, it is also possible to which the heating solenoid valve of part flow arrangement corresponding with the indoor unit breaks down.
In order to further judge the interior machine throttle valve of i-th of indoor unit or the heating solenoid valve of corresponding part flow arrangement It breaks down, in one embodiment of the invention, in the interior machine throttle valve for judging i-th of indoor unit or corresponding heating electricity After magnet valve breaks down, further includes: control remaining indoor unit and be turned off, and judge indoor heat exchanger in i-th of indoor unit Whether the difference between inlet temperature and the current indoor environment temperature of the indoor unit is greater than in the 9th preset value and the indoor unit Whether the difference between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is less than the tenth preset value. If the difference in the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is greater than In 9th preset value and the indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Difference then judges that the interior machine throttle valve of the indoor unit breaks down and the corresponding heating of the indoor unit is electric less than the tenth preset value Magnet valve does not break down.Wherein, the 9th preset value and the tenth preset value can be demarcated according to the actual situation, for example, the 9th is pre- If value A9 can be 12 DEG C, the tenth preset value A10 can be 3 DEG C.
Further, it is broken down in the interior machine throttle valve or corresponding heating solenoid valve for judging i-th of indoor unit Afterwards, further includes: control remaining indoor unit and be turned off, and judge the outlet temperature of indoor heat exchanger and the room in i-th of indoor unit Whether the difference between the current indoor environment temperature of interior machine is less than indoor heat exchanger in the 11st preset value and the indoor unit Whether the difference between inlet temperature and the current indoor environment temperature of the indoor unit is less than the 12nd preset value and preset time Whether the corresponding saturation temperature rise of the high-pressure of interior part flow arrangement is greater than the 13rd preset value.If room in the indoor unit Difference between the outlet temperature of interior heat exchanger and the current indoor environment temperature of the indoor unit less than the 11st preset value and is somebody's turn to do Difference in indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is less than the 12nd The corresponding saturation temperature rise of the high-pressure of part flow arrangement is greater than the 13rd preset value in preset value and preset time, then Judge that the corresponding heating solenoid valve of the indoor unit breaks down and the interior machine throttle valve of the indoor unit does not break down.Wherein, 11 to the 13rd preset values, preset time can be demarcated according to the actual situation, for example, the 11st preset value A11 can be 3 DEG C, the 12nd preset value A12 can for 3 DEG C and the 13rd preset value A13 can be 10 DEG C, preset time can be 1min.
Specifically, after the interior machine throttle valve or corresponding heating solenoid valve for judging i-th of indoor unit break down, The first other indoor units that can be worked normally in closing system in addition to i-th of indoor unit, so that refrigerant is all from i-th of interior Machine flows through, and guarantees that the coolant quantity of the indoor unit is sufficient, will not cause to judge by accident because of bias current or scarce refrigerant.
When detecting T2b-T1 > A9 and T2a-T1 the < A10 of i-th of indoor unit, judge that the import for heating indoor unit is logical Freely, but the flow of heating indoor unit is too small, and the degree of supercooling for heating indoor unit is very big, controls according to PI, needs to control the indoor unit Interior machine throttle valve do not turn off greatly, but it is practical do not open big, system is blocked, the interior machine throttle valve failure of this Times indoor unit, It cannot normally open, and the heating solenoid valve in part flow arrangement is normal；As the T2b-T1 < A11 for detecting i-th of indoor unit and The rise > A13 of the corresponding saturation temperature Tps1 of high-pressure of part flow arrangement, then heat in T2a-T1 < A12 and 1min The import of indoor unit is unsmooth, and system is blocked by heating solenoid valve, reports the heating solenoid valve failure of part flow arrangement at this time, cannot be normal It opens, and the interior machine throttle valve of indoor unit is normal.
Further, as shown in figure 5, link fault detection method when multi-line system is in heating full-gear It can comprise the following steps that
S201, multi-line system be in heating standard-sized sheet operating status when, detect the T2b-T1 < A7 of i-th of indoor unit and T2a-T1 < A7, and the T2b-T1 > A8 of remaining indoor unit.
S202, the interior machine throttle valve of i-th indoor unit or corresponding heating solenoid valve break down.
S203 closes other indoor units, so that refrigerant is all flowed through from i-th of indoor unit.
S204 detects T2b-T1 > A9 and T2a-T1 < A10.
S205 is controlled according to PI, and the interior machine throttle valve for needing to control the indoor unit does not turn off greatly, but reality is not opened greatly, System is blocked.
S206, reports the interior machine throttle valve failure of indoor unit, and corresponding heating solenoid valve is normal.
S207 detects that the high-pressure of part flow arrangement in T2b-T1 < A11 and T2a-T1 < A12 and 1min is corresponding full With the rise > A13 of temperature Tps1.
S208, the import for heating indoor unit is unsmooth, and system is blocked by heating solenoid valve.
S209 reports the interior machine throttle valve of indoor unit normal, corresponding heating solenoid valve failure.
Therefore, linkage fault detection method according to an embodiment of the present invention first can position heating event according to decision condition Whether barrier pipeline breaks down, and is specifically then which valve body breaks down further according to decision condition positioning, to transport in system During row, whether the interior machine throttle valve of the heating solenoid valve and indoor unit of rapidly and effectively judging part flow arrangement occurs event Barrier, to guarantee system safe and reliable operation.
In conclusion the solenoid valve of interior machine throttle valve and part flow arrangement in multi-line system according to an embodiment of the present invention Link fault detection method, first determines whether multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operation shape State, if multi-line system is in refrigeration standard-sized sheet operating status, according to the current indoor environment temperature of each indoor unit, each The inlet temperature and outlet temperature of the indoor heat exchanger of indoor unit judges the interior machine throttle valve and each indoor unit of each indoor unit Whether corresponding refrigeration solenoid valve breaks down；If multi-line system is in heating standard-sized sheet operating status, according to each room Current indoor environment temperature, the inlet temperature and outlet temperature of the indoor heat exchanger of each indoor unit of interior machine judge each interior Whether the interior machine throttle valve and the corresponding heating solenoid valve of each indoor unit of machine break down.This method can be in multi-line system In operational process, rapidly and effectively judge whether the throttle valve of solenoid valve and indoor unit in part flow arrangement breaks down, To guarantee the safe and reliable operation of system.
Carry out the multi-line system of the present invention is described in detail embodiment with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the multi-line system of the embodiment of the present invention includes outdoor unit 100, N number of indoor unit 200, divides Flow device 300 and control module (not specifically illustrated in figure).
Wherein, each indoor unit in N number of indoor unit 200 includes indoor heat exchanger and interior machine throttle valve, part flow arrangement 300 include connected N number of refrigeration solenoid valve corresponding with N number of indoor unit 200 and N number of heating solenoid valve, N are positive integer.
Specifically, N number of indoor unit includes the first indoor unit to N indoor unit, indoor unit can with extra four fewer than Four, the number of specific required indoor unit need to be determined according to the actual situation, also, the number of indoor unit is to part flow arrangement The tool such as number of the number, the number of heating solenoid valve of refrigeration solenoid valve, the number for the check valve that freezes and heating check valve in 300 There is decisive role.
Here it is illustrated with four indoor units 210,220,230 and 240.Specifically, as depicted in figs. 1 and 2, it is more On-line system may include outdoor unit 100, the first indoor unit 210, the second indoor unit 220, machine in third indoor unit 230 and fourth ventricle 240 and part flow arrangement 300.Wherein, outdoor unit 100 may include compressor 101 and fluid reservoir 102.First indoor unit 210 includes Indoor heat exchanger 211 and interior machine throttle valve 212, the second indoor unit 220 include indoor heat exchanger 221 and interior machine throttle valve 222, the Three indoor units 230 include indoor heat exchanger 231 and interior machine throttle valve 232, and machine 240 includes indoor heat exchanger in fourth ventricle 241 and interior machine throttle valve 242.
Part flow arrangement 300 may include gas-liquid separator 301, First Heat Exchanger 302, the heat exchange of first throttle element 304, second Device 303, the second restricting element 305, refrigeration solenoid valve 310,311,312 and 313, heating solenoid valve 306,307,308 and 309, Freeze check valve 318,319,320 and 321 and heating check valve 314,315,316 and 317.Wherein, gas-liquid separator 301 Entrance is connected with one end of outdoor unit 100, and the first heat exchange of the liquid outlet and First Heat Exchanger 302 of gas-liquid separator 301 is flowed The entrance on road is connected.One end of first throttle element 304 is connected with the outlet of the first heat exchange flow path of First Heat Exchanger 302 It is logical, the entrance of the first heat exchange flow path of the other end of first throttle element 304 and the second heat exchanger 303, heat check valve 306, 307,308 are connected with 309 one end.First heat exchange flow path of one end of the second restricting element 305 and the second heat exchanger 303 Outlet, refrigeration check valve 318,319,320 are connected with 321 one end, the entrance of the second heat exchange flow path of the second heat exchanger 303 It is connected with the other end of the second restricting element 305, the outlet of the second heat exchange flow path of the second heat exchanger 303 and First Heat Exchanger The entrance of 302 the second heat exchange flow path is connected.The outlet of second heat exchange flow path of First Heat Exchanger 302 and refrigeration solenoid valve 310,311,312 are connected with the other end of 313, outdoor unit 100, and refrigeration check valve 318,319,320 and 321, heating are unidirectional The other end of valve 306,307,308 and 309 is connected with corresponding four indoor units 210,220,230 and 240, gas-liquid separator 301 gas vent is connected with one end of heating solenoid valve 306,307,308 and 309, and freeze 310,311,312 and of solenoid valve 313, the other end of heating solenoid valve 306,307,308 and 309 is connected with corresponding indoor unit 210,220,230 and 240.
Control module is for judging whether multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operation shape State.If multi-line system is in refrigeration standard-sized sheet operating status, according to the current indoor environment of each indoor unit if control module Temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior machine throttle valve of each indoor unit and every Whether the corresponding refrigeration solenoid valve of a indoor unit breaks down；If multi-line system is in heating standard-sized sheet operating status, control Module is then according to the current indoor environment temperature of each indoor unit, the inlet temperature and outlet of the indoor heat exchanger of each indoor unit Temperature judges whether the interior machine throttle valve of each indoor unit and the corresponding heating solenoid valve of each indoor unit break down.
According to one embodiment of present invention, control module is according to the current indoor environment temperature of each indoor unit, each The inlet temperature and outlet temperature of the indoor heat exchanger of indoor unit judges the interior machine throttle valve and each indoor unit of each indoor unit When whether corresponding refrigeration solenoid valve breaks down, wherein if the current indoor environment temperature of i-th of indoor unit and the interior The current indoor environment temperature of difference in machine between the inlet temperature of indoor heat exchanger less than the first preset value and the indoor unit With the difference in the indoor unit between the outlet temperature of indoor heat exchanger less than each room in the first preset value and remaining indoor unit Difference between the current indoor environment temperature of interior machine and the inlet temperature of corresponding indoor heat exchanger is greater than the second preset value, control Molding block then judges that interior machine throttle valve or corresponding refrigeration solenoid valve in i-th of indoor unit break down, wherein i=1, 2,3 ..., N, wherein the first preset value A1 can be 3 DEG C, and the second preset value A2 can be 6 DEG C.
It specifically, can as shown in Figure 1, when multi-line system is in refrigeration standard-sized sheet operating status and system does not owe refrigerant According to the current indoor environment temperature T1 of each indoor unit, the inlet temperature T2a of the indoor heat exchanger of each indoor unit and out Mouth temperature T2b judges whether the interior machine throttle valve of each indoor unit and the corresponding refrigeration solenoid valve of each indoor unit break down. When detecting i-th of indoor unit, if T1-T2a < A1 and T1-T2b the < A1 of i-th of indoor unit, illustrate the temperature-sensitive of T2a Packet illustrates in i-th of indoor unit in normal operating conditions at this time if detecting the T1-T2a > A2 of remaining indoor unit Refrigerant unsmooth flowing, and remaining indoor unit is normal may determine that may be that the interior machine throttle valve of the indoor unit breaks down at this time, It is also likely to be that the refrigeration solenoid valve of part flow arrangement 300 corresponding with the indoor unit breaks down.
In order to further judge the interior machine throttle valve of i-th of indoor unit or the refrigeration solenoid valve of corresponding part flow arrangement It breaks down, according to one embodiment of present invention, control module is in the interior machine throttle valve or correspondence for judging i-th of indoor unit Refrigeration solenoid valve break down after, also control remaining indoor unit and be turned off, and judge indoor heat exchanger in i-th of indoor unit Outlet temperature and the indoor unit in indoor heat exchanger inlet temperature between difference whether be greater than third preset value, wherein If the difference in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Greater than third preset value, control module then judges that the interior machine throttle valve of the indoor unit breaks down and the corresponding system of the indoor unit Cold solenoid valve does not break down.Wherein, third preset value A3 can be 8 DEG C.
Further, control module is sent out in the interior machine throttle valve for judging i-th of indoor unit or corresponding refrigeration solenoid valve It after raw failure, also controls remaining indoor unit and is turned off, and judge the outlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference in indoor unit between the inlet temperature of indoor heat exchanger is less than the 4th preset value and the current indoor of the indoor unit Whether the difference in environment temperature and the indoor unit between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judgement It is pre- whether the difference between temperature at the current indoor environment temperature of the indoor unit and the low pressure of part flow arrangement 300 is greater than the 6th If value, wherein if in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit indoor heat exchanger inlet temperature Between difference less than indoor heat exchanger in the current indoor environment temperature of the 4th preset value and the indoor unit and the indoor unit Difference between inlet temperature is less than the current indoor environment temperature of the 5th preset value or the indoor unit and part flow arrangement 300 Low pressure at temperature between difference be greater than the 6th preset value, control module then judges the corresponding refrigeration solenoid valve of the indoor unit It breaks down and the interior machine throttle valve of the indoor unit does not break down.Wherein, the 4th preset value A4 can preset for 3 DEG C, the 5th Value A5 can be able to be 15 DEG C for 3 DEG C and the 6th preset value A6.
Specifically, after the interior machine throttle valve or corresponding refrigeration solenoid valve for judging i-th of indoor unit break down, First remaining indoor unit that can be worked normally in closing system in addition to i-th of indoor unit of control module so that refrigerant all from I-th of indoor unit flows through, and guarantees that the coolant quantity of the indoor unit is sufficient, will not cause to judge by accident because of bias current or scarce refrigerant.
When detecting the T2b-T2a > A3 of i-th of indoor unit, according to PI (Proportional Integral, ratio Integral) control logic, the interior machine throttle valve for needing to control the indoor unit is opened always greatly, but if the state does not change, then Machine throttle valve is practical without just normally opened big in illustrating, control module then reports the interior machine throttle valve failure of indoor unit, cannot normally beat It opens, and the refrigeration solenoid valve in part flow arrangement 300 is normal；As the T2b-T2a < A4 and T1-T2a < for detecting i-th of indoor unit A5, or detect T2a-Tps3 (the corresponding saturation temperature of the low pressure of part flow arrangement 300) > A6 of i-th of indoor unit When, the interior machine throttle valve of indoor unit can control minimum aperture needed for gradually closing refrigeration according to PI, but if interior pusher side is made Cold solenoid valve is blocked, and can not be circulated, then can be completely in system high pressure area, at this time the refrigeration of control module report part flow arrangement 300 Solenoid valve failure cannot be opened normally, and the interior machine throttle valve of indoor unit is normal.
Therefore, control module first can position whether refrigeration defective pipe break down according to decision condition, then root again It is specifically which valve body breaks down according to decision condition positioning, to rapidly and effectively judge in system operation Whether the cold solenoid valve of heat of part flow arrangement and the interior machine throttle valve of indoor unit break down, to guarantee that system is securely and reliably transported Row.
According to one embodiment of present invention, control module is according to the current indoor environment temperature of each indoor unit, each The inlet temperature and outlet temperature of the indoor heat exchanger of indoor unit judges the interior machine throttle valve and each indoor unit of each indoor unit When whether corresponding heating solenoid valve breaks down, wherein if in i-th of indoor unit the outlet temperature of indoor heat exchanger with should The entrance of difference between the current indoor environment temperature of indoor unit less than indoor heat exchanger in the 7th preset value and the indoor unit Difference between temperature and the current indoor environment temperature of the indoor unit is less than each room in the 7th preset value and remaining indoor unit Difference between the outlet temperature of the indoor heat exchanger of interior machine and corresponding current indoor environment temperature is greater than the 8th preset value, control Molding block then judges that the interior machine throttle valve of i-th of indoor unit or corresponding heating solenoid valve break down.Wherein, the 7th is default Value A7 can be 3 DEG C, and the 8th preset value A8 can be 12 DEG C.
Specifically, as shown in Fig. 2, when multi-line system is in heating standard-sized sheet operating status and system does not owe refrigerant, control Molding block can be according to the entrance temperature of the current indoor environment temperature T1 of each indoor unit, the indoor heat exchanger of each indoor unit Degree T2b and outlet temperature T2a judge each indoor unit interior machine throttle valve and the corresponding refrigeration solenoid valve of each indoor unit whether It breaks down.As T2b-T1 < A7 and T2a-T1 the < A7 for detecting i-th of indoor unit, and the T2b-T1 > of remaining indoor unit A8 then illustrates the refrigerant unsmooth flowing in i-th of indoor unit, remaining indoor unit is normal, may determine that may be the interior at this time The interior machine throttle valve of machine breaks down, it is also possible to which event occurs for the heating solenoid valve of part flow arrangement 300 corresponding with the indoor unit Barrier.
In order to further judge the interior machine throttle valve of i-th of indoor unit or the heating solenoid valve of corresponding part flow arrangement It breaks down, according to one embodiment of present invention, control module is in the interior machine throttle valve or correspondence for judging i-th of indoor unit Heating solenoid valve break down after, also control remaining indoor unit and be turned off, and judge indoor heat exchanger in i-th of indoor unit Inlet temperature and the indoor unit current indoor environment temperature between difference whether be greater than the 9th preset value and the indoor unit Whether the difference between the outlet temperature of middle indoor heat exchanger and the current indoor environment temperature of the indoor unit is default less than the tenth Value, wherein if in the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Difference is greater than the current indoor environment temperature of the outlet temperature of indoor heat exchanger and the indoor unit in the 9th preset value and the indoor unit For difference between degree less than the tenth preset value, control module then judges that the interior machine throttle valve of the indoor unit breaks down and the room The corresponding heating solenoid valve of interior machine does not break down.Wherein, the 9th preset value A9 can be 12 DEG C, and the tenth preset value A10 can be with It is 3 DEG C.
Further, control module is sent out in the interior machine throttle valve for judging i-th of indoor unit or corresponding heating solenoid valve It after raw failure, also controls remaining indoor unit and is turned off, and judge the outlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference between the current indoor environment temperature of indoor unit is less than indoor heat exchanger in the 11st preset value and the indoor unit Inlet temperature and the indoor unit current indoor environment temperature between difference whether less than the 12nd preset value and it is default when Whether the temperature increase amount at the high pressure of interior part flow arrangement 300 is greater than the 13rd preset value, wherein if room in the indoor unit Difference between the outlet temperature of interior heat exchanger and the current indoor environment temperature of the indoor unit less than the 11st preset value and is somebody's turn to do Difference in indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit is less than the 12nd Temperature increase amount in preset value and preset time at the high pressure of part flow arrangement 300 is greater than the 13rd preset value, and control module is then Judge that the corresponding heating solenoid valve of the indoor unit breaks down and the interior machine throttle valve of the indoor unit does not break down.Wherein, 11 preset value A11 can for 3 DEG C, the 12nd preset value A12 can be 3 DEG C and the 13rd preset value A13 can be 10 DEG C, in advance If the time can be 1min.
Specifically, after the interior machine throttle valve or corresponding heating solenoid valve for judging i-th of indoor unit break down, The first other indoor units that can be worked normally in closing system in addition to i-th of indoor unit of control module so that refrigerant all from I-th of indoor unit flows through, and guarantees that the coolant quantity of the indoor unit is sufficient, will not cause to judge by accident because of bias current or scarce refrigerant.
When detecting T2b-T1 > A9 and T2a-T1 the < A10 of i-th of indoor unit, judge that the import for heating indoor unit is logical Freely, but the flow of heating indoor unit is too small, and the degree of supercooling for heating indoor unit is very big, controls according to PI, needs to control the indoor unit Interior machine throttle valve do not turn off greatly, but it is practical do not open big, system is blocked, at this time the interior machine throttling of control module report indoor unit Valve failure cannot be opened normally, and the heating solenoid valve in part flow arrangement 300 is normal；As the T2b- for detecting i-th of indoor unit The rise of the corresponding saturation temperature Tps1 of high-pressure of part flow arrangement 300 in T1 < A11 and T2a-T1 < A12 and 1min > A13, then the import for heating indoor unit is unsmooth, and system is blocked by heating solenoid valve, at this time control module report part flow arrangement 300 Heating solenoid valve failure cannot be opened normally, and the interior machine throttle valve of indoor unit is normal.
Therefore, control module first can position whether heating defective pipe break down according to decision condition, then root again It is specifically which valve body breaks down according to decision condition positioning, to rapidly and effectively judge in system operation Whether the heating solenoid valve of part flow arrangement and the interior machine throttle valve of indoor unit break down, to guarantee that system is securely and reliably transported Row.
Multi-line system according to an embodiment of the present invention, it is complete that control module first determines whether multi-line system is in refrigeration Open shop state or heating standard-sized sheet operating status, if multi-line system is in refrigeration standard-sized sheet operating status, if control module Sentenced according to the inlet temperature and outlet temperature of the current indoor environment temperature of each indoor unit, the indoor heat exchanger of each indoor unit Break the interior machine throttle valve of each indoor unit and whether the corresponding refrigeration solenoid valve of each indoor unit breaks down；If multi-connected machine system System is in heating standard-sized sheet operating status, and control module is then according to the current indoor environment temperature of each indoor unit, each indoor unit The inlet temperature and outlet temperature of indoor heat exchanger judge that the interior machine throttle valve of each indoor unit and each indoor unit are corresponding Whether heating solenoid valve breaks down.The system can quickly and efficiently detect shunting in multi-line system operational process Whether the throttle valve of solenoid valve and indoor unit in device breaks down, to guarantee the safe and reliable operation of multi-line system.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the One ", the feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (14)

1. the linkage fault detection method of the solenoid valve of interior machine throttle valve and part flow arrangement, feature exist in a kind of multi-line system In the multi-line system includes outdoor unit, N number of indoor unit and part flow arrangement, and each indoor unit in N number of indoor unit is equal Including indoor heat exchanger and interior machine throttle valve, the part flow arrangement includes connected N number of refrigeration electricity corresponding with N number of indoor unit Magnet valve and N number of heating solenoid valve, wherein N is positive integer, be the described method comprises the following steps:
Judge whether the multi-line system is in refrigeration standard-sized sheet operating status or heating standard-sized sheet operating status；
If the multi-line system is in the refrigeration standard-sized sheet operating status, according to the current indoor of each indoor unit Environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior machine section of each indoor unit Whether stream valve and the corresponding refrigeration solenoid valve of each indoor unit break down；And
If the multi-line system is in the heating standard-sized sheet operating status, according to the current indoor of each indoor unit Environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge the interior machine section of each indoor unit Whether stream valve and the corresponding heating solenoid valve of each indoor unit break down.
2. the method as described in claim 1, which is characterized in that the current indoor environment temperature according to each indoor unit Degree, each indoor unit indoor heat exchanger inlet temperature and outlet temperature judge each indoor unit interior machine throttle valve and Whether the corresponding refrigeration solenoid valve of each indoor unit breaks down, comprising:
If the difference in the current indoor environment temperature of i-th indoor unit and the indoor unit between the inlet temperature of indoor heat exchanger It is worth the outlet temperature less than indoor heat exchanger in the current indoor environment temperature of the first preset value and the indoor unit and the indoor unit Between difference be less than in first preset value and remaining indoor unit the current indoor environment temperature of each indoor unit and corresponding Indoor heat exchanger inlet temperature between difference be greater than the second preset value, then judge the interior machine section of i-th of indoor unit Stream valve or corresponding refrigeration solenoid valve break down, wherein i=1,2,3 ..., N.
3. method according to claim 2, which is characterized in that in the interior machine throttle valve for judging i-th of indoor unit or After corresponding refrigeration solenoid valve breaks down, further includes:
It controls remaining described indoor unit to be turned off, and judges the outlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference in indoor unit between the inlet temperature of indoor heat exchanger is greater than third preset value；
If in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference is greater than the third preset value, then judges that the interior machine throttle valve of the indoor unit breaks down and the corresponding system of the indoor unit Cold solenoid valve does not break down.
4. method as claimed in claim 2 or claim 3, which is characterized in that in the interior machine throttle valve for judging i-th of indoor unit or After the corresponding refrigeration solenoid valve of person breaks down, further includes:
It controls remaining described indoor unit to be turned off, and judges the outlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference in indoor unit between the inlet temperature of indoor heat exchanger is less than the 4th preset value and the current indoor of the indoor unit Whether the difference in environment temperature and the indoor unit between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judgement Difference in the indoor unit between the inlet temperature of indoor heat exchanger saturation temperature corresponding with the low pressure of the part flow arrangement Whether value is greater than the 6th preset value；
If in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference is less than the 4th preset value and the current indoor environment temperature of the indoor unit and enters with indoor heat exchanger in the indoor unit Difference between mouth temperature is less than the inlet temperature of indoor heat exchanger in the 5th preset value or the indoor unit and described point The difference flowed between the corresponding saturation temperature of low pressure of device is greater than the 6th preset value, then judges that the indoor unit is corresponding Refrigeration solenoid valve break down and the interior machine throttle valve of the indoor unit does not break down.
5. the method as described in claim 1, which is characterized in that the current indoor environment temperature according to each indoor unit Degree, each indoor unit indoor heat exchanger inlet temperature and outlet temperature judge each indoor unit interior machine throttle valve and Whether the corresponding heating solenoid valve of each indoor unit breaks down, comprising:
If the difference in i-th of indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit It is worth the current indoor environment temperature of the inlet temperature and the indoor unit less than indoor heat exchanger in the 7th preset value and the indoor unit Between difference be less than in the 7th preset value and remaining indoor unit the outlet temperature of the indoor heat exchanger of each indoor unit with Difference between corresponding current indoor environment temperature is greater than the 8th preset value, then judges the interior machine section of i-th of indoor unit Stream valve or corresponding heating solenoid valve break down, wherein i=1,2,3 ..., N.
6. method as claimed in claim 5, which is characterized in that in the interior machine throttle valve for judging i-th of indoor unit or After corresponding heating solenoid valve breaks down, further includes:
It controls remaining described indoor unit to be turned off, and judges the inlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference between the current indoor environment temperature of indoor unit is greater than indoor heat exchanger in the 9th preset value and the indoor unit Whether the difference between outlet temperature and the current indoor environment temperature of the indoor unit is less than the tenth preset value；
If the difference in the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Greater than the outlet temperature of indoor heat exchanger in the 9th preset value and the indoor unit and the current indoor environment temperature of the indoor unit Difference between degree is less than the tenth preset value, then judges that the interior machine throttle valve of the indoor unit breaks down and the indoor unit Corresponding heating solenoid valve does not break down.
7. such as method described in claim 5 or 6, which is characterized in that in the interior machine throttle valve for judging i-th of indoor unit or After the corresponding heating solenoid valve of person breaks down, further includes:
It controls remaining described indoor unit to be turned off, and judges the outlet temperature of indoor heat exchanger in i-th of indoor unit and be somebody's turn to do Whether the difference between the current indoor environment temperature of indoor unit is less than indoor heat exchanger in the 11st preset value and the indoor unit Inlet temperature and the indoor unit current indoor environment temperature between difference whether less than the 12nd preset value and it is default when Whether the corresponding saturation temperature rise of the high-pressure of the interior part flow arrangement is greater than the 13rd preset value；
If the difference in the indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Less than the inlet temperature of indoor heat exchanger in the 11st preset value and the indoor unit and the current indoor environment of the indoor unit The high-pressure that difference between temperature is less than the part flow arrangement in the 12nd preset value and the preset time is corresponding Saturation temperature rise be greater than the 13rd preset value, then judge the corresponding heating solenoid valve of the indoor unit break down, And the interior machine throttle valve of the indoor unit does not break down.
8. a kind of multi-line system characterized by comprising
Outdoor unit；
N number of indoor unit, each indoor unit in N number of indoor unit includes indoor heat exchanger and interior machine throttle valve, wherein N For positive integer；
Part flow arrangement, the part flow arrangement include connected N number of refrigeration solenoid valve corresponding with N number of indoor unit and N number of heating Solenoid valve；
Control module, the control module is for judging whether the multi-line system is in refrigeration standard-sized sheet operating status or system Hot standard-sized sheet operating status, wherein if the multi-line system is in the refrigeration standard-sized sheet operating status, if the control module According to the current indoor environment temperature of each indoor unit, the inlet temperature of the indoor heat exchanger of each indoor unit and outlet temperature Degree judges whether the interior machine throttle valve of each indoor unit and the corresponding refrigeration solenoid valve of each indoor unit break down； If the multi-line system is in the heating standard-sized sheet operating status, according to each indoor unit if the control module Current indoor environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge each indoor unit Interior machine throttle valve and the corresponding heating solenoid valve of each indoor unit whether break down.
9. multi-line system as claimed in claim 8, which is characterized in that the control module is according to each indoor unit Current indoor environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge each indoor unit Interior machine throttle valve and each indoor unit corresponding refrigeration solenoid valve when whether breaking down, wherein
If the difference in the current indoor environment temperature of i-th indoor unit and the indoor unit between the inlet temperature of indoor heat exchanger It is worth the outlet temperature less than indoor heat exchanger in the current indoor environment temperature of the first preset value and the indoor unit and the indoor unit Between difference be less than in first preset value and remaining indoor unit the current indoor environment temperature of each indoor unit and corresponding Indoor heat exchanger inlet temperature between difference be greater than the second preset value, the control module then judges i-th of Room Interior machine throttle valve or corresponding refrigeration solenoid valve in interior machine break down, wherein i=1,2,3 ..., N.
10. multi-line system as claimed in claim 9, which is characterized in that the control module is judging i-th of interior After the interior machine throttle valve of machine or corresponding refrigeration solenoid valve break down, also controls remaining described indoor unit and be turned off, and Judge in i-th of indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference whether be greater than third preset value, wherein
If in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference is greater than the third preset value, and the control module then judges that the interior machine throttle valve of the indoor unit breaks down and the room The corresponding refrigeration solenoid valve of interior machine does not break down.
11. the multi-line system as described in claim 9 or 10, which is characterized in that the control module is judging described i-th After the interior machine throttle valve of indoor unit or corresponding refrigeration solenoid valve break down, also controls remaining described indoor unit and close It closes, and judges the entrance temperature of the outlet temperature of indoor heat exchanger and indoor heat exchanger in the indoor unit in i-th of indoor unit Whether the difference between degree changes less than the current indoor environment temperature of the 4th preset value and the indoor unit and interior in the indoor unit Whether the difference between the inlet temperature of hot device is less than the 5th preset value, or judges the current indoor environment temperature of the indoor unit Whether the difference between saturation temperature corresponding with the low pressure of the part flow arrangement is greater than the 6th preset value, wherein
If in the indoor unit in the outlet temperature of indoor heat exchanger and the indoor unit between the inlet temperature of indoor heat exchanger Difference is less than the 4th preset value and the current indoor environment temperature of the indoor unit and enters with indoor heat exchanger in the indoor unit Difference between mouth temperature is less than the current indoor environment temperature of the 5th preset value or the indoor unit and the shunting fills Difference between the corresponding saturation temperature of the low pressure set is greater than the 6th preset value, and the control module then judges the room The corresponding refrigeration solenoid valve of interior machine breaks down and the interior machine throttle valve of the indoor unit does not break down.
12. multi-line system as claimed in claim 8, which is characterized in that the control module is according to each indoor unit Current indoor environment temperature, the inlet temperature and outlet temperature of indoor heat exchanger of each indoor unit judge each interior When whether the interior machine throttle valve and the corresponding heating solenoid valve of each indoor unit of machine break down, wherein
If the difference in i-th of indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit It is worth the current indoor environment temperature of the inlet temperature and the indoor unit less than indoor heat exchanger in the 7th preset value and the indoor unit Between difference be less than in the 7th preset value and remaining indoor unit the outlet temperature of the indoor heat exchanger of each indoor unit with Difference between corresponding current indoor environment temperature is greater than the 8th preset value, and the control module then judges i-th of Room The interior machine throttle valve of interior machine or corresponding heating solenoid valve break down, wherein i=1,2,3 ..., N.
13. multi-line system as claimed in claim 12, which is characterized in that the control module is judging i-th of Room After the interior machine throttle valve of interior machine or corresponding heating solenoid valve break down, also controls remaining described indoor unit and is turned off, And judge in i-th of indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Whether difference is greater than the current indoor ring of the outlet temperature of indoor heat exchanger and the indoor unit in the 9th preset value and the indoor unit Whether the difference between the temperature of border is less than the tenth preset value, wherein
If the difference in the indoor unit between the inlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Greater than the outlet temperature of indoor heat exchanger in the 9th preset value and the indoor unit and the current indoor environment temperature of the indoor unit Difference between degree is less than the tenth preset value, and the control module then judges that event occurs for the interior machine throttle valve of the indoor unit Hinder and the corresponding heating solenoid valve of the indoor unit does not break down.
14. multi-line system as described in claim 12 or 13, which is characterized in that the control module is judging described i-th After the interior machine throttle valve of a indoor unit or corresponding heating solenoid valve break down, also controls remaining described indoor unit and close Close, and judge the outlet temperature of indoor heat exchanger and the indoor unit in i-th of indoor unit current indoor environment temperature it Between difference it is whether current less than the inlet temperature of indoor heat exchanger in the 11st preset value and the indoor unit and the indoor unit Difference between indoor environment temperature whether less than the part flow arrangement in the 12nd preset value and preset time high-pressure Whether corresponding saturation temperature rise is greater than the 13rd preset value, wherein
If the difference in the indoor unit between the outlet temperature of indoor heat exchanger and the current indoor environment temperature of the indoor unit Less than the inlet temperature of indoor heat exchanger in the 11st preset value and the indoor unit and the current indoor environment of the indoor unit The high-pressure that difference between temperature is less than the part flow arrangement in the 12nd preset value and the preset time is corresponding Saturation temperature rise be greater than the 13rd preset value, the control module then judges the corresponding heating electromagnetism of the indoor unit Valve breaks down and the interior machine throttle valve of the indoor unit does not break down.
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WO2023197711A1 (en) * 2022-04-11 2023-10-19 青岛海信日立空调系统有限公司 Multi-split air-conditioning system, fault positioning method, and fault diagnosis model training method
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005061767A (en) * 2003-08-19 2005-03-10 Matsushita Electric Ind Co Ltd Multi-chamber air conditioner
JP2005315477A (en) * 2004-04-28 2005-11-10 Hitachi Home & Life Solutions Inc Multi-chamber type air conditioner
JP2007333219A (en) * 2006-06-12 2007-12-27 Mitsubishi Electric Building Techno Service Co Ltd Multi-type air-conditioning system
CN102401447A (en) * 2011-05-24 2012-04-04 宁波奥克斯电气有限公司 Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber
CN102679646A (en) * 2012-05-25 2012-09-19 厦门大学 Freezer cabinet with safe and rapid defrosting effect
CN103528163A (en) * 2012-07-03 2014-01-22 三星电子株式会社 Diagnosis control method for an air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005061767A (en) * 2003-08-19 2005-03-10 Matsushita Electric Ind Co Ltd Multi-chamber air conditioner
JP2005315477A (en) * 2004-04-28 2005-11-10 Hitachi Home & Life Solutions Inc Multi-chamber type air conditioner
JP2007333219A (en) * 2006-06-12 2007-12-27 Mitsubishi Electric Building Techno Service Co Ltd Multi-type air-conditioning system
CN102401447A (en) * 2011-05-24 2012-04-04 宁波奥克斯电气有限公司 Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber
CN102679646A (en) * 2012-05-25 2012-09-19 厦门大学 Freezer cabinet with safe and rapid defrosting effect
CN103528163A (en) * 2012-07-03 2014-01-22 三星电子株式会社 Diagnosis control method for an air conditioner

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