CN106352472A - Multi-online system and linkage fault detection method thereof - Google Patents

Multi-online system and linkage fault detection method thereof Download PDF

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Publication number
CN106352472A
CN106352472A CN201610695755.7A CN201610695755A CN106352472A CN 106352472 A CN106352472 A CN 106352472A CN 201610695755 A CN201610695755 A CN 201610695755A CN 106352472 A CN106352472 A CN 106352472A
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China
Prior art keywords
indoor set
indoor
heat exchanger
temperature
preset value
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CN201610695755.7A
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CN106352472B (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 multi-online system and a linkage fault detection method thereof. The linkage fault detection method comprises the following steps that whether the multi-online system is in a complete refrigeration or complete heating operation state or not is judged; if the system is in the complete refrigeration operation state, whether an indoor unit throttle valve in each indoor unit and a magnetic refrigeration valve corresponding to the indoor unit throttle valve break down or not is judged according to the current indoor environment temperature of each indoor unit and the inlet temperature and outlet temperature of an indoor heat exchanger of each indoor unit; if the system is in the complete heating operation state, whether the indoor unit throttle valve in each indoor unit and a magnetic heating valve corresponding to the indoor unit throttle valve break down or not is judged according to the current indoor environment temperature of each indoor unit and the inlet temperature and outlet temperature of the indoor heat exchanger of each indoor unit. By the adoption of the method, whether a magnetic valve of a distribution device and the indoor unit throttle valves of the indoor units break down or not is rapidly and effectively judged in the operating process of the multi-online system, and safe and reliable operation of the system is ensured.

Description

Multiple on-line system and its linkage fault detection method
Technical field
The present invention relates to air-conditioning technical field, particularly to machine choke valve interior in a kind of multiple on-line system and part flow arrangement The linkage fault detection method of electromagnetic valve and a kind of multiple on-line system.
Background technology
Multiple on-line system can be freezed simultaneously and be heated, but due to its system complex, valve body is numerous, not only will have Kind control logic carrys out application valve body action, and valve body to be ensured can normal work, thus ensureing that system can for a long time may be used By running.
Generally, in multiple on-line system, the adapter of indoor set and part flow arrangement needs welded and installed, due to indoor set number of units relatively Many, corresponding solder joint is also more, in system operation it is possible to the valve body that welding slag is blocked in indoor set and part flow arrangement In, lead to valve body occur abnormal it is also possible to lead to valve body fault the problems such as because of valve body ageing failure and cannot reliably working.Cause This, under conditions of how ensureing the normal operation of system, still can rapidly and effectively detect in indoor set and part flow arrangement Whether valve body breaks down, and is technical problem urgently to be resolved hurrily at present.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
For this reason, it is an object of the present invention to proposing the electricity of interior machine choke valve and part flow arrangement in a kind of multiple on-line system The linkage fault detection method of magnet valve, the method rapidly and effectively can be judged point in multiple on-line system running Whether the interior machine choke valve of the electromagnetic valve in stream device and indoor set breaks down, thus ensureing the safe and reliable operation of system.
Further object is that proposing a kind of multiple on-line system.
For achieving the above object, one aspect of the present invention embodiment propose in a kind of multiple on-line system interior machine choke valve with point The linkage fault detection method of the electromagnetic valve of stream device, described multiple on-line system includes off-premises station, n indoor set and shunting dress Put, each indoor set in described n indoor set all includes indoor heat exchanger and interior machine choke valve, described part flow arrangement include with The corresponding n refrigeration electromagnetic valve being connected of described n indoor set and n heat electromagnetic valve, and wherein, n is positive integer, methods described bag Include following steps: judge whether described multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet running status；As Really described multiple on-line system is in described refrigeration standard-sized sheet running status, then the current indoor environment temperature according to each indoor set described Degree, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described interior machine choke valve and Whether each indoor set described corresponding refrigeration electromagnetic valve breaks down；And if described multiple on-line system be in described in heat Standard-sized sheet running status, then according to the current indoor ambient temperature of each indoor set described, the indoor heat exchanger of each indoor set Inlet temperature and outlet temperature judge that the interior machine choke valve of each indoor set described heats electromagnetic valve with each indoor set is corresponding Whether break down.
The linkage fault of the electromagnetic valve of interior machine choke valve and part flow arrangement in multiple on-line system according to embodiments of the present invention Detection method, first, it is determined that whether multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet running status, if Multiple on-line system is in refrigeration standard-sized sheet running status, then current indoor ambient temperature, each indoor set according to each indoor set The inlet temperature of indoor heat exchanger and outlet temperature judge the interior machine choke valve of each indoor set and each indoor set corresponding Whether refrigeration electromagnetic valve breaks down；If multiple on-line system is in heats standard-sized sheet running status, according to each indoor set Current indoor ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior of each indoor set With each indoor set is corresponding, machine choke valve heats whether electromagnetic valve breaks down.The method can be run in multiple on-line system Cheng Zhong, rapidly and effectively judges whether the electromagnetic valve in part flow arrangement and the interior machine choke valve of indoor set break down, from And ensure the safe and reliable operation of system.
According to one embodiment of present invention, the current indoor ambient temperature of each indoor set described in described basis, each The inlet temperature of the indoor heat exchanger of indoor set and outlet temperature judge the interior machine choke valve of each indoor set described and described every Whether individual indoor set corresponding refrigeration electromagnetic valve breaks down, comprising: if the current indoor ambient temperature of i-th indoor set with In this indoor set, the difference between the inlet temperature of indoor heat exchanger is less than the current indoor ring of the first preset value and this indoor set In border temperature and this indoor set, the difference between the outlet temperature of indoor heat exchanger is less than described first preset value and remaining is indoor In machine, the difference between the current indoor ambient temperature of each indoor set and the inlet temperature of corresponding indoor heat exchanger is more than the Two preset values, then judge that the interior machine choke valve of described i-th indoor set or corresponding refrigeration electromagnetic valve break down, wherein, i =1,2,3 ..., n.
According to one embodiment of present invention, in the interior machine choke valve judging described i-th indoor set or corresponding system After cold electromagnetic valve breaks down, also include: control remaining indoor set described to be turned off, and judge in described i-th indoor set In the outlet temperature of indoor heat exchanger and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is pre- more than the 3rd If value；If in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set between the inlet temperature of indoor heat exchanger Difference is more than described 3rd preset value, then judge that the interior machine choke valve of this indoor set breaks down and the corresponding system of this indoor set Cold electromagnetic valve does not break down.
According to one embodiment of present invention, in the interior machine choke valve judging described i-th indoor set or corresponding system After cold electromagnetic valve breaks down, also include: control remaining indoor set described to be turned off, and judge in described i-th indoor set In the outlet temperature of indoor heat exchanger and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is pre- less than the 4th If the difference between the inlet temperature of indoor heat exchanger is in the current indoor ambient temperature of value and this indoor set and this indoor set The no low pressure pressure being less than the 5th preset value, or judging the inlet temperature of indoor heat exchanger and described part flow arrangement in this indoor set Whether the difference between the corresponding saturation temperature of power is more than the 6th preset value；If the outlet temperature of indoor heat exchanger in this indoor set In degree and this indoor set, the difference between the inlet temperature of indoor heat exchanger is less than working as of described 4th preset value and this indoor set In front indoor environment temperature and this indoor set, the difference between the inlet temperature of indoor heat exchanger is less than described 5th preset value, or In this indoor set of person between the inlet temperature of indoor heat exchanger saturation temperature corresponding with the low pressure of described part flow arrangement Difference be more than described 6th preset value, then judge this indoor set corresponding refrigeration electromagnetic valve break down and this indoor set interior Machine choke valve does not break down.
According to one embodiment of present invention, the current indoor ambient temperature of each indoor set described in described basis, each The interior machine choke valve of the inlet temperature of the indoor heat exchanger of indoor set and outlet temperature judgement each indoor set described and each room Interior machine is corresponding to heat whether electromagnetic valve breaks down, comprising: if in i-th indoor set the outlet temperature of indoor heat exchanger with Difference between the current indoor ambient temperature of this indoor set is less than entering of indoor heat exchanger in the 7th preset value and this indoor set Difference between mouth temperature and the current indoor ambient temperature of this indoor set is less than in described 7th preset value and remaining indoor set It is pre- that difference between the outlet temperature of the indoor heat exchanger of each indoor set and corresponding current indoor ambient temperature is more than the 8th If value, then judge that the interior machine choke valve of described i-th indoor set or the corresponding electromagnetic valve that heats break down, wherein, i=1, 2、3、……、n.
According to one embodiment of present invention, in the interior machine choke valve judging described i-th indoor set or corresponding system After thermoelectrical magnetic valve breaks down, also include: control remaining indoor set described to be turned off, and judge in described i-th indoor set Difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set whether more than the 9th preset value, And whether the difference between the current indoor ambient temperature of the inlet temperature of indoor heat exchanger and this indoor set is little in this indoor set In the tenth preset value；If in this indoor set the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set it Between difference be more than the inlet temperature of indoor heat exchanger and this indoor set in described 9th preset value and this indoor set work as cup Difference between interior ambient temperature be less than described tenth preset value, then judge the interior machine choke valve of this indoor set break down and The corresponding electromagnetic valve that heats of this indoor set does not break down.
According to one embodiment of present invention, in the interior machine choke valve judging described i-th indoor set or corresponding system After thermoelectrical magnetic valve breaks down, also include: control remaining indoor set described to be turned off, and judge in described i-th indoor set Whether the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set is preset less than the 11st In value and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger and the current indoor ambient temperature of this indoor set Whether the high-pressure corresponding saturation temperature rise of described part flow arrangement is big less than the 12nd preset value and in Preset Time In the 13rd preset value；If the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in this indoor set Between difference be less than working as of the inlet temperature of indoor heat exchanger and this indoor set in described 11st preset value and this indoor set Difference between front indoor environment temperature is less than the height of described part flow arrangement in described 12nd preset value and described Preset Time Pressure pressure corresponding saturation temperature rise is more than described 13rd preset value, then judge that this indoor set is corresponding and heat electromagnetic valve Break down and the interior machine choke valve of this indoor set does not break down.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of multiple on-line system, comprising: off-premises station；n Individual indoor set, each indoor set in described n indoor set all includes indoor heat exchanger and interior machine choke valve, and wherein, n is just whole Number；Part flow arrangement, described part flow arrangement includes n refrigeration electromagnetic valve being connected corresponding with described n indoor set and n is individual heats electricity Magnet valve；Control module, described control module be used for judging described multiple on-line system whether be in refrigeration standard-sized sheet running status or Heat standard-sized sheet running status, wherein, if described multiple on-line system is in described refrigeration standard-sized sheet running status, described control module Then according to the current indoor ambient temperature of each indoor set described, the inlet temperature of the indoor heat exchanger of each indoor set and outlet Temperature judges whether the interior machine choke valve of each indoor set described and each indoor set described corresponding refrigeration electromagnetic valve occur event Barrier；If described multiple on-line system heats standard-sized sheet running status described in being in, described control module is then according to each interior described The current indoor ambient temperature of machine, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each room described With each indoor set is corresponding, the interior machine choke valve of interior machine heats whether electromagnetic valve breaks down.
Multiple on-line system according to embodiments of the present invention, it is complete that control module first determines whether whether multiple on-line system is in refrigeration Open shop state or heat standard-sized sheet running status, if multiple on-line system is in refrigeration standard-sized sheet running status, control module is then Sentenced according to the current indoor ambient temperature of each indoor set, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature Whether the interior machine choke valve of each indoor set disconnected and each indoor set corresponding refrigeration electromagnetic valve break down；If multi-connected machine system System is in and heats standard-sized sheet running status, control module then current indoor ambient temperature, each indoor set according to each indoor set The inlet temperature of indoor heat exchanger and outlet temperature judge the interior machine choke valve of each indoor set and each indoor set corresponding Heat whether electromagnetic valve breaks down.This system rapidly and effectively can be judged point in multiple on-line system running Whether the interior machine choke valve of the electromagnetic valve in stream device and indoor set breaks down, thus ensureing the safe and reliable operation of system.
According to one embodiment of present invention, described control module is according to the current indoor environment temperature of each indoor set described Degree, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described interior machine choke valve and When whether each indoor set described corresponding refrigeration electromagnetic valve breaks down, wherein, if the current indoor ring of i-th indoor set In border temperature and this indoor set, the difference between the inlet temperature of indoor heat exchanger is less than working as of the first preset value and this indoor set In front indoor environment temperature and this indoor set the difference between the outlet temperature of indoor heat exchanger be less than described first preset value and Difference between the current indoor ambient temperature of each indoor set and the inlet temperature of corresponding indoor heat exchanger in remaining indoor set Value is more than the second preset value, and described control module then judges interior machine choke valve or corresponding system in described i-th indoor set Cold electromagnetic valve breaks down, wherein, i=1,2,3 ..., n.
According to one embodiment of present invention, described control module is judging the interior machine choke valve of described i-th indoor set Or after corresponding refrigeration electromagnetic valve breaks down, also control remaining indoor set described to be turned off, and judge described i-th Room In the outlet temperature of indoor heat exchanger and this indoor set in interior machine, whether the difference between the inlet temperature of indoor heat exchanger is more than 3rd preset value, wherein, if the outlet temperature of indoor heat exchanger and the entering of indoor heat exchanger in this indoor set in this indoor set Difference between mouth temperature is more than described 3rd preset value, and described control module then judges that the interior machine choke valve of this indoor set occurs Fault and this indoor set corresponding refrigeration electromagnetic valve do not break down.
According to one embodiment of present invention, described control module is judging the interior machine choke valve of described i-th indoor set Or after corresponding refrigeration electromagnetic valve breaks down, also control remaining indoor set described to be turned off, and judge described i-th Room In the outlet temperature of indoor heat exchanger and this indoor set in interior machine, whether the difference between the inlet temperature of indoor heat exchanger is less than In the current indoor ambient temperature of the 4th preset value and this indoor set and this indoor set between the inlet temperature of indoor heat exchanger Whether difference is less than the 5th preset value, or judge the current indoor ambient temperature of this indoor set and the low pressure of described part flow arrangement Whether the difference between the corresponding saturation temperature of pressure is more than the 6th preset value, wherein, if indoor heat exchanger in this indoor set Outlet temperature and this indoor set in indoor heat exchanger inlet temperature between difference be less than described 4th preset value and this room In the current indoor ambient temperature of interior machine and this indoor set, the difference between the inlet temperature of indoor heat exchanger is less than the described 5th Preset value, or the current indoor ambient temperature saturation temperature corresponding with the low pressure of described part flow arrangement of this indoor set it Between difference be more than described 6th preset value, described control module then judge this indoor set corresponding refrigeration electromagnetic valve occur therefore The interior machine choke valve of barrier and this indoor set does not break down.
According to one embodiment of present invention, described control module is according to the current indoor environment temperature of each indoor set described Degree, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described interior machine choke valve and Whether each indoor set is corresponding when heating electromagnetic valve and breaking down, wherein, if indoor heat exchanger goes out in i-th indoor set Difference between mouth temperature and the current indoor ambient temperature of this indoor set is less than interior in the 7th preset value and this indoor set and changes Difference between the current indoor ambient temperature of the inlet temperature of hot device and this indoor set be less than described 7th preset value and remaining In indoor set, the difference between the outlet temperature of the indoor heat exchanger of each indoor set and corresponding current indoor ambient temperature is big In the 8th preset value, described control module then judges the interior machine choke valve of described i-th indoor set or corresponding heats electromagnetism Valve breaks down, wherein, i=1,2,3 ..., n.
According to one embodiment of present invention, described control module is judging the interior machine choke valve of described i-th indoor set Or corresponding heat after electromagnetic valve breaks down, also control remaining indoor set described to be turned off, and judge described i-th Room In interior machine, whether the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set is more than the 9th Difference between the inlet temperature of indoor heat exchanger and the current indoor ambient temperature of this indoor set in preset value and this indoor set Whether it is less than the tenth preset value, wherein, if the outlet temperature of indoor heat exchanger and this indoor set works as cup in this indoor set Difference between interior ambient temperature is more than the inlet temperature of indoor heat exchanger and this room in described 9th preset value and this indoor set Difference between the current indoor ambient temperature of interior machine is less than described tenth preset value, and described control module then judges this indoor set Interior machine choke valve break down and the corresponding electromagnetic valve that heats of this indoor set does not break down.
According to one embodiment of present invention, described control module is judging the interior machine choke valve of described i-th indoor set Or corresponding heat after electromagnetic valve breaks down, also control remaining indoor set described to be turned off, and judge described i-th Room In interior machine, whether the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set is less than the tenth Difference between the inlet temperature of indoor heat exchanger and the current indoor ambient temperature of this indoor set in one preset value and this indoor set Whether value is less than the high-pressure corresponding saturation temperature rise of described part flow arrangement in the 12nd preset value and Preset Time Whether it is more than the 13rd preset value, wherein, if the outlet temperature of indoor heat exchanger and this indoor set is current in this indoor set Difference between indoor environment temperature be less than in described 11st preset value and this indoor set the inlet temperature of indoor heat exchanger with Difference between the current indoor ambient temperature of this indoor set is less than described in described 12nd preset value and described Preset Time The high-pressure corresponding saturation temperature rise of part flow arrangement is more than described 13rd preset value, and described control module then judges This indoor set is corresponding to heat that electromagnetic valve breaks down and the interior machine choke valve of this indoor set does not break down.
Brief description
Fig. 1 is the coolant stream when multiple on-line system is in refrigeration standard-sized sheet running status according to an embodiment of the invention Xiang Tu；
Fig. 2 is the coolant stream being in when multiple on-line system when heating standard-sized sheet running status according to an embodiment of the invention Xiang Tu；
Fig. 3 is the linkage of the electromagnetic valve of interior machine choke valve and part flow arrangement in multiple on-line system according to embodiments of the present invention The flow chart of fault detection method；
Fig. 4 is the linkage event when multiple on-line system is in refrigeration standard-sized sheet running status according to an embodiment of the invention The flow chart of barrier detection method；And
Fig. 5 is the linkage event being in when multiple on-line system when heating standard-sized sheet running status according to an embodiment of the invention The flow chart of barrier detection method.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Interior machine choke valve and shunting in the multiple on-line system of proposition according to embodiments of the present invention to be described with reference to the accompanying drawings The linkage fault detection method of the electromagnetic valve of device and multiple on-line system.
In an embodiment of the present invention, multiple on-line system includes off-premises station, n indoor set and part flow arrangement, n indoor set In each indoor set all include indoor heat exchanger and interior machine choke valve, part flow arrangement includes the n that be connected corresponding with n indoor set Individual refrigeration electromagnetic valve and n heat electromagnetic valve, and wherein, n is positive integer.
Specifically, to be illustrated with four indoor sets here.As depicted in figs. 1 and 2, multiple on-line system may include outdoor Machine, first to fourth indoor set and part flow arrangement.Wherein, off-premises station may include compressor and fluid reservoir, first to fourth Room In interior machine, each indoor set may each comprise indoor heat exchanger and interior machine choke valve.
Part flow arrangement may include gas-liquid separator, First Heat Exchanger, first throttle element, the second heat exchanger, the second throttling Element, the electromagnetic valve that freezes, heat electromagnetic valve, freeze check valve and heat check valve.Wherein, the entrance of gas-liquid separator and room One end of outer machine is connected, and the liquid outlet of gas-liquid separator is connected with the entrance of the first heat exchange stream of First Heat Exchanger.The One end of one restricting element is connected with the outlet of the first heat exchange stream of First Heat Exchanger, the other end of first throttle element with The entrance of the first heat exchange stream of the second heat exchanger, the one end heating check valve are connected.One end of second restricting element and the The outlet of the first heat exchange stream of two heat exchangers, one end of refrigeration check valve are connected, the second heat exchange stream of the second heat exchanger Entrance be connected with the other end of the second restricting element, the outlet of the second heat exchange stream of the second heat exchanger and First Heat Exchanger The entrance of the second heat exchange stream be connected.The outlet of the second heat exchange stream of First Heat Exchanger and refrigeration electromagnetic valve, off-premises station The other end be connected, refrigeration check valve, the other end heating check valve are connected with corresponding four indoor sets, gas-liquid separation The gas outlet of device is connected with the one end heating electromagnetic valve, refrigeration electromagnetic valve, the other end heating electromagnetic valve and corresponding room Interior machine is connected.Wherein, first throttle element and the second restricting element can be electric expansion valve.
As shown in figure 1, when multiple on-line system is in refrigeration standard-sized sheet running status, being delivered to part flow arrangement from off-premises station Supercool coolant, through refrigeration indoor set interior machine choke valve, have refrigeration can need indoor heat absorption after, by the refrigeration opened Electromagnetic valve, converges in the low-voltage tube of part flow arrangement, eventually passes back to off-premises station.
As shown in Fig. 2 when multiple on-line system is in and heats standard-sized sheet running status, being delivered to part flow arrangement from off-premises station Overheated coolant, heats electromagnetic valve through open, and after having and heating the indoor heat release that can need, process heats the interior machine section of indoor set Stream valve and the corresponding check valve that heats flow to the second restricting element, after the second restricting element throttling expansion, from the second throttling unit The branch road that part is located returns off-premises station.
Multiple on-line system running is blocked in indoor set and the valve body of part flow arrangement it is possible to welding slag, Lead to valve body occur abnormal it is also possible to lead to valve body fault the problems such as because of valve body ageing failure and cannot reliably working, thus Lead to corresponding indoor set cannot normal work, but, the indoor set of other no exceptions still can normally run, because This, based on this feature, the present invention proposes a kind of linkage of the electromagnetic valve of interior machine choke valve and part flow arrangement in multiple on-line system Fault detection method, in system operation, still can rapidly and effectively judge the valve of indoor set and part flow arrangement Whether body breaks down.
Fig. 3 is the linkage of the electromagnetic valve of interior machine choke valve and part flow arrangement in multiple on-line system according to embodiments of the present invention The flow chart of fault detection method.As shown in figure 3, in this multiple on-line system the electromagnetic valve of interior machine choke valve and part flow arrangement connection Dynamic fault detection method, comprises the following steps:
S1, judges whether multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet running status.
S2, if multiple on-line system is in refrigeration standard-sized sheet running status, according to the current indoor environment of each indoor set Temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior machine choke valve of each indoor set and every Whether individual indoor set corresponding refrigeration electromagnetic valve breaks down.
According to one embodiment of present invention, according to the current indoor ambient temperature of each indoor set, each indoor set The inlet temperature of indoor heat exchanger and outlet temperature judge interior machine choke valve and the corresponding system of each indoor set of each indoor set Whether cold electromagnetic valve breaks down, comprising: if the current indoor ambient temperature of i-th indoor set is changed with interior in this indoor set Difference between the inlet temperature of hot device is less than the first preset value and the current indoor ambient temperature of this indoor set and this indoor set Difference between the outlet temperature of middle indoor heat exchanger is less than the current of each indoor set in the first preset value and remaining indoor set Difference between indoor environment temperature and the inlet temperature of corresponding indoor heat exchanger is more than the second preset value, then judge i-th The interior machine choke valve of indoor set or corresponding refrigeration electromagnetic valve break down.Wherein, i=1,2,3 ..., n, first preset Value and the second preset value can be demarcated according to practical situation, and for example, the first preset value a1 can be 3 DEG C, the second preset value a2 Can be 6 DEG C.
Specifically, as shown in figure 1, when multiple on-line system be in refrigeration standard-sized sheet running status and system not owe coolant when, can With according to current indoor ambient temperature t1 of each indoor set, inlet temperature t2a of the indoor heat exchanger of each indoor set with go out Mouth temperature t2b judges whether the interior machine choke valve of each indoor set and each indoor set corresponding refrigeration electromagnetic valve break down. When i-th indoor set is detected, if the t1-t2a ＜ a1 of i-th indoor set and t1-t2b ＜ a1, the temperature-sensitive of t2a is described Bag is in normal operating conditions, if the t1-t2a ＞ a2 of remaining indoor set is now detected, illustrates in i-th indoor set Coolant flowing is not smooth, and remaining indoor set is normal, now may determine that the interior machine choke valve of possibly this indoor set breaks down, It is also likely to be that the refrigeration electromagnetic valve of part flow arrangement corresponding with this indoor set breaks down.
In order to determine whether the interior machine choke valve of i-th indoor set or the refrigeration electromagnetic valve of corresponding part flow arrangement Break down, in one embodiment of the invention, in the interior machine choke valve judging i-th indoor set or corresponding refrigeration electricity After magnet valve breaks down, also include: control remaining indoor set to be turned off, and judge indoor heat exchanger in i-th indoor set In outlet temperature and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is more than the 3rd preset value.If this room In the outlet temperature of indoor heat exchanger and this indoor set in interior machine, the difference between the inlet temperature of indoor heat exchanger is more than the 3rd Preset value, then judge that the interior machine choke valve of this indoor set breaks down and this indoor set corresponding refrigeration electromagnetic valve does not occur event Barrier.Wherein, the 3rd preset value can be demarcated according to practical situation, and for example, the 3rd preset value a3 can be 8 DEG C.
Further, break down it in the interior machine choke valve or corresponding refrigeration electromagnetic valve judging i-th indoor set Afterwards, also include: control remaining indoor set to be turned off, and judge the outlet temperature of indoor heat exchanger and this room in i-th indoor set In interior machine, whether the difference between the inlet temperature of indoor heat exchanger is less than the current indoor ring of the 4th preset value and this indoor set In border temperature and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judges to be somebody's turn to do In indoor set, whether the difference between the inlet temperature of indoor heat exchanger and the corresponding saturation temperature of the low pressure of part flow arrangement More than the 6th preset value.If the entrance of indoor heat exchanger in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set Difference between temperature is less than the 4th preset value and the current indoor ambient temperature of this indoor set and heat exchange indoor in this indoor set Difference between the inlet temperature of device is less than the inlet temperature of indoor heat exchanger and shunting in the 5th preset value, or this indoor set Difference between the corresponding saturation temperature of low pressure of device is more than the 6th preset value, then judge the corresponding refrigeration of this indoor set Electromagnetic valve breaks down and the interior machine choke valve of this indoor set 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 Can be 15 DEG C.
Specifically, after the interior machine choke valve or corresponding refrigeration electromagnetic valve that judge i-th indoor set break down, First remaining indoor set being capable of normal work in addition to i-th indoor set in closing system, so that coolant is all indoor from i-th Machine flows through it is ensured that the coolant quantity of this indoor set is sufficient, will not lead to judge by accident because of bias current or scarce coolant.
When the t2b-t2a ＞ a3 of i-th indoor set is detected, according to pi (proportional integral, ratio Integration) control logic, need to control the interior machine choke valve one of this indoor set to head straight for greatly, but if this state does not change, then In explanation, machine choke valve is actual just normally opened big, then report the interior machine choke valve fault of indoor set it is impossible to normally open, and shunt Refrigeration electromagnetic valve in device is normal；As t2b-t2a ＜ a4 and t1-t2a ＜ a5 that i-th indoor set is detected, or detection To i-th indoor set t2a-tps3 (the corresponding saturation temperature of low pressure of part flow arrangement) ＞ a6 when, the interior machine of indoor set Choke valve will can gradually close minimum aperture needed for refrigeration according to pi control, but if interior pusher side is freezed, electromagnetic valve is blocked, no Method circulates, then can be completely in system high pressure area, now reports the refrigeration solenoid valve failure of part flow arrangement it is impossible to normally open, and The interior machine choke valve of indoor set is normal.
Further, as shown in figure 4, when multiple on-line system be in refrigeration full-gear when, its link fault detection method Can comprise the following steps that
S101, multiple on-line system be in refrigeration standard-sized sheet running status when, detect i-th indoor set t1-t2a ＜ a1 and T1-t2b ＜ a1, the t1-t2a ＞ a2 of remaining indoor set.
S102, the interior machine choke valve of i-th indoor set or corresponding refrigeration electromagnetic valve break down.
S103, closes remaining indoor set, so that coolant all flows through from i-th indoor set.
S104, detects t2b-t2a ＞ a3.
S105, by pi control logic, needs to control the interior machine choke valve one of this indoor set to head straight for greatly, but reality is not normal Open big.
S106, the interior machine choke valve fault of report indoor set, corresponding refrigeration electromagnetic valve is normal.
S107, detects t2b-t2a ＜ a4 and t1-t2a ＜ a5, or t2a-tps3 ＞ a6.
S108, according to pi control, interior machine choke valve is gradually closed minimum aperture, electromagnetic valve blocks up if interior pusher side is freezed Live it is impossible to circulation, then can be completely in system high pressure area.
S109, the interior machine choke valve of report indoor set is normal, corresponding refrigeration solenoid valve failure.
Therefore, linkage fault detection method according to embodiments of the present invention, can be first according to decision condition positioning refrigeration event Whether barrier pipeline breaks down, and then breaks down further according to decision condition positioning specifically which valve body, thus in system fortune During row, rapidly and effectively judge whether the cold electromagnetic valve of heat of part flow arrangement and the interior machine choke valve of indoor set occur event Barrier, thus ensure system safe and reliable operation.
S3, if multiple on-line system is in heats standard-sized sheet running status, according to the current indoor environment of each indoor set Temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior machine choke valve of each indoor set and every Individual indoor set is corresponding to heat whether electromagnetic valve breaks down.
According to one embodiment of present invention, according to the current indoor ambient temperature of each indoor set, each indoor set The inlet temperature of indoor heat exchanger and outlet temperature judge interior machine choke valve and the corresponding system of each indoor set of each indoor set Whether thermoelectrical magnetic valve breaks down, comprising: if the outlet temperature of indoor heat exchanger and this indoor set works as in i-th indoor set Difference between front indoor environment temperature is less than the inlet temperature of indoor heat exchanger and this room in the 7th preset value and this indoor set Difference between the current indoor ambient temperature of interior machine is less than the interior of each indoor set in the 7th preset value and remaining indoor set Difference between the outlet temperature of heat exchanger and corresponding current indoor ambient temperature is more than the 8th preset value, then judge i-th The interior machine choke valve of indoor set or the corresponding electromagnetic valve that heats break down.Wherein, the 7th preset value and the 8th preset value can Demarcated according to practical situation, for example, the 7th preset 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 multiple on-line system is in and heats standard-sized sheet running status and system and do not owe coolant, can With according to current indoor ambient temperature t1 of each indoor set, inlet temperature t2a of the indoor heat exchanger of each indoor set with go out Mouth temperature t2b judges whether the interior machine choke valve of each indoor set and each indoor set corresponding refrigeration electromagnetic valve break down. As t2b-t1 ＜ a7 and t2a-t1 ＜ a7 that i-th indoor set is detected, and the t2b-t1 ＞ a8 of remaining indoor set, then explanation the Coolant flowing in i indoor set is not smooth, and remaining indoor set is normal, now may determine that the interior machine throttling of possibly this indoor set Valve breaks down it is also possible to the electromagnetic valve that heats of part flow arrangement corresponding with this indoor set breaks down.
Heat electromagnetic valve in order to determine whether the interior machine choke valve of i-th indoor set or corresponding part flow arrangement Break down, in one embodiment of the invention, in the interior machine choke valve judging i-th indoor set or corresponding heat electricity After magnet valve breaks down, also include: control remaining indoor set to be turned off, and judge indoor heat exchanger in i-th indoor set Whether the difference between the current indoor ambient temperature of outlet temperature and this indoor set is more than in the 9th preset value and this indoor set Whether the difference between the current indoor ambient temperature of the inlet temperature of indoor heat exchanger and this indoor set is less than the tenth preset value. If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set is more than in this indoor set In 9th preset value and this indoor set between the inlet temperature of indoor heat exchanger and the current indoor ambient temperature of this indoor set Difference is less than the tenth preset value, then judge that the interior machine choke valve of this indoor set breaks down and this indoor set is corresponding and heat electricity Magnet valve does not break down.Wherein, the 9th preset value and the tenth preset value can be demarcated according to practical situation, and 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, break down it in the interior machine choke valve or the corresponding electromagnetic valve that heats judging i-th indoor set Afterwards, also include: control remaining indoor set to be turned off, and judge the outlet temperature of indoor heat exchanger and this room in i-th indoor set Whether the difference between the current indoor ambient temperature of interior machine is less than indoor heat exchanger in the 11st preset value and this indoor set Whether the difference between the current indoor ambient temperature of inlet temperature and this indoor set is less than the 12nd preset value and Preset Time Whether the high-pressure corresponding saturation temperature rise of interior part flow arrangement is more than the 13rd preset value.If room in this indoor set Difference between the current indoor ambient temperature of the outlet temperature of interior heat exchanger and this indoor set is less than the 11st preset value and is somebody's turn to do In indoor set, the difference between the current indoor ambient temperature of the inlet temperature of indoor heat exchanger and this indoor set is less than the 12nd In preset value and Preset Time, the high-pressure of part flow arrangement corresponding saturation temperature rise is more than the 13rd preset value, then Judge that this indoor set is corresponding and heat that electromagnetic valve breaks down and the interior machine choke valve of this indoor set does not break down.Wherein, 11 to the 13rd preset values, Preset Time can be demarcated according to practical situation, and 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, the interior machine choke valve judging i-th indoor set or corresponding heat after electromagnetic valve breaks down, The first other indoor sets being capable of normal work in addition to i-th indoor set in closing system, so that coolant is all indoor from i-th Machine flows through it is ensured that the coolant quantity of this indoor set is sufficient, will not lead to judge by accident because of bias current or scarce coolant.
When the t2b-t1 ＞ a9 and t2a-t1 ＜ a10 of i-th indoor set is detected, judge that the import heating indoor set is led to Freely, but the flow that heats indoor set is too little, the degree of supercooling heating indoor set is very big, according to pi control, needs to control this indoor set Interior machine choke valve do not turn off greatly, but reality is not opened greatly, and system is blocked, the interior machine choke valve fault of this Times indoor set, Can not normally open, and in part flow arrangement to heat electromagnetic valve normal；As the t2b-t1 ＜ a11 i-th indoor set is detected and In t2a-t1 ＜ a12 and 1min, the rise ＞ a13 of corresponding saturation temperature tps1 of high-pressure of part flow arrangement, then heat The import of indoor set is not smooth, and system is heated electromagnetic valve and blocks, now report part flow arrangement heat solenoid valve failure it is impossible to normal Open, and the interior machine choke valve of indoor set is normal.
Further, as shown in figure 5, when multiple on-line system is in and heats full-gear, its fault detection method that links Can comprise the following steps that
S201, multiple on-line system is in when heating standard-sized sheet running status, detect i-th indoor set t2b-t1 ＜ a7 and T2a-t1 ＜ a7, and the t2b-t1 ＞ a8 of remaining indoor set.
S202, the interior machine choke valve of i-th indoor set or the corresponding electromagnetic valve that heats break down.
S203, closes other indoor sets, so that coolant all flows through from i-th indoor set.
S204, detects t2b-t1 ＞ a9 and t2a-t1 ＜ a10.
S205, according to pi control, needs to control the interior machine choke valve of this indoor set not turn off greatly, but reality is not opened greatly, System is blocked.
S206, the interior machine choke valve fault of report indoor set, it is corresponding that to heat electromagnetic valve normal.
S207, high-pressure part flow arrangement in t2b-t1 ＜ a11 and t2a-t1 ＜ a12 and 1min is detected is corresponding full Rise ＞ a13 with temperature tps1.
S208, the import heating indoor set is not smooth, and system is heated electromagnetic valve and blocks.
S209, the interior machine choke valve of report indoor set is normal, corresponding heats solenoid valve failure.
Therefore, linkage fault detection method according to embodiments of the present invention, first can heat event according to decision condition positioning Whether barrier pipeline breaks down, and then breaks down further according to decision condition positioning specifically which valve body, thus in system fortune During row, rapidly and effectively judge the interior machine choke valve heating electromagnetic valve and indoor set of part flow arrangement whether occur therefore Barrier, thus ensure system safe and reliable operation.
In sum, interior machine choke valve and the electromagnetic valve of part flow arrangement in multiple on-line system according to embodiments of the present invention Linkage fault detection method, first determines whether whether multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet operation shape State, if multiple on-line system is in refrigeration standard-sized sheet running status, according to the current indoor ambient temperature of each indoor set, each The inlet temperature of the indoor heat exchanger of indoor set and outlet temperature judge interior machine choke valve and each indoor set of each indoor set Whether corresponding refrigeration electromagnetic valve breaks down；If multiple on-line system is in heats standard-sized sheet running status, according to each room The current indoor ambient temperature of interior machine, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge that each is indoor With each indoor set is corresponding, the interior machine choke valve of machine heats whether electromagnetic valve breaks down.The method can be in multiple on-line system In running, rapidly and effectively judge whether the electromagnetic valve in part flow arrangement and the choke valve of indoor set break down, Thus ensureing the safe and reliable operation of system.
To describe the multiple on-line system of the embodiment of the present invention below in conjunction with the accompanying drawings in detail.
As depicted in figs. 1 and 2, the multiple on-line system of the embodiment of the present invention include off-premises station 100, n indoor set 200, point Stream device 300 and control module (in figure is not specifically illustrated).
Wherein, each indoor set in n indoor set 200 all includes indoor heat exchanger and interior machine choke valve, part flow arrangement 300 include n refrigeration electromagnetic valve being connected corresponding with n indoor set 200 and n heat electromagnetic valve, n is positive integer.
Specifically, n indoor set includes the first indoor set to the n-th indoor set, indoor set can with unnecessary four fewer than Four, specifically the number of required indoor set need to be determined according to practical situation, and, the number of indoor set is to part flow arrangement In 300 freeze electromagnetic valve number, heat electromagnetic valve number, refrigeration check valve number and heat number of check valve etc. tool There is decisive role.
Here to be illustrated with four indoor sets 210,220,230 and 240.Specifically, as depicted in figs. 1 and 2, many On-line system may include machine in off-premises station 100, the first indoor set 210, the second indoor set 220, the 3rd indoor set 230 and fourth ventricle 240 and part flow arrangement 300.Wherein, off-premises station 100 may include compressor 101 and fluid reservoir 102.First indoor set 210 includes Indoor heat exchanger 211 and interior machine choke valve 212, the second indoor set 220 includes indoor heat exchanger 221 and interior machine choke valve 222, the The inclusion indoor heat exchanger 231 of three indoor sets 230 and interior machine choke valve 232, the inclusion indoor heat exchanger of machine 240 in fourth ventricle 241 and interior machine choke valve 242.
Part flow arrangement 300 may include gas-liquid separator 301, First Heat Exchanger 302, first throttle element 304, the second heat exchange Device 303, the second restricting element 305, refrigeration electromagnetic valve 310,311,312 and 313, heat electromagnetic valve 306,307,308 and 309, Refrigeration check valve 318,319,320 and 321 and heat check valve 314,315,316 and 317.Wherein, gas-liquid separator 301 Entrance is connected with one end of off-premises station 100, the first heat exchange stream of the liquid outlet of gas-liquid separator 301 and First Heat Exchanger 302 The entrance on road is connected.One end of first throttle element 304 is connected with the outlet of the first heat exchange stream of First Heat Exchanger 302 Logical, the entrance of the first heat exchange stream of the other end of first throttle element 304 and the second heat exchanger 303, heat check valve 306, 307th, 308 are connected with 309 one end.One end of second restricting element 305 and the first heat exchange stream of 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 stream 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 stream of the second heat exchanger 303 and First Heat Exchanger The entrance of 302 the second heat exchange stream is connected.The outlet of the second heat exchange stream of First Heat Exchanger 302 and refrigeration electromagnetic valve 310th, 311,312 are connected with the other end of 313, off-premises station 100, refrigeration check valve 318,319,320 and 321, heat unidirectional Valve 306,307,308 is connected with corresponding four indoor sets 210,220,230 and 240 with 309 other end, gas-liquid separator 301 gas outlet is connected with the one end heating electromagnetic valve 306,307,308 and 309, and freeze electromagnetic valve 310,311,312 and 313rd, heat electromagnetic valve 306,307,308 to be connected with corresponding indoor set 210,220,230 and 240 with 309 other end.
Control module is used for judging whether multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet operation shape State.If multiple on-line system is in refrigeration standard-sized sheet running status, the control module then current indoor environment according to each indoor set Temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior machine choke valve of each indoor set and every Whether individual indoor set corresponding refrigeration electromagnetic valve breaks down；If multiple on-line system is in heats standard-sized sheet running status, control Module is then according to the current indoor ambient temperature of each indoor set, the inlet temperature of the indoor heat exchanger of each indoor set and outlet Temperature judges with each indoor set is corresponding, the interior machine choke valve of each indoor set heats whether electromagnetic valve breaks down.
According to one embodiment of present invention, control module according to the current indoor ambient temperature of each indoor set, each The inlet temperature of the indoor heat exchanger of indoor set and outlet temperature judge interior machine choke valve and each indoor set of each indoor set When whether corresponding refrigeration electromagnetic valve breaks down, wherein, if the current indoor ambient temperature of i-th indoor set and this interior In machine, the difference between the inlet temperature of indoor heat exchanger is less than the current indoor ambient temperature of the first preset value and this indoor set And the difference between the outlet temperature of indoor heat exchanger is less than each room in the first preset value and remaining indoor set in this indoor set Difference between the current indoor ambient temperature of interior machine and the inlet temperature of corresponding indoor heat exchanger is more than the second preset value, control Molding block then judges that interior machine choke valve in i-th indoor set or corresponding refrigeration electromagnetic valve break down, wherein, i=1, 2nd, 3 ..., n, wherein, the first preset value a1 can be 3 DEG C, and the second preset value a2 can be 6 DEG C.
Specifically, as shown in figure 1, when multiple on-line system be in refrigeration standard-sized sheet running status and system not owe coolant when, can With according to current indoor ambient temperature t1 of each indoor set, inlet temperature t2a of the indoor heat exchanger of each indoor set with go out Mouth temperature t2b judges whether the interior machine choke valve of each indoor set and each indoor set corresponding refrigeration electromagnetic valve break down. When i-th indoor set is detected, if the t1-t2a ＜ a1 of i-th indoor set and t1-t2b ＜ a1, the temperature-sensitive of t2a is described Bag is in normal operating conditions, if the t1-t2a ＞ a2 of remaining indoor set is now detected, illustrates in i-th indoor set Coolant flowing is not smooth, and remaining indoor set is normal, now may determine that the interior machine choke valve of possibly this indoor set breaks down, It is also likely to be that the refrigeration electromagnetic valve of part flow arrangement 300 corresponding with this indoor set breaks down.
In order to determine whether the interior machine choke valve of i-th indoor set or the refrigeration electromagnetic valve of corresponding part flow arrangement Break down, according to one embodiment of present invention, control module is in the interior machine choke valve judging i-th indoor set or correspondence Refrigeration electromagnetic valve break down after, also control remaining indoor set to be turned off, and judge indoor heat exchanger in i-th indoor set Outlet temperature and this indoor set in indoor heat exchanger inlet temperature between difference whether be more than the 3rd preset value, wherein, If the difference between the inlet temperature of indoor heat exchanger in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set More than the 3rd preset value, control module then judges that the interior machine choke valve of this indoor set breaks down and the corresponding system of this indoor set Cold electromagnetic valve does not break down.Wherein, the 3rd preset value a3 can be 8 DEG C.
Further, control module is sent out in the interior machine choke valve or corresponding refrigeration electromagnetic valve judging i-th indoor set After raw fault, also control remaining indoor set to be turned off, and judge in i-th indoor set the outlet temperature of indoor heat exchanger with should In indoor set, whether the difference between the inlet temperature of indoor heat exchanger is less than the current indoor of the 4th preset value and this indoor set In ambient temperature and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judges Whether the difference between temperature at the low pressure of the current indoor ambient temperature of this indoor set and part flow arrangement 300 is pre- more than the 6th If value, wherein, if in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set indoor heat exchanger inlet temperature Between difference be less than the 4th preset value and the current indoor ambient temperature of this indoor set and indoor heat exchanger in this indoor set Difference between inlet temperature is less than the 5th preset value, or the current indoor ambient temperature of this indoor set and part flow arrangement 300 Low pressure at temperature between difference be more than the 6th preset value, control module then judges this indoor set corresponding refrigeration electromagnetic valve Break down and the interior machine choke valve of this indoor set does not break down.Wherein, the 4th preset value a4 can for 3 DEG C, the 5th preset Value a5 can be 15 DEG C for 3 DEG C and the 6th preset value a6.
Specifically, after the interior machine choke valve or corresponding refrigeration electromagnetic valve that judge i-th indoor set break down, Control module first remaining indoor set being capable of normal work in addition to i-th indoor set in closing system so that coolant all from I-th indoor set flows through it is ensured that the coolant quantity of this indoor set is sufficient, will not lead to judge by accident because of bias current or scarce coolant.
When the t2b-t2a ＞ a3 of i-th indoor set is detected, according to pi (proportional integral, ratio Integration) control logic, need to control the interior machine choke valve one of this indoor set to head straight for greatly, but if this state does not change, then In explanation, machine choke valve is actual just not normally opened big, and control module then reports the interior machine choke valve fault of indoor set it is impossible to normally beat Open, and the refrigeration electromagnetic valve in part flow arrangement 300 is normal；As t2b-t2a ＜ a4 and t1-t2a ＜ that i-th indoor set is detected A5, or t2a-tps3 (the corresponding saturation temperature of low pressure of part flow arrangement 300) the ＞ a6 of i-th indoor set is detected When, the interior machine choke valve of indoor set will can gradually close minimum aperture needed for refrigeration according to pi control, but if interior pusher side is made Cold electromagnetic valve is blocked it is impossible to circulate, then can be completely in system high pressure area, now the refrigeration of control module report part flow arrangement 300 Solenoid valve failure is it is impossible to normally open, and the interior machine choke valve of indoor set is normal.
Therefore, according to decision condition, control module first can position whether refrigeration defective pipe break down, then root again Which break down according to decision condition positioning specifically valve body, thus in system operation, rapidly and effectively judging Whether the interior machine choke valve of the cold electromagnetic valve of heat of part flow arrangement and indoor set breaks down, thus ensureing the safe and reliable fortune of system OK.
According to one embodiment of present invention, control module according to the current indoor ambient temperature of each indoor set, each The inlet temperature of the indoor heat exchanger of indoor set and outlet temperature judge interior machine choke valve and each indoor set of each indoor set Corresponding when heating electromagnetic valve and whether breaking down, wherein, if in i-th indoor set the outlet temperature of indoor heat exchanger with should Difference between the current indoor ambient temperature of indoor set is less than the entrance of indoor heat exchanger in the 7th preset value and this indoor set Difference between the current indoor ambient temperature of temperature and this indoor set is less than each room in the 7th preset value and remaining indoor set Difference between the outlet temperature of the indoor heat exchanger of interior machine and corresponding current indoor ambient temperature is more than the 8th preset value, control Molding block then judges that the interior machine choke valve of i-th indoor set or the corresponding electromagnetic valve that heats break down.Wherein, the 7th preset 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 multiple on-line system is in and heats standard-sized sheet running status and system not deficient coolant, controlling Molding block can be according to the entrance temperature of current indoor ambient temperature t1 of each indoor set, the indoor heat exchanger of each indoor set Whether degree t2a and outlet temperature t2b judge the interior machine choke valve of each indoor set and each indoor set corresponding refrigeration electromagnetic valve Break down.As t2b-t1 ＜ a7 and t2a-t1 ＜ a7 that i-th indoor set is detected, and the t2b-t1 ＞ of remaining indoor set A8, then illustrate that the coolant flowing in i-th indoor set is not smooth, remaining indoor set is normal, now may determine that possibly this interior The interior machine choke valve of machine breaks down it is also possible to the electromagnetic valve that heats of part flow arrangement 300 corresponding with this indoor set occurs event Barrier.
Heat electromagnetic valve in order to determine whether the interior machine choke valve of i-th indoor set or corresponding part flow arrangement Break down, according to one embodiment of present invention, control module is in the interior machine choke valve judging i-th indoor set or correspondence Heat after electromagnetic valve breaks down, also control remaining indoor set to be turned off, and judge indoor heat exchanger in i-th indoor set Outlet temperature and the current indoor ambient temperature of this indoor set between difference whether be more than the 9th preset value and this indoor set Whether the difference between the current indoor ambient temperature of the inlet temperature of middle indoor heat exchanger and this indoor set is preset less than the tenth Value, wherein, if in this indoor set between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set Difference is more than the current indoor environment temperature of the inlet temperature of indoor heat exchanger and this indoor set in the 9th preset value and this indoor set Difference between degree is less than the tenth preset value, and control module then judges that the interior machine choke valve of this indoor set breaks down and this room The corresponding electromagnetic valve that heats of interior machine does not break down.Wherein, the 9th preset value a9 can be 12 DEG C, and the tenth preset value a10 is permissible For 3 DEG C.
Further, control module is sent out in the interior machine choke valve or the corresponding electromagnetic valve that heats judging i-th indoor set After raw fault, also control remaining indoor set to be turned off, and judge in i-th indoor set the outlet temperature of indoor heat exchanger with should Whether the difference between the current indoor ambient temperature of indoor set is less than indoor heat exchanger in the 11st preset value and this indoor set Inlet temperature and the current indoor ambient temperature of this indoor set between difference whether less than the 12nd preset value and default when Whether the temperature increase amount at the high pressure of interior part flow arrangement 300 is more than the 13rd preset value, wherein, if room in this indoor set Difference between the current indoor ambient temperature of the outlet temperature of interior heat exchanger and this indoor set is less than the 11st preset value and is somebody's turn to do In indoor set, the difference between the current indoor ambient temperature of the inlet temperature of indoor heat exchanger and this indoor set is less than the 12nd Temperature increase amount at the high pressure of part flow arrangement 300 in preset value and Preset Time is more than the 13rd preset value, and control module is then Judge that this indoor set is corresponding and heat that electromagnetic valve breaks down and the interior machine choke valve of this indoor set does not break down.Wherein, 11 preset value a11 can for 3 DEG C, the 12nd preset value a12 can for 3 DEG C and the 13rd preset value a13 can be 10 DEG C, in advance If the time can be 1min.
Specifically, the interior machine choke valve judging i-th indoor set or corresponding heat after electromagnetic valve breaks down, The control module first other indoor sets being capable of normal work in addition to i-th indoor set in closing system so that coolant all from I-th indoor set flows through it is ensured that the coolant quantity of this indoor set is sufficient, will not lead to judge by accident because of bias current or scarce coolant.
When the t2b-t1 ＞ a9 and t2a-t1 ＜ a10 of i-th indoor set is detected, judge that the import heating indoor set is led to Freely, but the flow that heats indoor set is too little, the degree of supercooling heating indoor set is very big, according to pi control, needs to control this indoor set Interior machine choke valve do not turn off greatly, but reality is not opened greatly, and system is blocked, now the interior machine throttling of control module report indoor set Valve fault it is impossible to normally open, and in part flow arrangement 300 to heat electromagnetic valve normal；As the t2b- i-th indoor set is detected The rise of 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 heating indoor set is not smooth, and system is heated electromagnetic valve and blocks, now control module report part flow arrangement 300 Heat solenoid valve failure it is impossible to normally open, and the interior machine choke valve of indoor set is normal.
Therefore, according to decision condition positioning, control module first can heat whether defective pipe breaks down, then root again Which break down according to decision condition positioning specifically valve body, thus in system operation, rapidly and effectively judging Part flow arrangement heat electromagnetic valve and whether the interior machine choke valve of indoor set breaks down, thus ensureing the safe and reliable fortune of system OK.
Multiple on-line system according to embodiments of the present invention, it is complete that control module first determines whether whether multiple on-line system is in refrigeration Open shop state or heat standard-sized sheet running status, if multiple on-line system is in refrigeration standard-sized sheet running status, control module is then Sentenced according to the current indoor ambient temperature of each indoor set, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature Whether the interior machine choke valve of each indoor set disconnected and each indoor set corresponding refrigeration electromagnetic valve break down；If multi-connected machine system System is in and heats standard-sized sheet running status, control module then current indoor ambient temperature, each indoor set according to each indoor set The inlet temperature of indoor heat exchanger and outlet temperature judge the interior machine choke valve of each indoor set and each indoor set corresponding Heat whether electromagnetic valve breaks down.This system, in multiple on-line system running, can quickly and efficiently detect shunting Whether the choke valve of the electromagnetic valve in device and indoor set breaks down, thus ensureing the safe and reliable operation of multiple on-line system.
In describing the invention it is to be understood that term " first ", " second " are only used for describing purpose, and can not It is interpreted as indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the One ", the feature of " second " can be expressed or implicitly include at least one this feature.In describing the invention, " multiple " It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (14)

1. in a kind of multiple on-line system the electromagnetic valve of interior machine choke valve and part flow arrangement linkage fault detection method, its feature exists In described multiple on-line system includes off-premises station, n indoor set and part flow arrangement, and each indoor set in described n indoor set is equal Including indoor heat exchanger and interior machine choke valve, described part flow arrangement includes n refrigeration electricity being connected corresponding with described n indoor set Magnet valve and n heats electromagnetic valve, and wherein, n is positive integer, the method comprising the steps of:
Judge whether described multiple on-line system is in refrigeration standard-sized sheet running status or heats standard-sized sheet running status；
If described multiple on-line system is in described refrigeration standard-sized sheet running status, according to the current indoor of each indoor set described Ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior machine section of each indoor set described Whether stream valve and each indoor set described corresponding refrigeration electromagnetic valve break down；And
If described multiple on-line system heats standard-sized sheet running status described in being in, according to the current indoor of each indoor set described Ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge the interior machine section of each indoor set described With each indoor set is corresponding, stream valve heats whether electromagnetic valve breaks down.
2. the method for claim 1 is it is characterised in that the current indoor environment temperature of each indoor set described in described basis Degree, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described interior machine choke valve and Whether each indoor set described corresponding refrigeration electromagnetic valve breaks down, comprising:
If the difference between the inlet temperature of indoor heat exchanger in the current indoor ambient temperature of i-th indoor set and this indoor set Value is less than the outlet temperature of indoor heat exchanger in the first preset value and the current indoor ambient temperature of this indoor set and this indoor set Between difference be less than in described first preset value and remaining indoor set the current indoor ambient temperature of each indoor set with corresponding The inlet temperature of indoor heat exchanger between difference be more than the second preset value, then judge the interior machine section of described i-th indoor set Stream valve or corresponding refrigeration electromagnetic valve break down, wherein, i=1,2,3 ..., n.
3. method as claimed in claim 2 it is characterised in that in the interior machine choke valve judging described i-th indoor set or After corresponding refrigeration electromagnetic valve breaks down, also include:
Control remaining indoor set described to be turned off, and judge in described i-th indoor set the outlet temperature of indoor heat exchanger with should In indoor set, whether the difference between the inlet temperature of indoor heat exchanger is more than the 3rd preset value；
If in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set between the inlet temperature of indoor heat exchanger Difference is more than described 3rd preset value, then judge that the interior machine choke valve of this indoor set breaks down and the corresponding system of this indoor set Cold electromagnetic valve does not break down.
4. method as claimed in claim 2 or claim 3 it is characterised in that in the interior machine choke valve judging described i-th indoor set or After person's corresponding refrigeration electromagnetic valve breaks down, also include:
Control remaining indoor set described to be turned off, and judge in described i-th indoor set the outlet temperature of indoor heat exchanger with should In indoor set, whether the difference between the inlet temperature of indoor heat exchanger is less than the current indoor of the 4th preset value and this indoor set In ambient temperature and this indoor set, whether the difference between the inlet temperature of indoor heat exchanger is less than the 5th preset value, or judges Difference between the inlet temperature of indoor heat exchanger saturation temperature corresponding with the low pressure of described part flow arrangement in this indoor set Whether value is more than the 6th preset value；
If in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set between the inlet temperature of indoor heat exchanger Difference is less than described 4th preset value and the current indoor ambient temperature of this indoor set and the entering of indoor heat exchanger in this indoor set Difference between mouthful temperature is less than described 5th preset value, or in this indoor set the inlet temperature of indoor heat exchanger with described point Difference between the corresponding saturation temperature of low pressure of stream device is more than described 6th preset value, then judge that this indoor set corresponds to Refrigeration electromagnetic valve break down and the interior machine choke valve of this indoor set does not break down.
5. the method for claim 1 is it is characterised in that the current indoor environment temperature of each indoor set described in described basis Degree, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described interior machine choke valve and Each indoor set is corresponding to heat whether electromagnetic valve breaks down, comprising:
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in i-th indoor set Value is less than the inlet temperature of indoor heat exchanger in the 7th preset value and this indoor set and the current indoor ambient temperature of this indoor set Between difference be less than in described 7th preset value and remaining indoor set the outlet temperature of indoor heat exchanger of each indoor set with Difference between corresponding current indoor ambient temperature is more than the 8th preset value, then judge the interior machine section of described i-th indoor set Stream valve or the corresponding electromagnetic valve that heats break down, wherein, i=1,2,3 ..., n.
6. method as claimed in claim 5 it is characterised in that in the interior machine choke valve judging described i-th indoor set or Corresponding heat after electromagnetic valve breaks down, also include:
Control remaining indoor set described to be turned off, and judge in described i-th indoor set the outlet temperature of indoor heat exchanger with should Whether the difference between the current indoor ambient temperature of indoor set is more than indoor heat exchanger in the 9th preset value and this indoor set Whether the difference between the current indoor ambient temperature of inlet temperature and this indoor set is less than the tenth preset value；
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in this indoor set The current indoor environment temperature of the inlet temperature of indoor heat exchanger and this indoor set more than described 9th preset value and in this indoor set Difference between degree is less than described tenth preset value, then judge that the interior machine choke valve of this indoor set breaks down and this indoor set The corresponding electromagnetic valve that heats does not break down.
7. the method as described in claim 5 or 6 it is characterised in that judge as described in i-th indoor set interior machine choke valve or Person is corresponding to be heated after electromagnetic valve breaks down, and also includes:
Control remaining indoor set described to be turned off, and judge in described i-th indoor set the outlet temperature of indoor heat exchanger with should Whether the difference between the current indoor ambient temperature of indoor set is less than indoor heat exchanger in the 11st preset value and this indoor set Inlet temperature and the current indoor ambient temperature of this indoor set between difference whether less than the 12nd preset value and default when Whether the high-pressure corresponding saturation temperature rise of interior described part flow arrangement is more than the 13rd preset value；
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in this indoor set The current indoor environment of the inlet temperature of indoor heat exchanger and this indoor set less than described 11st preset value and in this indoor set The high-pressure that difference between temperature is less than described part flow arrangement in described 12nd preset value and described Preset Time corresponds to Saturation temperature rise be more than described 13rd preset value, then judge this indoor set corresponding heat electromagnetic valve break down, And the interior machine choke valve of this indoor set does not break down.
8. a kind of multiple on-line system is it is characterised in that include:
Off-premises station；
N indoor set, each indoor set in described n indoor set all includes indoor heat exchanger and interior machine choke valve, wherein, n For positive integer；
Part flow arrangement, described part flow arrangement includes n refrigeration electromagnetic valve being connected corresponding with described n indoor set and n is individual heats Electromagnetic valve；
Control module, described control module is used for judging whether described multiple on-line system is in refrigeration standard-sized sheet running status or system Hot standard-sized sheet running status, wherein, if described multiple on-line system is in described refrigeration standard-sized sheet running status, described control module is then According to the current indoor ambient temperature of each indoor set described, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature Degree judges whether the interior machine choke valve of each indoor set described and each indoor set described corresponding refrigeration electromagnetic valve break down； If described multiple on-line system heats standard-sized sheet running status described in being in, described control module is then according to each indoor set described Current indoor ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described Interior machine choke valve and each indoor set is corresponding heats whether electromagnetic valve breaks down.
9. multiple on-line system as claimed in claim 8 is it is characterised in that described control module is according to each indoor set described Current indoor ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge each indoor set described Interior machine choke valve and each indoor set described corresponding refrigeration electromagnetic valve when whether breaking down, wherein,
If the difference between the inlet temperature of indoor heat exchanger in the current indoor ambient temperature of i-th indoor set and this indoor set Value is less than the outlet temperature of indoor heat exchanger in the first preset value and the current indoor ambient temperature of this indoor set and this indoor set Between difference be less than in described first preset value and remaining indoor set the current indoor ambient temperature of each indoor set with corresponding The inlet temperature of indoor heat exchanger between difference be more than the second preset value, described control module then judges described i-th Room Interior machine choke valve in interior machine or corresponding refrigeration electromagnetic valve break down, wherein, i=1,2,3 ..., n.
10. multiple on-line system as claimed in claim 9 is it is characterised in that described control module is judging described i-th interior After the interior machine choke valve of machine or corresponding refrigeration electromagnetic valve break down, remaining indoor set described is also controlled to be turned off, and Judge in the outlet temperature of indoor heat exchanger and this indoor set in described i-th indoor set between the inlet temperature of indoor heat exchanger Difference whether be more than the 3rd preset value, wherein,
If in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set between the inlet temperature of indoor heat exchanger Difference is more than described 3rd preset value, and described control module then judges that the interior machine choke valve of this indoor set breaks down and this room Interior machine corresponding refrigeration electromagnetic valve does not break down.
11. multiple on-line system as described in claim 9 or 10 are it is characterised in that described control module is i-th as described in judgement After the interior machine choke valve of indoor set or corresponding refrigeration electromagnetic valve break down, remaining indoor set described is also controlled all to close Close, and judge the entrance temperature of indoor heat exchanger in the outlet temperature of indoor heat exchanger and this indoor set in described i-th indoor set Difference between degree whether is less than the 4th preset value and the current indoor ambient temperature of this indoor set is changed with interior in this indoor set Whether the difference between the inlet temperature of hot device is less than the 5th preset value, or the current indoor ambient temperature judging this indoor set Whether the difference between saturation temperature corresponding with the low pressure of described part flow arrangement is more than the 6th preset value, wherein,
If in the outlet temperature of indoor heat exchanger and this indoor set in this indoor set between the inlet temperature of indoor heat exchanger Difference is less than described 4th preset value and the current indoor ambient temperature of this indoor set and the entering of indoor heat exchanger in this indoor set Difference between mouth temperature is less than described 5th preset value, or the current indoor ambient temperature of this indoor set and described shunting dress Difference between the corresponding saturation temperature of low pressure put is more than described 6th preset value, and described control module then judges this room Interior machine corresponding refrigeration electromagnetic valve breaks down and the interior machine choke valve of this indoor set does not break down.
12. multiple on-line system as claimed in claim 8 are it is characterised in that described control module is according to each indoor set described Current indoor ambient temperature, the inlet temperature of the indoor heat exchanger of each indoor set and outlet temperature judge that described each is indoor The interior machine choke valve of machine and whether each indoor set is corresponding when heating electromagnetic valve and breaking down, wherein,
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in i-th indoor set Value is less than the inlet temperature of indoor heat exchanger in the 7th preset value and this indoor set and the current indoor ambient temperature of this indoor set Between difference be less than in described 7th preset value and remaining indoor set the outlet temperature of indoor heat exchanger of each indoor set with Difference between corresponding current indoor ambient temperature is more than the 8th preset value, and described control module then judges described i-th Room The interior machine choke valve of interior machine or the corresponding electromagnetic valve that heats break down, wherein, i=1,2,3 ..., n.
13. multiple on-line system as claimed in claim 12 are it is characterised in that described control module is judging described i-th Room The interior machine choke valve of interior machine or corresponding heat after electromagnetic valve breaks down, also control remaining indoor set described to be turned off, And judge in described i-th indoor set between the outlet temperature of indoor heat exchanger and the current indoor ambient temperature of this indoor set Whether difference is more than the inlet temperature of indoor heat exchanger in the 9th preset value and this indoor set and the current indoor ring of this indoor set Whether the difference between the temperature of border is less than the tenth preset value, wherein,
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in this indoor set The current indoor environment temperature of the inlet temperature of indoor heat exchanger and this indoor set more than described 9th preset value and in this indoor set Difference between degree is less than described tenth preset value, and described control module then judges that the interior machine choke valve of this indoor set occurs event Hinder and the corresponding electromagnetic valve that heats of this indoor set does not break down.
14. multiple on-line system as described in claim 12 or 13 are it is characterised in that described control module is i-th as described in judgement The interior machine choke valve of individual indoor set or corresponding heat after electromagnetic valve breaks down, also control remaining indoor set described all to close Close, and judge the outlet temperature of indoor heat exchanger and this indoor set in described i-th indoor set current indoor ambient temperature it Between difference whether less than indoor heat exchanger in the 11st preset value and this indoor set inlet temperature and this indoor set current Whether the difference between indoor environment temperature is less than the high-pressure of described part flow arrangement in the 12nd preset value and Preset Time Whether corresponding saturation temperature rise is more than the 13rd preset value, wherein,
If the difference between the current indoor ambient temperature of the outlet temperature of indoor heat exchanger and this indoor set in this indoor set The current indoor environment of the inlet temperature of indoor heat exchanger and this indoor set less than described 11st preset value and in this indoor set The high-pressure that difference between temperature is less than described part flow arrangement in described 12nd preset value and described Preset Time corresponds to Saturation temperature rise be more than described 13rd preset value, described control module then judges that this indoor set is corresponding and heats electromagnetism Valve breaks down and the interior machine choke valve of this indoor set does not break down.
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