CN106595152B

CN106595152B - A kind of the determination method, apparatus and air-conditioning of air conditioner coolant abnormal circulation

Info

Publication number: CN106595152B
Application number: CN201610937140.0A
Authority: CN
Inventors: 陈泽波
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2016-10-25
Filing date: 2016-10-25
Publication date: 2018-12-28
Anticipated expiration: 2036-10-25
Also published as: CN106595152A

Abstract

The invention discloses a kind of determination method, apparatus of air conditioner coolant abnormal circulation and air-conditionings, this method comprises: under the refrigeration mode of the air-conditioning, the mild indoor environment temperature of evaporator tube for obtaining the indoor environment humidity of the indoor of the air-conditioning, and obtaining the indoor；It determines second temperature difference between first temperature difference between the indoor environment temperature and the evaporator tube temperature and the initial evaporator tube temperature prestored and the evaporator tube temperature, and judges first temperature difference and second temperature difference, whether is less than or equal to respective preset value under the indoor environment humidity；When first temperature difference and second temperature difference are respectively less than or are equal to the respective preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.The solution of the present invention can overcome the defects of False Rate is high, operational reliability is low and maintenance difficulties are big in the prior art, realize the beneficial effect that False Rate is low, operational reliability is high and maintenance difficulties are small.

Description

A kind of the determination method, apparatus and air-conditioning of air conditioner coolant abnormal circulation

Technical field

The invention belongs to air-conditioning technical fields, and in particular to a kind of determination method, apparatus of air conditioner coolant abnormal circulation and Air-conditioning more particularly to a kind of detection method of air-conditioning system refrigerant circulation abnormal protection, device corresponding with this method and tool There is the air-conditioning of the device.

Background technique

Split-type air conditioner (i.e. split air conditioner) is made of, one indoor unit (machine in i.e.) and outdoor unit (i.e. outer machine) The corresponding outer machine of interior machine；Interior machine and outer machine are separately mounted to indoor and outdoors, what centre was connected by pipeline and electric wire Air regulator.Common breakdown maintenance is compressor damage in Split type air conditioner, causes the basic reason master of compressor damage There are high temperature and two kinds of high current, and common high temperature damage is typically due to system and lacks caused by refrigerant.Therefore, effectively Detection air-conditioning system in ground lacks refrigerant, so that carrying out protection in time is very important component part in Air-condition system control, but In the detection whether air-conditioning system lacks refrigerant, False Rate is higher.

In the prior art, there are False Rates it is high, operational reliability is low and maintenance difficulties are big the defects of.

Summary of the invention

It is an object of the present invention in view of the foregoing drawbacks, provide a kind of determination method, apparatus of air conditioner coolant abnormal circulation And air-conditioning, to solve the problems, such as whether air-conditioning system lacks in the detection of refrigerant that False Rate is higher in the prior art, reaches promotion Detect the effect of accuracy.

The present invention provides a kind of determination method of air conditioner coolant abnormal circulation, comprising: under the refrigeration mode of the air-conditioning, The indoor environment humidity of the indoor of the air-conditioning is obtained, and the mild indoor environment temperature of the evaporator tube for obtaining the indoor Degree；The initial evaporator pipe for determining first temperature difference between the indoor environment temperature and the evaporator tube temperature and prestoring Warm second temperature difference between the evaporator tube temperature, and judge first temperature difference and second temperature difference, whether be less than or Equal to respective preset value under the indoor environment humidity；When first temperature difference and second temperature difference are respectively less than or are equal to each From the preset value when, determine that the refrigerant circulation of the air-conditioning is abnormal.

Optionally it is determined that after the refrigerant circulation exception of the air-conditioning, further includes: it is different to carry out refrigerant circulation to the air-conditioning Often protection；And/or the state of the refrigerant circulation exception to the air-conditioning, it alarmed, shown, being sent to default client At least one output.

Optionally, before the indoor environment humidity for obtaining the indoor of the air-conditioning, further includes: opened in the refrigeration mode When dynamic, obtain the indoor initial evaporator tube temperature and initial indoor environment temperature；Determine the initial evaporator tube temperature With the absolute value of the initial temperature differences of the initial indoor environment temperature, if be less than or equal to the first preset value；When described absolute When value is less than or equal to first preset value, determines and need to carry out refrigerant circulation abnormality detection to the air-conditioning, in determination When needing to carry out refrigerant circulation abnormality detection to the air-conditioning, just to the indoor environment humidity, the mild institute of the evaporator tube Indoor environment temperature is stated to be obtained.

Optionally it is determined that after needing to carry out the air-conditioning refrigerant circulation abnormality detection, further includes: will need to described Air-conditioning carries out initial evaporator tube temperature when refrigerant circulation abnormality detection, is stored；And/or obtain the indoor Indoor environment humidity, comprising: determine the operation duration of the compressor of the air-conditioning, if reach the first preset duration；Work as institute When stating operation duration arrival first preset duration, the interior of the indoor detected by humidity sensor is obtained Ambient humidity；And/or obtain the mild indoor environment temperature of evaporator tube of the indoor of the air-conditioning, comprising: obtain by temperature-sensitive Wrap the evaporator tube of the indoor detected the mildly indoor environment temperature；And/or obtain the indoor Initial evaporator tube temperature and initial indoor environment temperature, comprising: obtain the described first of the indoor detected by temperature sensing package The mild initial indoor environment temperature of beginning evaporator tube.

Optionally, and judge that first temperature difference and second temperature difference, whether to be less than or equal to the indoor environment wet Respective preset value under degree, comprising: determine whether the indoor environment humidity is less than default humidity；When the indoor environment humidity When less than the default humidity, the preset value includes the second preset value and third preset value；Whether determine first temperature difference Less than or equal to second preset value and determine whether second temperature difference is less than or equal to the third preset value；Alternatively, When the indoor environment humidity is greater than or equal to the default humidity, the preset value includes that the 4th preset value and the 5th are default Value；Determine first temperature difference whether be less than or equal to the 4th preset value and determine second temperature difference whether be less than or Equal to the 5th preset value.

Optionally it is determined that the refrigerant circulation of the air-conditioning is abnormal, comprising: when the indoor environment humidity is less than described preset When humidity, when first temperature gap is less than or equal to second preset value and second temperature difference is less than or equal to When the third preset value, determine that the refrigerant circulation of the air-conditioning is abnormal；Alternatively, when the indoor environment humidity is greater than or equal to When the default humidity, when first temperature gap be less than or equal to the 4th preset value and second temperature difference it is small When five preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.

Optionally it is determined that the refrigerant circulation of the air-conditioning is abnormal, further includes: determine first temperature difference and second temperature Difference, if in the second preset duration, be all satisfied the respective preset value；

When first temperature difference and second temperature difference, in second preset duration, it is all satisfied respective described pre- If when value, determining that the refrigerant circulation of the air-conditioning is abnormal；

And/or

The indoor environment humidity, comprising: the relative humidity or absolute humidity of indoor environment.

Match with the above method, another aspect of the present invention provides a kind of determining device of air conditioner coolant abnormal circulation, packet It includes: acquiring unit, under the refrigeration mode of the air-conditioning, obtaining the indoor environment humidity of the indoor of the air-conditioning, and Obtain the mild indoor environment temperature of evaporator tube of the indoor；Determination unit, for determine the indoor environment temperature with Between first temperature difference between the evaporator tube temperature and the initial evaporator tube temperature and the evaporator tube temperature that prestore Two temperature difference, and judge first temperature difference and second temperature difference, whether be less than or equal under the indoor environment humidity respectively Preset value；The determination unit is also used to be respectively less than or be equal to respective institute when first temperature difference and second temperature difference When stating preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.

Optionally, further includes: protection location, for carrying out refrigerant circulation abnormal protection to the air-conditioning；And/or output Unit is alarmed, is shown, being sent to default client at least for the state of the refrigerant circulation exception to the air-conditioning A kind of output.

Optionally, wherein the acquiring unit is also used to obtain the indoor when the refrigeration mode starts Initial evaporator tube temperature and initial indoor environment temperature；The determination unit, be also used to determine the initial evaporator tube temperature with The absolute value of the initial temperature differences of the initial indoor environment temperature, if be less than or equal to the first preset value；The determination unit, It is also used to when the absolute value is less than or equal to first preset value, it is different to determine that needs carry out refrigerant circulation to the air-conditioning Often detection, with determine need to carry out refrigerant circulation abnormality detection to the air-conditioning when, just to the indoor environment humidity, described Mildly the indoor environment temperature is obtained evaporator tube.

Optionally, further includes: storage unit, for institute when carrying out refrigerant circulation abnormality detection to the air-conditioning will to be needed Initial evaporator tube temperature is stated, is stored；And/or acquiring unit, comprising: operation duration determining module, for determining the sky The operation duration of the compressor of tune, if reach the first preset duration；Humidity sensor, for reaching institute when the operation duration When stating the first preset duration, the indoor environment humidity of the indoor detected by humidity sensor is obtained；And/or Acquiring unit, further includes: temperature sensing package；Wherein, by the temperature sensing package, the acquiring unit is also used to obtain and be detected by temperature sensing package The mild indoor environment temperature of the evaporator tube for the indoor arrived；It is described to obtain and/or by the temperature sensing package Take unit be also used to obtain the indoor detected by temperature sensing package the initial evaporator tube temperature and the initial interior Environment temperature.

Optionally it is determined that unit, comprising: humidity determining module, for determining it is pre- whether the indoor environment humidity is less than If humidity；Temperature difference determining module, for when the indoor environment humidity is less than the default humidity, the preset value to include the Two preset values and third preset value；Determine whether first temperature difference is less than or equal to described in second preset value and determination Whether second temperature difference is less than or equal to the third preset value；Alternatively, the temperature difference determining module, is also used to when the indoor ring When border humidity is greater than or equal to the default humidity, the preset value includes the 4th preset value and the 5th preset value；Described in determination Whether first temperature difference is less than or equal to the 4th preset value and determines whether second temperature difference is less than or equal to the described 5th Preset value.

Optionally it is determined that unit, further includes: abnormality determining module, for being less than institute when the indoor environment humidity When stating default humidity, when first temperature gap is less than or equal to second preset value and second temperature difference is less than Or when being equal to the third preset value, determine that the refrigerant circulation of the air-conditioning is abnormal；Alternatively, the abnormality determining module, It is also used to when the indoor environment humidity is greater than or equal to the default humidity, when first temperature gap is less than or equal to When 4th preset value and second temperature difference are less than or equal to five preset value, the refrigerant of the air-conditioning is determined Abnormal circulation.

Optionally it is determined that unit, further includes: detection duration determining module, for determining first temperature difference and described the Two temperature difference, if in the second preset duration, be all satisfied the respective preset value；The abnormality determining module, is also used In work as first temperature difference and second temperature difference, in second preset duration, when being all satisfied the respective preset value, Determine that the refrigerant circulation of the air-conditioning is abnormal；And/or the indoor environment humidity, comprising: the relative humidity of indoor environment is exhausted To humidity.

Match with above-mentioned apparatus, further aspect of the present invention provides a kind of air-conditioning, comprising: above-described air conditioner coolant follows The determining device of ring exception.

The solution of the present invention, using the corresponding judgement temperature difference, improves system and lacks fluorine by distinguishing machine difference use environment The accuracy of protection solves the problems, such as that lacking fluorine protection at present accidentally protects, protects not in time.

Further, the solution of the present invention, by being directed to different operating conditions, using the corresponding judgement temperature difference, substantially enhancing is empty The validity for lacking fluorine protection detection is adjusted, machine set system reliability is improved, compressor is avoided to burn.

Further, the solution of the present invention, using the corresponding judgement temperature difference, improves system by the way that the judgement to humidity is added Lack the accuracy of fluorine protection detection.

The solution of the present invention as a result, by lack using the corresponding temperature difference judgement of fluorine protection, solution according to different operating conditions Certainly whether air-conditioning system lacks the higher problem of False Rate in the detection of refrigerant in the prior art, thus, overcome in the prior art The defect that False Rate is high, operational reliability is low and maintenance difficulties are big realizes that False Rate is low, operational reliability is high and maintenance difficulties are small Beneficial effect.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.

Below by drawings and examples, technical scheme of the present invention will be described in further detail.

Detailed description of the invention

Fig. 1 is the flow diagram of an embodiment of the determination method of air conditioner coolant abnormal circulation of the invention；

Fig. 2 is that the process for the embodiment that progress refrigerant circulation abnormality detection is determined the need in method of the invention is shown It is intended to；

Fig. 3 is the flow diagram for the embodiment that humidity obtains in method of the invention；

Fig. 4 is the flow diagram for the embodiment that the temperature difference determines under different humidity in method of the invention；

Fig. 5 is to determine that the process of an embodiment of refrigerant circulation exception is illustrated based on detection duration in method of the invention Figure；

Fig. 6 is the structural schematic diagram of an embodiment of the determining device of air conditioner coolant abnormal circulation of the invention；

Fig. 7 is the operation principle schematic diagram of an embodiment of air-conditioning of the invention.

In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:

102- acquiring unit；1022- operation duration determining module；1024- humidity sensor；1026- temperature sensing package；104- is true Order member；1042- humidity determining module；1044- temperature difference determining module；1046- abnormality determining module；When 1048- is detected Long determining module；106- protection location；108- output unit；110- storage unit.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.

According to an embodiment of the invention, a kind of determination method of air conditioner coolant abnormal circulation is provided, this hair as shown in Figure 1 The flow diagram of one embodiment of bright method.The determination method of the air conditioner coolant abnormal circulation may include:

At step S110, under the refrigeration mode of the air-conditioning, the indoor environment for obtaining the indoor of the air-conditioning is wet Degree, and the mild indoor environment temperature of evaporator tube for obtaining the indoor.

Such as: under refrigeration mode, into detection (whether lacking the detection process of refrigerant).

As a result, by obtaining the indoor environment humidity under refrigeration mode, the mild indoor environment temperature of evaporator tube, Ke Yiwei Abnormal the determining of refrigerant circulation provides accurately foundation, high reliablity.

Optionally, the indoor environment humidity may include: the relative humidity or absolute humidity of indoor environment.

Such as: indoor relative humidity RH_{Inner ring}。

As a result, by the humidity of diversified forms, humidity can be improved and obtain and the convenience of humidity processing and reliable Property.

In an optional example, can humidity obtains in method of the invention as shown in connection with fig. 3 a embodiment stream Journey schematic diagram further illustrates the detailed process that the indoor environment humidity of indoor of the air-conditioning is obtained in step S110.

Step S310 determines the operation duration of the compressor of the air-conditioning, if reaches the first preset duration.

Step S320, when the operation duration reaches first preset duration, acquisition is detected by humidity sensor The indoor the indoor environment humidity.

Such as: it can use the humidity sensor that some types have been configured.

Such as: relative humidity RH on the inside of humidity sensor sensing chamber_{Inner ring}。

Such as: when entering detection, compressor start continuous operation t₁After time, envionmental humidity in the moment is detected RH%.

As a result, by carrying out humidity acquisition when compressor runs the first preset duration, the humidity obtained can be made Stability is good；Indoor environment humidity is detected by humidity sensor, the humidity accuracy obtained can be made good, and acquisition modes letter Just.

In an optional example, the mild indoor environment of evaporator tube of the indoor of the air-conditioning is obtained in step S110 Temperature may include: to obtain the evaporator tube of the indoor detected by temperature sensing package the mildly indoor environment temperature Degree.

Such as: the first temperature sensing package can detecte indoor side pipe medium temperature degree (i.e. the evaporator tube temperature of indoor) T_{Inner tube}, the second sense Thermometer bulb can detecte indoor environment temperature (i.e. indoor environment temperature) T_{Inner ring}。

The mild indoor environment temperature of evaporator tube is obtained by temperature sensing package as a result, the mode of acquisition is easy, the result of acquisition Reliably.

At step S120, determine first temperature difference between the indoor environment temperature and the evaporator tube temperature and Second temperature difference between initial evaporator tube temperature and the evaporator tube temperature prestored, and judge first temperature difference and described Whether two temperature difference are less than or equal to respective preset value under the indoor environment humidity.

Such as: the operating condition to distinguish different temperatures, humidity, to be carried out lacking fluorine using the corresponding temperature difference according to different operating conditions The judgement of protection.

As a result, by determining first temperature difference and second temperature difference, if satisfaction is respectively adapted to indoor environment humidity default The abnormal i.e. scarce fluorine of refrigerant circulation of air-conditioning system can be improved so that the judgement to humidity to be added in the judgement of the corresponding temperature difference in value Protect the accuracy of detection.

It, can the temperature difference determines under different humidity in method of the invention as shown in connection with fig. 4 one in an optional example The flow diagram of embodiment, further illustrate in step S120 and judge first temperature difference and second temperature difference, whether Less than or equal to the detailed process of respective preset value under the indoor environment humidity.

Step S410, determines whether the indoor environment humidity is less than default humidity.

Step S420, when the indoor environment humidity is less than the default humidity, the preset value may include second Preset value and third preset value；Determine whether first temperature difference is less than or equal to second preset value and determines described the Whether two temperature difference are less than or equal to the third preset value.Alternatively,

Such as: if RH% < A, detects whether to meet T_{Inner ring}-T_{Inner tube}≤T₂And T_{Inner tube 0}-T_{Inner tube}≤T₃。

Step S430, when the indoor environment humidity is greater than or equal to the default humidity, the preset value be can wrap Include the 4th preset value and the 5th preset value；Determine whether first temperature difference is less than or equal to the 4th preset value and determines Whether second temperature difference is less than or equal to the 5th preset value.

Such as: if RH% >=A, detect whether to meet T_{Inner ring}-T_{Inner tube}≤T₄And T_{Inner tube 0}-T_{Inner tube}≤T₅。

As a result, by determining the relationship of indoor environment humidity and default humidity, and then corresponded to according to determining relationship The judgement of the temperature difference can substantially enhance the validity of lack of fluorine of air-conditioners protection detection, improve to be judged in conjunction with humidity with the temperature difference Machine set system (i.e. air-conditioning system) reliability, avoids compressor from burning.

At step S130, when first temperature difference and second temperature difference are respectively less than or are equal to the respective preset value When, determine that the refrigerant circulation of the air-conditioning is abnormal.

Such as: example shown in Figure 7 can distinguish machine difference use environment, using the corresponding judgement temperature difference.

As a result, by determining refrigerant circulation when the corresponding temperature difference meets the preset value being respectively adapted to indoor environment humidity It is abnormal, and then, using the corresponding judgement temperature difference, air-conditioning system can be improved under the premise of distinguishing the different use environments of air-conditioning Lack the accuracy of fluorine protection.

In an optional example, determines that the refrigerant circulation of the air-conditioning is abnormal in step S130, may include: when described Indoor environment humidity be less than the default humidity when, when first temperature gap be less than or equal to second preset value and When second temperature difference is less than or equal to the third preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.Alternatively,

Such as: if RH% < A, detects T_{Inner ring}-T_{Inner tube}≤T₂And T_{Inner tube 0}-T_{Inner tube}≤T₃, while meeting conditions above, just sentence It is set to " refrigerant circulation is abnormal " protection.

In an optional example, determines that the refrigerant circulation of the air-conditioning is abnormal in step S130, can also include: to work as institute When stating indoor environment humidity more than or equal to the default humidity, when first temperature gap is less than or equal to the described 4th in advance If value and when second temperature difference is less than or equal to five preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.

Such as: if RH% >=A, detect T_{Inner ring}-T_{Inner tube}≤T₄And T_{Inner tube 0}-T_{Inner tube}≤T₅, while meeting conditions above, just sentence It is set to " refrigerant circulation is abnormal " protection.

Wherein, first preset value, the 4th preset value, the 5th preset value are close.And/or described second Preset value and the third preset value are close.And/or first preset value is less than second preset value.

Such as: it is above respectively judge benchmark (such as: t₁、T₁、T₂、T₃、T₄、T₅, A), can according to not homologous ray carry out assignment, For details, reference can be made to the following table 1.

Table 1: assignment is carried out according to not homologous ray

t₁

T₁

T₂

T₃

T₄

T₅

A

8~10min

1~3 DEG C

2~6 DEG C

1~3 DEG C

70~90%

As a result, by determining that different indoor environments are wet based on the judging result for corresponding to the temperature difference under different indoor environment humidity Whether the refrigerant circulation for spending lower air-conditioning is abnormal, can solve the problems such as scarce fluorine protection misses protection, protection not in time, is conducive to be promoted User experience.

In an optional example, determines that the refrigerant circulation of the air-conditioning is abnormal in step S130, can also include: to be based on Detection duration determines refrigerant circulation exception.It is alternatively possible to be determined in method of the invention based on detection duration as shown in connection with fig. 5 The flow diagram of one embodiment of refrigerant circulation exception further illustrates the tool that refrigerant circulation exception is determined based on detection duration Body process.

Step S510 determines first temperature difference and second temperature difference, if in the second preset duration, is all satisfied each From the preset value.

Step S520 in second preset duration, is all satisfied respectively when first temperature difference and second temperature difference The preset value when, determine that the refrigerant circulation of the air-conditioning is abnormal.

Such as: continuous t₂Time detects T_{Inner ring}-T_{Inner tube}≤T₂And T_{Inner tube 0}-T_{Inner tube}≤T₃。

Such as: continuous t₂Time detects T_{Inner ring}-T_{Inner tube}≤T₄And T_{Inner tube 0}-T_{Inner tube}≤T₅。

As a result, by determine air-conditioning refrigerant circulation whether exception during, be added detection duration judgement, favorably In improve to the refrigerant circulation of air-conditioning whether the accuracy of Yi Chang judging result, reduction False Rate, and then can preferably mention Rise user experience.

In an optional embodiment, after the refrigerant circulation exception for determining the air-conditioning in step s 130, may be used also To include: to carry out refrigerant circulation abnormal protection to the air-conditioning.

Such as: all loads of outdoor unit are closed, such as compressor, outer blower, indoor fan original operating status is kept, reports " cold Matchmaker's abnormal circulation protection " (such as: corresponding failure code name is shown on line control machine).

As a result, by being protected in time when determining refrigerant circulation exception, can be improved operation of air conditioner reliability and Stability, user experience is more preferably.

In an optional embodiment, after the refrigerant circulation exception for determining the air-conditioning in step s 130, may be used also To include: the state to the refrigerant circulation exception of the air-conditioning, at least the one of default client is alarmed, shown, is sent to Kind output.

As a result, by being exported to the state of refrigerant circulation exception when determining refrigerant circulation exception so that user and When understand air conditioner coolant abnormal circulation state and give maintenance in time, hommization more preferably, reliability is more preferably.

In an optional embodiment, obtain in step s 110 the indoor of the air-conditioning indoor environment humidity it Before, it can also comprise determining whether to need to carry out refrigerant circulation abnormality detection to the air-conditioning.It is alternatively possible in conjunction with Fig. 2 institute Show the flow diagram for determining the need for carrying out an embodiment of refrigerant circulation abnormality detection in method of the invention, further Illustrate the detailed process for determining the need for carrying out the air-conditioning refrigerant circulation abnormality detection.

Step S210, the refrigeration mode starting when, obtain the indoor initial evaporator tube temperature and initial room Interior environment temperature.

Optionally, obtained in step S210 the indoor initial evaporator tube temperature and initial indoor environment temperature, It may include: the initial evaporator tube temperature and the initial indoor environment for obtaining the indoor detected by temperature sensing package Temperature.

Initial evaporator tube temperature and initial indoor environment temperature are obtained by temperature sensing package as a result, the mode of acquisition is easy, obtains The result accuracy taken is good, high reliablity.

Step S220 determines the absolute of the initial evaporator tube temperature and the initial temperature differences of the initial indoor environment temperature Value, if be less than or equal to the first preset value.

Step S230, when the absolute value be less than or equal to first preset value when, determine need to the air-conditioning into Row refrigerant circulation abnormality detection, with determine need to the air-conditioning carry out refrigerant circulation abnormality detection when, just to the interior Mildly the indoor environment temperature is obtained for ambient humidity, the evaporator tube.

Such as: under refrigeration mode, detect initial │ T_{Inner ring 0}-T_{Inner tube 0}│≤T₁, (whether lack the detection of refrigerant into detection Process).

As a result, by determining the need for carrying out refrigerant circulation abnormality detection when refrigeration mode starts, and then can be It is detected in time when needing, reliability and hommization can be guaranteed well；When not needed without detection, on the one hand It will not influence the normal operation of refrigeration mode, another aspect energy-saving effect is good.

In an optional example, in step S230 determine need to the air-conditioning carry out refrigerant circulation abnormality detection it It afterwards, can also include: to carry out initial evaporator tube temperature when needing to air-conditioning progress refrigerant circulation abnormality detection Storage.

It is cold to facilitate as a result, by the storing initial evaporator tube temperature when determination needs to carry out refrigerant circulation abnormality detection It is called at any time in the detection of matchmaker's abnormal circulation, so that detection is more convenient；In addition, it will require when carrying out refrigerant circulation abnormality detection Initial evaporator tube temperature is for that can make testing result more accurate, relatively reliable in refrigerant circulation abnormality detection.

Through a large amount of verification experimental verification, used using the technical solution of the present embodiment by distinguishing machine difference use environment The corresponding judgement temperature difference improves the accuracy that system lacks fluorine protection, solves accidentally protection, protection the asking not in time of scarce fluorine protection at present Topic.

According to an embodiment of the invention, additionally providing a kind of air-conditioning of the determination method corresponding to air conditioner coolant abnormal circulation The determining device of refrigerant circulation exception.The structural schematic diagram of one embodiment of the device of the invention shown in Figure 6.The air-conditioning cold The determining device of matchmaker's abnormal circulation can may include: acquiring unit 102 and determination unit 104.

In one example, acquiring unit 102 can be used under the refrigeration mode of the air-conditioning, obtain the air-conditioning Indoor indoor environment humidity, and the mild indoor environment temperature of evaporator tube for obtaining the indoor.The acquiring unit 102 concrete function and processing are referring to step S110.

Such as: indoor relative humidity RH_{Inner ring}。

Optionally, acquiring unit 102 may include: operation duration determining module 1022 and humidity sensor 1024.

In an optional specific example, operation duration determining module 1022 is determined for the compression of the air-conditioning The operation duration of machine, if reach the first preset duration.The concrete function of the operation duration determining module 1022 and processing referring to Step S310.

In an optional specific example, humidity sensor 1024 can be used for reaching described the when the operation duration When one preset duration, the indoor environment humidity of the indoor detected by humidity sensor 1024 is obtained.The humidity The concrete function of sensor 1024 and processing are referring to step S320.

Such as: it can use the humidity sensor that some types have been configured.

Optionally, acquiring unit 102 can also include: temperature sensing package 1026.

In an optional specific example, by the temperature sensing package 1026, the acquiring unit 102 can be also used for obtaining The mild indoor environment temperature of the evaporator tube of the indoor detected by temperature sensing package 1026.

In one example, determination unit 104 are determined for the indoor environment temperature and the evaporator tube temperature Between first temperature difference and the initial evaporator tube temperature and the evaporator tube temperature that prestore between second temperature difference, and judge Whether first temperature difference and second temperature difference are less than or equal to respective preset value under the indoor environment humidity.This is really The concrete function of order member 104 and processing are referring to step S120.

Optionally it is determined that unit 104, may include: humidity determining module 1042 and temperature difference determining module 1044.

In an optional specific example, humidity determining module 1042, being determined for the indoor environment humidity is It is no to be less than default humidity.The concrete function of the humidity determining module 1042 and processing are referring to step S410.

In an optional specific example, temperature difference determining module 1044 can be used for being less than when the indoor environment humidity When the default humidity, the preset value may include the second preset value and third preset value.Whether determine first temperature difference Less than or equal to second preset value and determine whether second temperature difference is less than or equal to the third preset value.The temperature The concrete function of poor determining module 1044 and processing are referring to step S420.

In an optional specific example, the temperature difference determining module 1044 be can be also used for when the indoor environment is wet When degree is greater than or equal to the default humidity, the preset value may include the 4th preset value and the 5th preset value.Described in determination Whether first temperature difference is less than or equal to the 4th preset value and determines whether second temperature difference is less than or equal to the described 5th Preset value.The concrete function of the temperature difference determining module 1044 and processing see also step S430.

In one example, the determination unit 104 can be also used for when first temperature difference and second temperature difference are equal When less than or equal to the respective preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.The specific function of the determination unit 104 It can and handle and see also step S130.

Optionally it is determined that unit 104, can also include: abnormality determining module 1046.

In an optional specific example, abnormality determining module 1046 can be used for when the indoor environment humidity When less than the default humidity, when first temperature gap is less than or equal to second preset value and second temperature difference When value is less than or equal to the third preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.Alternatively,

In an optional specific example, the abnormality determining module 1046 be can be also used for when the indoor ring Border humidity be greater than or equal to the default humidity when, when first temperature gap be less than or equal to the 4th preset value and When second temperature difference is less than or equal to five preset value, determine that the refrigerant circulation of the air-conditioning is abnormal.

Table 1: assignment is carried out according to not homologous ray

t₁

T₁

T₂

T₃

T₄

T₅

A

8~10min

1~3 DEG C

2~6 DEG C

1~3 DEG C

70~90%

Optionally it is determined that unit 104, can also include: detection duration determining module 1048.

In an optional specific example, detect duration determining module 1048, be determined for first temperature difference and Second temperature difference, if in the second preset duration, be all satisfied the respective preset value.The detection duration determining module 1048 concrete function and processing are referring to step S510.

In an optional specific example, the abnormality determining module 1046 be can be also used for when first temperature Poor and described second temperature difference when being all satisfied the respective preset value, determines the air-conditioning in second preset duration Refrigerant circulation is abnormal.The concrete function of the abnormality determining module 1046 and processing are referring to step S520.

It can also include: protection location 106, and/or output unit 108 in an optional embodiment.

In an optional example, protection location 106 can be used for carrying out refrigerant circulation abnormal protection to the air-conditioning.

In an optional example, output unit 108 can be used for the state to the refrigerant circulation exception of the air-conditioning, It alarmed, shown, is sent at least one output of default client.

In an optional embodiment, by the acquiring unit 102 and the determination unit 104, it can be also used for It determines the need for carrying out refrigerant circulation abnormality detection to the air-conditioning.

In an optional example, the acquiring unit 102 can be also used for obtaining when the refrigeration mode starts The initial evaporator tube temperature of the indoor and initial indoor environment temperature.The concrete function of the acquiring unit 102 and processing are also Referring to step S210.

Optionally, by the temperature sensing package 1026, the acquiring unit 102 can be also used for obtaining and be examined by temperature sensing package 1026 The initial evaporator tube temperature of the indoor measured and the initial indoor environment temperature.

In an optional example, the determination unit 104 can be also used for determining the initial evaporator tube temperature and institute State the absolute value of the initial temperature differences of initial indoor environment temperature, if be less than or equal to the first preset value.The determination unit 104 Concrete function and processing see also step S220.

In an optional example, the determination unit 104 be can be also used for when the absolute value is less than or equal to described When the first preset value, determine need to the air-conditioning carry out refrigerant circulation abnormality detection, with determine need to the air-conditioning into When row refrigerant circulation abnormality detection, just to the indoor environment humidity, the evaporator tube mildly the indoor environment temperature into Row obtains.The concrete function of the determination unit 104 and processing see also step S230.

It can also include: storage unit 110 in an optional example.

Optionally, storage unit 110 can be used for that institute when carrying out the air-conditioning refrigerant circulation abnormality detection will be needed Initial evaporator tube temperature is stated, is stored.

The processing and function realized by the device of the present embodiment essentially correspond to earlier figures 1 to method shown in fig. 5 Embodiment, principle and example, therefore not detailed place in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment Bright, this will not be repeated here.

Through a large amount of verification experimental verification, sentenced by being directed to different operating conditions using corresponding using technical solution of the present invention The disconnected temperature difference substantially enhances the validity of lack of fluorine of air-conditioners protection detection, improves machine set system reliability, compressor is avoided to burn.

According to an embodiment of the invention, additionally providing a kind of sky of the determining device corresponding to air conditioner coolant abnormal circulation It adjusts.The air-conditioning includes: the determining device of above-described air conditioner coolant abnormal circulation.

In one example, in the air-conditioning, if the detection process for lacking refrigerant, may include: by inside tube temperature with And the variation comparison of inside environment temperature is judged.

As it can be seen that the detection process, detection mode is simple, is suitable for most operating condition, is set with to temperature change value High requirement.But under the operating condition of high temperature and humidity, since system latent heat accounting is big, evaporator tube temperature is opposite with the environment temperature temperature difference It is lower, the judgement for lacking fluorine is carried out according to the same temperature difference, it is understood that there may be erroneous judgement.

In one example, in the air-conditioning, if lack in the detection process of refrigerant, can use some types and matched The humidity sensor set.

Such as: this can be used, to distinguish the operating condition of different temperatures, humidity, to be used according to different operating conditions The corresponding temperature difference lack the judgement of fluorine protection.

In an optional example, in the air-conditioning, if lack in the detection process of refrigerant, example shown in Figure 7, Machine difference use environment can be distinguished, using the corresponding judgement temperature difference.

Optionally, the first temperature sensing package can detecte indoor side pipe medium temperature degree (i.e. the evaporator tube temperature of indoor) T_{Inner tube}, second Temperature sensing package can detecte indoor environment temperature (i.e. indoor environment temperature) T_{Inner ring}, humidity sensor sensing chamber inside relative humidity RH_{Inner ring}。

Optionally, the detection process for whether lacking refrigerant may include:

Under step 1, refrigeration mode, initial │ T is detected_{Inner ring}0-T_{Inner tube}0│≤T₁, (whether lack the inspection of refrigerant into detection Survey process).

Step 2, into detection when, compressor start continuous operation t₁After time, envionmental humidity in the moment is detected RH%.

In a more optional specific example, if RH% < A, continuous t₂Time detects T_{Inner ring}-T_{Inner tube}≤T₂And T_{Inner tube 0}- T_{Inner tube}≤T₃, while meeting conditions above, it is determined that " refrigerant circulation is abnormal " protection.

In a more optional specific example, if RH% >=A, continuous t₂Time detects T_{Inner ring}-T_{Inner tube}≤T₄And T_{Inner tube 0}- T_{Inner tube}≤T₅, while meeting conditions above, it is determined that " refrigerant circulation is abnormal " protection.

Wherein, above each judgement benchmark (such as: t₁、T₁、T₂、T₃、T₄、T₅, A), can according to not homologous ray carry out assignment, For details, reference can be made to the following table 1.

Table 1: assignment is carried out according to not homologous ray

t₁

T₁

T₂

T₃

T₄

T₅

A

8~10min

1~3 DEG C

2~6 DEG C

1~3 DEG C

70~90%

The processing and function realized by the air-conditioning of the present embodiment essentially correspond to the implementation of aforementioned device shown in fig. 6 Example, principle and example, therefore not detailed place in the description of the present embodiment, may refer to the related description in previous embodiment, This is not repeated them here.

Through a large amount of verification experimental verification, using technical solution of the present invention, by the way that the judgement to humidity is added, use is corresponding Judge the temperature difference, the system that improves lacks the accuracy of fluorine protection detection.

To sum up, it will be readily appreciated by those skilled in the art that under the premise of not conflicting, above-mentioned each advantageous manner can be certainly It combined, be superimposed by ground.

The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.

Claims

1. a kind of determination method of air conditioner coolant abnormal circulation characterized by comprising

Under the refrigeration mode of the air-conditioning, indoor environment humidity, the mild room of evaporator tube of the indoor of the air-conditioning are obtained Interior environment temperature；

The initial evaporator pipe for determining first temperature difference between the indoor environment temperature and the evaporator tube temperature and prestoring Warm second temperature difference between the evaporator tube temperature, and judge first temperature difference and second temperature difference, whether be less than or Equal to respective preset value under the indoor environment humidity；

When first temperature difference and second temperature difference are respectively less than or are equal to the respective preset value, the air-conditioning is determined Refrigerant circulation is abnormal.

2. the method according to claim 1, wherein also being wrapped after the refrigerant circulation exception of the determining air-conditioning It includes:

Refrigerant circulation abnormal protection is carried out to the air-conditioning；And/or the state of the refrigerant circulation exception to the air-conditioning, it carries out It alarms, show, being sent at least one output of default client.

3. method according to claim 1 or 2, which is characterized in that the indoor environment for obtaining the indoor of the air-conditioning is wet Before degree, further includes:

The refrigeration mode starting when, obtain the indoor initial evaporator tube temperature and initial indoor environment temperature；

Determine the absolute value of the initial temperature differences of the initial evaporator tube temperature and the initial indoor environment temperature, if be less than or Equal to the first preset value；

When the absolute value is less than or equal to first preset value, determines and need to carry out the air-conditioning refrigerant circulation exception Detection, with determine need to the air-conditioning carry out refrigerant circulation abnormality detection when, just to the indoor environment humidity, the steaming Hair device tube temperature and the indoor environment temperature are obtained.

4. according to the method described in claim 3, it is characterized in that,

It determines after needing to carry out the air-conditioning refrigerant circulation abnormality detection, further includes:

Initial evaporator tube temperature when carrying out refrigerant circulation abnormality detection to the air-conditioning will be needed, is stored；

And/or

Obtain the indoor environment humidity of the indoor, comprising:

Determine the operation duration of the compressor of the air-conditioning, if reach the first preset duration；

When the operation duration reaches first preset duration, the indoor detected by humidity sensor is obtained The indoor environment humidity；

And/or

Obtain the mild indoor environment temperature of evaporator tube of the indoor of the air-conditioning, comprising:

Obtain the evaporator tube of the indoor detected by temperature sensing package the mildly indoor environment temperature；

And/or

Obtain the indoor initial evaporator tube temperature and initial indoor environment temperature, comprising:

The initial evaporator tube temperature for the indoor that acquisition is detected by temperature sensing package and the initial indoor environment temperature.

5. according to the method described in claim 3, it is characterized in that, and judging first temperature difference and second temperature difference, being It is no to be less than or equal to respective preset value under the indoor environment humidity, comprising:

Determine whether the indoor environment humidity is less than default humidity；

When the indoor environment humidity is less than the default humidity, the preset value includes that the second preset value and third are default Value；Determine first temperature difference whether be less than or equal to second preset value and determine second temperature difference whether be less than or Equal to the third preset value；Alternatively,

When the indoor environment humidity is greater than or equal to the default humidity, the preset value includes the 4th preset value and the 5th Preset value；Determine whether first temperature difference is less than or equal to the 4th preset value and determines whether second temperature difference is small In or equal to the 5th preset value.

6. according to the method described in claim 4, it is characterized in that, and judging first temperature difference and second temperature difference, being It is no to be less than or equal to respective preset value under the indoor environment humidity, comprising:

7. method according to claim 5 or 6, which is characterized in that determine that the refrigerant circulation of the air-conditioning is abnormal, comprising:

When the indoor environment humidity is less than the default humidity, when first temperature gap is less than or equal to described second When preset value and second temperature difference are less than or equal to the third preset value, determine that the refrigerant circulation of the air-conditioning is abnormal； Alternatively,

When the indoor environment humidity is greater than or equal to the default humidity, when first temperature gap is less than or equal to institute When stating the 4th preset value and second temperature difference and being less than or equal to five preset value, determine that the refrigerant of the air-conditioning follows Ring is abnormal.

8. according to claim 1,2, method described in one of 4-6, which is characterized in that

Determine that the refrigerant circulation of the air-conditioning is abnormal, further includes:

Determine first temperature difference and second temperature difference, if in the second preset duration, be all satisfied respective described default Value；

When first temperature difference and second temperature difference, in second preset duration, it is all satisfied the respective preset value When, determine that the refrigerant circulation of the air-conditioning is abnormal；

And/or

9. according to the method described in claim 3, it is characterized in that,

And/or

10. the method according to the description of claim 7 is characterized in that

And/or

11. a kind of determining device of air conditioner coolant abnormal circulation characterized by comprising

Acquiring unit, under the refrigeration mode of the air-conditioning, obtaining the indoor environment humidity of the indoor of the air-conditioning, and Obtain the mild indoor environment temperature of evaporator tube of the indoor；

Determination unit, for determining first temperature difference between the indoor environment temperature and the evaporator tube temperature and prestoring Initial evaporator tube temperature and the evaporator tube temperature between second temperature difference, and judge first temperature difference and it is described second temperature Whether difference is less than or equal to respective preset value under the indoor environment humidity；

The determination unit is also used to when first temperature difference and second temperature difference are respectively less than or described default equal to respective When value, determine that the refrigerant circulation of the air-conditioning is abnormal.

12. device according to claim 11, which is characterized in that further include:

Protection location, for carrying out refrigerant circulation abnormal protection to the air-conditioning；And/or

Output unit is alarmed, is shown, being sent to default client for the state of the refrigerant circulation exception to the air-conditioning At least one output at end.

13. device according to claim 11 or 12, which is characterized in that wherein,

The acquiring unit, be also used to the refrigeration mode start when, obtain the indoor initial evaporator tube temperature and Initial indoor environment temperature；

The determination unit is also used to determine the initial temperature differences of the initial evaporator tube temperature Yu the initial indoor environment temperature Absolute value, if be less than or equal to the first preset value；

The determination unit is also used to determine and need to described when the absolute value is less than or equal to first preset value Air-conditioning carry out refrigerant circulation abnormality detection, with determine need to the air-conditioning carry out refrigerant circulation abnormality detection when, just to institute Stating indoor environment humidity, the evaporator tube, mildly the indoor environment temperature is obtained.

14. device according to claim 13, which is characterized in that

Further include:

Storage unit, for initial evaporator tube temperature when carrying out refrigerant circulation abnormality detection to the air-conditioning will to be needed, It is stored；

And/or

Acquiring unit, comprising:

Operation duration determining module, the operation duration of the compressor for determining the air-conditioning, if reach the first preset duration；

Humidity sensor, for when the operation duration reaches first preset duration, acquisition to be detected by humidity sensor The indoor environment humidity for the indoor arrived；

And/or

Acquiring unit, further includes: temperature sensing package；Wherein,

By the temperature sensing package, the acquiring unit is also used to obtain the evaporation of the indoor detected by temperature sensing package Device tube temperature and the indoor environment temperature；

And/or

By the temperature sensing package, the acquiring unit is also used to obtain the described initial of the indoor detected by temperature sensing package The mild initial indoor environment temperature of evaporator tube.

15. device according to claim 13, which is characterized in that determination unit, comprising:

Humidity determining module, for determining whether the indoor environment humidity is less than default humidity；

Temperature difference determining module, for when the indoor environment humidity is less than the default humidity, the preset value to include second Preset value and third preset value；Determine whether first temperature difference is less than or equal to second preset value and determines described the Whether two temperature difference are less than or equal to the third preset value；Alternatively,

The temperature difference determining module is also used to when the indoor environment humidity is greater than or equal to the default humidity, described pre- If value includes the 4th preset value and the 5th preset value；Determine first temperature difference whether be less than or equal to the 4th preset value, And determine whether second temperature difference is less than or equal to the 5th preset value.

16. device according to claim 14, which is characterized in that determination unit, comprising:

17. device according to claim 15 or 16, which is characterized in that determination unit, further includes:

Abnormality determining module is used for when the indoor environment humidity is less than the default humidity, when first temperature Difference is determined less than or equal to second preset value and when second temperature difference is less than or equal to the third preset value The refrigerant circulation of the air-conditioning is abnormal；Alternatively,

The abnormality determining module is also used to when the indoor environment humidity is greater than or equal to the default humidity, when First temperature gap is less than or equal to the 4th preset value and second temperature difference is less than or equal to the described 5th in advance If when value, determining that the refrigerant circulation of the air-conditioning is abnormal.

18. according to claim 11,12, device described in one of 14-16, which is characterized in that

Determination unit, further includes:

Duration determining module is detected, for determining first temperature difference and second temperature difference, if in the second preset duration, It is all satisfied the respective preset value；

The abnormality determining module is also used to when first temperature difference and second temperature difference, when described second is default In length, when being all satisfied the respective preset value, determine that the refrigerant circulation of the air-conditioning is abnormal；

And/or

19. device according to claim 13, which is characterized in that

Determination unit, further includes:

And/or

20. device according to claim 17, which is characterized in that

Determination unit, further includes:

And/or

21. a kind of air-conditioning characterized by comprising the air conditioner coolant abnormal circulation as described in claim 11-20 is any is really Determine device.