阅读说明：本技术 电子膨胀阀故障诊断方法和装置、空调和存储介质 (Electric expansion valve method for diagnosing faults and device, air-conditioning and storage medium ) 是由 刘思源 程琦 黄凯亮 覃业星 钟海玲 于 2019-09-24 设计创作，主要内容包括：本公开涉及一种电子膨胀阀故障诊断方法和装置、空调和存储介质。该电子膨胀阀故障诊断方法包括：在压缩机启动后的运行时间达到预定时间的情况下,获取低压压力对应的蒸发温度；将低压压力对应的蒸发温度与预定温度值进行比较；根据低压压力对应的蒸发温度和预定温度值的比较结果,判断电子膨胀阀是否发生故障。本公开可以通过低压压力对应的蒸发温度与预定温度值比较,判断电子膨胀阀的动作是否正常,从而实现对机组元器件运行情况的监控,保证机组运行良好。(This disclosure relates to a kind of electric expansion valve method for diagnosing faults and device, air-conditioning and storage medium.In the case that the electric expansion valve method for diagnosing faults includes: that the runing time after compressor start reaches the predetermined time, the corresponding evaporating temperature of low pressure is obtained；The corresponding evaporating temperature of low pressure is compared with predetermined temperature value；According to the comparison result of low pressure corresponding evaporating temperature and predetermined temperature value, judge whether electric expansion valve breaks down.The disclosure can judge whether the movement of electric expansion valve is normal by the corresponding evaporating temperature of low pressure compared with predetermined temperature value, to realize the monitoring to unit component operating condition, guarantee unit operational excellence.)

1. a kind of electric expansion valve method for diagnosing faults characterized by comprising

In the case that runing time after compressor start reaches the predetermined time, the corresponding evaporating temperature of low pressure is obtained；

The corresponding evaporating temperature of low pressure is compared with predetermined temperature value；

According to the comparison result of low pressure corresponding evaporating temperature and predetermined temperature value, judge whether electric expansion valve occurs event Barrier.

2. electric expansion valve method for diagnosing faults according to claim 1, which is characterized in that described corresponding according to pressure The comparison result of evaporating temperature and predetermined temperature value, judging whether electric expansion valve breaks down includes:

In the case where the corresponding evaporating temperature of low pressure is less than or equal to predetermined temperature value, determine that electronic expansion valve events are different Often, electric expansion valve breaks down；

In the case where the corresponding evaporating temperature of low pressure is greater than predetermined temperature value, determine that electronic expansion valve events are normal, electric Sub- expansion valve does not break down.

3. electric expansion valve method for diagnosing faults according to claim 1 or 2, which is characterized in that further include:

Determine at least one in predetermined time and predetermined temperature value.

4. electric expansion valve method for diagnosing faults according to claim 3, which is characterized in that the determining predetermined time packet It includes:

It is held time according to refrigerant type and complete machine control model setting electric expansion valve initial opening；

It is held time according to electric expansion valve initial opening and determines corresponding procurement lead time；

It is held time according to electric expansion valve initial opening and determines the predetermined time with the difference of procurement lead time.

5. electric expansion valve method for diagnosing faults according to claim 3, which is characterized in that the determining predetermined temperature value Include:

Determine the corresponding evaporating temperature of low pressure minimum guard value；

Corresponding predetermined temperature difference is determined according to the corresponding evaporating temperature of low pressure minimum guard value；

Predetermined temperature value is determined according to the difference of the corresponding evaporating temperature of low pressure minimum guard value and predetermined temperature difference.

6. a kind of electric expansion valve trouble-shooter characterized by comprising

Temperature determination module in the case where reaching the predetermined time for the runing time after compressor start, obtains low pressure pressure The corresponding evaporating temperature of power；

Comparison module, for the corresponding evaporating temperature of low pressure to be compared with predetermined temperature value；

Fault diagnosis module judges electricity for the comparison result according to low pressure corresponding evaporating temperature and predetermined temperature value Whether sub- expansion valve breaks down.

7. electric expansion valve trouble-shooter according to claim 6, which is characterized in that the electric expansion valve failure Diagnostic device is for executing the operation for realizing electric expansion valve method for diagnosing faults according to any one of claims 1 to 5.

8. a kind of electric expansion valve trouble-shooter characterized by comprising

Memory, for storing instruction；

Processor, for executing described instruction, so that the electric expansion valve trouble-shooter, which executes, realizes such as claim The operation of electric expansion valve method for diagnosing faults described in any one of 1-5.

9. a kind of air-conditioning, which is characterized in that including the electric expansion valve fault diagnosis dress as described in any one of claim 6-8 It sets.

10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to It enables, electric expansion valve method for diagnosing faults according to any one of claims 1 to 5 is realized when described instruction is executed by processor.

Technical field

This disclosure relates to airconditioning control field, in particular to a kind of electric expansion valve method for diagnosing faults and device, air-conditioning And storage medium.

Background technique

Air-cooled screw unit cooling capacity is larger, and the throttle valve used is mostly the interior electric expansion valve for having motor.

Summary of the invention

Inventors discovered through research that: it is influenced by machining accuracy or production control, the electric expansion valve of air-cooled screw unit Often occur in use because electric expansion valve wiring is unstable or pipeline in have electric expansion valve motor caused by impurity Abnormality is acted, but unit can correctly evaluate the phenomenon without electric expansion valve feedback signal.

In view of in the above technical problem at least one of, present disclose provides a kind of electric expansion valve method for diagnosing faults and Device, air-conditioning and storage medium can judge that electronics is swollen by the corresponding evaporating temperature of low pressure compared with predetermined temperature value Whether the movement of swollen valve is normal.

According to one aspect of the disclosure, a kind of electric expansion valve method for diagnosing faults is provided, comprising:

In the case that runing time after compressor start reaches the predetermined time, the corresponding evaporation temperature of low pressure is obtained Degree；

The corresponding evaporating temperature of low pressure is compared with predetermined temperature value；

According to the comparison result of low pressure corresponding evaporating temperature and predetermined temperature value, judge whether electric expansion valve is sent out Raw failure.

In some embodiments of the present disclosure, the comparison knot according to the corresponding evaporating temperature of pressure and predetermined temperature value Fruit, judging whether electric expansion valve breaks down includes:

In the case where the corresponding evaporating temperature of low pressure is less than or equal to predetermined temperature value, electronic expansion valve events are determined Abnormal, electric expansion valve breaks down；

In the case where the corresponding evaporating temperature of low pressure is greater than predetermined temperature value, electronic expansion valve events are being determined just Often, electric expansion valve does not break down.

In some embodiments of the present disclosure, the electric expansion valve method for diagnosing faults further include:

Determine at least one in predetermined time and predetermined temperature value.

In some embodiments of the present disclosure, the determining predetermined time includes:

It is held time according to refrigerant type and complete machine control model setting electric expansion valve initial opening；

It is held time according to electric expansion valve initial opening and determines corresponding procurement lead time；

It is held time according to electric expansion valve initial opening and determines the predetermined time with the difference of procurement lead time.

In some embodiments of the present disclosure, the determining predetermined temperature value includes:

Determine the corresponding evaporating temperature of low pressure minimum guard value；

Corresponding predetermined temperature difference is determined according to the corresponding evaporating temperature of low pressure minimum guard value；

Predetermined temperature is determined according to the difference of the corresponding evaporating temperature of low pressure minimum guard value and predetermined temperature difference Value.

According to another aspect of the present disclosure, a kind of electric expansion valve trouble-shooter is provided, comprising:

Temperature determination module in the case where reaching the predetermined time for the runing time after compressor start, obtains low The corresponding evaporating temperature of pressure pressure；

Comparison module, for the corresponding evaporating temperature of low pressure to be compared with predetermined temperature value；

Fault diagnosis module is sentenced for the comparison result according to low pressure corresponding evaporating temperature and predetermined temperature value Whether disconnected electric expansion valve breaks down.

In some embodiments of the present disclosure, the electric expansion valve trouble-shooter realizes such as above-mentioned for executing The operation of electric expansion valve method for diagnosing faults described in one embodiment.

According to another aspect of the present disclosure, a kind of electric expansion valve trouble-shooter is provided, comprising:

Memory, for storing instruction；

Processor is realized so that the electric expansion valve trouble-shooter executes as above-mentioned for executing described instruction The operation of electric expansion valve method for diagnosing faults described in any embodiment.

According to another aspect of the present disclosure, a kind of air-conditioning is provided, including the electronic expansion as described in above-mentioned any embodiment Valve trouble-shooter.

According to another aspect of the present disclosure, a kind of computer readable storage medium is provided, wherein described computer-readable to deposit Storage media is stored with computer instruction, realizes that the electronics as described in above-mentioned any embodiment is swollen when described instruction is executed by processor Swollen valve method for diagnosing faults.

The disclosure can judge electric expansion valve by the corresponding evaporating temperature of low pressure compared with predetermined temperature value Whether movement is normal, to realize the monitoring to unit component operating condition, guarantees unit operational excellence.

Detailed description of the invention

In order to illustrate more clearly of the embodiment of the present disclosure or technical solution in the prior art, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Disclosed some embodiments for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the schematic diagram of some embodiments of disclosure electric expansion valve method for diagnosing faults.

Fig. 2 is the schematic diagram of other embodiments of disclosure electric expansion valve method for diagnosing faults.

Fig. 3 is the schematic diagram of some embodiments of disclosure electric expansion valve trouble-shooter.

Fig. 4 is the schematic diagram of other embodiments of disclosure electric expansion valve trouble-shooter.

Fig. 5 is the schematic diagram of the other embodiment of disclosure electric expansion valve trouble-shooter.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is carried out clear, complete Site preparation description, it is clear that described embodiment is only disclosure a part of the embodiment, instead of all the embodiments.Below Description only actually at least one exemplary embodiment be it is illustrative, never as to the disclosure and its application or making Any restrictions.Based on the embodiment in the disclosure, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, belong to the disclosure protection range.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the present disclosure processed of formula and numerical value.

Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality Proportionate relationship draw.

Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as authorizing part of specification.

It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.

Fig. 1 is the schematic diagram of some embodiments of disclosure electric expansion valve method for diagnosing faults.Preferably, the present embodiment can It is executed by disclosure electric expansion valve trouble-shooter.Method includes the following steps:

Step 11, in the case that the runing time after compressor start reaches the predetermined time, it is corresponding to obtain low pressure Evaporating temperature.

In some embodiments of the present disclosure, low-pressure side refers to the area of low pressure of whole system, and low pressure is specially Unit parameter is the pressure of compressor air suction mouth.

In some embodiments of the present disclosure, in step 11, the step of the acquisition low pressure corresponding evaporating temperature It may include: to calculate the corresponding evaporating temperature of pressure of inspiration(Pi).

Step 12, the corresponding evaporating temperature of low pressure is compared with predetermined temperature value.

Step 13, according to the comparison result of low pressure corresponding evaporating temperature and predetermined temperature value, judge electronic expansion Whether valve breaks down.

In some embodiments of the present disclosure, step 13 may include:

Step 131, in the case where the corresponding evaporating temperature of low pressure is less than or equal to predetermined temperature value, determine that electronics is swollen Swollen valve events are abnormal, electric expansion valve breaks down.

Step 132, in the case where the corresponding evaporating temperature of low pressure is greater than predetermined temperature value, determine electric expansion valve Movement is normal, electric expansion valve does not break down.

It is a kind of wind based on big data based on disclosure electric expansion valve method for diagnosing faults provided by the above embodiment Cold screw water cooling machine set throttle valve method for diagnosing faults can pass through the corresponding evaporating temperature of low pressure and predetermined temperature value ratio Compared with judging whether the movement of electric expansion valve is normal, to realize to the prison of unit component (electric expansion valve) operating condition Control guarantees unit operational excellence.

Fig. 2 is the schematic diagram of other embodiments of disclosure electric expansion valve method for diagnosing faults.Preferably, the present embodiment It can be executed by disclosure electric expansion valve trouble-shooter.The step 21-23 of Fig. 2 embodiment step with Fig. 1 embodiment respectively Rapid 11-13 is same or like.

The electric expansion valve method for diagnosing faults of Fig. 2 embodiment may comprise steps of:

Step 20, at least one in predetermined time T1 and predetermined temperature value K1 is determined.

In some embodiments of the present disclosure, in step 20, the step of determining predetermined time T1, may include:

Step 201, it is held time T according to refrigerant type and complete machine control model setting electric expansion valve initial opening.

In some embodiments of the present disclosure, electric expansion valve initial opening holds time T can be for 10 minutes.

In some embodiments of the present disclosure, initial opening X without limitation, is set according to refrigerant type and complete machine control.

In some embodiments of the present disclosure, according to the control thinking of unit, in compressor booting controlled refrigeration matchmaker with Freezing oil condition influences, and electric expansion valve should be kept certain time interval T minute on an initial opening X, when electric expansion valve connects When line is bad or motor action is abnormal, electric expansion valve will be stuck in a lesser aperture, therefore be switched in compressor In the process, it will cause unit low pressure quickly to reduce, until protection.

In some embodiments of the present disclosure, initial opening X without limitation, can control mould according to refrigerant type and complete machine Formula setting.

Step 202, corresponding procurement lead time T2 is determined according to the electric expansion valve initial opening T that holds time.

In some embodiments of the present disclosure, electric expansion valve initial opening hold time T be 10 minutes in the case where, Pre-set time T2 can be 1 minute or 2 minutes.

Step 203, according to electric expansion valve initial opening hold time T and procurement lead time T2 difference determine it is predetermined Time T1, that is, T1=T-T2.

In some embodiments of the present disclosure, in step 20, the step of determining predetermined temperature value, may include:

Step 20a determines the corresponding evaporating temperature K of low pressure minimum guard value.

In some embodiments of the present disclosure, the value range of the corresponding evaporating temperature K of low pressure minimum guard value can Think (- 2,3) DEG C.

Step 20b determines corresponding predetermined temperature difference according to the corresponding evaporating temperature K of low pressure minimum guard value K2。

In some embodiments of the present disclosure, in the value range of the corresponding evaporating temperature K of low pressure minimum guard value In the case where can be for (- 2,3) DEG C, predetermined temperature difference K2 can be 1 DEG C or 2 DEG C.

Step 20c, the difference according to low pressure minimum guard value corresponding evaporating temperature K and predetermined temperature difference K are true Determine predetermined temperature value K1, that is, K1=K-K2.

Step 21, in the case that the runing time after compressor start reaches predetermined time T1, low pressure pair is obtained The evaporating temperature answered.

Step 22, the corresponding evaporating temperature of low pressure is compared with predetermined temperature value K1.

Step 23, according to the comparison result of low pressure corresponding evaporating temperature and predetermined temperature value K1, judge that electronics is swollen Whether swollen valve breaks down.

In some embodiments of the present disclosure, step 23 may include:

Step 231, in the case where the corresponding evaporating temperature of low pressure is less than or equal to predetermined temperature value K1, determine electronics Expansion valve remarkable action, electric expansion valve break down.

Step 232, in the case where the corresponding evaporating temperature of low pressure is greater than predetermined temperature value K1, determine electronic expansion Valve events are normal, electric expansion valve does not break down.

In some embodiments of the present disclosure, disclosure electric expansion valve method for diagnosing faults may include: that compressor opens The corresponding evaporating temperature of detection low pressure, time, electronic expansion valve opening after dynamic, runing time reaches after compressor start At T-1 minutes, the corresponding evaporating temperature of low pressure and (K-1) DEG C of size is judged；As evaporating temperature≤(K-1) DEG C, sentence Disconnected electric expansion valve remarkable action；As evaporating temperature > (K-1) DEG C, judge that electronic expansion valve events are normal.

It, can be based on big data analysis based on disclosure electric expansion valve method for diagnosing faults provided by the above embodiment Thinking analyzes the low pressure change curve in each compressor start T minutes, wherein when the compressor start time is more than T Afterwards, electric expansion valve will logically start to adjust.In T minutes, electric expansion valve initial opening is remained unchanged, low pressure pressure Power after compressor start with reducing.Disclosure above-described embodiment reaches low-voltage variation pressure when low pressure within (T-T2) minute When the corresponding evaporating temperature of power (K-K2) DEG C, electric expansion valve remarkable action is judged, Ying Tongzhi team after sale goes investigation electronics swollen Swollen valve wiring and pipe-line system impurity.

Disclosure above-described embodiment can detect the variation tendency of data unit operation by big data, compare history number According to providing a kind of big data failure analysis methods of electric expansion valve remarkable action, it can be determined that electronic expansion valve events are It is no normal, to realize the monitoring to unit component operating condition, it ensure that unit operational excellence.

Fig. 3 is the schematic diagram of some embodiments of disclosure electric expansion valve trouble-shooter.As shown in figure 3, the disclosure Electric expansion valve trouble-shooter may include temperature determination module 31, comparison module 32 and fault diagnosis module 33, in which:

Temperature determination module 31 in the case where reaching the predetermined time for the runing time after compressor start, obtains The corresponding evaporating temperature of low pressure.

In some embodiments of the present disclosure, low-pressure side refers to the area of low pressure of whole system, and low pressure is specially Unit parameter is the pressure of compressor air suction mouth.

In some embodiments of the present disclosure, temperature determination module 31 can be used for calculating the corresponding evaporation temperature of pressure of inspiration(Pi) Degree.

Comparison module 32, for the corresponding evaporating temperature of low pressure to be compared with predetermined temperature value.

Fault diagnosis module 33, for the comparison result according to low pressure corresponding evaporating temperature and predetermined temperature value, Judge whether electric expansion valve breaks down.

In some embodiments of the present disclosure, fault diagnosis module 33 can be used for evaporating temperature corresponding in low pressure In the case where predetermined temperature value, determine that electric expansion valve remarkable action, electric expansion valve break down；In low pressure pressure In the case that the corresponding evaporating temperature of power is greater than predetermined temperature value, judgement electronic expansion valve events are normal, electric expansion valve is not sent out Raw failure.

In some embodiments of the present disclosure, the electric expansion valve trouble-shooter realizes such as above-mentioned for executing The operation of electric expansion valve method for diagnosing faults described in one embodiment (such as Fig. 1 or Fig. 2 embodiment).

It is a kind of wind based on big data based on disclosure electric expansion valve trouble-shooter provided by the above embodiment Cold screw water cooling machine set throttle valve trouble-shooter can pass through the corresponding evaporating temperature of low pressure and predetermined temperature value ratio Compared with, judge whether the movement of electric expansion valve is normal, thus realize the monitoring to unit component operating condition, guarantee unit fortune Row is good.

Fig. 4 is the schematic diagram of other embodiments of disclosure electric expansion valve trouble-shooter.With Fig. 3 embodiment phase Than in Fig. 4 embodiment, disclosure electric expansion valve trouble-shooter can also include parameter determination module 30, in which:

Parameter determination module 30, for determining at least one in predetermined time T1 and predetermined temperature value K1.

In some embodiments of the present disclosure, parameter determination module 30 can be used for according to refrigerant type and complete machine control mould Formula setting electric expansion valve initial opening is held time T；According to electric expansion valve initial opening hold time T determine it is corresponding pre- Determine pre-set time T2；It is held time according to electric expansion valve initial opening and determines predetermined time root with the difference of procurement lead time Predetermined time T1 is determined according to the hold time difference of T and procurement lead time T2 of electric expansion valve initial opening, that is, T1=T- T2。

In some embodiments of the present disclosure, electric expansion valve initial opening holds time T can be for 10 minutes.

In some embodiments of the present disclosure, electric expansion valve initial opening hold time T be 10 minutes in the case where, Pre-set time T2 can be 1 minute or 2 minutes.

In some embodiments of the present disclosure, parameter determination module 30 is determined for low pressure minimum guard value pair The evaporating temperature K answered；Corresponding predetermined temperature difference K2 is determined according to the corresponding evaporating temperature K of low pressure minimum guard value； Predetermined temperature value K1 is determined according to the difference of low pressure minimum guard value corresponding evaporating temperature K and predetermined temperature difference K, That is, K1=K-K2.

In some embodiments of the present disclosure, the value range of the corresponding evaporating temperature K of low pressure minimum guard value can Think (- 2,3) DEG C.

In some embodiments of the present disclosure, in the value range of the corresponding evaporating temperature K of low pressure minimum guard value In the case where can be for (- 2,3) DEG C, predetermined temperature difference K2 can be 1 DEG C or 2 DEG C.

In some embodiments of the present disclosure, disclosure electric expansion valve trouble-shooter can be used for opening in compressor The corresponding evaporating temperature of detection low pressure, time, electronic expansion valve opening after dynamic, runing time reaches after compressor start At T-1 minutes, the corresponding evaporating temperature of low pressure and (K-1) DEG C of size is judged；As evaporating temperature≤(K-1) DEG C, sentence Disconnected electric expansion valve remarkable action；As evaporating temperature > (K-1) DEG C, judge that electronic expansion valve events are normal.

The disclosure can be regarded as above mentioned embodiment provide a kind of trouble-shooter based on big data and utilize big number According to the thinking and logic of study Artificial Diagnosis, automated diagnostic is carried out, result is provided.

In disclosure above-described embodiment, time T is that electric expansion valve initial opening is held time, the electronics after T time Expansion valve opening is by state modulators such as the degrees of superheat.According to big data analysis experience, (i.e. remarkable action) that electric expansion valve blocks Data rule, which is substantially before failure, shows the characteristics of low pressure declines always.Disclosure above-described embodiment works as unit starting Afterwards, when initial opening holds time T previous minute, judged, when low pressure corresponds to the ratio of evaporating temperature data reduction At also low 1 DEG C of K DEG C of low pressure minimum guard value, i.e., predictable unit will break down, and failure cause is electronic expansion valve actuation Make abnormal.

Disclosure above-described embodiment can detect the variation tendency of data unit operation by big data, compare history number According to providing a kind of big data fail analysis device of electric expansion valve remarkable action, it can be determined that electronic expansion valve events are It is no normal, to realize the monitoring to unit component operating condition, it ensure that unit operational excellence.

Fig. 5 is the schematic diagram of the other embodiment of disclosure electric expansion valve trouble-shooter.As shown in figure 5, this public affairs Opening electric expansion valve trouble-shooter may include temperature determination module 31, comparison module 32 and fault diagnosis module 33, In:

Memory 51, for storing instruction.

Processor 52 is realized as above for executing described instruction so that the electric expansion valve trouble-shooter executes State the operation of electric expansion valve method for diagnosing faults described in any embodiment (such as Fig. 1 or Fig. 2 embodiment).

It, can be based on big data analysis based on disclosure electric expansion valve trouble-shooter provided by the above embodiment Thinking analyzes the low pressure change curve in each compressor start T minutes, wherein when the compressor start time is more than T Afterwards, electric expansion valve will logically start to adjust.In T minutes, electric expansion valve initial opening is remained unchanged, low pressure pressure Power after compressor start with reducing.Disclosure above-described embodiment reaches low-voltage variation pressure when low pressure within (T-T2) minute When the corresponding evaporating temperature of power (K-K2) DEG C, electric expansion valve remarkable action is judged, Ying Tongzhi team after sale goes investigation electronics swollen Swollen valve wiring and pipe-line system impurity.

According to another aspect of the present disclosure, a kind of air-conditioning is provided, including as (such as Fig. 3-Fig. 5 appoints above-mentioned any embodiment One embodiment) described in electric expansion valve trouble-shooter.

In some embodiments of the present disclosure, air-conditioning can be air-cooled screw unit.

Based on the disclosure is provided by the above embodiment can be every second compression can be analyzed based on the thinking of big data analysis Machine starts the low pressure change curve in T minutes, wherein after the compressor start time being more than T, electric expansion valve will be by Start to adjust according to logic.In T minutes, electric expansion valve initial opening is remained unchanged, and low pressure after compressor start with dropping It is low.Disclosure above-described embodiment reaches the corresponding evaporating temperature of low-voltage variation pressure when low pressure within (T-T2) minute (K-K2) DEG C when, judge electric expansion valve remarkable action, Ying Tongzhi team after sale goes to investigation electric expansion valve wiring and pipeline system System impurity.

According to another aspect of the present disclosure, a kind of computer readable storage medium is provided, wherein described computer-readable to deposit Storage media is stored with computer instruction, is realized when described instruction is executed by processor such as above-mentioned any embodiment (such as Fig. 1 or figure 2 embodiments) described in electric expansion valve method for diagnosing faults.

Based on disclosure computer readable storage medium provided by the above embodiment, the corresponding steaming of low pressure can be passed through Temperature is sent out compared with predetermined temperature value, judges whether the movement of electric expansion valve is normal, unit component is run to realize The monitoring of situation guarantees unit operational excellence.

Electric expansion valve trouble-shooter described above can be implemented as executing function described herein Can general processor, programmable logic controller (PLC) (PLC), digital signal processor (DSP), specific integrated circuit (ASIC), Field programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hard Part component or it is any appropriately combined.

So far, the disclosure is described in detail.In order to avoid covering the design of the disclosure, it is public that this field institute is not described The some details known.Those skilled in the art as described above, completely it can be appreciated how implementing technology disclosed herein Scheme.

Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, can also indicate that relevant hardware is completed by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..

The description of the disclosure is given for the purpose of illustration and description, and is not exhaustively or by the disclosure It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches Embodiment is stated and be the principle and practical application in order to more preferably illustrate the disclosure, and those skilled in the art is enable to manage The solution disclosure is to design various embodiments suitable for specific applications with various modifications.