CN110006150A - The method, apparatus of the outdoor fan fault detection of air-conditioning, air-conditioning - Google Patents
The method, apparatus of the outdoor fan fault detection of air-conditioning, air-conditioning Download PDFInfo
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- CN110006150A CN110006150A CN201910228310.1A CN201910228310A CN110006150A CN 110006150 A CN110006150 A CN 110006150A CN 201910228310 A CN201910228310 A CN 201910228310A CN 110006150 A CN110006150 A CN 110006150A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 250
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000002159 abnormal effect Effects 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000523 sample Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
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- 230000002547 anomalous effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of method, apparatus of the outdoor fan fault detection of air-conditioning, air-conditioning, belong to air-conditioning technical field.The described method includes: obtaining the first high pressure end pressure and the first operation total current of air-conditioning after the compressor of air-conditioning reaches setting speed；According to the first high pressure end pressure and the first operation total current, the fault condition of outdoor fan is judged.Additionally provide device, the air-conditioning of a kind of outdoor fan fault detection of air-conditioning.Beneficial effects of the present invention: high pressure end pressure and operation two parameter states of total current by monitoring air-conditioning, judge the fault condition of outdoor fan, without outer sensor, it can quickly position and accurately lock outdoor fan abnormal failure, guarantee the normal operation of air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical field, the method, apparatus of the outdoor fan fault detection of specifically a kind of air-conditioning, sky
It adjusts.
Background technique
The important component that air-conditioning draught fan exchanges heat as air-conditioning has evaporation, the condensation of liquid in air-conditioning system important
It influences.The outdoor fan of air-conditioning can not be judged the operating status of outdoor fan by velocity feedback, work as room without feedback speed signal
It, can not quick positioning failure, the easily refrigeration or heating of influence air-conditioning system when the failure exceptions such as stall, damage occur for outer blower
Effect.Currently, detecting the revolving speed of outdoor fan by way of speed probe external on outdoor fan, and then judge room
The operating status of outer blower, still, in view of the special construction of air-conditioner outdoor unit, speed probe is easy water inlet failure, leads to benefit
The fault condition of outdoor fan is unable to judge accurately with speed probe.
Summary of the invention
The embodiment of the invention provides a kind of method, apparatus of the outdoor fan fault detection of air-conditioning, air-conditioning, it is intended to solve
Since speed probe is easy water inlet failure, the technology of the fault condition of outdoor fan is unable to judge accurately using speed probe
Problem.In order to which some aspects of the embodiment to disclosure have a basic understanding, simple summary is shown below.The summary
Part is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments.It is only
One purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
According to embodiments of the present invention, method, apparatus, the air-conditioning of a kind of outdoor fan fault detection of air-conditioning are provided, is led to
The high pressure end pressure and operation two parameter states of total current for crossing monitoring air-conditioning, judge the fault condition of outdoor fan, without outer
Sensor is set, outdoor fan abnormal failure can be quickly positioned and accurately lock.
According to a first aspect of the embodiments of the present invention, a kind of method of the outdoor fan fault detection of air-conditioning, institute are provided
The method of stating includes:
After the compressor of air-conditioning reaches setting speed, the first high pressure end pressure and the total electricity of the first operation of air-conditioning are obtained
Stream；
According to the first high pressure end pressure and the first operation total current, the fault condition of outdoor fan is judged.
In some optional embodiments, according to the first high pressure end pressure and the first operation total current, judge outdoor fan
Fault condition specifically includes:
Work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I, determine that outdoor fan breaks down；Otherwise, it is determined that outdoor fan is not sent out
Raw failure；
Wherein, Pd1For the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I
For the total current that air-conditioning operates normally, i is the consumption electric current that outdoor fan operates normally, IsFor the total electricity of the first operation of air-conditioning
Stream.
In some optional embodiments, after determining that outdoor fan breaks down, further includes:
Judge I-i≤IsWhether < I is true；
As I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for outdoor fan；
As I-i≤IsWhen < I is invalid, determine that stall failure occurs for outdoor fan.
In some optional embodiments, air-conditioning further include:
High-voltage end pressure sensor, for detecting the high pressure end pressure of air-conditioning；
Low-pressure end pressure sensor, for detecting the low pressure end pressure of air-conditioning；
Method further include:
Judge whether air-conditioning is in disorderly closedown state；
After the first preset time for receiving the judgement result that air-conditioning is in disorderly closedown state, obtain air-conditioning second is high
Pressure side pressure and the second low pressure end pressure；
According to second high-pressure side pressure and the second low pressure end pressure, judge that high-voltage end pressure sensor and low pressure end pressure pass
The fault condition of sensor.
In some optional embodiments, according to second high-pressure side pressure and the second low pressure end pressure, judge high pressure end pressure
The fault condition of sensor and low-pressure end pressure sensor, specifically includes:
Judge Ps2≤Pd2≤Ps2Whether+Δ P is true；
Work as Ps2≤Pd2≤Ps2When+Δ P is set up, determine that high-voltage end pressure sensor and low-pressure end pressure sensor do not occur
Failure；
Work as Ps2≤Pd2≤Ps2When+Δ P is invalid, determine that high-voltage end pressure sensor and low-pressure end pressure sensor occur
Failure；
Wherein, Pd2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Second high-pressure side pressure, Ps2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
The second low pressure end pressure, Δ P be preset pressure difference value.
In some optional embodiments, method further include:
Obtain the times N that outdoor fan breaks down in the second preset time；
Judge N >=N0It is whether true；
As N >=N0When establishment, the fault locking of air-conditioning is carried out, stops outdoor fan fault detection；
As N >=N0When invalid, continue outdoor fan fault detection；
Wherein, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is outdoor fan second
The preset number of stoppages in preset time.
According to a second aspect of the embodiments of the present invention, a kind of device of the outdoor fan fault detection of air-conditioning is provided, is wrapped
It includes:
First acquisition unit, for after the compressor of air-conditioning reaches setting speed, obtaining the first high pressure side pressure of air-conditioning
Power and the first operation total current；
First judging unit, for judging the event of outdoor fan according to the first high pressure end pressure and the first operation total current
Hinder situation.
In some optional embodiments, the first judging unit is specifically used for:
Work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I, determine that outdoor fan breaks down；Otherwise, it is determined that outdoor fan is not sent out
Raw failure；
Wherein, Pd1For the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I
For the total current that air-conditioning operates normally, i is the consumption electric current that outdoor fan operates normally, IsFor the total electricity of the first operation of air-conditioning
Stream.
In some optional embodiments, the first judging unit is also used to:
Judge I-i≤IsWhether < I is true；
As I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for outdoor fan；
As I-i≤IsWhen < I is invalid, determine that stall failure occurs for outdoor fan.
In some optional embodiments, air-conditioning further include:
High-voltage end pressure sensor, for detecting the high pressure end pressure of air-conditioning；
Low-pressure end pressure sensor, for detecting the low pressure end pressure of air-conditioning；
Device further include:
Second judgment unit, for judging whether air-conditioning is in disorderly closedown state；
Second acquisition unit, the first preset time for being in the judgement result of disorderly closedown state for receiving air-conditioning
Afterwards, the second high-pressure side pressure and the second low pressure end pressure of air-conditioning are obtained；
Third judging unit, for judging that high pressure end pressure is passed according to second high-pressure side pressure and the second low pressure end pressure
The fault condition of sensor and low-pressure end pressure sensor.
In some optional embodiments, third judging unit is specifically used for:
Judge Ps2≤Pd2≤Ps2Whether+Δ P is true；
Work as Ps2≤Pd2≤Ps2When+Δ P is set up, determine that high-voltage end pressure sensor and low-pressure end pressure sensor do not occur
Failure；
Work as Ps2≤Pd2≤Ps2When+Δ P is invalid, determine that high-voltage end pressure sensor and low-pressure end pressure sensor occur
Failure；
Wherein, Pd2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Second high-pressure side pressure, Ps2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
The second low pressure end pressure, Δ P be preset pressure difference value.
In some optional embodiments, device further include:
Third acquiring unit, the times N to break down in the second preset time for obtaining outdoor fan；
4th judging unit, for judging N >=N0It is whether true；
Control unit is used for:
As N >=N0When establishment, the fault locking of air-conditioning is carried out, stops outdoor fan fault detection；
As N >=N0When invalid, continue outdoor fan fault detection；
Wherein, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is outdoor fan second
The preset number of stoppages in preset time.
According to a third aspect of the embodiments of the present invention, a kind of air-conditioning is provided, air-conditioning includes such as the of the embodiment of the present invention
The device of the outdoor fan fault detection of air-conditioning described in two aspects.
Technical solution provided in an embodiment of the present invention can include the following benefits:
By monitoring the high pressure end pressure and operation two parameter states of total current of air-conditioning, the failure feelings of outdoor fan are judged
Condition is not necessarily to outer sensor, can quickly position and accurately lock outdoor fan abnormal failure, guarantee the normal operation of air-conditioning.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is that a kind of process of the method for the outdoor fan fault detection of air-conditioning shown according to an exemplary embodiment is shown
It is intended to；
Fig. 2 is a kind of process of the method for the outdoor fan fault detection of the air-conditioning shown according to a further exemplary embodiment
Schematic diagram；
Fig. 3 is a kind of process of the method for the outdoor fan fault detection of the air-conditioning shown according to a further exemplary embodiment
Schematic diagram；
Fig. 4 is the process signal of the method for the fault condition of judgement outdoor fan shown according to an exemplary embodiment
Figure；
Fig. 5 is that a kind of structure of the device of the outdoor fan fault detection of air-conditioning shown according to an exemplary embodiment is shown
It is intended to；
Fig. 6 is a kind of structure of the device of the outdoor fan fault detection of the air-conditioning shown according to a further exemplary embodiment
Schematic diagram.
Description of symbols:
11- first acquisition unit；12- second acquisition unit；13- third acquiring unit；The first judging unit of 21-；22-
Two judging units；23- third judging unit；The 4th judging unit of 24-；30- control unit.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Embodiment only represents possible variation, and unless explicitly requested, otherwise individual components and functionality is optional, and
And the sequence of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The range of embodiment of the present invention includes the entire scope of claims and the institute of claims
There is obtainable equivalent.Herein, each embodiment can individually or generally be indicated that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the range of the application
For any single invention or inventive concept.Herein, relational terms such as first and second and the like are used only for one
Entity, which is perhaps operated, to be distinguished and exists without requiring or implying between these entities or operation with another entity or operation
Any actual relationship or sequence.
Each embodiment herein is described in a progressive manner, and the highlights of each of the examples are implement with other
The difference of example, the same or similar parts in each embodiment may refer to each other.
Fig. 1-Fig. 3 is the process signal of the method for the outdoor fan fault detection of the air-conditioning shown accoding to exemplary embodiment
Figure；The flow diagram of the method for the fault condition of outdoor fan that Fig. 4 is that is shown accoding to exemplary embodiment judge；Fig. 5-figure
6 be the structural schematic diagram of the device of the outdoor fan fault detection of the air-conditioning shown accoding to exemplary embodiment.
The method of the outdoor fan fault detection of the air-conditioning of this paper, the outdoor AC blower fan applied to air-conditioning.
In some optional embodiments, as shown in Figure 1, providing a kind of method of the outdoor fan fault detection of air-conditioning,
Specifically includes the following steps:
S101: after the compressor of air-conditioning reaches setting speed, the first high pressure end pressure and the first operation of air-conditioning are obtained
Total current.
Here, the first high pressure end pressure of air-conditioning is that the compressor of air-conditioning reaches the real-time high pressure of air-conditioning after setting speed
Lateral pressure, for example, the pressure of the outlet side of compressor；First operation total current is after the compressor of air-conditioning reaches setting speed
Total current on outdoor unit circuit；Setting speed is the revolving speed of the compressor of preset air-conditioning.It is set when the compressor of air-conditioning reaches
When determining revolving speed, the first high pressure end pressure of air-conditioning at this time and the first operation total current are obtained, judges the fault condition of outdoor fan.
S102: according to the first high pressure end pressure and the first operation total current, judge the fault condition of outdoor fan.
For the air-conditioning of normal operation, for outdoor fan when running well, air-conditioning carries out normal return air and outlet air,
Air-conditioning high pressure end pressure normal fluctuation in a certain range；When outdoor fan stall or damage are shut down, air-conditioning can not be carried out
Normal return air and outlet air, the high pressure end pressure of air-conditioning can significantly rise.Therefore, the first high pressure when operation of air conditioner can be passed through
Whether end pressure increases extremely to judge whether outdoor fan works normally.
In addition, needing to consume certain electric energy, the fortune on air-conditioning main power circuit when the outdoor fan of air-conditioning runs well
Row total current includes the consumption electric current of outdoor fan；When outdoor fan breaks down it is abnormal when, the consumption electric current meeting of outdoor fan
It is abnormal to reduce or increase.Therefore, first when can be by operation of air conditioner runs the anomalous variation of total current to judge outdoor wind
Machine works normally.
The first high pressure end pressure or the first operation total current when operation of air conditioner also will receive the influence of other factors and send out
Raw to change, for example, condenser fins block, the first high pressure end pressure that will cause air-conditioning rises, and family's voltage increases, and can make
It is increased at the first operation total current of air-conditioning.Therefore, herein, the first high pressure end pressure when comprehensive operation of air conditioner and the first fortune
Two parameter states of row total current judge the fault condition of outdoor fan jointly, can reduce other uncertain factors for room
The interference of the breakdown judge result of outer blower improves the accuracy of outdoor fan breakdown judge.
In this way, judging outdoor fan by the high pressure end pressure and operation two parameter states of total current of monitoring air-conditioning
Fault condition can be positioned quickly and accurately lock outdoor fan abnormal failure, guarantee the normal operation of air-conditioning；Meanwhile without outer
Sensor is set, the cost of detection of air-conditioning outdoor fan failure can be substantially reduced, and then reduce the production cost of air-conditioning, economy effect
It is beneficial high.
In some specific executive modes, as shown in figure 4, step S102 is specifically included:
S102a: judge Pd1>Pdmax, Is>=I-i and IsWhether ≠ I is true.
Wherein, Pd1For the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I
For the total current that air-conditioning operates normally, i is the consumption electric current that outdoor fan operates normally, IsFor the total electricity of the first operation of air-conditioning
Stream.
S102b: work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I is invalid, determine that outdoor fan does not break down.
Wherein, Pd1>Pdmax, Is>=I-i and Is≠ I is invalid, and there are following several situations:
The first: Pd1≤Pdmax；
Second: Pd1>Pdmax, Is<I-i；
The third: Pd1>Pdmax, Is=I.
First high pressure end pressure of air-conditioning is not more than the high-voltage end upper pressure limit value that air-conditioning operates normally, alternatively, air-conditioning
First operation total current is less than the difference of the total current that air-conditioning operates normally and the consumption electric current that outdoor fan operates normally, air-conditioning
The first operation total current be equal to the total current that air-conditioning operates normally, these three situations are not admitted to what outdoor motor broke down
Situation, therefore, it is determined that outdoor fan does not break down.
S102c: work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I is set up, I-i≤I is judgedsWhether < I is true.
When the first high pressure end pressure of air-conditioning and first operation two parameter states of total current of air-conditioning meet outdoor fan
When breaking down when the parameter state of air-conditioning, determine that outdoor fan breaks down, and further total using the first operation of air-conditioning
The parameter state of electric current identifies the fault type of outdoor fan.
S102d: as I-i≤IsWhen < I is invalid, determine that stall failure occurs for outdoor fan.
Here, as I-i≤IsWhen < I is invalid, also that is, Pd1>Pdmax, Is> I, at this point, the first high pressure end pressure of air-conditioning is big
It is greater than total electricity that air-conditioning operates normally in the first operation total current of the high-voltage end upper pressure limit value that air-conditioning operates normally, air-conditioning
Stream, system can not normal return air and outlet air, the consumption electric current of outdoor fan is greater than its normal consumption electric current, short circuit occurs, show
Stall failure occurs for outdoor fan.
S102e: as I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for outdoor fan.
Here, as I-i≤IsWhen < I is set up, show Pd1>Pdmax, I-i≤Is< I, at this point, the first high pressure end pressure of air-conditioning
Greater than the high-voltage end upper pressure limit value that air-conditioning operates normally, the first operation total current of air-conditioning is located at total electricity of air-conditioning normal operation
Between the total current that the difference and air-conditioning for the consumption electric current that stream and outdoor fan operate normally operate normally, system can not be returned normally
The consumption electric current of wind and outlet air, outdoor fan is less than its normal consumption electric current, shows that revolving speed abnormal failure occurs for outdoor fan.
In this way, run total current using the first of air-conditioning, can further accurate judgement outdoor fan fault type, side
Just maintenance personal further checks, and improves repair quality.
In some optional embodiments, as shown in Fig. 2, providing a kind of method of the outdoor fan fault detection of air-conditioning,
Specifically includes the following steps:
S201: judge whether air-conditioning is in disorderly closedown state.
When outdoor fan breaks down, air-conditioning carries out disorderly closedown.Here it is possible to pass through the compressor for judging air-conditioning
Revolving speed judges whether air-conditioning is in disorderly closedown state, for example, determining that air-conditioning is in failure when the revolving speed of compressor is 0
State.
S202: after the first preset time for receiving the judgement result that air-conditioning is in disorderly closedown state, air-conditioning is obtained
Second high-pressure side pressure and the second low pressure end pressure.
Here, the second high-pressure side pressure of air-conditioning is receive the judgement result that air-conditioning is in disorderly closedown state first
The high side pressure of air-conditioning after preset time, for example, the pressure of the outlet side of compressor；Second low pressure end pressure of air-conditioning is
The real-time low-pressure lateral pressure of air-conditioning after receiving the first preset time of the judgement result that air-conditioning is in disorderly closedown state, than
Such as, the pressure of the air return end of compressor；The high side pressure and low-pressure lateral pressure that first preset time is air-conditioning are from working condition
It adjusts to the time of off working state.After air-conditioning the first preset time of disorderly closedown, shows that air-conditioning is in off working state, obtain
The second high-pressure side pressure and the second low pressure end pressure for taking air-conditioning at this time judge that high-voltage end pressure sensor and low pressure end pressure pass
The fault condition of sensor.
S203: according to second high-pressure side pressure and the second low pressure end pressure, judge high-voltage end pressure sensor and low-pressure end
The fault condition of pressure sensor.
Here, the high-voltage end pressure sensor of air-conditioning is used to detect the high pressure end pressure of air-conditioning；The low pressure end pressure of air-conditioning
Sensor is used to detect the low pressure end pressure of air-conditioning.When air-conditioning is in off working state, second high-pressure side pressure and second low
Pressure side pressure reaches unanimity, and can judge high pressure side pressure by the way that whether second high-pressure side pressure and the second low pressure end pressure are consistent
The fault condition of force snesor and low-pressure end pressure sensor leads to outdoor to avoid the failure due to high-voltage end pressure sensor
The malfunction of blower judges incorrectly.
S204: after the compressor of air-conditioning reaches setting speed, the first high pressure end pressure and the first operation of air-conditioning are obtained
Total current.
S205: according to the first high pressure end pressure and the first operation total current, judge the fault condition of outdoor fan.
In this way, the fault detection of high-voltage end pressure sensor is carried out in advance before carrying out fault detection to outdoor fan,
The erroneous judgement that the fault detection of outdoor fan is caused to exclude high-voltage end pressure sensor there are failure, can be improved the room of air-conditioning
The accuracy of outer blower fault detection.
In some optional embodiments, as shown in figure 3, the method for the outdoor fan fault detection of air-conditioning specifically include it is following
Step:
S301: after the first preset time for receiving the judgement result that air-conditioning is in disorderly closedown state, air-conditioning is obtained
Second high-pressure side pressure Pd2With the second low pressure end pressure Ps。
S302: judge Ps2≤Pd2≤Ps2Whether+Δ P is true.
Here, Pd2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Second high-pressure side pressure, Ps2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
The second low pressure end pressure, Δ P be preset pressure difference value.After the first preset time of air-conditioning disorderly closedown, the high-voltage end of air-conditioning
May still there be pressure difference between pressure and low pressure end pressure, by the second high-pressure side pressure and the second low pressure that judge air-conditioning
Pressure difference between end pressure judges high-voltage end pressure sensor and low pressure end pressure whether within the scope of preset pressure difference value
The fault condition of sensor, there are tolerances for this judgement operation, and high-voltage end pressure sensor is being avoided to cause outdoor there are failure
In the case where the erroneous judgement of the fault detection of blower, it is ensured that outdoor fan fault detection is gone on smoothly.
Optionally, Δ P can be calculated according to the following formula:
Δ P=(Pd1-Ps1)-Pv*t
Wherein, Δ P is preset pressure difference value, Pd1For the first high pressure end pressure, Ps1For the first low pressure end pressure, PvIt is pre-
If air-conditioning disorderly closedown after air-conditioning high-pressure side and low-pressure side between pressure difference value rate of pressure reduction, t be first it is default when
Between.Here, Δ P >=0.
In this way, the value of Δ P is more flexible, accurate.
S303: work as Ps2≤Pd2≤Ps2When+Δ P is set up, high-voltage end pressure sensor and low-pressure end pressure sensor are determined not
It breaks down.
Here, work as Ps2≤Pd2≤Ps2When+Δ P is set up, between the second high-pressure side pressure of air-conditioning and the second low pressure end pressure
Pressure difference within the scope of preset pressure difference value, show high-voltage end pressure sensor and low-pressure end pressure sensor do not occur therefore
Barrier.
S304: work as Ps2≤Pd2≤Ps2When+Δ P is invalid, high-voltage end pressure sensor and low-pressure end pressure sensor are determined
It breaks down.
Here, work as Ps2≤Pd2≤Ps2When+Δ P is invalid, the second high-pressure side pressure of air-conditioning and the second low pressure end pressure it
Between pressure difference not within the scope of preset pressure difference value, show that high-voltage end pressure sensor and low-pressure end pressure sensor occur
Failure.
S305: after the compressor of air-conditioning reaches setting speed, the first high pressure end pressure P of air-conditioning is obtainedd1With the first fortune
Row total current I.
S306: judge Pd1>Pdmax, Is>=I-i and IsWhether ≠ I is true.
S307: work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I is invalid, determine that outdoor fan does not break down.
S308: work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I is set up, determine that outdoor fan breaks down, into air-conditioning failure
It shuts down.
S309: the times N that outdoor fan breaks down in the second preset time is obtained.
S310: judge N >=N0It is whether true.
Here, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is outdoor fan second
The preset number of stoppages in preset time.
S311: as N >=N0When invalid, continue outdoor fan fault detection.
Here, as N >=N0When invalid, the number that outdoor fan actually occurs failure in the second preset time is not up to
Outdoor fan preset number of stoppages in the second preset time, removes outdoor fan failure, and air-conditioning is reworked, continued
The fault detection of outdoor fan.
S312: as N >=N0When establishment, the fault locking of air-conditioning is carried out, stops outdoor fan fault detection.
Here, as N >=N0When establishment, the number that outdoor fan actually occurs failure in the second preset time is greater than outdoor
Blower preset number of stoppages in the second preset time, shows that air-conditioning breaks down, and carries out the fault locking of air-conditioning, stops room
The fault detection of outer blower avoids air-conditioning from restarting under nonserviceabling and damages to air-conditioning bring, guarantees the safe operation of air-conditioning.
After outdoor fan breaks down, carries out air-conditioning and shut down reparation, after the completion of outdoor fan is repaired, air-conditioning restarts just
Often operation.If, according to the first high pressure end pressure and the first operation total current, frequently detecting outdoor in the second preset time
Fan trouble (for example detecting outdoor fan failure three times in a hour) shows that air-conditioning breaks down, may be due to air-conditioning
Other component break down caused by (such as compressor overload operation), therefore, according to outdoor fan when second is default
The interior number to break down, carries out the fault locking of the air-conditioning, is restarted under nonserviceabling to avoid air-conditioning to air-conditioning band
It damages, guarantees the safe operation of air-conditioning.During outdoor fan carries out fault detection, the parallel event for carrying out air-conditioning entirety
Barrier detection is restarted under can nonserviceabling to avoid air-conditioning and is damaged to air-conditioning bring to carry out the fault locking of air-conditioning, extends
The service life of air-conditioning.
In this way, judging outdoor fan by the high pressure end pressure and operation two parameter states of total current of monitoring air-conditioning
Fault condition can be positioned quickly and accurately lock outdoor fan abnormal failure, guarantee the normal operation of air-conditioning, meanwhile, according to event
Hinder the number occurred, carry out the automatic protection of air-conditioning, avoids air-conditioning from restarting under nonserviceabling and air-conditioning bring is damaged, guarantee
The safe operation of air-conditioning.
In some optional embodiments, as shown in figure 5, providing a kind of device of the outdoor fan fault detection of air-conditioning,
Include:
First acquisition unit 11, for after the compressor of air-conditioning reaches setting speed, obtaining the first high-voltage end of air-conditioning
Pressure and the first operation total current；
First judging unit 21, for judging outdoor fan according to the first high pressure end pressure and the first operation total current
Fault condition.
In some optional embodiments, the first judging unit 21 is specifically used for:
Work as Pd>Pdmax, Is>=I-i and IsWhen ≠ I, determine that outdoor fan breaks down；Otherwise, it is determined that outdoor fan is not sent out
Raw failure；
Wherein, PdFor the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I is
The total current that air-conditioning operates normally, i are the consumption electric current that outdoor fan operates normally, IsFirst for air-conditioning runs total current.
Optionally, the first judging unit 21 is also used to:
Work as Pd1>Pdmax, Is>=I-i and IsWhen ≠ I is set up, I-i≤I is judgedsWhether < I is true；
As I-i≤IsWhen < I is invalid, determine that stall failure occurs for outdoor fan.
As I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for outdoor fan.
In some optional embodiments, as shown in fig. 6, providing a kind of device of the outdoor fan fault detection of air-conditioning,
Include:
Second judgment unit 22, for judging whether air-conditioning is in disorderly closedown state；
Second acquisition unit 12, the first preset time for being in the judgement result of disorderly closedown state for receiving air-conditioning
Afterwards, the second high-pressure side pressure and the second low pressure end pressure of air-conditioning are obtained；
Third judging unit 23, for judging high pressure end pressure according to second high-pressure side pressure and the second low pressure end pressure
The fault condition of sensor and low-pressure end pressure sensor；
First acquisition unit 11, for after the compressor of air-conditioning reaches setting speed, obtaining the first high-voltage end of air-conditioning
Pressure and the first operation total current；
First judging unit 21, for judging outdoor fan according to the first high pressure end pressure and the first operation total current
Fault condition；
Third acquiring unit 13, the times N to break down in the second preset time for obtaining outdoor fan；
4th judging unit 24, for judging N >=N0It is whether true；
Control unit 30, is used for:
As N >=N0When establishment, the fault locking of air-conditioning is carried out, stops outdoor fan fault detection；
As N >=N0When invalid, continue outdoor fan fault detection；
Wherein, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is outdoor fan second
The preset number of stoppages in preset time.
In some optional embodiments, second judgment unit 22 is specifically used for:
Judge Ps2≤Pd2≤Ps2Whether+Δ P is true；
Work as Ps2≤Pd2≤Ps2When+Δ P is set up, determine that high-voltage end pressure sensor and low-pressure end pressure sensor do not occur
Failure；
Work as Ps2≤Pd2≤Ps2When+Δ P is invalid, determine that high-voltage end pressure sensor and low-pressure end pressure sensor occur
Failure；
Wherein, Pd2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Second high-pressure side pressure, Ps2The air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
The second low pressure end pressure, Δ P be preset pressure difference value.
Optionally, Δ P can be calculated according to the following formula:
Δ P=(Pd1-Ps1)-Pv*t
Wherein, Δ P is preset pressure difference value, Pd1For the first high pressure end pressure, Ps1For the first low pressure end pressure, PvIt is pre-
If air-conditioning disorderly closedown after air-conditioning high-pressure side and low-pressure side between pressure difference value rate of pressure reduction, t be first it is default when
Between.Here, Δ P >=0.
In some optional embodiments, a kind of air-conditioning is provided, the air-conditioning includes the outdoor of air-conditioning as described above
The device of fan trouble part detection.
In some optional embodiments, a kind of non-transitorycomputer readable storage medium including instruction is additionally provided,
Memory for example including instruction, above-metioned instruction can be executed by processor to complete previously described method.Above-mentioned non-transitory
Computer readable storage medium can be read-only memory (Read Only Memory, ROM), random access memory
(Random Access Memory, RAM), tape and light storage device etc..
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, the specific application and design constraint depending on technical solution.Those of skill in the art can be with
Each specific application is used different methods to achieve the described function, but this realization is it is not considered that exceed this hair
Bright range.It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description is
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In embodiments disclosed herein, it should be understood that disclosed method, product (including but not limited to device, set
It is standby etc.), it may be implemented in other ways.The apparatus embodiments described above are merely exemplary, for example, the list
Member division, only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, in this hair
Each functional unit in bright each embodiment can integrate in one processing unit, is also possible to the independent physics of each unit and deposits
It can also be integrated in one unit with two or more units.
It should be understood that the flow chart and block diagram in the drawings show the system of multiple embodiments according to the present invention,
The architecture, function and operation in the cards of method and computer program product.In this regard, in flowchart or block diagram
Each box can represent a part of a module, section or code, a part packet of the module, section or code
Containing one or more executable instructions for implementing the specified logical function.It should also be noted that in some realities as replacement
In existing, function marked in the box can also occur in a different order than that indicated in the drawings.For example, two continuous sides
Frame can actually be basically executed in parallel, they can also be executed in the opposite order sometimes, this according to related function and
It is fixed.It is also noted that the group of each box in block diagram and or flow chart and the box in block diagram and or flow chart
It closes, can be realized with the dedicated hardware based system for executing defined function or movement, or specialized hardware can be used
Combination with computer instruction is realized.The invention is not limited to the process for being described above and being shown in the accompanying drawings and knots
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the present invention only by the attached claims Lai
Limitation.
Claims (13)
1. a kind of method of the outdoor fan fault detection of air-conditioning characterized by comprising
After the compressor of air-conditioning reaches setting speed, the first high pressure end pressure and the total electricity of the first operation of the air-conditioning are obtained
Stream；
According to the first high pressure end pressure and the first operation total current, the fault condition of outdoor fan is judged.
2. the method according to claim 1, wherein described according to the first high pressure end pressure and described first
Total current is run, the fault condition of outdoor fan is judged, specifically includes:
Work as Pd1> Pdmax, Is>=I-i and IsWhen ≠ I, determine that the outdoor fan breaks down；Otherwise, it is determined that the outdoor fan
It does not break down；
Wherein, Pd1For the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I is sky
The total current operated normally is adjusted, i is the consumption electric current that outdoor fan operates normally, IsFirst for air-conditioning runs total current.
3. according to the method described in claim 2, it is characterized in that, after determining that the outdoor fan breaks down, further includes:
Judge I-i≤IsWhether < I is true；
As I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for the outdoor fan；
As I-i≤IsWhen < I is invalid, determine that stall failure occurs for the outdoor fan.
4. the method according to claim 1, wherein the air-conditioning further include:
High-voltage end pressure sensor, for detecting the high pressure end pressure of the air-conditioning；
Low-pressure end pressure sensor, for detecting the low pressure end pressure of the air-conditioning；
The method also includes:
Judge whether the air-conditioning is in disorderly closedown state；
After the first preset time for receiving the judgement result that the air-conditioning is in disorderly closedown state,
Obtain the second high-pressure side pressure and the second low pressure end pressure of the air-conditioning；
According to the second high-pressure side pressure and the second low pressure end pressure, the high-voltage end pressure sensor and described is judged
The fault condition of low-pressure end pressure sensor.
5. according to the method described in claim 4, it is characterized in that, described according to the second high-pressure side pressure and described second
Low pressure end pressure judges the fault condition of the high-voltage end pressure sensor and the low-pressure end pressure sensor, specifically includes:
Judge Ps2≤Pd2≤Ps2Whether+Δ P is true；
Work as Ps2≤Pd2≤Ps2When+Δ P is set up, determine that high-voltage end pressure sensor and low-pressure end pressure sensor do not break down；
Work as Ps2≤Pd2≤Ps2When+Δ P is invalid, determine that high-voltage end pressure sensor and low-pressure end pressure sensor break down；
Wherein, Pd2Second of the air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
High pressure end pressure, Ps2Of the air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Two low pressure end pressures, Δ P are preset pressure difference value.
6. the method according to claim 1, wherein further include:
Obtain the times N that the outdoor fan breaks down in the second preset time；
Judge N >=N0It is whether true；
As N >=N0When establishment, the fault locking of the air-conditioning is carried out, stops the outdoor fan fault detection；
As N >=N0When invalid, continue the outdoor fan fault detection；
Wherein, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is default second for outdoor fan
The preset number of stoppages in time.
7. a kind of device of the outdoor fan fault detection of air-conditioning characterized by comprising
First acquisition unit, for after the compressor of air-conditioning reaches setting speed, obtaining the first high pressure side pressure of the air-conditioning
Power and the first operation total current；
First judging unit, for judging outdoor fan according to the first high pressure end pressure and the first operation total current
Fault condition.
8. device according to claim 7, which is characterized in that first judging unit is specifically used for:
Work as Pd1> Pdmax, Is>=I-i and IsWhen ≠ I, determine that the outdoor fan breaks down；Otherwise, it is determined that the outdoor fan
It does not break down；
Wherein, Pd1For the first high pressure end pressure of air-conditioning, PdmaxFor the high-voltage end upper pressure limit value that air-conditioning operates normally, I is sky
The total current operated normally is adjusted, i is the consumption electric current that outdoor fan operates normally, IsFirst for air-conditioning runs total current.
9. device according to claim 8, which is characterized in that first judging unit also uses ten:
Judge I-i≤IsWhether < I is true；
As I-i≤IsWhen < I is set up, determine that revolving speed abnormal failure occurs for the outdoor fan；
As I-i≤IsWhen < I is invalid, determine that stall failure occurs for the outdoor fan.
10. device according to claim 7, which is characterized in that the air-conditioning further include:
High-voltage end pressure sensor, for detecting the high pressure end pressure of the air-conditioning；
Low-pressure end pressure sensor, for detecting the low pressure end pressure of the air-conditioning；
Described device further include:
Second judgment unit, for judging whether the air-conditioning is in disorderly closedown state；
Second acquisition unit, the first preset time for being in the judgement result of disorderly closedown state for receiving the air-conditioning
Afterwards, the second high-pressure side pressure and the second low pressure end pressure of the air-conditioning are obtained；
Third judging unit, for judging the high pressure according to the second high-pressure side pressure and the second low pressure end pressure
The fault condition of side pressure force snesor and the low-pressure end pressure sensor.
11. device according to claim 10, which is characterized in that the third judging unit is specifically used for:
Judge Ps2≤Pd2≤Ps2Whether+Δ P is true；
Work as Ps2≤Pd2≤Ps2When+Δ P is set up, determine that high-voltage end pressure sensor and low-pressure end pressure sensor do not break down；
Work as Ps2≤Pd2≤Ps2When+Δ P is invalid, determine that high-voltage end pressure sensor and low-pressure end pressure sensor break down；
Wherein, Pd2Second of the air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
High pressure end pressure, Ps2Of the air-conditioning after the first preset time to receive the judgement result that air-conditioning is in disorderly closedown state
Two low pressure end pressures, Δ P are preset pressure difference value.
12. device according to claim 7, which is characterized in that described device further include:
Third acquiring unit, the times N to break down in the second preset time for obtaining the outdoor fan；
4th judging unit, for judging N >=N0It is whether true；
Control unit is used for:
As N >=N0When establishment, the fault locking of the air-conditioning is carried out, stops the outdoor fan fault detection；
As N >=N0When invalid, continue the outdoor fan fault detection；
Wherein, N is the number that outdoor fan actually occurs failure in the second preset time, N0It is default second for outdoor fan
The preset number of stoppages in time.
13. a kind of air-conditioning, which is characterized in that the outdoor fan event including the air-conditioning as described in any one of claim 7 to 12
Hinder the device of detection.
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| CN201910228310.1A CN110006150B (en) | 2019-03-25 | 2019-03-25 | Method and device for detecting fault of outdoor fan of air conditioner and air conditioner |
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