CN109654055A - Detection method and detection device for wind pressure abnormity, fan and air conditioner - Google Patents
Detection method and detection device for wind pressure abnormity, fan and air conditioner Download PDFInfo
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- CN109654055A CN109654055A CN201811559010.3A CN201811559010A CN109654055A CN 109654055 A CN109654055 A CN 109654055A CN 201811559010 A CN201811559010 A CN 201811559010A CN 109654055 A CN109654055 A CN 109654055A
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- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 230000002159 abnormal effect Effects 0.000 claims abstract description 123
- 238000000034 method Methods 0.000 claims abstract description 46
- 230000005856 abnormality Effects 0.000 claims description 18
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 7
- 230000008439 repair process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005055 memory storage Effects 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 108010001267 Protein Subunits Proteins 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a detection method and a detection device for wind pressure abnormity, a fan and an air conditioner, wherein the method comprises the following steps: detecting whether the wind pressure of the fan is abnormal or not; when the wind pressure is abnormal, adjusting the rotating speed of the fan and detecting the current wind pressure of the fan; and determining the reason of the wind pressure abnormity according to the current wind pressure. The invention solves the problems that the prior art is directly shut down when the wind pressure is abnormal and cannot be adjusted according to abnormal reasons, improves the stability of the unit and is convenient for after-sales personnel to maintain.
Description
Technical field
The present invention relates to blower technical field, in particular to a kind of detection method of wind pressure exception, detection device,
Blower and air-conditioning.
Background technique
At this stage, business air conditioner field is mostly used various large-scale adjustable speed centrifugal blowers.Standard configuration wind pressure inspection inside business air conditioner
It surveys device and has become normality, common detection device has blast switch and two kinds of wind pressure sensor.Blast switch is binary control
Device, only there are two types of forms or disconnection or closure, single chip control module can not learn its specific pressure for output signal
Data.Wind pressure sensor is mostly that numeric type integrates detection module, the included conversion pressure unit in inside, with single chip control module it
Between can by IIC communications protocol realize data read-write control, single chip control module is it can be seen that specific pressure data.
Whether blower works well, and whether air duct leaks out, and whether air duct blocks, and is generally all judged by wind pressure.At present
Common fault detection method are as follows: when air-conditioner set booting operation, after blower opens stable operation for a period of time, if detecting outlet air
One's intention as revealed in what one says presses off OFF signal disconnection or wind pressure sensor reading is smaller, is judged as low wind pressure failure at this time, and hard stop closes institute
There is load.If detecting, air inlet blast switch signal is disconnected or wind pressure sensor reading is larger, is judged as high wind pressure event at this time
Barrier, hard stop close all loads.
However problems exist in the prior art: 1. currently used control method can not determine unit fault degree,
Such as blower can be run but actual speed and rated rotational frequency have deviation, fault-free signal is fed back blower again, such as in unit
Portion air duct is damaged or does not cause tightly to leak out, or because grieshoch or foreign matter result in blockage, but is not very serious etc..2. unit is frequent
Report failure will lead to compressor emergency shutdown, or even user is caused to worry whether the quality of the product is qualified, cause to complain, return goods etc..③
The place of constant temperature and humidity is needed in certain Special use occasions, such as data center, server room etc., air-conditioner set need 24 are small
When run without interruption, can not request stop, should guarantee set steady reliability service as far as possible, guarantee normal air output.
For the problem that directly being shut down when wind pressure exception in the related technology, can not be adjusted according to abnormal cause, at present
It not yet proposes to efficiently solve scheme.
Summary of the invention
It is existing at least to solve the present invention provides detection method, detection device, blower and the air-conditioning of a kind of wind pressure exception
The problem of technology apoplexy reduce off-flavor is directly shut down when normal, can not be adjusted according to abnormal cause.
In order to solve the above technical problems, according to an aspect of an embodiment of the present invention, providing a kind of wind pressure abnormality detection
Method, comprising: whether the wind pressure of detection blower fan is abnormal；In wind pressure exception, the revolving speed of blower is adjusted, and detection blower fan is current
Wind pressure；Wind pressure abnormal cause is determined according to current wind pressure.
Further, in the wind pressure of detection blower fan whether before exception, further includes: according to rotating speed of target control blower fortune
Row, when fan operation reaches default runing time, whether the wind pressure of detection trigger blower is abnormal.
Further, whether the wind pressure of detection blower fan is abnormal, comprising: practical wind pressure of the detection blower fan under rotating speed of target；
Calculate the wind pressure difference △ P of practical wind pressure standard wind pressure corresponding with rotating speed of target；The wind of blower is judged according to wind pressure difference △ P
Whether pressure is abnormal.
Further, judge whether the wind pressure of blower is abnormal according to wind pressure difference △ P, comprising: it is corresponding to calculate standard wind pressure
Leeway threshold value △ Pset；According to the relationship of wind pressure difference △ P and leeway threshold value △ Pset judge blower wind pressure whether
It is abnormal.
Further, the corresponding leeway threshold value △ Pset of standard wind pressure is calculated, comprising: judgment criteria wind pressure P0 and first
The relationship of the default default wind pressure PB of wind pressure PA, standard wind pressure P0 and second；Wherein, the first default wind pressure PA is less than the second default wind
Press PB；
The corresponding leeway threshold value △ Pset of standard wind pressure P0 is determined according to relationship.
Further, the corresponding leeway threshold value △ Pset of standard wind pressure P0 is determined according to relationship, comprising: in standard wind pressure
When P0≤PA, leeway threshold value △ Pset=P0*C；In standard wind pressure PA < P0≤PB, leeway threshold value △ Pset=P0*
D；In standard wind pressure P0 > PB, leeway threshold value △ Pset=P0*E；Wherein, C is the first preset ratio value, D is second pre-
If ratio value, E are third preset ratio value, and C < D < E.
Further, judge whether the wind pressure of blower is different according to the relationship of wind pressure difference △ P and leeway threshold value △ Pset
Often, comprising: in △ P > △ Pset or △ P <-△ Pset, determine that the wind pressure of blower is abnormal；Otherwise, it determines the wind pressure of blower
Normally.
Further, in wind pressure exception, the revolving speed of blower is adjusted, comprising: in △ P > △ Pset, at interval of default
Time reduces the revolving speed of blower according to preset ratio；In △ P <-△ Pset, mentioned at interval of preset time according to preset ratio
The revolving speed of high blower.
Further, in △ P > △ Pset, wind pressure abnormal cause is determined according to current wind pressure, comprising: at interval of default
Time judges whether current wind pressure is abnormal；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing to adjust blower
Revolving speed, and when the revolving speed of blower reaches default minimum speed, calculate current wind pressure standard corresponding with default minimum speed
The corresponding leeway threshold value △ Pset1 of wind pressure difference △ P1 and P1 of wind pressure P1, according to wind pressure difference △ P1 and leeway threshold
The relationship of value △ Pset1 determines wind pressure abnormal cause；
Further, in △ P <-△ Pset, wind pressure abnormal cause is determined according to current wind pressure, comprising: at interval of pre-
If the time, judge whether current wind pressure is abnormal；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing to adjust blower
Revolving speed calculate current wind pressure standard corresponding with default maximum (top) speed and when the revolving speed of blower is default maximum (top) speed
The corresponding leeway threshold value △ Pset2 of wind pressure difference △ P2 and P2 of wind pressure P2, according to wind pressure difference △ P2 and leeway threshold
The relationship of value △ Pset2 determines wind pressure abnormal cause.
Further, wind pressure abnormal cause is determined according to the relationship of wind pressure difference △ P1 and leeway threshold value △ Pset1, wrapped
It includes: in-△ Pset1≤△ P1≤△ Pset1, determining that wind pressure abnormal cause blocks for air duct, and/or, rotation speed of fan is too fast
It is abnormal；Otherwise, it determines blower is normal.
Further, wind pressure abnormal cause is determined according to the relationship of wind pressure difference △ P2 and leeway threshold value △ Pset2, wrapped
It includes: in-△ Pset2≤△ P2≤△ Pset2, determining that wind pressure abnormal cause is air duct breakage, and/or, rotation speed of fan is excessively slow
It is abnormal；Otherwise, it determines blower is normal.
Further, after determining wind pressure abnormal cause according to current wind pressure, method further include: control fan parking, and
Remind user's wind pressure abnormal cause.
According to another aspect of an embodiment of the present invention, a kind of wind pressure abnormal detector is provided, comprising: detection module,
For controlling fan operation according to rotating speed of target, whether the wind pressure of detection blower fan is abnormal；Adjustment module, in wind pressure exception
When, adjust the revolving speed of blower, and the current wind pressure of detection blower fan；Determining module, for determining wind pressure exception according to current wind pressure
Reason.
Another aspect according to an embodiment of the present invention, provides a kind of blower, fills including such as above-mentioned wind pressure abnormality detection
It sets.
Another aspect according to an embodiment of the present invention, provides a kind of air-conditioning, including such as above-mentioned blower.
Another aspect according to an embodiment of the present invention, provides a kind of computer equipment, including memory, processor and deposits
The computer program that can be run on a memory and on a processor is stored up, processor realizes that the wind pressure as above-mentioned is different when executing program
Normal detection method.
Another aspect according to an embodiment of the present invention provides a kind of storage medium comprising computer executable instructions,
Computer executable instructions by computer processor when being executed for executing such as above-mentioned wind pressure method for detecting abnormality.
In the present invention, a kind of wind pressure method for detecting abnormality is provided, is controlling fan operation according to rotating speed of target first
During detection blower fan wind pressure it is whether abnormal, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan is current
Wind pressure, to determine wind pressure abnormal cause according to current wind pressure.Wind pressure exception can be determined in wind pressure exception by the above method
Reason improves the stabilization of unit so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art
Property, while being repaired convenient for after-sales staff.
Detailed description of the invention
Fig. 1 is a kind of optional flow chart of wind pressure method for detecting abnormality according to an embodiment of the present invention；
Fig. 2 is the optional flow chart of another kind of wind pressure method for detecting abnormality according to an embodiment of the present invention；And
Fig. 3 is a kind of optional structural block diagram of wind pressure abnormal detector according to an embodiment of the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Embodiment 1
A kind of wind pressure method for detecting abnormality is provided in the preferred embodiment of the invention 1, this method can be applied directly
To on various blowers, can also be applied on other devices with fan section function, it, can be by wind when specific implementation
Machine or other devices install the mode of software, APP or the corresponding program of writing controller to realize.Specifically, Fig. 1 shows
A kind of optional flow chart of this method out, as shown in Figure 1, this method comprises the following steps S102-S106:
S102: whether the wind pressure of detection blower fan is abnormal；
S104: in wind pressure exception, the revolving speed of blower, and the current wind pressure of detection blower fan are adjusted；
S106: wind pressure abnormal cause is determined according to current wind pressure.
In the above-described embodiment, a kind of wind pressure method for detecting abnormality is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Wherein, in the wind pressure of detection blower fan whether before exception, further includes: fan operation is controlled according to rotating speed of target,
When fan operation reaches default runing time, whether the wind pressure of detection trigger blower is abnormal.
In one preferred embodiment of the invention, whether the wind pressure of detection blower fan is abnormal, comprising: detection blower fan is in mesh
Mark the practical wind pressure under revolving speed；Calculate the wind pressure difference of practical wind pressure standard wind pressure corresponding with rotating speed of target；Wherein, it is preset with
The mapping table of rotation speed of fan and standard wind pressure；Judge whether the wind pressure of blower is abnormal according to wind pressure difference.Table 1 is used as blower
The standard reference data of the corresponding relationship of revolving speed and standard wind pressure, primary control program do memory storage, in case detection comparative analysis makes
With.Data are only used to illustrate the design method in table 1, provide an intuitive effect.Because different blowers are identical
Revolving speed percentage downdraft is different, and each unit can also impact wind pressure data because of Duct design difference.Only when this
Air-conditioner set, which determines, to be standardized experiment test after design scheme and material type selecting again and obtains corresponding data, and table 1 is organized into,
And it is stored by mainboard nondeclarative memory.
Table 1
Further, judge whether the wind pressure of blower is abnormal according to wind pressure difference, comprising: calculate the corresponding wind of standard wind pressure
Threshold pressure differential；Judge whether the wind pressure of blower is abnormal according to the relationship of wind pressure difference and leeway threshold value.
Wherein, the corresponding leeway threshold value of standard wind pressure is calculated, comprising: the default wind pressure of judgment criteria wind pressure P0 and first
The relationship of the default wind pressure PB of PA, standard wind pressure P0 and second；Wherein, the first default wind pressure PA wind pressure PB default less than second；Root
The corresponding leeway threshold value △ Pset of standard wind pressure P0 is determined according to above-mentioned relation.
Determine the corresponding leeway threshold value △ Pset of standard wind pressure P0 according to above-mentioned relation, comprising: standard wind pressure P0≤
When PA, leeway threshold value △ Pset=P0*C；In standard wind pressure PA < P0≤PB, leeway threshold value △ Pset=P0*D；?
When standard wind pressure P0 > PB, leeway threshold value △ Pset=P0*E；Wherein, C is the first preset ratio value, D is the second default ratio
Example value, E are third preset ratio value, and C < D < E.
Further, judge whether the wind pressure of blower is abnormal according to the relationship of wind pressure difference and leeway threshold value, comprising:
When wind pressure difference △ P > leeway threshold value △ Pset or △ P <-△ Pset, determine that the wind pressure of blower is abnormal；Otherwise, it determines wind
The wind pressure of machine is normal.
In presently preferred embodiment, in wind pressure exception, the revolving speed of blower is adjusted, comprising: in △ P
When > △ Pset, the revolving speed of blower is reduced according to preset ratio at interval of preset time；In △ P <-△ Pset, at interval of pre-
If the time improves the revolving speed of blower according to preset ratio.
Preferably, in △ P > △ Pset, wind pressure abnormal cause is determined according to current wind pressure, comprising: at interval of it is default when
Between, judge whether current wind pressure is abnormal；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing to adjust turning for blower
Speed, and when the revolving speed of blower reaches default minimum speed, calculate current wind pressure standard wind corresponding with default minimum speed
The corresponding leeway threshold value △ Pset1 of wind pressure difference △ P1 and P1 for pressing P1, according to wind pressure difference △ P1 and leeway threshold value
The relationship of △ Pset1 determines wind pressure abnormal cause；Further, according to wind pressure difference △ P1's and leeway threshold value △ Pset1
Relationship determines wind pressure abnormal cause, comprising: in-△ Pset1≤△ P1≤△ Pset1, determines that wind pressure abnormal cause is air duct
Blocking, and/or, the too fast exception of rotation speed of fan；Otherwise, it determines blower is normal.
In addition, determining wind pressure abnormal cause according to current wind pressure in △ P <-△ Pset, comprising: at interval of it is default when
Between, judge whether current wind pressure is abnormal；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing to adjust turning for blower
Speed, and when the revolving speed of blower is default maximum (top) speed, calculate current wind pressure standard wind pressure corresponding with default maximum (top) speed
The corresponding leeway threshold value △ Pset2 of wind pressure difference △ P2 and P2 of P2, according to wind pressure difference △ P2 and leeway threshold value △
The relationship of Pset2 determines wind pressure abnormal cause.Further, according to the pass of wind pressure difference △ P2 and leeway threshold value △ Pset2
It is to determine wind pressure abnormal cause, comprising: in-△ Pset2≤△ P2≤△ Pset2, determine that wind pressure abnormal cause is broken for air duct
Damage, and/or, rotation speed of fan is excessively slow abnormal；Otherwise, it determines blower is normal.
When fan operation exception but can run or when the breakage of air-conditioner set air duct leaks out but is not serious, Huo Zhekong
Adjust the blocking of unit air duct but it is not serious when, by adaptive strain wind speed tune air quantity control method, make up because of blower misoperation or
Person air duct leads to wind pressure exception bring adverse effect extremely, preferential to guarantee that unit operates normally, rather than directly report failure is stopped
Machine.
Above scheme bring it is many utility model has the advantages that
1, stability, the reliability for improving unit operation, reduce to the greatest extent because wind pressure causes to shut down extremely, are conducive to special make
It is controlled with the temperature and humidity precision of occasion (such as data center, computer room etc.).
2, fault alarm frequency is reduced, after-sale service is conducive to, reduces customer complaint.
3, wind pressure abnormal cause is automatically analyzed, corresponding status display and alarm prompt is done, operation maintenance personnel is facilitated to overhaul.
In another preferred embodiment of the invention, after determining wind pressure abnormal cause according to current wind pressure, method
Include: control fan parking, and reminds user's wind pressure abnormal cause.After the reason for determining wind pressure exception, illustrate wind pressure exception
State needs processing in time, otherwise will affect the normal operation of unit, therefore just shutdown is handled after determining failure cause, and is led to
Know user's abnormal cause.
In the preferred embodiment of the invention 1, another preferred embodiment is additionally provided, as shown in Fig. 2, specific real
Apply that steps are as follows:
Step 1: experiment test production table 1 is used as standard reference data, and primary control program does memory storage, in case detection comparison
Analysis uses；
Step 2: unit powers on, and sets rotation speed of fan maximum value Fpmax and minimum value Fpmin.Booting operation, it is steady to blower
Surely after running 3 minutes, current rotation speed of fan percentage is recorded, and acquire currently practical wind pressure data P1；
Step 3: inquiring the wind pressure reference value P0 under current rotation speed of fan control percentage, and calculate same rotation speed of fan control
Wind pressure deviation △ P under percentage processed, by △ P=P1-P0；
Step 4: the corresponding pressure divergence setting value △ Pset of the P0 of 1 metering pressure standard value of computational chart, according to the following rules
It calculates: as P0≤PA, △ Pset=P0*5%；As PA < P0≤PB, △ Pset=P0*7%；As P0 > PB, △
Pset=P0*10% (the wherein reasonable value that PA and PB is application definition).
Step 5: judge △ P whether within the scope of deviation setting, as | △ P | whether≤△ Pset true?
Step 6: if step 5 conditional is invalid, and being △ P > △ Pset, illustrate that actual measurement wind pressure is inclined relative to reference value
Height carries out drop wind speed processing at this time, and rotation speed of fan controls percentage and executes by reduction by 1% in every 10 seconds, and continues to test blower and turn
Whether the wind pressure after speed changes can be stablized in the deviation range that setting allows, and step 5 is executed.If rotation speed of fan is reduced to most
Low permissible value FPmin still cannot be such that wind pressure stablizes in the deviation range that setting allows, then display screen prompts high wind pressure to accuse
It is alert, remind operation maintenance personnel maintenance blower whether normal, whether air duct blocks.
Step 7: if step 5 conditional is invalid, and being △ P <-△ Pset, illustrate that actual measurement wind pressure is inclined relative to reference value
It is low, a liter wind speed processing is carried out at this time, and rotation speed of fan controls percentage and increased 1% execution by every 10 seconds, and continues to test blower and turn
Whether the wind pressure after speed changes can be stablized in the deviation range that setting allows, and step 5 is executed.If rotation speed of fan has risen to most
High permissible value FPmax still cannot be such that wind pressure stablizes in the deviation range that setting allows, then display screen prompts low wind pressure to accuse
It is alert, remind operation maintenance personnel maintenance blower whether normal, whether air duct is damaged.
Step 8: if step 5 conditional is set up, illustrating that wind pressure is normal, keep current state operation at this time.
When operation maintenance personnel periodic inspection, in the reasonable scope, unit does not prompt low wind pressure alarm and high wind pressure to pressure divergence
Alarm, and do not find that blower exception or air duct are abnormal, and occurred " under wind pressure in display screen state information history logout
Deviate amendment " or " deviateing amendment on wind pressure ", operation maintenance personnel can decide whether 1 pressure mark of change table according to field condition
Quasi- value setting, or the proportionality coefficient or Rule of judgment threshold value of modification pressure divergence setting value △ Pset, for example, as P0≤PA,
△ Pset=P0*5% can change PA setting value or be adjusted to 3% etc. for 5%.
The invention proposes a kind of more reasonable wind pressure abnormal examination and protection control methods, when blower appearance operation is different
When the case where often but can running or when the breakage of air-conditioner set air duct leaks out or blocks but is not serious, pass through adaptive strain
Wind speed adjusts air quantity control method, make up because blower misoperation or air duct extremely caused by wind pressure exception bring it is bad
It influences, avoids frequently reporting failure, it is preferential to guarantee that unit operates normally, rather than shut down because of error protection.
Embodiment 2
The wind pressure method for detecting abnormality provided in 1 based on the above embodiment, also provides in the preferred embodiment of the invention 2
A kind of wind pressure abnormal detector, specifically, Fig. 3 shows a kind of optional structural block diagram of the device, as shown in figure 3, should
Device includes:
Whether detection module 302, the wind pressure for detection blower fan are abnormal；
Adjustment module 304 is connect with detection module 302, for adjusting the revolving speed of blower, and detect in wind pressure exception
The current wind pressure of blower；
Determining module 306 is connect with adjustment module 304, for determining wind pressure abnormal cause according to current wind pressure.
In the above-described embodiment, a kind of wind pressure abnormal detector is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Further, detection module 302 includes: detection sub-module, for practical wind of the detection blower fan under rotating speed of target
Pressure；Computational submodule, for calculating the wind pressure difference of practical wind pressure standard wind pressure corresponding with rotating speed of target；Wherein, it is preset with
The mapping table of rotation speed of fan and standard wind pressure；Judging submodule, for judged according to wind pressure difference blower wind pressure whether
It is abnormal.
Wherein, judging submodule includes: computing unit, for calculating the corresponding leeway threshold value of standard wind pressure；Judgement is single
Whether member, the wind pressure for judging blower according to the relationship of wind pressure difference and leeway threshold value are abnormal.
Computing unit includes:
First judgment sub-unit, it is pre- for the default wind pressure PA of judgment criteria wind pressure P0 and first, standard wind pressure P0 and second
If the relationship of wind pressure PB；Wherein, the first default wind pressure PA wind pressure PB default less than second；Subelement is determined, for according to relationship
Determine the corresponding leeway threshold value △ Pset of standard wind pressure P0.Determine that subelement is specifically used for: in standard wind pressure P0≤PA, wind
Threshold pressure differential △ Pset=P0*C；In standard wind pressure PA < P0≤PB, leeway threshold value △ Pset=P0*D；In standard wind pressure
When P0 > PB, leeway threshold value △ Pset=P0*E；Wherein, C is the first preset ratio value, D is the second preset ratio value, E is
Third preset ratio value, and C < D < E.
Judging unit is specifically used for: in wind pressure difference △ P > leeway threshold value △ Pset or △ P <-△ Pset, determining
The wind pressure of blower is abnormal；Otherwise, it determines the wind pressure of blower is normal.
Further, adjustment module 304 includes:
First adjusts submodule, for reducing blower according to preset ratio at interval of preset time in △ P > △ Pset
Revolving speed；Second adjusts submodule, for improving blower according to preset ratio at interval of preset time in △ P <-△ Pset
Revolving speed.
Further, it is determined that module 306 includes:
First determines submodule, at interval of preset time, judging whether current wind pressure is different in △ P > △ Pset
Often；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing the revolving speed of adjusting blower, and in the turn up of blower
When to default minimum speed, the wind pressure difference △ P1 of current wind pressure standard wind pressure P1 corresponding with default minimum speed is calculated, with
And the corresponding leeway threshold value △ Pset1 of P1, wind pressure is determined according to the relationship of wind pressure difference △ P1 and leeway threshold value △ Pset1
Abnormal cause；
Second determines submodule, at interval of preset time, judging whether current wind pressure is different in △ P <-△ Pset
Often；If it is not, then determining that the wind pressure of blower is normal；If it is, continuing the revolving speed of adjusting blower, and it is in the revolving speed of blower
When default maximum (top) speed, the wind pressure difference △ P2 of current wind pressure standard wind pressure P2 corresponding with default maximum (top) speed is calculated, and
The corresponding leeway threshold value △ Pset2 of P2 determines that wind pressure is different according to the relationship of wind pressure difference △ P2 and leeway threshold value △ Pset2
Normal reason.
First determines that submodule is specifically used for: in-△ Pset1≤△ P1≤△ Pset1, determining that wind pressure abnormal cause is
Air duct blocking, and/or, the too fast exception of rotation speed of fan；Otherwise, it determines blower is normal；
Second determines that submodule is specifically used for: in-△ Pset2≤△ P2≤△ Pset2, determining that wind pressure abnormal cause is
Air duct is damaged, and/or, rotation speed of fan is excessively slow abnormal；Otherwise, it determines blower is normal.
Further, after determining wind pressure abnormal cause according to current wind pressure, further includes: control module, for controlling wind
Machine is shut down, and reminds user's wind pressure abnormal cause.
About the device in above-described embodiment, wherein each unit, module execute the concrete mode of operation related
It is described in detail in the embodiment of this method, no detailed explanation will be given here.
Embodiment 3
The wind pressure abnormal detector provided in 2 based on the above embodiment, also provides in the preferred embodiment of the invention 3
A kind of blower, including such as above-mentioned wind pressure abnormal detector.
In the above-described embodiment, a kind of wind pressure abnormality detection scheme is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Embodiment 4
The blower provided in 3 based on the above embodiment, additionally provides a kind of air-conditioning in the preferred embodiment of the invention 4,
Including such as above-mentioned blower.
In the above-described embodiment, a kind of wind pressure abnormality detection scheme is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Embodiment 5
The wind pressure abnormality detection scheme provided in 1 based on the above embodiment, also provides in the preferred embodiment of the invention 5
A kind of computer equipment, on a memory and the computer that can run on a processor including memory, processor and storage
Program, the processor realize such as above-mentioned wind pressure method for detecting abnormality when executing described program.
In the above-described embodiment, a kind of wind pressure method for detecting abnormality is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Embodiment 6
The wind pressure abnormality detection scheme provided in 1 based on the above embodiment, also provides in the preferred embodiment of the invention 6
A kind of storage medium comprising computer executable instructions, the computer executable instructions are executed by computer processor
When for executing such as above-mentioned wind pressure method for detecting abnormality.
In the above-described embodiment, a kind of wind pressure method for detecting abnormality is provided, is controlling wind according to rotating speed of target first
Whether the wind pressure of detection blower fan is abnormal during machine is run, if when wind pressure exception, adjusting the revolving speed of blower, and detection blower fan
Current wind pressure, to determine wind pressure abnormal cause according to current wind pressure.By the above method wind can be determined in wind pressure exception
Abnormal cause is pressed, so as to avoid directly shutting down without considering abnormal cause when wind pressure exception in the prior art, improves unit
Stability, while convenient for after-sales staff repair.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (18)
1. a kind of wind pressure method for detecting abnormality characterized by comprising
Whether the wind pressure of detection blower fan is abnormal；
In the wind pressure exception, the revolving speed of the blower is adjusted, and detects the current wind pressure of the blower；
Wind pressure abnormal cause is determined according to the current wind pressure.
2. the method according to claim 1, wherein in the wind pressure whether before exception of detection blower fan, further includes:
Fan operation, when the fan operation reaches default runing time, detection trigger blower are controlled according to rotating speed of target
Whether wind pressure is abnormal.
3. the method according to claim 1, wherein whether the wind pressure of the detection blower is abnormal, comprising:
Detect practical wind pressure of the blower under the rotating speed of target；
Calculate the wind pressure difference △ P of practical wind pressure standard wind pressure corresponding with the rotating speed of target；
Judge whether the wind pressure of the blower is abnormal according to the wind pressure difference △ P.
4. according to the method described in claim 3, it is characterized in that, judging the wind of the blower according to the wind pressure difference △ P
Whether pressure is abnormal, comprising:
Calculate the corresponding leeway threshold value △ Pset of the standard wind pressure；
Judge whether the wind pressure of the blower is different according to the relationship of the wind pressure difference △ P and the leeway threshold value △ Pset
Often.
5. according to the method described in claim 4, it is characterized in that, calculating the corresponding leeway threshold value △ of the standard wind pressure
Pset, comprising:
Judge the relationship of the default wind pressure PA of the standard wind pressure P0 and first, the default wind pressure PB of the standard wind pressure P0 and second；
Wherein, the described first default wind pressure PA is less than the described second default wind pressure PB；
The corresponding leeway threshold value △ Pset of the standard wind pressure P0 is determined according to the relationship.
6. according to the method described in claim 5, it is characterized in that, determining that the standard wind pressure P0 is corresponding according to the relationship
Leeway threshold value △ Pset, comprising:
In the standard wind pressure P0≤PA, the leeway threshold value △ Pset=P0*C；
In the standard wind pressure PA < P0≤PB, the leeway threshold value △ Pset=P0*D；
In the standard wind pressure P0 > PB, the leeway threshold value △ Pset=P0*E；
Wherein, C is the first preset ratio value, D is the second preset ratio value, E is third preset ratio value, and C < D < E.
7. according to the method described in claim 4, it is characterized in that, according to the wind pressure difference △ P and the leeway threshold value
The relationship of △ Pset judges whether the wind pressure of the blower is abnormal, comprising:
In △ P > △ Pset or △ P <-△ Pset, determine that the wind pressure of the blower is abnormal；
Otherwise, it determines the wind pressure of the blower is normal.
8. the method according to the description of claim 7 is characterized in that adjust the revolving speed of the blower in the wind pressure exception,
Include:
In △ P > △ Pset, the revolving speed of the blower is reduced according to preset ratio at interval of preset time；
In △ P <-△ Pset, the revolving speed of the blower is improved according to preset ratio at interval of the preset time.
9. according to the method described in claim 8, it is characterized in that, being determined in △ P > △ Pset according to the current wind pressure
Wind pressure abnormal cause, comprising:
At interval of the preset time, judge whether the current wind pressure is abnormal；
If it is not, then determining that the wind pressure of the blower is normal；
If it is, continue to adjust the revolving speed of the blower, and when the revolving speed of the blower reaches default minimum speed, meter
Wind pressure the difference △ P1 and the P1 for calculating current wind pressure standard wind pressure P1 corresponding with the default minimum speed are corresponding
Leeway threshold value △ Pset1, wind pressure is determined according to the relationship of the wind pressure difference △ P1 and the leeway threshold value △ Pset1
Abnormal cause；
10. true according to the current wind pressure according to the method described in claim 8, it is characterized in that, in △ P <-△ Pset
Determine wind pressure abnormal cause, comprising:
At interval of the preset time, judge whether the current wind pressure is abnormal；
If it is not, then determining that the wind pressure of the blower is normal；
If it is, continuing to adjust the revolving speed of the blower, and when the revolving speed of the blower is default maximum (top) speed, calculate
Wind pressure the difference △ P2 and the P2 of current wind pressure standard wind pressure P2 corresponding with the default maximum (top) speed is corresponding
Leeway threshold value △ Pset2 determines that wind pressure is different according to the relationship of the wind pressure difference △ P2 and the leeway threshold value △ Pset2
Normal reason.
11. according to the method described in claim 9, it is characterized in that, according to the wind pressure difference △ P1 and the leeway threshold
The relationship of value △ Pset1 determines wind pressure abnormal cause, comprising:
In-△ Pset1≤△ P1≤△ Pset1, determine that the wind pressure abnormal cause blocks for air duct, and/or, rotation speed of fan
Too fast exception；Otherwise, it determines the blower is normal.
12. according to the method described in claim 10, it is characterized in that, according to the wind pressure difference △ P2 and the leeway threshold
The relationship of value △ Pset2 determines wind pressure abnormal cause, comprising:
In-△ Pset2≤△ P2≤△ Pset2, determine that the wind pressure abnormal cause is air duct breakage, and/or, rotation speed of fan
It crosses slow abnormal；Otherwise, it determines the blower is normal.
13. the method according to claim 1, wherein according to the current wind pressure determine wind pressure abnormal cause it
Afterwards, the method also includes:
The fan parking is controlled, and reminds wind pressure abnormal cause described in user.
14. a kind of wind pressure abnormal detector characterized by comprising
Whether detection module, the wind pressure for detecting the blower are abnormal；
Adjustment module, for adjusting the revolving speed of the blower, and detect the current wind of the blower in the wind pressure exception
Pressure；
Determining module, for determining wind pressure abnormal cause according to the current wind pressure.
15. a kind of blower, which is characterized in that including wind pressure abnormal detector as claimed in claim 14.
16. a kind of air-conditioning, which is characterized in that including blower as claimed in claim 15.
17. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized as described in any one of claims 1 to 13 when executing described program
The detection method of wind pressure exception.
18. a kind of storage medium comprising computer executable instructions, the computer executable instructions are by computer disposal
For executing the detection method of the wind pressure exception as described in any one of claims 1 to 13 when device executes.
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| CN201811559010.3A CN109654055B (en) | 2018-12-19 | 2018-12-19 | Detection method and detection device for wind pressure abnormity, fan and air conditioner |
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| EP0781966A1 (en) * | 1994-08-31 | 1997-07-02 | Gastar Co., Ltd. | Combustion equipment for judging abnormality or life |
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| CN109654055B (en) | 2020-01-07 |
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