CN209371441U - Strainer filth blockage detection device and air-conditioning - Google Patents
Strainer filth blockage detection device and air-conditioning Download PDFInfo
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- CN209371441U CN209371441U CN201821859982.XU CN201821859982U CN209371441U CN 209371441 U CN209371441 U CN 209371441U CN 201821859982 U CN201821859982 U CN 201821859982U CN 209371441 U CN209371441 U CN 209371441U
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Abstract
The utility model provides a kind of strainer filth blockage detection device and air-conditioning, is related to air-conditioning technical field, solves that differential pressure sensor arrangement is connected to air conditioner filter screen both ends in the prior art to detect strainer dirty stifled situation and there is technical issues that the accuracy detected.The device includes vapour lock, detection system and control system, wherein, vapour lock is arranged on the inner sidewall of air conditioning exhausting pipe, when the air flow direction vapour lock filtered through air conditioner filter screen, detection device can detect vapour lock both ends pressure difference and flow through the flow of vapour lock, and control system can judge the dirty stifled situation of air conditioner filter screen according to the size of pressure difference and/or the size of flow.The utility model is used for the detection of the dirty stifled situation of air conditioner filter screen.
Description
Technical field
The utility model relates to air-conditioning technical fields, more particularly, to a kind of strainer filth blockage detection device and have the filter
The air-conditioning of net filth blockage detection device.
Background technique
As the pursuit of high-quality life level is continuously improved in people, the serious hope for breathing cleaned air is more more and more intense,
Air quality situation becomes the hot issue that the whole people chase, and installs strainer additional at more and more return air inlet for air-conditioner at present to filter sky
Particulate matter in gas, but strainer will appear dirty stifled after a period of use, and if replacing not in time, not only the efficiency of filtration of particulate matters is big
Heavy discount also will affect air conditioning performance reliability, such as noise increases, refrigerating capacity decline, consumption power increase.It uses at present
Differential pressure pick-up real-time detection strainer both ends differential pressure becomes trend in a manner of determining strainer failure.
Differential pressure pick-up is a kind of sensor for measuring a certain equipment or component pressure at two ends difference.Differential pressure pick-up is by adding
Heat source, temperature sensor and control chip composition, when external air flow undisturbed, the rule of temperature field caused by heating source is symmetrical,
Once there is fluid by heating source, temperature field shifts, and temperature sensor (two or more) measures rate of heat delivery, thus counts
Calculate differential pressure.Differential pressure pick-up volume is lightly light-weight, and precision and stability is high, detects in automobile particle trapper, fresh air strainer
Etc. multiple applications.
Applicants have discovered that at least there is following technical problem in the prior art:
Be using the common practice of differential pressure pick-up measurement strainer both ends differential pressure at present: differential pressure pick-up draws two skin supports
Pipe, is respectively placed in the front and rear of screen system, judges the dirty stifled degree of strainer by directly detecting differential pressure.However it is limited to boundary effect
It answers, flow field disorder before and after strainer, velocity gradient is big, is unevenly distributed, and parameter value can not accurate evaluation at Pitot tube measurement a bit
Integrally dirty stifled situation, direct contact type measure the field distribution of heavy dependence speed and boundary condition to strainer；End is small-sized at present simultaneously
Change, Concealable are designed to trend, and space is small between screen system and blower fan system, and resistance is disturbed when air-flow passes through screen system
Unstability that is dynamic and entering the secondary pressure field for increasing differential pressure pick-up test point around flow disturbance before blower fan system, influences to survey
The confidence level of test result；Compared to new strainer, the strainer both ends differential pressure incrementss that fail are less, and the measurement of small differential pressure variable quantity is wanted
It asks and brings challenges to measuring instrument, influence test accuracy.
Utility model content
The purpose of this utility model is to provide a kind of strainer filth blockage detection device and air-conditionings, and solution in the prior art will be poor
Pressure sensor device is connected to air conditioner filter screen both ends to detect the technology that the dirty stifled situation of strainer has the accuracy relative mistake of detection
Problem.Many technical effects that optimal technical scheme in many technical solutions provided by the utility model can be generated are detailed in down
Text illustrates.
To achieve the above object, the utility model provides following technical scheme:
A kind of strainer filth blockage detection device provided by the utility model, including vapour lock, detection system and control system,
In, the vapour lock is arranged on the inner sidewall of the air conditioning exhausting pipe, gas described in the air flow direction filtered through the air conditioner filter screen
When resistance, the detection device can detect vapour lock both ends pressure difference and flow through the flow of the vapour lock, the control system energy
The dirty stifled situation of the air conditioner filter screen is judged according to the size of the size of the pressure difference and/or the flow.
Preferably, the detection device includes differential pressure pick-up, and the differential pressure pick-up is along the length side of the discharge pipe
To the both ends for being connected across the vapour lock.
Preferably, the discharge pipe is connected with the air outlet of the air-conditioning, between the vapour lock and the air outlet
Distance S and the relationship of the discharge pipe area of section D are
Preferably, the vapour lock is short tube or current limiter.
A kind of air-conditioning, including the strainer filth blockage detection device.
The utility model provides a kind of strainer filth blockage detection device, and vapour lock and differential pressure pick-up are arranged in air conditioning exhausting pipe
Interior, since the air-flow of discharge pipe is relatively stable, space is relatively large, and velocity field and pressure field distribution are with respect to regular uniform, test point
The Parameters variation at place can preferably reflect system status, and measurement result accuracy is high, solve in the prior art by differential pressure pick-up
Device is connected to air conditioner filter screen both ends to detect the dirty stifled situation of strainer and there is technical issues that the accuracy of detection.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the main view of strainer filth blockage detection device provided by the embodiment of the utility model；
Fig. 2 is the left view of strainer filth blockage detection device provided by the embodiment of the utility model；
Fig. 3 is the flow chart of detection method provided by the embodiment of the utility model.
1- vapour lock in figure；2- discharge pipe；3- differential pressure pick-up；4- air outlet；5- drip tray；6- heat exchanger；7- motor；8-
Fan blade；9- strainer.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Referring to figures 1-3, the utility model provides a kind of strainer filth blockage detection device, including vapour lock 1, detection system and
Control system, wherein vapour lock 1 is arranged on the inner sidewall of air conditioning exhausting pipe 2, the air flow direction vapour lock 1 filtered through air conditioner filter screen
When, detection device can detect 1 both ends pressure difference of vapour lock and flow through the flow of vapour lock 1, control system can according to the size of pressure difference and/
Or the size of flow judges the dirty stifled situation of air conditioner filter screen.Vapour lock is substantially a kind of barrier, vapour lock can be short tube or
Current limiter, this barrier, which should can generate reasonable pressure difference, to allow detection system to measure, and cannot be in discharge pipe 2
Air-flow generates biggish drag effect, and detection system can measure the pressure difference at 2 both ends of vapour lock and flow through the flow of vapour lock 1；Inspection
Surveying device may include that can measure pressure difference and flow differential pressure pick-up 3；Flow initial value can be prestored in control system
A, flow initial value A are the flow value for flowing through vapour lock 1 measured under the strainer that fails, and control system passes through to specific discharge initial value
The flow value for flowing through vapour lock 1 of A and detection device detection compared with the existing technology will to judge the dirty stifled situation of air conditioner filter screen
Differential pressure sensor arrangement is connected to air conditioner filter screen both ends to detect the dirty stifled situation of strainer, and vapour lock 1 is arranged in sky the utility model
On the inner sidewall for recalling air hose 2, differential pressure pick-up 3 is connected across the both ends of vapour lock 1 along the length direction of discharge pipe 2, discharge pipe 2
Air-flow is relatively stable, and space is relatively large, and velocity field and pressure field distribution are placed with respect to regular uniform, vapour lock 1 and differential pressure pick-up 3
In discharge pipe 2, the Parameters variation at test point can preferably reflect that system status, measurement result accuracy are high.
In addition, existing measure the pressure difference at strainer both ends to judge the dirty stifled situation of strainer, due to losing by differential pressure pick-up 3
It is smaller to imitate strainer both ends differential pressure incrementss, and the changes in flow rate amount at both ends is bigger, control system judges more easily by flow
The dirty stifled situation of strainer out.The utility model also dynamic obtains air conditioner air quantity, and thus estimates the refrigerating capacity of air conditioner, uses
Family can call the parameters such as display air quantity over the display.Differential pressure pick-up 3 provided by the utility model and the setting of vapour lock 1 are going out
In air hose 2, what differential pressure pick-up 3 touched is all the cleaned air filtered through filter net system, good dustproof effect, so that differential pressure
The stability of sensor 3 is high.
As the utility model embodiment, optionally embodiment, discharge pipe 2 are connected with the air outlet 4 of air-conditioning, vapour lock 1
The distance between air outlet 4 S and the relationship of 2 area of section D of discharge pipe areTo guarantee that air-flow is in steady flow
State.Differential pressure pick-up 3 is connected across the both ends of vapour lock 1 by Pitot tube, and Pitot tube should be according to unit knot in vapour lock both ends distance
Depending on structure and specific installation situation, if the too close turbulent interference measurement results of distance, if being difficult to survey apart from the decaying of too far differential pressure is larger
Amount.About the area of section of discharge pipe 2, when the cross sectional shape of discharge pipe 2 is rectangle, 2 area of section D=A*B of discharge pipe,
Middle A and B is respectively the length and width of 2 rectangular section of discharge pipe, and 2 area of other shapes discharge pipe is counted based on practical experience and accordingly
Formula is calculated to be estimated.
A kind of air-conditioning, including strainer filth blockage detection device.
A kind of detection method of strainer filth blockage detection device, comprising the following steps: detection device when air-flow stream passes through vapour lock 1
Detection 1 both ends pressure difference of vapour lock and the flow for flowing through vapour lock 1, control system are sentenced according to the size of pressure difference and/or the size of flow
The dirty stifled situation of disconnected air conditioner filter screen out.
Detection method specifically includes the following contents: step S1, the flow Ai in real-time detection discharge pipe 2；
Step S2, according to the flow initial value A prestored in working condition selection control system；Judge flow initial value A with
The relationship of flow Ai judges the dirty stifled situation of the air conditioner filter screen.Judge the side of the relationship of flow initial value A and flow Ai
Method is specific as follows: if Ai < A- Δ A and duration s, air-conditioning display shows that strainer is dirty stifled, reminds user to replace strainer, otherwise
It continues to test, wherein Δ A is flow allowance.
Flow initial value A can be that the flow value of vapour lock 1 is flowed through under dirty stifled strainer, flow initial value A may be
The flow value of vapour lock 1 is flowed through under clean strainer.It is dirty when flow initial value A is to flow through the flow value of vapour lock 1 under dirty stifled strainer
Stifled strainer can be in failure strainer and to set the stream for flowing through vapour lock 1 measured under operating condition for failure strainer, i.e. flow initial value A
Magnitude, it is different according to the operating condition of setting, multiple flow initial value A are prestored in the controls, it is different according to the operating condition of setting,
Multiple flow initial value A are prestored in control system；Operating condition may include temperature, humidity, particulate in air concentration, blower and turn
Speed, the one or more of compressor of air conditioner running frequency.Strainer failure should be according to GB/T 18801-2015 " air purifier mark
It is quasi- " determined, think to assert strainer failure when CADR value is less than initial value 50% in the dirty stifled test of strainer.Meanwhile in order to protect
Card determines the confidence level of result, and temperature margin Δ T, humidity margin Δ W, particulate matter allowance can be set separately in the controls
Δ S, flow margin Δ A.
As the utility model embodiment, optionally embodiment, detection method further include the following contents: step Z1: booting
Detection blower fan accumulated running time Zi afterwards；
Step Z2: judging blower accumulated running time Zi and sets the relationship of blower accumulated running time Z to judge sky
Adjust the dirty stifled situation of strainer.The method for judging blower accumulated running time Zi and setting the relationship of blower accumulated running time Z has
Body is as follows: if Zi >=Z, air-conditioning display shows the dirty stifled failure of strainer, and user is reminded to replace strainer, and screen replacing rear fan
The clearing of accumulated running time Zi adds up again.
Referring to Fig. 3, measure under different working conditions fail strainer flow initial value A, can be denoted as A1, A2,
A3......, it and is pre-stored in control system；Set blower accumulated running time Z；Start unit, when detection blower fan adds up operation
Between Zi, judge the relationship of the blower accumulated running time Z of blower accumulated running time Zi and setting, if Zi >=Z, air-conditioning is shown
Device shows the dirty stifled failure of strainer, and user is reminded to replace strainer, and adjusts blower accumulated running time Zi to reset again after screen replacing
It is accumulative, if Zi < Z, according to the flow initial value A prestored in working condition selection control system, judge flow initial value A and flow
The relationship of Ai, if Ai < A- Δ A and duration s, air-conditioning display shows that strainer is dirty stifled, and user is reminded to replace strainer, otherwise after
Continuous step Z2, that is, judge the relationship of the blower accumulated running time Z of blower accumulated running time Zi and setting.According to discharge pipe 2
Flow and the cooperation of blower accumulated running time determine that strainer is dirty stifled, when can evade the differential pressure pick-up system failure strainer it is dirty stifled and
The risk that can not be alarmed.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (5)
1. a kind of strainer filth blockage detection device, which is characterized in that including vapour lock (1), detection system and control system, wherein
The vapour lock (1) is arranged on the inner sidewall of air conditioning exhausting pipe (2), vapour lock described in the air flow direction through air conditioner filter screen filtering
(1) when, the detection device can detect the vapour lock (1) both ends pressure difference and flow through the flow of the vapour lock (1), the control
System can judge the dirty stifled situation of the air conditioner filter screen according to the size of the pressure difference and/or the size of the flow.
2. strainer filth blockage detection device according to claim 1, which is characterized in that the detection device includes differential pressure sensing
Device (3), the differential pressure pick-up (3) are connected across the both ends of the vapour lock (1) along the length direction of the discharge pipe (2).
3. strainer filth blockage detection device according to claim 1, which is characterized in that the discharge pipe (2) and the air-conditioning
Air outlet (4) be connected, the distance between the vapour lock (1) and the air outlet (4) S and the discharge pipe (2) section face
Product D relationship be
4. strainer filth blockage detection device according to claim 1, which is characterized in that the vapour lock (1) is short tube or current limliting
Device.
5. a kind of air-conditioning, which is characterized in that including strainer filth blockage detection device of any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821859982.XU CN209371441U (en) | 2018-11-12 | 2018-11-12 | Strainer filth blockage detection device and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821859982.XU CN209371441U (en) | 2018-11-12 | 2018-11-12 | Strainer filth blockage detection device and air-conditioning |
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| Publication Number | Publication Date |
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| CN209371441U true CN209371441U (en) | 2019-09-10 |
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| CN201821859982.XU Active CN209371441U (en) | 2018-11-12 | 2018-11-12 | Strainer filth blockage detection device and air-conditioning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269015A (en) * | 2018-11-12 | 2019-01-25 | 珠海格力电器股份有限公司 | Strainer filth blockage detection device, detection method and air-conditioning |
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- 2018-11-12 CN CN201821859982.XU patent/CN209371441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269015A (en) * | 2018-11-12 | 2019-01-25 | 珠海格力电器股份有限公司 | Strainer filth blockage detection device, detection method and air-conditioning |
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