CN109406068A - Vehicle air-conditioner evaporator core detection device and detection method - Google Patents
Vehicle air-conditioner evaporator core detection device and detection method Download PDFInfo
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- CN109406068A CN109406068A CN201811507978.1A CN201811507978A CN109406068A CN 109406068 A CN109406068 A CN 109406068A CN 201811507978 A CN201811507978 A CN 201811507978A CN 109406068 A CN109406068 A CN 109406068A
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- 238000001514 detection method Methods 0.000 title claims abstract description 110
- 238000004519 manufacturing process Methods 0.000 claims abstract description 29
- 230000007547 defect Effects 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000033228 biological regulation Effects 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 208000031872 Body Remains Diseases 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 68
- 238000000034 method Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of vehicle air-conditioner evaporator core detection device and its detection methods, described device includes: a rack, one evaporator core is set on the work top of the rack, described device further comprises: a gas production unit, the gas production unit is used to generate the detection gas of a preset pressure value, and the detection gas are injected into evaporator core；One pressure differential detection unit, the pressure differential detection unit is used to measure pressure value suffered in expansion core body, to obtain corresponding actual resistance value；Judging unit is leaked in blocking up in one, the interior stifled interior leakage judging unit is connected with the pressure differential detection unit, the interior stifled interior leakage judging unit is for actual resistance value to be compared with default Resistance Value, when actual resistance value is greater than default Resistance Value, then judging the evaporator core, there are interior stifled defects, when actual resistance value is less than default Resistance Value, then judging the evaporator core, there are interior bursts to fall into.
Description
Technical field
The present invention relates to air conditioning for automobiles component manufacturing technology fields more particularly to a kind of vehicle air-conditioner evaporator core to detect
Device and detection method.
Background technique
It is vital component that evaporator core, which is in automotive air-conditioning system, is had significantly to the refrigeration effect of air-conditioning
It influencing, it is easily evaporated under low pressure using liquid low temperature refrigerant, and it is changed into steam and absorbs the heat of cooled medium, thus
Reach refrigeration purpose.
During manufacturing or assembling evaporator core, the case where there are deficient purchases due to punching press components, in addition
The factors such as manual operation is variant, therefore evaporator core is easy to cause to make on the stations such as prepackage, group core, soldering and flame welding
At undesirable.Other than the defect of evaporator core in appearance is easier identification, inside certain evaporator cores
Defect be can not by visually identifying, such as evaporator core occur in stifled (because part failure welding causes) or interior leakage
(header punching press or hole size is bad cause), if the evaporator core in such case is assigned to general assembly station,
Also it detected without corresponding effective ways, therefore, be highly susceptible to the complaint of client or user.
In view of this, it is urgent to provide a kind of detection device or method, to solve the above problems.
Summary of the invention
To achieve the goals above, the present invention provides a kind of vehicle air-conditioner evaporator core detection device and detection method,
It in expansion core body by being filled with gas and judging the whether interior stifled or interior leakage of the evaporator core, to improve production efficiency
And product qualification rate, and largely reduce labor intensity.
The object of the present invention is to provide a kind of vehicle air-conditioner evaporator core detection devices comprising: a rack,
One evaporator core is set, and described device further comprises: a gas production unit, the gas on the work top of the rack
Body generates the detection gas that unit is used to generate a preset pressure value, and the detection gas are injected into evaporator core；One
Pressure differential detection unit, the pressure differential detection unit are used to measure pressure value suffered in expansion core body, corresponding to obtain
Actual resistance value；Judging unit is leaked in blocking up in one, the interior stifled interior leakage judging unit is connected with the pressure differential detection unit, described
Interior stifled interior leakage judging unit is for actual resistance value to be compared with default Resistance Value, when actual resistance value is greater than default resistance
When value, then judge that the evaporator core there are interior stifled defect, when actual resistance value is less than default Resistance Value, is then judged
There are interior bursts to fall into for the evaporator core.
In one embodiment of this invention, described device further include: a gas voltage regulation unit, the gas voltage regulation unit with
The gas production unit is connected, and the gas voltage regulation unit is used to generate the same of a detection gas when the gas production unit
When, pressure holding is carried out to detection gas caused by the gas production unit, so that being injected into the inspection of evaporator core
The pressure value for surveying gas remains preset pressure value.
In one embodiment of this invention, described device further include: a digital-to-analogue amplifying unit, the digital-to-analogue amplifying unit with
The pressure differential detection unit is connected, and the digital-to-analogue amplifying unit is used for the mould of the pressure differential detection unit pressure value obtained
Quasi- signal or digital signal amplify.
In one embodiment of this invention, described device further include: a data record unit, the data record unit with
The interior stifled interior leakage judging unit is connected, and the data record unit is used to record pressure value suffered in expansion core body,
So that subsequent quality analysis counts.
In one embodiment of this invention, described device a further include: Alarm Unit, the Alarm Unit and described interior stifled
Interior leakage judging unit is connected, and the Alarm Unit is used to deposit when the interior stifled interior disconnected unit judges of failing to judge go out the evaporator core
When blocking up defect or sunken interior burst inside, an alarm signal is generated.
In addition, the method is examined using above-mentioned vehicle air-conditioner evaporator core the present invention also provides a kind of detection method
Survey device, the described method comprises the following steps: (1) gas production unit generates the detection gas of a preset pressure value, and by institute
It states detection gas and is injected into evaporator core；(2) pressure value suffered in pressure differential detection unit measurement expansion core body, and obtain
Obtain actual resistance value；(3) actual resistance value is compared by leakage judging unit with default Resistance Value in blocking up in；(4) when practical resistance
When force value is greater than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge go out the evaporator core, and there are interior stifled defects, and terminate
The execution of step (4)；(5) when actual resistance value is less than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge go out the evaporation
There are interior bursts to fall into for device core.
In one embodiment of this invention, described device further comprises gas voltage regulation unit, in step (1) further
It include: while the gas production unit generates a detection gas, the gas voltage regulation unit generates the gas single
Detection gas caused by member carry out pressure holding, so that the pressure value for being injected into the detection gas of evaporator core remains
Preset pressure value.
In one embodiment of this invention, described device further comprises digital-to-analogue amplifying unit, in step (2) further
It include: that the digital-to-analogue amplifying unit carries out the analog signal or digital signal of the pressure differential detection unit pressure value obtained
Amplification.
In one embodiment of this invention, described device further comprises data record unit, after step (5), into
One step includes: pressure value suffered in the data record unit record expansion core body, so that subsequent quality analysis is united
Meter.
In one embodiment of this invention, described device further comprises Alarm Unit, among step (5), further
Include: when it is described it is interior it is stifled in fail to judge disconnected unit judges go out the evaporator core and fallen into there are interior stifled defect or interior burst when, it is described
Alarm Unit generates an alarm signal.
It is an advantage of the current invention that vehicle air-conditioner evaporator core detection device of the present invention passes through in evaporator core
It is inside filled with gas and judges the whether interior stifled or interior leakage of the evaporator core, so that production efficiency and product qualification rate are improved, and
Largely reduce labor intensity.In addition, by being connected with manufacturing execution system, and traced using planar bar code technology and with
The quality of track product.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of the vehicle air-conditioner evaporator core detection device in one embodiment of the invention.
Fig. 2 is the frame of the unit of the vehicle air-conditioner evaporator core detection device in embodiment of the present invention
Structure schematic diagram.
Fig. 3 A and Fig. 3 B are the structural schematic diagrams of the pressure differential detection unit in embodiment of the present invention.
Fig. 4 is that the detection method steps flow chart of the vehicle air-conditioner evaporator core detection device in one embodiment of the invention shows
It is intended to.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second ", " third " etc.
(if present) is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be appreciated that this
The object of sample description is interchangeable under appropriate circumstances.In addition, term " includes " and " having " and their any deformation, meaning
Figure, which is to cover, non-exclusive includes.
In patent document, the attached drawing that is discussed herein below and for describing each embodiment of principle disclosed by the invention only
For illustrating, and should not be construed as limiting the scope of the present disclosure.Those skilled in the art will appreciate that original of the invention
Reason can be implemented in any system suitably arranged.It will be explained in illustrative embodiments, these realities be shown in the attached drawings
The example for applying mode.In addition, terminal accoding to exemplary embodiment will be described in detail with reference to the attached drawings.Identical attached drawing mark in attached drawing
Number refer to identical element.
Term used in description of the invention is only used to describe particular implementation, and is not intended to show of the invention
Concept.Unless have clearly different meanings in context, it is otherwise, used in the singular to express the table for covering plural form
It reaches.In the description of the present invention, it should be appreciated that there are this hairs for the terms meant for illustration such as " comprising ", " having " and " containing "
A possibility that feature for being disclosed in bright specification, number, step, movement or combinations thereof, and be not intended to exclude may be present or can
A possibility that adding other one or more features, number, step, movement or combinations thereof.Same reference numerals in attached drawing refer to
For same section.
The embodiment of the present invention provides a kind of vehicle air-conditioner evaporator core detection device and detection method.Below will respectively into
Row is described in detail.
Referring to providing a kind of vehicle air-conditioner evaporator core detection device shown in Fig. 1 to Fig. 3 B, in one embodiment of the invention,
Comprising: which a rack 110, is arranged an evaporator core (not shown) on the work top 120 of the rack 110, wherein
Work top 120 is arranged in the enclosures body in the rack 110.
Described device further comprises: failing to judge in blocking up in a gas production unit 210, a pressure differential detection unit 230 and one
Disconnected unit 250.
Wherein, the gas production unit 210 is arranged in another cabinet body in the rack 110.The gas generates
Unit 210 is used to generate the detection gas of a preset pressure value, and the detection gas are injected into evaporator core.
In the present embodiment, described device can also include: a gas voltage regulation unit 220, the gas voltage regulation unit 220
It is connected with the gas production unit 210, the gas voltage regulation unit 220 is used to generate one when the gas production unit 210
While detection gas, pressure holding is carried out to detection gas caused by the gas production unit 210, so that being injected into
The pressure value of the detection gas of evaporator core remains preset pressure value, that is to say, that keep the detection gas for perseverance
Pressure.In the present embodiment, the detection gas are maintained between 450 to 550 pas.The detection gas are 4-8kg/cm2Completely
Oil-free compressed air.
Furthermore, the gas voltage regulation unit 220 can using pressure sensor (SMC) to detection gas (herein
Can be described as gas source) Two-stage control is carried out, the first order uses vacuum filter, and the second level uses precise pressure regulating valve, wherein the first order
Vacuum filter is used to the high pressure detection gas of pipeline being down to 3kg/cm2.Detection gas after two stage treatment carry out one
Air bag constant-voltage system, to guarantee the stabilization of detection gas and reliable.Wherein, the pressure bound in air bag constant-voltage system is automatic
Control, is provided simultaneously with overpressure protection function, avoids system overpressure in unexpected situations and damage.
With continued reference to shown in Fig. 1 to Fig. 3 B, the pressure differential detection unit 230 can be set another in the rack 110
In one cabinet body, the pressure differential detection unit 230 is used to measure pressure value suffered in expansion core body, corresponding real to obtain
Border Resistance Value.Wherein, the pressure differential detection unit 230 uses specific pressure sensor 231, and precision is high, can feel
The pressure difference variation for surveying 0.01 pa, has the characteristics that without drift and without lag.Meanwhile the pressure differential detection unit 230 has temperature
Automatic compensation function is adjusted by a temp control switch 234, without carrying out any repair within the scope of -20 DEG C to 60 DEG C
Just, and height correction can be carried out according to use environment difference.
In addition, the pressure differential detection unit 230 further includes a pressure reducing valve 232, the pressure reducing valve 232 is used for air bag constant pressure
Detection gas (such as nitrogen) in system are reduced to 500 pas or so, to control the gas output of the pressure differential detection unit.
The pressure differential detection unit 230 further includes a solenoid valve 233, and the solenoid valve 233 is for opening and closing gas
Pipeline.
The pressure differential detection unit 230 has good electro-magnetic screen function, reduces other electrical components to the maximum extent
Interference of the electromagnetic radiation to the pressure sensor, ensure the accuracy of testing result.
It is described it is interior it is stifled in leakage judging unit 250 be connected with the pressure differential detection unit 230, the interior stifled interior leakage judging unit
250 for actual resistance value to be compared with default Resistance Value, when actual resistance value is greater than default Resistance Value, is then judged
The evaporator core when actual resistance value is less than default Resistance Value, then judges the expansion core there are interior stifled defect
There are interior bursts to fall into for body.The interior stifled interior leakage judging unit 250 can detecte out the interior stifled of minimum sectional area 5%, or detect
0.2mm2Interior leakage.
In addition, in the present embodiment, described device further includes a digital-to-analogue amplifying unit 240.The digital-to-analogue amplifying unit 240
It is connected with the pressure differential detection unit 230, the digital-to-analogue amplifying unit 240 is for being obtained the pressure differential detection unit 230
The analog signal or digital signal of pressure value amplify.This way it is possible to avoid can not be compared because semaphore is small
Situation, to guarantee the accuracy and reliability of measurement.
In the present embodiment, described device further includes a data record unit 260.The data record unit 260 and institute
It states interior stifled interior leakage judging unit 250 to be connected, the data record unit 260 is used to record pressure suffered in expansion core body
Value, so that subsequent quality analysis counts.The data record unit 260 not only records pressure suffered in expansion core body
Value, while also can store other detection parameters.Described device can be carried out automatically controlling by industrial control computer, can be pre-
Store the test parameter of the product of unlimited number.In addition, what described device can be recorded according to the data record unit 260
Data information and per diem, week, moon statistic mixed-state product qualification rate.Described device also has data output interface, can be by this
The relevant computer equipment of a little digital output values, in case further analysis and inquiry.
In the present embodiment, described device further includes an Alarm Unit 270.The Alarm Unit 270 with it is described it is interior it is stifled in
Leakage judging unit 250 is connected, and the Alarm Unit 270 is used to judge the evaporation when the interior stifled interior leakage judging unit 250
When device core is fallen into there are interior stifled defect or interior burst, an alarm signal is generated.For example, when the evaporator core is qualified,
The display lamp bright green of Alarm Unit 270.When judging evaporator core is interior leakage, the display lamp azarin of Alarm Unit 270
Color, and the buzzer of Alarm Unit 270 has prompt tone.When it is interior stifled for judging evaporator core, the display of Alarm Unit 270
Lamp glassy yellow, and the buzzer of Alarm Unit 270 has prompt tone.
In addition, the method is examined using above-mentioned vehicle air-conditioner evaporator core the present invention also provides a kind of detection method
Survey device.
It is shown in Figure 4, it the described method comprises the following steps:
Step S410: gas production unit generates the detection gas of a preset pressure value, and the detection gas are injected
To evaporator core.
In this step, further comprise: described while the gas production unit 210 generates a detection gas
Gas voltage regulation unit 220 carries out pressure holding to detection gas caused by the gas production unit 210, so that being injected into
The pressure value of the detection gas of evaporator core remains preset pressure value.
That is, to keep the detection gas is constant pressure.In the present embodiment, the detection gas are maintained at 450
To between 550 pas.The detection gas are 4-8kg/cm2Clean oil-free compressed air.
Furthermore, the gas voltage regulation unit 220 (can claim detection gas using SMC pneumatic element herein
For gas source) Two-stage control is carried out, the first order uses vacuum filter, and the second level uses precise pressure regulating valve.After two stage treatment
Detection gas carry out an air bag constant-voltage system, to guarantee the stabilization of detection gas and reliable.Wherein, in air bag constant-voltage system
Pressure bound automatically control, be provided simultaneously with overpressure protection function, avoid system overpressure in unexpected situations and damage.
Step S420: pressure differential detection unit measures pressure value suffered in expansion core body, and obtains actual resistance value.
The pressure differential detection unit 230 is used to measure pressure value suffered in expansion core body, corresponding real to obtain
Border Resistance Value.Wherein, the pressure differential detection unit 230 uses specific pressure sensor, and precision is high, can sense
The pressure difference of 0.01 pa changes, and has the characteristics that be provided simultaneously with temperature self-compensation function, extremely at -20 DEG C without drift and without lag
Without carrying out any amendment within the scope of 60 DEG C, and height correction can be carried out according to use environment difference.In addition, the pressure passes
Sensor has good electro-magnetic screen function, reduces the electromagnetic radiation of other electrical components to the maximum extent to the pressure sensor
Interference, ensure the accuracy of testing result.
Further comprise in this step: the digital-to-analogue amplifying unit 240 is obtained by the pressure differential detection unit 230
The analog signal or digital signal of pressure value amplify.
Step S430: actual resistance value is compared by interior stifled interior leakage judging unit with default Resistance Value.
Step S440: when actual resistance value is greater than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge go out the evaporation
Device core is there are interior stifled defect, and the execution of end step S440.
Step S450: when actual resistance value is less than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge go out the evaporation
There are interior bursts to fall into for device core.
The interior stifled interior leakage judging unit 250 can detecte out the interior stifled of minimum sectional area 5%, or detect 0.2mm2's
Interior leakage.
In the present embodiment, among step S450, further comprise: when the interior stifled interior leakage judging unit 250 judges
When the evaporator core is fallen into there are interior stifled defect or interior burst out, the Alarm Unit 270 generates an alarm signal.
In addition, further comprising after step S450: the data record unit 260 records institute in expansion core body
The pressure value being subject to, so that subsequent quality analysis counts.The data record unit 260 not only records institute in expansion core body
The pressure value being subject to, while also can store other detection parameters.Described device can be carried out certainly by industrial control computer
Dynamic control, can the unlimited number of pre-stored product test parameter.In addition, described device can be according to the data record unit
260 recorded data information and per diem, week, moon statistic mixed-state product qualification rate.Also there is described device data output to connect
Mouthful, it can be by the relevant computer equipment of these digital output values, in case further analysis and inquiry.
Be provided for the embodiments of the invention above a kind of vehicle air-conditioner evaporator core detection device and detection method into
It has gone and has been discussed in detail.It should be understood that illustrative embodiments as described herein should be to be considered only as descriptive, it is used to help understand
Method and its core concept of the invention, and be not intended to restrict the invention.In each illustrative embodiments to feature or
The description of aspect should usually be considered the similar features or aspects suitable for other exemplary embodiments.Although reference example
Embodiment describes the present invention, but can suggest that those skilled in the art carries out various change and change.The invention is intended to contain
These variations and change in lid the scope of the appended claims.
Claims (10)
1. a kind of vehicle air-conditioner evaporator core detection device characterized by comprising a rack, in the work of the rack
One evaporator core is set on table top,
Described device further comprises:
One gas production unit, the gas production unit are used to generate the detection gas of a preset pressure value, and by the inspection
It surveys gas and is injected into evaporator core；
One pressure differential detection unit, the pressure differential detection unit are used to measure pressure value suffered in expansion core body, to obtain
Corresponding actual resistance value；
Leakage judging unit in blocking up in one, the interior stifled interior leakage judging unit is connected with the pressure differential detection unit, described interior stifled interior
Leakage judging unit is for actual resistance value to be compared with default Resistance Value, when actual resistance value is greater than default Resistance Value,
Then judging the evaporator core, there are interior stifled defects, when actual resistance value is less than default Resistance Value, then judge described
There are interior bursts to fall into for evaporator core.
2. the apparatus according to claim 1, which is characterized in that described device further include: a gas voltage regulation unit, the gas
Body voltage regulation unit is connected with the gas production unit, and the gas voltage regulation unit is used to generate one when the gas production unit
While detection gas, pressure holding is carried out to detection gas caused by the gas production unit, so that being injected into steaming
The pressure value for sending out the detection gas of device core remains preset pressure value.
3. the apparatus according to claim 1, which is characterized in that described device further include: a digital-to-analogue amplifying unit, the number
Mould amplifying unit is connected with the pressure differential detection unit, and the digital-to-analogue amplifying unit is for being obtained the pressure differential detection unit
The analog signal or digital signal of pressure value amplify.
4. the apparatus according to claim 1, which is characterized in that described device further include: a data record unit, the number
It is connected according to recording unit with the interior stifled interior leakage judging unit, the data record unit is suffered in expansion core body for recording
The pressure value arrived, so that subsequent quality analysis counts.
5. the apparatus according to claim 1, which is characterized in that described device further include: an Alarm Unit, the alarm are single
First to be connected with the interior stifled interior judging unit that leaks, the Alarm Unit is used for when the interior stifled interior disconnected unit judges of failing to judge are described out
When evaporator core is fallen into there are interior stifled defect or interior burst, an alarm signal is generated.
6. a kind of detection method using vehicle air-conditioner evaporator core detection device described in claim 1, which is characterized in that
The following steps are included:
(1) gas production unit generates the detection gas of a preset pressure value, and the detection gas are injected into expansion core
Body；
(2) pressure value suffered in pressure differential detection unit measurement expansion core body, and obtain corresponding actual resistance value；
(3) actual resistance value is compared by leakage judging unit with default Resistance Value in blocking up in；
(4) when actual resistance value is greater than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge, which go out the evaporator core, to be existed
Interior stifled defect, and the execution of end step (4)；
(5) when actual resistance value is less than default Resistance Value, interior stifled interior disconnected unit judges of failing to judge, which go out the evaporator core, to be existed
Interior burst is fallen into.
7. detection method according to claim 6, described device further comprises gas voltage regulation unit, which is characterized in that
Further comprise in step (1): while the gas production unit generates a detection gas, the gas voltage regulation unit
Pressure holding is carried out to detection gas caused by the gas production unit, so that being injected into the detection gas of evaporator core
The pressure value of body remains preset pressure value.
8. detection method according to claim 6, described device further comprises digital-to-analogue amplifying unit, which is characterized in that
Further comprise in step (2):
The digital-to-analogue amplifying unit carries out the analog signal or digital signal of the pressure differential detection unit pressure value obtained
Amplification.
9. detection method according to claim 6, described device further comprises data record unit, which is characterized in that
After step (5), further comprise:
Suffered pressure value in the data record unit record expansion core body, so that subsequent quality analysis counts.
10. detection method according to claim 6, described device further comprises Alarm Unit, which is characterized in that in step
Suddenly among (5), further comprise:
When the interior stifled interior disconnected unit judges of failing to judge, which go out the evaporator core, to be fallen into there are interior stifled defect or interior burst, the announcement
Alert unit generates an alarm signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811507978.1A CN109406068A (en) | 2018-12-11 | 2018-12-11 | Vehicle air-conditioner evaporator core detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811507978.1A CN109406068A (en) | 2018-12-11 | 2018-12-11 | Vehicle air-conditioner evaporator core detection device and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274730A (en) * | 2019-07-02 | 2019-09-24 | 浙江国祥股份有限公司 | A kind of air-conditioning air tight test device |
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