CN108896251A - A kind of refrigerator door seal air-tightness detection device and method - Google Patents
A kind of refrigerator door seal air-tightness detection device and method Download PDFInfo
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- CN108896251A CN108896251A CN201810460971.2A CN201810460971A CN108896251A CN 108896251 A CN108896251 A CN 108896251A CN 201810460971 A CN201810460971 A CN 201810460971A CN 108896251 A CN108896251 A CN 108896251A
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- refrigerator
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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
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Abstract
The present invention discloses a kind of refrigerator door seal air-tightness detection device and method, detection device includes air compressor machine, pressure regulator, flowmeter, appendix, refrigerator, door seal, pressure detecting probe and differential manometer, air compressor machine pressure regulator flowmeter refrigerator is sequentially connected by appendix, refrigerator has drainpipe door liner, pressure detecting probe is connect with flowmeter differential manometer refrigerator drainpipe respectively there are three port, and differential manometer one end is freely opened wide.Detection method is：Door seal be mounted in refrigerator door liner close after around it is seamless, it is powered off after refrigerator operation 2h at room temperature, calibrating meter flowmeter, detection device connecting portion is coated with suds, it closes pressure regulator and opens air compressor machine, slow rotational pressure adjuster, monitoring flowmeter, which reaches, stablizes setting value, bubble-free at suds, starting differential pressure meter are read after stablizing.Detection accuracy high accuracy of the present invention is high, and no destructive procedure is simply at low cost, being capable of quantitative assessment refrigerator door envelope leakproofness.
Description
Technical field
The present invention relates to door seal air-tightness detection device technology and technique application fields, particularly belong to a kind of refrigerator door seal
Air-tightness detection device and method.
Background technique
Refrigerator door seal is mainly risen for realizing a kind of refrigerator accessory sealed between refrigerator door body and cabinet
To sealing, the effect of anti-cold draining.If door seal is poorly sealed, refrigerator cold draining can be made serious, air in refrigerator cabinet
Set temperature is not achieved in temperature, will lead to the compressor high load capacity long time running on refrigerator.It will cause refrigerator in this way
Energy consumption index is unqualified, shortens compressor service life, accelerates the consumption of refrigerant in refrigerator.In addition, if refrigerator door
It is not tight to seal long term seal, so that caloic exchange frequently, will lead to and condensation occurs even at refrigerator door seal leakage inside and outside refrigerator
Icing failure.Therefore the air-tightness of refrigerator door seal manufactures always the highest attention of manufacturer by refrigerator.
Current GB/T 8059-2016《Household and similar applications refrigerating appliance》Using holding paper method and luminescence method detection refrigeration
The leakproofness air-tightness of device door seal.Both methods all existing defects：1, paper has an one fixed width in holding paper method, and refrigerator
Door seal and cabinet contact gap can not have so wide, be furthermore fixedly connected between refrigerator door seal and door liner by card slot, nothing
Method detects the air-tightness between refrigerator door seal and door liner using holding paper method；2, the light in luminescence method is straightline propagation, and is made
At Ω shape, light can not be bent and pass through, therefore airtight between refrigerator door seal and door liner for cooler door seal and door liner contact site
Property detection, luminescence method cannot be used.
Publication number CN103926043B discloses door seal device for detecting sealability and method is first to make a specific cabinet by oneself
With corresponding capping, two holes are then drilled through on cabinet, a hole is passed through helium, another hole merging Concentration Testing probe, last basis
Concentrations of helium attenuation degree evaluates door seal leakproofness, this detection device and method have the following defects：1, this detection method tool
There is destructiveness, refrigerator detection on the spot can not be in punchinging on cabinet, and anyway hole seals with the gap for being placed in object surrounding,
All there is certain leak path, thus there are deviations for test result；2, this detection device has one-sidedness, refrigerator door seal
Leakproofness is a system problem, depends not only on the sole mass of door seal, also relies on door seal, door liner, between cabinet three
Matching.In addition it if simulating refrigerator cabinet and door body with capping using the self-control cabinet in CN103926043B, advises
Kept away refrigerator door liner and refrigerator cabinet molding after size complexity, substantial deviation actual service conditions, not meeting actually makes
Use situation.That is the door seal of leakproofness air-tightness qualification is detected by the apparatus and method that CN103926043B is provided, one
Denier is assembled in refrigerator door body in use, the door seal of the leakproofness air-tightness qualification is also not necessarily qualified in actual use.
Summary of the invention
It is an object of the present invention to provide a kind of refrigerator door seal air-tightness detection device and methods, can solve above-mentioned background technique
In the problem of mentioning.
The technical solution adopted in the present invention is as follows：
A kind of refrigerator door seal air-tightness detection device, the detection device include air compressor machine, pressure regulator, flow
Meter, appendix, refrigerator, door seal, pressure detecting probe and differential manometer, air compressor machine are connect by appendix with pressure regulator,
Pressure regulator is connect by appendix with flowmeter, and flowmeter is connect by appendix with refrigerator, and the refrigerator is ice
The refrigerating plant that case refrigerator class can freeze, refrigerator have drainpipe, door seal, door liner, refrigerator door, refrigerator interior room, refrigeration
Device door is connect with refrigerator interior room, and door liner is mounted on refrigerator door, and door seal is mounted in refrigerator door liner, drainpipe and refrigeration
The connection of device interior room, the pressure detecting probe generally T-type, pressure detecting probe have the port A, the port B and C port, and the port A is logical
It crosses appendix to connect with flowmeter, the port B is connect by appendix with differential manometer one end, and sheath, C-terminal are equipped with outside C port
Mouth is internal capillary, and the sheath capillary of the pressure detecting probe C port is inserted into refrigerator drainpipe, and capillary is whole
Curved shape length matches with refrigerator drainpipe, it is desirable that the end of capillary can be inserted into refrigerator interior room, the pressure difference
One end of meter is freely opened wide, and the other end of differential manometer is connected by appendix and pressure detecting probe.
Preferably, the volume of the air compressor machine is 18L, and the power of air compressor machine is 550W, and the capacity of air compressor machine is 40L/
Min, the pressure at expulsion setting range of air compressor machine are 0.4MPa~0.7MPa.
Preferably, the pressure regulator is mounted on the export pipeline of air compressor machine, pressure regulator by appendix with
Air compressor machine connection, the pressure regulation spectrum of pressure regulator are 0MPa~1MPa.
Preferably, the flowmeter is located at pressure regulator rear end, and flowmeter is connect by appendix with pressure regulator,
The flow tolerance range of flowmeter is 0L/min~20L/min.
Preferably, the sheath of the pressure detecting probe C port installation connection has soft modeling elastic-like material to be made, sheath
Length is greater than 50mm, and the inner and outer diameter of sheath is common by the diameter of pressure detecting probe C port and the diameter of refrigerator drainpipe
It determines, realizes sheath and pressure detecting probe C port, be tightly connected between sheath and refrigerator drainpipe three, pressure detecting
There is capillary inside probe C port, capillary has copper material to be made, and the outer diameter of capillary is 0.8mm~1.5mm, capillary
Length be greater than 80mm, the curved shape and length of capillary have refrigerator draining tube shape length determine, realize capillary
End is inserted into refrigerator interior room, and the stable gas pressure of refrigerator interior room is transmitted on differential manometer, not by pressure detection probe A
The interference of port delivery air.
Preferably, one end of the differential manometer is freely opened wide, and the other end of differential manometer is visited by appendix and pressure detecting
The connection of the head port B, realizes and examines pressure difference numerical value between measurement refrigerator interior room air pressure and external atmosphere pressure, the range of differential manometer
For 0hpa~100hpa, the minimum resolution of differential manometer is 0.01hpa.
Preferably, appendix used in each connecting portion has same material or non-same material system in the detection device
At realization air compressor machine and pressure regulator, pressure regulator and flowmeter, flowmeter and pressure detecting are popped one's head in, and pressure detecting is visited
Head is connected with each other the tight seamless connection at position with differential manometer.
Using a kind of above-mentioned method that refrigerator door seal air-tightness detection device is detected, include the following steps：
Step 1：Door seal to be detected is made according to the correspondingly-sized that refrigerator needs, and door seal is mounted in refrigerator door liner,
The refrigerator door for closing refrigerator checks whether have the gap around door seal, it is desirable that ensures tight seamless around door seal；
Step 2：Refrigerator be integrally placed under room temperature the duration be greater than 12h, then refrigerator be powered operation when
Between be greater than 2h after power off；
Step 3：According to the operation instructions of differential manometer and flowmeter, calibrating meter and flowmeter；
Step 4：Pressure detecting probe C port sheath capillary is inserted into refrigerator drainpipe, it is ensured that sheath and pressure detecting
Probe C port, the connecting portion between sheath and refrigerator drainpipe three is tightly seamless, while in pressure detecting probe C
Suds are uniformly coated between port, sheath and refrigerator drainpipe three around connecting portion；
Step 5：Air compressor machine and pressure regulator, pressure regulator and flowmeter, flowmeter and pressure detecting are popped one's head in, pressure
It is connected in turn between power detection probe and differential manometer with appendix, it is ensured that connecting portion is tightly seamless, while connecting
Suds are uniformly coated with around position；
Step 6：Pressure regulator is closed, air compressor machine is opened；
Step 7：According to the setting flow value of the volume settings flowmeter of refrigerator interior room, slow rotational pressure adjuster,
It monitors the variation of meter readings, until reaching and maintaining the flow value of setting, pays attention to observation refrigerator door in the process
The suds coated around envelope each connecting portion of air-tightness detection device, if having bubble generation, it is desirable that around each connecting portion
The suds bubble-free of coating generates；
Step 8：Starting differential pressure meter, monitoring differential manometer reading are recorded stablizing on differential manometer and are read until stablizing
Number；
Step 9：Reading value will be stablized on differential manometer to compare with predetermined leakage standard value, if the pressure difference recorded
It counts and stablizes reading value less than predetermined leakage standard value, then judge that the leakproofness for installing door seal in refrigerator door liner is unqualified, otherwise
It is qualified.
Compared with the prior art, beneficial effects of the present invention are as follows：
Compared with the prior art, the present invention is able to solve the problem of mentioning in above-mentioned background technique.Beneficial effect of the invention
Fruit is, more conventionally employed holding paper method and light leakage legal system cooler door seal leakproofness air-tightness detection method, detection accuracy of the present invention
Height, accuracy of measurement is high, is capable of the degree of quantitative assessment refrigerator door envelope leakproofness air-tightness quality.Compared with publication number
Helium concentration door seal sealing propertytest used in door seal device for detecting sealability and method disclosed in CN103926043B, the present invention
Without destructiveness, and be to refrigerator complete machine being sealed property air-leakage test, testing result it is with a high credibility, while with
Refrigerator door seal actual service conditions situation is identical, easy to operate at low cost.
Detailed description of the invention
Fig. 1 is refrigerator door seal air-tightness detection device schematic diagram in the present invention；
Fig. 2 is the longitudinal sectional view of pressure detecting probe in detection device of the present invention.
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, it is clear that 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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment belongs to the range of invention protection.
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.
Referring to attached drawing, a kind of refrigerator door seal air-tightness detection device, the detection device includes air compressor machine (6), pressure
Adjuster (5), flowmeter (4), appendix (3), refrigerator (2), door seal (1), pressure detecting probe (8) and differential manometer (7), it is empty
Press (6) is connect by appendix (3) with pressure regulator (5), and pressure regulator (5) passes through appendix (3) and flowmeter (4)
Connection, flowmeter (4) are connect by appendix (3) with refrigerator (2), and the refrigerator (2) is that refrigerator class can freeze
Refrigerating plant, refrigerator (2) has drainpipe, door seal (1), door liner, a refrigerator door, refrigerator interior room, refrigerator door and refrigeration
The connection of device (2) interior room, door liner are mounted on refrigerator door, and door seal (1) is mounted in refrigerator door liner, drainpipe and refrigerator
(2) interior room is connected to, and the pressure detecting probe (8) generally T-type, pressure detecting probe (8) has the port A, the port B and C port,
The port A is connect by appendix (3) with flowmeter (4), and the port B is connect by appendix (3) with differential manometer (7) one end, C port
Outside is equipped with sheath (801), is had inside C port capillary (802), the sheath of described pressure detecting probe (8) C port
(801) in capillary (802) insertion refrigerator (2) drainpipe, capillary (802) integrally bending shape length and refrigerator (2)
Drainpipe matches, it is desirable that the end of capillary (802) can be inserted into refrigerator (2) interior room, and one end of the differential manometer (7) is certainly
By opening wide, the other end of differential manometer (7) is connect by appendix (3) with pressure detecting probe (8).
The volume of the air compressor machine (6) is 18L, and the power of air compressor machine (6) is 550W, and the capacity of air compressor machine (6) is
40L/min, the pressure at expulsion setting range of air compressor machine (6) are 0.4MPa~0.7MPa.
The pressure regulator (5) is mounted on the export pipeline of air compressor machine (6), and pressure regulator (5) passes through appendix
(3) it is connect with air compressor machine (6), the pressure regulation spectrum of pressure regulator (5) is 0MPa~1MPa.
The flowmeter (4) is located at pressure regulator (5) rear end, and flowmeter (4) passes through appendix (3) and pressure regulator
(5) it connects, the flow tolerance range of flowmeter (4) is 0L/min~20L/min.
The sheath (801) of pressure detecting probe (8) the C port installation connection has soft modeling elastic-like material to be made, sheath
(801) length is greater than 50mm, the inner and outer diameter of sheath (801) by pressure detecting probe (8) C port diameter and refrigerator
(2) diameter of drainpipe determines jointly, realizes sheath (801) and pressure detecting probe (8) C port, sheath (801) and refrigerator
(2) it is tightly connected, has capillary (802) inside pressure detecting probe (8) C port, capillary (802) has between drainpipe three
Copper material is made, and the outer diameter of capillary (802) is 0.8mm~1.5mm, and the length of capillary (802) is greater than 80mm, capillary
(802) curved shape and length has refrigerator (2) draining tube shape length to determine, realizes the end insertion of capillary (802)
Into refrigerator (2) interior room, the stable gas pressure of refrigerator (2) interior room is transmitted on differential manometer (7), not by pressure detection probe
(8) interference of the port A delivery air.
One end of the differential manometer (7) is freely opened wide, and the other end of differential manometer (7) passes through appendix (3) and pressure detecting
The connection of probe (8) port B, realizes and examines pressure difference numerical value between measurement refrigerator (2) interior room air pressure and external atmosphere pressure, pressure difference
The range for counting (7) is 0hpa~100hpa, and the minimum resolution of differential manometer (7) is 0.01hpa.
Appendix used in each connecting portion (3) has same material or non-same material to be made in the detection device,
It realizes air compressor machine (6) and pressure regulator (5), pressure regulator (5) and flowmeter (4), flowmeter (4) and pressure detecting are popped one's head in
(8), pressure detecting probe (8) and differential manometer (7) is connected with each other the tight seamless connection at position.
Using a kind of above-mentioned method that refrigerator door seal air-tightness detection device is detected, include the following steps：
Step 1：Door seal (1) to be detected is made according to the correspondingly-sized that refrigerator (2) needs, and door seal (1) is mounted on refrigeration
In device door liner, the refrigerator door for closing refrigerator (2) checks whether have the gap around door seal (1), it is desirable that ensures around door seal (1)
It is tight seamless；
Step 2：Refrigerator (2) is integrally placed in the duration under room temperature, and greater than 12h, then refrigerator (2) is powered
Runing time powers off after being greater than 2h；
Step 3：According to the operation instructions of differential manometer (7) and flowmeter (4), calibrating meter (7) and flowmeter (4)；
Step 4：Pressure detecting probe (8) C port sheath (801) capillary (802) is inserted into refrigerator (2) drainpipe, really
Protective case (801) and pressure detecting probe (8) C port, the interconnecting piece between sheath (801) and refrigerator (2) drainpipe three
Position is tight seamless, while popping one's head in pressure detecting and connecting between (8) C port, sheath (801) and refrigerator (2) drainpipe three
Suds are uniformly coated with around socket part position；
Step 5：Air compressor machine (6) and pressure regulator (5), pressure regulator (5) and flowmeter (4), flowmeter (4) with
Pressure detecting is popped one's head in (8), is connected in turn between pressure detecting probe (8) and differential manometer (7) with appendix (3), it is ensured that even
Socket part position is tightly seamless, while suds are uniformly coated with around connecting portion；
Step 6：It closes pressure regulator (5), opens air compressor machine (6)；
Step 7：According to the setting flow value of the volume settings flowmeter of refrigerator (2) interior room, slow rotational pressure is adjusted
Device (5), the variation of monitoring flowmeter (4) reading pay attention to observation until reaching and maintaining the flow value of setting in the process
The suds coated around each connecting portion of refrigerator (2) door seal (1) air-tightness detection device, if having bubble generation, it is desirable that
The suds bubble-free coated around each connecting portion generates；
Step 8：Starting differential pressure meter (7), monitoring differential manometer (7) reading are recorded on differential manometer (7) until stablizing
Stablize reading；
Step 9：Reading value will be stablized on differential manometer (7) to compare with predetermined leakage standard value, if the pressure recorded
Difference meter (7) stablizes reading value and is less than predetermined leakage standard value, then judges that the leakproofness that door seal (1) is installed in refrigerator door liner does not conform to
Lattice are otherwise qualified.
It include status adjustment when actual use refrigerator door seal air-tightness detection device is detected：By refrigerator (2)
After assembling door seal (1), standing time is greater than 12 hours at room temperature, and refrigerator (2), which is powered again after operation is greater than 2 hours, to break
Electricity is realized and is eliminated to the moulding stress of refrigerator (2) door seal (1)；In the detection process, by air compressor machine (6) to refrigerator (2)
A certain amount of air is injected in interior room, the air capacity of injection depending on refrigerator (2) interior room volume, usually with refrigerator (2)
Interior room volume is equal.By pressure detecting probe (8) and differential manometer (7), refrigerator (2) interior room and laboratory ambient atmosphere are measured
Between pressure difference, if pressure difference be less than predetermined leakage standard, judge that the leakproofness of the door seal (1) is unqualified.
The beneficial effects of the present invention are more conventionally employed holding paper method and light leakage method refrigerator (2) door seal (1) leakproofness gas
Close property detection method, detection accuracy of the present invention is high, and accuracy of measurement is high, being capable of quantitative assessment refrigerator (2) door seal (1) leakproofness
The degree of air-tightness quality.Compared with helium used in door seal device for detecting sealability disclosed in publication number CN103926043B and method
Concentration door seal (1) sealing propertytest, the present invention do not have destructiveness, and are airtight to being sealed property of refrigerator (2) complete machine
Property detection, testing result it is with a high credibility while identical as refrigerator (2) door seal (1) actual service conditions situation, it is easy to operate
It is at low cost.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (8)
1. a kind of refrigerator door seal air-tightness detection device, the detection device include air compressor machine, pressure regulator, flowmeter,
Appendix, refrigerator, door seal, pressure detecting probe and differential manometer, air compressor machine are connect by appendix with pressure regulator, pressure
Adjuster is connect by appendix with flowmeter, and flowmeter is connect by appendix with refrigerator, and the refrigerator is that refrigerator is cold
The refrigerating plant that cabinet class can freeze, refrigerator have drainpipe, door seal, door liner, refrigerator door, refrigerator interior room, refrigerator door
It is connect with refrigerator interior room, door liner is mounted on refrigerator door, and door seal is mounted in refrigerator door liner, in drainpipe and refrigerator
Room connection, the pressure detecting probe generally T-type, pressure detecting probe have the port A, the port B and C port, and the port A passes through defeated
Tracheae is connect with flowmeter, and the port B is connect by appendix with differential manometer one end, is equipped with sheath outside C port, in C port
There is capillary in portion, and the sheath capillary of the pressure detecting probe C port is inserted into refrigerator drainpipe, capillary integrally bending
Shape length matches with refrigerator drainpipe, it is desirable that the end of capillary can be inserted into refrigerator interior room, the differential manometer
One end is freely opened wide, and the other end of differential manometer is connected by appendix and pressure detecting probe.
2. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the air compressor machine
Volume is 18L, and the power of air compressor machine is 550W, and the capacity of air compressor machine is 40L/min, the pressure at expulsion setting range of air compressor machine
For 0.4MPa~0.7MPa.
3. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the pressure is adjusted
Device is mounted on the export pipeline of air compressor machine, and pressure regulator is connect by appendix with air compressor machine, the pressure of pressure regulator
Adjustable range is 0MPa~1MPa.
4. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the flowmeter position
In pressure regulator rear end, flowmeter is connect by appendix with pressure regulator, and the flow tolerance range of flowmeter is 0L/
Min~20L/min.
5. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the pressure detecting
The sheath of probe C port installation connection has soft modeling elastic-like material to be made, and the length of sheath is greater than 50mm, the inner and outer diameter of sheath
It is determined jointly by the diameter of pressure detecting probe C port and the diameter of refrigerator drainpipe, realizes sheath and pressure detecting probe C
Port is tightly connected between sheath and refrigerator drainpipe three, has capillary, capillary inside pressure detecting probe C port
There is copper material to be made, the outer diameter of capillary is 0.8mm~1.5mm, and the length of capillary is greater than 80mm, the Curved of capillary
Shape and length have refrigerator draining tube shape length to determine, realize that the end of capillary is inserted into refrigerator interior room, will freeze
The stable gas pressure of device interior room is transmitted on differential manometer, not by the interference of the port pressure detection probe A delivery air.
6. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the differential manometer
One end is freely opened wide, and the other end of differential manometer is connect by appendix with pressure detecting probe B port, is realized and is examined measurement refrigeration
Pressure difference numerical value between the air pressure of device interior room and external atmosphere pressure, the range of differential manometer are 0hpa~100hpa, the minimum of differential manometer
Resolution ratio is 0.01hpa.
7. a kind of refrigerator door seal air-tightness detection device according to claim 1, it is characterised in that the detection device
In appendix used in each connecting portion there is same material or non-same material to be made, realize air compressor machine and pressure regulator,
Pressure regulator and flowmeter, flowmeter and pressure detecting are popped one's head in, and pressure detecting probe is connected with each other the tight of position with differential manometer
Close seamless connection.
8. using a kind of any one of claim 1~7 method that refrigerator door seal air-tightness detection device is detected,
It is characterized in that, includes the following steps：
Step 1：Door seal to be detected is made according to the correspondingly-sized that refrigerator needs, and door seal is mounted in refrigerator door liner, closes
The refrigerator door of refrigerator checks whether have the gap around door seal, it is desirable that ensures tight seamless around door seal；
Step 2：Refrigerator is integrally placed in the duration under room temperature, and greater than 12h, then refrigerator energization runing time is big
It is powered off after 2h；
Step 3：According to the operation instructions of differential manometer and flowmeter, calibrating meter and flowmeter；
Step 4：Pressure detecting probe C port sheath capillary is inserted into refrigerator drainpipe, it is ensured that sheath and pressure detecting are popped one's head in
C port, the connecting portion between sheath and refrigerator drainpipe three is tightly seamless, at the same pressure detecting pop one's head in C port,
Suds are uniformly coated between sheath and refrigerator drainpipe three around connecting portion；
Step 5：Air compressor machine and pressure regulator, pressure regulator and flowmeter, flowmeter and pressure detecting are popped one's head in, pressure inspection
It is connected in turn between probing head and differential manometer with appendix, it is ensured that connecting portion is tightly seamless, while in connecting portion
Around uniformly be coated with suds；
Step 6：Pressure regulator is closed, air compressor machine is opened；
Step 7：According to the setting flow value of the volume settings flowmeter of refrigerator interior room, slow rotational pressure adjuster, monitoring
The variation of meter readings pays attention to observation refrigerator door seal gas until reaching and maintaining the flow value of setting in the process
The suds coated around each connecting portion of close property detection device, if having bubble generation, it is desirable that coat around each connecting portion
Suds bubble-free generate；
Step 8：Starting differential pressure meter, monitoring differential manometer reading are recorded until stablizing and stablize reading on differential manometer；
Step 9：Reading value will be stablized on differential manometer to compare with predetermined leakage standard value, if the differential manometer recorded is steady
Determine reading value and be less than predetermined leakage standard value, then judges that the leakproofness for installing door seal in refrigerator door liner is unqualified, it is otherwise qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460971.2A CN108896251B (en) | 2018-05-15 | 2018-05-15 | refrigerator door seal air tightness detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460971.2A CN108896251B (en) | 2018-05-15 | 2018-05-15 | refrigerator door seal air tightness detection device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108896251A true CN108896251A (en) | 2018-11-27 |
| CN108896251B CN108896251B (en) | 2019-12-17 |
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ID=64343887
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810460971.2A Active CN108896251B (en) | 2018-05-15 | 2018-05-15 | refrigerator door seal air tightness detection device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238746A (en) * | 2020-02-18 | 2020-06-05 | 青岛海尔电冰箱有限公司 | Method, equipment and medium for detecting sealing performance of refrigerator |
| CN111678656A (en) * | 2020-06-05 | 2020-09-18 | 哈尔滨锅炉厂有限责任公司 | Sealing detection method of multi-pass heat exchanger |
| CN114450571A (en) * | 2019-10-04 | 2022-05-06 | 三菱电机株式会社 | Airtightness evaluation device |
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