CN101793614A - Automobile air conditioning evaporator pressure alternation resistance test bed - Google Patents
Automobile air conditioning evaporator pressure alternation resistance test bed Download PDFInfo
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- CN101793614A CN101793614A CN201010103527A CN201010103527A CN101793614A CN 101793614 A CN101793614 A CN 101793614A CN 201010103527 A CN201010103527 A CN 201010103527A CN 201010103527 A CN201010103527 A CN 201010103527A CN 101793614 A CN101793614 A CN 101793614A
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- solenoid valve
- time relay
- way solenoid
- automobile air
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Abstract
The invention discloses an automobile air conditioning evaporator pressure alternation resistance test bed comprising an air switch, a time relay, a solenoid valve, an AC contactor, a counter, a low-pressure filter reducing valve, a high-pressure filter reducing valve and the like, wherein the time relay is used for controlling solenoid valve commutating period and controlling the switching-on state and the switching-off state of the normally open contact of the AC contactor, the low-pressure filter reducing valve fills specified low-pressure air into a tested evaporator, and the high-pressure filter reducing valve fills specified high-pressure air into the tested evaporator. The invention is used for checking the automobile air conditioning evaporator pressure alternation resistance performance.
Description
Technical field
The invention belongs to the proving installation technical field, be specifically related to a kind of automobile air conditioning evaporator pressure alternation resistance test bed.
Background technology
According to the requirement to automobile air-conditioning evaporator, automobile air-conditioning evaporator will carry out the pressure alternation resistance test, does not also have this testing equipment at present, can not carry out the pressure alternation resistance test to automobile air-conditioning evaporator.
Summary of the invention
For overcoming the above-mentioned problems in the prior art, the invention provides a kind of automobile air conditioning evaporator pressure alternation resistance test bedly, this testing table is by hardware controls, cost is low, easy to operate, easy-maintaining.
Technical scheme of the present invention:
A kind of automobile air conditioning evaporator pressure alternation resistance test bed, this device comprises air switch 6, the time relay, two-position-five-way solenoid valve, A.C. contactor, counter, low pressure filtering pressure reducing valve and high-pressure filteration reduction valve;
The inlet of described two-position-five-way solenoid valve connects high-pressure air pipe, first of two-position-five-way solenoid valve exports the upper orifice gas joint that is connected to described automobile air-conditioning evaporator by low pressure filtering pressure reducing valve and threeway, and second outlet of this two-position-five-way solenoid valve is connected to the upper orifice gas joint of described automobile air-conditioning evaporator by high-pressure filteration reduction valve and threeway;
Described two-position-five-way solenoid valve solenoid is connected to AC power by the described time relay and air switch, control the energising of described two-position-five-way solenoid valve solenoid by the described time relay, thereby the commutation of control two-position-five-way solenoid valve, promptly control the conducting of two-position-five-way solenoid valve first outlet and second outlet and closing;
The two ends of described ac contactor coil are connected to AC power by the described time relay and air switch, and the two ends of the normally opened contact of described A.C. contactor are connected to described counter.
When the normally opened contact of the described time relay disconnects, the solenoid no power of described two-position-five-way solenoid valve, the first outlet conducting of this two-position-five-way solenoid valve, second port closing makes the gas of high-pressure air pipe enter the upper orifice gas joint of described automobile air-conditioning evaporator by described low pressure filtering pressure reducing valve; When the normally opened contact of time relay is closed, the solenoid energising of described two-position-five-way solenoid valve, the second outlet conducting of this two-position-five-way solenoid valve, first port closing, make the gas of high-pressure air pipe enter the upper orifice gas joint of described automobile air-conditioning evaporator by described high-pressure filteration reduction valve, ac contactor coil energising simultaneously, its normally opened contact closure, the counter stored count is once.
Described air switch is used to control the energising and the outage of AC power;
The described time relay is used for the time control to the solenoid valve commutation;
The described time relay is used for the normally opened contact closure state and the off-state of A.C. contactor are controlled;
Described solenoid valve is used for gas path on-off control switching time to the high and low pressure filtering pressure reducing valve;
Described A.C. contactor is used for counter is carried out stored count control;
Described counter carries out stored count to test;
Described low pressure filtering pressure reducing valve is that the evaporator of being tested injects the low-pressure gas of stipulating;
Described high-pressure filteration reduction valve is that the evaporator of being tested injects the gases at high pressure of stipulating.
Effect of the present invention: adopt invented automobile air conditioning evaporator pressure alternation resistance test bed, solved and do not had the problem that this testing equipment can not be done the pressure alternation resistance test to automobile air-conditioning evaporator, can examine the pressure alternation resistance energy of automobile air-conditioning evaporator, simple in structure, easy to manufacture, Operation and maintenance convenience are applicable to the automobile that automobile air-conditioning evaporator is housed.
Description of drawings
The automobile air conditioning evaporator pressure alternation resistance test bed structural drawing of Fig. 1;
The automobile air conditioning evaporator pressure alternation resistance test bed schematic diagram of Fig. 2.
Embodiment
Fig. 1 is automobile air conditioning evaporator pressure alternation resistance test bed structural drawing, and this device comprises low pressure filtering pressure reducing valve 1, two-position-five-way solenoid valve 3, two-position-five-way solenoid valve draft tube 4, the time relay 5, air switch 6, A.C. contactor 7, counter 9, high-pressure filteration reduction valve 10, threeway 11 and connects evaporator upper orifice gas joint 12 etc.With tracheae 2 low pressure filtering pressure reducing valve 1, two-position-five-way solenoid valve 3, two-position-five-way solenoid valve draft tube 4, high-pressure filteration reduction valve 10, threeway 11 and evaporator upper orifice gas joint 12 are coupled together by the connected mode among Fig. 1; With power lead 8 two-position-five-way solenoid valve 3, the time relay 5, air switch 6, A.C. contactor 7 sum counters are electrically connected.
The time relay of the present invention is in order to the commutating period of control electromagnetic valve, it is the HHS6R cycle time relay, the a pair of normally opened contact and a pair of normally closed contact of the time relay are interlockings, as being set to S1 and S2 cycling time, when the time relay is worked, the normally opened contact of the time relay is outage S1 (the normally closed contact energising S1 of the time relay) earlier, is recycled to the normally opened contact energising S2 (the normally closed contact outage S2 of the time relay) of the time relay then;
Solenoid valve of the present invention is a two-position-five-way solenoid valve, in order to switch the gas circuit of leading to low pressure filtering pressure reducing valve or high-pressure filteration reduction valve;
The low pressure test (LPT) air pressure that low pressure filtering pressure reducing valve of the present invention is stipulated to the evaporator input:
The high-potting air pressure that high-pressure filteration reduction valve of the present invention is stipulated to the evaporator input:
The present invention the A.C. contactor control counter counting that adopted;
The present invention the in test stored count of counter adopted;
Air switch of the present invention is used for controlling the break-make of AC power.
According to testing requirements, evaporator core is fixed, to core body inner fills with water, plenum again.Earlier pressure is risen to 3.5kPa, be pressurized to 1500kPa then, reduce to 3.5kPa again, rise to 1500kPa again.So go round and begin again.The frequency of pressure lifting is 19 times ± 1 time/min.Carry out 50000 circulations altogether.Check the structure and the impermeability of evaporator core after the off-test
Before the test, the evaporator lower end mouth of pipe of being tested is blocked with plug 14, from the evaporator upper orifice to the inner fills with water of evaporator core, using pipe gas joint 12 couples together automobile evaporator pressure alternation resistance test bed threeway 11 and evaporator upper orifice, the high pressure gas interface of solenoid valve draft tube 4 with the test site is coupled together, the attaching plug of air switch insert the test site～the 220V socket in, just can carry out the automobile evaporator compressive resistance and test.
Fig. 2 is the pressure alternation resistance test bed schematic diagram of automobile evaporator.In Fig. 2, air switch inserts test site～220V supply socket by attaching plug, and AC power is provided for automobile evaporator is pressure alternation resistance test bed.The phase line that 7 pin and the air switch of the time relay connects AC power links to each other, the ground wire that 2 pin and the air switch of the time relay connects AC power links to each other, one termination, 7 pin of its solenoid, another termination 2 pin of solenoid, a contact of a pair of normally opened contact of the time relay connects 8 pin, another contact of normally opened contact connects 6 pin, and 8 pin link to each other with the AC power phase line.6 pin of the time relay link to each other with an end of two-position-five-way solenoid valve coil, the other end of two-position-five-way solenoid valve coil links to each other with the ground wire of air switch, 6 pin of the one termination time relay of A.C. contactor solenoid, another termination AC power ground connection of A.C. contactor solenoid, two terminals of counter are electrically connected with the two ends of A.C. contactor normally opened contact.Press the gas circuit of Fig. 2, two-position-five-way solenoid valve, low pressure filtering pressure reducing valve, high-pressure filteration reduction valve, threeway and interface on the evaporator are connected with tracheae.
Before the test, the evaporator lower end mouth of pipe of being tested is blocked with plug 14, from the evaporator upper orifice to the inner fills with water of evaporator core, using pipe gas joint 12 couples together automobile evaporator pressure alternation resistance test bed threeway 11 and evaporator upper orifice, the high pressure gas interface of solenoid valve draft tube 4 with the test site is coupled together, the attaching plug of air switch insert the test site～the 220V socket in, the time relay is set to 2S and 2S cycling time.During test, press air switch call through test platform power supply, press high-voltage switch gear and connect gas circuit, just can carry out automobile air conditioning evaporator pressure alternation resistance and test.
Its principle of work is:
When air switch energized → time relay solenoid begin to switch on normally opened contact of 2S → time relay disconnects 2S, this moment, the two-position-five-way solenoid valve coil was not switched on, the A port of high pressure gas by two-position-five-way solenoid valve → enter low pressure filtering pressure reducing valve (low pressure filtering pressure reducing valve air pressure is transferred to 1500kPa) → enter threeway → enter evaporator upper orifice is to evaporator inflation pressurization 1500kPa and keep 2S, the time relay 2S that circulates again then, this moment the time relay normally opened contact connect 2S → two-position-five-way solenoid valve coil electricity make valve core of the electromagnetic valve move commutation →, the B port of high pressure gas by two-position-five-way solenoid valve → enter high pressure filter (high-pressure filteration reduction valve air pressure is transferred to 2.94MPa) → enter threeway → enter evaporator upper orifice to evaporator inflation pressurization 2.94MPa also (by adjusting high-pressure filteration reduction valve air pressure) be a circulation at this moment to 2.94MPa and keep 2S.
The every circulation primary of low pressure and high pressure, the normally opened contact closure of the time relay once to the ac contactor coil energising once, A.C. contactor normally opened contact closure once makes counter energising counting once, test constantly circulates by said process, until counter stored count 50000 times, turn off the testing table power supply, cut off the testing table gas circuit, off-test.
Claims (5)
- One kind automobile air conditioning evaporator pressure alternation resistance test bed, this device comprises air switch (6), the time relay (5), two-position-five-way solenoid valve (3), A.C. contactor (7), counter (9), low pressure filtering pressure reducing valve (1) and high-pressure filteration reduction valve (10); It is characterized in that:The inlet of described two-position-five-way solenoid valve (3) connects high-pressure air pipe, first of two-position-five-way solenoid valve (3) exports the upper orifice gas joint (12) that is connected to described automobile air-conditioning evaporator by low pressure filtering pressure reducing valve (1) and threeway, and second outlet of this two-position-five-way solenoid valve (3) is connected to the upper orifice gas joint (12) of described automobile air-conditioning evaporator by high-pressure filteration reduction valve (10) and threeway;Described two-position-five-way solenoid valve (3) solenoid is connected to AC power by the described time relay (5) and air switch (6), control the energising of described two-position-five-way solenoid valve (3) solenoid by the described time relay (5), thereby the commutation of control two-position-five-way solenoid valve (3), promptly control the conducting of two-position-five-way solenoid valve (3) first outlets and second outlet and closing;The two ends of described A.C. contactor (7) coil are connected to AC power by the described time relay (5) and air switch (6), and the two ends of the normally opened contact of described A.C. contactor (7) are connected to described counter (9).
- 2. according to claim 1 automobile air conditioning evaporator pressure alternation resistance test bed, it is characterized in that: when the normally opened contact of the described time relay (5) disconnects, the solenoid no power of described two-position-five-way solenoid valve (3), the first outlet conducting of this two-position-five-way solenoid valve (3), second port closing makes the gas of high-pressure air pipe enter the upper orifice gas joint (12) of described automobile air-conditioning evaporator by described low pressure filtering pressure reducing valve (1); When the normally opened contact of time relay (5) is closed, the solenoid energising of described two-position-five-way solenoid valve (3), the second outlet conducting of this two-position-five-way solenoid valve (3), first port closing, make the gas of high-pressure air pipe enter the upper orifice gas joint (12) of described automobile air-conditioning evaporator by described high-pressure filteration reduction valve (10), while A.C. contactor (7) coil electricity, its normally opened contact closure, the counter stored count is once.
- 3. according to claim 2 automobile air conditioning evaporator pressure alternation resistance test bed, it is characterized in that: the described time relay is preferably cycle time relay.
- 4. according to claim 3 automobile air conditioning evaporator pressure alternation resistance test bed, it is characterized in that: be set to 2S the cycling time of further preferred described cycle time relay, i.e. the normally opened contact of described time relay circulation disconnects 2S and connects 2S subsequently.
- 5. according to claim 2 or 3 described automobile air conditioning evaporator pressure alternation resistance test bed, it is characterized in that: preferably described low pressure filtering pressure reducing valve (1) air pressure is transferred to 1500Kpa, described high-pressure filteration reduction valve (10) air pressure is transferred to 2.94Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101035279A CN101793614B (en) | 2010-01-29 | 2010-01-29 | Automobile air conditioning evaporator pressure alternation resistance test bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101035279A CN101793614B (en) | 2010-01-29 | 2010-01-29 | Automobile air conditioning evaporator pressure alternation resistance test bed |
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| CN101793614A true CN101793614A (en) | 2010-08-04 |
| CN101793614B CN101793614B (en) | 2011-10-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806556A (en) * | 2016-05-06 | 2016-07-27 | 武汉航空仪表有限责任公司 | Device and method for pressure sensor alternating test |
| CN107638650A (en) * | 2017-09-25 | 2018-01-30 | 李成坤 | A kind of transportable fire extinguisher barrel pressure alternation and explosion bulge test device |
| CN107703390A (en) * | 2017-09-29 | 2018-02-16 | 佛山市顺德区美的电子科技有限公司 | Test fixture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718551Y (en) * | 2004-04-12 | 2005-08-17 | 龚孟结 | Leakage tester for evaporator of cooling air system |
| CN200952970Y (en) * | 2006-08-29 | 2007-09-26 | 比亚迪股份有限公司 | Condenser air tightness detecting tool |
| CN100585368C (en) * | 2008-08-26 | 2010-01-27 | 重庆长安汽车股份有限公司 | Durability test console for vehicle remote control central lock system |
-
2010
- 2010-01-29 CN CN2010101035279A patent/CN101793614B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806556A (en) * | 2016-05-06 | 2016-07-27 | 武汉航空仪表有限责任公司 | Device and method for pressure sensor alternating test |
| CN107638650A (en) * | 2017-09-25 | 2018-01-30 | 李成坤 | A kind of transportable fire extinguisher barrel pressure alternation and explosion bulge test device |
| CN107638650B (en) * | 2017-09-25 | 2022-07-22 | 山东海诺知识产权运营管理有限公司 | Cart type fire extinguisher cylinder pressure alternation and explosion test device |
| CN107703390A (en) * | 2017-09-29 | 2018-02-16 | 佛山市顺德区美的电子科技有限公司 | Test fixture |
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| Publication number | Publication date |
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| CN101793614B (en) | 2011-10-05 |
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