CN206160584U - Gaseous substitution method air conditioner evacuating device - Google Patents
Gaseous substitution method air conditioner evacuating device Download PDFInfo
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- CN206160584U CN206160584U CN201621208963.1U CN201621208963U CN206160584U CN 206160584 U CN206160584 U CN 206160584U CN 201621208963 U CN201621208963 U CN 201621208963U CN 206160584 U CN206160584 U CN 206160584U
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Abstract
The utility model discloses a gaseous substitution method air conditioner evacuating device belongs to the air conditioner and takes out the vacuum technique field. The utility model discloses an air conditioner evacuating device, including the vacuum pump of being connected with refrigerating system, still including gas storage device and gas bomb, two branch roads have been drawn forth on the road to refrigerating system's exhaust tube, branch road and vacuum pump connection to set up the first control valve on this pipeline, another has connected gradually second control valve, gas storage device, third control valve, gas bomb on the road, during the evacuation, utilize mutually supporting of three control valve, displace refrigerating system internal contamination gas, realize bleeding to refrigerating system's circulation, make air and moisture in the refrigerating system fully arrange to the greatest extent, reach the evacuation purpose, improved refrigerating system's vacuum and air suction efficiency.
Description
Technical field
The utility model is related to air-conditioning vacuum pumping technology field, more particularly, it relates to a kind of gas displacement method air-conditioning is taken out
Vacuum plant.
Background technology
For refrigeration plant, refrigeration performance is an important performance indications, so ensureing before charging refrigerant
The vacuum of refrigeration system is to improve the key measure of refrigeration performance.
In the market refrigeration system great majority are simply vacuumized using sliding vane rotary vacuum pump, i.e., disposably take out true
It is empty.So produce three drawbacks, one be vacuumize the time required to it is long；Two is to vacuumize to be difficult to reach setting；Three is blade
Vavuum pump determined due to itself performance, that is, extract vapor scarce capacity.
Vacuum does not reach the decline for requiring to cause refrigeration performance；When not coagulating containing excessive in Crew Cooling System
Property gas when, pressure at expulsion during unit operation can be higher, so as to the refrigerating capacity for causing unit declines, operation power consumption increase, machine
The efficiency of group operation is reduced.When excessive moisture content is contained in Crew Cooling System, the effect of unit operation not only can be equally reduced
Rate, can also corrode unit compressor electric motor coil, make compressor lubrication deterioration of oil, have a strong impact on the service life and fortune of compressor
Row stability, moisture may cause refrigeration system " ice is blocked up " and " copper facing " phenomenon in vacuum system residual after charging refrigerant.
So after refrigeration system is completed, with vavuum pump the air in system, moisture is evacuated and drained, refrigeration system is set to reach regulation
Vacuum be the step for affecting performance of refrigerant systems more crucial.
China Patent No.：ZL201120109278.4, authorized announcement date：On October 5th, 2011, invention and created name is：
Air conditioner unit vacuum-pumping fluoridating device, this application case is disclosed plus fluorine device is included for connect refrigerant cylinder first
Road, the tie point is provided with the first valve；For connecting the second branch road of air-conditioner set low-pressure port, second branch road
It is provided with the second valve；For connecting the 3rd branch road of air-conditioner set high pressure port, the 3rd branch road is provided with the 3rd valve；
Described tie point, the second branch road and the 3rd branch circuit parallel connection together, second valve and the 3rd branch road of second branch road
The 3rd valve between be provided with the 4th valve, vavuum pump is connected with by pipeline between the 3rd valve and the 4th valve.
The patent formula directly adds cold-producing medium into system, although has carried out certain displacement, but has substantially been difficult handle
Air and moisture removal, vacuum cannot be guaranteed, and have considerable influence to performance.
Chinese Patent Application No.：201410401417.9, the applying date：On August 15th, 2014, invention and created name is：One
Kind of vacuumizing and exhausting device, this application case discloses a kind of vacuumizing and exhausting device, including high vacuum multiple layer heat insulation container, slightly takes out
Unit, smart pump group, electric-control system, heater, the thick pump group is connected by pipeline with smart pump group, and smart pump group is led to
Main pipeline and high vacuum multiple layer heat insulation container interlayer UNICOM are crossed, the high vacuum multiple layer heat insulation container is by pipeline connection plus hot charging
Put, the thick pump group, smart pump group, heater are connected respectively to electric-control system.The air extractor structure is numerous and diverse, divides multiple
Pumping unit is vacuumized, and process is complex, although can reach higher vacuum, but its efficiency is low, operable
Property is low.
Utility model content
1. the utility model technical problem to be solved
The purpose of this utility model be overcome refrigeration system in prior art to vacuumize that efficiency is low, easy residual moisture not
A kind of foot, there is provided gas displacement method air-conditioning vacuum extractor, the utility model utilizes gas displacement method, is taken out by repeatedly circulation
Gas fully drains the air in refrigeration system, moisture, reaches and vacuumizes purpose, improves the vacuum of refrigeration system and takes out true
Empty efficiency.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is：
A kind of gas displacement method air-conditioning vacuum extractor of the present utility model, including the vavuum pump being connected with refrigeration system,
Also include caisson and gas bomb, two branch roads are led on the exhaust pipe of refrigeration system, a branch road connects with vavuum pump
Connect, and first is arranged on the pipeline and control valve；Be connected with turn on another article of branch road the second control valve, caisson, the 3rd
Control valve, gas bomb.
Further improve as the utility model, described first control valve, the second control valve and the 3rd control valve
It is air-conditioning angle valve.
Further improve as the utility model, be high pure nitrogen or high purity inert gas in the gas bomb.
Further improve as the utility model, digital display vacuum meter is provided with the exhaust pipe.
Further improve as the utility model, described inert gas is helium, neon, argon gas, Krypton or xenon
One kind in gas.
Further improve as the utility model, the vavuum pump is rotary-vane vaccum pump.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that：
(1) a kind of gas displacement method air-conditioning vacuum extractor of the present utility model, by two branch roads vacuum is connected respectively
Pump and gas bomb, and caisson is set on the branch road of gas bomb place, the caisson can be faced as intermediate receptacle
When nitrogen or inert gas storage, and enter line replacement with empty gas and water such that it is able to more sufficiently remove air in refrigeration system
And water, reach and vacuumize purpose；
(2) a kind of gas displacement method air-conditioning vacuum extractor of the present utility model, is provided with multiple control valves, by control
Cooperation between valve so as to realize different circulation status, can reach the mesh of repeatedly circulation pumping switching gas flow pipe road
's；
(3) a kind of gas displacement method air-conditioning vacuum pumping method of the present utility model, by the design to caisson volume,
The high pure nitrogen being filled in refrigeration system or the pressure of inert gas are slightly above start pressure, and refrigeration system is vacuumized again
When, due to the rising of refrigeration system pressure, the corresponding speed of exhaust can be improved, and repeatedly the efficiency ratio of extracting vacuum is once after circulation
The efficiency that property is vacuumized is greatly improved；
(4) a kind of gas displacement method air-conditioning vacuum extractor of the present utility model, by the orderly switching of three control valves
With repeatedly circulation filling in refrigeration systems, and with refrigeration system in air, after moisture is sufficiently mixed, it is high-purity repeatedly extracting
During nitrogen/inert gas, air and moisture mixed gas, the subtracting in the order of magnitude of the air and moisture in refrigeration system
It is few, the saturated vapor pressure of the moisture in refrigeration system is especially reduced, greatly enhance extraction vapor ability.
Description of the drawings
Fig. 1 is a kind of structural representation of gas displacement method air-conditioning vacuum extractor of the present utility model；
Fig. 2 is the flow chart that vacuum extractor of the present utility model is vacuumized；
Fig. 3 is the pumping curve synoptic diagram of the utility model intermediate pump.
Label declaration in schematic diagram：1st, refrigeration system；2nd, vavuum pump；3rd, the first control valve；4th, the second control valve；5th, store up
Device of air；6th, the 3rd control valve；7th, gas bomb；8th, digital display vacuum meter.
Specific embodiment
To further appreciate that present disclosure, in conjunction with the accompanying drawings and embodiments the present invention is described in detail.
Embodiment 1
With reference to Fig. 1, a kind of gas displacement method air-conditioning vacuum extractor of the present embodiment, mainly by vavuum pump 2, caisson
5 and gas bomb 7, two branch roads are led on the exhaust pipe of refrigeration system 1, a branch road is connected with vavuum pump 2, and in the pipe
First is arranged on road and controls valve 3；Be connected with turn on another article of branch road the second control valve 4, caisson the 5, the 3rd control valve 6,
Gas bomb 7.
When vacuumizing to refrigeration system, when the ultimate pressure of vavuum pump performance parameter is reached, corresponding speed of exhaust meeting
Reduce, and finally vacuumize that difficulty is larger, aqueous vapor is difficult to be removed completely.Therefore, in the present embodiment caisson 5 volume
It is that section is carried out according to the volume of the performance parameter curves such as ultimate pressure, the speed of exhaust, the start pressure of vavuum pump and refrigeration system
Design and calculating, as shown in figure 3, curve is that vacuum pumping hole is evacuated curve, the as can be seen from Figure speed of evacuation in the figure
It is constantly to be reduced according to the reduction of the pressure of gas, is 10 in vacuum-2～10 supports (correspondence 1.33Pa～1330Pa) are taken out
Speed is essentially identical, and when vacuum is below 0.133Pa, the speed of exhaust declines rapidly.By the volume for controlling caisson 5,
After high pure nitrogen in caisson 5 is filled in refrigeration system 1, the air pressure in refrigeration system 1 is higher than start pressure, pressure
The maximum pumping speed scope of about 1.33Pa, precisely vavuum pump is right due to the rising of refrigeration system pressure when vacuumizing again
The speed of exhaust answered can be improved, and repeatedly the efficiency of extracting vacuum is greatly improved than the efficiency that disposably vacuumizes after circulation, is saved
Time cost.
As one kind preferably, the first control control control valve 6 of valve 4 and the 3rd of valve 3, second in the present embodiment is air-conditioning
Angle valve, air-conditioning angle valve latus rectum is big, can effectively prevent pipeline blockage.
It is high pure nitrogen in gas bomb 7, using high pure nitrogen the displacement of air and water is carried out, high pure nitrogen is at normal temperatures
, close to inert gas, its micro residual gas is several on refrigerant performance without impact, and the main component in air for performance
It is nitrogen, the nitrogen of discharge will not be polluted to air.
Embodiment 2
A kind of gas displacement method air-conditioning vacuum extractor of the present embodiment, its basic structure is same as Example 1, and it is different
Part be：For the ease of observing the vacuum in refrigeration system 1, digital display vacuum meter 8 is provided with exhaust pipe, the digital display
Vacuum meter 8 can be judged according to the vacuum that it is measured with the vacuum in real-time detection refrigeration system 1, three controlled
The orderly switching of valve and cooperation, reach gas displacement, circulate the purpose for vacuumizing.
Embodiment 3
With reference to Fig. 2, a kind of gas displacement method air-conditioning vacuum pumping method of the present embodiment, using the gas in above-described embodiment
Displacement method air-conditioning vacuum extractor is vacuumized, and is illustrated by taking high pure nitrogen as an example, and its step is：
Step 1：Open first and control the control valve 4 of valve 3 and second, refrigeration system 1 and caisson 5 are vacuumized；
The main purpose of the step is that first refrigeration system 1 is vacuumized, while caisson 5 is vacuumized, so as to follow-up
High pure nitrogen can be filled with caisson 5.
Step 2, closing second control valve 4, open the 3rd and control valve 6, and high pure nitrogen is filled in caisson 5, so
The 3rd is closed afterwards controls valve 6；Using caisson 5 as medium, high pure nitrogen is first filled with caisson 5, is then recycled
Caisson 5 inflates displacement in refrigeration system 1.
Step 3, pressure in refrigeration system 1 is detected by digital display vacuum meter 8, (different vavuum pumps can be according to it when reaching 3Pa
Curvilinear motion is selected, without specific requirement), close first and control valve 3, to open second and control valve 4, high pure nitrogen is filled in refrigeration
1 in system, it is sufficiently mixed the air in high pure nitrogen and refrigeration system 1, moisture；
Due to being evacuated in refrigeration system 1, its air pressure is relatively low, therefore, after the second control valve 4 are opened, high pure nitrogen
Can rapidly enter in refrigeration system 1, the air, moisture in high pure nitrogen and refrigeration system 1 is sufficiently mixed, remaining air and water
The total component divided in mixed gas is reduced into the order of magnitude, is vacuumized relative to directly disposable displacement, and this method is obtained in that
The less refrigeration system of moisture content.
Further, since the particular design of the volume of caisson 5, when the high pure nitrogen in caisson 5 is punched into refrigeration
After in system, the pressure in refrigeration system can be higher than start pressure, when vacuumizing to refrigeration system again, due to refrigeration system pressure
Strong rising, the corresponding speed of exhaust can be improved.
Step 4, closing second control valve 4, open first and control valve 3, and refrigeration system 1 is vacuumized again, while opening
3rd control valve 6, fills again after high pure nitrogen into caisson 5, closes the 3rd and controls valve 6；
Step 5, by step 3 to step 4 circulate operation 3 times, to the vacuum reached required by vacuum system 1.
Embodiment 4
A kind of gas displacement method air-conditioning vacuum pumping method of the present embodiment, it is empty using the gas displacement method in above-described embodiment
Vacuum extractor is adjusted to be vacuumized, the gas for being adopted can be any one in helium, neon, argon gas, Krypton or xenon
Kind, illustrating by taking high-purity argon gas as an example, its step is：
Step 1：Open first and control the control valve 4 of valve 3 and second, refrigeration system 1 and caisson 5 are vacuumized；
Step 2, closing second control valve 4, open the 3rd and control valve 6, and high-purity argon gas are filled in caisson 5, so
The 3rd is closed afterwards controls valve 6；
Step 3, pressure in refrigeration system 1 is detected by digital display vacuum meter 8, when reaching specified vacuum and spending, close first and control
Valve processed 3, opens second and controls valve 4, and high-purity argon gas in gas bomb are filled in 1 in refrigeration system, makes filling high-purity argon gas and system
Air, moisture in cooling system 1 is sufficiently mixed；
Step 4, closing second control valve 4, open first and control valve 3, and refrigeration system 1 is vacuumized again, while opening
3rd control valve 6, fills again after high-purity argon gas into caisson 5, closes the 3rd and controls valve 6；
Step 5, by step 3 to step 4 circulate operation, to the vacuum reached required by vacuum system 1.
Embodiment 5
A kind of gas displacement method air-conditioning vacuum pumping method of the present embodiment, it is empty using the gas displacement method in above-described embodiment
Adjust vacuum extractor to be vacuumized, illustrate by taking helium as an example, its step is：
Step 1：Open first and control the control valve 4 of valve 3 and second, refrigeration system 1 and caisson 5 are vacuumized；
Step 2, closing second control valve 4, open the 3rd and control valve 6, helium are filled in caisson 5, Ran Houguan
Close the 3rd control valve 6；
Step 3, pressure in refrigeration system 1 is detected by digital display vacuum meter 8, when reaching specified vacuum and spending, close first and control
Valve processed 3, opens second and controls valve 4, and helium in gas bomb is filled in 1 in refrigeration system, makes in filling helium and refrigeration system 1
Air, moisture is sufficiently mixed；
Step 4, closing second control valve 4, open first and control valve 3, and refrigeration system 1 is vacuumized again, while opening
3rd control valve 6, fills again after helium into caisson 5, closes the 3rd and controls valve 6
Step 5, by step 3 to step 4 circulate operation, to the vacuum reached required by vacuum system 1.
Also have using nitrogen displacement vacuumizing method in common vacuum pumping method, but be mostly directly by the nitrogen in gas bomb
In being filled with refrigeration system, nitrogen charging amount is controlled using flow valve, this nitrogen displacement is simply simply using nitrogen refrigeration system
In air and moisture drive out of, but because the convection current of gas, partial air and moisture can be detained in refrigeration systems, even if subsequently
Vacuumize, it is also difficult to draw it out, affect in refrigeration systems system work so as to cause part moisture to remain.In refrigeration
When, the residual of moisture can cause refrigeration system " ice is blocked up " and " copper facing " phenomenon occur, and the oxygen in the air for being remained can cause pipe
Road is corroded, and has a strong impact on system work.
Inert gas is difficult to carry out chemical reaction, therefore the normal operation of system is not interfered with refrigeration system, can use
In the displacement of air；, close to indifferent gas gas, its micro residual gas is to cold-producing medium for high pure nitrogen performance at normal temperatures
Performance is several without impact, and is discharged in air and does not have pollution, therefore, both can be used to replacing the air in refrigeration system and
Moisture.
In vacuum pumping method provided by the present invention, by the orderly switching of three control valves, can realize to refrigeration
Circulation filling high pure nitrogen/inert gas in system, makes the reduction of air and moisture in refrigeration system in the order of magnitude.Additionally,
The gas being filled with reduces the saturated vapor pressure of the moisture in refrigeration system, greatly enhances extraction vapor ability.
Additionally, the air pressure in refrigeration system is slightly above start pressure, when vacuumizing again, due to the liter of refrigeration system pressure
Height, the corresponding speed of exhaust can be improved, and repeatedly the efficiency of extracting vacuum is greatly improved than the efficiency that disposably vacuumizes after circulation；
Objectionable impurities gas in refrigeration system, such as oxygen, the content of vapor greatly reduce, and effectively raise the true of refrigeration system
Reciprocal of duty cycle and production efficiency.
Below schematically to the present invention and embodiments thereof be described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case of without departing from the invention objective, is designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (6)
1. a kind of gas displacement method air-conditioning vacuum extractor, including the vavuum pump (2) being connected with refrigeration system (1), its feature exists
In：Also include caisson (5) and gas bomb (7), two branch roads are led on the exhaust pipe of refrigeration system (1), one is propped up
Road is connected with vavuum pump (2), and the first control valve (3) is arranged on the pipeline；The second control is connected with turn on another branch road
Valve (4) processed, caisson (5), the 3rd control valve (6), gas bomb (7).
2. a kind of gas displacement method air-conditioning vacuum extractor according to claim 1, it is characterised in that：The first described control
Valve (3) processed, the second control valve (4) and the 3rd control valve (6) are air-conditioning angle valve.
3. a kind of gas displacement method air-conditioning vacuum extractor according to claim 1, it is characterised in that：The gas bomb
(7) it is high pure nitrogen or inert gas in.
4. a kind of gas displacement method air-conditioning vacuum extractor according to claim 1, it is characterised in that：The exhaust pipe
On be provided with digital display vacuum meter (8).
5. a kind of gas displacement method air-conditioning vacuum extractor according to claim 3, it is characterised in that：Described indifferent gas
Body is the one kind in helium, neon, argon gas, Krypton or xenon.
6. a kind of gas displacement method air-conditioning vacuum extractor according to any one of Claims 1 to 5, it is characterised in that：
The vavuum pump (2) is rotary-vane vaccum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208963.1U CN206160584U (en) | 2016-11-09 | 2016-11-09 | Gaseous substitution method air conditioner evacuating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621208963.1U CN206160584U (en) | 2016-11-09 | 2016-11-09 | Gaseous substitution method air conditioner evacuating device |
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| CN206160584U true CN206160584U (en) | 2017-05-10 |
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ID=58659807
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| CN201621208963.1U Active CN206160584U (en) | 2016-11-09 | 2016-11-09 | Gaseous substitution method air conditioner evacuating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352626A (en) * | 2016-11-09 | 2017-01-25 | 马鞍山汉德绿色建筑环境科技有限公司 | Gas displacement method air conditioner vacuum pumping device and vacuum pumping method |
| CN111782461A (en) * | 2020-06-06 | 2020-10-16 | 格力电器（合肥）有限公司 | Parameter acquisition method for vacuumizing of air conditioner, computer-readable storage medium and terminal |
| CN114076421A (en) * | 2022-01-19 | 2022-02-22 | 浙江飞旋科技有限公司 | Protection method and system for refrigeration system adopting magnetic suspension refrigeration compressor |
-
2016
- 2016-11-09 CN CN201621208963.1U patent/CN206160584U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352626A (en) * | 2016-11-09 | 2017-01-25 | 马鞍山汉德绿色建筑环境科技有限公司 | Gas displacement method air conditioner vacuum pumping device and vacuum pumping method |
| CN111782461A (en) * | 2020-06-06 | 2020-10-16 | 格力电器（合肥）有限公司 | Parameter acquisition method for vacuumizing of air conditioner, computer-readable storage medium and terminal |
| CN114076421A (en) * | 2022-01-19 | 2022-02-22 | 浙江飞旋科技有限公司 | Protection method and system for refrigeration system adopting magnetic suspension refrigeration compressor |
| CN114076421B (en) * | 2022-01-19 | 2022-03-29 | 浙江飞旋科技有限公司 | Protection method and system for refrigeration system adopting magnetic suspension refrigeration compressor |
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