CN101769655A - Automatic recovery and fill system of refrigeration system - Google Patents
Automatic recovery and fill system of refrigeration system Download PDFInfo
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- CN101769655A CN101769655A CN201010101246A CN201010101246A CN101769655A CN 101769655 A CN101769655 A CN 101769655A CN 201010101246 A CN201010101246 A CN 201010101246A CN 201010101246 A CN201010101246 A CN 201010101246A CN 101769655 A CN101769655 A CN 101769655A
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Abstract
The invention discloses an automatic recovery and fill system of a refrigeration system, comprising a refrigerant recovery and fill device, a vacuum extractor and a refrigeration oil recovery and fill device, wherein, the refrigerant recovery and fill device comprises a gas-liquid separation evaporating drum, a compressor, an oil separator, a condenser and a fluid reservoir; the refrigeration oil recovery and fill device comprises an oilway filter, an oil reservoir and an oil flowmeter. As an outlet of the oil separator of the system additionally has the refrigeration oil recovery and fill device, both refrigerant recovery and refrigeration oil recovery are realized, also, the refrigeration oil can be filled into the refrigeration system and the compressor. The gas-liquid separation evaporating drum of the invention can separate gas and liquid fully, while a heating strip under the drum enables liquid refrigerant in the drum to evaporate at every moment, which prevents the return liquid damaging the compressor. The system has the effects of energy saving and environmental protection.
Description
Technical field
The present invention relates to a kind of recycling device of refrigeration system, a kind of especially automatic recovery and filling system of refrigeration system.
Background technology
In order to promote the sustainable development of environment, improve the human survival state, countries in the world have all been made restriction to HCF, HCFC class cold-producing medium to the discharging of atmosphere.Simultaneously, because the part environmental protection refrigerant costs an arm and a leg, can collect the cold-producing medium in discarded refrigeration system or the experimental development test macro, carry out recyclingly, be a kind of economy method of environmental protection again.
At present, multifunction refrigeration agent recovery machine on the market has refrigerant-recovery mostly, refrigeration system vacuumizes and fill function, but seldom consider the recovery of refrigeration oil and fill, after making refrigeration system reclaim cold-producing medium several times easily, owing to repeatedly vacuumize and cause the compressor oil starvation, quicken compressor abrasion until damage; In addition, when system refrigerant filled, the way of most of producers was to judge the amount of charging into according to Pressure gauge, and this also can cause in the refrigeration system actual motion, because the refrigerant amount deviation causes system's fallback.
Summary of the invention
For overcoming the prior art above shortcomings, the object of the present invention is to provide and a kind ofly not only can carry out refrigerant-recovery and fill, but also can carry out the refrigeration system that refrigeration oil reclaims and fill and reclaim automatically and filling system.
To achieve these goals, technical scheme of the present invention is as follows: a kind of automatic recovery and filling system of refrigeration system, comprise refrigerant-recovery and filling device, vacuum extractor, and described vacuum extractor comprises hand stop valve A and vavuum pump; Described refrigerant recovering apparatus comprises the gas-liquid separation evaporator, compressor, oil eliminator, condenser, fluid reservoir, described gas-liquid separation evaporator front end is connected with hand stop valve B and check valve A, the rear end is connected with hand stop valve C in turn, air-breathing filter, hand stop valve D, low pressure gauge and compressor, high and low voltage switch and compressor parallel, compressor outlet connects high-pressure manometer successively, hand stop valve E and oil eliminator, be connected with oil level controllers and compressor oil return line magnetic valve A between oil eliminator and the compressor, the oil eliminator rear end connects hand stop valve F and condenser successively, the condenser rear end connects hand stop valve G successively, device for drying and filtering, hand stop valve H, check valve B, magnetic valve B and fluid reservoir, the fluid reservoir outlet is connected on the refrigeration system pipeline by hand stop valve I, and the top of fluid reservoir is equipped with safety valve; Described oil eliminator rear end is also reclaimed with refrigeration oil and filling device is connected, described refrigeration oil reclaims and filling device comprises oil circuit filter, oil storage tank, oil flowmeter, one end of described oil circuit filter by hand stop valve J be connected with oil eliminator with magnetic valve C, the other end passes through hand stop valve K and is connected with oil storage tank with magnetic valve D, liquid level sensor is equipped with on oil storage tank top, and the outlet of oil storage tank is connected on the refrigeration system pipeline by hand stop valve L, oil flowmeter and hand stop valve M.
Three differing heights in the upper, middle and lower of gas-liquid separation evaporator shell of the present invention are installed liquid-sighting glass A respectively, and gas-liquid separation evaporator bottom is furnished with the heating tape.
Liquid-sighting glass B is installed on the fluid reservoir of the present invention, and the fluid reservoir bottom disposes weighing instrument that shows refrigerant quality and the mass sensor of controlling the magnetic valve break-make.
Liquid-sighting glass C is installed on the oil storage tank of the present invention.
Compared with prior art, the present invention has following characteristics:
1, because the port of export of oil eliminator of the present invention has increased refrigeration oil recovery and filling device, thereby realized when reclaiming cold-producing medium, reclaiming refrigeration oil, and can carry out filling of refrigeration oil to refrigeration system and compressor, play the effect of energy-conserving and environment-protective.
2, because gas-liquid separation evaporator of the present invention can be realized gas-liquid separating function, the heating tape of tank body bottom can make a jar interior liquid refrigerant constantly evaporate simultaneously, avoids withdrawing fluid that compressor is caused damage.
3, on gas-liquid separation evaporator of the present invention, fluid reservoir and the oil storage tank liquid-sighting glass has been installed respectively, has been convenient to the yield that the operator directly observes cold-producing medium or refrigeration oil.
4, the present invention can realize filling automatically of refrigeration oil, and the control amount of charging into.Existing refrigerant-recovery fills machine and does not generally consider filling of refrigeration oil on the market, after the novel cold-producing medium of this uses passes through oil eliminator, and oily separated in the system, the oil of oil eliminator deposits oil storage tank in after by filter.Vacuumize end when being recovered refrigeration system, in the time of need charging into refrigeration oil, open the oil circuit hand stop valve, oil is drawn in the refrigeration system by vacuum, and can control the injection rate of refrigeration oil by oil flowmeter.
When 5, general refrigeration system reclaims the equipment of filling and fills cold-producing medium, adopt pressure application control soakage mostly, and the present invention is by the amount of charging into of weighing instrument control cold-producing medium, when reaching the setting cold-producing medium amount of charging into, close cold-producing medium and charge into stop valve, refrigerant charging is finished.Therefore, can realize accurately charging into of cold-producing medium, and the control amount of charging into.
6, the present invention adopts mass sensor, by the break-make of quality control refrigerant-recovery magnetic valve, controls the highest liquid storage amount of each fluid reservoir with this.
Description of drawings
The present invention is 1 of drawings attached only, wherein:
Fig. 1 is the automatic recovery and the filling system pipeline connection diagram of the cold-producing medium of refrigeration system.
Among the figure: 1, check valve A, 2, hand stop valve A, 3, vavuum pump, 4, hand stop valve B, 5, the gas-liquid separation evaporator, 6, the heating tape, 7, liquid-sighting glass A, 8, hand stop valve C, 9, air-breathing filter, 10, hand stop valve D, 11, low pressure gauge, 12, compressor, 13, high and low voltage switch, 14, high-pressure manometer, 15, oil level controllers, 16, magnetic valve A, 17, hand stop valve E, 18, oil eliminator, 19, hand stop valve F, 20, condenser, 21, hand stop valve G, 22, device for drying and filtering, 23, hand stop valve H, 24, check valve B, 25, magnetic valve B, 26, mass sensor, 27, liquid-sighting glass B, 28, weighing instrument, 29, fluid reservoir, 30, safety valve, 31, hand stop valve I, 32, magnetic valve C, 33, hand stop valve J, 34, the oil circuit filter, 35, hand stop valve K, 36, magnetic valve D, 37, liquid level sensor, 38, oil storage tank, 39, liquid-sighting glass C, 40, hand stop valve L, 41, oil flowmeter, 42, hand stop valve M.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified, as shown in Figure 1, a kind of automatic recovery and filling system of cold-producing medium of refrigeration system comprise refrigerant-recovery and filling device, vacuum extractor, and described vacuum extractor comprises hand stop valve A2 and vavuum pump 3; Described refrigerant recovering apparatus comprises gas-liquid separation evaporator 5, compressor 12, oil eliminator 18, condenser 20, fluid reservoir 29, described gas-liquid separation evaporator 5 front ends are connected with hand stop valve B4 and check valve A1, the rear end is connected with hand stop valve C8 in turn, air-breathing filter 9, hand stop valve D10, low pressure gauge 11 and compressor 12, high and low voltage switch 13 is in parallel with compressor 12, compressor 12 ports of export connect high-pressure manometer 14 successively, hand stop valve E17 and oil eliminator 18, be connected with oil level controllers 15 and compressor 12 oil return line magnetic valve A16 between oil eliminator 18 and the compressor 12, oil eliminator 18 rear ends connect hand stop valve F19 and condenser 20 successively, condenser 20 rear ends connect hand stop valve G21 successively, device for drying and filtering 22, hand stop valve H23, check valve B24, magnetic valve B25 and fluid reservoir 29, fluid reservoir 29 outlets are connected on the refrigeration system pipeline by hand stop valve I31, and the top of fluid reservoir 29 is equipped with safety valve 30; Described oil eliminator 18 rear ends are also reclaimed with refrigeration oil and filling device is connected, described refrigeration oil reclaims and filling device comprises oil circuit filter 34, oil storage tank 38, oil flowmeter 41, one end of described oil circuit filter 34 by hand stop valve J33 be connected with oil eliminator 18 with magnetic valve C32, the other end passes through hand stop valve K35 and is connected with oil storage tank 38 with magnetic valve D36, liquid level sensor 37 is equipped with on oil storage tank 38 tops, and the outlet of oil storage tank 38 is connected on the refrigeration system pipeline by hand stop valve L40, oil flowmeter 41 and hand stop valve M42.Three differing heights in the upper, middle and lower of described gas-liquid separation evaporator 5 shells are installed liquid-sighting glass A7 respectively, and gas-liquid separation evaporator 5 bottoms are furnished with heating tape 6.On the described fluid reservoir 29 liquid-sighting glass B27 is installed, fluid reservoir 29 bottoms dispose weighing instrument 28 that shows refrigerant quality and the mass sensor 26 of controlling the magnetic valve break-make.On the described oil storage tank 38 liquid-sighting glass C39 is installed.
The course of work of the present invention is as follows: when reclaiming the cold-producing medium in the refrigeration system, close hand stop valve A2, hand stop valve M42, hand stop valve I31, open hand stop valve B4, the cold-producing medium check valve A1 that flows through enters gas-liquid separation evaporator 5, refrigerant liquid flashes to gaseous refrigerant under the heat effect of tank body lower heating band 6, together pass through air-breathing filter 9 with the refrigerant gas in the system, enter compressor 12 compressions after the filtration, install liquid-sighting glass A7 on the gas-liquid separation evaporator 5 additional, can adjust the energising radical of heating tape 6 at any time according to the height of liquid level.
When sucking refrigerant amount seldom, suction pressure is lower than the low pressure setting value of high and low voltage switch 13, or when retracting device inner refrigerant pressure was higher than the high pressure setting value of high and low voltage switch 13, compressor 12 was out of service.Enter condenser 20 through the cold-producing medium behind the compressor 12 and be condensed into refrigerant liquid, after liquid refrigerant filtered through device for drying and filtering 22, the check valve B24 that flows through entered fluid reservoir 29, and check valve B24 prevents that fluid reservoir 29 inner refrigerants from flowing backward to condenser 20.
When the pressure of fluid reservoir 29 surpassed setting value, safety valve 30 started.Be furnished with filling of hand stop valve I31 control cold-producing medium behind the fluid reservoir 29.Cold-producing medium is flowed through behind the compressor 12, enters oil eliminator 18, and an isolated oil part is supplied with the compressor 12 in the recovery system, and another part is stored in to be prepared in the oil storage tank 38 to re-inject in the refrigeration system.
Compressor 12 is connected with oil level controllers 15, and when compressor 12 oil levels were lower than oil level, magnetic valve A16 opened, and magnetic valve C32 closes, and oil is back to compressor 12; When compressor 12 oil levels rose to oil level, magnetic valve A16 closed, and magnetic valve C32 opens, and the oil oil circuit filter 34 of flowing through flow to oil storage tank 38.
Oil storage tank 38 sidewalls are furnished with liquid-sighting glass 39, can observe oil level in the oil storage tank 38, and oil storage tank 38 body internal upper parts connect liquid level sensor 37, when oil is full in the oil storage tank 38, the liquid level sensor 37 output signals of telecommunication, magnetic valve D36 disconnects, and can change oil storage tank 38 or filled refrigeration oil.
Fill before cold-producing medium or the refrigeration oil, need vacuumize refrigeration system.When vacuumizing, close hand stop valve B4, hand stop valve M42, hand stop valve I31, open hand stop valve A2 and vavuum pump 3, refrigeration system is vacuumized.
When filling cold-producing medium, close hand stop valve A2, close hand stop valve B4, hand stop valve M42, open hand stop valve I31, charge into refrigerant quality as required, observe weighing instrument 28,, close refrigerant charging hand stop valve I31 when charging into cold-producing medium when reaching setting value.
When filling refrigeration oil, close hand stop valve A2, close hand stop valve B4, hand stop valve I31, open hand stop valve M42, confirm the oily volume that charges into by oil flowmeter 41, when reaching predetermined value, close hand stop valve M42, oiling finishes.
Claims (4)
1. the automatic recovery and the filling system of a refrigeration system comprise refrigerant-recovery and filling device, vacuum extractor, and described vacuum extractor comprises hand stop valve A (2) and vavuum pump (3); It is characterized in that: described refrigerant recovering apparatus comprises gas-liquid separation evaporator (5), compressor (12), oil eliminator (18), condenser (20), fluid reservoir (29), described gas-liquid separation evaporator (5) front end is connected with hand stop valve B (4) and check valve A (1), the rear end is connected with hand stop valve C (8) in turn, air-breathing filter (9), hand stop valve D (10), low pressure gauge (11) and compressor (12), high and low voltage switch (13) is in parallel with compressor (12), compressor (12) port of export connects high-pressure manometer (14) successively, hand stop valve E (17) and oil eliminator (18), be connected with oil level controllers (15) and compressor (12) oil return line magnetic valve A (16) between oil eliminator (18) and the compressor (12), oil eliminator (18) rear end connects hand stop valve F (19) and condenser (20) successively, condenser (20) rear end connects hand stop valve G (21) successively, device for drying and filtering (22), hand stop valve H (23), check valve B (24), magnetic valve B (25) and fluid reservoir (29), fluid reservoir (29) outlet is connected on the refrigeration system pipeline by hand stop valve I (31), and the top of fluid reservoir (29) is equipped with safety valve (30); Described oil eliminator (18) rear end is also reclaimed with refrigeration oil and filling device is connected, described refrigeration oil reclaims and filling device comprises oil circuit filter (34), oil storage tank (38), oil flowmeter (41), one end of described oil circuit filter (34) is connected with oil eliminator (18) with magnetic valve C (32) by hand stop valve J (33), the other end is connected with oil storage tank (38) with magnetic valve D (36) by hand stop valve K (35), liquid level sensor (37) is equipped with on oil storage tank (38) top, and the outlet of oil storage tank (38) is by hand stop valve L (40), oil flowmeter (41) and hand stop valve M (42) are connected on the refrigeration system pipeline.
2. the automatic recovery and the filling system of a kind of refrigeration system according to claim 1, it is characterized in that: three differing heights in upper, middle and lower of described gas-liquid separation evaporator (5) shell are installed liquid-sighting glass A (7) respectively, and gas-liquid separation evaporator (5) bottom is furnished with heating tape (6).
3. the automatic recovery and the filling system of a kind of refrigeration system according to claim 1, it is characterized in that: liquid-sighting glass B (27) is installed on the described fluid reservoir (29), and fluid reservoir (29) bottom disposes weighing instrument (28) that shows refrigerant quality and the mass sensor (26) of controlling the magnetic valve break-make.
4. the automatic recovery and the filling system of a kind of refrigeration system according to claim 1 is characterized in that: liquid-sighting glass C (39) is installed on the described oil storage tank (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101246A CN101769655A (en) | 2010-01-25 | 2010-01-25 | Automatic recovery and fill system of refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101246A CN101769655A (en) | 2010-01-25 | 2010-01-25 | Automatic recovery and fill system of refrigeration system |
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| CN101769655A true CN101769655A (en) | 2010-07-07 |
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| CN201010101246A Pending CN101769655A (en) | 2010-01-25 | 2010-01-25 | Automatic recovery and fill system of refrigeration system |
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| CN102706052A (en) * | 2012-05-31 | 2012-10-03 | 浙江飞越机电有限公司 | Full-automatic four-port recycling machine and using method thereof |
| CN103115458A (en) * | 2013-02-08 | 2013-05-22 | 甘小琴 | Full automatic gas recovering and charging device and method |
| CN103245149A (en) * | 2013-05-23 | 2013-08-14 | 重庆耐德能源装备集成有限公司 | Mixed refrigerant circulation liquefied natural gas device and mixed refrigerant recovery device |
| CN103471685A (en) * | 2012-06-06 | 2013-12-25 | 珠海格力电器股份有限公司 | Gas-liquid separator testing device and testing method thereof |
| CN103807416A (en) * | 2012-11-09 | 2014-05-21 | 苏州钻石金属粉有限公司 | Gear lubricating device |
| CN103900304A (en) * | 2014-01-16 | 2014-07-02 | 芜湖三瑞香雪制冷科技有限公司 | Liquid storage device for refrigerating system |
| CN103925740A (en) * | 2013-01-11 | 2014-07-16 | 约克（无锡）空调冷冻设备有限公司 | Air source heat pump system |
| CN103968626A (en) * | 2014-05-27 | 2014-08-06 | 珠海格力电器股份有限公司 | Refrigerant recovery system |
| CN104121735A (en) * | 2013-04-23 | 2014-10-29 | 李兴银 | Flammable substance recovery device |
| CN104236183A (en) * | 2013-06-14 | 2014-12-24 | 上汽通用五菱汽车股份有限公司 | Filling gun of refrigerant filling machine |
| CN104677158A (en) * | 2014-12-16 | 2015-06-03 | 西北工业大学 | Forced cooling device based on latent heat exchanging |
| CN105408704A (en) * | 2014-01-27 | 2016-03-16 | 三菱电机株式会社 | Refrigeration device |
| CN105652990A (en) * | 2015-12-23 | 2016-06-08 | 曙光信息产业(北京)有限公司 | Liquid storage tank |
| CN108168166A (en) * | 2018-02-01 | 2018-06-15 | 青岛绿环工业设备有限公司 | A kind of low temperature auxiliary refrigerant recovery system |
| WO2018129670A1 (en) * | 2017-01-11 | 2018-07-19 | 李光京 | Ice making machine set and refrigeration system |
| CN108895732A (en) * | 2018-05-23 | 2018-11-27 | 文丹 | A kind of car air conditioner refrigerant adding set |
| CN110220339A (en) * | 2019-05-14 | 2019-09-10 | 绍兴西爱西尔数控科技有限公司 | A kind of refrigerant recovery system with function of measuring |
| CN110723710A (en) * | 2018-07-17 | 2020-01-24 | 株洲时代新材料科技股份有限公司 | Liquid composite spring push-pull type vacuum liquid injection machine and liquid injection method |
| CN110793245A (en) * | 2019-10-31 | 2020-02-14 | 合肥华凌股份有限公司 | Vacuumizing method, refrigerant filling method and refrigerator |
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| CN113203228A (en) * | 2021-04-28 | 2021-08-03 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant recovery equipment and control method of refrigerant recovery equipment |
| CN113531966A (en) * | 2021-08-17 | 2021-10-22 | 珠海格力电器股份有限公司 | Refrigerant recovery device, refrigerant recovery system and control method thereof |
| CN113847761A (en) * | 2021-10-26 | 2021-12-28 | 漳州科华电气技术有限公司 | Method for filling refrigerant in air conditioning system |
| CN114046619A (en) * | 2021-11-17 | 2022-02-15 | 清华大学 | Heat pump and refrigeration system vacuumizing and refrigerant charging and discharging system and control method thereof |
| CN114877572A (en) * | 2022-05-24 | 2022-08-09 | 珠海格力电器股份有限公司 | Refrigerant recovery system and control method |
-
2010
- 2010-01-25 CN CN201010101246A patent/CN101769655A/en active Pending
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| CN102706052A (en) * | 2012-05-31 | 2012-10-03 | 浙江飞越机电有限公司 | Full-automatic four-port recycling machine and using method thereof |
| CN102706052B (en) * | 2012-05-31 | 2014-12-24 | 浙江飞越机电有限公司 | Full-automatic four-port recycling machine and using method thereof |
| CN103471685B (en) * | 2012-06-06 | 2016-02-03 | 珠海格力电器股份有限公司 | Gas-liquid separator testing device and testing method thereof |
| CN103471685A (en) * | 2012-06-06 | 2013-12-25 | 珠海格力电器股份有限公司 | Gas-liquid separator testing device and testing method thereof |
| CN103807416A (en) * | 2012-11-09 | 2014-05-21 | 苏州钻石金属粉有限公司 | Gear lubricating device |
| CN103925740A (en) * | 2013-01-11 | 2014-07-16 | 约克（无锡）空调冷冻设备有限公司 | Air source heat pump system |
| CN103115458B (en) * | 2013-02-08 | 2015-09-09 | 甘小琴 | Full automatic gas reclaims filling device and method |
| CN103115458A (en) * | 2013-02-08 | 2013-05-22 | 甘小琴 | Full automatic gas recovering and charging device and method |
| CN104121735A (en) * | 2013-04-23 | 2014-10-29 | 李兴银 | Flammable substance recovery device |
| CN103245149A (en) * | 2013-05-23 | 2013-08-14 | 重庆耐德能源装备集成有限公司 | Mixed refrigerant circulation liquefied natural gas device and mixed refrigerant recovery device |
| CN104236183A (en) * | 2013-06-14 | 2014-12-24 | 上汽通用五菱汽车股份有限公司 | Filling gun of refrigerant filling machine |
| CN104236183B (en) * | 2013-06-14 | 2017-08-18 | 上汽通用五菱汽车股份有限公司 | A kind of refrigerant filling machine filling gun |
| CN103900304A (en) * | 2014-01-16 | 2014-07-02 | 芜湖三瑞香雪制冷科技有限公司 | Liquid storage device for refrigerating system |
| CN105408704A (en) * | 2014-01-27 | 2016-03-16 | 三菱电机株式会社 | Refrigeration device |
| CN103968626A (en) * | 2014-05-27 | 2014-08-06 | 珠海格力电器股份有限公司 | Refrigerant recovery system |
| CN103968626B (en) * | 2014-05-27 | 2016-09-14 | 珠海格力电器股份有限公司 | Refrigerant recovery system |
| CN104677158A (en) * | 2014-12-16 | 2015-06-03 | 西北工业大学 | Forced cooling device based on latent heat exchanging |
| CN105652990A (en) * | 2015-12-23 | 2016-06-08 | 曙光信息产业(北京)有限公司 | Liquid storage tank |
| WO2018129670A1 (en) * | 2017-01-11 | 2018-07-19 | 李光京 | Ice making machine set and refrigeration system |
| CN108168166A (en) * | 2018-02-01 | 2018-06-15 | 青岛绿环工业设备有限公司 | A kind of low temperature auxiliary refrigerant recovery system |
| CN108168166B (en) * | 2018-02-01 | 2023-11-24 | 青岛绿环工业设备有限公司 | Low-temperature auxiliary refrigerant recovery system |
| CN108895732A (en) * | 2018-05-23 | 2018-11-27 | 文丹 | A kind of car air conditioner refrigerant adding set |
| CN110723710A (en) * | 2018-07-17 | 2020-01-24 | 株洲时代新材料科技股份有限公司 | Liquid composite spring push-pull type vacuum liquid injection machine and liquid injection method |
| CN110723710B (en) * | 2018-07-17 | 2021-05-14 | 株洲时代新材料科技股份有限公司 | Liquid composite spring push-pull type vacuum liquid injection machine and liquid injection method |
| CN110220339A (en) * | 2019-05-14 | 2019-09-10 | 绍兴西爱西尔数控科技有限公司 | A kind of refrigerant recovery system with function of measuring |
| CN110793245A (en) * | 2019-10-31 | 2020-02-14 | 合肥华凌股份有限公司 | Vacuumizing method, refrigerant filling method and refrigerator |
| CN112856864B (en) * | 2021-01-16 | 2023-07-21 | 北海职业学院 | Refrigerant purifying system |
| CN112856864A (en) * | 2021-01-16 | 2021-05-28 | 北海职业学院 | Refrigerant purification system |
| CN113203228A (en) * | 2021-04-28 | 2021-08-03 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant recovery equipment and control method of refrigerant recovery equipment |
| CN113203228B (en) * | 2021-04-28 | 2022-03-15 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant recovery equipment and control method of refrigerant recovery equipment |
| CN113531966A (en) * | 2021-08-17 | 2021-10-22 | 珠海格力电器股份有限公司 | Refrigerant recovery device, refrigerant recovery system and control method thereof |
| CN113847761A (en) * | 2021-10-26 | 2021-12-28 | 漳州科华电气技术有限公司 | Method for filling refrigerant in air conditioning system |
| CN113847761B (en) * | 2021-10-26 | 2023-08-18 | 漳州科华电气技术有限公司 | Method for filling refrigerant in air conditioning system |
| CN114046619A (en) * | 2021-11-17 | 2022-02-15 | 清华大学 | Heat pump and refrigeration system vacuumizing and refrigerant charging and discharging system and control method thereof |
| CN114877572B (en) * | 2022-05-24 | 2023-04-11 | 珠海格力电器股份有限公司 | Refrigerant recovery system and control method |
| CN114877572A (en) * | 2022-05-24 | 2022-08-09 | 珠海格力电器股份有限公司 | Refrigerant recovery system and control method |
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Open date: 20100707 |