CN201819477U - Direct-current frequency-conversional multi-connected multifunction air-conditioner - Google Patents
Direct-current frequency-conversional multi-connected multifunction air-conditioner Download PDFInfo
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- CN201819477U CN201819477U CN 201020525831 CN201020525831U CN201819477U CN 201819477 U CN201819477 U CN 201819477U CN 201020525831 CN201020525831 CN 201020525831 CN 201020525831 U CN201020525831 U CN 201020525831U CN 201819477 U CN201819477 U CN 201819477U
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Abstract
The utility model discloses a direct-current frequency-conversion multi-connected multifunction air-conditioner comprising a direct-current frequency-conversion compressor (1), an oil-gas separator (2), a four-way valve (3), a condenser (4), an external gas-liquid separator (7), and multiple sets of indoor expansion valves (9) connected in parallel and an indoor unit (10); the direct-current frequency-conversion multi-connected multifunction air-conditioner further comprises a heat recovery unit, a heat pump water heater and a floor heat radiation heating device, wherein the heat recovery unit comprises a first water-refrigerant heat exchanger (13), a first hot water tank (14) and a water pump (15); the heat pump water heater comprises a fixed-frequency compressor (22), a second water-refrigerant heat exchanger (23), a throttling device (24), an evaporator (25) and a gas-liquid separator II (26); and the floor heat radiation heating device comprises a condensing coil (27), a second hot water tank (28) and a hot water radiation circulation device. Due to adoption of the direct-current frequency-conversion multi-connected multifunction air-conditioner, not only the energy is saved, but also the near-surface heating in winter is convenient.
Description
Technical field:
The utility model relates to air-conditioning technical field, specifically is the multi-joint machine multifunctional air-conditioning of a kind of DC frequency-changing.
Background technology:
The DC frequency-changing multi-gang air-conditioner comprises DC frequency-changeable compressor, gs-oil separator, cross valve, condenser, reservoir, stop valve, external gas-liquid separator, indoor expansion valve and many groups indoor expansion valve and indoor set in parallel; The exhaust end of described DC frequency-changeable compressor is communicated with the inlet end of gs-oil separator, and the outlet side of gs-oil separator is connected with cross valve; Other three ends of described cross valve are connected with external gas-liquid separator, condenser, indoor set respectively, and described condenser is connected with indoor set through reservoir, indoor expansion valve successively; Be connected with between described condenser and the reservoir and heat expansion valve.Adopt above-mentioned prior art, conventional DC frequency-changing multi-gang air-conditioner is when moving under the cooling condition summer, compressor is discharged the cold-producing medium of HTHP, cold-producing medium is condensation in condenser, high-temperature high-pressure refrigerant is converted into low-temperature low-pressure refrigerant, liberated heat directly is emitted on outdoor without utilization, caused the waste of this part waste heat, is unfavorable for energy-conservation; Winter is during heating condition, because the hot blast density that indoor set blows out is little, does not arrive people's foot and near the place, ground, causes not reaching the human comfort requirement in the temperature near the human foot, and just the temperature at near-earth plate place is lower, is not easy to warm oneself winter.
The utility model content:
The technical problems to be solved in the utility model provides when freezing a kind of summer and carries out recuperation of heat, can improve the multi-joint machine multifunctional air-conditioning of DC frequency-changing of temperature near the ground during winter refrigeration.
Technical solution of the present utility model is, the multi-joint machine multifunctional air-conditioning of DC frequency-changing of following structure is provided, comprises DC frequency-changeable compressor, gs-oil separator, cross valve, condenser, reservoir, external gas-liquid separator and many groups indoor expansion valve and indoor set in parallel.
Described DC frequency converting air-conditioner also comprises heat reclamation device, Teat pump boiler and floor heat radiation heating plant; Described heat reclamation device comprises first water-refrigerant heat exchanger, first boiler and water pump, described first water-refrigerant heat exchanger two ends that are communicated with at condenser in parallel, the water inlet of first water-refrigerant heat exchanger and delivery port are communicated with first boiler, and described water pump is arranged on the connecting pipe between the first water-refrigerant heat exchanger and first boiler; Described first water-refrigerant heat exchanger is provided with the refrigerant flow control valve near the connecting pipe of cross valve end; Described Teat pump boiler comprises invariable frequency compressor, second water-refrigerant heat exchanger, throttling arrangement, evaporimeter and gas-liquid separator II, the exhaust end of described invariable frequency compressor is communicated with second water-refrigerant heat exchanger, described second water-refrigerant heat exchanger is communicated with evaporimeter through throttling arrangement, and described evaporimeter is connected with the air return end of compressor through gas-liquid separator II; One end of described second water-refrigerant heat exchanger is connected in series with first water-refrigerant heat exchanger, and the other end is communicated with first boiler; The multi-joint machine multifunctional air-conditioning of described DC frequency-changing also comprises floor heat radiation heating plant, described floor heat radiation heating plant comprises condenser coil, second boiler and hot water radiation cycle device, described condenser coil and a plurality of indoor set are connected in parallel, condenser coil is positioned at second boiler, the two ends of condenser coil are provided with magnetic valve, and described second boiler is communicated with hot water radiation cycle device.
Adopt after the above structure compared with prior art, the utlity model has following advantage: adopt the utility model structure, heat reclamation device, Teat pump boiler and floor heat radiation heating plant have been increased, when summer, cooling condition moved, heat reclamation device can make the water in first boiler reach the demand temperature, does not just need to open Teat pump boiler; When heat reclamation device can't make water in the boiler reach the demand temperature, then open Teat pump boiler and simultaneously the water in first boiler is heated; When winter heating, heat reclamation device can't use, also needing to open Teat pump boiler heats first boiler, thereby make the water in first boiler satisfy the requirement of using, the utility model is not subjected to the influence of operating condition, water in first boiler can both be heated to the demand water temperature, heat reclamation device is played good supplementary function; Heat radiation heating plant in floor is opened and can be improved the temperature on ground by the radiant heat water pipe, thereby has improved heating effect.
As improvement, described hot water radiation cycle device comprises water pump, water knockout drum, radiant heat water pipe and water collector, the delivery port of second boiler is connected with water pump, described water pump is communicated with water knockout drum, water knockout drum is arranged on radiant heat water pipe water inlet place, and water collector is located at the exit of radiant heat water pipe and is communicated with second boiler.
As improvement, described refrigerant flow control valve is an electric T-shaped valve, and described electric T-shaped valve is communicated with cross valve, first water-refrigerant heat exchanger and condenser respectively; Can regulate the flow of the cold-producing medium that enters first water-refrigerant heat exchanger by triple valve, use convenient.
As improvement, the described first water-refrigerant heat exchanger and second water-refrigerant heat exchanger is double-tube heat exchanger.
As improvement, described throttling arrangement is an expansion valve, and like this, restriction effect is better.
Description of drawings:
Accompanying drawing is the structural representation of DC frequency converting air-conditioner of the present utility model.
Shown in the figure: 1, DC frequency-changeable compressor, 2, gs-oil separator, 3, cross valve, 4, condenser, 5, reservoir, 6, stop valve I, 7, external gas-liquid separator, 8, the oil return capillary, 9, indoor expansion valve, 10, indoor set, 11, gas-liquid separator I, 12, heat expansion valve, 13, first water-refrigerant heat exchanger, 14, first boiler, 15, water pump, 16, electric T-shaped valve, 17, check valve, 18, shower nozzle, 19, stop valve II, 20, the unloading magnetic valve, 21, the liquid bypass solenoid valve, 22, invariable frequency compressor, 23, second water-refrigerant heat exchanger, 24, throttling arrangement, 25, evaporimeter, 26, gas-liquid separator II, 27, condenser coil, 28, second boiler, 29, magnetic valve, 30, water knockout drum, 31, the radiant heat water pipe, 32, water collector, 33, water filter.
The specific embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
DC frequency converting air-conditioner of the present utility model is made up of the DC frequency-changeable compressor 1 that has gas-liquid separator I 11, gs-oil separator 2, cross valve 3, condenser 4, reservoir 5, stop valve I 6, external gas-liquid separator 7, oil return capillary 8, indoor expansion valve 9, a plurality of indoor set 10 and connecting pipe; The exhaust end of described DC frequency-changeable compressor 1 is communicated with the inlet end of gs-oil separator 2, and the oil revolving end of gs-oil separator 2 is communicated with through the gas-liquid separator I 11 that oil return capillary 8 and compressor 1 carry, and the outlet side of gs-oil separator 2 is connected with cross valve 3; Other three ends of described cross valve 3 are connected with external gas-liquid separator 7, condenser 4, indoor set 10 respectively, described external gas-liquid separator 7 is connected with gas-liquid separator I 11, described condenser 4 is connected with indoor set 10 through reservoir 5, indoor expansion valve 9 successively, and described reservoir 5 is connected with external gas-liquid separator 7 through capillary; Be connected with between described condenser 4 and the reservoir 5 and heat expansion valve 12.
Described DC frequency converting air-conditioner also comprises heat reclamation device, described heat reclamation device comprises first water-refrigerant heat exchanger 13, first boiler 14 and water pump 15, described first water-refrigerant heat exchanger 13 two ends that are communicated with at condenser 4 in parallel, the water inlet of first water-refrigerant heat exchanger 13 and delivery port are communicated with first boiler 14, and described water pump 15 is arranged on the connecting pipe between the first water-refrigerant heat exchanger 13 and first boiler 14; Described first water-refrigerant heat exchanger 13 is provided with the refrigerant flow control valve near the connecting pipe of cross valve 3 ends.
Described DC frequency converting air-conditioner also comprises Teat pump boiler, described Teat pump boiler comprises invariable frequency compressor 22, second water-refrigerant heat exchanger 23, throttling arrangement 24, evaporimeter 25 and gas-liquid separator II 26, the exhaust end of described invariable frequency compressor 22 is communicated with second water-refrigerant heat exchanger 23, described second water-refrigerant heat exchanger 23 is communicated with evaporimeter 25 through throttling arrangement 24, and described evaporimeter 25 is connected with the air return end of invariable frequency compressor 22 through gas-liquid separator II 26; One end of described second water-refrigerant heat exchanger 23 is connected in series with first water-refrigerant heat exchanger 13, and the other end is communicated with first boiler 14.
The multi-joint machine multifunctional air-conditioning of described DC frequency-changing also comprises floor heat radiation heating plant, described floor heat radiation heating plant comprises condenser coil 27, second boiler 28 and hot water radiation cycle device, described condenser coil 27 is connected in parallel with a plurality of indoor sets, condenser coil 27 is positioned at second boiler 28, the two ends of condenser coil 27 are provided with magnetic valve 29, and described second boiler 28 is communicated with hot water radiation cycle device.
Described hot water radiation cycle device comprises water pump, water knockout drum 30, radiant heat water pipe 31 and water collector 32, the delivery port of second boiler 28 is connected with water pump, described water pump is communicated with water knockout drum 30, water knockout drum 30 is arranged on radiant heat water pipe 31 water inlet places, and water collector 32 is located at the exit of radiant heat water pipe and is communicated with second boiler 28.
Described refrigerant flow control valve is an electric T-shaped valve 16, and described electric T-shaped valve 16 is communicated with cross valve 3, first water-refrigerant heat exchanger 13 and condenser 4 respectively.
The described first water-refrigerant heat exchanger 13 and second water-refrigerant heat exchanger 23 is double-tube heat exchanger.
Described throttling arrangement 24 is an expansion valve.
The delivery port of described first boiler 14 is connected with shower nozzle 18, like this, can utilize the hot water in first boiler 14 to have a bath.
Be provided with the check valve 17 in parallel between described condenser 4 and the reservoir 5 with heating expansion valve 12, like this, when air conditioner refrigerating, heating expansion valve has not needed throttling action, cold-producing medium just from condenser and through check valve to reservoir, the conducting direction of check valve is that condenser is to the reservoir direction; When air-conditioning heats, heat expansion valve and play throttling action, cold-producing medium is entered by reservoir and heats expansion valve (this moment, the direction of cold-producing medium was the direction that check valve ends), increases the control that check valve more helps throttling.
Operation principle of the present utility model: when the utility model moved under the cooling condition in summer, heat reclamation device can make the water in first boiler reach the demand temperature, just do not need to open Teat pump boiler, this moment, DC frequency-changeable compressor 1 was according to indoor set 10 required capacity adjustment running frequencies, the compressor air-discharging and the oil mixture of running quickly enter gs-oil separator 2 and carry out Oil-gas Separation, isolated lubricating oil enters the air return end of DC frequency-changeable compressor 1 by oil return capillary 8, remaining lubricating oil is regulated the flow of the cold-producing medium that enters condenser 4 and first water-refrigerant heat exchanger 13 by electric T-shaped valve 16 with exhaust, enter the high pressure, high temperature refrigerant heat release of first water-refrigerant heat exchanger 13 and to the water in first boiler 14 heating, water pump drives the back and forth circulation in first water-refrigerant heat exchanger 13 of water in first boiler 14; Cold-producing medium in first water-refrigerant heat exchanger 13 after the heat exchange converges with the cold-producing medium that enters condenser 4 and discharge through condensation, together by check valve 17 with heat expansion valve (this moment, expansion valve can't afford to drive throttling action entirely), enter high pressure reservoir 5 again, condensate liquid enters the indoor set 10 that needs operation through distribution, produce low-temperature low-pressure refrigerant and carry out heat exchange by indoor expansion valve 9 throttlings with room air, cold-producing medium enters external gas-liquid separator 7 by cross valve 3 afterwards, return compressor and carry gas-liquid separator I 11 and compressor 1 air return end, and so forth circulation.
When summer, cooling condition moved, when heat reclamation device can't make water in first boiler 14 reach the demand temperature, then opening Teat pump boiler heats the water in first boiler 14 simultaneously, the operation principle of heat reclamation device is narration in the above, here just do not add and give unnecessary details, this moment, the invariable frequency compressor 22 of Teat pump boiler was opened, the cold-producing medium of HTHP enters second water-refrigerant heat exchanger 23, water in first boiler circulates in first water-refrigerant heat exchanger 13 and second water-refrigerant heat exchanger 23 through water pump, the cold-producing medium heat exchange is after throttling arrangement 24 throttlings, become low-temperature low-pressure refrigerant and enter evaporimeter 25, get back to the air return end of invariable frequency compressor again through gas-liquid separator II.
When winter heating, heat reclamation device can't use, also needing to open Teat pump boiler heats first boiler, thereby make the water in first boiler satisfy the requirement of using, the utility model is not subjected to the influence of operating condition, water in first boiler can both be heated to the demand water temperature, heat reclamation device is played good supplementary function.
During the heating mode operation, the operation of floor heat radiation heating plant, cross valve 3 gets electric commutation, magnetic valve 29 must be established by cable and open, compressor 1 is according to indoor set 10 required capacity adjustment running frequencies, exhaust and compressor enter gs-oil separator 2 to oil mixture and carry out Oil-gas Separation, isolated lubricating oil enters DC frequency-changeable compressor 1 air return end by oil return capillary 8, remaining lubricating oil enters condenser coil 13 condensation heat releases in second boiler 28 with exhaust by cross valve 3 and magnetic valve 29, heat water in second boiler 28 to the temperature that requires, condensed cold-producing medium enters in the reservoir 5 by magnetic valve 29, condensate liquid becomes the cold-producing medium of low-temp low-pressure to enter to carry out evaporation and heat-exchange in the condenser 4 by heating expansion valve 12 throttlings, cold-producing medium after the evaporation enters external gas-liquid separator 7 by cross valve 3, return compressor 1 and carry gas-liquid separator 11 and compressor 1 muffler, the cold-producing medium of getting back to the DC frequency-changeable compressor air return end carries out compressor in compressor, discharge compressor again, carry out next circulation.This moment, indoor set 10 was also opened operate as normal; The water of second boiler drives through water pump and enters radiant heat water pipe 31, and radiant heat water pipe 31 arrives ground with the heat radiation of hot water, thereby has improved temperature near the ground, helps foot's heating.
Claims (5)
1. multi-joint machine multifunctional air-conditioning of DC frequency-changing, comprise DC frequency-changeable compressor (1), gs-oil separator (2), cross valve (3), condenser (4), external gas-liquid separator (7) and many groups indoor expansion valve (9) and indoor set (10) in parallel, it is characterized in that: described DC frequency converting air-conditioner also comprises heat reclamation device, Teat pump boiler and floor heat radiation heating plant; Described heat reclamation device comprises first water-refrigerant heat exchanger (13), first boiler (14) and water pump (15), described first water-refrigerant heat exchanger (13) two ends that are communicated with in condenser (4) in parallel, the water inlet of first water-refrigerant heat exchanger (13) and delivery port are communicated with first boiler (14), and described water pump (15) is arranged on the connecting pipe between first water-refrigerant heat exchanger (13) and first boiler (14); Described first water-refrigerant heat exchanger (13) is provided with the refrigerant flow control valve near the connecting pipe of cross valve end; Described Teat pump boiler comprises invariable frequency compressor (22), second water-refrigerant heat exchanger (23), throttling arrangement (24), evaporimeter (25) and gas-liquid separator II (26), the exhaust end of described invariable frequency compressor (22) is communicated with second water-refrigerant heat exchanger (23), described second water-refrigerant heat exchanger (23) is communicated with evaporimeter (25) through throttling arrangement (24), and described evaporimeter (25) is connected with the air return end of invariable frequency compressor (22) through gas-liquid separator II (26); One end of described second water-refrigerant heat exchanger (23) is connected in series with first water-refrigerant heat exchanger (13), and the other end is communicated with first boiler (14); Described floor heat radiation heating plant comprises condenser coil (27), second boiler (28) and hot water radiation cycle device, described condenser coil (27) is connected in parallel with a plurality of indoor sets (10), condenser coil (27) is positioned at second boiler, the two ends of condenser coil (27) are provided with magnetic valve (29), and described second boiler (28) is communicated with hot water radiation cycle device.
2. the multi-joint machine multifunctional air-conditioning of DC frequency-changing according to claim 1, it is characterized in that: described hot water radiation cycle device comprises water pump, water knockout drum (30), radiant heat water pipe (31) and water collector (32), the delivery port of second boiler (28) is connected with water pump, described water pump is communicated with water knockout drum (30), water knockout drum (30) is arranged on radiant heat water pipe (31) water inlet place, and water collector (32) is located at the exit of radiant heat water pipe (31) and is communicated with second boiler (28).
3. the multi-joint machine multifunctional air-conditioning of DC frequency-changing according to claim 1, it is characterized in that: described refrigerant flow control valve is electric T-shaped valve (16), and described electric T-shaped valve (16) is communicated with cross valve (3), first water-refrigerant heat exchanger (13) and condenser (4) respectively.
4. the multi-joint machine multifunctional air-conditioning of DC frequency-changing according to claim 1 is characterized in that: described first water-refrigerant heat exchanger (13) and second water-refrigerant heat exchanger (23) are double-tube heat exchanger.
5. the multi-joint machine multifunctional air-conditioning of DC frequency-changing according to claim 1 is characterized in that: described throttling arrangement (24) is an expansion valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201020525831 CN201819477U (en) | 2010-09-08 | 2010-09-08 | Direct-current frequency-conversional multi-connected multifunction air-conditioner |
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| CN 201020525831 CN201819477U (en) | 2010-09-08 | 2010-09-08 | Direct-current frequency-conversional multi-connected multifunction air-conditioner |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313397A (en) * | 2011-09-24 | 2012-01-11 | 广东美的电器股份有限公司 | Water heating machine system of heat recovery multi-gang heat pump air conditioner |
| CN102425882A (en) * | 2011-10-17 | 2012-04-25 | 广东美的电器股份有限公司 | Heat recovery multiple heat pump air-conditioning hot water machine and floor heating system |
| WO2012159475A1 (en) * | 2011-05-24 | 2012-11-29 | 宁波奥克斯电气有限公司 | Heat-pump, screw-compression, multi-connected central air-conditioning apparatus |
| CN102997367A (en) * | 2012-12-05 | 2013-03-27 | 宁波奥克斯电气有限公司 | Refrigerating starting method of multi-split air conditioner |
| CN103032912A (en) * | 2013-01-21 | 2013-04-10 | 中国科学院广州能源研究所 | Solar integrated Rankine-Rankine system floor heating device |
| CN104279802A (en) * | 2014-11-03 | 2015-01-14 | 陈万仁 | Fluid flow direction changing device for direct supply of radiant heat exchange of heat pump working medium |
| CN104713264A (en) * | 2013-12-11 | 2015-06-17 | 重庆美的通用制冷设备有限公司 | Air source heat pump set |
| CN105987501A (en) * | 2015-01-30 | 2016-10-05 | 青岛经济技术开发区海尔热水器有限公司 | Method for controlling electronic expansion valves in variable-frequency heat-pump water heater systems |
| CN106705489A (en) * | 2017-01-20 | 2017-05-24 | 上海理工大学 | Variable refrigerant flow system combined with air source heat pump hot water and control method of variable refrigerant flow system |
| CN109556215A (en) * | 2018-12-19 | 2019-04-02 | 邱宏祥 | A kind of connected radiation central air conditioner water heater group |
| CN113883579A (en) * | 2021-10-29 | 2022-01-04 | 青岛海信日立空调系统有限公司 | Water system air conditioner |
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2010
- 2010-09-08 CN CN 201020525831 patent/CN201819477U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012159475A1 (en) * | 2011-05-24 | 2012-11-29 | 宁波奥克斯电气有限公司 | Heat-pump, screw-compression, multi-connected central air-conditioning apparatus |
| CN102313397B (en) * | 2011-09-24 | 2014-01-01 | 广东美的电器股份有限公司 | Water heating machine system of heat recovery multi-gang heat pump air conditioner |
| CN102313397A (en) * | 2011-09-24 | 2012-01-11 | 广东美的电器股份有限公司 | Water heating machine system of heat recovery multi-gang heat pump air conditioner |
| CN102425882A (en) * | 2011-10-17 | 2012-04-25 | 广东美的电器股份有限公司 | Heat recovery multiple heat pump air-conditioning hot water machine and floor heating system |
| CN102997367A (en) * | 2012-12-05 | 2013-03-27 | 宁波奥克斯电气有限公司 | Refrigerating starting method of multi-split air conditioner |
| CN102997367B (en) * | 2012-12-05 | 2014-12-03 | 宁波奥克斯电气有限公司 | Refrigerating starting method of multi-split air conditioner |
| CN103032912A (en) * | 2013-01-21 | 2013-04-10 | 中国科学院广州能源研究所 | Solar integrated Rankine-Rankine system floor heating device |
| CN103032912B (en) * | 2013-01-21 | 2014-12-10 | 中国科学院广州能源研究所 | Solar integrated Rankine-Rankine system floor heating device |
| CN104713264B (en) * | 2013-12-11 | 2017-05-03 | 重庆美的通用制冷设备有限公司 | Air source heat pump set |
| CN104713264A (en) * | 2013-12-11 | 2015-06-17 | 重庆美的通用制冷设备有限公司 | Air source heat pump set |
| CN104279802A (en) * | 2014-11-03 | 2015-01-14 | 陈万仁 | Fluid flow direction changing device for direct supply of radiant heat exchange of heat pump working medium |
| CN105987501A (en) * | 2015-01-30 | 2016-10-05 | 青岛经济技术开发区海尔热水器有限公司 | Method for controlling electronic expansion valves in variable-frequency heat-pump water heater systems |
| CN105987501B (en) * | 2015-01-30 | 2019-07-23 | 青岛经济技术开发区海尔热水器有限公司 | The control method of electric expansion valve in frequency conversion heat pump water heater system |
| CN106705489A (en) * | 2017-01-20 | 2017-05-24 | 上海理工大学 | Variable refrigerant flow system combined with air source heat pump hot water and control method of variable refrigerant flow system |
| CN109556215A (en) * | 2018-12-19 | 2019-04-02 | 邱宏祥 | A kind of connected radiation central air conditioner water heater group |
| CN113883579A (en) * | 2021-10-29 | 2022-01-04 | 青岛海信日立空调系统有限公司 | Water system air conditioner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |