CN106885388B - A kind of air-conditioning system - Google Patents
A kind of air-conditioning system Download PDFInfo
- Publication number
- CN106885388B CN106885388B CN201510950003.6A CN201510950003A CN106885388B CN 106885388 B CN106885388 B CN 106885388B CN 201510950003 A CN201510950003 A CN 201510950003A CN 106885388 B CN106885388 B CN 106885388B
- Authority
- CN
- China
- Prior art keywords
- evaporator
- pipeline
- air
- indoor units
- conditioning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/027—Compressor control by controlling pressure
- F25B2600/0272—Compressor control by controlling pressure the suction pressure
Abstract
The present invention provides a kind of air-conditioning systems, including：Outdoor unit and indoor units；Outdoor unit includes a compressor, a condenser and a liquid storage device；The exhaust outlet of the first end connect compressor of condenser, second end connect the air inlet of indoor units；The leakage fluid dram of the first end connection indoor units of liquid storage device, the compression chamber of second end connect compressor；Indoor units include one first pipeline and one second pipeline of parallel connection, and the first pipeline includes concatenated 1 first electric expansion valve, one first evaporator and a counterbalance valve, and counterbalance valve reduces the pressure of the first evaporator outlet；Second pipeline includes concatenated 1 second electric expansion valve and one second evaporator, and the evaporating temperature of the first evaporator is higher than the evaporating temperature of the second evaporator.The air-conditioning system of the present invention can ensure that the evaporator outlet of two different evaporating pressures is identical evaporating pressure, avoid the mixing of suction side from pulsing, maintain the steady of suction side, ensure that reliability.
Description
Technical field
The present invention relates to a kind of air-conditioning system, more particularly to there are two the air-conditioning systems of evaporating temperature for a kind of tool.
Background technology
Currently, using wet air condensation dehumanization method exclude interior more than it is wet, evaporator surface temperature need be less than Interior Space
The dew-point temperature of gas considers that heat transfer temperature difference and medium convey the temperature difference, such as realize 16.6 DEG C of dew-point temperature need about 7 DEG C it is below
Evaporating temperature.Often in order to achieve the purpose that dehumidifying, evaporating temperature is reduced as possible, for compressor, pressure ratio increases, and enters power increasing
Add, operation is uneconomical.Meanwhile system keeps indoor leaving air temp relatively low, people to reach the relatively low evaporating temperature of dehumidifying purpose
Body comfort is poor.
Invention content
For the defects in the prior art, the purpose of the present invention is to provide a kind of air-conditioning system, the prior art is overcome
Difficulty, can suitably adjust two evaporating temperatures according to the variation of indoor load, one of evaporator is made to maintain for a long time
It is operated in higher evaporating temperature, the heating energy efficiency ratio of system overall operation can be improved.
According to an aspect of the present invention, a kind of air-conditioning system is provided, including：Outdoor unit and indoor units；
The outdoor unit includes a compressor, a condenser and a liquid storage device；The first end of the condenser connects
The exhaust outlet of the compressor, second end connect the air inlet of the indoor units；Described in the first end connection of the liquid storage device
The leakage fluid dram of indoor units, second end connect the compression chamber of the compressor；
The indoor units include one first pipeline and one second pipeline of parallel connection, and first pipeline includes concatenated one
First electric expansion valve, one first evaporator and a counterbalance valve, the counterbalance valve reduce the pressure of first evaporator outlet
Power；Second pipeline includes concatenated 1 second electric expansion valve and one second evaporator, the evaporation of first evaporator
Temperature is higher than the evaporating temperature of second evaporator.
Preferably, the pressure of the leakage fluid dram of first pipeline is identical as the pressure of leakage fluid dram of the second pipeline.
Preferably, first evaporator operation is in sensible heat load, and second evaporator operation is in latent heat load.
Preferably, in first pipeline refrigerant successively pass through first electric expansion valve, the first evaporator and
Counterbalance valve.
Preferably, refrigerant passes through second electric expansion valve and the second evaporator successively in second pipeline.
Preferably, the outdoor unit further includes one first fan, and the condenser is passed through in the air duct of first fan.
Preferably, the indoor units include an indoor unit, first evaporator and the common position of the second evaporator
In the indoor unit.
Preferably, the indoor units further include one second fan, and the air duct of second fan is steamed by described first
Send out device.
Preferably, the air duct of second fan first passes through first evaporator, after by second evaporator.
Preferably, the indoor units include a sensible heat indoor unit and a latent heat indoor unit, and first evaporator is located at
The sensible heat indoor unit, second evaporator are located at the latent heat indoor unit.
Preferably, the indoor units further include one second fan and a third fan, the air duct warp of second fan
First evaporator is crossed, second evaporator is passed through in the air duct of the third fan.
Due to the use of the above technology, two evaporators are arranged by indoor in air-conditioning system of the invention, are respectively set
Different evaporating temperatures achievees the purpose that dehumidifying, cooling.The leaving air temp of indoor is moderate, and comfort improves, and can protect
The evaporator outlet of the different evaporating pressures of card two is identical evaporating pressure, avoids different pressures of inspiration(Pi) and is inhaled in compressor
The mixing of gas side is pulsed, and is maintained the steady of suction side, be ensure that compressor reliability.
Description of the drawings
Technical scheme of the present invention is described in detail below in conjunction with the drawings and specific embodiments, so that the present invention
Characteristics and advantages become apparent.
Fig. 1 is the connection diagram of the air-conditioning system of the first embodiment of the present invention；And
Fig. 2 is the connection diagram of the air-conditioning system of the second embodiment of the present invention.
Reference numeral
10 outdoor units
11 compressors
12 exhaust outlets
13 condensers
14 first fans
15 liquid storage devices
16 compression chambers
20 indoor units
21 first electric expansion valves
22 first evaporators
23 second fans
24 counterbalance valves
25 second electric expansion valves
26 second evaporators
27 third fans
The air inlet of A indoor units
The leakage fluid dram of B indoor units
The leakage fluid dram of the first pipelines of C
The leakage fluid dram of the second pipelines of D
The air duct of the first fans of E
The air duct of the second fans of F
The air duct of G third fans
Specific implementation mode
Detailed description will be provided to the embodiment of the present invention below.Although the present invention will combine some specific implementation modes
It is illustrated and illustrates, but should be noted that the present invention is not merely confined to these embodiments.On the contrary, to the present invention
The modification of progress or equivalent replacement, are intended to be within the scope of the claims of the invention.
In addition, in order to better illustrate the present invention, numerous details is given in specific implementation mode below.
It will be understood by those skilled in the art that without these details, the present invention can equally be implemented.It is right in other example
It is not described in detail in known structure and component, in order to highlight the purport of the present invention.
First embodiment
Fig. 1 is the connection diagram of the air-conditioning system of the first embodiment of the present invention.As shown in Figure 1, one kind of the present invention
Air-conditioning system, including：Outdoor unit 10 and indoor units 20.Wherein, outdoor unit 10 includes a compressor 11, a condenser
13, one first fan 14 and a liquid storage device 15.The exhaust outlet 12 of the first end connect compressor 11 of condenser 13, second end connect
Meet the air inlet A of indoor units 20.The leakage fluid dram B of the first end connection indoor units 20 of liquid storage device 15, second end connection compression
The compression chamber 16 of machine 11.The air duct E of first fan 14 passes through condenser 13.
Indoor units 20 include one first pipeline and one second pipeline of parallel connection, and the first pipeline includes concatenated 1 first electricity
Sub- expansion valve 21, one first evaporator 22 and a counterbalance valve 24, counterbalance valve 24 reduce the pressure of the first evaporator 22 outlet.The
Refrigerant passes through the first electric expansion valve 21, the first evaporator 22 and counterbalance valve 24 successively in one pipeline.Second pipeline includes
The evaporating temperature of concatenated 1 second electric expansion valve 25 and one second evaporator 26, the first evaporator 22 is higher than the second evaporator
26 evaporating temperature.Refrigerant passes through the second electric expansion valve 25 and the second evaporator 26 successively in second pipeline.First electronics
Expansion valve 21 adjusts the refrigerant flow that the first evaporator 22 is flowed into the first pipeline, and the second electric expansion valve 25 adjusts the second pipe
The refrigerant flow that the second evaporator 26 is flowed into road, to realize the different evaporating temperature of two evaporators.In the present embodiment.The
One evaporator 22 operates mainly in sensible heat load, and the second evaporator 26 operates mainly in latent heat load.
In the first pipeline, counterbalance valve 24 (Back Pressure Valve) is realized dynamic by the elastic force of built-in spring
Make：Refrigerant is flowed into from the import of counterbalance valve 24, when the pressure ratio preset pressure of the first evaporator 22 outlet is big, counterbalance valve 24
In diaphragm compressed spring, pipeline connect, some refrigerant enter another pipeline, to reduce the exit of counterbalance valve 24
The pressure of (i.e. the leakage fluid dram C of the first pipeline).In the present embodiment, back pressure valve arrangement is similar with check valve, but Opening pressure is big
In check valve, between 0.2 to 1.6 megapascal, but not limited to this.By this connection structure, counterbalance valve 24 can be controlled effectively
The pressure of first evaporator 22 outlet so that the pressure phase of the pressure of the leakage fluid dram C of the first pipeline and the leakage fluid dram D of the second pipeline
Together.After the two-way refrigerant mixing for flowing out the first pipeline and the second pipeline, the common compression chamber 16 (suction side) for entering compressor,
Mixing so as to avoid different pressures of inspiration(Pi) in suction side is pulsed, and the steady of suction side is maintained, and is protected
Compressor reliability is demonstrate,proved.
Indoor units 20 further include an indoor unit and one second fan 23, the first evaporator 22, the second evaporator 26 and
Two fans 23 can be co-located at indoor unit.The air duct F of second fan 23 first passes through the first evaporator 22, after by second evaporation
Device 26, but not limited to this.The air duct F of second fan 23 can also be merely through the first evaporator 22.
The specific implementation mode of the present invention is as follows：
Indoor evaporator of the present invention is divided into two parts：First evaporator 22 is that high-temperature evaporator (mainly undertakes sensible heat
Load), the second evaporator 26 is cryogenic vaporizer (mainly undertaking latent heat load).After compressor air-discharging enters condenser 13, point
Two-way respectively enters the evaporator of two different evaporating temperatures, the system of evaporator is entered by respective electronic expansion valve regulation
The air quantity of cryogen flow and indoor unit realizes the first evaporator 22 and the second evaporator 26 the evaporation temperature that be operated in two different
Degree；Simultaneously in one counterbalance valve of the evaporator (the first evaporator 22) of higher evaporating temperature outlet setting, by the refrigeration of counterbalance valve
Agent outlet pressure and the refrigerant pressure of relatively low evaporator (the second evaporator 26) outlet are close；After the mixing of two-way refrigerant, into
Enter the compression chamber 16 (suction side) of compressor.
Conventional press can be used in the system compressors of the present invention；The setting of counterbalance valve can make the room of higher evaporating pressure
Interior machine outlet pressure reduces, and close to another lower evaporating pressure, realizes that the evaporator outlet of two different evaporating pressures is
Identical evaporating pressure；The mixing that different pressures of inspiration(Pi) is avoided in suction side is pulsed, and compressor air suction is maintained
Side it is steady, ensure that compressor reliability.
The present invention suitably adjusts two evaporating temperatures according to the variation of indoor load, makes one of evaporator for a long time
Higher evaporating temperature operating is maintained, the heating energy efficiency ratio of system overall operation can be improved.
Second embodiment
Fig. 2 is the connection diagram of the air-conditioning system of the second embodiment of the present invention.As shown in Fig. 2, the present invention's is another
Kind air-conditioning system, is identical with the first embodiment, which includes：Outdoor unit 10 and indoor units 20.Wherein, room
Outer unit 10 includes a compressor 11, a condenser 13, one first fan 14 and a liquid storage device 15.The first end of condenser 13
The exhaust outlet 12 of connect compressor 11, second end connect the air inlet A of indoor units 20.The first end of liquid storage device connects indoor unit
The leakage fluid dram B of group 20, the compression chamber 16 of second end connect compressor 11.The air duct E of first fan 14 passes through condenser 13.
Indoor units 20 include one first pipeline and one second pipeline of parallel connection, and the first pipeline includes concatenated 1 first electricity
Sub- expansion valve 21, one first evaporator 22 and a counterbalance valve 24, counterbalance valve 24 reduce the pressure of the first evaporator 22 outlet.The
Refrigerant passes through the first electric expansion valve 21, the first evaporator 22 and counterbalance valve 24 successively in one pipeline.Second pipeline includes
The evaporating temperature of concatenated 1 second electric expansion valve 25 and one second evaporator 26, the first evaporator 22 is higher than the second evaporator
26 evaporating temperature.Refrigerant passes through the second electric expansion valve 25 and the second evaporator 26 successively in second pipeline.First electronics
Expansion valve 21 adjusts the refrigerant flow that the first evaporator 22 is flowed into the first pipeline, and the second electric expansion valve 25 adjusts the second pipe
The refrigerant flow that the second evaporator 26 is flowed into road, to realize the different evaporating temperature of two evaporators.In the present embodiment.The
One evaporator 22 works in sensible heat load, and the second evaporator 26 works in latent heat load.
In the first pipeline, counterbalance valve 24 (Back Pressure Valve) is realized dynamic by the elastic force of built-in spring
Make：Refrigerant is flowed into from the import of counterbalance valve 24, when the pressure ratio preset pressure of the first evaporator 22 outlet is big, counterbalance valve 24
In diaphragm compressed spring, pipeline connect, some refrigerant enter another pipeline, to reduce the exit of counterbalance valve 24
The pressure of (i.e. the leakage fluid dram C of the first pipeline).In the present embodiment, back pressure valve arrangement is similar with check valve, but Opening pressure is big
In check valve, between 0.2 to 1.6 megapascal, but not limited to this.By this connection structure, counterbalance valve 24 can be controlled effectively
The pressure of first evaporator 22 outlet so that the pressure phase of the pressure of the leakage fluid dram C of the first pipeline and the leakage fluid dram D of the second pipeline
Together.After the two-way refrigerant mixing for flowing out the first pipeline and the second pipeline, the common compression chamber 16 (suction side) for entering compressor,
Mixing so as to avoid different pressures of inspiration(Pi) in suction side is pulsed, and the steady of suction side is maintained, and is protected
Compressor reliability is demonstrate,proved.
Different from the first embodiment in the air-conditioning system of the second embodiment of the present invention, indoor units 20 include one
Sensible heat indoor unit, a latent heat indoor unit, one second fan 23 and a third fan 27.First evaporator 22 and the second fan 23
Positioned at sensible heat indoor unit, the air duct F of the second fan 23 passes through the first evaporator 22.Second evaporator 26 and third fan 27 are located at
The air duct G of latent heat indoor unit, third fan 27 passes through the second evaporator 26.Air-conditioning system in second embodiment is adopted
With two independent indoor units：Sensible heat indoor unit (higher evaporating temperature) and latent heat indoor unit (lower evaporating temperature).This
Sensible heat indoor unit and latent heat indoor unit in embodiment can be distributed in the different zones of the same interior space, be conducive in subregion
In the case of carry out the control of humidity, humidity respectively.
In summary, two evaporators are arranged by indoor in air-conditioning system of the invention, and different evaporations is respectively set
Temperature achievees the purpose that dehumidifying, cooling.The leaving air temp of indoor is moderate, and comfort improves, and can ensure two differences
The evaporator outlet of evaporating pressure is identical evaporating pressure, avoids mixing of the different pressures of inspiration(Pi) in suction side
Pulsation, maintains the steady of suction side, ensure that compressor reliability.
The specific application example that the above is only the present invention, is not limited in any way protection scope of the present invention.Except above-mentioned
Outside embodiment, the present invention can also have other embodiment.All technical solutions formed using equivalent substitution or equivalent transformation,
It falls within scope of the present invention.
Claims (10)
1. a kind of air-conditioning system, which is characterized in that including：Outdoor unit (10) and indoor units (20)；
The outdoor unit (10) includes a compressor (11), a condenser (13) and a liquid storage device (15)；The condenser
(13) first end connects the exhaust outlet (12) of the compressor (11), and second end connects the air inlet of the indoor units (20)
(A)；The first end of the liquid storage device (15) connects the leakage fluid dram (B) of the indoor units (20), and second end connects the compression
The compression chamber (16) of machine (11)；
The indoor units (20) include one first pipeline and one second pipeline of parallel connection, and first pipeline includes concatenated one
First electric expansion valve (21), one first evaporator (22) and a counterbalance valve (24), the counterbalance valve (24) reduce described the
The pressure of one evaporator (22) outlet is extremely identical as the pressure of leakage fluid dram of the second pipeline；Second pipeline includes series connection
One second electric expansion valve (25) and one second evaporator (26), the evaporating temperature of first evaporator (22) is higher than described
The evaporating temperature of second evaporator (26)；
The pressure of the leakage fluid dram (C) of first pipeline and the pressure of the leakage fluid dram (D) of second pipeline are identical and described
The leakage fluid dram (C) of first pipeline is connected to the leakage fluid dram of the indoor units (20) with the leakage fluid dram (D) of second pipeline
(B)。
2. air-conditioning system as described in claim 1, it is characterised in that：First evaporator (22) works in sensible heat load,
Second evaporator (26) works in latent heat load.
3. air-conditioning system as claimed in claim 2, it is characterised in that：Refrigerant passes through described the successively in first pipeline
One electric expansion valve (21), the first evaporator (22) and counterbalance valve (24).
4. air-conditioning system as claimed in claim 2, it is characterised in that：Refrigerant passes through described the successively in second pipeline
Two electric expansion valves (25) and the second evaporator (26).
5. air-conditioning system as described in claim 1, it is characterised in that：The outdoor unit (10) further includes one first fan
(14), the air duct (E) of first fan (14) is by the condenser (13).
6. the air-conditioning system as described in any one of claim 1 to 5, it is characterised in that：The indoor units (20) include
One indoor unit, first evaporator (22) and second evaporator (26) are co-located at the indoor unit.
7. air-conditioning system as claimed in claim 6, it is characterised in that：The indoor units (20) further include one second fan
(23), first evaporator (22) is passed through in the air duct (F) of second fan (23).
8. air-conditioning system as claimed in claim 7, it is characterised in that：The air duct (F) of second fan (23) first passes through institute
State the first evaporator (22), after by second evaporator (26).
9. the air-conditioning system as described in any one of claim 1 to 5, it is characterised in that：The indoor units (20) include
One sensible heat indoor unit and a latent heat indoor unit, first evaporator (22) are located at the sensible heat indoor unit, second evaporation
Device (26) is located at the latent heat indoor unit.
10. air-conditioning system as claimed in claim 9, it is characterised in that：The indoor units (20) further include one second fan
(23) and first evaporator (22), the third are passed through in a third fan (27), the air duct (F) of second fan (23)
Second evaporator (26) is passed through in the air duct (G) of fan (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950003.6A CN106885388B (en) | 2015-12-16 | 2015-12-16 | A kind of air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950003.6A CN106885388B (en) | 2015-12-16 | 2015-12-16 | A kind of air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106885388A CN106885388A (en) | 2017-06-23 |
| CN106885388B true CN106885388B (en) | 2018-07-27 |
Family
ID=59176264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510950003.6A Active CN106885388B (en) | 2015-12-16 | 2015-12-16 | A kind of air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106885388B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398043B (en) * | 2018-04-25 | 2022-06-14 | 三花控股集团有限公司 | Thermal management system and control method thereof |
| CN109340961A (en) * | 2018-09-27 | 2019-02-15 | 四川长虹电器股份有限公司 | A kind of Novel intelligent air conditioner system and control method |
| CN114087745B (en) * | 2020-07-29 | 2023-09-26 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method, control device and readable storage medium |
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|---|---|---|---|---|
| CN1136350A (en) * | 1994-10-05 | 1996-11-20 | 株式会社日立制作所 | Air-conditioner |
| CN1991276A (en) * | 2005-12-26 | 2007-07-04 | 日立空调·家用电器株式会社 | Air adjustor |
| CN102103384A (en) * | 2009-12-16 | 2011-06-22 | 大连森和节能环保科技有限公司 | Device and method for controlling temperature and pressure of reactor of hypercritical water treatment system |
| CN104061725A (en) * | 2014-05-29 | 2014-09-24 | 张红霞 | Improved liquid receiver for air condition compressor |
| CN104251515A (en) * | 2013-06-25 | 2014-12-31 | 上海日立电器有限公司 | Household air conditioner refrigerating system capable of separately controlling latent heat and sensible heat |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339513A (en) * | 1997-06-06 | 1998-12-22 | Sanyo Electric Co Ltd | Air conditioning system |
| EP2334995A4 (en) * | 2008-10-02 | 2014-04-02 | Carrier Corp | Start-up for refrigerant system with hot gas reheat |
-
2015
- 2015-12-16 CN CN201510950003.6A patent/CN106885388B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136350A (en) * | 1994-10-05 | 1996-11-20 | 株式会社日立制作所 | Air-conditioner |
| CN1991276A (en) * | 2005-12-26 | 2007-07-04 | 日立空调·家用电器株式会社 | Air adjustor |
| CN102103384A (en) * | 2009-12-16 | 2011-06-22 | 大连森和节能环保科技有限公司 | Device and method for controlling temperature and pressure of reactor of hypercritical water treatment system |
| CN104251515A (en) * | 2013-06-25 | 2014-12-31 | 上海日立电器有限公司 | Household air conditioner refrigerating system capable of separately controlling latent heat and sensible heat |
| CN104061725A (en) * | 2014-05-29 | 2014-09-24 | 张红霞 | Improved liquid receiver for air condition compressor |
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| Publication number | Publication date |
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| CN106885388A (en) | 2017-06-23 |
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Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
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