CN113776178A - Refrigerating unit and air cooler heat recovery system and working method thereof - Google Patents
Refrigerating unit and air cooler heat recovery system and working method thereof Download PDFInfo
- Publication number
- CN113776178A CN113776178A CN202111075839.8A CN202111075839A CN113776178A CN 113776178 A CN113776178 A CN 113776178A CN 202111075839 A CN202111075839 A CN 202111075839A CN 113776178 A CN113776178 A CN 113776178A
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- air supply
- condenser
- air
- plate
- heat recovery
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- 238000011084 recovery Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010257 thawing Methods 0.000 claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 241000883990 Flabellum Species 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The invention relates to the technical field of waste heat recovery and utilization, in particular to a refrigerating unit and air cooler heat recovery system and a working method thereof; one end of the hot air pipeline is corresponding to the hot air exhaust port, the other end of the hot air pipeline is provided with the air supply plate, the air supply plate is provided with a plurality of air supply holes, the air supply holes are corresponding to the condenser, the air supply plate is installed on the support rod through the connecting piece, the air supply plate is located between the fan blades and the condenser, when defrosting is needed to the condenser, the hot air output by the refrigerating unit is conveyed to the outside of the air supply plate through the hot air pipeline, then the hot air output by the air supply holes is used for defrosting the condenser, the heat generated by the refrigerating unit is reasonably utilized, and the energy waste is reduced.
Description
Technical Field
The invention relates to the technical field of waste heat recovery and utilization, in particular to a refrigerating unit, an air cooler heat recovery system and a working method thereof.
Background
The refrigeration components consisting of a compressor, a condenser and an evaporator, a fan and other parts are mostly installed in the existing refrigeration equipment, a bottom plate is provided with a housing to form an evaporation cavity, and the evaporator is located in the evaporation cavity.
In the current design of the refrigeration system, most of the heat discharged by the refrigeration unit is directly discharged to the atmosphere through the condenser, so that energy waste is caused.
Disclosure of Invention
The invention aims to provide a refrigerating unit, an air cooler heat recovery system and a working method thereof, and solves the problem that in the prior art, most of heat discharged by the refrigerating unit is directly discharged to the atmosphere through a condenser in the current refrigerating system design, so that energy is wasted.
In order to achieve the purpose, the invention provides a refrigerating unit and an air cooler heat recovery system, which comprises a shell, a refrigerating unit, a condenser, fan blades and a heat recovery and utilization device, wherein the refrigerating unit, the condenser and the fan blades are arranged in the shell;
the heat recycling device comprises a hot air pipeline, an air supply plate and a support rod, one end of the hot air pipeline corresponds to the hot air exhaust port, the other end of the hot air pipeline is provided with the air supply plate, the air supply plate is provided with a plurality of air supply holes, the air supply holes correspond to the condenser, the support rod is arranged inside the shell, the support rod is located between the fan blades and the condenser, a connecting piece is sleeved on the support rod, and the connecting piece is detachably connected with the air supply plate.
Through the connecting piece will the air supply board is installed on the bracing piece, make the air supply board be located between the flabellum and the condenser, when needs are right the condenser carries out the defrosting, through hot-blast pipeline will the hot-blast transport of refrigerating unit output extremely the outside of air supply board, and then pass through the hot-blast right of air supply hole output the condenser carries out the defrosting, rationally utilizes the heat that refrigerating unit produced reduces the waste of the energy.
The connecting piece comprises a connecting plate, a supporting plate and a connecting ring, one end of the supporting plate is fixedly connected with the connecting plate, the other end of the supporting plate is fixedly connected with the connecting ring, the connecting ring is sleeved outside the supporting rod, and the connecting plate is detachably connected with the air supply plate.
And after the connecting ring is sleeved outside the supporting rod, the connecting plate and the air supply plate are fixed by using screws, so that the air supply plate is arranged between the fan blades and the condenser.
The fan blade air supply device comprises a fan blade, a condenser, an air supply plate, a fan blade, a pushing assembly and an air supply plate, wherein the pushing assembly is arranged in the shell and located between the fan blade and the condenser, and the output end of the pushing assembly is detachably connected with the air supply plate.
Because the output that promotes the subassembly with air supply plate dismantles and connects, starts promote the subassembly, make air supply plate is in translation on the bracing piece, thereby enlarge air supply range of air supply plate, it is right the defrosting effect of condenser is better.
The air supply device comprises a shell, a fan blade, a condenser, a fan blade, a first servo motor, a lead screw sleeve, a pushing assembly and a fan blade, wherein the pushing assembly comprises a placing plate, the first servo motor, the lead screw and the lead screw sleeve, the placing plate is detachably connected with the shell and is located between the fan blade and the condenser, the first servo motor is arranged on the placing plate, the output end of the first servo motor is provided with the lead screw, the lead screw sleeve is arranged on the lead screw, and the lead screw sleeve is detachably connected with the air supply plate.
And starting the first servo motor to drive the screw rod to rotate, and because the screw rod sleeve is detachably connected with the air supply plate, the air supply plate is enabled to translate on the supporting rod.
Wherein, hot-blast pipeline includes first connecting pipe, three-way valve, exhaust pipe and coupling hose, the one end of first connecting pipe with hot-blast gas vent dismantles to be connected, the other end of first connecting pipe is provided with the three-way valve, the three-way valve is kept away from the both ends of first connecting pipe respectively with the exhaust pipe with coupling hose dismantles to be connected, the exhaust pipe runs through the shell, coupling hose keeps away from the one end of three-way valve with air supply plate dismantles to be connected.
When the condenser is not required to be defrosted, the three-way valve is started, so that the first connecting pipe and the exhaust pipe are unblocked, hot air generated by the refrigerating unit is exhausted to the outside of the shell, and when the condenser is required to be defrosted, the three-way valve is started, so that the first connecting pipe and the connecting hose are unblocked, hot air is conveyed to the air supply plate, and the air supply hole is used for defrosting the condenser.
The invention also provides a working method adopting the refrigerating unit and the air cooler heat recovery system, which comprises the following steps:
when defrosting of the condenser is not needed, the three-way valve is started, so that the first connecting pipe and the exhaust pipe are unblocked, and hot air generated by the refrigerating unit is exhausted to the outside of the shell;
when the condenser needs to be defrosted, the three-way valve is started, so that the first connecting pipe and the connecting hose are smooth, hot air is conveyed into the air supply plate, and the condenser is defrosted by the air supply hole;
when defrosting, start the promotion subassembly to promote the air feed plate is in remove on the bracing piece, and then more comprehensive right each position of condenser is defrosted, makes the defrosting effect better.
When the defrosting is carried out on the condenser, the three-way valve is started, so that the first connecting pipe and the exhaust pipe are unblocked, hot air generated by the refrigerating unit is exhausted to the outside of the shell, when the defrosting is carried out on the condenser, the three-way valve is started, so that the first connecting pipe and the connecting hose are unblocked, hot air is conveyed to the air supply plate, the condenser is defrosted through the air supply hole, the pushing assembly is started when the defrosting is carried out, the air supply plate is pushed to move on the support rod, and then the defrosting is carried out on each position of the condenser more comprehensively, so that the defrosting effect is better.
According to the refrigeration unit and air cooler heat recovery system and the working method thereof, one end of the hot air pipeline corresponds to the hot air exhaust port, the air supply plate is arranged at the other end of the hot air pipeline, the air supply plate is provided with the air supply holes, the air supply holes correspond to the condenser, the air supply plate is arranged on the support rod through the connecting piece, the air supply plate is located between the fan blade and the condenser, when the condenser needs to be defrosted, the hot air output by the refrigeration unit is conveyed to the outside of the air supply plate through the hot air pipeline, the condenser is defrosted through the hot air output by the air supply holes, the heat generated by the refrigeration unit is reasonably utilized, and the waste of energy is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a refrigeration unit and air cooler heat recovery system provided by the present invention.
Fig. 2 is a sectional view of the internal structure taken along line a-a of fig. 1 according to the present invention.
Fig. 3 is a schematic view of the internal structure of the housing provided by the present invention.
Fig. 4 is an enlarged view of a portion of the structure of fig. 3 a according to the present invention.
Fig. 5 is a schematic structural diagram of the heat recycling device provided by the present invention.
Fig. 6 is an enlarged view of a portion of the structure of fig. 5 a according to the present invention.
Fig. 7 is a flowchart illustrating steps of a method for recovering heat of a refrigeration unit and an air cooler according to the present invention.
1-shell, 2-refrigerating unit, 21-condensed gas exhaust port, 22-hot air exhaust port, 23-cold air pipeline, 3-condenser, 4-fan blade, 5-heat recycling device, 51-hot air pipeline, 511-first connecting pipe, 512-three-way valve, 513-exhaust pipe, 514-connecting hose, 52-air supply plate, 521-air supply hole, 53-supporting rod, 531-connecting piece, 532-connecting plate, 533-supporting plate, 534-connecting ring, 6-pushing component, 61-placing plate, 62-first servo motor, 63-screw rod, 64-screw rod sleeve, 65-supporting frame, 7-adjusting device, 71-second servo motor, 72-gear reducer, 73-adjusting component, etc, 74-placing block, 75-adjusting sheet, 76-coupler and 77-rotating shaft.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 6, the present invention provides a refrigeration unit 2 and a cold air blower heat recovery system, where the refrigeration unit 2 and the cold air blower heat recovery system include a housing 1, a refrigeration unit 2, a condenser 3, fan blades 4 and a heat recovery and utilization device 5, the refrigeration unit 2, the condenser 3 and the fan blades 4 are disposed inside the housing 1, a condensed gas exhaust port 21 and a hot air exhaust port 22 are disposed on the refrigeration unit 2, a cold air pipeline 23 is disposed between the condensed gas exhaust port 21 and an air inlet end of the condenser 3, and an output end of the fan blade 4 corresponds to the condenser 3;
the heat recycling device 5 comprises a hot air pipeline 51, an air supply plate 52 and a support rod 53, one end of the hot air pipeline 51 corresponds to the hot air exhaust port 22, the other end of the hot air pipeline 51 is provided with the air supply plate 52, a plurality of air supply holes 521 are formed in the air supply plate 52, the air supply holes 521 correspond to the condenser 3, the support rod 53 is further arranged inside the shell 1, the support rod 53 is located between the fan blades 4 and the condenser 3, a connecting piece 531 is sleeved on the support rod 53, and the connecting piece 531 is detachably connected with the air supply plate 52.
In this embodiment, the air supply plate 52 is installed on the support rod 53 through the connection member 531, so that the air supply plate 52 is located between the fan blade 4 and the condenser 3, when the condenser 3 needs to be defrosted, the hot air output by the refrigeration unit 2 is conveyed to the outside of the air supply plate 52 through the hot air pipeline 51, and then the condenser 3 is defrosted through the hot air output by the air supply hole 521, so that the heat generated by the refrigeration unit 2 is reasonably utilized, and the waste of energy is reduced.
Further, the connecting member 531 includes a connecting plate 532, a supporting plate 533 and a connecting ring 534, one end of the supporting plate 533 is fixedly connected to the connecting plate 532, the other end of the supporting plate 533 is fixedly connected to the connecting ring 534, the connecting ring 534 is sleeved on the outside of the supporting rod 53, and the connecting plate 532 is detachably connected to the air supply plate 52.
In this embodiment, after the connection ring 534 is fitted around the support rod 53, the connection plate 532 and the air supply plate 52 are fixed by screws, so that the air supply plate 52 is installed between the fan blades 4 and the condenser 3.
Further, the inside of shell 1 still is provided with promotes subassembly 6, promote subassembly 6 to be located the flabellum 4 with between the condenser 3, promote subassembly 6 the output with the air feed plate 52 is dismantled and is connected, promote subassembly 6 including placing board 61, first servo motor 62, lead screw 63 and lead screw cover 64, place board 61 with shell 1 is dismantled and is connected, and is located between the flabellum 4 and the condenser 3, it is provided with on the board 61 first servo motor 62 to place, the output of first servo motor 62 is provided with lead screw 63, be provided with on the lead screw 63 lead screw cover 64, lead screw cover 64 with air feed plate 52 is dismantled and is connected.
In this embodiment, because the output end of the pushing assembly 6 is detachably connected to the air supply plate 52, the first servo motor 62 is started to drive the screw 63 to rotate, and because the screw sleeve 64 is detachably connected to the air supply plate 52, the air supply plate 52 is enabled to translate on the support rod 53, so that the air supply range of the air supply plate 52 is expanded, and the defrosting effect of the condenser 3 is better.
Further, the pushing assembly 6 further comprises a supporting frame 65, one end of the supporting frame 65 is detachably connected with the housing 1, the other end of the supporting frame 65 is sleeved outside the screw rod 63, and the supporting frame 65 is located at one end, far away from the first servo motor 62, of the screw rod 63.
In this embodiment, the support frame 65 is provided at one end of the screw 63, which is far from the first servo motor 62, and the screw 63 is supported by the support frame 65, so that the structure of the screw 63 is more stable.
Further, hot-blast pipeline 51 includes first connecting pipe 511, three-way valve 512, exhaust pipe 513 and coupling hose 514, the one end of first connecting pipe 511 with hot-blast gas vent 22 is dismantled and is connected, the other end of first connecting pipe 511 is provided with three-way valve 512, three-way valve 512 keeps away from the both ends of first connecting pipe 511 respectively with exhaust pipe 513 with coupling hose 514 is dismantled and is connected, exhaust pipe 513 runs through shell 1, coupling hose 514 keeps away from the one end of three-way valve 512 with air feed plate 52 is dismantled and is connected.
In this embodiment, when the condenser 3 does not need to be defrosted, the three-way valve 512 is started to open the first connection pipe 511 and the exhaust pipe, so as to exhaust the hot air generated by the refrigerator unit 2 to the outside of the housing 1, and when the condenser 3 needs to be defrosted, the three-way valve 512 is started to open the first connection pipe 511 and the connection hose 514, so as to convey the hot air into the air supply plate 52, and the air supply hole 521 is used to defrosted the condenser 3.
Further, the air supply plate 52 is provided with an adjusting device 7, the adjusting device 7 includes a second servo motor 71, a gear reduction box 72 and an adjusting piece 73, the air supply plate 52 is further provided with a placing block 74, the placing block 74 is provided with the second servo motor 71, the output end of the second servo motor 71 is provided with the gear reduction box 72, the output end of the gear reduction box 72 is provided with the adjusting piece 73, the adjusting piece 73 is provided with a plurality of adjusting pieces 75, and each adjusting piece 75 corresponds to one air supply hole 521.
In this embodiment, the second servo motor 71 is started, and the gear reduction box 72 is used to slow down the output rotation speed of the second servo motor 71, and then the adjusting member 73 is driven to rotate, so as to adjust the inclination angle of the adjusting piece 75, and further adjust the output direction of the air supply hole 521.
Further, the adjusting part 73 comprises a coupler 76, a rotating shaft 77 and a plurality of adjusting pieces 75, one end of the coupler 76 is sleeved outside the output end of the gear reduction box 72, the other end of the coupler 76 is sleeved outside the rotating shaft 77, the rotating shaft 77 penetrates through the air supply plate 52, and the plurality of adjusting pieces 75 are arranged on the rotating shaft 77.
In this embodiment, the shaft coupling 76 rotates the rotating shaft 77, and further rotates the plurality of adjusting pieces 75, thereby adjusting the output direction of the air supply hole 521.
Referring to fig. 7, the present invention further provides a working method using the above-mentioned refrigeration unit 2 and the air-cooler heat recovery system, including the following steps:
s1: when defrosting of the condenser 3 is not required, the three-way valve 512 is actuated to open the first connection pipe 511 and the exhaust pipe, so that the hot air generated by the refrigerating unit 2 is exhausted to the outside of the casing 1;
s2: when the condenser 3 needs to be defrosted, the three-way valve 512 is started to enable the first connecting pipe 511 and the connecting hose 514 to be unblocked, so that hot air is conveyed into the air supply plate 52, and the air supply hole 521 is used for defrosting the condenser 3;
s3: when defrosting, the pushing assembly 6 is started, so that the air supply plate 52 is pushed to move on the supporting rod 53, and then defrosting is performed on each position of the condenser 3 more comprehensively, and the defrosting effect is better.
In this embodiment, when the condenser 3 does not need to be defrosted, the three-way valve 512 is started to ensure that the first connecting pipe 511 and the exhaust pipe are unblocked, so as to exhaust hot air generated by the refrigerating unit 2 to the outside of the housing 1, when the condenser 3 needs to be defrosted, the three-way valve 512 is started to ensure that the first connecting pipe 511 and the connecting hose 514 are unblocked, so as to convey the hot air into the air supply plate 52, further defrosted the condenser 3 through the air supply hole 521, and when defrosting is performed, the pushing assembly 6 is started, so as to push the air supply plate 52 to move on the support rod 53, so as to more comprehensively defrost all positions of the condenser 3, and to ensure that the defrosting effect is better.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A heat recovery system of a refrigerating unit and an air cooler, which is characterized in that,
the refrigerating unit and air cooler heat recovery system comprises a shell, a refrigerating unit, a condenser, fan blades and a heat recovery and utilization device, wherein the refrigerating unit, the condenser and the fan blades are arranged in the shell, a condensed gas exhaust port and a hot air exhaust port are arranged on the refrigerating unit, a cold air pipeline is arranged between the condensed gas exhaust port and an air inlet end of the condenser, and an output end of the fan blade corresponds to the condenser;
the heat recycling device comprises a hot air pipeline, an air supply plate and a support rod, one end of the hot air pipeline corresponds to the hot air exhaust port, the other end of the hot air pipeline is provided with the air supply plate, the air supply plate is provided with a plurality of air supply holes, the air supply holes correspond to the condenser, the support rod is arranged inside the shell, the support rod is located between the fan blades and the condenser, a connecting piece is sleeved on the support rod, and the connecting piece is detachably connected with the air supply plate.
2. The refrigeration unit and air cooler heat recovery system of claim 1,
the connecting piece comprises a connecting plate, a supporting plate and a connecting ring, one end of the supporting plate is fixedly connected with the connecting plate, the other end of the supporting plate is fixedly connected with the connecting ring, the connecting ring is sleeved outside the supporting rod, and the connecting plate is detachably connected with the air supply plate.
3. The refrigeration unit and air cooler heat recovery system of claim 2,
the inside of shell still is provided with the promotion subassembly, the promotion subassembly is located between the flabellum and the condenser, the output of promotion subassembly with air supply plate dismantles and connects.
4. The refrigeration unit and air cooler heat recovery system of claim 3,
the promotion subassembly is including placing board, first servo motor, lead screw and lead screw cover, place the board with the shell is dismantled and is connected, and is located the flabellum with between the condenser, it is provided with on the board to place first servo motor, first servo motor's output is provided with the lead screw, be provided with on the lead screw cover, the lead screw cover with the air supply board is dismantled and is connected.
5. The refrigeration unit and air cooler heat recovery system of claim 4,
the hot-blast pipeline includes first connecting pipe, three-way valve, exhaust pipe and coupling hose, the one end of first connecting pipe with the connection is dismantled to hot-blast gas vent, the other end of first connecting pipe is provided with the three-way valve, the three-way valve is kept away from the both ends of first connecting pipe respectively with the exhaust pipe with coupling hose dismantles the connection, the exhaust pipe runs through the shell, coupling hose keeps away from the one end of three-way valve with the connection is dismantled to the air supply board.
6. A method of operating a refrigeration unit and air cooler heat recovery system as set forth in claim 5, characterized by the steps of:
when defrosting of the condenser is not needed, the three-way valve is started, so that the first connecting pipe and the exhaust pipe are unblocked, and hot air generated by the refrigerating unit is exhausted to the outside of the shell;
when the condenser needs to be defrosted, the three-way valve is started, so that the first connecting pipe and the connecting hose are smooth, hot air is conveyed into the air supply plate, and the condenser is defrosted by the air supply hole;
when defrosting, start the promotion subassembly to promote the air feed plate is in remove on the bracing piece, and then more comprehensive right each position of condenser is defrosted, makes the defrosting effect better.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111075839.8A CN113776178A (en) | 2021-09-14 | 2021-09-14 | Refrigerating unit and air cooler heat recovery system and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111075839.8A CN113776178A (en) | 2021-09-14 | 2021-09-14 | Refrigerating unit and air cooler heat recovery system and working method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113776178A true CN113776178A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111075839.8A Pending CN113776178A (en) | 2021-09-14 | 2021-09-14 | Refrigerating unit and air cooler heat recovery system and working method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592529A (en) * | 2023-07-12 | 2023-08-15 | 兰州理工大学 | Refrigerating unit |
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Effective date of registration: 20220314 Address after: 226200 No. 38, Jiangtian Road, Binhai Industrial Park, Qidong City, Nantong City, Jiangsu Province Applicant after: HANFU QIDONG AIR TREATMENT EQUIPMENT Co.,Ltd. Address before: 226200 No. 8, Jiangfeng Road, Qidong high tech Industrial Development Zone, Nantong City, Jiangsu Province Applicant before: Saifu air treatment equipment Qidong Co.,Ltd. |
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