CN112762509A - Storage control method for refrigerant during heating of waterless floor heating multi-split air conditioner - Google Patents
Storage control method for refrigerant during heating of waterless floor heating multi-split air conditioner Download PDFInfo
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- CN112762509A CN112762509A CN202011639132.0A CN202011639132A CN112762509A CN 112762509 A CN112762509 A CN 112762509A CN 202011639132 A CN202011639132 A CN 202011639132A CN 112762509 A CN112762509 A CN 112762509A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
Abstract
The invention discloses a storage control method of a refrigerant during heating of a waterless floor heating multi-connected unit, which comprises the steps of opening an electronic expansion valve 250 of a floor heating system for 350 steps when an outdoor unit receives a heating starting requirement of the floor heating system, opening an electromagnetic valve of the floor heating system, synchronously opening an electronic expansion valve 30-50 steps of an air conditioning system of the air conditioning system and the electromagnetic valve of the air conditioning system, starting judgment after a compressor of the outdoor unit operates for 7-13 minutes, and storing redundant refrigerant of the system into a heat exchanger of the air conditioning system through linkage control of the electronic expansion valve of the air conditioning system and the electromagnetic valve of the air conditioning system if the refrigerant in the floor heating system is more. When heating is carried out, redundant refrigerants of the system are stored in a heat exchanger of the air-conditioning system through linkage control of an electronic expansion valve of the air-conditioning system and an electromagnetic valve of the air-conditioning system, and the residual refrigerants participate in circulation of the floor heating system and the outdoor unit, so that the refrigerants in the floor heating system are ensured to be in proper quantity, and return of the refrigerants is avoided.
Description
Technical Field
The invention relates to a storage control method of a refrigerant during heating of a waterless floor heating multi-split air conditioner.
Background
The waterless floor heating multi-split air conditioner is essentially heat source equipment based on the air energy heating principle, so that the waterless floor heating multi-split air conditioner has the same energy-saving property as the air energy heating equipment, the tail end of the waterless floor heating multi-split air conditioner adopts a high-purity seamless red copper capillary tube as a floor heating coil, and an air energy host machine works to directly send a high-temperature refrigerant into a copper tube and condense and release heat in the copper tube. Compared with the water machine, the two-way water supply device saves the process that the refrigerant exchanges heat with water and is sent to the water heating pipe after heating water.
The air energy heating is along with the promotion of the policy of changing the coal into the electricity in the north, the energy conservation of the air energy host is undoubted, and the waterless floor heating host is an air energy host in principle, and the energy consumption of direct electric heating is about 30% when the waterless floor heating host works.
Compared with an air energy water machine, the energy efficiency of the main machine is roughly equivalent, but in the small-area water machine double-combined supply, the energy consumption of the water pump accounts for about 20% of the whole system and is even higher, the mechanical energy of the compressor is fully utilized by the waterless floor heating, the refrigerant is directly sent into the copper coil pipe, and the water pump is omitted, so that the energy consumption of the whole system is about 20% lower than that of the water machine system, the exhaust temperature is lower in the process, the heat exchanger is not arranged, the ground is directly used as a condenser, and the like, so that the whole energy efficiency is improved to a certain extent, and the heat loss is reduced.
However, the waterless floor heating multi-split air conditioner needs to be connected with a floor heating capillary system besides a plurality of indoor units, and refrigerants in the floor heating system can be added on site according to the actual indoor area. When partial indoor units are opened in the system or the floor heating system is opened singly, the refrigerant of the whole system is too much, and if the control is not good, the liquid return of the system can be caused, and finally, all parts of the system are damaged.
Disclosure of Invention
Aiming at the problems, the invention provides a storage control method of a refrigerant during heating of a waterless floor heating multi-split air conditioner, which effectively solves the problems pointed out in the background technology.
The technical scheme adopted by the invention is as follows:
a storage control method of a refrigerant during heating of a waterless floor heating multi-split air conditioner comprises an outdoor unit, an air conditioning system and at least one floor heating system, the refrigerant inlets of the air conditioning system and the floor heating system are connected with the refrigerant outlet of the outdoor unit, the refrigerant outlets of the air conditioning system and the floor heating system are connected with the refrigerant inlet of the outdoor unit, an electromagnetic valve of the air conditioning system is arranged at one end of a refrigerant inlet of the air conditioning system, an electronic expansion valve of the air conditioning system is arranged at one end of a refrigerant outlet of the air conditioning system, one end of a refrigerant inlet of the floor heating system is connected with the front end of the electromagnetic valve of the air conditioning system through the electromagnetic valve of the floor heating system, one end of a refrigerant outlet of the floor heating system is connected with the rear end of an electronic expansion valve of an air conditioning system through an electronic expansion valve of the floor heating system, and the storage control method comprises the following steps: when the outdoor unit receives the heating starting requirement of the floor heating system, opening an electronic expansion valve of the floor heating system for 250-350 steps, opening an electromagnetic valve of the floor heating system, synchronously opening an electronic expansion valve of an air conditioning system of the air conditioning system for 30-50 steps and an electromagnetic valve of the air conditioning system, and starting to judge after a compressor of the outdoor unit operates for 7-13 minutes: if the environmental temperature is more than or equal to 7 ℃ and less than or equal to 10 ℃, the system exhaust temperature is more than or equal to 100 ℃, the system high pressure is more than or equal to 3.4MPa, and the system low pressure is more than or equal to 1.0MPa, the refrigerant in the floor heating system is excessive; closing the electronic expansion valve of the air conditioning system corresponding to the air conditioning system, judging again after 3-7 minutes, and closing the electromagnetic valve of the air conditioning system if the exhaust temperature of the system is less than 95 ℃, the high pressure of the system is less than 3.2MPa, and the low pressure of the system is less than or equal to 0.8 MPa; if the parameters are not met, closing an electronic expansion valve of the air conditioning system and an electromagnetic valve of the air conditioning system corresponding to the air conditioning system after 5-15 minutes; if the environmental temperature is higher than 10 ℃, the system exhaust temperature is higher than or equal to 105 ℃, the system high pressure is higher than or equal to 3.5MPa, and the system low pressure is higher than or equal to 1.1MPa, indicating that the refrigerant in the floor heating system is excessive at the moment, closing an electronic expansion valve of an air conditioning system corresponding to the air conditioning system, judging again after 3-7 minutes, and if the system exhaust temperature is lower than 100 ℃, the system high pressure is lower than 3.3MPa, and the system low pressure is lower than or equal to 0.8MPa, closing an electromagnetic valve of the air conditioning system; if the parameters are not satisfied after 5-15 minutes, closing an electronic expansion valve of the air conditioning system and an electromagnetic valve of the air conditioning system corresponding to the air conditioning system; if the ambient temperature is less than 7 ℃; when the system exhaust temperature is greater than or equal to 100 ℃, the system high-pressure is greater than or equal to 3.3Mpa, and the system low-pressure is greater than or equal to 0.9Mpa, which indicates that the refrigerant in the floor heating system is excessive at the moment, the electronic expansion valve of the air conditioning system corresponding to the air conditioning system is closed, the judgment is carried out again after 3-7 minutes, if the system exhaust temperature is less than 95 ℃, the system high-pressure is less than 3.1Mpa, and the system low-pressure is less than or equal to 0.7Mpa, the electromagnetic valve of the air conditioning system corresponding to the air conditioning system is closed, and if the system exhaust temperature does not meet the parameters, the electronic expansion valve.
When heating is carried out, redundant refrigerants of the system are stored in a heat exchanger of the air conditioning system through linkage control of an electronic expansion valve of the air conditioning system and an electromagnetic valve of the air conditioning system, and the residual refrigerants participate in circulation of the floor heating system and the outdoor unit, so that the refrigerants in the floor heating system are ensured to be in proper quantity, and damage to all parts caused by liquid return of the refrigerants is avoided.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a flowchart showing the operation of the cooling operation in embodiment 1;
fig. 3 is a schematic structural view of embodiment 2.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1 and 2, a storage control method of a refrigerant during heating of an anhydrous floor heating multi-split air conditioner comprises an outdoor unit 1, an air conditioning system 2 and two floor heating systems 3, wherein refrigerant inlets of the air conditioning system 2 and the floor heating system 3 are both connected with a refrigerant outlet of the outdoor unit 1, refrigerant outlets of the air conditioning system 2 and the floor heating system 3 are both connected with a refrigerant inlet of the outdoor unit 1, an air conditioning system electromagnetic valve 4 is arranged at one end of the refrigerant inlet of the air conditioning system 2, an air conditioning system electronic expansion valve 5 is arranged at one end of the refrigerant outlet of the air conditioning system 2, one end of the refrigerant inlet of the floor heating system 3 is connected with the front end of the air conditioning system electromagnetic valve 4 through a floor heating system electromagnetic valve 6, one end of the refrigerant outlet of the floor heating system 3 is connected with the rear end of the air conditioning system electronic expansion valve 5 through a, the storage control method comprises the following steps: when the outdoor unit 1 receives a heating start-up requirement of the first floor heating system 3, opening the electronic expansion valve 7250 of the first floor heating system for 350 steps, opening the electromagnetic valve 6 of the floor heating system, synchronously opening the electronic expansion valve 540 of the air conditioning system 2 and the electromagnetic valve 4 of the air conditioning system, synchronously opening the electronic expansion valve 730-50 of the floor heating system of the second floor heating system 3 and the electromagnetic valve 6 of the floor heating system, and starting to judge after the compressor of the outdoor unit 1 runs for 7-13 minutes: if the environmental temperature is greater than or equal to 7 ℃ and less than or equal to 10 ℃, the system exhaust temperature is greater than or equal to 100 ℃, the system high pressure is greater than or equal to 3.4Mpa, and the system low pressure is greater than or equal to 1.0Mpa, which indicates that the refrigerant in the first floor heating system 3 is too much at the moment, the electronic expansion valve 7 of the floor heating system corresponding to the second floor heating system 3 is preferentially closed, and the judgment is carried out again after 3-7 minutes, and if the system exhaust temperature is less than 95 ℃, the system high pressure is less than 3.2Mpa, and the system low pressure is less than or equal to 0.8Mpa, the floor heating system electromagnetic valve 6 of the second floor heating system 3 is closed; if the parameters are not met, closing the electronic expansion valve 5 of the air conditioning system corresponding to the air conditioning system 2, judging again after 3-7 minutes, and closing the electromagnetic valve 4 of the air conditioning system 2 if the exhaust temperature of the system is less than 95 ℃, the high pressure of the system is less than 3.2MPa, and the low pressure of the system is less than or equal to 0.8 MPa; if the parameters are not met, closing an air conditioning system electronic expansion valve 5 and an air conditioning system electromagnetic valve 4 corresponding to the air conditioning system 2, and a floor heating system electronic expansion valve 7 and a floor heating system electromagnetic valve 6 corresponding to a second floor heating system after 5-15 minutes; if the environmental temperature is more than 10 ℃, the exhaust temperature of the system is more than or equal to 105 ℃, and the high pressure of the system is more than or equal to 3.5Mpa, when the low-pressure of the system is more than or equal to 1.1Mpa, the refrigerant in the floor heating system 3 is excessive, closing the electronic expansion valve 7 of the floor heating system corresponding to the second floor heating system 3 preferentially, judging again after 3-7 minutes, if the exhaust temperature of the system is less than 100 ℃, when the high pressure of the system is less than 3.3Mpa and the low pressure of the system is less than or equal to 0.8Mpa, the floor heating system electromagnetic valve 6 of the second floor heating system 3 is closed, if the above parameters are still not met, closing the electronic expansion valve 5 of the air conditioning system corresponding to the air conditioning system 2, judging again after 3-7 minutes, if the exhaust temperature of the system is less than 100 ℃, when the system high pressure is less than 3.3Mpa and the system low pressure is less than or equal to 0.8Mpa, the air-conditioning system electromagnetic valve 4 of the air-conditioning system 2 is closed; if the parameters are not satisfied after 5-15 minutes, closing an air-conditioning system electronic expansion valve 5 and an air-conditioning system electromagnetic valve 4 corresponding to the air-conditioning system 2, and a floor heating system electronic expansion valve 7 and a floor heating system electromagnetic valve 6 corresponding to a second floor heating system; if the ambient temperature is less than 7 ℃; when the system exhaust temperature is more than or equal to 100 ℃, the system high pressure is more than or equal to 3.3Mpa, and the system low pressure is more than or equal to 0.9Mpa, which indicates that the refrigerant in the floor heating system 3 is excessive at the moment, the electronic expansion valve 7 of the floor heating system corresponding to the second floor heating system 3 is closed preferentially, the judgment is carried out again after 3-7 minutes, if the system exhaust temperature is less than 95 ℃, the system high pressure is less than 3.1Mpa, and the system low pressure is less than or equal to 0.7Mpa, the electromagnetic valve 6 of the floor heating system corresponding to the second floor heating system 3 is closed, if the system exhaust temperature is still less than 95 ℃, the system high pressure is less than 3.1Mpa, and the system low pressure is less than or equal to 0.7Mpa, the electromagnetic valve 4 of the air conditioning system 2 is closed, if the parameters are not met, closing an air conditioning system electronic expansion valve 5 and an air conditioning system electromagnetic valve 4 corresponding to the air conditioning system 2, and a floor heating system electronic expansion valve 7 and a floor heating system electromagnetic valve 6 corresponding to the second floor heating system after 5-15 minutes.
The waterless floor heating multi-split unit further comprises an unloading system, wherein the unloading system comprises a first unloading valve 8 arranged at the rear end of the air conditioning system electromagnetic valve 4 and the rear end of the floor heating system electromagnetic valve 6 of the first floor heating system 3, and a second unloading valve 9 arranged at the rear end of the floor heating system electromagnetic valve 6 of the first floor heating system 3 and the rear end of the floor heating system electromagnetic valve 6 of the second floor heating system 3.
The unloading valve is a mechanical valve, when the pressure difference between two sides is larger than the designed value, it will be opened automatically to achieve the purpose of pressure relief, the designed value of the first unloading valve 8 and the second unloading valve 9 can be selected according to the actual bearing capacity of the pipeline, for example, the unloading valve of 4-6Mpa can be selected.
Because in the in-service use process, ambient temperature can change at any time, and when ambient temperature risees, the pressure in two underfloor heating system 3 can increase, and after increasing to a certain degree, if do not carry out the off-load, can produce the pipe explosion phenomenon, consequently, must design the off-load system and carry out the off-load to avoid the emergence of incident.
The working principle of the unloading system is as follows:
during heating, part of the refrigerant is stored in the heat exchanger of the air conditioning system 2, and if the pressure in the air conditioning system 2 reaches the design value of the first unloading valve 8, the first unloading valve 8 is automatically opened, and part of the refrigerant is sent to the first floor heating system, so that the purpose of unloading the air conditioning system 2 is achieved.
Example 2
As shown in fig. 3, a method for controlling storage of a refrigerant during heating of an anhydrous floor heating multi-split air conditioner comprises an outdoor unit 1, an air conditioning system 2 and a floor heating system 3, wherein refrigerant inlets of the air conditioning system 2 and the floor heating system 3 are both connected with a refrigerant outlet of the outdoor unit 1, refrigerant outlets of the air conditioning system 2 and the floor heating system 3 are both connected with a refrigerant inlet of the outdoor unit 1, an air conditioning system solenoid valve 4 is arranged at one refrigerant inlet end of the air conditioning system 2, an air conditioning system electronic expansion valve 5 is arranged at one refrigerant outlet end of the air conditioning system 2, one refrigerant inlet end of the floor heating system 3 is connected with the front end of the air conditioning system solenoid valve 4 through a floor heating system solenoid valve 6, and one refrigerant outlet end of the floor heating system 3 is connected with the rear end of the air conditioning system electronic expansion valve 5 through a floor heating system electronic expansion valve, the storage control method comprises the following steps: when the outdoor unit 1 receives the heating start-up requirement of the floor heating system 3, the electronic expansion valve 7250 of the floor heating system is opened for 350 steps, the electromagnetic valve 6 of the floor heating system is opened, the electronic expansion valve 530-50 of the air conditioning system 2 and the electromagnetic valve 4 of the air conditioning system are synchronously opened, and the judgment is started after the compressor of the outdoor unit 1 runs for 7-13 minutes: if the ambient temperature is greater than or equal to 7 ℃ and less than or equal to 10 ℃, the system exhaust temperature is greater than or equal to 100 ℃, the system high-pressure is greater than or equal to 3.4Mpa, and the system low-pressure is greater than or equal to 1.0Mpa, it indicates that the quantity of refrigerant in the floor heating system 3 is too much; closing the air conditioning system 2 corresponding to the air conditioning system electronic expansion valve 5, judging again after 3-7 minutes, and closing the air conditioning system electromagnetic valve 4 of the air conditioning system 2 if the system exhaust temperature is less than 95 ℃, the system high pressure is less than 3.2Mpa, and the system low pressure is less than or equal to 0.8 Mpa; if the parameters are not met, closing an air conditioning system electronic expansion valve 5 and an air conditioning system electromagnetic valve 4 corresponding to the air conditioning system 2 after 5-15 minutes; if the environmental temperature is higher than 10 ℃, the system exhaust temperature is higher than or equal to 105 ℃, the system high pressure is higher than or equal to 3.5Mpa, and the system low pressure is higher than or equal to 1.1Mpa, which indicates that the refrigerant in the floor heating system 3 is too much at the moment, the air conditioning system 2 is closed corresponding to the air conditioning system electronic expansion valve 5, and the judgment is carried out again after 3-7 minutes, and if the system exhaust temperature is lower than 100 ℃, the system high pressure is lower than 3.3Mpa, and the system low pressure is lower than or equal to 0.8Mpa, the air conditioning system electromagnetic valve 4 of the air conditioning system 2 is closed; if the parameters are not satisfied after 5-15 minutes, closing an air conditioning system electronic expansion valve 5 and an air conditioning system electromagnetic valve 4 corresponding to the air conditioning system 2; if the ambient temperature is less than 7 ℃; when the system exhaust temperature is greater than or equal to 100 ℃, the system high-pressure is greater than or equal to 3.3Mpa, and the system low-pressure is greater than or equal to 0.9Mpa, which indicates that the refrigerant in the floor heating system 3 is excessive at the moment, the air-conditioning system electronic expansion valve 5 corresponding to the air-conditioning system 2 is closed, the judgment is carried out again after 3-7 minutes, if the system exhaust temperature is less than 95 ℃, the system high-pressure is less than 3.1Mpa, and the system low-pressure is less than or equal to 0.7Mpa, the air-conditioning system electromagnetic valve 4 of the air-conditioning system 2 is closed, and if the system exhaust temperature does not meet the parameters, the air-conditioning system electronic expansion valve 5 and the air.
Finally, it should be noted that the above-mentioned list is only the specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (1)
1. A storage control method of a refrigerant during heating of a waterless floor heating multi-split air conditioner is characterized by comprising an outdoor unit (1), an air conditioning system (2) and at least one floor heating system (3), wherein refrigerant inlets of the air conditioning system (2) and the floor heating system (3) are connected with a refrigerant outlet of the outdoor unit (1), refrigerant outlets of the air conditioning system (2) and the floor heating system (3) are connected with a refrigerant inlet of the outdoor unit (1), an air conditioning system electromagnetic valve (4) is arranged at one end of the refrigerant inlet of the air conditioning system (2), an air conditioning system electronic expansion valve (5) is arranged at one end of the refrigerant outlet of the air conditioning system (2), one end of the refrigerant inlet of the floor heating system (3) is connected with the front end of the air conditioning system electromagnetic valve (4) through a floor heating system electromagnetic valve (6), one end of a refrigerant outlet of the floor heating system (3) is connected with the rear end of an electronic expansion valve (5) of the air-conditioning system through an electronic expansion valve (7) of the floor heating system, and the storage control method comprises the following steps: when the outdoor unit (1) receives the heating starting requirement of the floor heating system (3), the floor heating system electronic expansion valve (7) is opened for 250-350 steps, the floor heating system electromagnetic valve (6) is opened, the air conditioning system electronic expansion valve (5) of the air conditioning system (2) is synchronously opened for 30-50 steps and the air conditioning system electromagnetic valve (4), and the judgment is started after the compressor of the outdoor unit (1) runs for 7-13 minutes: if the environmental temperature is more than or equal to 7 ℃ and less than or equal to 10 ℃, the system exhaust temperature is more than or equal to 100 ℃, the system high pressure is more than or equal to 3.4MPa, and the system low pressure is more than or equal to 1.0MPa, the refrigerant in the floor heating system (3) is excessive; closing an electronic expansion valve (5) of the air conditioning system corresponding to the air conditioning system of the air conditioning system (2), judging again after 3-7 minutes, and closing an electromagnetic valve (4) of the air conditioning system (2) if the exhaust temperature of the system is less than 95 ℃, the high pressure of the system is less than 3.2MPa, and the low pressure of the system is less than or equal to 0.8 MPa; if the parameters are not met, closing an electronic expansion valve (5) of the air conditioning system and an electromagnetic valve (4) of the air conditioning system corresponding to the air conditioning system (2) after 5-15 minutes; if the environmental temperature is higher than 10 ℃, the system exhaust temperature is higher than or equal to 105 ℃, the system high pressure is higher than or equal to 3.5MPa, and the system low pressure is higher than or equal to 1.1MPa, which indicates that the refrigerant in the floor heating system (3) is excessive at the moment, the electronic expansion valve (5) of the air conditioning system (2) corresponding to the air conditioning system is closed, and the judgment is carried out again after 3-7 minutes, and if the system exhaust temperature is lower than 100 ℃, the system high pressure is lower than 3.3MPa, and the system low pressure is lower than or equal to 0.8MPa, the electromagnetic valve (4) of the air conditioning system (2) is closed; if the parameters are not satisfied after 5-15 minutes, closing an electronic expansion valve (5) of the air conditioning system and an electromagnetic valve (4) of the air conditioning system corresponding to the air conditioning system (2); if the ambient temperature is less than 7 ℃; when the system exhaust temperature is greater than or equal to 100 ℃, the system high pressure is greater than or equal to 3.3Mpa, and the system low pressure is greater than or equal to 0.9Mpa, which indicates that the refrigerant in the floor heating system (3) is excessive at the moment, the electronic expansion valve (5) of the air conditioning system corresponding to the air conditioning system (2) is closed, the judgment is carried out again after 3-7 minutes, if the system exhaust temperature is less than 95 ℃, the system high pressure is less than 3.1Mpa, and the system low pressure is less than or equal to 0.7Mpa, the electromagnetic valve (4) of the air conditioning system corresponding to the air conditioning system (2) is closed, and if the parameters are not met, the electronic expansion valve (5) of the air conditioning system and the electromagnetic valve (4) of the air.
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| CN111322801A (en) * | 2020-02-27 | 2020-06-23 | 广东志高暖通设备股份有限公司 | Control method and device of electronic expansion valve |
| CN111336585A (en) * | 2020-03-17 | 2020-06-26 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner floor heating system |
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Address after: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Applicant after: Zhejiang Zhongguang Electric Appliance Group Co.,Ltd. Address before: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Applicant before: ZHEJIANG ZHONGGUANG ELECTRIC APPLIANCES Co.,Ltd. |
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Effective date of registration: 20221026 Address after: 101, Building 13, CIMC Intelligent Manufacturing Center, No. 15, Shunye West Road, Xingtan Town, Shunde District, Foshan City, Guangdong Province, 528000 Patentee after: Guangdong Zhongguang HVAC Co.,Ltd. Address before: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Patentee before: Zhejiang Zhongguang Electric Appliance Group Co.,Ltd. |