CN106524503A - Heat pump water heater - Google Patents

Heat pump water heater Download PDF

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Publication number
CN106524503A
CN106524503A CN201611223065.8A CN201611223065A CN106524503A CN 106524503 A CN106524503 A CN 106524503A CN 201611223065 A CN201611223065 A CN 201611223065A CN 106524503 A CN106524503 A CN 106524503A
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CN
China
Prior art keywords
valves
pressure
cold
producing medium
vaporizer
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Granted
Application number
CN201611223065.8A
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Chinese (zh)
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CN106524503B (en
Inventor
黎德明
其他发明人请求不公开姓名
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Beijing Zhongtianshi Energy Saving Technology Co ltd
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Individual
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Defrosting Systems (AREA)

Abstract

The invention discloses a heat pump water heater which comprises a compressor, a water-gas heat exchanger, a frost-prevention heat exchanger, a 1# valve, a liquid storage tank, a 2# valve, a by-pass pipe, 1-3# solenoid valves, a capillary tube, a throttling device, an evaporator, a 1# pressure sensor, a 2# pressure sensor, a fan and a controller. The controller is used for dynamically regulating participation amount, inside a system, of a refrigerant inside the liquid storage tank, so that the heat pump water heater is ensured to be capable of normally and stably operating under a high-low-temperature working condition.

Description

A kind of Teat pump boiler
Technical field
The present invention relates to air energy heat pump water heater field, more particularly to a kind of Heat Pump for meeting the operation of high/low temperature operating mode Hydrophone.
Background technology
The ambient temperature of normal air energy Teat pump boiler typically operation is -7~43 DEG C, regional in very cold, commonly Teat pump boiler normally cannot be used.Even if occurring in that now air injection enthalpy-increasing compressor and enthalpy increasing heat pump system, equipment can be allowed Can run at low ambient temperatures (refer generally to ambient temperature at -15~-25 DEG C), but due to its structure and control complexity, failure Rate is high, also increases many in terms of cost, and the problem that defrosts still is present, and defrosting energy consumption cannot be solved.
The content of the invention
It is an object of the invention to:The defect existed for above-mentioned technology and deficiency, propose a kind of air energy heat pump hot water Device, its system configuration are simple, highly reliable, meet the air energy heat pump water heater run under high/low temperature operating mode.
To solve above-mentioned technical problem, the technical scheme that the present invention is provided is:A kind of air energy heat pump water heater by Compressor, aqueous vapor heat exchanger, frost prevention heat exchanger, 1# valves, fluid reservoir, 2# valves, bypass pipe, 1-3# electromagnetic valves, capillary tube, section Stream device, vaporizer, 1# pressure transducers, 2# pressure transducers, fan, controller composition.
Wherein, the capacity of the fluid reservoir is about refrigerant charge under system hypothermia operating mode (7 DEG C of dry bulb, 6 DEG C of wet bulb) 3 times or so;
Wherein, the 1# valves and 2# valves can be relief valve or electromagnetic valve, pass through according to the difference of control mode 1# valves and 2# valves come control system pressure and delivery temperature.
Wherein, the throttling arrangement according to adjust require, can be expansion valve can also be capillary tube.
Wherein, the 3# electromagnetic valves are normal-open electromagnetic valve, 1# and 2# electromagnetic valves are normal-closed electromagnetic valve.
Wherein, the vaporizer and frost prevention heat exchanger are close to installation, and frost prevention heat exchanger is located at windward side, and vaporizer position In lee face, both are in together in an air channel.
Wherein, it is described under laboratory simulation operating mode, it is -25 DEG C of operating modes according to simulated environment temperature, in advance in heat pump system A certain amount of cold-producing medium is filled with system, it is ensured that pressure at expulsion and pressure of inspiration(Pi) are in rational a numerical range, such as aerofluxuss 1MPa~1.8MPa, air-breathing 0.3Mpa~0.4Mpa, while delivery temperature is guaranteed in rational scope, such as 60-90 DEG C.
The operation principle of the air energy heat pump water heater is:In the case where ambient temperature is higher, such as when 10-20 DEG C, 2# valve closings, 1# valves are opened, originally alternate path by the controller according to the pressure at expulsion and delivery temperature for detecting Only remaining bypass pipe circulates cold-producing medium, and due to the change of pressure, cold-producing medium constantly will be charged toward inside fluid reservoir, until exhaust pressure Till power returns to normal value, 1# valves are then turned off, at this moment unnecessary cold-producing medium will be sealed in the middle of fluid reservoir.Work as environment When temperature drop, pressure at expulsion and delivery temperature drop to certain value, 2# valves are opened, and are sealed in originally the cold-producing medium of the inside Can enter in system, supplement and declined due to ambient temperature, and the pressure at expulsion and delivery temperature that cause decline, it is normal until being raised to After level, if pressure still recovers less than normal pressure after 2# valves are opened, now first 1# and 2# electromagnetic valves are opened, 3# is electric Magnet valve is closed, after capillary-compensated blood pressure lowering so that reduced pressure before throttling arrangement, so as to force the cold-producing medium in fluid reservoir Continue to replenish in dynamical system, according to the time arranged in controller, first open 3# electromagnetic valves, be then shut off 1# and 2# electromagnetism Valve, after system operation balance, detects pressure at expulsion and delivery temperature, if being also not up to normal running status, repeats Above-mentioned action, till pressure at expulsion and delivery temperature reach normal level.If under extreme ambient temperature, above-mentioned refrigeration Agent supplement also fail to reach requirement in the case of, now by 1# valves open, by whole fluid reservoir and link in system run, fill Cold-producing medium of the partite transport in original fluid reservoir.The frost prevention heat exchanger as to cold-producing medium in the condensed mistake of aqueous vapor heat exchanger It is cold, continue to release heat, and transfer heat to vaporizer, reaching can be so that the cold-producing medium before throttling obtains bigger supercool Degree, can improve the evaporating temperature of vaporizer again, while improving the heat exchange efficiency of vaporizer, it is to avoid vaporizer at low ambient temperatures The situation of frosting.
The invention has the beneficial effects as follows, the advantage using such scheme is:1st, by jumbo fluid reservoir and cooperation The electromagnetic valve and capillary tube of its action, effectively dynamically can be adjusted to heat pump pressure so that pressure at expulsion And delivery temperature is in optimal running parameter all the time, so as to effectively improve unit operation performance, and reducing energy consumption, raising is reached The effect of Energy Efficiency Ratio;2nd, using frost prevention heat exchanger, evaporating temperature can be effectively improved, improves heat exchange efficiency, it is to avoid vaporizer is tied Frost, energy consumption and avoid producing negative impact to water temperature that reduction additionally increases as unit defrosts, while to condensed Cold-producing medium is further cooled down so that degree of supercooling increases, so as to improve overall unit performance;3rd, this heat pump configuration letter It is single, it is reliable, in contrast to increasing enthalpy system, it is possible to decrease cost, improve reliability.
Description of the drawings
Fig. 1 is a kind of schematic diagram of Teat pump boiler in first embodiment of the invention;
Fig. 2 is a kind of schematic diagram of Teat pump boiler in second embodiment of the invention;
Fig. 3 is a kind of schematic diagram of Teat pump boiler in third embodiment of the invention;
Main element symbol description
1- compressors;2- aqueous vapor heat exchangers;3- frost prevention heat exchangers;4-3# electromagnetic valves;5- bypass pipes;6-1# valves;7- is stored up Flow container;8-2# valves;9-1# electromagnetic valves;10- capillary tubies;11-2# electromagnetic valves;12- throttling arrangements;13- vaporizers;14-1# is pressed Force transducer;15-2# pressure transducers;16- fans.
Specific embodiment
By describing technology contents of the invention, structural features in detail, realizing purpose and effect, below in conjunction with embodiment And coordinate accompanying drawing to be explained in detail.
Fig. 1 is referred to, a kind of air energy heat pump water heater is by compressor 1, aqueous vapor heat exchanger 2, frost prevention heat exchanger 3,1# valves Door 6, fluid reservoir 7,2# valves 8, bypass pipe 5,1# electromagnetic valves 9,2# electromagnetic valves 11,3# electromagnetic valves 4, capillary tube 10, throttling arrangement 12, vaporizer 13,1# pressure sensings 14,2# pressure transducers 15, fan 16, controller composition.The capacity of the fluid reservoir 7 is about For 3 times or so of refrigerant charge under system hypothermia operating mode (7 DEG C of dry bulb, 6 DEG C of wet bulb);The 1# valves 6 and 8,2# valves According to the difference of control mode, can be relief valve or electromagnetic valve, by 1# valves 6 and 2# valves 8 come control system pressure and Delivery temperature.The throttling arrangement 12 according to adjust require, can be expansion valve can also be capillary tube.The 3# electromagnetic valves 4 For normal-open electromagnetic valve, 1# electromagnetic valves 9 and 2# electromagnetic valves 11 are normal-closed electromagnetic valve.The vaporizer 13 and frost prevention heat exchanger 3 It is close to installation, wherein frost prevention heat exchanger 3 is located at windward side, and vaporizer 13 is located at lee face, and both are in an air channel together In.
Under laboratory simulation operating mode, be -25 DEG C of operating modes according to simulated environment temperature, one be filled with heat pump in advance Quantitative cold-producing medium, it is ensured that pressure at expulsion and pressure of inspiration(Pi) in a rational numerical range, such as aerofluxuss 1MPa~1.5MPa, Air-breathing 0.3Mpa~0.4Mpa, while delivery temperature is guaranteed in rational scope, such as 60-90 DEG C.
When the 1# valves 6 and 2# valves 8 are electromagnetic valve, the operation principle of the air energy heat pump water heater is:In ring In the case that border temperature is higher, such as when 10-20 DEG C, the controller is according to the pressure at expulsion and delivery temperature for detecting, 2# Valve 8 is closed, and 1# valves 6 are opened, and originally alternate path is only left the circulation cold-producing medium of bypass pipe 5, due to the change of pressure, refrigeration Agent constantly will be charged toward inside fluid reservoir 7, till pressure at expulsion returns to normal value, is then turned off 1# valves 6, at this moment many Remaining cold-producing medium will be sealed in the middle of fluid reservoir.When ambient temperature declines, pressure at expulsion and delivery temperature drop to certain value When, 2# valves 8 are opened, and the cold-producing medium for being sealed in originally the inside can be entered in system, supplemented and declined due to ambient temperature, and draw The pressure at expulsion for rising and delivery temperature decline, after being raised to normal level, if pressure still recovers not after 2# valves 8 are opened To normal pressure, now first 1# electromagnetic valves 9 and 2# electromagnetic valves 11 are opened, 3# electromagnetic valves 4 cut out, dropped by the throttling of capillary tube 10 After pressure so that reduced pressure before throttling arrangement 12, replenish in dynamical system so as to force the cold-producing medium in fluid reservoir 7 to continue, According to the time arranged in controller, 3# electromagnetic valves are first opened, 1# electromagnetic valves 9 and 2# electromagnetic valves 11 is then shut off, treat that system is transported After row balance, pressure at expulsion and delivery temperature are detected, if being also not up to normal running status, repeat above-mentioned action, directly To pressure at expulsion and delivery temperature reach normal level.If under extreme ambient temperature, above-mentioned cold-producing medium is supplemented also not In the case of requirement being reached, now 1# valves 6 are opened, by whole fluid reservoir 7 and link in system and run, fully with former The cold-producing medium come in fluid reservoir 7.The frost prevention heat exchanger 3 continues as condensed supercool in aqueous vapor heat exchanger 2 to cold-producing medium Heat is released, and transfers heat to vaporizer 13, reaching can be so that the cold-producing medium before throttling obtains more big supercooling degree, and energy The evaporating temperature of vaporizer 13 is improved, while improving the heat exchange efficiency of vaporizer 13, it is to avoid vaporizer 13 at low ambient temperatures The situation of frosting.
When the 1# valves 6 and 2# valves 8 are pressure-relief valve, and the release pressure value of valve is adjustable, the air energy thermal The operation principle of pump water heater is:No matter under which kind of ambient temperature, as long as pressure differential before and after described two pressure-relief valves are respective Its condition being turned on or off can be reached, two valves make corresponding action so that the cold-producing medium in system is mended Fill or reduce, by the effect of the two pressure-relief valves so that system pressure is dynamically adjusted, and can ensure that system pressure Dynamic equilibrium is realized, so as to ensure that system is in optimal operation working condition all the time.
Fig. 2 is referred to, which is to reduce 1# electromagnetic valves 9 with the difference of embodiment 1,11 groups of capillary tube 10,2# electromagnetic valves Into throttling pipeline, and the outlet of the 2# valves 8 is directly connected with the compressor suction duct, and the benefit of do so exists In, it is ensured that fluid reservoir 7 easily realizes the adjustment effect to system refrigerant participation amount, because remaining before and after 2# valves 8 Larger pressure differential so that cold-producing medium is easier to preserve or discharges.And without additionally increasing special in embodiment one Door throttling pipeline, more can improve reliability with simplied system structure.
Fig. 3 is referred to, which with the difference of embodiment 2 is, before the 1# valves 6, terminate at water before the frost prevention heat exchanger In pipeline after gas heat exchanger 2, this have the advantage that, it is ensured that the fluid reservoir 7 is easily realized joining system refrigerant With the adjustment effect of amount because remaining larger pressure differential before and after equally can ensure that 2# valves 8 so that cold-producing medium more holds It is easy to maintain or discharge.The heat transfer effect to frost prevention heat exchanger 3, control system degree of supercooling, and energy can be equally adjusted simultaneously The evaporating temperature of vaporizer 13 is adjusted to, therefore the range of accommodation of system is wider, can more effectively improve equipment performance and operation Reliability.
Advantage using such scheme is:1st, by jumbo fluid reservoir and the electromagnetic valve and capillary of its action are coordinated Pipe, effectively dynamically can be adjusted to heat pump pressure so that pressure at expulsion and delivery temperature are in most all the time Good running parameter, so as to effectively improve unit operation performance, and reducing energy consumption, reaches the effect for improving Energy Efficiency Ratio;2nd, adopt Frost prevention heat exchanger, can effectively improve evaporating temperature, improve heat exchange efficiency, it is to avoid evaporimeter frosting, reduce defrosting due to unit And the energy consumption that additionally increases and avoid producing water temperature negative impact, while carrying out to condensed cold-producing medium further cold But so that degree of supercooling increases, so as to improve overall unit performance;3rd, the configuration of this heat pump is simple, reliable, in contrast to increasing Enthalpy system, it is possible to decrease cost, improves reliability.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (8)

1. a kind of Teat pump boiler, it is characterised in that including compressor, aqueous vapor heat exchanger, frost prevention heat exchanger, 1# valves, liquid storage Tank, 2# valves, bypass pipe, 1-3# electromagnetic valves, capillary tube, throttling arrangement, vaporizer, 1# pressure transducers, 2# pressure transducers, Fan, controller;
In the case where ambient temperature is higher, such as when 10-20 DEG C, the controller is according to the pressure at expulsion and aerofluxuss for detecting Temperature, 2# valve closings, 1# valves are opened, and originally alternate path is only left bypass pipe circulation cold-producing medium, due to the change of pressure Change, cold-producing medium constantly will be charged toward inside fluid reservoir, till pressure at expulsion returns to normal value, is then turned off 1# valves, At this moment unnecessary cold-producing medium will be sealed in the middle of fluid reservoir, and when ambient temperature declines, pressure at expulsion and delivery temperature drop to one When definite value, 2# valves are opened, and the cold-producing medium for being sealed in originally the inside can be entered in system, supplemented due under ambient temperature Drop, and the pressure at expulsion and delivery temperature that cause decline, after being raised to normal level, if pressure is still after 2# valves are opened Recover, less than normal pressure, now first to open 1# and 2# electromagnetic valves, 3# closed electromagnetic valves, after capillary-compensated blood pressure lowering, So that reduced pressure before throttling arrangement, replenishes in dynamical system so as to force the cold-producing medium in fluid reservoir to continue, according to control The time arranged in device, 3# electromagnetic valves are first opened, 1# and 2# electromagnetic valves are then shut off, after system operation balance, detect aerofluxuss Pressure and delivery temperature, if being also not up to normal running status, repeat above-mentioned action, until pressure at expulsion and aerofluxuss temperature Till degree reaches normal level, if under extreme ambient temperature, above-mentioned cold-producing medium is supplemented in the case of also failing to reach requirement, Now by 1# valves open, by whole fluid reservoir and link in system run, fully with the cold-producing medium in original fluid reservoir, institute Frost prevention heat exchanger is stated as condensed supercool in aqueous vapor heat exchanger to cold-producing medium, is continued to release heat, and is transferred heat to Vaporizer, reach can so that throttling before cold-producing medium obtain more big supercooling degree, the evaporating temperature of vaporizer can be improved again, improve While the heat exchange efficiency of vaporizer, it is to avoid the situation of evaporimeter frosting at low ambient temperatures.
2. a kind of Teat pump boiler according to claim 1, it is characterised in that it is low that the capacity of the fluid reservoir is about system 3 times or so of refrigerant charge under warm operating mode (7 DEG C of dry bulb, 6 DEG C of wet bulb).
3. a kind of Teat pump boiler according to claim 1, it is characterised in that the 1# valves and 2# valves are according to control The difference of mode, can be relief valve or electromagnetic valve, by 1# valves and 2# valves come control system pressure and delivery temperature.
4. a kind of Teat pump boiler according to claim 1, it is characterised in that the throttling arrangement required according to adjusting, Can be expansion valve can also be capillary tube.
5. a kind of Teat pump boiler according to claim 1, it is characterised in that the 3# electromagnetic valves are open type electromagnetism Valve, 1# and 2# electromagnetic valves are normal-closed electromagnetic valve.
6. a kind of Teat pump boiler according to claim 1, it is characterised in that the vaporizer and frost prevention heat exchanger are close to Installation, frost prevention heat exchanger is located at windward side, and vaporizer is located at lee face, and both are in together in an air channel.
7. a kind of Teat pump boiler according to claim 1, it is characterised in that described under laboratory simulation operating mode, root It is -25 DEG C of operating modes according to simulated environment temperature, is filled with a certain amount of cold-producing medium in advance in heat pump, it is ensured that pressure at expulsion and suction Atmospheric pressure is in a rational numerical range, such as aerofluxuss 1MPa~1.8MPa, air-breathing 0.3Mpa~0.4Mpa, while guaranteeing row Temperature degree in rational scope, such as 60-90 DEG C.
8. a kind of Teat pump boiler according to claim 1, it is characterised in that the frost prevention heat exchanger is used as to cold-producing medium It is condensed supercool in aqueous vapor heat exchanger, continue to release heat, and transfer heat to vaporizer, reach before can causing throttling Cold-producing medium obtain more big supercooling degree, can improve the evaporating temperature of vaporizer again, while improving the heat exchange efficiency of vaporizer, keep away Exempt from the situation of evaporimeter frosting at low ambient temperatures.
CN201611223065.8A 2016-12-27 2016-12-27 Heat pump water heater Active CN106524503B (en)

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Application Number Priority Date Filing Date Title
CN201611223065.8A CN106524503B (en) 2016-12-27 2016-12-27 Heat pump water heater

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CN106524503B CN106524503B (en) 2022-01-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440451A (en) * 2022-03-01 2022-05-06 浙江乾丰智能科技有限公司 Intelligent air energy water heater and using method
CN114719434A (en) * 2022-03-30 2022-07-08 浙江中广电器集团股份有限公司 Control method for exhaust temperature of heat pump water heater with air injection enthalpy increasing function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002106960A (en) * 2000-09-28 2002-04-10 Sanyo Electric Co Ltd Heat pump water heater
CN101482322A (en) * 2009-02-20 2009-07-15 林贤华 Low-temperature heat pump water heater
CN102183107A (en) * 2011-03-30 2011-09-14 上海汉福空气处理设备有限公司 Technological air-conditioning multi-stage hot gas bypass intelligent control system
CN202350305U (en) * 2011-07-13 2012-07-25 苏州云亭新能源技术有限公司 Air energy heat pump water heater with super-low energy consumption
CN204535084U (en) * 2015-01-26 2015-08-05 深圳麦克维尔空调有限公司 Low-temperature heat pump water heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002106960A (en) * 2000-09-28 2002-04-10 Sanyo Electric Co Ltd Heat pump water heater
CN101482322A (en) * 2009-02-20 2009-07-15 林贤华 Low-temperature heat pump water heater
CN102183107A (en) * 2011-03-30 2011-09-14 上海汉福空气处理设备有限公司 Technological air-conditioning multi-stage hot gas bypass intelligent control system
CN202350305U (en) * 2011-07-13 2012-07-25 苏州云亭新能源技术有限公司 Air energy heat pump water heater with super-low energy consumption
CN204535084U (en) * 2015-01-26 2015-08-05 深圳麦克维尔空调有限公司 Low-temperature heat pump water heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440451A (en) * 2022-03-01 2022-05-06 浙江乾丰智能科技有限公司 Intelligent air energy water heater and using method
CN114440451B (en) * 2022-03-01 2023-11-10 北溪特(浙江)科技有限公司 Intelligent air energy water heater and use method thereof
CN114719434A (en) * 2022-03-30 2022-07-08 浙江中广电器集团股份有限公司 Control method for exhaust temperature of heat pump water heater with air injection enthalpy increasing function
CN114719434B (en) * 2022-03-30 2023-10-27 浙江中广电器集团股份有限公司 Control method for exhaust temperature of heat pump water heater with air injection enthalpy increasing function

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Effective date of registration: 20221026

Address after: 100000 Room 809, south of the intersection of Baisha Road and the airport, northeast Songlanbao Village, Shahe Town, Changping District, Beijing

Patentee after: Beijing zhongtianshi Energy Saving Technology Co.,Ltd.

Address before: 529000 Jiangmen vocational and technical college student entrepreneurship incubation base 108, No. 6 ChaoLian Avenue, Pengjiang district, Jiangmen City, Guangdong Province

Patentee before: Li Deming