CN113834214B - Air source heat pump water heater and control method and control device thereof - Google Patents
Air source heat pump water heater and control method and control device thereof Download PDFInfo
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- CN113834214B CN113834214B CN202111037657.1A CN202111037657A CN113834214B CN 113834214 B CN113834214 B CN 113834214B CN 202111037657 A CN202111037657 A CN 202111037657A CN 113834214 B CN113834214 B CN 113834214B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides an air source heat pump water heater and a control method and a control device thereof, and relates to the technical field of air source heat pump water heater control. The control method comprises the following steps: acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger; judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature; if yes, protective measures are taken. By the control method, even if the water flow switch is not installed on a water path of the unit, protective measures can be taken for the unit when the water flow is insufficient, so that when the control method is used and the water flow switch is not installed, the equipment cost can be reduced, the production steps are reduced, the production efficiency is improved, and the effect of reducing cost and improving efficiency is achieved. In addition, when the control method is used and a water flow switch is not arranged on a water path of the unit, the resistance of water in the water path is reduced, so that the lift of the available water pump is improved, and the power consumption of the water pump is reduced; moreover, the water flow switch is not installed, so that the tightness of the water path is ensured.
Description
Technical Field
The invention relates to the technical field of air source heat pump water heater control, in particular to an air source heat pump water heater and a control method and a control device thereof.
Background
At present, the air source heat pump water heater is more and more favored by users due to the advantages of comfort, energy conservation and environmental protection. The principle of the air source heat pump water heater is basically consistent with that of a conventional air source heat pump, and the air source heat pump water heater realizes energy transfer by absorbing heat in air by applying a reverse Carnot principle. Different from a conventional air source heat pump, the air source heat pump water heater adopts a water heat exchanger to firstly transfer heat to a water channel, and then conveys the heat to the tail end of a user through a circulating water pump so as to achieve the purpose of heating or refrigerating.
The circulation in water route needs to provide power with circulating water pump, and when water pump trouble, the water route is dirty stifled or lack of water, will lead to refrigerant side heat can not be carried to user's end, and then lead to the heating effect poor, and simultaneously, the refrigerant side also can lead to the host computer high pressure because the unable release of heat is too high, exhaust temperature is too high etc. trouble to reduce the life of compressor.
In the prior art, in order to prevent insufficient water flow, a water flow switch is usually installed on a main water path to protect faults when the water flow is lower than a set value, but the installation of the water flow switch not only increases the equipment cost, but also increases the production steps and reduces the production efficiency.
Disclosure of Invention
The first purpose of the present invention is to provide a control method for an air source heat pump water heater, so as to solve the technical problems of high equipment cost and low production efficiency of the air source heat pump water heater in the prior art.
The invention provides a control method of an air source heat pump water heater, which is applied to the air source heat pump water heater, wherein the air source heat pump water heater comprises a water heat exchanger, and the control method comprises the following steps:
acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger;
judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature;
if yes, protective measures are taken.
The control method of the air source heat pump water heater provided by the invention can produce the following beneficial effects:
the control method of the air source heat pump water heater provided by the invention obtains the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger, judges the water flow condition of the unit according to the three temperatures, and takes protective measures for the unit when the water flow of the unit is insufficient. Namely, through the control method provided by the invention, even if the water flow switch is not installed on the water path of the unit, the protective measures can be taken for the unit when the water flow is insufficient, so that when the control method is used and the water flow switch is not installed, the equipment cost can be reduced, the production steps can be reduced, the production efficiency can be improved, and the effects of cost reduction and efficiency improvement can be achieved.
In addition, compared with the scheme that a water flow switch is installed on a water path, when the control method provided by the invention is used and the water flow switch is not installed on the water path of the unit, the resistance of water in the water path is reduced, so that the lift of the available water pump is improved, and the power consumption of the water pump is reduced; moreover, the water flow switch is not installed, so that the tightness of a water path is guaranteed, and the water leakage risk caused by installation of the hole can be avoided.
Further, when the air source heat pump water heater is in a heating mode and the compressor and the water pump of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature comprises the following steps:
judging whether the difference value between the middle temperature and the effluent temperature is greater than or equal to a preset first temperature difference or not at least once; wherein the preset first temperature difference is greater than or equal to zero;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, compare the difference of middle part temperature and leaving water temperature with predetermineeing first difference in temperature. When the heating mode is operated, the outlet water temperature is higher than the middle temperature, so when the difference value between the middle temperature and the outlet water temperature is greater than or equal to the preset first temperature difference, the outlet water temperature is not higher than the middle temperature, the measured heat of the refrigerant cannot be transferred to water outside the water heat exchanger, and the water flow of the water channel is not communicated, so that the unit can be controlled to stop and report the water flow fault, and the unit is protected.
Further, when the air source heat pump water heater is in a heating mode and the compressor and the water pump of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature comprises the following steps:
judging whether the difference value between the middle temperature and the effluent temperature is greater than or equal to a preset first temperature difference or not; wherein the preset first temperature difference is greater than or equal to zero;
if yes, controlling the water pump to stop for a preset first time length, then starting again and operating for a preset second time length;
when the water pump is started again and operates for the preset second time period, judging whether the difference value between the middle temperature and the effluent temperature is still larger than or equal to the preset first temperature difference again;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, judge the size of the difference and the first difference in temperature of presetting of middle part temperature and leaving water temperature twice, and control the water pump and shut down and restart between the twice judgement for whether the judgement result is more accurate to discharge is not enough, effectively avoided once judging the erroneous judgement that probably arouses.
Further, when the air source heat pump water heater is in a heating mode and the compressor and the water pump of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the outlet water temperature and the inlet water temperature is larger than or equal to a preset second temperature difference or not at least once; wherein the preset second temperature difference is greater than zero;
if so, prompting the user to clean the water channel in time.
Under this technical scheme, the difference of leaving water temperature and temperature of intaking is compared with presetting the second difference in temperature. Because when the mode of heating of operation, the temperature of intaking should be lower than the play water temperature, and if the water route rivers are unobstructed, the temperature of intaking can not be too much than the play water temperature, so, if the difference more than or equal to of leaving water temperature and the temperature of intaking predetermines the second difference in temperature, it is more than leaving water temperature to explain the temperature of intaking is lower than the temperature of intaking, rivers are unobstructed inadequately, the water route probably has appeared filthy stifled, so can indicate the user in time to wash the water route, thereby both protected the unit, also can improve heating effect.
Further, when the air source heat pump water heater is in a heating mode and the compressor and the water pump of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the outlet water temperature and the inlet water temperature is greater than or equal to a preset second temperature difference; wherein the preset second temperature difference is greater than zero;
if so, controlling the water pump to increase the rotating speed and operate for a preset third time;
when the water pump operates for the preset third time period by increasing the rotating speed, judging whether the difference value between the water outlet temperature and the water inlet temperature is still larger than or equal to the preset second temperature difference;
if yes, prompting the user to clean the waterway in time.
Under this technical scheme, judge twice the size of the difference of leaving water temperature and temperature of intaking and predetermineeing the second difference in temperature, and control the water pump between twice judgement and shut down and restart for the judged result whether not the discharge is not enough is more accurate, has effectively avoided the erroneous judgement that once judgement probably arouses.
Further, when the air source heat pump water heater is in the heating mode and its compressor and water pump are all in the on-state, according to the temperature of intaking, middle part temperature with go out the water temperature, judge whether the step that air source heat pump water heater's discharge is not enough, still include:
judging whether the difference value between the outlet water temperature and the inlet water temperature is greater than a preset third temperature difference or not; wherein the preset third temperature difference is greater than the preset second temperature difference;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, go on the difference with the predetermined third difference in temperature with the temperature of intaking with the leaving water temperature, and predetermine the third difference in temperature and be greater than predetermineeing the second difference in temperature, so, if leaving water temperature and the difference of the temperature of intaking more than or equal to predetermine the third difference in temperature, explain that the temperature of intaking is lower than leaving water temperature too much, rivers are unobstructed, and the water route probably is filthy stifled serious, also can have other troubles, so can control the unit and shut down and report the rivers trouble, thereby protection unit.
Further, when the air source heat pump water heater is in a cooling mode and the compressor and the water pump of the air source heat pump water heater are both in an on state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature includes:
judging whether the difference value between the middle temperature and the effluent temperature is less than or equal to a preset fourth temperature difference at least once; wherein the preset fourth temperature difference is less than or equal to zero;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, the difference of middle part temperature and leaving water temperature is compared with predetermineeing the fourth difference in temperature. When the refrigeration mode is operated, the outlet water temperature is lower than the middle temperature, so when the difference value between the middle temperature and the outlet water temperature is smaller than or equal to the preset first temperature difference, the outlet water temperature is not lower than the middle temperature, the measured cold quantity of the refrigerant cannot be transferred to water outside the water heat exchanger, and the water flow of the water channel is not communicated, so that the unit can be controlled to stop and the water flow fault can be reported, and the unit is protected.
Further, when the air source heat pump water heater is in a refrigeration mode and both the compressor and the water pump of the air source heat pump water heater are in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the water inlet temperature, the middle temperature and the water outlet temperature comprises the following steps:
judging whether the difference value between the middle temperature and the effluent temperature is less than or equal to a preset fourth temperature difference or not; wherein the preset fourth temperature difference is less than or equal to zero;
if yes, controlling the water pump to stop for a preset fourth time, then starting again and operating for a preset fifth time;
when the water pump is started again and operates for the preset fifth time period, judging whether the difference value between the middle temperature and the effluent temperature is still less than or equal to a preset fourth temperature difference again;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, the size of the difference of middle part temperature and leaving water temperature and the fourth difference of predetermineeing is judged twice, and control water pump shut down and restart between the twice judgement for the judged result whether not the discharge is not enough is more accurate, has effectively avoided the erroneous judgement that once judgement probably arouses.
Further, when the air source heat pump water heater is in a cooling mode and the compressor and the water pump of the air source heat pump water heater are both in an on state, the step of determining whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further includes:
judging whether the difference value between the water outlet temperature and the water inlet temperature is smaller than or equal to a preset fifth temperature difference or not at least once; wherein the preset fifth temperature difference is less than zero;
if yes, prompting the user to clean the waterway in time.
Under this technical scheme, the difference of leaving water temperature and temperature of intaking is compared with the fifth difference of temperature of predetermineeing. Because when operation refrigeration mode, the temperature of intaking should be higher than the play water temperature, and if the water route rivers are unobstructed, the temperature of intaking can not be too much higher than the play water temperature, so, if the difference less than or equal to of leaving water temperature and temperature of intaking predetermines the fifth difference in temperature, it is more than the temperature of intaking to explain the leaving water temperature, that is, it is more than the temperature of intaking, rivers are unobstructed inadequately, filthy stifled has probably appeared in the water route, so can the suggestion user in time wash the water route, thereby both protected the unit, also can improve the heating effect.
Further, when the air source heat pump water heater is in a refrigeration mode and both the compressor and the water pump of the air source heat pump water heater are in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the water inlet temperature, the middle temperature and the water outlet temperature further comprises the steps of:
judging whether the difference value between the outlet water temperature and the inlet water temperature is less than or equal to a preset fifth temperature difference or not; wherein the preset fifth temperature difference is less than zero;
if so, controlling the water pump to increase the rotating speed and operate for a preset sixth time;
when the water pump operates for the preset sixth time period by increasing the rotating speed, judging whether the difference value between the water outlet temperature and the water inlet temperature is still less than or equal to the preset fifth temperature difference;
if yes, prompting the user to clean the waterway in time.
Under this technical scheme, judge twice the size of the difference of leaving water temperature and temperature of intaking and predetermineeing the fifth difference in temperature, and control the water pump between twice judgement and shut down and restart for the judgement result whether not the discharge is not enough is more accurate, has effectively avoided the erroneous judgement that once judgement probably arouses.
Further, when the air source heat pump water heater is in a refrigeration mode and both the compressor and the water pump of the air source heat pump water heater are in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the water inlet temperature, the middle temperature and the water outlet temperature further comprises the steps of:
judging whether the difference value between the outlet water temperature and the inlet water temperature is smaller than a preset sixth temperature difference or not; wherein the preset sixth temperature difference is less than the preset fifth temperature difference;
if yes, the unit is controlled to stop and water flow faults are reported.
Under this technical scheme, go on the difference with the difference of the temperature of intaking with the leaving water temperature and predetermine the sixth difference in temperature and compare, and predetermine the sixth difference in temperature and be less than predetermineeing the fifth difference in temperature, so, if leaving water temperature and the difference of the temperature of intaking be less than or equal to predetermine the sixth difference in temperature, show that leaving water temperature is lower than the temperature of intaking too much, that is, the temperature of intaking is higher than leaving water temperature too much, rivers are not unobstructed, the water route probably is dirty stifled serious, also can have other troubles, the event can control the unit and shut down and report rivers trouble, thereby protection unit.
Further, after the compressor of the air source heat pump water heater operates for a preset seventh time, the water inlet temperature, the middle temperature and the water outlet temperature are obtained.
Under this technical scheme, after the compressor was opened and was operated a period, namely the unit gets into steady operation state after, acquires each temperature again and judges, and each temperature value that acquires is more accurate.
The second objective of the present invention is to provide a control device for an air source heat pump water heater, so as to solve the technical problems of high equipment cost and low production efficiency of the air source heat pump water heater in the prior art.
The invention provides a control device of an air source heat pump water heater, which is applied to the air source heat pump water heater, wherein the air source heat pump water heater comprises a water heat exchanger, and the control device comprises:
the acquisition module is used for acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger;
the judging module is used for judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature; if yes, protective measures are taken.
The air source heat pump water heater control device provided by the invention can obtain all the beneficial effects of the air source heat pump water heater control method when in use, and therefore, the detailed description is omitted.
The third objective of the present invention is to provide an air source heat pump water heater, so as to solve the technical problems of high equipment cost and low production efficiency of the air source heat pump water heater in the prior art.
The invention provides an air source heat pump water heater, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the control method.
The air source heat pump water heater provided by the invention can obtain all the beneficial effects of the control method of the air source heat pump water heater, and therefore, the detailed description is omitted.
A fourth object of the present invention is to provide a computer-readable storage medium, so as to solve the technical problems of high equipment cost and low production efficiency of an air source heat pump water heater in the prior art.
The computer-readable storage medium provided by the present invention stores a computer program, and the computer program is read by a processor and executed to implement the control method.
In the computer-readable storage medium provided by the invention, when the computer program stored in the computer-readable storage medium is read and run, all the beneficial effects of the control method of the air source heat pump water heater can be obtained, and therefore, the detailed description is omitted here.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air source heat pump water heater provided in an embodiment of the present invention;
fig. 2 is a logic block diagram of a control method of an air source heat pump water heater according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air source heat pump water heater in a heating mode according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of an air source heat pump water heater in a cooling mode according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an air source heat pump water heater control device according to an embodiment of the present invention.
Description of the reference numerals:
110-a compressor; 120-electronic expansion valve; 130-outdoor unit heat exchanger; 140-a gas-liquid separator; a 150-four-way reversing valve;
210-a water heat exchanger; 220-middle temperature sensor;
310-a water pump; 320-water inlet temperature sensor; 330-water outlet temperature sensor; 340-user end heat exchanger;
100-an acquisition module; 200-a judging module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a control method of an air source heat pump water heater, which is applied to the air source heat pump water heater, the air source heat pump water heater includes a water heat exchanger 210, as shown in fig. 2, the control method includes:
s100, acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger 210.
Specifically, as shown in fig. 1, a water path of the air source heat pump water heater is provided with an inlet water temperature sensor 320 and an outlet water temperature sensor 330, which are respectively used for measuring an inlet water temperature and an outlet water temperature of the water heat exchanger 210, and a middle temperature sensor 220 is arranged at a middle position of the water heat exchanger 210 and is used for measuring a middle temperature of the water heat exchanger 210.
And S200, judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature.
Specifically, the determination may be made separately for different operation modes (heating mode and cooling mode).
And S300, if so, taking protective measures.
Specifically, the protective measures include 'controlling the unit to stop and reporting the water flow fault' and 'prompting the user to clean the water path in time', and certainly, both can also include, namely 'controlling the unit to stop and reporting the water flow fault, and prompting the user to clean the water path in time'.
The control method for the air source heat pump water heater provided by the embodiment obtains the inlet water temperature, the middle temperature and the outlet water temperature of the water heat exchanger 210, judges the water flow condition of the unit according to the three temperatures, and takes protective measures for the unit when the water flow of the unit is insufficient. That is, with the control method provided in this embodiment, even if the water flow switch is not installed on the water path of the unit, the unit can still be protected when the water flow is insufficient, so that when the water flow switch is not installed by using the control method, the equipment cost can be reduced, the production steps can be reduced, the production efficiency can be improved, and the effect of cost reduction and efficiency improvement can be achieved.
In addition, compared with the scheme that the water flow switch is installed on the water path, when the control method provided by the embodiment is used and the water flow switch is not installed on the water path of the unit, the resistance of water in the water path is reduced, so that the lift of the available water pump is improved, and the power consumption of the water pump is reduced; moreover, the water flow switch is not installed, so that the tightness of a water path is guaranteed, and the water leakage risk caused by installation of the hole can be avoided.
In this embodiment, as shown in fig. 2, the control method further includes:
and S400, if not, controlling the unit to normally operate.
Specifically, in this embodiment, when the air source heat pump water heater is in the heating mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 includes:
judging whether the difference value between the primary middle temperature and the outlet water temperature is greater than or equal to a preset first temperature difference or not; wherein the preset first temperature difference is greater than or equal to zero;
if yes, the unit is controlled to stop and water flow faults are reported.
According to the technical scheme, the difference value of the middle temperature and the outlet water temperature is compared with a preset first temperature difference. When the heating mode is operated, the outlet water temperature is higher than the middle temperature, so when the difference value between the middle temperature and the outlet water temperature is greater than or equal to the preset first temperature difference, the outlet water temperature is not higher than the middle temperature, the measured heat of the refrigerant cannot be transferred to water outside the water heat exchanger 210, and the water flow of the water channel is not communicated, so that the unit can be controlled to stop and the water flow fault can be reported, and the unit is protected.
More specifically, in this embodiment, as shown in fig. 3, when the air-source heat pump water heater is in the heating mode and the compressor 110 and the water pump 310 of the air-source heat pump water heater are both in the on state, the step S200 includes:
s210, judging whether the difference value between the middle temperature and the effluent temperature is greater than or equal to a preset first temperature difference. If T WC Is the middle temperature, T WO For the temperature of the water outlet, delta T 1 If the first temperature difference is preset, step S210 is: judging whether the middle temperature and the outlet water temperature meet T WC -T WO ≥△T 1 Wherein the value range of the preset first temperature difference can be more than or equal to 0℃ and less than or equal to delta T 1 5 ℃ or less, preferably, deltaT 1 ＝0℃。
And S212, if yes, controlling the water pump 310 to stop for a preset first time, then starting again and operating for a preset second time.
Specifically, the preset first time period may be 3s, and the preset second time period may be 1min. Of course, in other embodiments of the present application, the preset first duration may also be other values, and the preset second duration may also be other values, for example, the preset first duration is 5s, and the preset second duration is 45s.
And S214, when the water pump 310 is started again and operates for the preset second time period, judging again whether the difference value between the middle temperature and the effluent temperature is still larger than or equal to the preset first temperature difference.
And S310, if yes, controlling the unit to stop and reporting a water flow fault.
According to the technical scheme, the difference value between the middle temperature and the outlet water temperature and the preset first temperature difference are judged twice, and the water pump 310 is controlled to stop and then start between the two judgments, so that the judgment result of whether the water flow is insufficient is more accurate, and the misjudgment possibly caused by one judgment is effectively avoided.
Specifically, in this embodiment, when the air source heat pump water heater is in the heating mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 further includes:
judging whether the difference value between the primary water outlet temperature and the primary water inlet temperature is greater than or equal to a preset second temperature difference or not; wherein the preset second temperature difference is larger than zero;
if so, prompting the user to clean the water channel in time.
According to the technical scheme, the difference value of the water outlet temperature and the water inlet temperature is compared with the preset second temperature difference. Because when the mode of heating of operation, the temperature of intaking should be lower than the play water temperature, and if the water route rivers are unobstructed, the temperature of intaking can not be too much than the play water temperature, so, if the difference more than or equal to of leaving water temperature and the temperature of intaking predetermines the second difference in temperature, it is more than leaving water temperature to explain the temperature of intaking is lower than the temperature of intaking, rivers are unobstructed inadequately, the water route probably has appeared filthy stifled, so can indicate the user in time to wash the water route, thereby both protected the unit, also can improve heating effect.
More specifically, in this embodiment, as shown in fig. 3, when the air source heat pump water heater is in the heating mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 further includes:
s220, judging whether the difference value between the outlet water temperature and the inlet water temperature is larger than or equal to a preset second temperature difference or not; if T is WI Is the temperature of water inlet, delta T 2 If the second temperature difference is preset, step S220 is: judging whether the water outlet temperature and the water inlet temperature meet T WO -T WI ≥△T 2 Wherein the value range of the preset second temperature difference can be more than or equal to 8 DEG C 2 12 ℃ or less, preferably, deltaT 2 ＝10℃。
S222, if yes, controlling the water pump 310 to increase the rotating speed and operate for a preset third time period;
specifically, the preset third time period may be 1min, and of course, in other embodiments of the present application, the preset third time period may also be other values, for example, the preset third time period is 90s.
In addition, the water pump 310 may increase the rotational speed to a top gear.
S224, after the water pump 310 is operated for a preset third time period at a higher rotating speed, judging whether the difference value between the water outlet temperature and the water inlet temperature is still larger than or equal to a preset second temperature difference;
and S320, if so, prompting a user to clean the water channel in time.
According to the technical scheme, the difference value between the outlet water temperature and the inlet water temperature and the preset second temperature difference are judged twice, the water pump 310 is controlled to stop and then start between the two judgments, so that the judgment result of whether the water flow is insufficient is more accurate, and the misjudgment possibly caused by one judgment is effectively avoided.
Specifically, in this embodiment, as shown in fig. 3, when the air source heat pump water heater is in the heating mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 further includes:
s230, judging whether the difference value between the outlet water temperature and the inlet water temperature is greater than a preset third temperature difference; wherein the preset third temperature difference is greater than the preset second temperature difference; if Δ T 3 If the third temperature difference is preset, step S230 is: judging whether the water outlet temperature and the water inlet temperature meet T WO -T WI ≥△T 3 Wherein the preset third temperature difference can be set to 12℃ & ltDelta T 3 18 ℃ or less, preferably, deltaT 3 ＝15℃。
And S310, if so, controlling the unit to stop and reporting a water flow fault.
This technical scheme compares leaving water temperature and the difference of the temperature of intaking with predetermineeing the third difference in temperature, and predetermine the third difference in temperature and be greater than predetermineeing the second difference in temperature, so, if leaving water temperature and the difference of the temperature of intaking more than or equal to predetermineeing the third difference in temperature, explain that the temperature of intaking is lower than leaving water temperature too much, rivers are unobstructed, the water route probably is filthy stifled serious, also can have other troubles, so can control the unit and shut down and report the rivers trouble, thereby protection unit.
Specifically, in this embodiment, when the air source heat pump water heater is in the cooling mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 includes:
judging whether the difference value between the middle temperature and the effluent temperature is less than or equal to a preset fourth temperature difference or not at least once; wherein the fourth temperature difference is not more than zero;
if yes, the unit is controlled to stop and water flow faults are reported.
According to the technical scheme, the difference value between the middle temperature and the outlet water temperature is compared with the preset fourth temperature difference. When the refrigeration mode is operated, the outlet water temperature is lower than the middle temperature, so that when the difference value between the middle temperature and the outlet water temperature is smaller than or equal to the preset first temperature difference, the outlet water temperature is not lower than the middle temperature, the measured cold quantity of the refrigerant cannot be transmitted to the water outside the water heat exchanger 210, and the water flow of the water channel is not communicated, so that the unit can be controlled to stop and the water flow fault can be reported, and the unit is protected.
More specifically, in this embodiment, as shown in fig. 4, when the air source heat pump water heater is in the cooling mode and both the compressor 110 and the water pump 310 are in the on state, the step S200 includes:
s240, judging the difference value between the middle temperature and the outlet water temperatureWhether the temperature difference is less than or equal to a preset fourth temperature difference or not; if Δ T 4 If the fourth temperature difference is preset, step S240 is: judging whether the middle temperature and the outlet water temperature meet T WC -T WO ≤△T 4 Wherein the value range of the preset fourth temperature difference can be more than or equal to delta T at-5 DEG C 1 0 ℃ or less, preferably,. DELTA.T 1 ＝0℃。
And S242, if yes, controlling the water pump 310 to stop for a preset fourth time, then starting again and operating for a preset fifth time.
Specifically, the preset fourth time period may be 3s, and the preset fifth time period may be 1min. Of course, in other embodiments of the present application, the preset fourth time period may also be other values, and the preset fifth time period may also be other values, for example, the preset fourth time period is 5s, and the preset fifth time period is 45s.
S244, when the water pump 310 is started again and operates for a preset fifth time period, judging again whether the difference value between the middle temperature and the effluent temperature is still less than or equal to a preset fourth temperature difference;
and S310, if yes, controlling the unit to stop and reporting a water flow fault.
According to the technical scheme, the difference value between the middle temperature and the outlet water temperature and the preset fourth temperature difference are judged twice, and the water pump 310 is controlled to stop and then start between the two judgments, so that the judgment result of whether the water flow is insufficient is more accurate, and the misjudgment possibly caused by one judgment is effectively avoided.
Specifically, in this embodiment, when the air source heat pump water heater is in the cooling mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 further includes:
judging whether the difference value between the primary effluent temperature and the inlet water temperature is less than or equal to a preset fifth temperature difference or not; wherein the preset fifth temperature difference is smaller than zero;
if so, prompting the user to clean the water channel in time.
According to the technical scheme, the difference value of the water outlet temperature and the water inlet temperature is compared with the preset fifth temperature difference. Because when operation refrigeration mode, the temperature of intaking should be higher than the play water temperature, and if the water route rivers are unobstructed, the temperature of intaking can not be too much higher than the play water temperature, so, if the difference less than or equal to of leaving water temperature and temperature of intaking predetermines the fifth difference in temperature, it is more than the temperature of intaking to explain the leaving water temperature, that is, it is more than the temperature of intaking, rivers are unobstructed inadequately, filthy stifled has probably appeared in the water route, so can the suggestion user in time wash the water route, thereby both protected the unit, also can improve the heating effect.
More specifically, in this embodiment, as shown in fig. 4, when the air source heat pump water heater is in the cooling mode and the compressor 110 and the water pump 310 are both in the on state, the step S200 further includes:
s250, judging whether the difference value between the outlet water temperature and the inlet water temperature is less than or equal to a preset fifth temperature difference; if Δ T 5 If the fifth temperature difference is preset, step S250 is: judging whether the water outlet temperature and the water inlet temperature meet T WO -T WI ≤△T 5 Wherein the value range of the preset fifth temperature difference can be between-12 ℃ and delta T 2 ≦ 8 deg.C, preferably, deltaT 2 ＝-10℃。
S252, if yes, controlling the water pump 310 to increase the rotating speed to operate for a preset sixth time;
specifically, the preset sixth time period may be 1min, and certainly, in other embodiments of the present application, the preset sixth time period may also be other values, for example, the preset sixth time period is 90s.
In addition, the water pump 310 may increase the speed to the highest gear.
S254, after the water pump 310 is operated for a preset sixth time period at a higher rotating speed, whether the difference value between the outlet water temperature and the inlet water temperature is still less than or equal to a preset fifth temperature difference is judged again;
and S320, if yes, prompting a user to clean the waterway in time.
According to the technical scheme, the difference value between the outlet water temperature and the inlet water temperature and the preset fifth temperature difference are judged twice, the water pump 310 is controlled to stop and then start between the two judgments, so that the judgment result of whether the water flow is insufficient is more accurate, and the misjudgment possibly caused by one judgment is effectively avoided.
More specifically, in this embodiment, as shown in fig. 4, when the air-source heat pump water heater is in the cooling mode and the compressor 110 and the water pump 310 of the air-source heat pump water heater are both in the on state, the step S200 further includes:
s260, judging whether the difference value between the outlet water temperature and the inlet water temperature is smaller than a preset sixth temperature difference; wherein the preset sixth temperature difference is smaller than the preset fifth temperature difference; if Δ T 6 If the sixth temperature difference is preset, step S260 is: judging whether the outlet water temperature and the inlet water temperature meet T WO -T WI ≤△T 6 Wherein the value range of the preset sixth temperature difference can be between minus 18 ℃ and delta T 6 < -12 ℃, preferably, Δ T 6 ＝-15℃。
And S310, if yes, controlling the unit to stop and reporting a water flow fault.
This technical scheme, the difference with the temperature of intaking with the leaving water temperature carries out the comparison with predetermineeing the sixth difference in temperature, and predetermine the sixth difference in temperature and be less than predetermineeing the fifth difference in temperature, so, if leaving water temperature and the difference less than or equal to of temperature of intaking predetermineeing the sixth difference in temperature, explain that leaving water temperature is lower than the temperature of intaking too much, that is, the temperature of intaking is higher than leaving water temperature too much, rivers are unsmooth, the water route probably is dirty stifled serious, also can have other troubles, the event can control the unit and shut down and report rivers trouble, thereby protection unit.
Specifically, in this embodiment, as shown in fig. 3 and 4, after the compressor 100 of the air source heat pump water heater operates for a preset seventh time period, the inlet water temperature, the middle temperature, and the outlet water temperature are obtained. After the compressor 110 is started and operated for a period of time, that is, after the unit enters a stable operation state, each temperature is obtained and judged, and each obtained temperature value is more accurate. The preset seventh time period may be 2min, and of course, in other embodiments of the application, the preset seventh time period may also be other values, for example, the preset seventh time period is 3min.
The present embodiment further provides a control device for an air source heat pump water heater, which is applied to an air source heat pump water heater, where the air source heat pump water heater includes a water heat exchanger 210, as shown in fig. 5, the control device includes:
an obtaining module 100, configured to obtain an inlet water temperature, a middle temperature, and an outlet water temperature of the water heat exchanger 210;
the judging module 200 is used for judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature; if yes, protective measures are taken.
The air source heat pump water heater control device provided in this embodiment can obtain all the beneficial effects of the above air source heat pump water heater control method when in use, and therefore, the details are not described herein again.
The embodiment also provides an air source heat pump water heater, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program is read by the processor and runs on the processor to realize the control method.
As shown in fig. 1, the air source heat pump water heater provided by this embodiment has a specific structure: the refrigerant side comprises a compressor 110, an outdoor heat exchanger 130, a gas-liquid separator 140, a four-way reversing valve 150 and an electronic expansion valve 120; the water side comprises a water pump 310 and a user end heat exchanger 340, and a water inlet temperature sensor 320 and a water outlet temperature sensor 330 are arranged on the water path; refrigerant side and water side exchange heat or cold volume through middle water heat exchanger 210, and middle part temperature sensor 220 is installed to water heat exchanger 210's mid position, and above structure is prior art, and the difference of the air source heat pump water heater that this embodiment provided lies in: a water flow switch is not arranged on a water path on the water side, and whether the water flow is insufficient or not is judged by applying the control method and protective measures are taken in time.
The air source heat pump water heater provided by the embodiment can obtain all the beneficial effects of the control method of the air source heat pump water heater, and therefore, the detailed description is omitted here.
The present embodiment also provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is read and executed by a processor, the control method is implemented.
In the computer-readable storage medium provided in this embodiment, when the computer program stored in the computer-readable storage medium is read and executed, all the beneficial effects of the above-mentioned control method for the air source heat pump water heater can be obtained, and therefore, the details are not described herein again.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An air source heat pump water heater control method is applied to an air source heat pump water heater, the air source heat pump water heater comprises a water heat exchanger (210), and the control method comprises the following steps:
acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger (210);
judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature;
if yes, taking protective measures;
when the air source heat pump water heater is in a heating mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature comprises the following steps of:
judging whether the difference value between the middle temperature and the effluent temperature is greater than or equal to a preset first temperature difference or not; wherein the preset first temperature difference is greater than or equal to zero;
if yes, controlling the water pump (310) to stop for a preset first time, then starting again and operating for a preset second time;
when the water pump (310) is started again and operates for the preset second time period, whether the difference value between the middle temperature and the effluent temperature is still larger than or equal to the preset first temperature difference is judged again;
if yes, controlling the unit to stop and reporting water flow faults;
when the air source heat pump water heater is in a heating mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an open state, the step of judging whether the water flow of the air source heat pump water heater is insufficient according to the water inlet temperature, the middle temperature and the water outlet temperature further comprises the following steps:
judging whether the difference value between the water outlet temperature and the water inlet temperature is greater than or equal to a preset second temperature difference or not; wherein the preset second temperature difference is greater than zero;
if yes, controlling the water pump (310) to increase the rotating speed to operate for a preset third time period;
when the water pump (310) operates for the preset third time period at a higher rotating speed, judging whether the difference value between the outlet water temperature and the inlet water temperature is still larger than or equal to the preset second temperature difference;
if yes, prompting the user to clean the waterway in time.
2. The method for controlling an air source heat pump water heater according to claim 1, wherein when the air source heat pump water heater is in a heating mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the outlet water temperature and the inlet water temperature is greater than a preset third temperature difference or not; wherein the preset third temperature difference is greater than the preset second temperature difference;
if yes, the unit is controlled to stop and water flow faults are reported.
3. The method for controlling an air source heat pump water heater according to claim 1, wherein when the air source heat pump water heater is in a cooling mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow rate of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature comprises:
judging whether the difference value between the middle temperature and the effluent temperature is less than or equal to a preset fourth temperature difference or not at least once; wherein the preset fourth temperature difference is less than or equal to zero;
if yes, the unit is controlled to stop and water flow faults are reported.
4. The method for controlling an air source heat pump water heater according to claim 1, wherein when the air source heat pump water heater is in a cooling mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow rate of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature comprises:
judging whether the difference value between the middle temperature and the effluent temperature is less than or equal to a preset fourth temperature difference or not; wherein the preset fourth temperature difference is less than or equal to zero;
if yes, the water pump (310) is controlled to be stopped for a preset fourth time period, then the water pump is started again, and the water pump is operated for a preset fifth time period;
when the water pump (310) is started again and operates for the preset fifth time period, judging whether the difference value between the middle temperature and the effluent temperature is still less than or equal to a preset fourth temperature difference again;
if yes, the unit is controlled to stop and water flow faults are reported.
5. The method for controlling the air source heat pump water heater according to claim 3 or 4, wherein when the air source heat pump water heater is in a cooling mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the water outlet temperature and the water inlet temperature is smaller than or equal to a preset fifth temperature difference or not at least once; wherein the preset fifth temperature difference is less than zero;
if yes, prompting the user to clean the waterway in time.
6. The method for controlling the air source heat pump water heater according to claim 3 or 4, wherein when the air source heat pump water heater is in a cooling mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the outlet water temperature and the inlet water temperature is less than or equal to a preset fifth temperature difference; wherein the preset fifth temperature difference is less than zero;
if yes, controlling the water pump (310) to increase the rotating speed to operate for a preset sixth time;
when the water pump (310) operates at a higher rotating speed for the preset sixth time period, judging whether the difference value between the outlet water temperature and the inlet water temperature is still less than or equal to the preset fifth temperature difference;
if so, prompting the user to clean the water channel in time.
7. The method for controlling an air source heat pump water heater according to claim 6, wherein when the air source heat pump water heater is in a cooling mode and a compressor (110) and a water pump (310) of the air source heat pump water heater are both in an on state, the step of determining whether the water flow of the air source heat pump water heater is insufficient according to the inlet water temperature, the middle temperature and the outlet water temperature further comprises:
judging whether the difference value between the outlet water temperature and the inlet water temperature is smaller than a preset sixth temperature difference or not; wherein the preset sixth temperature difference is less than the preset fifth temperature difference;
if yes, the unit is controlled to stop and water flow faults are reported.
8. An air source heat pump water heater control device, which is used for implementing the control method according to any one of claims 1 to 7, and is applied to an air source heat pump water heater, wherein the air source heat pump water heater comprises a water heat exchanger, and the control device comprises:
the acquisition module (100) is used for acquiring the water inlet temperature, the middle temperature and the water outlet temperature of the water heat exchanger;
the judging module (200) is used for judging whether the water flow of the air source heat pump water heater is insufficient or not according to the water inlet temperature, the middle temperature and the water outlet temperature; if yes, protective measures are taken.
9. An air-source heat pump water heater comprising a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the control method according to any one of claims 1 to 7.
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| CN115327888B (en) * | 2022-08-22 | 2023-04-07 | 宁波奥克斯电气股份有限公司 | PID algorithm of circulating water pump flow, direct-current circulating water pump and air energy heat pump |
| CN115127194B (en) * | 2022-08-25 | 2022-11-25 | 蘑菇物联技术（深圳）有限公司 | Method, equipment and medium for detecting faults of central air conditioner water chilling unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202836A (en) * | 2015-09-08 | 2015-12-30 | 珠海格力电器股份有限公司 | Water flow detection method, device and system for hot water machine unit |
| CN107062624A (en) * | 2017-05-08 | 2017-08-18 | 珠海格力电器股份有限公司 | The water route method for detecting abnormality and detecting system of air energy thermal water dispenser |
| CN107300202A (en) * | 2017-07-06 | 2017-10-27 | 广东美的暖通设备有限公司 | Control method, system, computer equipment and the readable storage medium storing program for executing of hydraulic module |
| CN109506319A (en) * | 2018-11-21 | 2019-03-22 | 珠海格力电器股份有限公司 | Heating machine and its automatic freezing-protective control method |
| CN111536711A (en) * | 2020-04-08 | 2020-08-14 | 珠海格力电器股份有限公司 | Heat pump hot water unit and control method for water flow abnormity thereof |
-
2021
- 2021-09-06 CN CN202111037657.1A patent/CN113834214B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202836A (en) * | 2015-09-08 | 2015-12-30 | 珠海格力电器股份有限公司 | Water flow detection method, device and system for hot water machine unit |
| CN107062624A (en) * | 2017-05-08 | 2017-08-18 | 珠海格力电器股份有限公司 | The water route method for detecting abnormality and detecting system of air energy thermal water dispenser |
| CN107300202A (en) * | 2017-07-06 | 2017-10-27 | 广东美的暖通设备有限公司 | Control method, system, computer equipment and the readable storage medium storing program for executing of hydraulic module |
| CN109506319A (en) * | 2018-11-21 | 2019-03-22 | 珠海格力电器股份有限公司 | Heating machine and its automatic freezing-protective control method |
| CN111536711A (en) * | 2020-04-08 | 2020-08-14 | 珠海格力电器股份有限公司 | Heat pump hot water unit and control method for water flow abnormity thereof |
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Effective date of registration: 20221024 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant after: NINGBO AUX ELECTRIC Co.,Ltd. Applicant after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant before: NINGBO AUX ELECTRIC Co.,Ltd. Applicant before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |
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