CN114322249A - Exhaust pressure adjusting method and device of air conditioner and air conditioner - Google Patents
Exhaust pressure adjusting method and device of air conditioner and air conditioner Download PDFInfo
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Abstract
The invention discloses an exhaust pressure adjusting method and device of an air conditioner and the air conditioner, and relates to the technical field of air conditioners, wherein the exhaust pressure adjusting method of the air conditioner comprises the following steps: detecting the outdoor environment temperature and the starting capacity of the indoor unit, and judging whether the exhaust pressure regulation condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit; if yes, determining a target superheat degree of the indoor unit based on the outdoor environment temperature, and adjusting an expansion valve of the indoor unit based on the target superheat degree; and monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature. The invention can avoid the frequent high-pressure protection of the compressor, adjust the refrigerant circulation quantity, improve the refrigerating capacity of the indoor unit and improve the operation reliability of the air conditioner and the comfort of the indoor environment.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an exhaust pressure adjusting method and device of an air conditioner and the air conditioner.
Background
At present, when an air conditioner operates in a cooling mode at high temperature, because the heat exchange efficiency of an outdoor heat exchanger at high temperature is low, the exhaust pressure of a compressor is high, high-pressure protection shutdown or frequent frequency limiting and frequency reducing are easy to trigger, in order to enable the exhaust pressure to operate in a reasonable range, the operating frequency of the compressor is generally limited by the existing exhaust pressure adjusting technology, but the cooling capacity of an indoor unit is reduced at the same time, and the indoor environment comfort is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides an exhaust pressure adjusting method and device of an air conditioner and the air conditioner, which can avoid frequent high-pressure protection of a compressor and improve the operation reliability and indoor environment comfort of the air conditioner.
According to an embodiment of the present invention, there is provided a discharge pressure adjusting method of an air conditioner, including: detecting the outdoor environment temperature and the starting capacity of an indoor unit, and judging whether an exhaust pressure regulation condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit; if yes, determining a target superheat degree of an indoor unit based on the outdoor environment temperature, and adjusting an expansion valve of the indoor unit based on the target superheat degree; and monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature.
By adopting the technical scheme, the new target superheat degree is automatically calculated based on the outdoor environment temperature so as to adjust the opening degree of the expansion valve corresponding to the indoor unit, the purpose of adjusting the exhaust pressure of the compressor is achieved, frequent high-pressure protection of the compressor is avoided, meanwhile, the target superheat degree is corrected when the exhaust temperature is high so as to adjust the circulation quantity of the refrigerant, the refrigerating capacity of the indoor unit is improved, and the operation reliability of the air conditioner and the indoor environment comfort are improved.
Preferably, the target degree of superheat is inversely related to the outdoor ambient temperature.
By adopting the technical scheme, when the outdoor environment temperature is higher, the target superheat degree is smaller, the opening degree of the expansion valve of the indoor unit is increased, and the flow of the refrigerant is increased, so that the exhaust pressure of the compressor is reduced, and the effective regulation of the exhaust pressure is realized.
Preferably, the step of determining the target degree of superheat of the indoor unit based on the outdoor ambient temperature includes: acquiring a current preset target superheat degree, and determining the target superheat degree of the indoor unit based on the preset target superheat degree and the outdoor environment temperature; the calculation formula of the target superheat degree is as follows:
S＝(S1-S2)/(T1-T2)×Ta+(S2×T1-S1×T2)/(T1-T2)
wherein S is the target superheat degree, S1 is the preset target superheat degree, S2 is the lowest allowable superheat degree, Ta is the outdoor environment temperature, T1 is an outer ring temperature threshold value, and T2 is the maximum outdoor environment temperature of the air conditioner allowed to operate.
By adopting the technical scheme, the target superheat degree is calculated based on the calculation formula, the rationality of the target superheat degree can be calculated according to the improvement, the target superheat degree corresponds to the outdoor environment temperature, and the refrigerating capacity of the indoor unit in the high-temperature environment is improved on the basis of ensuring the operation stability of the air conditioner.
Preferably, the step of correcting the target degree of superheat based on the exhaust gas temperature includes: determining a superheat degree compensation value based on the exhaust temperature, and determining a corrected target superheat degree based on the superheat degree compensation value and the target superheat degree so that an air conditioner adjusts an expansion valve of the indoor unit based on the corrected target superheat degree; wherein the corrected target superheat degree is a target superheat degree-superheat degree compensation value, and the superheat degree compensation value is in positive correlation with the exhaust gas temperature.
By adopting the technical scheme, the superheat compensation value is in positive correlation with the exhaust temperature, the higher the exhaust temperature of the compressor is, the larger the superheat compensation value is, the smaller the corrected target superheat is, and the opening degree of the expansion valve is adjusted based on the corrected target superheat so as to improve the refrigerating capacity of the indoor unit in a high-temperature environment and improve the comfort of the indoor environment.
Preferably, the calculation formula of the superheat compensation value is as follows:
K＝Kmax×(Td-T3)/(Tmax-T3)
k is the superheat degree compensation value, Td is the exhaust temperature, T3 is an exhaust temperature threshold value, Kmax is a superheat degree maximum compensation value, and Tmax is a compressor maximum exhaust temperature.
By adopting the technical scheme, the superheat compensation value is calculated by adopting the superheat compensation value calculation formula, so that reasonable correction on the target superheat can be realized, the refrigerant flow can be automatically adjusted according to the exhaust temperature of the compressor, the refrigerating capacity of the indoor unit is improved, and the operation reliability and the comfort are both considered.
Preferably, the step of determining whether the discharge pressure regulation condition is satisfied based on the outdoor ambient temperature and the indoor unit startup capacity includes: judging whether the outdoor environment temperature is greater than an outer ring temperature threshold value or not, and whether the starting capacity of the indoor unit is greater than a preset capacity or not; and when the outdoor environment temperature is greater than the outer ring temperature threshold value and the starting capacity of the indoor unit is greater than the preset capacity, determining that the exhaust pressure regulation condition is met.
By adopting the technical scheme, when the environmental temperature is high and the refrigeration requirement of the indoor unit is high, the condition for adjusting the exhaust pressure is determined to trigger the exhaust pressure to start adjusting the exhaust pressure, so that the compressor is prevented from being frequently protected and stopped, and the running reliability of the compressor is ensured.
Preferably, the adjusting step of the expansion valve of the indoor unit includes: acquiring the actual superheat degree of the indoor unit; when the actual superheat degree is smaller than the target superheat degree, carrying out opening reducing control on the expansion valve; and when the actual superheat degree is larger than the target superheat degree, carrying out opening degree increasing control on the expansion valve.
By adopting the technical scheme, the expansion valve of the indoor unit is adjusted according to the relation between the actual superheat degree and the target superheat degree of the indoor unit, so that the throttling pressure difference of the indoor unit is adjusted, and the exhaust pressure of the compressor is adjusted.
Preferably, when the air conditioner is a multi-connected air conditioner, the adjusting sequence of the expansion valves of the indoor units in each starting-up state is obtained by sequencing the current opening degrees of the expansion valves from small to large, and the adjusting interval duration of two adjacent expansion valves is a preset duration.
By adopting the technical scheme, the adjusting priority and the adjusting time interval are set according to the current opening degree of the expansion valve of the starting indoor unit, so that the opening degree of the expansion valve of each indoor unit is adjusted in sequence, the phenomenon that an air conditioning system is unstable in operation due to simultaneous adjustment is avoided, and the stability of the operation of an air conditioner is improved.
According to an embodiment of the present invention, in another aspect, there is provided a discharge pressure adjusting apparatus of an air conditioner, including: the judging module is used for detecting the outdoor environment temperature and the starting capacity of the indoor unit and judging whether the exhaust pressure adjusting condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit; the determining module is used for determining a target superheat degree of an indoor unit based on the outdoor environment temperature and adjusting an expansion valve of the indoor unit based on the target superheat degree when the exhaust pressure adjusting condition is met; and the correcting module is used for monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature.
According to an embodiment of the present invention, in another aspect, there is provided an air conditioner including a computer readable storage medium storing a computer program and a processor, the computer program being read by the processor and when executed, implementing the method according to any one of the first aspect.
The invention has the following beneficial effects: when the air conditioner needs to adjust the exhaust pressure, a new target superheat degree is automatically calculated based on the outdoor environment temperature so as to adjust the opening degree of an expansion valve corresponding to the indoor unit, the purpose of adjusting the exhaust pressure of the compressor is achieved, frequent high-pressure protection of the compressor is avoided, meanwhile, the target superheat degree is corrected when the exhaust temperature is high so as to adjust the circulation quantity of a refrigerant, the refrigerating capacity of the indoor unit is improved, and the operation reliability and the indoor environment comfort of the air conditioner are improved.
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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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a flow chart of a method for adjusting exhaust pressure of an air conditioner according to the present invention;
FIG. 2 is a schematic structural diagram of an air conditioner according to the present invention;
FIG. 3 is a graph of a target superheat degree versus outdoor ambient temperature according to the present invention;
FIG. 4 is a graph of superheat compensation versus exhaust temperature according to the present invention;
FIG. 5 is a flow chart of an exhaust pressure regulation provided by the present invention;
fig. 6 is a schematic structural view of a discharge pressure regulating device of an air conditioner according to the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, for a multi-connected air conditioning system, an electronic expansion valve installed in an indoor unit is generally adopted as a throttling device in a refrigeration mode, and the opening degree of the electronic expansion valve of the indoor unit is generally adjusted according to the superheat degree of a heat exchanger of the indoor unit. Under a high-temperature environment, the evaporation temperature of the indoor unit is high, the electronic expansion valve is often in a small opening degree in order to adjust the preset superheat degree of the heat exchanger, the exhaust pressure of the compressor is further increased at the moment, and the compressor is easily protected and shut down due to the fact that the exhaust pressure is too high. Especially, for an air conditioning system not equipped with a pressure detection device, control of the discharge pressure is particularly important. In order to solve the above problem, embodiments of the present invention provide an exhaust pressure adjusting method and apparatus for an air conditioner, and an air conditioner.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The present embodiment provides an exhaust pressure adjusting method for an air conditioner, which can be applied to a controller of the air conditioner, referring to a flowchart of the exhaust pressure adjusting method for the air conditioner shown in fig. 1, the method mainly includes the following steps S102 to S106:
step S102: and detecting the outdoor environment temperature and the starting capacity of the indoor unit, and judging whether the exhaust pressure regulation condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit.
The air conditioner may include one or more indoor units, and referring to the schematic structural diagram of the air conditioner shown in fig. 2, the air conditioner includes a compressor 21, an exhaust temperature sensor 22, a four-way reversing valve 23, an outdoor fan 24, an outdoor heat exchanger 25, an outdoor temperature sensor 26, an electronic expansion valve 27, an indoor unit inlet pipe temperature sensor 28, an indoor heat exchanger 29 and an indoor unit outlet pipe temperature sensor 30.
When the air conditioner operates in a refrigeration mode in a high-temperature environment, the current outdoor environment temperature is detected based on the outdoor temperature sensor 26, the starting capacity of an indoor unit of the air conditioner is obtained, the refrigeration requirement of the indoor unit can be indirectly determined according to the outdoor environment temperature and the starting capacity of the indoor unit, when the refrigeration requirement of the indoor unit is large, the efficiency of an outdoor heat exchanger is reduced, the exhaust pressure of a compressor is increased, and the requirement for exhaust pressure regulation is determined to be met, so that the exhaust pressure regulation of the air conditioner is facilitated.
In one possible implementation, whether the outdoor environment temperature is greater than the outer ring temperature threshold value or not and whether the starting capacity of the indoor unit is greater than the preset capacity or not is judged; and when the outdoor environment temperature is greater than the outer ring temperature threshold value and the starting capacity of the indoor unit is greater than the preset capacity, determining that the exhaust pressure regulation condition is met. The value range of the outer ring temperature threshold T1 can be 35-40 ℃, and the value range of the preset capacity can be 40-60 (kw). When the outdoor environment temperature Ta is more than T1 and the starting capacity zeta of the indoor unit is more than N, the environment temperature is judged to be higher and the refrigeration requirement of the indoor unit is larger, the exhaust pressure of the compressor is increased along with the reduction of the efficiency of the outdoor heat exchanger, the exhaust pressure adjusting condition is determined to be met, the exhaust pressure is adjusted, the compressor is prevented from being frequently protected and stopped, and the running reliability of the compressor is ensured.
Step S104: if yes, a target superheat degree of the indoor unit is determined based on the outdoor environment temperature, and an expansion valve of the indoor unit is adjusted based on the target superheat degree.
When the condition that the exhaust pressure is adjusted is determined to be met, indicating that the compressor needs to be adjusted in exhaust pressure, calculating a new target superheat degree of the indoor unit based on the detected outdoor environment temperature, adjusting the opening degree of an expansion valve (namely, an electronic expansion valve) of the indoor unit based on the new target superheat degree, and adjusting the exhaust pressure of the compressor by adjusting the opening degree of the expansion valve of the indoor unit.
In one possible embodiment, the target superheat is inversely related to the outdoor ambient temperature. When the outdoor environment temperature is higher, the target superheat degree is smaller, the opening degree of an expansion valve of the indoor unit is increased, the flow of refrigerant is increased, the exhaust pressure of the compressor is reduced, and the effective regulation of the exhaust pressure is realized.
Step S106: and monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature.
In the process of adjusting the exhaust pressure of the compressor, the exhaust temperature of the compressor is detected in real time based on an exhaust temperature sensor, when the exhaust temperature is detected to be higher than a preset temperature, the exhaust temperature of the compressor at the moment is judged to be higher, and the target superheat degree needs to be corrected appropriately. The exhaust temperature of the compressor can reflect the state of the refrigerant discharged by the compressor, the higher the temperature is, the more sufficient the overheating of the gaseous refrigerant is, and at the moment, the target overheating degree of the indoor unit can be properly reduced to ensure the normal operation of the compressor.
According to the exhaust pressure adjusting method of the air conditioner, when the air conditioner needs to adjust the exhaust pressure, the new target superheat degree is automatically calculated based on the outdoor environment temperature, so that the opening degree of the expansion valve corresponding to the indoor unit is adjusted, the purpose of adjusting the exhaust pressure of the compressor is achieved, frequent high-pressure protection of the compressor is avoided, meanwhile, the target superheat degree is corrected when the exhaust temperature is high, so that the circulation quantity of a refrigerant is adjusted, the refrigerating capacity of the indoor unit is improved, and the operation reliability of the air conditioner and the indoor environment comfort are improved.
In a possible implementation, the present embodiment provides a specific implementation for determining the target superheat degree of the indoor unit based on the outdoor ambient temperature: and acquiring the current preset target superheat degree, and determining the target superheat degree of the indoor unit based on the preset target superheat degree and the outdoor environment temperature. The preset target superheat degree is a target superheat degree set before exhaust pressure regulation, and the value range of the preset target superheat degree can be 2-5 ℃.
The calculation formula of the target superheat degree is as follows:
S＝(S1-S2)/(T1-T2)×Ta+(S2×T1-S1×T2)/(T1-T2)
wherein S is a target superheat degree, S1 is a preset target superheat degree, S2 is a minimum allowable superheat degree (that is, the minimum allowable superheat degree on the premise of ensuring the operation reliability of the air conditioner, such as 0 ℃), Ta is an outdoor ambient temperature, T1 is an outer ring temperature threshold, T2 is a maximum outdoor ambient temperature (typically 60 ℃) at which the air conditioner is allowed to operate, and T2 and S2 may determine preset values thereof through experiments.
Referring to a graph showing the change of the target superheat degree with the outdoor environment temperature as shown in fig. 3, when the outdoor environment temperature is greater than an outer ring temperature threshold value T1, the target superheat degree is reduced in a certain proportion with the increase of the outdoor environment temperature, and when the outdoor environment temperature is T2, the target superheat degree is reduced to the lowest allowable superheat degree.
In one possible implementation, the present embodiment provides a specific implementation of correcting the target superheat based on the exhaust temperature: determining a superheat degree compensation value based on the exhaust temperature, and determining a corrected target superheat degree based on the superheat degree compensation value and the target superheat degree, so that the air conditioner adjusts an expansion valve of the indoor unit based on the corrected target superheat degree; the corrected target superheat degree is equal to a target superheat degree-superheat degree compensation value K, and the superheat degree compensation value is in positive correlation with the exhaust gas temperature.
The corrected target superheat degree is (S1-S2)/(T1-T2) × T + (S2 × T1-S1 × T2/T1-T2-K
The exhaust temperature of the compressor can reflect the state of the refrigerant discharged by the compressor, the higher the exhaust temperature of the compressor is, the more sufficient the overheating of the gaseous refrigerant is, the target overheating degree of the indoor unit can be properly reduced, the higher the exhaust temperature of the compressor is, the larger the overheating degree compensation value is, the smaller the corrected target overheating degree is, and the opening degree of the expansion valve is adjusted based on the corrected target overheating degree, so that the refrigerating capacity of the indoor unit in a high-temperature environment is improved, and the comfort of the indoor environment is improved.
In one possible embodiment, the superheat compensation value K is calculated by the equation:
K＝Kmax×(Td-T3)/(Tmax-T3)
k is a superheat compensation value, Td is an exhaust temperature, T3 is an exhaust temperature threshold, Kmax is a maximum superheat compensation value (the value range is 0-2 ℃) of the indoor unit, Tmax is a maximum exhaust temperature of the compressor, and the Tmax is determined by the characteristics of the compressor and the refrigerant and ranges from 100 ℃ to 130 ℃. T3 is the refrigerant saturation temperature T4+ superheat margin T5 corresponding to the maximum allowable discharge pressure, and taking refrigerant R410a as an example, T4 is preferably 60 to 65 ℃, and T5 is preferably 20 to 30 ℃.
Referring to the graph of the superheat compensation value varying with the discharge temperature as shown in fig. 4, it can be seen from fig. 4 that when the discharge temperature is less than the discharge temperature threshold T3, the superheat compensation value K takes a value of 0, the discharge temperature of the compressor is in a reasonable range, and the target superheat is not corrected. When the exhaust temperature is higher than the exhaust temperature threshold value T3, the exhaust temperature of the compressor is higher, and the superheat compensation value K is increased in a certain proportion along with the increase of the exhaust temperature, so that the target superheat of the indoor unit can be reduced.
In a possible implementation manner, this embodiment further provides an adjustment manner of an expansion valve of the indoor unit, which may be specifically executed with reference to the following steps (1) to (3):
step (1): and acquiring the actual superheat degree of the indoor unit.
When the opening degree of the expansion valve is adjusted based on the target superheat degree or when the opening degree of the expansion valve is adjusted based on the corrected target superheat degree, an inlet pipe temperature Tin and an outlet pipe temperature Tout of the indoor unit are detected, and an actual superheat degree St of the indoor unit is calculated, wherein the actual superheat degree St is Tout-Tin.
Step (2): and when the actual superheat degree is less than the target superheat degree, performing opening reducing control on the expansion valve.
And when the actual superheat St is smaller than the target superheat or the corrected target superheat, controlling the electronic expansion valve of the indoor unit to reduce the opening degree. In one embodiment, the reduction degree control includes: and controlling the electronic expansion valve of the indoor unit to reduce the first preset opening degree, wherein the larger the difference value between the target superheat degree and the actual superheat degree is, the larger the reduced first preset opening degree is. In another embodiment, an expansion valve of an indoor unit is controlled to decrease a second preset opening degree, which is smaller than the first preset opening degree, at intervals of a certain time.
And (3): and when the actual superheat degree is larger than the target superheat degree, carrying out opening degree increasing control on the expansion valve.
And when the actual superheat St is larger than the target superheat or the corrected target superheat, controlling the electronic expansion valve of the indoor unit to increase the opening degree. In one embodiment, the increase degree control includes: and controlling the electronic expansion valve of the indoor unit to increase the second preset opening degree, wherein the larger the difference value between the actual superheat degree and the target superheat degree is, the larger the increased third preset opening degree is. In another embodiment, an expansion valve of an indoor unit is controlled to increase a fourth preset opening degree, which is smaller than the third preset opening degree, at intervals of a certain time.
The expansion valve of the indoor unit is adjusted according to the relation between the actual superheat degree and the target superheat degree of the indoor unit, so that the throttling pressure difference of the indoor unit is adjusted, and the exhaust pressure of the compressor is adjusted.
In a feasible implementation mode, when the air conditioner is a multi-connected air conditioner, the adjusting sequence of the expansion valves of each indoor unit is obtained by sequencing the current opening degree of the expansion valves from small to large, the adjusting interval time of two adjacent expansion valves is a preset time, and the value range of the preset time can be 0.5-10 min.
When the air conditioner is a multi-connected air conditioner, in order to avoid unstable operation caused by sudden change of refrigerant flow when the expansion valves of all indoor units are adjusted at the same time, the expansion valves of the indoor units are set with adjustment priorities, the current opening degrees of the expansion valves of all the indoor units in a starting state are detected, the adjustment priority of the indoor unit with the minimum current opening degree is the highest, the adjustment priority of the indoor unit with the maximum current opening degree is the lowest, the expansion valve of the indoor unit with the maximum adjustment priority is preferentially adjusted based on the actual superheat degree, the target superheat degree or the corrected target superheat degree, and after a preset time interval, the opening degrees of the expansion valves of the indoor units are sequentially adjusted according to the sequence of the adjustment priorities from large to small.
An upper regulation limit (for example 200-300 pls) is set for the opening of the electronic expansion valve of the indoor unit, so that a certain throttling pressure difference is ensured, and meanwhile, the phenomenon that the normal operation of the compressor is influenced by the liquid return of the refrigerant is avoided.
The adjusting priority and the adjusting time interval are set according to the current opening degree of the expansion valve of the indoor unit, so that the opening degree of the expansion valve of each indoor unit is adjusted in sequence, unstable operation of an air conditioning system caused by simultaneous adjustment is avoided, and the stability of the operation of an air conditioner is improved.
According to the exhaust pressure adjusting method of the air conditioner, the target superheat degree of each indoor unit heat exchanger is automatically calculated according to the outdoor environment temperature and the starting capacity of the indoor unit, and the throttle pressure difference is controlled by adjusting the opening degree of the electronic expansion valve, so that the aim of adjusting the exhaust pressure of the compressor is fulfilled; the target superheat degree of the indoor unit is corrected by detecting the exhaust temperature of the compressor, the refrigerant circulation quantity is automatically adjusted, the refrigerating capacity of the indoor unit is improved, and both reliability and use comfort are taken into consideration; the method has the advantages that the adjustment priority and the adjustment interval are automatically set according to the actual opening degree of the electronic expansion valve of the indoor unit, the operation stability of the air conditioning system in a high-temperature environment is guaranteed, meanwhile, the method is suitable for the air conditioner without a high-pressure detection device, other hardware is not required to be additionally installed, the material cost is saved, and the universality is high.
Corresponding to the method for adjusting the exhaust pressure of the air conditioner provided by the above embodiment, the embodiment of the present invention provides an example of adjusting the exhaust pressure of the air conditioner compressor at a high temperature by using the method for adjusting the exhaust pressure of the air conditioner, which can be specifically executed by referring to the following steps 1 to 5:
step 1, when the air conditioner runs, respectively detecting an ambient temperature Ta, a compressor exhaust temperature Td and the starting capacity of the indoor unit, automatically judging whether an exhaust pressure regulation condition is met or not according to the outdoor ambient temperature, the compressor exhaust temperature and the starting capacity of the indoor unit, if not, executing step 2, and if so, executing step 3.
The higher the ambient temperature is, the greater the refrigeration demand of the indoor unit is, the higher the output frequency of the compressor is, and the higher the ambient temperature is, the lower the heat exchange efficiency of the outdoor heat exchanger is, which may cause the exhaust pressure of the compressor to be higher, see the exhaust pressure regulation flow chart shown in fig. 5, and determine whether the exhaust pressure regulation condition is satisfied according to the detected outdoor ambient temperature, the compressor exhaust temperature and the indoor unit startup capacity.
And 2, reading a preset target superheat degree, and carrying out normal adjustment based on the preset target superheat degree.
And when the outdoor environment temperature Ta is less than or equal to T1 (preferably 35-40 ℃), judging that the outdoor environment temperature is lower at the moment, normally adjusting the air conditioner, controlling an expansion valve of an indoor unit according to a preset target superheat degree S1 (preferably 2-5 ℃), controlling the exhaust pressure of a compressor within a reasonable range generally, and not triggering high-pressure protection.
When the starting capacity zeta of the indoor unit is less than or equal to N, the refrigerating requirement of the indoor unit is smaller at the moment, the heat exchanger of the outdoor unit can meet the heat exchange requirement, the expansion valve of the indoor unit is normally controlled according to the preset target superheat degree S1, the exhaust pressure of the compressor is usually in a reasonable range, and high-pressure protection cannot be triggered.
When the exhaust temperature Td of the compressor is detected to be less than or equal to T3, the exhaust temperature of the compressor at the moment is judged to be in a reasonable range, the target superheat degree is not corrected, and the value K is 0; wherein T3 is the refrigerant saturation temperature T4+ the superheat margin T5 corresponding to the maximum allowable discharge pressure, and taking the refrigerant R410a as an example, T4 is preferably 60 to 65 ℃, and T5 is preferably 20 to 30 ℃.
And 3, calculating the target superheat degree of the indoor unit when the outdoor environment temperature Ta is more than T1 and the starting capacity zeta of the indoor unit is more than N (preferably 40-60).
When the outdoor ambient temperature Ta is greater than T1 and the starting capacity ζ of the indoor unit is greater than N (preferably 40-60), determining that the ambient temperature is higher and the refrigeration requirement of the indoor unit is larger at the moment, wherein the discharge pressure of the compressor is increased along with the reduction of the efficiency of the outdoor heat exchanger, and the throttle valve of the indoor unit (capable of requiring) is adjusted according to a target superheat degree S, and the target superheat degree S is calculated as follows:
S＝(S1-S2)/(T1-T2)×T+(S2×T1-S1×T2)/(T1-T2)-K
t2 is the maximum outdoor ambient temperature at which the air conditioner is allowed to operate, T2 > T1, for example, T2 ═ 60 ℃.
S2 is the lowest permissible superheat degree on the premise of ensuring the operational reliability of the air conditioner, S2 < S1, for example, S2 is 0 ℃.
The preset values of T2 and S2 can be determined by experiment.
K is the superheat compensation value of the indoor unit, and is calculated according to the exhaust temperature Td, and when the exhaust temperature Td is less than or equal to T3, K is equal to 0.
And 4, detecting the exhaust temperature of the compressor, and automatically correcting the target superheat degree based on the exhaust temperature of the compressor.
When the discharge temperature Td of the compressor is detected to be more than T3, the discharge temperature of the compressor is judged to be higher at the moment, the superheat degree is properly corrected, because the discharge temperature of the compressor can reflect the state of the refrigerant discharged by the compressor, the higher the temperature is, the superheat degree of the gaseous refrigerant is more sufficient, and the superheat degree of the indoor unit can be properly reduced at the moment, and even a small amount of liquid refrigerant is allowed to return to the compressor without influencing the normal operation of the compressor.
The superheat compensation value K is calculated from the exhaust temperature as follows:
K＝Kmax×(Td-T3)/(Tmax-T3)，
kmax is the maximum compensation value of the superheat degree of the indoor unit, and is preferably 0-2 ℃.
Tmax is the maximum allowable discharge temperature of the compressor, and is determined by the characteristics of the compressor and the refrigerant, and is preferably 100-130 ℃.
And 5, calculating the actual superheat degree of the starting indoor unit, setting the adjusting priority of the expansion valve based on the actual superheat degree of the starting indoor unit, and sequentially adjusting the expansion valve of the starting indoor unit according to the sequence of the priority from high to low.
And when St is greater than the target value S, the electronic expansion valve of the indoor unit is controlled to increase the opening degree, and the throttling pressure difference of the indoor unit is sequentially adjusted so as to adjust the exhaust pressure of the compressor.
Respectively carrying out independent opening degree adjustment on the expansion valve of each starting indoor unit based on the calculated target superheat degree, setting the priority of the expansion valve adjustment of the indoor units, detecting the current opening degree of the expansion valves of all the starting indoor units to avoid unstable system operation caused by sudden change of refrigerant flow due to simultaneous adjustment of the expansion valves of a plurality of indoor units, wherein the priority of the indoor unit with the minimum current opening degree is high, the indoor unit with the minimum current opening degree is preferentially adjusted, and after N adjustment periods t0 are arranged, the expansion valves of the other indoor units are sequentially adjusted, wherein N is preferably 1-5, and t0 is preferably 0.5-2 min; an upper regulation limit (for example 200-300 pls) is set for the opening of the electronic expansion valve of the indoor unit, so that a certain throttling pressure difference is ensured, and meanwhile, the phenomenon that the normal operation of the compressor is influenced by the liquid return of the refrigerant is avoided.
Corresponding to the method for adjusting the exhaust pressure of the air conditioner provided by the above embodiment, the embodiment of the invention provides an exhaust pressure adjusting device of the air conditioner, which can be applied to the air conditioner, referring to the schematic structural diagram of the exhaust pressure adjusting device of the air conditioner shown in fig. 6, and the device comprises the following modules:
and the judging module 61 is used for detecting the outdoor environment temperature and the starting capacity of the indoor unit and judging whether the exhaust pressure regulation condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit.
And the determining module 62 is used for determining the target superheat degree of the indoor unit based on the outdoor environment temperature and adjusting the expansion valve of the indoor unit based on the target superheat degree when the exhaust pressure adjusting condition is met.
And the correcting module 63 is used for monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than the preset temperature.
According to the exhaust pressure adjusting device of the air conditioner, when the air conditioner needs to adjust the exhaust pressure, the new target superheat degree is automatically calculated based on the outdoor environment temperature, so that the opening degree of the expansion valve corresponding to the indoor unit is adjusted, the purpose of adjusting the exhaust pressure of the compressor is achieved, frequent high-pressure protection of the compressor is avoided, meanwhile, the target superheat degree is corrected when the exhaust temperature is high, the circulation quantity of a refrigerant is adjusted, the refrigerating capacity of the indoor unit is improved, and the operation reliability of the air conditioner and the indoor environment comfort are improved.
In one embodiment, the target superheat is inversely related to the outdoor ambient temperature.
In an embodiment, the determining module 62 is further configured to obtain a current preset target superheat degree, and determine a target superheat degree of the indoor unit based on the preset target superheat degree and the outdoor environment temperature; the calculation formula of the target superheat degree is as follows:
S＝(S1-S2)/(T1-T2)×Ta+(S2×T1-S1×T2)/(T1-T2)
wherein S is a target superheat degree, S1 is a preset target superheat degree, S2 is a lowest allowable superheat degree, Ta is an outdoor environment temperature, T1 is an outer ring temperature threshold value, and T2 is a maximum outdoor environment temperature of the air conditioner allowed to operate.
In an embodiment, the correcting module 63 is further configured to determine a superheat compensation value based on the exhaust temperature, and determine a corrected target superheat based on the superheat compensation value and the target superheat, so that the air conditioner adjusts an expansion valve of the indoor unit based on the corrected target superheat; the corrected target superheat degree is equal to a target superheat degree-superheat degree compensation value, and the superheat degree compensation value is in positive correlation with the exhaust gas temperature.
In one embodiment, the calculation formula of the superheat compensation value is:
K＝Kmax×(Td-T3)/(Tmax-T3)
k is a superheat compensation value, Td is an exhaust temperature, T3 is an exhaust temperature threshold value, Kmax is a superheat maximum compensation value, and Tmax is a compressor maximum exhaust temperature.
In an embodiment, the determining module 61 is further configured to determine whether the outdoor environment temperature is greater than the outer ring temperature threshold, and whether the indoor unit startup capacity is greater than a preset capacity; and when the outdoor environment temperature is greater than the outer ring temperature threshold value and the starting capacity of the indoor unit is greater than the preset capacity, determining that the exhaust pressure regulation condition is met.
In one embodiment, the above apparatus further comprises:
the control module is used for acquiring the actual superheat degree of the indoor unit; when the actual superheat degree is smaller than the target superheat degree, the opening reducing degree of the expansion valve is controlled; and when the actual superheat degree is larger than the target superheat degree, carrying out opening degree increasing control on the expansion valve.
In an embodiment, when the air conditioner is a multi-connected air conditioner, the adjustment sequence of the expansion valves of the indoor units in each on state is obtained by sequencing the current opening degrees of the expansion valves from small to large, and the adjustment interval duration of two adjacent expansion valves is a preset duration.
The exhaust pressure adjusting device of the air conditioner provided by the embodiment automatically calculates the target superheat degree of each indoor unit heat exchanger according to the outdoor environment temperature and the starting capacity of the indoor unit, and controls the throttling pressure difference by adjusting the opening degree of the electronic expansion valve, so that the aim of adjusting the exhaust pressure of the compressor is fulfilled; the target superheat degree of the indoor unit is corrected by detecting the exhaust temperature of the compressor, the refrigerant circulation quantity is automatically adjusted, the refrigerating capacity of the indoor unit is improved, and both reliability and use comfort are taken into consideration; the method has the advantages that the adjustment priority and the adjustment interval are automatically set according to the actual opening degree of the electronic expansion valve of the indoor unit, the operation stability of the air conditioning system in a high-temperature environment is guaranteed, meanwhile, the method is suitable for the air conditioner without a high-pressure detection device, other hardware is not required to be additionally installed, the material cost is saved, and the universality is high.
Corresponding to the method for adjusting the exhaust pressure of the air conditioner provided by the above embodiment, the present embodiment provides an air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for adjusting the exhaust pressure of the air conditioner provided by the above embodiment is implemented.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned embodiment of the method for adjusting exhaust pressure of an air conditioner, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The exhaust pressure adjusting device of the air conditioner and the air conditioner disclosed by the embodiment correspond to the exhaust pressure adjusting method of the air conditioner disclosed by the embodiment, so that the description is relatively simple, and relevant points can be referred to the description of the method part.
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 these 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.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A discharge pressure adjusting method of an air conditioner, comprising:
detecting the outdoor environment temperature and the starting capacity of an indoor unit, and judging whether an exhaust pressure regulation condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit;
if yes, determining a target superheat degree of an indoor unit based on the outdoor environment temperature, and adjusting an expansion valve of the indoor unit based on the target superheat degree;
and monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature.
2. A discharge pressure adjusting method of an air conditioner according to claim 1, wherein said target degree of superheat is inversely related to said outdoor ambient temperature.
3. The discharge pressure adjusting method of an air conditioner as claimed in claim 1, wherein the step of determining a target degree of superheat of the indoor unit based on the outdoor ambient temperature comprises:
acquiring a current preset target superheat degree, and determining the target superheat degree of the indoor unit based on the preset target superheat degree and the outdoor environment temperature; the calculation formula of the target superheat degree is as follows:
S＝(S1-S2)/(T1-T2)×Ta+(S2×T1-S1×T2)/(T1-T2)
wherein S is the target superheat degree, S1 is the preset target superheat degree, S2 is the lowest allowable superheat degree, Ta is the outdoor environment temperature, T1 is an outer ring temperature threshold value, and T2 is the maximum outdoor environment temperature of the air conditioner allowed to operate.
4. The discharge pressure adjusting method of an air conditioner according to claim 1, wherein said step of correcting said target degree of superheat based on said discharge temperature comprises:
determining a superheat degree compensation value based on the exhaust temperature, and determining a corrected target superheat degree based on the superheat degree compensation value and the target superheat degree so that an air conditioner adjusts an expansion valve of the indoor unit based on the corrected target superheat degree; wherein the corrected target superheat degree is a target superheat degree-superheat degree compensation value, and the superheat degree compensation value is in positive correlation with the exhaust gas temperature.
5. The discharge pressure adjusting method of an air conditioner according to claim 4, wherein the superheat compensation value is calculated by the equation:
K＝Kmax×(Td-T3)/(Tmax-T3)
k is the superheat degree compensation value, Td is the exhaust temperature, T3 is an exhaust temperature threshold value, Kmax is a superheat degree maximum compensation value, and Tmax is a compressor maximum exhaust temperature.
6. The discharge pressure regulating method of an air conditioner as claimed in claim 1, wherein said step of determining whether a discharge pressure regulating condition is satisfied based on the outdoor ambient temperature and the indoor unit turn-on capacity includes:
judging whether the outdoor environment temperature is greater than an outer ring temperature threshold value or not, and whether the starting capacity of the indoor unit is greater than a preset capacity or not;
and when the outdoor environment temperature is greater than the outer ring temperature threshold value and the starting capacity of the indoor unit is greater than the preset capacity, determining that the exhaust pressure regulation condition is met.
7. The discharge pressure adjusting method of an air conditioner according to any one of claims 1 to 6, wherein the adjusting step of the expansion valve of the indoor unit includes:
acquiring the actual superheat degree of the indoor unit;
when the actual superheat degree is smaller than the target superheat degree, carrying out opening reducing control on the expansion valve;
and when the actual superheat degree is larger than the target superheat degree, carrying out opening degree increasing control on the expansion valve.
8. The exhaust pressure regulating method of an air conditioner according to claim 7, wherein when the air conditioner is a multi-split air conditioner, the regulating sequence of the expansion valves of the indoor units in each on-state is obtained by sorting the current opening degrees of the expansion valves from small to large, and the regulating interval duration of two adjacent expansion valves is a preset duration.
9. An exhaust pressure adjusting apparatus of an air conditioner, comprising:
the judging module is used for detecting the outdoor environment temperature and the starting capacity of the indoor unit and judging whether the exhaust pressure adjusting condition is met or not based on the outdoor environment temperature and the starting capacity of the indoor unit;
the determining module is used for determining a target superheat degree of an indoor unit based on the outdoor environment temperature and adjusting an expansion valve of the indoor unit based on the target superheat degree when the exhaust pressure adjusting condition is met;
and the correcting module is used for monitoring the exhaust temperature of the compressor, and correcting the target superheat degree based on the exhaust temperature when the exhaust temperature is greater than a preset temperature.
10. An air conditioner 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 method according to any one of claims 1 to 8.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115247858A (en) * | 2022-05-16 | 2022-10-28 | 美的集团武汉暖通设备有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN115711472A (en) * | 2022-11-28 | 2023-02-24 | 珠海格力电器股份有限公司 | Air conditioner control method and control device, air conditioner system and storage medium |
| CN115789908A (en) * | 2022-11-15 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Expansion valve opening degree control method and device of air conditioner and multi-connected air conditioner |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040107715A1 (en) * | 2002-11-22 | 2004-06-10 | Lg Electronics Inc. | Air conditioner and method for controlling electronic expansion valve of air conditioner |
| EP3098531A1 (en) * | 2014-01-21 | 2016-11-30 | Mitsubishi Electric Corporation | Air conditioner |
| CN109990517A (en) * | 2019-04-15 | 2019-07-09 | 宁波工程学院 | Air conditioner intelligence quickly defrosting and protection control method |
| CN110332682A (en) * | 2019-07-25 | 2019-10-15 | 宁波奥克斯电气股份有限公司 | The method, apparatus and air conditioner adjusted to the working frequency of compressor |
| CN110440420A (en) * | 2019-07-31 | 2019-11-12 | 广东志高暖通设备股份有限公司 | A kind of control method of the electric expansion valve of module water dispenser |
| CN110579046A (en) * | 2019-09-27 | 2019-12-17 | 海信（山东）空调有限公司 | Control method and device for electronic expansion valve in multi-split refrigeration operation |
| CN110762729A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Method for controlling air conditioner and air conditioner |
| CN110848903A (en) * | 2019-11-20 | 2020-02-28 | 宁波奥克斯电气股份有限公司 | Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium |
| CN111023270A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and device of electronic expansion valve, air conditioner and storage medium |
| CN111121242A (en) * | 2019-12-26 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Adjusting method and device for operating parameters of air conditioning system and air conditioning system |
| CN111928410A (en) * | 2020-06-30 | 2020-11-13 | 青岛海尔空调电子有限公司 | Control method for multi-split air conditioning unit |
| CN112443883A (en) * | 2019-08-28 | 2021-03-05 | 青岛海尔新能源电器有限公司 | Electronic expansion valve control method and device and heat pump unit |
| CN113375319A (en) * | 2020-02-25 | 2021-09-10 | 青岛海尔空调电子有限公司 | Control method of fixed-frequency air conditioner in refrigeration state |
-
2021
- 2021-12-17 CN CN202111555840.0A patent/CN114322249A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040107715A1 (en) * | 2002-11-22 | 2004-06-10 | Lg Electronics Inc. | Air conditioner and method for controlling electronic expansion valve of air conditioner |
| EP3098531A1 (en) * | 2014-01-21 | 2016-11-30 | Mitsubishi Electric Corporation | Air conditioner |
| CN109990517A (en) * | 2019-04-15 | 2019-07-09 | 宁波工程学院 | Air conditioner intelligence quickly defrosting and protection control method |
| CN110332682A (en) * | 2019-07-25 | 2019-10-15 | 宁波奥克斯电气股份有限公司 | The method, apparatus and air conditioner adjusted to the working frequency of compressor |
| CN110440420A (en) * | 2019-07-31 | 2019-11-12 | 广东志高暖通设备股份有限公司 | A kind of control method of the electric expansion valve of module water dispenser |
| CN112443883A (en) * | 2019-08-28 | 2021-03-05 | 青岛海尔新能源电器有限公司 | Electronic expansion valve control method and device and heat pump unit |
| CN110762729A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Method for controlling air conditioner and air conditioner |
| CN110579046A (en) * | 2019-09-27 | 2019-12-17 | 海信（山东）空调有限公司 | Control method and device for electronic expansion valve in multi-split refrigeration operation |
| CN110848903A (en) * | 2019-11-20 | 2020-02-28 | 宁波奥克斯电气股份有限公司 | Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium |
| CN111121242A (en) * | 2019-12-26 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Adjusting method and device for operating parameters of air conditioning system and air conditioning system |
| CN111023270A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and device of electronic expansion valve, air conditioner and storage medium |
| CN113375319A (en) * | 2020-02-25 | 2021-09-10 | 青岛海尔空调电子有限公司 | Control method of fixed-frequency air conditioner in refrigeration state |
| CN111928410A (en) * | 2020-06-30 | 2020-11-13 | 青岛海尔空调电子有限公司 | Control method for multi-split air conditioning unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115247858A (en) * | 2022-05-16 | 2022-10-28 | 美的集团武汉暖通设备有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN115247858B (en) * | 2022-05-16 | 2024-04-26 | 美的集团武汉暖通设备有限公司 | Air conditioner, control method thereof and computer readable storage medium |
| CN115789908A (en) * | 2022-11-15 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Expansion valve opening degree control method and device of air conditioner and multi-connected air conditioner |
| CN115711472A (en) * | 2022-11-28 | 2023-02-24 | 珠海格力电器股份有限公司 | Air conditioner control method and control device, air conditioner system and storage medium |
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Effective date of registration: 20221020 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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Application publication date: 20220412 |