CN112665242B - Air conditioner defrosting control method, device and system - Google Patents
Air conditioner defrosting control method, device and system Download PDFInfo
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- CN112665242B CN112665242B CN202011434863.1A CN202011434863A CN112665242B CN 112665242 B CN112665242 B CN 112665242B CN 202011434863 A CN202011434863 A CN 202011434863A CN 112665242 B CN112665242 B CN 112665242B
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- 238000010257 thawing Methods 0.000 title claims abstract description 188
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004378 air conditioning Methods 0.000 claims description 11
- 238000009395 breeding Methods 0.000 abstract description 8
- 230000001488 breeding effect Effects 0.000 abstract description 8
- 239000003570 air Substances 0.000 description 72
- 229910002092 carbon dioxide Inorganic materials 0.000 description 29
- 238000007664 blowing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001076939 Artines Species 0.000 description 1
- 206010003497 Asphyxia Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application relates to an air conditioner defrosting control method,The air conditioner defrosting control method comprises the steps of obtaining the running state of a unit and judging whether the running state meets a preset defrosting condition; when the defrosting condition is met, judging CO2Whether the concentration is less than a preset target value, if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve; if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number. According to the air conditioner defrosting method and device, indoor fresh air volume and CO can be guaranteed while defrosting is carried out on the air conditioner2The concentration and the indoor temperature are stable, and the device is suitable for the use in the breeding industry.
Description
Technical Field
The application relates to the technical field of intelligent control of air conditioners, in particular to a defrosting control method, device and system for an air conditioner.
Background
Air conditioners (Air conditioners) are Air conditioners. The device is used for manually regulating and controlling parameters such as temperature, humidity, flow rate and the like of ambient air in a building or a structure.
In the related art, more and more air conditioning units are used in the breeding industry, and the requirement of the breeding process on air conditioning is different from that of the breeding process in a common room. For the cultivation industry, the indoor temperature and fresh air volume can be maintained at required values in the required period for cultivating animals and plants, especially young organisms, and the temperature is too low to cause the death of the organisms, so the requirement on a unit is higher. For a fresh air direct expansion unit, defrosting can be performed during heating operation in winter, the conventional method adopts a mode of closing a fan to perform defrosting, but the mode cannot meet the fresh air quantity requirement, so that CO in a culture room is caused2The concentration increases dramatically. And if the fan is not closed to defrost, the cold air blowing phenomenon can occur. So that the fresh air quantity and CO can not be ensured simultaneously when the air conditioner is defrosted2The requirements of concentration and indoor temperature influence the environment in the breeding room.
Disclosure of Invention
In view of the above, the present invention is directed to overcoming the deficiencies of the prior art, and provides a method, a device and a system for controlling defrosting of an air conditioner to solve the problems of the prior artIn the prior art, fresh air quantity and CO can not be ensured simultaneously when the air conditioner defrosts2Concentration and room temperature.
In order to realize the purpose, the invention adopts the following technical scheme: an air conditioner defrosting control method comprises the following steps:
acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
judging CO when the defrosting condition is met2Whether the concentration is less than a preset target value;
if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
Further, the judging whether the operation state meets a preset defrosting condition includes:
acquiring the temperature of a heat exchange tube, and judging whether the temperature of the heat exchange tube is less than or equal to a preset defrosting temperature or not;
if yes, determining that the unit meets a preset defrosting condition;
otherwise, determining that the unit does not meet the preset defrosting condition.
Further, the judging CO2Whether the concentration is less than a preset target value includes:
by CO2Sensor for collecting indoor CO2Concentration;
judging the CO2Whether the concentration is less than a preset target value.
Further, the performing corresponding operations according to the number includes:
when the number of compressors of the unit capable of defrosting is zero, starting a new compressor;
when the number of the unit compressors capable of executing defrosting is larger than zero and the number of the unit compressors capable of executing defrosting is smaller than or equal to half of the total number of the started unit compressors, judging whether the indoor environment temperature is smaller than a preset target temperature;
if yes, increasing the frequency of the compressor of the unit which does not execute defrosting, judging whether defrosting is finished, continuously judging whether the indoor environment temperature is lower than a preset target temperature when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
otherwise, continuing defrosting until defrosting is finished.
Further, still include:
and if the preset defrosting condition is not met, the unit continues to operate.
Further, a temperature sensor is adopted to collect the indoor environment temperature, and the range of the preset target temperature is 19-35 ℃.
The embodiment of the application provides an air conditioner defrosting control device, includes:
the acquisition module is used for acquiring the running state of the unit and judging whether the running state meets the preset defrosting condition;
a judging module for judging CO when the defrosting condition is satisfied2Whether the concentration is less than a preset target value;
a first execution module for if CO2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
a second execution module for if CO2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
The embodiment of the application provides an air conditioning system, including the air conditioner defrosting control device and the air conditioning unit that above-mentioned embodiment provided.
The application provides an air conditioner defrosting control system includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
when the defrosting condition is met, judging CO2Whether the concentration is less than a preset target value;
if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the air conditioner defrosting control method comprises the steps of obtaining the running state of a unit, and judging whether the running state meets a preset defrosting condition; judging CO when the defrosting condition is met2Whether the concentration is less than a preset target value; if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve; if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number. According to the air conditioner defrosting method and device, indoor fresh air volume and CO can be guaranteed while defrosting is carried out on the air conditioner2The concentration and the indoor temperature are stable, and the device is suitable for the use in the breeding industry.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating the steps of the defrosting control method of the air conditioner according to the present invention;
FIG. 2 is a schematic flow chart of a defrosting control method for an air conditioner according to the present invention;
fig. 3 is a schematic structural diagram of an air conditioner defrosting control device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The following describes a specific air conditioner defrosting control method, device and system provided in the embodiments of the present application with reference to the accompanying drawings.
As shown in fig. 1, the air conditioner defrosting control method provided in the embodiment of the present application includes:
s101, acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
the air conditioning unit is in a heating mode, obtains an operation state in the heating mode, and compares the operation state with a preset defrosting condition. The preset defrosting condition may be a frosting degree of the air conditioner outdoor unit, for example, a frosting starting temperature of the air conditioner outdoor unit, and it can be understood that the running states of different air conditioners correspond to different frosting degrees of the air conditioner outdoor unit, and the preset defrosting condition may be set correspondingly according to an actual situation.
S102, judging CO when the defrosting condition is met2Whether the concentration is less than a preset target value;
when the running state of the unit is judged to meet the defrosting condition, CO is judged again2Whether the concentration is less than a preset target value. In this application CO is used2Real-time indoor CO acquisition by sensor2Concentration values.
S103, if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
s104, if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
According to CO2And performing corresponding operation according to the judgment result of the concentration. Wherein the judgment result comprises CO2Concentration less than a preset target value and CO2The concentration is greater than or equal to a preset target value. If CO is present2And (4) calculating the number of the unit compressors capable of executing defrosting when the concentration is more than or equal to the concentration, and executing corresponding operation according to the number.
Specifically, as shown in FIG. 2, when the judgment result is CO2If the concentration is less than the preset target value, reducing the frequency of the fan, opening the fresh air valve, and circularly judging until the concentration is less than the preset target value2The concentration no longer satisfies less than the preset target value. Through the operation of above-mentioned reduction fan frequency, closing the fresh air valve opening degree, air supply volume when can reducing the frost guarantees carbon dioxide concentration simultaneously. The air volume can be ensured to be required, and the suffocation can be prevented. When the judgment result is CO2And when the concentration is greater than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number. The number of the compressor of the unit is different, and the operation mode is different.
It should be noted that the number of the unit compressors capable of defrosting is less than or equal to half of the total number of the started unit compressors; and the number of the unit compressors capable of defrosting is an integer. For example: when the total number of the compressors of the unit which is started is 11, the number of the compressors of the unit which can perform defrosting is 6 at most.
The air conditioner defrosting control method provided by the application further comprises the following steps: and if the preset defrosting condition is not met, the unit continues to operate.
The working principle of the air conditioner defrosting control method provided by the application is as follows: referring to fig. 2, the operation state of the air conditioning unit is obtained, the operation state is compared with a preset defrosting condition, and if the operation state meets the defrosting condition, CO is determined2Whether the concentration is less than a preset target value, if CO2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve; if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number. The air conditioner can ensure indoor fresh air volume while defrosting the air conditioner、CO2The concentration and the indoor temperature are stable, and the use requirement of the breeding industry is met.
In some embodiments, the determining whether the operating state meets a preset defrosting condition includes:
acquiring the temperature of a heat exchange tube, and judging whether the temperature of the heat exchange tube is less than or equal to a preset defrosting temperature or not;
if yes, determining that the unit meets a preset defrosting condition;
otherwise, determining that the unit does not meet the preset defrosting condition.
Specifically, through the temperature of gathering the heat exchange tube in this application, compare the temperature of heat exchange tube with predetermineeing the white temperature, if the temperature of heat exchange tube less than or equal to predetermine the white temperature of changing, then think that the unit satisfies predetermineeing the white condition, get into CO on next step and predetermine the white condition, get into2Judging the concentration; and if the temperature of the heat exchange pipe is greater than the preset defrosting temperature, the unit is determined not to meet the preset defrosting condition, and the defrosting procedure is exited.
Preferably, said determining CO2Whether the concentration is less than a preset target value includes:
by CO2Sensor for collecting indoor CO2Concentration;
judging the CO2Whether the concentration is less than a preset target value.
In this application, CO is used2Sensor for collecting CO2Concentration of CO and then2Comparing the concentration with a preset target value; the preset target value is preset according to an actual situation, and may be a value range, which is not limited herein.
In some embodiments, said performing the corresponding operation according to the number includes:
when the number of compressors of the unit capable of defrosting is zero, starting a new compressor;
when the number of the unit compressors capable of executing defrosting is larger than zero and the number of the unit compressors capable of executing defrosting is less than or equal to half of the total number of the started unit compressors, judging whether the indoor environment temperature is less than a preset target temperature;
if yes, increasing the frequency of the compressor of the unit which does not execute defrosting, judging whether defrosting is finished, continuously judging whether the indoor environment temperature is lower than a preset target temperature when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
otherwise, continuing defrosting until defrosting is finished.
Specifically, CO is used in this application2When the concentration is greater than or equal to the preset target value, the number of the unit compressors capable of executing defrosting is calculated, if the number of the unit compressors capable of executing defrosting is zero, the other compressor is started, the previous step of judgment is carried out again, so that the load is reduced, and the overshoot of the refrigerating capacity caused by large load is avoided. And if the number of the compressors of the unit capable of executing defrosting is not zero, entering a defrosting program, judging whether the indoor environment temperature is lower than a preset target temperature or not after entering the defrosting program, if not, continuing to execute defrosting until defrosting is completed, if not, increasing the frequency of the compressors which do not execute defrosting, after increasing the frequency of the compressors, continuing to judge whether defrosting is completed or not, and if defrosting is not completed, continuing to judge the indoor environment temperature and the target temperature. And if the defrosting exiting condition is met, the defrosting is exited. The defrosting can be effectively controlled to be the indoor temperature through the regulation, cold air blowing is prevented, and the indoor temperature of the cultivation is guaranteed.
Preferably, this application adopts temperature sensor to gather indoor ambient temperature, the scope of predetermineeing the target temperature is 19~35 ℃. Wherein the preset target temperature can be set according to the actual needs of the farm.
CO in this application2The concentration is used as the primary control target of cultivation and can not exceed the set target value. When defrosting, if CO is present2The concentration is less than the actual value, and the fresh air volume can be reduced by closing the opening of the fresh air valve or reducing the frequency of the air feeder so as to reduce the air cooling volume. In addition, the amount of defrosting entering the compressor and the running frequency are controlled to control the air supply temperature, so that cold air blowing is prevented. If the purpose can not be achieved, the electric heating is started to control the temperature. Thereby solving the problem of defrosting and blowing cold air, and ensuring the temperature, fresh air quantity and CO of the cultured organisms in the growth period2The concentration is within the desired range.
As shown in fig. 3, an embodiment of the present application provides an air conditioner defrosting control device, including:
the acquiring module 301 is configured to acquire an operating state of a unit and determine whether the operating state meets a preset defrosting condition;
a judging module 302 for judging CO when the defrosting condition is satisfied2Whether the concentration is less than a preset target value;
a first execution module 303 for CO2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
a second execution module 304 for the CO2And when the concentration is greater than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
The working principle of the air conditioner defrosting control device provided by the application is that the acquisition module 301 acquires the running state of a unit and judges whether the running state meets a preset defrosting condition; the determining module 302 determines CO when the defrosting condition is satisfied2Whether the concentration is less than a preset target value; the first execution module 303 is according to CO2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve; the second execution module 303 is according to CO2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
Preferably, the air conditioner defrosting control device provided by the present application further includes:
and the operation module is used for continuously operating the unit when the preset defrosting condition is not met.
Preferably, the obtaining module 301 includes:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the temperature of a heat exchange tube and judging whether the temperature of the heat exchange tube is less than or equal to a preset defrosting temperature or not;
the first determining unit is used for determining that the unit meets a preset defrosting condition when the temperature of the heat exchange pipe is less than or equal to a preset defrosting temperature;
and the second determining unit is used for determining that the unit does not meet the preset defrosting condition when the temperature of the heat exchange pipe is greater than the preset defrosting temperature.
Preferably, the determining module 302 includes:
a collection unit for passing CO2Sensor for collecting CO2Concentration;
a judging unit for judging the CO2Whether the concentration is less than a preset target value.
Preferably, the second execution module includes:
the first execution unit is used for starting a new compressor when the number of the compressors of the unit capable of defrosting is zero;
the second execution unit is used for judging whether the indoor environment temperature is lower than a preset target temperature or not when the number of the unit compressors capable of defrosting is larger than zero;
the third execution unit is used for increasing the frequency of the unit compressor which does not execute defrosting and judging whether defrosting is finished or not when the indoor environment temperature is lower than the preset target temperature, continuously judging whether the indoor environment temperature is lower than the preset target temperature or not when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
and the fourth execution unit is used for continuing defrosting until defrosting is finished when the indoor environment temperature is greater than or equal to the preset target temperature.
The embodiment of the application provides an air conditioning system, including the air conditioner defrosting control device and the air conditioning unit that above-mentioned embodiment provided.
The embodiment of the application provides an air conditioner defrosting control system, includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
when the defrosting condition is met, judging CO2Whether the concentration is less than a preset target value;
if CO is present2The concentration is less than the preset target value, then the concentration is reducedThe frequency of the fan and/or the opening of the turn-down fresh air valve;
if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number.
In summary, the present invention provides an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner defrosting control system, where the air conditioner defrosting control method includes acquiring an operation state of a unit, and determining whether the operation state meets a preset defrosting condition; when the defrosting condition is met, judging CO2Whether the concentration is less than a preset target value; if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve; if CO is present2And when the concentration is more than or equal to a preset target value, calculating the number of the unit compressors capable of executing defrosting, and executing corresponding operation according to the number. The air conditioner defrosting method and device can ensure indoor fresh air volume and CO while defrosting the air conditioner2The concentration and the indoor temperature are stable, and the device is suitable for the use in the breeding industry.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (8)
1. An air conditioner defrosting control method is characterized by comprising the following steps:
acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
judging CO when the defrosting condition is met2Whether the concentration is less than a preset target value;
if CO is present2If the concentration is less than the preset target value, reducing the frequency of the fan and/or opening of the small fresh air valve;
if CO is present2Calculating the number of the unit compressors capable of executing defrosting when the concentration is more than or equal to a preset target value, and executing corresponding operation according to the number;
the executing corresponding operations according to the number comprises:
when the number of compressors of the unit capable of defrosting is zero, starting a new compressor;
when the number of the unit compressors capable of executing defrosting is larger than zero and the number of the unit compressors capable of executing defrosting is less than or equal to half of the total number of the started unit compressors, judging whether the indoor environment temperature is less than a preset target temperature;
if yes, increasing the frequency of the compressor of the unit which does not execute defrosting, judging whether defrosting is finished, continuously judging whether the indoor environment temperature is lower than a preset target temperature when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
otherwise, continuing defrosting until defrosting is finished.
2. The method of claim 1, wherein the determining whether the operating condition satisfies a preset defrosting condition comprises:
acquiring the temperature of a heat exchange tube, and judging whether the temperature of the heat exchange tube is less than or equal to a preset defrosting temperature or not;
if yes, determining that the unit meets a preset defrosting condition;
otherwise, determining that the unit does not meet the preset defrosting condition.
3. The method of claim 1, wherein: said determining CO2Whether the concentration is less than a preset target value includes:
by CO2Sensor for collecting indoor CO2Concentration;
judging the CO2Whether the concentration is less than a preset target value.
4. The method according to any one of claims 1-3, further comprising:
and if the preset defrosting condition is not met, the unit continues to operate.
5. The method of claim 1,
and acquiring the indoor environment temperature by adopting a temperature sensor, wherein the range of the preset target temperature is 19-35 ℃.
6. An air conditioner defrosting control device is characterized by comprising:
the acquisition module is used for acquiring the running state of the unit and judging whether the running state meets the preset defrosting condition;
a judging module for judging CO when the defrosting condition is satisfied2Whether the concentration is less than a preset target value;
a first execution module for if CO2When the concentration is smaller than a preset target value, reducing the frequency of the fan and/or reducing the opening of the fresh air valve;
the second execution module is used for calculating the number of the unit compressors capable of executing defrosting if the concentration of CO2 is greater than or equal to a preset target value, and executing corresponding operation according to the number;
the executing corresponding operations according to the number comprises:
when the number of compressors of the unit capable of defrosting is zero, starting a new compressor;
when the number of the unit compressors capable of executing defrosting is larger than zero and the number of the unit compressors capable of executing defrosting is less than or equal to half of the total number of the started unit compressors, judging whether the indoor environment temperature is less than a preset target temperature;
if yes, increasing the frequency of the compressor of the unit which does not execute defrosting, judging whether defrosting is finished, continuously judging whether the indoor environment temperature is lower than a preset target temperature when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
otherwise, continuing defrosting until defrosting is finished.
7. An air conditioning system, comprising: the air conditioning defrosting control device and the air conditioning unit according to claim 6.
8. An air conditioner defrosting control system is characterized by comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
acquiring the running state of a unit, and judging whether the running state meets a preset defrosting condition;
when the defrosting condition is met, judging whether the concentration of CO2 is less than a preset target value;
if the concentration of CO2 is smaller than a preset target value, reducing the frequency of the fan and/or reducing the opening of the fresh air valve;
if the concentration of CO2 is greater than or equal to a preset target value, calculating the number of unit compressors capable of executing defrosting, and executing corresponding operation according to the number;
the executing corresponding operations according to the number comprises:
when the number of compressors of the unit capable of defrosting is zero, starting a new compressor;
when the number of the unit compressors capable of executing defrosting is larger than zero and the number of the unit compressors capable of executing defrosting is less than or equal to half of the total number of the started unit compressors, judging whether the indoor environment temperature is less than a preset target temperature;
if yes, increasing the frequency of the compressor of the unit which does not execute defrosting, judging whether defrosting is finished, continuously judging whether the indoor environment temperature is lower than a preset target temperature when defrosting is not finished, and quitting defrosting after defrosting is determined to be finished;
otherwise, continuing defrosting until defrosting is finished.
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| US9835368B2 (en) * | 2011-09-13 | 2017-12-05 | Mitsubishi Electric Corporation | Refrigerating and air-conditioning apparatus for use in a defrosting operation |
| EP2757326B1 (en) * | 2011-09-13 | 2020-04-22 | Mitsubishi Electric Corporation | Refrigeration and air-conditioning device |
| CN105922843A (en) * | 2016-05-20 | 2016-09-07 | 上海交通大学 | Electric automobile fresh air exchanging air conditioner system and control method thereof |
| CN109282436B (en) * | 2018-08-27 | 2020-02-07 | 珠海格力电器股份有限公司 | Air conditioning unit compressor control method and device, computer equipment and storage medium |
| CN110178735A (en) * | 2019-04-18 | 2019-08-30 | 山东陆海新能源技术有限公司 | A kind of multifunctional disinfecting constant temperature and humidity ecologic breeding unit |
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