CN113639452B - Compressor control method for heat exchange system - Google Patents
Compressor control method for heat exchange system Download PDFInfo
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- CN113639452B CN113639452B CN202010344385.9A CN202010344385A CN113639452B CN 113639452 B CN113639452 B CN 113639452B CN 202010344385 A CN202010344385 A CN 202010344385A CN 113639452 B CN113639452 B CN 113639452B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000004378 air conditioning Methods 0.000 claims abstract description 41
- 239000000725 suspension Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of heat exchange, and particularly provides a compressor control method for a heat exchange system. The invention aims to solve the problem that the existing compressor control method is easy to cause the forced shutdown of an air conditioning unit due to improper control. To this end, the compressor control method of the present invention includes: under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor; comparing the current operating parameters and the load demand change information of the compressor with data stored in a server; selectively adjusting the operation parameters of the compressor according to the change condition of the load demand according to the comparison result; the data stored in the server comprises standard operation parameters and corresponding allowable load demand change information. According to the invention, whether the compressor fails after being adjusted is judged in advance through the mode, so that the compressor can be adjusted on the premise of no failure, and the operation reliability of the unit is further effectively ensured.
Description
Technical Field
The invention belongs to the technical field of heat exchange, and particularly provides a compressor control method for a heat exchange system.
Background
With the continuous improvement of the living standard of people, heat exchange equipment becomes essential equipment in the life of people. For all heat exchange equipment, the compressor is both an essential and important element and one of the most vulnerable elements. Particularly, for the magnetic suspension variable frequency centrifugal water chilling unit with extremely high utilization rate in recent years, the problem that the normal operation of the unit is influenced due to the fault of the compressor is particularly prominent. Specifically, the magnetic suspension centrifugal compressor used by the magnetic suspension variable-frequency centrifugal water chilling unit does not need to use lubricating oil in the operation process, so that the unit does not need to be provided with an oil way, and naturally, a plurality of elements are reduced, namely the unit can normally operate by almost only arranging the compressor, the condenser, the throttle valve and the evaporator on the refrigerant circulating loop. On the basis of the method, the overall failure rate of the unit is reduced; however, the problem that the compressor is easy to break down is highlighted, namely 90% of faults occurring in the operation process of the unit are all from the compressor of the unit, the existing compressor control method controls the operation of the compressor according to the heat exchange requirement of the unit all the time, then the operation parameters of the compressor are compared with the preset operation parameters, and the unit can give out early warning when the operation parameters of the compressor exceed a certain fixed preset operation parameter; however, in this case, the compressor is already in a poor operation state, and the shutdown phenomenon is easily and directly caused, so that the whole unit cannot normally operate, and the user experience is seriously affected.
Accordingly, there is a need in the art for a new compressor control method for a heat exchange system that addresses the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the conventional compressor control method is easy to cause the forced shutdown of the air conditioning unit due to improper control, the present invention provides a compressor control method for a heat exchange system, the heat exchange system includes an air conditioning unit and a server, the air conditioning unit includes the compressor, and the compressor control method includes: under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor; comparing the current operating parameters and load demand change information of the compressor with data stored in the server; selectively adjusting the operation parameters of the compressor according to the load demand change condition according to the comparison result; the data stored in the server comprises standard operation parameters and corresponding allowable load demand change information.
In a preferred embodiment of the above compressor control method, the step of "selectively adjusting the operating parameter of the compressor according to the variation of the load demand according to the comparison result" includes: and if the current operation parameters and the load demand change information of the compressor are matched with the standard operation parameters and the corresponding allowable load demand change information stored in the server, adjusting the operation parameters of the compressor according to the load demand change condition.
In a preferred embodiment of the above compressor control method, the data stored in the server further includes a critical operating parameter, and before the step of comparing the current operating parameter and the load demand change information of the compressor with the data stored in the server, the compressor control method further includes: comparing the current operating parameters of the compressor to the critical operating parameters; and selectively executing the step of comparing the current operating parameters and the load demand change information of the compressor with the data stored in the server according to the comparison result of the current operating parameters and the critical operating parameters of the compressor.
In a preferred embodiment of the above-described compressor control method, the step of selectively performing the step of comparing the current operation parameter and the load demand change information of the compressor with the data stored in the server according to the comparison result between the current operation parameter and the critical operation parameter of the compressor includes: and if the current operating parameter of the compressor does not match the critical operating parameter, executing the step of comparing the current operating parameter of the compressor and the load demand change information with the data stored in the server.
In a preferred embodiment of the above-mentioned compressor control method, the step of selectively performing the step of comparing the current operating parameter and the load demand change information of the compressor with the data stored in the server according to the comparison result between the current operating parameter and the critical operating parameter of the compressor further includes: and if the current operating parameters of the compressor are matched with the critical operating parameters, the step of comparing the current operating parameters and the load demand change information of the compressor with the data stored in the server is not executed, and the operating parameters of the compressor are not adjusted according to the load demand change condition.
In a preferred embodiment of the above compressor control method, the data stored in the server further includes a critical operating parameter, and the step of selectively adjusting the operating parameter of the compressor according to the load demand change condition according to the comparison result further includes: and if the current operating parameter of the compressor is matched with the critical operating parameter, the operating parameter of the compressor is not adjusted according to the load demand change condition.
In a preferred technical solution of the above-mentioned compressor control method, in a case where the current operating parameter of the compressor matches the critical operating parameter, the compressor control method further includes: and sending out a prompt that the operation parameters of the compressor are continuously adjusted and a fault occurs.
In a preferred technical solution of the above compressor control method, when the current operation parameter and the load demand change information of the compressor are not matched with the standard operation parameter and the allowable load demand change information stored in the server, the compressor control method further includes: comparing the current operating parameters of the compressor with a preset parameter range; and if the current operation parameter of the compressor is within the preset parameter range, adjusting the operation parameter of the compressor according to the load demand change condition.
In a preferred technical solution of the above compressor control method, the load demand change information is a load demand change direction and/or a load demand change amplitude.
In a preferred technical solution of the above compressor control method, the current operating parameter of the compressor is one or more of a suction temperature, a discharge temperature, a suction pressure, a discharge pressure, an inverter temperature, and a motor temperature of the compressor.
As can be understood by those skilled in the art, in the technical solution of the present invention, the heat exchange system of the present invention includes an air conditioning unit and a server, the air conditioning unit includes a compressor, and the compressor control method of the present invention includes: under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor; comparing the current operating parameters and load demand change information of the compressor with data stored in the server; selectively adjusting the operation parameters of the compressor according to the load demand change condition according to the comparison result; the data stored in the server comprises standard operation parameters and corresponding allowable load demand change information. According to the invention, whether the compressor fails after being adjusted is judged in advance by comparing the current operation parameters and the load demand change information of the compressor with the data stored in the server, so that the operation parameters of the compressor are adjusted on the premise that the compressor fails, and further, the heat exchange efficiency of the air conditioning unit is effectively improved on the premise that the normal operation of the air conditioning unit is effectively ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the air conditioning unit of the present invention;
FIG. 2 is a flow chart of the main steps of the compressor control method of the present invention;
FIG. 3 is a flow chart of the steps embodied in the compressor control method of the present invention;
reference numerals: 11. a magnetically levitated centrifugal compressor; 12. a one-way valve; 13. a condenser; 14. a first shut-off valve; 15. a filter; 16. a throttle valve; 17. a second stop valve; 18. an evaporator; 19. a butterfly valve.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the steps of the method of the present invention are described herein in a particular order, these orders are not limiting, and one skilled in the art may perform the steps in a different order without departing from the underlying principles of the invention.
It should be noted that, unless otherwise explicitly stated or limited, the terms "connected" and "connected" in the description of the present invention are to be interpreted broadly, and may be, for example, directly connected, indirectly connected through an intermediate medium, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Specifically, the heat exchange system comprises an air conditioning unit and a server, wherein the air conditioning unit comprises a controller, the controller can control the operation of the air conditioning unit, and the controller can also establish communication connection with the server. It should be noted that the controller and the server may adopt a communication mode of wired connection or a communication mode of wireless connection (for example, bluetooth, wifi, etc.); the server can be a cloud server or a local server. Referring to fig. 1, which is a schematic view of the overall structure of the air conditioning unit of the present invention, as shown in fig. 1, the air conditioning unit includes a main circulation loop, and a magnetically levitated centrifugal compressor 11, a check valve 12, a condenser 13, a first stop valve 14, a filter 15, a throttle valve 16, a second stop valve 17, an evaporator 18, and a butterfly valve 19 which are sequentially disposed on the main circulation loop, and the air conditioning unit exchanges heat through the main circulation loop and the magnetically levitated centrifugal compressor 11, the condenser 13, the throttle valve 16, and the evaporator 18 which are disposed on the main circulation loop. It should be noted that, although the preferred embodiment is described with reference to the case where the air conditioning unit is a magnetic suspension variable frequency centrifugal chiller, the air conditioning unit may obviously be other types of units, and only when the compressor control method of the present invention is applied to the magnetic suspension variable frequency centrifugal chiller, the better technical effect can be obtained, that is, a technician can set the specific structure of the air conditioning unit according to the actual use requirement; such changes in the applied objects do not depart from the basic principle of the present invention and belong to the protective scope of the present invention. In addition, the controller can acquire the operation conditions of the magnetic suspension centrifugal compressor 11, such as the operation parameters, the load and unload requirements and the like, and can compare the data with the data stored in the server and control the operation of the magnetic suspension centrifugal compressor 11 based on the comparison result; of course, the present invention does not impose any limitation on the subject of the method for controlling the compressor as long as the heat exchange system can perform the method for controlling the compressor of the present invention. It can be understood by those skilled in the art that the present invention does not limit the specific structure and type of the controller, and the controller may be the original controller of the air conditioning unit, or may be a controller separately configured to execute the compressor control method of the present invention, and the structure and type of the controller may be set by a technician according to actual use requirements.
Referring next to fig. 2, a flow chart of the main steps of the compressor control method of the present invention is shown. As shown in fig. 2, based on the heat exchange system described in the foregoing embodiment, the compressor control method of the present invention mainly includes the following steps:
s1: under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor;
s2: comparing the current operating parameters and the load demand change information of the compressor with data stored in a server;
s3: and selectively adjusting the operating parameters of the compressor according to the load demand change condition according to the comparison result.
In step S1, if the controller detects that there is a load demand change in the compressor 11, the current operating parameters and load demand change information of the compressor 11 are acquired. Specifically, when the heat transfer demand of air conditioning unit changes, the load demand of compressor 11 also can change, for example when the temperature of intaking of air conditioning unit changes, or when the leaving water temperature that sets for changes, the heat transfer demand of air conditioning unit will change, and the load demand of compressor 11 also can change thereupon. It should be noted that the present invention does not limit any specific type or manner of obtaining the current operation parameter of the compressor 11 by the controller, and the skilled person can set the current operation parameter according to the actual use requirement, for example, the current operation parameter may be one or more of the suction temperature, the discharge temperature, the suction pressure, the discharge pressure, the inverter temperature and the motor temperature of the compressor 11, and such changes do not depart from the basic principle of the present invention and belong to the protection scope of the present invention. In addition, the present invention does not limit any specific type or manner of obtaining the load demand change information of the compressor 11 by the controller, and the technician may set the load demand change information according to the actual use requirement, for example, the load demand change information may be a load demand change direction and/or a load demand change amplitude, that is, whether the compressor 11 needs to be loaded or unloaded, and a loading amplitude or a unloading amplitude thereof.
In step S2, the controller may acquire data stored in the server, and compare the acquired current operating parameters and load demand change information of the compressor 11 with the data stored in the server; the data stored in the server comprises standard operation parameters and corresponding allowable load demand change information. Of course, this comparison process may be completed in the controller, the server, or even by means of an external device, as long as the comparison can be achieved; such implementation variants do not depart from the basic principle of the invention, and belong to the protection scope of the invention. It should be noted that the standard operation parameters are parameters that the compressor 11 can normally operate according to the operation parameters and can normally operate after a preset amplitude is normally loaded and/or unloaded, and the standard operation parameters are standard data that are usually measured by a manufacturer through a plurality of tests before leaving a factory, and may also include data obtained by self-learning some air conditioning units in the operation process.
In step S3, the controller can selectively adjust the operation parameters of the compressor 11 according to the comparison result and the load demand variation condition; specifically, the controller can pre-determine whether the compressor 11 fails after adjustment according to the comparison result, so that the controller can adjust the operation parameters of the compressor 11 on the premise that the compressor 11 fails, and further effectively improve the heat exchange efficiency of the air conditioning unit on the premise that the air conditioning unit can normally operate. It should be noted that the present invention does not limit any specific corresponding relationship between the comparison result and whether to adjust the compressor 11, and the technician can set the relationship according to the actual use requirement.
Referring now to fig. 3, a flowchart illustrating the steps of the method for controlling a compressor according to the present invention is shown. As shown in fig. 3, based on the heat exchange system described in the foregoing embodiment, the compressor control method of the present invention specifically includes the following steps:
s101: under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor;
s102: judging whether the current operation parameters are matched with the critical operation parameters; if yes, go to step S103; if not, executing step S104;
s103: the method comprises the steps that the operation parameters of the compressor are not adjusted according to the change condition of the load demand, and a prompt that the operation parameters of the compressor are continuously adjusted and a fault occurs is sent out;
s104: judging whether the current operation parameters and the load demand change information are matched with standard data stored in a server or not; if yes, go to step S106; if not, executing step S105;
s105: judging whether the current operation parameters are within a preset parameter range or not; if yes, go to step S106; if not, executing step S103;
s106: and adjusting the operation parameters of the compressor according to the load demand change condition.
Specifically, in step S101, if the controller detects that there is a load demand change in the compressor 11, the current operating parameters of the compressor 11 and the load demand change information are acquired. In the preferred embodiment, the load demand change information includes a load demand change direction and a load demand change amplitude of the compressor 11, that is, whether the compressor 11 needs to be loaded and its corresponding load amplitude or whether it needs to be unloaded and its corresponding load amplitude. Of course, this is not restrictive, and the technician may also set the type of the load demand change information according to the actual use demand. In addition, it should be noted that the present invention does not limit the type and manner of the controller obtaining the current operation parameter of the compressor 11, and the technician may set the current operation parameter according to the actual use requirement, for example, the current operation parameter may be one or more of the suction temperature, the discharge temperature, the suction pressure, the discharge pressure, the inverter temperature and the motor temperature of the compressor 11.
Next, in step S102, the controller can compare the current operating parameter of the compressor 11 with the critical operating parameter stored in the server so as to determine whether the current operating parameter of the compressor 11 matches with the critical operating parameter stored in the server, and the present invention effectively simplifies the overall operation amount by setting this determination condition, so that the controller can quickly eliminate a part of the conditions that the compressor 11 cannot be adjusted. The critical operation parameter is a parameter that the compressor 11 can normally operate according to the operation parameter, but the compressor cannot continue to normally operate after load and unload are performed on the basis of the operation parameter; in other words, the compressor 11 can normally operate at the operating parameter, but the load and unload operations are not possible any more, otherwise the compressor 11 cannot normally operate, these critical operating parameters are data measured by a manufacturer through a plurality of tests before leaving the factory, and of course, data obtained by self-learning of some air conditioning units during operation may also be included.
It should be noted that, in the preferred embodiment, two ways of determining whether the current operation parameter matches the critical operation parameter include determining whether the current operation parameter is equal to the critical operation parameter, and determining whether a difference between the current operation parameter and the critical operation parameter is smaller than a preset difference, where the current operation parameter matches the critical operation parameter as long as any one of the conditions is met, that is, as long as the current operation parameter matches the critical operation parameter, the operation of increasing or decreasing the load of the compressor 11 is continued, which may cause the compressor 11 to fail to operate normally. Of course, the technical personnel can also adjust the device according to the actual use requirement.
In addition, it should be noted that, when the obtained current operating parameters only include one parameter, only the parameter is compared; when the current operation parameters comprise a plurality of types, each type of parameter can be respectively compared, then judgment is carried out by combining all comparison results, priorities can also be set for different parameters, the types of the parameters participating in the judgment are determined according to the priorities, and then judgment is carried out according to the determined parameters; changes in this specific manner of comparison may be made without departing from the underlying principles of the invention and are intended to be within the scope of the invention.
Based on the judgment result of step S102, if the current operation parameter of the compressor 11 matches the critical operation parameter stored in the server, step S103 is executed, specifically, the controller does not adjust the operation parameter of the compressor 11 according to the load demand change condition, that is, the compressor 11 is maintained in the current operation state, so as to effectively avoid the problem that the compressor 11 fails to operate normally after adjustment, thereby ensuring that the air conditioning unit can maintain normal operation to the maximum extent. On the basis, the air conditioning unit can also send a prompt to a user that the running parameters of the compressor 11 are continuously adjusted to cause a fault, so that the user can timely master the running condition of the air conditioning unit, and the air conditioning unit can also prompt background workers by uploading current running data. It should be noted that, the invention does not limit the way of prompting the user by the air conditioning unit, and a technician can set the mode according to the actual use requirement as long as the user can be prompted; for example, the information is displayed through a display screen of the air conditioning unit or played through a voice broadcasting system of the air conditioning unit.
Further, if the current operation parameter of the compressor 11 does not match the critical operation parameter stored in the server, step S104 is performed, i.e., the controller can determine whether the current operation parameter and the load demand change information of the compressor 11 match the standard operation parameter stored in the server and the allowable load demand change information corresponding thereto. In the preferred embodiment, the controller can acquire the current operation parameters of the compressor 11, the load demand change direction and the load demand change amplitude in step S101, and the controller can compare these data with the standard data stored in the server, so as to determine whether the current operation parameters and the load demand change information of the compressor 11 match the standard operation parameters stored in the server and the allowable load demand change information corresponding thereto, and determine whether the controller can adjust the operation parameters of the compressor 11 according to the load demand change condition based on the comparison result.
It should be noted that step S102 and step S104 may be executed simultaneously as parallel steps, that is, the controller may execute step S102 and step S104 simultaneously, and the determination order may be changed without departing from the basic principle of the present invention, which falls into the protection scope of the present invention. Meanwhile, the step of acquiring the load demand change information may also be performed between step S102 and step S104, and such a change in the acquisition timing does not depart from the basic principle of the present invention and falls within the protection scope of the present invention.
Based on the judgment result of the step S104, if the current operation parameters and the load demand change information of the compressor 11 match the standard operation parameters and the allowable load demand change information stored in the server, the step S106 is performed. For example, in a case that the current operation parameter of the compressor 11 matches a certain standard operation parameter stored in the server, if the load demand change direction and the load demand change width of the compressor 11 can also match the allowable load demand change direction and the load demand change width corresponding to the standard operation parameter, that is, in a case that the load demand change direction of the compressor 11 is the same as the allowable load demand change direction corresponding to the standard operation parameter, if the load demand change width of the compressor 11 is smaller than or equal to the allowable load demand change width corresponding to the standard operation parameter, step S106 is directly executed, that is, the controller can adjust the operation parameter of the compressor 11 according to the load demand change condition, so as to meet the heat exchange requirement of the user at the fastest speed on the premise that the air conditioning unit can normally operate.
In addition, if the current operation parameter and the load demand change information of the compressor 11 do not match the standard operation parameter and the allowable load demand change information corresponding thereto stored in the server, step S105 is executed, that is, the controller can determine whether the current operation parameter of the compressor 11 is not within the preset parameter range, so as to further determine whether the controller can adjust the operation parameter of the compressor 11 according to the load demand change condition. It should be noted that, a technician may set the preset parameter range according to actual use requirements, as long as the current operation parameter of the compressor 11 exceeds the preset parameter range, the air conditioning unit will be in a failure.
Based on the judgment result of step S105, if the current operation parameter of the compressor 11 is within the preset parameter range, step S106 is executed, that is, the controller adjusts the operation parameter of the compressor 11 according to the load demand change condition, so as to effectively meet the heat exchange demand of the user. If the current operation parameter of the compressor 11 is not within the preset parameter range, step S103 is executed, that is, the controller does not adjust the operation parameter of the compressor 11 according to the load demand change condition, that is, the compressor 11 is allowed to maintain the current operation state, so as to effectively avoid the problem that the compressor 11 fails to operate normally after adjustment, thereby ensuring that the air conditioning unit can maintain normal operation to the greatest extent.
As will be understood by those skilled in the art, the heat exchange system may be self-learned through the subsequent operation result of step S105, that is, if the air conditioning unit can still operate normally after the operation parameters of the compressor 11 are adjusted, the controller may upload the set of data to the server, and the server stores the set of data as standard data; and if the air conditioning unit cannot normally operate and stops after the operation parameters of the compressor 11 are adjusted, the controller can also upload the group of data to the server, the server stores the operation parameters as critical operation parameters, and different units of the same type can upload respective data to the server so as to realize data sharing, thereby effectively improving the accuracy of the judgment result and further gradually improving the reliability of the air conditioning system.
Finally, it should be noted that the above examples are all preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. When the present invention is actually used, a part of the steps may be added or deleted as needed or the order between the different steps may be changed by those skilled in the art. Such variations are not to be regarded as a departure from the spirit and scope of the invention.
So far, the technical solutions of the present invention have been described with reference to the accompanying drawings, but it is obvious to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (3)
1. A compressor control method for a heat exchange system is characterized in that the heat exchange system comprises an air conditioning unit and a server, the air conditioning unit comprises the compressor, and the compressor control method comprises the following steps:
under the condition that the load demand of the compressor changes, acquiring the current operation parameters and the load demand change information of the compressor;
comparing the current operating parameters and load demand change information of the compressor with data stored in the server;
selectively adjusting the operation parameters of the compressor according to the load demand change condition according to the comparison result;
the data stored in the server comprises standard operation parameters and corresponding allowable load demand change information;
the step of selectively adjusting the operation parameters of the compressor according to the variation of the load demand according to the comparison result includes:
if the current operation parameters and the load demand change information of the compressor are matched with the standard operation parameters and the corresponding allowable load demand change information stored in the server, adjusting the operation parameters of the compressor according to the load demand change condition;
the data stored in the server further includes critical operating parameters, and the compressor control method further includes, before the step of comparing the current operating parameters and the load demand change information of the compressor with the data stored in the server:
comparing the current operating parameter of the compressor to the critical operating parameter;
if the current operating parameters of the compressor are matched with the critical operating parameters, the step of comparing the current operating parameters and the load demand change information of the compressor with the data stored in the server is not executed, the operating parameters of the compressor are not adjusted according to the load demand change condition, and a prompt that the fault occurs when the operating parameters of the compressor are continuously adjusted is sent out;
if the current operating parameters of the compressor are not matched with the critical operating parameters, executing the step of comparing the current operating parameters and the load demand change information of the compressor with the data stored in the server;
in a case where the current operation parameter and the load demand change information of the compressor do not match the standard operation parameter and the allowable load demand change information corresponding thereto stored in the server, the compressor control method further includes:
comparing the current operating parameters of the compressor with a preset parameter range;
and if the current operation parameter of the compressor is within the preset parameter range, adjusting the operation parameter of the compressor according to the load demand change condition.
2. The compressor control method according to claim 1, wherein the load demand change information is a load demand change direction and/or a load demand change magnitude.
3. The compressor control method of claim 1, wherein the current operating parameter of the compressor is one or more of a suction temperature, a discharge temperature, a suction pressure, a discharge pressure, an inverter temperature, and a motor temperature of the compressor.
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| CN202010344385.9A CN113639452B (en) | 2020-04-27 | 2020-04-27 | Compressor control method for heat exchange system |
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| CN202010344385.9A CN113639452B (en) | 2020-04-27 | 2020-04-27 | Compressor control method for heat exchange system |
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| CN113639452B true CN113639452B (en) | 2023-02-28 |
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| CN (1) | CN113639452B (en) |
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