CN117545222A - Control method of fixed-frequency fluorine pump air conditioning system - Google Patents

Control method of fixed-frequency fluorine pump air conditioning system Download PDF

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Publication number
CN117545222A
CN117545222A CN202311297149.6A CN202311297149A CN117545222A CN 117545222 A CN117545222 A CN 117545222A CN 202311297149 A CN202311297149 A CN 202311297149A CN 117545222 A CN117545222 A CN 117545222A
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China
Prior art keywords
fluorine pump
air conditioning
conditioning system
initial
pump air
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Pending
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CN202311297149.6A
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Chinese (zh)
Inventor
乔晓光
桂省锋
廖福兴
杨江
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Shenzhen Yingweiteng Net Energy Technology Co ltd
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Shenzhen Yingweiteng Net Energy Technology Co ltd
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Priority to CN202311297149.6A priority Critical patent/CN117545222A/en
Publication of CN117545222A publication Critical patent/CN117545222A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/208—Liquid cooling with phase change
    • H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20836—Thermal management, e.g. server temperature control
    • 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

Abstract

The application discloses fixed frequency fluorine pump air conditioning system control method is applied to the controller in the fixed frequency fluorine pump air conditioning system, and fixed frequency fluorine pump system still includes fixed frequency fluorine pump, outdoor fan, condenser and the evaporimeter of connecting in the controller, and fixed frequency fluorine pump air conditioning system control method includes: when the fixed-frequency fluorine pump is determined to be triggered to be started, determining the initial fan rotating speed of the outdoor fan according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system; and controlling the rotation of the outdoor fan according to the rotation speed of the initial fan, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator. The method realizes the control of the rotation of the outdoor fan according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system so as to adjust the initial condensation pressure of the condenser and then the initial evaporation pressure of the evaporator, thereby achieving the control of the cold output of the fixed-frequency fluorine pump air conditioning system and improving the control accuracy of controlling the temperature of the communication machine room.

Description

Control method of fixed-frequency fluorine pump air conditioning system
Technical Field
The application belongs to the technical field of precise air conditioners, and particularly relates to a control method of a fixed-frequency fluorine pump air conditioning system.
Background
Along with the increasing development of technology, the requirements of communication equipment in a communication machine room are higher, and the power consumption and the heat productivity of the communication equipment are also higher. In view of the great heat productivity of the communication equipment in the communication room, refrigeration is needed to reduce the environmental temperature in the communication room all the year round.
At present, the communication machine room mainly uses a fixed-frequency fluorine pump air conditioning system for refrigerating and cooling, and the fixed-frequency fluorine pump air conditioning system controls the temperature of the communication machine room by outputting constant refrigerating capacity.
However, when the communication equipment of communication computer lab load operation is less, the present calorific capacity in the communication computer lab is less, and the invariable refrigerating output of fixed frequency fluorine pump air conditioning system is greater than the present calorific capacity, and fixed frequency fluorine pump air conditioning system will frequently start, and the temperature of communication computer lab is constantly undulant from top to bottom, leads to the control accuracy to the temperature of communication computer lab lower.
Disclosure of Invention
In view of the foregoing, embodiments of the present application provide a control method for a constant frequency fluorine pump air conditioning system to overcome or at least partially solve the above problems of the prior art.
In a first aspect, an embodiment of the present application provides a control method of a fixed frequency fluorine pump air conditioning system, which is applied to a controller in the fixed frequency fluorine pump air conditioning system, and the fixed frequency fluorine pump air conditioning system further includes a fixed frequency fluorine pump, an outdoor fan, a condenser and an evaporator connected to the controller, and the control method of the fixed frequency fluorine pump air conditioning system includes: when the fixed-frequency fluorine pump is determined to be triggered to be started, determining the initial fan rotating speed of the outdoor fan according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system; and controlling the rotation of the outdoor fan according to the rotation speed of the initial fan, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator.
In a second aspect, an embodiment of the present application provides a control device for a fixed frequency fluorine pump air conditioning system, which is applied to a controller in the fixed frequency fluorine pump air conditioning system, and the fixed frequency fluorine pump air conditioning system further includes a fixed frequency fluorine pump, an outdoor fan, a condenser and an evaporator connected to the controller, where the control device for the fixed frequency fluorine pump air conditioning system includes an initial rotation speed determining module and an initial rotation control module. The initial rotating speed determining module is used for determining the initial rotating speed of the outdoor fan according to the initial refrigerating requirement of the fixed-frequency fluorine pump air conditioning system when the fixed-frequency fluorine pump is triggered to be started; and the initial rotation control module is used for controlling the rotation of the outdoor fan according to the rotation speed of the initial fan, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator.
In a third aspect, embodiments of the present application provide a constant frequency fluorine pump air conditioning system, including a memory; one or more processors coupled to the memory; one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more applications configured to perform the method of controlling a variable frequency fluorine pump air conditioning system as provided in the first aspect above.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having program code stored therein, the program code being capable of being invoked by a processor to perform a method for controlling a fixed frequency fluorine pump air conditioning system as provided in the first aspect above.
In a fifth aspect, embodiments of the present application provide a computer program product, which when run on a computer device, causes the computer device to perform the method for controlling a fixed frequency fluorine pump air conditioning system as provided in the first aspect above.
According to the scheme, when the fixed frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigerating demand of the fixed frequency fluorine pump air conditioning system, and the outdoor fan is controlled to rotate according to the initial fan rotating speed, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator, the rotation of the outdoor fan is controlled according to the initial refrigerating demand of the fixed frequency fluorine pump air conditioning system to regulate the initial condensing pressure of the condenser, and then the initial evaporating pressure of the evaporator is regulated, so that the cold output control of the fixed frequency fluorine pump air conditioning system is achieved, the cold output of the fixed frequency fluorine pump air conditioning system is matched with the heat generated by communication equipment running under the load of a communication machine room, the temperature stability in the communication machine room is guaranteed, and the control accuracy for controlling the temperature of the communication machine room is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic view of a scenario of a fixed frequency fluorine pump air conditioning system provided in an embodiment of the present application;
fig. 2 shows a pressure enthalpy diagram of the constant frequency fluorine pump air conditioning system provided in an embodiment of the present application;
fig. 3 is a schematic flow chart of a control method of a constant-frequency fluorine pump air conditioning system according to an embodiment of the present application;
fig. 4 is a schematic flow chart of another control method of the fixed-frequency fluorine pump air conditioning system according to the embodiment of the present application;
fig. 5 shows a block diagram of a control device of a fixed-frequency fluorine pump air conditioning system according to an embodiment of the present application;
FIG. 6 illustrates a functional block diagram of a constant frequency fluorine pump air conditioning system provided in an embodiment of the present application;
fig. 7 illustrates a computer readable storage medium provided in an embodiment of the present application for storing or carrying program code for implementing a method for controlling a fixed frequency fluorine pump air conditioning system provided in accordance with an embodiment of the present application;
Fig. 8 illustrates a computer program product for storing or carrying program code for implementing a control method of a fixed frequency fluorine pump air conditioning system according to an embodiment of the present application.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In addition, in the description of the present application, the terms "first," "second," "third," etc. are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Along with the increasing development of technology, the requirements of communication equipment in a communication machine room are higher, and the power consumption and the heat productivity of the communication equipment are also higher. In view of the great heat productivity of the communication equipment in the communication room, refrigeration is needed to reduce the environmental temperature in the communication room all the year round.
At present, the communication machine room mainly uses a fixed-frequency fluorine pump air conditioning system for refrigerating and cooling, and the fixed-frequency fluorine pump air conditioning system controls the temperature of the communication machine room by outputting constant refrigerating capacity.
However, when the communication equipment of communication computer lab load operation is less, the present calorific capacity in the communication computer lab is less, and the invariable refrigerating output of fixed frequency fluorine pump air conditioning system is greater than the present calorific capacity, and fixed frequency fluorine pump air conditioning system will frequently start, and the temperature of communication computer lab is constantly undulant from top to bottom, leads to the control accuracy to the temperature of communication computer lab lower.
According to the control method for the fixed-frequency fluorine pump air conditioning system, when the fixed-frequency fluorine pump is triggered to be started, according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system, the initial fan rotating speed of the outdoor fan is determined, and the outdoor fan is controlled to rotate according to the initial fan rotating speed, so that the initial condensing pressure of the condenser is adjusted by the outdoor fan to adjust the initial evaporating pressure of the evaporator, the rotation of the outdoor fan is controlled according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system to adjust the initial condensing pressure of the condenser, and then the initial evaporating pressure of the evaporator is adjusted, so that the cold output of the fixed-frequency fluorine pump air conditioning system is controlled to be matched with the heat generated by communication equipment running on the load of the communication machine room, the temperature stability in the communication machine room is guaranteed, and the control accuracy of controlling the temperature of the communication machine room is improved.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, a schematic diagram of an application scenario of a fixed-frequency fluorine pump air conditioning system according to an embodiment of the present application may include a controller 110, a fixed-frequency fluorine pump 111, an outdoor fan 112, a condenser 113, and an evaporator 114, where the controller 110 is communicatively connected to the fixed-frequency fluorine pump 111, the outdoor fan 112, the condenser 113, and the evaporator 114, and performs data interaction with the fixed-frequency fluorine pump 111, the outdoor fan 112, the condenser 113, and the evaporator 114.
The constant frequency fluorine pump 111, the outdoor fan 112, and the condenser 113 are installed outdoors, and the controller 110 and the evaporator 114 are installed indoors.
The fixed frequency fluorine pump 111, the evaporator 114, and the condenser 113 are connected in order by pipes, and together define a circulation loop. The input end of the fixed frequency fluorine pump 111 is connected to the output end of the condenser 113, the output end of the fixed frequency fluorine pump 111 is connected to the input end of the evaporator 114, and the output end of the evaporator 114 is connected to the input end of the condenser 113.
The outdoor fan 112 is installed with respect to the condenser 113 and serves to adjust the condensing pressure of the condenser 113.
In some embodiments, the fixed frequency fluorine pump air conditioning system may further include a heat exchange medium circulating in the pipe, the heat exchange medium circulating in the pipe under the driving of the fluorine pump pressure difference generated by the fixed frequency fluorine pump 111.
The heat exchange medium may be a phase-change heat exchange medium (e.g., freon, difluoroethane, trifluoromethane, tetrafluoroethane, etc.), water, liquid ammonia, etc., and the type of the heat exchange medium is not limited herein, and may be specifically set according to actual requirements.
In some embodiments, the fixed frequency fluorine pump air conditioning system may further include a pre-pump pressure sensor 115 installed outdoors and a post-pump pressure sensor 116, the pre-pump pressure sensor 115 being connected between the fixed frequency fluorine pump 111 and the condenser 113 through a pipe, and the post-pump pressure sensor 116 being connected between the fixed frequency fluorine pump 111 and the evaporator 114 through a pipe.
The pre-pump pressure sensor 115 and the post-pump pressure sensor 116 are communicatively coupled to the controller 110 and are in data communication with the controller 110.
The pre-pump pressure sensor 115 is configured to collect pre-pump heat exchange medium pressure of the heat exchange medium flowing into the pre-fixed frequency fluorine pump 111 after being cooled by the condenser 113 (i.e., pre-pump pressure of the fixed frequency fluorine pump 111), and to send the collected pre-pump heat exchange medium pressure to the controller 110.
The post-pump pressure sensor 116 is configured to collect post-pump heat exchange medium pressure of the heat exchange medium flowing out of the fixed frequency fluorine pump 111 (i.e., post-pump pressure of the fixed frequency fluorine pump 111), and send the collected post-pump heat exchange medium pressure to the controller 110.
The controller 110 is configured to receive the pre-pump heat exchange medium pressure sent by the pre-pump pressure sensor 115 and the post-pump heat exchange medium pressure sent by the post-pump pressure sensor 116, and determine a fluorine pump differential pressure of the fixed frequency fluorine pump according to the pre-pump heat exchange medium pressure and the post-pump heat exchange medium pressure.
In some embodiments, the fixed frequency fluorine pump air conditioning system may further include a first check valve 117, an evaporation pressure sensor 118, a return air temperature sensor 119, an indoor fan 120, and an electronic expansion valve 121 installed indoors.
The first check valve 117 is connected between the condenser 113 and the evaporator 114 through a pipe so that the heat exchange medium flows unidirectionally from the evaporator 114 to the condenser 113. The evaporating pressure sensor 118 is disposed between the first check valve 117 and the evaporator 114 and near the evaporator 114, the return air temperature sensor 119 and the indoor fan 120 are installed on the evaporator 114, and the electronic expansion valve 121 is connected between the evaporator 114 and the post-pump pressure sensor 116 through a pipe.
The controller 110 is communicatively connected to the first check valve 117, the evaporating pressure sensor 118, the return air temperature sensor 119, the indoor fan 120 and the electronic expansion valve 121, and performs data interaction with the evaporating pressure sensor 118, the return air temperature sensor 119, the indoor fan 120 and the electronic expansion valve 121.
The evaporating pressure sensor 118 is used for collecting evaporating pressure of the evaporator 114, and sending the collected evaporating pressure to the controller 110, so that the controller 110 calculates the evaporating temperature of the evaporator 114 according to the received evaporating pressure and the physical parameters of the heat exchange medium. The return air temperature sensor 119 is used for collecting indoor temperature and sending the collected indoor temperature to the controller 110.
In some embodiments, the fixed frequency fluorine pump air conditioning system may further include a compressor 122 installed in the room, the compressor 122 being connected between the evaporator 114 and the condenser 113 through a pipe, and a second check valve 123 being connected between the compressor 122 and the condenser 113 through a pipe, so that the heat exchange medium flows unidirectionally from the compressor 122 to the condenser 113. The controller 110 is communicatively coupled to the compressor 122 and is in data communication with the compressor 122.
It will be appreciated that after the outdoor supercooled liquid heat exchange medium (i.e., the heat exchange medium before the pump) passes through the fixed frequency fluorine pump 111, the pressure (the pressure of the heat exchange medium after the pump) will rise, and then reaches the evaporator 114 through the electronic expansion valve 121 to exchange heat with the indoor environment, the heat exchange medium changes from a liquid state to a superheated gas state, flows into the condenser 113 through the pipe, exchanges heat with the outdoor environment, changes from the superheated gas state to a supercooled liquid state, and flows back to the fixed frequency fluorine pump 111 through the pipe.
The relationship between the pressure and the enthalpy of the fixed frequency fluorine pump air conditioning system in the refrigeration mode as shown in fig. 2 is satisfied, the evaporation pressure of the evaporator 114 is directly affected by the condensation pressure, and the evaporation pressure directly affects the system refrigerating capacity of the fixed frequency fluorine pump air conditioning system, so that the condensation pressure and thus the evaporation pressure can be controlled to indirectly control the refrigerating capacity output of the fixed frequency fluorine pump air conditioning system.
Referring to fig. 3, a flowchart of a control method of a constant frequency fluorine pump air conditioning system according to an embodiment of the present application is shown. In a specific embodiment, the control method of the fixed frequency fluorine pump air conditioning system may be applied to the controller 110 in the fixed frequency fluorine pump air conditioning system shown in fig. 1, and the flow shown in fig. 3 will be described in detail below by taking the controller 110 as an example, and the control method of the fixed frequency fluorine pump air conditioning system may include the following steps S110 to S120.
Step S110: when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system.
In the embodiment of the application, when the controller determines that the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan can be determined according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system.
Wherein, the controller can set the temperature T according to the indoor of the constant frequency fluorine pump air conditioning system s Initial indoor temperature T 1 Calculating the corresponding initial refrigeration requirement S according to a formula I 1 。
The first formula is:
th is a control proportion band of the fixed frequency fluorine pump air conditioning system, th can be a proportion band preset by a user, can also be a proportion band automatically generated by a controller according to a control process for controlling the fixed frequency fluorine pump air conditioning system for a plurality of times, and the like, is not limited to Th, and can be specifically set according to actual requirements.
The controller can be based on the initial refrigeration requirement S 1 Calculating the corresponding initial fan rotating speed U according to a formula II 1 。
The formula II is:
K p is the rotation speed proportionality coefficient of the outdoor fan, K p A set value determined in advance for a user according to the actual debugging state of the fixed-frequency fluorine pump air conditioning system;
t is the control period of the outdoor fan;
T i for the rotational speed integral time of the outdoor fan, T i A set value determined in advance for a user according to the actual debugging state of the fixed-frequency fluorine pump air conditioning system;
e (n) is the indoor temperature deviation value at the kth sampling time, e (n) =t 1 -T s ；
U min Is the lowest rotation speed of the outdoor fan.
In some embodiments, the controller may obtain an initial cooling requirement of the fixed frequency fluorine pump air conditioning system, determine whether the initial cooling requirement meets a trigger start condition of the fixed frequency fluorine pump, trigger and start the fixed frequency fluorine pump when determining that the initial cooling requirement meets the trigger start condition of the fixed frequency fluorine pump, and determine an initial fan rotation speed of the outdoor fan according to the initial cooling requirement of the fixed frequency fluorine pump air conditioning system when determining that the fixed frequency fluorine pump is triggered and started, thereby ensuring that the fixed frequency fluorine pump is triggered and started when meeting the trigger start condition, avoiding energy consumption waste caused by starting the fixed frequency fluorine pump air conditioning system when no cooling is needed, and improving operation energy efficiency of the fixed frequency fluorine pump air conditioning system.
The controller can send a first opening instruction to the fixed-frequency fluorine pump, and the fixed-frequency fluorine pump receives and responds to the first opening instruction to start working.
The controller can acquire the initial indoor temperature and the initial outdoor temperature of the fixed-frequency fluorine pump air conditioning system, determine whether the initial indoor temperature and the initial outdoor temperature meet the starting conditions of the fixed-frequency fluorine pump, and determine the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system according to the indoor set temperature and the initial indoor temperature when the initial indoor temperature and the initial outdoor temperature are determined to meet the starting conditions of the fixed-frequency fluorine pump.
When the initial outdoor temperature is smaller than a preset temperature threshold value and the initial temperature difference between the initial indoor temperature and the initial outdoor temperature is larger than a preset temperature difference threshold value, determining that the initial indoor temperature and the initial outdoor temperature meet the starting condition of the fixed-frequency fluorine pump; otherwise, determining that the initial indoor temperature and the initial outdoor temperature do not meet the starting condition of the constant frequency fluorine pump.
The preset temperature threshold value is used for representing a maximum temperature value corresponding to the outdoor temperature of the fixed-frequency fluorine pump air conditioning system at the extremely low temperature, and the preset temperature difference threshold value is used for representing a minimum temperature difference value corresponding to the indoor and outdoor temperature difference of the fixed-frequency fluorine pump air conditioning system at the large temperature difference.
When the initial refrigeration requirement is greater than or equal to the first preset refrigeration requirement, determining that the initial refrigeration requirement meets the triggering starting condition of the fixed-frequency fluorine pump; when the initial refrigeration requirement is smaller than the first preset refrigeration requirement, determining that the initial refrigeration requirement does not meet the triggering starting condition of the fixed-frequency fluorine pump.
The first preset refrigeration requirement can be a refrigeration requirement preset by a user, or can be a refrigeration requirement automatically generated by a controller according to a control process of controlling the fixed-frequency fluorine pump air conditioning system for a plurality of times, and the like, and the setting mode of the first preset refrigeration requirement is not limited herein, and can be specifically set according to actual requirements.
Step S120: and controlling the rotation of the outdoor fan according to the rotation speed of the initial fan.
In this application embodiment, the controller can send the first control command that carries initial fan rotational speed to outdoor fan, outdoor fan receives and responds the first control command that the controller sent, rotate with initial fan rotational speed, make outdoor fan adjust the initial condensing pressure of condenser, with the initial evaporating pressure of regulation evaporimeter, realized controlling the rotation of outdoor fan according to the initial refrigeration demand of fixed frequency fluorine pump air conditioning system, with the initial condensing pressure of regulation condenser, and then adjust the initial evaporating pressure of evaporimeter, reach the cold volume output control to fixed frequency fluorine pump air conditioning system, the cold volume of fixed frequency fluorine pump air conditioning system output and the heat that communication equipment of communication computer lab load operation produced match, the temperature stability in the communication computer lab has been guaranteed, the control accuracy of controlling the temperature of communication computer lab has been improved.
In some embodiments, after the controller controls the outdoor fan to rotate according to the initial fan rotation speed, the initial refrigerating capacity of the evaporator can be controlled according to the first preset superheat degree, so that auxiliary control of the refrigerating capacity of the fixed-frequency fluorine pump air conditioning system according to the first preset superheat degree is realized, and the control accuracy of controlling the temperature of the communication machine room is further improved.
In some embodiments, after the initial cooling capacity of the evaporator is controlled according to the first preset superheat degree, the controller can obtain the current indoor temperature of the fixed-frequency fluorine pump air conditioning system, determine the current cooling requirement of the fixed-frequency fluorine pump air conditioning system according to the current indoor temperature and the indoor set temperature, determine whether the current cooling requirement is a weak cooling requirement, determine the current fan rotating speed of the outdoor fan according to the current cooling requirement when determining that the current cooling requirement is the weak cooling requirement, send a second control instruction carrying the current fan rotating speed to the outdoor fan, the outdoor fan receives and responds to the second control instruction, and rotate at the current fan rotating speed, so that the outdoor fan adjusts the current condensing pressure of the condenser to adjust the current evaporating pressure of the evaporator, the current condensing pressure of the condenser is adjusted according to the current cooling requirement of the fixed-frequency fluorine pump air conditioning system, the current output cooling capacity of the fixed-frequency fluorine pump air conditioning system is matched with heat generated by communication equipment currently responsible for running, the temperature in a communication machine room is guaranteed, and the communication accuracy of the machine room is further improved.
If the current refrigeration requirement is smaller than or equal to the second preset refrigeration requirement, determining that the current refrigeration requirement is a weak refrigeration requirement; and if the current refrigeration requirement is larger than the second preset refrigeration requirement, determining that the current refrigeration requirement is a non-weak refrigeration requirement.
The second preset refrigeration requirement is smaller than the first preset refrigeration requirement, the second preset refrigeration requirement can be a refrigeration requirement preset by a user, and can also be a refrigeration requirement automatically generated by a controller according to a control process for controlling the fixed-frequency fluorine pump air conditioning system for a plurality of times, the setting mode of the second preset refrigeration requirement is not limited, and the second preset refrigeration requirement can be specifically set according to actual requirements.
The controller can control the current indoor temperature T of the constant-frequency fluorine pump air conditioning system 2 Indoor set temperature T s Calculating corresponding current refrigeration requirement S according to a formula III 2 。
The formula III is:
the controller can be based on the current refrigeration requirement S 2 Calculating the corresponding current fan rotating speed U according to a formula IV 2 。
The fourth formula is:
in some embodiments, the controller may obtain the current evaporation pressure of the evaporator after controlling the initial cooling capacity of the evaporator according to the first preset superheat degree, determine whether the evaporator has a risk of frosting and icing according to the current evaporation pressure, obtain the current indoor temperature of the fixed frequency fluorine pump air conditioning system when determining that the evaporator does not have a risk of frosting and icing according to the current evaporation pressure, determine the current cooling requirement of the fixed frequency fluorine pump air conditioning system according to the current indoor temperature and the indoor set temperature, determine whether the current cooling requirement is a weak cooling requirement, determine the current fan rotation speed of the outdoor fan according to the current cooling requirement when determining that the current cooling requirement is a weak cooling requirement, and send a second control instruction carrying the current fan rotation speed to the outdoor fan, and the outdoor fan receives and responds to the second control instruction to rotate at the current fan rotation speed, thereby ensuring that the fixed frequency fluorine pump air conditioning system is cooled according to the current cooling requirement when the risk of frosting and icing does not exist, and improving the operation safety of the fixed frequency fluorine pump air conditioning system.
The controller can collect the current evaporation pressure of the evaporator through the evaporation pressure sensor and receive the current evaporation pressure returned by the evaporation pressure sensor.
If the current evaporation pressure is greater than or equal to the preset evaporation pressure, determining that the evaporator is free of frosting and icing risks; and if the current evaporation pressure is smaller than the preset evaporation pressure, determining that the evaporator is at risk of frosting and icing.
The preset evaporation pressure is used for representing the minimum evaporation pressure when the evaporator is at risk of frosting and icing, the preset evaporation pressure can be a pressure value preset by a user, can also be a pressure value automatically generated by a controller according to a control process for controlling the fixed-frequency fluorine pump air conditioning system for a plurality of times, and the like, the setting mode of the preset evaporation pressure is not limited, and the preset evaporation pressure can be specifically set according to actual requirements.
In some embodiments, when the controller determines that the evaporator has a risk of frosting and icing according to the current evaporation pressure, the refrigerating capacity of the fixed frequency fluorine pump air conditioning system exceeds the refrigerating requirement of the fluorine pump air conditioning system, and the initial fan rotating speed of the outdoor fan can be reduced according to a preset rule so as to improve the condensation pressure of the condenser, further improve the evaporation pressure and the corresponding evaporation temperature, avoid frosting of the evaporator and reduce the safety risk in the running process of the fixed frequency fluorine pump air conditioning system.
The preset rule may be any one of a speed change rate rule or a speed reduction duration rule, for example, the speed change rate rule may be a rule that the speed is reduced by 50 revolutions per minute, the speed reduction duration rule may be a rule that the initial fan speed is reduced to the lowest speed within 5 minutes, and the like, where the type of the preset rule is not limited, and the preset rule may be specifically set according to actual requirements.
In some embodiments, when the controller determines that the evaporator has frost and ice risks according to the current evaporation pressure, after the rotation speed of the initial fan is reduced according to a preset rule, the target evaporation pressure after the speed reduction can be obtained, whether the evaporator has frost and ice risks or not is determined according to the target evaporation pressure, and when the evaporator has frost and ice risks according to the target evaporation pressure, corresponding frost protection reminding information is generated, so that a user can conveniently process the fixed-frequency fluorine pump air conditioning system according to the frost protection reminding information, and the heat exchange efficiency of the evaporator is prevented from being greatly reduced due to frost and ice.
The controller can collect target evaporation pressure of the evaporator through the evaporation pressure sensor and receive the target evaporation pressure returned by the evaporation pressure sensor.
If the target evaporation pressure is greater than or equal to the preset evaporation pressure, determining that the evaporator is free of frosting and icing risks; and if the target evaporation pressure is smaller than the preset evaporation pressure, determining that the evaporator is at risk of frosting and icing.
The anti-freezing protection reminding information can be at least any one of text anti-freezing protection reminding information, sound anti-freezing protection reminding information, lamplight anti-freezing protection reminding information and the like, the type of the anti-freezing protection reminding information is not limited here, and the anti-freezing protection reminding information can be specifically set according to actual requirements.
In some embodiments, the fixed frequency fluorine pump air conditioning system further comprises a compressor connected to the controller and a second one-way valve. When the controller determines that the evaporator is at risk of frosting and icing according to the target evaporation pressure, after corresponding anti-freezing protection reminding information is generated, the constant-frequency fluorine pump air conditioning system can be controlled to be switched from a fluorine pump refrigeration mode to a compressor refrigeration mode, namely, a heat exchange medium flows to the condenser in one direction from the compressor, so that normal refrigeration output of the constant-frequency fluorine pump air conditioning system is ensured, and the stability of the ambient temperature is maintained.
The controller can send a second opening instruction to the compressor, and the compressor receives and responds to the second opening instruction to start working.
In some embodiments, when the controller determines that there is no risk of frosting and icing of the evaporator according to the target evaporation pressure, the reduced fan speed of the outdoor fan may be obtained, and the reduced fan speed may be determined as the highest speed of the outdoor fan.
In some embodiments, the controller may obtain a current fluorine pump pressure difference of the fixed frequency fluorine pump after controlling the initial cooling capacity of the evaporator according to the first preset superheat degree, determine whether the fixed frequency fluorine pump is in a normal operation state according to the current fluorine pump pressure difference, obtain a current evaporation pressure of the evaporator when determining that the fixed frequency fluorine pump is in the normal operation state according to the current fluorine pump pressure difference, determine whether the evaporator has a risk of frosting and icing according to the current evaporation pressure, obtain a current cooling requirement of the fixed frequency fluorine pump air conditioning system when determining that the evaporator does not have a risk of frosting and icing according to the current evaporation pressure, determine whether the current cooling requirement is a weak cooling requirement, determine a current fan rotation speed of the outdoor fan according to the current cooling requirement when determining that the current cooling requirement is a weak cooling requirement, and send a second control instruction carrying the current fan rotation speed to the outdoor fan, the outdoor fan receives and rotates at the current fan rotation speed in response to the second control instruction, thereby ensuring that the fixed frequency fluorine pump of the fixed frequency fluorine pump air conditioning system is in the normal operation state, and the evaporator does not have a risk of frosting and further improving the safety of the fixed frequency fluorine pump air conditioning system.
The controller can collect the current pre-pump pressure and the current post-pump pressure of the fixed-frequency fluorine pump through the pre-pump pressure sensor and the post-pump pressure sensor, receive the current pre-pump pressure returned by the pre-pump pressure sensor and the current post-pump pressure returned by the post-pump pressure sensor, and calculate the current fluorine pump pressure difference of the fixed-frequency fluorine pump according to the current post-pump pressure and the current pre-pump pressure.
If the current fluorine pump pressure difference is greater than or equal to the fluorine pump pressure difference threshold value, determining that the constant-frequency fluorine pump is in a normal running state; and if the current fluorine pump pressure difference is smaller than the fluorine pump pressure difference threshold value, determining that the constant-frequency fluorine pump is in an abnormal operation state.
The fluorine pump pressure difference threshold is used for representing the minimum fluorine pump pressure difference value when the fixed-frequency fluorine pump is in a normal running state, and can be a pressure difference value preset by a user, or can be a pressure difference value automatically generated by a controller according to a control process for controlling the fixed-frequency fluorine pump air conditioning system for a plurality of times, and the like, and the setting mode of the fluorine pump pressure difference threshold is not limited, and can be specifically set according to actual requirements.
In some embodiments, when the controller determines that the fixed frequency fluorine pump is in an abnormal operation state according to the current fluorine pump pressure difference, the fixed frequency fluorine pump is controlled to shut down and restart, and the restarting fluorine pump pressure difference after the restarting of the fixed frequency fluorine pump is obtained, and whether the fixed frequency fluorine pump is in a normal operation state is determined according to the restarting fluorine pump pressure difference, and when the fixed frequency fluorine pump is determined to be in a normal operation state according to the restarting fluorine pump pressure difference, the current evaporation pressure of the evaporator is obtained, and the risk of frost and ice is determined according to the current evaporation pressure, and when the evaporator is determined to not have the risk of frost and ice, the current refrigeration requirement of the fixed frequency fluorine pump air conditioning system is obtained, and whether the current refrigeration requirement is a weak refrigeration requirement is determined, and when the current refrigeration requirement is determined to be a weak refrigeration requirement, the current fan rotating speed of the outdoor fan is determined according to the current refrigeration requirement, and a second control instruction carrying the current fan rotating speed is sent to the outdoor fan, the outdoor fan receives and rotates at the current fan rotating speed, the fixed frequency fluorine pump is ensured to be in a normal operation state, and when the evaporator is determined to not have the risk of frost and the fixed frequency fluorine pump air conditioning system is further adjusted according to the current refrigeration requirement.
The method for obtaining the pressure difference of the restarting fluorine pump is the same as the method for obtaining the pressure difference of the current fluorine pump, and the process for obtaining the pressure difference of the restarting fluorine pump can refer to the process for obtaining the pressure difference of the current fluorine pump, which is not described herein.
In some embodiments, when the controller determines that the fixed frequency fluorine pump is in an abnormal operation state according to the restarting fluorine pump pressure difference, the controller can repeatedly control the fixed frequency fluorine pump to be turned off and restarted, after the fixed frequency fluorine pump is turned off and restarted for preset times, the fixed frequency fluorine pump is locked when the fixed frequency fluorine pump is still in the abnormal operation state according to the restarting fluorine pump pressure difference, and determines whether the air conditioning system of the fixed frequency fluorine pump is controlled to be switched from a fluorine pump refrigeration mode to a compressor refrigeration mode according to the restarting refrigeration requirement, so that the service life of the fixed frequency fluorine pump is shortened due to heavy restarting of the fixed frequency fluorine pump frequency, and the fixed frequency fluorine pump is ensured to have longer service life.
The preset times are preset times by a user, or may be times automatically generated by the controller according to a control process of controlling the fixed-frequency fluorine pump air conditioning system for multiple times, etc., where the preset times are not limited to a setting manner, and may be specifically set according to actual requirements.
According to the scheme provided by the embodiment, when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system, and the outdoor fan is controlled to rotate according to the initial fan rotating speed, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator, the rotation of the outdoor fan is controlled according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system to regulate the initial condensing pressure of the condenser, and then the initial evaporating pressure of the evaporator is regulated, so that the cold output control of the fixed-frequency fluorine pump air conditioning system is achieved, the cold output of the fixed-frequency fluorine pump air conditioning system is matched with the heat generated by communication equipment running under the load of a communication machine room, the temperature stability in the communication machine room is guaranteed, and the control accuracy for controlling the temperature of the communication machine room is improved.
Referring to fig. 4, a flowchart of a control method of a constant frequency fluorine pump air conditioning system according to another embodiment of the present application is shown. In a specific embodiment, the control method of the fixed frequency fluorine pump air conditioning system may be applied to the controller 110 in the fixed frequency fluorine pump air conditioning system shown in fig. 1, and the flow shown in fig. 4 will be described in detail below by taking the controller 110 as an example, and the control method of the fixed frequency fluorine pump air conditioning system may include the following steps S210 to S290.
Step S210: when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system.
Step S220: and controlling the rotation of the outdoor fan according to the rotation speed of the initial fan.
Step S230: and controlling the initial refrigerating capacity of the evaporator according to the first preset superheat degree.
Step S240: it is determined whether the current refrigeration demand of the fixed frequency fluorine pump air conditioning system is a weak refrigeration demand.
Step S250: and when the current refrigeration requirement is determined to be the weak refrigeration requirement, determining the current fan rotating speed of the outdoor fan according to the current refrigeration requirement.
Step S260: and controlling the rotation of the outdoor fan according to the current rotation speed of the fan.
In this embodiment, the steps S210, S220, S230, S240, S250 and S260 may refer to the content of the corresponding steps in the foregoing embodiments, and will not be described herein.
Step S270: and controlling the current refrigerating capacity of the evaporator according to the second preset superheat degree.
In this embodiment, after the controller controls the rotation of the outdoor fan according to the current fan rotation speed, the current refrigeration capacity of the evaporator can be controlled according to a second preset superheat degree, and the second preset superheat degree is greater than the first preset superheat degree, so that the auxiliary control of the refrigeration capacity of the fixed-frequency fluorine pump air conditioning system according to the second preset superheat degree is realized, and the control accuracy of controlling the temperature of the communication machine room is further improved. And when the refrigerating requirement of the fixed frequency fluorine pump air conditioning system is smaller, the refrigerating output of the whole system can be reduced by increasing the superheat degree.
Step S280: and obtaining the target refrigeration requirement of the regulated constant-frequency fluorine pump air conditioning system.
In this embodiment, after controlling the current cooling capacity of the evaporator according to the second preset superheat degree, the controller may obtain the adjusted target indoor temperature of the fixed frequency fluorine pump air conditioning system, and may determine the target cooling requirement of the fixed frequency fluorine pump air conditioning system according to the target indoor temperature and the indoor set temperature.
Wherein, the controller can be according to the target indoor temperature T of the constant frequency fluorine pump air conditioning system after the regulation 3 Indoor set temperature T s Calculating the corresponding target refrigeration requirement S according to a formula five 3 。
The fifth formula is:
in some embodiments, after obtaining the adjusted target refrigeration requirement of the fixed frequency fluorine pump air conditioning system, the controller may determine whether the target refrigeration requirement meets a refrigeration exit condition of the fixed frequency fluorine pump air conditioning system.
When the target refrigeration requirement is smaller than the third preset refrigeration requirement, determining that the target refrigeration requirement meets the refrigeration exit condition of the fixed-frequency fluorine pump air conditioning system; and when the target refrigeration requirement is greater than or equal to the third preset refrigeration requirement, determining that the target refrigeration requirement does not meet the refrigeration exit condition of the fixed-frequency fluorine pump air conditioning system.
The third preset refrigeration requirement is smaller than the second preset refrigeration requirement, the third preset refrigeration requirement can be a refrigeration requirement preset by a user, and can also be a refrigeration requirement automatically generated by a controller according to a control process for controlling the fixed-frequency fluorine pump air conditioning system for a plurality of times, the setting mode of the third preset refrigeration requirement is not limited, and the third preset refrigeration requirement can be specifically set according to actual requirements.
Step S290: and when the target refrigeration requirement is determined to meet the refrigeration exit condition of the fixed-frequency fluorine pump air conditioning system, controlling the fixed-frequency fluorine pump air conditioning system to stop refrigeration.
In this embodiment, when the controller determines that the target refrigeration requirement meets the refrigeration exit condition of the fixed frequency fluorine pump air conditioning system, a third control instruction may be sent to the fixed frequency fluorine pump, the condenser and the evaporator, and the fixed frequency fluorine pump, the condenser and the evaporator all receive and respond to the third control instruction and switch to the closed state, so as to control the fixed frequency fluorine pump air conditioning system to stop refrigeration, and control the fixed frequency fluorine pump air conditioning system to stop refrigeration when the refrigeration requirement of the fixed frequency fluorine pump air conditioning system is sufficiently small, so that an excessive difference between the indoor set temperature and the indoor temperature is avoided, and the temperature control precision is improved.
In some embodiments, when the controller determines that the target refrigeration requirement does not meet the refrigeration exit condition of the fixed frequency fluorine pump air conditioning system, the step S270 is executed back until the fixed frequency fluorine pump air conditioning system is controlled to stop refrigeration when the target refrigeration requirement is determined to meet the refrigeration exit condition of the fixed frequency fluorine pump air conditioning system, so that when the refrigeration requirement of the fixed frequency fluorine pump air conditioning system is small enough, the fixed frequency fluorine pump air conditioning system is controlled to stop refrigeration, the difference between the indoor set temperature and the indoor temperature is avoided from being too large, and the temperature control precision is improved.
According to the scheme provided by the embodiment, when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system, the outdoor fan is controlled to rotate according to the initial fan rotating speed, the initial refrigerating capacity of the evaporator is controlled according to the first preset superheat degree, whether the current refrigerating demand of the fixed-frequency fluorine pump air conditioning system is a weak refrigerating demand is determined, when the current refrigerating demand is determined to be the weak refrigerating demand, the current fan rotating speed of the outdoor fan is determined according to the current refrigerating demand, the outdoor fan is controlled to rotate according to the current fan rotating speed, the current refrigerating capacity of the evaporator is controlled according to the second preset superheat degree, the target refrigerating demand of the regulated fixed-frequency fluorine pump air conditioning system is obtained, and when the target refrigerating demand is determined to meet the refrigerating exit condition of the fixed-frequency fluorine pump air conditioning system, the controlled-frequency fluorine pump air conditioning system stops refrigerating, so that when the refrigerating demand of the fixed-frequency fluorine pump air conditioning system is small enough, the indoor set-temperature difference value is avoided, and the temperature control precision is improved.
Referring to fig. 5, which illustrates a fixed frequency fluorine pump air conditioning system control device 300 according to an embodiment of the present application, the fixed frequency fluorine pump air conditioning system control device 300 may be applied to the controller 110 in the fluorine pump air conditioning system illustrated in fig. 1, and the fixed frequency fluorine pump air conditioning system control device 300 illustrated in fig. 5 will be described in detail by taking the controller 110 as an example, where the fixed frequency fluorine pump air conditioning system control device 300 may include an initial rotation speed determining module 310 and an initial rotation control module 320.
The initial rotation speed determining module 310 may be configured to determine an initial fan rotation speed of the outdoor fan according to an initial refrigeration requirement of the fixed frequency fluorine pump air conditioning system when it is determined that the fixed frequency fluorine pump is triggered to be turned on; the initial rotation control module 320 may be configured to control the rotation of the outdoor fan according to the initial fan rotation speed such that the outdoor fan adjusts the initial condensing pressure of the condenser to adjust the initial evaporating pressure of the evaporator.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may also include an initial cooling control module.
The initial cooling control module may be configured to control the initial cooling capacity of the evaporator according to the first preset superheat after the initial rotation control module 320 controls the rotation of the outdoor fan according to the initial fan rotation speed.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include a demand determination module, a current rotational speed determination module, and a current rotational control module.
The demand determining module can be used for determining whether the current refrigeration demand of the fixed-frequency fluorine pump air conditioning system is a weak refrigeration demand; the current rotation speed determining module may be configured to determine a current fan rotation speed of the outdoor fan according to the current refrigeration requirement when the current refrigeration requirement is determined to be a weak refrigeration requirement; the current rotation control module can be used for controlling the rotation of the outdoor fan according to the current fan rotation speed, so that the outdoor fan can adjust the current condensing pressure of the condenser to adjust the current evaporating pressure of the evaporator.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include a first risk determination module.
The first risk determination module may be configured to determine whether there is a risk of frosting and icing the evaporator according to a current evaporation pressure of the evaporator before the demand determination module determines whether a current refrigeration demand of the fixed frequency fluorine pump air conditioning system is a weak refrigeration demand.
In some embodiments, the current refrigeration demand determination module may include a first determination unit.
The first determining unit may be configured to determine whether the current refrigeration requirement of the fixed frequency fluorine pump air conditioning system is a weak refrigeration requirement when it is determined that there is no risk of frosting and icing of the evaporator according to the current evaporation pressure.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include a pressure differential acquisition module and a status determination module.
The pressure difference acquisition module can be used for acquiring the current fluorine pump pressure difference of the fixed-frequency fluorine pump before the first risk determination module determines whether the evaporator has the risk of frosting and icing according to the current evaporation pressure of the evaporator; the state determining module can be used for determining whether the constant-frequency fluorine pump is in a normal running state according to the current fluorine pump pressure difference.
In some embodiments, the first risk determination module may comprise a second determination unit.
The second determining unit may be configured to determine whether there is a risk of frosting and icing of the evaporator according to a current evaporation pressure of the evaporator when it is determined that the fixed frequency fluorine pump is in a normal operation state according to a current fluorine pump pressure difference.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may also include a speed reduction module.
The speed reduction module can be used for reducing the rotating speed of the initial fan according to a preset rule when the risk of frosting and icing of the evaporator is determined according to the current evaporation pressure.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include a pressure acquisition module, a second risk determination module, and a generation module.
The pressure acquisition module can be used for acquiring the target evaporation pressure after the speed reduction; the second risk determination module may be configured to determine whether there is a risk of frosting and icing the evaporator according to the target evaporation pressure; the generation module can be used for generating corresponding anti-freezing protection reminding information when the risk of frosting and icing of the evaporator is determined according to the target evaporation pressure.
In some embodiments, the fixed frequency fluorine pump air conditioning system may further include a compressor connected to the controller, and the fixed frequency fluorine pump air conditioning system control device 300 may further include a switching control module.
The switching control module can be used for controlling the frequency-setting fluorine pump air conditioning system to switch from a fluorine pump refrigeration mode to a compressor refrigeration mode after corresponding anti-freezing protection reminding information is generated when the generating module determines that the evaporator has the risk of frosting and icing according to the target evaporation pressure.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may also include a current refrigeration control module.
The current refrigeration control module can be used for controlling the current refrigeration capacity of the evaporator according to a second preset superheat degree after the current rotation control module controls the outdoor fan to rotate according to the current fan rotating speed, and the second preset superheat degree is larger than the first preset superheat degree.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include a target refrigeration demand acquisition module and a stop control module.
The target refrigeration requirement acquisition module can be used for acquiring the target refrigeration requirement of the regulated constant-frequency fluorine pump air conditioning system after the current refrigeration control module controls the current refrigeration capacity of the evaporator according to the second preset superheat degree; the stop control module can be used for controlling the fixed frequency fluorine pump air conditioning system to stop refrigerating when the target refrigerating requirement is determined to meet the refrigerating exit condition of the fixed frequency fluorine pump air conditioning system.
In some embodiments, the fixed frequency fluorine pump air conditioning system control device 300 may further include an initial refrigeration demand acquisition module, a trigger on condition determination module, and a trigger on module.
The initial refrigeration requirement acquisition module may be configured to acquire an initial refrigeration requirement of the fixed frequency fluorine pump air conditioning system before determining an initial fan rotation speed of the outdoor fan according to the initial refrigeration requirement of the fixed frequency fluorine pump air conditioning system when determining that the fixed frequency fluorine pump is triggered to be turned on; the trigger opening condition determining module can be used for determining whether the initial refrigeration requirement meets the trigger opening condition of the fixed-frequency fluorine pump; the trigger opening module can be used for triggering and opening the fixed-frequency fluorine pump when the initial refrigeration requirement is determined to meet the trigger opening condition of the fixed-frequency fluorine pump.
In some embodiments, the initial refrigeration demand acquisition module may include a third determination unit and a fourth determination unit.
The third determining unit may be configured to determine whether an initial indoor temperature and an initial outdoor temperature of the fixed frequency fluorine pump air conditioning system satisfy an on condition of the fixed frequency fluorine pump; the fourth determining unit may be configured to determine an initial cooling requirement of the fixed frequency fluorine pump air conditioning system according to the indoor set temperature and the initial indoor temperature when it is determined that the initial indoor temperature and the initial outdoor temperature satisfy the on condition of the fixed frequency fluorine pump.
According to the scheme provided by the embodiment, when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system, and the outdoor fan is controlled to rotate according to the initial fan rotating speed, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator, the rotation of the outdoor fan is controlled according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system to regulate the initial condensing pressure of the condenser, and then the initial evaporating pressure of the evaporator is regulated, so that the cold output control of the fixed-frequency fluorine pump air conditioning system is achieved, the cold output of the fixed-frequency fluorine pump air conditioning system is matched with the heat generated by communication equipment running under the load of a communication machine room, the temperature stability in the communication machine room is guaranteed, and the control accuracy for controlling the temperature of the communication machine room is improved.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points. Any of the described processing manners in the method embodiment may be implemented by a corresponding processing module in the device embodiment, which is not described in detail in the device embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
Referring to fig. 6, a functional block diagram of a fixed frequency fluorine pump air conditioning system 600 provided in an embodiment of the present application is shown, where the fixed frequency fluorine pump air conditioning system 600 may include one or more of the following components: memory 610, processor 620, and one or more applications, wherein the one or more applications may be stored in memory 610 and configured to be executed by the one or more processors 620, the one or more applications configured to perform the method as described in the foregoing method embodiments.
The Memory 610 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Memory 610 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 610 may include a memory program area and a memory data area, where the memory program area may store instructions for implementing an operating system, instructions for implementing at least one function (e.g., triggering a fixed frequency fluorine pump, determining an initial fan speed, controlling an outdoor fan rotation, adjusting an initial condensing pressure, adjusting an initial evaporating pressure, controlling an initial cooling capacity, determining whether a current cooling demand is a weak cooling demand, determining that the current cooling demand is a weak cooling demand, determining a current fan speed, adjusting the current condensing pressure, adjusting the current evaporating pressure, determining whether there is a risk of frosting and icing, determining that there is no risk of frosting and icing, obtaining a current fluorine pump differential pressure, determining whether the fixed frequency fluorine pump is in a normal operating state, determining that there is a risk of frosting and icing, reducing an initial fan speed, obtaining a target evaporating pressure, generating anti-frosting protection reminder information, switching from a fluorine pump cooling mode to a compressor cooling mode, controlling a current cooling capacity, obtaining a target cooling demand, determining whether a cooling exit condition is met, stopping cooling, obtaining the initial demand, determining whether a triggering on condition is met, determining whether a trigger on condition is met, determining whether the opening condition is met, determining whether the opening condition is met, and the opening command is implemented, etc.). The data storage area may also store data created during use of the fixed frequency fluorine pump air conditioning system 600 (e.g., fixed frequency fluorine pump air conditioning system, controller, fixed frequency fluorine pump, outdoor fan, condenser, evaporator, initial cooling demand, initial fan speed, initial condensing pressure, initial evaporating pressure, first preset superheat, initial cooling capacity, current cooling demand, weak cooling demand, current fan speed, current condensing pressure, current evaporating pressure, frosting and icing, current fluorine pump pressure differential, normal operating conditions, preset rules, target evaporating pressure, anti-freeze protection reminder information, fluorine pump cooling mode, compressor cooling mode, second preset superheat, current cooling capacity, target cooling demand, cooling exit condition, trigger on condition, indoor temperature, outdoor temperature, and on condition), etc.
Processor 620 may include one or more processing cores. The processor 620 connects the various parts within the overall fixed frequency fluorine pump air conditioning system 600 using various interfaces and lines to perform various functions and processes of the fixed frequency fluorine pump air conditioning system 600 by running or executing instructions, programs, code sets, or instruction sets stored in the memory 610 and invoking data stored in the memory 610. Alternatively, the processor 620 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 620 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for being responsible for rendering and drawing of display content; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 620 and may be implemented solely by a single communication chip.
Referring to fig. 7, a block diagram of a computer readable storage medium according to an embodiment of the present application is shown. The computer readable storage medium 700 has stored therein program code 710, the program code 710 being executable by a processor to perform the method described in the method embodiments described above.
The computer readable storage medium 700 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 700 comprises a non-volatile computer readable medium (non-transitory computer-readable storage medium). The computer readable storage medium 700 has memory space for program code 710 that performs any of the method steps described above. The program code can be read from or written to one or more computer program products. Program code 710 may be compressed, for example, in a suitable form.
Referring to fig. 8, a block diagram of a computer program product 800 according to an embodiment of the present application is shown. The computer program product 800 includes a computer program/instructions 810, the computer program/instructions 810 being stored in a computer readable storage medium of a computer device. When the computer program product 800 is run on a computer device, the processor of the computer device reads the computer program/instructions 810 from the computer readable storage medium, and the processor executes the computer program/instructions 810, so that the computer device performs the method described in the above method embodiments.
According to the scheme provided by the embodiment, when the fixed-frequency fluorine pump is triggered to be started, the initial fan rotating speed of the outdoor fan is determined according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system, and the outdoor fan is controlled to rotate according to the initial fan rotating speed, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator, the rotation of the outdoor fan is controlled according to the initial refrigerating demand of the fixed-frequency fluorine pump air conditioning system to regulate the initial condensing pressure of the condenser, and then the initial evaporating pressure of the evaporator is regulated, so that the cold output control of the fixed-frequency fluorine pump air conditioning system is achieved, the cold output of the fixed-frequency fluorine pump air conditioning system is matched with the heat generated by communication equipment running under the load of a communication machine room, the temperature stability in the communication machine room is guaranteed, and the control accuracy for controlling the temperature of the communication machine room is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The utility model provides a fixed frequency fluorine pump air conditioning system control method which is characterized in that is applied to the controller in the fixed frequency fluorine pump air conditioning system, fixed frequency fluorine pump, outdoor fan, condenser and the evaporimeter that the fixed frequency fluorine pump air conditioning system still is connected in the controller, fixed frequency fluorine pump air conditioning system control method includes:
when the fixed-frequency fluorine pump is triggered to be started, determining the initial fan rotating speed of the outdoor fan according to the initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system;
and controlling the outdoor fan to rotate according to the rotating speed of the initial fan, so that the initial condensing pressure of the condenser is regulated by the outdoor fan to regulate the initial evaporating pressure of the evaporator.
2. The method according to claim 1, wherein after the outdoor fan is controlled to rotate according to the initial fan rotation speed, the method further comprises:
and controlling the initial refrigerating capacity of the evaporator according to the first preset superheat degree.
3. The method according to claim 2, wherein after the initial cooling capacity of the evaporator is controlled according to a first preset superheat degree, the method further comprises:
Determining whether the current refrigeration requirement of the fixed frequency fluorine pump air conditioning system is a weak refrigeration requirement;
when the current refrigeration requirement is determined to be the weak refrigeration requirement, determining the current fan rotating speed of the outdoor fan according to the current refrigeration requirement;
and controlling the outdoor fan to rotate according to the current fan rotating speed, so that the outdoor fan can adjust the current condensing pressure of the condenser to adjust the current evaporating pressure of the evaporator.
4. The method according to claim 3, wherein before determining whether the current cooling demand of the fixed frequency fluorine pump air conditioning system is a weak cooling demand, the method further comprises:
determining whether the evaporator has a risk of frosting and icing according to the current evaporation pressure of the evaporator;
the determining whether the current refrigeration requirement of the fixed frequency fluorine pump air conditioning system is a weak refrigeration requirement comprises:
and when the evaporator is determined to be free of frosting and icing risks according to the current evaporation pressure, determining whether the current refrigeration requirement of the fixed-frequency fluorine pump air conditioning system is a weak refrigeration requirement or not.
5. The method according to claim 4, wherein before determining whether there is a risk of frosting and icing of the evaporator according to the current evaporation pressure of the evaporator, the method further comprises:
acquiring the current fluorine pump pressure difference of the fixed-frequency fluorine pump;
determining whether the constant-frequency fluorine pump is in a normal running state according to the current fluorine pump pressure difference;
the determining whether the evaporator has a risk of frosting and icing according to the current evaporating pressure of the evaporator comprises the following steps:
and when the constant-frequency fluorine pump is in a normal running state according to the current fluorine pump pressure difference, determining whether the evaporator is at risk of frosting and icing according to the current evaporation pressure of the evaporator.
6. The method for controlling a constant frequency fluorine pump air conditioning system according to claim 4, further comprising:
and when the risk of frosting and icing of the evaporator is determined according to the current evaporating pressure, reducing the rotating speed of the initial fan according to a preset rule.
7. The method of controlling a constant frequency fluorine pump air conditioning system according to claim 6, further comprising a compressor connected to the controller, the method further comprising:
Acquiring target evaporation pressure after speed reduction;
and when the risk of frosting and icing of the evaporator is determined according to the target evaporation pressure, controlling the constant-frequency fluorine pump air conditioning system to switch from a fluorine pump refrigeration mode to a compressor refrigeration mode.
8. The method according to claim 3, wherein after the outdoor fan is controlled to rotate according to the current fan rotation speed, the method further comprises:
and controlling the current refrigerating capacity of the evaporator according to a second preset superheat degree, wherein the second preset superheat degree is larger than the first preset superheat degree.
9. The method according to claim 8, wherein after the current cooling capacity of the evaporator is controlled according to a second preset superheat degree, the method further comprises:
acquiring the target refrigeration requirement of the regulated constant-frequency fluorine pump air conditioning system;
and when the target refrigeration requirement is determined to meet the refrigeration exit condition of the fixed frequency fluorine pump air conditioning system, controlling the fixed frequency fluorine pump air conditioning system to stop refrigeration.
10. The control method of a constant frequency fluorine pump air conditioning system according to any one of claims 1 to 9, wherein the constant frequency fluorine pump air conditioning system control method, before determining an initial fan rotational speed of the outdoor fan according to an initial cooling demand of the constant frequency fluorine pump air conditioning system when it is determined that the constant frequency fluorine pump is triggered to be turned on, further comprises:
Acquiring an initial refrigeration requirement of the fixed-frequency fluorine pump air conditioning system;
determining whether the initial refrigeration requirement meets a trigger starting condition of the fixed-frequency fluorine pump;
and triggering and starting the fixed-frequency fluorine pump when the initial refrigeration requirement is determined to meet the triggering and starting conditions of the fixed-frequency fluorine pump.
CN202311297149.6A 2023-10-08 2023-10-08 Control method of fixed-frequency fluorine pump air conditioning system Pending CN117545222A (en)

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Application Number Priority Date Filing Date Title
CN202311297149.6A CN117545222A (en) 2023-10-08 2023-10-08 Control method of fixed-frequency fluorine pump air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311297149.6A CN117545222A (en) 2023-10-08 2023-10-08 Control method of fixed-frequency fluorine pump air conditioning system

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Publication Number Publication Date
CN117545222A true CN117545222A (en) 2024-02-09

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Application Number Title Priority Date Filing Date
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