CN112378003B - Energy-saving air conditioner and control method thereof - Google Patents
Energy-saving air conditioner and control method thereof Download PDFInfo
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- CN112378003B CN112378003B CN202011224283.XA CN202011224283A CN112378003B CN 112378003 B CN112378003 B CN 112378003B CN 202011224283 A CN202011224283 A CN 202011224283A CN 112378003 B CN112378003 B CN 112378003B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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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- 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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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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
Abstract
The application discloses energy-conserving air conditioner and control method thereof, this energy-conserving air conditioner includes: the controller controls the compressor refrigeration cycle and the natural cold source cycle to run independently, or the controller controls the compressor refrigeration cycle and the natural cold source cycle to be communicated into a cycle; the compressor refrigeration cycle includes: the indoor first heat exchanger, the seventh electromagnetic valve, the compressor, the first one-way valve, the outdoor first heat exchanger, the first electromagnetic valve and the expansion valve are connected in sequence; the natural cold source cycle includes: the indoor second heat exchanger, the second one-way valve, the outdoor second heat exchanger, the second electromagnetic valve and the circulating pump are sequentially connected; the indoor first heat exchanger and the indoor second heat exchanger use the same indoor fan; the outdoor first heat exchanger uses an outdoor first fan, and the outdoor second heat exchanger uses an outdoor second fan. The energy-saving air conditioner runs in different modes according to needs, and the energy efficiency of the air conditioner is improved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an energy-saving air conditioner and a control method thereof.
Background
The number and scale of communication rooms and data centers has been increasing, and the power consumption of room air conditioning systems used to cool electronic equipment has also been increasing. With the continuous promotion of energy-saving and emission-reducing policies and the attention and control of society on the energy efficiency of communication rooms and data centers, the room air conditioner faces higher energy-saving requirements.
The energy-saving air conditioner used at present can not fully use an outdoor natural cold source for cooling, and can not completely meet the requirements of energy conservation of a machine room, dynamic cooling according to indoor and outdoor temperature changes, automatic energy efficiency optimization and the like.
Disclosure of Invention
The application provides an energy-saving air conditioner and a control method thereof, which are beneficial to improving the energy efficiency of the air conditioner and meeting the energy-saving requirement of a machine room.
The first aspect provides an energy-saving air conditioner, which comprises a controller, a compressor refrigeration cycle and a natural cold source cycle, wherein the controller controls the compressor refrigeration cycle and the natural cold source cycle to run independently, or the controller controls the compressor refrigeration cycle and the natural cold source cycle to be communicated into a cycle; the compressor refrigeration cycle includes: the indoor first heat exchanger, the seventh electromagnetic valve, the compressor, the first one-way valve, the outdoor first heat exchanger, the first electromagnetic valve and the expansion valve are connected in sequence; the outdoor first heat exchanger provides heat dissipation capacity required by the refrigeration cycle of the compressor; the natural cold source cycle includes: the indoor second heat exchanger, the second one-way valve, the outdoor second heat exchanger, the second electromagnetic valve and the circulating pump are sequentially connected; the indoor first heat exchanger and the indoor second heat exchanger use the same indoor fan; the outdoor first heat exchanger uses an outdoor first fan, the outdoor second heat exchanger uses an outdoor second fan, and the air inlet and the air outlet of the outdoor first heat exchanger and the outdoor second heat exchanger are not interfered with each other and operate independently; the controller is respectively and electrically connected with the compressor, the circulating pump, the indoor fan, the outdoor first fan, the outdoor second fan, the first electromagnetic valve, the second electromagnetic valve and the seventh electromagnetic valve; and a third electromagnetic valve electrically connected with the controller is connected to outlet pipes of the indoor first heat exchanger and the indoor second heat exchanger, a fourth electromagnetic valve electrically connected with the controller is connected to outlet pipes of the first one-way valve and the second one-way valve, a fifth electromagnetic valve electrically connected with the controller is connected to outlet pipes of the outdoor first heat exchanger and the outdoor second heat exchanger, and a sixth electromagnetic valve electrically connected with the controller is connected to inlet pipes of the indoor first heat exchanger and the indoor second heat exchanger.
Therefore, the controller can control the energy-saving air conditioner to operate in different three modes according to requirements, energy conservation is achieved, and improvement of the energy efficiency of the air conditioner is facilitated.
In a possible implementation manner, the energy-saving air conditioner further comprises: the first temperature sensor is used for detecting the return air temperature of the air conditioner; the second temperature sensor is used for detecting the air supply temperature of the air conditioner; the third temperature sensor is used for detecting the outdoor environment temperature; a pressure sensor for detecting a condensing pressure; and the electric quantity detection device is used for detecting the power of the air conditioner.
Therefore, the controller can control the energy-saving air conditioner to operate in different modes according to the return air temperature of the air conditioner and the outdoor environment temperature so as to realize energy conservation.
In another possible implementation, the economized air conditioner includes a first circuit for operating in a compressor cooling mode; the first electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the seventh electromagnetic valve in the first loop are opened, the second electromagnetic valve, the third electromagnetic valve and the sixth electromagnetic valve are closed, the indoor fan, the compressor, the outdoor first fan and the outdoor second fan operate, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers.
In another possible implementation manner, the energy-saving air conditioner comprises a second loop used in a natural cold source refrigeration mode; and a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve in the second loop are opened, a first electromagnetic valve and a seventh electromagnetic valve are closed, an indoor fan, a circulating pump, an outdoor first fan and an outdoor second fan run, the indoor first heat exchanger and the indoor second heat exchanger are used as evaporators, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers.
In another possible implementation, the energy saving air conditioner includes a combined cooling mode; in the combined refrigeration mode, a first electromagnetic valve, a second electromagnetic valve and a seventh electromagnetic valve are opened, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve are closed, an indoor fan, a compressor, a circulating pump, an outdoor first fan and an outdoor second fan run, and an indoor first heat exchanger is used as an evaporator of the refrigeration cycle of the compressor; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for circulating a natural cold source.
In a second aspect, a control method for an energy-saving air conditioner is provided, where the control method is used for operating the energy-saving air conditioner in any one of the possible implementations of the first aspect, and includes: acquiring the return air temperature of an air conditioner and the outdoor environment temperature; when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is smaller than a first threshold value, controlling the energy-saving air conditioner to enter a compressor refrigeration mode; in the refrigeration mode of the compressor, a first electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a seventh electromagnetic valve are opened, a second electromagnetic valve, a third electromagnetic valve and a sixth electromagnetic valve are closed, an indoor fan, the compressor, an outdoor first fan and an outdoor second fan operate, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers; the outdoor first fan and the outdoor second fan operate according to the rotating speed corresponding to the preset condensing pressure.
Therefore, when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is smaller than the first threshold value, the energy-saving air conditioner is controlled to enter a compressor refrigeration mode, and the energy efficiency of the air conditioner is improved.
In one possible implementation mode, when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is greater than or equal to a first threshold value and smaller than a second threshold value, the energy-saving air conditioner is controlled to enter a combined refrigeration mode; in the combined refrigeration mode, a first electromagnetic valve, a second electromagnetic valve and a seventh electromagnetic valve are opened, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve are closed, an indoor fan, a compressor, a circulating pump, an outdoor first fan and an outdoor second fan run at full speed, and an indoor first heat exchanger is used as an evaporator of the refrigeration cycle of the compressor; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for circulating a natural cold source.
In another possible implementation manner, when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is greater than or equal to a second threshold value, the energy-saving air conditioner is controlled to enter a natural cold source mode; in the natural cold source mode, the second electromagnetic valve, the third electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are opened, the first electromagnetic valve and the seventh electromagnetic valve are closed, the indoor fan and the circulating pump run, the outdoor first fan and the outdoor second fan run at full speed, and the compressor is closed.
Therefore, when the natural cold source can meet the cooling requirement, the outdoor first fan and the outdoor second fan run at full speed, the compressor is closed, and the natural cold source is effectively utilized to contribute to energy conservation of the air conditioner.
In another possible implementation manner, when the combined refrigeration mode is entered for the first time, the compressor refrigeration mode is started first, and a first energy efficiency coefficient of the energy-saving air conditioner is obtained; the first energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the first energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner; then simultaneously starting a compressor refrigeration cycle and a natural cold source cycle, and acquiring a second energy efficiency coefficient of the energy-saving air conditioner in a combined refrigeration mode; when the second energy efficiency coefficient is larger than the first energy efficiency coefficient, the energy-saving air conditioner keeps running in a combined refrigeration mode; and updating the first threshold when the second energy efficiency coefficient is smaller than or equal to the first energy efficiency coefficient.
Therefore, the first threshold value can be determined more accurately, and the energy-saving air conditioner can enter an operation mode with higher energy efficiency according to the return air temperature of the air conditioner and the outdoor environment temperature.
In another possible implementation manner, when the energy-saving air conditioner operates in a combined cooling mode, a first difference value between an air supply temperature set value and an air supply temperature of the air conditioner is obtained; acquiring a second difference value between the set air return temperature value and the air return temperature of the air conditioner; and when the first difference value is greater than the third threshold value and the second difference value is greater than the fourth threshold value, closing the refrigeration cycle of the compressor and operating the natural cold source mode.
In another possible implementation manner, when the energy-saving air conditioner keeps the natural cold source mode larger than the time threshold, acquiring a second threshold; the second threshold is the difference between the return air temperature of the air conditioner and the outdoor ambient temperature.
By calibrating the second threshold value through the method, the air conditioner can be controlled to enter the operation mode with higher energy efficiency more accurately.
In another possible implementation manner, the control method further includes: acquiring an energy efficiency coefficient of the energy-saving air conditioner; the energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner; and adjusting the rotating speed of the outdoor first fan and the rotating speed of the outdoor second fan according to the energy efficiency coefficient.
In a third aspect, the present application provides a chip system applied to a computer device, the chip system including one or more interface circuits and one or more processors. The interface circuit and the processor are interconnected through a line; the interface circuit is to receive signals from a memory of the computer device and to send the signals to the processor, the signals including computer instructions stored in the memory. When the processor executes the computer instructions, the computer device performs the method according to any one of the possible implementations of the second aspect to the second aspect.
In a fourth aspect, the present application provides a computer-readable storage medium comprising computer instructions that, when executed on a computer device, cause the computer device to perform the method according to any one of the possible implementations of the second aspect to the second aspect.
In a fifth aspect, the present application provides a computer program product comprising computer instructions that, when run on a computer device, cause the computer device to perform the method according to any one of the possible implementations of the second aspect to the second aspect.
It is understood that any one of the computer-readable storage medium, the computer program product, or the chip system provided above can be applied to the corresponding method provided above, and therefore, the beneficial effects achieved by the method can refer to the beneficial effects in the corresponding method, and are not described herein again.
These and other aspects of the present application will be more readily apparent from the following description.
Drawings
Fig. 1 is a schematic structural diagram of an energy-saving air conditioner to which the technical solution provided in the embodiment of the present application is applied;
fig. 2 is a schematic connection diagram of a controller 25 and other devices to which the technical solution provided by the embodiment of the present application is applied;
fig. 3 is a schematic structural diagram of a computer device according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a data collection phase in a control method of an energy-saving air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of a mode switching stage in a control method of an energy-saving air conditioner according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present application.
Detailed Description
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the embodiments of the present application, "at least one" means one or more. "plurality" means two or more.
In the embodiment of the present application, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In an embodiment of the application, a combination comprises one or more objects.
The structure of the energy-saving air conditioner provided by the embodiment of the application is shown in fig. 1. The energy saving air conditioner shown in fig. 1 includes:
the indoor first heat exchanger 1, the seventh electromagnetic valve 23, the compressor 2, the first one-way valve 3, the outdoor first heat exchanger 4, the first electromagnetic valve 5 and the expansion valve 6 are connected in sequence to form a compressor refrigeration cycle. Wherein the outdoor first heat exchanger 4 can independently provide the heat dissipation capacity required by the refrigeration cycle of the compressor.
The indoor second heat exchanger 7, the second one-way valve 8, the outdoor second heat exchanger 9, the second electromagnetic valve 10 and the circulating pump 11 are sequentially connected to form natural cold source circulation.
The indoor first heat exchanger 1 and the indoor second heat exchanger 7 use the same indoor fan 16, and the return air of the air conditioner firstly passes through the indoor second heat exchanger 7 and then passes through the indoor first heat exchanger 1. The outdoor first heat exchanger 4 uses an outdoor first fan 17, and the outdoor second heat exchanger 9 uses an outdoor second fan 18. The outdoor first heat exchanger 4 and the outdoor second heat exchanger 9 are used for air inlet, and the outdoor first heat exchanger 4 and the outdoor second heat exchanger 9 are used for air outlet without mutual interference and operate independently.
The third electromagnetic valve 12 is connected to the outlet pipes of the indoor first heat exchanger 1 and the indoor second heat exchanger 7.
The fourth solenoid valve 13 is connected to the outlet pipes of the first check valve 3 and the second check valve 8.
The fifth electromagnetic valve 14 is connected to the outlet pipes of the outdoor first heat exchanger 4 and the outdoor second heat exchanger 9.
The sixth solenoid valve 15 is connected to the inlet pipes of the indoor first heat exchanger 1 and the indoor second heat exchanger 7.
The energy-saving air conditioner also comprises a first temperature sensor 19 for detecting the return air temperature of the air conditioner.
The second temperature sensor 20 is used to detect the air conditioner supply air temperature.
The third temperature sensor 22 is used to detect the outdoor ambient temperature.
The pressure sensor 21 is used to detect the condensing pressure.
The electric quantity detection device 24 is used for detecting the air conditioner power.
The controller 25 is used to detect and control the various devices.
The compressor refrigeration cycle and the natural cold source cycle use the same refrigerant, the two cycles can independently run and can be combined into one cycle to run, and the switching of the running modes is realized through the electromagnetic valve. Through the regulation of the electromagnetic valve, the operation and the switching of the refrigeration cycle, the combined refrigeration cycle and the natural cold source cycle of the compressor can be realized.
Fig. 2 shows a connection relationship between the controller 25 and other components in the energy saving air conditioner shown in fig. 1. In fig. 2, the controller 25 is connected to the first temperature sensor 19, the second temperature sensor 20, the third temperature sensor 22, the pressure sensor 21, and the electric quantity detection device 24, respectively, and the controller 25 acquires data sent from the first temperature sensor 19, the second temperature sensor 20, the third temperature sensor 22, the pressure sensor 21, and the electric quantity detection device 24.
The controller 25 of fig. 2 is also connected to the compressor 2, the circulation pump 11, the indoor fan 16, the outdoor first fan 17, the outdoor second fan 18, the first solenoid valve 5, the second solenoid valve 10, the third solenoid valve 12, the fourth solenoid valve 13, the fifth solenoid valve 14, the sixth solenoid valve 15, and the seventh solenoid valve 23, respectively.
The controller 25 described above may be implemented by a computer device 30 as shown in fig. 3. Fig. 3 is a schematic structural diagram of a computer device to which the technical solution provided in the embodiment of the present application is applied. The technical scheme provided by the embodiment of the application is applicable to a structural schematic diagram of computer equipment. The computer device 30 shown in fig. 3 may include at least one processor 301, communication lines 302, memory 303, and at least one communication interface 304.
The processor 301 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure.
The communication link 302 may include at least one path, such as a data bus, and/or a control bus, for communicating information between the aforementioned components (e.g., the at least one processor 301, the communication link 302, the memory 303, and the at least one communication interface 304).
The communication interface 304 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as Wide Area Networks (WAN), Local Area Networks (LAN), etc.
The memory 303 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 303, which may be separate, is coupled to the processor 301 via the communication line 302. The memory 303 may also be integrated with the processor 301. The memory 303 provided by the embodiments of the present application generally includes a nonvolatile memory. The memory 303 is used for storing computer instructions for executing the present application, and is controlled by the processor 301. The processor 301 is configured to execute computer instructions stored in the memory 303, thereby implementing the methods provided by the embodiments described below.
The storage 303 includes a memory and a hard disk.
Optionally, the computer instructions in the embodiments of the present application may also be referred to as application program code or system, which is not specifically limited in the embodiments of the present application.
In one embodiment, the computer device 30 may include a plurality of processors, and each of the processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
In particular implementations, computer device 30 may also include an output device 305 and/or an input device 306, as one embodiment. The output device 305 is in communication with the processor 301 and may display information in a variety of ways. For example, the output device 305 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 306 is in communication with the processor 301 and may receive user input in a variety of ways. For example, the input device 306 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.
It should be noted that the computer device shown in fig. 3 is only an example, and does not limit the computer device to which the embodiments of the present application are applicable. In actual implementation, the computer device may include more or fewer devices or components than those shown in FIG. 3.
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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The control method of the energy-saving air conditioner provided by the embodiment of the application comprises the following steps: a data collection phase and a mode switching phase.
Fig. 4 is a schematic flow chart illustrating a data collection phase in a control method of an energy-saving air conditioner according to an embodiment of the present application. As shown in fig. 4, the method may include the steps of:
and S100, acquiring the return air temperature of the air conditioner by the first temperature sensor 19.
S101: the first temperature sensor 19 sends the air conditioning return air temperature to the controller 25.
And S102, acquiring the air conditioner air supply temperature by the second temperature sensor 20.
S103: the second temperature sensor 20 sends the air conditioner supply air temperature to the controller 25.
And S104, acquiring the outdoor environment temperature by the third temperature sensor 22.
S105: the third temperature sensor 22 sends the outdoor ambient temperature to the controller 25.
S106, the pressure sensor 21 acquires the condensation pressure.
S107: the pressure sensor 21 sends the condensing pressure to the controller 25.
S108: the electric quantity detection device 24 acquires air conditioner power.
S109: the electricity amount detection device 24 transmits the air conditioner power to the controller 25.
It should be noted that, in the embodiment of the present application, the execution sequence of S100 to S101, S102 to S103, S104 to S105, S106 to S107, and S108 to S109 is not limited, and for example, S108 to S109, then S104 to S105, then S106 to S107, then S102 to S103, and finally S100 to S101 are executed.
The above-mentioned S100 to S101, S102 to S103, S104 to S105, S106 to S107 and S108 to S109 may be actively executed according to a specific time rule after the energy saving air conditioner is powered on, or may be executed after each execution body receives a request message sent by the controller 25, which is not limited in the embodiment of the present application.
Fig. 5 is a schematic flow chart illustrating a mode switching phase in a control method of an energy-saving air conditioner according to an embodiment of the present application. As shown in fig. 5, the method may include the steps of:
and S200, acquiring the return air temperature of the air conditioner and the outdoor environment temperature by the controller 25.
Specifically, the controller 25 receives the return air temperature of the air conditioner from the first temperature sensor 19 and receives the outdoor ambient temperature from the third temperature sensor 22.
S201: the controller 25 determines whether the difference between the return air temperature of the air conditioner and the outdoor ambient temperature is less than or equal to a first threshold, if so, S202 is executed, and if not, S203 is executed.
The controller 25 starts the compressor cooling mode S202.
Specifically, after the controller 25 starts the compressor cooling mode, it sends an instruction to each device in the first circuit, and the instruction received by the electromagnetic valve is used to instruct the electromagnetic valve to open or close. And the other devices (such as the indoor fan, the compressor, the outdoor first fan and the outdoor second fan) operate according to the received instruction.
For example: the controller 25 controls the first electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the seventh electromagnetic valve in the first loop to be opened, the second electromagnetic valve, the third electromagnetic valve and the sixth electromagnetic valve to be closed, the indoor fan, the compressor, the outdoor first fan and the outdoor second fan to operate, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers; the outdoor first fan and the outdoor second fan operate according to the rotating speed corresponding to the preset condensing pressure.
The outdoor first heat exchanger and the outdoor second heat exchanger are both used as condensers in the refrigeration mode of the compressor, and the outdoor first fan and the outdoor second fan run simultaneously, so that the heat dissipation capacity is increased, the energy efficiency of the air conditioner is improved, and energy conservation is realized.
Optionally, the controller 25 obtains an energy efficiency coefficient of the energy-saving air conditioner, where the energy efficiency coefficient is used to represent the energy efficiency of the energy-saving air conditioner, and the energy efficiency coefficient is a ratio of a difference between an air return temperature of the air conditioner and an air supply temperature of the air conditioner to the air conditioner power. Then, the controller 25 adjusts the rotation speed of the outdoor first fan and the rotation speed of the outdoor second fan according to the energy efficiency coefficient.
In one example, when the compressor is not operating, the controller 25 obtains a first difference between the air conditioner return air temperature and the return air temperature set point and obtains a second difference between the air conditioner supply air temperature and the supply air temperature set point. The controller 25 determines whether the first difference is greater than or equal to a third threshold value, or whether the second difference is greater than or equal to a fourth threshold value. If so, controlling the first electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the seventh electromagnetic valve to be opened, closing the second electromagnetic valve, the third electromagnetic valve and the sixth electromagnetic valve, operating the indoor fan, the compressor, the outdoor first fan and the outdoor second fan, and closing the circulating pump; after the compressor refrigeration mode is started, the rotating speeds of the outdoor first fan and the outdoor second fan firstly operate according to the rotating speeds corresponding to the preset condensing pressure.
In another example, when the compressor is already running, it is first determined whether the circulation pump is also running, i.e. whether the combined cooling mode is running before, if the circulation pump is running, the combined cooling mode needs to be exited, the control is performed according to the above-mentioned step of starting the cooling cycle of the compressor, if the circulation pump is not running, the compressor continues to run, and the outdoor fan performs speed-up or speed-down adjustment according to the outdoor temperature change.
The example of the speed increasing or reducing regulation of the outdoor fan according to the outdoor temperature change is as follows: the controller 25 records the energy efficiency coefficient of the energy-saving air conditioner at the rotating speed corresponding to the preset condensing pressure, then, after the controller 25 controls the rotating speed to increase by 5%, the new energy efficiency coefficient of the energy-saving air conditioner at the new rotating speed is obtained and compared with the previous energy efficiency coefficient, if the rotating speed increases and the energy efficiency also increases, the speed is continuously increased, and if the rotating speed increases and the energy efficiency decreases, the last rotating speed is taken as the control rotating speed. Or, the controller 25 records the energy efficiency coefficient of the energy-saving air conditioner at the rotation speed corresponding to the preset condensing pressure, and obtains the new energy efficiency of the energy-saving air conditioner at the new rotation speed after the rotation speed is reduced by 5%. And comparing the new energy efficiency with the previous energy efficiency, if the rotating speed is reduced and the energy efficiency is increased, continuing to try to reduce the speed, and if the rotating speed is reduced and the energy efficiency is reduced or the condensing pressure is greater than 'the condensing pressure preset value +5 bar', taking the last rotating speed as the control rotating speed.
S203: the controller 25 determines whether the difference between the return air temperature of the air conditioner and the outdoor ambient temperature is less than a second threshold. If yes, go to S204, otherwise go to S205.
At S204, controller 25 initiates a combined cooling mode.
Specifically, the controller 25 controls the first electromagnetic valve, the second electromagnetic valve and the seventh electromagnetic valve to be opened, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve to be closed, the indoor fan, the compressor, the circulating pump, the outdoor first fan and the outdoor second fan to run at full speed, and the indoor first heat exchanger is used as an evaporator of the refrigeration cycle of the compressor; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for circulating a natural cold source.
It should be noted that, when entering the combined refrigeration mode for the first time, the controller 25 starts the compressor refrigeration mode and obtains the first energy efficiency coefficient of the energy-saving air conditioner; the first energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the first energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner; then, the controller 25 starts the compressor cycle and the natural cold source cycle at the same time, and obtains a second energy efficiency coefficient of the energy-saving air conditioner in the combined refrigeration mode; when the second energy efficiency coefficient is larger than the first energy efficiency coefficient, the energy-saving air conditioner keeps running in a combined refrigeration mode; and updating the first threshold when the second energy efficiency coefficient is smaller than or equal to the first energy efficiency coefficient. And re-acquiring the return air temperature and the outdoor environment temperature of the air conditioner, judging which refrigeration mode the energy-saving air conditioner enters according to the updated first threshold, re-acquiring a new second energy efficiency coefficient when entering the combined refrigeration mode under the updated first threshold, and adjusting the first threshold until the new second energy efficiency coefficient is larger than the first energy efficiency coefficient.
When the energy-saving air conditioner operates in a combined refrigeration mode, acquiring a third difference value between the air supply temperature set value and the air supply temperature of the air conditioner; acquiring a fourth difference value between the set value of the return air temperature and the return air temperature of the air conditioner; and when the third difference value is greater than the fifth threshold value and the fourth difference value is greater than the sixth threshold value, closing the refrigeration cycle of the compressor and operating the natural cold source mode.
And when the energy-saving air conditioner keeps the natural cold source mode to be larger than the time threshold, acquiring a second threshold, wherein the second threshold is the difference value between the current air-conditioner return air temperature and the outdoor environment temperature.
The compressor refrigeration cycle and the natural cold source cycle do not interfere with each other in the combined refrigeration mode, and the natural cold source cycle energy efficiency is higher than that of the compressor refrigeration cycle, so that the overall energy efficiency is improved, and energy conservation is realized.
S205: the controller 25 initiates the natural cold source mode.
Specifically, the controller 25 controls the second, third, fifth and sixth solenoid valves to be opened, the first and seventh solenoid valves to be closed, the indoor fan and the circulation pump to operate, and the outdoor first fan and the outdoor second fan to operate at full speed to close the compressor.
And in the natural cold source mode, the indoor first heat exchanger and the indoor second heat exchanger are used as evaporators, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers. According to the mode, the first indoor heat exchanger, the first outdoor heat exchanger and the first outdoor fan which circulate through the compressor are also put into the natural cold source circulation, so that a natural cold source can be obtained to the maximum extent, the compressor is prevented from being started, and energy conservation is realized.
In the embodiment of the application, the compressor refrigeration cycle and the natural cold source of the energy-saving air conditioner use the same refrigerant circularly, the two cycles can be operated independently, and can also be combined into a cycle operation, so that the energy-saving air conditioner can be determined to enter which refrigeration mode according to the return air temperature and the outdoor environment temperature of the air conditioner, and the energy efficiency of the air conditioner is improved.
The scheme provided by the embodiment of the application is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the exemplary method steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the application, the energy-saving air conditioner may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
Fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present disclosure. The controller 50 may be used to perform the functions performed by the controller in any of the above embodiments (e.g., the embodiments shown in fig. 3 and 4). The controller 50 includes: an acquisition module 501 and a control module 502. The acquiring module 501 is configured to acquire an air-conditioning return air temperature and an outdoor environment temperature; the control module 502 is used for controlling the energy-saving air conditioner to enter a compressor refrigeration mode when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is smaller than a first threshold value; in the refrigeration mode of the compressor, a first electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a seventh electromagnetic valve are opened, a second electromagnetic valve, a third electromagnetic valve and a sixth electromagnetic valve are closed, an indoor fan, the compressor, an outdoor first fan and an outdoor second fan operate, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers; the outdoor first fan and the outdoor second fan operate according to the rotating speed corresponding to the preset condensing pressure. For example, in conjunction with fig. 3, the above-mentioned obtaining module 501 may be configured to perform the receiving steps in S101, S103, S105, S107, and S109, and in conjunction with fig. 4, the obtaining module 501 may be configured to perform S200. The control module 502 may be configured to perform S201-S205.
Optionally, the control module 502 is further configured to control the energy-saving air conditioner to enter a combined cooling mode when a difference between the return air temperature of the air conditioner and the outdoor ambient temperature is greater than or equal to a first threshold and is less than a second threshold; in the combined refrigeration mode, a first electromagnetic valve, a second electromagnetic valve and a seventh electromagnetic valve are opened, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve are closed, an indoor fan, a compressor, a circulating pump, an outdoor first fan and an outdoor second fan run at full speed, and an indoor first heat exchanger is used as an evaporator of the refrigeration cycle of the compressor; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for circulating a natural cold source.
Optionally, the control module 502 is further configured to control the energy-saving air conditioner to enter a natural cold source mode when a difference between the return air temperature of the air conditioner and the outdoor environment temperature is greater than or equal to a second threshold; in the natural cold source mode, the second electromagnetic valve, the third electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are opened, the first electromagnetic valve and the seventh electromagnetic valve are closed, the indoor fan and the circulating pump run, the outdoor first fan and the outdoor second fan run at full speed, and the compressor is closed.
Optionally, the control module 502 is further configured to, when entering the combined refrigeration mode for the first time, start the compressor refrigeration mode and obtain a first energy efficiency coefficient of the energy-saving air conditioner; the first energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the first energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner; then simultaneously starting a compressor refrigeration cycle and a natural cold source cycle, and acquiring a second energy efficiency coefficient of the energy-saving air conditioner in a combined refrigeration mode; when the second energy efficiency coefficient is larger than the first energy efficiency coefficient, the energy-saving air conditioner keeps running in a combined refrigeration mode; and updating the first threshold when the second energy efficiency coefficient is smaller than or equal to the first energy efficiency coefficient.
Optionally, the control module 502 is further configured to, when the energy-saving air conditioner operates in the combined cooling mode, obtain a first difference between a set value of an air supply temperature and an air supply temperature of the air conditioner; acquiring a second difference value between the set air return temperature value and the air return temperature of the air conditioner; and when the first difference value is greater than the third threshold value and the second difference value is greater than the fourth threshold value, closing the refrigeration cycle of the compressor and operating the natural cold source mode.
Optionally, the control module 502 is further configured to obtain a second threshold when the energy-saving air conditioner keeps the natural cold source mode greater than the time threshold; the second threshold is the difference between the return air temperature of the air conditioner and the outdoor ambient temperature.
Optionally, the control module 502 is further configured to obtain an energy efficiency coefficient of the energy-saving air conditioner; the energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner; and adjusting the rotating speed of the outdoor first fan and the rotating speed of the outdoor second fan according to the energy efficiency coefficient.
In one example, referring to fig. 3, the receiving function of the obtaining module 501 may be implemented by the communication interface 304 in fig. 3. The processing function of the obtaining module 501 and the control module 502 can be implemented by the processor 301 in fig. 3 calling a computer program stored in the memory 303.
For the detailed description of the above alternative modes, reference is made to the foregoing method embodiments, which are not described herein again. In addition, for any explanation and beneficial effect description of the controller, reference may be made to the corresponding method embodiment, and details are not repeated.
It should be noted that the actions correspondingly performed by the modules are merely specific examples, and the actions actually performed by the units refer to the actions or steps mentioned in the description of the embodiments based on fig. 4 and fig. 5.
An embodiment of the present application further provides a computer device, including: a memory and a processor; the memory is for storing a computer program, and the processor is for invoking the computer program to perform the actions or steps mentioned in any of the embodiments provided above.
Embodiments of the present application also provide a computer-readable storage medium, which stores a computer program, and when the computer program runs on a computer, the computer program causes the computer to execute the actions or steps mentioned in any of the embodiments provided above.
The embodiment of the application also provides a chip. Integrated with circuitry and one or more interfaces for implementing the functions of controller 50 described above. Optionally, the functions supported by the chip may include processing actions in the embodiments described based on fig. 3 and fig. 4, which are not described herein again. Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be implemented by a program instructing the associated hardware to perform the steps. The program may be stored in a computer-readable storage medium. The above-mentioned storage medium may be a read-only memory, a random access memory, or the like. The processing unit or processor may be a central processing unit, a general purpose processor, an Application Specific Integrated Circuit (ASIC), a microprocessor (DSP), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.
The embodiments of the present application also provide a computer program product containing instructions, which when executed on a computer, cause the computer to execute any one of the methods in the above embodiments. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It should be noted that the above devices for storing computer instructions or computer programs provided in the embodiments of the present application, such as, but not limited to, the above memories, computer readable storage media, communication chips, and the like, are all nonvolatile (non-volatile).
Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the present application has been described in conjunction with specific features and embodiments thereof, various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application.
Claims (14)
1. An energy-saving air conditioner is characterized by comprising a controller, a compressor refrigeration cycle and a natural cold source cycle, wherein the controller controls the compressor refrigeration cycle and the natural cold source cycle to run independently, or the controller controls the compressor refrigeration cycle and the natural cold source cycle to be communicated into a cycle; the compressor refrigeration cycle and the natural cold source cycle use the same refrigerant, and the switching of the operation modes is realized through an electromagnetic valve;
the compressor refrigeration cycle includes: the indoor first heat exchanger, the seventh electromagnetic valve, the compressor, the first one-way valve, the outdoor first heat exchanger, the first electromagnetic valve and the expansion valve are connected in sequence; wherein the outdoor first heat exchanger provides heat dissipation capacity required by a refrigeration cycle of the compressor;
the natural cold source cycle includes: the indoor second heat exchanger, the second one-way valve, the outdoor second heat exchanger, the second electromagnetic valve and the circulating pump are sequentially connected;
the indoor first heat exchanger and the indoor second heat exchanger use the same indoor fan; the outdoor first heat exchanger uses an outdoor first fan, the outdoor second heat exchanger uses an outdoor second fan, and the air inlet and the air outlet of the outdoor first heat exchanger and the outdoor second heat exchanger are not interfered with each other and operate independently;
the controller is respectively electrically connected with the compressor, the circulating pump, the indoor fan, the outdoor first fan, the outdoor second fan, the first electromagnetic valve, the second electromagnetic valve and the seventh electromagnetic valve;
a third electromagnetic valve electrically connected with the controller is connected to outlet pipes of the indoor first heat exchanger and the indoor second heat exchanger, a fourth electromagnetic valve electrically connected with the controller is connected to outlet pipes of the first one-way valve and the second one-way valve, a fifth electromagnetic valve electrically connected with the controller is connected to outlet pipes of the outdoor first heat exchanger and the outdoor second heat exchanger, and a sixth electromagnetic valve electrically connected with the controller is connected to inlet pipes of the indoor first heat exchanger and the indoor second heat exchanger.
2. The energy saving air conditioner of claim 1, further comprising, connected to the controller:
the first temperature sensor is used for detecting the return air temperature of the air conditioner;
the second temperature sensor is used for detecting the air supply temperature of the air conditioner;
the third temperature sensor is used for detecting the outdoor environment temperature;
a pressure sensor for detecting a condensing pressure;
and the electric quantity detection device is used for detecting the power of the air conditioner.
3. An energy saving air conditioner according to claim 1 or 2, characterized by comprising a first circuit for operating in a compressor cooling mode; the first solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the seventh solenoid valve in the first circuit are opened, the second solenoid valve, the third solenoid valve and the sixth solenoid valve are closed, the indoor fan, the compressor, the outdoor first fan and the outdoor second fan operate, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers.
4. The energy saving air conditioner as claimed in claim 1 or 2, comprising a second loop for a natural cold source in a cooling mode; in the second loop, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are opened, the first electromagnetic valve and the seventh electromagnetic valve are closed, the indoor fan, the circulating pump, the outdoor first fan and the outdoor second fan are operated, the indoor first heat exchanger and the indoor second heat exchanger are used as evaporators, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers.
5. The energy saving air conditioner according to claim 1 or 2, comprising a combined cooling mode; in the combined cooling mode, the first solenoid valve, the second solenoid valve, and the seventh solenoid valve are opened, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, and the sixth solenoid valve are closed, the indoor fan, the compressor, the circulation pump, the outdoor first fan, and the outdoor second fan are operated, and the indoor first heat exchanger serves as an evaporator of the compressor cooling cycle; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for the natural cold source to circulate.
6. A control method of an energy saving air conditioner for controlling the operation of the energy saving air conditioner according to claim 1, wherein the control method comprises:
acquiring the return air temperature of an air conditioner and the outdoor environment temperature;
when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is smaller than a first threshold value, controlling the energy-saving air conditioner to enter a compressor refrigeration mode;
in the compressor cooling mode, the first solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the seventh solenoid valve are opened, the second solenoid valve, the third solenoid valve and the sixth solenoid valve are closed, the indoor fan, the compressor, the outdoor first fan and the outdoor second fan are operated, and the outdoor first heat exchanger and the outdoor second heat exchanger are used as condensers; the outdoor first fan and the outdoor second fan operate according to the rotating speed corresponding to the preset condensing pressure.
7. The control method according to claim 6, characterized by comprising:
when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is greater than or equal to the first threshold value and smaller than a second threshold value, controlling the energy-saving air conditioner to enter a combined refrigeration mode;
in the combined cooling mode, the first solenoid valve, the second solenoid valve and the seventh solenoid valve are opened, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the sixth solenoid valve are closed, the indoor fan, the compressor, the circulation pump, the outdoor first fan and the outdoor second fan are operated at full speed, and the indoor first heat exchanger is used as an evaporator of the compressor cooling cycle; the outdoor first heat exchanger is used as a condenser of the refrigeration cycle of the compressor, and the indoor second heat exchanger is used as an evaporator of the natural cold source cycle; the outdoor second heat exchanger is used as a condenser for the natural cold source to circulate.
8. The control method according to claim 6, characterized by comprising:
when the difference value between the return air temperature of the air conditioner and the outdoor environment temperature is larger than or equal to a second threshold value, controlling the energy-saving air conditioner to enter a natural cold source mode; in the natural cold source mode, the second electromagnetic valve, the third electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are opened, the first electromagnetic valve and the seventh electromagnetic valve are closed, the indoor fan and the circulating pump operate, the outdoor first fan and the outdoor second fan operate at full speed, and the compressor is closed.
9. The control method according to claim 7, characterized by further comprising:
when the combined refrigeration mode is entered for the first time, firstly, a compressor refrigeration mode is started, and a first energy efficiency coefficient of the energy-saving air conditioner is obtained; the first energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the first energy efficiency coefficient is the ratio of the difference value of the air return temperature of the air conditioner and the air supply temperature of the air conditioner to the power of the air conditioner;
then simultaneously starting a compressor refrigeration cycle and a natural cold source cycle, and acquiring a second energy efficiency coefficient of the energy-saving air conditioner in the combined refrigeration mode;
when the second energy efficiency coefficient is larger than the first energy efficiency coefficient, the energy-saving air conditioner keeps running in the combined refrigeration mode;
and when the second energy efficiency coefficient is smaller than or equal to the first energy efficiency coefficient, updating the first threshold.
10. The control method according to claim 9, characterized by further comprising:
when the energy-saving air conditioner operates in the combined refrigeration mode, acquiring a first difference value between the air supply temperature set value and the air supply temperature of the air conditioner;
acquiring a second difference value between the set air return temperature value and the air-conditioning air return temperature;
and when the first difference value is greater than a third threshold value and the second difference value is greater than a fourth threshold value, closing the refrigeration cycle of the compressor and operating a natural cold source mode.
11. The control method according to claim 10, characterized by further comprising:
when the energy-saving air conditioner keeps the natural cold source mode to be larger than a time threshold, acquiring the second threshold; the second threshold is the difference between the air-conditioning return air temperature and the outdoor environment temperature.
12. The control method according to any one of claims 6 to 11, characterized by further comprising:
acquiring an energy efficiency coefficient of the energy-saving air conditioner; the energy efficiency coefficient is used for representing the energy efficiency of the energy-saving air conditioner; the energy efficiency coefficient is the ratio of the difference value of the air return temperature and the air supply temperature of the air conditioner to the air conditioner power;
and adjusting the rotating speed of the outdoor first fan and the rotating speed of the outdoor second fan according to the energy efficiency coefficient.
13. A computer device, comprising: a memory for storing
A computer program for execution by a processor to perform the method of any one of claims 6-12.
14. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any of claims 6-12.
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| CN115628523A (en) * | 2022-11-08 | 2023-01-20 | 中国联合网络通信集团有限公司 | Air conditioner control method, device, equipment and storage medium |
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| EP0937950B1 (en) * | 1998-02-23 | 2004-10-20 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner |
| JP2000320913A (en) * | 1999-05-07 | 2000-11-24 | Hitachi Air Conditioning System Co Ltd | Refrigerant natural circulation jointly used air conditioner and its operation control method |
| CN101245955A (en) * | 2008-03-17 | 2008-08-20 | 时代嘉华（中国）科技有限公司 | Coolant natural circulation type unit air-conditioning set |
| CN101520219A (en) * | 2009-04-03 | 2009-09-02 | 清华大学 | All-year cold supply chiller with natural cooling function |
| CN101694311B (en) * | 2009-10-23 | 2011-11-30 | 清华大学 | Multi-connected air conditioning unit with natural cooling function and liquid supplied by liquid pump |
| CN201527055U (en) * | 2009-10-23 | 2010-07-14 | 清华大学 | Air handling device with natural heat supply and humidity control |
| CN102777981B (en) * | 2012-08-10 | 2014-04-30 | 广东吉荣空调有限公司 | Energy-saving air-conditioning system used for communication base station and capable of supplying air in object-oriented mode and running method thereof |
| CN106855279B (en) * | 2015-12-08 | 2022-10-25 | 维谛技术有限公司 | Air conditioning system, refrigeration control method and device |
| TWI599713B (en) * | 2016-07-19 | 2017-09-21 | Chuan Sheng Chen | To the semiconductor as the core of the cold and warm cycle machine |
| CN109114842A (en) * | 2018-09-27 | 2019-01-01 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of coupled mode computer-room air conditioning system and its control method |
| CN210663251U (en) * | 2019-09-03 | 2020-06-02 | 中国联合网络通信集团有限公司 | Refrigeration and waste heat recovery device |
| CN211822913U (en) * | 2019-09-18 | 2020-10-30 | 盾安环境技术有限公司 | Air conditioning system for machine room |
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