CN111486507A - Air conditioning system and operation control method thereof - Google Patents
Air conditioning system and operation control method thereof Download PDFInfo
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- CN111486507A CN111486507A CN202010351362.0A CN202010351362A CN111486507A CN 111486507 A CN111486507 A CN 111486507A CN 202010351362 A CN202010351362 A CN 202010351362A CN 111486507 A CN111486507 A CN 111486507A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning system and an air conditioning system operation control method, and relates to the technical field of air conditioning control. The air conditioning system comprises an outdoor unit, an indoor unit, a cold energy storage device and a control assembly, wherein the indoor unit and the cold energy storage device are respectively connected with the outdoor unit, so that the control assembly can control the outdoor unit to selectively provide cold energy to the indoor unit and the cold energy storage device, the cold energy storage device can store cold energy, and the cold energy storage device is connected to the indoor unit, so that the control assembly can control the cold energy storage device to provide cold energy to the indoor unit when the outdoor unit cannot provide cold energy to the indoor unit. The operation control method of the air conditioning system is based on the air conditioning system, and when the outdoor unit cannot provide cooling capacity for the indoor unit, the cooling capacity storage device is controlled to provide cooling capacity for the indoor unit. According to the air conditioning system and the operation control method of the air conditioning system, when the outdoor unit cannot provide cooling capacity for the indoor unit, the interruption of cooling capacity can be avoided, and the user experience is effectively improved.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner system and an air conditioner system operation control method.
Background
When the air conditioner is in failure or overhauls the air conditioner, the outdoor unit cannot operate and cannot provide cold energy for the indoor unit, so that the indoor unit cannot supply cold to a user, the cold supply is interrupted, and the user experience is influenced.
Disclosure of Invention
The invention solves the problem of how to avoid the interruption of cold supply when the outdoor unit of the air conditioning system can not provide cold quantity to the indoor unit, thereby improving the user experience.
In order to solve the above problems, the technical solution of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an air conditioning system, including an outdoor unit, an indoor unit, a refrigeration capacity storage unit, and a control unit, where the indoor unit and the refrigeration capacity storage unit are respectively connected to the outdoor unit, so that the control unit can control the outdoor unit to selectively provide refrigeration capacity to the indoor unit and the refrigeration capacity storage unit, the refrigeration capacity storage unit can store refrigeration capacity, and the refrigeration capacity storage unit is connected to the indoor unit, so that the control unit controls the refrigeration capacity storage unit to provide refrigeration capacity to the indoor unit when the outdoor unit cannot provide refrigeration capacity to the indoor unit.
Because the outdoor unit is simultaneously connected with the indoor unit and the cold energy storage device, under the control of the control component, the outdoor unit can provide cold energy for the indoor unit to supply cold energy to users or provide cold energy for the cold energy storage device to store the cold energy. The control component can control the cooling capacity storage to provide cooling capacity for the indoor unit under the condition that the outdoor unit cannot provide cooling capacity for the indoor unit. The cold storage device is used as a standby cold source of the indoor unit, and when the outdoor unit stops working, the indoor unit does not interrupt cold supply, so that the user experience is effectively improved.
In an alternative embodiment, the control assembly includes a controller and first, second, and third valves in communication with the controller, respectively;
the first end of the first valve is connected with the first end of the outdoor unit, the second end of the first valve is connected with the first end of the second valve and the first end of the third valve, the second end of the second valve is connected with the first end of the indoor unit, the second end of the indoor unit is connected with the second end of the outdoor unit, the second end of the third valve is connected with the first end of the cold energy storage device, and the second end of the cold energy storage device is connected with the second end of the outdoor unit;
the controller is used for controlling the opening and closing of the first valve, the second valve and the third valve; when the first valve and the second valve are controlled to be opened and the third valve is controlled to be closed, the outdoor unit can provide cold energy for the indoor unit; when the first valve and the third valve are controlled to be opened and the second valve is controlled to be closed, the outdoor unit can provide cold energy for the cold energy storage device to store the cold energy; when the second valve and the third valve are controlled to be opened and the first valve is controlled to be closed, the cold energy storage device can provide cold energy for the indoor unit.
The on-off of the outdoor unit is realized by controlling the on-off of the first valve, the on-off of the indoor unit and the outdoor unit is realized by controlling the on-off of the second valve, and the on-off of the cold energy storage device and the outdoor unit is realized by controlling the on-off of the third valve. The controller simultaneously controls the opening and closing of the first valve, the second valve and the third valve, and the air conditioning system can have a common mode in which the outdoor unit provides cold energy to the indoor unit, an energy storage mode in which the outdoor unit provides cold energy to the cold energy storage device, and an energy supply mode in which the cold energy storage device provides cold energy to the indoor unit.
In an alternative embodiment, the control assembly comprises a fourth valve, a fifth valve and a sixth valve which are communicated with the controller, wherein the first end of the fourth valve is connected to the second end of the outdoor unit, the second end of the fourth valve is connected to the first end of the fifth valve and the first end of the sixth valve, the second end of the fifth valve is connected to the second end of the indoor unit, and the second end of the sixth valve is connected to the second end of the cold energy storage device;
when the first valve, the second valve, the fifth valve and the fourth valve are controlled to be opened and the third valve and the sixth valve are controlled to be closed, the outdoor unit can provide cooling capacity for the indoor unit; when the first valve, the third valve, the sixth valve and the fourth valve are controlled to be opened and the second valve and the fifth valve are controlled to be closed, the outdoor unit can provide cold energy for the cold energy storage device to store the cold energy; when the second valve, the third valve, the fifth valve and the sixth valve are controlled to be opened and the first valve and the fourth valve are controlled to be closed, the cold energy storage device can provide cold energy for the indoor unit.
The first valve and the fourth valve are arranged at two ends of the outdoor unit, the second valve and the fifth valve are arranged at two ends of the indoor unit, and the third valve and the sixth valve are arranged at two ends of the cold energy storage device, so that the inlet and the outlet of each device are provided with valves, and the control process of the air conditioning system is more stable and reliable in a common mode, an energy storage mode or an energy supply mode.
In an alternative embodiment, the air conditioning system includes a solar power generation assembly electrically connected to the outdoor unit to supply power to the outdoor unit, and a refrigerant transport pump connected between the refrigeration storage device and the indoor unit, the refrigerant transport pump being configured to transport refrigeration from the refrigeration storage device to the indoor unit, the solar power generation assembly being electrically connected to the refrigerant transport pump to supply power to the refrigerant transport pump.
The cold storage device and the indoor unit are used for conveying cold through the refrigerant conveying pump, and the outdoor unit and the refrigerant conveying pump are respectively electrically connected with the solar power generation assembly so as to utilize electric energy generated by solar energy, so that the solar energy-saving and environment-friendly solar energy-saving device is energy-saving and environment-friendly.
In an alternative embodiment, the outdoor unit selectively draws power from one of the utility power and the solar power generation assembly.
The outdoor unit can be supplied with power by solar energy or commercial power, and normal work of the outdoor unit can be effectively guaranteed even if the solar energy is insufficient.
In a second aspect, an embodiment of the present invention provides an air conditioning system operation control method, based on the air conditioning system, including:
and controlling the cold energy storage device to provide cold energy to the indoor unit when the outdoor unit cannot provide cold energy to the indoor unit.
The cold storage device can be used as a standby cold source to provide cold for the indoor unit when the outdoor unit cannot provide cold for the indoor unit, so that the cold supply continuity for users is ensured, and the user experience is improved.
In an alternative embodiment, the step of controlling the cooling capacity storage to supply the cooling capacity to the indoor unit when the outdoor unit cannot supply the cooling capacity to the indoor unit includes:
judging whether the air conditioning system is in a maintenance state, if the air conditioning system is in the maintenance state, executing the step of controlling a cold storage device to provide cold energy to the indoor unit when the outdoor unit cannot provide the cold energy to the indoor unit;
or judging whether the air conditioning system is in a fault state, and if the air conditioning system is in the fault state, executing the step of controlling the cold storage device to provide cold to the indoor unit when the outdoor unit cannot supply cold to the indoor unit.
If the air conditioning system is in the overhaul state or the fault state, the outdoor unit cannot provide cold energy for the indoor unit, and at the moment, the cold energy storage device is controlled to provide cold energy for the indoor unit, so that the air conditioner can still supply cold to a user in the overhaul state or the fault state, and the user experience is improved.
In an alternative embodiment, the step of "determining whether the air conditioning system is in a failure state" includes:
and judging whether the air conditioning system is frequently started or not, and if so, judging that the air conditioning system is in a fault state.
In order to avoid unit faults caused by frequent starting, once the air conditioning system is detected to be frequently started, the system can judge that the air conditioning system is in a fault state, and then the cooling capacity storage device is controlled to provide cooling capacity for the indoor unit, so that the outdoor unit is not started any more, and the influence on the service life of the outdoor unit is reduced.
In an optional embodiment, before the step of "determining whether the air conditioning system is in the fault state", the method further includes:
and judging whether the cold energy storage in the cold energy storage device is sufficient, and if the cold energy storage is sufficient, executing the step of judging whether the air-conditioning system is in a fault state.
The cold storage condition in the cold storage is judged before the air conditioning system is judged to be in the fault state. If the cold quantity is stored sufficiently, the cold quantity requirement in the energy supply mode can be met, and whether the air-conditioning system is in a fault state is judged, so that the follow-up cold quantity storage device can normally provide the cold quantity for the indoor unit.
In an optional implementation mode, if the cold energy storage is insufficient, whether the sunlight is sufficient is judged;
if the sunlight is sufficient, the solar energy is utilized to supply power to the outdoor unit so as to generate cold energy, and then the outdoor unit is controlled to provide the cold energy to the cold energy storage device;
if the sunlight is insufficient, the commercial power is used for supplying power to the outdoor unit to generate cold energy, and then the outdoor unit is controlled to provide the cold energy to the cold energy storage device.
If the cold storage in the cold storage device is insufficient, the energy supply mode needs to be started to generate cold by the outdoor unit so as to further provide the cold to the cold storage device. When the outdoor unit generates cold, solar power generation can be selected as power, commercial power can also be selected as power, and the outdoor unit can be specifically selected according to the current sunlight condition, so that the energy is saved, the environment is protected, and the reliable operation of an air conditioning system is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a control assembly according to an embodiment of the present invention;
fig. 3 is a flowchart of an operation control method of an air conditioning system according to an embodiment of the present invention.
Description of reference numerals:
100-an air conditioning system; 110-an outdoor unit; 112-a compressor; 114-a first heat exchange circuit; 120-indoor unit; 130-cold storage; 133-refrigerant transport pump; 140-a control component; 141-a first valve; 142-a controller; 143-a second valve; 144-electronic expansion valve; 145-a third valve; 146-a fourth valve; 147-a fifth valve; 149-a sixth valve; 160-solar power generation assembly.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1 and 2, the air conditioning system 100 includes an outdoor unit 110, an indoor unit 120, a cooling capacity storage 130, and a control assembly 140. The indoor unit 120 and the cooling capacity storage 130 are connected to the outdoor unit 110, respectively, so that the control unit 140 can control the outdoor unit 110 to selectively supply cooling capacity to the indoor unit 120 and the cooling capacity storage 130. The cold storage 130 is capable of storing cold. The cooling capacity storage 130 is connected to the indoor unit 120 so that the control unit 140 controls the cooling capacity storage 130 to supply cooling capacity to the indoor unit 120 when the outdoor unit 110 cannot supply cooling capacity to the indoor unit 120.
The outdoor unit 110 is provided with a compressor 112 and a first heat exchange pipeline 114, the compressor 112 is configured to compress a refrigerant into a high-temperature high-pressure gas, the high-temperature high-pressure gaseous refrigerant enters the first heat exchange pipeline 114 to dissipate heat to be condensed into a high-pressure liquid, and the refrigerant is further cooled to become a low-temperature low-pressure gas-liquid mixture.
The outdoor unit 110 can supply cooling capacity to the indoor units 120 to cool users. Specifically, the indoor unit 120 is provided therein with a second heat exchange pipeline, and when the second heat exchange pipeline is communicated with the first heat exchange pipeline 114, the low-temperature and low-pressure gas-liquid mixed refrigerant from the outdoor unit 110 enters the second heat exchange pipeline and then absorbs heat in indoor air, thereby supplying cold to a user.
The outdoor unit 110 can supply cold to the cold storage 130 to store the cold. Specifically, in the present embodiment, the coldness storage 130 includes a coil pipe and a temperature keeping device provided outside the coil pipe. When the coil is communicated with the first heat exchange line 114, the refrigerant in a low-temperature and low-pressure gas-liquid mixed state from the outdoor unit 110 can enter the coil. The heat preservation device comprises a phase-change material and a heat preservation plate, the coil pipe is arranged in the heat preservation plate, and the phase-change material is arranged near the coil pipe, so that the loss of cold energy is reduced as much as possible, and cold accumulation is better realized. Under the action of the heat-insulating device, the cold energy storage device 130 can store the cold energy carried by the refrigerant in the coil. Therefore, when the outdoor unit 110 cannot supply cooling capacity to the indoor units 120, the cooling capacity storage 130 can supply a cooling medium carrying cooling capacity to the indoor units 120 as a backup cooling capacity source so that the indoor units 120 can normally supply cooling capacity to users. In addition, when the air conditioner is installed, the cooling capacity storage 130 may be completely independent of the outdoor unit 110 and the indoor unit 120, may be installed in the outdoor unit 110 or in the indoor unit 120, and only needs to be able to perform a function of storing cooling capacity and supplying cooling capacity to a specific device.
The control assembly 140 includes a controller 142 and first, second, and third valves 141, 143, 145 in communication with the controller 142, respectively. "communication" means using a wired connection or using a wireless connection to transmit signals. A first end of the first valve 141 is connected to a first end of the outdoor unit 110, and a second end of the first valve 141 is connected to both a first end of the second valve 143 and a first end of the third valve 145. The second end of the second valve 143 is connected to the first end of the indoor unit 120, and the second end of the indoor unit 120 is connected to the second end of the outdoor unit 110. The second end of the third valve 145 is connected to the first end of the cold storage 130, and the second end of the cold storage 130 is connected to the second end of the outdoor unit 110.
Here, for the first, second, and third valves 141, 143, and 145, the first end of the valve refers to one of the inlet and the outlet of the valve, and the second end of the valve refers to the other of the inlet and the outlet of the valve.
Since the dual functions of cooling and heating of the air conditioning system 100 can be achieved by changing the refrigerant circulation direction between the outdoor unit 110 and the indoor unit 120, in the present embodiment, the respective inlets and outlets of the outdoor unit 110 and the indoor unit 120 are changed in position according to the cooling or heating of the air conditioner. Accordingly, the first end of the outdoor unit 110 refers to one of an inlet and an outlet of the first heat exchange pipe 114 in the outdoor unit 110, and the second end of the outdoor unit 110 refers to the other of the inlet and the outlet of the first heat exchange pipe 114. The first end of the indoor unit 120 refers to one of an inlet and an outlet of the second heat-exchange pipe in the indoor unit 120, and the second end of the indoor unit 120 refers to the other of the inlet and the outlet of the second heat-exchange pipe. Since the cold storage 130 inlet and outlet may also change position in different operating modes, the first end of the cold storage 130 refers to one of the inlet and outlet of the coil in the cold storage 130 and the second end of the cold storage 130 refers to the other of the inlet and outlet of the coil.
The controller 142 is used for controlling the opening and closing of the first valve 141, the second valve 143, and the third valve 145. When the first and second valves 141 and 143 are controlled to be opened and the third valve 145 is controlled to be closed, the outdoor unit 110 can supply cooling energy to the indoor unit 120, and the air conditioning system 100 is in the normal mode. When the first valve 141 and the third valve 145 are controlled to be opened and the second valve 143 is controlled to be closed, the outdoor unit 110 can provide the cooling capacity to the cooling capacity storage 130 to store the cooling capacity, and the air conditioning system 100 is in the energy storage mode. When the second valve 143 and the third valve 145 are controlled to be opened and the first valve 141 is controlled to be closed, the cooling energy storage 130 can supply cooling energy to the indoor unit 120, and the air conditioning system 100 is in the power supply mode. In this way, by controlling the opening and closing of the first valve 141, the second valve 143, and the third valve 145, the connection and disconnection of the first heat exchange line 114 and the second heat exchange line, the connection and disconnection of the first heat exchange line 114 and the coil, and the connection and disconnection of the coil and the second heat exchange line can be controlled, so as to switch different operation modes under different conditions of the air conditioning system 100.
In this embodiment, to further improve the reliability of the control assembly 140 and the stability of the control process, the control assembly 140 further includes a fourth valve 146, a fifth valve 147, and a sixth valve 149 in communication with the controller 142. A first end of the fourth valve 146 is connected to a second end of the outdoor unit 110, and a second end of the fourth valve 146 is connected to both a first end of the fifth valve 147 and a first end of the sixth valve 149. The second end of the fifth valve 147 is connected to the second end of the indoor unit 120 and the second end of the sixth valve 149 is connected to the second end of the cold storage 130.
That is, in this embodiment, two ends of the outdoor unit 110 are respectively connected to the first valve 141 and the fourth valve 146, and the first valve 141 and the fourth valve 146 are used for jointly controlling the on-off of the first heat exchange pipeline 114 in the outdoor unit 110. The two ends of the indoor unit 120 are respectively connected to a second valve 143 and a fifth valve 147, the second end of the indoor unit 120 is connected to the second end of the outdoor unit 110 through the fifth valve 147, and the second valve 143 and the fifth valve 147 are used to jointly control the on-off of the second heat exchange pipeline. The third valve 145 and the sixth valve 149 are respectively connected to both ends of the cold energy storage 130, the second end of the cold energy storage 130 is connected to the second end of the outdoor unit 110 through the sixth valve 149, and the third valve 145 and the sixth valve 149 are used for jointly controlling the on-off of the coil. Accordingly, valves are provided at the inlet and outlet of the outdoor unit 110, the indoor unit 120, and the cold storage 130, so that the control of the air conditioning system 100 is more reliable, and it is also advantageous to protect each device better.
When the first, second, fifth, and fourth valves 141, 143, 147, and 146 are controlled to be opened and the third and sixth valves 145 and 149 are controlled to be closed, the outdoor unit 110 can provide cooling energy to the indoor unit 120, and the air conditioning system 100 is in a normal mode. When the first valve 141, the third valve 145, the sixth valve 149 and the fourth valve 146 are controlled to be opened and the second valve 143 and the fifth valve 147 are controlled to be closed, the outdoor unit 110 can provide the cooling capacity to the cooling capacity storage 130 to store the cooling capacity, and the air conditioning system 100 is in the energy storage mode. When the second valve 143, the third valve 145, the fifth valve 147 and the sixth valve 149 are controlled to be opened and the first valve 141 and the fourth valve 146 are controlled to be closed, the refrigeration capacity storage 130 can provide refrigeration capacity to the indoor unit 120, and the air conditioning system 100 is in an energy supply mode.
It is understood that in other embodiments, the fourth valve 146, the fifth valve 147 and the sixth valve 149 may not be provided, and only the first valve 141, the second valve 143 and the third valve 145 may be provided. At this time, the outdoor unit 110, the indoor unit 120, and the cooling storage are all provided with a valve only at one end, and the on-off requirements of the outdoor unit 110, the indoor unit 120, and the cooling storage 130 can be satisfied when the air conditioning system 100 is in the three modes, i.e., the normal mode, the energy storage mode, and the energy supply mode. At this time, the refrigeration capacity storage 130 is required not to deliver the refrigeration capacity to the indoor unit 120 by itself when the third valve 145 is not opened, and the refrigeration capacity storage 130 and the indoor unit 120 may be implemented by reasonably arranging the relative positions of the refrigeration capacity storage 130 and the indoor unit 120 or by other means. For example, the installation height of the refrigeration capacity storage 130 is made lower than the height of the second heat exchange pipe in the indoor unit 120, and the refrigeration capacity storage 130 does not transmit refrigeration capacity to the indoor unit 120 by itself in a natural state unless the refrigeration capacity is stored excessively in the refrigeration capacity storage 130. However, at this time, since the outdoor unit 110, the indoor unit 120, and the refrigeration storage 130 can be controlled to be turned on and off only by one valve, the control reliability is poor, and it is considered that a monitoring device is additionally provided to detect the states of the outdoor unit 110, the indoor unit 120, and the refrigeration storage 130 in real time, respectively, to assist the control process, thereby improving the control reliability and stability of the air conditioning system 100.
In this embodiment, the first valve 141, the second valve 143, the third valve 145, the fourth valve 146, the fifth valve 147 and the sixth valve 149 are all solenoid valves to facilitate automatic control and reduce the occupied space. In other embodiments, other automatic control valves having similar functions may be used.
In order to conveniently control the flow rate of the refrigerant in the pipeline, an electronic expansion valve 144 is further disposed between the outdoor unit 110 and the first valve 141, the electronic expansion valve 144 is in communication with the controller 142, and the electronic expansion valve 144 is used for regulating the flow rate of the refrigerant.
To facilitate control of the cooling capacity delivery, the air conditioning system 100 includes a cooling medium transport pump 133, the cooling medium transport pump 133 is connected between the cooling capacity storage 130 and the indoor unit 120, and the cooling medium transport pump 133 is used to deliver cooling capacity from the cooling capacity storage 130 to the indoor unit 120.
In this embodiment, in order to save energy and protect environment and ensure the reliability of the operation of the outdoor unit, the outdoor unit 110 selectively takes electricity from one of the commercial power and the solar power generation assembly 160. Specifically, the air conditioning system 100 includes a solar power generation assembly 160, the solar power generation assembly 160 is electrically connected to the outdoor unit 110, and the solar power generation assembly 160 is configured to convert solar energy into electric energy to supply power to the outdoor unit 110. In other embodiments, the outdoor unit 110 may only take power from the solar power generation assembly 160.
Meanwhile, the solar power generation assembly 160 is electrically connected to the coolant transport pump 133 to supply power to the coolant transport pump 133, so as to further achieve energy saving and environmental protection. At this time, the refrigerant transport pump 133 and the outdoor unit 110 are commonly connected to the same solar power generation module 160, so that the occupied space can be effectively reduced. It is understood that in other embodiments, two solar power generation assemblies 160 may be separately disposed, and the two solar power generation assemblies 160 are respectively used for supplying power to the outdoor unit 110 and the refrigerant transportation pump 133. In other embodiments, the coolant pump 133 may also be powered by the commercial power.
Referring to fig. 3, the present embodiment further provides an operation control method of an air conditioning system, for the air conditioning system 100, including: when the outdoor unit 110 cannot supply cooling capacity to the indoor units 120, the cooling capacity storage 130 is controlled to supply cooling capacity to the indoor units 120.
In this embodiment, air conditioning system 100 is provided with the maintenance button, if air conditioning system 100 needs to carry out daily maintenance, the maintainer can press down the maintenance button before overhauing, and controller 142 can receive corresponding signal to judge that air conditioning system 100 is in the maintenance state. When the air conditioning system 100 is in the maintenance state, the outdoor unit 110 does not operate, and the refrigeration capacity storage 130 can be controlled to supply refrigeration capacity to the indoor unit 120, thereby preventing the interruption of refrigeration capacity due to maintenance.
In the present embodiment, the air conditioning system 100 may suddenly fail during operation, and the controller 142 can receive the failure signal, thereby determining that the air conditioning system 100 is in a failure state. At this time, the air conditioning system 100 is in a failure state, the outdoor unit 110 does not operate, and the cooling capacity storage 130 can be controlled to supply cooling capacity to the indoor unit 120, thereby preventing a cooling capacity interruption due to maintenance.
In addition, frequent starting of the air conditioner may be caused by user triggering or failure of mechanical equipment inside the air conditioner, but frequent starting of the air conditioner may easily cause unit failure, so frequent starting of the air conditioning system 100 needs to be avoided as much as possible. In the present embodiment, "frequent start of the air conditioning system 100 occurs" is classified as a case where the air conditioning system 100 is in a failure state "to effectively prevent frequent start of the air conditioner. That is, the fault state includes a frequent start-up in addition to a general case in which the outdoor unit of the air conditioner cannot be started up. As long as it is determined that the air conditioner is in the failure state, the cold storage 130 is activated as a backup cold source to supply cold to the indoor unit 120.
For the judgment of "frequent start", specifically, when the air conditioning system 100 in the shutdown state receives a start instruction, the controller 142 may judge whether the air conditioning system 100 is frequently started according to the interval duration between the current start instruction and the last start instruction. When the interval duration is greater than the duration threshold, the controller 142 determines that the air conditioning system 100 is not frequently started, and the air conditioning system 100 may normally perform subsequent actions. When the interval duration is not greater than the duration threshold, the controller 142 determines that the air conditioning system 100 is frequently started, and at this time, the controller 142 determines that the air conditioning system 100 is in a failure state, so that the air conditioning system 100 is controlled to perform the action after determining that the failure state is reached, the refrigeration capacity storage 130 is used for providing refrigeration capacity to the indoor unit 120, and the outdoor unit 110 does not work any more. This effectively prevents frequent activation of the air conditioning system 100.
Furthermore, before determining whether the air conditioner is in a fault state, whether the cold storage is sufficient needs to be detected, so that the stored cold can be normally used later.
In detail, the air conditioning system operation control method includes the steps of:
s1: it is judged whether the cold storage in the cold storage 130 is sufficient.
If the cold storage is sufficient, executing step S2; if the cold storage is not sufficient, step S5 is executed.
Among them, the cold storage 130 is provided with a storage amount detector capable of detecting the cold information stored at present. The storage volume detector can obtain the cold storage information by detecting the flow volume in combination with the last storage mode operation time and send this information to the controller 142. When the stored cooling capacity is sufficient for the indoor unit 120 to continuously supply cooling to the user for a preset time period, the controller 142 determines that the cooling capacity of the cooling capacity storage is sufficient.
S2: it is determined whether the air conditioning system 100 is frequently activated.
If the start is frequent, go to step S3; if not, the process proceeds to step S4.
S3: and an energy supply mode of operation, wherein the second valve 143, the third valve 145, the fifth valve 147 and the sixth valve 149 are controlled to be opened and the first valve 141 and the fourth valve 146 are controlled to be closed, so that the refrigeration storage 130 supplies refrigeration to the indoor unit 120.
S4: and a normal mode of operation, in which the first valve 141, the second valve 143, the fifth valve 147, and the fourth valve 146 are controlled to be opened and the third valve 145 and the sixth valve 149 are controlled to be closed, so that the outdoor unit 110 provides cooling energy to the indoor unit 120.
S5: and judging whether the sunlight is sufficient.
If the sunlight is sufficient, executing step S6; if the sunlight is insufficient, step S7 is executed.
In this embodiment, a solar radiation detector is configured in the solar power generation assembly 160, when the solar radiation detector detects that the solar radiation is not less than a preset value, the controller 142 determines that the sunlight is sufficient, and when the solar radiation detector detects that the solar radiation is less than the preset value, the controller 142 determines that the sunlight is insufficient. In other embodiments, the solar power generation assembly 160 may also be configured with a photo-resistor to detect whether the sunlight is sufficient.
S6: solar energy power supply and energy storage, namely, the outdoor unit 110 is powered by solar energy to generate cold energy, so that the outdoor unit 110 is controlled to supply the cold energy to the cold energy storage device 130.
The solar power generation assembly 160 can convert solar energy into electric energy, and further supply power to the outdoor unit 110 when sunlight is sufficient, so that the outdoor unit 110 generates cooling capacity.
S7: commercial power supply energy storage, namely, commercial power is used for supplying power to the outdoor unit 110 to generate cold energy, so that the outdoor unit 110 is controlled to provide cold energy to the cold energy storage device 130, and an energy storage mode is operated.
When sunlight is insufficient, solar energy cannot be used for supplying power to the outdoor unit 110, and the outdoor unit 110 can take electricity from commercial power to produce cold energy and further run an energy storage mode.
Wherein, steps S5, S6, and S7 are all running conditions in the energy storage mode.
After the above steps are completed, it may be further determined whether the air conditioner continues to operate, and if the air conditioner continues to operate, step S1 is executed.
It is to be understood that since the frequent start belongs to one of the failure states, the step S2 may be directly replaced by "determining whether the air conditioning system is in the failure state" or by "determining whether the air conditioning system is in the maintenance state". If the state is in the maintenance state or in the fault state, executing step S3; if neither the maintenance state nor the failure state exists, step S4 is executed.
Therefore, the control method in this embodiment is to determine whether the cold storage in the cold storage 130 is sufficient. When the cold energy is stored sufficiently, whether the cold energy is in a fault state or a maintenance state is judged. When the air conditioning system 100 is in a fault state or a maintenance state, the energy supply mode is operated, and the refrigeration capacity storage 130 is used as a standby refrigeration capacity source to provide refrigeration capacity to the indoor unit 120 without opening the outdoor unit 110, so that not only can the continuity of cooling capacity for users be ensured, but also the service life of the compressor 112 can be prevented from being influenced by frequent start-up of the air conditioner, and the stability and reliability of the air conditioning system 100 can be improved.
It is understood that in other embodiments, the outdoor unit 110 may be powered by solar energy, and it is not necessary to determine whether sunlight is sufficient and step S6 is not required, and in the case that the cold storage is insufficient, the commercial power is directly used to drive the outdoor unit 110 to generate cold for being transmitted to the cold storage 130.
In summary, embodiments of the present invention provide an air conditioning system 100 and an operation control method of the air conditioning system, in which a refrigeration capacity storage 130 for storing refrigeration capacity is disposed in the air conditioning system 100, so that the air conditioning system 100 can have three optional operation modes, namely an energy supply mode and an energy storage mode, on the basis of having a normal mode. When the air conditioner is overhauled, the outdoor unit 110 cannot start cooling, the energy supply mode can be operated, and the controller 142 controls the cooling storage 130 serving as a standby cooling source to supply cooling to the indoor unit 120, so that cooling for a user is uninterrupted, comfort of the air conditioner is effectively improved, and user experience is improved. In addition, when the air conditioner is frequently started, the controller 142 can also control the cooling capacity storage 130 to supply cooling capacity to the indoor unit 120 without starting the outdoor unit 110 to perform cooling, so that the influence on the service life of the compressor 112 and other devices can be effectively reduced, and the reliability of the air conditioner can be improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The air conditioning system is characterized by comprising an outdoor unit (110), an indoor unit (120), a cold storage device (130) and a control component (140), wherein the indoor unit (120) and the cold storage device (130) are respectively connected with the outdoor unit (110), so that the control component (140) can control the outdoor unit (110) to selectively provide cold to the indoor unit (120) and the cold storage device (130), the cold storage device (130) can store cold, and the cold storage device (130) is connected to the indoor unit (120) so that the control component (140) can control the cold storage device (130) to provide cold to the indoor unit (120) when the outdoor unit (110) cannot provide cold to the indoor unit (120).
2. The air conditioning system of claim 1, wherein the control assembly (140) includes a controller (142) and first, second, and third valves (141, 143, 145) in communication with the controller (142), respectively;
a first end of the first valve (141) is connected to a first end of the outdoor unit (110), a second end of the first valve (141) is connected to both a first end of the second valve (143) and a first end of the third valve (145), a second end of the second valve (143) is connected to a first end of the indoor unit (120), a second end of the indoor unit (120) is connected to a second end of the outdoor unit (110), a second end of the third valve (145) is connected to a first end of the cold storage (130), and a second end of the cold storage (130) is connected to a second end of the outdoor unit (110);
the controller (142) is used for controlling the opening and closing of the first valve (141), the second valve (143) and the third valve (145); when the first valve (141) and the second valve (143) are controlled to be opened and the third valve (145) is controlled to be closed, the outdoor unit (110) can provide cooling capacity to the indoor unit (120); when the first valve (141) and the third valve (145) are controlled to be opened and the second valve (143) is controlled to be closed, the outdoor unit (110) can supply cold to the cold storage (130) to store the cold; the cold storage (130) can supply cold to the indoor unit (120) when the second valve (143) and the third valve (145) are controlled to be opened and the first valve (141) is controlled to be closed.
3. The air conditioning system of claim 2, wherein the control assembly (140) comprises a fourth valve (146), a fifth valve (147), and a sixth valve (149) in communication with the controller (142), a first end of the fourth valve (146) being connected to the second end of the outdoor unit (110), a second end of the fourth valve (146) being connected to both the first end of the fifth valve (147) and the first end of the sixth valve (149), a second end of the fifth valve (147) being connected to the second end of the indoor unit (120), and a second end of the sixth valve (149) being connected to the second end of the refrigeration storage (130);
when the first valve (141), the second valve (143), the fifth valve (147) and the fourth valve (146) are controlled to be opened and the third valve (145) and the sixth valve (149) are controlled to be closed, the outdoor unit (110) can provide cooling energy to the indoor unit (120); when the first valve (141), the third valve (145), the sixth valve (149) and the fourth valve (146) are controlled to be opened and the second valve (143) and the fifth valve (147) are controlled to be closed, the outdoor unit (110) can supply cold to the cold storage (130) to store the cold; the cold storage (130) can supply cold to the indoor unit (120) when the second valve (143), the third valve (145), the fifth valve (147), and the sixth valve (149) are controlled to be opened and the first valve (141) and the fourth valve (146) are controlled to be closed.
4. The air conditioning system according to claim 1, comprising a solar power generation module (160) and a refrigerant transport pump (133), wherein the solar power generation module (160) is electrically connected to the outdoor unit (110) to supply power to the outdoor unit (110), the refrigerant transport pump (133) is connected between the cold storage unit (130) and the indoor unit (120), the refrigerant transport pump (133) is used for transporting cold from the cold storage unit (130) to the indoor unit (120), and the solar power generation module (160) is electrically connected to the refrigerant transport pump (133) to supply power to the refrigerant transport pump (133).
5. The air conditioning system of claim 4, wherein the outdoor unit (110) selectively draws power from one of a utility power supply and the solar power generation assembly (160).
6. An operation control method of an air conditioning system based on any one of claims 1 to 5, characterized by comprising:
and controlling the refrigeration capacity storage device (130) to supply refrigeration capacity to the indoor unit (120) when the outdoor unit (110) cannot supply refrigeration capacity to the indoor unit (120).
7. The air conditioning system operation control method according to claim 6, wherein the step of controlling the cooling capacity storage (130) to supply cooling capacity to the indoor unit (120) when the outdoor unit (110) cannot supply cooling capacity to the indoor unit (120) comprises:
judging whether the air conditioning system is in a maintenance state, if so, executing the step of controlling the cold storage device (130) to provide cold to the indoor unit (120) when the outdoor unit (110) cannot provide cold to the indoor unit (120);
or judging whether the air conditioning system is in a fault state, and if the air conditioning system is in the fault state, executing the step of controlling the cold energy storage device (130) to provide cold energy to the indoor unit (120) when the outdoor unit (110) cannot provide the cold energy to the indoor unit (120).
8. The air conditioning system operation control method according to claim 7, wherein the step of "determining whether the air conditioning system is in a failure state" includes:
and judging whether the air conditioning system is frequently started or not, and if so, judging that the air conditioning system is in a fault state.
9. The air conditioning system operation control method according to claim 7, wherein the step of "determining whether the air conditioning system is in a failure state" further comprises:
and judging whether the cold energy storage in the cold energy storage device (130) is sufficient, and if the cold energy storage is sufficient, executing the step of judging whether the air conditioning system is in a fault state.
10. The operation control method of an air conditioning system according to claim 9, wherein if the cold storage is insufficient, it is determined whether sunlight is sufficient;
if the sunlight is sufficient, the solar energy is utilized to supply power to the outdoor unit (110) to generate cold energy, and then the outdoor unit (110) is controlled to provide the cold energy to the cold energy storage device (130);
if the sunlight is insufficient, the commercial power is used for supplying power to the outdoor unit (110) to generate cold energy, and then the outdoor unit (110) is controlled to provide the cold energy to the cold energy storage device (130).
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