CN115200121A - Control device and method of air conditioning system and air conditioning system - Google Patents

Control device and method of air conditioning system and air conditioning system Download PDF

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Publication number
CN115200121A
CN115200121A CN202210816568.5A CN202210816568A CN115200121A CN 115200121 A CN115200121 A CN 115200121A CN 202210816568 A CN202210816568 A CN 202210816568A CN 115200121 A CN115200121 A CN 115200121A
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China
Prior art keywords
air
temperature
energy storage
conditioning system
current
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Granted
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CN202210816568.5A
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Chinese (zh)
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CN115200121B (en
Inventor
陈凯
郑波
庄嵘
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202210816568.5A priority Critical patent/CN115200121B/en
Publication of CN115200121A publication Critical patent/CN115200121A/en
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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
    • F24F5/0017—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 using cold storage bodies, e.g. ice
    • 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
    • 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
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention discloses a control device and a method of an air conditioning system and the air conditioning system, wherein the device comprises: an acquisition unit configured to acquire a current temperature parameter of the air conditioning system; and the control unit is configured to control the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and control the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet. According to the scheme, the air valves are arranged in the air ducts of the energy storage system and the refrigeration system, and the air outlets are increased, so that the flow path of the heat exchange medium on the inner side can be changed according to the state change of the energy storage system, and the energy storage system can play a greater energy-saving role.

Description

Control device and method of air conditioning system and air conditioning system
Technical Field
The invention belongs to the technical field of air conditioning systems, and particularly relates to a control device and a control method of an air conditioning system and the air conditioning system, in particular to a control device and a control method of an energy-saving air conditioning system and the energy-saving air conditioning system.
Background
With the progress of the times, industries such as new energy and the like are developed vigorously, installed capacities (namely installed capacity of a power plant and capacity of a power station) of wind power, photoelectricity and the like are rapidly increased, and the importance of an energy storage system is increased day by day. In the air conditioning system in the relevant scheme, the energy storage system carries out cold accumulation on the energy storage device at night when the outdoor temperature is low and the electricity consumption is relatively low in the valley period, and the energy storage system is cooled at the peak value of the electricity consumption in the daytime, so that the burden of the power system at the peak value is reduced to a certain extent. The energy storage method of the energy storage system has a better effect of peak clipping and valley filling for the energy storage cabinet with constant calorific value or the energy storage cabinet with obvious variation trend of calorific value, but the effect is not ideal for other types of energy storage cabinets (such as battery energy storage cabinets), that is, the energy storage method cannot fully exert the advantages of the energy storage system.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control device and a method of an air conditioning system and the air conditioning system, and aims to solve the problems that in the air conditioning system, the energy storage system can only reduce the load of a power system within a period of time in an energy storage mode that the outdoor temperature is low at night and the electricity consumption is low at valley time, and the energy storage system is cooled at peak electricity consumption time in daytime, and the energy storage system does not play a role of the energy storage system outside the period of time, so that the energy storage system has large use limitation and is not beneficial to energy conservation.
The present invention provides a control device for an air conditioning system, the air conditioning system including: a refrigeration system and an energy storage system; an air valve is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system; the air valve can enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve and the second indoor heat exchanger of the energy storage system and then be output to the first air outlet of the indoor space of the air conditioning system, and can also enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve and then be directly output to the second air outlet of the indoor space of the air conditioning system; the control device of the air conditioning system comprises: an acquisition unit and a control unit; wherein the obtaining unit is configured to obtain a current temperature parameter of the air conditioning system; the control unit is configured to control the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and control the air valve according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, the refrigeration system and the energy storage system are integrally disposed to form an integrated system; the outdoor side and the indoor side of the integrated system are separated by a partition plate.
In some embodiments, the current temperature parameters of the air conditioning system include: a current indoor temperature of the air conditioning system; the control unit controls the on-off state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and controls the air valve according to the on-off state of the energy storage system so as to control the on-off state of the first air outlet and the second air outlet, and the control unit comprises: controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is higher than a first set temperature; and under the condition that the refrigerating system is started, further controlling the opening and closing states of the energy storage system and the closing time of the refrigerating system according to the current temperature parameter of the air conditioning system, and controlling the air valve according to the opening and closing states of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system; the control unit further controls the on-off state of the energy storage system and the closing time of the refrigeration system according to the current temperature parameter of the air conditioning system, and controls the air valve according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet, including: determining whether the rising value of the current indoor temperature of the air conditioning system in a set time is greater than a second set temperature; if the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature, controlling the energy storage system to be started and release cold energy, controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct, and controlling the air valve to be closed to a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of the indoor space of the air conditioning system after passing through the air valve and the second indoor heat exchanger of the energy storage system; if the rising value of the current indoor temperature of the air conditioning system in the set time is less than or equal to a second set temperature, or after the air valve is controlled to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and the channel between the air inlet of the air duct and the second air outlet of the air duct is closed, the opening and closing state of the energy storage system and the closing time of the refrigeration system are controlled by combining the current pipe temperature of the first indoor heat exchanger of the refrigeration system, and the air valve is controlled according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the opening and closing state of the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current indoor return air temperature of the air conditioning system; the control unit, combine the current pipe temperature of the first indoor heat exchanger of refrigerating system, control the open and close state of energy storage system and the closing opportunity of refrigerating system to according to the open and close state control blast gate of energy storage system is in order to control the open and close state of first air outlet and second air outlet, include: determining whether a change value of a current tube temperature of a first indoor heat exchanger of the refrigeration system in a set time is less than a third set temperature; if the change value of the current indoor temperature of the first indoor heat exchanger of the refrigeration system in the set time is greater than or equal to the third set temperature, returning to determine whether the rising value of the current indoor temperature of the air-conditioning system in the set time is greater than the second set temperature; if the change value of the current pipe temperature of the first indoor heat exchanger of the refrigeration system in the set time is less than the third set temperature, determining whether the current indoor return air temperature of the air-conditioning system is less than the fourth set temperature: if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, returning to continuously control the energy storage system to be started and release cold energy, and controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system; if the current indoor return air temperature of the air conditioning system is lower than a fourth set temperature, controlling the energy storage system to be closed and stop releasing cold energy, and controlling the air valve to close a channel between an air inlet of the air duct and a first air outlet of the air duct and to connect a channel between the air inlet of the air duct and a second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; and then, controlling the opening and closing state of the energy storage system and the closing time of the refrigerating system by combining the current indoor return air temperature of the air conditioning system, and controlling the air valve according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system and the current air outlet temperature of a first air outlet of the air conditioning system; the energy storage system is provided with an energy storage device; the control unit, combine air conditioning system's current indoor return air temperature, control the open and close state of energy storage system and the opportunity of closing of refrigerating system to according to the open and close state control of energy storage system the blast gate is in order to control the open and close state of first air outlet and second air outlet, include: determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature; if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device to store cold energy, and controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to be closed, so that an indoor heat exchange medium input from the air inlet of the air duct passes through the air valve and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system; determining whether the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature; if the current indoor return air temperature of the air-conditioning system is higher than a fifth set temperature, reducing the flow of the cold energy stored by the energy storage device, and then returning to determine whether the current indoor return air temperature of the air-conditioning system is lower than or equal to the fifth set temperature again; and if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, controlling the opening and closing state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and controlling the air valve according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, the controlling unit, in combination with a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system, and a current outlet air temperature of a first air outlet of the air conditioning system, controls an on-off state of the energy storage system and a closing timing of the refrigeration system, and controls the air valve according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet, includes: determining whether the current outlet air temperature of a first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system; if the current air outlet temperature of the first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, controlling the air valve to close a channel between an air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; determining whether the current indoor return air temperature of the air conditioning system is less than a sixth set temperature; and if the current indoor return air temperature of the air conditioning system is lower than a sixth set temperature, controlling the refrigeration system to be closed.
In accordance with another aspect of the present invention, there is provided an air conditioning system including: the control device of the air conditioning system described above.
In matching with the air conditioning system, another aspect of the present invention provides a method for controlling an air conditioning system, where the air conditioning system includes: a refrigeration system and an energy storage system; an air valve is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system; the air valve can enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve and the second indoor heat exchanger of the energy storage system and then be output to the first air outlet of the indoor space of the air conditioning system, and can also enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve and then be directly output to the second air outlet of the indoor space of the air conditioning system; the control method of the air conditioning system comprises the following steps: acquiring a current temperature parameter of the air conditioning system; and controlling the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and controlling the air valve according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system comprises: a current indoor temperature of the air conditioning system; according to the current temperature parameter of the air conditioning system, controlling the opening and closing state of at least one of the energy storage system and the refrigeration system, and controlling the air valve according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet, wherein the method comprises the following steps: controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is higher than a first set temperature; and under the condition that the refrigerating system is started, further controlling the opening and closing states of the energy storage system and the closing time of the refrigerating system according to the current temperature parameter of the air conditioning system, and controlling the air valve according to the opening and closing states of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system; further according to the current temperature parameter of the air conditioning system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet, including: determining whether the rising value of the current indoor temperature of the air conditioning system in a set time is greater than a second set temperature; if the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature, controlling the energy storage system to be started and release cold energy, controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct, and controlling the air valve to be closed to a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of the indoor space of the air conditioning system after passing through the air valve and the second indoor heat exchanger of the energy storage system; if the rising value of the current indoor temperature of the air conditioning system in the set time is less than or equal to a second set temperature, or after the air valve is controlled to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and the channel between the air inlet of the air duct and the second air outlet of the air duct is closed, the opening and closing state of the energy storage system and the closing time of the refrigeration system are controlled by combining the current pipe temperature of the first indoor heat exchanger of the refrigeration system, and the air valve is controlled according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the opening and closing state of the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current indoor return air temperature of the air conditioning system; combining the current tube temperature of a first indoor heat exchanger of the refrigeration system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve according to the on-off state of the energy storage system so as to control the on-off states of the first air outlet and the second air outlet, including: determining whether a change value of a current tube temperature of a first indoor heat exchanger of the refrigeration system in a set time is less than a third set temperature; if the change value of the current indoor temperature of the first indoor heat exchanger of the refrigeration system in the set time is greater than or equal to the third set temperature, returning to determine whether the rising value of the current indoor temperature of the air-conditioning system in the set time is greater than the second set temperature; if the change value of the current pipe temperature of the first indoor heat exchanger of the refrigeration system in the set time is less than the third set temperature, determining whether the current indoor return air temperature of the air-conditioning system is less than the fourth set temperature: if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, returning to continuously control the energy storage system to be started and release cold energy, and controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system; if the current indoor return air temperature of the air conditioning system is lower than a fourth set temperature, controlling the energy storage system to be closed and stop releasing cold energy, and controlling the air valve to close a channel between an air inlet of the air duct and a first air outlet of the air duct and to connect a channel between the air inlet of the air duct and a second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; and then, controlling the opening and closing state of the energy storage system and the closing time of the refrigerating system by combining the current indoor return air temperature of the air conditioning system, and controlling the air valve according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system and the current air outlet temperature of a first air outlet of the air conditioning system; the energy storage system is provided with an energy storage device; the current indoor return air temperature of the air conditioning system is combined, the opening and closing state of the energy storage system and the closing time of the refrigerating system are controlled, and the air valve is controlled according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet, and the method comprises the following steps: determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature; if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device to store cold energy, and controlling the air valve to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to be closed, so that an indoor heat exchange medium input from the air inlet of the air duct passes through the air valve and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system; determining whether the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature; if the current indoor return air temperature of the air conditioning system is higher than a fifth set temperature, reducing the flow of the cold energy stored by the energy storage device, and then returning to determine whether the current indoor return air temperature of the air conditioning system is lower than or equal to the fifth set temperature again; and if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, controlling the opening and closing state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and controlling the air valve according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
In some embodiments, combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current outlet air temperature of the first air outlet of the air conditioning system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet includes: determining whether the current outlet air temperature of a first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system; if the current air outlet temperature of the first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, controlling the air valve to close a channel between an air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; determining whether the current indoor return air temperature of the air conditioning system is less than a sixth set temperature; and if the current indoor return air temperature of the air conditioning system is lower than a sixth set temperature, controlling the refrigeration system to be closed.
Therefore, according to the scheme of the invention, the inner side second heat exchanger, the power pump and the energy storage device jointly form an energy storage system, the inner side first heat exchanger, the compressor and the outer side heat exchanger jointly form a refrigeration system, an air valve is arranged in an air duct between the inner side second heat exchanger and the inner side first heat exchanger in the refrigeration system in the energy storage system, an air valve is additionally arranged, so that an inner side heat exchange medium (namely air) directly flows back to an air outlet (namely an inner side medium outlet II) on a user side after passing through the air valve, the flow path of the inner side heat exchange medium is changed through the air valve according to the state change of the energy storage system, and the inner side heat exchange medium (namely air) can directly flow back to the air outlet on the user side after passing through the air valve when the energy storage system is not used, so as to avoid partial energy loss; therefore, the air valves are arranged in the air ducts of the energy storage system and the refrigeration system, and the air outlets are increased, so that the flow path of the heat exchange medium on the inner side can be changed according to the state change of the energy storage system, and the energy storage system can play a greater energy-saving role.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a control device of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an energy-saving air conditioning system according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method of an energy saving air conditioning system according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 5 is a schematic flow diagram of one embodiment of a first process for controlling the energy storage system, the refrigeration system, and the damper according to current temperature parameters in the method of the present invention;
FIG. 6 is a schematic flow diagram of one embodiment of a second process for controlling the energy storage system, the refrigeration system, and the damper according to the current temperature parameters in the method of the present invention;
FIG. 7 is a schematic flow diagram of one embodiment of a third process for controlling the energy storage system, the refrigeration system, and the damper according to the current temperature parameters in the method of the present invention;
FIG. 8 is a schematic flow chart diagram illustrating one embodiment of a fourth process for controlling the energy storage system, the refrigeration system, and the damper according to the current temperature parameters in the method of the present invention;
fig. 9 is a schematic flow chart of an embodiment of a fifth process for controlling the energy storage system, the refrigeration system and the air valve according to the current temperature parameter in the method of the present invention.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
10-outside of the system; 11-outer heat exchange medium flow direction; 12-an outside heat exchanger; 13-a compressor; 20-inside the system; 21-inner heat exchange medium flow direction; 22-inner first heat exchanger; 23-an inboard second heat exchanger; 24. a power pump; 25-an energy storage means; 26-a blast gate; 21 a-inner side medium outlet one; 21 b-inner side medium outlet two;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the energy storage cabinet of the energy storage system, as for the battery energy storage cabinet, the overall thermal load of the energy storage cabinet is not greatly related to the load of a power grid and is not related to the load of the power grid, the most direct and most significant influence is the state of the battery, namely the heat productivity of the battery is increased rapidly when the battery is in charging/discharging, the load in the cabinet is increased rapidly, and at the moment, the energy storage device is required to release cold. However, the energy storage system in the related scheme can only store and release cold in a specific time, and the cold cannot be accurately provided every time when the cold is needed in most of the time, so that the effect is not ideal.
In addition, the refrigeration-energy storage system in the related scheme has the disadvantages of large energy consumption of pipelines, more equipment and large occupied area, and not only influences the overall energy efficiency, but also increases the initial investment and the operation cost of the refrigeration-energy storage system, so the popularization is very unfavorable.
It can be seen that whatever form the refrigeration + energy storage system in the related scheme is, the essence is that the energy storage system is connected between the air conditioning system and the user side through pipelines (such as air duct pipelines, liquid pipelines and the like), the number of pipelines is increased, the total resistance of the pipeline sections is increased, the energy consumption is increased, the pipeline length is increased, and the heat dissipated by the pipeline is correspondingly increased. Wherein, refrigeration + energy storage system mainly includes: the indoor unit and the outdoor unit of the air conditioner, additional equipment and energy storage equipment are larger, and more equipment needs to be placed, so that the occupied area is large. In the aspect of control, the outdoor temperature is lower and the power consumption is the low ebb period relatively night and carries out the cold-storage to energy storage equipment, and the load of electric power system when the peak value is reduced to a certain extent to the cold of putting during the power consumption peak value daytime, only in order to reduce electric power system's load for a period of time, has certain limitation, does not exert energy storage system's effect completely outside this time quantum.
According to an embodiment of the present invention, there is provided a control apparatus of an air conditioning system. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The air conditioning system includes: a refrigeration system and an energy storage system. An air valve 26 is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system. The air valve 26 can make the indoor heat exchange medium input from the air inlet of the air duct output to the first air outlet of the indoor space of the air conditioning system after passing through the air valve 26 and the second indoor heat exchanger of the energy storage system, and also can make the indoor heat exchange medium input from the air inlet of the air duct directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve 26. A first indoor heat exchanger of the refrigeration system, such as an inboard first heat exchanger 22, and a second indoor heat exchanger of the refrigeration system, such as an inboard second heat exchanger 23. The first outlet is the first inner side medium outlet 21a, and the second outlet is the second inner side medium outlet 21b.
Fig. 2 is a schematic structural diagram of an energy-saving air conditioning system according to an embodiment of the present invention. The energy saving air conditioning system as shown in fig. 2 includes: a system exterior 10 and a system interior 20. The system inner side 20 and the system outer side 10 are both internal structures of the same unit, and the system inner side 20 and the system outer side 10 are separated by a partition.
Specifically, the system exterior 10 includes: an outer heat exchanger 12 and a compressor 13. The flow direction of the heat exchange medium of the outer heat exchanger 12 is the outer heat exchange medium flow direction 11. In the example shown in fig. 2, the system inner side 20 includes: the first inner medium outlet 21a, the second inner medium outlet 21b, the first inner heat exchanger 22, the second inner heat exchanger 23, the power pump 24, the energy storage device 25 and the air valve 26. Therefore, compared with the related scheme, the scheme of the invention not only combines the refrigeration system and the energy storage system into an integrated structure, namely the unit has no branch of an internal unit and an external unit, but also has only one unit which is divided into an internal unit and an external unit, thereby reducing redundant pipe sections, and additionally adding one air valve 26 and one air outlet, which is convenient for realizing the energy-saving control of the energy-saving air-conditioning system.
The heat exchange quantity is the result of the common influence of the heat exchange temperature difference and the circulating air quantity. Like this, the blast gate 26 and the air outlet that increase more can make the unit circulate the wind and do not pass through the indoor second heat exchanger of energy storage system when not using energy storage system, reducible system windage, just also reduced the inside energy consumption of system, the amount of wind is bigger under the condition of same fan power, and refrigeration effect is better, also more does benefit to energy-saving control.
An exhaust port of the compressor 13 communicates with a first port of the outside heat exchanger 12. The second port of the outer heat exchanger 12 is communicated to the suction port of the compressor 13 through the inner first heat exchanger 22. The outer heat exchange medium flow direction 11 is a direction from the first port of the outer heat exchanger 12 to the second port of the outer heat exchanger 12. The first port of the inner second heat exchanger 23 is communicated to the second port of the inner second heat exchanger 23 after passing through the power pump 24 and the energy storage device 25. And an air valve 26 located between the inner first heat exchanger 22 and the inner second heat exchanger 23. The inner heat exchange medium flows 21 in the direction of the inner first heat exchanger 22 to the inner second heat exchanger 23. And an inner side medium outlet I21 a which outputs from the inner side second heat exchanger 23. And an inner medium outlet two 21b which outputs the medium from a position between the inner second heat exchanger 23 and the energy storage device 25.
In the example shown in fig. 2, the inner first heat exchanger 22 constitutes a refrigeration system together with the compressor 13 and the outer heat exchanger 12. The refrigerating system has the function that the heat inside the room is absorbed and transferred to the outer heat exchanger 12 by the inner first heat exchanger 22 to be released, so that the inner refrigerating effect is achieved, and the compressor 13 provides power for the whole cycle.
In the example shown in fig. 2, the inner second heat exchanger 23, the power pump 24 and the energy storage device 25 together form an energy storage system. When the heat load of the user side is smaller than the refrigerating capacity generated by the refrigerating system, the energy storage system absorbs a part of the redundant refrigerating capacity generated by the inner side first heat exchanger 22 through the inner side second heat exchanger 23 and stores the refrigerating capacity in the energy storage device 25, and when the heat load of the user side reaches a peak value, the refrigerating capacity in the energy storage device 25 is released through the inner side second heat exchanger 23.
In the example shown in fig. 2, the damper 26 is located between the evaporation side of the refrigeration system (i.e., the inside first heat exchanger 22) and the heat exchanger of the energy storage system (i.e., the inside second heat exchanger 23), and adjusts the flow direction of the inside medium according to the unit state. The damper 26 functions to open or close when the state of the energy storage system changes to change the flow path of the inside heat exchange medium. Thus, by controlling the flow path with the damper 26, partial energy losses can be avoided when the energy storage system is not in use.
As shown in fig. 2, the specific form of the outer heat exchange medium flow direction 11 is as follows: the heat exchange medium coming from the outside of the unit flows through the outside heat exchanger 12 and back to the outside. The inner first heat exchanger 22 and the damper 26 are located in the same passage, and thereafter are divided into two flow paths. Therefore, the specific form of the inner heat exchange medium flow direction 21 is as follows: air from the user side firstly exchanges heat through the inner side first heat exchanger 22 and then passes through the adjusting air valve 26, when the energy storage system is opened, the air valve 26 is controlled to enable the air to flow back to the user side from the inner side medium outlet I21 a after the air passes through the air valve 26 and exchanges heat through the inner side second heat exchanger 23, wherein the energy storage system is opened in two ways, namely, cold energy is released into the medium and is absorbed by the medium. Air from the user side passes through the first inner heat exchanger 22 for heat exchange and then passes through the adjusting air valve 26, and when the energy storage system is closed, the air valve 26 is controlled to enable the air to directly flow back to the user side from the second inner medium outlet 21b after passing through the air valve 26.
It should be noted that fig. 2 is only a simplified diagram made for convenience of understanding the described exemplary embodiment of the present invention, and other devices (such as a throttling device and the like) and additional devices (such as a filter and the like) which are not shown in the drawing are not a framework for limiting the solution of the present invention.
In some embodiments, the refrigeration system and the energy storage system are integrated to form an integrated system. The outdoor side and the indoor side of the integrated system are separated by a partition plate.
In the scheme of the invention, the integrated system is arranged, and the integrated design is that the refrigerating end and the energy storage end, the refrigerating end and the user end, and the energy storage end and the user end are all in the same channel, are in the same flow and are inward, so that the internal connecting pipe sections are reduced, and the system is simplified. And the wind valve is controlled, so that partial energy loss can be avoided when an energy storage system is not used, and the excellent performance is achieved.
The scheme of the invention provides an energy-saving air conditioning system, which combines a refrigeration system and an energy storage system into an integrated system, and the inner side and the outer side of the integrated system are separated by a partition plate. Therefore, the use of the connecting pipeline is greatly reduced, the energy loss of the energy storage system in related schemes due to long pipeline connection is reduced, the cost addition caused by factors such as equipment floor area is greatly reduced, and the method is simple, convenient and fast and is more beneficial to popularization. Therefore, the problems of more refrigeration and energy storage system equipment and large occupied area in related schemes are solved, and the problem of large energy consumption caused by refrigeration and energy storage system pipelines in related schemes is also solved.
In an aspect of the present invention, the control device of an air conditioning system includes: an acquisition unit and a control unit.
Wherein the obtaining unit is configured to obtain a current temperature parameter of the air conditioning system.
Specifically, the obtaining unit is configured to obtain a current indoor temperature of the air conditioning system, obtain a current indoor return air temperature of the air conditioning system, obtain a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system, obtain a current outlet air temperature of a first air outlet of the air conditioning system, and obtain a current pipe temperature of the first indoor heat exchanger of the refrigeration system. The current indoor temperature of the air conditioning system, such as user side temperature 1. And the current indoor return air temperature of the air conditioning system is 2 as the temperature of an indoor side return air inlet of the unit. The current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, for example, the temperature 3 between the first heat exchanger 22 and the second heat exchanger 23 inside the unit. The current tube temperature of the first indoor heat exchanger of the refrigeration system is, for example, the evaporator tube temperature of the refrigeration system, that is, the temperature 5.
And detecting the air outlet temperature of the first air outlet, and controlling the energy storage system to be opened at the moment according to the current temperature of the first air outlet.
The control unit is configured to control an on-off state of at least one of the energy storage system and the refrigeration system according to a current temperature parameter of the air conditioning system, and control the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet.
Specifically, the control unit is configured to control an on-off state of at least one of the energy storage system and the refrigeration system according to at least one of a current indoor temperature of the air conditioning system, a current indoor return air temperature of the air conditioning system, a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system, a current air outlet temperature of a first air outlet of the air conditioning system, and a current pipe temperature of the first indoor heat exchanger of the refrigeration system, and control the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet.
Fig. 3 is a flowchart illustrating a control method of an energy saving air conditioning system according to an embodiment of the present invention. As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention includes:
step 1, firstly, a temperature sensor is needed to measure the temperature of a user side 1, and a temperature sensor is needed to measure the temperature of a return air inlet on the indoor side of the unit 2, the temperature between a first heat exchanger 22 on the inner side of the unit and a second heat exchanger 23 on the inner side of the unit 3, the temperature of a first air outlet on the indoor side of the unit 4 and the temperature of an evaporator tube of a refrigerating system, namely the temperature 5.
The damper 26 is in different states according to the opening and closing of the energy storage system. When the air valve 26 is in the state 1, the air valve 26 communicates the inner first heat exchanger 22 and the inner second heat exchanger 23, and closes the passage between the air valve 26 and the inner medium outlet two 21b. When the damper 26 is in the state 2, the damper 26 opens the passage of the second inside medium outlet 21b, and closes the passage of the damper 26 and the second inside heat exchanger 23.
It should be noted that, the two temperature information, i.e., the temperature 1 at the user side and the temperature 2 at the air inlet at the indoor side of the unit, both indicate the temperature at the user side, and the values should be the same or very close to each other, so as to reduce the probability that the temperature error at the user side affects the refrigeration system. The temperature 3 between the inside first heat exchanger 22 and the inside second heat exchanger 23 is the temperature of the air that has exchanged heat with the indoor first heat exchanger 22 and has not exchanged heat with the indoor second heat exchanger 23.
The control method of the energy-saving air-conditioning system provided by the scheme of the invention aims to ensure that the energy-saving air-conditioning system can store cold not only in the electricity utilization valley at night, but also in the charge and discharge time at ordinary times, release cold energy when the load on the user side is higher and the temperature rise is faster, reduce the peak load, keep the equipment to stably run, reduce unnecessary energy consumption and improve the energy efficiency of the energy-saving air-conditioning system.
In some embodiments, the current temperature parameter of the air conditioning system comprises: a current indoor temperature of the air conditioning system.
The control unit controls the on-off state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and controls the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet, including:
the control unit is specifically further configured to control the refrigeration system to be turned on, for example, control a compressor 13 of the refrigeration system to be turned on, when the current temperature parameter of the air-conditioning system includes the current indoor temperature of the air-conditioning system and when the current indoor temperature of the air-conditioning system is greater than a first set temperature.
The control unit is specifically configured to, when the refrigeration system is already turned on, further control an on-off state of the energy storage system and a closing timing of the refrigeration system according to a current temperature parameter of the air conditioning system, and control the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
in fig. 3, a first set temperature T1 is a unit design start parameter, preferably 24 ℃, a first set temperature T2 is preferably 5 ℃ ± 1 ℃, a third set temperature T3 is preferably 1 ℃ ± 0.5 ℃, a fourth set temperature T4 is a temperature of 28 ℃ ± 1 ℃ in a state of closing the energy storage system to release cold, a fifth set temperature T5 is a maximum user-side design temperature of 24 ℃, and a sixth set temperature T6 is a unit design shut-off temperature of 17 ℃ to 19 ℃.
Step 2, when the temperature sensor detects that the user side temperature 1 exceeds the design temperature, for example, the first set temperature, that is, the first set temperature T1 (for example, 24 ℃), starting the refrigeration system, and determining the state of the energy storage device 25, for example, an energy storage cabinet, through the change of the user side temperature 1 and making a relative response, which may be specifically referred to the control process of step 3 and the following steps.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system.
The control unit, when the refrigeration system is turned on, further controlling an on/off state of the energy storage system and a closing time of the refrigeration system according to a current temperature parameter of the air conditioning system, and controlling the air valve 26 according to the on/off state of the energy storage system to control the on/off states of the first air outlet and the second air outlet, includes:
the control unit is specifically further configured to determine whether a rise value of the current indoor temperature of the air conditioning system within a set time is greater than a second set temperature.
The control unit is specifically configured to control the energy storage system to start and release cold energy if a rising value of the current indoor temperature of the air conditioning system in a set time is greater than a second set temperature, and control the air valve 26 to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and the second indoor heat exchanger of the energy storage system and is output to the first air outlet of the indoor space of the air conditioning system.
The control unit is specifically configured to control the on-off state of the energy storage system and the closing time of the refrigeration system in combination with the current tube temperature of the first indoor heat exchanger of the refrigeration system, and control the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet if the rising value of the current indoor temperature of the air conditioning system within a set time is less than or equal to a second set temperature, or after controlling the air valve 26 to be communicated with the channel between the air inlet of the air duct and the first air outlet of the air duct and closing the channel between the air inlet of the air duct and the second air outlet of the air duct.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 3, judging whether the rising value of the user side temperature 1 in unit time exceeds a second set temperature T2 (such as 5 ℃): if yes, executing step 4, otherwise executing step 5.
And 4, starting the energy storage device 25 to release cold energy, and adjusting the air valve 26 to be in the state 1.
Specifically, when the change of the user-side temperature 1 in unit time is large, for example, the rise value in unit time exceeds a second set temperature T2 (for example, 5 ℃), which indicates that the battery in the energy storage cabinet is in a rapid charging and discharging state at this time, and belongs to a case where the load is high, at this time, the energy storage device 25 is opened to release cold energy, and the air valve 26 is adjusted to the state 1 to communicate the energy storage system and the refrigeration system, and then step 5 is executed.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current indoor return air temperature of the air conditioning system.
The control unit, combine the current pipe temperature of the first indoor heat exchanger of refrigerating system, control the open and close state of energy storage system and the closing opportunity of refrigerating system to according to the open and close state control blast gate 26 of energy storage system is in order to control the open and close state of first air outlet and second air outlet, include:
the control unit is specifically further configured to determine whether a variation value of a current tube temperature of a first indoor heat exchanger of the refrigeration system within a set time is less than a third set temperature.
The control unit is specifically further configured to return to determine whether the rising value of the current indoor temperature of the air conditioning system in the set time is greater than the second set temperature again if the change value of the current pipe temperature of the first indoor heat exchanger of the refrigeration system in the set time is greater than or equal to the third set temperature.
The control unit is specifically further configured to determine whether the current indoor return air temperature of the air conditioning system is less than a fourth set temperature if a variation value of the current tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is less than a third set temperature:
the control unit is specifically configured to return to continue to control the energy storage system to be started and release cold energy if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, and control the air valve 26 to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and the second indoor heat exchanger of the energy storage system and is output to the first air outlet of the indoor space of the air conditioning system.
The control unit is specifically configured to control the energy storage system to close and stop releasing cold energy if the current indoor return air temperature of the air conditioning system is less than a fourth set temperature, and control the air valve 26 to close a channel between the air inlet of the air duct and the first air outlet of the air duct and to communicate with a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve 26. And then, controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current indoor return air temperature of the air conditioning system, and controlling the air valve 26 according to the on-off state of the energy storage system so as to control the on-off state of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 5, when the rising value of the user side temperature 1 in the unit time is less than or equal to the second set temperature T2 (for example, 5 ℃), the next step is performed, that is, whether the change value of the evaporator tube temperature of the refrigeration system, that is, the temperature 5 is less than a third set temperature T3 (for example, 1 ℃): if yes, executing step 6, otherwise returning to step 3.
And 6, when the change value of the temperature of the evaporator tube of the refrigerating system, namely the temperature 5, is less than a third set temperature T3 (for example, 1 ℃), the refrigerating system runs stably, the released cold quantity of the refrigerating system gradually occupies a dominant position, the temperature of the energy storage device 25 such as the energy storage cabinet begins to drop, and then the step 7 is executed.
When the variation value of the evaporator tube temperature of the refrigeration system, i.e. the temperature 5, is not less than the third set temperature T3 (e.g. 1 ℃), it is indicated that the refrigeration system is not operating smoothly, and in order to prevent the rise value of the user side temperature 1 per unit time from being greater than the second set temperature T2 (e.g. 5 ℃) when the refrigeration system is waiting to operate smoothly, the step 3 needs to be returned again to determine whether the rise value of the user side temperature 1 per unit time is less than the second set temperature T2 (e.g. 5 ℃).
Step 7, judging whether the temperature 2 of the indoor side air return inlet of the unit is lower than a fourth set temperature T4 (such as 28 ℃): if yes, go to step 8, otherwise go to step 4.
Step 8, the energy storage system is closed, and the damper 26 is adjusted to state 2.
When the temperature of the indoor air return inlet of the unit is less than the fourth set temperature T4 (for example, 28 ℃), the energy storage system can be closed to stop releasing cold, the air valve is adjusted to be in the state 2, the cooling of the refrigeration system is enough at the moment, if the energy storage system is not started in the previous step, the step of closing the energy storage system and adjusting the state of the air valve is skipped, and then the step 9 is executed.
After the refrigeration system runs stably, when the temperature 2 of the air return opening at the indoor side of the unit is higher than the fourth set temperature T4 (for example, 28 ℃), it indicates that a large amount of heat load is still accumulated at the user side, and at this time, step 4 needs to be executed, that is, the energy storage system is opened to release cold energy and the air valve is adjusted to the state 1, so as to help to quickly reduce the temperature at the user side.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system, and the current air outlet temperature of the first air outlet of the air conditioning system. The energy storage system has an energy storage device 25.
The control unit, combine the current indoor return air temperature of air conditioning system, control the open and close state of energy storage system and the closing opportunity of refrigerating system to according to the open and close state control of energy storage system blast gate 26 is in order to control the open and close state of first air outlet and second air outlet, include:
the control unit is further specifically configured to determine whether a current indoor return air temperature of the air conditioning system is less than a fifth set temperature.
The control unit is specifically configured to control the energy storage system to be turned on and control the energy storage device 25 to store cold energy, and control the air valve 26 to be connected to a channel between the air inlet of the air duct and the first air outlet of the air duct and to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and the second indoor heat exchanger of the energy storage system and is output to the first air outlet of the indoor space of the air conditioning system, if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature. Of course, the control unit is specifically configured to wait, that is, continue to determine whether the current indoor return air temperature of the air conditioning system is less than the fifth set temperature if the current indoor return air temperature of the air conditioning system is greater than or equal to the fifth set temperature.
The control unit is specifically further configured to determine whether a current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature.
The control unit is specifically configured to reduce the flow rate of the cold energy stored in the energy storage device 25 if the current indoor return air temperature of the air conditioning system is greater than a fifth set temperature, and then return the flow rate to re-determine whether the current indoor return air temperature of the air conditioning system is less than or equal to the fifth set temperature.
The control unit is specifically configured to, if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, control an on-off state of the energy storage system and a closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and control the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 9, judging whether the temperature 2 of the air return inlet at the indoor side of the unit is lower than a fifth set temperature T5 (for example, 24 ℃): if yes, step 10 is executed, otherwise, the process continues to wait in step 9.
Step 10, when the temperature 2 of the indoor side air return inlet of the unit is lower than a fifth set temperature T5 (for example, 24 ℃), it is indicated that the refrigerating capacity of the refrigerating system exceeds the heat load in the energy storage cabinet, at this time, the energy storage device 25 can be opened to store the refrigerating capacity and the air valve is adjusted to the state 1 to communicate the energy storage system and the refrigerating system, but the stored refrigerating capacity cannot exceed the difference value between the refrigerating capacity of the refrigerating system and the heat load of the energy storage cabinet, and then step 11 is executed.
Step 11, judging whether the indoor side return air inlet temperature 2 is less than or equal to a fifth set temperature T5 (such as 24 ℃): if so, executing the step 12, otherwise, adjusting the cold energy of the energy storage system and returning to the step 11.
When the temperature 2 of the indoor side air return inlet is higher than the fifth set temperature T5 (such as 24 ℃), the flow of the energy storage system needs to be reduced by adjusting the power pump 24 so as to reduce the cold absorbed by the energy storage system, and when the temperature 2 of the indoor side air return inlet is lower than or equal to the fifth set temperature T5 (such as 24 ℃), the cold is continuously stored.
In some embodiments, the controlling unit, in combination with a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system and a current outlet air temperature of a first air outlet of the air conditioning system, controls an on-off state of the energy storage system and a closing time of the refrigeration system, and controls the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet, includes:
the control unit is specifically further configured to determine whether a current outlet air temperature of the first air outlet of the air conditioning system is less than or equal to a current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system.
The control unit is specifically configured to control the air valve 26 to close a channel between the air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and is directly output to the second air outlet of the indoor space of the air conditioning system, if the current air outlet temperature of the first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system. Of course, if the current air-out temperature of the first air outlet of the air-conditioning system is greater than the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, waiting, that is, continuously determining whether the current air-out temperature of the first air outlet of the air-conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system.
The control unit is further specifically configured to determine whether a current indoor return air temperature of the air conditioning system is less than a sixth set temperature.
The control unit is specifically configured to control the refrigeration system to be turned off if the current indoor return air temperature of the air conditioning system is less than a sixth set temperature. Of course, the control unit is specifically configured to wait, that is, continue to determine whether the current indoor return air temperature of the air conditioning system is less than the sixth set temperature if the current indoor return air temperature of the air conditioning system is greater than or equal to the sixth set temperature.
The relationship between the first set temperature and the sixth set temperature can be determined according to different scenes. For example: the first set temperature is greater than the second set temperature, the second set temperature is greater than the third set temperature, the fourth set temperature is greater than the first set temperature, the fifth set temperature is less than or equal to the first set temperature, and the sixth set temperature is less than the fifth set temperature. For another example: the first set point temperature, the fourth set point temperature, and the fifth set point temperature may be the same, such as 24 ℃.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 12, judging whether the indoor side first air outlet temperature 4 is less than or equal to the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23: if yes, go to step 13, otherwise continue to wait at step 12.
And step 13, when the temperature 4 of the first air outlet at the indoor side is higher than the temperature 3 between the first heat exchanger 22 at the inner side and the second heat exchanger 23 at the inner side, the energy storage system is indicated to absorb cold. When the temperature of the indoor first air outlet 4 is equal to or lower than the temperature 3 between the inner first heat exchanger 22 and the inner second heat exchanger 23, the cold storage capacity of the energy storage system is saturated, and no cold storage capacity needs to be stored, at this time, the energy storage system is closed, the air valve is adjusted to be in a state 2, and then the step 14 is executed.
And step 14, finally, when the temperature 2 of the indoor side air return inlet is less than the sixth set temperature T6 (such as 19 ℃), the refrigerating system can be closed.
The scheme of the invention also provides a control method of the energy-saving air-conditioning system, so that the energy-saving air-conditioning system can store cold not only in the low valley of electricity consumption at night, but also in the low refrigeration requirement at ordinary times. If the battery in the energy storage cabinet does not change in the charging and discharging state, the load generated by the battery is far lower than the load during charging. At the moment, a part of the refrigerating capacity of the refrigerating system is used in the energy storage cabinet, and a part of the refrigerating capacity of the refrigerating system is used for cold accumulation in the energy storage system. When the load on the user side is high and the temperature rise is fast, the cold energy is released to reduce the peak load, so that the equipment is kept to run stably, and the energy efficiency of the energy-saving air conditioning system is improved. Therefore, the control method of the energy-saving air conditioning system is suitable for an integrated system formed by combining a refrigerating system and an energy storage system, when the refrigeration requirement is low at ordinary times, cold energy is released when the load of the cold storage is higher at a user side and the temperature rise is faster, the problem that the energy storage method cannot fully exert the advantages of the energy storage system in related schemes is solved, and the energy-saving effect is improved.
By adopting the technical scheme of the invention, the inner side second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form an energy storage system, the inner side first heat exchanger 22, the compressor 13 and the outer side heat exchanger 12 jointly form a refrigerating system, an air valve 26 is arranged in an air duct between the inner side second heat exchanger 23 and the inner side first heat exchanger 22 in the energy storage system, an air outlet (namely an inner side medium outlet two 21 b) of the inner side heat exchange medium (namely air) on a user side is increased after passing through the air valve 26, the flow path of the inner side heat exchange medium is changed through the air valve 26 according to the state change of the energy storage system, and the inner side heat exchange medium (namely air) can directly flow back to the air outlet on the user side after passing through the air valve 26 when the energy storage system is not used, so as to avoid partial energy loss. Therefore, the air valves are arranged in the air ducts of the energy storage system and the refrigeration system, and the air outlets are increased, so that the flow path of the heat exchange medium on the inner side can be changed according to the state change of the energy storage system, and the energy storage system can play a greater energy-saving role.
According to an embodiment of the present invention, there is also provided an air conditioning system corresponding to a control device of the air conditioning system. The air conditioning system may include: the control device of the air conditioning system described above.
Since the processing and functions of the air conditioning system of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the inner side second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form an energy storage system, the inner side first heat exchanger 22, the compressor 13 and the outer side heat exchanger 12 jointly form a refrigeration system, the air valve 26 is arranged in the air duct between the inner side second heat exchanger 23 and the inner side first heat exchanger 22 in the refrigeration system, the air valve 26 is added to enable the inner side heat exchange medium (namely air) to directly flow back to the air outlet (namely the inner side medium outlet two 21 b) of the user side after passing through the air valve 26, the flow path of the inner side heat exchange medium is changed through the air valve 26 according to the state change of the energy storage system, the inner side heat exchange medium (namely air) can directly flow back to the air outlet of the user side after passing through the air valve 26 when the energy storage system is not used, so as to avoid partial energy loss, the cold storage is released when the load of the user side is higher and the temperature rise is quicker when the refrigeration requirement is lower at ordinary times, the problem that the energy storage method in the related scheme can not fully exert the advantages of the energy storage system is solved, and the energy saving effect is improved.
According to an embodiment of the present invention, there is also provided a control method of an air conditioning system corresponding to the air conditioning system, as shown in fig. 4, which is a schematic flow chart of an embodiment of the method of the present invention. The air conditioning system includes: a refrigeration system and an energy storage system. An air valve 26 is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system. The air valve 26 can enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve 26 and the second indoor heat exchanger of the energy storage system and then be output to the first air outlet of the indoor space of the air conditioning system, and can also enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve 26 and then be directly output to the second air outlet of the indoor space of the air conditioning system. A first indoor heat exchanger of the refrigeration system, such as an inboard first heat exchanger 22, and a second indoor heat exchanger of the refrigeration system, such as an inboard second heat exchanger 23. The first outlet is the first inner side medium outlet 21a, and the second outlet is the second inner side medium outlet 21b.
Fig. 2 is a schematic structural diagram of an energy-saving air conditioning system according to an embodiment of the present invention. The energy saving air conditioning system as shown in fig. 2 includes: a system exterior 10 and a system interior 20. The system inner side 20 and the system outer side 10 are both internal structures of the same unit, and the system inner side 20 and the system outer side 10 are separated by a partition.
Specifically, the system exterior 10 includes: an outer heat exchanger 12 and a compressor 13. The flow direction of the heat exchange medium of the outer heat exchanger 12 is the outer heat exchange medium flow direction 11. In the example shown in fig. 2, the system inner side 20 includes: the first inner medium outlet 21a, the second inner medium outlet 21b, the first inner heat exchanger 22, the second inner heat exchanger 23, the power pump 24, the energy storage device 25 and the air valve 26. Therefore, compared with the related scheme, the scheme of the invention not only combines the refrigeration system and the energy storage system into an integrated structure, namely the unit has no branch of an internal unit and an external unit, but also has only one unit which is divided into an internal unit and an external unit, thereby reducing redundant pipe sections, and additionally adding one air valve 26 and one air outlet, which is convenient for realizing the energy-saving control of the energy-saving air-conditioning system.
An exhaust port of the compressor 13 is communicated to a first port of the outside heat exchanger 12. The second port of the outer heat exchanger 12 is communicated to the suction port of the compressor 13 through the inner first heat exchanger 22. The outer heat exchange medium flow direction 11 is a direction from the first port of the outer heat exchanger 12 to the second port of the outer heat exchanger 12. The first port of the inner second heat exchanger 23 is communicated to the second port of the inner second heat exchanger 23 after passing through the power pump 24 and the energy storage device 25. And an air valve 26 located between the inner first heat exchanger 22 and the inner second heat exchanger 23. The inner heat exchange medium flows 21 in the direction from the inner first heat exchanger 22 to the inner second heat exchanger 23. And an inner side medium outlet I21 a which outputs from the inner side second heat exchanger 23. And an inner medium outlet two 21b for outputting the medium from a position between the inner second heat exchanger 23 and the energy storage device 25.
In the example shown in fig. 2, the inner first heat exchanger 22 constitutes a refrigeration system together with the compressor 13 and the outer heat exchanger 12. The refrigerating system has the function that the heat inside the room is absorbed and transferred to the outer heat exchanger 12 by the inner first heat exchanger 22 to be released, so that the inner refrigerating effect is achieved, and the compressor 13 provides power for the whole cycle.
In the example shown in fig. 2, the inner second heat exchanger 23, the power pump 24 and the energy storage device 25 together form an energy storage system. When the heat load of the user side is smaller than the refrigerating capacity generated by the refrigerating system, the energy storage system absorbs a part of the redundant refrigerating capacity generated by the inner side first heat exchanger 22 through the inner side second heat exchanger 23 and stores the refrigerating capacity in the energy storage device 25, and when the heat load of the user side reaches a peak value, the refrigerating capacity in the energy storage device 25 is released through the inner side second heat exchanger 23.
In the example shown in fig. 2, the damper 26 is located between the evaporation side of the refrigeration system (i.e., the inside first heat exchanger 22) and the heat exchanger of the energy storage system (i.e., the inside second heat exchanger 23), and adjusts the flow direction of the inside medium according to the unit state. The damper 26 functions to open or close when the state of the accumulator system changes to change the flow path of the inside heat exchange medium. Thus, by controlling the flow path with the damper 26, partial energy losses can be avoided when the energy storage system is not in use.
As shown in fig. 2, the specific form of the outer heat exchange medium flow direction 11 is as follows: the heat exchange medium from the outside of the unit flows through the outside heat exchanger 12 and back to the outside. The inner first heat exchanger 22 and the damper 26 are located in the same passage, and thereafter, are divided into two flow paths. Therefore, the specific form of the inner heat exchange medium flow direction 21 is as follows: air from the user side firstly exchanges heat through the inner side first heat exchanger 22 and then passes through the adjusting air valve 26, when the energy storage system is opened, the air valve 26 is controlled to enable the air to flow back to the user side from the inner side medium outlet I21 a after the air passes through the air valve 26 and exchanges heat through the inner side second heat exchanger 23, wherein the energy storage system is opened in two ways, namely, cold energy is released into the medium and is absorbed by the medium. Air from the user side passes through the first inner heat exchanger 22 for heat exchange and then passes through the adjusting air valve 26, and when the energy storage system is closed, the air valve 26 is controlled to enable the air to directly flow back to the user side from the second inner medium outlet 21b after passing through the air valve 26.
It should be noted that fig. 2 is only a simplified illustration for facilitating understanding of the described exemplary embodiment of the present invention, and other devices (such as a throttling device and the like) and additional devices (such as a filter and the like) which are not shown in the drawings are not intended to be a framework for limiting the solution of the present invention.
Preferably, the refrigeration system and the energy storage system are integrally arranged to form an integrated system. The outdoor side and the indoor side of the integrated system are separated by a partition plate.
In the scheme of the invention, the integrated system is arranged, and the integrated design is that the refrigerating end and the energy storage end, the refrigerating end and the user end, and the energy storage end and the user end are all in the same channel, are in the same flow and are inward, so that the internal connecting pipe sections are reduced, and the system is simplified. And the wind valve is controlled, so that partial energy loss can be avoided when an energy storage system is not used, and the excellent performance is achieved.
The scheme of the invention provides an energy-saving air conditioning system, which combines a refrigeration system and an energy storage system into an integrated system, and the inner side and the outer side of the integrated system are separated by a partition plate. Therefore, the use of the connecting pipeline is greatly reduced, the energy loss of the energy storage system in the related scheme caused by long pipeline connection is reduced, the cost addition caused by factors such as equipment occupation is greatly reduced, and the method is simple, convenient and more beneficial to popularization. Therefore, the problems of more refrigeration and energy storage system equipment and large occupied area in related schemes are solved, and the problem of large energy consumption caused by refrigeration and energy storage system pipelines in related schemes is also solved.
The control method of the air conditioning system comprises the following steps: step S110 and step S120.
At step S110, a current temperature parameter of the air conditioning system is acquired.
Specifically, the current indoor temperature of the air conditioning system, the current indoor return air temperature of the air conditioning system, the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, the current outlet air temperature of the first air outlet of the air conditioning system, and the current pipe temperature of the first indoor heat exchanger of the refrigeration system are obtained. The current indoor temperature of the air conditioning system, such as the user side temperature 1. And the current indoor return air temperature of the air conditioning system is 2 as the temperature of the indoor side return air inlet of the unit. The current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, for example, the temperature 3 between the first indoor heat exchanger 22 and the second indoor heat exchanger 23 inside the unit. The current tube temperature of the first indoor heat exchanger of the refrigeration system is, for example, the evaporator tube temperature of the refrigeration system, that is, the temperature 5.
In step S120, an on-off state of at least one of the energy storage system and the refrigeration system is controlled according to a current temperature parameter of the air conditioning system, and the air valve 26 is controlled according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet.
Specifically, according to at least one of the current indoor temperature of the air conditioning system, the current indoor return air temperature of the air conditioning system, the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, the current outlet air temperature of the first air outlet of the air conditioning system, and the current pipe temperature of the first indoor heat exchanger of the refrigeration system, the opening and closing state of at least one of the energy storage system and the refrigeration system is controlled, and the air valve 26 is controlled according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
Fig. 3 is a flowchart illustrating a control method of an energy-saving air conditioning system according to an embodiment of the present invention. As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention includes:
step 1, firstly, a temperature sensor is needed to measure the temperature of a user side 1, and a temperature sensor is needed to measure the temperature of a return air inlet on the indoor side of the unit 2, the temperature between a first heat exchanger 22 on the inner side of the unit and a second heat exchanger 23 on the inner side of the unit 3, the temperature of a first air outlet on the indoor side of the unit 4 and the temperature of an evaporator tube of a refrigerating system, namely the temperature 5.
The damper 26 is in different states according to the opening and closing of the energy storage system. When the air valve 26 is in the state 1, the air valve 26 communicates the inner first heat exchanger 22 and the inner second heat exchanger 23, and closes the passage between the air valve 26 and the inner medium outlet two 21b. When the damper 26 is in the state 2, the damper 26 opens the passage of the second inside medium outlet 21b, and closes the passage of the damper 26 and the second inside heat exchanger 23.
It should be noted that, the two temperature information, i.e., the temperature 1 at the user side and the temperature 2 at the air inlet at the indoor side of the unit, both indicate the temperature at the user side, and the values should be the same or very close to each other, so as to reduce the probability that the temperature error at the user side affects the refrigeration system. The temperature 3 between the inside first heat exchanger 22 and the inside second heat exchanger 23 is the temperature of the air after heat exchange with the indoor first heat exchanger 22 and without heat exchange with the indoor second heat exchanger 23.
The control method of the energy-saving air-conditioning system provided by the scheme of the invention aims to ensure that the energy-saving air-conditioning system can store cold not only in the electricity utilization valley at night, but also in the charge and discharge time at ordinary times, release cold energy when the load on the user side is higher and the temperature rise is faster, reduce the peak load, keep the equipment to stably run, reduce unnecessary energy consumption and improve the energy efficiency of the energy-saving air-conditioning system.
In some embodiments, the current temperature parameters of the air conditioning system include: a current indoor temperature of the air conditioning system.
In step S120, a specific process of controlling an open/close state of at least one of the energy storage system and the refrigeration system according to a current temperature parameter of the air conditioning system, and controlling the air valve 26 according to the open/close state of the energy storage system to control the open/close states of the first air outlet and the second air outlet includes: and controlling a first process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
Referring to the flowchart of fig. 5, a specific process of the first process of controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in step S120 is further described, which includes: step S210 and step S220.
Step S210, when the current temperature parameter of the air conditioning system includes the current indoor temperature of the air conditioning system, and when the current indoor temperature of the air conditioning system is greater than a first set temperature, controlling the refrigeration system to be turned on, for example, controlling a compressor 13 of the refrigeration system to be turned on, so as to turn on the refrigeration system.
Step S220, when the refrigeration system is turned on, further controlling an on-off state of the energy storage system and a turn-off timing of the refrigeration system according to a current temperature parameter of the air conditioning system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
in fig. 3, a first set temperature T1 is a unit design start parameter, preferably 24 ℃, a first set temperature T2 is preferably 5 ℃ ± 1 ℃, a third set temperature T3 is preferably 1 ℃ ± 0.5 ℃, a fourth set temperature T4 is a temperature of 28 ℃ ± 1 ℃ in a state of closing the energy storage system to release cold, a fifth set temperature T5 is a maximum user-side design temperature of 24 ℃, and a sixth set temperature T6 is a unit design shut-off temperature of 17 ℃ to 19 ℃.
And 2, when the temperature sensor detects that the user side temperature 1 exceeds the design temperature, such as a first set temperature and a first set temperature T1 (for example, 24 ℃), starting the refrigeration system, judging the state of the energy storage device 25, such as an energy storage cabinet, through the change of the user side temperature 1, and making a relative response, which can be specifically referred to in step 3 and the control process of each subsequent step.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system.
In step S220, under the condition that the refrigeration system is turned on, further controlling an on-off state of the energy storage system and a turn-off timing of the refrigeration system according to a current temperature parameter of the air conditioning system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet, including: and controlling a second process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
The following further describes, with reference to a schematic flow chart of an embodiment of a second process of controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in the method of the present invention shown in fig. 6, a specific process of controlling the second process of controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in step S220, including: step S310 to step S330.
Step S310, determining whether the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature.
Step S320, if the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature, controlling the energy storage system to start and release cold energy, and controlling the air valve 26 to communicate with the channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and the second indoor heat exchanger of the energy storage system and is output to the first air outlet of the indoor space of the air conditioning system.
Step S330, if the rising value of the current indoor temperature of the air conditioning system in a set time is less than or equal to a second set temperature, or after controlling the air valve 26 to connect the channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, combining the current pipe temperature of the first indoor heat exchanger of the refrigeration system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the on-off state of the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 3, judging whether the rising value of the user side temperature 1 in unit time exceeds a second set temperature T2 (such as 5 ℃): if yes, executing step 4, otherwise executing step 5.
And 4, starting the energy storage device 25 to release cold energy, and adjusting the air valve 26 to be in the state 1.
Specifically, when the change of the user-side temperature 1 in unit time is large, for example, the rise value in unit time exceeds a second set temperature T2 (for example, 5 ℃), which indicates that the battery in the energy storage cabinet is in a rapid charging and discharging state at this time, and belongs to a case where the load is high, at this time, the energy storage device 25 is opened to release cold energy, and the air valve 26 is adjusted to the state 1 to communicate the energy storage system and the refrigeration system, and then step 5 is executed.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current indoor return air temperature of the air conditioning system.
Combining the current tube temperature of the first indoor heat exchanger of the refrigeration system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet, including: and controlling a third process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
Referring to fig. 7, a flowchart of an embodiment of a third process for controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in the method of the present invention further illustrates a specific process of the third process for controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in step S330, including: step S410 to step S450.
Step S410, determining whether a change value of a current tube temperature of a first indoor heat exchanger of the refrigeration system within a set time is less than a third set temperature.
Step S420, if the change value of the current indoor temperature of the first indoor heat exchanger of the refrigeration system in the set time is greater than or equal to the third set temperature, returning to re-determine whether the rising value of the current indoor temperature of the air conditioning system in the set time is greater than the second set temperature.
Step S420, if the variation value of the current tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is less than the third set temperature, determining whether the current indoor return air temperature of the air conditioning system is less than a fourth set temperature:
and step S430, if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, returning to continuously control the energy storage system to be started and release cold energy, and controlling the air valve 26 to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of the indoor space of the air conditioning system after passing through the air valve 26 and the second indoor heat exchanger of the energy storage system.
And step S440, if the current indoor return air temperature of the air-conditioning system is lower than a fourth set temperature, controlling the energy storage system to close and stop releasing the cold quantity, and controlling the air valve 26 to close a channel between the air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and then is directly output to the second air outlet of the indoor space of the air-conditioning system. And then, combining the current indoor return air temperature of the air conditioning system, controlling the on-off state of the energy storage system and the closing time of the refrigerating system, and controlling the air valve 26 according to the on-off state of the energy storage system so as to control the on-off states of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 5, when the rising value of the user side temperature 1 is less than or equal to the second set temperature T2 (for example, 5 ℃) in the unit time, the next step is performed, that is, whether the change value of the evaporator tube temperature of the refrigeration system, that is, the temperature 5 is less than the third set temperature T3 (for example, 1 ℃): if yes, executing step 6, otherwise returning to step 3.
And 6, when the change value of the temperature of the evaporator tube of the refrigerating system, namely the temperature 5, is less than a third set temperature T3 (for example, 1 ℃), the refrigerating system runs stably, the released cold quantity of the refrigerating system gradually occupies a dominant position, the temperature of the energy storage device 25 such as the energy storage cabinet begins to drop, and then the step 7 is executed.
When the variation value of the evaporator tube temperature of the refrigeration system, i.e. the temperature 5, is not less than the third set temperature T3 (e.g. 1 ℃), it is indicated that the refrigeration system is not operating smoothly, and in order to prevent the rise value of the user side temperature 1 per unit time from being greater than the second set temperature T2 (e.g. 5 ℃) when the refrigeration system is waiting to operate smoothly, the step 3 needs to be returned again to determine whether the rise value of the user side temperature 1 per unit time is less than the second set temperature T2 (e.g. 5 ℃).
Step 7, judging whether the temperature 2 of the indoor side air return inlet of the unit is lower than a fourth set temperature T4 (such as 28 ℃): if yes, go to step 8, otherwise go to step 4.
Step 8, close the energy storage system and adjust the damper 26 to state 2.
When the temperature of the indoor air return inlet of the unit is less than the fourth set temperature T4 (for example, 28 ℃), the energy storage system can be closed to stop releasing cold, the air valve is adjusted to be in the state 2, the cooling of the refrigeration system is enough at the moment, if the energy storage system is not started in the previous step, the step of closing the energy storage system and adjusting the state of the air valve is skipped, and then the step 9 is executed.
After the refrigeration system runs stably, when the temperature 2 of the air return opening at the indoor side of the unit is higher than the fourth set temperature T4 (for example, 28 ℃), it indicates that a large amount of heat load is still accumulated at the user side, and at this time, step 4 needs to be executed, that is, the energy storage system is opened to release cold energy and the air valve is adjusted to the state 1, so as to help to quickly reduce the temperature at the user side.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system, and the current air outlet temperature of the first air outlet of the air conditioning system. The energy storage system has an energy storage device 25.
The method includes the steps of controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current indoor return air temperature of the air conditioning system, and controlling the air valve 26 to control the on-off states of the first air outlet and the second air outlet according to the on-off state of the energy storage system, and includes the following steps: and controlling the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
Referring to fig. 8, a flowchart of an embodiment of a fourth process for controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in the method of the present invention further illustrates a specific process of the fourth process for controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in step S440, including: step S510 to step S550.
And step S510, determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature.
And step S520, if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device 25 to store cold energy, and controlling the air valve 26 to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to be closed, so that the indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of the indoor space of the air conditioning system after passing through the air valve 26 and the second indoor heat exchanger of the energy storage system. Of course, if the current indoor return air temperature of the air conditioning system is greater than or equal to the fifth set temperature, waiting is performed, that is, it is continuously determined whether the current indoor return air temperature of the air conditioning system is less than the fifth set temperature.
In step S530, it is determined whether the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature.
And step S540, if the current indoor return air temperature of the air-conditioning system is greater than a fifth set temperature, reducing the flow of the cold energy stored by the energy storage device 25, and then returning to determine whether the current indoor return air temperature of the air-conditioning system is less than or equal to the fifth set temperature again.
Step S550, if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 9, judging whether the temperature 2 of the indoor side air return inlet of the unit is lower than a fifth set temperature T5 (for example, 24 ℃): if yes, step 10 is executed, otherwise, the process continues to wait in step 9.
Step 10, when the temperature 2 of the indoor side air return inlet of the unit is lower than a fifth set temperature T5 (for example, 24 ℃), it is indicated that the refrigerating capacity of the refrigerating system exceeds the heat load in the energy storage cabinet, at this time, the energy storage device 25 can be opened to store the refrigerating capacity and the air valve is adjusted to the state 1 to communicate the energy storage system and the refrigerating system, but the stored refrigerating capacity cannot exceed the difference value between the refrigerating capacity of the refrigerating system and the heat load of the energy storage cabinet, and then step 11 is executed.
Step 11, judging whether the indoor side return air inlet temperature 2 is less than or equal to a fifth set temperature T5 (such as 24 ℃): if so, executing the step 12, otherwise, adjusting the cold energy of the energy storage system and returning to the step 11.
When the temperature 2 of the indoor side air return inlet is higher than the fifth set temperature T5 (such as 24 ℃), the flow of the energy storage system needs to be reduced by adjusting the power pump 24 so as to reduce the cold absorbed by the energy storage system, and when the temperature 2 of the indoor side air return inlet is lower than or equal to the fifth set temperature T5 (such as 24 ℃), the cold is continuously stored.
In some embodiments, combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current outlet air temperature of the first air outlet of the air conditioning system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve 26 according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet includes: and controlling the fifth process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameters.
With reference to the flowchart of fig. 9, a specific process of the fifth process of controlling the energy storage system, the refrigeration system, and the air valve according to the current temperature parameter in step S550 is further described, which includes: step S610 to step S640.
Step S610, determining whether a current outlet air temperature of a first air outlet of the air conditioning system is less than or equal to a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system.
Step S620, if the current air-out temperature of the first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, controlling the air valve 26 to close the channel between the air inlet of the air duct and the first air outlet of the air duct and to connect the channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve 26 and then is directly output to the second air outlet of the indoor space of the air conditioning system. Of course, if the current air-out temperature of the first air outlet of the air-conditioning system is greater than the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, waiting, that is, continuously determining whether the current air-out temperature of the first air outlet of the air-conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system.
In step S630, it is determined whether the current indoor return air temperature of the air conditioning system is less than a sixth set temperature.
And step S640, if the current indoor return air temperature of the air conditioning system is lower than a sixth set temperature, controlling the refrigeration system to be closed. Of course, if the current indoor return air temperature of the air conditioning system is greater than or equal to the sixth set temperature, waiting is performed, that is, it is continuously determined whether the current indoor return air temperature of the air conditioning system is less than the sixth set temperature.
The relationship between the first set temperature and the sixth set temperature can be determined according to different scenes. For example: the first set temperature is greater than the second set temperature, the second set temperature is greater than the third set temperature, the fourth set temperature is greater than the first set temperature, the fifth set temperature is less than or equal to the first set temperature, and the sixth set temperature is less than the fifth set temperature. For another example: the first set point temperature, the fourth set point temperature, and the fifth set point temperature may be the same, such as 24 ℃.
As shown in fig. 3, the method for controlling an energy saving air conditioning system according to the present invention further includes:
step 12, judging whether the indoor side first air outlet temperature 4 is less than or equal to the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23: if yes, go to step 13, otherwise continue to wait at step 12.
And step 13, when the temperature 4 of the indoor side first air outlet is higher than the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23, the energy storage system absorbs cold. When the temperature of the indoor side first air outlet 4 is equal to or less than the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23, the cold storage amount of the energy storage system is saturated and no cold storage amount is required, at this time, the energy storage system is closed, the air valve is adjusted to be in the state 2, and then the step 14 is executed.
And step 14, finally, when the temperature 2 of the indoor side air return inlet is less than the sixth set temperature T6 (such as 19 ℃), the refrigerating system can be closed.
The scheme of the invention also provides a control method of the energy-saving air-conditioning system, so that the energy-saving air-conditioning system can accumulate cold not only in the electricity utilization valley at night, but also in the ordinary time when the refrigeration requirement is low. If the battery in the energy storage cabinet does not change in the charging and discharging state, the load generated by the battery is far lower than the load during charging. At the moment, a part of the refrigerating capacity of the refrigerating system is used in the energy storage cabinet, and a part of the refrigerating capacity of the refrigerating system is used for cold accumulation in the energy storage system. When the load of the user side is high and the temperature rise is fast, the cold quantity is released to reduce the peak load, so that the equipment is kept to run stably, and the energy efficiency of the energy-saving air conditioning system is improved. Therefore, the control method of the energy-saving air conditioning system is suitable for an integrated system formed by combining a refrigerating system and an energy storage system, when the refrigeration requirement is low at ordinary times, cold energy is released when the load of the cold storage is higher at a user side and the temperature rise is faster, the problem that the energy storage method cannot fully exert the advantages of the energy storage system in related schemes is solved, and the energy-saving effect is improved.
Since the processes and functions implemented by the method of the present embodiment substantially correspond to the embodiments, principles and examples of the air conditioning system, reference may be made to the related descriptions in the embodiments without being repeated herein.
By adopting the technical scheme of the embodiment, the inner side second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form an energy storage system, the inner side first heat exchanger 22, the compressor 13 and the outer side heat exchanger 12 jointly form a refrigerating system, the air valve 26 is arranged in the air duct between the inner side second heat exchanger 23 and the inner side first heat exchanger 22 in the energy storage system, the air outlet (namely the inner side medium outlet two 21 b) of the inner side heat exchange medium (namely air) which directly flows back to the user side after passing through the air valve 26 is increased, the flow path of the inner side heat exchange medium is changed through the air valve 26 according to the state change of the energy storage system, the inner side heat exchange medium (namely air) can directly flow back to the air outlet of the user side after passing through the air valve 26 when the energy storage system is not used, so as to avoid partial energy loss, the energy-saving air conditioning system can store cold not only at low energy consumption at night but also at ordinary times, and charge and discharge cold can be stored, and charge and discharge, and discharge the energy of the energy-saving air conditioning system is improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (14)

1. A control device of an air conditioning system, characterized in that the air conditioning system includes: a refrigeration system and an energy storage system; an air valve (26) is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system; the air valve (26) can enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve (26) and the second indoor heat exchanger of the energy storage system and then be output to the first air outlet of the indoor space of the air conditioning system, and can also enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve (26) and then be directly output to the second air outlet of the indoor space of the air conditioning system;
the control device of the air conditioning system comprises: an acquisition unit and a control unit; wherein the content of the first and second substances,
the acquisition unit is configured to acquire a current temperature parameter of the air conditioning system;
the control unit is configured to control the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and control the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
2. The control device of an air conditioning system according to claim 1, wherein the refrigeration system and the energy storage system are integrally provided to form an integrated system; the outdoor side and the indoor side of the integrated system are separated by a partition plate.
3. The control device of air conditioning system according to claim 1 or 2, wherein the current temperature parameter of the air conditioning system includes: a current indoor temperature of the air conditioning system;
the control unit controls the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and controls the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet, and the control unit comprises:
controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is higher than a first set temperature;
and under the condition that the refrigerating system is started, the opening and closing states of the energy storage system and the closing time of the refrigerating system are further controlled according to the current temperature parameter of the air conditioning system, and the air valve (26) is controlled according to the opening and closing states of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
4. The control device of an air conditioning system as claimed in claim 3, wherein the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system;
the control unit further controls the on-off state of the energy storage system and the closing time of the refrigeration system according to the current temperature parameter of the air conditioning system, and controls the air valve (26) according to the on-off state of the energy storage system so as to control the on-off state of the first air outlet and the second air outlet, and the control unit comprises:
determining whether the rising value of the current indoor temperature of the air conditioning system in a set time is greater than a second set temperature;
if the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature, controlling the energy storage system to be started and release cold energy, and controlling the air valve (26) to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve (26) and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system;
if the rising value of the current indoor temperature of the air conditioning system in the set time is less than or equal to a second set temperature, or after the air valve (26) is controlled to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, the opening and closing state of the energy storage system and the closing time of the refrigeration system are controlled by combining the current pipe temperature of the first indoor heat exchanger of the refrigeration system, and the air valve (26) is controlled according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
5. The control device of air conditioning system according to claim 4, wherein the current temperature parameter of the air conditioning system further comprises: the current indoor return air temperature of the air conditioning system;
the control unit, combine the current pipe temperature of the first indoor heat exchanger of refrigerating system, control the open and close state of energy storage system and the closing opportunity of refrigerating system to control blast gate (26) according to the open and close state of energy storage system in order to control the open and close state of first air outlet and second air outlet, include:
determining whether a change value of a current tube temperature of a first indoor heat exchanger of the refrigeration system in a set time is less than a third set temperature;
if the change value of the current indoor temperature of the first indoor heat exchanger of the refrigeration system in the set time is greater than or equal to the third set temperature, returning to determine whether the rising value of the current indoor temperature of the air-conditioning system in the set time is greater than the second set temperature;
if the change value of the current pipe temperature of the first indoor heat exchanger of the refrigerating system in the set time is less than the third set temperature, determining whether the current indoor return air temperature of the air-conditioning system is less than a fourth set temperature:
if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, returning to continuously control the energy storage system to be started and release cold energy, and controlling the air valve (26) to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve (26) and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system;
if the current indoor return air temperature of the air conditioning system is lower than a fourth set temperature, the energy storage system is controlled to be closed and the cold energy is stopped to be released, and the air valve (26) is controlled to close a channel between an air inlet of the air duct and a first air outlet of the air duct and to be communicated with a channel between the air inlet of the air duct and a second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve (26); and then, controlling the opening and closing state of the energy storage system and the closing time of the refrigerating system by combining the current indoor return air temperature of the air conditioning system, and controlling the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
6. The control device of an air conditioning system as claimed in claim 5, wherein the current temperature parameter of the air conditioning system further comprises: the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, and the current air outlet temperature of the first air outlet of the air conditioning system; the energy storage system has an energy storage device (25);
the control unit combines the current indoor return air temperature of the air conditioning system, controls the on-off state of the energy storage system and the closing time of the refrigeration system, and controls the air valve (26) according to the on-off state of the energy storage system so as to control the on-off state of the first air outlet and the second air outlet, and the control unit comprises:
determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature;
if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device (25) to store cold, and controlling the air valve (26) to be communicated with a channel between an air inlet of the air duct and a first air outlet of the air duct and to be closed, so that an indoor heat exchange medium input from the air inlet of the air duct is output to a first air outlet of an indoor space of the air conditioning system after passing through the air valve (26) and a second indoor heat exchanger of the energy storage system;
determining whether the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature;
if the current indoor return air temperature of the air-conditioning system is higher than a fifth set temperature, reducing the flow of cold energy stored by the energy storage device (25), and then returning to determine whether the current indoor return air temperature of the air-conditioning system is lower than or equal to the fifth set temperature again;
and if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, controlling the opening and closing state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and controlling the air valve (26) according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
7. The control device of the air conditioning system according to claim 6, wherein the control unit, in combination with a current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system and a current outlet air temperature of a first outlet of the air conditioning system, controls an on-off state of the energy storage system and a closing time of the refrigeration system, and controls the air valve (26) according to the on-off state of the energy storage system to control the on-off state of the first outlet and the second outlet, includes:
determining whether the current outlet air temperature of a first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system;
if the current outlet air temperature of the first air outlet of the air-conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system, controlling the air valve (26) to close a channel between an air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air-conditioning system after passing through the air valve (26);
determining whether the current indoor return air temperature of the air conditioning system is less than a sixth set temperature;
and if the current indoor return air temperature of the air conditioning system is lower than a sixth set temperature, controlling the refrigeration system to be closed.
8. An air conditioning system, comprising: the control device of an air conditioning system as claimed in any one of claims 1 to 7.
9. A control method of an air conditioning system, characterized in that the air conditioning system includes: a refrigeration system and an energy storage system; an air valve (26) is arranged in an air duct between the first indoor heat exchanger of the refrigerating system and the second indoor heat exchanger of the energy storage system; the air valve (26) can enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve (26) and the second indoor heat exchanger of the energy storage system and then be output to a first air outlet of the indoor space of the air conditioning system, and can also enable the indoor heat exchange medium input from the air inlet of the air duct to pass through the air valve (26) and then be directly output to a second air outlet of the indoor space of the air conditioning system;
the control method of the air conditioning system comprises the following steps:
acquiring a current temperature parameter of the air conditioning system;
and controlling the opening and closing state of at least one of the energy storage system and the refrigeration system according to the current temperature parameter of the air conditioning system, and controlling the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet.
10. The method for controlling an air conditioning system according to claim 9, wherein the current temperature parameter of the air conditioning system comprises: a current indoor temperature of the air conditioning system;
according to the current temperature parameter of the air conditioning system, controlling the opening and closing state of at least one of the energy storage system and the refrigeration system, and controlling the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet, wherein the method comprises the following steps:
controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is higher than a first set temperature;
and under the condition that the refrigerating system is started, further controlling the opening and closing states of the energy storage system and the closing time of the refrigerating system according to the current temperature parameter of the air conditioning system, and controlling the air valve (26) according to the opening and closing states of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
11. The method for controlling an air conditioning system according to claim 10, wherein the current temperature parameter of the air conditioning system further comprises: a current tube temperature of a first indoor heat exchanger of the refrigeration system;
further according to the current temperature parameter of the air conditioning system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve (26) according to the on-off state of the energy storage system to control the on-off state of the first air outlet and the second air outlet, including:
determining whether the rising value of the current indoor temperature of the air conditioning system in a set time is greater than a second set temperature;
if the rising value of the current indoor temperature of the air conditioning system in the set time is greater than a second set temperature, controlling the energy storage system to be started and release cold energy, and controlling the air valve (26) to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve (26) and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system;
if the rising value of the current indoor temperature of the air conditioning system in the set time is less than or equal to a second set temperature, or after the air valve (26) is controlled to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct, the opening and closing state of the energy storage system and the closing time of the refrigeration system are controlled by combining the current pipe temperature of the first indoor heat exchanger of the refrigeration system, and the air valve (26) is controlled according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
12. The method for controlling an air conditioning system according to claim 11, wherein the current temperature parameter of the air conditioning system further comprises: the current indoor return air temperature of the air conditioning system;
combining the current tube temperature of a first indoor heat exchanger of the refrigeration system, controlling the on-off state of the energy storage system and the closing time of the refrigeration system, and controlling the air valve (26) according to the on-off state of the energy storage system so as to control the on-off states of the first air outlet and the second air outlet, wherein the method comprises the following steps:
determining whether a change value of a current tube temperature of a first indoor heat exchanger of the refrigeration system in a set time is less than a third set temperature;
if the change value of the current indoor temperature of the first indoor heat exchanger of the refrigerating system in the set time is greater than or equal to a third set temperature, returning to determine whether the rising value of the current indoor temperature of the air-conditioning system in the set time is greater than the second set temperature;
if the change value of the current pipe temperature of the first indoor heat exchanger of the refrigeration system in the set time is less than the third set temperature, determining whether the current indoor return air temperature of the air-conditioning system is less than the fourth set temperature:
if the current indoor return air temperature of the air conditioning system is greater than or equal to a fourth set temperature, returning to continuously control the energy storage system to be started and release cold energy, and controlling the air valve (26) to be communicated with a channel between the air inlet of the air duct and the first air outlet of the air duct and to close the channel between the air inlet of the air duct and the second air outlet of the air duct so that the indoor heat exchange medium input from the air inlet of the air duct passes through the air valve (26) and the second indoor heat exchanger of the energy storage system and then is output to the first air outlet of the indoor space of the air conditioning system;
if the current indoor return air temperature of the air conditioning system is lower than a fourth set temperature, the energy storage system is controlled to be closed and the cold energy is stopped to be released, and the air valve (26) is controlled to close a channel between an air inlet of the air duct and a first air outlet of the air duct and to be communicated with a channel between the air inlet of the air duct and a second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve (26); and then, combining the current indoor return air temperature of the air conditioning system, controlling the opening and closing state of the energy storage system and the closing time of the refrigerating system, and controlling the air valve (26) according to the opening and closing state of the energy storage system so as to control the opening and closing states of the first air outlet and the second air outlet.
13. The method for controlling an air conditioning system according to claim 12, wherein the current temperature parameter of the air conditioning system further comprises: the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, and the current air outlet temperature of the first air outlet of the air conditioning system; the energy storage system has an energy storage device (25);
the current indoor return air temperature of the air conditioning system is combined, the opening and closing state of the energy storage system and the closing time of the refrigerating system are controlled, and the air valve (26) is controlled according to the opening and closing state of the energy storage system so as to control the opening and closing state of the first air outlet and the second air outlet, and the method comprises the following steps:
determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature;
if the current indoor return air temperature of the air conditioning system is lower than a fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device (25) to store cold, and controlling the air valve (26) to be communicated with a channel between an air inlet of the air duct and a first air outlet of the air duct and to be closed, so that an indoor heat exchange medium input from the air inlet of the air duct is output to a first air outlet of an indoor space of the air conditioning system after passing through the air valve (26) and a second indoor heat exchanger of the energy storage system;
determining whether the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature;
if the current indoor return air temperature of the air-conditioning system is higher than a fifth set temperature, reducing the flow of cold energy stored by the energy storage device (25), and then returning to determine whether the current indoor return air temperature of the air-conditioning system is lower than or equal to the fifth set temperature again;
and if the current indoor return air temperature of the air conditioning system is less than or equal to a fifth set temperature, controlling the opening and closing state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current air outlet temperature of the first air outlet of the air conditioning system, and controlling the air valve (26) according to the opening and closing state of the energy storage system to control the opening and closing state of the first air outlet and the second air outlet.
14. The method for controlling the air conditioning system according to claim 13, wherein the step of controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system and the current outlet air temperature of the first outlet port of the air conditioning system, and controlling the air valve (26) according to the on-off state of the energy storage system to control the on-off state of the first outlet port and the second outlet port comprises:
determining whether the current outlet air temperature of a first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between a first indoor heat exchanger of the refrigeration system and a second indoor heat exchanger of the energy storage system;
if the current air outlet temperature of the first air outlet of the air conditioning system is less than or equal to the current heat exchange temperature between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, controlling the air valve (26) to close a channel between an air inlet of the air duct and the first air outlet of the air duct and to connect a channel between the air inlet of the air duct and the second air outlet of the air duct, so that the indoor heat exchange medium input from the air inlet of the air duct directly outputs to the second air outlet of the indoor space of the air conditioning system after passing through the air valve (26);
determining whether the current indoor return air temperature of the air conditioning system is less than a sixth set temperature;
and if the current indoor return air temperature of the air conditioning system is lower than a sixth set temperature, controlling the refrigeration system to be closed.
CN202210816568.5A 2022-07-12 2022-07-12 Control device and method of air conditioning system and air conditioning system Active CN115200121B (en)

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