CN115200121B - 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
CN115200121B
CN115200121B CN202210816568.5A CN202210816568A CN115200121B CN 115200121 B CN115200121 B CN 115200121B CN 202210816568 A CN202210816568 A CN 202210816568A CN 115200121 B CN115200121 B CN 115200121B
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China
Prior art keywords
air
temperature
energy storage
conditioning system
current
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CN202210816568.5A
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Chinese (zh)
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CN115200121A (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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Classifications

    • 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 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 valve is arranged in the air duct of the energy storage system and the air duct of the refrigerating system, and the air outlet is additionally arranged, so that the flow path of the heat exchange medium at the inner side can be changed according to the state change of the energy storage system, and the energy storage system can play a larger 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 method of an air conditioning system and the air conditioning system, in particular to a control device and method of an energy-saving air conditioning system and the energy-saving air conditioning system.
Background
With the progress of the age, industries such as new energy and the like are actively developed, the installed capacity of wind power, photoelectricity and the like (namely the installed capacity of a power plant and the capacity of a power station) is rapidly increased, and the importance of an energy storage system is increased. In the air conditioning system in the related scheme, the energy storage system stores cold for the energy storage device in a period that the outdoor temperature is low at night and the electricity consumption is relatively low, and discharges cold in the peak value of the electricity consumption in the daytime, so that the load of the power system in the peak value is reduced to a certain extent. The energy storage method of the energy storage system has a better peak clipping and valley filling effect on the energy storage cabinet with constant heating value or the energy storage cabinet with obvious change trend of heating value, but the energy storage method 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 foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention aims to provide a control device, a control method and an air conditioning system of an air conditioning system, which are used for solving the problems that in the air conditioning system, an energy storage system stores cold for the energy storage device in a period of low outdoor temperature at night and low electricity consumption, and an energy storage mode of releasing cold for the energy storage device in a period of electricity consumption peak in daytime only reduces the burden of an electric system in a period of time, and the energy storage system does not play a role in the energy storage system beyond the period of time, so that the energy storage system has larger use limitation and is unfavorable for energy saving.
The invention provides a control device of an air conditioning system, comprising: 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 refrigeration system and the second indoor heat exchanger of the energy storage system; the air valve can enable indoor heat exchange medium input from the air inlet of the air duct to be 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, and also enable indoor heat exchange medium input from the air inlet of the air duct to be directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; the control device of the air conditioning system comprises: an acquisition unit and a control unit; the acquisition unit is configured to acquire the current temperature parameter of the air conditioning system; the control unit is configured to control 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 control 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.
In some embodiments, 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 board.
In some embodiments, the current temperature parameter of the air conditioning system comprises: the 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 refrigerating system according to the current temperature parameter of the air conditioning system, and controls the air valve to control the on-off state of the first air outlet and the second air outlet according to the on-off state of the energy storage system, and comprises: controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is greater than a first set temperature; and under the condition that the refrigerating system is started, further controlling the starting and stopping state 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 starting and stopping state of the energy storage system so as to control the starting and stopping 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: the 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 refrigerating 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, and the control unit comprises: determining whether a rising value of a current indoor temperature of the air conditioning system within a set time is greater than a second set temperature; if the current indoor temperature of the air conditioning system is higher than the second set temperature in the set time, controlling the energy storage system to open 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 to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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 current indoor temperature of the air conditioning system is smaller than or equal to the second set temperature in the set time, 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, the current pipe temperature of the first indoor heat exchanger of the refrigerating 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.
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 is used for controlling the opening and closing states of the energy storage system and the closing time of the refrigerating system by combining the current tube temperature of the first indoor heat exchanger of the refrigerating system, 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, and comprises the following steps: 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 smaller than a third set temperature; if the change value of the current tube temperature of the first indoor heat exchanger of the refrigerating 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 tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is smaller than the third set temperature, determining whether the current indoor return air temperature of the air conditioning system is smaller than the fourth set temperature: if the current indoor return air temperature of the air conditioning system is greater than or equal to the fourth set temperature, returning to continuously control the energy storage system to open and release cold energy, controlling the air valve to be communicated with a channel between the air inlet of the air channel and the first air outlet of the air channel and to close a channel between the air inlet of the air channel and the second air outlet of the air channel, so that an indoor heat exchange medium input from the air inlet of the air channel is output to the first air outlet of an 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 current indoor return air temperature of the air conditioning system is smaller than the fourth set temperature, the energy storage system is controlled to be closed and stop releasing cold energy, the air valve is controlled to close a channel between the air inlet of the air duct and the first air outlet of the air duct and to be communicated with a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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 states 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 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: 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 is provided with an energy storage device; the control unit is used for controlling the opening and closing states of the energy storage system and the closing time of the refrigerating system in combination with the current indoor return air temperature of the air conditioning system, 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, and 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 smaller than the fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device to store cold energy, controlling the air valve to be connected with a channel between the air inlet of the air channel and the first air outlet of the air channel and to close a channel between the air inlet of the air channel and the second air outlet of the air channel, so that indoor heat exchange medium input from the air inlet of the air channel 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; 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 greater than the fifth set temperature, reducing the flow of cold stored by the energy storage device, and 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; if the current indoor return air temperature of the air conditioning system is smaller than or equal to the fifth set temperature, the opening and closing states of the energy storage system and the closing time of the refrigerating system are controlled by combining 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 and the current air outlet temperature of the first air outlet of the air conditioning system, and the air valve 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.
In some embodiments, 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 air outlet 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 air outlet 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 smaller 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 to close a 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 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 smaller than the 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 comprising: the control device of the air conditioning system is described above.
In accordance with another aspect of the present invention, there is provided a control method of 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 refrigeration system and the second indoor heat exchanger of the energy storage system; the air valve can enable indoor heat exchange medium input from the air inlet of the air duct to be 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, and also enable indoor heat exchange medium input from the air inlet of the air duct to be directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve; the control method of the air conditioning system comprises the following steps: acquiring the 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 refrigerating 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: the current indoor temperature of the air conditioning system; according to the current temperature parameter of the air conditioning system, controlling the on-off state of at least one of the energy storage system and the refrigerating system, and controlling 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, comprising: controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is greater than a first set temperature; and under the condition that the refrigerating system is started, further controlling the starting and stopping state 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 starting and stopping state of the energy storage system so as to control the starting and stopping 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: the 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 refrigerating system, and controlling 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 a rising value of a current indoor temperature of the air conditioning system within a set time is greater than a second set temperature; if the current indoor temperature of the air conditioning system is higher than the second set temperature in the set time, controlling the energy storage system to open 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 to close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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 current indoor temperature of the air conditioning system is smaller than or equal to the second set temperature in the set time, 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, the current pipe temperature of the first indoor heat exchanger of the refrigerating 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.
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 method for controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current tube temperature of the first indoor heat exchanger 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 comprises the following steps: 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 smaller than a third set temperature; if the change value of the current tube temperature of the first indoor heat exchanger of the refrigerating 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 tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is smaller than the third set temperature, determining whether the current indoor return air temperature of the air conditioning system is smaller than the fourth set temperature: if the current indoor return air temperature of the air conditioning system is greater than or equal to the fourth set temperature, returning to continuously control the energy storage system to open and release cold energy, controlling the air valve to be communicated with a channel between the air inlet of the air channel and the first air outlet of the air channel and to close a channel between the air inlet of the air channel and the second air outlet of the air channel, so that an indoor heat exchange medium input from the air inlet of the air channel is output to the first air outlet of an 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 current indoor return air temperature of the air conditioning system is smaller than the fourth set temperature, the energy storage system is controlled to be closed and stop releasing cold energy, the air valve is controlled to close a channel between the air inlet of the air duct and the first air outlet of the air duct and to be communicated with a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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 states 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 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: 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 is provided with an energy storage device; the method for controlling the on-off 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 on-off state of the energy storage system to control the on-off states of the first air outlet and the second air outlet 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 smaller than the fifth set temperature, controlling the energy storage system to be started and controlling the energy storage device to store cold energy, controlling the air valve to be connected with a channel between the air inlet of the air channel and the first air outlet of the air channel and to close a channel between the air inlet of the air channel and the second air outlet of the air channel, so that indoor heat exchange medium input from the air inlet of the air channel 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; 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 greater than the fifth set temperature, reducing the flow of cold stored by the energy storage device, and 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; if the current indoor return air temperature of the air conditioning system is smaller than or equal to the fifth set temperature, the opening and closing states of the energy storage system and the closing time of the refrigerating system are controlled by combining 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 and the current air outlet temperature of the first air outlet of the air conditioning system, and the air valve 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.
In some embodiments, 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 air outlet temperature of a first air outlet of the air conditioning system, controlling an on-off state of the energy storage system and a closing timing 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, the method includes: determining whether the current air outlet 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 smaller 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 to close a 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 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 smaller than the sixth set temperature, controlling the refrigeration system to be closed.
Therefore, according to the scheme of the invention, the inner second heat exchanger, the power pump and the energy storage device form an energy storage system together, the inner first heat exchanger, the compressor and the outer heat exchanger form a refrigerating system together, a wind valve is arranged in a wind channel between the inner second heat exchanger and the inner first heat exchanger in the refrigerating system in the energy storage system, and an air outlet (namely an inner medium outlet II) which enables an inner heat exchange medium (namely air) to directly flow back to a user side after passing through the wind valve is additionally arranged, so that the flow path of the inner heat exchange medium is changed through the wind valve according to the state change of the energy storage system, and the inner heat exchange medium (namely air) can directly flow back to the air outlet of the user side after passing through the wind valve when the energy storage system is not used, thereby avoiding partial energy loss; therefore, by arranging the air valve and the air outlet in the air channels of the energy storage system and the refrigerating system, the flow path of the heat exchange medium at the inner side can be changed according to the state change of the energy storage system, so that the energy storage system plays a larger 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 scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a control device of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of an energy-saving air conditioning system according to the present invention;
FIG. 3 is a flow chart illustrating an embodiment of a control method of an energy-saving air conditioning system according to the present invention;
FIG. 4 is a flow chart of an embodiment of a control method of an air conditioning system according to the present invention;
FIG. 5 is a schematic flow chart of an embodiment of a first 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;
FIG. 6 is a flow chart of an embodiment of a second process of controlling the accumulator system, the refrigeration system and the air valve according to the current temperature parameter in the method of the present invention;
FIG. 7 is a flow chart of a third embodiment of a third process of controlling the accumulator system, the refrigeration system and the air valve according to the current temperature parameter in the method of the present invention;
FIG. 8 is a flow chart of a fourth embodiment of a fourth process of controlling an energy storage system, a refrigeration system and a damper according to current temperature parameters in the method of the present invention;
FIG. 9 is a flow chart of a fifth embodiment of the fifth process of controlling the accumulator system, the refrigeration system and the air valve according to the current temperature parameter in the method of the present invention.
In the embodiment of the present invention, reference numerals are as follows, in combination with the accompanying drawings:
10-outside of the system; 11-the flow direction of the outside heat exchange medium; 12-an outside heat exchanger; 13-a compressor; 20-inside the system; 21-the flow direction of the inner side heat exchange medium; 22-an inner first heat exchanger; 23-an inner second heat exchanger; 24. a power pump; 25-an energy storage device; 26-an air valve; 21 a-inside medium outlet one; 21 b-inside 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 specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For the energy storage cabinet of the energy storage system, the whole heat load of the battery energy storage cabinet is not related to the load of a power grid in the daytime or at night, the most direct and most influenced is the state of the battery, namely the heating value of the battery can be increased sharply when the battery is in charge/discharge, the load in the cabinet rises sharply, and the energy storage device is required to release cold energy at the moment. However, the energy storage system in the related scheme can only store and release cold in a specific time, and most of the time cannot accurately provide cold for each time when the cold is needed, so that the effect is not ideal.
In addition, the refrigeration-energy storage system in the related scheme has the advantages of large pipeline energy consumption, more equipment and large occupied area, not only affects the whole energy efficiency, but also increases the initial investment and the operation cost of the refrigeration-energy storage system, so the refrigeration-energy storage system is quite unfavorable for popularization.
It can be seen that, no matter what form the refrigeration and 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 a pipeline (such as an air duct pipeline, a liquid pipeline and the like), the pipeline is increased, the total resistance of the pipeline section is increased, the energy consumption is increased, the pipeline is prolonged, 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, the additional equipment and the energy storage equipment are larger in space where the equipment is needed and larger in occupied area. In the aspect of control, the energy storage device is only subjected to cold storage at night when the outdoor temperature is low and the electricity consumption is relatively low, the burden of the power system in peak value is reduced to a certain extent by cooling during peak value of electricity consumption in daytime, and the energy storage device has certain limitation only for reducing the burden of the power system for a period of time, and does not fully play the role of the energy storage system outside the period of time.
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: refrigeration system and energy storage system. In the air duct between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, an air valve 26 is provided. The air valve 26 may enable the indoor heat exchange medium input from the air inlet of the air duct to be 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 may also enable the indoor heat exchange medium input from the air inlet of the air duct to be 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 energy storage system, such as an inboard second heat exchanger 23. The first air outlet is the first inner medium outlet 21a, and the second air outlet is the second inner medium outlet 21b.
Fig. 2 is a schematic structural diagram of an embodiment of an energy-saving air conditioning system according to the present invention. The energy-saving air conditioning system as shown in fig. 2 includes: a system outside 10 and a system inside 20. The system inner side 20 and the system outer side 10 are both of the same unit internal structure, and the system inner side 20 and the system outer side 10 are separated by a partition board.
Specifically, the system outside 10 includes: an outside heat exchanger 12 and a compressor 13. The heat exchange medium flow direction of the outer heat exchanger 12 is the outer heat exchange medium flow direction 11. In the example shown in fig. 2, the system inside 20 includes: an inner medium outlet I21 a, an inner medium outlet II 21b, an inner first heat exchanger 22, an inner second heat exchanger 23, a power pump 24, an energy storage device 25 and a damper 26. Compared with the related scheme, the scheme of the invention not only combines the refrigerating system and the energy storage system into an integrated structure, namely, the unit has no inner and outer parts and only has one inner and outer parts of the unit, thereby reducing redundant pipe sections, but also adds one air valve 26 and one air outlet, and being convenient for realizing 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. Therefore, the air valve 26 and the air outlet are additionally arranged, so that circulating air does not pass through the indoor second heat exchanger of the energy storage system when the energy storage system is not used, the wind resistance of the system can be reduced, the energy consumption in the system is reduced, the air quantity is larger under the condition of the same fan power, the refrigerating effect is better, and the energy-saving control is facilitated.
Wherein the exhaust port of the compressor 13 is connected to the first port of the outside heat exchanger 12. The second port of the outer heat exchanger 12 is connected to the inlet of the compressor 13 via the inner first heat exchanger 22. The outside heat exchange medium flow direction 11 is the direction from the first port of the outside heat exchanger 12 to the second port of the outside heat exchanger 12. The first port of the inner second heat exchanger 23 is connected to the second port of the inner second heat exchanger 23 via the power pump 24 and the energy storage device 25. The damper 26 is located between the inner first heat exchanger 22 and the inner second heat exchanger 23. The flow of the inner heat exchange medium 21 is in the direction from the inner first heat exchanger 22 to the inner second heat exchanger 23. The first inner medium outlet 21a is output from the second inner heat exchanger 23. The second inner medium outlet 21b is output from a position between the second inner 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 refrigeration system is operated by the inner first heat exchanger 22 to absorb and transfer the heat from the indoor side to the outer heat exchanger 12 for release, thereby achieving the effect of inner refrigeration, and the compressor 13 provides power for the whole cycle.
In the example shown in fig. 2, the inner second heat exchanger 23 forms an energy storage system together with the power pump 24 and the energy storage device 25. The energy storage system is configured to absorb an excessive part of the cold energy generated by the inner first heat exchanger 22 by the inner second heat exchanger 23 when the heat load on the user side is smaller than the refrigerating energy generated by the refrigerating system, store the excessive part in the energy storage device 25, and release the cold energy in the energy storage device 25 by the inner second heat exchanger 23 when the heat load on the user side reaches a peak value.
In the example shown in fig. 2, the damper 26 is located between the evaporation side of the refrigeration system (i.e., the inner first heat exchanger 22) and the heat exchanger of the energy storage system (i.e., the inner second heat exchanger 23), and adjusts the flow direction of the inner medium according to the unit status. The air valve 26 is used to open or close the energy storage system when the state of the energy storage system is changed, so as to change the flow path of the inner heat exchange medium. In this way, the flow passage is controlled by the damper 26, and partial energy loss can be avoided when the energy storage system is not used.
As shown in fig. 2, the outer heat exchange medium flow direction 11 is specifically: the heat exchange medium from the outside of the unit flows through the outside heat exchanger 12 and then flows back to the outside. The inner first heat exchanger 22 and the damper 26 are located in the same passage and thereafter divided into two flow paths. Therefore, the inner heat exchange medium flow direction 21 is specifically: when the energy storage system is opened, the air valve 26 is controlled so that the air flows back to the user side from the first medium outlet 21a after the air passes through the air valve 26 and passes through the second medium outlet 21a when the energy storage system is opened, wherein the energy storage system is opened in two conditions, namely, the cold energy is released into the medium and the cold energy is absorbed from the medium. When the energy storage system is closed, the air valve 26 is controlled so that the air from the user side flows back to the user side directly 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 made for the sake of easy understanding of the described exemplary embodiment of the present invention, and other devices (e.g., a throttle device, etc.) and additional devices (e.g., a filter, etc.), which are not shown in the drawings, do not form a framework for limiting the solution of the present invention.
In some embodiments, 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 board.
In the scheme of the invention, an 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 in the same channel and the same flow, so that the internal connecting pipe sections are reduced, and the system is simplified. And the air valve is used for controlling, so that partial energy loss can be avoided when the energy storage system is not used, and further, the more excellent performance is achieved.
The scheme of the invention provides an energy-saving air conditioning system, which combines a refrigerating 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 board. Therefore, the energy consumption of the energy storage system caused by longer pipeline connection in the related scheme is reduced greatly by using the connecting pipelines, the cost addition caused by factors such as equipment occupation is reduced greatly, and the method is simple and convenient and is more beneficial to popularization. Therefore, the problems of more refrigeration and energy storage system equipment and large occupied area in the related scheme are solved, and the problem of large energy consumption caused by the refrigeration and energy storage system pipeline in the related scheme is also solved.
In an aspect of the present invention, a control device of an air conditioning system includes: an acquisition unit and a control unit.
Wherein the acquisition unit is configured to acquire 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 air outlet temperature of a first air outlet of the air conditioning system, and obtain a current tube temperature of the first indoor heat exchanger of the refrigeration system. The current indoor temperature of the air conditioning system, such as the user side temperature 1. The current indoor return air temperature of the air conditioning system is equal to the temperature 2 of an indoor 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, such as the temperature 3 between the first heat exchanger 22 on the inner side of the unit and the second heat exchanger 23 on the inner side. The current tube temperature of the first indoor heat exchanger of the refrigeration system, such as the refrigeration system evaporator tube temperature, i.e., temperature 5.
The air outlet temperature of the first air outlet is detected, and the energy storage system is started at the moment and is controlled according to the current temperature of the first air outlet.
The control unit is configured to control 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 control 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.
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 state of the first air outlet and the second air outlet.
Fig. 3 is a flow chart of a control method of an energy-saving air conditioning system according to an embodiment of the invention. As shown in fig. 3, a control method of an energy-saving air conditioning system provided by the scheme of the invention includes:
step 1, firstly, a temperature sensor is needed to measure the temperature 1 of a user side, and the temperature sensor is needed to measure the temperature 2 of an indoor air return port of the unit, the temperature 3 between the first heat exchanger 22 and the second heat exchanger 23 on the inner side of the unit, the temperature 4 of a first air outlet on the inner side of the unit, and the temperature 5 of an evaporator tube of a refrigerating system.
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 with the inner first heat exchanger 22 and the inner second heat exchanger 23, and closes the air valve 26 and the passage of the inner medium outlet two 21 b. When the damper 26 is in state 2, the damper 26 opens the passage of the inside medium outlet two 21b and closes the passage of the damper 26 and the inside second heat exchanger 23.
It should be noted that, the temperature information of the user side temperature 1 and the temperature information of the air inlet 2 of the indoor side of the unit indicate the temperature of 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 of the user side affects the refrigeration system. The temperature 3 between the inner first heat exchanger 22 and the inner second heat exchanger 23 is the temperature of the air which 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 when the power consumption is low at night but also outside the normal charge and discharge time, and the peak load is reduced by releasing cold when the load on the user side is higher and the temperature rise is faster, so that the equipment can stably run, the unnecessary energy consumption is reduced, and the energy efficiency of the energy-saving air conditioning system is improved.
In some embodiments, the current temperature parameter of the air conditioning system comprises: the 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 to control the on-off state of the first air outlet and the second air outlet according to the on-off state of the energy storage system, including:
the control unit is specifically further configured to control the refrigeration system to be turned on, for example, to control the compressor 13 of the refrigeration system to be turned on, in a case where the current temperature parameter of the air conditioning system includes the current indoor temperature of the air conditioning system, and in a case where the current indoor temperature of the air conditioning system is greater than the first set temperature.
The control unit is specifically further configured to control the on-off state of the energy storage system and the closing timing of the refrigeration system according to the current temperature parameter of the air conditioning system when the refrigeration system is started, and control 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 control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
in fig. 3, the first set temperature T1 is preferably 24 ℃ for the start-up parameter of the unit design, the second set temperature T2 is preferably 5±1 ℃, the third set temperature T3 is preferably 1±0.5 ℃, the fourth set temperature T4 is 28±1 ℃ for closing the cool releasing state of the energy storage system, the fifth set temperature T5 is 24 ℃ for the maximum design temperature of the user, and the sixth set temperature T6 is 17 ℃ to 19 ℃ for closing the unit design.
And 2, when the temperature sensor detects that the user side temperature 1 exceeds the design temperature, such as the first set temperature, i.e. the first set temperature T1 (e.g. 24 ℃), starting the refrigerating system, judging the state of the energy storage device 25, such as the energy storage cabinet, through the change of the user side temperature 1, and making a relative reaction, wherein the specific reference can be seen from the control process of the step 3 and the following steps.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current tube temperature of the 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 timing of the refrigeration system according to the current temperature parameter of the air conditioning system when the refrigeration system is on, 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, including:
the control unit is specifically further configured to determine whether a rising value of a current indoor temperature of the air conditioning system within a set time is greater than a second set temperature.
The control unit is specifically further configured to control the energy storage system to open and release cold energy and control the air valve 26 to switch on a channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off a channel between the air inlet of the air duct and the second air outlet of the air duct if the rising value of the current indoor temperature of the air conditioning system within a set time is greater than a second set temperature, so that an 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.
The control unit is specifically further configured to control the on-off state of the energy storage system and the off time of the refrigeration system in combination with the current pipe temperature of the first indoor heat exchanger of the refrigeration system after controlling the air valve 26 to switch on a channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off a channel between the air inlet of the air duct and the second air outlet of the air duct, and controlling the air valve 26 to control the on-off state of the first air outlet and the on-off state of the second air outlet according to the on-off state of the energy storage system if the current indoor temperature of the air conditioning system is less than or equal to a second set temperature within a set time.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 3, judging whether the rising value of the user side temperature 1 in unit time exceeds the second set temperature T2 (for example, 5 ℃): if yes, executing the step 4, and if not, executing the step 5.
And 4, opening the energy storage device 25 to release cold energy, and adjusting the air valve 26 to be in a state 1.
Specifically, when the change of the user side temperature 1 in unit time is large, for example, the unit time rising value exceeds the second set temperature T2 (for example, 5 ℃), it indicates that the battery in the energy storage cabinet is in a state of rapid charge and discharge, which belongs to a high load condition, at this time, the energy storage device 25 is opened to release cold energy and the damper 26 is adjusted to the state 1 to connect 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, in combination with the current tube temperature of the first indoor heat exchanger of the refrigeration system, controls the on-off state of the energy storage system and the closing timing 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, including:
the control unit is specifically further configured to determine whether a value of a change in a current tube temperature of the first indoor heat exchanger of the refrigeration system over 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 in 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 the current tube temperature of the first indoor heat exchanger of the refrigeration system is less than the third set temperature within a set time:
The control unit is specifically further configured to return to continuously control the energy storage system to open 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 switch on a channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off a channel between the air inlet of the air duct and the second air outlet of the air duct, so that an 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.
The control unit is specifically further configured to control the energy storage system to close and stop releasing the cold energy if the current indoor return air temperature of the air conditioning system is less than the fourth set temperature, and control 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 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, the opening and closing state of the energy storage system and the closing time of the refrigerating system are controlled by combining the current indoor return air temperature of the air conditioning system, 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 states of the first air outlet and the second air outlet.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 5, when the rising value of the user side temperature 1 in unit time is smaller than or equal to the second set temperature T2 (for example, 5 ℃), the next step is to determine whether the tube temperature of the evaporator of the refrigeration system, that is, the change value of the temperature 5 is smaller than the third set temperature T3 (for example, 1 ℃): if yes, executing the step 6, otherwise, returning to the step 3.
And 6, when the temperature of the evaporator tube of the refrigeration system, namely the change value of the temperature 5, is smaller than a third set temperature T3 (such as 1 ℃), the refrigeration system is indicated to be in stable operation, the released cold of the refrigeration system is dominant gradually, the temperature in the energy storage device 25 such as an energy storage cabinet starts to drop, and then the step 7 is executed.
When the evaporator tube temperature of the refrigeration system, i.e. the variation value of the temperature 5, is not less than the third set temperature T3 (for example, 1 ℃) which indicates that the refrigeration system is not stably operated, in order to prevent the rising value of the user side temperature 1 from being greater than the second set temperature T2 (for example, 5 ℃) in unit time when waiting for the refrigeration system to stably operate, the step 3 needs to be returned again, and whether the rising value of the user side temperature 1 is less than the second set temperature T2 (for example, 5 ℃) in unit time is judged.
Step 7, judging whether the indoor side air return temperature 2 of the unit is smaller than a fourth set temperature T4 (for example, 28 ℃): if yes, executing the step 8, and if not, executing the step 4.
Step 8, closing the energy storage system, and adjusting the air valve 26 to the state 2.
When the temperature of the indoor side air return opening of the unit is less than the fourth set temperature T4 (for example, 28 ℃) the energy storage system can be closed to stop releasing the cold energy, meanwhile, the air valve is adjusted to be in a state 2, the cooling of the refrigerating system is enough, if the energy storage system is not opened 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.
When the temperature 2 of the indoor side air return opening of the unit is higher than the fourth set temperature T4 (for example, 28 ℃) after the refrigerating system runs stably, the user side still gathers a large amount of heat load, and step 4 is needed to be executed at this time, namely the energy storage system is opened to release cold energy and the air valve is adjusted to be in a state 1, so that the temperature of the user side is reduced rapidly.
In some embodiments, 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, in combination with the current indoor return air temperature of the air conditioning system, controls the on-off state of the energy storage system and the closing timing 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, including:
the control unit is specifically further 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 further configured to control the energy storage system to be turned on and control the energy storage device 25 to store cold if the current indoor return air temperature of the air conditioning system is less than the fifth set temperature, 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 an 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, the control unit is specifically further configured to wait, i.e. continuously 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 the 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 further 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 the fifth set temperature, and then return the cold energy 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 further configured to control the on-off state of the energy storage system and the closing timing of the refrigeration system according to the on-off state of the energy storage system and control the air valve 26 to control the on-off state of the first air outlet and the second air outlet according to the on-off state of the energy storage system, if the current indoor return air temperature of the air conditioning system is less than or equal to the fifth set temperature, in combination with 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.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
Step 9, judging whether the indoor side air return temperature 2 of the unit is smaller than a fifth set temperature T5 (such as 24 ℃): if yes, go to step 10, if not, continue waiting in step 9.
And 10, when the temperature 2 of the indoor side air return opening of the unit is smaller than a fifth set temperature T5 (such as 24 ℃) to indicate that the refrigerating capacity of the refrigerating system exceeds the heat load in the energy storage cabinet, at the moment, the energy storage device 25 can be started to store cold capacity and the air valve can be adjusted to be in a state 1 to communicate the energy storage system with the refrigerating system, but the stored cold 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 the step 11 is executed.
Step 11, judging whether the indoor side air return temperature 2 is less than or equal to a fifth set temperature T5 (for example, 24 ℃): if yes, executing step 12, otherwise, adjusting the cold energy of the energy storage system and returning to step 11.
When the indoor air return temperature 2 is greater than the fifth set temperature T5 (for example, 24 ℃), the power pump 24 needs to be adjusted to reduce the flow of the energy storage system so as to reduce the cold energy absorbed by the energy storage system, and when the indoor air return temperature 2 is less than or equal to the fifth set temperature T5 (for example, 24 ℃), the cold energy is continuously stored.
In some embodiments, the control unit, in combination with 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, and a current air outlet temperature of the 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 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 outlet air 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 further 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 the channel between the air inlet of the air duct and the second air outlet of the air duct 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, 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. Of course, if the current air outlet 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 to continuously determine whether 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.
The control unit is specifically further 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 further configured to control the refrigeration system to be turned off if the current indoor return air temperature of the air conditioning system is smaller than a sixth set temperature. Of course, the control unit is specifically further configured to wait, i.e. 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 magnitude relation 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. Another example is: the first set temperature, the fourth set temperature, and the fifth set temperature may be the same, for example, all 24 ℃.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
Step 12, judging whether the temperature 4 of the indoor side first air outlet is less than or equal to the temperature 3 between the indoor side first heat exchanger 22 and the indoor side second heat exchanger 23: if yes, go to step 13, if not, continue waiting in step 12.
Step 13, when the temperature 4 of the indoor side first air outlet is greater than the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23, the energy storage system is used for absorbing cold energy. When the temperature 4 of the indoor side first air outlet 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 accumulation amount of the energy storage system is saturated and no cold accumulation amount is needed, at the moment, 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 14, finally, closing the refrigeration system when the indoor side return air inlet temperature 2 is smaller than a sixth set temperature T6 (such as 19 ℃).
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 when the power consumption is low at night, but also when the refrigeration requirement is low at ordinary times. If the battery in the energy storage cabinet has no change of charge and discharge states, the load generated by the battery is far lower than the load during charging. At this time, a part of the refrigerating capacity of the refrigerating system is used in the energy storage cabinet, and a part of the refrigerating capacity is used for cold storage in the energy storage system. And when the load on the user side is higher and the temperature rise is faster, the cooling capacity is released, the peak load is reduced, the stable operation of the equipment is maintained, 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 the refrigerating system and the energy storage system, cold accumulation is carried out when the load on the user side is higher and the temperature rise is faster when the refrigerating demand is lower at ordinary times, the problem that the energy storage method in the related scheme cannot fully exert the advantages of the energy storage system is solved, and the energy saving effect is improved.
By adopting the technical scheme of the invention, the inner second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form an energy storage system, the inner first heat exchanger 22, the compressor 13 and the outer heat exchanger 12 jointly form a refrigerating system, the air valve 26 is arranged in an air channel between the inner second heat exchanger 23 and the inner first heat exchanger 22 in the refrigerating system in the energy storage system, the air outlet (namely, the inner medium outlet II 21 b) which directly flows back to the user side after passing through the air valve 26 is additionally arranged, the flow path of the inner heat exchange medium is changed through the air valve 26 according to the state change of the energy storage system, and the inner heat exchange medium (namely, air) can directly flow back to the air outlet at 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, by arranging the air valve and the air outlet in the air channels of the energy storage system and the refrigerating system, the flow path of the heat exchange medium at the inner side can be changed according to the state change of the energy storage system, so that the energy storage system plays a larger 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 is described above.
Since the processing and functions implemented by the air conditioning system of the present embodiment basically correspond to the embodiments, principles and examples of the apparatus, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
By adopting the technical scheme of the invention, the inner second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form the energy storage system, the inner first heat exchanger 22, the compressor 13 and the outer heat exchanger 12 jointly form the refrigeration system, the air valve 26 is arranged in the air channel between the inner second heat exchanger 23 and the inner first heat exchanger 22 in the refrigeration system in the energy storage system, the air which is the inner heat exchange medium (namely, air) directly flows back to the air outlet (namely, the inner medium outlet II 21 b) on the user side after passing through the air valve 26 is increased, the flow path of the inner heat exchange medium is changed through the air valve 26 according to the state change of the energy storage system, and the inner 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 that partial energy loss is avoided, cold accumulation is carried out when the load on the user side is higher and the temperature rise is faster when the refrigeration requirement is lower, the problem that the energy storage method cannot fully exert the energy storage system in the related scheme is solved, and the energy saving effect is improved.
According to an embodiment of the present invention, there is further 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: refrigeration system and energy storage system. In the air duct between the first indoor heat exchanger of the refrigeration system and the second indoor heat exchanger of the energy storage system, an air valve 26 is provided. The air valve 26 may enable the indoor heat exchange medium input from the air inlet of the air duct to be 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 may also enable the indoor heat exchange medium input from the air inlet of the air duct to be 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 energy storage system, such as an inboard second heat exchanger 23. The first air outlet is the first inner medium outlet 21a, and the second air outlet is the second inner medium outlet 21b.
Fig. 2 is a schematic structural diagram of an embodiment of an energy-saving air conditioning system according to the present invention. The energy-saving air conditioning system as shown in fig. 2 includes: a system outside 10 and a system inside 20. The system inner side 20 and the system outer side 10 are both of the same unit internal structure, and the system inner side 20 and the system outer side 10 are separated by a partition board.
Specifically, the system outside 10 includes: an outside heat exchanger 12 and a compressor 13. The heat exchange medium flow direction of the outer heat exchanger 12 is the outer heat exchange medium flow direction 11. In the example shown in fig. 2, the system inside 20 includes: an inner medium outlet I21 a, an inner medium outlet II 21b, an inner first heat exchanger 22, an inner second heat exchanger 23, a power pump 24, an energy storage device 25 and a damper 26. Compared with the related scheme, the scheme of the invention not only combines the refrigerating system and the energy storage system into an integrated structure, namely, the unit has no inner and outer parts and only has one inner and outer parts of the unit, thereby reducing redundant pipe sections, but also adds one air valve 26 and one air outlet, and being convenient for realizing energy-saving control of the energy-saving air conditioning system.
Wherein the exhaust port of the compressor 13 is connected to the first port of the outside heat exchanger 12. The second port of the outer heat exchanger 12 is connected to the inlet of the compressor 13 via the inner first heat exchanger 22. The outside heat exchange medium flow direction 11 is the direction from the first port of the outside heat exchanger 12 to the second port of the outside heat exchanger 12. The first port of the inner second heat exchanger 23 is connected to the second port of the inner second heat exchanger 23 via the power pump 24 and the energy storage device 25. The damper 26 is located between the inner first heat exchanger 22 and the inner second heat exchanger 23. The flow of the inner heat exchange medium 21 is in the direction from the inner first heat exchanger 22 to the inner second heat exchanger 23. The first inner medium outlet 21a is output from the second inner heat exchanger 23. The second inner medium outlet 21b is output from a position between the second inner 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 refrigeration system is operated by the inner first heat exchanger 22 to absorb and transfer the heat from the indoor side to the outer heat exchanger 12 for release, thereby achieving the effect of inner refrigeration, and the compressor 13 provides power for the whole cycle.
In the example shown in fig. 2, the inner second heat exchanger 23 forms an energy storage system together with the power pump 24 and the energy storage device 25. The energy storage system is configured to absorb an excessive part of the cold energy generated by the inner first heat exchanger 22 by the inner second heat exchanger 23 when the heat load on the user side is smaller than the refrigerating energy generated by the refrigerating system, store the excessive part in the energy storage device 25, and release the cold energy in the energy storage device 25 by the inner second heat exchanger 23 when the heat load on the user side reaches a peak value.
In the example shown in fig. 2, the damper 26 is located between the evaporation side of the refrigeration system (i.e., the inner first heat exchanger 22) and the heat exchanger of the energy storage system (i.e., the inner second heat exchanger 23), and adjusts the flow direction of the inner medium according to the unit status. The air valve 26 is used to open or close the energy storage system when the state of the energy storage system is changed, so as to change the flow path of the inner heat exchange medium. In this way, the flow passage is controlled by the damper 26, and partial energy loss can be avoided when the energy storage system is not used.
As shown in fig. 2, the outer heat exchange medium flow direction 11 is specifically: the heat exchange medium from the outside of the unit flows through the outside heat exchanger 12 and then flows back to the outside. The inner first heat exchanger 22 and the damper 26 are located in the same passage and thereafter divided into two flow paths. Therefore, the inner heat exchange medium flow direction 21 is specifically: when the energy storage system is opened, the air valve 26 is controlled so that the air flows back to the user side from the first medium outlet 21a after the air passes through the air valve 26 and passes through the second medium outlet 21a when the energy storage system is opened, wherein the energy storage system is opened in two conditions, namely, the cold energy is released into the medium and the cold energy is absorbed from the medium. When the energy storage system is closed, the air valve 26 is controlled so that the air from the user side flows back to the user side directly 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 made for the sake of easy understanding of the described exemplary embodiment of the present invention, and other devices (e.g., a throttle device, etc.) and additional devices (e.g., a filter, etc.), which are not shown in the drawings, do not form 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 board.
In the scheme of the invention, an 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 in the same channel and the same flow, so that the internal connecting pipe sections are reduced, and the system is simplified. And the air valve is used for controlling, so that partial energy loss can be avoided when the energy storage system is not used, and further, the more excellent performance is achieved.
The scheme of the invention provides an energy-saving air conditioning system, which combines a refrigerating 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 board. Therefore, the energy consumption of the energy storage system caused by longer pipeline connection in the related scheme is reduced greatly by using the connecting pipelines, the cost addition caused by factors such as equipment occupation is reduced greatly, and the method is simple and convenient and is more beneficial to popularization. Therefore, the problems of more refrigeration and energy storage system equipment and large occupied area in the related scheme are solved, and the problem of large energy consumption caused by the refrigeration and energy storage system pipeline in the related scheme 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 is obtained, the current indoor return air temperature of the air conditioning system is obtained, 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 is obtained, the current air outlet temperature of the first air outlet of the air conditioning system is obtained, and the current tube temperature of the first indoor heat exchanger of the refrigerating system is obtained. The current indoor temperature of the air conditioning system, such as the user side temperature 1. The current indoor return air temperature of the air conditioning system is equal to the temperature 2 of an indoor 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, such as the temperature 3 between the first heat exchanger 22 on the inner side of the unit and the second heat exchanger 23 on the inner side. The current tube temperature of the first indoor heat exchanger of the refrigeration system, such as the refrigeration system evaporator tube temperature, i.e., temperature 5.
At step S120, the on-off state of at least one of the energy storage system and the refrigeration system is controlled according to the 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, the on-off state of at least one of the energy storage system and the refrigeration system is controlled 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 air outlet 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, and the air valve 26 is controlled 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.
Fig. 3 is a flow chart of a control method of an energy-saving air conditioning system according to an embodiment of the invention. As shown in fig. 3, a control method of an energy-saving air conditioning system provided by the scheme of the invention includes:
step 1, firstly, a temperature sensor is needed to measure the temperature 1 of a user side, and the temperature sensor is needed to measure the temperature 2 of an indoor air return port of the unit, the temperature 3 between the first heat exchanger 22 and the second heat exchanger 23 on the inner side of the unit, the temperature 4 of a first air outlet on the inner side of the unit, and the temperature 5 of an evaporator tube of a refrigerating system.
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 with the inner first heat exchanger 22 and the inner second heat exchanger 23, and closes the air valve 26 and the passage of the inner medium outlet two 21 b. When the damper 26 is in state 2, the damper 26 opens the passage of the inside medium outlet two 21b and closes the passage of the damper 26 and the inside second heat exchanger 23.
It should be noted that, the temperature information of the user side temperature 1 and the temperature information of the air inlet 2 of the indoor side of the unit indicate the temperature of 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 of the user side affects the refrigeration system. The temperature 3 between the inner first heat exchanger 22 and the inner second heat exchanger 23 is the temperature of the air which 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 when the power consumption is low at night but also outside the normal charge and discharge time, and the peak load is reduced by releasing cold when the load on the user side is higher and the temperature rise is faster, so that the equipment can stably run, the unnecessary energy consumption is reduced, and the energy efficiency of the energy-saving air conditioning system is improved.
In some embodiments, the current temperature parameter of the air conditioning system comprises: the current indoor temperature of the air conditioning system.
In step S120, according to the current temperature parameter of the air conditioning system, the specific process of controlling the on/off state of at least one of the energy storage system and 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 states of the first air outlet and the second air outlet includes: and controlling the first process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
The following is a schematic flow chart of an embodiment of the first 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 in connection with fig. 5, which further describes the specific process of controlling 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, including: step S210 and step S220.
In step S210, in the case that the current temperature parameter of the air conditioning system includes the current indoor temperature of the air conditioning system, and in the case that the current indoor temperature of the air conditioning system is greater than the first set temperature, the refrigeration system is controlled to be turned on, for example, the compressor 13 of the refrigeration system is controlled to be turned on, so that the refrigeration system is turned on.
Step S220, when the refrigeration system is turned on, further controlling the on-off state of the energy storage system and the turn-off timing of the refrigeration system according to the 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 control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
in fig. 3, the first set temperature T1 is preferably 24 ℃ for the start-up parameter of the unit design, the second set temperature T2 is preferably 5±1 ℃, the third set temperature T3 is preferably 1±0.5 ℃, the fourth set temperature T4 is 28±1 ℃ for closing the cool releasing state of the energy storage system, the fifth set temperature T5 is 24 ℃ for the maximum design temperature of the user, and the sixth set temperature T6 is 17 ℃ to 19 ℃ for closing the unit design.
And 2, when the temperature sensor detects that the user side temperature 1 exceeds the design temperature such as the first set temperature T1 (e.g. 24 ℃), starting the refrigerating system, judging the state of the energy storage device 25 such as the energy storage cabinet through the change of the user side temperature 1, and making a relative reaction, wherein the specific reference can be seen from the control process of the step 3 and the following steps.
In some embodiments, the current temperature parameter of the air conditioning system further comprises: the current tube temperature of the first indoor heat exchanger of the refrigeration system.
In step S220, when the refrigeration system is turned on, the on/off state of the energy storage system and the closing timing of the refrigeration 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 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 the second process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
The following is a schematic flow chart of an embodiment of the 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 in connection with fig. 6, which further describes 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 current indoor temperature of the air conditioning system is greater than the second set temperature in the set time, controlling the energy storage system to open and release the cold energy, and controlling the air valve 26 to switch on the channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off 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 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.
Step S330, if the current indoor temperature of the air conditioning system is less than or equal to the second set temperature in the set time, or after the air valve 26 is controlled to be connected to the channel between the air inlet of the air duct and the first air outlet of the air duct and close the channel between the air inlet of the air duct and the second air outlet of the air duct, the current tube temperature of the first indoor heat exchanger of the refrigeration system is combined, the on-off state of the energy storage system and the closing time of the refrigeration system are controlled, and the air valve 26 is controlled 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 control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 3, judging whether the rising value of the user side temperature 1 in unit time exceeds the second set temperature T2 (for example, 5 ℃): if yes, executing the step 4, and if not, executing the step 5.
And 4, opening the energy storage device 25 to release cold energy, and adjusting the air valve 26 to be in a state 1.
Specifically, when the change of the user side temperature 1 in unit time is large, for example, the unit time rising value exceeds the second set temperature T2 (for example, 5 ℃), it indicates that the battery in the energy storage cabinet is in a state of rapid charge and discharge, which belongs to a high load condition, at this time, the energy storage device 25 is opened to release cold energy and the damper 26 is adjusted to the state 1 to connect 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 controlling 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 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: and controlling the third process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
The following is a schematic flow chart of an embodiment of the third 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 in connection with fig. 7, which further describes the specific process of controlling the third process of 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 the current tube temperature of the first indoor heat exchanger of the refrigeration system is less than a third set temperature.
Step S420, if the current tube temperature of the first indoor heat exchanger of the refrigeration system 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 is greater than the second set temperature.
Step S420, if the current tube temperature of the first indoor heat exchanger of the refrigeration system 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:
step S430, if the current indoor return air temperature of the air conditioning system is greater than or equal to the fourth set temperature, the air conditioning system returns to continuously control the energy storage system to open and release cold energy, and control the air valve 26 to switch on a channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off 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.
Step S440, if the current indoor return air temperature of the air conditioning system is less than the fourth set temperature, controlling the energy storage system to close and stop releasing the cold energy, and 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 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, the opening and closing state of the energy storage system and the closing time of the refrigerating system are controlled by combining the current indoor return air temperature of the air conditioning system, 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 states of the first air outlet and the second air outlet.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 5, when the rising value of the user side temperature 1 in unit time is smaller than or equal to the second set temperature T2 (for example, 5 ℃), the next step is to determine whether the tube temperature of the evaporator of the refrigeration system, that is, the change value of the temperature 5 is smaller than the third set temperature T3 (for example, 1 ℃): if yes, executing the step 6, otherwise, returning to the step 3.
And 6, when the temperature of the evaporator tube of the refrigeration system, namely the change value of the temperature 5, is smaller than a third set temperature T3 (such as 1 ℃), the refrigeration system is indicated to be in stable operation, the released cold of the refrigeration system is dominant gradually, the temperature in the energy storage device 25 such as an energy storage cabinet starts to drop, and then the step 7 is executed.
When the evaporator tube temperature of the refrigeration system, i.e. the variation value of the temperature 5, is not less than the third set temperature T3 (for example, 1 ℃) which indicates that the refrigeration system is not stably operated, in order to prevent the rising value of the user side temperature 1 from being greater than the second set temperature T2 (for example, 5 ℃) in unit time when waiting for the refrigeration system to stably operate, the step 3 needs to be returned again, and whether the rising value of the user side temperature 1 is less than the second set temperature T2 (for example, 5 ℃) in unit time is judged.
Step 7, judging whether the indoor side air return temperature 2 of the unit is smaller than a fourth set temperature T4 (for example, 28 ℃): if yes, executing the step 8, and if not, executing the step 4.
Step 8, closing the energy storage system, and adjusting the air valve 26 to the state 2.
When the temperature of the indoor side air return opening of the unit is less than the fourth set temperature T4 (for example, 28 ℃) the energy storage system can be closed to stop releasing the cold energy, meanwhile, the air valve is adjusted to be in a state 2, the cooling of the refrigerating system is enough, if the energy storage system is not opened 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.
When the temperature 2 of the indoor side air return opening of the unit is higher than the fourth set temperature T4 (for example, 28 ℃) after the refrigerating system runs stably, the user side still gathers a large amount of heat load, and step 4 is needed to be executed at this time, namely the energy storage system is opened to release cold energy and the air valve is adjusted to be in a state 1, so that the temperature of the user side is reduced rapidly.
In some embodiments, 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 controlling the on-off state of the energy storage system and the closing timing of the refrigeration system in combination with 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 to control the on-off states of the first air outlet and the second air outlet includes: and controlling a fourth process of the energy storage system, the refrigeration system and the air valve according to the current temperature parameter.
The following is a schematic flow chart of an embodiment of the fourth 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 in connection with fig. 8, which further describes the specific process of controlling the fourth process of 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.
Step S510, determining whether the current indoor return air temperature of the air conditioning system is less than a fifth set temperature.
Step S520, if the current indoor return air temperature of the air conditioning system is less than the fifth set temperature, controlling the energy storage system to be turned on and controlling the energy storage device 25 to store cold energy, and controlling the air valve 26 to switch on a channel between the air inlet of the air duct and the first air outlet of the air duct and to switch off 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 if the current indoor return air temperature of the air conditioning system is greater than or equal to the fifth set temperature, waiting, namely continuously determining 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.
In step S540, if the current indoor return air temperature of the air conditioning system is greater than the fifth set temperature, the flow of the cold energy stored in the energy storage device 25 is reduced, and then the process returns 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 the fifth set temperature, 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 are combined, the on-off state of the energy storage system and the closing timing of the refrigeration system are controlled, and the air valve 26 is controlled 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 control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 9, judging whether the indoor side air return temperature 2 of the unit is smaller than a fifth set temperature T5 (such as 24 ℃): if yes, go to step 10, if not, continue waiting in step 9.
And 10, when the temperature 2 of the indoor side air return opening of the unit is smaller than a fifth set temperature T5 (such as 24 ℃) to indicate that the refrigerating capacity of the refrigerating system exceeds the heat load in the energy storage cabinet, at the moment, the energy storage device 25 can be started to store cold capacity and the air valve can be adjusted to be in a state 1 to communicate the energy storage system with the refrigerating system, but the stored cold 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 the step 11 is executed.
Step 11, judging whether the indoor side air return temperature 2 is less than or equal to a fifth set temperature T5 (for example, 24 ℃): if yes, executing step 12, otherwise, adjusting the cold energy of the energy storage system and returning to step 11.
When the indoor air return temperature 2 is greater than the fifth set temperature T5 (for example, 24 ℃), the power pump 24 needs to be adjusted to reduce the flow of the energy storage system so as to reduce the cold energy absorbed by the energy storage system, and when the indoor air return temperature 2 is less than or equal to the fifth set temperature T5 (for example, 24 ℃), the cold energy is continuously stored.
In some embodiments, in combination with 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, and a current air outlet temperature of the first air outlet of the air conditioning system, controlling an on-off state of the energy storage system and a closing timing 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 states 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.
The following is a schematic flow chart of an embodiment of the fifth 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 in connection with fig. 9, which further describes the specific process of controlling 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, including: step S610 to step S640.
Step S610, determining whether 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.
In step S620, 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, the air valve 26 is controlled 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 is directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve 26. Of course, if the current air outlet 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 to continuously determine whether 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.
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 640, if the current indoor return air temperature of the air conditioning system is less than the sixth set temperature, controlling the refrigeration system to be closed. And if the current indoor return air temperature of the air conditioning system is greater than or equal to the sixth set temperature, waiting, namely continuously determining whether the current indoor return air temperature of the air conditioning system is less than the sixth set temperature.
The magnitude relation 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. Another example is: the first set temperature, the fourth set temperature, and the fifth set temperature may be the same, for example, all 24 ℃.
As shown in fig. 3, the control method of the energy-saving air conditioning system provided by the scheme of the invention further includes:
step 12, judging whether the temperature 4 of the indoor side first air outlet is less than or equal to the temperature 3 between the indoor side first heat exchanger 22 and the indoor side second heat exchanger 23: if yes, go to step 13, if not, continue waiting in step 12.
Step 13, when the temperature 4 of the indoor side first air outlet is greater than the temperature 3 between the inner side first heat exchanger 22 and the inner side second heat exchanger 23, the energy storage system is used for absorbing cold energy. When the temperature 4 of the indoor side first air outlet 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 accumulation amount of the energy storage system is saturated and no cold accumulation amount is needed, at the moment, 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 14, finally, closing the refrigeration system when the indoor side return air inlet temperature 2 is smaller than a sixth set temperature T6 (such as 19 ℃).
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 when the power consumption is low at night, but also when the refrigeration requirement is low at ordinary times. If the battery in the energy storage cabinet has no change of charge and discharge states, the load generated by the battery is far lower than the load during charging. At this time, a part of the refrigerating capacity of the refrigerating system is used in the energy storage cabinet, and a part of the refrigerating capacity is used for cold storage in the energy storage system. And when the load on the user side is higher and the temperature rise is faster, the cooling capacity is released, the peak load is reduced, the stable operation of the equipment is maintained, 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 the refrigerating system and the energy storage system, cold accumulation is carried out when the load on the user side is higher and the temperature rise is faster when the refrigerating demand is lower at ordinary times, the problem that the energy storage method in the related scheme cannot fully exert the advantages of the energy storage system 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 described above, the descriptions of the present embodiment are not exhaustive, and reference may be made to the related descriptions of the foregoing embodiments, which are not repeated herein.
By adopting the technical scheme of the embodiment, the inner second heat exchanger 23, the power pump 24 and the energy storage device 25 jointly form an energy storage system, the inner first heat exchanger 22, the compressor 13 and the outer heat exchanger 12 jointly form a refrigeration system, an air valve 26 is arranged in an air duct between the inner second heat exchanger 23 and the inner first heat exchanger 22 in the refrigeration system in the energy storage system, an air outlet (namely, an inner medium outlet II 21 b) which enables an inner heat exchange medium (namely, air) to directly flow back to a user side after passing through the air valve 26 is increased, a flow path of the inner heat exchange medium is changed through the air valve 26 according to state change of the energy storage system, and the inner 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 that partial energy loss is avoided, the energy-saving air conditioning system can store cold not only when electricity is used at night but also can store cold and energy-saving air conditioning system can be used outside charging and discharging time at ordinary times, and energy efficiency of the energy-saving air conditioning system is improved.
In summary, it is readily understood by those skilled in the art that the above-described advantageous ways 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, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. 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 by comprising: 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 refrigeration system and the second indoor heat exchanger of the energy storage system; the air valve (26) can enable indoor heat exchange medium input from the air inlet of the air duct to be 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 enable indoor heat exchange medium input from the air inlet of the air duct to be directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve (26);
The control device of the air conditioning system comprises: an acquisition unit and a control unit; wherein,
the acquisition unit is configured to acquire the current temperature parameter of the air conditioning system;
the control unit is configured to control 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 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, and comprises:
and under the condition that the refrigerating system is started, controlling the on-off state of the energy storage system according to the 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 so as to control the on-off states of the first air outlet and the second air outlet, so as to store or release cold in the energy storage system.
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 board.
3. The control device of an air conditioning system according to claim 1 or 2, characterized in that the current temperature parameter of the air conditioning system comprises: the 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 refrigerating system according to the current temperature parameter of the air conditioning system, and controls the air valve (26) to control the on-off state of the first air outlet and the second air outlet according to the on-off state of the energy storage system, and comprises:
controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is greater than a first set temperature;
and under the condition that the refrigerating system is started, further controlling the starting and stopping state 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 starting and stopping state of the energy storage system so as to control the starting and stopping states of the first air outlet and the second air outlet.
4. A control device of an air conditioning system according to claim 3, characterized in that the current temperature parameter of the air conditioning system further comprises: the 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 refrigerating 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 states of the first air outlet and the second air outlet, and comprises:
determining whether a rising value of a current indoor temperature of the air conditioning system within 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 larger than the second set temperature, controlling the energy storage system to open and release cold energy, 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 an 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;
if the current indoor temperature of the air conditioning system is smaller than or equal to the second set temperature in the set time, 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, the current pipe temperature of the first indoor heat exchanger of the refrigerating 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.
5. The control device of an 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 present tube temperature of the first indoor heat exchanger of refrigerating system, control the on-off state of energy storage system with refrigerating system's closing opportunity, and according to the on-off state control blast gate (26) of energy storage system with the on-off state of control first air outlet with the second air outlet includes:
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 smaller than a third set temperature;
if the change value of the current tube temperature of the first indoor heat exchanger of the refrigerating 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 tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is smaller than the third set temperature, determining whether the current indoor return air temperature of the air conditioning system is smaller 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 open and release cold energy, 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 an indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of an 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;
if the current indoor return air temperature of the air conditioning system is smaller than a fourth set temperature, the energy storage system is controlled to be closed and stop releasing cold energy, the air valve (26) is controlled 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 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 according to 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, combine the current indoor return air temperature of air conditioning system, control the open and close state of energy storage system with refrigerating system's closing opportunity, and according to the open and close state control of energy storage system blast gate (26) with the open and close state of control first air outlet with the second air outlet includes:
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 smaller than the 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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;
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 greater than the fifth set temperature, reducing the flow of cold stored by the energy storage device (25), and 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;
if the current indoor return air temperature of the air conditioning system is smaller than or equal to the fifth set temperature, the opening and closing states of the energy storage system and the closing time of the refrigerating system are controlled by combining 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 and the current air outlet temperature of the first air outlet 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.
7. The control device of an 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 air outlet 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 (26) to control on-off states of the first air outlet and the second air outlet according to the on-off state of the energy storage system, includes:
Determining whether the current air outlet 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 smaller 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 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 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 smaller than the sixth set temperature, controlling the refrigeration system to be closed.
8. An air conditioning system, comprising: the control device of an air conditioning system according to any one of claims 1 to 7.
9. A control method of an air conditioning system, the air conditioning system comprising: 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 refrigeration system and the second indoor heat exchanger of the energy storage system; the air valve (26) can enable indoor heat exchange medium input from the air inlet of the air duct to be 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 enable indoor heat exchange medium input from the air inlet of the air duct to be directly output to the second air outlet of the indoor space of the air conditioning system after passing through the air valve (26);
the control method of the air conditioning system comprises the following steps:
acquiring the current temperature parameter of the air conditioning system;
according to the current temperature parameter of the air conditioning system, controlling the on-off state of at least one of the energy storage system and the refrigerating 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, comprising:
and under the condition that the refrigerating system is started, controlling the on-off state of the energy storage system according to the 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 so as to control the on-off states of the first air outlet and the second air outlet, so as to store or release cold in the energy storage system.
10. The method of controlling an air conditioning system according to claim 9, wherein the current temperature parameter of the air conditioning system comprises: the current indoor temperature of the air conditioning system;
according to the current temperature parameter of the air conditioning system, controlling the on-off state of at least one of the energy storage system and the refrigerating 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, comprising:
controlling the refrigeration system to be started under the condition that the current indoor temperature of the air conditioning system is greater than a first set temperature;
and under the condition that the refrigerating system is started, further controlling the starting and stopping state 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 starting and stopping state of the energy storage system so as to control the starting and stopping 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: the 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 refrigerating 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, comprising:
determining whether a rising value of a current indoor temperature of the air conditioning system within 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 larger than the second set temperature, controlling the energy storage system to open and release cold energy, 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 an 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;
if the current indoor temperature of the air conditioning system is smaller than or equal to the second set temperature in the set time, 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, the current pipe temperature of the first indoor heat exchanger of the refrigerating 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.
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;
the method for controlling the on-off state of the energy storage system and the closing time of the refrigeration system by combining the current tube temperature of the first indoor heat exchanger 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 comprises the following steps:
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 smaller than a third set temperature;
if the change value of the current tube temperature of the first indoor heat exchanger of the refrigerating 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 tube temperature of the first indoor heat exchanger of the refrigeration system in the set time is smaller than the third set temperature, determining whether the current indoor return air temperature of the air conditioning system is smaller 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 open and release cold energy, 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 an indoor heat exchange medium input from the air inlet of the air duct is output to the first air outlet of an 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;
if the current indoor return air temperature of the air conditioning system is smaller than a fourth set temperature, the energy storage system is controlled to be closed and stop releasing cold energy, the air valve (26) is controlled 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 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.
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 method for controlling the opening and closing states 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 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 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 smaller than the 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 close a channel between the air inlet of the air duct and the second air outlet of the air duct, so that 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;
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 greater than the fifth set temperature, reducing the flow of cold stored by the energy storage device (25), and 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;
if the current indoor return air temperature of the air conditioning system is smaller than or equal to the fifth set temperature, the opening and closing states of the energy storage system and the closing time of the refrigerating system are controlled by combining 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 and the current air outlet temperature of the first air outlet 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.
14. The control method of an air conditioning system according to claim 13, wherein controlling the on-off state of the energy storage system and the closing timing of the refrigeration system 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 air outlet temperature of a first air outlet of the air conditioning system, and controlling the air valve (26) to control the on-off state of the first air outlet and the second air outlet according to the on-off state of the energy storage system, includes:
Determining whether the current air outlet 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 smaller 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 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 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 smaller than the 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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CN107906640A (en) * 2017-10-18 2018-04-13 深圳市共济科技股份有限公司 A kind of integrated chilling air conditioning system and its control method for data center
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