CN111895499A - Air conditioning system, air conditioner and control method of air conditioning system - Google Patents

Air conditioning system, air conditioner and control method of air conditioning system Download PDF

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Publication number
CN111895499A
CN111895499A CN202010821373.0A CN202010821373A CN111895499A CN 111895499 A CN111895499 A CN 111895499A CN 202010821373 A CN202010821373 A CN 202010821373A CN 111895499 A CN111895499 A CN 111895499A
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CN
China
Prior art keywords
conditioning system
air
air conditioning
evaporator
outdoor
Prior art date
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Pending
Application number
CN202010821373.0A
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Chinese (zh)
Inventor
黄明月
梁祥飞
皇甫启捷
方金升
黄泽清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202010821373.0A priority Critical patent/CN111895499A/en
Publication of CN111895499A publication Critical patent/CN111895499A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an air conditioning system, an air conditioner and a control method of the air conditioning system, wherein the air conditioning system comprises a compressor, a condensing device, a flash device, an evaporating device and a ventilating device, wherein the condensing device is communicated with an exhaust port of the compressor; the condensing device is communicated with a refrigerant inlet of the flash device, and a first refrigerant outlet of the flash device is communicated with a first air suction port of the compressor; an inlet of a first evaporator and an inlet of a second evaporator of the evaporation device are both communicated with a second refrigerant outlet of the flash device, an outlet of the first evaporator is communicated with a second air suction port, and an outlet of the second evaporator is communicated with a third air suction port; an air inlet of a fan of the ventilation device is communicated with the outside; the humidifying structure of the ventilation device is arranged adjacent to the fan so as to provide moisture for fresh air introduced into the room; the first evaporator handles sensible heat load in the chamber and the second evaporator handles latent heat load in the chamber. The invention solves the problem that the air conditioning system in the prior art can not control both the indoor temperature and the indoor humidity.

Description

Air conditioning system, air conditioner and control method of air conditioning system
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an air conditioning system, an air conditioner and a control method of the air conditioning system.
Background
Among the prior art, when air conditioning system was in the mode of refrigerating, can realize reducing the purpose of the temperature of room air, however, air conditioning system among the prior art mostly is the temperature in only the control room, leads to humidity too low and seriously influence user's comfort easily, greatly reduced user experience good feeling to air conditioning system's use.
Disclosure of Invention
The invention mainly aims to provide an air conditioning system, an air conditioner and a control method of the air conditioning system, and aims to solve the problem that the air conditioning system in the prior art cannot control the indoor temperature and humidity at the same time.
In order to achieve the above object, according to one aspect of the present invention, there is provided an air conditioning system including a compressor having a first suction port, a second suction port, a third suction port and an exhaust port; the inlet of the condensing device is communicated with the exhaust port; the flash device is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the condensing device is communicated with the refrigerant inlet, and the first refrigerant outlet is communicated with the first air suction port; the evaporator comprises a first evaporator and a second evaporator which are arranged in parallel, an inlet of the first evaporator and an inlet of the second evaporator are communicated with a second refrigerant outlet, an outlet of the first evaporator is communicated with a second air suction port, and an outlet of the second evaporator is communicated with a third air suction port; the ventilation device comprises a fan and a humidifying structure, wherein an air inlet of the fan is communicated with the outside so as to introduce outdoor fresh air into the room; the humidifying structure is arranged adjacent to the fan and used for providing moisture for fresh air introduced by the fan; wherein the first evaporator is used for processing sensible heat load in the chamber, and the second evaporator is used for processing latent heat load in the chamber, so as to independently control temperature and humidity in the chamber.
Further, the first evaporator and the second evaporator are arranged oppositely, the first evaporator is arranged on the windward side, and the second evaporator is arranged on the leeward side.
Furthermore, the air conditioning system also comprises a first throttling device, and the first throttling device is arranged on a pipeline between the inlet of the first evaporator and the second refrigerant outlet of the flash device.
Furthermore, the air conditioning system also comprises a second throttling device, and the second throttling device is arranged on a pipeline between an inlet of the second evaporator and a second refrigerant outlet of the flash device.
Furthermore, the air conditioning system also comprises a third throttling device, and the third throttling device is arranged on a pipeline between the outlet of the condensing device and the refrigerant inlet of the flash device.
Further, the air conditioning system further comprises a photovoltaic power supply device, the photovoltaic power supply device is arranged outdoors, and the photovoltaic power supply device is electrically connected with the compressor to supply power to the compressor.
Furthermore, the air conditioning system also comprises an outdoor controller, the outdoor controller comprises a first control element, the photovoltaic power supply device and the external power supply device are electrically connected with the first control element, and the first control element is used for controlling the power supply quantity proportion of the photovoltaic power supply device and the external power supply device; when the power supply amount of the photovoltaic power supply device is smaller than or equal to the preset electric quantity, the outdoor controller controls the external power supply device to be electrically connected with the compressor, so that the photovoltaic power supply device and the external power supply device jointly supply power to the compressor.
Furthermore, the outdoor controller further comprises a second control element, and the air-conditioning indoor unit of the air-conditioning system, the air-conditioning outdoor unit of the air-conditioning system and the ventilation device of the air-conditioning system are all connected with the second control element, and the second control element is used for controlling the operation conditions of the air-conditioning indoor unit, the air-conditioning outdoor unit and the ventilation device.
Furthermore, the air conditioning system also comprises a refrigerant, wherein the refrigerant is a low GWP refrigerant.
According to another aspect of the present invention, there is provided an air conditioner comprising an air conditioning system as described above.
According to another aspect of the present invention, there is provided a control method of an air conditioning system, the method being for controlling the air conditioning system described above, the control method comprising: detecting an outdoor temperature, an indoor temperature and an outdoor relative humidity; when the outdoor temperature is lower than the indoor temperature, controlling the fan of the ventilation device to operate; obtaining an outdoor air enthalpy value according to the outdoor dry bulb temperature and the outdoor relative humidity, and controlling a fan of the ventilation device and a humidifying structure of the ventilation device to operate when the outdoor temperature is higher than the indoor temperature and the outdoor air enthalpy value is lower than a preset enthalpy value; and when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is higher than the preset enthalpy value, controlling the operation of an indoor air conditioner of the air conditioning system and an outdoor air conditioner of the air conditioning system.
Further, the control method also comprises the steps of detecting the air outlet temperature of the wet film passing through the humidifying structure of the ventilation device; when the air outlet temperature of the wet film passing through the humidifying structure of the ventilation device is lower than the indoor dry bulb temperature, the fan of the ventilation device and the humidifying structure of the ventilation device continuously operate; when the outlet air temperature is higher than the indoor temperature, the fan of the ventilation device and the humidification structure of the ventilation device stop running, and the indoor air conditioner unit of the air conditioning system and the outdoor air conditioner unit of the air conditioning system are controlled to run.
Further, the control method also comprises the steps of detecting the power generation amount of the photovoltaic power supply device of the air conditioning system; and controlling the power supply quantity ratio of the photovoltaic power supply device of the air conditioning system and an external power supply device according to the generated energy of the photovoltaic power supply device of the air conditioning system.
By applying the technical scheme of the invention, the evaporator of the air conditioning system comprises the first evaporator and the second evaporator which are arranged in parallel, wherein the first evaporator is a high-temperature evaporator and ensures that the first evaporator can process indoor sensible heat load, and the second evaporator is a low-temperature evaporator and ensures that the second evaporator can process indoor latent heat load, so that the indoor air is cooled in a gradient manner, the heat and humidity load processing capacity of the air conditioning system is improved, the irreversible heat loss in the heat transfer process of the evaporator is reduced, and the heat exchange efficiency of the air conditioning system is improved. In addition, indoor and outdoor ventilation can be realized through the arrangement of the ventilation device, the indoor air quality can be improved, and the user experience is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 illustrates a schematic layout of an air conditioning system according to an alternative embodiment of the present invention;
FIG. 2 shows a schematic distribution diagram of the air conditioning system of FIG. 1;
fig. 3 shows a schematic view of another view of the air conditioning system of fig. 2.
Wherein the figures include the following reference numerals:
10. a compressor; 11. a first air intake port; 12. a second air suction port; 13. a third air suction port; 14. an exhaust port; 20. a condensing unit; 30. a flash device; 40. an evaporation device; 41. a first evaporator; 42. a second evaporator; 60. an outdoor controller; 70. a ventilation device; 71. a fan; 72. a humidifying structure; 721. wet film forming; 722. a first spray structure; 723. a first water pan; 80. an air-conditioning indoor unit; 90. an air conditioner outdoor unit; 100. a photovoltaic power supply; 110. an indoor controller; 120. an external water source; 130. an external power supply device; 150. a first throttling device; 160. a second throttling device; 170. and a third throttling device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an air conditioning system, an air conditioner and a control method of the air conditioning system, aiming at solving the problem that the air conditioning system in the prior art cannot control the indoor temperature and humidity at the same time.
As shown in fig. 1, the air conditioning system includes a compressor 10, a condensing device 20, a flashing device 30, an evaporating device 40, and a ventilating device 70, the compressor 10 having a first suction port 11, a second suction port 12, a third suction port 13, and a discharge port 14; the inlet of the condensing device 20 is communicated with the exhaust port 14; the flash device 30 is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the condensing device 20 is communicated with the refrigerant inlet, and the first refrigerant outlet is communicated with the first air suction port 11; the evaporator 40 comprises a first evaporator 41 and a second evaporator 42 which are arranged in parallel, an inlet of the first evaporator 41 and an inlet of the second evaporator 42 are both communicated with a second refrigerant outlet, an outlet of the first evaporator 41 is communicated with the second suction port 12, and an outlet of the second evaporator 42 is communicated with the third suction port 13; the ventilation device 70 comprises a fan 71 and a humidifying structure 72, wherein an air inlet of the fan 71 is communicated with the outside so as to introduce fresh air from the outside into the room; the humidifying structure 72 is arranged adjacent to the fan 71, and the humidifying structure 72 is used for providing moisture for fresh air introduced by the fan 71; among them, the first evaporator 41 is used for treating sensible heat load in the chamber, and the second evaporator 42 is used for treating latent heat load in the chamber to independently control temperature and humidity in the chamber.
By applying the technical scheme of the invention, the evaporator 40 of the air conditioning system comprises a first evaporator 41 and a second evaporator 42 which are arranged in parallel, wherein the first evaporator 41 is a high-temperature evaporator to ensure that the first evaporator 41 can process indoor sensible heat load, the second evaporator 42 is a low-temperature evaporator to ensure that the second evaporator 42 can process indoor latent heat load, so that the indoor air is cooled in a gradient manner, the capacity of the air conditioning system for processing heat and humidity load is improved, irreversible heat loss in the heat transfer process of the evaporator 40 is reduced, and the heat exchange efficiency of the air conditioning system is improved. In addition, ventilation device 70's setting can realize indoor, outer ventilation, can promote indoor air quality, has promoted user's use and has experienced.
As shown in fig. 1, arrow a indicates a first wind direction and arrow B indicates a second wind direction.
As shown in fig. 1, the first evaporator 41 and the second evaporator 42 are disposed opposite to each other, and the second evaporator 42 is located on a side of the first evaporator 41 away from the outdoor. Like this, air conditioning system's refrigerating unit adopts parallelly connected first evaporimeter 41 and the second evaporimeter 42 that sets up, and wherein, first evaporimeter 41 sets up in the windward side, and second evaporimeter 42 sets up in the leeward side, ensures that the air of treating cools down through first evaporimeter 41 earlier, passes through second evaporimeter 42 again and dehumidifies (also cool down simultaneously), reaches the air supply condition of predetermineeing and sends into the air after handling indoor to reach indoor temperature and humidity independent control's mesh.
As shown in fig. 1, the air conditioning system further includes a first throttling device 150, and the first throttling device 150 is disposed on a pipeline between an inlet of the first evaporator 41 and a second refrigerant outlet of the flash device 30. The air conditioning system further comprises a second throttling device 160, and the second throttling device 160 is arranged on a pipeline between the inlet of the second evaporator 42 and the second refrigerant outlet of the flash device 30. The air conditioning system further includes a third throttling device 170, and the third throttling device 170 is disposed on a pipeline between the outlet of the condensing device 20 and the refrigerant inlet of the flash device 30.
As shown in fig. 1, the air conditioning system further includes a photovoltaic power supply device 100, the photovoltaic power supply device 100 is disposed outdoors, and the photovoltaic power supply device 100 is electrically connected to the compressor 10 to supply power to the compressor 10. In this way, the photovoltaic power supply device 100 collects solar energy and converts the solar energy into direct current electric energy to supply power to the compressor 10, thereby making full use of natural resources and being beneficial to energy conservation of the air conditioning system.
Optionally, the photovoltaic power supply apparatus 100 includes a high-efficiency photovoltaic panel, a storage battery, an inverter, and the like.
Optionally, the air conditioning system further includes an outdoor controller 60, where the outdoor controller 60 includes a first control element, and both the photovoltaic power supply device 100 and the external power supply device are electrically connected to the first control element, and the first control element is configured to control a power supply amount ratio between the photovoltaic power supply device 100 and the external power supply device; when the power supply amount of the photovoltaic power supply device 100 is less than or equal to the preset power amount, the outdoor controller 60 controls the external power supply device 130 to be electrically connected with the compressor 10, so that the photovoltaic power supply device 100 and the external power supply device 130 jointly supply power to the compressor 10. Therefore, according to the power required by the operation of the air conditioning system and the power generation power of the photovoltaic power supply device 100, the power supply proportion of the external power supply device and the photovoltaic power supply device 100 is adjusted in real time by adopting multi-power management coordination control and energy complementation and smooth switching technology, so that the efficient utilization of solar energy is realized.
It should be noted that, in the present application, the outdoor controller 60 further includes a second control element, and the indoor air conditioner 80 of the air conditioning system, the outdoor air conditioner 90 of the air conditioning system, and the ventilation device 70 of the air conditioning system are all connected to the second control element, and the second control element is used for controlling the operation conditions of the indoor air conditioner 80, the outdoor air conditioner 90, and the ventilation device 70.
As shown in fig. 1, a ventilation device 70 of the air conditioning system is provided at a communication position between the inside and the outside of the room, and the ventilation device 70 includes a blower 71, and an intake port of the blower 71 is communicated with the outside of the room to introduce fresh air from the outside of the room into the room. Thus, when the outdoor temperature is lower than the indoor temperature, the blower 71 of the ventilating device 70 is operated at a high speed to introduce the low-temperature outdoor air into the room, thereby achieving the purpose of lowering the indoor temperature.
As shown in fig. 1, the ventilation device 70 further includes a humidifying structure 72, and the humidifying structure 72 has a humidifying portion, at least a portion of which is disposed opposite to the blower 71 to supply moisture to fresh air introduced by the blower 71. The humidifying portion includes wet membrane 721, and wet membrane 721 sets up with the air intake or the air outlet of fan 71 relatively, and humidification structure 72 includes first spray structure 722, and the spraying mouth of first spray structure 722 sets up towards wet membrane 721 to wet membrane 721 shower water. Thus, when the outdoor temperature is higher than the indoor temperature, the enthalpy value of the outdoor air is obtained according to the outdoor dry bulb temperature and the outdoor relative humidity, when the enthalpy value of the outdoor air is lower than the preset enthalpy value, the fan 71 and the humidifying structure 72 of the ventilation device 70 run simultaneously, at the moment, the outlet air temperature of the fan 71 of the ventilation device 70 is detected, and when the outlet air temperature is lower than the indoor dry bulb temperature, the fan 71 and the humidifying structure 72 of the ventilation device 70 run continuously; when the outlet air temperature is higher than the indoor temperature, the blower 71 and the humidifying structure 72 of the ventilating device 70 are both stopped, and at the same time, the compressor 10 of the air conditioning system is started, the indoor air conditioning unit 80 and the outdoor air conditioning unit 90 are operated, and the indoor load is reduced by cooling and supplying air through the indoor air conditioning unit 80.
As shown in fig. 1, the humidifying structure 72 further includes a first water receiving tray 723, and the first water receiving tray 723 is located below the wet film 721 to receive water sprayed by the first spraying structure 722. In this way, the first water receiving tray 723 serves to collect the water sprayed by the first spraying structure 722, and prevent the water sprayed by the first spraying structure 722 from flowing indoors or outdoors.
As shown in fig. 1, the outdoor controller 60 further includes a control element, and the indoor air conditioner 80 of the air conditioning system, the outdoor air conditioner 90 of the air conditioning system, and the ventilation device 70 are electrically connected to the control element, and the control element is used for controlling the operation conditions of the indoor air conditioner 80, the outdoor air conditioner 90, and the ventilation device 70.
As shown in fig. 1, the air conditioning system further includes an indoor controller 110 and an indoor unit casing, the indoor controller 110 is electrically connected to the outdoor controller 60, the indoor controller 110 is electrically connected to the air deflector of the indoor unit casing to control an air deflecting angle of the air deflector, and the indoor controller 110 is electrically connected to the wind sweeping blade of the indoor unit casing to control a wind sweeping direction of the wind sweeping blade.
The air conditioning system in the above embodiment may also be used in an air conditioner, where the air conditioner includes an air conditioning system, and the air conditioning system is the air conditioning system in the above embodiment.
According to another aspect of the present invention, there is provided a control method of an air conditioning system, the method for controlling the air conditioning system in the above embodiment, the control method comprising detecting an outdoor temperature, an indoor temperature, and an outdoor relative humidity; controlling the fan 71 of the ventilation device 70 to operate when the outdoor temperature is lower than the indoor temperature; obtaining an outdoor air enthalpy value according to the outdoor dry bulb temperature and the outdoor relative humidity, and controlling the operation of a fan 71 of the ventilation device 70 and a humidifying structure 72 of the ventilation device 70 when the outdoor temperature is higher than the indoor temperature and the outdoor air enthalpy value is lower than a preset enthalpy value; and when the outdoor temperature is higher than the indoor temperature and the enthalpy of the outdoor air is higher than the preset enthalpy, controlling the indoor air conditioner unit 80 of the air conditioning system and the outdoor air conditioner unit 90 of the air conditioning system to operate.
The control method of the air conditioning system further includes detecting an outlet air temperature of the wet film 721 passing through the humidifying structure 72 of the ventilator 70; when the outlet air temperature of the wet film 721 passing through the humidifying structure 72 of the ventilator 70 is lower than the indoor dry bulb temperature, the blower 71 of the ventilator 70 and the humidifying structure 72 of the ventilator 70 operate continuously; when the outlet air temperature is higher than the indoor temperature, the blower 71 of the ventilation device 70 and the humidifying structure 72 of the ventilation device 70 stop operating, and the indoor air conditioner 80 of the air conditioning system and the outdoor air conditioner 90 of the air conditioning system are controlled to operate.
It should be noted that, in the present application, the operation mode of the air conditioning system is as follows:
specifically, the single ventilation mode of the ventilation device 70 of the air conditioning system:
when the outdoor temperature is lower than the indoor temperature, the blower 71 of the ventilation device 70 is controlled to operate. Thus, when the outdoor temperature is lower than the indoor temperature, the blower 71 of the ventilating device 70 is operated at a high speed to introduce the low-temperature outdoor air into the room, thereby achieving the purpose of lowering the indoor temperature.
Ventilation and humidification mode of the ventilation device 70 of the air conditioning system:
when the outdoor temperature is higher than the indoor temperature and the enthalpy of the outdoor air is lower than the preset enthalpy, the blower 71 of the ventilation device 70 and the humidifying structure 72 of the ventilation device 70 are controlled to operate. Thus, when the outdoor temperature is higher than the indoor temperature, the enthalpy value of the outdoor air is obtained according to the outdoor dry bulb temperature and the outdoor relative humidity, when the enthalpy value of the outdoor air is lower than the preset enthalpy value, the fan 71 and the humidifying structure 72 of the ventilation device 70 operate simultaneously, at the moment, the outlet air temperature passing through the wet film 721 of the ventilation device 70 is detected, and when the outlet air temperature is lower than the indoor dry bulb temperature, the fan 71 and the humidifying structure 72 of the ventilation device 70 operate continuously.
The air conditioning system is switched from the ventilation and humidification mode of the ventilation device 70 to the pure air conditioning mode of the air conditioning system:
when the outlet air temperature passing through the wet film 721 of the ventilation device 70 is higher than the indoor temperature, the blower 71 and the humidifying structure 72 of the ventilation device 70 are both stopped, and at the same time, the compressor 10 of the air conditioning system is started, the indoor air conditioning unit 80 and the outdoor air conditioning unit 90 are operated, and the indoor load is reduced by cooling and supplying air through the indoor air conditioning unit 80.
Pure air conditioning mode of the air conditioning system:
specifically, when the outdoor temperature is higher than the indoor temperature and the enthalpy of the outdoor air is higher than the enthalpy of the preset air, the indoor air conditioning unit 80 of the air conditioning system and the outdoor air conditioning unit 90 of the air conditioning system are controlled to operate, and the indoor load is reduced by cooling and supplying air through the indoor air conditioning unit 80.
It should be noted that, in the present application, the control method of the air conditioning system further includes detecting the power generation amount of the photovoltaic power supply apparatus 100 of the air conditioning system; and controlling the power supply quantity ratio of the photovoltaic power supply device 100 of the air conditioning system and the external power supply device 130 according to the power generation quantity of the photovoltaic power supply device 100 of the air conditioning system.
As shown in fig. 2 and fig. 3, the air conditioning system provided by the present application combines an air conditioning indoor unit 80 and an air conditioning outdoor unit 90 with a ventilation device 70 and a photovoltaic power supply device 100, so as to solve the problem of high energy consumption of the air conditioning system in the prior art, achieve high efficiency and energy saving of the air conditioning system and temperature and humidity control, and achieve the purpose of low carbon emission by adopting a parallel coupling cascade air suction compression refrigeration technology and a low GWP refrigerant, and in addition, because a fan 71 in the ventilation device 70 adopts a centrifugal fan, the air conditioning system is beneficial to structural compactness, thereby reducing the size of an air conditioning casing.
The air conditioning system provided by the application adopts a composite efficient air conditioning system, takes 'parallel coupling cascade air suction compression refrigeration cycle' as a core, combines natural energy utilization technologies such as evaporative cooling and photovoltaic direct drive, and constructs the efficient composite air conditioning system. The application provides an air conditioning system can reduce refrigerating unit's load. The mechanical ventilation directly utilizes the temperature difference and the humidity difference to save energy; mechanical ventilation humidification realizes the isenthalpic cooling through placing the wet film behind the new trend, under the condition that satisfies indoor requirement, reduces indoor sensible heat load. The application provides an air conditioning system make full use of natural energy, reaches energy-conserving effect.
The air conditioning system provided by the application adopts the refrigerating unit with parallel coupling cascade air suction compression refrigeration cycle, so that the heat and humidity load processing capacity of the unit is obviously improved, and the energy efficiency of the unit is improved. The indoor double-evaporator system adopting cascade heat exchange processes sensible heat and latent heat load in a grading way, the high-temperature evaporator processes sensible heat load, and the low-temperature evaporator mainly processes latent heat load, so that decoupling control of temperature and humidity is realized, and energy-saving and efficient operation under a wider working condition can be realized while independent control of temperature and humidity is ensured; meanwhile, through double evaporation temperatures, irreversible loss in the heat transfer process of the evaporator is reduced, and the heat exchange efficiency of the multi-row heat exchanger is improved; a novel compressor with double-suction parallel compression is adopted outdoors, so that the flash dryness at the inlet of the evaporator can be reduced through parallel compression, and the heat exchange efficiency and the system energy efficiency are further improved; meanwhile, the parallel coupling cascade air suction compression cycle can realize high-efficiency operation in a wide working condition range.
The air conditioning system provided by the application adopts the photovoltaic direct-drive technology, and can adjust the power supply proportion of the commercial power and the solar energy in real time according to the power required by the operation of the air conditioner and the photovoltaic power generation power through the multi-power management coordination control, energy complementation and smooth switching technology, so that the efficient utilization of the solar energy is realized.
The air conditioning system provided by the application takes vapor compression refrigeration as a core, and combines ventilation and solar technologies to create a composite refrigeration household air conditioning system;
the air conditioning system provided by the application adopts low GWP environment-friendly refrigerant which can be R32, R152a and the like.
The application provides an air conditioning system includes: the indoor unit 80 and the outdoor unit 90 of the air conditioner, the ventilator 70, the photovoltaic power supply device 100, the mechanical ventilator, the indoor controller 110, the outdoor controller 60, and the like.
The outdoor unit 90 includes: compressor 10, condensing unit 20, etc.
The condensing unit 20 adopted by the refrigerating unit preferably adopts a micro-channel heat exchanger, so that the filling amount of the system is reduced, and the cost is reduced.
It should be noted that, in this application, the compressor 10 adopted by the refrigerating unit is a novel rotor compressor of "double-suction parallel compression", the compressor 10 provided by this application has three independent compression cylinders, the compressor 10 includes a first suction port 11, a second suction port 12, a third suction port 13 and an exhaust port 14, and combines a dual-temperature evaporation device 40 and a middle flash device 30 to form a parallel coupling step suction compression refrigeration cycle, the gas of the first suction port 11 is from middle air supplement, the arrangement of the compression cylinders can reduce the flash dryness of the inlets of the two evaporators, improve the heat exchange efficiency and the system energy efficiency of the evaporators, and especially, the efficiency is improved remarkably when the temperature difference between the indoor and the outdoor is large or the load of the refrigerating unit is large; the gas of the second air suction port 12 and the gas of the third air suction port 13 respectively come from the first evaporator 41 and the second evaporator 42, and the arrangement of the two compression cylinders can realize high-temperature and low-temperature evaporation heat exchange, so that the air is cooled in a gradient manner, the irreversible loss in the heat exchange process is reduced, the heat exchange efficiency and the system energy efficiency of the evaporation device 40 are improved, and the effect is remarkably improved especially when the indoor and outdoor temperature difference is small or the load of a refrigerating unit is small; therefore, the parallel coupling cascade suction compression refrigeration cycle formed by the three compression cylinders can realize coupling and improving the energy efficiency of the system in a wide range.
Specifically, the high-temperature and high-pressure refrigerant gas condensing device 20 discharged from the discharge port 14 of the compressor 10 condenses; the refrigerant from the condensing unit 20 is changed into a gas-liquid two-phase state by the third throttling unit 170, and enters the flash device 30 for gas-liquid separation. The gas-phase refrigerant in the flash device 30 enters the first suction port 11 of the compressor 10; the liquid phase refrigerant is divided into two paths, one path enters the first evaporator 41 through the first throttling device 150, is subjected to heat exchange and evaporation to form saturated or overflowed gas, and is sucked by the second suction port 12 of the compressor 10, and the other path enters the second evaporator 42 through the second throttling device 160, is subjected to heat exchange and evaporation to form saturated or overflowed gas, and is sucked by the third suction port 13 of the compressor 10.
The mechanical ventilation device comprises a ventilation device 70, the ventilation device 70 comprises a fan 71, a humidifying structure 72 and the like, and the fan 71 is a centrifugal fan.
As shown in fig. 1, the humidifying structure 72 includes a wet film 721, a first spraying structure 722, a first water pan 723, a water pump, and the like; alternatively, the humidifying structure 72 may adopt a humidifying form such as ultrasonic waves. In the mechanical ventilation mode, the water pressure of tap water is directly sprayed to the wet film 721, and the fresh air is humidified and cooled by the rotation of the fan blades of the centrifugal fan, so that extra power consumption is avoided; in addition, the mechanical ventilation and humidification realizes isenthalpic cooling by placing the wet film 721 at the position of the fresh air inlet, so that the indoor sensible heat load is reduced under the condition of meeting indoor requirements, the refrigeration unit is prevented from being started for a long time, and the energy consumption of an air conditioning system is favorably reduced; meanwhile, the introduction of outdoor fresh air can improve the indoor air quality and improve the user experience.
As shown in fig. 1, the first spray structure 722 is in communication with the external water source 120 via a pipe.
And the outdoor controller adjusts the operation conditions of all the components according to different parameters of the room.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. An air conditioning system, comprising:
a compressor (10), the compressor (10) having a first suction port (11), a second suction port (12), a third suction port (13), and a discharge port (14);
a condensing device (20), an inlet of the condensing device (20) being in communication with the exhaust port (14);
the flash device (30) is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the condensing device (20) is communicated with the refrigerant inlet, and the first refrigerant outlet is communicated with the first air suction port (11);
the evaporator (40) comprises a first evaporator (41) and a second evaporator (42) which are arranged in parallel, an inlet of the first evaporator (41) and an inlet of the second evaporator (42) are communicated with the second refrigerant outlet, an outlet of the first evaporator (41) is communicated with the second suction port (12), and an outlet of the second evaporator (42) is communicated with the third suction port (13);
the ventilation device (70) comprises a fan (71) and a humidifying structure (72), and an air inlet of the fan (71) is communicated with the outside so as to introduce fresh air from the outside into the inside of the room; the humidifying structure (72) is arranged adjacent to the fan (71), and the humidifying structure (72) is used for providing moisture for fresh air introduced by the fan (71);
wherein the first evaporator (41) is used for processing sensible heat load in the chamber, and the second evaporator (42) is used for processing latent heat load in the chamber to independently control temperature and humidity in the chamber.
2. Air conditioning system according to claim 1, characterized in that the first evaporator (41) and the second evaporator (42) are arranged opposite, the first evaporator (41) being arranged on the windward side and the second evaporator (42) being arranged on the leeward side.
3. The air conditioning system of claim 2, further comprising:
a first throttling device (150), wherein the first throttling device (150) is arranged on a pipeline between an inlet of the first evaporator (41) and a second refrigerant outlet of the flash device (30).
4. The air conditioning system of claim 3, further comprising:
and the second throttling device (160) is arranged on a pipeline between the inlet of the second evaporator (42) and the second refrigerant outlet of the flash device (30).
5. The air conditioning system of claim 4, further comprising:
and the third throttling device (170) is arranged on a pipeline between the outlet of the condensing device (20) and the refrigerant inlet of the flash device (30).
6. The air conditioning system of claim 1, further comprising:
the photovoltaic power supply device (100), the photovoltaic power supply device (100) sets up outdoors, photovoltaic power supply device (100) with compressor (10) electricity is connected, in order to supply power to compressor (10).
7. The air conditioning system of claim 6, further comprising:
the outdoor controller (60) comprises a first control element, the photovoltaic power supply device (100) and the external power supply device (130) are electrically connected with the first control element, and the first control element is used for controlling the power supply quantity proportion of the photovoltaic power supply device (100) and the external power supply device (130);
when the power supply amount of the photovoltaic power supply device (100) is smaller than or equal to a preset power amount, the outdoor controller (60) controls the external power supply device (130) to be electrically connected with the compressor (10), so that the photovoltaic power supply device (100) and the external power supply device (130) jointly supply power to the compressor (10).
8. The air conditioning system of claim 7, wherein the outdoor controller (60) further comprises:
and the second control element is connected with an air conditioner indoor unit (80) of the air conditioner system, an air conditioner outdoor unit (90) of the air conditioner system and a ventilation device (70) of the air conditioner system, and is used for controlling the running conditions of the air conditioner indoor unit (80), the air conditioner outdoor unit (90) and the ventilation device (70).
9. The air conditioning system of claim 1, further comprising a refrigerant, wherein the refrigerant is a low GWP refrigerant.
10. An air conditioner comprising an air conditioning system, characterized in that the air conditioning system is the air conditioning system of any one of claims 1 to 9.
11. A control method of an air conditioning system for controlling the air conditioning system according to any one of claims 1 to 9, the control method comprising:
detecting an outdoor temperature, an indoor temperature and an outdoor relative humidity;
controlling a fan (71) of the ventilation device (70) to operate when the outdoor temperature is lower than the indoor temperature;
obtaining an outdoor air enthalpy value according to the outdoor dry bulb temperature and the outdoor relative humidity, and controlling a fan (71) of the ventilation device (70) and a humidifying structure (72) of the ventilation device (70) to operate when the outdoor temperature is higher than the indoor temperature and the outdoor air enthalpy value is lower than a preset enthalpy value;
and when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is higher than the preset enthalpy value, controlling the operation of an indoor air conditioner (80) of the air conditioning system and an outdoor air conditioner (90) of the air conditioning system.
12. The control method of an air conditioning system according to claim 11, characterized by further comprising:
detecting the outlet air temperature of a wet film (721) passing through a humidifying structure (72) of the ventilating device (70);
when the outlet air temperature of the wet film (721) passing through the humidifying structure (72) of the ventilation device (70) is lower than the indoor dry bulb temperature, the fan (71) of the ventilation device (70) and the humidifying structure (72) of the ventilation device (70) are continuously operated;
and when the outlet air temperature is higher than the indoor temperature, stopping the operation of the fan (71) of the ventilation device (70) and the humidifying structure (72) of the ventilation device (70), and controlling the operation of an air-conditioning indoor unit (80) of the air-conditioning system and the operation of an air-conditioning outdoor unit (90) of the air-conditioning system.
13. The control method of an air conditioning system according to claim 11, characterized by further comprising:
detecting the power generation amount of a photovoltaic power supply device (100) of the air conditioning system;
controlling the power supply quantity ratio of the photovoltaic power supply device (100) of the air conditioning system and an external power supply device (130) according to the power generation quantity of the photovoltaic power supply device (100) of the air conditioning system.
CN202010821373.0A 2020-08-14 2020-08-14 Air conditioning system, air conditioner and control method of air conditioning system Pending CN111895499A (en)

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EP2746687A1 (en) * 2012-12-20 2014-06-25 Mitsubishi Electric Corporation Air conditioner
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CN110374876A (en) * 2019-08-07 2019-10-25 珠海凌达压缩机有限公司 Dual temperature independent compressor and air-conditioning system parallel
CN110748974A (en) * 2019-11-14 2020-02-04 珠海格力电器股份有限公司 Air conditioning system and air conditioning system control method
CN210861783U (en) * 2019-09-29 2020-06-26 珠海格力电器股份有限公司 Refrigerant circulation system and air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2746687A1 (en) * 2012-12-20 2014-06-25 Mitsubishi Electric Corporation Air conditioner
CN107655103A (en) * 2017-08-29 2018-02-02 珠海格力电器股份有限公司 A kind of control method of air-conditioner outdoor unit, air conditioner and air conditioner
CN110374876A (en) * 2019-08-07 2019-10-25 珠海凌达压缩机有限公司 Dual temperature independent compressor and air-conditioning system parallel
CN210861783U (en) * 2019-09-29 2020-06-26 珠海格力电器股份有限公司 Refrigerant circulation system and air conditioner
CN110748974A (en) * 2019-11-14 2020-02-04 珠海格力电器股份有限公司 Air conditioning system and air conditioning system control method

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