CN110748970A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN110748970A CN110748970A CN201911114979.4A CN201911114979A CN110748970A CN 110748970 A CN110748970 A CN 110748970A CN 201911114979 A CN201911114979 A CN 201911114979A CN 110748970 A CN110748970 A CN 110748970A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009423 ventilation Methods 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 238000004891 communication Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 238000001816 cooling Methods 0.000 claims description 38
- 238000005507 spraying Methods 0.000 claims description 37
- 239000003507 refrigerant Substances 0.000 claims description 29
- 238000001704 evaporation Methods 0.000 claims description 12
- 238000010248 power generation Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 10
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- 238000004134 energy conservation Methods 0.000 description 6
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- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005399 mechanical ventilation Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
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- 238000007906 compression Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
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- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
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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
- F24F1/0007—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning system and a control method of the air conditioning system, wherein the air conditioning system comprises a photovoltaic module arranged outdoors; the ventilation structure is at least partially arranged at the communication position between the indoor space and the outdoor space and is connected with the photovoltaic module so as to provide electric energy for the ventilation structure through the photovoltaic module; the ventilation structure comprises a fan and a humidification mechanism, wherein the fan is rotatably arranged so as to introduce outdoor fresh air into a room through the fan; at least part of the humidifying mechanism is arranged opposite to the fan, and the humidifying mechanism is provided with a humidifying part for providing moisture for fresh air introduced by the fan so as to improve the humidity of the fresh air entering the room. Through the technical scheme provided by the invention, the technical problem of low comfort of the air conditioning system in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of air conditioning devices, in particular to an air conditioning system and a control method of the air conditioning system.
Background
At present, general air conditioning systems in the prior art all have a refrigeration mode, and when the air conditioning systems are in the refrigeration mode, indoor air can be conveniently reduced. Part air conditioning system has the new trend mode among the prior art, can be convenient for introduce the new trend to indoor through this new trend mode, is convenient for promote user's comfort level.
However, the air conditioning system in the prior art has high energy consumption, which is not beneficial to energy saving.
Disclosure of Invention
The invention mainly aims to provide an air conditioning system and a control method of the air conditioning system, so as to solve the technical problem that the energy consumption of the air conditioning system in the prior art is high.
In order to achieve the above object, according to one aspect of the present invention, there is provided an air conditioning system including: the photovoltaic module is arranged outdoors; the ventilation structure is at least partially arranged at the communication position between the indoor space and the outdoor space and is connected with the photovoltaic module so as to provide electric energy for the ventilation structure through the photovoltaic module; the ventilation structure comprises a fan and a humidification mechanism, wherein the fan is rotatably arranged so as to introduce outdoor fresh air into a room through the fan; at least part of the humidifying mechanism is arranged opposite to the fan, and the humidifying mechanism is provided with a humidifying part for providing moisture for fresh air introduced by the fan so as to improve the humidity of the fresh air entering the room.
Furthermore, humidification portion includes wet membrane, and at least part of wet membrane sets up with the air outlet or the air intake of fan relatively to improve the humidity of the new trend through wet membrane.
Further, the humidification mechanism further includes: the first spraying mechanism is arranged opposite to at least part of the wet film so that water sprayed by the first spraying mechanism falls onto the wet film.
Further, the humidification mechanism further includes: the first water receiving tray is arranged below the wet membrane so as to contain water falling from the wet membrane.
The air conditioning system further comprises a compressor, a condensing device and an evaporating device, wherein the compressor, the condensing device and the evaporating device are sequentially connected through pipelines to form a refrigerant circulating system; the compressor is provided with a first exhaust port, a second exhaust port, a first air suction port and a second air suction port, the first exhaust port is used for being communicated with the first air suction port, and the second exhaust port is used for being communicated with the second air suction port; the condensing device comprises a first condenser and a second condenser which are arranged in parallel, the first condenser is communicated with the first exhaust port, and the second condenser is communicated with the second exhaust port; the evaporator comprises a first evaporator and a second evaporator which are arranged in parallel, the first evaporator is communicated with the first air suction port, and the second evaporator is communicated with the second air suction port.
Further, the air conditioning system further includes: and the cooling device is arranged opposite to at least part of the condensing device so as to carry out cooling treatment on the condensing device through the cooling device.
Furthermore, the cooling device is arranged opposite to the heat exchange part of the first condenser, the first condenser and the second condenser are arranged opposite to each other, and the first condenser is positioned on one side, far away from the room, of the second condenser.
Further, the cooling device includes: and the water spray opening of the second spraying mechanism is arranged opposite to the first condenser so that the water sprayed by the second spraying mechanism falls on the heat exchange part of the first condenser.
Further, the cooling device further includes: and the second water receiving tray is positioned below the first condenser and is used for containing water falling from the first condenser.
Further, the cooling device includes: the spraying mechanism is provided with a spraying opening opposite to the heat exchange part of the first condenser, so that the first condenser is cooled by mist water sprayed by the spraying mechanism.
Furthermore, the air conditioning system comprises an intermediate heat exchanger, the intermediate heat exchanger is provided with a first refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outflow port of the first condenser and the outflow port of the second condenser are communicated with the first refrigerant inlet, the first refrigerant outlet is communicated with the first evaporator, and the second refrigerant outlet is communicated with the second evaporator.
Further, the air conditioning system further comprises an outdoor controller, the outdoor controller comprises a first control piece, the photovoltaic module and the external power supply are connected with the first control piece, and the power supply quantity proportion of the photovoltaic module and the external power supply is controlled through the first control piece.
Furthermore, the outdoor controller also comprises a second control element, and the air conditioner indoor unit, the air conditioner outdoor unit and the ventilation structure are all connected with the second control element so as to control the operation conditions of the air conditioner indoor unit, the air conditioner outdoor unit and the ventilation structure through the second control element.
Furthermore, the air conditioning system also comprises a first detection device for detecting the indoor temperature and a second detection device for detecting the outdoor temperature, and the first detection device and the second detection device are both connected with the outdoor controller, so that the outdoor controller can control according to the temperature signal detected by the first detection device and the temperature signal detected by the second detection device.
According to another aspect of the present invention, there is provided a control method of an air conditioning system for the air conditioning system provided above, the control method of the air conditioning system including: detecting an outdoor temperature and an indoor temperature; and controlling the operation state of the ventilation structure of the air conditioning system according to the temperature difference between the outdoor temperature and the indoor temperature.
Further, the control method of the air conditioning system further includes: when the outdoor temperature is lower than the indoor temperature, controlling the fan of the ventilation structure to operate; when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is lower than a preset enthalpy value, controlling a fan of the ventilation structure and a humidification mechanism of the ventilation structure to operate; 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 air conditioning system is the air conditioning system provided above, and the control method of the air conditioning system further includes: and when the outdoor temperature is higher than the indoor temperature and the outdoor temperature is higher than the preset temperature value, controlling the cooling device of the air conditioning system to operate.
Further, the air conditioning system is the air conditioning system provided above, and the control method of the air conditioning system further includes: detecting the generating capacity of a photovoltaic module of the air conditioning system; and controlling the power supply quantity ratio of the photovoltaic module of the air conditioning system and an external power supply according to the power generation quantity of the photovoltaic module of the air conditioning system.
By applying the technical scheme of the invention, when the indoor and outdoor temperature difference is not large, the fan of the ventilation structure can be operated to provide fresh air indoors by arranging the ventilation structure when the indoor air quality is low; when the humidity of room air is lower, can make fan and humidification mechanism move simultaneously to humidification portion through humidification mechanism provides moisture to the new trend, with the humidity that improves the indoor new trend of entering, thereby can improve the use comfort who is used for, need not use like this and start indoor set of air conditioning and air condensing units and reduced the energy consumption. Meanwhile, the ventilation structure is connected with the photovoltaic module, so that high-efficiency utilization of solar energy can be realized conveniently, and energy conservation and environmental protection can be realized. Therefore, the technical problem that the energy consumption of the air conditioning system in the prior art is high can be solved through the technical scheme provided by the invention.
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 is a schematic structural diagram illustrating an air conditioning system according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an installation structure of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic structural view illustrating another angle of a mounting structure of an air conditioning system according to an embodiment of the present invention; and
fig. 4 is a schematic structural diagram illustrating a ventilation structure of an air conditioning system according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a photovoltaic module; 20. a ventilation structure; 21. a fan; 22. a humidifying mechanism; 221. a humidifying section; 222. a first spraying mechanism; 223. a first water pan; 30. a compressor; 40. a condensing unit; 41. a first condenser; 42. a second condenser; 50. an evaporation device; 51. a first evaporator; 52. a second evaporator; 60. a cooling device; 61. a second spraying mechanism; 62. a second water pan; 70. an intermediate heat exchanger; 80. an outdoor controller; 90. an air-conditioning indoor unit; 100. an air conditioner outdoor unit; 110. an indoor controller.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 4, an air conditioning system according to an embodiment of the present invention includes a photovoltaic module 10 and a ventilation structure 20, where the photovoltaic module 10 is disposed outdoors. At least part of the ventilation structure 20 is disposed at the communication between the indoor and outdoor, and the ventilation structure 20 is connected to the photovoltaic module 10 to supply electric power to the ventilation structure 20 through the photovoltaic module 10. The ventilation structure 20 comprises a fan 21 and a humidifying mechanism 22, wherein the fan 21 is rotatably arranged so as to introduce outdoor fresh air into the room through the fan 21; at least part of the humidifying mechanism 22 is disposed opposite to the fan 21, and the humidifying mechanism 22 has a humidifying portion 221 for supplying moisture to the fresh air introduced by the fan 21 to increase the humidity of the fresh air entering the room. Specifically, the photovoltaic module 10 in the present embodiment includes components such as a high-efficiency photovoltaic panel, a storage battery, and an inverter. The photovoltaic module 10 adopts a photovoltaic direct drive technology, and can adjust the power supply ratio of commercial power and solar energy in real time according to the power required by the operation of an air conditioning system and the photovoltaic power generation power through a multi-power management coordination control, energy complementation and smooth switching technology, so that the efficient utilization of the solar energy is realized.
By adopting the air conditioning system provided by the embodiment, when the indoor and outdoor temperature difference is not large, the fan 21 of the ventilation structure 20 can be operated to provide fresh air for the indoor space by arranging the ventilation structure 20 when the indoor air quality is low; when the humidity of the indoor air is low, the fan 21 and the humidification mechanism 22 can be simultaneously operated, so that moisture is provided to the fresh air through the humidification portion 221 of the humidification mechanism 22, the humidity of the fresh air entering the room is improved, the use comfort of the fresh air is improved, the indoor unit 90 of the air conditioner and the outdoor unit 100 of the air conditioner do not need to be started, and energy consumption is reduced. Meanwhile, the ventilation structure 20 is connected with the photovoltaic module 10, so that efficient utilization of solar energy can be realized conveniently, and energy conservation and environmental protection can be realized.
The humidifying portion 221 in the present embodiment includes a wet film. Specifically, at least part of the wet film is arranged opposite to an air outlet or an air inlet of the fan 21 so as to improve the humidity of fresh air passing through the wet film. In this embodiment, at least part of the wet film is arranged at the air outlet of the fan 21, that is, the wet film is arranged on one side of the fan 21 away from the outdoor environment, so that the fresh air can be humidified better through the wet film, and the humidity of the indoor air can be improved better. The ventilation structure 20 in this embodiment can directly receive the wet membrane through running water pressure, realizes the humidification cooling of new trend through the rotation of fan 21, avoids extra consumption. This ventilation blower 21 constructs for mechanical ventilation humidification form, 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, avoids the part time to open refrigerating unit, has reduced air conditioning system's energy consumption.
Alternatively, the humidifying unit 221 in the present embodiment may adopt a humidifying structure of ultrasonic waves. The blower 21 of the ventilation structure 20 in this embodiment includes a motor and a fan, which may be a centrifugal fan or an axial fan. When the centrifugal fan is employed, the size can be reduced.
Specifically, the humidifying mechanism 22 in this embodiment further includes a first spraying mechanism 222, and the first spraying mechanism 222 is disposed opposite to at least a portion of the wet film, so that the water sprayed by the first spraying mechanism 222 falls on the wet film. First spray mechanism 222 in this embodiment includes first connecting tube and first shower head, and first connecting tube is connected the setting with first shower head, lets in water in the first connecting tube, and water is spout from first shower head's the mouth that sprays behind first connecting tube, and is concrete, can make the structure of first shower head can be similar to the structure for the shower head to spray water to wet membrane better on, so that make wet membrane turn into the water vapor form with water better, so that improve the humidity that gets into indoor new trend better.
In this embodiment, the humidifying mechanism 22 further includes a first water receiving tray 223, and the first water receiving tray 223 is disposed below the wet film, so that the first water receiving tray 223 receives water falling from the wet film. By adopting the arrangement, the water falling from the wet film can be collected, and the interference of the water falling from the wet film on other parts is avoided. Specifically, the humidifying mechanism 22 in this embodiment may further include a first pump body, and the first pump body is used for pumping water in the first water-saving tray into the first connecting pipeline, so as to be reused and save water resources.
In this embodiment, the air conditioning system further includes a compressor 30, a condensing device 40, and an evaporating device 50, and the compressor 30, the condensing device 40, and the evaporating device 50 are sequentially connected through a pipeline to form a refrigerant circulation system. The compressor 30 has a first exhaust port for communicating with the first intake port, a second exhaust port for communicating with the second intake port, a first intake port, and a second intake port. The condensing device 40 includes a first condenser 41 and a second condenser 42 arranged in parallel, the first condenser 41 communicating with the first exhaust port, the second condenser 42 communicating with the second exhaust port. The evaporator 50 includes a first evaporator 51 and a second evaporator 52 arranged in parallel, the first evaporator 51 is communicated with the first air inlet, the second evaporator 52 is communicated with the second air inlet, the first evaporator 51 is a high-temperature evaporator, and the second evaporator 52 is a low-temperature evaporator. The compressor 30 in this embodiment is of a double-suction and double-discharge structure, and by adopting such an arrangement, the heat exchange efficiency can be improved conveniently, and the irreversible loss of the evaporation device 50 and the condensation device 40 in the heat transfer process can be reduced through the double evaporation temperatures and the double condensation temperatures. Meanwhile, the high-pressure liquid of the low evaporation temperature system can be supercooled through the refrigerating capacity of the high evaporation temperature. The compressor 30 in this embodiment may adopt a double-suction and double-exhaust low-GWPR 152a rotor compressor 30, and a cascade heat exchange coupling evaporative condenser is used to construct a cascade suction and exhaust vapor compression refrigeration cycle, thereby realizing independent temperature and humidity control.
Specifically, the refrigerant enters the low-temperature condenser after exiting from the first discharge port of the compressor 30; the refrigerant exiting the second discharge port of the compressor 30 enters the high temperature condenser and is then throttled through a capillary tube to a pressure similar to that of the low temperature condenser. The two paths of refrigerants are converged and enter the room after coming out. The refrigerant entering the room enters the high temperature evaporator and the low temperature evaporator, respectively, and the refrigerant coming out of the high temperature evaporator enters the second air suction port of the compressor 30; the refrigerant from the low temperature evaporator enters a first suction port of the compressor 30. (the high temperature evaporator corresponds to the high temperature condenser) water supply line delivers city water to the mechanical ventilator and outdoor evaporative cooling unit 60. And respectively carrying out humidification treatment by adopting a spraying mode. The room controller 110 adjusts the operation of each component according to different parameters of the room.
Specifically, the high-temperature evaporator in this embodiment mainly handles indoor sensible heat load, and the low-temperature evaporator mainly handles indoor latent heat load, and the high-temperature evaporator and the low-temperature evaporator are arranged in parallel. The refrigerants of the high-temperature evaporator and the low-temperature evaporator are independent of each other. The air to be treated firstly passes through the high-temperature evaporator to be cooled (without dehumidification), then passes through the low-temperature evaporator to be dehumidified (simultaneously cooled), and then is sent into the room after reaching the air supply condition, thereby achieving the purpose of independent temperature and humidity control and better improving the use comfort of users.
In order to improve the energy efficiency of the whole air conditioning system, the air conditioning system in this embodiment further includes a cooling device 60, and the cooling device 60 is disposed opposite to at least a portion of the condensing device 40, so as to perform a cooling process on the condensing device 40 through the cooling device 60, so as to reduce the condensing temperature of the condensing device 40.
Specifically, the cooling device 60 in this embodiment is disposed opposite to the heat exchanging portion of the first condenser 41, the first condenser 41 is disposed opposite to the second condenser 42, and the first condenser 41 is located on the side of the second condenser 42 away from the room. In this embodiment, the first condenser 41 is located on the windward side, the second condenser 42 is located on the leeward side, the first condenser 41 is a low-temperature condenser, the second condenser 42 is a high-temperature condenser, and the condensing temperatures of the low-temperature condenser and the high-temperature condenser are different.
Specifically, the cooling device 60 may include a second spraying mechanism 61 and a second water receiving tray 62, and a water spraying port of the second spraying mechanism 61 is disposed opposite to the first condenser 41, so that water sprayed by the second spraying mechanism 61 falls on the heat exchanging portion of the first condenser 41. The second water receiving tray 62 is located below the first condenser 41 to receive water falling from the first condenser 41 through the second water receiving tray 62. The second spraying mechanism 61 in this embodiment may include a second connecting pipe and a second spraying head, the second connecting pipe and the second spraying head are connected, the second connecting pipe is used for introducing water, the water flows out from the second spraying head after passing through the second connecting pipe, and the structure of the second spraying head is similar to that of a shower head. In this embodiment, the second basin interior mechanism may further include a second pump body, and the second pump body is used to pump the books in the second water pan 62 to the second connecting pipe, so as to be reused and save water resources. When the second spraying mechanism 61 is employed, the first condenser 41 is preferably a finned tube heat exchanger to enhance the effect of evaporative cooling. The cooling device 60 in this embodiment may further include a water storage tank and a water distributor. The water sprayed by the second spraying mechanism 61 is left above or in front of the heat exchanger, the water flows to the fins and heat exchange tubes of the first condenser 41 through the water distributor for evaporation, the water which is not evaporated flows into the water storage tank through the second water pan 62, and the water in the water storage tank is pumped to the upper side or in front of the first condenser 41 by the second pump body for circulation.
Alternatively, the cooling device 60 may include a spraying mechanism, and a spraying port of the spraying mechanism is disposed opposite to the heat exchanging portion of the first condenser 41, so that the temperature of the first condenser 41 is reduced by mist water sprayed by the spraying mechanism. Such an arrangement is adopted so that the mist can uniformly fall on the heat exchanging portion of the first condenser 41, so that the effect of reducing the temperature of the first condenser 41 is uniformly improved. When a spray mechanism is employed, the first condenser 41 is preferably a microchannel heat exchanger, in order to reduce the system charge. In particular, the spraying mechanism may be an ultrasonic atomizing assembly or a compressed atomizing assembly so as to atomize water in the pipeline. The mist water sprayed by the spraying mechanism enters the air and is evaporated and cooled, and the cooled air flows through the first condenser 41 for heat exchange.
In this embodiment, the air conditioning system further includes an intermediate heat exchanger 70, the intermediate heat exchanger 70 has a first refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the first condenser 41 and the outlet of the second condenser 42 are both communicated with the first refrigerant inlet, the first refrigerant outlet is communicated with the first evaporator 51, and the second refrigerant outlet is communicated with the second evaporator 52. With this arrangement, the increase in enthalpy at the inlet of the second evaporator 52 can be reduced, and the heat exchange amount of the low-temperature heat exchanger (i.e., the first heat exchanger) can be increased.
Specifically, the air conditioning system further includes an outdoor controller 80, the outdoor controller 80 includes a first control element, and the photovoltaic module 10 and the external power supply are connected to the first control element, so as to control the power supply quantity ratio of the photovoltaic module 10 and the external power supply through the first control element. Specifically, when the power generation amount of the photovoltaic module 10 is smaller, the first control element controls the external power supply to provide more electric power; when the power generation amount of the photovoltaic module 10 is large, the first control element controls the external power supply to provide less power, so that energy is saved.
In this embodiment, the outdoor controller 80 further includes a second control element, and the indoor air conditioner unit 90, the outdoor air conditioner unit 100 and the ventilation structure 20 are connected to the second control element, so as to control the operation conditions of the indoor air conditioner unit 90, the outdoor air conditioner unit 100 and the ventilation structure 20 through the second control element. By adopting the arrangement, different working modes can be selected according to the indoor and outdoor temperature difference conditions, and when the outdoor temperature is lower than the indoor temperature, the ventilation structure 20 is controlled to operate; when the outdoor temperature is higher than the indoor temperature, the operations of the indoor air conditioner 90 and the outdoor air conditioner 100 may be controlled. Therefore, different working modes can be conveniently selected according to actual use conditions, so that energy consumption loss is reduced, and energy conservation is realized. Specifically, the outdoor unit 100 of the present embodiment includes a compressor 30, a condensing unit 40, a cooling unit 60, and the like. The indoor air conditioner 90 in this embodiment includes an evaporator 50, an intermediate heat exchanger (i.e., the intermediate heat exchanger 70), and the like.
Specifically, the air conditioning system in this embodiment further includes a first detection device for detecting an indoor temperature and a second detection device for detecting an outdoor temperature, and both the first detection device and the second detection device are connected to the outdoor controller 80, so that the outdoor controller 80 performs control according to a temperature signal detected by the first detection device and a temperature signal detected by the second detection device. With such an arrangement, the outdoor controller 80 can select a corresponding operating mode according to the indoor and outdoor temperature difference, so as to reduce the energy consumption loss better.
In this embodiment, the air conditioning system further includes an indoor controller 110, and both the air deflector and the air sweeping blade of the indoor unit 90 of the air conditioner are connected to the indoor controller 110, so that the indoor controller 110 controls the operation conditions of the air deflector and the air sweeping blade. The air conditioning system in this embodiment further includes a photovoltaic module 10, and the ventilation structure 20, the air conditioning indoor unit 90 of the air conditioning system, and the air conditioning outdoor unit 100 of the air conditioning system are all connected to the photovoltaic module 10, so as to provide electric energy to the ventilation structure 20, the air conditioning indoor unit 90, and the air conditioning outdoor unit 100 through the photovoltaic module 10, so as to fully utilize natural energy, and to better achieve an energy saving effect.
In this embodiment, solar energy is collected by the photovoltaic panel and converted into electrical energy for the indoor unit 90, the outdoor unit and the mechanical ventilation device of the air conditioner. The water supply line delivers city water to the mechanical ventilation fan and outdoor evaporative cooling unit 60. And respectively carrying out humidification treatment by adopting a spraying mode.
The second embodiment of the invention provides a control method of an air conditioning system, which is used for the air conditioning system provided by the first embodiment and comprises the following steps: detecting an outdoor temperature and an indoor temperature; the operation condition of the ventilation structure 20 of the air conditioning system is controlled according to the temperature difference between the outdoor temperature and the indoor temperature. By adopting the arrangement, the working mode of the air conditioning system is not single any more, the operation of the ventilation structure 20 can be controlled according to the actual indoor and outdoor temperature difference condition, and unnecessary energy loss is reduced, so that energy conservation is better realized.
Specifically, the control method of the air conditioning system in this embodiment further includes: when the outdoor temperature is lower than the indoor temperature, controlling the fan 21 of the ventilation structure 20 to operate; when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is lower than the preset enthalpy value, controlling the fan 21 of the ventilation structure 20 and the humidifying mechanism 22 of the ventilation structure 20 to operate; 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 90 of the air conditioning system and the outdoor air conditioner unit 100 of the air conditioning system to operate. By adopting the control method, different operation modes can be selected according to the indoor and outdoor temperature difference conditions, so that the energy consumption is reduced, and the energy conservation is facilitated.
Specifically, the air conditioning system in this embodiment includes the cooling device 60, and the control method of the air conditioning system further includes: and when the outdoor temperature is higher than the indoor temperature and the outdoor temperature is higher than the preset temperature value, controlling the cooling device 60 of the air conditioning system to operate. By adopting the control method, the condensing temperature of the condensing device 40 can be conveniently reduced when the outdoor temperature is overhigh, and the energy efficiency of the air conditioning system is improved.
Further, the air conditioning system includes a first control member, and the control method of the air conditioning system further includes: detecting the power generation amount of a photovoltaic module 10 of the air conditioning system; according to the power generation amount of the photovoltaic module 10 of the air conditioning system, the power supply amount ratio of the photovoltaic module 10 of the air conditioning system and an external power supply source is controlled through a first control element of the air conditioning system. Specifically, when the power supply amount of the photovoltaic module 10 is smaller, the first control element controls the external power supply to provide more power; when the power supply amount of the photovoltaic module 10 is larger, the first control part controls the external power supply to supply less power, so as to save energy.
The specific control flow in this embodiment includes that sunlight is converted into direct current by the solar panel in the photovoltaic module 10 to supply power to the ventilation structure 20 and the outdoor fan 21, and when the solar power is insufficient, the commercial power supplies power to the ventilation machine 21 and the outdoor fan 21.
The air conditioning operation mode in the present embodiment includes:
first mode (ventilation structure 20 single ventilation): when the outdoor temperature is lower than the indoor temperature, the system operates the ventilator 21 in a single ventilation mode, the ventilator 21 operates at a high speed, outdoor low-temperature air is introduced into the room, and the indoor temperature is reduced;
second mode (ventilation structure 20 single ventilation + humidification): when the outdoor temperature is higher than the indoor temperature, the enthalpy value of outdoor air is calculated by an outdoor dry bulb temperature and outdoor relative humidity through a control logic built-in formula, when the enthalpy value is lower than h, the system operates a ventilation and humidification mode of a ventilator 21, the outlet air temperature of the ventilator 21 is detected, when the outlet air temperature is lower than the indoor dry bulb temperature, the mode is kept unchanged, and when the outlet air temperature is higher than the indoor temperature, a second mode is operated;
third mode (pure air conditioning mode): when the outdoor temperature is higher than the indoor temperature, the enthalpy value of outdoor air is calculated by an outdoor dry bulb temperature and outdoor relative humidity through a control logic built-in formula, when the enthalpy value is higher than h, the system operates a pure air-conditioning mode, in the pure air-conditioning mode, the ventilator 21 stops operating, the compressor 30 is started, the indoor and outdoor fans 21 operate, and the indoor load is reduced by low-temperature air supply of the indoor unit;
fourth mode (air conditioning mode + cooling device 60 showers condensing device 40): when the outdoor temperature is higher than T, the low-temperature condenser water spraying device is started, tap water is guided to the top of the low-temperature condenser by the device to be sprayed, the temperature of the low-temperature condenser is reduced, and the energy efficiency of the whole machine is improved.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the energy consumption of the air conditioning system is reduced; the indoor air humidity is improved. The invention adopts a composite high-efficiency structural mode of the air conditioning system, and the air conditioning system takes 'step suction and exhaust steam compression refrigeration cycle' as a core and combines the natural energy utilization technologies such as evaporative cooling, photovoltaic direct drive and the like to construct a high-efficiency composite air conditioning system. The air conditioning system can reduce the load, and particularly, mechanical ventilation (namely a ventilation structure) directly utilizes the temperature difference and the humidity difference to save energy; mechanical ventilation (namely a ventilation structure) humidification is realized, isenthalpic cooling is realized by placing a wet film behind fresh air, and indoor sensible heat load is reduced under the condition of meeting indoor requirements. The air conditioning system can improve the energy efficiency of the refrigerating unit. When sufficient dry air energy exists outdoors (tdry-twet is more than 5 ℃), water is sprayed or sprayed on the surface of the outdoor finned tube condenser, and the inlet air temperature is reduced through evaporative cooling, so that the condensing temperature is reduced, and the energy efficiency of the unit is improved. The air conditioning system can make full use of natural energy and achieve the effect of energy conservation. The refrigerating unit adopting the 'cascade air suction and exhaust vapor compression refrigeration cycle' can obviously improve the heat and humidity load processing capacity of the unit and improve the energy efficiency of the unit. A double-evaporator system adopting cascade heat exchange indoors is used for treating sensible heat and latent heat loads in a grading manner, a low-temperature evaporator is mainly used for treating the latent heat loads, and a high-temperature evaporator is used for treating the sensible heat loads. A novel double-suction double-row compressor is adopted outdoors to compress the refrigerant to different pressure steps for heat exchange. By adopting the photovoltaic direct-drive technology and through multi-power management coordination control, energy complementation and smooth switching technology, the power supply proportion of the commercial power and the solar energy can be adjusted in real time according to the power required by the operation of the air conditioner and the photovoltaic power generation power, and the efficient utilization of the solar energy is realized.
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 application 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.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
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 should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
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 (18)
1. An air conditioning system, comprising:
a photovoltaic module (10) disposed outdoors;
-a ventilation structure (20), at least part of said ventilation structure (20) being arranged in indoor and outdoor communication, said ventilation structure (20) being connected to said photovoltaic module (10) to provide said ventilation structure (20) with electrical energy through said photovoltaic module (10);
wherein the ventilation structure (20) comprises a fan (21) and a humidifying mechanism (22), and the fan (21) is rotatably arranged so as to introduce fresh outdoor air into the room through the fan (21); at least part of the humidifying mechanism (22) is arranged opposite to the fan (21), and the humidifying mechanism (22) is provided with a humidifying part (221) used for providing moisture for fresh air introduced by the fan (21) so as to improve the humidity of the fresh air entering the room.
2. Air conditioning system according to claim 1, wherein the humidification section (221) comprises a wet film, at least part of which is arranged opposite to the air outlet or air inlet of the fan (21) to increase the humidity of the fresh air passing through the wet film.
3. The air conditioning system of claim 2, wherein the humidifying mechanism (22) further comprises:
the first spraying mechanism (222) is arranged opposite to at least part of the wet film, so that water sprayed by the first spraying mechanism (222) falls onto the wet film.
4. The air conditioning system of claim 3, wherein the humidifying mechanism (22) further comprises:
the first water receiving tray (223) is arranged below the wet film, so that the first water receiving tray (223) receives water falling from the wet film.
5. The air conditioning system of claim 1, further comprising a compressor (30), a condensing device (40), and an evaporating device (50), wherein the compressor (30), the condensing device (40), and the evaporating device (50) are connected in sequence by a pipeline to form a refrigerant circulation system;
the compressor (30) having a first exhaust port for communicating with the first intake port, a second exhaust port for communicating with the second intake port, a first intake port and a second intake port;
the condensing device (40) comprises a first condenser (41) and a second condenser (42) which are arranged in parallel, the first condenser (41) is communicated with the first exhaust port, and the second condenser (42) is communicated with the second exhaust port;
the evaporator (50) includes a first evaporator (51) and a second evaporator (52) arranged in parallel, the first evaporator (51) communicates with the first air intake port, and the second evaporator (52) communicates with the second air intake port.
6. The air conditioning system of claim 5, further comprising:
a cooling device (60), wherein the cooling device (60) is arranged opposite to at least part of the condensing device (40) so as to perform cooling treatment on the condensing device (40) through the cooling device (60).
7. Air conditioning system according to claim 6, characterized in that the cooling device (60) is arranged opposite to the heat exchanging part of the first condenser (41), the first condenser (41) and the second condenser (42) being arranged opposite to each other, the first condenser (41) being located on the side of the second condenser (42) facing away from the room.
8. Air conditioning system according to claim 7, characterized in that said cooling device (60) comprises:
and a water spraying port of the second spraying mechanism (61) is arranged opposite to the first condenser (41), so that water sprayed by the second spraying mechanism (61) falls on a heat exchange part of the first condenser (41).
9. Air conditioning system according to claim 8, characterized in that said cooling device (60) further comprises:
the second water collecting tray (62) is positioned below the first condenser (41) and used for collecting water falling from the first condenser (41) through the second water collecting tray (62).
10. Air conditioning system according to claim 7, characterized in that said cooling device (60) comprises:
and the spray opening of the spray mechanism is arranged opposite to the heat exchange part of the first condenser (41) so as to cool the first condenser (41) through fog sprayed by the spray mechanism.
11. Air conditioning system according to claim 5, characterized in that it comprises an intermediate heat exchanger (70), said intermediate heat exchanger (70) having a first refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outflow of said first condenser (41) and the outflow of said second condenser (42) both communicating with said first refrigerant inlet, said first refrigerant outlet communicating with said first evaporator (51), said second refrigerant outlet communicating with said second evaporator (52).
12. Air conditioning system according to claim 1, further comprising an outdoor controller (80), wherein the outdoor controller (80) comprises a first control member, and the photovoltaic module (10) and the external power supply are connected with the first control member to control the power supply quantity ratio of the photovoltaic module (10) and the external power supply through the first control member.
13. The system of claim 12, wherein the outdoor controller (80) further comprises a second control element, and the indoor unit (90), the outdoor unit (100) and the ventilation structure (20) are connected to the second control element, so as to control the operation conditions of the indoor unit (90), the outdoor unit (100) and the ventilation structure (20) through the second control element.
14. The air conditioning system as claimed in claim 13, further comprising a first detecting means for detecting an indoor temperature and a second detecting means for detecting an outdoor temperature, both the first detecting means and the second detecting means being connected to the outdoor controller (80) so that the outdoor controller (80) performs control based on a temperature signal detected by the first detecting means and a temperature signal detected by the second detecting means.
15. A control method of an air conditioning system, for use in the air conditioning system of any one of claims 1 to 14, the control method comprising:
detecting an outdoor temperature and an indoor temperature;
and controlling the running condition of a ventilation structure of the air conditioning system according to the temperature difference between the outdoor temperature and the indoor temperature.
16. The control method of an air conditioning system according to claim 15, further comprising:
when the outdoor temperature is lower than the indoor temperature, controlling the fan of the ventilation structure to operate;
when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is lower than a preset enthalpy value, controlling a fan of the ventilation structure and a humidifying mechanism of the ventilation structure to operate;
and when the outdoor temperature is higher than the indoor temperature and the enthalpy value of outdoor air is higher than a 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.
17. The method of controlling an air conditioning system according to claim 16, wherein the air conditioning system is the air conditioning system according to claim 6, and the method of controlling an air conditioning system further comprises:
and when the outdoor temperature is higher than the indoor temperature and the outdoor temperature is higher than a preset temperature value, controlling a cooling device of the air conditioning system to operate.
18. The method of controlling an air conditioning system according to claim 15, wherein the air conditioning system is the air conditioning system according to claim 12, and the method of controlling an air conditioning system further comprises:
detecting the power generation amount of a photovoltaic module of the air conditioning system;
and controlling the power supply quantity ratio of the photovoltaic module of the air conditioning system and an external power supply according to the power generation quantity of the photovoltaic module of the air conditioning system.
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| CN201911114979.4A CN110748970B (en) | 2019-11-14 | 2019-11-14 | Air conditioning system and control method thereof |
| PCT/CN2020/094966 WO2021093317A1 (en) | 2019-11-14 | 2020-06-08 | Air conditioning system and control method therefor |
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| CN201911114979.4A CN110748970B (en) | 2019-11-14 | 2019-11-14 | Air conditioning system and control method thereof |
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| WO2021093317A1 (en) | 2021-05-20 |
| CN110748970B (en) | 2023-12-08 |
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