CN111895495A

CN111895495A - Air conditioning system, air conditioner and control method of air conditioning system

Info

Publication number: CN111895495A
Application number: CN202010820516.6A
Authority: CN
Inventors: 梁祥飞; 黄明月; 郑波; 方金升; 皇甫启捷; 黄泽清
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-11-06

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, an evaporating device and a cooling device, wherein the compressor is provided with a first air suction port, a second air suction port and an exhaust port; the condensing device comprises a first condenser and a second condenser which are arranged in parallel, and an inlet of the first condenser and an inlet of the second condenser are communicated with the exhaust port; the outlet of the evaporation device is communicated with the second air suction port, and the outlet of the first condenser and the outlet of the second condenser are both communicated with the inlet of the evaporation device; the cooling device is positioned on one side of the condensing device and is used for cooling the condensing device. The invention solves the problem of low heat exchange efficiency of the air conditioning system in the prior art.

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

In the prior art, when an outdoor heat exchanger of an air conditioning system is in an operation process, the outdoor environment temperature is too high, so that the air inlet temperature of the outdoor heat exchanger is higher, the condensation temperature of the outdoor heat exchanger is high, the heat exchange effect is poor, the heat exchange efficiency of the air conditioning system cannot be ensured, and the energy conservation of the air conditioning system is not facilitated.

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 heat exchange efficiency of the air conditioning system in the prior art is low.

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, a condensing device, an evaporating device, and a cooling device, wherein the compressor has a first suction port, a second suction port, and a discharge port; the condensing device comprises a first condenser and a second condenser which are arranged in parallel, and an inlet of the first condenser and an inlet of the second condenser are communicated with the exhaust port; the outlet of the evaporation device is communicated with the second air suction port, and the outlet of the first condenser and the outlet of the second condenser are both communicated with the inlet of the evaporation device; the cooling device is positioned on one side of the condensing device and is used for cooling the condensing device.

Further, first condenser and second condenser set up relatively, and first condenser sets up in the leeward side, and the second condenser sets up in the windward side, and cooling device's at least part sets up with the heat transfer portion of second condenser relatively.

Further, the cooling device comprises a spraying structure, and a spraying port of the spraying structure is arranged opposite to the heat exchanging part, so that spraying liquid sprayed out of the spraying port falls on the heat exchanging part.

Furthermore, cooling device still includes the water collector, and the water collector is located the below of second condenser, and the water collector is used for collecting the spray liquid that falls from the second condenser.

Furthermore, the cooling device further comprises a return pipeline, one end of the return pipeline is communicated with the spraying port, and the second end of the return pipeline is communicated with the water receiving tray so as to convey spraying liquid in the water receiving tray to the spraying port through the return pipeline.

Furthermore, the cooling device also comprises a circulating water pump, the circulating water pump is arranged on the return pipeline, and the circulating water pump is used for conveying the spraying liquid in the water receiving tray to the spraying opening.

Further, cooling device still includes the water supply pipe, the one end and the external water source intercommunication of water supply pipe, the second end and the water collector intercommunication of water supply pipe to carry the external water source to spraying the mouth through water supply pipe.

Further, the cooling device comprises a spraying structure, and a spraying opening of the spraying structure is arranged opposite to the heat exchanging part, so that water mist sprayed out of the spraying opening cools the heat exchanging part.

Furthermore, the air conditioning system also comprises a flash device, the flash device is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the first condenser and the outlet of the second condenser are communicated with the refrigerant inlet, so that the refrigerant discharged from the outlet of the first condenser and the refrigerant discharged from the outlet of the second condenser are mixed and enter the flash device through the refrigerant inlet after being subjected to throttling treatment by the first throttling device, the first refrigerant outlet is communicated with the first air suction port, the inlet of the evaporation device is communicated with the second refrigerant outlet, and a second throttling device is arranged on a pipeline communicated with the inlet of the evaporation device and the second refrigerant outlet.

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 control element, the photovoltaic power supply device and the external power supply device are both electrically connected with the control element, and the control element is used for controlling the power supply quantity proportion of the photovoltaic 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 air conditioning system also comprises a ventilation device, the ventilation device comprises a fan and a humidifying structure, and an air inlet of the fan is communicated with the outside so as to introduce outdoor fresh air into the room; the humidification structure is arranged adjacent to the fan, and the humidification structure is used for providing moisture for fresh air introduced by the fan.

Further, the refrigerant is a low GWP refrigerant.

According to another aspect of the present invention, there is provided an air conditioner including an air conditioning system, the air conditioning system being the air conditioning system described above.

According to another aspect of the present invention, there is provided a control method of an air conditioning system, the control method being used for the air conditioning system described above, the control method including detecting an outdoor temperature, an indoor temperature, and an outdoor relative humidity; controlling a compressor of the air conditioning system to start according to the temperature difference between the outdoor temperature and the indoor temperature, and controlling a cooling device of the air conditioning system to start according to the humidity difference between the outdoor relative humidity and the preset humidity value; the method comprises the steps of obtaining an outdoor air enthalpy value according to outdoor dry bulb temperature and outdoor relative humidity, and controlling the compressor to start when the outdoor air enthalpy value is higher than a preset air enthalpy value.

Further, when the outdoor relative humidity is lower than the preset humidity value, the cooling device of the air conditioning system is controlled to be started.

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 air conditioning system with the cooling device is provided, and at least part of the condensing device is arranged opposite to the cooling device, so that the cooling device plays a role in cooling the condensing device, the temperature of at least part of the condensing device is reduced, the condensing temperature of the condensing device is effectively reduced, the heat exchange effect of the condensing device is improved, the heat exchange efficiency of the air conditioning system is ensured, and the energy conservation of the air conditioning system is facilitated.

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; 14. an exhaust port; 20. a condensing unit; 21. a first condenser; 22. a second condenser; 30. a flash device; 40. an evaporation device; 50. a cooling device; 51. a spraying structure; 52. a water pan; 53. a water circulating pump; 54. a return line; 55. a water supply line; 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; 160. a second throttling device; 170. a first 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 heat exchange efficiency of the air conditioning system in the prior art is low.

As shown in fig. 1, the air conditioning system includes a compressor 10, a condensing device 20, an evaporating device 40, and a cooling device 50, wherein the compressor 10 has a first suction port 11, a second suction port 12, and a discharge port 14; the condensing device 20 comprises a first condenser 21 and a second condenser 22 which are arranged in parallel, and an inlet of the first condenser 21 and an inlet of the second condenser 22 are both communicated with the exhaust port 14; the outlet of the evaporation device 40 is communicated with the second air suction port 12, and the outlet of the first condenser 21 and the outlet of the second condenser 22 are both communicated with the inlet of the evaporation device 40; the cooling device 50 is located at one side of the condensing device 20, and the cooling device 50 is used for cooling the condensing device 20.

The application provides an air conditioning system with cooling device 50 to set up condensing equipment 20's at least part and cooling device 50 relatively, like this, cooling device 50 plays the refrigerated effect to condensing equipment 20, thereby reduce condensing equipment 20's at least partial temperature, the condensation temperature of condensing equipment 20 has been reduced effectively, ensure condensing equipment 20's heat transfer effect, thereby guarantee air conditioning system's heat exchange efficiency, be favorable to air conditioning system's energy-conservation.

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 condenser 21 and the second condenser 22 are disposed opposite to each other, the first condenser 21 is disposed on the leeward side, the second condenser 22 is disposed on the windward side, and at least a part of the cooling device 50 is disposed opposite to the heat exchanging portion of the second condenser 22.

As shown in fig. 1, the cooling device 50 includes a shower structure 51, and a shower port of the shower structure 51 is provided opposite to the heat exchanging portion so that the shower liquid sprayed from the shower port falls on the heat exchanging portion. In this way, the spray liquid sprayed by the spraying structure 51 falls on the second condenser 22, and the spray liquid on the surface of the second condenser 22 absorbs heat and evaporates, so as to achieve the cooling purpose of the second condenser 22 in an evaporative cooling manner.

As shown in fig. 1, cooling device 50 further includes a water receiving tray 52, water receiving tray 52 is located below second condenser 22, and water receiving tray 52 is used for collecting spray liquid falling from second condenser 22. In this way, drip tray 52 functions to collect spray falling from second condenser 22, which facilitates the cleanliness of cooling device 50.

In the present application, in order to ensure energy saving performance of the air conditioning system, as shown in fig. 1, the cooling device 50 further includes a return line 54, one end of the return line 54 is communicated with the shower opening, and a second end of the return line 54 is communicated with the water receiving tray 52, so that the shower liquid in the water receiving tray 52 is delivered to the shower opening through the return line 54. In this way, the provision of return line 54 ensures that the spray liquid in drip tray 52 can be reused many times.

As shown in fig. 1, cooling device 50 further includes a water circulation pump 53, where water circulation pump 53 is disposed on return line 54, and water circulation pump 53 is used to deliver the spray liquid in water pan 52 to the spray opening. In this way, the spray liquid in drain pan 52 can be smoothly delivered to the spray opening through return line 54.

It should be noted that, in the present application, in order to avoid the insufficient supply of the spraying liquid in the water receiving tray 52, as shown in fig. 1, the cooling device 50 further includes a water supply pipeline 55, one end of the water supply pipeline 55 is communicated with the external water source 120, and a second end of the water supply pipeline 55 is communicated with the water receiving tray 52, so as to convey the external water source 120 to the spraying port through the water supply pipeline 55. In this way, during operation of the air conditioning system, it is ensured that the cooling device 50 can efficiently cool the second condenser 22, thereby ensuring cooling reliability of the cooling device 50.

In an embodiment, not shown, of the present application, the cooling device 50 includes a spray structure, and a spray outlet of the spray structure is provided opposite to the heat exchanging portion so that the heat exchanging portion is cooled by the mist sprayed from the spray outlet. In this way, the water mist sprayed by the spraying structure is evaporated and cooled, and the cooled air flows through the second condenser 22 to exchange heat.

It should be noted that, in the present application, when the cooling device 50 adopts the spray structure 51, the second condenser 22 is preferably a finned tube condenser to improve the evaporative cooling effect, and the first condenser 21 is preferably a microchannel condenser to reduce the refrigerant charge of the air conditioning system; when the cooling device 50 adopts a spray structure, the first condenser 21 and the second condenser 22 both adopt microchannel condensers, so that the filling amount of the refrigerant of the air conditioning system is further reduced.

As shown in fig. 1, the air conditioning system further includes a flash device 30, the flash device 30 has a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the first condenser 21 and the outlet of the second condenser 22 are both communicated with the refrigerant inlet, so that the refrigerant discharged from the outlet of the first condenser 21 and the refrigerant discharged from the outlet of the second condenser 22 are mixed and enter the flash device 30 from the refrigerant inlet after being throttled by the first throttling device 170, the first refrigerant outlet is communicated with the first air intake 11, the inlet of the evaporation device 40 is communicated with the second refrigerant outlet, and a second throttling device 160 is disposed on a pipeline connecting the inlet of the evaporation device 40 and the second refrigerant outlet. In this way, the flash device 30 performs mechanical supercooling, the refrigerant saturated in the gas state in the flash device 30 is sucked into the first air suction port 11 (air supplement port) of the compressor 10, and the refrigerant saturated in the liquid state separated in the flash device 30 enters the air conditioning indoor unit 80 of the air conditioning system to exchange heat, thereby reducing the inlet specific enthalpy of the evaporation device 40, increasing the cooling capacity per unit mass of the evaporation device 40, and improving the energy efficiency of the air conditioning system.

In the present application, low GWP refrigerants such as R32 and R152a are generally used as refrigerants, and components (piping, valves, etc.) of the air conditioning system should be matched with the refrigerants.

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 control element, and both the photovoltaic power supply device 100 and an external power supply device are electrically connected to the control element, and the control element is used to control the power supply quantity ratio of the photovoltaic power supply device 100; 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.

As shown in fig. 1, the air conditioning system further includes a ventilation device 70, the ventilation device 70 is disposed at a communication position between the inside and the outside of the room, the ventilation device 70 includes a blower 71, and an air inlet 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 wet film 721 passing through 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 control method being used for the air conditioning system in the above embodiment, the control method including detecting an outdoor temperature, an indoor temperature, and an outdoor relative humidity; controlling a compressor 10 of the air conditioning system to start according to a temperature difference between an outdoor temperature and an indoor temperature, and controlling a cooling device 50 of the air conditioning system to start according to a humidity difference between an outdoor relative humidity and a preset humidity value; wherein, the starting of the compressor 10 is controlled to obtain the enthalpy value of outdoor air according to the outdoor dry bulb temperature and the outdoor relative humidity, and when the enthalpy value of the outdoor air is higher than the preset air enthalpy value, the compressor 10 is controlled to start.

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.

Air conditioning and condenser water spray modes of the air conditioning system:

when the outdoor relative humidity is lower than the preset humidity value, the cooling device 50 of the air conditioning system is controlled to be started, and the cooling device 50 effectively cools the second condenser 22, so that the energy efficiency of the air conditioning system is improved.

The control method further comprises the steps of detecting the power generation amount of the photovoltaic power supply device 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 indoor unit 80 and an outdoor unit 90 of an air conditioner with a ventilation device 70, a cooling device 50, 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, implement high efficiency energy saving and temperature and humidity control of the air conditioning system, and implement low carbon emission by using a parallel compression refrigeration technology and a low GWP refrigerant, and in addition, since a centrifugal fan is used as a fan 71 in the ventilation device 70, the air conditioning system is advantageous for structural compactness, thereby reducing the size of an air conditioning casing.

The application provides an air conditioning system adopts compound high-efficient air conditioning system to "parallel compression refrigeration cycle" is the core, combines natural energy utilization techniques such as evaporative cooling, photovoltaic directly drive, constitutes high-efficient compound air conditioning system. The load is reduced. 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 energy efficiency of the refrigerating unit is improved. When the outdoor has enough dry air energy (t)_dry-t_wet>5 ℃), spraying water on the surface of the outdoor finned tube condenser, and reducing the air inlet temperature through evaporative cooling, thereby reducing the condensation temperature and improving the energy efficiency of the unit. The natural energy is fully utilized, and the energy-saving effect is achieved.

The air conditioning system provided by the application adopts the refrigerating unit of parallel compression refrigeration cycle, reduces the flash dryness and the inlet specific enthalpy value of the evaporator inlet, and improves the heat exchange efficiency and the system energy efficiency.

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 adopts the parallel compression rotor compressor and the coupling evaporative condenser to construct a parallel compression refrigeration cycle, so that the energy-saving and efficient operation of the air conditioner is realized;

the air conditioning system provided by the application takes vapor compression refrigeration as a core, and combines ventilation, evaporative cooling 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, cooling device 50, first condenser 21 and second condenser 22, etc.

The cooling device 50 includes: the spray structure 51 or spray structure, drip tray 52, return line 54, circulating water pump 53, water supply line 55, storage tank, etc., or the storage tank and circulating water pump 53 may be omitted when the city water pressure is sufficient or the water supply is high.

The cooling device 50 can adopt a spraying structure 51 or a spraying structure and is combined with a water receiving disc 52, a return pipeline 54, a water supply pipeline 55 and a circulating water pump 53; when the spraying structure 51 is adopted, water directly flows to the fins and the heat exchange tubes of the second condenser 22 for evaporation through the water distributor (if any) from the upper part or the front part of the second condenser 22, and water which is not evaporated flows to the water receiving tray 52 to enter the water storage tank and is pumped to the upper part or the front part of the heat exchanger by the circulating water pump 53 for circulation again; if the spraying device is used, water is sprayed into the air to be evaporated and cooled, and the cooled air flows through the heat exchanger to exchange heat.

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.

The humidifying structure 72 comprises 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 humidification realizes the isenthalpic cooling by placing the wet film 721 at the fresh air inlet position, and under the condition of meeting the indoor requirement, the indoor sensible heat load is reduced, the refrigeration unit is prevented from being started for a long time, and the energy consumption of the air conditioning system is favorably reduced.

Specifically, the high-temperature and high-pressure refrigerant gas discharged from the discharge port 14 of the compressor 10 enters the first condenser 21 and the second condenser 22, respectively, to be condensed; the refrigerant liquid from the second condenser 22 is throttled and pressure-regulated by a capillary tube and then joins the refrigerant at the outlet of the first condenser 21, and the joined supercooled refrigerant is changed into a gas-liquid two-phase state by the first throttling device and enters the flash device 30 to be subjected to 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 enters the evaporator through the second throttling device, is evaporated into saturated or overflowed gas through heat exchange, and is sucked by a second suction port 12 of the compressor 10.

The water supply line 55 supplies city water to a fan 71 of the ventilating device 70 and the outdoor cooling device 50. And respectively carrying out humidification treatment by adopting a spraying mode.

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

1. An air conditioning system, comprising:

a compressor (10), the compressor (10) having a first suction port (11), a second suction port (12), and a discharge port (14);

the condensing device (20) comprises a first condenser (21) and a second condenser (22) which are arranged in parallel, and an inlet of the first condenser (21) and an inlet of the second condenser (22) are communicated with the exhaust port (14);

an outlet of the evaporation device (40) is communicated with the second air suction port (12), and an outlet of the first condenser (21) and an outlet of the second condenser (22) are communicated with an inlet of the evaporation device (40);

a cooling device (50), wherein the cooling device (50) is positioned at one side of the condensing device (20), and the cooling device (50) is used for cooling the condensing device (20).

2. Air conditioning system according to claim 1, characterized in that the first condenser (21) and the second condenser (22) are arranged opposite to each other, and the first condenser (21) is arranged on the lee side and the second condenser (22) is arranged on the windward side, and at least part of the cooling device (50) is arranged opposite to the heat exchanging part of the second condenser (22).

3. Air conditioning system according to claim 2, characterized in that said cooling device (50) comprises:

and the spraying structure (51), a spraying port of the spraying structure (51) is arranged opposite to the heat exchanging part, so that the spraying liquid sprayed from the spraying port falls on the heat exchanging part.

4. Air conditioning system according to claim 3, characterized in that said cooling device (50) further comprises:

the water receiving tray (52) is located below the second condenser (22), and the water receiving tray (52) is used for collecting spraying liquid falling from the second condenser (22).

5. Air conditioning system according to claim 4, characterized in that said cooling device (50) further comprises:

and one end of the return pipeline (54) is communicated with the spraying port, and the second end of the return pipeline (54) is communicated with the water receiving tray (52) so as to convey the spraying liquid in the water receiving tray (52) to the spraying port through the return pipeline (54).

6. Air conditioning system according to claim 5, characterized in that said cooling device (50) further comprises:

and the circulating water pump (53) is arranged on the return pipeline (54), and the circulating water pump (53) is used for conveying the spraying liquid in the water pan (52) to the spraying port.

7. Air conditioning system according to claim 6, characterized in that said cooling device (50) further comprises:

one end of the water supply pipeline (55) is communicated with an external water source (120), and the second end of the water supply pipeline (55) is communicated with the water pan (52) so as to convey the external water source (120) to the spraying port through the water supply pipeline (55).

8. Air conditioning system according to claim 2, characterized in that said cooling device (50) comprises:

and the spraying structure is provided with a spraying opening opposite to the heat exchange part so that the water mist sprayed from the spraying opening cools the heat exchange part.

9. The air conditioning system of claim 1, further comprising:

the flash device (30) is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, the outlet of the first condenser (21) and the outlet of the second condenser (22) are communicated with the refrigerant inlet, so that the refrigerant discharged from the outlet of the first condenser (21) and the refrigerant discharged from the outlet of the second condenser (22) are mixed and enter the flash device (30) through the refrigerant inlet after being subjected to throttling treatment by the first throttling device (170), the first refrigerant outlet is communicated with the first air suction port (11), the inlet of the evaporation device (40) is communicated with the second refrigerant outlet, and a second throttling device (160) is arranged on a pipeline for communicating the inlet of the evaporation device (40) with the second refrigerant outlet.

10. The air conditioning system of claim 9, 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).

11. The air conditioning system of claim 10, further comprising:

the outdoor controller (60) comprises a control element, the photovoltaic power supply device (100) and an external power supply device are electrically connected with the control element, and the control element is used for controlling the power supply quantity proportion of the photovoltaic power supply device (100);

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).

12. The air conditioning system of claim 1, further comprising:

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).

13. The air conditioning system of claim 9, wherein the refrigerant is a low GWP refrigerant.

14. 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 13.

15. A control method of an air conditioning system, the control method being used for the air conditioning system according to any one of claims 1 to 13, characterized by comprising:

detecting an outdoor temperature, an indoor temperature and an outdoor relative humidity;

controlling a compressor (10) of the air conditioning system to start according to the temperature difference between the outdoor temperature and the indoor temperature, and controlling a cooling device (50) of the air conditioning system to start according to the humidity difference between the outdoor relative humidity and a preset humidity value;

wherein controlling the compressor (10) to start comprises:

and obtaining the outdoor air enthalpy value according to the outdoor dry bulb temperature and the outdoor relative humidity, and controlling the compressor (10) to start when the outdoor air enthalpy value is higher than the preset air enthalpy value.

16. The control method of an air conditioning system according to claim 15,

and when the outdoor relative humidity is lower than a preset humidity value, controlling a cooling device (50) of the air conditioning system to start.

17. The control method of an air conditioning system according to claim 15, 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.