WO2022033106A1 - Air conditioning system, air conditioner, and control method for air conditioning system - Google Patents

Abstract

An air conditioning system, an air conditioner, and a control method for an air conditioning system. The air conditioning system comprises a compressor (10), a condensing apparatus (20), a flash apparatus (30), an evaporating apparatus (40) and a ventilating apparatus (70). A first condenser (21) and a second condenser (22) of the condensing apparatus (20) are in communication with an air discharge port (14). The flash apparatus (30) is provided with a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, wherein an outlet of the first condenser (21) and an outlet of the second condenser (22) are in communication with the refrigerant inlet, and the first refrigerant outlet is in communication with a first air suction port. The evaporation apparatus (40) comprises a first evaporator (41) and a second evaporator (42) which are arranged in parallel, wherein an inlet of the first evaporator (41) and an inlet of the second evaporator (42) are in communication with the second refrigerant outlet; an outlet of the first evaporator (41) is in communication with a second air suction port (12); and an outlet of the second evaporator (42) is in communication with a third air suction port (13). The ventilating apparatus (70) comprises a fan (71), an air inlet of the fan (71) being in communication with the outdoors so as to introduce outdoor fresh air indoors.

Description

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

This application claims the priority of the patent application submitted to the State Intellectual Property Office of China on August 14, 2020, the application number is 202010821353.3, and the invention title is "Air Conditioning System and Control Method of Air Conditioning System".

technical field

The present application relates to the technical field of air conditioning equipment, and in particular, to an air conditioning system, an air conditioner, and a control method for the air conditioning system.

Background technique

In the prior art, the air-conditioning system is adjusted to the cooling mode to reduce the temperature of the air in the room. However, the air-conditioning system is in the cooling mode for a long time, resulting in high energy consumption of the air-conditioning system, which is not conducive to the energy-saving of the air-conditioning system. When only controlling the temperature, it often leads to problems such as low humidity and poor human comfort, which reduces the user's favorable impression of the use of the air conditioning system.

SUMMARY OF THE INVENTION

The main purpose of the present application is to provide an air conditioning system, an air conditioner and a control method for the air conditioning system, so as to solve the problem of high energy consumption of the air conditioning system in the prior art.

In order to achieve the above object, according to an aspect of the present application, an air conditioning system is provided, comprising: a compressor, the compressor has a first suction port, a second suction port, a third suction port and an exhaust port; device, the condensing device includes a first condenser and a second condenser arranged in parallel, the inlet of the first condenser and the inlet of the second condenser are both connected with the exhaust port; the flashing device, the flashing device has a refrigerant inlet, The first refrigerant outlet and the second refrigerant outlet, the outlet of the first condenser and the outlet of the second condenser are all communicated with the refrigerant inlet, so that the refrigerant discharged from the outlet of the first condenser and the outlet of the second condenser are connected with each other. The refrigerant discharged from the outlet is mixed and passed through the throttling treatment of the third throttling device, and then enters the flashing device from the refrigerant inlet, and the first refrigerant outlet is communicated with the first suction port; the evaporation device, the evaporation device includes a parallel arrangement of the first evaporation device. The inlet of the first evaporator and the inlet of the second evaporator are both connected with the outlet of the second refrigerant, and a first section is provided on the pipeline connecting the inlet of the first evaporator and the outlet of the second refrigerant. A second throttling device is arranged on the pipeline connecting the inlet of the second evaporator with the outlet of the second refrigerant, the outlet of the first evaporator is communicated with the second suction port, and the outlet of the second evaporator is connected with the third The suction port is connected; the ventilation device includes a fan, and the air inlet of the fan is communicated with the outside, so as to introduce the fresh air from the outside into the room.

Further, the ventilation device further includes: a humidification structure, the humidification structure has a humidification part, and at least part of the humidification part is arranged opposite to the fan to provide moisture to the fresh air introduced by the fan.

Further, the humidification part includes a wet film, the wet film is arranged opposite to the air inlet or the air outlet of the fan, and the humidification structure includes: a first spray structure, and the spray port of the first spray structure is arranged towards the wet film, so as to face the wet film. spray water.

Further, the humidification structure further includes: a first water receiving tray, and the first water receiving tray is located below the wet film to collect the water sprayed by the first spray structure.

Further, the humidification structure further includes: a first water storage tank, the first water storage tank is communicated with the first water receiving tray; a first return line, one end of the first return line is communicated with the spray port of the first spray structure, The second end of the first return line is communicated with the first water storage tank, so as to transport the water in the first water storage tank to the spray port of the first spray structure through the first return line.

Further, the humidification structure further includes: a first circulating water pump, the first circulating water pump is arranged on the first return line, and the first circulating water pump is used for pumping the water in the first water storage tank to the spray port.

Further, the first condenser and the second condenser are arranged opposite to each other, the second condenser is located on the side of the first condenser close to the room, the air conditioning system further includes a cooling device, and the cooling device is opposite to the heat exchange tube of the second condenser. set to cool the heat exchange tubes of the second condenser.

Further, the air-conditioning system further includes: an outdoor controller, the air-conditioning indoor unit of the air-conditioning system, the air-conditioning outdoor unit and the ventilation device of the air-conditioning system are all connected to the outdoor controller, and the outdoor controller is used to control the air-conditioning indoor unit, the air-conditioning outdoor unit and the ventilation device. operating status.

Further, the air conditioning system further includes: a first detection element, the first detection element is arranged indoors, the first detection element is used to detect the outlet air temperature of the wet film passing through the ventilation device, and the first detection element is signally connected to the outdoor controller, So that the outdoor controller controls the air conditioner indoor unit, the air conditioner outdoor unit and the ventilation device according to the outlet air temperature; the second detection element is arranged outdoors, and the second detection element is used to detect the outdoor temperature and outdoor relative humidity, The second detection element is signal-connected with the outdoor controller, so that the outdoor controller controls the air conditioner indoor unit, the air conditioner outdoor unit and the ventilation device according to the outdoor temperature and outdoor relative humidity; the third detection element is arranged indoors, The third detection element is used to detect the indoor temperature, and the third detection element is signal-connected to the outdoor controller, so that the outdoor controller controls the air conditioner indoor unit, the air conditioner outdoor unit and the ventilation device according to the indoor temperature.

Further, the air conditioning system further includes: 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.

Further, both the photovoltaic power supply device and the external power supply device are electrically connected to the outdoor controller, and the outdoor controller is used to control the power supply ratio of the photovoltaic power supply device and the external power supply device; wherein, when the power supply of the photovoltaic power supply device is less than or equal to the preset power , 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.

Further, the refrigerant is a low GWP refrigerant.

According to another aspect of the present application, an air conditioner is provided, the air conditioner includes an air conditioning system, and the air conditioning system is the above air conditioning system.

According to another aspect of the present application, there is provided a control method for an air conditioning system. The control method is used in the above air conditioning system, and the control method includes: detecting indoor temperature, outdoor temperature and outdoor relative humidity; , which controls the action of the ventilation device of the air-conditioning system.

Further, the control method of the air conditioning system further includes: when the outdoor temperature is lower than the indoor temperature, controlling the operation of the fan of the ventilation device; obtaining the outdoor air enthalpy value according to the outdoor dry bulb temperature and the outdoor relative humidity, and when the outdoor temperature is higher than the indoor temperature , and the outdoor air enthalpy value is lower than the preset enthalpy value, control the fan of the ventilation device and the humidification structure of the ventilation device to operate; when the outdoor temperature is higher than the indoor temperature, and the outdoor air enthalpy value is higher than the preset enthalpy value, control the air conditioner The air conditioning indoor unit of the system and the air conditioning outdoor unit of the air conditioning system operate.

Further, the control method of the air-conditioning system further includes: when the outlet air temperature of the wet film passing through the ventilation device is lower than the indoor dry bulb temperature, the fan of the ventilation device and the humidification structure of the ventilation device continue to operate; when the outlet air temperature is higher than the indoor dry bulb temperature; When the temperature is high, the fan of the ventilation device and the humidification structure of the ventilation device stop running, and the air-conditioning indoor unit of the air-conditioning system and the air-conditioning outdoor unit of the air-conditioning system are controlled to run.

Further, the control method of the air conditioning system further includes: when the outdoor relative humidity is lower than the preset humidity value, controlling the operation of the cooling device of the air conditioning system.

The application of the technical solution of the present application provides an air-conditioning system with a ventilation device. When the outdoor temperature is lower than the indoor temperature, the ventilation device is activated to make the fan of the ventilation device operate to introduce fresh air into the room, thereby reducing the indoor temperature. In order to ensure the user's comfort, in the above process, because only the ventilation device is activated, the energy consumption of the air conditioning system is greatly reduced, which is conducive to the energy saving of the air conditioning system, thereby improving the user's favorable impression of the use of the air conditioning system.

Description of drawings

The accompanying drawings that form a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute improper limitations on the present application. In the attached image:

FIG. 1 shows a schematic layout diagram of an air conditioning system according to an optional embodiment of the present application;

FIG. 2 shows a schematic diagram of the distribution of the air-conditioning system in FIG. 1;

FIG. 3 shows a schematic distribution diagram of another viewing angle of the air conditioning system in FIG. 2 .

Wherein, the above-mentioned drawings include the following reference signs:

10, compressor; 11, first suction port; 12, second suction port; 13, third suction port; 14, exhaust port; 20, condensing device; 21, first condenser; 22, first Second condenser; 30, flashing device; 40, evaporation device; 41, first evaporator; 42, second evaporator; 50, cooling device; 51, spray structure; 52, water tray; 53, circulating water pump ; 54, return pipeline; 55, water supply pipeline; 60, outdoor controller; 70, ventilation device; 71, fan; 72, humidification structure; 721, wet film; 722, first spray structure; 723, first Water receiving tray; 80, indoor unit of air conditioner; 90, outdoor unit of air conditioner; 100, photovoltaic power supply device; 110, indoor controller; 120, external water source; 130, external power supply device; 150, first throttling device; 160, first Two throttling devices; 170, a third throttling device.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but 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 application, its application, or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

In order to solve the problem of high energy consumption of the air conditioning system in the prior art, the present application provides an air conditioning system, an air conditioner and a control method for the air conditioning system.

As shown in FIG. 1 , the air conditioning system includes a compressor 10, a condensing device 20, a flashing device 30, an evaporation device 40 and a ventilation device 70, wherein the compressor 10 has a first air inlet 11, a second air inlet 12, The third suction port 13 and the exhaust port 14; the condensing device 20 includes a first condenser 21 and a second condenser 22 arranged in parallel, and the inlet of the first condenser 21 and the inlet of the second condenser 22 are both connected to the exhaust gas. The flashing device 30 has a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, and 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 The refrigerant discharged from the outlet of the condenser 21 and the refrigerant discharged from the outlet of the second condenser 22 are mixed and passed through the throttling treatment of the third throttling device 170, and then enter the flashing device 30 through the refrigerant inlet, and the first refrigerant outlet and The first suction port 11 is in communication; the evaporation device 40 includes a first evaporator 41 and a second evaporator 42 arranged in parallel, and the inlet of the first evaporator 41 and the inlet of the second evaporator 42 are both communicated with the second refrigerant outlet , a first throttling device 150 is arranged on the pipeline connecting the inlet of the first evaporator 41 with the second refrigerant outlet, and a second throttling device 150 is arranged on the pipeline connecting the inlet of the second evaporator 42 with the second refrigerant outlet Device 160, the outlet of the first evaporator 41 is communicated with the second suction port 12, and the outlet of the second evaporator 42 is communicated with the third suction port 13; the ventilation device 70 includes a fan 71, and the air inlet of the fan 71 communicates with the outdoor , to bring the outdoor fresh air into the room.

The present application provides an air conditioning system with a ventilation device 70. When the outdoor temperature is lower than the indoor temperature, the ventilation device 70 is activated, so that the fan 71 of the ventilation device 70 operates to introduce fresh air into the room, thereby reducing the indoor temperature, thereby reducing the indoor temperature. To ensure the user's comfort, in the above process, since only the ventilation device 70 is activated, the energy consumption of the air-conditioning system is greatly reduced, which is beneficial to the energy-saving of the air-conditioning system, thereby improving the user's favorable impression of the use of the air-conditioning system.

As shown in FIG. 1 , arrow A represents the first wind direction, and arrow B represents the second wind direction.

As shown in FIG. 1 , in the embodiment of the present application, the ventilation device 70 further includes a humidification structure 72 , the humidification structure 72 has a humidification part, and at least part of the humidification part is disposed opposite to the fan 71 to provide moisture to the fresh air introduced by the fan 71 . The humidification part includes a wet film 721, the wet film 721 is arranged opposite to the air inlet or outlet of the fan 71, the humidification structure 72 includes a first spray structure 722, and the spray port of the first spray structure 722 is arranged towards the wet film 721, so as to The wet film 721 is sprayed with water. In this way, when the outdoor temperature is higher than the indoor temperature, the outdoor air enthalpy value is obtained according to the outdoor dry bulb temperature and the outdoor relative humidity. When the outdoor air enthalpy value is lower than the preset enthalpy value, the fan 71 of the ventilation device 70 and the humidification structure 72 At this time, the outlet air temperature of the fan 71 of the ventilation device 70 is detected. When the outlet air temperature is lower than the indoor dry bulb temperature, the fan 71 and the humidification structure 72 of the ventilation device 70 continue to operate; when the outlet air temperature is higher than the indoor dry bulb temperature When the temperature is high, the fan 71 of the ventilation device 70 and the humidification structure 72 are both stopped, and at the same time, the compressor 10 of the air-conditioning system is started, the air-conditioning indoor unit 80 and the air-conditioning outdoor unit 90 are operated, and the indoor load is reduced by cooling the air-conditioning indoor unit 80 and supplying air. .

As shown in FIG. 1 , the humidification 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 collect the water sprayed by the first spray structure 722 . In this way, the first water receiving tray 723 plays a role of collecting the water sprayed by the first spray structure 722, so as to prevent the water sprayed by the first spray structure 722 from flowing indoors or outdoors.

It should be noted that, in an unillustrated embodiment of the present application, the humidification structure 72 further includes a first water storage tank and a first return line, wherein the first water storage tank is communicated with the first water receiving tray 723; One end of a return line is communicated with the spray port of the first spray structure 722, and the second end of the first return line is communicated with the first water storage tank, so as to pass the water in the first water storage tank through the first return line It is delivered to the spray port of the first spray structure 722 . In this way, it is ensured that the water in the first water storage tank can be reused for many times, which is beneficial to the energy saving of the air conditioning system.

It should be noted that, in an unillustrated embodiment of the present application, the humidification structure 72 further includes a first circulating water pump, the first circulating water pump is arranged on the first return line, and the first circulating water pump is used to pump the first storage The water in the tank is pumped to the sprinkler. In this way, the first circulating water pump plays the role of pumping the water in the first water storage tank, ensuring that the water in the first water storage tank can smoothly flow through the first return line and reach the position of the spray port.

As shown in FIG. 1 , the first condenser 21 and the second condenser 22 are disposed opposite to each other, and the second condenser 22 is located on the side of the first condenser 21 close to the room. The air conditioning system further includes a cooling device 50 , which is connected to The heat exchange tubes of the second condenser 22 are disposed opposite to each other, so as to perform cooling treatment on the heat exchange tubes of the second condenser 22 . In this way, the cooling device 50 plays a role in cooling the second condenser 22, thereby reducing the condensation temperature of the second condenser 22, ensuring the heat exchange effect of the second condenser 22, and further improving the heat exchange efficiency of the air conditioning system. Conducive to the energy saving of the air conditioning system.

As shown in FIG. 1 , the cooling device 50 includes a spray structure 51 , and the spray port of the spray structure 51 is disposed opposite to the heat exchange pipe, so that the spray liquid sprayed from the spray port falls on the heat exchange pipe. In this way, the spray liquid sprayed by the spray structure 51 falls on the second condenser 22, and the spray liquid on the surface of the second condenser 22 absorbs heat and evaporates, and achieves the cooling effect of the second condenser by evaporative cooling. 22 for cooling purposes.

As shown in FIG. 1 , the cooling device 50 further includes a water receiving tray 52 , the water receiving tray 52 is located below the second condenser 22 , and the water receiving tray 52 is used to collect the spray liquid falling from the second condenser 22 . In this way, the water receiving tray 52 plays a role of collecting the spray liquid falling from the second condenser 22 , which is beneficial to improve the cleanliness of the cooling device 50 .

It should be noted that, in the present application, in order to ensure the energy saving 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 spray port, and the return line 54 The second end of the water-receiving pan 52 is communicated with the water-receiving pan 52, so that the spray liquid in the water-receiving pan 52 is transported to the spray port through the return line 54. In this way, the arrangement of the return line 54 ensures that the spray liquid in the water receiving tray 52 can be reused for many times.

As shown in FIG. 1 , the cooling device 50 further includes a circulating water pump 53 . The circulating water pump 53 is arranged on the return line 54 , and the circulating water pump 53 is used to transport the spray liquid in the water receiving tray 52 to the spray port. In this way, it is ensured that the spray liquid in the water receiving tray 52 can be smoothly transported to the spray port through the return line 54 .

It should be noted that, in the present application, in order to avoid insufficient supply of the spray liquid in the water receiving tray 52, as shown in FIG. 120 is connected, and the second end of the water supply pipeline 55 is connected to the water receiving tray 52 , so that the external water source 120 is transported to the spray port through the water supply pipeline 55 . In this way, during the operation of the air conditioning system, it is ensured that the cooling device 50 can effectively cool the second condenser 22, thereby ensuring the cooling reliability of the cooling device 50.

It should be noted that, in an embodiment not shown in the present application, the cooling device 50 includes a spray structure, and the spray port of the spray structure is arranged opposite to the heat exchange tube, so that the water mist sprayed from the spray port is opposite to the heat exchange tube. Cool down. In this way, the water mist sprayed by the spray structure is evaporated and cooled, and the cooled air flows through the second condenser 22 for heat exchange.

It should be noted that, in this 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 micro-channel condenser, In order to reduce the charging amount of the air conditioning system; when the cooling device 50 adopts the spray structure, the first condenser 21 and the second condenser 22 are both micro-channel condensers, which further reduces the charging amount of the air conditioning system.

As shown in FIG. 2 and FIG. 3 , the air-conditioning system further includes an outdoor controller 60. The air-conditioning indoor unit 80 of the air-conditioning system, the air-conditioning outdoor unit 90 of the air-conditioning system, and the ventilation device 70 are all connected to the outdoor controller 60. The outdoor controller 60 uses It is used to control the operation status of the air conditioner indoor unit 80 , the air conditioner outdoor unit 90 and the ventilation device 70 .

It should be noted that, in this application, the air conditioning system further includes a first detection element, a second detection element and a third detection element, wherein the first detection element is arranged indoors, and the first detection element is used to detect the passage of the ventilation device 70 The first detection element is connected to the outdoor controller 60 in signal, so that the outdoor controller 60 controls the air conditioner indoor unit 80, the air conditioner outdoor unit 90 and the ventilation device 70 according to the outlet air temperature; the second The detection element is arranged outdoors, the second detection element is used to detect the outdoor temperature and the outdoor relative humidity, and the second detection element is connected with the outdoor controller 60 in signal, so that the outdoor controller 60 can detect the indoor unit 80 of the air conditioner according to the outdoor temperature and the outdoor relative humidity. , the air conditioner outdoor unit 90 and the ventilation device 70 are controlled; the third detection element is arranged indoors, the third detection element is used to detect the indoor temperature, and the third detection element is signally connected to the outdoor controller 60, so that the outdoor controller 60 can be controlled according to the indoor temperature. The temperature is controlled for the air conditioner indoor unit 80 , the air conditioner outdoor unit 90 , and the ventilation device 70 . In this way, it is ensured that the air-conditioning system can operate in an energy-efficient manner.

As shown in FIG. 1 , the air conditioning system further includes a photovoltaic power supply device 100 , the photovoltaic power supply device 100 is arranged 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 it into direct current electric energy to supply power to the compressor 10 , which makes full use of natural resources and is beneficial to the energy saving of the air conditioning system.

Optionally, both the photovoltaic power supply device 100 and the external power supply device 130 are electrically connected to the outdoor controller 60, and the outdoor controller 60 is used to control the power supply ratio of the photovoltaic power supply device 100 and the external power supply device 130; When the power supply is less than or equal to the preset power, the outdoor controller 60 controls the external power supply device 130 to be electrically connected to 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 .

Optionally, the photovoltaic power supply device 100 includes a high-efficiency photovoltaic panel, a battery, an inverter, and the like.

It should be noted that, in this application, in order to ensure the normal operation of the air conditioning system, optionally, when the power supply of the photovoltaic power supply device 100 is insufficient, the external power supply device 130 may also be used to supply power to the compressor 10 at the same time.

It should be noted that, in this application, the refrigerants are usually low-GWP refrigerants such as R32 and R152a, and the components (pipes, valves, etc.) of the air-conditioning system should be matched with them.

The air conditioning system in the above embodiment can also be used in an air conditioner, 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 application, there is provided a control method for an air-conditioning system, the control method is used to control the air-conditioning system in the above embodiment, and the control method includes detecting indoor temperature, outdoor temperature and outdoor relative humidity; The temperature difference controls the operation of the ventilation device 70 of the air conditioning system.

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 fan 71 that controls the ventilation device 70 operates. In this way, when the outdoor temperature is lower than the indoor temperature, the fan 71 of the ventilation device 70 operates at a high speed to introduce the outdoor low temperature air into the room, thereby achieving the purpose of reducing the indoor temperature.

Ventilation and humidification mode of the ventilation unit 70 of the air conditioning system:

When the outdoor temperature is higher than the indoor temperature, and the outdoor air enthalpy value is lower than the preset enthalpy value, the fan 71 of the ventilation device 70 and the humidification structure 72 of the ventilation device 70 are controlled to operate. In this way, when the outdoor temperature is higher than the indoor temperature, the outdoor air enthalpy value is obtained according to the outdoor dry bulb temperature and the outdoor relative humidity. When the outdoor air enthalpy value is lower than the preset enthalpy value, the fan 71 of the ventilation device 70 and the humidification structure 72 At this time, the outlet air temperature of the wet film 721 passing through the ventilation device 70 is detected. When the outlet air temperature is lower than the indoor dry bulb temperature, the fan 71 and the humidification structure 72 of the ventilation device 70 continue to operate.

The air conditioning system is converted from the ventilation and humidification mode of the ventilation unit 70 to the pure air conditioning mode of the air conditioning system:

When the temperature of the air passing through the wet film 721 of the ventilation device 70 is higher than the indoor temperature, both the fan 71 and the humidification structure 72 of the ventilation device 70 stop running. The unit 90 is operated, and the indoor load is reduced by cooling the air conditioner indoor unit 80 and supplying air.

Pure air conditioning mode of the air conditioning system:

When the outdoor temperature is higher than the indoor temperature, and the outdoor air enthalpy value is higher than the preset enthalpy value, the air conditioner indoor unit 80 and the air conditioner outdoor unit 90 of the air conditioner system are controlled to operate. In this way, the indoor load is reduced by cooling and blowing the air by the air-conditioning indoor unit 80 .

Air conditioning mode and condenser water spraying mode of 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 operate. In this way, the cooling device 50 effectively cools the second condenser 22, which is beneficial to improve the energy efficiency of the air conditioning system.

It should be noted that, in this application, a composite high-efficiency air-conditioning system is used, with "parallel coupled cascaded suction compression refrigeration cycle" as the core, combined with evaporative cooling, photovoltaic direct drive and other natural energy utilization technologies to build a high-efficiency composite air-conditioning system. The air conditioning system provided by the present application can reduce the load of the refrigeration unit. Mechanical ventilation directly utilizes the temperature difference and humidity difference to save energy; mechanical ventilation and humidification achieve isoenthalpy cooling by placing a wet film behind the fresh air, reducing the indoor sensible heat load while meeting indoor requirements. The air conditioning system provided by the present application can improve the energy efficiency of the refrigeration unit. When there is sufficient dry air energy outside (t _dry -t _wet >5°C, where t _dry is the dry bulb temperature of the air, and t _wet is the wet bulb temperature of the air), sprinkle water on the surface of the outdoor finned tube condenser, Through evaporative cooling, the inlet air temperature is reduced, thereby reducing the condensing temperature and improving the energy efficiency of the unit. The air conditioning system provided by the present application makes full use of natural energy to achieve the effect of energy saving.

It should be noted that, in the present application, a refrigeration unit with "parallel coupled cascaded suction compression refrigeration cycle" is adopted, which significantly improves the unit's ability to handle heat and humidity loads and improves the unit's energy efficiency. The double evaporator system with cascade heat exchange is adopted in the room, which handles sensible heat and latent heat loads in stages. Reduce the irreversible loss of the heat transfer process of the evaporator and improve the heat exchange efficiency of the multi-row heat exchanger; a new type of compressor with "double suction parallel compression" is used outdoors. Through parallel compression, the flash dryness at the inlet of the evaporator can be reduced, further Improve heat exchange efficiency and system energy efficiency; at the same time, the cascaded suction parallel compression cycle can achieve high-efficiency operation in a wide range of operating conditions.

It should be noted that, in this application, the photovoltaic direct drive technology can be used to adjust the power supply ratio of mains and solar energy in real time according to the power required for the operation of the air conditioner and the photovoltaic power generation through multi-power management coordinated control, energy complementation and smooth switching technology. , to achieve efficient use of solar energy.

It should be noted that, in this application, a double-suction parallel compression rotor compressor, a cascade heat exchange evaporator and a coupled evaporative condenser are used to construct a parallel coupled cascaded suction compression refrigeration cycle, which realizes the independent control of temperature and humidity. Energy-saving and efficient operation under wide working conditions; with vapor compression refrigeration as the core, combined with ventilation, evaporative cooling, and solar energy utilization technologies, a composite refrigeration household air-conditioning system is created; the air-conditioning system uses low GWP environmentally friendly refrigerants, which can be R32, R152a, etc.

The air-conditioning system provided by the present application includes: an air-conditioning indoor unit 80, an air-conditioning outdoor unit 90, a ventilation device 70, a photovoltaic power supply device 100, a mechanical ventilation device, an indoor controller 110, an outdoor controller 60 and other components.

The air conditioner outdoor unit 90 includes a compressor 10, a cooling device 50, a first condenser 21, a second condenser 22, and the like.

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

The cooling device 50 can adopt the spray structure 51 or the spray structure, and combine the water receiving pan 52, the return line 54, the water supply line 55 and the circulating water pump 53; Above or in front, through the water distributor (if any), it directly flows to the fins and heat exchange tubes of the second condenser 22 for evaporation. One pump to the top or front of the heat exchanger for circulation; if a spray device is used, the water is sprayed into the air for evaporation and cooling, and the cooled air flows through the heat exchanger for heat exchange.

The refrigeration unit adopts a first condenser 21 and a second condenser 22, the second condenser 22 is located on the windward side, and the first condenser 21 is located on the leeward side. When the spray structure 51 is used, the second condenser 22 is preferably a fin-tube heat exchanger to improve the evaporative cooling effect, and the first condenser 21 is selected as a micro-channel heat exchanger to reduce the system filling capacity; when using a spray device , can choose micro-channel heat exchanger to further reduce the system filling capacity.

The refrigeration unit adopts the first evaporator 41 and the second evaporator 42, wherein the high temperature evaporator mainly handles the indoor sensible heat load, and the low temperature evaporator mainly handles the indoor latent heat load, and the two sets of heat exchangers are arranged in parallel. The air to be treated is first cooled by a high temperature evaporator, and then dehumidified (also cooled) by a low temperature evaporator, and then sent to the room after reaching the air supply conditions. In order to achieve the purpose of independent control of temperature and humidity.

Specifically, the first evaporator 41 is a high temperature evaporator to ensure that the first evaporator 41 can handle the indoor sensible heat load, and the second evaporator 42 is a low temperature evaporator to ensure that the second evaporator 42 can handle the indoor latent heat load, Thus, the indoor air can be cooled in steps, thereby improving the air conditioning system's ability to handle heat and humidity loads, reducing irreversible heat loss during the heat transfer process of the evaporating device 40, and helping to improve the heat exchange efficiency of the air conditioning system.

It should be noted that, in this application, the compressor 10 used in the refrigeration unit is a new type of rotary compressor with "double suction parallel compression". The compressor 10 provided in this application has three independent compression cylinders, and the compressor 10 includes The first suction port 11, the second suction port 12, the third suction port 13 and the exhaust port 14, combined with the dual-temperature evaporation device 40 and the flashing device 30 in the middle, form a parallel coupled stepped suction compression refrigeration cycle, The gas of the first suction port 11 comes from the intermediate supplementary gas. The setting of the compression cylinder can reduce the flash dryness of the two evaporator inlets, improve the heat exchange efficiency of the evaporator and the energy efficiency of the system, especially when the temperature difference between indoor and outdoor is relatively high. When the load of the refrigeration unit is large or the load of the refrigeration unit is large, the efficiency is significantly improved; the gas of the second suction port 12 and the third suction port 13 comes from the first evaporator 41 and the second evaporator 42 respectively, and the setting of the two compression cylinders can achieve high temperature Heat exchange with low-temperature evaporation, thereby realizing the stepwise cooling of the air, reducing the irreversible loss of the heat exchange process, and improving the heat exchange efficiency of the evaporation device 40 and the energy efficiency of the system, especially when the indoor and outdoor temperature difference is small or the refrigeration unit load is small. Therefore, the parallel coupling cascaded suction compression refrigeration cycle formed by the three compression cylinders can realize the coupling and improve the energy efficiency of the system in a wide range.

Specifically, the high-temperature and high-pressure refrigerant gas discharged from the exhaust port 14 of the compressor 10 enters the first condenser 21 and the second condenser 22 for condensation respectively; the refrigerant liquid from the second condenser 22 is throttled through the capillary tube After the pressure adjustment, it is combined with the refrigerant at the outlet of the first condenser 21, and the combined subcooled refrigerant passes through the third throttling device 170 into a gas-liquid two-phase state and enters the flashing device 30 for gas-liquid separation. The gas-phase refrigerant in the flashing device 30 enters the first suction port 11 of the compressor 10; the liquid-phase refrigerant is divided into two paths, one of which enters the first evaporator 41 through the first throttling device 150 and evaporates into saturated or The superheated gas is inhaled by the second suction port 12 of the compressor 10 , and the other path enters the second evaporator 42 through the second throttling device 160 and is evaporated into saturated or superheated gas by the third suction port 13 of the compressor 10 . inhaled.

The mechanical ventilation device includes a ventilation device 70, and the ventilation device 70 includes components such as a fan 71 and a humidification structure 72, and the fan 71 is a centrifugal fan.

The humidification structure 72 includes a wet film 721, a first spray structure 722, a first water receiving tray 723, a water pump and other components; or, the humidification structure 72 may adopt a humidification form such as ultrasonic waves. In the mechanical ventilation method, the water pressure of the tap water is directly sprayed to the wet film 721, and the fan blades of the centrifugal fan are rotated to realize the humidification and cooling of the fresh air, so as to avoid additional power consumption; 721 to achieve iso-enthalpy cooling. In the case of meeting indoor requirements, it can reduce the indoor sensible heat load and avoid turning on the refrigeration unit for a long time, which is conducive to reducing the energy consumption of the air conditioning system; at the same time, the introduction of outdoor fresh air can improve the indoor air quality and enhance the user experience.

The water supply line 55 sends city water to the fan 71 of the ventilation unit 70 and the cooling unit 50 outdoors. The humidification treatment is carried out separately by spraying.

The outdoor controller adjusts the operation of each component according to the different parameters of the room.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

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, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that 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 the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, acts, devices, components, and/or combinations thereof.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (17)

1. An air conditioning system, comprising:

   a compressor (10), the compressor (10) having a first suction port (11), a second suction port (12), a third suction port (13) and an exhaust port (14);

   A condensing device (20), the condensing device (20) comprising a first condenser (21) and a second condenser (22) arranged in parallel, an inlet of the first condenser (21) and the second condenser The inlets of the device (22) are all communicated with the exhaust port (14);

   A flashing device (30), the flashing device (30) has a refrigerant inlet, a first refrigerant outlet and a second refrigerant outlet, an outlet of the first condenser (21) and the second condenser (22) The outlets of the condenser are all 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 passed through the third condenser (22). After the throttling process of the throttling device (170), the refrigerant inlet enters the flashing device (30), and the first refrigerant outlet communicates with the first air inlet (11);

   An evaporation device (40), the evaporation device (40) comprising a first evaporator (41) and a second evaporator (42) arranged in parallel, an inlet of the first evaporator (41) and the second evaporator The inlets of the evaporator (42) are all communicated with the second refrigerant outlet, and a first throttling device (150) is provided on the pipeline connecting the inlet of the first evaporator (41) with the second refrigerant outlet. , a second throttling device (160) is provided on the pipeline connecting the inlet of the second evaporator (42) with the outlet of the second refrigerant, and the outlet of the first evaporator (41) is connected to the outlet of the first evaporator (41). The two suction ports (12) are communicated, and the outlet of the second evaporator (42) is communicated with the third suction port (13);

   A ventilation device (70), the ventilation device (70) includes a fan (71), and the air inlet of the fan (71) is communicated with the outdoors, so as to introduce outdoor fresh air into the room.
2. The air-conditioning system according to claim 1, wherein the ventilation device (70) further comprises:

   A humidification structure (72), the humidification structure (72) has a humidification part, and at least part of the humidification part is arranged opposite to the fan (71) to provide moisture to the fresh air introduced by the fan (71).
3. The air-conditioning system according to claim 2, characterized in that the humidifying part comprises a wet film (721), the wet film (721) is disposed opposite to the air inlet or the air outlet of the fan (71), and the The humidification structure (72) includes:

   A first spray structure (722), the spray port of the first spray structure (722) is disposed toward the wet film (721) to spray water to the wet film (721).
4. The air conditioning system according to claim 3, wherein the humidification structure (72) further comprises:

   A first water receiving tray (723), the first water receiving tray (723) is located below the wet film (721) to collect the water sprayed by the first spray structure (722).
5. The air conditioning system according to claim 4, wherein the humidification structure (72) further comprises:

   a first water storage tank, the first water storage tank is communicated with the first water receiving tray (723);

   A first return line, one end of the first return line is communicated with the spray port of the first spray structure (722), and the second end of the first return line is connected with the first water storage tank connected, so as to transport the water in the first water storage tank to the spray port of the first spray structure (722) through the first return line.
6. The air conditioning system according to claim 5, wherein the humidification structure (72) further comprises:

   A first circulating water pump, the first circulating water pump is arranged on the first return line, and the first circulating water pump is used for pumping the water in the first water storage tank to the spray port.
7. The air conditioning system according to claim 6, characterized in that the first condenser (21) and the second condenser (22) are disposed opposite to each other, and the second condenser (22) is located at the first condenser (22) On the side of the condenser (21) close to the room, the air conditioning system further includes a cooling device (50), and the cooling device (50) is arranged opposite to the heat exchange tube of the second condenser (22), so as to The heat exchange tubes of the second condenser (22) are cooled.
8. The air conditioning system according to claim 7, wherein the air conditioning system further comprises:

   An outdoor controller (60), an air conditioner indoor unit (80) of the air conditioning system, an air conditioner outdoor unit (90) of the air conditioning system, and the ventilation device (70) are all connected to the outdoor controller (60), The outdoor controller (60) is used for controlling the operation status of the air conditioner indoor unit (80), the air conditioner outdoor unit (90) and the ventilation device (70).
9. The air conditioning system according to claim 8, wherein the air conditioning system further comprises:

   A first detection element, the first detection element is arranged indoors, the first detection element is used for detecting the outlet air temperature of the wet film (721) passing through the ventilation device (70), and the first detection element is connected to The outdoor controller (60) is signal-connected, so that the outdoor controller (60) controls the air conditioner indoor unit (80), the air conditioner outdoor unit (90) and the ventilation device according to the outlet air temperature (70) to control;

   A second detection element, the second detection element is arranged outdoors, the second detection element is used to detect the outdoor temperature and the outdoor relative humidity, and the second detection element is signal-connected to the outdoor controller (60) to causing the outdoor controller (60) to control the air conditioner indoor unit (80), the air conditioner outdoor unit (90) and the ventilation device (70) according to the outdoor temperature and the outdoor relative humidity;

   A third detection element, the third detection element is arranged indoors, the third detection element is used to detect the indoor temperature, and the third detection element is signal-connected to the outdoor controller (60), so that the outdoor A controller (60) controls the air conditioner indoor unit (80), the air conditioner outdoor unit (90), and the ventilation device (70) according to the indoor temperature.
10. The air conditioning system according to claim 9, wherein the air conditioning system further comprises:

    A photovoltaic power supply device (100), the photovoltaic power supply device (100) is arranged outdoors, and the photovoltaic power supply device (100) is electrically connected with the compressor (10) to supply power to the compressor (10).
11. The air conditioning system of claim 10, wherein:

    Both the photovoltaic power supply device (100) and the external power supply device (130) are electrically connected to the outdoor controller (60), and the outdoor controller (60) is configured to control the photovoltaic power supply device (100) and the outdoor power supply device (100) and the outdoor controller (60). the power supply ratio of the external power supply device (130);

    Wherein, when the power supply amount of the photovoltaic power supply device (100) is less than or equal to a preset amount of electricity, the outdoor controller (60) controls the external power supply device (130) to be electrically connected to 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 according to claim 1, wherein the refrigerant is a low GWP refrigerant.
13. An air conditioner, comprising an air conditioner system, characterized in that, the air conditioner system is the air conditioner system according to any one of claims 1 to 12.
14. A control method for an air conditioning system, the control method being used in the air conditioning system according to any one of claims 1 to 12, wherein the control method comprises:

    Detect indoor temperature, outdoor temperature and outdoor relative humidity;

    The operation of the ventilation device (70) of the air-conditioning system is controlled according to the temperature difference between the outdoor temperature and the indoor temperature.
15. The control method of an air-conditioning system according to claim 14, wherein the control method of the air-conditioning system further comprises:

    When the outdoor temperature is lower than the indoor temperature, controlling the fan (71) of the ventilation device (70) to operate;

    The outdoor air enthalpy value is obtained according to the outdoor dry bulb temperature and the outdoor relative humidity, and when the outdoor temperature is higher than the indoor temperature and the outdoor air enthalpy value is lower than the preset enthalpy value, control the ventilation device (70) The fan (71) and the humidification structure (72) of the ventilation device (70) operate;

    When the outdoor temperature is higher than the indoor temperature and the outdoor air enthalpy value is higher than the preset enthalpy value, control the air conditioner indoor unit (80) of the air conditioner system and the air conditioner outdoor unit of the air conditioner system (90) RUN.
16. The control method of an air conditioning system according to claim 15, wherein the control method of the air conditioning system further comprises:

    When the outlet air temperature passing through the wet film (721) of the ventilation device (70) is lower than the indoor dry bulb temperature, the fan (71) of the ventilation device (70) and the humidification structure of the ventilation device (70) (72) Continuous operation;

    When the outlet air temperature is higher than the indoor temperature, the fan (71) of the ventilation device (70) and the humidification structure (72) of the ventilation device (70) stop running, and the air-conditioning indoor unit of the air-conditioning system is controlled. (80) and the air-conditioning outdoor unit (90) of the air-conditioning system operate.
17. The control method of an air-conditioning system according to claim 16, wherein the control method of the air-conditioning system further comprises:

    When the outdoor relative humidity is lower than a preset humidity value, the cooling device (50) of the air conditioning system is controlled to operate.

Images