CN111998437B - Temperature and humidity independent control air conditioning system with fresh air - Google Patents
Temperature and humidity independent control air conditioning system with fresh air Download PDFInfo
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- CN111998437B CN111998437B CN202010935983.3A CN202010935983A CN111998437B CN 111998437 B CN111998437 B CN 111998437B CN 202010935983 A CN202010935983 A CN 202010935983A CN 111998437 B CN111998437 B CN 111998437B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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Abstract
The invention discloses a fresh air adding temperature and humidity independent control air conditioning system which comprises an outdoor unit system and an indoor unit system, wherein the outdoor unit system is positioned on the outdoor side, and the indoor unit system is positioned on the user side; the outdoor unit system comprises a solution regeneration device and a fresh air solution cooling and dehumidifying device which are communicated up and down; a refrigerating circulation system is further arranged in the outdoor unit system and the indoor unit system, and a solution circulation pipeline communicated with the fresh air solution cooling and dehumidifying device is arranged between the solution regenerating device and the fresh air solution cooling and dehumidifying device; set up new trend solution cooling dehydrating unit and solution regenerating unit through the off-premises station system to be equipped with the solution circulation pipeline of intercommunication, make and utilize solution to dehumidify the new trend and make solution regeneration, through refrigerating cycle system, control outdoor new trend solution cooling dehumidification and indoor return air cooling etc. reach humiture independent control, satisfy the change of indoor heat and humidity load, introduce the new amount of wind and improved the indoor air quality, eliminated the problem of indoor side humidity ponding.
Description
Technical Field
The invention relates to a household split air conditioner, in particular to a fresh air adding temperature and humidity independent control air conditioning system.
Background
The indoor temperature and humidity control is the main task of an air conditioning system, and at present, common split air conditioners are all indoor return air subjected to cooling and dehumidifying treatment and complete the temperature and humidity control task by means of heat and humidity exchange with indoor air. However, the control of temperature and humidity dual parameters is difficult to realize by single parameter air supply, and the requirement of constantly changing heat-humidity ratio is difficult to meet. In a general split type air conditioner, the humidity is treated by using a lower evaporation temperature, and the temperature is controlled without a too low cold source, so that the waste of energy utilization is caused. In the cooling and dehumidifying process of the indoor unit of the currently common split air conditioner, the problems of humidity, condensate water accumulation and easy mildew breeding generally exist on the surface of the super-cooled heat exchanger. Conventional split-type air conditioners also lack fresh air to remove indoor air pollutants and respiratory waste gases from personnel.
At present, the traditional split air conditioner has become the mainstream of the household air conditioner, but the split air conditioner mainly has the following four defects: firstly, in order to meet the humidity requirement, excessive refrigeration performed by an air conditioner to remove the humidity load can cause waste on energy utilization; secondly, the air treatment of heat and humidity coupling is difficult to meet the indoor heat and humidity change, and the heat comfort is difficult to ensure; third, lack of the new trend system, can't guarantee the indoor air quality; and fourthly, moisture is accumulated easily due to dehumidification in the indoor unit, and mold is easy to breed.
The solution dehumidification is used for replacing the traditional cooling dehumidification to improve the evaporation temperature of the system and reduce the energy consumption, and is applied to central air conditioners at present. The CN106766355A invention discloses an air conditioning system with independent temperature and humidity control, which comprises an absorption-compression combined type refrigeration system and a solution dehumidification system, and respectively bears sensible heat load and latent heat load of air, but the absorption type refrigeration system disclosed by the invention is relatively large in equipment, relatively low in overall efficiency, limited in temperature and humidity processing load, general in applicability and incapable of meeting the requirements of people on indoor air quality.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art, provides a fresh air adding temperature and humidity independent control air conditioning system which is suitable for split air conditioners of families and small public buildings, and has the advantages of compact structural design, simplicity in installation and capability of eliminating indoor accumulated water. Indoor temperature and humidity parameters and fresh air volume are controlled by controlling the rotating speed of the variable frequency compressor and the rotating speed of the fan. The invention shares the solution dehumidification regeneration system and the indoor air conditioning heat pump system with one vapor compression type refrigeration cycle unit, thereby improving the utilization rate of energy.
In order to achieve the purpose, the invention adopts the following technical scheme: the outdoor unit system is communicated with the indoor unit system through a fresh air pipe and a refrigerant pipe; the outdoor unit system comprises a shell; a solution regeneration channel and a fresh air solution cooling and dehumidifying channel with openings at two ends are arranged in the shell, a solution regeneration device is arranged in the solution regeneration channel, a fresh air solution cooling and dehumidifying device is arranged in the fresh air solution cooling and dehumidifying channel, and the solution regeneration device is communicated with the fresh air solution cooling and dehumidifying device up and down; a refrigeration cycle system is further arranged in the outdoor unit system and the indoor unit system, and comprises a compressor, a first heat exchange device and a second heat exchange device which are arranged in the outdoor unit system; the refrigeration cycle system also comprises a third heat exchange device arranged in the indoor unit system; the second heat exchange device is arranged between the solution regeneration device and the fresh air solution cooling and dehumidifying device; a solution circulating pipeline communicated with the fresh air solution cooling and dehumidifying device is arranged between the solution regenerating device and the fresh air solution cooling and dehumidifying device; one end of the solution circulating pipeline is communicated with the fresh air solution cooling and dehumidifying device, and the other end of the solution circulating pipeline passes through the second heat exchange device and the first heat exchange device and then is arranged above the solution regenerating device; the other end of the solution circulating pipeline is provided with a plurality of solution nozzles; the upper end part of the fresh air solution cooling and dehumidifying device is provided with a first solution pump; the input end of the first solution pump is connected to the solution regeneration device; the output end of the first solution pump is provided with a plurality of solution spray heads; and a second solution pump is also arranged on the solution circulating pipeline.
Furthermore, the solution regeneration device and the fresh air solution cooling and dehumidifying device are respectively internally provided with a filler, and the filler is used for increasing the contact area of the moisture-heat exchange between the air and the solution; and the inner side of the bottom of the fresh air solution cooling and dehumidifying device is provided with dehumidifying solution.
Further, the first heat exchange device is arranged on one side far away from the air inlet of the solution regeneration device, and the first heat exchange device comprises an air-refrigerant condenser and a solution-refrigerant condenser; the second heat exchange device comprises a solution heat exchanger and a solution-refrigerant evaporator, and the solution heat exchanger is arranged above the solution-refrigerant evaporator.
Furthermore, the refrigeration cycle system also comprises a four-way regulating valve, and the four-way regulating valve is connected with an inlet and an outlet of the compressor; the outlet end of the compressor is connected with the inlet of the air-refrigerant condenser after passing through the four-way regulating valve; the outlet of the air-refrigerant condenser is connected with the inlet of the solution-refrigerant condenser, and the outlet of the solution-refrigerant condenser is connected with the inlet of the first refrigerant distribution regulator; the outlet of the first refrigerant distribution regulator is connected with two throttling valves, and one throttling valve outlet is connected with the inlet of the solution-refrigerant evaporator; and the outlet of the other throttle valve is connected with the inlet of the third heat exchange device in the indoor unit system.
Further, the inlet end of the compressor is connected with a second refrigerant distribution regulator through the four-way regulating valve, and one passage of the second refrigerant distribution regulator is communicated with the outlet of the solution-refrigerant evaporator; and the other passage of the second refrigerant distribution regulator is communicated with an outlet of the third heat exchange device of the indoor unit system.
Furthermore, the indoor unit system comprises an indoor unit, the indoor unit is internally provided with the third heat exchange device, the third heat exchange device is a dry air-refrigerant evaporator, each side surface of the indoor unit is respectively provided with a fresh air inlet, a return air inlet and an indoor air outlet, and the fresh air inlet is communicated with the fresh air solution cooling and dehumidifying channel.
Furthermore, an indoor fan is arranged between the dry air-refrigerant evaporator and the indoor air outlet.
Furthermore, the fresh air solution cooling and dehumidifying channel comprises a fresh air inlet communicated with the fresh air port, and a fresh air fan is arranged at the position, close to the fresh air port, of the fresh air solution cooling and dehumidifying channel; the solution regeneration channel comprises a regeneration air inlet and a regeneration air outlet which are communicated, a centrifugal fan is further arranged in the solution regeneration channel, and the centrifugal fan is located between the first heat exchange device and the regeneration air outlet.
Furthermore, the fresh air inlet and the air inlet of the regeneration air inlet are respectively provided with a filter screen.
Further, the solution is a lithium chloride solution; the refrigerant is R410A.
The invention has the beneficial effects that: the fresh air adding temperature and humidity independent control air conditioning system comprises an outdoor unit system and an indoor unit system, wherein the outdoor unit system is positioned on the outdoor side, the indoor unit system is positioned on the user side, and the outdoor unit system and the indoor unit system are communicated through a fresh air pipe and a refrigerating pipe; the outdoor unit system comprises a shell; a solution regeneration channel and a fresh air solution cooling and dehumidifying channel with openings at two ends are arranged in the shell, a solution regeneration device is arranged in the solution regeneration channel, a fresh air solution cooling and dehumidifying device is arranged in the fresh air solution cooling and dehumidifying channel, and the solution regeneration device is communicated with the fresh air solution cooling and dehumidifying device up and down; a refrigeration cycle system is further arranged in the outdoor unit system and the indoor unit system, and comprises a compressor, a first heat exchange device and a second heat exchange device which are arranged in the outdoor unit system; the refrigeration cycle system also comprises a third heat exchange device arranged in the indoor unit system; the second heat exchange device is arranged between the solution regeneration device and the fresh air solution cooling and dehumidifying device; a solution circulating pipeline communicated with the fresh air solution cooling and dehumidifying device is arranged between the solution regenerating device and the fresh air solution cooling and dehumidifying device; one end of the solution circulating pipeline is communicated with the fresh air solution cooling and dehumidifying device, and the other end of the solution circulating pipeline passes through the second heat exchange device and the first heat exchange device and then is arranged above the solution regenerating device; the other end of the solution circulating pipeline is provided with a plurality of solution nozzles; the upper end part of the fresh air solution cooling and dehumidifying device is provided with a first solution pump; the input end of the first solution pump is connected to the solution regeneration device; the output end of the first solution pump is provided with a plurality of solution spray heads; and a second solution pump is also arranged on the solution circulating pipeline. Set up new trend solution cooling dehydrating unit and solution regenerating unit through the off-premises station system, and be equipped with the solution circulation pipeline of intercommunication, make and utilize solution to dehumidify the new trend and make solution regeneration, through outdoor and indoor refrigeration cycle system, the outdoor new trend of control realizes indoor humiture independent control through solution cooling dehumidification and indoor circulated air cooling, in order to satisfy the change of the indoor constantly changing heat and humidity load, the fresh air volume of introducing has improved the indoor air quality, indoor pollutant has been diluted, dehumidification process puts in the outdoor side simultaneously, the problem of the indoor side humidity or ponding has been eliminated. The invention does not adopt the refrigeration dehumidification of the original split air conditioner, but adopts solution dehumidification. Compared with the traditional refrigeration dehumidification, the solution dehumidification refrigeration cycle can adopt higher evaporation temperature, the performance coefficient of the refrigeration cycle is improved, and the energy consumption is reduced. Compared with the traditional split air conditioner heat and humidity coupling treatment, the independent temperature and humidity control system can better meet the requirement of the constantly changing heat and humidity ratio.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an air conditioning system with independent temperature and humidity control for adding fresh air according to an embodiment of the present invention;
fig. 2 is an entity diagram of a structure of an air conditioning system with independent temperature and humidity control for adding fresh air according to an embodiment of the present invention.
In the figure: 1. an outdoor unit system; 2. an indoor unit system; 3. a housing; 31. a solution regeneration channel; 32. a fresh air solution cooling and dehumidifying channel; 310. a regeneration air inlet; 311. a regenerated air outlet; 320. a fresh air inlet; 4. a solution regeneration device; 5. a fresh air solution cooling and dehumidifying device; 6. a refrigeration cycle system; 7. a compressor; 8. a first heat exchange means; 80. an air-refrigerant condenser; 81. a solution-refrigerant condenser 9, a second heat exchange device; 90. a solution heat exchanger; 91. a solution-refrigerant evaporator; 10. a third heat exchange means; 11. a solution circulation line; 12. a solution spray head; 13. a first solution pump; 14. a second solution pump; 15. a filler; 16. a dehumidifying solution; 17. a four-way regulating valve; 18. a first refrigerant distribution regulator; 19. a throttle valve; 20. a second refrigerant distribution regulator; 21. an indoor unit; 22. a dry air-refrigerant evaporator; 23. a fresh air port; 24. an air return opening; 25. an indoor air outlet; 26. an indoor fan; 27. a fresh air fan; 28. a centrifugal fan; 29. a filter screen; 100. a fresh air duct; 200. a refrigerant pipe.
Detailed Description
The embodiment of the invention provides a fresh air adding temperature and humidity independent control air conditioning system which is compact in structural design, eliminates indoor accumulated water and completes indoor temperature and humidity control through temperature and humidity independent control.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. 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 technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1, an embodiment of the present invention provides a temperature and humidity independent control air conditioning system for adding fresh air, including an outdoor unit system 1 located at an outdoor side and an indoor unit system 2 located at a user side, where the outdoor unit system 1 and the indoor unit system 2 are communicated with a refrigerant pipe 200 through a fresh air pipe 100; the outdoor unit system 1 includes a casing 3; a solution regeneration channel 31 and a fresh air solution cooling and dehumidifying channel 32 with openings at two ends are arranged in the shell 3, a solution regeneration device 4 is arranged in the solution regeneration channel 31, a fresh air solution cooling and dehumidifying device 5 is arranged in the fresh air solution cooling and dehumidifying channel 32, and the solution regeneration device 4 is communicated with the fresh air solution cooling and dehumidifying device 5 up and down; a refrigeration cycle system 6 is further arranged in the outdoor unit system 1 and the indoor unit system 2, and the refrigeration cycle system 6 comprises a compressor 7, a first heat exchange device 8 and a second heat exchange device 9 which are arranged in the outdoor unit system 1; the refrigeration cycle system 6 further comprises a third heat exchange device 10 arranged in the indoor unit system 2; the second heat exchange device 9 is arranged between the solution regeneration device 4 and the fresh air solution cooling and dehumidifying device 5; a solution circulating pipeline 11 is arranged between the solution regenerating device 4 and the fresh air solution cooling and dehumidifying device 5; one end of the solution circulating pipeline 11 is communicated with the fresh air solution cooling and dehumidifying device 5, and the other end of the solution circulating pipeline 11 passes through the second heat exchange device 9 and the first heat exchange device 8 and then is arranged above the solution regenerating device 4; the other end of the solution circulating pipeline 11 is provided with a plurality of solution nozzles 12; a first solution pump 13 is arranged at the upper end part of the fresh air solution cooling and dehumidifying device 5; the input end of the first solution pump 13 is connected to the solution regeneration device 4; the output end of the first solution pump 13 is provided with a plurality of solution nozzles 12; the solution circulation pipeline 11 is also provided with a second solution pump 14.
In a specific embodiment, as shown in fig. 1, the air conditioning system with independently controlled fresh air temperature and humidity is combined with a traditional split air conditioner, the outdoor unit system 1 is disposed outdoors, the indoor unit system 2 is disposed indoors at a user side, and the outdoor unit system 1 and the indoor unit system 2 are communicated through a fresh air pipe and a refrigerant pipeline. In the outdoor unit system 1, the solution is used for cooling and dehumidifying fresh air to replace the traditional refrigeration and dehumidification, thereby improving the evaporation temperature of the system and reducing the energy consumption of the system. The solution refers to a lithium chloride solution, and the solution dehumidification principle is as follows: lithium chloride solutions have a very good hygroscopicity. The lithium chloride solution with a certain concentration is fully contacted with the wet air at a certain temperature, so that the moisture content of the wet air can be greatly reduced, and the balance and stability can be kept. The moisture absorption capacity of the lithium chloride solution is related to the concentration and the temperature, and the higher the concentration is, the lower the temperature is, the higher the moisture absorption capacity is, and conversely, the moisture absorption capacity is small and even the lithium chloride solution is moisturized.
The flow of cooling and dehumidifying by using the solution is as follows: fresh air is blown in from fresh air solution cooling and dehumidifying channel 32, lithium chloride solution in fresh air solution cooling and dehumidifying device 5 cools and dehumidifies the fresh air, and the fresh air after cooling and dehumidifying is sent into indoors through the fresh air pipe.
The solution regeneration process comprises the following steps: the non-regenerated dilute lithium chloride solution which is cooled and dehumidified by fresh air flows into a solution circulation pipeline 11, the dilute lithium chloride solution flows to a second heat exchange device 9 along the solution circulation pipeline by pressurizing through a second solution pump 14, then the dilute lithium chloride solution continuously flows into a first heat exchange device 8 under the action of the second solution pump 14, the condensation heat of the first heat exchange device 8 heats the dilute lithium chloride solution, the temperature of the lithium chloride solution is increased, the capacity of the dilute solution for releasing moisture is enhanced, the dilute lithium chloride solution is sprayed out from a solution spray head 12 at the upper end part of a solution regeneration device 4 along the solution circulation pipeline 11 and is sprayed into the solution regeneration device 4, regeneration air is blown into the solution regeneration device 4 from the inlet of a solution regeneration channel 31 and is contacted with the heated dilute lithium chloride solution, the regeneration air and the solution carry out heat and moisture exchange, and moisture escapes into the regeneration air from the dilute lithium chloride solution, the lithium chloride solution is concentrated and regenerated. The lithium chloride solution after heat and moisture exchange permeates and drops downwards, flows through the second heat exchange device 9 to be cooled, the cooled lithium chloride solution continuously drops downwards, is dropped into the first solution pump 13, is output under pressure through the first solution pump 13,
after the pressurization of first solution pump 13 for the concentrated lithium chloride solution after being cooled is sprayed into in the new trend solution cooling dehydrating unit 5, new trend blows in new trend solution dehydrating unit 5 from new trend solution cooling dehumidification passageway 32, and the new trend leaves new trend solution dehydrating unit 5 after being dehumidified and cooled by the concentrated lithium chloride solution after the cooling, sends into indoor set system 2 through the new trend pipe, sends into indoor. The concentrated lithium chloride solution in the fresh air solution dehumidifying device 5 after the fresh air is dehumidified becomes the dilute lithium chloride solution, and enters the solution circulating pipeline 11 again to be circulated next time, so that the solution is recycled, and the utilization rate of energy is improved.
The outdoor unit system 1 adopts a variable-frequency vapor compression refrigeration system, the compressor 7 adopts a variable-frequency compressor, the variable-frequency compressor can be used in summer and winter, in the case of summer refrigeration operation, the first heat exchange device 8 is used as a condenser, meanwhile, the second heat exchange device 9 is used as an evaporator, the third heat exchange device in the indoor unit system 2 is an evaporator which is arranged in parallel, and the evaporator in the indoor unit system 2 cools indoor circulating air and bears indoor sensible heat load; the evaporator in the second heat exchange device 9 is used for cooling the solution passing through the solution regeneration device 4, so as to improve the moisture absorption capacity of the solution.
Wherein, the refrigerant that compressor 7 adopted is R410A, and R410A is a novel environmental protection refrigerant, does not destroy ozone, and refrigeration (warm) efficiency is high, comprises two kinds of quasi azeotropic mixture R32 and R125 respectively 50%, mainly contains hydrogen, fluorine and carbon element and constitutes, has characteristics such as stable, nontoxic, superior performance.
Furthermore, the solution regeneration device 4 and the fresh air solution cooling and dehumidifying device 5 are respectively provided with a filler 15, and the filler 15 is used for increasing the contact area of the moisture-heat exchange between the air and the solution; the inner side of the bottom of the fresh air solution cooling and dehumidifying device 5 is provided with dehumidifying solution 16.
In a specific embodiment, as shown in fig. 1, the solution regeneration device 4 and the fresh air solution dehumidification device 5 are respectively provided with a filler 15, the filler 15 can uniformly disperse a concentrated (dilute) solution in a space and allow the solution to slowly pass through a heat and moisture exchange channel, and the filler 15 increases a contact surface to allow the concentrated (dilute) solution to have sufficient time and space to contact with air in the channel to complete a heat and moisture exchange process, so as to achieve the purpose of enhancing the amount of heat dissipation and the amount of heat dissipation. Further, the first heat exchange device 8 is arranged at a side far away from the air inlet of the solution regeneration device 4, and the first heat exchange device 8 comprises an air-refrigerant condenser 80 and a solution-refrigerant condenser 81; the second heat exchange means 9 includes a solution heat exchanger 90 and a solution-refrigerant evaporator 91, and the solution heat exchanger 90 is disposed above the solution-refrigerant evaporator 91.
In a specific embodiment, as shown in fig. 1, the first heat exchange device 8 is divided into two sections, the first section is an air-refrigerant condenser 80, the second section is a solution-refrigerant condenser 81, and the high-temperature and high-pressure refrigerant at the outlet of the inverter compressor 7 passes through the air-refrigerant condenser 80 and the solution-refrigerant condenser 81. The first heat exchange device 8 is arranged in the channel of the solution regeneration channel 31, and the refrigerant passes through a first section air-refrigerant condenser 80 at the right end in fig. 1 to exchange heat with the regenerated air in a convection manner; the solution-refrigerant condenser 81, which passes through the second stage later, is located at the left end in fig. 1, and exchanges heat with the liquid of the lithium chloride solution.
Further, the refrigeration cycle system 6 further comprises a four-way regulating valve 17, and the four-way regulating valve 17 is connected with an inlet and an outlet of the compressor 7; the outlet end of the compressor 7 is connected with the inlet of the air-refrigerant condenser 80 after passing through the four-way regulating valve 17; the outlet of the air-refrigerant condenser 80 is connected to the inlet of the solution-refrigerant condenser 81, and the outlet of the solution-refrigerant condenser 81 is connected to the inlet of the first refrigerant distribution regulator 18; the outlet of the first refrigerant distribution regulator 18 is connected to two throttling valves 19, and an outlet of one throttling valve 19 is connected to an inlet of the solution-refrigerant evaporator 91; the outlet of the other throttle valve 19 is connected with the inlet of the third heat exchange device 10 in the indoor unit system 2.
In a specific embodiment, as shown in fig. 1, the four-way regulating valve 17 is used to switch the inlet and outlet of the compressor 7, exchange the evaporator and the condenser, exchange the fresh air solution cooling and dehumidifying device and the solution regenerating device, heat and humidify the fresh air outdoors, change the evaporator inside into the condenser, release heat of the condenser to heat the return air indoors, and achieve the effect of heating indoors.
Specifically, in the process of cooling in summer, the high-temperature and high-pressure refrigerant sprayed from the outlet of the compressor 7 enters the air-refrigerant condenser 80 through the four-way regulating valve 17 for heat exchange, and then is divided into two paths through the first refrigerant distribution regulator 16, wherein one path is connected with the inlet of the solution-refrigerant evaporator 91 through the throttle valve 19, and enters the solution-refrigerant evaporator 91 to cool the liquid of the solution.
Further, the inlet end of the compressor 7 is connected to a second refrigerant distribution regulator 20 through the four-way regulating valve 17, and one passage of the second refrigerant distribution regulator 20 is communicated with the outlet of the solution-refrigerant evaporator 91; the other passage of the second refrigerant distribution regulator 20 communicates with the outlet of the third heat exchange means 10 of the indoor unit system 2.
In a specific embodiment, as shown in fig. 1, after the refrigerant completes the refrigeration cycle, the refrigerant flows into the second refrigerant distribution regulator 20 from the outlet of the solution-refrigerant evaporator 91 and returns to the compressor 7 through the four-way regulating valve 17, and the refrigerant in the third heat exchange device 10 completes one refrigeration cycle, flows out from the outlet, passes through the second refrigerant distribution regulator 20, and returns to the compressor 7 through the four-way regulating valve 17, thereby completing one closed refrigerant cycle.
Further, the indoor unit system 2 includes an indoor unit 21, the third heat exchanger 10 is disposed in the indoor unit 21, the third heat exchanger 10 is a dry air-refrigerant evaporator 22, a fresh air inlet 23, a return air inlet 24 and an indoor air outlet 25 are respectively disposed on each side of the indoor unit 22, and the fresh air inlet 23 is communicated with the fresh air solution cooling and dehumidifying channel 32.
In a specific embodiment, as shown in fig. 1, the third heat exchange device 10 is a dry air-refrigerant evaporator 21, and fresh air enters the indoor unit 21 through a fresh air inlet 23 after being cooled and dehumidified by a solution, and flows into the room from the fresh air inlet, and simultaneously flows into the dry air-refrigerant evaporator 22 through a return air inlet 24, and the dry air-refrigerant evaporator 22 cools return air to eliminate part of indoor sensible heat load.
Further, an indoor fan 26 is disposed between the dry air-refrigerant evaporator 22 and the indoor air outlet 25.
In a particular embodiment, an indoor fan 26 is disposed between the dry air-refrigerant evaporator 22 and the indoor air outlet 25, the indoor fan 26 discharging the indoor return air from the indoor air outlet 25.
Further, the fresh air solution cooling and dehumidifying channel 32 comprises a fresh air inlet 320 communicated with the fresh air inlet 23, and a fresh air fan 27 is arranged at a position, close to the fresh air inlet 23, of the fresh air solution cooling and dehumidifying channel 32; the solution regeneration channel 31 comprises a regeneration air inlet 310 and a regeneration air outlet 311 which are communicated, a centrifugal fan 28 is further arranged in the solution regeneration channel 31, and the centrifugal fan 28 is positioned between the first heat exchange device 8 and the regeneration air outlet 311.
In the embodiment, two fans of the outdoor unit system 1, namely the new fan 27 and the centrifugal fan 28, are respectively distributed in the new air solution cooling and dehumidifying channel 32 and the solution regeneration channel 31. The fresh air fan 27 drives fresh air to flow into the fresh air solution cooling and dehumidifying channel 32, and the processed fresh air enters the fresh air pipe and is sent into the room through the fresh air port 23. The centrifugal fan 28 discharges the regeneration air after passing through the air-refrigerant condenser 80 from the regeneration air outlet 311.
Furthermore, a filter screen 29 is respectively arranged at the air inlet of the fresh air inlet 320 and the air inlet of the regenerated air inlet 310.
In a specific embodiment, as shown in fig. 1, the fresh air inlet 320 and the regeneration air inlet 310 are provided with filter screens 29 for primarily filtering the fresh air and the regeneration air, and the fresh air or the regeneration air filtered by the filter screens 29 respectively enters the fresh air solution cooling and dehumidifying device 5 and the solution regeneration device 4 for cooling, dehumidifying and solution regeneration.
Further, the solution is a lithium chloride solution; the refrigerant is R410A.
It will be appreciated that the solution is a lithium chloride solution, which is very hygroscopic. The lithium chloride solution with a certain concentration is fully contacted with the wet air at a certain temperature, so that the moisture content of the wet air can be greatly reduced, and the balance and stability can be kept. The moisture absorption capacity of the lithium chloride solution is related to the concentration and the temperature, and the higher the concentration is, the lower the temperature is, the higher the moisture absorption capacity is, and conversely, the moisture absorption capacity is small and even the lithium chloride solution is moisturized.
The refrigerant R410A R is a novel environment-friendly refrigerant, does not destroy ozone, has high refrigerating (heating) efficiency, consists of two quasi-azeotropic mixtures R32 and R125 which are respectively 50 percent, mainly consists of hydrogen, fluorine and carbon elements, and has the characteristics of stability, no toxicity, excellent performance and the like.
To sum up, the fresh air temperature and humidity independent control air conditioning system disclosed by the embodiment of the invention comprises an outdoor unit system positioned at the outdoor side and an indoor unit system positioned at the user side, wherein the outdoor unit system and the indoor unit system are communicated through a fresh air pipe and a refrigerating pipe; the outdoor unit system comprises a shell; a solution regeneration channel and a fresh air solution cooling and dehumidifying channel with openings at two ends are arranged in the shell, a solution regeneration device is arranged in the solution regeneration channel, a fresh air solution cooling and dehumidifying device is arranged in the fresh air solution cooling and dehumidifying channel, and the solution regeneration device is communicated with the fresh air solution cooling and dehumidifying device up and down; a refrigeration cycle system is further arranged in the outdoor unit system and the indoor unit system, and comprises a compressor, a first heat exchange device and a second heat exchange device which are arranged in the outdoor unit system; the refrigeration cycle system also comprises a third heat exchange device arranged in the indoor unit system; the second heat exchange device is arranged between the solution regeneration device and the fresh air solution cooling and dehumidifying device; a solution circulating pipeline communicated with the fresh air solution cooling and dehumidifying device is arranged between the solution regenerating device and the fresh air solution cooling and dehumidifying device; one end of the solution circulating pipeline is communicated with the fresh air solution cooling and dehumidifying device, and the other end of the solution circulating pipeline passes through the second heat exchange device and the first heat exchange device and then is arranged above the solution regenerating device; the other end of the solution circulating pipeline is provided with a plurality of solution nozzles; the upper end part of the fresh air solution cooling and dehumidifying device is provided with a first solution pump; the input end of the first solution pump is connected to the solution regeneration device; the output end of the first solution pump is provided with a plurality of solution spray heads; and a second solution pump is also arranged on the solution circulating pipeline. Set up new trend solution cooling dehydrating unit and solution regenerating unit through the off-premises station system, and be equipped with the solution circulation pipeline of intercommunication, make and utilize solution to dehumidify the new trend and make solution regeneration, through outdoor and indoor refrigeration cycle system, the outdoor new trend of control realizes indoor humiture independent control through solution cooling dehumidification and indoor circulated air cooling, in order to satisfy the change of the indoor constantly changing heat and humidity load, the fresh air volume of introducing has improved the indoor air quality, indoor pollutant has been diluted, dehumidification process puts in the outdoor side simultaneously, the problem of the indoor side humidity or ponding has been eliminated. The invention does not adopt the refrigeration dehumidification of the original split air conditioner, but adopts solution dehumidification. Compared with the traditional refrigeration dehumidification, the solution dehumidification refrigeration cycle can adopt higher evaporation temperature, the performance coefficient of the refrigeration cycle is improved, and the energy consumption is reduced. Compared with the traditional split air conditioner heat and humidity coupling treatment, the independent temperature and humidity control system can better meet the requirement of the constantly changing heat and humidity ratio.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The fresh air adding temperature and humidity independent control air conditioning system is characterized by comprising an outdoor unit system (1) and an indoor unit system (2), wherein the outdoor unit system (1) is located on the outdoor side, the indoor unit system (2) is located on the user side, and the outdoor unit system (1) is communicated with the indoor unit system (2) through a fresh air pipe (100) and a refrigerant pipe (200); the outdoor unit system (1) comprises a casing (3); a solution regeneration channel (31) with two open ends and a fresh air solution cooling and dehumidifying channel (32) are arranged in the shell (3), a solution regeneration device (4) is arranged in the solution regeneration channel (31), a fresh air solution cooling and dehumidifying device (5) is arranged in the fresh air solution cooling and dehumidifying channel (32), and the solution regeneration device (4) is communicated with the fresh air solution cooling and dehumidifying device (5) up and down; a refrigeration cycle system (6) is further arranged in the outdoor unit system (1) and the indoor unit system (2), and the refrigeration cycle system (6) comprises a compressor (7), a first heat exchange device (8) and a second heat exchange device (9) which are arranged in the outdoor unit system (1); the first heat exchange means (8) comprises an air-refrigerant condenser (80) and a solution-refrigerant condenser (81); the second heat exchange means (9) comprises a solution heat exchanger (90) and a solution-refrigerant evaporator (91); the refrigeration cycle system (6) also comprises a third heat exchange device (10) arranged in the indoor unit system (2); the second heat exchange device (9) is arranged between the solution regeneration device (4) and the fresh air solution cooling and dehumidifying device (5); a solution circulating pipeline (11) is arranged between the solution regenerating device (4) and the fresh air solution cooling and dehumidifying device (5) and is communicated with the fresh air solution cooling and dehumidifying device; one end of the solution circulating pipeline (11) is communicated with the fresh air solution cooling and dehumidifying device (5), and the other end of the solution circulating pipeline (11) passes through the second heat exchange device (9) and the first heat exchange device (8) and then is arranged above the solution regenerating device (4); the other end of the solution circulating pipeline (11) is provided with a plurality of solution nozzles (12); a first solution pump (13) is arranged at the upper end part of the fresh air solution cooling and dehumidifying device (5); the input end of the first solution pump (13) is connected to the solution regeneration device (4); the output end of the first solution pump (13) is provided with a plurality of solution spray heads (12); and a second solution pump (14) is also arranged on the solution circulating pipeline (11).
2. The fresh air-adding temperature and humidity independent control air conditioning system according to claim 1, wherein the solution regeneration device (4) and the fresh air solution cooling and dehumidifying device (5) are respectively provided with a filler (15), and the filler (15) is used for increasing the contact area of the heat and moisture exchange between air and solution; and a dehumidifying solution (16) is arranged on the inner side of the bottom of the fresh air solution cooling and dehumidifying device (5).
3. The fresh air-adding temperature and humidity independent control air conditioning system according to claim 1, wherein the first heat exchange device (8) is arranged at one side far away from an air inlet of the solution regeneration device (4), and the first heat exchange device (8) comprises an air-refrigerant condenser (80) and a solution-refrigerant condenser (81); the second heat exchange device (9) comprises a solution heat exchanger (90) and a solution-refrigerant evaporator (91), and the solution heat exchanger (90) is arranged above the solution-refrigerant evaporator (91).
4. The fresh air-adding temperature and humidity independent control air conditioning system according to claim 3, wherein the refrigeration cycle system (6) further comprises a four-way regulating valve (17), and the four-way regulating valve (17) is connected with an inlet and an outlet of the compressor (7); the outlet end of the compressor (7) is connected with the inlet of the air-refrigerant condenser (80) after passing through the four-way regulating valve (17); the outlet of the air-refrigerant condenser (80) is connected with the inlet of the solution-refrigerant condenser (81), and the outlet of the solution-refrigerant condenser (81) is connected with the inlet of the first refrigerant distribution regulator (18); the outlet of the first refrigerant distribution regulator (18) is connected with two throttling valves (19), and the outlet of one throttling valve (19) is connected with the inlet of the solution-refrigerant evaporator (91); the outlet of the other throttle valve (19) is connected with the inlet of the third heat exchange device (10) in the indoor unit system (2).
5. The fresh air temperature and humidity independent control air conditioning system according to claim 4, wherein the inlet end of the compressor (7) is connected with a second refrigerant distribution regulator (20) through the four-way regulating valve (17), and one passage of the second refrigerant distribution regulator (20) is communicated with the outlet of the solution-refrigerant evaporator (91); the other passage of the second refrigerant distribution regulator (20) is communicated with the outlet of the third heat exchange device (10) of the indoor unit system (2).
6. The fresh air adding temperature and humidity independent control air conditioning system according to claim 1, wherein the indoor unit system (2) comprises an indoor unit (21), the third heat exchange device (10) is arranged in the indoor unit (21), the third heat exchange device (10) is a dry air-refrigerant evaporator (22), each side of the indoor unit (21) is respectively provided with a fresh air inlet (23), an air return inlet (24) and an indoor air outlet (25), and the fresh air inlet (23) is communicated with the fresh air solution cooling and dehumidifying channel (32).
7. The fresh air temperature and humidity independent control air conditioning system according to claim 6, wherein an indoor fan (26) is further disposed between the dry air-refrigerant evaporator (22) and the indoor air outlet (25).
8. The fresh air-adding temperature and humidity independent control air conditioning system according to claim 1, wherein the fresh air solution cooling and dehumidifying channel (32) comprises a fresh air inlet (320) communicated with a fresh air port (23), and a fresh air fan (27) is arranged at a position, close to the fresh air port (23), of the fresh air solution cooling and dehumidifying channel (32); the solution regeneration channel (31) comprises a regeneration air inlet (310) and a regeneration air outlet (311) which are communicated, a centrifugal fan (28) is further arranged in the solution regeneration channel (31), and the centrifugal fan (28) is located between the first heat exchange device (8) and the regeneration air outlet (311).
9. The fresh air-adding temperature and humidity independent control air conditioning system according to claim 8, wherein a filter screen (29) is respectively arranged at the air inlet of the fresh air inlet (320) and the air inlet of the regenerated air inlet (310).
10. The fresh air temperature and humidity independent control air conditioning system according to claim 1, wherein the solution is a lithium chloride solution; the refrigerant is R410A.
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| US10921002B2 (en) * | 2017-03-16 | 2021-02-16 | Therma-Stor LLC | Dehumidifier with secondary evaporator and condenser coils in a single coil pack |
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| CN107270427A (en) * | 2017-06-06 | 2017-10-20 | 江苏格瑞力德空调制冷设备有限公司 | A kind of novel solutions damping Fresh air handling units with heat recovery function |
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