CN110986207A - Heat pump driven direct-expansion type temperature-humidity separate heat control recovery type solution humidity conditioning fresh air handling unit - Google Patents
Heat pump driven direct-expansion type temperature-humidity separate heat control recovery type solution humidity conditioning fresh air handling unit Download PDFInfo
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- CN110986207A CN110986207A CN201911404199.3A CN201911404199A CN110986207A CN 110986207 A CN110986207 A CN 110986207A CN 201911404199 A CN201911404199 A CN 201911404199A CN 110986207 A CN110986207 A CN 110986207A
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- 230000003750 conditioning effect Effects 0.000 title description 3
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- 239000000243 solution Substances 0.000 description 196
- 239000012266 salt solution Substances 0.000 description 15
- 238000007791 dehumidification Methods 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
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- 238000000034 method Methods 0.000 description 3
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention relates to a direct-expansion temperature-humidity separate control heat recovery type solution humidity control fresh air handling unit, which comprises a heat pump system, a heat recovery coil, a condenser, an expansion valve, a precooling preheating coil and an evaporator, wherein the heat pump system is formed by connecting a compressor, a heat recovery coil, a condenser, an expansion valve, a precooling preheating coil and an evaporator through pipelines; the solution regeneration system is formed by connecting a regeneration solution pump, a condenser, a regeneration solution spray pipe, regeneration solution wet film fillers and a regeneration solution collecting tank through pipelines, the solution humidity control system is formed by connecting a humidity control solution pump, an evaporator, a humidity control solution spray pipe, humidity control solution wet film fillers and a humidity control solution collecting tank through pipelines, and a heat recovery return air solution regeneration channel is formed by a heat recovery coil pipe and the regeneration solution wet film fillers; a fresh air humidifying and air supplying channel is formed by a precooling and preheating coil pipe and a humidifying solution wet film seasoning. The direct-expansion temperature-humidity-control heat recovery type solution humidity-control fresh air handling unit can be widely applied to places needing dry fresh air.
Description
Technical Field
The invention relates to a fresh air handling unit, in particular to a heat pump driven direct-expansion temperature-humidity-control heat recovery type solution humidity-control fresh air handling unit.
Background
Most of existing air conditioning systems adopt a condensation dehumidification treatment mode, low-temperature chilled water is prepared by a refrigerator, and the air temperature is reduced to be below a dew point, so that the dehumidification treatment process of fresh air is realized, the chilled water temperature is far lower than the cold water temperature required by cooling to meet the dehumidification requirement, the evaporation temperature of the refrigerator is reduced, and the performance coefficient of the refrigerator is reduced. At present, a solution dehumidifying device adopts a salt solution with moisture absorption and desorption characteristics as a working medium, and the salt solution is conveyed to a fresh air dehumidifying unit and a solution regeneration unit module through a solution pipeline by a solution pump to directly contact with fresh air for heat and mass transfer, so that a dehumidifying or humidifying (humidity regulating) treatment process of the fresh air is realized; the solution regeneration heat source of the solution dehumidification equipment can adopt a low-grade heat source as an energy source for solution concentration regeneration, such as solar energy, hot water of a heat supply network or heat discharge of a heat pump system, and the like, so that the solution regeneration heat source has great advantages in the aspects of saving energy, improving indoor air quality and the like, is widely concerned and applied to more and more buildings.
However, because the prior art adopts a warm-humid air-mixing structure, namely, the salt solution firstly exchanges heat through the evaporator of the heat pump system and then enters the dehumidification unit to cool and dehumidify the air, because the salt solution has strong corrosivity to the ordinary heat exchanger, the ordinary heat exchanger cannot bear the long-time corrosion of the salt solution, and the corrosion-resistant heat exchanger (such as a titanium heat exchanger) has the common characteristics, namely the heat exchange efficiency is reduced and the price is high, the two requirements of energy saving and corrosion prevention cannot be simultaneously completed (the heat transfer coefficient of copper is 401W/mK, the heat transfer coefficient of titanium is 14.63W/mK, and the heat transfer efficiency of titanium is reduced by 27 times compared with that of copper);
the heat pump type solution dehumidifying unit utilizes the evaporator to cool the dehumidifying solution, the refrigerant exchanges heat with the dehumidifying solution through the evaporator to evaporate and take away heat in the solution, the low-temperature saline solution cools and dehumidifies fresh air, the change of the partial pressure of the surface steam of the saline solution is used as a driving force to cool and dehumidify the fresh air, when the partial pressure of the steam on the surface of the saline solution is less than the partial pressure of the steam of the fresh air, the temperature and the moisture in the fresh air can be transferred to the saline solution, thereby realizing the cooling and dehumidifying process of the fresh air, achieving the effect of heat and mass transfer, the saline solution absorbs the moisture to rise the temperature, the concentration becomes dilute, the partial pressure of the surface steam can be increased, the partial pressure of the surface steam with the change of the temperature and the concentration also changes, when the partial pressure of the steam on the surface of the saline solution is close to or equal to the partial pressure of the, the solution needs to enter a regeneration unit for dehumidification and regeneration, and the solution is regenerated by utilizing the condensation heat discharge of a heat pump system, so that the concentration of the solution directly influences the dehumidification effect of the unit; because of technical limitation, the evaporator and the condenser of the heat pump system are mostly made of titanium, because the heat transfer coefficient of titanium is low, when the salt solution is treated to meet the dehumidification requirement, the heat exchange area of the heat exchanger and the flow of the salt solution need to be increased, the heat in the dehumidification salt solution can be evaporated and taken away, the heat discharged by the compressor is discharged to the outdoor air through the heat exchange of the condenser and the solution, the heat pump system needs to do more work, consumes a large amount of electric energy, cannot play the energy-saving effect, and has large irreversible loss
The solution dehumidifier unit total heat recovery function, the present solution dehumidifier unit mostly adopts the solution heat recovery form, the air cooling is recovered, the heat preprocesses the fresh air, thereby reaching the assumption of the unit total heat recovery, in the actual operation, the solution needs to be lifted to the return air total heat recovery unit by a water pump, the solution returns to the fresh air precooling unit by the self gravity of the solution to complete the total heat recovery process, the total heat recovery solution has no cold and heat source, the return air and the fresh air have about 10 degrees of temperature difference on the surface, a very large energy recovery space is provided, the heat transfer temperature difference and the medium temperature difference are subtracted in the actual operation, the power consumption of the water pump is subtracted, and the actually recovered energy is very limited.
Disclosure of Invention
The invention mainly aims to provide a heat pump driven direct-expansion temperature-humidity-control heat recovery type solution humidity-control fresh air handling unit; the problems that in the prior art, a heat exchanger is low in heat exchange efficiency and high in manufacturing cost, the return air heat recovery effect is poor, a solution dehumidification fresh air handling unit cannot meet the energy-saving and anti-corrosion requirements at the same time, and a heat pump system is low in efficiency are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a direct-expansion temperature and humidity separate heat control recovery solution humidifying fresh air handling unit comprises a direct-expansion heat pump system, a condensate solution regeneration system, a direct-expansion evaporation solution humidifying system, a return air heat recovery solution regeneration exhaust channel and a fresh air direct-expansion precooling humidifying air supply channel, wherein the direct-expansion heat pump system comprises a heat pump system, a condensate solution regeneration system, a direct-expansion evaporation solution humidifying system, a return air heat recovery solution regeneration exhaust channel and a: the direct expansion type heat pump system is formed by connecting a compressor 1, a condensation heat recovery coil 4, a condenser 5, an expansion valve 7, a direct expansion precooling preheating coil 8 and an evaporator 11 through pipelines; the condensate solution regeneration system is formed by connecting a regeneration solution pump 12, a condenser 5, a regeneration solution spray pipe 13, a regeneration solution wet film filler 14 and a regeneration solution collecting tank 15 through pipelines; a direct expansion fresh air precooling and preheating solution humidifying system which is formed by connecting a humidifying solution pump 16, an evaporator 11, a humidifying solution spray pipe 17, a humidifying solution wet film filler 18 and a humidifying solution collecting tank 19 through pipelines; a wind return heat recovery solution regeneration exhaust channel is formed by the direct expansion heat recovery coil pipe 4, a regeneration solution wet film filler 14, a regeneration solution spray pipe 13 and a regeneration solution collecting tank 15; a fresh air direct-expansion pre-cooling humidifying air supply channel is formed by a condensation pre-cooling preheating coil 8, a humidifying solution wet film filler 18, a humidifying solution spray pipe 17 and a humidifying solution collecting tank 19.
Preferably, the direct expansion type heat pump system comprises a compressor 1, a first electromagnetic valve 2, a condensation heat recovery coil 4, a second electromagnetic valve 3, a condenser 5, a third electromagnetic valve 6, a first expansion valve 7, a direct expansion precooling preheating coil 8, a fourth electromagnetic valve 9, a second expansion valve 10 and an evaporator 11 which are connected through a pipeline, bypass pipes are arranged at the front ends of the condensation heat recovery coil 4 and the condenser 5, and the electromagnetic valves are additionally arranged on the bypass pipes at the front ends of the heat recovery coil 4 and the condenser 5 in the condensation heat recovery coil 4 respectively; a bypass pipe is arranged at the front end of the direct expansion precooling preheating coil 8 and the front end of the evaporator 11, and an electromagnetic valve and an expansion valve are respectively additionally arranged at the front end of the direct expansion precooling preheating coil 8 and the bypass pipe; the direct expansion type heat pump system is connected by a pipeline, refrigerant is filled in the pipeline, and a water condensation plate is additionally arranged below the direct expansion coil and the condensation coil.
Preferably, the condensed solution regeneration system is formed by connecting a regeneration solution pump 12, a condenser 5, a regeneration solution spray pipe 13, a regeneration solution wet film filler 14 and a regeneration solution collecting tank 15 through a pipeline; the solution regeneration system is connected with an inlet of a regeneration solution pump 12 through a regeneration solution collecting tank 15, an outlet of the regeneration solution pump 12 is connected with an inlet of a solution of a condenser 5, an outlet of the solution of the condenser 5 is connected with a regeneration spray pipe 13, the regeneration spray pipe 13 sprays the regeneration solution on a regeneration solution wet film filler 14 to form a liquid film, and the liquid returns to the regeneration solution collecting tank 15 by utilizing the self gravity of the solution to complete the circulation of the condensation solution regeneration system.
Preferably, the direct expansion evaporation solution humidity control system is a solution humidity control system formed by connecting a humidity control solution pump 16, an evaporator 11, a humidity control solution spray pipe 17, a humidity control solution wet film filler 18 and a humidity control solution collecting tank 19 through pipelines; in the solution humidity control system, a humidity control solution collecting tank 19 is connected with an inlet of a humidity control solution pump 16, an outlet of the humidity control solution pump 16 is connected with a solution inlet of an evaporator 11, a solution outlet of the evaporator 11 is connected with a humidity control spray pipe 17, the humidity control spray pipe 17 sprays humidity control solution on a humidity control solution wet film filler 18 to form a liquid film, and the liquid returns to the humidity control solution collecting tank 19 by utilizing the self gravity of the solution to complete the circulation of the direct expansion evaporation solution humidity control system.
Preferably, the return air heat recovery solution regeneration exhaust channel consists of a condensation heat recovery coil pipe 4, a regeneration solution wet film filler 14, a regeneration solution spray pipe 13 and a regeneration solution collecting tank 15; the regeneration solution is conveyed to the regeneration solution spraying pipe 13 through the regeneration solution pump 12 through a pipeline, the regeneration solution spraying pipe 13 is uniformly sprayed on the regeneration solution wet film filler 14 to form a liquid film, indoor return air passes through the condensation heat recovery coil pipe 4 and then contacts with the regeneration solution wet film filler 14 and the regeneration solution, the condensation heat of the heat pump system and the moisture released by the regeneration solution are taken away and discharged outdoors, and outdoor fresh air can be adopted to replace the return air for solution regeneration when the indoor return air regeneration is not performed.
Preferably, the fresh air direct-expansion precooling and humidifying air supply channel consists of a condensation precooling preheating coil 8, a humidifying solution wet film seasoning 18, a humidifying solution spray pipe 17 and a humidifying solution collecting tank 19; the humidity-controlling solution is conveyed to the humidity-controlling solution spraying pipe 17 through a pipeline by the humidity-controlling solution pump 16, the humidity-controlling solution is uniformly sprayed onto the humidity-controlling solution wet film packing 18 by the humidity-controlling solution spraying pipe 17 to form a liquid film, outdoor fresh air is pre-cooled and preheated by the condensation pre-cooling preheating coil 8 and then contacts with the humidity-controlling solution when passing through the humidity-controlling solution wet film packing 18, the fresh air is pre-cooled and preheated, and the fresh air is sent to the indoor after being subjected to humidity control to meet the requirement of an air supply state.
Preferably, the condensation heat recovery coil and the direct expansion precooling preheating coil are both fin type and are respectively arranged at the return air inlet and the fresh air inlet for detection: and a condensing coil water condensation disc 21 and a straight expansion coil water condensation disc 20 are respectively arranged below the condensing heat recovery coil 4 and the straight expansion pre-cooling coil 5.
Compared with the prior art, the invention has the beneficial effects that:
the unit controls the temperature and the humidity separately, when the refrigeration mode runs in summer, the condensation pre-cooling coil pipe controls the temperature of fresh air, the fresh air is pre-cooled and then is sent to the solution humidifying module, and the dehumidified salt solution is sent to the indoor after being dehumidified, so that the evaporation temperature of the heat pump system can be effectively increased by adopting a temperature and humidity separate control design, and the temperature and humidity separate control design has the following advantages;
the direct expansion precooling and preheating coil is arranged at the fresh air inlet, on one hand, fresh air heat can be taken away by precooling fresh air, the load of a dehumidification module is reduced, the dehumidification efficiency of a unit is improved, on the other hand, a refrigerant absorbs the fresh air heat, the evaporation temperature is improved, and therefore the efficiency of the whole unit can be improved. The system COP can be improved by 3-5% when the evaporation temperature is increased by 1 ℃; the regeneration system also adopts a temperature and humidity control design, a condensation heat recovery coil is arranged at an inlet of return air, the return air enters a regeneration unit after the temperature of the condensation heat recovery coil rises, a condenser controls the temperature of the regeneration solution to heat and release the moisture in the solution, the heat exhausted by a compressor exchanges heat with indoor return air through the condensation heat recovery coil, the return air exchanges heat with a refrigerant when passing through the condensation heat recovery coil, the cold quantity of the return air is recovered by the refrigerant to reduce the condensation temperature, the heat of the return air is absorbed by the refrigerant to improve the exhaust temperature, the high-temperature exhaust air carries away the moisture released by the regeneration solution when passing through a regeneration module, and the mixed high-temperature high-humidity gas is exhausted outdoors to, the air return cold quantity is recovered, the exhaust temperature is increased, the condensation temperature is reduced, and the solution is regenerated, the temperature and humidity control design greatly improves the efficiency of the whole system, and the COP of the unit can be improved by 2-3% when the condensation temperature is reduced by 1 ℃;
the direct expansion precooling preheating coil is arranged at the fresh air inlet, the condensation heat recovery coil is arranged at the return air inlet, the problem of corrosion resistance is not required to be considered when the direct expansion precooling preheating coil is not contacted with a salt solution, and a common finned heat exchanger can not only realize cold and hot water in a unit but also solve the problem of corrosion resistance of the cold heat exchanger, not only can recover heat, but also does not need to add a heat recovery module and a water pump, thereby reducing the cost and improving the efficiency of the whole unit; the invention adopts the salt solution as the dehumidifying medium, the salt solution has the function of sterilizing and purifying air, the air supply quality can be effectively improved, and the invention can be widely applied to places needing to provide dry fresh air.
Drawings
FIG. 1 is a schematic diagram of the cooling and dehumidifying operation in summer according to the embodiment of the present invention
FIG. 2 is a schematic view of the heating and humidity conditioning conditions in winter according to the embodiment of the present invention
FIG. 3 is a schematic diagram of a two-stage module dual system in accordance with an embodiment of the present invention.
In the figure: 1. a compressor; 2. a first electromagnetic valve; 3. a second electromagnetic valve; 4. a condensation heat recovery coil; 5. A condenser; 6. a third electromagnetic valve; 7. a first expansion valve; 8. a direct expansion precooling preheating coil; 9. a fourth electromagnetic valve; 10. a second expansion valve; 11. an evaporator; 12. a regeneration solution pump; 13. a regeneration solution spray pipe; 14. Regenerating solution wet film filler; 15. a regeneration solution collecting tank; 16. a humidity-adjusting solution pump; 17. a humidifying solution spray pipe; 18. humidifying solution wet film seasoning; 19. a humidifying solution collecting tank; 20. a water condensing disc of the direct expansion coil pipe; 21. condensing coil water condensing disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
As shown in fig. 1, the embodiment of the invention comprises a heat pump system formed by connecting a compressor 1, a first electromagnetic valve 2, a second electromagnetic valve 3, a condensation heat recovery coil 4, a condenser 5, a third electromagnetic valve 6, a first expansion valve 7, a direct expansion precooling preheating coil 8, a fourth electromagnetic valve 9, a second expansion valve 10 and an evaporator 11 through pipelines, wherein three-way pipes are arranged at the outlet of the compressor 1, the inlet and the outlet of the condenser 5 and the front end of the inlet of the evaporator 11, the first electromagnetic valve 2 and the second electromagnetic valve 3 are respectively additionally arranged at the first outlet and the second outlet of the three-way pipe at the exhaust outlet of the compressor 1, the third electromagnetic valve 6, the fourth electromagnetic valve 9, the first expansion valve 7 and the second expansion valve 10 are respectively arranged at the first outlet and the second outlet of; the solution regeneration system is formed by connecting a regeneration solution pump 12, a condenser 5, a regeneration solution spray pipe 13, a regeneration solution wet film filler 14 and a regeneration solution collecting tank 15 through pipelines, and saline solution is filled in the system; a solution humidifying system formed by connecting a humidifying solution pump 16, an evaporator 11, a humidifying solution spray pipe 17, a humidifying solution wet film filler 18 and a humidifying solution collecting tank 19 through pipelines, wherein a salt solution is filled in the system, and a heat recovery return air solution regeneration channel is formed by the condensation heat recovery coil pipe 4 and the regeneration solution wet film filler 14; a fresh air humidifying and air supplying channel is formed by the direct expansion precooling preheating coil 8 and the humidifying solution wet film seasoning 18.
A heat pump system: refrigerant under the refrigeration working condition is compressed by a compressor 1 to be changed into high-temperature and high-pressure gas, an exhaust port of the compressor 1 is connected by a pipeline and is conveyed to a condensation heat recovery coil pipe 4 through a first electromagnetic valve 2 to exchange heat with indoor return air, the refrigerant absorbs the cold energy of the return air and is conveyed to a condenser 5 through a pipeline and mixed with the refrigerant passing through a second electromagnetic valve 3 to exchange heat with a regeneration solution, the refrigerant after being condensed and cooled is conveyed to a first expansion valve 7 through a third electromagnetic valve 6 through the pipeline, the refrigerant is changed into low-temperature and low-pressure gas after passing through the first expansion valve 7, the expanded refrigerant enters a direct expansion precooling coil pipe 8, the refrigerant exchanges heat with fresh air through the direct expansion precooling coil pipe 8 to precool and cool the fresh air, the refrigerant after being evaporated and absorbed heat is mixed with the refrigerant after passing through a fourth electromagnetic valve 9 and then expanding through a second expansion, the refrigerant after the evaporation and heat exchange in the evaporator 11 is connected to the air suction port of the compressor 1 through a pipeline to finish the refrigeration cycle of the heat pump system, and the opening degree of the first electromagnetic valve 2 and the second electromagnetic valve 3 is controlled by the outlet temperature of the regenerated solution of the condenser 5; the opening degrees of the third electromagnetic valve 6 and the third electromagnetic valve 6 are controlled by the outlet temperature of the humidifying solution of the evaporator 5;
solution regeneration system: a regeneration solution collecting tank 15 in the system is connected with an inlet of a regeneration solution pump 12 through a pipeline, an outlet of the regeneration solution pump 12 is connected with a solution inlet of a condenser 5, and a regeneration solution outlet of the condenser 5 is connected with a regeneration spray pipe 13 through a pipeline; a regeneration solution pump 12 extracts a regeneration solution from a regeneration solution tank 15, the regeneration solution is pressurized and then conveyed into a condenser 5 through a pipeline to exchange heat with a refrigerant, the regeneration solution after heat exchange and temperature rise is conveyed to a regeneration spray pipe 13 through a pipeline, the regeneration solution is uniformly sprayed on a regeneration solution wet film filler 14 through the regeneration spray pipe 13, the regeneration solution forms a liquid film on a regeneration solution wet film seasoning 14 to exchange heat with exhaust air, the moisture in the regeneration solution is taken away through the regeneration exhaust air to achieve the effect of solution concentration and regeneration, and the concentrated and regenerated solution flows back into the regeneration solution tank 15 through self gravity to enter the next solution regeneration cycle; the return air is with the refrigerant heat transfer when condensation heat recovery coil pipe 4, and the cold volume of return air reduces condensation temperature is retrieved to the refrigerant, and the return air absorbs the refrigerant heat and improves the temperature of airing exhaust, and the moisture of regeneration solution release is taken away when the regeneration module is aired exhaust to the high temperature, and the high temperature of mixing is high moist gas and is arranged outdoor solution regeneration effect that reaches.
A solution humidity control system: the humidifying solution collecting tank 19 in the system is connected with an inlet of a humidifying solution pump 16 through a pipeline, an outlet of the humidifying solution pump 16 is connected with a solution inlet of the evaporator 11, and an outlet of the humidifying solution of the evaporator 11 is connected with a humidifying spray pipe 17 through a pipeline; the humidity control solution pump 16 extracts humidity control solution from the humidity control solution tank 19, the humidity control solution is conveyed into the evaporator 11 through a pipeline after being pressurized to exchange heat with a low-temperature refrigerant, the humidity control solution after being evaporated and cooled is conveyed to the humidity control spray pipe 17 through a pipeline, the humidity control spray pipe 17 uniformly sprays the humidity control solution on the humidity control solution wet film filler 18, outdoor fresh air is pre-cooled through the direct expansion pre-cooling coil 8 and then contacts with the humidity control solution wet film filler 18 and the humidity control solution, the humidity control solution forms a liquid film on the humidity control solution wet film filler 18 to regulate humidity of the fresh air after being cooled and pretreated, moisture in fresh air is absorbed, the pre-cooled and humidity-controlled fresh air reaches an air supply state point and then is conveyed indoors, and the solution which absorbs the moisture and becomes dilute returns to the humidity control solution tank 19 through self gravity.
As shown in fig. 2, in a humidified state in winter, the four-way valve of the refrigeration system in winter converts the flow direction of the refrigerant to change, a fresh air humidifying and air supplying channel is composed of a direct expansion precooling and preheating coil 8, a humidifying solution wet film filler 18, a humidifying solution spray pipe 17 and a humidifying solution collecting tank 19, fresh air dried at low temperature in winter enters the humidifying and air supplying channel and is preheated by the fresh air passing through the direct expansion precooling and preheating coil 8, the preheated fresh air is humidified by the humidifying solution wet film filler 18, the fresh air is supplied to the room after being humidified to meet the air supplying requirement, high-temperature refrigerant compressed by a compressor 1 is delivered to the precooling and preheating coil 8 through a first outlet of an outlet tee joint of the compressor to preheat the fresh air, refrigerant preheating the fresh air and refrigerant of a second outlet tee joint of the compressor are then merged into a condenser, the refrigerant exchanges heat with the humidifying solution in the condenser, and, the salt solution is uniformly sprayed on the humidity-controlling solution wet film filler 18 through a humidity-controlling solution spraying pipe 17, the heated salt solution releases moisture to the fresh air, the preheated fresh air is subjected to humidity control, the requirements of preheating and humidity control of the fresh air in winter are met, and the fresh air is delivered indoors after the humidity control meets the air supply requirement;
a return air heat recovery channel is formed by a condensation heat recovery coil pipe 4, a regeneration solution wet film filler 14, a regeneration solution spray pipe 13 and a regeneration solution collecting tank 15, an outlet of a condenser 5 is closed by a second outlet electromagnetic valve four 9, all refrigerants are conveyed to the condensation heat recovery coil pipe 4 through a first outlet, return air exchanges heat with the refrigerants when passing through the heat recovery coil pipe, the refrigerants fully absorb return air heat, the evaporation temperature is improved by utilizing the return air heat, the refrigerants after heat exchange enter an evaporator 5 to exchange heat with the solution, the refrigerants after heat exchange return to a compressor 1 through a pipeline to enter the next cycle, the solution after evaporation and heat exchange is uniformly sprayed onto the regeneration wet film filler 14 through the regeneration spray pipe 13 in the regeneration spray pipe 13 conveyed by a regeneration solution pump 12, the moisture in the return air is continuously recovered, and the saline solution absorbing the moisture returns to the regeneration solution collecting tank 15 by self gravity to enter the next cycle, the return air with the recovered heat carries away the evaporated cold quantity and discharges the cold quantity to the outside; the refrigerating system cross valve conversion refrigerant flow direction changes under the operating mode winter, utilizes summer condensation heat extraction to preheat the new trend, utilizes the regenerated solution to carry out the humidifying to the new trend after preheating, utilizes the evaporation precooling in summer to retrieve the moisture in return air heat and the return air, improves heat pump system evaporating temperature, accomplishes the total heat recovery and improves the whole efficiency of unit.
As shown in fig. 3, when the humidity control effect is large and the first-stage device cannot meet the requirement, the two devices can work together in a grading manner, taking the working condition in summer as an example, fresh air is firstly cooled by the two-stage direct expansion precooling preheating coil 8, then humidity control is performed by the two-stage humidity control module, return air is firstly cooled by the two-stage condensation heat recovery coil 4, the cold quantity of the return air is recovered, then moisture in the regeneration solution is taken away by the two-stage regeneration module and discharged outdoors, and the solution regeneration effect is achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a direct expansion formula temperature and humidity divides accuse heat recovery solution humidifying fresh air handling unit which characterized in that: the system comprises a direct expansion type heat pump system, a condensate solution regeneration system, a direct expansion evaporation solution humidifying system, a return air heat recovery solution regeneration exhaust channel and a fresh air direct expansion precooling humidifying air supply channel, wherein the direct expansion type heat pump system comprises: the direct expansion type heat pump system is formed by connecting a compressor 1, a condensation heat recovery coil 4, a condenser 5, an expansion valve 7, a direct expansion precooling preheating coil 8 and an evaporator 11 through pipelines; the condensate solution regeneration system is formed by connecting a regeneration solution pump 12, a condenser 5, a regeneration solution spray pipe 13, a regeneration solution wet film filler 14 and a regeneration solution collecting tank 15 through pipelines; a direct expansion fresh air precooling and preheating solution humidifying system which is formed by connecting a humidifying solution pump 16, an evaporator 11, a humidifying solution spray pipe 17, a humidifying solution wet film filler 18 and a humidifying solution collecting tank 19 through pipelines; a wind return heat recovery solution regeneration exhaust channel is formed by the direct expansion heat recovery coil pipe 4, a regeneration solution wet film filler 14, a regeneration solution spray pipe 13 and a regeneration solution collecting tank 15; a fresh air direct-expansion pre-cooling humidifying air supply channel is formed by a condensation pre-cooling preheating coil 8, a humidifying solution wet film filler 18, a humidifying solution spray pipe 17 and a humidifying solution collecting tank 19.
2. The direct-expansion temperature and humidity control heat recovery solution humidity control fresh air handling unit as claimed in claim 1, wherein: the direct expansion type heat pump system comprises a compressor 1, a first electromagnetic valve 2, a condensation heat recovery coil pipe 4, a second electromagnetic valve 3, a condenser 5, a third electromagnetic valve 6, a first expansion valve 7, a direct expansion precooling preheating coil pipe 8, a fourth electromagnetic valve 9, a second expansion valve 10 and an evaporator 11 which are connected through pipelines, bypass pipes are arranged at the front end of the condensation heat recovery coil pipe 4 and the front end of the condenser 5, and the first electromagnetic valve 2 and the second electromagnetic valve 3 are respectively and additionally arranged on the bypass pipes at the front end of the heat recovery coil pipe 4 and the front end of the condenser 5 in the condensation heat recovery coil pipe 4; a bypass pipe is arranged at the front end of the direct expansion precooling preheating coil 8 and the front end of the evaporator 11, and a solenoid valve III 6, a solenoid valve IV 9, an expansion valve I7 and an expansion valve II 10 are respectively additionally arranged at the front end of the direct expansion precooling preheating coil 8 and the bypass pipe; the direct expansion type heat pump system is connected by a pipeline, the pipeline is filled with refrigerant, and a condensation heat recovery coil 4 and a direct expansion precooling coil 8 are additionally arranged below the direct expansion precooling coil 8 and the condensation coil.
3. The direct-expansion temperature and humidity control heat recovery solution humidity control fresh air handling unit as claimed in claim 1, wherein: the condensate solution regeneration system is formed by connecting a regeneration solution pump 12, a condenser 5, a regeneration solution spray pipe 13, a regeneration solution wet film filler 14 and a regeneration solution collecting tank 15 through a pipeline; the solution regeneration system is connected with an inlet of a regeneration solution pump 12 through a regeneration solution collecting tank 15, an outlet of the regeneration solution pump 12 is connected with an inlet of a solution of a condenser 5, an outlet of the solution of the condenser 5 is connected with a regeneration spray pipe 13, the regeneration spray pipe 13 sprays the regeneration solution on a regeneration solution wet film filler 14 to form a liquid film, and the liquid returns to the regeneration solution collecting tank 15 by utilizing the self gravity of the solution to complete the circulation of the condensation solution regeneration system.
4. The direct-expansion temperature and humidity control heat recovery solution humidity control fresh air handling unit as claimed in claim 1, wherein: the direct expansion evaporation solution humidity control system is a solution humidity control system formed by connecting a humidity control solution pump 16, an evaporator 11, a humidity control solution spray pipe 17, a humidity control solution wet film filler 18 and a humidity control solution collecting tank 19 through pipelines; in the solution humidity control system, a humidity control solution collecting tank 19 is connected with an inlet of a humidity control solution pump 16, an outlet of the humidity control solution pump 16 is connected with a solution inlet of an evaporator 11, a solution outlet of the evaporator 11 is connected with a humidity control spray pipe 17, the humidity control spray pipe 17 sprays humidity control solution on a humidity control solution wet film filler 18 to form a liquid film, and the liquid returns to the humidity control solution collecting tank 19 by utilizing the self gravity of the solution to complete the circulation of the direct expansion evaporation solution humidity control system.
5. The direct-expansion temperature and humidity control heat recovery solution humidity control fresh air handling unit as claimed in claims 1, 2 and 3, wherein: the return air heat recovery solution regeneration exhaust channel consists of a condensation heat recovery coil pipe 4, a regeneration solution wet film filler 14, a regeneration solution spray pipe 13 and a regeneration solution collecting tank 15; the regeneration solution is conveyed to the regeneration solution spraying pipe 13 through the regeneration solution pump 12 through a pipeline, the regeneration solution spraying pipe 13 is uniformly sprayed on the regeneration solution wet film filler 14 to form a liquid film, indoor return air passes through the condensation heat recovery coil pipe 4 and then contacts with the regeneration solution wet film filler 14 and the regeneration solution, the condensation heat of the heat pump system and the moisture released by the regeneration solution are taken away and discharged outdoors, and outdoor fresh air can be adopted to replace the return air for solution regeneration when the indoor return air regeneration is not performed.
6. The direct-expansion temperature-humidity-control heat-recovery-solution humidity-control fresh air unit as claimed in claims 1, 2 and 4, wherein the fresh air direct-expansion pre-cooling humidity-control air supply channel is composed of a condensation pre-cooling preheating coil 8, a humidity-control-solution wet film seasoning 18, a humidity-control-solution spray pipe 17 and a humidity-control-solution collecting tank 19; the humidity-controlling solution is conveyed to the humidity-controlling solution spraying pipe 17 through a pipeline by the humidity-controlling solution pump 16, the humidity-controlling solution is uniformly sprayed onto the humidity-controlling solution wet film packing 18 by the humidity-controlling solution spraying pipe 17 to form a liquid film, outdoor fresh air is pre-cooled and preheated by the condensation pre-cooling preheating coil 8 and then contacts with the humidity-controlling solution when passing through the humidity-controlling solution wet film packing 18, the fresh air is pre-cooled and preheated, and the fresh air is sent to the indoor after being subjected to humidity control to meet the requirement of an air supply state.
7. The direct-expansion temperature-humidity-control heat-recovery-solution-humidity-control fresh air handling unit as claimed in claim 1, wherein the condensation heat recovery coil and the direct-expansion pre-cooling and preheating coil are both fin-type and are respectively disposed at a return air inlet side and a fresh air inlet side: and a condensing coil water condensation disc 21 and a straight expansion coil water condensation disc 20 are respectively arranged below the condensing heat recovery coil 4 and the straight expansion pre-cooling coil 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404199.3A CN110986207A (en) | 2019-12-31 | 2019-12-31 | Heat pump driven direct-expansion type temperature-humidity separate heat control recovery type solution humidity conditioning fresh air handling unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911404199.3A CN110986207A (en) | 2019-12-31 | 2019-12-31 | Heat pump driven direct-expansion type temperature-humidity separate heat control recovery type solution humidity conditioning fresh air handling unit |
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| CN110986207A true CN110986207A (en) | 2020-04-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998602A (en) * | 2020-08-12 | 2020-11-27 | 北京华创瑞风空调科技有限公司 | Solution dehumidifier and control method thereof |
| CN112432240A (en) * | 2020-12-21 | 2021-03-02 | 孙毅民 | Fresh air conditioner and water heater integrated device |
| CN113108386A (en) * | 2021-04-30 | 2021-07-13 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN115751447A (en) * | 2022-09-17 | 2023-03-07 | 孙毅民 | Water circulation filter fresh air conditioner |
-
2019
- 2019-12-31 CN CN201911404199.3A patent/CN110986207A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998602A (en) * | 2020-08-12 | 2020-11-27 | 北京华创瑞风空调科技有限公司 | Solution dehumidifier and control method thereof |
| CN112432240A (en) * | 2020-12-21 | 2021-03-02 | 孙毅民 | Fresh air conditioner and water heater integrated device |
| CN113108386A (en) * | 2021-04-30 | 2021-07-13 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN113108386B (en) * | 2021-04-30 | 2022-08-16 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN115751447A (en) * | 2022-09-17 | 2023-03-07 | 孙毅民 | Water circulation filter fresh air conditioner |
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Application publication date: 20200410 |