CN102798202B - Total heat exchanger and fresh air handling unit system - Google Patents
Total heat exchanger and fresh air handling unit system Download PDFInfo
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- CN102798202B CN102798202B CN201210273260.7A CN201210273260A CN102798202B CN 102798202 B CN102798202 B CN 102798202B CN 201210273260 A CN201210273260 A CN 201210273260A CN 102798202 B CN102798202 B CN 102798202B
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Abstract
The invention discloses a total heat exchanger and a fresh air handling unit system. The total heat exchanger comprises moisture absorption grains, cooling medium channel pipes, shunt pipes and a screen mesh, wherein the shunt pipes are symmetrically distributed on the two ends of the total heat exchanger along a longitudinal direction, and multiple cooling medium channel pipes are formed on the total heat exchanger along the longitudinal direction; each cooling medium channel pipe is respectively communicated with the corresponding shunt pipe, and the gap of each cooling medium channel is divided into multiple independent spaces by screen mesh in a horizontal direction; and the moisture absorption grains are filled in the separate independent spaces in a porous medium form. By the total heat exchanger and the fresh air handling unit system provided by the invention, the dehumidification and humidification performances of an air conditioner are enhanced and the operating efficiency of the air conditioner is improved.
Description
Technical field
The present invention relates to air-conditioning technical, particularly relate to a kind of total-heat exchanger and Fresh air handling units system.
Background technology
Along with improving constantly of people's living standard, under inhabitation and office work environment, by the system of installing an air-conditioner, in order to promote the comfortableness of inhabitation and working environment, become the important selection that people improve comfortableness demand.Wherein, multi-gang air-conditioner technology due to have control free, energy-efficient, be convenient to the advantages such as installation and maintenance, be an important directions of Air-conditioning Development.
Multi-online air-conditioning system generally comprises one or more off-premises station, one or more indoor set and line control machine, and line control machine is connected with indoor set, and indoor set is connected with off-premises station again.Off-premises station is generally made up of outdoor heat exchanger, compressor and other refrigeration annex; Indoor set is made up of blower fan and heat exchanger etc., compared with multiple stage domestic air conditioning, the off-premises station of multi-online air-conditioning system shares, effectively can reduce equipment cost, and the centralized management of each indoor set can be realized, indoor set can be started separately run, also can multiple stage indoor set startup optimization simultaneously, make to control more flexible.
When adopting multi-online air-conditioning system to carry out air-treatment, in order to realize indoor fresh air ventilating, return air cold (heat) recovery and dehumidifying (humidification) function, to meet the diversified demand of user, first wind pushing temperature is down to below air dew point, to reduce air humidity, adopt Electric heating to raise wind pushing temperature again, then send into indoor, to meet human comfort requirement.But this air-treatment mode, on the one hand, wind pushing temperature excessively reduces the refrigeration duty that can increase multi-online air-conditioning system, and wasted work is increased, cooling system hydraulic performance decline; On the other hand, adopt electrical heating to heat up, adds additional power consumption again.
In order to reduce multi-online air-conditioning system wasted work, improve cooling system performance, prior art proposes one and improves one's methods, namely in the indoor set part of multi-online air-conditioning system, by increasing total-heat exchanger, total-heat exchanger is generally the air regenerating device containing Total heat exchange core body, and Total heat exchange core body is mutually superposed with Total heat exchange paper by orthogonal air duct, cohere, processed.Outdoor new wind and indoor return air carry out heat and mass exchange in total-heat exchanger, realize the object of fresh air dehumidification cooling in summer and new wind humidification intensification in winter, like this, reclaim return air heat by total-heat exchanger, effectively can reduce the energy consumption of system, the refrigeration performance of elevator system.But there is pressure reduction in the steam partial pressure in the new wind in the outdoor of total-heat exchanger and indoor exhaust wind, water vapour carries out mass transfer by the moisture-inhibiting paper of core body between new wind and return air, the moisture-inhibiting capacity of its internal paper heat and mass ability of total-heat exchanger, simultaneously, due to which mass transfer ability and finite rate, therefore, dehumidifying and the humidification capability of total-heat exchanger is limited, cause dehumidify summer and winter humidification capability not enough, reduce the operational efficiency of air-conditioning.
Summary of the invention
Embodiments of the invention provide a kind of total-heat exchanger, promote the dehumidifying of air-conditioning, humidifying performance, improve the operational efficiency of air-conditioning.
Embodiments of the invention also provide a kind of Fresh air handling units system, promote the dehumidifying of air-conditioning, humidifying performance, improve the operational efficiency of air-conditioning.
For achieving the above object, a kind of total-heat exchanger that the embodiment of the present invention provides, comprising: moisture absorption particle, refrigerant passage pipe, isocon and silk screen, wherein,
Isocon is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe in a longitudinal direction, each refrigerant passage pipe is communicated with corresponding isocon respectively, each refrigerant passage ligament is divided into multiple separate space in a lateral direction by silk screen, fills moisture absorption particle in each separate space of separation with the form of porous media.
Refrigerant flows into the isocon of total-heat exchanger one end, and sequentially by the isocon of refrigerant passage pipe and the total-heat exchanger other end, flows out total-heat exchanger; Air enters total-heat exchanger one end from horizontal direction, flows through the space of filling moisture absorption particle, flows out total-heat exchanger by the total-heat exchanger other end.
Described refrigerant passage pipe comprises microchannel and copper pipe.
A kind of Fresh air handling units system based on total-heat exchanger, this Fresh air handling units system comprises: compressor, the first total-heat exchanger, electric expansion valve, the second total-heat exchanger, gas-liquid separator, four-way change-over valve, the first air compartment, the second air compartment, the 3rd air compartment and the 4th air compartment, wherein
Compressor one end is connected with the first end of four-way change-over valve, the compressor other end is connected with one end of gas-liquid separator, second end of four-way change-over valve is connected with one end of the first total-heat exchanger, the other end of the first total-heat exchanger is connected with one end of electric expansion valve, the other end of electric expansion valve is connected with one end of the second total-heat exchanger, the other end of the second total-heat exchanger is connected with the 3rd end of four-way change-over valve, and the 4th end of four-way change-over valve is connected with the other end of gas-liquid separator.
New wind enters the first total-heat exchanger via the 4th air compartment, after the heat exchange process of the first total-heat exchanger, enters the first air compartment, sends into indoor via the first air compartment;
Return air enters the second total-heat exchanger via the 3rd air compartment, after the heat exchange process of the second total-heat exchanger, enters the second air compartment, enters air via the second air compartment.
First total-heat exchanger is condenser, and the second total-heat exchanger is evaporimeter, and refrigerant enters four-way change-over valve from compressor, then enter condenser, then enter electric expansion valve, then enter evaporimeter, afterwards, again enter four-way change-over valve, be back to compressor finally by gas-liquid separator.
Encapsulation process is adopted between described first Fresh air handling units system half portion space, total-heat exchanger place and described second Fresh air handling units system half portion space, total-heat exchanger place.
First air compartment and the 3rd air compartment are positioned at Fresh air handling units system top, and the second air compartment and the 4th air compartment are positioned at Fresh air handling units system bottom, adopt encapsulation process between the first air compartment and the second air compartment, adopt encapsulation process between the 3rd air compartment and the 4th air compartment.
Comprise further: indoor air-supply passage, outdoor air exhaust passage, indoor return air passage and outdoor new wind passage, wherein,
Through outdoor, new wind passage enters the 4th air compartment to outdoor new wind, and the new wind that the first air compartment exports is sent into indoor by indoor air-supply passage;
Indoor return air enters the 3rd air compartment through indoor return air passage, and the return air that the second air compartment exports enters air by outdoor air exhaust passage.
Described indoor air-supply passage and described outdoor air exhaust passage are positioned at Fresh air handling units system the same side, and described indoor return air passage is positioned at the Fresh air handling units system side relative with indoor air-supply passage with described outdoor new wind passage.
Described first air compartment comprises: the first air-valve and the second air-valve that are opened in inner side;
Described second air compartment comprises: the 3rd air-valve and the 4th air-valve that are opened in inner side;
Described 3rd air compartment comprises: the tendencies valve and the 6th air-valve that are opened in inner side;
Described 4th air compartment comprises: the 7th air-valve and the Bafeng valve being opened in inner side.
Described total-heat exchanger comprises: moisture absorption particle, refrigerant passage pipe, isocon and silk screen, wherein,
Isocon is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe in a longitudinal direction, each refrigerant passage pipe is communicated with corresponding isocon respectively, each refrigerant passage ligament is divided into multiple separate space in a lateral direction by silk screen, fills moisture absorption particle in each separate space of separation with the form of porous media.
Described refrigerant passage pipe comprises microchannel and copper pipe.
Cooling in summer is dehumidified, within the time cycle of initial setting up, described first total-heat exchanger is evaporimeter, described second total-heat exchanger is condenser, first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are opened, and the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are closed;
Through outdoor, new wind passage enters the 4th air compartment to the new wind of outdoor high temperature high humidity, the first total-heat exchanger is flow through from bottom to up through Bafeng valve, the new wind-heat amount of refrigerant suction in first total-heat exchanger, simultaneously, water vapour in the new wind of moisture absorption granular absorption, new wind, by after the first total-heat exchanger, enters the first air compartment through the first air-valve, is sent into indoor by indoor air-supply passage;
The return air of indoor low temperature low humidity enters the 3rd air compartment through indoor return air passage, the second total-heat exchanger is flow through from top to bottom through tendencies valve, water vapour on moisture absorption particle evaporation drying under the high temperature conditions, cold in return air be condensed device reclaim, afterwards, return air enters the second air compartment through the 4th air-valve, enters air by outdoor air exhaust passage;
The time cycle that next is circularly set then, triggering four-way change-over valve commutates, first total-heat exchanger is converted to condenser, second total-heat exchanger is converted to evaporimeter, simultaneously, trigger and the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are opened, the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are closed;
Through outdoor, new wind passage enters the 4th air compartment to outdoor new wind, the second total-heat exchanger is flow through from bottom to up through the 7th air-valve, the new wind-heat amount of refrigerant suction in second total-heat exchanger, simultaneously, water vapour in the new wind of moisture absorption particulate absorbent, new wind is entered the first air compartment by after cool-down dehumidification through the second air-valve, then is sent into indoor by indoor air-supply passage;
Indoor return air enters the 3rd air compartment through indoor return air passage, the first total-heat exchanger is flow through from top to bottom through the 6th air-valve, under condenser hot conditions, water vapour on moisture absorption particle evaporation drying under the high temperature conditions, meanwhile, condenser reclaims the cold in return air, afterwards, return air enters the second air compartment through the 3rd air-valve, enters air by outdoor air exhaust passage.
For warming and humidifying in winter, within the time cycle of initial setting up, described first total-heat exchanger is evaporimeter, described second total-heat exchanger is condenser, second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are opened, and the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are closed;
Outdoor air flows through the second total-heat exchanger from bottom to up through the 7th air-valve, adsorb the condensed water of moisture absorption granular absorption in a upper cyclic process, cold-producing medium in second total-heat exchanger is to the air heat release flowed through, entered indoor air-supply passage by the air of warming and humidifying through the second air-valve, and then send into indoor;
Indoor return air flows through the first total-heat exchanger from top to bottom through the 6th air-valve, under the first total-heat exchanger cryogenic conditions, water vapour in moisture absorption granular absorption return air, and heat in refrigerant-recovery return air, return air after air heat humidity enters outdoor air exhaust passage, via outdoor air exhaust passage discharged to outdoor through the 3rd air-valve;
The time cycle that next is circularly set then, triggering four-way change-over valve commutates, first total-heat exchanger is converted to condenser, second total-heat exchanger is converted to evaporimeter, simultaneously, trigger and the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are opened, the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are closed;
Outdoor air flows through the first total-heat exchanger from bottom to up through Bafeng valve, adsorb the water vapour of moisture absorption granular absorption in a upper cyclic process, and by the refrigerant heat in the first total-heat exchanger, entered indoor air-supply passage by the air of warming and humidifying through the first air-valve, send into via indoor air-supply passage indoor;
Indoor return air flows through the second total-heat exchanger from top to bottom through tendencies valve, under the second total-heat exchanger cryogenic conditions, heat in refrigerant suction return air, simultaneously, water vapour in moisture absorption particulate absorbent return air, afterwards, return air enters outdoor air exhaust passage, via outdoor air exhaust passage discharged to outdoor through the 4th air-valve.
As seen from the above technical solution, a kind of total-heat exchanger that the embodiment of the present invention provides and Fresh air handling units system, total-heat exchanger comprises: moisture absorption particle, refrigerant passage pipe, isocon and silk screen, wherein, isocon is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe in a longitudinal direction, each refrigerant passage pipe is communicated with corresponding isocon respectively, each refrigerant passage ligament is divided into multiple separate space in a lateral direction by silk screen, moisture absorption particle is filled with the form of porous media in each separate space separated.Fresh air handling units system comprises: compressor, first total-heat exchanger, electric expansion valve, second total-heat exchanger, gas-liquid separator, four-way change-over valve, first air compartment, second air compartment, 3rd air compartment and the 4th air compartment, wherein, compressor one end is connected with the first end of four-way change-over valve, the compressor other end is connected with one end of gas-liquid separator, second end of four-way change-over valve is connected with one end of the first total-heat exchanger, the other end of the first total-heat exchanger is connected with one end of electric expansion valve, the other end of electric expansion valve is connected with one end of the second total-heat exchanger, the other end of the second total-heat exchanger is connected with the 3rd end of four-way change-over valve, 4th end of four-way change-over valve is connected with the other end of gas-liquid separator.Like this, due to moisture absorption particle at low ambient temperatures, the moisture in damp atmosphere can be absorbed fast, in high temperature environments, moisture is discharged in time to low humidity air, thus improve dehumidifying, the humidifying performance of air-conditioning, reclaim the heat in cold in summer return air or winter return air simultaneously, improve the operational efficiency of air-conditioning.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.Apparently, the accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is the structural representation of embodiment of the present invention total-heat exchanger.
Fig. 2 is the structural representation of embodiment of the present invention Fresh air handling units system.
Detailed description of the invention
Carry out clear, complete description below with reference to accompanying drawing to the technical scheme of various embodiments of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope that the present invention protects.
Existing total-heat exchanger passes through between new wind and return air through the heat and mass of Total heat exchange paper, in order to realize fresh air dehumidification cooling in summer and new wind humidification intensification in winter, because the moisture-inhibiting of Total heat exchange paper is limited in one's ability, have impact on the heat and mass ability of total-heat exchanger, meanwhile, dehumidifying and the humidification capability of total-heat exchanger is limited.In the embodiment of the present invention, a kind of novel total-heat exchanger is proposed, by filling moisture absorption particle in total-heat exchanger, make moisture absorption particle at low ambient temperatures, the moisture in damp atmosphere can be absorbed fast, in high temperature environments, discharge moisture in time to low humidity air, effectively improve mass transfer ability and the speed of total-heat exchanger, make system possess good dehumidifying and humidification capability.
Simultaneously, on the basis based on embodiment of the present invention total-heat exchanger, propose to carry out fresh-air ventilation to indoor, reclaim indoor return air cold (heat), (humidification) is dehumidified to indoor simultaneously, i.e. band dehumidifying in summer and return air cold recovery function, winter the Fresh air handling units system with humidification and return air heat recovery function, on the one hand, the indoor damp and hot load of part can be born, on the other hand, indoor dehumidification and humidification requirement can be met, to realize Summer Indoor fresh-air ventilation, return air cold recovery and dehumidifying, and, winter indoor fresh air ventilating, the function of return air heat recovery and humidification.Like this, simple and the combined and instant of Fresh air handling units system architecture, adopt the heat and mass unit of new structure, i.e. total-heat exchanger, by with other room air conditioner with the use of, reclaim the cold of return air or heat, realize dehumidifying in summer and ventilation, improve wind pushing temperature simultaneously, improve unit performance, system energy consumption is low, operational efficiency is high.
Fig. 1 is the structural representation of embodiment of the present invention total-heat exchanger.See Fig. 1, this total-heat exchanger comprises: moisture absorption particle (23), refrigerant passage pipe (24), isocon (25) and silk screen (26), wherein,
Isocon (25) is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe (24) in a longitudinal direction, each refrigerant passage pipe (24) is communicated with corresponding isocon (25) respectively, each refrigerant passage pipe (24) gap is divided into multiple separate space in a lateral direction by silk screen (26), fills moisture absorption particle (23) in each separate space of separation with the form of porous media.
Refrigerant (27) flows into the isocon (25) of total-heat exchanger one end, and flows into the isocon (25) of the other end by refrigerant passage pipe (24), flows out total-heat exchanger by the isocon (25) of the other end; Air (28) enters total-heat exchanger one end from horizontal direction, flows through the space of filling moisture absorption particle (23), flows out total-heat exchanger by the other end.Like this, in total-heat exchanger (heat and mass unit), by moisture absorption is therein particles filled, when air flows through porous moisture absorption particle, can by moisture absorption particulate absorbent or desorb water.
In the embodiment of the present invention, refrigerant passage pipe (24) is as the passage of flow of refrigerant heat exchange, and preferably, can adopt microchannel or copper pipe, namely refrigerant passage pipe comprises microchannel and copper pipe.In total-heat exchanger, the heat of cold-producing medium passes to total-heat exchanger ambient air by the refrigerant passage pipe arranged, and also first can pass to moisture absorption particle by refrigerant passage pipe, then carries out heat exchange through flowing through the circumgranular air of moisture absorption.
Preferably, refrigerant passage pipe (24) quantity of total-heat exchanger size, setting and the filling quality of moisture absorption particle (23) and porosity, by the heat exchange amount of Fresh air handling units system, comprehensively determine except (adding) moisture and crushing.Such as, if the heat exchange amount of Fresh air handling units system and except (adding) moisture larger, can improve setting refrigerant passage pipe (24) quantity and/or, moisture absorption particle (23) filling quality, simultaneously, suitably can also strengthen heat and mass unit size, to ensure that the porosity of moisture absorption particle (23) is not less than 55%, to avoid flowing crushing excessive.
Fig. 2 is the structural representation of embodiment of the present invention Fresh air handling units system.See Fig. 2, this Fresh air handling units system comprises: compressor (1), the first total-heat exchanger (2), electric expansion valve (3), the second total-heat exchanger (4), gas-liquid separator (5), four-way change-over valve (6), the first air compartment (11), the second air compartment (12), the 3rd air compartment (13) and the 4th air compartment (14), wherein
Compressor (1) one end is connected with the first end of four-way change-over valve (6), the other end is connected with the one end of gas-liquid separator (5), second end of four-way change-over valve (6) is connected with one end of the first total-heat exchanger (2), the other end of the first total-heat exchanger (2) is connected with one end of electric expansion valve (3), the other end of electric expansion valve (3) is connected with one end of the second total-heat exchanger (4), the other end of the second total-heat exchanger (4) is connected with the 3rd end of four-way change-over valve (6), 4th end of four-way change-over valve (6) is connected with the other end of gas-liquid separator (5).
In Fresh air handling units system, the circulation process of wind is:
New wind enters the first total-heat exchanger (2) via the 4th air compartment (14), after the heat exchange process of the first total-heat exchanger (2), enters the first air compartment (11), sends into indoor via the first air compartment (11);
Return air enters the second total-heat exchanger (4) via the 3rd air compartment (13), after the heat exchange process of the second total-heat exchanger (4), enters the second air compartment (12), enters air via the second air compartment (12).
In the embodiment of the present invention, the first total-heat exchanger (2) and the second total-heat exchanger (4) are changed by switching between evaporimeter and condenser of four-way change-over valve (6):
During cooling in summer dehumidifying, new wind flows through evaporimeter through the 4th air compartment (14), sends into indoor after cool-down dehumidification again through the first air compartment (11); Return air flows through condenser through the 3rd air compartment (13), makes moisture absorption granules regeneration and enters air through the second air compartment (12) again after recovery return air cold;
During winter heating's humidification, new wind flows through condenser through the 4th air compartment (14), sends into indoor after warming and humidifying again through the first air compartment (11); Return air flows through evaporimeter through the 3rd air compartment (13), absorbs water vapour in return air and enters air through the second air compartment (12) again after recovery heat.
The flowing flow process of refrigerant in Fresh air handling units system is:
Four-way change-over valve (6) is entered from compressor (1), then condenser (the first total-heat exchanger) is entered, enter electric expansion valve (3) again, then evaporimeter (the second total-heat exchanger) is entered, afterwards, again enter four-way change-over valve (6), be back to compressor (1) finally by gas-liquid separator (5).
In the embodiment of the present invention, adopt encapsulation process between Fresh air handling units system half portion space, first total-heat exchanger (2) place and Fresh air handling units system half portion space, the second total-heat exchanger (4) place, namely do not leak out between the first total-heat exchanger (2) and the second total-heat exchanger (4).
Preferably, first air compartment (11) and the 3rd air compartment (13) are positioned at Fresh air handling units system top, second air compartment (12) and the 4th air compartment (14) are positioned at Fresh air handling units system bottom, adopt encapsulation process between first air compartment (11) and the second air compartment (12), between the 3rd air compartment (13) and the 4th air compartment (14), adopt encapsulation process.That is, do not leak out between the first air compartment (11) and the second air compartment (12), also do not leak out between the 3rd air compartment (13) and the 4th air compartment (14).
Preferably, this Fresh air handling units system can also comprise: indoor air-supply passage (7), outdoor air exhaust passage (8), indoor return air passage (9) and outdoor new wind passage (10), wherein,
Through outdoor, new wind passage (10) enters the 4th air compartment (14) to outdoor new wind, and the new wind that the first air compartment (11) exports is sent into indoor by indoor air-supply passage (7);
Indoor return air enters the 3rd air compartment (13) through indoor return air passage (9), and the return air that the second air compartment (12) exports enters air by outdoor air exhaust passage (8).
In the embodiment of the present invention, indoor air-supply passage (7) and outdoor air exhaust passage (8) are positioned at Fresh air handling units system the same side, and indoor return air passage (9) and outdoor new wind passage (10) are positioned at the Fresh air handling units system side relative with indoor air-supply passage (7).
Wherein,
First air compartment (11) comprising: the first air-valve (15) and the second air-valve (16) that are opened in inner side;
Second air compartment (12) comprising: the 3rd air-valve (17) and the 4th air-valve (18) that are opened in inner side;
3rd air compartment (13) comprising: the tendencies valve (19) and the 6th air-valve (20) that are opened in inner side;
4th air compartment (14) comprising: the 7th air-valve (21) and the Bafeng valve (22) being opened in inner side.
In the embodiment of the present invention, preferably, first air-valve (15) is parallel with the position of the second air-valve (16), 3rd air-valve (17) is parallel with the position of the 4th air-valve (18), tendencies valve (19) is parallel with the position of the 6th air-valve (20), and the 7th air-valve (21) is parallel with the position of Bafeng valve (22).
That is, indoor air-supply passage (7) is connected with the first air compartment (11), and the first air compartment (11) inner side offers the first air-valve (15) and the second air-valve (16); Outdoor air exhaust passage (8) is connected with the second air compartment (12), and the second air compartment (12) inner side has the 3rd air-valve (17) and the 4th air-valve (18); Indoor return air passage (9) is connected with the 3rd air compartment (13), and the 3rd air compartment (13) inner side has tendencies valve (19) and the 6th air-valve (20); Outdoor new wind passage (10) is connected with the 4th air compartment (14), and the 4th air compartment (14) inner side has the 7th air-valve (21) and Bafeng valve (22).
The structure of the first total-heat exchanger is identical with the structure of the second total-heat exchanger, comprising: moisture absorption particle (23), refrigerant passage pipe (24), isocon (25) and silk screen (26), wherein,
Isocon (25) is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe (24) in a longitudinal direction, each refrigerant passage pipe (24) is communicated with corresponding isocon (25) respectively, each refrigerant passage pipe (24) gap is divided into multiple separate space in a lateral direction by silk screen (26), moisture absorption particle (23) is filled with the form of porous media in each separate space separated, refrigerant flows into the isocon (25) of total-heat exchanger one end, and flowed out by the isocon (25) of refrigerant passage pipe (24) from the other end, total-heat exchanger is flowed out by the isocon (25) of the other end, air enters total-heat exchanger one end from horizontal direction, flows through the space of filling moisture absorption particle (23), flows out total-heat exchanger by the other end.
Preferably, refrigerant passage pipe (24) can adopt microchannel or copper pipe.
In the embodiment of the present invention, the four-way change-over valve (6) of Fresh air handling units system according to the functional status of time cycle exchange-column shift first total-heat exchanger (2) pre-set with the second total-heat exchanger (4), even if the first total-heat exchanger (2) and the second total-heat exchanger (4) exchange-column shift between evaporimeter and condenser.That is, control four-way change-over valve, two heat and mass unit can be made to switch between evaporimeter and condenser, realize the continuous operation of system, meanwhile, by combining the open and close of air-valve, when can realize cooling in summer dehumidifying, outdoor new wind flows through evaporimeter through the 4th air compartment, sends into indoor after cool-down dehumidification again through the first air compartment; Indoor return air flows through condenser through the 3rd air compartment, makes heat and mass regeneration unit and enters outdoor through the second air compartment again after recovery return air cold.During winter heating's humidification, the new wind in outdoor flows through condenser through the 4th air compartment, and send into indoor after warming and humidifying again through the first air compartment, indoor return air flows through evaporimeter through the 3rd air compartment, absorbs water vapour in return air and enters outdoor through the second air compartment again after recovery heat.
In heat and mass unit (total-heat exchanger), the cold-producing medium in refrigerant passage pipe and air carry out exchange heat, to cool air or to heat; The moisture absorption particle of loose structure and water vapor in air carry out mass transfer exchange, to dehumidify or humidification to air.
Again the operation principle of embodiment of the present invention Fresh air handling units system is described in detail below.
(1) cooling in summer dehumidifying
Within the time cycle of initial setting up, using the first total-heat exchanger (2) as evaporimeter, the second total-heat exchanger (4) as condenser, first air-valve (15), the 4th air-valve (18), tendencies valve (19) and Bafeng valve (22) are opened, and the second air-valve (16), the 3rd air-valve (17), the 6th air-valve (20) and the 7th air-valve (21) are closed.
Through outdoor, new wind passage (10) enters the 4th air compartment (14) to the new wind of outdoor high temperature high humidity, the first total-heat exchanger (2) is flow through from bottom to up through Bafeng valve (22), cold-producing medium (refrigerant) in first total-heat exchanger (2) absorbs new wind-heat amount, simultaneously, moisture absorption particle (23) adsorbs the water vapour in new wind, new wind is dehumidified, new wind passes through the first total-heat exchanger (2) by after cool-down dehumidification, enter the first air compartment (11) through the first air-valve (15), sent into by indoor air-supply passage (7) indoor;
The return air of indoor low temperature low humidity enters the 3rd air compartment (13) through indoor return air passage (9), the second total-heat exchanger (4) is flow through from top to bottom through tendencies valve (19), under the hot conditions of condenser, water vapour evaporation drying under the high temperature conditions on moisture absorption particle (23), thus realize regeneration, moisture absorption particle (23) is made again to possess the ability absorbing water vapour, during with the time cycle of circulating at next, when switching uses as evaporimeter, for adsorbing the water vapour in new wind, cold in return air is used for cooler condenser, cold be condensed device reclaim, afterwards, return air enters the second air compartment (12) through the 4th air-valve (18), air is entered by outdoor air exhaust passage (8).
Within this time cycle, in first total-heat exchanger (2), moisture absorption particle (23) adsorbs the water vapour in new wind, quality increases, in second total-heat exchanger (4), the water vapour that moisture absorption particle (23) adsorbs through high temperature drying, Mass lost, again possess the ability absorbing water vapour, thus realize regeneration.
The time cycle that next is circularly set then, trigger four-way change-over valve (6) commutation, switch the connecting path of the first total-heat exchanger (2) and the second total-heat exchanger (4), condenser is converted to by the first total-heat exchanger (2), second total-heat exchanger (4) is converted to evaporimeter, simultaneously, trigger and the second air-valve (16), the 3rd air-valve (17), the 6th air-valve (20) and the 7th air-valve (21) are opened, the first air-valve (15), the 4th air-valve (18), tendencies valve (19) and Bafeng valve (22) are closed.
Through outdoor, new wind passage (10) enters the 4th air compartment (14) to the new wind of outdoor high temperature high humidity, the second total-heat exchanger (4) is flow through from bottom to up through the 7th air-valve (21), the new wind-heat amount of refrigerant suction in second total-heat exchanger (4), simultaneously, moisture absorption particle (23) absorbs the water vapour in new wind, new wind is entered the first air compartment (11) by after cool-down dehumidification through the second air-valve (16), then is sent into indoor by indoor air-supply passage (7);
The return air of indoor low temperature low humidity enters the 3rd air compartment (13) through indoor return air passage (9), the first total-heat exchanger (2) is flow through from top to bottom through the 6th air-valve (20), under condenser (the first total-heat exchanger) hot conditions, water vapour evaporation drying under the high temperature conditions on moisture absorption particle (23), thus make moisture absorption particle (23) again possess the ability absorbing water vapour, moisture absorption particle (23) is reproduced, simultaneously, condenser reclaims the cold in return air, afterwards, return air enters the second air compartment (12) through the 3rd air-valve (17), air is entered by outdoor air exhaust passage (8).
Like this, the ensuing time cycle then, four-way change-over valve (6) is triggered again, perform switch operation, make that the first total-heat exchanger (2) is evaporimeter, the second total-heat exchanger (4) is condenser, circulation like this, carry out fresh-air ventilation by indoor, reclaim indoor return air cold (heat), simultaneously, (humidification) is dehumidified to indoor, thus realize the function of refrigerated dehumidification, meet indoor dehumidification and humidification requirement, improve Fresh air handling units systematic function, reduce Fresh air handling units system energy consumption, improve the operational efficiency of air-conditioning; And the continuous operation of fresh-air ventilation in summer, return air cold recovery and dehumidifying can be realized, realize the continuous operation of the fresh-air ventilation in winter, return air heat recovery and humidification, Fresh air handling units system architecture is compact and performance is high, simple and the combined and instant of Novel heat transfer mass transfer unit structure, thus meet the demand of user to comfortableness.
(2) winter heating's dehumidifying
Within the time cycle of initial setting up, using the first total-heat exchanger (2) as evaporimeter, and the second total-heat exchanger (4) is as condenser, second air-valve (16), the 3rd air-valve (17), the 6th air-valve (20) and the 7th air-valve (21) are opened, and the first air-valve (15), the 4th air-valve (18), tendencies valve (19) and Bafeng valve (22) are closed.
Outdoor air flows through the second total-heat exchanger (4) from bottom to up through the 7th air-valve (21), adsorb the condensed water that in a upper cyclic process, moisture absorption particle (23) adsorbs in the second total-heat exchanger (4), moisture absorption particle (23) is made again to possess the ability absorbing water vapour, thus regeneration, cold-producing medium in second total-heat exchanger (4) is to the air heat release flowed through, entered indoor air-supply passage (7) by the air of warming and humidifying through the second air-valve (16), and then send into indoor;
Indoor return air flows through the first total-heat exchanger (2) from top to bottom through the 6th air-valve (20), under the first total-heat exchanger (evaporimeter) cryogenic conditions, water vapour in moisture absorption particle (23) absorption return air, and heat in refrigerant-recovery return air, return air after air heat humidity enters outdoor air exhaust passage (8) through the 3rd air-valve (17), enters outdoor via outdoor air exhaust passage (8).
Within this time cycle, in first total-heat exchanger (2), water vapour in moisture absorption particle (23) absorption return air, quality increases, in second total-heat exchanger (4), the water vapour that moisture absorption particle (23) adsorbs adsorbs through low-humidity air, Mass lost, again possess the ability absorbing water vapour, thus realize regeneration.
The time cycle that next is circularly set then, trigger four-way change-over valve (6) commutation, first total-heat exchanger (2) is converted to condenser, second total-heat exchanger (4) is converted to evaporimeter, simultaneously, trigger and the first air-valve (15), the 4th air-valve (18), tendencies valve (19) and Bafeng valve (22) are opened, the second air-valve (16), the 3rd air-valve (17), the 6th air-valve (20) and the 7th air-valve (21) are closed.
Outdoor air flows through the first total-heat exchanger (2) from bottom to up through Bafeng valve (22), adsorb the water vapour that in a upper cyclic process, moisture absorption particle (23) adsorbs in the first total-heat exchanger (2), make moisture absorption particle (23) again possess the ability absorbing water vapour, make it regenerate; Meanwhile, air, by the refrigerant heat in the first total-heat exchanger (2), is entered indoor air-supply passage (7) by the air of warming and humidifying through the first air-valve (15), sends into indoor via indoor air-supply passage (7);
Indoor return air flows through the second total-heat exchanger (4) from top to bottom through tendencies valve (19), under the second total-heat exchanger (evaporimeter) cryogenic conditions, heat in refrigerant suction return air in evaporimeter, simultaneously, moisture absorption particle (23) absorbs the water vapour in return air, afterwards, return air enters outdoor air exhaust passage (8), via outdoor air exhaust passage (8) discharged to outdoor through the 4th air-valve (18).
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if belong within the scope of the claims in the present invention and equivalent technologies thereof to these amendments of the present invention and modification, then the present invention also comprises these change and modification.
Claims (14)
1. a total-heat exchanger, is characterized in that, this total-heat exchanger comprises: moisture absorption particle, refrigerant passage pipe, isocon and silk screen, wherein,
Isocon is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe in a longitudinal direction, each refrigerant passage pipe is communicated with corresponding isocon respectively, each refrigerant passage ligament is divided into multiple separate space in a lateral direction by silk screen, fills moisture absorption particle in each separate space of separation with the form of porous media; Air enters total-heat exchanger one end from horizontal direction, flows through the space of filling moisture absorption particle, flows out total-heat exchanger by the total-heat exchanger other end.
2. total-heat exchanger according to claim 1, is characterized in that,
Refrigerant flows into the isocon of total-heat exchanger one end, and sequentially by the isocon of refrigerant passage pipe and the total-heat exchanger other end, flows out total-heat exchanger.
3. total-heat exchanger according to claim 1, is characterized in that, described refrigerant passage pipe comprises microchannel and copper pipe.
4. the Fresh air handling units system based on total-heat exchanger, it is characterized in that, this Fresh air handling units system comprises: compressor, the first total-heat exchanger, electric expansion valve, the second total-heat exchanger, gas-liquid separator, four-way change-over valve, the first air compartment, the second air compartment, the 3rd air compartment and the 4th air compartment, wherein
Compressor one end is connected with the first end of four-way change-over valve, the compressor other end is connected with one end of gas-liquid separator, second end of four-way change-over valve is connected with one end of the first total-heat exchanger, the other end of the first total-heat exchanger is connected with one end of electric expansion valve, the other end of electric expansion valve is connected with one end of the second total-heat exchanger, the other end of the second total-heat exchanger is connected with the 3rd end of four-way change-over valve, and the 4th end of four-way change-over valve is connected with the other end of gas-liquid separator;
First, second total-heat exchanger described comprises: moisture absorption particle, refrigerant passage pipe, isocon and silk screen, wherein,
Isocon is symmetrically distributed in total-heat exchanger two ends in a longitudinal direction, total-heat exchanger forms multiple refrigerant passage pipe in a longitudinal direction, each refrigerant passage pipe is communicated with corresponding isocon respectively, each refrigerant passage ligament is divided into multiple separate space in a lateral direction by silk screen, fills moisture absorption particle in each separate space of separation with the form of porous media; Air enters total-heat exchanger one end from horizontal direction, flows through the space of filling moisture absorption particle, flows out total-heat exchanger by the total-heat exchanger other end.
5. Fresh air handling units system according to claim 4, is characterized in that,
New wind enters the first total-heat exchanger via the 4th air compartment, after the heat exchange process of the first total-heat exchanger, enters the first air compartment, sends into indoor via the first air compartment;
Return air enters the second total-heat exchanger via the 3rd air compartment, after the heat exchange process of the second total-heat exchanger, enters the second air compartment, enters air via the second air compartment.
6. Fresh air handling units system according to claim 5, is characterized in that,
First total-heat exchanger is condenser, and the second total-heat exchanger is evaporimeter, and refrigerant enters four-way change-over valve from compressor, then enter condenser, then enter electric expansion valve, then enter evaporimeter, afterwards, again enter four-way change-over valve, be back to compressor finally by gas-liquid separator.
7. the Fresh air handling units system according to any one of claim 4 to 6, is characterized in that, adopts encapsulation process between described first Fresh air handling units system half portion space, total-heat exchanger place and described second Fresh air handling units system half portion space, total-heat exchanger place.
8. Fresh air handling units system according to claim 7, it is characterized in that, first air compartment and the 3rd air compartment are positioned at Fresh air handling units system top, second air compartment and the 4th air compartment are positioned at Fresh air handling units system bottom, adopt encapsulation process between first air compartment and the second air compartment, between the 3rd air compartment and the 4th air compartment, adopt encapsulation process.
9. Fresh air handling units system according to claim 8, is characterized in that, comprise further: indoor air-supply passage, outdoor air exhaust passage, indoor return air passage and outdoor new wind passage, wherein,
Through outdoor, new wind passage enters the 4th air compartment to outdoor new wind, and the new wind that the first air compartment exports is sent into indoor by indoor air-supply passage;
Indoor return air enters the 3rd air compartment through indoor return air passage, and the return air that the second air compartment exports enters air by outdoor air exhaust passage.
10. Fresh air handling units system according to claim 9, it is characterized in that, described indoor air-supply passage and described outdoor air exhaust passage are positioned at Fresh air handling units system the same side, and described indoor return air passage is positioned at the Fresh air handling units system side relative with indoor air-supply passage with described outdoor new wind passage.
11. Fresh air handling units systems according to claim 10, is characterized in that,
Described first air compartment comprises: the first air-valve and the second air-valve that are opened in inner side;
Described second air compartment comprises: the 3rd air-valve and the 4th air-valve that are opened in inner side;
Described 3rd air compartment comprises: the tendencies valve and the 6th air-valve that are opened in inner side;
Described 4th air compartment comprises: the 7th air-valve and the Bafeng valve being opened in inner side.
12. Fresh air handling units systems according to claim 11, is characterized in that, described refrigerant passage pipe comprises microchannel and copper pipe.
13. Fresh air handling units systems according to claim 12, is characterized in that,
Cooling in summer is dehumidified, within the time cycle of initial setting up, described first total-heat exchanger is evaporimeter, described second total-heat exchanger is condenser, first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are opened, and the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are closed;
Through outdoor, new wind passage enters the 4th air compartment to the new wind of outdoor high temperature high humidity, the first total-heat exchanger is flow through from bottom to up through Bafeng valve, the new wind-heat amount of refrigerant suction in first total-heat exchanger, simultaneously, water vapour in the new wind of moisture absorption granular absorption, new wind, by after the first total-heat exchanger, enters the first air compartment through the first air-valve, is sent into indoor by indoor air-supply passage;
The return air of indoor low temperature low humidity enters the 3rd air compartment through indoor return air passage, the second total-heat exchanger is flow through from top to bottom through tendencies valve, water vapour on moisture absorption particle evaporation drying under the high temperature conditions, cold in return air be condensed device reclaim, afterwards, return air enters the second air compartment through the 4th air-valve, enters air by outdoor air exhaust passage;
The time cycle that next is circularly set then, triggering four-way change-over valve commutates, first total-heat exchanger is converted to condenser, second total-heat exchanger is converted to evaporimeter, simultaneously, trigger and the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are opened, the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are closed;
Through outdoor, new wind passage enters the 4th air compartment to the new wind of outdoor high temperature high humidity, the second total-heat exchanger is flow through from bottom to up through the 7th air-valve, the new wind-heat amount of refrigerant suction in second total-heat exchanger, simultaneously, water vapour in the new wind of moisture absorption particulate absorbent, new wind is entered the first air compartment by after cool-down dehumidification through the second air-valve, then is sent into indoor by indoor air-supply passage;
The return air of indoor low temperature low humidity enters the 3rd air compartment through indoor return air passage, the first total-heat exchanger is flow through from top to bottom through the 6th air-valve, under condenser hot conditions, water vapour on moisture absorption particle evaporation drying under the high temperature conditions, meanwhile, condenser reclaims the cold in return air, afterwards, return air enters the second air compartment through the 3rd air-valve, enters air by outdoor air exhaust passage.
14. Fresh air handling units systems according to claim 12, is characterized in that,
For warming and humidifying in winter, within the time cycle of initial setting up, described first total-heat exchanger is evaporimeter, described second total-heat exchanger is condenser, second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are opened, and the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are closed;
Outdoor air flows through the second total-heat exchanger from bottom to up through the 7th air-valve, adsorb the condensed water of moisture absorption granular absorption in a upper cyclic process, cold-producing medium in second total-heat exchanger is to the air heat release flowed through, entered indoor air-supply passage by the air of warming and humidifying through the second air-valve, and then send into indoor;
Indoor return air flows through the first total-heat exchanger from top to bottom through the 6th air-valve, under the first total-heat exchanger cryogenic conditions, water vapour in moisture absorption granular absorption return air, and heat in refrigerant-recovery return air, return air after air heat humidity enters outdoor air exhaust passage, via outdoor air exhaust passage discharged to outdoor through the 3rd air-valve;
The time cycle that next is circularly set then, triggering four-way change-over valve commutates, first total-heat exchanger is converted to condenser, second total-heat exchanger is converted to evaporimeter, simultaneously, trigger and the first air-valve, the 4th air-valve, tendencies valve and Bafeng valve are opened, the second air-valve, the 3rd air-valve, the 6th air-valve and the 7th air-valve are closed;
Outdoor air flows through the first total-heat exchanger from bottom to up through Bafeng valve, adsorb the water vapour of moisture absorption granular absorption in a upper cyclic process, and by the refrigerant heat in the first total-heat exchanger, entered indoor air-supply passage by the air of warming and humidifying through the first air-valve, send into via indoor air-supply passage indoor;
Indoor return air flows through the second total-heat exchanger from top to bottom through tendencies valve, under the second total-heat exchanger cryogenic conditions, heat in refrigerant suction return air, simultaneously, water vapour in moisture absorption particulate absorbent return air, afterwards, return air enters outdoor air exhaust passage, via outdoor air exhaust passage discharged to outdoor through the 4th air-valve.
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| CN105423793A (en) * | 2015-12-22 | 2016-03-23 | 叶立英 | Method and system for efficient total heat recovery and for compounding total heat recovery system with external heat energy system |
| CN106322538A (en) * | 2016-10-31 | 2017-01-11 | 广东美的制冷设备有限公司 | Water-free humidifying air conditioner and humidifying method |
| CN106322537A (en) * | 2016-10-31 | 2017-01-11 | 广东美的制冷设备有限公司 | Waterfree humidification air conditioner and humidification method |
| CN106989473B (en) * | 2017-05-19 | 2023-06-20 | 珠海格力电器股份有限公司 | Fresh air system |
| CN109186015A (en) * | 2018-08-13 | 2019-01-11 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
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| CN2297703Y (en) * | 1998-05-15 | 1998-11-18 | 诠旭电机股份有限公司 | Evaporative heat exchanger |
| CN101900384A (en) * | 2010-05-21 | 2010-12-01 | 南通华信中央空调有限公司 | Exhaust air heat recovery fresh air unit equipped with moisture absorption heat exchangers |
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| JP2008281281A (en) * | 2007-05-11 | 2008-11-20 | Japan Exlan Co Ltd | Sorption module and its manufacturing method |
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| CN2297703Y (en) * | 1998-05-15 | 1998-11-18 | 诠旭电机股份有限公司 | Evaporative heat exchanger |
| CN101900384A (en) * | 2010-05-21 | 2010-12-01 | 南通华信中央空调有限公司 | Exhaust air heat recovery fresh air unit equipped with moisture absorption heat exchangers |
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