CN113137777A - Air conditioning system with humidity control function - Google Patents
Air conditioning system with humidity control function Download PDFInfo
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- CN113137777A CN113137777A CN202110357516.1A CN202110357516A CN113137777A CN 113137777 A CN113137777 A CN 113137777A CN 202110357516 A CN202110357516 A CN 202110357516A CN 113137777 A CN113137777 A CN 113137777A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 239000003463 adsorbent Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 56
- 238000011084 recovery Methods 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 238000007791 dehumidification Methods 0.000 description 49
- 238000010586 diagram Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012621 metal-organic framework Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002131 composite material Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical class [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Chemical class 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
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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
- F24F13/02—Ducting arrangements
-
- 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
Abstract
The invention relates to the technical field of fresh air subsystems, and particularly provides an air conditioning system with a humidity control function, which comprises an air conditioning subsystem and a fresh air subsystem, wherein the air conditioning subsystem comprises a first pipeline corresponding to a low-pressure gaseous refrigerant and a second pipeline corresponding to a high-pressure gaseous refrigerant, and the fresh air subsystem comprises: 1) an air duct portion including an air duct having a first mode and a second mode, and 2) a refrigerant circulating portion including a heat exchanger unit including a first heat exchanger and a second heat exchanger and a switching unit; in this case, the configuration in which the adsorbent is mounted on at least a part of the surface of the first heat exchanger and at least a part of the surface of the second heat exchanger makes it possible to satisfy the humidity control requirement of the air conditioning system by matching the mode of the air duct and the state of the switching unit (the state of the adsorbent on the surface of the heat exchanger can be determined).
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioning system with a humidity control function.
Background
The working principle of the air conditioner is as follows: under the action of the indoor fan, a part of air in the indoor space is sucked into the shell through the air return opening and exchanges heat with the surface of the indoor heat exchanger, the temperature of the part of air is reduced/increased, then the part of air with the changed temperature is sent into the indoor space through the air supply opening again, and the process is repeated, so that the cold/heat generated by the phase change and the circular flow of the refrigerant can be gradually released into the indoor space. Although the conditioned air may satisfy the user's demand in terms of temperature, since the air in the indoor space is treated in the course of repeated cycles, the air quality of the indoor space tends to be degraded when the air conditioner is operated for a long duration. In consideration of the necessity of improving the air quality, a fresh air system is introduced on the basis of the air conditioner. The main functions of the fresh air system are as follows: the air in the indoor space is exchanged or partially exchanged with the air in the outdoor environment, so that the air in the indoor space is updated, namely, fresh air (fresh air) is injected into the indoor space. Because the quality of the fresh air is directly determined by the outdoor environment, the fresh air needs to be pretreated, such as filtration and humidity control (dehumidification and/or humidification).
Taking the humidity control pretreatment including dehumidification and humidification of fresh air as an example, for example, the chinese patent (CN1768236C) discloses a humidity control device, and specifically discloses the following: a refrigerant circuit (1) is provided which is provided with a 1 st heat exchanger (3) and a 2 nd heat exchanger (5) and in which a refrigerant cycle performs a vapor compression refrigeration cycle. The adsorbents are respectively present on the surface of the 1 st heat exchanger (3) and the surface of the 2 nd heat exchanger (5). The refrigerant cycle and air circulation of the refrigerant circuit (1) are switched so that moisture of air flowing into the heat exchangers (3, 5) where the refrigerant evaporates is adsorbed by the adsorbent, moisture is released from air flowing into the heat exchangers (5, 3) where the refrigerant condenses, the adsorbent is regenerated, and the air dehumidified by the adsorbent is supplied to the room. The refrigerant cycle and the air circulation of the refrigerant circuit (1) are switched so that the moisture of the air flowing into the heat exchangers (3, 5) where the refrigerant evaporates is adsorbed by the adsorbent, the moisture of the air flowing into the heat exchangers (5, 3) where the refrigerant condenses is released, the adsorbent is regenerated, and the air humidified by the adsorbent is supplied to the room.
It can be seen that the document humidifies and dehumidifies the fresh air by configuring the compressor. However, the switching of the humidifying function and the dehumidifying function of the adsorbent is realized by switching of the four-way valve, and since the adsorbent needs to be periodically subjected to the adsorption and desorption operations, the periodic switching of the four-way valve is necessarily accompanied. For the same fresh air system, the humidification and dehumidification requirements are always selected and relatively fixed within a long time (only humidification is needed in winter in the north), meanwhile, the four-way valve is switched to require reversing pressure difference, corresponding noise cannot be avoided, and poor product experience is brought to users. Therefore, such periodic switching will result in the system not being able to operate continuously.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In view of this, the present invention provides an air conditioning system with humidity control function, the air conditioning system includes an air conditioning subsystem and a fresh air subsystem, the air conditioning subsystem includes a first pipeline corresponding to a low-pressure gaseous refrigerant and a second pipeline corresponding to a high-pressure gaseous refrigerant, wherein the fresh air subsystem includes: 1) an air duct portion including an air duct having a first mode and a second mode, wherein in the first mode, the air duct includes a first air duct and a second air duct; when in the second mode, the air duct comprises a third air duct and a fourth air duct; 2) refrigerant circulation portion, it includes: the heat exchanger unit comprises a first heat exchanger and a second heat exchanger, and a throttling part is arranged between the second end of the first heat exchanger and the first end of the second heat exchanger; the switching unit is respectively connected with the first pipeline and the second pipeline on one hand, and is respectively connected with the first end of the first heat exchanger and the second end of the second heat exchanger on the other hand; wherein at least a part of the surface of the first heat exchanger and at least a part of the surface of the second heat exchanger are both loaded with an adsorbent material, and the adsorbent material can absorb moisture in the air in the process of flowing through the adsorbent material; and releasing the moisture stored therein in case of heat absorption.
With such an arrangement, the humidity control requirement of the air conditioning system can be satisfied by matching the mode of the air duct, the state of the switching unit, and the state of the adsorbent according to the state of the switching unit.
Specifically, the air duct is set to the first mode or the second mode to change the flow mode of the air, the state of the switching unit is switched to change the state of the refrigerant carrying cold or heat flowing through the first heat exchanger and the second heat exchanger, and the adsorbent mounted thereon can dehumidify or humidify the air flowing through the first heat exchanger and entering the indoor space on the one hand and maintain the sustainability of the humidity processing function on the other hand based on the state change of the first heat exchanger and the second heat exchanger. Specifically, the method comprises the following steps: through the matching of the switching actions of the air channel and the switching unit, the fresh air subsystem can continuously adjust the humidity of the air entering the indoor space (the externally circulated fresh air or the internally circulated air in the indoor space).
For the air conditioning system, in a possible implementation manner, the switching unit is a four-way valve, the four-way valve has C, D, E, S four ends, the C end is connected with the second end of the second heat exchanger, the D end is connected to the second pipeline, the E end is connected with the first end of the first heat exchanger, and the S end is connected to the first pipeline.
With this arrangement, a specific implementation form of the switching unit is given.
Specifically, in the case where the switching unit is the four-way valve, the refrigerant flowing through the first heat exchanger and the second heat exchanger can be changed to a state of carrying cold or heat by switching the communication manner of the four ends of the four-way valve. In addition, the adsorbent mounted on the heat exchanger can meet the humidity control requirement of the air conditioning system.
With regard to the above air conditioning system, in a possible implementation manner, the switching unit includes a valve set, and the valve set includes a first valve, a second valve, a third valve and a fourth valve, where a first end of the first valve and a first end of the second valve are respectively connected to the second pipeline, a second end of the first valve is respectively connected to a second end of the second heat exchanger and a second end of the fourth valve, a second end of the second valve is respectively connected to a first end of the first heat exchanger and a first end of the third valve, and a first end of the fourth valve and a second end of the third valve are connected to each other and are respectively connected to the first pipeline.
With this arrangement, another specific implementation form of the switching unit is given.
Specifically, in the case that the switching unit is the above-mentioned valve group, the refrigerant flowing through the first heat exchanger and the second heat exchanger can be changed to a state of carrying cold or heat by switching the on/off states of the valves. In addition, the adsorbent mounted on the heat exchanger can meet the humidity control requirement of the air conditioning system.
To the above air conditioning system, in a possible implementation manner, the fresh air subsystem includes a housing, and an indoor air supply outlet, an indoor air return inlet, an outdoor fresh air inlet, and an outdoor air outlet which are disposed on the housing, the upstream side of the first air duct is the outdoor fresh air inlet, the downstream side is the indoor air supply outlet, so that fresh air of an outdoor environment is introduced into an indoor space through the first air duct, the upstream side of the second air duct is the indoor air return inlet, the downstream side is the outdoor air outlet, so that air of the indoor space is discharged to the outdoor environment through the second air duct, wherein the first heat exchanger can be located in the second air duct, and wherein the second heat exchanger can be located in the first air duct.
Through the arrangement, a specific implementation form of the fresh air subsystem matched with the first mode of the air duct is provided.
For the above air conditioning system, in a possible implementation manner, the fresh air subsystem includes a housing, and an indoor air supply outlet, an indoor air return inlet, an outdoor fresh air inlet, and an outdoor air exhaust outlet which are disposed on the housing, an upstream side of the third air duct is the indoor air return inlet, a downstream side of the third air duct is the indoor air supply outlet, so that air introduced into the fresh air subsystem from the indoor space through the third air duct is re-distributed to the indoor space, an upstream side of the fourth air duct is the outdoor fresh air inlet, and a downstream side of the fourth air duct is the outdoor air exhaust outlet, so that air introduced into the fresh air subsystem from the outdoor environment through the fourth air duct is re-discharged to the outdoor environment, wherein the first heat exchanger can be located in the third air duct, and wherein the second heat exchanger can be located in the fourth air duct.
Through the arrangement, a specific implementation form of the fresh air subsystem matched with the second mode of the air duct is provided.
With regard to the air conditioning system described above, in one possible embodiment, the air duct portion includes a switching mechanism by which the air duct can be switched between the first mode and the second mode.
With this arrangement, the mode switching of the air duct can be realized by the switching mechanism.
With regard to the air conditioning system, in a possible implementation manner, the switching mechanism includes a combination of a plurality of on-off dampers, and the air duct is switched between the first mode and the second mode by adjusting the on-off state of each damper.
With this arrangement, a specific form of the switching mechanism is given.
In a possible embodiment for the air conditioning system described above, the sorption material is directly mounted to a surface of the respective first heat exchanger and/or second heat exchanger.
With such an arrangement, an implementation of the adsorption material loading to the heat exchanger is given.
With regard to the air conditioning system described above, in one possible embodiment, the fresh air subsystem comprises a substrate to which the adsorbent material is carried, the substrate being secured to a surface of the respective first and/or second heat exchanger
By such an arrangement, another implementation of mounting the adsorbent material to the heat exchanger is given.
With regard to the air conditioning system described above, in one possible embodiment, the air conditioning system further comprises a sensible heat recovery section comprising: a first sensible heat recovery module disposed in the casing and located at a downstream side of the indoor return air inlet; and/or a second sensible heat recovery module which is arranged in the shell and is positioned at the downstream side of the outdoor fresh air inlet.
Through such setting, can seek to realize retrieving the sensible heat of new trend subsystem to the performance of new trend subsystem has been optimized.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings, in which:
fig. 1 shows a schematic view of an air conditioning system according to a first embodiment of the present invention when in an external circulation humidification mode;
fig. 2 shows a schematic view of an air conditioning system according to a first embodiment of the present invention in an internal circulation humidification mode;
FIG. 3 is a schematic diagram illustrating the air conditioning system of the first embodiment of the present invention in an outside loop dehumidification mode;
FIG. 4 illustrates a schematic diagram of the air conditioning system in the inner loop dehumidification mode in accordance with the first embodiment of the present invention;
FIG. 5 is a schematic diagram of an air conditioning system in a second embodiment of the present invention in an outside loop humidification and dehumidification mode;
FIG. 6 is a schematic diagram of an air conditioning system in a second embodiment of the present invention in an internal cycle humidification and dehumidification mode; and
fig. 7 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention.
List of reference numerals:
11. an indoor air supply outlet; 12. an indoor return air inlet; 13. an outdoor fresh air port; 14. an outdoor air outlet; 21. a first air duct; 22. a second air duct; 23. a third air duct; 24. a fourth air duct; 31. an indoor fan; 32. an outdoor fan; 51. a first heat exchanger; 52. a second heat exchanger; 6. an electronic expansion valve; 7. a four-way valve; 81. a first valve; 82. a second valve; 83. a third valve; 84. a fourth valve; 91. a first sensible heat recovery module; 92. a second sensible heat recovery module.
Detailed Description
Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that the terms "first", "second", and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless expressly stated or limited otherwise, the terms "connected," "connected," and "coupled" are intended to be inclusive and mean, for example, that there may be a direct connection, an indirect connection via intermediate components, and communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The air conditioner as the sub-part of the air conditioner mainly comprises a compressor forming a refrigerant main loop, an indoor heat exchanger, an outdoor heat exchanger, a throttling component (such as a capillary tube, an electronic expansion valve and the like) and a four-way valve, wherein the communication mode of the four-way valve is switched, so that the air conditioner can have a conventional refrigeration mode and a heating mode, and cold/heat can be distributed to the surface of the indoor heat exchanger along with the phase change of the refrigerant through the circulating flow of the refrigerant in the loop formed by the compressor, the condenser, the throttling component, the evaporator and the compressor. Specifically, the method comprises the following steps:
when the refrigerant circulates along the circuit of the compressor → the indoor heat exchanger → the outdoor heat exchanger → the compressor, the air conditioning system is in a heating cycle. In the case where the air conditioner is in a heating mode, the indoor heat exchanger serves as a condenser that emits heat. Accordingly, under the action of the indoor fan, air in the indoor space is sucked into the shell of the air conditioner to perform heat convection with the surface of the indoor heat exchanger so as to obtain heat during a heating cycle, and thus the temperature of the indoor space is increased.
When the refrigerant circulates along the circuit of the compressor → the outdoor heat exchanger → the indoor heat exchanger → the compressor, the air conditioning system is in a refrigeration cycle. Namely: in the case of an air conditioner in a cooling mode, the indoor heat exchanger serves as an evaporator for distributing cooling energy. Accordingly, under the action of the indoor fan, air in the indoor space is sucked into the shell of the air conditioner to perform heat convection with the surface of the indoor heat exchanger, so that cold energy is obtained during a refrigeration cycle, and the temperature of the indoor space is reduced.
Air conditioners generally comprise an outdoor part and an indoor part, which are integrated in the same casing for existing models (such as window air conditioners, etc.). For most models, the outdoor part and the indoor part are of a split structure, wherein the outdoor part is called an outdoor unit of an air conditioner, and the indoor part is called an indoor unit of the air conditioner, and the outdoor part and the indoor part are connected through a pipeline. Air conditioners of a split type structure generally include a cabinet type air conditioner, a wall-mounted air conditioner, and a built-in type air conditioner.
Since the air conditioner is operated during the cooling/heating cycle as described above, the air of the indoor space is constantly circulated to adjust the temperature and humidity thereof. Therefore, a fresh air subsystem is introduced on the basis of the air conditioner as a sub-part of the air conditioner. Therefore, fresh air of the outdoor environment is introduced into the indoor space to update or partially update the indoor space for circulating air, so that the air quality is improved to a certain degree. It should be noted that, hereinafter, the first line corresponding to the low-pressure gaseous refrigerant should be understood as a line connected to the return port of the aforementioned compressor, and the second line corresponding to the high-pressure gaseous refrigerant should be understood as a line connected to the exhaust port of the aforementioned compressor.
Example 1:
referring to fig. 1 to 4, fig. 1 illustrates a schematic diagram of an air conditioning system according to a first embodiment of the present invention when the air conditioning system is in an external circulation humidification mode, fig. 2 illustrates a schematic diagram of the air conditioning system according to the first embodiment of the present invention when the air conditioning system is in an internal circulation humidification mode, fig. 3 illustrates a schematic diagram of the air conditioning system according to the first embodiment of the present invention when the air conditioning system is in an external circulation dehumidification mode, and fig. 4 illustrates a schematic diagram of the air conditioning system according to the first embodiment of the present invention when the air conditioning system is in an internal circulation dehumidification mode. As shown in fig. 1 to 4, on the basis of introducing the first pipeline and the second pipeline, the fresh air subsystem mainly includes a casing, and an indoor air supply outlet 11, an indoor air return inlet 12, an outdoor fresh air inlet 13 and an outdoor air outlet 14 which are arranged on the casing, wherein the indoor air supply outlet, the indoor air return inlet and the indoor space are communicated, and the outdoor fresh air inlet and the outdoor air outlet are communicated with the outdoor environment.
Specifically, be provided with wind channel portion in the casing, wind channel portion includes the first wind channel 21 of top and the second wind channel 22 of below, and the upstream side in first wind channel is outdoor fresh air inlet, the downstream side is indoor supply-air outlet to introduce the new trend of outdoor environment through first wind channel, the upstream side in second wind channel is indoor return air inlet, the downstream side is outdoor air exit, thereby discharges the air of indoor space to outdoor environment through the second wind channel.
The indoor air supply outlet is provided with an indoor fan 31, for example, an indoor fan is arranged at a position of the first air duct of the fresh air subsystem, which is close to the upstream of the indoor air supply outlet. So as to guide the fresh air from the outdoor fresh air inlet to be distributed to the indoor space. As will be understood from the following, the indoor fan of the present invention further includes: and in the internal circulation humidification/dehumidification mode, the air entering the fresh air subsystem through the indoor air return opening is guided to be re-distributed back to the indoor space, and in the external circulation humidification/dehumidification mode, the fresh air from the outdoor fresh air opening is guided to be distributed to the indoor space.
The outdoor air outlet is provided with an outdoor fan 32, for example, an outdoor fan is arranged at a position of the second air duct of the fresh air subsystem, which is close to the upstream of the outdoor air outlet. So as to direct the air of the indoor space to be discharged to the outdoor environment. As will be understood from the following, the outdoor fan of the present invention further includes: in the internal circulation humidification/dehumidification mode, the fresh air entering the fresh air subsystem through the outdoor fresh air inlet is guided to be directly discharged to the outdoor environment, and in the external circulation humidification/dehumidification and non-humidification/dehumidification air exchange states, the air in the indoor space is guided to be discharged to the outdoor environment.
The humidity control device mentioned in the background art performs humidification and dehumidification processing on fresh air by configuring a compressor. However, considering that the two factors of 'the adsorbent needs to be periodically adsorbed and desorbed' and 'the requirement of humidification and dehumidification is always one and relatively fixed for a long time', the document has the defects that the system cannot continuously operate and the problem of user discomfort caused by the switching of the four-way valve exists in practical application. On the basis of the above, the inventor provides the invention after carefully analyzing the problems in the scheme and the scheme.
The fresh air subsystem of the invention also has the function of adjusting the air humidity on the premise of having the basic function of updating or partially updating the indoor space for circulating air. In addition, the fresh air subsystem has the function of continuously humidifying/dehumidifying the air on the premise of realizing the air updating of the indoor space through the cooperation of the air channel, the adsorption material and the four-way valve serving as the switching unit.
With further reference to fig. 1 to 4, the fresh air subsystem of the present invention comprises in particular:
1) for the switching mechanism of the wind channel configuration of new trend subsystem, the effect of switching mechanism is: the air duct portion of the fresh air subsystem is switched to a third air duct 23 comprising the left side and a fourth air duct 24 comprising the right side through the first air duct and the second air duct, wherein the upstream side of the third air duct is an indoor air return opening, and the downstream side of the third air duct is an indoor air supply opening, so that air introduced into the fresh air subsystem from the indoor space through the third air duct is re-distributed to the indoor space, the upstream side of the fourth air duct is an outdoor fresh air opening, and the downstream side of the fourth air duct is an outdoor air outlet, so that air introduced into the fresh air subsystem from the outdoor environment through the fourth air duct is re-discharged to the outdoor environment.
It can be understood that, on the premise that the air duct of the fresh air subsystem can be reasonably planned, a person skilled in the art can reasonably select a specific form of the switching mechanism according to actual needs. For example, the air duct in the fresh air subsystem can be switched to the aforementioned mode including the first air duct and the second air duct (referred to as a first mode) or the aforementioned mode including the third air duct and the fourth air duct (referred to as a second mode), for example, through a combination of a plurality of switchable dampers.
2) The refrigerant circulation part comprises a heat exchanger unit and a switching unit, in the embodiment, the switching unit is a four-way valve 7, the refrigerant circulation part comprises a first heat exchanger 51, a second heat exchanger 52 and an electronic expansion valve 6 which is arranged between the first heat exchanger and the second heat exchanger and is used as a throttling component, the four-way valve 7 is provided with C, D, E, S four ends, the C end is connected with the second end (upper end) of the second heat exchanger, the D end is connected to a second pipeline, the E end is connected with the first end (lower end) of the first heat exchanger, and the S end is connected to the first pipeline. The state that the refrigerant flowing through the first heat exchanger and the second heat exchanger carries cold or heat can be changed by switching the communication mode (C-D/E-S or C-S/D-E) of the four-way valve.
The adsorbent is mounted on at least a part of the surfaces of the first heat exchanger and the second heat exchanger, and the adsorbent is mounted on the entire surface of the first heat exchanger and the second heat exchanger, for example. It is of course also possible to coat the sorption material only in a local area, such as only on one of the two surfaces in the direction of the air flow, or: firstly carrying an adsorption material to a substrate serving as a carrier, and then fixing the substrate to the surface of a heat exchanger; and the like.
The basic properties of the adsorbent material are: the air conditioner can absorb moisture in the air flow passing through the air conditioner under normal conditions, and therefore the air conditioner can achieve the dehumidification effect. The moisture stored in the air conditioner can be released when the air conditioner is heated, such as the moisture is released into the air flow passing through the air conditioner, and therefore the air conditioner plays a role of humidifying. Illustratively, the adsorbent material may be one or more of silica gel, molecular sieve, zeolite, MOFs (Metal-Organic Frameworks), composite salts, and the like.
It can be understood that the higher the water absorption of the adsorbing material, the higher the dehumidification efficiency, so those skilled in the art can determine the specific composition of the adsorbing material according to the actual humidification and dehumidification requirements, such as the type of the material, the ratio between the types, the amount of the material, and the like.
Based on the property that the adsorbing material has, taking the first heat exchanger as an example, in the case that the first heat exchanger is a condenser, the adsorbing material on the surface of the first heat exchanger can humidify the air flowing through it by releasing water due to heat absorption; in the case where the first heat exchanger is an evaporator, the adsorbent material on the surface of the first heat exchanger may absorb moisture to dehumidify the air flowing therethrough.
At this time, in the case where the air passage is switched to include the first air passage and the second air passage by the switching mechanism, assuming that the first heat exchanger is a condenser at this time, the adsorbent mounted on the surface of the first heat exchanger can humidify the air flowing through the second air passage.
At this time, in the case where the air duct is switched by the switching mechanism to include the third air duct and the fourth air duct, assuming that the second heat exchanger is a condenser at this time, the second portion can humidify the air flowing through the fourth air duct.
Based on the air conditioning system with the above structure, the following will further explain the process and principle of the air conditioning system of the present invention to achieve its continuous humidification/dehumidification function with reference to fig. 1 to 4.
In the case of a north winter season or the like, in a bedroom or the like, there may be a case where the heating and the air conditioner in the heating mode are operated together. When the time is longer, the relative humidity of the air is obviously reduced, and in addition, the air (fresh air source) of the northern outdoor environment is drier, so that the air is necessary to be humidified, and at the moment, the fresh air subsystem can be operated in a humidification mode, so that the air quality (basic function of the fresh air subsystem) of the indoor space is ensured, and the air humidity (function of the fresh air subsystem of the invention) of the indoor space is ensured. The humidifying mode comprises an external circulation humidifying mode and an internal circulation external circulation humidifying mode:
as shown in fig. 1, the implementation of the external circulation humidification mode specifically includes:
the four-way valve 7 is switched on by C-D and E-S, the electronic expansion valve 6 is actuated, the high-pressure gaseous refrigerant from the lower second pipeline is converted into low-pressure gaseous refrigerant to return to the upper second pipeline through the four-way valve, the upper right second heat exchanger 52 and the lower left first heat exchanger 51 in sequence, at the moment, the upper right second heat exchanger is a condenser, and the lower left first heat exchanger is an evaporator. Simultaneously, the wind channel that makes this moment is in first mode through switching mechanism, promptly: the outdoor fresh air inlet 13 is communicated with the indoor air supply outlet 11 to form an upper first air duct 21, and the indoor return air inlet 12 is communicated with the outdoor air outlet 14 to form a lower second air duct 22.
The second heat exchanger in the first air channel between the indoor air supply outlet and the outdoor fresh air inlet is used as a condenser at the moment, so that the adsorbing material on the surface of the second heat exchanger is in a desorption state of releasing moisture content due to heat absorption, and the state of effective humidification can be realized. Since the first heat exchanger in the second air duct between the indoor return air inlet and the outdoor air outlet is used as an evaporator at this time, the adsorbing material on the surface of the first heat exchanger is in an adsorbing state of absorbing moisture, that is, a state of recovering the humidifying function.
Therefore, under the action of the indoor fan, fresh air in the outdoor environment enters the fresh air subsystem through the outdoor fresh air inlet and enters the indoor space through the indoor air supply outlet through the first air duct. During this period, the fresh air is humidified while passing through the second heat exchanger having the adsorbing material on the surface between the outdoor fresh air inlet and the indoor air supply inlet. Meanwhile, air in the indoor space enters the fresh air subsystem through the indoor air return opening and is exhausted to the outdoor environment through the outdoor air outlet through the second air duct. During the period, when the air flows through the second heat exchanger between the indoor air return opening and the outdoor air outlet opening and the surface of the second heat exchanger is provided with the adsorbing material, the adsorbing material on the surface of the second heat exchanger absorbs the moisture in the air, and the humidifying function is gradually recovered.
It can be seen that in this case, the humidification function is realized with the feeding and discharging of fresh air, and thus this mode is referred to as an external circulation humidification mode.
As shown in fig. 2, the implementation of the internal circulation humidification mode specifically includes:
the C-S and D-E of the four-way valve 7 are communicated, the electronic expansion valve 6 acts, high-pressure gaseous refrigerant from the lower second pipeline is converted into low-pressure gaseous refrigerant to return to the upper second pipeline through the four-way valve, the left lower first heat exchanger 51 and the right upper second heat exchanger 52 in sequence, at the moment, the left lower first heat exchanger is a condenser, and the right upper second heat exchanger is an evaporator. Simultaneously, the wind channel at this moment is in the second mode through switching mechanism, promptly: the indoor return air inlet 12 is communicated with the indoor air supply outlet 11 to form a left third air duct 23, and the outdoor fresh air inlet 13 is communicated with the outdoor air outlet 14 to form a right fourth air duct 24.
Because the first heat exchanger in the third air duct between the indoor air return inlet and the indoor air supply outlet is used as a condenser at the moment, the adsorbing material on the surface of the first heat exchanger is in a desorption state of releasing moisture content due to heat absorption, namely, in an effective humidifying state. Since the second heat exchanger in the fourth air duct between the outdoor fresh air inlet and the outdoor air outlet is used as an evaporator at this time, the adsorbing material on the surface of the second heat exchanger is in an adsorbing state of absorbing moisture, that is, a state of recovering the humidifying function.
Therefore, under the action of the outdoor fan, fresh air in the outdoor environment enters the fresh air subsystem through the outdoor fresh air inlet and is exhausted to the outdoor environment space through the outdoor air outlet through the fourth air duct. During the period, when fresh air flows through the second heat exchanger which is arranged between the outdoor fresh air inlet and the outdoor air outlet and is provided with the adsorbing material on the surface, the adsorbing material on the surface of the second heat exchanger absorbs the moisture in the fresh air, and the humidifying function is gradually recovered. Meanwhile, air in the indoor space enters the fresh air subsystem through the indoor air return opening and is re-distributed to the indoor space through the third air duct and the indoor air return opening. During this time, the air is humidified while passing through the first heat exchanger having the adsorbing material on the surface between the indoor return air inlet and the indoor supply air outlet.
In this case, the fresh air subsystem is in operation, the humidifying function of the adsorbent material on the surface of the second heat exchanger is gradually restored, but fresh air is not introduced into the indoor space, and the humidifying function is performed along with the discharge and introduction of air into the indoor space, so this mode is referred to as an internal circulation humidifying mode. This mode can also be explained as follows: the fresh air subsystem is temporarily converted into an air conditioner with a humidifying function to humidify the air in the indoor space. During this time, however, the humidifying function of the adsorbent material of the second heat exchanger surface is restored.
Thus, when the user's demand is a humidification demand, the humidification function can be continuously realized while the basic function of the fresh air subsystem for introducing fresh air can be realized by the fresh air subsystem only by periodically adjusting the mode of the air duct of the fresh air subsystem through the switching mechanism and enabling the (first and second) refrigerant circulating systems to correspondingly alternately operate. The switching period of the air channel can be flexibly determined according to the attributes of the adsorbing materials, the actual humidification requirements, the service life of the adsorbing materials and other factors.
It is understood that the switching mechanism is a combination of a plurality of on-off dampers and is only described by way of example, and those skilled in the art can select any reasonable mechanism according to actual needs on the premise that the mode switching of the air duct can be realized.
On this premise, for example, a relative humidity threshold (low value) may be preset, and when the detected current relative humidity of the indoor space is less than the low value, the aforementioned humidification mode may be operated. In case the relative humidity reaches the target level (another relative humidity threshold higher than the low value), the humidification mode can be exited, i.e.: and the refrigerant circulating system stops running, the air duct is switched to a certain reference mode, and if the reference mode is the same as the first mode, the air duct comprises a first air duct and a second air duct.
Similar to the humidification function, when the air is dehumidified, the fresh air subsystem can be operated in a dehumidification mode, so that the air quality of the indoor space (the basic function of the fresh air subsystem) is ensured, and the air humidity of the indoor space (the function of the fresh air subsystem of the invention) is effectively reduced. The dehumidification mode includes an outer circulation dehumidification mode and an inner circulation dehumidification mode:
as shown in fig. 3, the external circulation dehumidification mode specifically includes:
the C-S and D-E of the four-way valve 7 are communicated, the electronic expansion valve 6 acts, high-pressure gaseous refrigerant from the lower second pipeline is converted into low-pressure gaseous refrigerant to return to the upper second pipeline through the four-way valve, the left lower first heat exchanger 51 and the right upper second heat exchanger 52 in sequence, at the moment, the left lower first heat exchanger is a condenser, and the right upper second heat exchanger is an evaporator. Simultaneously, the wind channel that makes this moment is in first mode through switching mechanism, promptly: the outdoor fresh air inlet 13 is communicated with the indoor air supply outlet 11 to form an upper first air duct 21, and the indoor return air inlet 12 is communicated with the outdoor air outlet 14 to form a lower second air duct 22.
Because the second heat exchanger in the first air channel between the indoor air supply opening and the outdoor fresh air opening is used as an evaporator at the moment, the adsorbing material on the surface of the second heat exchanger can absorb and dehumidify fresh air flowing through the second heat exchanger. Because the first heat exchanger in the second air duct between the indoor air return opening and the outdoor air exhaust opening is used as a condenser, the adsorption material on the surface of the first heat exchanger absorbs heat so as to release the moisture stored in the first heat exchanger into the air exhausted to the outdoor environment, and the water absorption and dehumidification functions of the adsorption material on the surface of the first heat exchanger are gradually recovered.
Therefore, under the action of the indoor fan, fresh air in the outdoor environment enters the fresh air subsystem through the outdoor fresh air inlet and enters the indoor space through the indoor air supply outlet through the first air duct. During this period, when the fresh air flows through the second heat exchanger between the outdoor fresh air inlet and the indoor air supply outlet, the adsorbing material on the surface of the second heat exchanger absorbs the moisture in the fresh air, and the fresh air is dehumidified, namely, the adsorbing material on the surface of the second heat exchanger is in an effective dehumidifying state. Meanwhile, air in the indoor space enters the fresh air subsystem through the indoor air return opening and is exhausted to the outdoor environment through the second air duct through the outdoor air outlet, during the period, when the air flows through the first heat exchanger between the indoor air return opening and the outdoor air outlet, moisture stored in the adsorbing material on the surface of the first heat exchanger is released, and the water absorption and dehumidification functions of the adsorbing material on the surface of the first heat exchanger are gradually recovered.
It can be seen that in this case, the dehumidification function is performed with the feeding and discharging of fresh air, and thus this mode is referred to as an external circulation dehumidification mode.
As shown in fig. 4, the implementation of the internal circulation dehumidification mode specifically includes:
the four-way valve 7 is switched on by C-D and E-S, the electronic expansion valve 6 is actuated, the high-pressure gaseous refrigerant from the lower second pipeline is converted into low-pressure gaseous refrigerant to return to the upper second pipeline through the four-way valve, the upper right second heat exchanger 52 and the lower left first heat exchanger 51 in sequence, at the moment, the upper right second heat exchanger is a condenser, and the lower left first heat exchanger is an evaporator. Simultaneously, the wind channel at this moment is in the second mode through switching mechanism, promptly: the indoor return air inlet and the indoor air supply outlet are communicated to form a third air duct 23 on the left side, and the outdoor fresh air inlet and the outdoor air outlet are communicated to form a fourth air duct 24 on the right side.
Because the first heat exchanger in the third air channel between the indoor air return opening and the indoor air supply opening is used as the evaporator, the adsorbing material on the surface of the first heat exchanger can absorb moisture in the air, and the air is dehumidified, namely the adsorbing material on the surface of the first heat exchanger is in an effective dehumidification state. The second heat exchanger in the fourth air duct between the outdoor fresh air inlet and the outdoor air outlet is used as a condenser at the moment, so that the adsorption material on the surface of the second heat exchanger absorbs heat to release the moisture stored in the second heat exchanger, and along with the desorption process, the water absorption and dehumidification functions of the adsorption material on the surface of the second heat exchanger are gradually recovered.
Therefore, under the action of the outdoor fan, fresh air in the outdoor environment enters the fresh air subsystem through the outdoor fresh air inlet and is exhausted to the outdoor environment through the outdoor air outlet through the fourth air duct. During the period, when fresh air flows through the second heat exchanger between the outdoor fresh air inlet and the outdoor air outlet and provided with the adsorbing material on the surface, the moisture stored in the adsorbing material on the surface of the second heat exchanger is released, and the dehumidifying function is gradually recovered. Meanwhile, air in the indoor space enters the fresh air subsystem through the indoor air return opening and is re-distributed to the indoor space through the third air duct and the indoor air return opening. During this period, when the air flows through the first heat exchanger having the adsorbent on the surface thereof between the indoor return air inlet and the indoor air outlet, the adsorbent attached to the surface of the first heat exchanger absorbs moisture in the air, and the air is dehumidified.
In this case, the fresh air subsystem is in operation, the dehumidification function of the adsorbent material on the surface of the second heat exchanger is gradually restored, but fresh air is not introduced into the indoor space, and the dehumidification function is performed along with the discharge and feeding of air into the indoor space, so this mode is called an internal circulation dehumidification mode. This mode can also be explained as follows: the fresh air subsystem is temporarily converted into an air conditioner with a dehumidification function to perform dehumidification treatment on the air in the indoor space. During this time, however, the dehumidification capacity of the sorption material of the second heat exchanger surface is restored.
Similar to the aforementioned requirements, in this way, when the user's requirement is a dehumidification requirement, the mode of the air duct of the fresh air subsystem is periodically adjusted by the switching mechanism, and the (first and second) refrigerant circulation systems are correspondingly operated alternately, so that the dehumidification function can be continuously realized while the basic function of introducing fresh air is realized by the fresh air subsystem.
On this premise, for example, a relative humidity threshold (high value) may be preset, and when the current relative humidity of the detected indoor space is greater than the high value, the aforementioned dehumidification mode may be operated. In the case that the relative humidity reaches the target level (another relative humidity threshold lower than the high value), the dehumidification mode may be exited.
Example 2:
referring to fig. 5 and 6, fig. 5 is a schematic view illustrating an air conditioning system according to a second embodiment of the present invention in an external circulation humidification/dehumidification mode, and fig. 6 is a schematic view illustrating an air conditioning system according to a second embodiment of the present invention in an internal circulation humidification/dehumidification mode. Wherein, the functions and principles of (figure 1, figure 3) and figure 5, (figure 2, figure 4) and figure 6 are in one-to-one correspondence. The only difference is that: the switching unit in embodiment 1 is a four-way valve 7, and the switching unit in this embodiment includes a valve group, specifically, the valve group includes a first valve 81, a second valve 82, a third valve 83, and a fourth valve 84, wherein a first end of the first valve and a first end of the second valve are respectively connected to the second pipeline below, a second end of the first valve is respectively connected to a second end of the second heat exchanger and a second end of the fourth valve, a second end of the second valve is respectively connected to the first end of the first heat exchanger and a first end of the third valve, and a first end of the fourth valve and a second end of the third valve are connected to each other and are respectively connected to the first pipeline above. Illustratively, the four valves are all solenoid valves. The cold carrying state or the heat carrying state of the refrigerant flowing through the first heat exchanger and the second heat exchanger can be changed by switching the on-off state of each valve in the valve group.
Corresponding to the external circulation humidification mode shown in fig. 1, the open/close states of the valves in the valve group in fig. 5 are: the first valve 81 and the third valve 83 are opened, and the second valve 82 and the fourth valve 84 are closed;
corresponding to the internal circulation humidification mode shown in fig. 2, the open/close states of the valves in the valve group in fig. 6 are: the second valve 82 and the fourth valve 84 are opened, and the first valve 81 and the third valve 83 are closed;
corresponding to the external circulation dehumidification mode shown in fig. 3, the open/close states of the valves in the valve group in fig. 5 are: the second valve 82 and the fourth valve 84 are opened, and the first valve 81 and the third valve 83 are closed.
In the internal circulation dehumidification mode shown in fig. 4, the valves in the valve group shown in fig. 6 are opened and closed such that the first valve 81 and the third valve 83 are opened, and the second valve 82 and the fourth valve 84 are closed.
Referring to fig. 7, fig. 7 is a schematic structural view illustrating an air conditioning system according to an embodiment of the present invention. As shown in fig. 7, in one possible embodiment, the fresh air subsystem further includes a sensible heat recovery portion, and the sensible heat recovery portion includes: a first sensible heat recovery module 91 disposed in the casing and located at the downstream side of the indoor return air opening 12, and a second sensible heat recovery module 92 disposed in the casing and located at the downstream side of the outdoor fresh air opening 13.
Illustratively, if the first sensible heat recovery module 91 and the second sensible heat recovery module 92 are of an integrated structure, specifically, the first sensible heat recovery module 91 and the second sensible heat recovery module 92 are both heat exchangers and a heat transfer working medium circulates between the two heat exchangers, and heat can be transferred between the two heat exchangers along with the circulation flow of the heat transfer working medium. Obviously, the first sensible heat recovery module 91 and the second sensible heat recovery module 92 may also belong to two heat recovery devices, for example, the respective heat recovery devices are respectively configured with a heat recovery module forming a circulation loop of the heat transfer medium with the first sensible heat recovery module and the second sensible heat recovery module.
Taking the first sensible heat recovery module 91 and the second sensible heat recovery module 92 as an integrated structure as an example, based on the structure, the air conditioning system of the present invention can have a fresh air heat recovery mode for adjusting the temperature. Specifically, the method comprises the following steps: under new trend heat recovery mode, can switch into first mode with the wind channel, promptly: the air duct includes a first air duct 21 and a second air duct 22, and the operation of the refrigerant circulation unit is stopped, for example, each valve in the valve group in embodiment 2 is closed and the electronic expansion valve is not operated. Under the precondition:
if in summer in the north, the second sensible heat recovery module 92 precools the fresh air to a certain extent in the process that the fresh air in the outdoor environment is conveyed to the indoor space through the first air duct. After the recovered heat is transferred to the first sensible heat recovery module 91 through the heat transfer medium, the sustainability of pre-cooling can be ensured by configuring a structure for digesting the part of the heat at the first sensible heat recovery module 91 (such as a hot water terminal or a working medium circulation device for taking away the part of the heat).
In winter in the north, the first sensible heat recovery module 91 recovers heat in the air to a certain extent in the process that the air in the indoor space is discharged to the outdoor environment through the second air duct. The recovered heat is transferred to the second sensible heat recovery module 92 through the heat transfer medium, and then the fresh air transferred to the indoor space through the first air duct can be preheated to a certain degree.
It can be seen that the fresh air subsystem of the present invention can realize four operation modes of the external circulation humidification mode, the internal circulation humidification mode, the external circulation dehumidification mode and the internal circulation dehumidification mode of the fresh air subsystem through mode switching of the air duct, switching of the switching unit and combination of the states of the adsorbing material along with the states of the switching unit. Specifically, the configuration of the air duct is switched by the switching mechanism between a first mode including the first air duct and the second air duct and a second mode including the third air duct and the fourth air duct, the (first and second) heat exchangers are set to the operating state of releasing heat or releasing cold by the switching unit, and the performance of the adsorbent material mounted on the surfaces of the (first and second) heat exchangers is changed, and the fresh air subsystem can be continuously set to the state of realizing the humidification function or the dehumidification function by cooperation between the two operation elements and the adsorbent material. In addition, through addding the sensible heat recovery portion, can make the fresh air subsystem realize humidity control's basis, can also realize the temperature regulation of certain degree, further optimized the performance of fresh air subsystem.
So far, the technical solution of the present invention has been described with reference to one embodiment shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. An air conditioning system with humidity control function is characterized in that the air conditioning system comprises an air conditioning subsystem and a fresh air subsystem, the air conditioning subsystem comprises a first pipeline corresponding to low-pressure gaseous refrigerant and a second pipeline corresponding to high-pressure gaseous refrigerant,
wherein, new trend subsystem includes:
1) an air duct portion including an air duct having a first mode and a second mode,
when in the first mode, the air duct comprises a first air duct and a second air duct;
when in the second mode, the air duct comprises a third air duct and a fourth air duct;
2) refrigerant circulation portion, it includes:
the heat exchanger unit comprises a first heat exchanger and a second heat exchanger, and a throttling part is arranged between the second end of the first heat exchanger and the first end of the second heat exchanger; and
the switching unit is respectively connected with the first pipeline and the second pipeline on one hand, and is respectively connected with the first end of the first heat exchanger and the second end of the second heat exchanger on the other hand;
wherein at least a part of the surface of the first heat exchanger and at least a part of the surface of the second heat exchanger are both loaded with an adsorbent material, and the adsorbent material can absorb moisture in the air in the process of flowing through the adsorbent material; and
releasing the moisture stored therein in case of heat absorption.
2. The air conditioning system of claim 1, wherein the switching unit is a four-way valve,
the four-way valve is provided with C, D, E, S four ends, wherein the end C is connected with the second end of the second heat exchanger, the end D is connected to the second pipeline, the end E is connected with the first end of the first heat exchanger, and the end S is connected to the first pipeline.
3. The air conditioning system of claim 1, wherein the switching unit includes a valve set including a first valve, a second valve, a third valve, and a fourth valve,
wherein a first end of the first valve and a first end of the second valve are connected to the second pipeline, respectively,
the second end of the first valve is respectively connected with the second end of the second heat exchanger and the second end of the fourth valve,
the second end of the second valve is respectively connected with the first end of the first heat exchanger and the first end of the third valve,
the first end of the fourth valve and the second end of the third valve are connected with each other and are respectively connected to the first pipeline.
4. The air conditioning system of claim 1, wherein the fresh air subsystem comprises a housing and an indoor supply air outlet, an indoor return air outlet, an outdoor fresh air outlet and an outdoor exhaust air outlet arranged on the housing,
the upstream side of the first air duct is the outdoor fresh air inlet, the downstream side is the indoor air supply outlet, so that fresh air in the outdoor environment is introduced into the indoor space through the first air duct,
the upstream side of the second air duct is the indoor air return opening, and the downstream side is the outdoor air outlet opening, so that the air in the indoor space is discharged to the outdoor environment through the second air duct,
wherein the first heat exchanger is capable of being within the second air duct,
wherein the second heat exchanger is capable of being within the first air duct.
5. The air conditioning system of claim 1, wherein the fresh air subsystem comprises a housing and an indoor supply air outlet, an indoor return air outlet, an outdoor fresh air outlet and an outdoor exhaust air outlet arranged on the housing,
the upstream side of the third air duct is the indoor air return opening, and the downstream side of the third air duct is the indoor air supply opening, so that the air introduced into the fresh air subsystem from the indoor space is re-distributed to the indoor space through the third air duct,
the upstream side of the fourth air duct is the outdoor fresh air inlet, the downstream side of the fourth air duct is the outdoor air outlet, so that the air introduced into the fresh air subsystem from the outdoor environment through the fourth air duct is exhausted to the outdoor environment again,
wherein the first heat exchanger is capable of being within the third air duct,
wherein the second heat exchanger is capable of being within the fourth air duct.
6. The air conditioning system according to any one of claims 1 to 5, wherein the air duct portion includes a switching mechanism by which the air duct is switchable between a first mode and a second mode.
7. The air conditioning system of claim 6, wherein the switching mechanism comprises a combination of a plurality of switchable dampers, each damper being switchable between the first mode and the second mode by adjusting the on/off state of the damper.
8. Air conditioning system according to any of claims 1 to 5, characterized in that the sorption material is directly piggybacked to a surface of the respective first and/or second heat exchanger.
9. An air conditioning system according to any of claims 1 to 5, wherein the fresh air subsystem comprises a substrate to which the adsorbent material is carried, the substrate being secured to a surface of the respective first and/or second heat exchanger.
10. The air conditioning system according to claim 4 or 5, further comprising a sensible heat recovery part, the sensible heat recovery part comprising:
a first sensible heat recovery module disposed in the casing and located at a downstream side of the indoor return air inlet; and/or
And the second sensible heat recovery module is arranged in the shell and is positioned at the downstream side of the outdoor fresh air inlet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114543171A (en) * | 2022-02-16 | 2022-05-27 | 青岛海信日立空调系统有限公司 | Air conditioner |
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