CN107676902A - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN107676902A CN107676902A CN201711021470.6A CN201711021470A CN107676902A CN 107676902 A CN107676902 A CN 107676902A CN 201711021470 A CN201711021470 A CN 201711021470A CN 107676902 A CN107676902 A CN 107676902A
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- Prior art keywords
- fresh air
- air
- conditioning
- compressor
- module
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 56
- 239000003570 air Substances 0.000 claims abstract description 152
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- 239000007792 gaseous phases Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reactions Methods 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000003507 refrigerants Substances 0.000 description 91
- 238000007791 dehumidification Methods 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 21
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- 238000003303 reheating Methods 0.000 description 8
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- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound 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Classifications
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
Description
Technical field
The application is related to environmental area, more particularly to a kind of air-conditioning system that can control temperature and humidity relatively independently System.
Background technology
Currently, people are for life or the requirement more and more higher of living environment, thus in increasing space equipped with The air-conditioning system of multi-connected machine, so that comfort level of the people in activity space can be enable to be lifted.In order to obtain higher environment Comfort level, not only need the temperature of Regulate Environment, it is also necessary to the humidity of Regulate Environment.Therefore, for air-conditioning system, how Independently regulating and controlling temperature and humidity turn into the technical issues that need to address.
The content of the invention
The purpose of the application is the technical scheme for providing a kind of regulating and controlling temperature that can be independent and humidity.
In order to realize the purpose of the application, there is provided a kind of air-conditioning system, the air-conditioning system include：Fresh air module, this is new Wind module includes compressor, condenser and the evaporator fluidly connected, and the evaporator is used to enter the temperature and/or humidity of fresh air Row regulation and control；And thermal module, the stream of the thermal module carries out heat exchange with the stream of the fresh air module but not connected, described Thermal module is used for being regulated and controled using the temperature of side, and the thermal module includes：Heat exchanger, the heat exchanger be used for The stream through the heat exchanger of the fresh air module carries out heat exchange；Heat radiator, the heat radiator are located at the use It is connected in side and with the heat exchanger stream to form closing；Pump, the series connection of pumps is in the stream of the closing；It is wherein described Fresh air module includes two-way flash vessel, and the two-way flash vessel includes：First connecting tube, first connecting tube are communicated in the condensation Device and stretch into the flash vessel bottom；Second connecting tube, second connecting tube are communicated in the evaporator and stretch into the flash distillation Device bottom；And first connector and the second connector, first connector be located at the bottom of the flash vessel, second connection Mouth is located at the top of the flash vessel, and first connector is connected to the water inlet of the heat exchanger by the first check valve Mouthful, and the delivery port of the heat exchanger is connected to second connector by magnetic valve.
Preferably, the thermal module includes Fresh air handing device, and the Fresh air handing device is connected in parallel with the heat radiator, Regulate and control for the temperature to the fresh air and/or humidity.
Preferably, the Fresh air handing device and/or the heat exchanger in series have regulating valve.
Preferably, the compressor includes the first compressor and the second compressor of series connection, first compressor and the Two compressors are connected to four-way valve, with selectively to the condenser or evaporator trandfer fluid medium.
Preferably, the top of the two-way flash vessel is provided with gaseous phase outlet, and the gaseous phase outlet is connected to first pressure On stream between contracting machine and the second compressor.
Preferably, the condenser and evaporator are in series with first and the 3rd choke valve respectively.
Preferably, the air-conditioning system includes heat exchange bypass, and heat exchange bypass is parallel to the evaporator, and passes through described Heat exchanger, so that heat exchange can be carried out.
Preferably, the second check valve and/or second throttle are in series with the heat exchange bypass.
Preferably, in the flow direction of the fresh air, the Fresh air handing device and the evaporator from upstream toward downstream successively Arrangement.
In the technical scheme of the application, because fresh air module is mainly responsible for the regulation and control of temperature and/or humidity, without connecting In the regulation and control that the thermal module of fresh air module is used to be responsible for temperature, relatively independent therebetween, therefore, thermal module can be realized Using the temperature adjustment of side, fresh air module can carry out humidity (and/or temperature) regulation, thermal module and fresh air module to fresh air It is relatively independent, so as to eliminate cold-hot counteraction phenomenon, improve unit performance.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding of the present application, the schematic reality of the application Apply mode and its illustrate to be used to explain the application, do not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 a are the schematic diagram according to the attachment structure of the air-conditioning system of the application embodiment one；
Fig. 1 b are operation logic figure of the air-conditioning system under summer condition shown in Fig. 1 a；
Fig. 1 c are the pressure-enthalpy chart for representing refrigerant condition change in running under summer condition；
Fig. 1 d are the operation logic figure under the air-conditioning system shown in Fig. 1 a in the winter time operating mode；
Fig. 1 e are the pressure-enthalpy chart for representing refrigerant condition change in running under winter condition；
Fig. 2 a are the schematic diagram according to the attachment structure of the air-conditioning system of the application embodiment two；
Fig. 2 b are operation logic figure of the air-conditioning system under summer condition shown in Fig. 2 a；
Fig. 2 c are the operation logic figure under the air-conditioning system shown in Fig. 2 a in the winter time operating mode；
Fig. 3 a are the schematic diagram according to the attachment structure of the air-conditioning system of the application embodiment three；
Fig. 3 b are operation logic figure of the air-conditioning system under summer condition shown in Fig. 3 a；
Fig. 3 c are the operation logic figure under the air-conditioning system shown in Fig. 3 a in the winter time operating mode；
Fig. 4 a are the schematic diagram according to the attachment structure of the air-conditioning system of the application embodiment four；
Fig. 4 b are operation logic figure of the air-conditioning system under summer condition shown in Fig. 4 a；
Fig. 4 c are the operation logic figure under the air-conditioning system shown in Fig. 4 a in the winter time operating mode；
Fig. 4 d are the schematic diagram according to the another embodiment of the application.
Embodiment
The embodiment of the application described in detail below.It should be noted that in the case where not conflicting, the application In embodiment and the feature in each embodiment can be mutually combined.
As shown in drawings, this application provides a kind of air-conditioning system, the air-conditioning system to include：Fresh air module, the fresh air mould Block includes compressor, condenser 11 and the evaporator 12 fluidly connected, and the evaporator 12 is used for temperature and/or humidity to fresh air Regulated and controled；And thermal module, the stream of the thermal module carry out heat exchange with the stream of the fresh air module but not connected, institute Thermal module is stated to be used for using the temperature of side regulating and controlling.
Fresh air module is used to the outdoor fresh air by purification being incorporated into interior, so as to keep room air to have foot Enough cleanliness factors.In order to ensure indoor environment has good comfort level, using mainly including compressor, condenser and evaporator Fresh air module (as air-conditioning device), the temperature and/or humidity of the fresh air (flow of fresh air) of introducing are regulated and controled.When So, in order to realize the function of air-conditioning, fresh air module may also comprise other accessories, such as choke valve, refrigerant memory, this In be not described in detail, may be referred to realize using the composition structure and operation logic of traditional air-conditioning device.Due to fresh air The air conditioning function of module, the temperature and/or humidity of fresh air can be regulated and controled, the humidity of fresh air can especially be adjusted Control, so as to realize the regulation and control of the humidity in space.
Meanwhile thermal module is additionally provided with the technical scheme of the application, mainly to being regulated and controled using the temperature of side, The stream of the thermal module does not connect with the stream of fresh air module but can carry out heat exchange between each other, with to using side space The regulation and control of interior temperature.The so-called space for referring to treat regulating and controlling temperature and/or humidity using side, such as building space, meeting room people The place of dwelling activity, (multiple) room and/or (multiple) end especially in space.
In traditional air-conditioning system, in order to meet the requirement of dehumidifying, it is necessary to reduce evaporating temperature；On the other hand, in order to Meet the requirement of temperature, then need, by reheating, to improve wind pushing temperature.So, it is relatively low and make air-conditioning to be not only due to evaporating temperature Systematic function declines, and can also produce cold-hot counteraction phenomenon, waste the energy.
And in the technical scheme of the application, because fresh air module is mainly responsible for the regulation and control of temperature and/or humidity, without even The thermal module for passing through fresh air module is used for the regulation and control for being responsible for temperature, and relatively independent therebetween, therefore, thermal module can be real Now higher evaporating temperature, to adjust temperature, fresh air module can realize that low evaporating temperature carries out humidity (and/or temperature) and adjusted Section, to eliminate cold-hot counteraction phenomenon, improve unit performance.That is, in the technical scheme of the application, can be in the base of energy-conservation The independent control of temperature and humidity is realized on plinth.
The modules of the air-conditioning system of the application are described in detail separately below.
First,Thermal module
As shown in drawings, thermal module includes：Heat exchanger 20, the heat exchanger 20 are used to wear with the fresh air module The stream for crossing the heat exchanger carries out heat exchange；Heat radiator 21, the heat radiator 21 positioned at it is described using in side and with it is described The connection of heat exchanger 20 forms the stream of closing；Pump 22, the pump 22 are connected in the stream of the closing.
Heat exchanger 20 can according to operating mode and select suitable heat exchanger, such as plate type heat exchanger.In the heat exchanger 20 In, the stream of fresh air module and the neighbouring setting of the stream of thermal module, but do not connect, so as to realize the exchange of heat.Therefore, exist Hereinafter, when describing fresh air module and quote heat exchanger 20, it is generally understood that fresh air module passes through heat exchanger 20 Stream；When describing thermal module and quote heat exchanger 20, it can be understood as the stream that thermal module passes through heat exchanger. Certainly, heat exchanger 20 refers to the single unit system for realizing heat exchange herein.
Pump 22 be used in thermal module stream refrigerant (refrigerant can be refrigerating/thermit powder, hereinafter for Refrigerant can do similarly understand) provide driving force, with cause in the stream of thermal module fluid media (medium) (such as refrigerant or Water) according to predetermined state holding flowable.On the one hand hot friendship can be carried out by heat exchanger 20 and the stream of fresh air module Change, on the other hand make the media flow after heat exchange to heat radiator 20.Pump 22 can be selected to have according to operating mode and closed The pump installation of suitable technological parameter, such as gear pump, plunger pump.
Heat radiator 21, using in side, closing is formed because heat radiator, pump and heat exchanger 20 connect positioned at described Stream, therefore after the media flow after heat exchange to heat radiator 20, can be by the heat radiator 20 to using side Space carry out temperature adjusting, can either to raise using the temperature in side, it is also possible that reduced using the temperature in side, To reach predetermined temperature levels.Heat radiator 20 can be cold emission suspended ceiling or dry-type fan coil etc..
, can in order to control the operational factor of thermal module by the flow regime of medium in the stream of thermal module To be provided with the valve gear for realizing throttling or break-make.Or the flow of the pump 22 is also to adjust.
As described above, the main function of aeration device is the regulation and control for entering trip temperature and/or humidity to fresh air, but in preferred feelings Under condition, temperature adjusting can also be carried out to fresh air using thermal module.As shown in drawings, the thermal module includes Fresh air handing Device 23, the Fresh air handing device 23 are connected in parallel with the heat radiator 21, are carried out for the temperature to the fresh air and/or humidity Regulation and control.
Because Fresh air handing device 23 and heat radiator 12 are connected in parallel, therefore, when medium flows to all the way after heat exchange Heat radiator 21, so as to being regulated and controled using the temperature of side；And another way medium then enters Fresh air handing device 23, to fresh air Temperature is regulated and controled.The subsequent two-way medium converges again flows to pump 22.Preferably, in order that thermal module is adapted to different works Condition, as shown in drawings, the Fresh air handing device 23 and/or the heat exchanger 20 are in series with regulating valve.The Fresh air handing device 23 can be surface cooler or radiator etc..By the cooperation of valve in air-conditioning system, thermal module can be with relatively independent.
The annexation to thermal module and basic running are described in detail above.Hereinafter will also knot Each accompanying drawing is closed to be described in detail the running under its different operating mode.
2nd,Fresh air module
As described above, the main function of fresh air module is that the temperature and/or humidity of fresh air are adjusted using air-conditioning device Control.In the technical scheme of the application, in addition to using traditional air-conditioning device, different realities is provided for fresh air module Mode is applied, as indicated in the various figures.It is not detailed herein for traditional air-conditioning device, below in conjunction with accompanying drawing to fresh air The different embodiments of the different embodiments of module and corresponding whole air-conditioning system are described in detail.In addition, need It is noted that said temperature module is applied to following all embodiments.
2.1 embodiments one
Fig. 1 a to Fig. 1 e describe the technical scheme of embodiment one.
As shown in Fig. 1 a, Fig. 1 b and Fig. 1 d, the fresh air module includes the compressor, condenser 11 and evaporation fluidly connected Device 12, so-called fluidly connect refer to realize directly and/or indirectly fluid interaction between each other.In embodiment one, The fresh air module also includes two-way flash vessel 13, and the two-way flash vessel 13 includes：First connecting tube 131, first connecting tube 131 are communicated in the condenser 11 and stretch into the bottom of flash vessel 13；Second connecting tube 132, second connecting tube 132 connect In the evaporator 12 and stretch into the bottom of flash vessel 13；And first connector 133 and the second connector 134, this first Connector 133 is located at the bottom of the flash vessel 13, and second connector 134 is located at the top of the flash vessel 13, and described One connector 133 is connected to the water inlet of the heat exchanger 20 by the first check valve 139, and the heat exchanger 20 goes out The mouth of a river is connected to second connector 134 by magnetic valve 140.
It is so-called it is two-way refer to that the first connecting tube and the second connecting tube can be used as input pipe and efferent duct, therefore can pass through First connecting tube and the second connecting tube convey refrigerant medium to both direction.
When the liquid refrigerant medium under certain pressure is entered by one of the first connecting tube and the second connecting tube After two-way flash vessel 13, because the change of pressure flashes, steamed so as to form medium at the top of the two-way inner chamber of flash vessel 13 Vapour, and bottom is in accumulation media fluid.Then, the medium of liquid is flowed by the other of the first connecting tube and the second connecting tube Go out two-way flash vessel.
For the first connector 133 positioned at bottom, the medium of liquid can be led to by first connector 133 Cross the first check valve 139 and guide to heat exchanger 20.After the stream of the heat exchanger and thermal module completes heat exchange, then lead to Cross the second connector 134 and be back to two-way flash vessel.As illustrated in figs. 1A and ib, the second connector 134 is in series with magnetic valve 140, to control the break-make of stream at second connector 134.First check valve 139 only allows liquid medium from two-way flash vessel 13 outflows, without allowing fluid to flow to two-way flash vessel.The effect of the check valve 139 of valve 140 and first can also meet embodiment party The stream of formula one is adapted to different operating mode occasions, and this will be described below.
Compressor can be one or more, but under preferable case, as shown in Fig. 1 a, Fig. 1 b and Fig. 1 d, compressor includes The first compressor 101 and the second compressor 102 being connected in series, the compressor 102 of the first compressor 101 and second connect respectively Four-way valve is connected to, with selectively to the condenser 11 or the trandfer fluid medium of evaporator 12 (such as heat-carrying/cryogen).
The effect of four-way valve is, under different operating modes, the first compressor and the second compressor that are connected in series can be with Using four-way valve to condenser 11 or the discharge pressure medium of evaporator 12.For example, when carrying out refrigeration work, it is necessary to will come from The medium of evaporator 12 is delivered to condenser 11 after overcompression；And work as and heat work, it is necessary to which condenser 11 will be come from Medium evaporator 12 is delivered to after overcompression.Different mode of operations will be described below.Four-way valve can select Conventional structure type is selected, is not described in detail here.
First compressor and the second compressor can select the compressor of suitable technological parameter scope according to operating mode.It is preferred that In the case of, the first compressor and the second compressor have different technological parameters, such as volume, flow, pressure of inspiration(Pi), pressure at expulsion Deng.Under preferable case, the rated power of the first compressor is more than the rated power of the second compressor.
Using the design of double-compressor, refrigerant medium easily can be compressed to more physical states, so as to obtain Obtain working effect well.
Under preferable case, as illustrated in figs. 1A and ib, the top of two-way flash vessel 13 is provided with gaseous phase outlet 135, the gas Mutually outlet 135 is connected on the stream between the compressor 102 of the first compressor 101 and second, so as in predetermined situation Under gaseous medium can be supplemented in primary flow path.
Preferably, as illustrated in figs. 1A and ib, the condenser 11 and evaporator 12 are in series with first throttle valve respectively EEV1 and the 3rd choke valve EEV3.The effect of choke valve is to control the flow of refrigerant medium, while can adjust refrigerant Jie The physical state of matter, if the pressure of control refrigerant medium, so as to adjust enthalpy amount.
Preferably, the air-conditioning system includes heat exchange bypass, and the heat exchanger 20 is in series with heat exchange bypass, so as to Heat exchanger 20 is set to be parallel to the evaporator 12.It is further preferred that it is in series with the second check valve 136 in the heat exchange bypass And/or second throttle EEV2, to control the flow direction of refrigerant medium and flow.
The operation principle under different operating modes of the technical scheme of embodiment one is described below.
2.1.a summer condition
In summer condition, the function of mainly realizing is independent temperature-humidity control, has both reached the setting requirements of indoor environment, And can enough improves the performance of system, reduces energy consumption.Wherein, the side that uses in system can be the multiple ends in multiple rooms.
As shown in fig. 1b and fig. lc, low pressure refrigerant gas first passes through the second compressor 102 and is compressed to intermediateness point 2, Then the refrigerant gas with the middle pressure (state point 6 ') from two-way flash vessel is mixed to state point 3, then by the first compressor State point 4 is compressed to, exports high-temperature high-pressure refrigerant gas.
High-temperature high-pressure refrigerant gas passes through condenser 11, is condensed into high pressure refrigerant liquid, is throttled by EEV1 into Between state point 6, into two-way flash vessel 13.
In two-way flash vessel 13, upper part assembles the refrigerant gas of intermediate pressure, lower part aggregation intermediate pressure Refrigerant liquid.The refrigerant liquid of the two-way flash vessel lower part is divided into two strands：One passes through the by gravity force liquid-supply mode One connector 133 produces height via the feed flow of 139 heat exchanger of the first check valve 20 with higher evaporating temperature (medium temperature) Warm cold water, caused saturation refrigerant gas is flow back into two-way flash vessel 13 by the second connector 134 after evaporation；Another stock By choke valve EEV3 second throttle, into evaporator 12 (indoor set heat exchanger), with relatively low evaporating temperature to outdoor new Wind is dehumidified, and is then returned to by four-way valve in compressor.
And the middle compression refrigerant gas of the two-way flash vessel first half, the gas that compressor is compressed into HTHP is supplemented to again State refrigerant.
The high temperature cold water produced by heat exchanger 20, a part flow to Fresh air handing device 23 for after reheat dehumidification Fresh air, another part enter the heat radiator 21 of interior, are cooled for interior, now interior can make multiple rooms and/ Or multiple ends work simultaneously.
By foregoing description, in summer condition, high temperature cold water is produced by using thermal module, supplies heat radiation Device is that interior is cooled；Meanwhile outdoor fresh air is dehumidified using evaporator 12.Therefore, it is real that double evaporating temperatures are employed Existing independent temperature-humidity control, inherently realizes the performance boost of air-conditioning system (such as multi-joint machine cooling system).
2.1.b winter condition
In the winter time in operating mode, the function that air-conditioning system is mainly realized is to make the temperature of interior reach heating setting rapidly to want Ask, improve the comfort level experience of user.The runnability of air-conditioning system can be improved simultaneously.
As shown in figs. 1 d and 1e, low pressure refrigerant gas first passes through the first compressor 101 and is compressed to intermediateness point 2, Then mixed with middle pressure (state point 6 ') refrigerant gas from two-way flash vessel to state point 3, then by the second compressor 102 State point 4 is compressed to, discharges high-temperature high-pressure refrigerant gas.
High-temperature high-pressure refrigerant gas is divided into two strands：One is used to preheat the fresh air entered in room to state point 5, then State point 6 is throttled to by EEV3；Another strand enters heat exchanger 20, produces radiant heating hot water to state point 5, Ran Houtong Cross choke valve EEV2 to throttle to state point 6, after mixing with the refrigerant of another way, into two-way flash vessel 13.
The refrigerant gas of the two-way internal upper part of flash vessel 13 point aggregation intermediate pressure, lower part assemble the refrigeration of intermediate pressure Agent liquid.The middle compression refrigerant gas of the first half, is supplemented to compressor, the second vapor injection as two stages of compression by pipeline.And Refrigerant liquid in two-way flash vessel, enter after choke valve EEV1 second throttles in condenser 11 and evaporate, be then return to In compressor, one cycle is completed.
The heating hot water produced, sub-fraction flow to Fresh air handing device 23, for reheating outdoor fresh air, another part The heat radiator 21 of interior is entered, the temperature in room is reached heating requirement.
By above description, the air-conditioning system of embodiment one first pass through at evaporator as fan coil carries out fluorine Air heat-exchange and water air heat-exchange, fresh air is preheated, the fresh air for making to enter in room is in higher temperature；Also use heat radiation Device 21 directly heats the room air of radiation tail end, can be rapidly reached interior and require temperature.With traditional only with routine Radiant heating is compared, and is largely shortened and is brought into operation from system to the time for reaching indoor heating requirement.Moreover, from the winter Season operating mode operation logic in as can be seen that its circulation be single condensation temperature and evaporating temperature, but because it is used pair Level compressibility, for being compressed than conventional single stage, reduces pressure ratio, so as to improve the performance of system.
2.2 embodiments two
Fig. 2 a to Fig. 2 c describe the technical scheme of presently filed embodiment two.
As shown in Fig. 2 a to Fig. 2 c, compressor 30 is connected with four-way valve, with selectively to the condenser 11 or evaporation The trandfer fluid medium of device 12.Similar to embodiment one, the effect of four-way valve is, under different operating modes, makes compressor can To utilize four-way valve to condenser 11 or the discharge pressure medium of evaporator 12.
In embodiment two, in the case where the compressor 30 conveys to the condenser 11, the heat exchanger 20 are connected in parallel with the evaporator 12；And in the case where the compressor conveys to the evaporator 12, the compression Machine is connected to the condenser 11, and the evaporator 12 and the heat exchanger 20 and condensation by the heat exchanger 20 Stream between device 11 is connected in parallel.
When compressor 30 is to 11 conveying high-pressure refrigerant medium of condenser, the medium by condensation is through over-heat-exchanger 20 Exchanged heat, so that the medium in thermal module is in required physical state.Meanwhile by the processing of evaporator 12, Dehumidification treatments can be carried out to fresh air.When compressor 30 is to 12 pumped (conveying) medium of evaporator, the pressure medium first passes around hot friendship Parallel operation 20 carries out heat exchange processing, to meet the needs of thermal module.The medium part flow direction condensation flowed out from heat exchanger 20 Device 11, another part flow to evaporator 12 to enter the regulation and control of trip temperature and/or humidity to fresh air.Above-mentioned operating mode will be hereinafter detailed Thin description.
As shown in Fig. 2 a to Fig. 2 c, it is preferable that the upstream tandem of evaporator 12 has reheater 14, and the reheater 14 is used for institute The temperature for stating fresh air is regulated and controled, so as to do more accurately temperature control to fresh air using reheater 14.Preferable case Under, in order that the technical scheme of embodiment two is applied to different operating modes, as illustrated, the upstream tandem of reheater 14 has point The fluid for coming from the condenser 11 is not only allowed to flow to the reheater and only allow to come from the heat exchanger 20 Fluid flows to two upstream one-way valves 137,137 ' of the reheater, the downstream tandem of evaporator 12 have only allow fluid from The evaporator 12 flows to two downstream one-way valves 138,138 ' of the compressor and condenser respectively.It is unidirectional using above-mentioned two pairs Valve can control the flow direction of refrigerant medium, so as to allow system to be applied to different operating mode occasions.
Preferably, the heat exchanger 20 is in series with first throttle valve EEV1 and the 3rd choke valve EEV3；And/or the steaming The upstream tandem of hair device 12 has second throttle EEV2, to control the flow direction of refrigerant medium and flow.It is further preferred that such as figure institute Show, the stream between the stream between evaporator 12 and reheater 14 and described first and the 3rd choke valve EEV1, EEV3 passes through Valve 141 and connect.By the control of valve 141, air-conditioning system can be made selectively to perform dehumidification function.
The attachment structure of embodiment two described in detail above, describe below embodiment two technical scheme not With the operation principle under operating mode.
2.2.a summer condition
As shown in Figure 2 b, the refrigerant for the HTHP that compressor 30 is discharged passes through four-way valve, (outdoor into condenser 11 Air cooling heat exchanger) cooling is into being divided into two-way after cryogenic high pressure liquid：Cryogenic high pressure refrigerant liquid is unidirectional through a upstream all the way Valve 137 enters reheater 14, and the fresh air after dehumidifying is heated, and refrigerant passes through choke valve EEV2 throttling expansion afterwards Afterwards, carry out cool-down dehumidification to outdoor fresh air into evaporator 12, low-pressure gaseous refrigerant after evaporation by four-way valve further through One downstream one-way valve 138 flows back to compressor；Unnecessary refrigerant along bypass pipe (passing through magnetic valve 2), flows into the by valve 141 The one choke valve EEV1 port of export.After the refrigerant of the port of export of the another way refrigerant with flowing into first throttle valve EEV1 mixes, By EEV3 expansion throttlings, into heat exchanger 20, so as to carry out heat exchange with temperature control module, to produce high temperature cold water, so as to For Fresh air handling units by the precooling fresh air of Fresh air handing device 23, and realize by heat radiator 21 cooling of indoor end.Then, should Another way refrigerant flows back to compressor also by four-way valve, completes one cycle.
Wherein, the break-make of valve 141 (such as magnetic valve) is used to switch dehumidification mode and non-dehumidification mode, first throttle valve EEV1 Aperture regulation be used for adjust by reheater 14 refrigerant and trunk roads on refrigerant flow, meet different reheating It is required that.
By foregoing description, under summer condition, directly prepared in high temperature cold water supply chamber by heat exchanger 20 Radiation cooling；Using cryogenic vaporizer by fluorine air heat-exchange, outdoor fresh air is dehumidified.Realize independent temperature-humidity control, System energy consumption is relatively low.
2.2.b winter condition
In the technical scheme of embodiment two, winter condition has two kinds of subpatterns：Heat dehumidification mode and individually heating Pattern.
1) dehumidification mode is heated
The high temperature and high pressure gaseous refrigerant that compressor 30 is discharged, enters heat exchanger 20 by four-way valve, passes through heat exchange Produce heating low-temperature water heating.
Condensed high pressure liquid refrigerant is divided into two-way：Refrigerant enters reheating through another upstream one-way valve 137 ' all the way Device 14, the fresh air after dehumidifying is heated, while the degree of supercooling of refrigerant further increases；Afterwards, part of refrigerant passes through The bypass for crossing valve 141 is collected on the 3rd choke valve EEV3 export pipelines, and some refrigerant is through second throttle EEV2 Throttling expansion after, into evaporator 12 to outdoor fresh air carry out cool-down dehumidification, and through another downstream one-way valve 138 ' return Converged to the gas-liquid two-phase cold-producing medium in first throttle valve EEV1 outlet, with the major loop after first throttle valve EEV1 throttlings Close.Meanwhile from heat exchanger 20 flow out another way high pressure liquid refrigerant after the 3rd choke valve EEV3 slightly decompression, with After the refrigerant mixing bypassed by reheater, by first throttle valve EEV1 expansion throttling, then with from dehumidify evaporimeter 12 Enter condenser 12 (outside air cooling heat exchanger) after the gaseous refrigerant mixing returned through another downstream one-way valve 138 ', then Through four-way valve, gas-liquid separator, compressor is back to, completes one cycle.
Wherein, the 3rd choke valve EEV3 of different opening is adjusted, refrigerant and trunk by reheater 14 can be adjusted The flow of refrigerant on road, meet different heat requests again.By heat exchanger 20, the heating produced by thermal module is used Hot water is divided into two-way, is delivered to heat radiator 21 all the way, so as to directly carry out temperature adjustment to end；Another way is delivered to fresh air Fresh air handing device 23 (surface cooler), is preheated to fresh air in unit.
2) independent heating mode
Second throttle EEV2 and valve 141 are closed, and keep the 3rd choke valve EEV3 standard-sized sheets.Now, because the second section Valve EEV2 is flowed to close, so without cold-producing medium stream pervaporation device 12, therefore without dehumidification function.Moreover, it can only now utilize low temperature Hot water heating fresh air in Fresh air handing device 23 (surface cooler).And when second throttle EEV2 is closed and valve 141 is opened, can be with Fresh air is further heated by reheater 14 using the high-pressure refrigerant of supercooled state.
By above description, in the winter time under pattern, the technical scheme of embodiment two can either be carried out in advance to fresh air Heat treatment, it can also use heat radiator 21 to directly heat the room air of radiation tail end, interior can be made to be rapidly reached requirement Temperature.
2.3 embodiments three
Fig. 3 a to Fig. 3 c describe the technical scheme of embodiment three.
As shown in Fig. 3 a to Fig. 3 c, compressor 30 is connected with four-way valve, with selectively to the condenser 11 or evaporation The trandfer fluid medium of device 12.Similarly, the effect of four-way valve is, under different operating modes, compressor is utilized four-way Valve is to condenser 11 or the discharge pressure medium of evaporator 12.In embodiment three, the condenser 11 and the heat exchanger 20 are connected in series, and the evaporator 12 is connected in parallel with the condenser 11 and heat exchanger 20 connected, and evaporator 12 enters Mouth is connected on the stream between the exhaust outlet of the compressor 30 and the four-way valve.
Preferably, as illustrated, the upstream tandem of the evaporator 12 has reheater 14, the reheater 14 is used for described new The temperature of wind is regulated and controled, so as to do more flexible regulation and control to the temperature of fresh air.
As illustrated, the upstream tandem of reheater 14 has valve 142；And/or between the reheater 14 and the evaporator 12 Second throttle EEV2 is in series with, therefore on the one hand the flow of refrigerant medium can be regulated and controled, while it is also possible that The technical scheme of embodiment three can adapt in different operating modes, and this will be described below.More preferably, it is described cold Condenser 11 is in series with first throttle valve EEV1, and the heat exchanger 20 is connected in series with the 3rd choke valve EEV3.
The attachment structure of embodiment three described in detail above, describe below embodiment three technical scheme not With the operation principle under operating mode.
2.3.a summer condition
In summer condition, first throttle valve EEV1 standard-sized sheets.The high-temperature high-pressure refrigerant that compressor 30 is discharged is divided into two-way, Enter four-way valve all the way, another way (bypass branch) carries out reheating into reheater 14 to the air after dehumidifying.The bypass branch Refrigerant flow (i.e. heat again) adjusted by valve 142 (such as magnetic valve).Refrigerant after reheater 14 passes through again After second throttle EEV2 expansion throttling, cool-down dehumidification is carried out to outdoor fresh air into dehumidify evaporimeter 12.；Into four-way valve HTHP refrigerant enter condenser 11 cooling, be changed into cryogenic high pressure liquid, by the swollen of the 3rd choke valve EEV3 After swollen throttling, high temperature cold water is produced into heat exchanger 20.Finally, two-way refrigerant collects before gas-liquid separator, with laggard Enter compressor 30, complete one cycle.
In thermal module, the high temperature cold water produced, part bypass preheats to surface cooler to fresh air, another part The indoor temperature of end is adjusted into heat radiator 21.
By above description, under summer condition, high temperature cold water supply chamber can directly be prepared by heat exchanger Interior radiation cooling；Cryogenic vaporizer 12 is dehumidified by fluorine air heat-exchange to outdoor fresh air simultaneously.Therefore, it is possible to realize The independent control of humiture, and system energy consumption is relatively low.
2.3.b winter condition
In the winter time under operating mode, when needing dehumidifying operation, the 3rd choke valve EEV3 standard-sized sheets.The HTHP of compressor discharge For refrigerant before four-way valve is entered, bypass carries out reheating into reheater 14 to the air after dehumidifying all the way.The bypass branch Refrigerant flow (i.e. heat again) is adjusted by valve 142, and dehumidifying is entered after second throttle EEV2 expansion throttling and is steamed Send out device 12 and cool-down dehumidification is carried out to outdoor fresh air.
The refrigerant of another way HTHP produces heating hot water after four-way valve, into heat exchanger.Passed through after After crossing first throttle valve EEV1 expansion throttling, into condenser 11, it is changed into the gaseous refrigerant of low pressure, in gas-liquid separator Before, after collecting with the refrigerant of dehumidify evaporimeter, compressor is back to, completes one cycle.
In the winter time under operating mode, when needing individually heating, second throttle EEV2 and valve 142 are turned off, without refrigerant By reheater 14 and evaporator 12.Now, only the refrigerant of HTHP carries out heat exchange to produce by heat exchanger 20 Heating hot water.
Due to the equipment of reheater and evaporator as the dehumidification treatments to fresh air, with the VRV systems maximum of in the market Difference is：The high-pressure gas pipe that can be connected from exhaust outlet of compressor, reheater and steaming can be passed through without four-way valve The low-pressure gas pipe of the air entry connection of compressor is connected to after hair device, consequently, it is possible to which it can meet Summer and winter dehumidification.Together When the program, a large amount of uses for reducing valves, simplify control, be more easily implemented system.
By above description, in the winter time under pattern, the technical scheme of embodiment three can either be carried out in advance to fresh air Heat treatment, it can also use heat radiator 21 to directly heat the room air of radiation tail end, interior can be made to be rapidly reached requirement Temperature.
In addition, using valve 142 and second throttle EEV2 cooperation, the selection to dehumidification function can be realized.
2.4 embodiments four
Fig. 4 a to Fig. 4 c describe the technical scheme of presently filed embodiment four.
As shown in Fig. 4 a to Fig. 4 c, compressor 30 is connected with four-way valve, with selectively to the condenser 11 or evaporation The trandfer fluid medium of device 12.Similar to embodiment one, the effect of four-way valve is, under different operating modes, makes compressor can To utilize four-way valve to condenser 11 or the discharge pressure medium of evaporator 12.
In embodiment four, the entrance of the evaporator 12 be connected to the condenser 11 and the heat exchanger 20 it Between stream on, the outlet of the evaporator 20 is connected to the air entry of the compressor 30.Therefore, when compressor 30 is to condensation During 11 pumped (conveying) medium of device, evaporator 12 and heat exchanger 20 will be branched to by flowing through the medium of condenser 11；And when compressor 30 to During 20 pumped (conveying) medium of heat exchanger, medium will branch to evaporator 12 and condenser 11.The operating mode will more fully below Described.
As illustrated, under preferable case, the air-conditioning system includes reheater 14, and the entrance of the reheater 14 is connected to institute State on the stream between the exhaust outlet of compressor 30 and the four-way valve, the outlet of the reheater 14 is connected to the condenser On stream between 11 and the heat exchanger 20.Due to being provided with reheater 14, therefore the temperature of fresh air can be carried out more For reliable regulation and control.Further, since the entrance of reheater 14 is connected with the exhaust outlet of compressor 30, therefore the conveying of compressor 30 Fluid media (medium) will branch to above-mentioned four-way valve and reheater 14.
In order to meet the control to medium flow direction and be adapted to different working condition requirements, it is preferable that the condenser 11 It is in series with first throttle valve EEV1；The evaporator 12 is in series with second throttle EEV2；The heat exchanger 20 is in series with Three choke valve EEV3；And/or the reheater 14 is in series with the 4th choke valve EEV4.Can also be to medium using these choke valves Physical state regulated and controled, such as pressure and flow.
The attachment structure of embodiment four described in detail above, describe below embodiment four technical scheme not With the operation principle under operating mode.
2.4.a summer condition
In cooling in summer removes wet cooling condition, first throttle valve EEV1 standard-sized sheets.The high-temperature high-pressure refrigerant that compressor 30 is discharged Before four-way valve is entered, bypass carries out reheating into reheater 14 to the air after dehumidifying all the way.The refrigerant of the bypass branch Flow (i.e. heat again) is adjusted by the 4th choke valve EEV4.Dropped by the another way refrigerant of four-way valve into condenser 11 Temperature after collecting with the refrigerant from reheater 14, is divided into two-way into cryogenic high pressure liquid.First via refrigerant is by the second section After the expansion throttling for flowing valve EEV2, cool-down dehumidification is carried out to outdoor fresh air into dehumidify evaporimeter 12；Second road refrigerant passes through After 3rd choke valve EEV3 expansion throttling, high temperature cold water is produced into heat exchanger 20.Finally, two-way refrigerant is in gas-liquid point From collecting before device, into compressor, one cycle is completed.
By foregoing description, under summer condition, directly prepared in high temperature cold water supply chamber by heat exchanger Radiation cooling；Cryogenic vaporizer 12 is dehumidified by fluorine air heat-exchange to outdoor fresh air.It is thereby achieved that humiture is independently controlled System, system energy consumption are relatively low.
2.4.b winter condition
Heat in the winter time under dehumidification mode, the 3rd choke valve EEV3 standard-sized sheets.The high-temperature high-pressure refrigerant that compressor 30 is discharged Before four-way valve is entered, bypass carries out reheating into reheater 14 to the air after dehumidifying all the way.The refrigerant of the bypass branch Flow (i.e. heat again) is adjusted by the 4th choke valve EEV4.Refrigerant by the another way HTHP of four-way valve enters heat Exchanger produces heating hot water.Two-way is then separated into, enters dehumidifying after second throttle EEV2 expansion throttling all the way Evaporator 12 carries out cool-down dehumidification to outdoor fresh air；After another way is collected with the refrigerant from reheater 14, by first segment After the expansion throttling for flowing valve EEV1, before gas-liquid separator, after collecting with the refrigerant of dehumidify evaporimeter 12, compression is back to Machine, complete one cycle.
In the winter time under simple heating mode, valve EEV2,4 are closed, and reheater 14 does not walk refrigerant with evaporator 12.Compression The high-temperature high-pressure refrigerant that machine 30 is discharged is no longer flow towards reheater 14, but only flows to heat exchanger 20.
Due to the equipment of reheater and evaporator as the dehumidification treatments to fresh air, the path direction of its Summer and winter refrigerant Do not change, therefore the difference of program maximum is：From the high-pressure gas pipe of exhaust outlet of compressor connection, without four-way Valve and by reheater and the low-pressure gas pipe that compressor air suction mouth is connected to after evaporator connects, consequently, it is possible to which it can meet Summer and winter dehumidification.The program simultaneously, a large amount of uses for reducing valve, simplify control, is more easily implemented system.In addition, Reheater 14 and the refrigerant flow of dehumidify evaporimeter 12 can be adjusted independently of each other, can realize the accurate of air parameter Control.
By above description, in the winter time under pattern, the technical scheme of embodiment four can either be carried out in advance to fresh air Heat treatment, it can also use heat radiator 21 to directly heat the room air of radiation tail end, interior can be made to be rapidly reached requirement Temperature.
The attachment structure of different embodiments and its running and principle under different operating modes are respectively described above. On the premise of no technical contradiction or contradiction, the feature of above-mentioned different embodiments can be combined with each other or use for reference, here not Repeat description.For example, as shown in drawings, in the flow direction of fresh air, the Fresh air handing device 23, the evaporator 12 and described Reheater 14 (reheater 14 can omit in some embodiments) is arranged in order from upstream toward downstream, so as to the temperature to fresh air And/or humidity is more reliably and accurately adjusted.
According to such arrangement, such as when cooling in summer dehumidifies and run, the air of outdoor high temperature high humidity first passes through 23, now The refrigerant temperature being passed through in 23 is identical with the temperature of radiator, usually 16-18 DEG C, and fresh air, which first passes through, is connected with 16-18 DEG C of refrigerant Fresh air handing device 23 carry out precooling cooling, humiture is reduced to 20-23 DEG C or so, and humidity is close to after saturation, then passes through evaporation Device 12.What is be now passed through in evaporator 12 is 0-8 DEG C of refrigerant, and fresh air further cools by evaporator 12, passes through 23 originally Air is just already close to saturation afterwards, now again by evaporator 12 after, air can further cool, while the saturation water in air It can largely separate out, form good dehumidifying effect.Fresh air after dehumidifying, then heated up by reheater 14, now reheater Between refrigerating/thermal medium temperature in 14 is 30-60 DEG C, fresh air is sent into interior after reheater reheats to 20 DEG C or so, this Process causes outdoor air to have passed through cooling, cool-down dehumidification, the process of heating, can by the design of hardware and the control of software To realize the accurate regulation to air, reach the state required for system.
By tactic mode, fresh air can pass through the flowing of long period, and be carried out fully between heat exchanger Cold and hot exchange, the accurate regulation to air provide great convenience.
This is not limited to for the above-mentioned the application that puts in order, above-mentioned Fresh air handing device 23, evaporator 12 and reheater 14 It can also be put in order with others.
In addition, being improved on the basis of embodiment four, embodiment as shown in figure 4d can be obtained, wherein, Fresh air handing device 23 can dispense.In embodiment one to three, Fresh air handing device 23 can also be optionally omitted.Scheming In embodiment shown in 4d, the operation logic and process of summer condition and winter condition may be referred to embodiment four, simultaneously Defrosting mode can be also realized, its operation logic and process refer to shown in Fig. 4 d, be not detailed herein.
In addition, as shown in drawings, oil (i.e. oil eliminator) can also be set, by refrigerant medium within air-conditioning systems Interior lubricating oil separation comes out, it is ensured that the reliability service of system.
The better embodiment of the application is the foregoing is only, it is all the application's not to limit the application Within spirit and principle, any modification, equivalent substitution and improvements made etc., it should be included within the protection domain of the application.
Claims (9)
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