CN107940636A - Air-conditioning system - Google Patents

Air-conditioning system Download PDF

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Publication number
CN107940636A
CN107940636A CN201711027297.0A CN201711027297A CN107940636A CN 107940636 A CN107940636 A CN 107940636A CN 201711027297 A CN201711027297 A CN 201711027297A CN 107940636 A CN107940636 A CN 107940636A
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CN
China
Prior art keywords
fresh air
air
temperature
heat exchanger
evaporator
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Granted
Application number
CN201711027297.0A
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Chinese (zh)
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CN107940636B (en
Inventor
宋波
李艳杰
罗朝敏
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Tsinghua University
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National Security (beijing) Technology Co Ltd
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Priority to CN201711027297.0A priority Critical patent/CN107940636B/en
Publication of CN107940636A publication Critical patent/CN107940636A/en
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Publication of CN107940636B publication Critical patent/CN107940636B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-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
    • F24F5/0007Air-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
    • F24F5/001Compression cycle type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

Abstract

This application provides a kind of air-conditioning system, including:Fresh air module, the fresh air module include compressor, condenser and the evaporator fluidly connected, which is used to regulate and control the temperature and/or humidity of fresh air, and compressor is connected with four-way valve;And thermal module, the flow path of the thermal module carry out heat exchange with the flow path of fresh air module but do not connect, thermal module is used for being regulated and controled using the temperature of side, and thermal module includes:Heat exchanger, heat exchange is carried out for the flow path through the heat exchanger with fresh air module;Heat radiator, the flow path to form closing is connected with heat exchanger;Pump, is connected in the flow path of closing, condenser is connected with heat exchanger in series, and evaporator is connected in parallel with the condenser and heat exchanger connected, and the entrance of evaporator is connected on the flow path between the exhaust outlet of compressor and four-way valve.According to the air-conditioning system of the application, the independent control of temperature and humidity can be realized on the basis of energy saving.

Description

Air-conditioning system
Technical field
This application involves environmental area, more particularly to a kind of air-conditioning system that can control temperature and humidity relatively independently System.
Background technology
Currently, requirement of the people for life or living environment is higher and higher, thus in more and more space equipped with The air-conditioning system of multi-connected machine, so as to enabling comfort level of the people in activity space to be lifted.In order to obtain higher environment Comfort level, not only needs 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 become the technical issues that need to address.
The content of the invention
The purpose of the application is the technical solution 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 the compressor, condenser and the evaporator that fluidly connect, the evaporator be used for the temperature of fresh air and/or humidity into Row regulation and control, the compressor is connected with four-way valve, with selectively to the condenser or evaporator trandfer fluid medium;And temperature Module is spent, the flow path of the thermal module carries out heat exchange with the flow path of the fresh air module but do not connect, and the thermal module is used In to being regulated and controled using the temperature of side, the thermal module includes:Heat exchanger, the heat exchanger are used for and the fresh air mould The flow path through the heat exchanger of block carries out heat exchange;Heat radiator, the heat radiator positioned at it is described using in side and with institute State heat exchanger and connect the flow path to form closing;Pump, the series connection of pumps in the flow path of the closing, wherein, the condenser and The heat exchanger in series connection, the evaporator are connected in parallel with the condenser and heat exchanger connected, the evaporation The entrance of device is connected on the flow path between the exhaust outlet of the compressor and the four-way valve.
Preferably, the thermal module includes Fresh air handing device, which 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 vaporizer upstream is in series with reheater, which is used to adjust the temperature of the fresh air Control.
Preferably, the reheater upstream tandem has valve;And/or is in series between the reheater and the evaporator Two throttle valves.
Preferably, the condenser is in series with first throttle valve, and the heat exchanger in series is connected with the 3rd throttle valve.
Preferably, in the flow direction of the fresh air, the Fresh air handing device, the evaporator and the reheater are from upstream Downstream it is arranged in order.
In the technical solution of the application, since 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) to fresh air and adjust, thermal module and fresh air module It is relatively independent, so as to eliminate cold-hot counteraction phenomenon, improve unit performance.
Brief description of the drawings
The attached 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 explanation is 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 connection 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 operational process 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 operational process under winter condition;
Fig. 2 a are the schematic diagram according to the connection 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 connection 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 connection 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 there is no conflict, 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, which is used for temperature and/or humidity to fresh air Regulated and controled;And thermal module, the flow path of the thermal module carry out heat exchange with the flow path of the fresh air module but do not connect, institute Thermal module is stated to be used for using the temperature of side regulating and controlling.
Fresh air module is used to that interior will to be incorporated into by the outdoor fresh air of purification, 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 throttle 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, can regulate and control the temperature and/or humidity of fresh air, especially the humidity of fresh air can be adjusted Control, so as to fulfill the regulation and control of the humidity in space.
Meanwhile thermal module is additionally provided with the technical solution of the application, mainly to being regulated and controled using the temperature of side, The flow path of the thermal module does not connect with the flow path 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.In this way, it is relatively low and make air-conditioning to be not only due to evaporating temperature System performance declines, and can also produce cold-hot counteraction phenomenon, waste the energy.
And in the technical solution of the application, since 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 adjusts Section, to eliminate cold-hot counteraction phenomenon, improves unit performance.That is, in the technical solution of the application, can be in energy saving base 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 flow path 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 flow path of closing;Pump 22, which is connected in the flow path of the closing.
Heat exchanger 20 can according to operating mode and select suitable heat exchanger, such as plate heat exchanger.In the heat exchanger 20 In, the flow path of fresh air module and the neighbouring setting of the flow path of thermal module, but do not connect, so as to fulfill 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 Flow path;When describing thermal module and quote heat exchanger 20, it can be understood as the flow path 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 flow path refrigerant (refrigerant can be refrigerating/thermit powder, hereinafter for Refrigerant can do similarly understand) provide driving force so that in the flow path 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 flow path 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 since heat radiator, pump and heat exchanger 20 connect positioned at described Flow path, therefore after the media flow after heat exchange to heat radiator 20, can be by the heat radiator 20 to using side Space regulate and control into trip temperature, 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 operating parameter of thermal module by the flow regime of medium in the flow path of thermal module To be provided with the valve gear for being used for realization throttling or break-make.Alternatively, the flow of the pump 22 is also to adjust.
As described above, the main function of aeration device is the regulation and control into trip temperature and/or humidity to fresh air, but in preferred feelings Under condition, thermal module can also be utilized to regulate and control fresh air into trip temperature.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.
Since Fresh air handing device 23 and heat radiator 12 are connected in parallel, 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 flow direction pump 22 again.Preferably, in order to make thermal module be 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 relatively independent.
The connection relation to thermal module and basic operational process are described in detail above.Hereinafter will also knot Each attached drawing is closed to be described in detail the operational process 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 solution 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 attached 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 above-mentioned thermal module is suitable for following all embodiments.
2.1 embodiments one
Fig. 1 a to Fig. 1 e describe the technical solution 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 further includes two-way flash vessel 13, which includes:First connecting tube 131, first connecting tube 131 are communicated in the condenser 11 and stretch into 13 lower part of flash vessel;Second connecting tube 132, second connecting tube 132 connect In the evaporator 12 and stretch into 13 lower part of flash vessel;And first connector 133 and the second connector 134, this first Connector 133 is located at the lower part of the flash vessel 13, which 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 solenoid 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, since the change of pressure flashes, steamed so as to form medium at the top of two-way 13 inner cavity of flash vessel 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 lower part, 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 flow path 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 solenoid valve 140, to control the break-make of flow path 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 140 and first check valve 139 of valve can also meet embodiment party The flow path of formula one is adapted to different operating mode occasions, 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, 101 and second compressor 102 of the first compressor connect respectively Four-way valve is connected to, with selectively to the condenser 11 or 12 trandfer fluid medium of evaporator (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 12 discharge pressure medium of condenser 11 or evaporator.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 carry out heating work, it is necessary to which condenser 11 will be come from Medium evaporator 12 is delivered to after overcompression.Different operating modes will be described below.Four-way valve can select Common 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 flow path between 101 and second compressor 102 of the first compressor, so that 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 throttle valve EEV3.The effect of throttle valve is to control the flow of refrigerant medium, while can adjust refrigerant Jie The physical state of matter, can such as control the pressure of 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 that 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 solution 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, The performance of system can be improved again, reduce 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, throttles by EEV1 into Between state point 6, into two-way flash vessel 13.
In two-way flash vessel 13, the refrigerant gas of upper moiety aggregation 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 139 heat exchanger of the first check valve, 20 feed flow with higher evaporating temperature (medium temperature) Warm cold water, the saturation refrigerant gas produced after evaporation are flow back into two-way flash vessel 13 by the second connector 134;Another stock By the second throttle of throttle valve EEV3, into evaporator 12 (indoor set heat exchanger), with relatively low evaporating temperature to outdoor new Wind dehumidifies, 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, and it is supplemented to the gas that compressor is compressed into high temperature and pressure 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 indoor heat radiator 21, cool down for interior, at this time interior can make multiple rooms and/ Or multiple ends work at the same time.
By foregoing description, in summer condition, high temperature cold water is produced by using thermal module, supplies heat radiation Device cools down for interior;Meanwhile dehumidified using evaporator 12 to outdoor fresh air.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 indoor temperature reach heating setting rapidly to want Ask, improve the comfort level experience of user.The runnability of air-conditioning system can be improved at the same time.
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, which is used to preheating, enters fresh air 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 throttle 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 two-way 13 internal upper part of flash vessel 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, evaporation in condenser 11 is entered after throttle valve EEV1 second throttles, is 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 Indoor heat radiator 21 is entered, the temperature in room is reached heating requirement.
As can be seen from the above description, the air-conditioning system of embodiment one first pass through at evaporator as fan coil carry out fluorine Air heat-exchange and water air heat-exchange, preheat fresh air, and 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 since 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 solution 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 12 trandfer fluid medium of device.Similar to embodiment one, the effect of four-way valve is, under different operating modes, makes compressor can To utilize four-way valve to 12 discharge pressure medium of condenser 11 or evaporator.
In embodiment two, in the case where the compressor 30 is conveyed to the condenser 11, the heat exchanger 20 are connected in parallel with the evaporator 12;And in the case where the compressor is conveyed 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 Flow path 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 Exchange 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, which 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 with the regulation and control to fresh air into trip temperature and/or humidity.Above-mentioned operating mode will be hereinafter detailed Thin description.
As shown in Fig. 2 a to Fig. 2 c, it is preferable that 12 upstream tandem of evaporator has reheater 14, which 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 to enable the technical solution of embodiment two is suitable for different operating modes, as shown in the figure, 14 upstream tandem of reheater 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, 12 downstream tandem of evaporator 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 suitable for different operating mode occasions.
Preferably, the heat exchanger 20 is in series with first throttle valve EEV1 and the 3rd throttle 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 flow path between the flow path between evaporator 12 and reheater 14 and described first and the 3rd throttle 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 connection structure of embodiment two described in detail above, describe below embodiment two technical solution not With the operation principle under operating mode.
2.2.a summer condition
As shown in Figure 2 b, the refrigerant for the high temperature and pressure 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 the throttling expansion of throttle valve EEV2 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 solenoid valve 2), flows into the by valve 141 The port of export of one throttle valve EEV1.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 that heat exchange is carried out with temperature control module, to produce high temperature cold water, so that For Fresh air handling units by 23 precooling fresh air of Fresh air handing device, 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 solenoid 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, by heat exchanger 20 directly prepare high temperature cold water supply it is indoor Radiation cooling;Using cryogenic vaporizer by fluorine air heat-exchange, dehumidify to outdoor fresh air.Realize independent temperature-humidity control, System energy consumption is relatively low.
2.2.b winter condition
In the technical solution 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, heats the fresh air after dehumidifying, 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 throttle valve EEV3 export pipelines, 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 the outlet of first throttle valve EEV1, 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 slightly decompression of the 3rd throttle valve EEV3, with After the refrigerant mixing bypassed by reheater, by the expansion throttling of first throttle valve EEV1, 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 throttle valve EEV3 of different opening is adjusted, refrigerant and trunk by reheater 14 can be adjusted The flow of refrigerant on road, meets 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), preheats fresh air in unit.
2) independent heating mode
Second throttle EEV2 and valve 141 are closed, and keep the 3rd throttle valve EEV3 standard-sized sheets.At this time, because the second section Valve EEV2 is flowed to close, so no refrigerant flows through evaporator 12, therefore without dehumidification function.Moreover, low temperature can only be utilized at this time 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.
As can be seen from the above description, in the winter time under pattern, the technical solution of embodiment two can either carry out in advance fresh air Heat treatment, 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 solution 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 12 trandfer fluid medium of device.Similarly, the effect of four-way valve is, under different operating modes, compressor is utilized four-way Valve is to 12 discharge pressure medium of condenser 11 or evaporator.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 flow path between the exhaust outlet of the compressor 30 and the four-way valve.
Preferably, as shown in the figure, 12 upstream tandem of the evaporator has reheater 14, which 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 shown in the figure, 14 upstream tandem of reheater 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 solution of embodiment three can adapt in different operating modes, 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 throttle valve EEV3.
The connection structure of embodiment three described in detail above, describe below embodiment three technical solution 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 solenoid valve).Refrigerant after reheater 14 passes through again After the expansion throttling of second throttle EEV2, cool-down dehumidification is carried out to outdoor fresh air into dehumidify evaporimeter 12.;Into four-way valve High temperature and pressure refrigerant enter condenser 11 cooling, be changed into cryogenic high pressure liquid, by the swollen of the 3rd throttle 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 fresh air to surface cooler, another part The indoor temperature of end is adjusted into heat radiator 21.
As can be seen from the above description, under summer condition, high temperature cold water supply chamber can directly be prepared by heat exchanger Interior radiation cooling;Cryogenic vaporizer 12 dehumidifies outdoor fresh air by fluorine air heat-exchange at the same time.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 throttle valve EEV3 standard-sized sheets.The high temperature and pressure 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 the expansion throttling of second throttle EEV2 and is steamed Send out device 12 and cool-down dehumidification is carried out to outdoor fresh air.
The refrigerant of another way high temperature and pressure produces heating hot water after four-way valve, into heat exchanger.Passed through after After crossing the expansion throttling of first throttle valve EEV1, 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.At this time, only the refrigerant of high temperature and pressure 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, is more easily implemented system.
As can be seen from the above description, in the winter time under pattern, the technical solution of embodiment three can either carry out in advance fresh air Heat treatment, 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 the cooperation of valve 142 and second throttle EEV2, the selection to dehumidification function can be realized.
2.4 embodiments four
Fig. 4 a to Fig. 4 c describe the technical solution 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 12 trandfer fluid medium of device.Similar to embodiment one, the effect of four-way valve is, under different operating modes, makes compressor can To utilize four-way valve to 12 discharge pressure medium of condenser 11 or evaporator.
In embodiment four, the entrance of the evaporator 12 be connected to the condenser 11 and the heat exchanger 20 it Between flow path 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 shown in the figure, under preferable case, the air-conditioning system includes reheater 14, and the entrance of the reheater 14 is connected to institute State on the flow path between the exhaust outlet of compressor 30 and the four-way valve, the outlet of the reheater 14 is connected to the condenser On flow path between 11 and the heat exchanger 20.Due to being provided with reheater 14, 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 throttle valve EEV3;And/or the reheater 14 is in series with the 4th throttle valve EEV4.Can also be to medium using these throttle valves Physical state regulated and controled, such as pressure and flow.
The connection structure of embodiment four described in detail above, describe below embodiment four technical solution 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 throttle 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 the expansion throttling of 3rd throttle valve EEV3, 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, it is indoor that high temperature cold water supply is directly prepared by heat exchanger Radiation cooling;Cryogenic vaporizer 12 dehumidifies outdoor fresh air by fluorine air heat-exchange.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 throttle 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 throttle valve EEV4.Refrigerant by the another way high temperature and pressure of four-way valve enters heat Exchanger produces heating hot water.Two-way is then separated into, enters dehumidifying after the expansion throttling of second throttle EEV2 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, completes 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 at the same time, 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.
As can be seen from the above description, in the winter time under pattern, the technical solution of embodiment four can either carry out in advance fresh air Heat treatment, 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 connection structure of different embodiments and its operational process 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 that 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 runs, the air of outdoor high temperature high humidity first passes through 23, at this time The refrigerant temperature being passed through in 23 is identical with the temperature of radiator, is usually 16-18 DEG C, 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 passed through at this time in evaporator 12 is 0-8 DEG C of refrigerant, and fresh air further cools down by evaporator 12, passes through 23 originally Air is just already close to saturation afterwards, at this time again by evaporator 12 after, air can further cool down, while the saturated water in air It can largely separate out, form good dehumidifying effect.Fresh air after dehumidifying, then heated up by reheater 14, at this time 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 The accurate of air is adjusted with realizing, reaches the required state of 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, provides great convenience accurate adjust of air.
It is not limited to this 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 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 be omitted.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, at the same time It can also realize defrosting mode, 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.
It is all the application's not to limit the application the foregoing is merely the better embodiment of the application Within spirit and principle, any modification, equivalent replacement, improvement and so on, should be included within the protection domain of the application.

Claims (7)

1. air-conditioning system, it is characterised in that the air-conditioning system includes:
Fresh air module, the fresh air module include compressor, condenser (11) and the evaporator (12) fluidly connected, the evaporator (12) be used to regulate and control the temperature and/or humidity of fresh air, the compressor (30) is connected with four-way valve, with selectively to The condenser (11) or evaporator (12) trandfer fluid medium;With
Thermal module, the flow path of the thermal module carry out heat exchange with the flow path of the fresh air module but do not connect, the temperature Module is used for being regulated and controled using the temperature of side, and the thermal module includes:
Heat exchanger (20), the heat exchanger (20) are used to carry out heat with the flow path through the heat exchanger of the fresh air module Exchange;
Heat radiator (21), the heat radiator (21) are connected formation envelope in the use side and with the heat exchanger (20) The flow path closed;
Pump (22), which is connected in the flow path of the closing,
Wherein, the condenser (11) and the heat exchanger (20) are connected in series, and the evaporator (12) is described with connecting Condenser (11) and heat exchanger (20) are connected in parallel, and the entrance of the evaporator (12) is connected to the row of the compressor (30) On flow path between gas port and the four-way valve.
2. air-conditioning system according to claim 1, it is characterised in that the thermal module includes Fresh air handing device (23), The Fresh air handing device (23) is connected in parallel with the heat radiator (21), is carried out for the temperature to the fresh air and/or humidity Regulation and control.
3. air-conditioning system according to claim 2, it is characterised in that the Fresh air handing device (23) and/or the heat are handed over Parallel operation (20) is in series with regulating valve.
4. air-conditioning system according to claim 1, it is characterised in that evaporator (12) upstream tandem has reheater (14), which is used to regulate and control the temperature of the fresh air.
5. air-conditioning system according to claim 4, it is characterised in that reheater (14) upstream tandem has valve;And/or Second throttle (EEV2) is in series between the reheater (14) and the evaporator (12).
6. air-conditioning system according to claim 1, it is characterised in that the condenser (11) is in series with first throttle valve (EEV1), the heat exchanger (20) is connected in series with the 3rd throttle valve (EEV3).
It is the Fresh air handing device (23), described in the flow direction of the fresh air 7. air-conditioning system according to claim 4 Evaporator (12) and the reheater (14) are arranged in order from upstream toward downstream.
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CN205505262U (en) * 2016-03-23 2016-08-24 西安工程大学 Radiation air -conditioning system
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2665580Y (en) * 2003-12-05 2004-12-22 清华大学 Parallel connection heat pump conditioning unit
KR20080006466U (en) * 2007-06-19 2008-12-24 신성덕 Cool/hot water drinking fountain with air conditioning
CN202853212U (en) * 2012-09-28 2013-04-03 东南大学 Novel household air conditioner system with independent temperature and humidity control
CN104180459A (en) * 2014-09-09 2014-12-03 珠海格力电器股份有限公司 Air conditioning system
CN104266292A (en) * 2014-09-27 2015-01-07 泰豪科技股份有限公司 Temperature and humidity control air-conditioner of double condenser
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