CN110500684A - A kind of energy-saving air conditioning system and its control method - Google Patents

A kind of energy-saving air conditioning system and its control method Download PDF

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Publication number
CN110500684A
CN110500684A CN201910799129.6A CN201910799129A CN110500684A CN 110500684 A CN110500684 A CN 110500684A CN 201910799129 A CN201910799129 A CN 201910799129A CN 110500684 A CN110500684 A CN 110500684A
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CN
China
Prior art keywords
heat exchange
thermally conductive
energy
branch
heat
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CN201910799129.6A
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Chinese (zh)
Inventor
林立伟
易南昌
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Shenzhen Tongji Science And Technology Co Ltd
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Shenzhen Tongji Science And Technology Co Ltd
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Priority to CN201910799129.6A priority Critical patent/CN110500684A/en
Publication of CN110500684A publication Critical patent/CN110500684A/en
Pending legal-status Critical Current

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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
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46Improving electric energy efficiency or saving
    • F24F11/47Responding to energy costs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • 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
    • F24F13/22Means for preventing condensation or evacuating condensate
    • F24F13/222Means for preventing condensation or evacuating condensate for evacuating condensate
    • 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
    • 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
    • F24F5/0003Exclusively-fluid systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • F24F2110/12Temperature of the outside air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • F24F2110/22Humidity of the outside air

Abstract

The present invention discloses a kind of energy-saving air conditioning system and its control method, energy-saving air conditioning system include setting indoors the First Heat Exchanger of the evaporator inlet side of machine, be arranged in outdoor unit condenser inlet side the second heat exchanger and heat exchanging pipe, the First Heat Exchanger is connected with second heat exchanger by the heat exchanging pipe, to form the first heat exchange branch.In the present invention when outdoor temperature is lower, outdoor low temperature can be made full use of by the first heat exchange branch, realize room temperature lowering refrigeration under the premise of being not turned on air conditioner original heat exchange branch, to save the energy consumption of air conditioner, meet the power conservation requirement of energy-saving and environment friendly.

Description

A kind of energy-saving air conditioning system and its control method
Technical field
The present invention relates to air conditioner technical field more particularly to a kind of energy-saving air conditioning system and its control methods.
Background technique
More and more for current large and medium-sized newdata centric quantity, IT loads also increasing application scenarios, section Can type air-conditioning products, can active response country energy saving policy, reduce data center's air-conditioning system refrigeration power consumption, realization The decline of PUE value.Current internet, Internet of Things and cloud computing high speed development, and data center is the basis of the information industry development, The market demand is huge, and data center is a kind of data center of the modules such as integrated power supply system, refrigeration system, monitoring system.In In data center, the energy consumption of air-conditioning is accounted for more than the 30% of total energy consumption, occupies sizable specific gravity, and the energy-saving run of air-conditioning is each The important breakthrough point of a operator and data center user energy-saving and emission-reduction action;The market demand of energy-saving product is increasing, How to design applicability well and have both the air-conditioning products of energy-saving effect, at the same again can active response national energy-saving policy, be empty Manufacturer is adjusted to need the problem of thinking.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of energy-saving type air conditioner system System and its control method, it is intended to realize the energy conservation and environmental protection of air conditioner.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of energy-saving air conditioning system comprising the First Heat Exchanger of the evaporator inlet side of machine, setting exist indoors for setting The second heat exchanger and heat exchanging pipe of the condenser inlet side of outdoor unit, the First Heat Exchanger and second heat exchanger are logical It crosses the heat exchanging pipe to be connected, to form the first heat exchange branch.
The energy-saving air conditioning system, wherein the evaporator is connected with the condenser and forms the second heat exchange branch, It is mutually indepedent between the first heat exchange branch and the second heat exchange branch.
The energy-saving air conditioning system, wherein second heat exchanger include at least two thermally conductive branches, described at least two Thermally conductive branch circuit parallel connection, and be connected with the heat exchanging pipe.
The energy-saving air conditioning system, wherein the thermally conductive branch includes thermally conductive coil pipe and solenoid valve, and the solenoid valve is located at The thermally conductive coil pipe is close to the side of the heat exchanging pipe.
The energy-saving air conditioning system, wherein the inlet side of the condenser is provided with drip tray, in the drip tray and institute It states and is arranged with the thermally conductive branch outside drip tray.
The energy-saving air conditioning system, wherein direct evaporative cooler, the direct evaporation are additionally provided in the outdoor unit Cooler includes filler and spray tube, and the filler is arranged in the inlet side of the thermally conductive coil pipe outside the drip tray, described Spray tube is connected to the drip tray, and the water outlet of the spray tube is towards the filler.
A kind of control method of energy-saving air conditioning system comprising:
When air-conditioning is in refrigeration mode, temperature parameter is obtained, wherein the temperature parameter includes room temperature and outdoor Temperature;
The temperature parameter is compared with preset condition;
When the temperature parameter meets the preset condition, closes the second heat exchange branch and open the first heat exchange branch.
The control method, wherein the preset condition is that the outdoor temperature is default lower than the room temperature first Value.
The control method, wherein it is described when the temperature parameter meets the preset condition, close the second heat exchange branch Simultaneously open the first heat exchange branch in road specifically:
When the temperature parameter meets the preset condition, closes the second heat exchange branch and judge the outdoor temp Whether degree is higher than the second preset value;
When being, all thermally conductive branches are opened;
When no, the thermally conductive branch being located at outside drip tray is opened, and empty the drip tray.
The control method, further include:
When all thermally conductive branches are opened and the second heat exchange branch is closed, outdoor air relative humidity is obtained, and Judge whether the outdoor air relative humidity is lower than default humidity threshold;
When being, spray tube is opened.
The utility model has the advantages that compared with prior art, in the present invention when outdoor temperature is lower, air conditioner original can be not turned on Under the premise of having heat exchange branch, outdoor low temperature is made full use of by the first heat exchange branch, realizes room temperature lowering system It is cold, to save the energy consumption of air conditioner, meet the power conservation requirement of energy-saving and environment friendly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of energy-saving air conditioning system of the invention;
Fig. 2 is the structural schematic diagram of heretofore described first heat exchange branch;
Fig. 3 is the structural schematic diagram of heretofore described second heat exchange branch;
Fig. 4 is the structural schematic diagram of heretofore described thermally conductive coil pipe;
Fig. 5 is the functional schematic block diagram of energy-saving air conditioning system of the invention;
Fig. 6 is the flow chart of the preferred embodiment of the control method in the present invention based on energy-saving air conditioning system.
Specific embodiment
A kind of energy-saving air conditioning system provided by the invention and its control method, for make the purpose of the present invention, technical solution and Advantage is clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that herein Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of energy-saving air conditioning system, as shown in Figure 1, the energy-saving air conditioning system includes indoor unit 100, room Outer machine 200 and the first heat exchange branch, the indoor unit 100 include being arranged the first of 2 inlet side of evaporator of machine 100 indoors to change Hot device 6, be arranged in outdoor unit 200 3 inlet side of condenser the second heat exchanger and heat exchanging pipe 7, the First Heat Exchanger 6 It is connected with second heat exchanger by the heat exchanging pipe 7, to form the first heat exchange branch.
The present invention realized by the on-off of the heat exchanging pipe 7 First Heat Exchanger 6 and second heat exchanger it Between heat transfer exchange on-off, when turn off the heat exchanging pipe 7, the First Heat Exchanger 6 and second heat exchanger Between can not carry out heat exchange;When opening the heat exchanging pipe 7, the First Heat Exchanger 6 and second heat exchanger it Between can carry out heat exchange.
When indoor environment temperature is high, and outdoor environment temperature is lower, it can be not turned on the original heat exchange branch of air conditioner, And the heat exchanging pipe 7 is opened, to open the first heat exchange branch, since outdoor environment temperature is lower, described second is changed The temperature of hot device is lower than the temperature of the First Heat Exchanger 6, then the low temperature of second heat exchanger can pass through the heat exchanger tube Road 7 passes to the First Heat Exchanger 6, and the First Heat Exchanger 6 is made to cool down, after room air enters the indoor unit 100, warp It crosses the First Heat Exchanger 6 to cool down, then blows to interior, realize that room temperature lowering refrigeration, outdoor return are changed by described second After being absorbed heat after hot device, outdoor environment is discharged again.
Therefore, in the present invention when outdoor temperature is lower, can under the premise of being not turned on air conditioner original heat exchange branch, Outdoor low temperature is made full use of by the first heat exchange branch, room temperature lowering refrigeration is realized, to save air conditioner Energy consumption meets the power conservation requirement of energy-saving and environment friendly.
The indoor unit 100 includes the evaporator 2 and indoor fan 1 set gradually along indoor air-out direction, the room Outer machine 200 includes the compressor 22, condenser 3 and outdoor fan 4 set gradually along outside air-out direction, as shown in figure 3, institute Stating outdoor unit 200 further includes throttle valve 5, the compressor 22, the evaporator 2, the throttle valve 5 and the condenser 3 according to Secondary to connect and compose closed loop, to form the second heat exchange branch, the second heat exchange branch is the original heat exchange of air conditioner Branch.When the compressor 22 starting after, Indoor Thermal return air after 2 evaporation endothermic of evaporator, send out Cryogenic air into Enter indoor carry out radiating and cooling;After outdoor return is absorbed heat after the condenser 3, outdoor environment is discharged again, thus The mechanical refrigeration to indoor environment is realized by the second heat exchange branch.
Further, mutually indepedent between the first heat exchange branch and the second heat exchange branch, i.e., described first changes Being switched on or off for hot branch can't generate any influence to being switched on or off for branch of the second heat exchange, and described first changes The switch of the switch of hot branch and the second heat exchange branch can be controlled individually, may be implemented: only by described first The branch that exchanges heat realizes heat exchange, or only realizes heat exchange or the first heat exchange branch and described the by the second heat exchange branch Two heat exchange branches open heat exchange simultaneously.
As shown in Fig. 2, second heat exchanger includes at least two thermally conductive branches 71, at least two thermally conductive branch 71 Parallel connection, and be connected with the heat exchanging pipe 7;The thermally conductive branch 71 includes thermally conductive coil pipe 72, by the thermally conductive coil pipe 72 The base tube 74 and solenoid valve 73 being connected to the heat exchanging pipe 7, the solenoid valve 73 are located on the base tube 74.Each is led Hot branch 71 is all disposed with the solenoid valve 73 of a control own switch, by opening or closing solenoid valve 73, i.e., it is controllable with The corresponding thermally conductive branch 71 of solenoid valve 73 opens or closes.When all solenoid valves 73 are opened, all thermally conductive branches 71 unlatchings exchange heat, then same by described at least two thermally conductive branches 71 after outdoor air enters in the outdoor unit 200 Step exchanges heat, and greatly promotes the rate to exchange heat between the First Heat Exchanger 6 and second heat exchanger.
As shown in figure 4, the thermally conductive coil pipe 72 is including coil pipe ontology 721 and is evenly arranged in the coil pipe ontology 721 Outer surface fin 722, the coil pipe ontology 721 and the fin 722 be integrally formed manufacture using graphene heat-conducting medium, Specifically, binder is added in graphene heat-conducting medium, corresponding shape is formed by injection molding.First heat exchange It is not necessarily to difference in height between device 6 and second heat exchanger, is not necessarily to power source, the heat-conducting medium inside the thermally conductive coil pipe 72 does not relate to And phase-state change, without circulating, thermal conductivity up to 5000W/ (mK) more than, be more than ten times of aluminum heat-conducting medium with On, it is thermally conductive fast, simultaneously because graphene has same temp effect, so that energy-saving air conditioning system of the present invention can be realized utmostly The Free Region of energy conserving system has greatly been widened in the utilization of outdoor natural cooling source, not only in northern area, while south very It is mostly regional, can open the first heat exchange branch and carry out assisted refrigeration heat dissipation, this for a user, annual energy conservation effect Fruit, which necessarily has, significantly to be promoted;Circulation cooling is carried out without heat exchange Jie's agent such as traditional freon simultaneously, described first changes No pressure inside hot branch, there is no freon leaks risk and atmosphere pollution and the destructions of ozone layer, are more energy-saving and environmentally friendly;Its In, the structure of the First Heat Exchanger 6 is identical as the structure of the thermally conductive coil pipe 72.
Traditional aluminum pipe or the heat exchange coil of copper pipe manufacture, there are air-aluminum fin-stock 722- copper pipe-heat transferring medium, wherein aluminium Fin 722 and copper pipe are processed by tube expansion mode, wherein being easy there are gap, heat exchanging generates strong influence, and aluminium Between fin 722 and copper pipe, between copper pipe and heat transferring medium, also there is the heat transmitting between different Heat Conduction Materials, eventually lead to Heat cannot achieve preferable transmitting, and heat exchange efficiency is not high.And heretofore described heat exchanging pipe 7 and the base tube 74 are adopted It is made of graphene heat-conducting medium, thermal conductivity having the same, there is no the tight heat waited between gaps and different materials of contact Transmitting, air directly realize heat transmitting with Heat Conduction Material in pipe, realize the fast transfer of heat.
The inlet side of the condenser 3 is provided with drip tray 8, is arranged with outside in the drip tray 8 with the drip tray 8 The thermally conductive branch 71;Preferred embodiment, the thermally conductive branch 71 are two, and two thermally conductive branches 71 are in parallel, one of them Thermally conductive branch 71 is arranged in the drip tray 8, is dropped by the water in the drip tray 8 to thermally conductive coil pipe 72 therein Temperature;Another thermally conductive branch 71 is arranged in outside the drip tray 8, and is located at the inlet side of the condenser 3, to pass through entrance The outdoor air of the outdoor unit 200 cools down to the thermally conductive branch 71.
The drip tray 8 is also connected to water supply pipe, and the water supply pipe is connected to outdoor water source, to pass through the water supply pipe The supplement water into the drip tray 8.
Further, water dish 9 is additionally provided in the indoor unit 100, the water dish 9 is located at the evaporator 2 Underface, the condensed water flowed down with access from the evaporator 2.Preferably, the water dish 9 passes through room with the drip tray 8 10 connection of internal drainage pump, so that condensed water is supplied to the drip tray 8, since condensate temperature is lower, connects described The thermally conductive coil pipe 72 of arrangement, can effectively promote the cooling effect to the thermally conductive coil pipe 72, while having recycled condensation in water pond 8 Water maximizes and saves water resource.
Direct evaporative cooler 15 is additionally provided in the outdoor unit 200, the direct evaporative cooler 15 includes filler 151 and spray tube 152, the filler 151 be arranged in the inlet side of the thermally conductive coil pipe 72 outside the drip tray 8, the spray Shower pipe 152 is connected to the drip tray 8, and the water outlet of the spray tube 152 is towards the filler 151.Described in unlatching When spray tube 152, the spray tube 152 is sprayed water to the filler 151, makes outdoor return air-flow after the filler 151, is returned Air temperature tentatively reduces.
Based on energy-saving air conditioning system described above, the present invention also provides a kind of control method of energy-saving air conditioning system, Preferably, the energy-saving air conditioning system is applied to data center machine room, as shown in fig. 6, the control method includes the following steps:
S100, when air-conditioning is in refrigeration mode, obtain temperature parameter, wherein the temperature parameter include room temperature and Outdoor temperature;
Specifically, the second heat exchange branch is in the open state when air-conditioning is in refrigeration mode;The energy-saving type air conditioner System further includes controller 300, and the controller 300 is set in the indoor unit 100 or the outdoor unit 200;The room Indoor return air temperature sensor 16 is arranged in the air inlet of interior machine 100, obtains institute by the detection of indoor return air temperature sensor 16 Room temperature is stated, and the room temperature is sent to the controller 300;The air inlet of the outdoor unit 200 is provided with Outdoor temperature humidity sensor 17 obtains the outdoor temperature by the outdoor temperature humidity sensor 17 detection, and by the room Outer temperature is sent to the controller 300.
As shown in figure 5, the condenser 3, the evaporator 2, the compressor 22, the solenoid valve 73, the interior Draining pump 10, the indoor return air temperature sensor 16 and the outdoor temperature humidity sensor 17 are electric with the controller 300 Connection, the chip model of the controller 300 are STM32F103.The air inlet of the indoor unit 100 is provided with the first filtering Net 20, the air inlet of the outdoor unit 200 is provided with the second filter screen 21, with the cleanliness of airflow circulating tissue and unlatching Outdoor circulation air cleanliness when the first heat exchange branch and spray tube.
The temperature parameter is compared by S200, the controller 300 with preset condition;
Specifically, the preset condition be the outdoor temperature be lower than first preset value of room temperature, described first Preset value is 2 DEG C.
S300, when the temperature parameter meets the preset condition, close second heat exchange branch simultaneously open first heat exchange Branch.
When the outdoor temperature is lower than 2 DEG C of the room temperature, described the is closed by closing the compressor 22 Two heat exchange branches, do not use the original heat exchange branch of air conditioner, and by opening the first heat exchange branch, make leading for indoor and outdoor The high temperature of indoor thermally conductive coil pipe 72 is passed to the thermally conductive coil pipe 72 of outdoor low temperature by itself conductivity properties by hot coil 72, real Existing natural heat dissipation.
The step S300 is specifically included:
S301, when the temperature parameter meets the preset condition, the controller 300 close it is described second heat exchange branch Road simultaneously judges whether the outdoor temperature is higher than the second preset value;
Whether second preset value is too low for measuring outdoor temperature, when outdoor temperature is too low, in the drip tray 8 Water easily freeze, through the outdoor temperature compared with second preset value, to determine whether needing to empty the water receiving Disk 8.Preferred embodiment, second preset value are 0 DEG C.
S302, when being, open all thermally conductive branches 71;
When the outdoor temperature is higher than 0 DEG C, there is no risk of icing for the drip tray 8, then the controller 300 is opened Open all solenoid valves 73, to open all thermally conductive branches 71, all thermally conductive coil pipes 72 synchronize to the First Heat Exchanger 6 into The exchange cooling of row heat, promotes heat transfer effect.
S303, when no, open the thermally conductive branch 71 being located at outside drip tray 8, and empty the drip tray 8.
The drip tray 8 is connected with drainpipe, and the drainpipe is provided with drain valve close to described drain pan one end, described Drain valve is electrically connected with the controller 300;The drainpipe is located at the outer of the outdoor unit 200 far from described drain pan one end Portion;When the outdoor temperature is lower than 0 DEG C, the controller 300 opens the drain valve, and the water in the drip tray 8 is arranged Sky, prevents from freezing, and at this time remains turned-off solenoid valve 73 corresponding to the thermally conductive coil pipe 72 being located in the drip tray 8, only opens Solenoid valve 73 corresponding to the thermally conductive coil pipe 72 being located at outside the drip tray 8 is opened, the thermally conductive coil pipe outside the water receiving room is only passed through 72 exchange heat.
The control method further include:
S400, when all thermally conductive branches 71 are opened, the controller 300 is calculated according to outdoor temperature and outside humidity Outdoor air relative humidity is obtained, and judges whether the outdoor air relative humidity is lower than default humidity threshold;
Preferred embodiment, the default humidity threshold are 90%RH;Between the drip tray 8 and the spray tube 152 It is connected with water circulating pump 13, the water circulating pump 13 is electrically connected with the controller 300, and the controller 300 passes through control institute The switch of water circulating pump 13 is stated, realizes the control whether sprayed water to the filler 151 to the spray tube 152.
S500, when being, open spray tube 152.
When the outdoor air relative humidity is lower than 90%RH, the controller 300 controls the water circulating pump 13 and opens It opens, the spray tube 152 sprays the filler 151, and the filler 151 is made to cool down, will be outdoor by the filler 151 The temperature of return air stream is tentatively cooled down, and using the thermally conductive coil pipe 72 outside the drip tray 8, outdoor lower temperature is returned After general mood stream absorbs the high temperature of the thermally conductive coil pipe 72, it is outdoor that the outdoor fan 4 is recycled into discharge.
Water compensating valve 11 is provided on the water supply pipe, the water compensating valve 11 is electrically connected with the controller 300, the water receiving Electromagnetism switch 14 is provided in disk 8, the electromagnetism switch 14 is electrically connected with the controller 300;The recirculated water When pump 13 is opened, the water in the drip tray 8 is constantly circulated, when water level is lower than preset water level in the drip tray 8, institute Electromagnetism switch 14 to be stated to float, the controller 300 receives replenishment signal, and controls the water compensating valve 11 and open, thus to The new water source of supplement in the drip tray 8.
Further, in the present invention when all thermally conductive branches 71 are in open state, by being arranged in the evaporation Multiple temperature sensors 18 between device 2 and the First Heat Exchanger 6 detect multi-point temperature, and the controller 300 calculates multiple spot The mean temperature of temperature is not needed to open mechanical refrigeration mode, be only relied on when the mean temperature is lower than 25 DEG C of preset temperature The first heat exchange branch achieves that indoor cooling requirement;When the mean temperature is higher than 25 DEG C, mechanical refrigeration is opened Mode opens the second heat exchange branch, carried out by the First Heat Exchanger 6 to the air-flow for blowing to the evaporator 2 pre- First cool down, carrying out assisted refrigeration by the evaporator 2, and according to the mean temperature to the frequency of the compressor 22 into Horizontal-linearity control (the frequency reduced the compressor 22 when mean temperature reduces, when mean temperature increases described in raising The frequency of compressor 22), with the refrigerating capacity output that real-time matching is optimal.
When indoor return air temperature and the difference of outdoor environment temperature are less than 2 DEG C, then the first heat exchange branch is kept to close It closes, the second heat exchange branch open state.
It is (indoor when entering dehumidification mode with refrigeration demand priority principle in the present invention when interior has dehumidification Without refrigeration demand), mechanical clammy mode dehumidifies unlatching, and the first heat exchange branch according to outdoor environment temperature and The variation of indoor return air temperature it is determined whether to enable.When outdoor environment temperature is lower than indoor return air temperature, pass through described first Heat exchange branch is not turned on, to avoid the decline of air-conditioning temperature is too fast from causing the shutdown of compressor 22, effect on moisture extraction unknown Aobvious phenomenon.
When outdoor environment temperature is higher than indoor return air temperature, the first heat exchange branch is opened, second heat exchanger High temperature transmitted to the First Heat Exchanger 6, so that the partial heat of outdoor environment is transferred to interior, phase by heat-conducting medium When in improving the return air temperature of the evaporator 2, making the second heat exchange branch load little indoors, it can be achieved that stablizing Dehumidifying, it is ensured that the ambient temperature and humidity field of data center machine room meets the normal operation requirement of server.When outdoor environment temperature is low When indoor return air temperature, the second heat exchange branch is kept it turned on, and the first heat exchange branch remains off.
In conclusion the present invention provides a kind of energy-saving air conditioning system and its control method, energy-saving air conditioning system includes setting Indoors the First Heat Exchanger of the evaporator inlet side of machine, be arranged in outdoor unit condenser inlet side the second heat exchanger and Heat exchanging pipe, the First Heat Exchanger are connected with second heat exchanger by the heat exchanging pipe, to form the first heat exchange Branch.It, can be under the premise of being not turned on air conditioner original heat exchange branch, by described in the present invention when outdoor temperature is lower First heat exchange branch makes full use of outdoor low temperature, realizes room temperature lowering refrigeration, to save the energy consumption of air conditioner, meets The power conservation requirement of energy-saving and environment friendly.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention Protect range.

Claims (10)

1. a kind of energy-saving air conditioning system, which is characterized in that it includes the first heat exchange that the evaporator inlet side of machine indoors is arranged Device, be arranged in outdoor unit condenser inlet side the second heat exchanger and heat exchanging pipe, the First Heat Exchanger and described the Two heat exchangers are connected by the heat exchanging pipe, to form the first heat exchange branch.
2. energy-saving air conditioning system according to claim 1, which is characterized in that the evaporator is connected simultaneously with the condenser The second heat exchange branch is formed, it is mutually indepedent between the first heat exchange branch and the second heat exchange branch.
3. energy-saving air conditioning system according to claim 1, which is characterized in that second heat exchanger includes at least two thermally conductive Branch, at least two thermally conductive branch circuit parallel connection, and be connected with the heat exchanging pipe.
4. energy-saving air conditioning system according to claim 3, which is characterized in that the thermally conductive branch includes thermally conductive coil pipe and electromagnetism Valve, the solenoid valve are located at the thermally conductive coil pipe close to the side of the heat exchanging pipe.
5. energy-saving air conditioning system according to claim 4, which is characterized in that the inlet side of the condenser is provided with water receiving Disk, the drip tray is interior and the drip tray is arranged with the thermally conductive branch outside.
6. energy-saving air conditioning system according to claim 5, which is characterized in that be additionally provided in the outdoor unit directly evaporate it is cold But device, the direct evaporative cooler include filler and spray tube, and the filler is arranged in thermally conductive outside the drip tray The inlet side of coil pipe, the spray tube are connected to the drip tray, and the water outlet of the spray tube is towards the filler.
7. a kind of control method of energy-saving air conditioning system, characterized in that it comprises:
When air-conditioning is in refrigeration mode, temperature parameter is obtained, wherein the temperature parameter includes room temperature and outdoor temperature;
The temperature parameter is compared with preset condition;
When the temperature parameter meets the preset condition, closes the second heat exchange branch and open the first heat exchange branch.
8. control method according to claim 7, which is characterized in that the preset condition is the outdoor temperature lower than described The first preset value of room temperature.
9. control method according to claim 7, which is characterized in that described when the temperature parameter meets the preset condition When, it closes the second heat exchange branch and opens the first heat exchange branch specifically:
When the temperature parameter meets the preset condition, closes the second heat exchange branch and judge that the outdoor temperature is It is no to be higher than the second preset value;
When being, all thermally conductive branches are opened;
When no, the thermally conductive branch being located at outside drip tray is opened, and empty the drip tray.
10. control method according to claim 9, which is characterized in that its further include:
When all thermally conductive branches are opened and the second heat exchange branch is closed, outdoor air relative humidity is obtained, and judge Whether the outdoor air relative humidity is lower than default humidity threshold;
When being, spray tube is opened.
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CN202647990U (en) * 2012-05-19 2013-01-02 Tcl空调器(中山)有限公司 Double-pole and double-condensation air conditioner
CN103743016A (en) * 2013-12-26 2014-04-23 宝鸡兴业空调设备(集团)有限公司 Evaporative cooling air conditioner capable of regulating temperature and humidity
CN105698314A (en) * 2016-03-17 2016-06-22 西安工程大学 Evaporative cooling-mechanical refrigeration combined type energy-saving air-conditioning system for data room
WO2017037816A1 (en) * 2015-08-31 2017-03-09 三菱電機株式会社 Ventilation device
CN208253826U (en) * 2018-03-09 2018-12-18 捷通智慧科技股份有限公司 A kind of indirect natural cooling of fresh air and mechanical refrigeration combined unit
CN109489126A (en) * 2018-11-14 2019-03-19 深圳市共济科技股份有限公司 A kind of integrated energy-saving air conditioner device and its control method
CN109827282A (en) * 2019-01-23 2019-05-31 西安工程大学 A kind of heat pipe-type fresh air ventilator combined with evaporation cooling
CN208998234U (en) * 2018-09-27 2019-06-18 西安工程大学 In conjunction with the cooling energy-saving and purifying air-conditioning system with evaporative condenser of evaporation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202647990U (en) * 2012-05-19 2013-01-02 Tcl空调器(中山)有限公司 Double-pole and double-condensation air conditioner
CN103743016A (en) * 2013-12-26 2014-04-23 宝鸡兴业空调设备(集团)有限公司 Evaporative cooling air conditioner capable of regulating temperature and humidity
WO2017037816A1 (en) * 2015-08-31 2017-03-09 三菱電機株式会社 Ventilation device
CN105698314A (en) * 2016-03-17 2016-06-22 西安工程大学 Evaporative cooling-mechanical refrigeration combined type energy-saving air-conditioning system for data room
CN208253826U (en) * 2018-03-09 2018-12-18 捷通智慧科技股份有限公司 A kind of indirect natural cooling of fresh air and mechanical refrigeration combined unit
CN208998234U (en) * 2018-09-27 2019-06-18 西安工程大学 In conjunction with the cooling energy-saving and purifying air-conditioning system with evaporative condenser of evaporation
CN109489126A (en) * 2018-11-14 2019-03-19 深圳市共济科技股份有限公司 A kind of integrated energy-saving air conditioner device and its control method
CN109827282A (en) * 2019-01-23 2019-05-31 西安工程大学 A kind of heat pipe-type fresh air ventilator combined with evaporation cooling

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