CN104359166B - A kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method - Google Patents

A kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method Download PDF

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Publication number
CN104359166B
CN104359166B CN201410580661.6A CN201410580661A CN104359166B CN 104359166 B CN104359166 B CN 104359166B CN 201410580661 A CN201410580661 A CN 201410580661A CN 104359166 B CN104359166 B CN 104359166B
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refrigeration
low
execution
temperature
control module
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CN201410580661.6A
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Chinese (zh)
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CN104359166A (en
Inventor
林创辉
邱小亮
张晓艳
彭雨
李云鹏
陈华
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广东申菱环境系统股份有限公司
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    • 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
    • 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
    • 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
    • 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
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • 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
    • F24F2110/20Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • 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
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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 invention discloses a kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method, it is air conditioning unit including outside framework component, air treatment system, coolant water cooling system, refrigeration system one, refrigeration system two, refrigeration system three, refrigeration system four and control system.The present invention is compared with traditional list low-temperature receiver single-stage latent heat processes low-temperature air conditioner machine, Energy Efficiency Ratio is higher, more energy saving, reasonable in design, energy-efficient, control accuracy, stable and reliable operation, and possess double low-temperature receiver selection functions, solve the problems, such as more than needed using efficiency higher homoiothermic air conditioning water low-temperature receiver;Energy saving, reduction environmental pollution, meet energy-conservation and environmental protection policy that country advocates.

Description

A kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method

Technical field

The present invention relates to a kind of low-temperature air conditioner unit, more particularly to a kind of pair of low-temperature receiver latent heat process low-temperature air conditioner unit And its control method.

Background technology

It is the requirement for meeting air conditioner surroundings to humid control that current latent heat processes low-temperature air conditioner machine product, by air Big enthalpy difference cooling, for reducing the humidity of air, carries out humidity regulation to air-conditioned room, with efficient temperature regulation air conditioning system Combine, reach the purpose of air-conditioned room temperature and humidity regulation control.

But existing latent heat processes low-temperature air conditioner machine product, only with the single low-temperature receiver of refrigeration system refrigeration and single-stage refrigeration side Formula, for example, is 30 DEG C in inlet temperature, it is desirable to when leaving air temp is 7 DEG C of cold air distribution, and the evaporating temperature needs of whole machine are low To -2 ~ 0 DEG C, so as to the general latent heat that result in single low-temperature receiver single-stage refrigeration processes the compressor operating efficiency phase of low-temperature air conditioner unit When low, and as evaporating temperature is too low, easily there is the problem that frosting causes generator protection action, so that energy occurs in whole machine The problems such as imitating and not high control accuracy more unstable than low, long-play, high energy consumption, operation are unreliable, do not meet country and advocate Energy conservation type, the requirement of friendly environment society.

Meanwhile, be used in combination with air conditioning system with efficient temperature regulation because latent heat processes low-temperature air conditioner, in sub-load or During transition season, homoiothermic air-conditioning cold flow has more than needed, but latent heat processes low-temperature air conditioner and cannot utilize, and can only waste, make Into the waste of cold and equipment.

Therefore, prior art has yet to be improved and developed.

The content of the invention

It is an object of the invention to provide a kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method, it is intended to solve Certainly existing latent heat process low-temperature air conditioner Energy Efficiency Ratio is low, longtime running is unstable, control accuracy is not high, and latent heat processes low temperature sky Adjust the problem that cannot utilize homoiothermic air conditioning water.

Technical scheme is as follows:A kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner, wherein, including outside framework component, Air treatment system, coolant water cooling system, refrigeration system one, refrigeration system two, refrigeration system three, refrigeration system four and control System;

The outside framework component includes base and outside framework, and outside framework is fixedly installed on base, sets on the outside framework Air inlet and air outlet are equipped with, multiple stage axial flow blower at the top of outside framework, is provided with, axial flow blower is provided for whole low-temperature air conditioner The power of gas flow;The air treatment system, coolant water cooling system, refrigeration system one, refrigeration system two, refrigeration system Three and refrigeration system four be all disposed within outside framework;

The air treatment system includes humidifier, motor and pressure fan, and the humidifier is arranged in outside framework, air-supply Machine is arranged at air outlet, and motor is connected with pressure fan;

The coolant water cooling system includes Surface cooling coil, and the Surface cooling coil passes through water inlet pipe and outlet pipe connects paramount Warm air conditioning system, is provided with flow-control water valve on the water inlet pipe;

The refrigeration system one includes the evaporation of compressor one, condenser one, reservoir one, device for drying and filtering one and one-level Device, the compressor one, condenser one, reservoir one, device for drying and filtering one and one-level vaporizer are connected by pipeline between any two Connect the circulation loop to form cold-producing medium;The structure setting of the refrigeration system two is consistent with refrigeration system one;

The refrigeration system three includes compressor three, condenser three, reheater condenser three, reservoir three, device for drying and filtering 3rd, three-level vaporizer and gas-liquid separator three, the compressor three, condenser three, reservoir three, device for drying and filtering three, three-level Vaporizer and gas-liquid separator three connect to form loop by pipeline between any two, the condenser three also with reheater condenser three Connection, reheater condenser three are connected with compressor three;Condenser electromagnetic valve three is provided between compressor three and condenser three, Reheater condenser electromagnetic valve three is provided between reheater condenser three and compressor three, compressor three and three-level vaporizer it Between be provided with defrosting electromagnetic valve three, evaporating pressure controller three is connected with the air inlet pipeline of compressor three;The refrigeration system The structure setting of system four is consistent with refrigeration system three;

The control system includes electric control box, room temperature sensor, room humidity sensor, inlet temperature sensing Device and air intake humidity sensor, the electric control box include sensor data acquisition module, central control module and show behaviour Make interface, the room temperature sensor, room humidity sensor, inlet temperature sensor and air intake humidity sensor all with biography Sensor data acquisition module connects, and sensor data acquisition module and operation display interface are all connected with central control module;Institute State axial flow blower, motor, humidifier, flow-control water valve, compressor one, compressor two, compressor three, condenser electromagnetic valve 3rd, reheater condenser electromagnetic valve three, defrosting electromagnetic valve three, evaporating pressure controller three, compressor four, condenser electromagnetic valve four, Reheater condenser electromagnetic valve four, defrosting electromagnetic valve four and evaporating pressure controller four are all connected with central control module.

Described double low-temperature receiver latent heat process low-temperature air conditioner units, wherein, the compressor one inlet and outlet all It is provided with non-return valve one and pressure switch one;The entrance of one-level vaporizer is provided with expansion valve one;In the compressor two Inlet and outlet is both provided with non-return valve two and pressure switch two;The entrance of secondary evaporimeter is provided with expansion valve two.

Described double low-temperature receiver latent heat process low-temperature air conditioner units, wherein, the compressor three inlet and outlet all It is provided with non-return valve three and pressure switch three;The entrance of three-level vaporizer is provided with expansion valve three;The condenser three and storage Check valve three is provided between liquid device three, between condenser three and reheater condenser three;The compressor four import and go out Non-return valve four and pressure switch four are provided with mouthful;The entrance of level Four vaporizer is provided with expansion valve four;The condenser four Check valve four is provided with and reservoir four between, between condenser four and reheater condenser four.

Described double low-temperature receiver latent heat process low-temperature air conditioner unit, wherein, the air inlet is provided with air-valve.

Described double low-temperature receiver latent heat process low-temperature air conditioner unit, wherein, the air inlet is additionally provided with air filter: Hot blast carries out contaminant filter by air-valve air inlet filter, enters back in outside framework.

Described double low-temperature receiver latent heat process low-temperature air conditioner unit, wherein, the bottom of the outside framework is provided with drip tray, connects Water pond is placed in the lower section of one-level vaporizer, secondary evaporimeter, three-level vaporizer and level Four vaporizer, the external drain pipe of drip tray.

A kind of double low-temperature receiver latent heat as described in above-mentioned any one process the control method of low-temperature air conditioner, wherein, it is concrete to wrap Include following steps:

Step S1:It is input into room temperature set point, room humidity setting value, selects to determine low-temperature receiver by operation display interface Method of supplying, evaporating pressure setting value and pressure reset and set difference;

Step S2:Sensor data acquisition module Real-time Collection is by room temperature sensor, room humidity sensor, air intake Temperature sensor and air intake humidity sensor detect room humiture information, the air intake humiture information for obtaining, and room is warm and humid Degree information and air intake humiture information transmission are to central control module, four reality of evaporating pressure controller three and evaporating pressure controller When signal piping in evaporating pressure be sent to central control module;

Step S3:Instruction and the humiture information obtained according to step S2 that central control module is input into according to step S1, Automatic control flow control water valve, refrigeration system one, refrigeration system two, refrigeration system three and refrigeration system four, motor, axle stream wind Machine, humidifier, reheater condenser electromagnetic valve three, reheater condenser electromagnetic valve four, condenser electromagnetic valve three and condenser electromagnetic valve Four start-stop or load proportion, it is ensured that the humiture of air-conditioned room reaches sets requirement.

Described double low-temperature receiver latent heat process the control method of low-temperature air conditioner, wherein, in step sl, when by showing operation When the low-temperature receiver method of supplying that interface selection determines is chilled water low-temperature receiver, step S3 specifically includes following steps:

Step s11:Central control module control flow-control water valve is opened, and refrigeration system one and refrigeration system are closed in control Two, open refrigeration system three and refrigeration system four;

Step s12:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is big In room humidity setting value, it is that execution step s13- step s18 is no, execution step s19- step s114;

Step s13:Central control module control does not turn off the flow that big flow controls water valve;

Step s14:Central control module judges flow-control water valve whether standard-sized sheet, is, execution step s15- step s17, It is no, execution step s18;

Step s15:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is big In room humidity setting value, it is that execution step S15 is no, execution step S16;

Step s16:Reheater condenser electromagnetic valve three and reheater condenser electromagnetic valve four are opened in central control module control, are closed Close condenser electromagnetic valve three and condenser electromagnetic valve four, to process air carry out reheating wet down, it is ensured that air-conditioned room it is warm and humid Degree reaches sets requirement;

Step s17:Execution step S14;

Step s18:Execution step S13;

Step s19:Central control module control constantly turns down the flow of flow-control water valve;

Step s110:Central control module judges whether flow-control water valve is fully closed, is, execution step s111- step S113, no, execution step s114;

Step s111:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is little In room humidity setting value, it is that execution step s112 is no, execution step s113;

Step s112:Central control module control is opened humidifier and is humidified according to room humidity setting value step-less adjustment Amount, it is ensured that the humiture of air-conditioned room reaches sets requirement;

Step s113:Execution step S110;

Step s114:Execution step S19.

Described double low-temperature receiver latent heat process the control method of low-temperature air conditioner, wherein, in step sl, when by showing operation When the low-temperature receiver method of supplying that interface selection determines is compressor low-temperature receiver, step S3 specifically includes following steps:

Step s21:Flow-control water valve is closed in central control module control, opens refrigeration system one, refrigeration system two, system Cooling system three and refrigeration system four;

Step s22:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is big In room humidity setting value, it is that execution step s23- step s28 is no, execution step s29- step s214;

Step s23:Refrigeration system two and refrigeration system one are opened in central control module control in order step by step;

Step s24:Central control module judges whether refrigeration system two and refrigeration system one all have been switched on, and is, performs Step s25- s27, no, execution step s28;

Step s25:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is big In room humidity setting value, it is that execution step s26 is no, execution step s27;

Step s26:Reheater condenser electromagnetic valve three and reheater condenser electromagnetic valve four are opened in central control module control, are closed Close condenser electromagnetic valve three and condenser electromagnetic valve four, to process air carry out reheating wet down, it is ensured that air-conditioned room it is warm and humid Degree reaches sets requirement;

Step s27:Execution step s25;

Step s28:Execution step s24;

Step s29:Refrigeration system two and refrigeration system one are closed in central control module control in order step by step;

Step s210:Central control module judges whether refrigeration system two and refrigeration system one all have been switched off, and is, performs Step s211- s213, no, execution step s214;

Step s211:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is little In room humidity setting value, it is that execution step s212 is no, execution step s213;

Step s212:Central control module control is opened humidifier and is humidified according to room humidity setting value step-less adjustment Amount, it is ensured that the humiture of air-conditioned room reaches sets requirement;

Step s213:Execution step s25;

Step s214:Execution step s210.

Described double low-temperature receiver latent heat process the control method of low-temperature air conditioners, wherein, also include in whole control flow with Lower defrosting step:

Step K1:Evaporating pressure feedback in four real-time detection pipeline of evaporating pressure controller three and evaporating pressure controller To central control module, central control module judges that real-time evaporating pressure, whether less than evaporating pressure setting value, is, execution step K2- steps K5, no, execution step K6;

Step K2:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are opened, and make compressor three and pressure The high temperature refrigerant superheated vapor of contracting machine four enters three-level vaporizer and level Four vaporizer, to remove frosting;

Step K3:Central control module judges to be obtained by evaporating pressure controller three and four real-time detection of evaporating pressure controller Whether the pipeline evaporating pressure for arriving is resetted with pressure higher than evaporating pressure setting value sets difference sum, is, execution step K4, It is no, execution step K5;

Step K4:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are closed, and stopping allows compressor three Three-level vaporizer and level Four vaporizer are entered with the high temperature refrigerant superheated vapor of compressor four;

Step K5:Execution step K3;

Step K6:Execution step K1.

Beneficial effects of the present invention:The present invention processes low-temperature air conditioner unit and its control by providing a kind of pair of low-temperature receiver latent heat Method, using various innovation structures such as double low-temperature receiver designs, step air latent heat cooling treatment mode and energy-conservation reheating, uses That what is innovated prevents frosting, Defrost mode and intelligent control method, efficiently solves traditional list low-temperature receiver single-stage latent heat and processes low temperature Efficiency that air conditioner product occurs is low, longtime running is unstable, control accuracy is not high, and the higher homoiothermic of efficiency cannot be utilized to use The problem of air conditioning water low-temperature receiver;Compared with traditional list low-temperature receiver single-stage latent heat processes low-temperature air conditioner machine, Energy Efficiency Ratio is higher, more supernumerary segment The about energy;Reasonable in design, energy-efficient, control accuracy of the invention is high, stable and reliable operation, and possesses double low-temperature receiver selection functions, The homoiothermic that efficiency can be utilized higher is freezed with air conditioning water low-temperature receiver;The effectively save energy of energy, reduction environmental pollution, meet state Energy-conservation and environmental protection policy that family advocates.

Description of the drawings

Fig. 1 is the front view of double low-temperature receiver latent heat process low-temperature air conditioner units in the present invention.

Fig. 2 is the left view of double low-temperature receiver latent heat process low-temperature air conditioner units in the present invention.

Fig. 3 is the inside connection diagram of double low-temperature receiver latent heat process low-temperature air conditioner units in the present invention.

Fig. 4 is the step of double low-temperature receiver latent heat process low-temperature air conditioner unit allocation method in present invention flow chart.

Specific embodiment

To make the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings The present invention is further described.

As Figure 1-3, this pair of low-temperature receiver latent heat processes low-temperature air conditioner includes outside framework component, air treatment system, coolant Water cooling system, refrigeration system one, refrigeration system two, refrigeration system three, refrigeration system four and control system.

The outside framework component includes base 110 and outside framework 120, and the outside framework 120 is fixedly installed on base 110 On, air inlet 121 and air outlet 122 are provided with the outside framework 120, the top of outside framework 120 is provided with multiple stage axle stream wind Machine 123, the axial flow blower 123 are connected with control system, and axial flow blower 123 provides the dynamic of gas flow for whole low-temperature air conditioner Power;The air treatment system, coolant water cooling system, refrigeration system one, refrigeration system two, refrigeration system three and refrigeration system Four are all disposed within outside framework 120.

The air treatment system includes humidifier 210, motor 220 and pressure fan 230, and the humidifier 210 is arranged on In outside framework 120, pressure fan 230 is arranged at air outlet 122, and motor 220 is connected with pressure fan 230,210 He of the humidifier Motor 220 is all connected with control system.

In order to control the intake of low-temperature air conditioner, air-valve 125 at the air inlet 121, is provided with.In order to prevent in air Debris enter low-temperature air conditioner, affect the operation of internal unit, at the air inlet 121, be provided with air filter 126:Hot blast Contaminant filter is carried out by 125 air inlet filter 126 of air-valve, each equipment in outside framework 120 is entered back into.

The coolant water cooling system includes Surface cooling coil 310, and the Surface cooling coil 310 passes through water inlet pipe and outlet pipe connects High-temperature air conditioner system is connected to, flow-control water valve 320, the flow-control water valve 320 and control on the water inlet pipe, is provided with System connects:Chilled water is introduced into flow flow-control water valve 320, then enters Surface cooling coil 310 by water inlet pipe, cold in table Chilled water in coil pipe 310 is to being cooled down by the moving air of Surface cooling coil fin, after chilled water is exchanged heat with hot-air, empty Temperature degree is reduced, and chilled water own temperature is raised, and the chilled water after intensification exits into high-temperature air conditioner system by outlet pipe.

The refrigeration system one includes compressor 1, condenser 1, reservoir 1, device for drying and filtering 1 With one-level vaporizer 480, the compressor 1, condenser 1, reservoir 1, device for drying and filtering 1 and one-level Vaporizer 480 connects the circulation loop to form cold-producing medium between any two by pipeline, and the compressor 1 is connected with control system Connect.

In order to realize the flow direction and Stress control of cold-producing medium in compressor 1, the compressor 1 import and Exit is both provided with non-return valve one and pressure switch one.In order to ensure the work quality of one-level vaporizer 480, evaporate in one-level The entrance of device 480 is provided with expansion valve one, realizes throttling to the cold-producing medium into one-level vaporizer 480 and controls the work of flow With.

The refrigeration system two includes compressor 2 510, condenser 2 540, reservoir 2 550, device for drying and filtering 2 560 With secondary evaporimeter 580, the compressor 2 510, condenser 2 540, reservoir 2 550, device for drying and filtering 2 560 and two grades Vaporizer 580 connects the circulation loop to form cold-producing medium between any two by pipeline, described, the compressor 2 510 and control System connects.

In order to realize the flow direction and Stress control of cold-producing medium in compressor 2 510, the compressor 2 510 import and Exit is both provided with non-return valve two and pressure switch two.In order to ensure the work quality of secondary evaporimeter 580, in dual evaporation The entrance of device 580 is provided with expansion valve two, realizes throttling to the cold-producing medium into secondary evaporimeter 580 and controls the work of flow With.

The refrigeration system three includes compressor 3 610, condenser 3 660, reheater condenser 3 670, reservoir three 690th, device for drying and filtering 3 620, three-level vaporizer 630 and gas-liquid separator 3 680, the compressor 3 610, condenser three 660th, reservoir 3 690, device for drying and filtering 3 620, three-level vaporizer 630 and gas-liquid separator 3 680 are between any two by pipe Road connects to form loop, and the condenser 3 660 is also connected with reheater condenser 3 670, reheater condenser 3 670 and compressor 3 610 connections;Condenser electromagnetic valve 3 640 is provided between compressor 3 610 and condenser 3 660, in reheater condenser Reheater condenser electromagnetic valve 3 650 is provided between 3 670 and compressor 3 610, in compressor 3 610 and three-level vaporizer Defrosting electromagnetic valve three is provided between 630, evaporating pressure controller is connected with the air inlet pipeline of the compressor 3 610 Three;The compressor 3 610, condenser electromagnetic valve 3 640, reheater condenser electromagnetic valve 3 650, defrosting electromagnetic valve three and evaporation Pressure controller three is all connected with control system.

In order to realize the flow direction and Stress control of cold-producing medium in compressor 3 610, the compressor 3 610 import and Exit is both provided with non-return valve three and pressure switch three.In order to ensure the work quality of three-level vaporizer 630, evaporate in three-level The entrance of device 630 is provided with expansion valve three, realizes throttling to the cold-producing medium into three-level vaporizer 630 and controls the work of flow With.In order to prevent adverse current, between the condenser 3 660 and reservoir 3 690, condenser 3 660 and reheater condenser 3 670 Between be provided with check valve three.

The refrigeration system four includes compressor 4 710, condenser 4 760, reheater condenser 4 770, reservoir four 790th, device for drying and filtering 4 720, level Four vaporizer 730 and gas-liquid separator 4 780, the compressor 4 710, condenser four 760th, reservoir 4 790, device for drying and filtering 4 720, level Four vaporizer 730 and gas-liquid separator 4 780 are between any two by pipe Road connects to form loop, and the condenser 4 760 is also connected with reheater condenser 4 770, reheater condenser 4 770 and compressor 4 710 connections;Condenser electromagnetic valve 4 740 is provided between compressor 4 710 and condenser 4 760, in reheater condenser Reheater condenser electromagnetic valve 4 750 is provided between 4 770 and compressor 4 710, in compressor 4 710 and level Four vaporizer Defrosting electromagnetic valve four is provided between 730, evaporating pressure controller is connected with the air inlet pipeline of the compressor 4 710 Three;The compressor 4 710, condenser electromagnetic valve 4 740, reheater condenser electromagnetic valve 4 750, defrosting electromagnetic valve four and evaporation Pressure controller four is all connected with control system.

In order to realize the flow direction and Stress control of cold-producing medium in compressor 4 710, the compressor 4 710 import and Exit is both provided with non-return valve four and pressure switch four.In order to ensure the work quality of level Four vaporizer 730, evaporate in level Four The entrance of device 730 is provided with expansion valve four, realizes throttling to the cold-producing medium into level Four vaporizer 730 and controls the work of flow With.In order to prevent adverse current, between the condenser 4 760 and reservoir 4 790, condenser 4 760 and reheater condenser 4 770 Between be provided with check valve four.

The control system includes electric control box 810, room temperature sensor 820, room humidity sensor 830, enters Air temperature sensor 840 and air intake humidity sensor 850, the electric control box 810 include sensor data acquisition module, in Centre control module and operation display interface, the room temperature sensor 820, room humidity sensor 830, inlet temperature sensing Device 840 and air intake humidity sensor 850 are all connected with sensor data acquisition module, and sensor data acquisition module and display are grasped Make interface to be all connected with central control module;The axial flow blower 123, motor 220, humidifier 210, flow-control water valve 320, Compressor 1, compressor 2 510, compressor 3 610, condenser electromagnetic valve 3 640, reheater condenser electromagnetic valve 3 650, Defrosting electromagnetic valve three, evaporating pressure controller three, compressor 4 710, condenser electromagnetic valve 4 740, reheater condenser electromagnetic valve 4 750, defrosting electromagnetic valve four and evaporating pressure controller four are all connected with central control module.

In order to prevent that the normal operation of equipment in outside framework 120 is affected in the condensation hydropexis outside framework 120 of vaporizer, The bottom of the outside framework 120 is provided with drip tray 124, and drip tray 124 is placed in one-level vaporizer, secondary evaporimeter, three-level and steams Send out the lower section of device and level Four vaporizer:It is cold that one-level vaporizer, secondary evaporimeter, three-level vaporizer and level Four vaporizer are stayed Solidifying water from top to bottom stay drip tray 124, then discharged by drain pipe.

This pair of low-temperature receiver latent heat processes low-temperature air conditioner and realizes that the flow process of air step latent heat process is as follows:Air is by air inlet 121 first pass through, and filter out various dusts and the impurity in air, then cold by table Coil pipe 310 carries out one-level cooling, then carries out two grades of coolings by one-level vaporizer 480, is then entered by secondary evaporimeter 580 Row three-level is cooled down, and entering back into three-level vaporizer 630 carries out level Four cooling, and entrance level Four vaporizer 730 most carries out Pyatyi cooling, Then carry out reheating wet down or carry out constant enthalpy by humidifier 210 adding by reheater condenser 3 670, reheater condenser 4 770 It is wet, after process reaches air-supply requirement, air-conditioned room is delivered to by pressure fan 230.

As shown in figure 4, a kind of double low-temperature receiver latent heat as described above process the control method of low-temperature air conditioners, specifically include with Lower step:

Step S1:It is input into room temperature set point, room humidity setting value, selects to determine low-temperature receiver by operation display interface Method of supplying, evaporating pressure setting value and pressure reset and set difference;

Step S2:Sensor data acquisition module Real-time Collection is by room temperature sensor 820, room humidity sensor 830th, inlet temperature sensor 840 and air intake humidity sensor 850 detect room humiture information, the air intake humiture letter for obtaining Breath, by room humiture information and air intake humiture information transmission to central control module, evaporating pressure controller three and evaporation Evaporating pressure in four real-time detection pipeline of pressure controller is sent to central control module;

Step S3:Instruction and the humiture information obtained according to step S2 that central control module is input into according to step S1, Automatic control flow control water valve 320, refrigeration system one, refrigeration system two, refrigeration system three and refrigeration system four, motor 220, Axial flow blower 123, humidifier 210, reheater condenser electromagnetic valve 3 650, reheater condenser electromagnetic valve 4 750, condenser electromagnetism The start-stop or load proportion of valve 3 640 and condenser electromagnetic valve 4 740, it is ensured that the humiture of air-conditioned room reaches setting will Ask.

In step sl, when the low-temperature receiver method of supplying that determination is selected by operation display interface is chilled water low-temperature receiver, step Rapid S3 specifically includes following steps:

Step s11:Central control module control flow-control water valve 320 is opened, and refrigeration system one and refrigeration are closed in control System two, opens refrigeration system three and refrigeration system four;

Step s12:Central control module judges the room humidity that obtained by 830 real-time detection of room humidity sensor whether More than room humidity setting value, it is that execution step s13- step s18 is no, execution step s19- step s114;

Step s13:Central control module control does not turn off the flow that big flow controls water valve 320;

Step s14:Central control module judges the whether standard-sized sheet of flow-control water valve 320, is, execution step s15- step S17, no, execution step s18;

Step s15:Central control module judges the room humidity that obtained by 830 real-time detection of room humidity sensor whether More than room humidity setting value, it is that execution step s15 is no, execution step s16;

Step s16:Reheater condenser electromagnetic valve 3 650 and reheater condenser electromagnetic valve four are opened in central control module control 750, condenser electromagnetic valve 3 640 and condenser electromagnetic valve 4 740 are closed, the air to processing carries out reheating wet down, it is ensured that empty Humiture between transferring house reaches sets requirement;

Step s17:Execution step s14;

Step s18:Execution step s13;

Step s19:Central control module control constantly turns down the flow of flow-control water valve 320;

Step s110:Central control module judges whether flow-control water valve 320 is fully closed, is, execution step s111- step S113, no, execution step s114;

Step s111:Central control module judges that the room humidity obtained by 830 real-time detection of room humidity sensor is It is no less than room humidity setting value, be that execution step s112 is no, execution step s113;

Step s112:Central control module control is opened humidifier 210 and is added according to room humidity setting value step-less adjustment Moisture, it is ensured that the humiture of air-conditioned room reaches sets requirement;

Step s113:Execution step s110;

Step s114:Execution step s19.

In step sl, when the low-temperature receiver method of supplying that determination is selected by operation display interface is compressor low-temperature receiver, step Rapid S3 specifically includes following steps:

Step s21:Flow-control water valve 320 is closed in central control module control, opens refrigeration system one, refrigeration system 2nd, refrigeration system three and refrigeration system four;

Step s22:Central control module judges the room humidity that obtained by 830 real-time detection of room humidity sensor whether More than room humidity setting value, it is that execution step s23- step s28 is no, execution step s29- step s214;

Step s23:Refrigeration system two and refrigeration system one are opened in central control module control in order step by step;

Step s24:Central control module judges whether refrigeration system two and refrigeration system one all have been switched on, and is, performs Step s25- s27, no, execution step s28;

Step s25:Central control module judges the room humidity that obtained by 830 real-time detection of room humidity sensor whether More than room humidity setting value, it is that execution step s26 is no, execution step s27;

Step s26:Reheater condenser electromagnetic valve 3 650 and reheater condenser electromagnetic valve four are opened in central control module control 750, condenser electromagnetic valve 3 640 and condenser electromagnetic valve 4 740 are closed, the air to processing carries out reheating wet down, it is ensured that empty Humiture between transferring house reaches sets requirement;

Step s27:Execution step s25;

Step s28:Execution step s24;

Step s29:Refrigeration system two and refrigeration system one are closed in central control module control in order step by step;

Step s210:Central control module judges whether refrigeration system two and refrigeration system one all have been switched off, and is, performs Step s211- s213, no, execution step s214;

Step s211:Central control module judges that the room humidity obtained by 830 real-time detection of room humidity sensor is It is no less than room humidity setting value, be that execution step s212 is no, execution step s213;

Step s212:Central control module control is opened humidifier 210 and is added according to room humidity setting value step-less adjustment Moisture, it is ensured that the humiture of air-conditioned room reaches sets requirement;

Step s213:Execution step s25;

Step s214:Execution step s210.

In order to prevent the vaporizer of refrigeration system three and refrigeration system four from reducing because of temperature, there is existing frosting, cause refrigeration The evaporating pressure of system declines, and also includes following defrosting step in whole control flow simultaneously:

Step K1:Evaporating pressure feedback in four real-time detection pipeline of evaporating pressure controller three and evaporating pressure controller To central control module, central control module judges that real-time evaporating pressure, whether less than evaporating pressure setting value, is, execution step K2- steps K5, no, execution step K6;

Step K2:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are opened, and make 3 610 He of compressor The high temperature refrigerant superheated vapor of compressor 4 710 enters three-level vaporizer 630 and level Four vaporizer 730, to remove frosting;

Step K3:Central control module judges to be obtained by evaporating pressure controller three and four real-time detection of evaporating pressure controller Whether the pipeline evaporating pressure for arriving is resetted with pressure higher than evaporating pressure setting value sets difference sum, is, execution step K4, It is no, execution step K5;

Step K4:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are closed, and stopping allows compressor three 610 and the high temperature refrigerant superheated vapor of compressor 4 710 enter three-level vaporizer 630 and level Four vaporizer 730;

Step K5:Execution step K3;

Step K6:Execution step K1.

Concrete advantages below of the invention:1st, the present invention, can when system only need to run sub-load using double low-temperature receiver designs Air conditioner coolant water more than needed using the offer of Selection utilization high-temperature air conditioner system is saved this pair of low-temperature receiver latent heat as far as possible and is processed as low-temperature receiver The energy consumption of low-temperature air conditioner, while can also solve the problems, such as that the cold more than needed of high-temperature air conditioner system chilled water is wasted;It is full in system During load operation, it is also possible to which Selection utilization refrigeration system provides low-temperature receiver, with flexible low-temperature receiver selection function, can preferentially utilize energy The higher homoiothermic low-temperature receiver of effect carries out energy-conservation.2nd, the present invention adopts step air latent heat cooling treatment mode, and Energy Efficiency Ratio is high, saves energy Source:Traditional list low-temperature receiver single-stage latent heat processes low-temperature air conditioner unit and adopts refrigeration system list low-temperature receiver and single-stage refrigeration mode, for example, Inlet temperature is 30 DEG C, and when to need wind pushing temperature be 7 DEG C, the evaporating temperature of whole machine needs as little as -2~0 DEG C, makes traditional list low-temperature receiver The compressor operating efficiency that single-stage latent heat processes low-temperature air conditioner unit is at a fairly low;The present invention is using multistage refrigerating plant and double low-temperature receivers The type of cooling, cool-down dehumidification step by step, compared with traditional single low-temperature receiver single-stage latent heat processes low-temperature air conditioner unit, Energy Efficiency Ratio is high: For example, it is 30 DEG C in inlet temperature, when to need wind pushing temperature be 7 DEG C, point level Four refrigeration system cooling and dehumidifying step by step, fourth stage system As little as -2~0 DEG C of the evaporating temperature of cooling system, but the evaporating temperature of remaining refrigeration system can be at 10~15 DEG C, greatly improve The evaporating temperature of prime refrigeration system, so as to significantly improve the Energy Efficiency Ratio of whole machine, energy saving.3rd, the present invention is using innovation Prevent frosting and defrosting mode, make unit long-play reliable and stable:It is empty that traditional list low-temperature receiver single-stage latent heat processes low temperature Unit is adjusted, when leaving air temp is relatively low, the evaporating temperature of vaporizer is less than 0 DEG C, easily causes evaporator fin frosting, during operation Between it is longer, frosting is more serious, and frosting can block evaporator fin, increases the air drag of vaporizer, reduces ventilation, further Evaporating temperature is reduced, unit low-voltage variation is easily caused long lasting for operation, could open once again after needing to shut down defrosting Situation, application process trouble, leaving air temp and refrigerating capacity become to be not sufficiently stable due to frosting, it is impossible to which long-time provides equilibrium temperature With the air-conditioning of flow, comfortableness is relatively low;The mode for preventing frosting and defrosting of application innovation of the present invention, when rear class refrigeration is The vaporizer of system three and refrigeration system four is reduced because of temperature, and when there is existing frosting, the evaporating pressure of refrigeration system declines, refrigeration system When the pipeline evaporating pressure that the evaporating pressure controller of system three and refrigeration system four is detected is less than pressure set points, refrigeration system Three and refrigeration system four defrosting electromagnetic valve open, the high temperature refrigerant superheated vapor of compressor exhaust pipe is entered into refrigeration system Three and system

Behind the expansion valve of cooling system four, high temperature hot gas are allowed to enter refrigeration system three and refrigeration system that vaporizer heats frosting Unite four vaporizers, remove frosting, after frosting defrosting is finished, evaporating pressure rises, the steaming of refrigeration system three and refrigeration system four Send out the pipeline evaporating pressure that detects of pressure controller higher than pressure set points and pressure reset setting difference sum when, refrigeration system The defrosting closed electromagnetic valve of system three and refrigeration system four, stopping allow high pressure refrigerant vapor to enter vaporizer.4th, tradition list low-temperature receiver Single-stage latent heat processes low-temperature air conditioner unit, and using electric heater as reheating humidity regulation, and the present invention is condensed using energy-conservation reheating Device substitutes the electrical heating of conventional rack using air-conditioning waste heat, has saved a large amount of electric energy of reheating humidity regulation needs.

This pair of low-temperature receiver latent heat process low-temperature air conditioner using double low-temperature receiver designs, step air latent heat cooling treatment mode and Various innovation structures such as energy-conservation reheating, prevent frosting, Defrost mode and intelligent control method with what is innovated, efficiently solve Traditional list low-temperature receiver single-stage latent heat processes that the efficiency that low-temperature air conditioner machine product occurs is low, longtime running is unstable, control accuracy is not high, And the homoiothermic that efficiency cannot the be utilized higher problem of air conditioning water low-temperature receiver;When there is frosting in running in unit, nothing Defrosting need to be shut down, leaving air temp is not affected by frosting, long-play provides stable air-conditioning, so as to ensure it is in office when The humid control precision of time;Compared with traditional list low-temperature receiver single-stage latent heat processes low-temperature air conditioner machine, Energy Efficiency Ratio is higher, more saves energy Source;Reasonable in design, energy-efficient, control accuracy of the invention is high, stable and reliable operation, and possesses double low-temperature receiver selection functions, can be with Freezed using efficiency higher homoiothermic air conditioning water low-temperature receiver;The effectively save energy of energy, reduction environmental pollution, meet country and advocate The energy-conservation led and environmental protection policy.

It should be appreciated that the application of the present invention is not limited to above-mentioned citing, and for those of ordinary skills, can To be improved according to the above description or be converted, all these modifications and variations should all belong to the guarantor of claims of the present invention Shield scope.

Claims (10)

1. a kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that including outside framework component, air treatment system, Coolant water cooling system, refrigeration system one, refrigeration system two, refrigeration system three, refrigeration system four and control system;
The outside framework component includes base and outside framework, and outside framework is fixedly installed on base, is provided with the outside framework Air inlet and air outlet, are provided with multiple stage axial flow blower at the top of outside framework, axial flow blower provides gas for whole low-temperature air conditioner The power of flow direction;The air treatment system, coolant water cooling system, refrigeration system one, refrigeration system two, three and of refrigeration system Refrigeration system four is all disposed within outside framework;
The air treatment system includes humidifier, motor and pressure fan, and the humidifier is arranged in outside framework, and pressure fan sets Put at air outlet, motor is connected with pressure fan;
The coolant water cooling system includes Surface cooling coil, and it is empty that the Surface cooling coil is connected to high temperature by water inlet pipe and outlet pipe Adjusting system, is provided with flow-control water valve on the water inlet pipe;
The refrigeration system one includes compressor one, condenser one, reservoir one, device for drying and filtering one and one-level vaporizer, institute State compressor one, condenser one, reservoir one, device for drying and filtering one and one-level vaporizer to connect to be formed by pipeline between any two The circulation loop of cold-producing medium;The structure setting of the refrigeration system two is consistent with refrigeration system one;
The refrigeration system three includes compressor three, condenser three, reheater condenser three, reservoir three, device for drying and filtering three, three Level vaporizer and gas-liquid separator three, the compressor three, condenser three, reservoir three, device for drying and filtering three, three-level vaporizer Connect to form loop by pipeline with gas-liquid separator three between any two, the condenser three is also connected with reheater condenser three, Reheater condenser three is connected with compressor three;Condenser electromagnetic valve three is provided between compressor three and condenser three, again Reheater condenser electromagnetic valve three is provided between reheater condenser three and compressor three, is set between compressor three and three-level vaporizer Defrosting electromagnetic valve three is equipped with, evaporating pressure controller three is connected with the air inlet pipeline of compressor three;The refrigeration system four Structure setting it is consistent with refrigeration system three;
The control system include electric control box, room temperature sensor, room humidity sensor, inlet temperature sensor and Air intake humidity sensor, the electric control box include sensor data acquisition module, central control module and show operation circle Face, the room temperature sensor, room humidity sensor, inlet temperature sensor and air intake humidity sensor all with sensor Data acquisition module connects, and sensor data acquisition module and operation display interface are all connected with central control module;The axle Flow fan, motor, humidifier, flow-control water valve, compressor one, compressor two, compressor three, condenser electromagnetic valve three, again Reheater condenser electromagnetic valve three, defrosting electromagnetic valve three, evaporating pressure controller three, compressor four, condenser electromagnetic valve four, reheating are cold Condenser electromagnetic valve four, defrosting electromagnetic valve four and evaporating pressure controller four are all connected with central control module.
2. according to claim 1 pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that in the compressor one Inlet and outlet be both provided with non-return valve one and pressure switch one;The entrance of one-level vaporizer is provided with expansion valve one; Non-return valve two and pressure switch two are both provided with the inlet and outlet of the compressor two;Set in the entrance of secondary evaporimeter It is equipped with expansion valve two.
3. according to claim 1 pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that in the compressor three Inlet and outlet be both provided with non-return valve three and pressure switch three;The entrance of three-level vaporizer is provided with expansion valve three; Check valve three is provided between the condenser three and reservoir three, between condenser three and reheater condenser three;In the pressure The inlet and outlet of contracting machine four is provided with non-return valve four and pressure switch four;The entrance of level Four vaporizer is provided with expansion valve Four;Check valve four is provided between the condenser four and reservoir four, between condenser four and reheater condenser four.
4. according to claim 3 pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that the air inlet sets It is equipped with air-valve.
5. according to claim 4 pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that the air inlet is also It is provided with air filter:Hot blast carries out contaminant filter by air-valve air inlet filter, enters back in outside framework.
6. according to claim 5 pair of low-temperature receiver latent heat processes low-temperature air conditioner unit, it is characterised in that the bottom of the outside framework Portion is provided with drip tray, and drip tray is placed in the lower section of one-level vaporizer, secondary evaporimeter, three-level vaporizer and level Four vaporizer, The external drain pipe of drip tray.
7. a kind of double low-temperature receiver latent heat as described in 6 any one of claim 1- process the control method of low-temperature air conditioner unit, its It is characterised by, specifically includes following steps:
Step S1:Room temperature set point, room humidity setting value are input into by operation display interface, select to determine low-temperature receiver supply Mode, evaporating pressure setting value and pressure reset and set difference;
Step S2:Sensor data acquisition module Real-time Collection is by room temperature sensor, room humidity sensor, inlet temperature Sensor and air intake humidity sensor detect room humiture information, the air intake humiture information for obtaining, and room humiture is believed Breath and air intake humiture information transmission are examined in real time to central control module, evaporating pressure controller three and evaporating pressure controller four Evaporating pressure in test tube road is sent to central control module;
Step S3:Instruction and the humiture information obtained according to step S2 that central control module is input into according to step S1, automatically Control flow-control water valve, refrigeration system one, refrigeration system two, refrigeration system three and refrigeration system four, motor, axial flow blower, Humidifier, reheater condenser electromagnetic valve three, reheater condenser electromagnetic valve four, condenser electromagnetic valve three and condenser electromagnetic valve four Start-stop or load proportion, it is ensured that the humiture of air-conditioned room reaches sets requirement.
8. the according to claim 7 pair of low-temperature receiver latent heat processes the control method of low-temperature air conditioner unit, it is characterised in that in step In rapid S1, when the low-temperature receiver method of supplying that determination is selected by operation display interface is chilled water low-temperature receiver, step S3 is specifically included Following steps:
Step s11:Central control module control flow-control water valve is opened, and refrigeration system one and refrigeration system two are closed in control, Open refrigeration system three and refrigeration system four;
Step s12:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is more than room Between humidity set point, be that execution step s13- step s18 is no, execution step s19- step s114;
Step s13:Central control module control does not turn off the flow that big flow controls water valve;
Step s14:Central control module judges flow-control water valve whether standard-sized sheet, is that execution step s15- step s17 is no, Execution step s18;
Step s15:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is more than room Between humidity set point, be that execution step s15 is no, execution step s16;
Step s16:Reheater condenser electromagnetic valve three and reheater condenser electromagnetic valve four are opened in central control module control, are closed cold Condenser electromagnetic valve three and condenser electromagnetic valve four, the air to processing carry out reheating wet down, it is ensured that the humiture of air-conditioned room is equal Reach sets requirement;
Step s17:Execution step s14;
Step s18:Execution step s13;
Step s19:Central control module control constantly turns down the flow of flow-control water valve;
Step s110:Central control module judges whether flow-control water valve is fully closed, is, execution step s111- step s113, It is no, execution step s114;
Step s111:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is less than room Between humidity set point, be that execution step s112 is no, execution step s113;
Step s112:Central control module control opens humidifier and according to room humidity setting value step-less adjustment humidification amount, really The humiture for protecting air-conditioned room reaches sets requirement;
Step s113:Execution step s110;
Step s114:Execution step s19.
9. the according to claim 7 pair of low-temperature receiver latent heat processes the control method of low-temperature air conditioner unit, it is characterised in that in step In rapid S1, when the low-temperature receiver method of supplying that determination is selected by operation display interface is compressor low-temperature receiver, step S3 is specifically included Following steps:
Step s21:Flow-control water valve is closed in central control module control, opens refrigeration system one, refrigeration system two, refrigeration system System three and refrigeration system four;
Step s22:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is more than room Between humidity set point, be that execution step s23- step s28 is no, execution step s29- step s214;
Step s23:Refrigeration system two and refrigeration system one are opened in central control module control in order step by step;
Step s24:Central control module judges whether refrigeration system two and refrigeration system one all have been switched on, and is, execution step S25- s27, no, execution step s28;
Step s25:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is more than room Between humidity set point, be that execution step s26 is no, execution step s27;
Step s26:Reheater condenser electromagnetic valve three and reheater condenser electromagnetic valve four are opened in central control module control, are closed cold Condenser electromagnetic valve three and condenser electromagnetic valve four, the air to processing carry out reheating wet down, it is ensured that the humiture of air-conditioned room is equal Reach sets requirement;
Step s27:Execution step s25;
Step s28:Execution step s24;
Step s29:Refrigeration system two and refrigeration system one are closed in central control module control in order step by step;
Step s210:Central control module judges whether refrigeration system two and refrigeration system one all have been switched off, and is, execution step S211- s213, no, execution step s214;
Step s211:Central control module judges whether the room humidity obtained by room humidity sensor real-time detection is less than room Between humidity set point, be that execution step s212 is no, execution step s213;
Step s212:Central control module control opens humidifier and according to room humidity setting value step-less adjustment humidification amount, really The humiture for protecting air-conditioned room reaches sets requirement;
Step s213:Execution step s25;
Step s214:Execution step s210.
10. double low-temperature receiver latent heat according to claim 8 or claim 9 process the control method of low-temperature air conditioner unit, it is characterised in that Also include following defrosting step in whole control flow:
Step K1:During evaporating pressure in four real-time detection pipeline of evaporating pressure controller three and evaporating pressure controller feeds back to Centre control module, central control module judge that real-time evaporating pressure, whether less than evaporating pressure setting value, is, execution step K2- Step K5, no, execution step K6;
Step K2:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are opened, and make compressor three and compressor Four high temperature refrigerant superheated vapor enters three-level vaporizer and level Four vaporizer, to remove frosting;
Step K3:Central control module judges what is obtained by evaporating pressure controller three and four real-time detection of evaporating pressure controller Whether pipeline evaporating pressure is resetted with pressure higher than evaporating pressure setting value sets difference sum, is that execution step K4 is no, holds Row step K5;
Step K4:Central control module control defrosting electromagnetic valve three and defrosting electromagnetic valve four are closed, and stopping allows compressor three and pressure The high temperature refrigerant superheated vapor of contracting machine four enters three-level vaporizer and level Four vaporizer;
Step K5:Execution step K3;
Step K6:Execution step K1.
CN201410580661.6A 2014-10-27 2014-10-27 A kind of pair of low-temperature receiver latent heat processes low-temperature air conditioner unit and its control method CN104359166B (en)

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