CN207797334U - A kind of air-conditioning system of control air-out humidity - Google Patents

A kind of air-conditioning system of control air-out humidity Download PDF

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Publication number
CN207797334U
CN207797334U CN201820117181.XU CN201820117181U CN207797334U CN 207797334 U CN207797334 U CN 207797334U CN 201820117181 U CN201820117181 U CN 201820117181U CN 207797334 U CN207797334 U CN 207797334U
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air
conditioning
level
temperature sensor
humidity
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CN201820117181.XU
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李伟瀚
李敏华
陈露润
乡建飞
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Guangdong Haiwu Technology Co Ltd
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Guangdong Haiwu Technology Co Ltd
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Abstract

A kind of air-conditioning system of control air-out humidity,It is related to air-conditioning system technical field,Its structure includes compressor cooling and dehumidification system,Humidification system,Controller,Outdoor fan,Outdoor environment temperature sensor,Air-conditioning return air temperature sensor,Air-conditioning return air humidity sensor,Indoor fan and air conditioning exhausting temperature sensor,The compressor cooling and dehumidification system include sequentially connected compressor,Condenser,Level-one throttle valve,Level-one evaporator,Two-step throttle valve and secondary evaporimeter,The compressor cooling and dehumidification system further include by-passing valve,By-passing valve and level-one flow controller are in parallel,The humidification system includes humidifier,The compressor,Outdoor fan,Outdoor environment temperature sensor,Air-conditioning return air temperature sensor,Air-conditioning return air humidity sensor,Indoor fan,Air conditioning exhausting temperature sensor,Humidifier,Level-one throttle valve,Two-step throttle valve,By-passing valve is electrically connected with the controller respectively,And it is controlled by it.

Description

A kind of air-conditioning system of control air-out humidity
Technical field
The utility model is related to air-conditioning system technical fields, more particularly to a kind of air-conditioning system of control air-out humidity.
Background technology
Currently, controlling humidifier and start/stop of compressor and operational mode using outlet air Temperature and Humidity Control mode, usually It is controlled according to the deviation of the air-out humidity relative humidity that detects of probe and setting relative humidity, such as:When outlet air is relatively wet When spending detected value≤setting value -10%, humidifying mode is run, humidifier is opened, when air-out relative humidity detected value > setting values - When 5%, humidifying mode is exited, stops humidifier;When air-out relative humidity detected value >=setting value+15%, into dehumidifying mould Formula, EC wind turbines drop wind speed and open compressor exits dehumidification mode when air-out relative humidity detected value < setting value+5%, EC wind turbines are pressed corresponding rotating speed and are run, and compressor is closed.
Above technical solution has the following defects:Air-out humidity fluctuation is big, is unable to judge accurately best operational mode, Especially in the case of underload, such as:Outlet air humiture setting value is 22 DEG C/50%, if compressor does not start also, is then exchanged heat Humiture is consistent before and after device, it is assumed that is 37 DEG C/30%, water capacity is the dry air of 11.783g/kg, after compressor just startup not Long, outlet air dry-bulb temperature is basically unchanged than low 11 to 15 DEG C or so of return air dry bulb temperature, at this time air inlet/outlet water capacity, then goes out wind-warm syndrome Humidity substantially 23 DEG C/67%, since load is not high, unit can be according to temperature and humidity value automatically into dehumidification mode, and having at this time can Can occur more dehumidifying, higher situation, the relative humidity after a period of time in computer room are less than setting value, need to open air-out humidity instead Open humidifier humidifies.Dehumidifying and humidification are all the processes of a highly energy-consuming, can have a kind of method to drop data center module is highly desirable The highly energy-consuming of low dehumidifying and humidification.
Invention content
The purpose of this utility model is that avoiding shortcoming in the prior art and providing a kind of control air-out humidity Air-conditioning system is programmed for software engineer, and then can realize reduction energy consumption.
The purpose of this utility model is achieved through the following technical solutions:
A kind of air-conditioning system of control air-out humidity, including compressor cooling and dehumidification system, humidification system, control are provided Device, outdoor fan, outdoor environment temperature sensor, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, indoor fan With air conditioning exhausting temperature sensor, the compressor cooling and dehumidification system include sequentially connected compressor, condenser, level-one Throttle valve, level-one evaporator, two-step throttle valve and secondary evaporimeter, the compressor cooling and dehumidification system further include bypass Valve, by-passing valve and level-one flow controller are in parallel, and the humidification system includes humidifier, the compressor, outdoor fan, outdoor environment Temperature sensor, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, indoor fan, air conditioning exhausting temperature sensor, Humidifier, level-one throttle valve, two-step throttle valve, by-passing valve are electrically connected with the controller, and are controlled by it respectively.
Wherein, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor are mounted on the inlet side of secondary evaporimeter.
Wherein, air conditioning exhausting temperature sensor is mounted on the air side of level-one evaporator.
Wherein, level-one evaporator is mounted on the air side of secondary evaporimeter.
The beneficial effects of the utility model:
A kind of air-conditioning system of control air-out humidity of the utility model removes electric heater, and evaporator is divided into two level, increases Add a throttle valve and by-passing valve, when dehumidification mode, rotation speed of fan is constant, passes through level-one evaporator pair using compressor heat exhaust Cryogenic air after dehumidifying carries out thermal compensation, can reduce cost, reduces air conditioning energy consumption, may make that Temperature and Humidity Control is more in computer room Stablize.
Description of the drawings
Utility model is described further using attached drawing, but the embodiment in attached drawing does not constitute and appoints to the utility model What is limited, for those of ordinary skill in the art, without creative efforts, can also be according to the following drawings Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the air-conditioning system of control air-out humidity of the utility model.
Include in figure:
Compressor 1, condenser 2, outdoor fan 3, outdoor environment temperature sensor 4, controller 5, air-conditioning return air temperature pass Sensor 6, air-conditioning return air humidity sensor 7, level-one evaporator 8, indoor fan 9, air conditioning exhausting temperature sensor 10, humidifier 11, secondary evaporimeter 12, level-one throttle valve 13, two-step throttle valve 14, by-passing valve 15.
Specific implementation mode
The utility model is further described with the following Examples.
The air-conditioning system of a kind of control air-out humidity of the present embodiment, as shown in Figure 1, including compressor cooling and dehumidifying system System, humidification system, controller 5, outdoor fan 3, outdoor environment temperature sensor 4, air-conditioning return air temperature sensor 6, air-conditioning return Wind moisture sensor 7, indoor fan 9 and air conditioning exhausting temperature sensor 10, the compressor cooling and dehumidification system include according to Compressor 1, condenser 2, level-one throttle valve 13, level-one evaporator 8, two-step throttle valve 14 and the secondary evaporimeter 12 of secondary connection, The compressor cooling and dehumidification system further include by-passing valve 15, and by-passing valve 15 and level-one flow controller are in parallel, the humidification system Including humidifier 11, the compressor 1, outdoor fan 3, outdoor environment temperature sensor 4, air-conditioning return air temperature sensor 6, sky Recall to wind moisture sensor 7, indoor fan 9, air conditioning exhausting temperature sensor 10, humidifier 11, level-one throttle valve 13, two level section Stream valve 14, by-passing valve 15 are electrically connected with controller 5, and are controlled by it respectively.
Wherein, air-conditioning return air temperature sensor 6, air-conditioning return air humidity sensor 7 are mounted on the air inlet of secondary evaporimeter 12 Side, be respectively used to detect it is coming from the closing passage of heat or the big air-conditioning of computer room, without conditioned air temperature, humidity.
Wherein, air conditioning exhausting temperature sensor 10 is mounted on the air side of level-one evaporator 8, for detecting by air-conditioning Level-one evaporator 8 and secondary evaporimeter 12 treated air themperature.
Wherein, level-one evaporator 8 is mounted on the air side of secondary evaporimeter 12, the higher sky of humidity without air-conditioning processing After 12 cool-down dehumidification of secondary evaporimeter, since temperature is too low, leaving air temp sets requirement is not achieved in gas, need to pass through level-one Evaporator 8 makes final leaving air temp meet setting using 1 heat extraction of compressor to air of the heating from secondary evaporimeter 12 It is required that;If this effect is then not achieved in the location swap of level-one evaporator 8 and secondary evaporimeter 12.
A kind of air-conditioning system of control air-out humidity of the present embodiment removes electric heater, and evaporator is divided into two level, increases One throttle valve and by-passing valve 15, when dehumidification mode, rotation speed of fan is constant, passes through level-one evaporator 8 using 1 heat exhaust of compressor Thermal compensation is carried out to the Cryogenic air after dehumidifying, cost can be reduced, air conditioning energy consumption is reduced, may make Temperature and Humidity Control in computer room It is more stable.
A kind of control method of the air-conditioning system of control air-out humidity of the present embodiment, first passes through the leaving air temp of setting Tos, setting air-out humidity Hs, it is as follows to calculate outlet air dew-point temperature setting value Tds:
Wherein:
The return air temperature Til combination outlet air dew-point temperature setting values detected again by air-conditioning return air temperature sensor 6 It is as follows to calculate return air humidity set point Hi by Tds:
Hi=10 (β -6+2) is wherein:
In above-mentioned formula, a, b are coefficient, when 0 DEG C of t >, take a=7.5, b=237.3;When t≤0 DEG C, a=9.5, b=are taken 265.5。
Such as:Tos=23 DEG C of the leaving air temp of setting, the air-out humidity Hs=50% of setting, then:A=7.5, b= 237.3 thus calculating:
Assuming that Til=35 DEG C of the return air temperature detected, the return air humidity Hil=32% detected, then:
Thus return air humidity set point Hi can be calculated:
Finally by comparing the return air humidity value Hil detected by air-conditioning return air humidity sensor 7 and return air humidity set The size of value Hi calculates humidification demand and dehumidification, and air-conditioner set runs corresponding mould according to the size of two above demand Formula converts control air-out humidity to return air humid control, indirect control air-out humidity.
Wherein, specific control logic is:
(1) control logic is humidified:
I. as system humidification demand < 0%, system exits humidifying mode, closes humidifier 11;
Ii. as 0%≤system humidification demand < 100%, system maintains current state;
Iii. when system humidifies demand >=100%, system enters humidifying mode, opens humidifier 11.
(2) Dehumidification controlling logic:
I. as system dehumidification demand < 0%, system exits dehumidifying;
Ii. as 0%≤system dehumidification demand < 100%, unit maintains current operating conditions;
Iii. when system dehumidification demand >=100%, system enters dehumidification mode, and the operation of 9 rated speed of indoor fan is opened Open compressor 1.
The carrying out practically mode of each parts of air-conditioning system is:
A, refrigeration mode:
When system operation refrigeration mode, indoor fan 9 is run by rated speed, and by-passing valve 15 is closed, and is throttled by level-one Valve 13 carries out throttling decrease temperature and pressure, and two-step throttle valve 14 is opened completely, does not play throttling action, and compressor 1 is opened and run, and is carried out Refrigeration cycle;
B, dehumidification mode:
When system operation dehumidification mode, indoor fan 9 is run by rated speed, and by-passing valve 15 is opened, level-one throttle valve 13 completely close, and do not play throttling action, and two-step throttle valve 14 carries out throttling decrease temperature and pressure, and compressor 1 opens operation, carrys out autocondensation The high temperature and pressure liquid refrigerant of device 2 flows into level-one evaporator 8, then flows into secondary evaporimeter 12, and indoor return air passes through dual evaporation It by cool-down dehumidification when device 12, then is heated by level-one evaporator 8, carries out thermal compensation;
C, humidifying mode:
When system operation humidifying mode, indoor fan 9 is run by rated speed, and humidifier 11 is opened, and is humidified.
Assuming that:Humidification/dehumidifying humidity return difference value H β=2% humidifies humid control precision Ha=3%, and dehumidify humid control Precision Hd=3% can then be calculated:Hi=10 (β-α+2)=24.98%.
Due to dehumidification>100%, at this time system enter dehumidification mode, each parts are operated according to dehumidification mode.
A kind of control method of the air-conditioning system of the control air-out humidity of the present embodiment,
(1) double effect evaporator is used, when dehumidification mode, first evaporator 8 is used when the subcooler of condenser 2, to coming Thermal compensation is carried out from the Cryogenic air after the dehumidifying of second level evaporator 12, the heat exhaust of compressor 1 is taken full advantage of, saves The power consumption of conventional electric heater.
(2) rotation speed of fan is next energy saving in order to control for traditional control mode, this system adds two throttle valves and a side Port valve 15 (because throttle valve is opened completely still restriction effect) realizes system by automatically adjusting cold medium flux combination evaporator It is cold and dehumidifying etc. operating modes it is energy saving.
(3) control method of the air-conditioning system of a kind of control air-out humidity of the invention, by accurately calculating return air humidity To the air-conditioning system and its control method of stability contorting air-out humidity, by Temperature and Humidity Control in smaller fluctuation range.Knot Close different humidification demands, dehumidification Rule of judgment, can more accurately judge the timing input of compressor 1, humidifier 11, So that humidification capability, dehumidifying effect and practical humidity load are consistent, the deficiency of existing air-out humidity control technology is solved.
(4) control method of the air-conditioning system of a kind of control air-out humidity of the invention, may make indoor fan 9 not need Rotating speed operation is dropped, and air supplying distance and wind pushing temperature are unaffected, may make the control to indoor temperature and humidity more stable, system operation Safety and reliability.
Finally it should be noted that above example is only to illustrate the technical solution of the utility model, rather than to this reality With the limitation of novel protected range, although being explained in detail to the utility model with reference to preferred embodiment, this field it is general Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this The spirit and scope of utility model technical solution.

Claims (4)

1. a kind of air-conditioning system of control air-out humidity, it is characterised in that:Including compressor cooling and dehumidification system, humidification system System, controller, outdoor fan, outdoor environment temperature sensor, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, Indoor fan and air conditioning exhausting temperature sensor, the compressor cooling and dehumidification system include sequentially connected compressor, cold Condenser, level-one throttle valve, level-one evaporator, two-step throttle valve and secondary evaporimeter, the compressor cooling and dehumidification system are also Including by-passing valve, by-passing valve and level-one flow controller are in parallel, and the humidification system includes humidifier, the compressor, outdoor fan, Outdoor environment temperature sensor, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, indoor fan, air conditioning exhausting temperature Degree sensor, humidifier, level-one throttle valve, two-step throttle valve, by-passing valve are electrically connected with the controller, and are controlled by it respectively.
2. a kind of air-conditioning system of control air-out humidity as described in claim 1, it is characterised in that:Air-conditioning return air temperature sensing Device, air-conditioning return air humidity sensor are mounted on the inlet side of secondary evaporimeter.
3. a kind of air-conditioning system of control air-out humidity as described in claim 1, it is characterised in that:Air conditioning exhausting temperature sensing Device is mounted on the air side of level-one evaporator.
4. a kind of air-conditioning system of control air-out humidity as described in claim 1, it is characterised in that:Level-one evaporator is mounted on The air side of secondary evaporimeter.
CN201820117181.XU 2018-01-23 2018-01-23 A kind of air-conditioning system of control air-out humidity Active CN207797334U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017563A (en) * 2019-03-28 2019-07-16 青岛海尔空调电子有限公司 Dehumidification control method for double-cold source fresh air handling unit
CN110631232A (en) * 2019-10-12 2019-12-31 广州市华德工业有限公司 Control method of cooling unit and storage medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017563A (en) * 2019-03-28 2019-07-16 青岛海尔空调电子有限公司 Dehumidification control method for double-cold source fresh air handling unit
CN110631232A (en) * 2019-10-12 2019-12-31 广州市华德工业有限公司 Control method of cooling unit and storage medium
CN110631232B (en) * 2019-10-12 2021-01-08 广州市华德工业有限公司 Control method of cooling unit and storage medium

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