CN104566835B - Control method and system for preventing condensation of chilled water type air conditioner - Google Patents
Control method and system for preventing condensation of chilled water type air conditioner Download PDFInfo
- Publication number
- CN104566835B CN104566835B CN201510041483.4A CN201510041483A CN104566835B CN 104566835 B CN104566835 B CN 104566835B CN 201510041483 A CN201510041483 A CN 201510041483A CN 104566835 B CN104566835 B CN 104566835B
- Authority
- CN
- China
- Prior art keywords
- water
- heat transfer
- air
- conditioning
- water side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 366
- 238000009833 condensation Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000005494 condensation Effects 0.000 title abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000012546 transfer Methods 0.000 claims description 130
- 238000004378 air conditioning Methods 0.000 claims description 111
- 238000001816 cooling Methods 0.000 claims description 76
- 230000009885 systemic effect Effects 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000007710 freezing Methods 0.000 description 45
- 230000008014 freezing Effects 0.000 description 45
- 239000000047 product Substances 0.000 description 28
- 238000005057 refrigeration Methods 0.000 description 22
- 230000009182 swimming Effects 0.000 description 18
- 238000009413 insulation Methods 0.000 description 10
- 238000007791 dehumidification Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000012356 Product development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
- F24F11/84—Control 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method and a system for preventing condensation of a chilled water type air conditioner. The method comprises the following steps: the return air temperature and humidity detection device detects the ambient temperature and the ambient humidity, the controller judges whether the ambient temperature is greater than the pre-stored preset temperature or not, and judges whether the ambient humidity is greater than the pre-stored preset humidity or not, under the condition that the ambient temperature is greater than the pre-stored temperature and the ambient humidity is greater than the pre-stored humidity, whether the water side heat exchange quantity of the air conditioner is greater than the pre-stored preset refrigerating quantity or not is judged, under the condition that the water side heat exchange quantity is greater than the pre-stored refrigerating quantity, the water flow control valve reduces the opening value of the water flow control valve to enable the water side heat exchange quantity to be less than or equal to the pre-stored refrigerating quantity, wherein the water side heat exchange quantity is used for determining the heat absorbed. The invention solves the problem that the control method for preventing condensation of the air conditioner in the prior art is not suitable for the special air conditioner of the chilled water type machine room.
Description
Technical field
It is anti-condensation in particular to one kind freezing water-type air conditioner the present invention relates to the anti-condensation control field of air conditioner
Control method and system.
Background technology
At present, the condensation prevention control method of product is concentrated mainly in household products, primarily to preventing in high humility
Dehumidifying causes outlet air band water or wind deflector to drip under environment；Outlet air band water is prevented, mainly by improving air quantity, reducing and freeze
Export to improve leaving air temp, the means such as insulation (flocking) of the easy condensation position of increase are realized.
In the related art, a kind of method is mainly for household products, and detection wind deflector angle is in dehumidifying is run
It is no to be in minimum air quantity position, if being in the position, and reach the regular hour, then the position for increasing air quantity swings wind deflector one
The section time, by improving air quantity, increases leaving air temp, reduces condensation probability.There is a method in which and for household products,
Air outlet on fuselage and the outlet frame being centered around around air outlet, are provided with inner side edge of the outlet frame towards air outlet
Electrical heating patch, by judging whether air-conditioner set is in refrigeration mode or dehumidification mode, and whether evaporating temperature is beyond fair
Perhaps value range, if then opening electrical heating patch, prevents condensation around air outlet.Multichannel electric heating film or electricity can also be employed
Silk is hindered, while is configured with humidity sensor, the more accurate switching requirements for detecting electrothermal module, realize the dynamic tune of heating amount
Section.Another method is mainly for special air-conditioning units (for example, air conditioner in machine room), because the panel of special air-conditioning units is mostly metalwork,
When freezing under high humidity environment, if metal decking heat insulation effect is bad, easily there are condensation hidden danger, the more uses in industry inside are thicker
Heat-preservation cotton prevent condensation, this method is guided on the inside of panel by the way that evaporator section is exported refrigerant by pipeline, returned
In compressor；Because evaporator outlet refrigerant easily overheats, and temperature is higher than evaporating temperature and wind pushing temperature, is existed by the refrigerant of inner side
During with metal decking interior side contacts, similar temperature spot rather than wind pushing temperature point are reached, can prevent condensation.In addition also
There is a kind of method to can be adapted for all types of compression refrigerating systems, it is characterized in that an electricity of connecting at compressor suction and discharge end
Magnet valve and capillary, when detect have condensation hidden danger under dehumidified state when, open solenoid valve, bypass part of refrigerant, become
Mutually realize the unloading of refrigerating capacity, reach and improve leaving air temp to prevent the generation of dew condensation phenomenon.Focus mostly in above-mentioned technology
In Domestic separating product or compression refrigeration air-conditioning unit, its system unit and control method are not suitable for freezing ability of swimming computer room special
With in air-conditioning or the product of similar chilled water end.
It is not suitable for freezing asking for ability of swimming special air conditioning for device room for the anti-condensation control method of air-conditioning of the prior art
Topic, not yet proposes effective solution at present.
The content of the invention
It is a primary object of the present invention to provide a kind of freezing water-type air conditioner anti-condensation control method and system, to solve
Not the problem of anti-condensation control method of air-conditioning of the prior art is not applied to freezing ability of swimming special air conditioning for device room.
To achieve these goals, one side according to embodiments of the present invention, there is provided one kind freezing water-type air conditioner is prevented
The control method of condensation.The anti-condensation control method of freezing water-type air conditioner includes according to the present invention：Air return humiture detection dress
Detection environment temperature and ambient humidity are put, controller judges whether environment temperature is more than the preset temperature prestored, and judges
Whether ambient humidity is more than the default humidity prestored, is more than preset temperature in environment temperature and ambient humidity is wet more than default
In the case of degree, judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored, be more than in heat transfer in water side
In the case of preset cooling capacity, the opening value that Water flow control valve door reduces Water flow adjusting valve make it that heat transfer in water side is less than
In preset cooling capacity, wherein, heat transfer in water side is for determining the chilled water of air-conditioning in unit interval systemic heat.
To achieve these goals, another aspect according to embodiments of the present invention, there is provided one kind freezing water-type air conditioner is prevented
The control system of condensation.The anti-condensation control system of freezing water-type air conditioner includes according to the present invention：Air return humiture detection dress
Put, for detecting environment temperature and ambient humidity, controller, for judging whether environment temperature is more than the default temperature prestored
Degree, judges whether ambient humidity is more than the default humidity prestored, is more than preset temperature in environment temperature and ambient humidity is big
In the case of default humidity, judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored, water flow control
Valve processed, in the case of being more than preset cooling capacity in heat transfer in water side, the opening value for reducing Water flow adjusting valve causes water
Side heat exchange amount is less than or equal to preset cooling capacity, wherein, heat transfer in water side is for determining the chilled water of air-conditioning within the unit interval
The heat of absorption.
According to embodiments of the present invention, the control method anti-condensation by freezing water-type air conditioner, solves of the prior art
The problem of anti-condensation control method of air-conditioning is not suitable for freezing ability of swimming special air conditioning for device room, it is anti-condensation to have reached freezing water-type air conditioner
The purpose of dew.
Brief description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow diagram of the anti-condensation control method of freezing water-type air conditioner according to embodiments of the present invention；
Fig. 2 is the structure diagram of the anti-condensation control system of freezing water-type air conditioner according to embodiments of the present invention.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
Embodiment 1
According to embodiments of the present invention, there is provided a kind of embodiment of the method for freezing the anti-condensation control method of water-type air conditioner.
The embodiment of the present invention additionally provides a kind of anti-condensation control method of freezing water-type air conditioner.This method can be by cold
Freeze the anti-condensation control system of water-type air conditioner to realize, but not limited to this.
The anti-condensation control method flow diagram of freezing water-type air conditioner that it is embodiment according to the present invention that Fig. 1, which is,.Such as Fig. 1
Shown, it is as follows that the method comprising the steps of：
Step S101, air return humiture detection device detection environment temperature and ambient humidity；
In above-mentioned steps S101, first, air return humiture is detected by air return humiture detection device to obtain environment
Temperature and ambient humidity, after environment temperature and ambient humidity is got, air-conditioning by controlling value more input by user come
Select the operational mode of air-conditioning.It is assumed here that environment temperature is 28.5 DEG C, relative humidity is 90%, passes through the environment temperature got
Degree and ambient humidity are contrasted with control setting humiture, and air-conditioning selection enters dehumidification operating mode.
Step S103, controller judge whether environment temperature is more than the preset temperature prestored, and judge ambient humidity
Whether the default humidity prestored is more than；
In above-mentioned steps S103, judge the magnitude relationship between environment temperature and preset temperature and ambient humidity and preset
Magnitude relationship between humidity, for example, passing through step S101, it is assumed that the operational mode of air-conditioning selection is run for dehumidifying, to realize
Rapid moisture removal, then for the air-supply wind speed for needing to reduce chilled water air conditioner in machine room to preset value, preset value is generally preferred to product highest
The 50%~70% of shelves wind speed, judges whether dehumidifying run time reaches certain time, it is generally preferable in 0.5h~6h, to judge
After dehumidifying operation after a while, whether relative humidity has reduction, wherein, above-mentioned preset value is mainly according to the insulation of sponge
Situation determines that temperature is generally preferred to 28 DEG C or more than 28 DEG C, and relative humidity is generally preferred to 75%~100% with actual measurement,
If relative humidity does not reduce at this time, or can not be less than preset value, freezing ability of swimming air conditioner in machine room will be held under hot and humid operating mode
Continuous refrigerating operaton, there will be condensation hidden danger, it is necessary to limit refrigeration output；Determine that air-conditioning whether there is by the judgement in this step
Condensation risk.
Step S105, in the case where environment temperature is more than preset temperature and ambient humidity is more than default humidity, judges sky
Whether the heat transfer in water side of tune is more than the preset cooling capacity prestored；
In above-mentioned steps S105, obtained by the judgement of step S103, environment temperature is more than preset temperature and environment
In the case that humidity is more than default humidity, then judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored,
For example, when detecting that air return humiture can not reduce, or reducing seldom, at this time under dehumidification operating mode after a certain period of time
Need to recover fan operation to highest wind shelves, do not allow for reducing wind speed operation, wherein, humiture can not reduce and be likely to be room
Interior humiture load is excessive, or indoor and outdoor hot and humid area causes, and in this case, judges the heat transfer in water side of air-conditioning with presetting
Relation between refrigerating capacity, wherein, unlike the product using refrigerant direct vapor compression refrigeration, freeze ability of swimming air conditioner in machine room
In hot and humid refrigeration, due to the heat transfer characteristic of water, the refrigerating capacity of air-conditioning products can be very big, with indoor operating condition 30
DEG C/29 DEG C exemplified by, the freezing ability of swimming air conditioner in machine room of nominal 40kW passes through 6.85m under this operating mode3/ h (metered flow), 7 DEG C
Chilled water, heat transfer in water side is measured under nominal air delivery and is up to 90kW, air-supply dry-bulb temperature is less than 21 DEG C, the air blow and return dry bulb temperature difference
For 9 DEG C, and the air-cooled direct vapor compression air conditioner in machine room of same nominal 40kW, 30 DEG C indoors/29 DEG C, it is 30 DEG C outdoor at test
Wind side heat exchange amount is no more than 50kW, and air-supply dry-bulb temperature is higher than 26 DEG C, and the air blow and return dry bulb temperature difference is 4 DEG C.Contrast knot more than
Fruit understands, if freezing ability of swimming air conditioner in machine room freezes in the case of hot and humid, only prevents block surfaces condensation by the way that sponge is heat-insulated,
Required sponge is very thick, by taking PE sponges as an example, it may be necessary to more than more than 30mm specifications.The sponge of such thickness is for whole
Machine structure design and apparent size are all very unfavorable, it is therefore necessary to refrigeration of the freezing ability of swimming product under hot and humid operating mode
Amount carries out a certain amount of limitation, lifts restrictions under conventional humiture operating mode, then by the insulation sponge within 10mm carry out every
Heat treatment, product condensation problem when can prevent from freezing under all kinds of operating modes.
Step S107, in the case where heat transfer in water side is more than preset cooling capacity, Water flow control valve door reduces water flow
The opening value of regulating valve causes heat transfer in water side to be less than or equal to preset cooling capacity, wherein, heat transfer in water side is to be used to determine air-conditioning
Chilled water in unit interval systemic heat.
In above-mentioned steps S107, by the judgement of step S105, the feelings that heat transfer in water side is more than preset cooling capacity are obtained
Under condition, the opening value heat transfer in water side that Water flow adjusting valve is reduced by Water flow control valve door is less than preset cooling capacity,
The heat transfer in water side of air-conditioning can so be changed, so that heat transfer in water side is less than preset cooling capacity, refrigerating capacity here is specific
Predetermined coefficient is multiplied by for refrigerating capacity under nominal condition, predetermined coefficient is generally preferred between 1.0~1.5, wherein, nominal condition refers to
Be air conditioner in machine room national standard GB/T19413-2010 name cooling conditions, indoor 24/17 DEG C, intake 7 DEG C, tested at 12 DEG C of water outlet
Refrigerating capacity；Predetermined coefficient, is exactly a multiple in simple terms because to control it is hot and humid under refrigerating capacity, such as in temperature
Spend for 28 DEG C, humidity be more than 75% freeze when, actual refrigerating capacity may already exceed 1.5 times of nominal capacity, this is that do not have
It is being necessary, it is necessary to appropriate reduction, it is 1.2 or so to be measured by experiment, so can both cool down, be also possible to prevent condensation.
The above method detects environment temperature by air return humiture detection device and ambient humidity, controller judge environment temperature
Whether degree is more than the preset temperature prestored, and judges whether ambient humidity is more than the default humidity prestored, in environment
Temperature is more than in the case that preset temperature and ambient humidity be more than default humidity, judge air-conditioning heat transfer in water side whether be more than it is pre-
The preset cooling capacity first stored, in the case where heat transfer in water side is more than preset cooling capacity, Water flow control valve door reduces current
The opening value of adjustable valve causes heat transfer in water side to be less than preset cooling capacity, wherein, heat transfer in water side is for determining air-conditioning
Chilled water is in unit interval systemic heat；Solve the anti-condensation control method of air-conditioning of the prior art be not suitable for it is cold
The problem of freezing ability of swimming special air conditioning for device room, has achieveed the purpose that freezing water-type air conditioner is anti-condensation.
A kind of preferred embodiment, before step S105, this method can also include：
Step S104, Inlet and outlet water temperature-detecting device detect temperature difference of the chilled water of air-conditioning within the unit interval, current
The chilled water of amount detecting device detection air-conditioning water flow, controller within the unit interval pass through tune according to temperature difference and water flow
Heat transfer in water side of the chilled water of air-conditioning within the unit interval is obtained with heat transfer in water side algorithm, wherein, heat transfer in water side algorithm
For calculating the chilled water of air-conditioning in unit interval systemic heat.
In above-mentioned steps S104, the chilled water of air-conditioning is detected within the unit interval by Inlet and outlet water temperature-detecting device
Temperature difference, current amount detecting device detection air-conditioning chilled water within the unit interval water flow, obtaining temperature difference and water flow
Afterwards, heat transfer in water side is obtained by heat transfer in water side algorithm, specifically, air-conditioning is detected by Inlet and outlet water temperature-detecting device
Temperature difference of the chilled water within the unit interval represent that water flow M represents that the specific heat capacity of water is C, then water side is changed with △ T
The calculation formula of heat Q is：Q=C*M* △ T, the chilled water of air-conditioning can be calculated in unit by the formula of heat transfer in water side
Time systemic heat, in this way, could be by heat transfer in water side compared with preset cooling capacity.
A kind of preferred embodiment, in step s 107, this method can also include：
Step S1071, Water flow control valve door reduce the opening value of Water flow adjusting valve to the first preset value；
Step S1073, Inlet and outlet water temperature-detecting device detect temperature difference of the chilled water of air-conditioning within the unit interval, current
Water flow of the chilled water within the unit interval of amount detecting device detection air-conditioning, controller according to the temperature difference and water flow,
By calling heat transfer in water side algorithm to obtain heat transfer in water side of the chilled water of air-conditioning within the unit interval, wherein, the heat exchange of water side
The chilled water that quantity algorithm is used to calculate air-conditioning is in unit interval systemic heat；
Step S1075, controller judge whether heat transfer in water side of the chilled water of air-conditioning within the unit interval is less than or equal to
Preset cooling capacity；
Step S1077, in the case where heat transfer in water side is more than preset cooling capacity, Water flow control valve door reduces water flow
The opening value of regulating valve is to the second preset value, until heat transfer in water side is less than or equal to preset cooling capacity, wherein, the first preset value with
Second preset value is the value in the range of Water flow adjusting valve.
In above-mentioned steps S1071 into S1077, the Water flow adjusting valve is reduced above by Water flow control valve door
Opening value to the first preset value, wherein, the Water flow adjusting valve that we use at present is 0-10V controls, and minimum can control
0.1V, then opening value to the first preset value for reducing the Water flow adjusting valve are exactly to control magnitude of voltage to adjust to reduce water flow
The opening value of valve, when reducing control voltage, water valve can reduce, such as, we are with the reduction of each grade of 0.5V, it is assumed that flow tune
Section valve starts as 10V, then the first preset value can be 9.5V, at this time, the chilled water of Inlet and outlet water temperature-detecting device detection air-conditioning
Temperature difference △ T within the unit interval, current amount detecting device detect water flow M of the chilled water of air-conditioning within the unit interval,
According to the temperature difference and water flow, the calculation formula by heat transfer in water side Q is controller：Q=C*M* △ T obtain air-conditioning
Heat transfer in water side of the chilled water within the unit interval, heat transfer in water side can reduce, and often turn down level-one Water flow adjusting valve, are then spaced
A period of time recalculates a heat transfer in water side.Preset cooling capacity is reduced to until being reduced to heat transfer in water side；Pass through every drop
The opening value of low Water flow adjusting valve successively just calculates a heat transfer in water side, and compares heat transfer in water side and preset cooling capacity
Magnitude relationship, in this way, step by step reduce water flow regulating valve opening value until heat transfer in water side be less than or equal to preset cooling capacity,
Limitation refrigeration output is thus haveed the function that.
A kind of preferred embodiment, after step S107, the above method can also include：
Step S1081, in the case where heat transfer in water side is less than or equal to preset cooling capacity, controller record water flow is opened
Angle value is aperture limits value；
Step S1083, the opening value of controller control flow control valve are no more than aperture limits value.
In above-mentioned steps S1081 into step S1083, by being recorded in heat transfer in water side less than or equal to preset cooling capacity
In the case of the opening value of water flow be aperture limits value, it is right less than or equal under preset cooling capacity that heat transfer in water side can be got
The magnitude of voltage that Water flow adjusting valve is controlled is answered, after this magnitude of voltage is obtained, air-conditioning can control Water flow adjusting valve not
More than this magnitude of voltage, in this way, the anti-condensation effect of freezing type air-conditioning can be played, in addition, air-conditioning can also be passed through by product
The partition plate of overprotection pretreatment prevents the generation of surface condensation problem, wherein, partition plate refers to the thermal insulation separation in unit panel
Plate, pastes thick heat-preservation cotton after referring to sheet metal component, or uses the form that two sides is sheet metal component central filler thermal insulation material.
A kind of preferred embodiment, after step S1083, this method can include：
Step S1085, controller judge whether environment temperature is less than preset temperature, and it is pre- to judge whether ambient humidity is less than
If humidity；
In the case that step S1087, is less than preset temperature in environment temperature, and ambient humidity is less than default humidity, control
Device releases the control for being no more than aperture limits value to the opening value of flow control valve；
In above-mentioned steps S1085 into S1087, after having haveed the function that limitation refrigeration output by step S1083, after
It is continuous to judge whether environment temperature is less than preset temperature, and judge whether ambient humidity is less than default humidity, it is less than in environment temperature
Preset temperature, and in the case that ambient humidity is less than default humidity, illustrates that environment temperature at this time and ambient humidity have reached
Anti-condensation purpose, so controller can release the control for being no more than aperture limits value to the opening value of flow control valve,
Rejudge operational mode.
The present invention is more easy to condensation in the operation that dehumidify under low wind speed condition, hot and humid operating mode of chilled water end prod, need
Improve to high wind speed and run, avoid leaving air temp too low, chilled water end prod dehumidify operation under hot and humid operating mode, if surpassing
Go out a period of time, then there are condensation risk, need to judge whether humiture operating mode at this time is preset beyond product in order to anti-condensation
The operation humiture upper limit, if exceeding, need limitation refrigeration output, limitation refrigeration output mainly passes through contrast operation refrigerating capacity
With the multiple value of nominal capacity；Drawn in the present invention by Water flow adjusting valve and Inlet and outlet water temperature computation；Likewise,
Test data when can pass through product development under each operating mode is contrasted, and comparing result is closed with humiture operating mode
Connection, so that default settings are carried out, when chilled water end prod humiture operating mode less than product in order to anti-condensation default warm and humid
When spending the upper limit, then the limitation of wind turbine and flow control valve can be released；At this time since refrigerating capacity reduces, the air blow and return temperature difference also corresponds to
Reduce, product condensation risk reduces, and can prevent surface condensation problem by the partition plate that product is pre-processed through overprotection
Produce.The present invention, which can solve chilled water air conditioner in machine room or similar chilled water end prod, to be prevented from freezing under hot and humid operating mode
When block surfaces, air outlet and electric-controlled box in locally there is condensation water, avoid blast carrying water drops or trigger air-conditioning products electricity
Gas security risk, and meet normal refrigeration or dehumidification at the same time, dropped by controlling flow and the air-supply wind speed of chilled water
In the low air blow and return temperature difference to rational scope, while ensure that wind pushing temperature can meet the refrigeration demand under corresponding operating mode, reasonable
The air blow and return temperature difference in by conventional provision for thermal insulation (such as：Sponge etc.) prevent block surfaces, air outlet, inside electric-controlled box
Condensate phenomenon.
The method of the above embodiments of the present application 1, there is provided a kind of to freeze the anti-condensation control method of water-type air conditioner, return air temperature
Humidity detector detects environment temperature and ambient humidity, and controller judges whether environment temperature is more than the default temperature prestored
Degree, and judge whether ambient humidity is more than the default humidity prestored, it is more than preset temperature and ambient humidity in environment temperature
In the case of more than default humidity, judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored, in water side
In the case that heat exchange amount is more than preset cooling capacity, the opening value that Water flow control valve door reduces Water flow adjusting valve causes water side to change
Heat is less than or equal to preset cooling capacity, wherein, heat transfer in water side is for determining that the chilled water of air-conditioning absorbs within the unit interval
Heat；The anti-condensation control method of freezing water-type air conditioner provided by the present invention is by obtaining environment temperature and environmental wet
Degree, judges relation, ambient humidity and the relation of default humidity of environment temperature and preset temperature, is more than default temperature in environment temperature
In the case that degree and ambient humidity are more than default humidity, the relation of heat transfer in water side and refrigerating capacity is judged, and exchange heat in water side
In the case that amount is more than preset cooling capacity, regulating water flow regulating valve is until heat transfer in water side is less than or equal to preset cooling capacity；Into
And solve the problems, such as that the anti-condensation control method of air-conditioning of the prior art is not suitable for freezing ability of swimming special air conditioning for device room, with
The prior art is compared, and has achieveed the purpose that freezing water-type air conditioner is anti-condensation.
Embodiment 2
Fig. 2 is the structure diagram of the anti-condensation control system of freezing water-type air conditioner according to embodiments of the present invention.For
The purpose of description, the architecture painted is only an example of proper environment, not to the use scope or function of the application
It is proposed any limitation.Also it is to any component or group shown in Fig. 2 that should not will freeze the anti-condensation control system of water-type air conditioner
Conjunction has any dependence or demand.
As shown in Figure 1, the anti-condensation control system of the freezing water-type air conditioner can include：Air return humiture detection device
21st, controller 23 and Water flow control valve door 25.
Wherein, air return humiture detection device 21, for detecting environment temperature and ambient humidity；
In above-mentioned air return humiture detection device 21, first, it is warm and humid that return air is detected by air return humiture detection device
Degree is to obtain environment temperature and ambient humidity, and after environment temperature and ambient humidity is got, air-conditioning is defeated by comparing user
The controlling value entered selects the operational mode of air-conditioning.It is assumed here that environment temperature is 28.5 DEG C, relative humidity is 90%, by obtaining
The environment temperature and ambient humidity got are contrasted with control setting humiture, and air-conditioning selection enters dehumidification operating mode.
Whether controller 23, for judging whether environment temperature is more than the preset temperature prestored, judge ambient humidity
More than the default humidity prestored, in the case where environment temperature is more than preset temperature and ambient humidity is more than default humidity,
Judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored；
In controller noted above 23, judge the magnitude relationship between environment temperature and preset temperature and ambient humidity and preset
Magnitude relationship between humidity, for example, passing through controller 23, it is assumed that the operational mode of air-conditioning selection is run for dehumidifying, to realize
Rapid moisture removal, then for the air-supply wind speed for needing to reduce chilled water air conditioner in machine room to preset value, preset value is generally preferred to product highest
The 50%~70% of shelves wind speed, judges whether dehumidifying run time reaches certain time, it is generally preferable in 0.5h~6h, to judge
After dehumidifying operation after a while, whether relative humidity has reduction, wherein, above-mentioned preset value is mainly according to the insulation of sponge
Situation determines that temperature is generally preferred to 28 DEG C or more than 28 DEG C, and relative humidity is generally preferred to 75%~100% with actual measurement,
If relative humidity does not reduce at this time, or can not be less than preset value, freezing ability of swimming air conditioner in machine room will be held under hot and humid operating mode
Continuous refrigerating operaton, there will be condensation hidden danger, it is necessary to limit refrigeration output；Determine whether air-conditioning is deposited by the judgement in controller 23
In condensation risk.
In the case where environment temperature is more than preset temperature and ambient humidity is more than default humidity, the water of air-conditioning is being judged
Whether side heat exchange amount is more than the preset cooling capacity that prestores, for example, when detecting under dehumidification operating mode after a certain period of time
Air return humiture can not reduce, or when reducing seldom, need to recover fan operation at this time to highest wind shelves, do not allow for reducing wind
Speed operation, wherein, humiture can not reduce that to be likely to be indoor temperature and humidity load excessive, or indoor and outdoor hot and humid area causes,
In this case, the relation between the heat transfer in water side of air-conditioning and preset cooling capacity is judged, wherein, with directly being compressed using refrigerant
Unlike the product of formula refrigeration, freezing ability of swimming air conditioner in machine room is in hot and humid refrigeration, due to the heat transfer characteristic of water, air-conditioning production
The refrigerating capacity of product can be very big, and by taking indoor 30 DEG C/29 DEG C of operating condition as an example, the freezing ability of swimming air conditioner in machine room of nominal 40kW exists
Pass through 6.85m under this operating mode3/ h (metered flow), 7 DEG C of chilled water, under nominal air delivery measuring heat transfer in water side is up to
90kW, air-supply dry-bulb temperature are less than 21 DEG C, and the air blow and return dry bulb temperature difference is 9 DEG C, and the air-cooled direct vapor compression of same nominal 40kW
Air conditioner in machine room, 30 DEG C indoors/29 DEG C, it is 30 DEG C outdoor at the wind side heat exchange amount tested be no more than 50kW, air-supply dry-bulb temperature height
In 26 DEG C, the air blow and return dry bulb temperature difference is 4 DEG C.It was found from comparing result more than, if freezing ability of swimming air conditioner in machine room is hot and humid
In the case of freeze, only prevent block surfaces condensation by the way that sponge is heat-insulated, required sponge is very thick, can by taking PE sponges as an example
It can need more than more than 30mm specifications.The sponge of such thickness is designed for complete machine structure and apparent size is all very unfavorable, because
This is necessary to carry out a certain amount of limitation to refrigerating capacity of the freezing ability of swimming product under hot and humid operating mode, in conventional humiture work
Lift restrictions under condition, then be thermally insulated by the insulation sponge within 10mm, when can prevent from freezing under all kinds of operating modes
Product condensation problem.
Water flow control valve door 25, in the case of being more than preset cooling capacity in heat transfer in water side, reduces water flow tune
The opening value of section valve causes heat transfer in water side to be less than or equal to preset cooling capacity, wherein, heat transfer in water side is for determining air-conditioning
Chilled water is in unit interval systemic heat.
In above-mentioned Water flow control valve door 25, by the judgement of controller 23, obtain heat transfer in water side and be more than to be equipped with advance
In the case of cold, the opening value heat transfer in water side of Water flow adjusting valve is reduced less than default by Water flow control valve door
Refrigerating capacity, can so change the heat transfer in water side of air-conditioning, so that heat transfer in water side is less than preset cooling capacity, refrigeration here
Measurer body is that refrigerating capacity is multiplied by predetermined coefficient under nominal condition, and predetermined coefficient is generally preferred between 1.0~1.5, wherein, name
Operating mode refers to air conditioner in machine room national standard GB/T19413-2010 name cooling conditions, 24/17 DEG C indoor, intakes 7 DEG C, 12 DEG C of water outlet
The refrigerating capacity of lower test；Predetermined coefficient, is exactly a multiple in simple terms because to control it is hot and humid under refrigerating capacity, than
Such as temperature be 28 DEG C, humidity be more than 75% freeze when, actual refrigerating capacity may already exceed 1.5 times of nominal capacity,
This is not necessarily to, it is necessary to which appropriate reduction, it is 1.2 or so to be measured by experiment, so can both cool down, be also possible to prevent to coagulate
Dew.
Said system detects environment temperature by air return humiture detection device and ambient humidity, controller judge environment temperature
Whether degree is more than the preset temperature prestored, and judges whether ambient humidity is more than the default humidity prestored, in environment
Temperature is more than in the case that preset temperature and ambient humidity be more than default humidity, judge air-conditioning heat transfer in water side whether be more than it is pre-
The preset cooling capacity first stored, in the case where heat transfer in water side is more than preset cooling capacity, Water flow control valve door reduces current
The opening value of adjustable valve causes heat transfer in water side to be less than preset cooling capacity, wherein, heat transfer in water side is for determining air-conditioning
Chilled water is in unit interval systemic heat；Solve the anti-condensation control method of air-conditioning of the prior art be not suitable for it is cold
The problem of freezing ability of swimming special air conditioning for device room, has achieveed the purpose that freezing water-type air conditioner is anti-condensation.
In a kind of preferred embodiment, which can also include：Inlet and outlet water temperature-detecting device and current amount detection device
Put.
Wherein, Inlet and outlet water temperature-detecting device, for detecting temperature difference of the chilled water of the air-conditioning within the unit interval,
Current amount detecting device, for detecting water flow of the chilled water of the air-conditioning within the unit interval, controller is additionally operable to：According to
Temperature difference and water flow, are exchanged heat by calling heat transfer in water side algorithm to obtain water side of the chilled water of air-conditioning within the unit interval
Amount, wherein, the chilled water that heat transfer in water side algorithm is used to calculate air-conditioning is in unit interval systemic heat.
In said system, temperature of the chilled water of air-conditioning within the unit interval is detected by Inlet and outlet water temperature-detecting device
Difference, current amount detecting device detection air-conditioning chilled water within the unit interval water flow, after temperature difference and water flow is obtained,
Heat transfer in water side is obtained by heat transfer in water side algorithm, specifically, the cold of air-conditioning is detected by Inlet and outlet water temperature-detecting device
Freeze temperature difference of the water within the unit interval to be represented with △ T, water flow M represents that the specific heat capacity of water is C, then heat transfer in water side Q
Calculation formula be：Q=C*M* △ T, the chilled water of air-conditioning can be calculated in the unit interval by the formula of heat transfer in water side
Systemic heat, in this way, could be by heat transfer in water side compared with preset cooling capacity.
In a kind of preferred embodiment, which can also include：Water flow control valve door, Inlet and outlet water temperature-detecting device
With current amount detecting device.
Wherein, Water flow control valve door, the opening value for reducing Water flow adjusting valve pass in and out water temperature to the first preset value
Detection device is spent, for detecting the chilled water of air-conditioning temperature difference, current amount detecting device, for detecting air-conditioning within the unit interval
Water flow of the chilled water within the unit interval；
The controller is additionally operable to：According to temperature difference and the water flow, by calling heat transfer in water side algorithm to obtain sky
Heat transfer in water side of the chilled water of tune within the unit interval, wherein, the chilled water that heat transfer in water side algorithm is used to calculate air-conditioning exists
Unit interval systemic heat；
Judge whether the heat transfer in water side of air-conditioning is less than or equal to preset cooling capacity, be more than preset cooling capacity in heat transfer in water side
In the case of, Water flow control valve door reduces the opening value of Water flow adjusting valve to the second preset value, until heat transfer in water side is small
In equal to preset cooling capacity, wherein, the first preset value and the second preset value are the value in the range of Water flow adjusting valve.
In said system, the opening value of the Water flow adjusting valve is reduced to first above by Water flow control valve door
Preset value, wherein, the Water flow adjusting valve that we use at present is 0-10V controls, and minimum can control 0.1V, then reduce institute
Opening value to the first preset value for stating Water flow adjusting valve is exactly the opening value for controlling magnitude of voltage to reduce Water flow adjusting valve, when
Reduce control voltage when, water valve can reduce, such as, we are with the reduction of each grade of 0.5V, it is assumed that flow control valve start for
10V, then the first preset value can be 9.5V, and at this time, the chilled water of Inlet and outlet water temperature-detecting device detection air-conditioning is in the unit interval
Interior temperature difference △ T, water flow M of the chilled water within the unit interval of current amount detecting device detection air-conditioning, controller according to
The temperature difference and water flow, the calculation formula by heat transfer in water side Q are：Q=C*M* △ T obtain the chilled water of air-conditioning in list
Heat transfer in water side in the time of position, heat transfer in water side can reduce, and often turn down level-one Water flow adjusting valve, then certain interval of time weight
Newly calculate a heat transfer in water side.Preset cooling capacity is reduced to until being reduced to heat transfer in water side；Pass through every reduction successively current
The opening value of adjustable valve just calculates a heat transfer in water side, and compares the magnitude relationship of heat transfer in water side and preset cooling capacity,
In this way, step by step reduce water flow regulating valve opening value until heat transfer in water side be less than or equal to preset cooling capacity, thus reach
The effect of limitation refrigeration output is arrived.
In a kind of preferred embodiment, controller is additionally operable to：Opening for Water flow adjusting valve is reduced in Water flow control valve door
Angle value causes heat transfer in water side to be less than or equal to after preset cooling capacity, is less than or equal to the situation of preset cooling capacity in heat transfer in water side
Under, the opening value for recording water flow is aperture limits value；
The opening value of control flow control valve is no more than aperture limits value.
In said system, by being recorded in heat transfer in water side less than or equal to the water flow in the case of preset cooling capacity
Opening value is aperture limits value, can get heat transfer in water side and be less than or equal to correspond to Water flow adjusting valve institute under preset cooling capacity
The magnitude of voltage of control, after this magnitude of voltage is obtained, air-conditioning can control Water flow adjusting valve to be no more than this magnitude of voltage, this
Sample, can play the anti-condensation effect of freezing type air-conditioning, in addition, the partition plate that air-conditioning can also be pre-processed by product through overprotection
To prevent the generation of surface condensation problem, wherein, partition plate refers to the thermal-insulation baffle plate in unit panel, pastes thickness after referring to sheet metal component
Thick heat-preservation cotton, or use the form that two sides is sheet metal component central filler thermal insulation material.
In a kind of preferred embodiment, controller noted above is additionally operable to：
After the opening value of controller control flow control valve is no more than aperture limits value, judge whether environment temperature is small
In preset temperature, judge whether ambient humidity is less than default humidity；
It is less than preset temperature in environment temperature, and in the case that ambient humidity is less than default humidity, releases to flow-rate adjustment
The opening value of valve is no more than the control of aperture limits value.
In controller noted above, after limitation refrigeration output has been haveed the function that, continue to judge whether environment temperature is small
In preset temperature, and judge whether ambient humidity is less than default humidity, be less than preset temperature in environment temperature, and ambient humidity is small
In the case of default humidity, illustrate that environment temperature at this time and ambient humidity have had reached anti-condensation purpose, so control
Device processed can release the control for being no more than aperture limits value to the opening value of flow control valve, rejudge operational mode.
The present invention is more easy to condensation in the operation that dehumidify under low wind speed condition, hot and humid operating mode of chilled water end prod, need
Improve to high wind speed and run, avoid leaving air temp too low, chilled water end prod dehumidify operation under hot and humid operating mode, if surpassing
Go out a period of time, then there are condensation risk, need to judge whether humiture operating mode at this time is preset beyond product in order to anti-condensation
The operation humiture upper limit, if exceeding, need limitation refrigeration output, limitation refrigeration output mainly passes through contrast operation refrigerating capacity
With the multiple value of nominal capacity；Drawn in the present invention by Water flow adjusting valve and Inlet and outlet water temperature computation；Likewise,
Test data when can pass through product development under each operating mode is contrasted, and comparing result is closed with humiture operating mode
Connection, so that default settings are carried out, when chilled water end prod humiture operating mode less than product in order to anti-condensation default warm and humid
When spending the upper limit, then the limitation of wind turbine and flow control valve can be released；At this time since refrigerating capacity reduces, the air blow and return temperature difference also corresponds to
Reduce, product condensation risk reduces, and can prevent surface condensation problem by the partition plate that product is pre-processed through overprotection
Produce.The present invention, which can solve chilled water air conditioner in machine room or similar chilled water end prod, to be prevented from freezing under hot and humid operating mode
When block surfaces, air outlet and electric-controlled box in locally there is condensation water, avoid blast carrying water drops or trigger air-conditioning products electricity
Gas security risk, and meet normal refrigeration or dehumidification at the same time, dropped by controlling flow and the air-supply wind speed of chilled water
In the low air blow and return temperature difference to rational scope, while ensure that wind pushing temperature can meet the refrigeration demand under corresponding operating mode, reasonable
The air blow and return temperature difference in by conventional provision for thermal insulation (such as：Sponge etc.) prevent block surfaces, air outlet, inside electric-controlled box
Condensate phenomenon.
The system of the above embodiments of the present application 2, there is provided a kind of to freeze the anti-condensation control system of water-type air conditioner, return air temperature
Humidity detector detects environment temperature and ambient humidity, and controller judges whether environment temperature is more than the default temperature prestored
Degree, and judge whether ambient humidity is more than the default humidity prestored, it is more than preset temperature and ambient humidity in environment temperature
In the case of more than default humidity, judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored, in water side
In the case that heat exchange amount is more than preset cooling capacity, the opening value that Water flow control valve door reduces Water flow adjusting valve causes water side to change
Heat is less than or equal to preset cooling capacity, wherein, heat transfer in water side is for determining that the chilled water of air-conditioning absorbs within the unit interval
Heat；The anti-condensation control system of freezing water-type air conditioner provided by the present invention is by obtaining environment temperature and environmental wet
Degree, judges relation, ambient humidity and the relation of default humidity of environment temperature and preset temperature, is more than default temperature in environment temperature
In the case that degree and ambient humidity are more than default humidity, the relation of heat transfer in water side and refrigerating capacity is judged, and exchange heat in water side
In the case that amount is more than preset cooling capacity, regulating water flow regulating valve is until heat transfer in water side is less than or equal to preset cooling capacity；Into
And solve the problems, such as that the anti-condensation control method of air-conditioning of the prior art is not suitable for freezing ability of swimming special air conditioning for device room, with
The prior art is compared, and has achieveed the purpose that freezing water-type air conditioner is anti-condensation.
It should be noted that for foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention and from the limitation of described sequence of movement because
According to the present invention, some steps can use other orders or be carried out at the same time.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module are not necessarily of the invention
It is necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of freeze the anti-condensation control method of water-type air conditioner, it is characterised in that including：
Air return humiture detection device detects environment temperature and ambient humidity；
Controller judges whether the environment temperature is more than the preset temperature prestored, and judges whether the ambient humidity is big
In the default humidity prestored；
In the case where the environment temperature is more than the preset temperature and the ambient humidity is more than the default humidity, judge
Whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored；
In the case where the heat transfer in water side is more than the preset cooling capacity, Water flow control valve door reduces Water flow adjusting valve
Opening value cause the heat transfer in water side to be less than or equal to the preset cooling capacity；
Wherein, the heat transfer in water side is for determining the chilled water of the air-conditioning in unit interval systemic heat；
Wherein, air return humiture detection device detection environment temperature and ambient humidity, including：The air return humiture detection device
Air return humiture is detected to obtain the environment temperature and the ambient humidity；
Wherein, in the case where the heat transfer in water side is more than the preset cooling capacity, Water flow control valve door reduces water flow
The opening value of regulating valve causes the heat transfer in water side to be less than or equal to the preset cooling capacity, including：Often turn down level-one water flow
Control valve, then certain interval of time recalculate a heat transfer in water side.
2. according to the method described in claim 1, it is characterized in that, prestored judging whether the heat transfer in water side is more than
Preset cooling capacity before, the method further includes：
Inlet and outlet water temperature-detecting device detects temperature difference of the chilled water of the air-conditioning within the unit interval, current amount detecting device
Detect the chilled water of the air-conditioning water flow within the unit interval, the controller according to the temperature difference and the water flow,
By calling heat transfer in water side algorithm to obtain heat transfer in water side of the chilled water of the air-conditioning within the unit interval；
Wherein, the chilled water that the heat transfer in water side algorithm is used to calculate the air-conditioning is in unit interval systemic heat.
3. according to the method described in claim 1, it is characterized in that, Water flow control valve door reduces the aperture of Water flow adjusting valve
Value is so that the heat transfer in water side further includes the step of being less than or equal to the preset cooling capacity：
The Water flow control valve door reduces the opening value of the Water flow adjusting valve to the first preset value；
Inlet and outlet water temperature-detecting device detects temperature difference of the chilled water of the air-conditioning within the unit interval, current amount detecting device
Water flow of the chilled water of the air-conditioning within the unit interval is detected, the controller is according to the temperature difference and the current
Amount, by calling heat transfer in water side algorithm to obtain heat transfer in water side of the chilled water of the air-conditioning within the unit interval, wherein, institute
Heat transfer in water side algorithm is stated for calculating the chilled water of the air-conditioning in unit interval systemic heat；
It is described pre- that the controller judges whether heat transfer in water side of the chilled water of the air-conditioning within the unit interval is less than or equal to
It is equipped with cold；
In the case where the heat transfer in water side is more than the preset cooling capacity, the Water flow control valve door reduces the current
The opening value of adjustable valve is to the second preset value, until the heat transfer in water side is less than or equal to the preset cooling capacity；
Wherein, first preset value and second preset value are the value in the range of the Water flow adjusting valve.
4. according to the method described in claim 1, it is characterized in that, reduce Water flow adjusting valve in the Water flow control valve door
Opening value cause the heat transfer in water side be less than or equal to the preset cooling capacity after, the method further includes：
In the case where the heat transfer in water side is less than or equal to the preset cooling capacity, the controller records the water flow
Opening value is aperture limits value；
The controller controls the opening value of the flow control valve to be no more than the aperture limits value.
5. according to the method described in claim 4, it is characterized in that, the controller controls the opening value of the flow control valve
After the aperture limits value, the method further includes：
The controller judges whether the environment temperature is less than the preset temperature, and judges whether the ambient humidity is less than
The default humidity；
It is less than the preset temperature in the environment temperature, and in the case that the ambient humidity is less than the default humidity, institute
State controller and release the control for being no more than the aperture limits value to the opening value of the flow control valve.
6. a kind of freeze the anti-condensation control system of water-type air conditioner, it is characterised in that including：
Air return humiture detection device, for detecting environment temperature and ambient humidity；
Controller, for judging whether the environment temperature is more than the preset temperature prestored, judges that the ambient humidity is
It is no more than the default humidity prestored, the environment temperature be more than the preset temperature and the ambient humidity be more than it is described
In the case of default humidity, judge whether the heat transfer in water side of air-conditioning is more than the preset cooling capacity prestored；
Water flow control valve door, in the case of being more than the preset cooling capacity in the heat transfer in water side, reduces water flow
The opening value of regulating valve causes the heat transfer in water side to be less than or equal to the preset cooling capacity；
Wherein, the heat transfer in water side is for determining the chilled water of the air-conditioning in unit interval systemic heat；
Wherein, the air return humiture detection device is used to detect air return humiture to obtain the environment temperature and the environment
Humidity；
Wherein, the Water flow control valve door is additionally operable to often turn down level-one Water flow control valve, then certain interval of time is counted again
Calculate a heat transfer in water side.
7. system according to claim 6, it is characterised in that the system also includes：
Inlet and outlet water temperature-detecting device, for detecting temperature difference of the chilled water of the air-conditioning within the unit interval；
Current amount detecting device, for detecting water flow of the chilled water of the air-conditioning within the unit interval；
The controller is additionally operable to：According to the temperature difference and the water flow, by calling heat transfer in water side algorithm to obtain institute
State heat transfer in water side of the chilled water of air-conditioning within the unit interval；
Wherein, the chilled water that the heat transfer in water side algorithm is used to calculate the air-conditioning is in unit interval systemic heat.
8. system according to claim 6, it is characterised in that the system also includes：
Water flow control valve door, for reducing the opening value of Water flow adjusting valve to the first preset value；
Inlet and outlet water temperature-detecting device, for detecting the chilled water of the air-conditioning temperature difference within the unit interval；
Current amount detecting device, for detecting water flow of the chilled water of the air-conditioning within the unit interval；
The controller is additionally operable to：According to the temperature difference and the water flow, by calling heat transfer in water side algorithm to obtain institute
Heat transfer in water side of the chilled water of air-conditioning within the unit interval is stated, wherein, the heat transfer in water side algorithm is used to calculate the sky
The chilled water of tune is in unit interval systemic heat；
Judge whether the heat transfer in water side of the air-conditioning is less than or equal to the preset cooling capacity, be more than institute in the heat transfer in water side
In the case of stating preset cooling capacity, the Water flow control valve door reduces the opening value of the Water flow adjusting valve to second default
Value, until the heat transfer in water side is less than or equal to the preset cooling capacity, wherein, first preset value and described second is preset
The value being worth in the range for the Water flow adjusting valve.
9. system according to claim 6, it is characterised in that the controller is additionally operable to：
The opening value that Water flow adjusting valve is reduced in Water flow control valve door causes the heat transfer in water side less than or equal to described pre-
It is equipped with after cold, in the case where the heat transfer in water side is less than or equal to the preset cooling capacity, records the water flow
Opening value is aperture limits value；
The opening value of the flow control valve is controlled to be no more than the aperture limits value.
10. system according to claim 9, it is characterised in that the controller is additionally operable to：
After the controller controls the opening value of the flow control valve to be no more than the aperture limits value, the ring is judged
Whether border temperature is less than the preset temperature, judges whether the ambient humidity is less than the default humidity；
It is less than the preset temperature in the environment temperature, and the ambient humidity is solved less than in the case of the default humidity
Except the opening value to the flow control valve is no more than the control of the aperture limits value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041483.4A CN104566835B (en) | 2015-01-27 | 2015-01-27 | Control method and system for preventing condensation of chilled water type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041483.4A CN104566835B (en) | 2015-01-27 | 2015-01-27 | Control method and system for preventing condensation of chilled water type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104566835A CN104566835A (en) | 2015-04-29 |
| CN104566835B true CN104566835B (en) | 2018-04-17 |
Family
ID=53083494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510041483.4A Active CN104566835B (en) | 2015-01-27 | 2015-01-27 | Control method and system for preventing condensation of chilled water type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104566835B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631464A (en) * | 2017-09-13 | 2018-01-26 | 珠海格力电器股份有限公司 | Heat exchanger assembly, design method thereof and air conditioner |
| CN107869830B (en) * | 2017-11-13 | 2020-02-28 | 珠海格力电器股份有限公司 | Air conditioner control method and device |
| CN109163410B (en) * | 2018-08-17 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Refrigerant heat dissipation anti-condensation control method and heat pump system |
| CN109282370B (en) * | 2018-10-29 | 2024-03-01 | 福建天佐环境科技有限公司 | Cooling system of air conditioner external unit and control method thereof |
| CN109724213B (en) * | 2018-12-13 | 2020-11-03 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| WO2020129153A1 (en) | 2018-12-18 | 2020-06-25 | 三菱電機株式会社 | Air conditioning device |
| CN109945400A (en) * | 2019-03-29 | 2019-06-28 | 广东美的制冷设备有限公司 | Air conditioner and its dewing-proof method and device |
| CN112702886B (en) * | 2019-10-22 | 2022-09-02 | 华为技术有限公司 | Liquid cooling heat dissipation system, heat dissipation control method and control chip |
| CN113175741B (en) * | 2021-04-30 | 2022-09-27 | 中思达(北京)节能科技有限公司 | Dehumidification and cooling method for central air conditioner tail end heat exchanger |
| CN117029899B (en) * | 2023-10-08 | 2023-12-19 | 南通远征冷冻设备有限公司 | Refrigerating equipment instrument debugging system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740671A (en) * | 2005-09-15 | 2006-03-01 | 上海塔格工贸有限公司 | Flooring radiative cooling air conditioning system |
| CN102052738B (en) * | 2010-11-24 | 2013-05-08 | 东南大学 | Air-conditioner control system and method of indoor type low-temperature radiation and fresh air |
| CN103134145B (en) * | 2011-11-24 | 2016-03-02 | 珠海格力电器股份有限公司 | Control method of water-cooling water chilling unit and water-cooling water chilling unit |
| JP2014129960A (en) * | 2012-12-28 | 2014-07-10 | Daikin Ind Ltd | Refrigeration device |
| CN203310050U (en) * | 2013-06-27 | 2013-11-27 | 广东申菱空调设备有限公司 | Variable air volume dew-point controlled air conditioning system |
-
2015
- 2015-01-27 CN CN201510041483.4A patent/CN104566835B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104566835A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104566835B (en) | Control method and system for preventing condensation of chilled water type air conditioner | |
| CN105674496B (en) | A kind of air-conditioner defrosting method | |
| Jang et al. | Continuous heating of an air-source heat pump during defrosting and improvement of energy efficiency | |
| EP2719966B1 (en) | Refrigeration air-conditioning device | |
| CN106931587B (en) | The control method and air-conditioning of air-conditioning | |
| US10962249B2 (en) | Air conditioning apparatus and air conditioning control method | |
| CN104236027A (en) | Air-conditioning apparatus | |
| CN106765859A (en) | The refrigerated dehumidification control method and air-conditioning system of air-conditioning | |
| CN107084499A (en) | Air conditioner defrosting control method | |
| CN106839324A (en) | A kind of air-conditioner and its constant temperature dehumidification control method | |
| CN106288243A (en) | The defrosting control method of air-conditioner and device | |
| CN101113834A (en) | Method of controlling air conditioner | |
| CN108151254B (en) | Air conditioner, operation control method, and computer-readable storage medium | |
| EP2881685B1 (en) | Container refrigeration device and control method thereof | |
| CN107388499A (en) | A kind of domestic air conditioning defrosting control method | |
| JP2016090482A (en) | Environmental testing method and environmental testing apparatus | |
| CN107477780A (en) | Method for adjusting evaporation temperature of indoor unit of air conditioner and air conditioner | |
| WO2022222940A1 (en) | Air conditioning unit and defrosting control method therefor | |
| CN110513949A (en) | A kind of defrosting control method and device | |
| CN106642589A (en) | Enthalpy value control method of full fresh air constant-temperature constant-humidity unit | |
| CN107062470A (en) | A kind of air conditioner and its constant temperature dehumidification control method | |
| CN105115033B (en) | A kind of energy saving air-return air conditioner and its control method | |
| CN107975958B (en) | Air conditioning unit and dehumidification hot-fluorination defrosting control method thereof | |
| CN112378132B (en) | Defrosting control device and method of air conditioner and air conditioner | |
| JPH03244956A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |