CN103884058A - Direct evaporation type air cooling type fresh air unit - Google Patents
Direct evaporation type air cooling type fresh air unit Download PDFInfo
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- CN103884058A CN103884058A CN201410108828.9A CN201410108828A CN103884058A CN 103884058 A CN103884058 A CN 103884058A CN 201410108828 A CN201410108828 A CN 201410108828A CN 103884058 A CN103884058 A CN 103884058A
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Abstract
Disclosed is a direct evaporation type air cooling type fresh air unit. An inlet air valve (13) is arranged at one end of an air conditioning cabinet (1), an air filter (14) is arranged on the inner side of the inlet air valve, a fan (2) is arranged at the other end of the air conditioning cabinet, a first-level refrigerating system, a second-level refrigerating system and a third-level refrigerating system are arranged, the first-level refrigerating system is provided with a first refrigerating circuit, a second refrigerating circuit and a third refrigerating circuit, the first refrigerating circuit, the second refrigerating circuit and the third refrigerating circuit can independently or simultaneously run, a first-level evaporator (11) shared by the first refrigerating circuit, the second refrigerating circuit and the third refrigerating circuit is arranged in the air conditioning cabinet, the second-level refrigerating system is provided with a fourth refrigerating circuit and a fifth refrigerating circuit, the fourth refrigerating circuit and the fifth refrigerating circuit can independently or simultaneously run, a second-level evaporator (6) shared by the fourth refrigerating circuit and the fifth refrigerating circuit is arranged in the air conditioning cabinet, and the third-level refrigerating system is composed of a sixth refrigerating circuit, and a third-level evaporator (4) is arranged in the air conditioning cabinet. The unit can stably run under the wide weather condition, the dehumidification requirement of the air conditioning system is met, the air supply comfort is improved, and moisture condensation is prevented from happening to an air outlet.
Description
Technical field
The present invention relates to a kind of new blower fan group, is exactly the new blower fan group of a kind of direct-evaporation-type Wind-cooling type based on humiture independence control air conditioner system.
Background technology
Energy Saving of Central Air-conditioning is the important component part of building energy conservation, humiture independence control air conditioner system is development in recent years a kind of air conditioning system faster, its adopt two overlap independently system control respectively with conditioning chamber in humidity and temperature, avoided the reduction of the energy waste that in conventional system, humiture Combined Treatment is brought and air quality.The advantage of humiture independence control air conditioner system in building energy conservation has been that increasing HVAC industry personage understands and accepts, and in Practical Project, obtained increasing application.In humiture autonomous control system, the control of humidity realizes by new wind, by a certain amount of new wind process send into after suitable moisture level indoor, by the new wind being dried, indoor remaining wetting taken away, ensure the control requirement of indoor humidity, the new blower fan group of therefore new wind being carried out to cool-down dehumidification processing is one of visual plant of humiture independence control air conditioner system.The new blower fan group of direct-evaporation-type Wind-cooling type is without air-conditioner water system, flexible and convenient to use, and can, by air-treatment to lower dew-point temperature, be a kind of fresh-air handling unit that is well suited for using in humiture independence control air conditioner system.But the new blower fan group of current used direct-evaporation-type master is if it were not for for humiture independence control air conditioner system, in standard GB/T/T 25128-2010 " direct-evaporation-type brand new air processing group ", according to the difference of processed new wind air-out dry-bulb temperature, unit is divided into large enthalpy difference type and little enthalpy difference type two classes.Air-out dry-bulb temperature be not more than 23 DEG C for large enthalpy difference type, taking 27 DEG C as new wind processing target as little enthalpy difference type, and for most practical engineering project, leaving air temp is that the new wind of 23 DEG C can not all be taken away indoor humidity load.The new blower fan group of direct-evaporation-type is to be mainly used in the VMC of multi-connected air conditioning system at present, its operating temperature interval is less, when general outside air temperature is down to 23 DEG C of left and right, the refrigeration system of the new blower fan group of direct-evaporation-type is out of service, new wind is not freezed, blower fan is directly sent outdoor new wind into room.The design of the new blower fan group of existing direct-evaporation-type is not suitable in humiture autonomous control system yet, because the humidity load in air-conditioned room is generally produced by personnel, annual humidity load changes less, resh air requirement is stable, but the air intake state difference of different new wind of period is very large, season in midsummer, refrigerating capacity and moisture removal were all very large, in clammy season, outdoor temperature is low and humidity load still exists, still need unit to carry out cooling and dehumidifying to new wind, this refrigerating capacity that unit will be provided differs greatly, and may differ several times even tens times.For adopting the new blower fan group of direct-evaporation-type Wind-cooling type of constant speed compressor, the refrigerating capacity excursion that can provide is very limited, if employing frequency-changeable compressor, although the refrigerating capacity adjustable range of unit can have larger increase, in the situation that rate of load condensate is very little, unit operation performance condition worsens, Efficiency Decreasing, and evaporating temperature raises, dehumidifying effect declines, and also cannot realize the stable operation under wide meteorological condition.
Summary of the invention
The present invention is directed to the feature that the new blower fan group of existing direct-evaporation-type Wind-cooling type can not meet humiture independence control air conditioner system and change at outdoor weather condition stylish wind processing requirements, provide a kind of direct-evaporation-type Wind-cooling type new blower fan group, not only can make unit stable operation under wide meteorological condition, meet the dehumidifying requirement of air-conditioning system, can also improve air-supply comfortableness, prevent air outlet dewfall.
For achieving the above object, the technical solution used in the present invention is:
The new blower fan group of a kind of direct-evaporation-type Wind-cooling type, there is import air-valve one end of air conditioning box body, there is air cleaner import air-valve inboard, the other end has blower fan, be provided with one-level refrigeration system, two-stage system cooling system and three tier structure cooling system, one-level refrigeration system has can be moved and shared one-level evaporimeter is arranged on the first refrigerating circuit in air conditioning box body individually or simultaneously, the second refrigerating circuit and the 3rd refrigerating circuit, two-stage system cooling system has and can move individually or simultaneously and shared secondary evaporimeter is arranged on the 4th refrigerating circuit and the 5th refrigerating circuit in air conditioning box body, the 6th refrigerating circuit that three tier structure cooling system is arranged in air conditioning box body by its three grades of evaporimeters forms, wherein, one-level evaporimeter, secondary evaporimeter and three grades of evaporimeters are successively set between air cleaner and blower fan.
In above-mentioned, the first refrigerating circuit is formed by the first steam-generating bank in the first compressor connecting through refrigerant line, the first condenser, the first heating power expansion valve and one-level evaporimeter; The second refrigerating circuit is formed by the second steam-generating bank in the second compressor connecting through refrigerant line, the second condenser, the second heating power expansion valve and one-level evaporimeter; The 3rd refrigerating circuit is formed by the 3rd steam-generating bank in the 3rd compressor connecting through refrigerant line, the 3rd condenser, the 3rd heating power expansion valve and one-level evaporimeter; The 4th refrigerating circuit is formed by the 4th steam-generating bank in the 4th compressor connecting through refrigerant line, the 4th condenser, the 4th heating power expansion valve and secondary evaporimeter; The 5th refrigerating circuit is formed by the 5th steam-generating bank in the 5th compressor connecting through refrigerant line, the 5th condenser, the 5th heating power expansion valve and secondary evaporimeter; The 6th refrigerating circuit is formed by the 6th steam-generating bank in the 6th compressor connecting through refrigerant line, three grades of condenser coils, the 6th heating power expansion valve, three grades of evaporimeters; Three grades of condenser coils in the 6th refrigerating circuit are arranged in air conditioning box body and between three grades of evaporimeters and blower fan.
New wind heats by three grades of condenser coils after by one, two, three evaporation coil cooling and dehumidifying again, is ensureing to process the new wind water capacity wind pushing temperature that raises constant in the situation that, and new wind after treatment is sent after pressurizeing by blower fan.The condenser centralized arrangement of 5 refrigerating circuits of I and II system, arranges three condensation fans, and every condensation fan can independently be opened, and the unlatching situation of condensation fan is determined according to the situation of refrigerating circuit work.
The present invention has following features compared with current traditional new blower fan group of direct-evaporation-type Wind-cooling type:
(1) dehumidifying effect is large.The new blower fan group of traditional direct-evaporation-type Wind-cooling type is general only processes 23 DEG C of left and right by new wind, and the present invention is by multilevel system, new wind can be processed to corresponding water capacity while being 12 DEG C to dew-point temperature.
(2) can stable operation within the scope of extremely wide meteorological condition.The new blower fan group of tradition direct-evaporation-type Wind-cooling type is according to the outdoor air parameter designing of hot season, refrigerating capacity adjustable range is limited, the clammy season of and high humidity low in outdoor temperature, cannot realize the requirement that significantly reduces refrigerating capacity and meet again simultaneously moisture removal, and the present invention is by multilevel system and multiple refrigerating circuit are set, can address this problem well.
(3) unit efficiency is high.Due to system operating mode differences at different levels, in actual use, according to the different unlatchings of controlling each refrigerating circuit of meteorological condition, therefore, each level system and each refrigerating circuit can be in best efficiency point work, and unit whole efficiency is high.
(4) reliable, safe.Compared with connecing the new blower fan group of vaporation-type with the existing high-capacity direct being formed by multiple compressors, refrigerant line forms different, existing multi-compressor unit refrigerant line shares, in the time of underload, can produce cold-producing medium flow velocity too low, the problems such as oil return difficulty, although but three refrigerating circuits of a level system share an evaporimeter in the present invention, two refrigerating circuits of level two share an evaporimeter, but each refrigerating circuit pipe-line system is completely independently, therefore, the problem such as the too low and oil return difficulty of cold-producing medium flow velocity while there will not be underload, unit operation is reliable, safe.
(5) condensation heat is reclaimed, improved comfort level.Take away indoor all humidity loads for making novel wind energy, new wind need be processed to very low dew-point temperature, if the new wind of low temperature is directly sent into room and can be made people feel uncomfortable and bring the problems such as air outlet dewfall, the present invention is arranged on new wind by the condenser of third level refrigeration system and processes in casing, utilizing condensation heat to reclaim heats the new wind of low temperature drying, avoid use and the energy resource consumption of reheater, improved air-supply comfortableness and can not produce the problems such as air outlet dewfall.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
With reference to Fig. 1, the new blower fan group of a kind of direct-evaporation-type Wind-cooling type provided by the invention, there is import air-valve 13 one end of air conditioning box body 1, there is air cleaner 14 import air-valve 13 inboards, the other end has blower fan 2, be provided with one-level refrigeration system, two-stage system cooling system and three tier structure cooling system, one-level refrigeration system has can be moved and shared one-level evaporimeter 11 is arranged on the first refrigerating circuit of 1 li of air conditioning box body individually or simultaneously, the second refrigerating circuit and the 3rd refrigerating circuit, two-stage system cooling system has and can move individually or simultaneously and shared secondary evaporimeter 6 is arranged on the 4th refrigerating circuit and the 5th refrigerating circuit of 1 li of air conditioning box body, the 6th refrigerating circuit that three tier structure cooling system is arranged on 1 li of air conditioning box body by its three grades of evaporimeters 4 forms, wherein, one-level evaporimeter 11, secondary evaporimeter 6 and three grades of evaporimeters 4 are successively set between air cleaner 14 and blower fan 2.
The first refrigerating circuit is formed by the first steam-generating bank 9 in the first compressor 18, the first condenser 22, the first heating power expansion valve 16 and the one-level evaporimeter 11 that connect through refrigerant line; The second refrigerating circuit is formed by the second steam-generating bank 12 in the second compressor 19, the second condenser 23, the second heating power expansion valve 17 and the one-level evaporimeter 11 that connect through refrigerant line; The 3rd refrigerating circuit is formed by the 3rd steam-generating bank 10 in the 3rd compressor 20, the 3rd condenser 21, the 3rd heating power expansion valve 15 and the one-level evaporimeter 11 that connect through refrigerant line, one-level evaporimeter 11 is that three loops share, but in coil pipe, the refrigerant line in each loop is not communicated with mutually, completely independent, the cold-producing medium in each loop enters coil pipe after by liquid-dividing head separatory separately, after being collected by collector, leave coil pipe, each refrigerating circuit can also can move simultaneously in isolated operation.
The 4th refrigerating circuit is formed by the 4th steam-generating bank 8 in the 4th compressor 28, the 4th condenser 24, the 4th heating power expansion valve 26 and the secondary evaporimeter 6 that connect through refrigerant line; The 5th refrigerating circuit is formed by the 5th steam-generating bank 7 in the 5th compressor 29, the 5th condenser 25, the 5th heating power expansion valve 27 and the secondary evaporimeter 6 that connect through refrigerant line, wherein, secondary evaporimeter 6 is that two loops share, but in coil pipe, the refrigerant line in each loop is not communicated with mutually, completely independent, the cold-producing medium in each loop enters coil pipe after by liquid-dividing head separatory separately, after being collected, leaves coil pipe by collector, and each refrigerating circuit can also can move simultaneously in isolated operation.
The condenser of 5 refrigerating circuits of I and II refrigeration system, i.e. the first condenser 22, the second condenser 23, the 3rd condenser 21, the 4th condenser 24, the 5th condenser 25 centralized arrangement, three condensation fans 32 are set, every condensation fan 32 can independently be opened, and the unlatching situation of each condensation fan is determined according to the situation of refrigerating circuit work.
The 6th refrigerating circuit is formed by the 6th steam-generating bank 5 in the 6th compressor 31 connecting through refrigerant line, three grades of condenser coils 3, the 6th heating power expansion valve 30, three grades of evaporimeters 4, wherein, three grades of condenser coils 3 in the 6th refrigerating circuit are arranged on 1 li of air conditioning box body and between three grades of evaporimeters 4 and blower fan 2.
Different from I and II refrigeration system, three grades of condenser coils 3 of three tier structure cooling system are placed in air conditioning box body 1, be that new wind heats by three grades of condenser coils 3 after dehumidifying by one-level evaporimeter, secondary evaporimeter, three grades of evaporator cools again, in the case of ensureing to process the water capacity of the new wind wind pushing temperature that raises constant, new wind after treatment is sent after by blower fan 2 pressurizations.
When season in midsummer, outside air temperature is high, high humidity, and air enthalpy is high, and new blower fan group will provide very large processing enthalpy difference, and now six refrigerating circuits of three-level system are all worked, and unit is pressed maximum cooling capacity operation.New wind enters in air conditioning box body 1 by import air-valve 13, after air cleaner 14 filters, by one-level evaporimeter 11, after one-level evaporimeter 11 cooling and dehumidifyings, enter secondary evaporimeter 6 dehumidifying that is again cooled, after secondary evaporimeter 6, air themperature is about 15 DEG C of left and right.New wind continues to flow through three grades of evaporimeters 4 and carries out cooling and dehumidifying for the third time, after cooling through three grades, air themperature can reach 12 DEG C, the new wind of low temperature drying continues to flow through three grades of condenser coils 3, the water capacity of air is constant, temperature is increased to 22 DEG C of left and right, and new wind after treatment is sent from air conditioning box body 1 after blower fan 2 pressurizations.
Work as outside air temperature, when damp condition changes, the enthalpy of air also changes, in the time that air enthalpy is reduced to a certain degree, controller can cut off the first compressor 18, the second compressor 19, in the 3rd compressor 20 one, make to only have two refrigerating circuits in work in a level system, in the time that air enthalpy continues to reduce, controller can stop a compressor again, make to only have a refrigerating circuit in work in one-level refrigeration system, because three groups of evaporator pipelines are to be arranged in equably in one-level evaporimeter 11, therefore, in the time that one-level refrigeration system only has one or two refrigerating circuits work, the Temperature Distribution on one-level evaporimeter 11 surfaces is still uniformly, it is also uniform that the cooling and dehumidifying of air is processed.
Controller determines compressor unlatching number according to the enthalpy situation of outdoor air, along with the reduction of outdoor air enthalpy reduces the work number of units of compressor gradually, utilize compressor to open number refrigerating capacity is carried out to classification adjusting, load hour, five compressors of I and II refrigeration system are not all opened, only have the 6th compressor 31 of three tier structure cooling system to open, three grades of evaporimeters 4 carry out cooling and dehumidifying to new wind, and three grades of condenser coils 3 carry out heat again to the air after cooling and dehumidifying.
The present invention is not limited to above-mentioned embodiment; anyone can draw other forms of product under enlightenment of the present invention; as change refrigerating circuit number etc. in system progression or every level system; no matter but do any variation in its shape or structure; every technical scheme identical or close with the present invention, all within protection domain.
Claims (8)
1. the new blower fan group of direct-evaporation-type Wind-cooling type, it is characterized in that, there is import air-valve (13) one end of air conditioning box body (1), there is air cleaner (14) import air-valve (13) inboard, the other end has blower fan (2), be provided with one-level refrigeration system, two-stage system cooling system and three tier structure cooling system, one-level refrigeration system has can be moved and shared one-level evaporimeter (11) is arranged on the first inner refrigerating circuit of air conditioning box body (1) individually or simultaneously, the second refrigerating circuit and the 3rd refrigerating circuit, two-stage system cooling system has and can move individually or simultaneously and shared secondary evaporimeter (6) is arranged on the 4th inner refrigerating circuit of air conditioning box body (1) and the 5th refrigerating circuit, three tier structure cooling system is arranged on the 6th inner refrigerating circuit of air conditioning box body (1) by its three grades of evaporimeters (4) and forms, wherein, one-level evaporimeter (11), secondary evaporimeter (6) and three grades of evaporimeters (4) are successively set between air cleaner (14) and blower fan (2).
2. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the first refrigerating circuit is formed by the first steam-generating bank (9) in the first compressor (18) connecting through refrigerant line, the first condenser (22), the first heating power expansion valve (16) and one-level evaporimeter (11).
3. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the second refrigerating circuit is formed by the second steam-generating bank (12) in the second compressor (19) connecting through refrigerant line, the second condenser (23), the second heating power expansion valve (17) and one-level evaporimeter (11).
4. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the 3rd refrigerating circuit is formed by the 3rd steam-generating bank (10) in the 3rd compressor (20) connecting through refrigerant line, the 3rd condenser (21), the 3rd heating power expansion valve (15) and one-level evaporimeter (11).
5. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the 4th refrigerating circuit is formed by the 4th steam-generating bank (8) in the 4th compressor (28) connecting through refrigerant line, the 4th condenser (24), the 4th heating power expansion valve (26) and secondary evaporimeter (6).
6. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the 5th refrigerating circuit is formed by the 5th steam-generating bank (7) in the 5th compressor (29) connecting through refrigerant line, the 5th condenser (25), the 5th heating power expansion valve (27) and secondary evaporimeter (6).
7. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 1, it is characterized in that, the 6th refrigerating circuit is formed by the 6th steam-generating bank (5) in the 6th compressor (31) connecting through refrigerant line, three grades of condenser coils (3), the 6th heating power expansion valve (30), three grades of evaporimeters (4).
8. the new blower fan group of a kind of direct-evaporation-type Wind-cooling type according to claim 7, is characterized in that, it is inner and between three grades of evaporimeters (4) and blower fan (2) that the three grades of condenser coils (3) in the 6th refrigerating circuit are arranged on air conditioning box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108828.9A CN103884058A (en) | 2014-03-24 | 2014-03-24 | Direct evaporation type air cooling type fresh air unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108828.9A CN103884058A (en) | 2014-03-24 | 2014-03-24 | Direct evaporation type air cooling type fresh air unit |
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| CN103884058A true CN103884058A (en) | 2014-06-25 |
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| CN201410108828.9A Pending CN103884058A (en) | 2014-03-24 | 2014-03-24 | Direct evaporation type air cooling type fresh air unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543267A (en) * | 2017-09-11 | 2018-01-05 | 西安市建筑工程总公司 | A kind of construction site purification of air cooling system and purifying and cooling method |
| CN113091166A (en) * | 2021-04-09 | 2021-07-09 | 中铁第六勘察设计院集团有限公司 | Hierarchical dehumidification and fresh air treatment operation method for underground engineering dehumidification system |
| CN114738832A (en) * | 2022-03-22 | 2022-07-12 | 青岛海尔空调电子有限公司 | Direct expansion type air conditioning system and control method thereof |
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| CN114738832A (en) * | 2022-03-22 | 2022-07-12 | 青岛海尔空调电子有限公司 | Direct expansion type air conditioning system and control method thereof |
| CN114738832B (en) * | 2022-03-22 | 2024-06-07 | 青岛海尔空调电子有限公司 | Direct expansion type air conditioning system and control method thereof |
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Application publication date: 20140625 |