CN105387658A - Water-cooling cold air type air conditioning equipment and operation method based on equipment - Google Patents
Water-cooling cold air type air conditioning equipment and operation method based on equipment Download PDFInfo
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- CN105387658A CN105387658A CN201510670116.0A CN201510670116A CN105387658A CN 105387658 A CN105387658 A CN 105387658A CN 201510670116 A CN201510670116 A CN 201510670116A CN 105387658 A CN105387658 A CN 105387658A
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- superheat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
Abstract
The invention relates to water-cooling cold air type air conditioning equipment and an operation method based on the equipment. The water-cooling cold air type air conditioning equipment comprises a compressor, a condenser, an evaporator and a reheating unit. The reheating unit is located between the evaporator and the compressor. A working medium flowing through the condenser exchanges heat with cooling water provided by a cooling tower, the cooling water subjected to heat exchange is supplied to the reheating unit, and therefore a working medium flowing from the evaporator is heated before entering the compressor. The working medium flowing out of the evaporator enters the reheating unit and exchanges heat with the incoming cooling water before entering the compressor, the working medium is heated by absorbing heat of the cooling water before entering the compressor, the temperature of the working medium is then increased, the liquid working medium is effectively promoted to be converted into a gaseous working medium, the liquid working medium is prevented from impacting an impeller, and the compressor is prevented from being damaged. Meanwhile, the temperature of lubricating oil can be increased through the heating process of the reheating unit and the lubricating effect is further improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of water-cooled cold type air-conditioning equipment and the method for operating based on this equipment.
Background technology
Water-cooled cold type Air conditioning unit is when refrigerating operaton, and the refrigerant after throttling flows to the direction of evaporimeter and air flow is following current, and the refrigerant temperature after evaporation is lower than air conditioning exhausting temperature.When running under bad working environments, the suction temperature that there will be unit is too low, causes absorbing gas belt liquid, and then causes compressor to occur the situation of liquid refrigerant impact compress machine impeller; Lubricating Oil Temperature also can be too low simultaneously, and unit evaporating temperature is constant, and the oily degree of superheat also becomes too low thereupon, and oil lubricity is deteriorated, thus affects the reliability service of compressor.
Usually adopt in prior art and increase the mode such as economizer or its spin-off, the subcooled liquid of taking condensator outlet solves liquid hammer and the too low problem of oil temperature, but the suction temperature of this mode air-conditioning system, oil temperature etc. are uncontrollable, and are also unfavorable for that evaporimeter gives full play to its heat transfer effect.
Summary of the invention
The object of the invention is to propose a kind of water-cooled cold type air-conditioning equipment and the method for operating based on this equipment, with the impact avoiding compressor to be subject to liquid refrigerant as far as possible, and improve the lubricant effect of lubricating oil.
For achieving the above object, the invention provides a kind of water-cooled cold type air-conditioning equipment, comprise compressor, condenser, evaporimeter and hot cell again, wherein said hot cell is again between described evaporimeter and described compressor, the cooling water that flowing through the working media of described condenser and cooling tower provides carries out heat exchange, hot cell again described in cooling water after heat exchange feeds, with to the working media from described evaporimeter, heated before entering described compressor.
Further, also comprise reheating inlet pipeline, reheating water return pipeline, water pump and control valve, described reheating inlet pipeline is connected between the delivery port of described condenser and the water inlet of described hot cell again, described in described reheating water return pipeline is connected to again between the delivery port of hot cell and the water return outlet of described cooling tower, described water pump is positioned on described reheating inlet pipeline, cooling water for the delivery port of described condenser is discharged guide to described in the water inlet of hot cell again, described control valve is positioned on described reheating inlet pipeline and/or described reheating water return pipeline, for regulating the cooling water flow on the pipeline of described control valve place.
Further, also comprise temperature detecting unit, before described temperature detecting unit is positioned at described compressor inlet, for detecting the temperature of the working media entered before described compressor.
Further, also comprise controller, described controller carries out signal with described temperature detecting unit and described control valve and is connected, and the temperature that described controller can detect according to described temperature detecting unit controls the aperture of described control valve.
Further, described controller comprises:
Receiver module, for receiving the temperature signal that described temperature detecting unit sends;
Computing module, for being scaled suction superheat by described temperature signal;
Comparison module, for comparing described suction superheat and the default degree of superheat;
Adjustment module, sends for the comparative result according to described comparison module the signal controlling described control valve opening to described control valve.
Further, the described default degree of superheat comprises first and presets the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter is Δ T
0=0.5*Te+9.
For achieving the above object, present invention also offers a kind of method of operating of above-mentioned water-cooled cold type air-conditioning equipment, comprising:
By with the working media heat exchange flowing through described condenser after cooling water introduce described in hot cell again, described in utilization, hot cell, to the working media from described evaporimeter, heated before entering described compressor again.
Further, also comprise:
Water pump and control valve are provided;
The water inlet of hot cell again described in by described water pump the cooling water that the delivery port of described condenser is discharged being guided to;
By the aperture controlling described control valve regulate enter described in the cooling water flow of hot cell again.Further, also comprise:
Controller and the temperature detecting unit for the temperature that detects the working media entered before described compressor are provided;
Described in the described aperture adjustment by controlling described control valve enters, the operation of the cooling water flow of hot cell comprises again:
Described controller receives the temperature signal that described temperature detecting unit sends, and described temperature signal is scaled suction superheat;
Described controller compares described suction superheat and the default degree of superheat, and sends the signal controlling described control valve opening to described control valve according to comparative result.
Further, the described default degree of superheat comprises first and presets the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter is Δ T
0=0.5*Te+9; Wherein, described controller compares described suction superheat and the default degree of superheat, and comprises according to comparative result to send operation from the signal controlling described control valve opening to described control valve:
When described suction superheat presets the degree of superheat lower than described first, described controller sends the signal increasing described control valve opening to described control valve;
Preset the degree of superheat when described suction superheat is equal to or higher than described first, but when presetting the degree of superheat lower than described second, described controller sends the signal keeping described control valve opening constant to described control valve;
When described suction superheat is equal to or higher than the second default degree of superheat, described controller sends the signal reducing described control valve opening to described control valve.
Further, also comprise:
After described water-cooled cold type air-conditioning equipment start runs, first described control valve is initialized, described control valve opening is set to minimum of a value;
After the described control valve of initialization, when described suction superheat is equal to or higher than the described first default degree of superheat, described controller sends the signal keeping described control valve opening constant to described control valve, otherwise described controller sends the signal increasing described control valve opening to described control valve.
Based on technique scheme, the present invention by arranging hot cell again between evaporimeter and compressor, and will cooling tower be come from and be incorporated into this again in hot cell with the cooling water after working media heat exchange in condenser, from evaporimeter working media out before entering compressor, the cooling water that can be introduced into again hot cell and introducing carries out heat exchange, working media was heated before entering compressor by absorbing the heat of cooling water, and then improve the temperature of working media, liquid working media is effectively impelled to change gaseous working medium into, and then prevent liquid working media to the impact of compressor impeller, avoid the damage of compressor, meanwhile, then the heating process of hot cell also can improve the temperature of lubricating oil, improves lubricant effect further.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a water-cooled cold type air-conditioning equipment embodiment.
Fig. 2 is the systematic schematic diagram of a water-cooled cold type air-conditioning equipment of the present invention embodiment.
In figure: 1-compressor, 2-condenser, 3-throttle structure, 4-evaporimeter, 5-blower fan, 6-filter, 7-temperature detecting unit, 8-is hot cell again, 9-water pump, 10-control valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " transverse direction ", " longitudinal direction ", " front ", " afterwards ", " left side ", " right side ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
As shown in Figure 1, the structural representation of the water-cooled cold type air-conditioning equipment embodiment will improved for the present invention.This water-cooled cold type air-conditioning equipment comprises compressor 1, condenser 2, throttle structure 3, evaporimeter 4, wherein the vicinity of evaporimeter 4 is also provided with blower fan 5, to accelerate the heat exchange process of evaporimeter 4, filter 6 can also be provided with between condenser 2 and throttle structure 3, to filter the working media entering throttle structure 3, prevent from working media, being mixed into foreign material blocking throttle structure 3.
In order to realize object of the present invention, the present invention proposes a kind of water-cooled cold type air-conditioning equipment, as shown in Figure 2, comprise compressor 1, condenser 2, evaporimeter 4 and reheating unit 8, wherein said reheating unit 8 is between described evaporimeter 4 and described compressor 1, the cooling water that flowing through the working media of described condenser 2 and cooling tower provides carries out heat exchange, cooling water after heat exchange feeds described reheating unit 8, with to the working media from described evaporimeter 4, heated before entering described compressor 1.
The present invention by arranging reheating unit 8 between evaporimeter 4 and compressor 1, and will cooling tower be come from and be incorporated in this reheating unit 8 with the cooling water after working media heat exchange in condenser 2, from evaporimeter 4 working media out before entering compressor 1, reheating unit 8 can be introduced into and carry out heat exchange with the cooling water introduced, working media was heated before entering compressor by absorbing the heat of cooling water, and then improve the temperature of working media, liquid working media is effectively impelled to change gaseous working medium into, and then prevent liquid working media to the impact of compressor impeller, avoid the damage of compressor, meanwhile, then the heating process of hot cell also can improve the temperature of lubricating oil, improves lubricant effect further.
In addition, in above-described embodiment, heat transferring medium due to reheating unit 8 takes from the cooling water with the working media heat exchange flowing through condenser, instead of the working media of condenser inside, therefore air-conditioning equipment is when mating refrigerant (i.e. working media) groundwater increment, the performance of air-conditioning equipment is lost for cost because improving the reliabilities such as suction superheat to reduce evaporating temperature without the need to misgivings, thus pour into the coolant quantity of optimum, air-conditioning equipment is run to higher, more excellent evaporating temperature, and then make evaporimeter give full play to its heat transfer effect, improve the performance of complete machine air-conditioning equipment.Meanwhile, cooling water owing to achieving heat exchange in reheating unit 8, and its temperature reduces further, can save the energy consumption of cooling tower.
As shown in Figure 2, cooling tower is provided with delivery port and water return outlet, condenser 2 is provided with the water inlet be connected with cooling tower delivery port and the delivery port be connected with cooling tower water return outlet, cooling water in cooling tower enters condenser 2 by the water inlet of condenser 2, in condenser 2 with the working media heat exchange flowing through condenser 2 after, then flow back to cooling tower by the delivery port of condenser 2.
The specific implementation introducing cooling water from condenser 2 can have a variety of, as long as can satisfy the demand.In a preferred embodiment, water-cooled cold type air-conditioning equipment also comprises reheating inlet pipeline, reheating water return pipeline, water pump 9 and control valve 10, described reheating inlet pipeline is connected between the delivery port of described condenser 2 and the water inlet of described reheating unit 8, between the delivery port that described reheating water return pipeline is connected to described reheating unit 8 and the water return outlet of described cooling tower, described water pump 9 is positioned on described reheating inlet pipeline, cooling water for being discharged by the delivery port of described condenser 2 guides to the water inlet of described reheating unit 8, described control valve 10 is positioned on described reheating inlet pipeline and/or described reheating water return pipeline, for regulating the cooling water flow on the pipeline of described control valve 10 place.
In above-described embodiment, reheating unit 8 is entered by reheating inlet pipeline with the cooling water after the working media heat exchange flowing through condenser 2, heat exchange is carried out at reheating unit 8 inner cooling water and the working media flowing through reheating unit 8, after cooling water completes the heating to working media, then flow back to cooling tower by reheating water return pipeline.
Wherein, water pump 9 can be arranged on reheating inlet pipeline, also can be arranged on reheating water return pipeline, or on reheating inlet pipeline and reheating water return pipeline, all water pump is set, as long as can realize cooling water being introduced reheating unit 8 and leading back the effect to cooling tower.
The specific constructive form of control valve 10 can have multiple choices, can be such as electric control valve, also can manual modulation valve, can be ball valve, also can butterfly valve etc.Control valve 10 can be arranged on reheating inlet pipeline, also can be arranged on reheating water return pipeline, or all arranges control valve on reheating inlet pipeline and reheating water return pipeline, as long as can realize the control to the cooling water water yield entering reheating unit 8.When closing control valve 10, cooling water does not enter reheating unit 8, and reheating unit 8 is inoperative; When opening control valve 10, cooling water enters reheating unit 8, and the water yield can be controlled by the aperture of control valve 10.
In order to monitor the temperature of the working media entering compressor 1, water-cooled cold type air-conditioning equipment can also comprise temperature detecting unit 7, before described temperature detecting unit 7 is positioned at the import of described compressor 1, for detecting the temperature of the working media entered before described compressor 1.Wherein, the concrete structure of temperature detecting unit 7 can be selected flexibly, such as can adopt temperature meter or temperature-sensitive bag etc.
In order to realize carrying out controllable adjustment to the temperature of the working media entering compressor 1, water-cooled cold type air-conditioning equipment can also comprise controller, described controller carries out signal with described temperature detecting unit 7 and described control valve 10 and is connected, and the temperature that described controller can detect according to described temperature detecting unit 7 controls the aperture of described control valve 10.
Its middle controller can adopt digital signal processor, special IC, field programmable gate array or other PLDs, discrete gate or transistor logic, discrete hardware components or it is appropriately combined arbitrarily.
Can comprise in an embodiment of described controller:
Receiver module, for receiving the temperature signal that described temperature detecting unit 7 sends;
Computing module, for being scaled suction superheat by described temperature signal;
Comparison module, for comparing described suction superheat and the default degree of superheat;
Adjustment module, sends for the comparative result according to described comparison module the signal controlling described control valve 10 aperture to described control valve 10.
Wherein, the described default degree of superheat can comprise first and preset the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter 4 is Δ T
0=0.5*Te+9.
The minimum of a value of the compressor air suction degree of superheat required when first degree of superheat is the air-conditioning equipment safe operation of water-cooled cold type, such as can be set to 6 DEG C, and safe operation to refer in the air-breathing of compressor not carrying liqs, can not be subject to the impact of absorbing gas belt liquid.In addition, due to working media enter compressor after can wash away the surface of shell of compressor and be subject to electronic friction, so the temperature of lubricating oil can be made to raise, therefore lubricating oil temperature can higher than suction temperature, as long as therefore can ensure that compressor air inlet has certain suction superheat, just can ensure enough oily degrees of superheat, prevent because the oily degree of superheat is too low and cause lubrication failure, and then cause compressor fault.
When suction superheat is too high, the air outlet temperature of compressor can be made also higher, and then affect the performance of air-conditioner set, therefore preset the degree of superheat also to need to arrange a upper limit, namely second the degree of superheat is preset, when suction superheat is greater than the second default degree of superheat, need the aperture reducing control valve 10, to reduce the heating effect of reheating unit 8.
Second restriction presetting the degree of superheat can be selected as required.Preferably, the second default degree of superheat is the first default degree of superheat and preset difference value sum.Wherein preset difference value Δ T
0relevant with evaporating temperature Te, pass is therebetween: Δ T
0=0.5*Te+9, and Δ T
0follow the situation of change of the oil dilution transition region curve of compressor safe operation.
Based on above-mentioned water-cooled cold type air-conditioning equipment, the present invention also proposes a kind of method of operating of water-cooled cold type air-conditioning equipment, comprising:
By with the working media heat exchange flowing through described condenser 2 after cooling water introduce described reheating unit 8, utilize described reheating unit 8 to the working media from described evaporimeter 4, heated before entering described compressor 1.
Said method can also comprise:
Water pump 9 and control valve 10 are provided;
By described water pump 9, the cooling water that the delivery port of described condenser 2 is discharged is guided to the water inlet of described reheating unit 8;
The cooling water flow entering described reheating unit 8 is regulated by the aperture controlling described control valve 10.In order to realize the further control to entering compressor operating medium temperature, said method can also comprise:
Controller and the temperature detecting unit 7 for the temperature that detects the working media entered before described compressor 1 are provided;
The described aperture by controlling described control valve 10 regulates the operation entering the cooling water flow of described reheating unit 8 to comprise:
Described controller receives the temperature signal that described temperature detecting unit 7 sends, and described temperature signal is scaled suction superheat;
Described controller compares described suction superheat and the default degree of superheat, and sends the signal controlling described control valve 10 aperture to described control valve 10 according to comparative result.
Particularly, the described default degree of superheat comprises first and presets the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter 4 is Δ T
0=0.5*Te+9; Wherein, described controller compares described suction superheat and the default degree of superheat, and comprises according to comparative result to send operation from the signal controlling described control valve 10 aperture to described control valve 10:
When described suction superheat presets the degree of superheat lower than described first, described controller sends the signal increasing described control valve 10 aperture to described control valve 10;
Preset the degree of superheat when described suction superheat is equal to or higher than described first, but when presetting the degree of superheat lower than described second, described controller sends the signal keeping described control valve 10 aperture constant to described control valve 10;
When described suction superheat is equal to or higher than the second default degree of superheat, described controller sends the signal reducing described control valve 10 aperture to described control valve 10.
Wherein, the operating procedure of concrete increase or reduction control valve 10 aperture can have to be selected comparatively flexibly, such as can preset ratio or the step-length of each adjustment, also can set every Preset Time, tune up or turn down preset ratio or step-length.
In addition, the method for operating of water-cooled cold type air-conditioning equipment can also comprise:
After described water-cooled cold type air-conditioning equipment start runs, first described control valve 10 is initialized, described control valve 10 aperture is set to minimum of a value;
After the described control valve 10 of initialization, when described suction superheat is equal to or higher than the described first default degree of superheat, described controller sends the signal keeping described control valve 10 aperture constant to described control valve 10, otherwise described controller sends the signal increasing described control valve 10 aperture to described control valve 10.
Be described below in conjunction with 2 pairs, accompanying drawing water-cooled cold type air-conditioning equipment of the present invention and based on the operation principle of an embodiment of the method for operating of this equipment and operating procedure:
A set of reheating unit 8 is increased after evaporimeter 4, directly quote the cooling water that condenser 2 exports, heat exchange is carried out with the working media after evaporation, before reheating unit 8 is intake, a water pump 9 is set, a control valve 10 is set after water outlet, aperture according to suction superheat automatic control and adjustment valve 10 regulates the water yield entered in reheating unit 8, suction temperature and oil temperature can be controlled by the water yield, thus improve the suction temperature of air-conditioning equipment, compressor is effectively prevented to be subject to hydraulic shock, improve oil temperature, effective raising oil lubrication effect, improve air-conditioning equipment complete machine reliability of operation.
The concrete operation method of a control valve embodiment is:
First illustratively, Δ Tx=suction superheat; Te=evaporating temperature; Δ Txd=first presets the degree of superheat, Δ T
0for preset difference value, Δ Txd+ Δ T
0it is the second default degree of superheat.
1, after energising, before device power-up, control valve first carries out initializing (such as closing minimum);
2, after device power-up is run, when temperature detecting unit detects the suction superheat Δ Tx > Δ Txd of the working media before entering compressor, it is constant that control valve opening maintains previous status;
3, after device power-up is run, when temperature detecting unit detects the suction superheat Δ Tx < Δ Txd of the working media before entering compressor, control valve starts action, and regulates in the following manner:
(1) as Δ Tx < Δ Txd, control valve opens 5% immediately, then opens large 5% every 5 minutes;
(2) as Δ Txd < Δ Tx < Δ Txd+ Δ T
0time, control valve state of remaining stationary is constant.
(3) as Δ Tx > Δ Txd+ Δ T
0time, control valve turned down 5% every 5 minutes;
4, after equipment shutdown, then electric control valve closes after compressor cuts out closes to minimum.
By the explanation to water-cooled cold type air-conditioning equipment of the present invention and the multiple embodiments based on the method for operating of this equipment, can see that water-cooled cold type air-conditioning equipment of the present invention and the method for operating embodiment based on this equipment at least have one or more advantages following:
1, by increasing a set of hot cell again after evaporimeter, quote the cooling water of condensator outlet, carry out the low temperature refrigerant after heating evaporation, improve suction temperature and the lubricating oil temperature of air-conditioning equipment, effectively prevent compressor from suffering hydraulic shock, improve oil lubrication effect, improve equipment reliability of operation.In addition, can also cooling water temperature be reduced, save the energy consumption of cooling tower.
2, by arranging controller, temperature detecting unit and control valve, achieve the suction temperature of air-conditioning equipment, the controlled of oil temperature, thus ensure that air-conditioning equipment runs safely and reliably under good environment.
3, because the heat transferring medium of reheating unit 8 takes from the cooling water of condensator outlet, instead of the working media of condenser inside, therefore air-conditioning equipment is when mating refrigerant (i.e. working media) groundwater increment, the performance of air-conditioning equipment is lost for cost because improving the reliabilities such as suction superheat to reduce evaporating temperature without the need to misgivings, thus pour into the coolant quantity of optimum, air-conditioning equipment is made to run to higher, more excellent evaporating temperature, and then make evaporimeter give full play to its heat transfer effect, improve the performance of complete machine air-conditioning equipment.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (11)
1. a water-cooled cold type air-conditioning equipment, it is characterized in that, comprise compressor (1), condenser (2), evaporimeter (4) and hot cell (8) again, wherein said hot cell again (8) is positioned between described evaporimeter (4) and described compressor (1), the cooling water that flowing through the working media of described condenser (2) and cooling tower provides carries out heat exchange, hot cell (8) again described in cooling water after heat exchange feeds, with to the working media from described evaporimeter (4), heated before entering described compressor (1).
2. water-cooled cold type air-conditioning equipment according to claim 1, it is characterized in that, also comprise reheating inlet pipeline, reheating water return pipeline, water pump (9) and control valve (10), described reheating inlet pipeline is connected between the delivery port of described condenser (2) and the water inlet of described hot cell again (8), described in described reheating water return pipeline is connected to again between the delivery port of hot cell (8) and the water return outlet of described cooling tower, described water pump (9) is positioned on described reheating inlet pipeline, cooling water for the delivery port of described condenser (2) is discharged guide to described in the water inlet of hot cell (8) again, described control valve (10) is positioned on described reheating inlet pipeline and/or described reheating water return pipeline, for regulating the cooling water flow on the pipeline of described control valve (10) place.
3. water-cooled cold type air-conditioning equipment according to claim 2, it is characterized in that, also comprise temperature detecting unit (7), before described temperature detecting unit (7) is positioned at described compressor (1) import, for detecting the temperature of the working media entered before described compressor (1).
4. water-cooled cold type air-conditioning equipment according to claim 3, it is characterized in that, also comprise controller, described controller carries out signal with described temperature detecting unit (7) and described control valve (10) and is connected, and the temperature that described controller can detect according to described temperature detecting unit (7) controls the aperture of described control valve (10).
5. water-cooled cold type air-conditioning equipment according to claim 4, it is characterized in that, described controller comprises:
Receiver module, for receiving the temperature signal that described temperature detecting unit (7) sends;
Computing module, for being scaled suction superheat by described temperature signal;
Comparison module, for comparing described suction superheat and the default degree of superheat;
Adjustment module, sends for the comparative result according to described comparison module the signal controlling described control valve (10) aperture to described control valve (10).
6. water-cooled cold type air-conditioning equipment according to claim 5, it is characterized in that, the described default degree of superheat comprises first and presets the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter (4) is Δ T
0=0.5*Te+9.
7., based on a method of operating for the water-cooled cold type air-conditioning equipment as described in any one of claim 1 ~ 6, it is characterized in that, comprising:
Will with the working media heat exchange flowing through described condenser (2) after cooling water introduce described in hot cell (8) again, described in utilization, hot cell (8), to the working media from described evaporimeter (4), heated before entering described compressor (1) again.
8. method of operating according to claim 7, is characterized in that, also comprises:
Water pump (9) and control valve (10) are provided;
The water inlet of hot cell (8) again described in by described water pump (9) cooling water that the delivery port of described condenser (2) is discharged being guided to;
By the aperture controlling described control valve (10) regulate enter described in the cooling water flow of hot cell (8) again.
9. method of operating according to claim 8, is characterized in that, also comprises:
Controller and the temperature detecting unit (7) for detecting the temperature entering working media before described compressor (1) are provided;
Described in the described aperture adjustment by controlling described control valve (10) enters, the operation of the cooling water flow of hot cell (8) comprising again:
Described controller receives the temperature signal that described temperature detecting unit (7) sends, and described temperature signal is scaled suction superheat;
Described controller compares described suction superheat and the default degree of superheat, and sends the signal controlling described control valve (10) aperture to described control valve (10) according to comparative result.
10. method of operating according to claim 9, it is characterized in that, the described default degree of superheat comprises first and presets the degree of superheat and the second default degree of superheat, the minimum of a value of the compressor air suction degree of superheat required when the wherein said first default degree of superheat is described water-cooled cold type air-conditioning equipment safe operation, the described second default degree of superheat is the described first default degree of superheat and preset difference value Δ T
0sum, wherein said preset difference value Δ T
0and the pass between the evaporating temperature Te of described evaporimeter (4) is Δ T
0=0.5*Te+9; Wherein, described controller compares described suction superheat and the default degree of superheat, and the operation sending the signal of control described control valve (10) aperture according to comparative result to described control valve (10) comprises:
When described suction superheat presets the degree of superheat lower than described first, described controller sends the signal increasing described control valve (10) aperture to described control valve (10);
Preset the degree of superheat when described suction superheat is equal to or higher than described first, but when presetting the degree of superheat lower than described second, described controller sends the signal keeping described control valve (10) aperture constant to described control valve (10);
When described suction superheat is equal to or higher than the second default degree of superheat, described controller sends the signal reducing described control valve (10) aperture to described control valve (10).
11. methods of operating according to claim 10, is characterized in that, also comprise:
After described water-cooled cold type air-conditioning equipment start runs, first described control valve (10) is initialized, described control valve (10) aperture is set to minimum of a value;
After the described control valve of initialization (10), when described suction superheat is equal to or higher than the described first default degree of superheat, described controller sends the signal keeping described control valve (10) aperture constant to described control valve (10), otherwise described controller sends the signal increasing described control valve (10) aperture to described control valve (10).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106546029A (en) * | 2016-11-02 | 2017-03-29 | 广东高而美制冷设备有限公司 | A kind of low-temperature enthalpy-increasing system and its method of work |
| CN108954920A (en) * | 2018-08-22 | 2018-12-07 | 珠海格力电器股份有限公司 | The heat exchanger and air conditioner of air conditioner |
| CN109237834A (en) * | 2018-11-19 | 2019-01-18 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN110701691A (en) * | 2019-10-14 | 2020-01-17 | 珠海格力电器股份有限公司 | Fresh air handling unit and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008180423A (en) * | 2007-01-23 | 2008-08-07 | Kansai Electric Power Co Inc:The | Heat pump system |
| CN205066251U (en) * | 2015-10-13 | 2016-03-02 | 珠海格力电器股份有限公司 | Water -cooling cold wind type air conditioning equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008180423A (en) * | 2007-01-23 | 2008-08-07 | Kansai Electric Power Co Inc:The | Heat pump system |
| CN205066251U (en) * | 2015-10-13 | 2016-03-02 | 珠海格力电器股份有限公司 | Water -cooling cold wind type air conditioning equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546029A (en) * | 2016-11-02 | 2017-03-29 | 广东高而美制冷设备有限公司 | A kind of low-temperature enthalpy-increasing system and its method of work |
| CN108954920A (en) * | 2018-08-22 | 2018-12-07 | 珠海格力电器股份有限公司 | The heat exchanger and air conditioner of air conditioner |
| CN109237834A (en) * | 2018-11-19 | 2019-01-18 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN110701691A (en) * | 2019-10-14 | 2020-01-17 | 珠海格力电器股份有限公司 | Fresh air handling unit and control method |
| CN110701691B (en) * | 2019-10-14 | 2023-04-25 | 珠海格力电器股份有限公司 | Fresh air unit and control method |
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| CN105387658B (en) | 2017-12-12 |
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