CN105299771A - Water-cooled air conditioning unit and control method of supercooling degree thereof - Google Patents
Water-cooled air conditioning unit and control method of supercooling degree thereof Download PDFInfo
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- CN105299771A CN105299771A CN201510665470.4A CN201510665470A CN105299771A CN 105299771 A CN105299771 A CN 105299771A CN 201510665470 A CN201510665470 A CN 201510665470A CN 105299771 A CN105299771 A CN 105299771A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004781 supercooling Methods 0.000 title claims abstract description 30
- 238000004378 air conditioning Methods 0.000 title abstract description 6
- 239000003507 refrigerant Substances 0.000 claims abstract description 121
- 238000001816 cooling Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 230000005494 condensation Effects 0.000 claims description 37
- 238000009833 condensation Methods 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009401 outcrossing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a water-cooled air conditioning unit and a control method of supercooling degree of the water-cooled air conditioning unit. The water-cooled air conditioning unit comprises an evaporator, a condenser and a throttling assembly, and further comprises a cooling heat exchanger, wherein before flowing through the throttling assembly, a refrigerant from the condenser exchanges heat with condensed water from the evaporator in the cooling heat exchanger. According to the technical scheme provided by the invention, the low-temperature condensate water from the evaporator is utilized to exchange heat with the refrigerant from the condenser, so that the refrigerant discharged from the condenser is subjected to supercooling treatment, the temperature difference before and after throttling can be effectively reduced, the throttling loss is reduced, and the supercooling degree is increased, thereby being beneficial to improving the refrigerating capacity of the air conditioning unit.
Description
Technical field
The present invention relates to field of air conditioning, particularly the control method of the degree of supercooling of a kind of Water-cooling type air conditioner unit and Water-cooling type air conditioner unit.
Background technology
As everyone knows, restriction loss is main relevant with the temperature difference before and after throttling, and the temperature difference is less, and restriction loss is fewer; Degree of supercooling increase can make refrigerating capacity rise.At present, the method controlling air-conditioner degree of supercooling mainly contains following two kinds: 1) adopt aftercooler, namely utilizes cooling water first to cool from condenser refrigerant out in aftercooler, enters condenser afterwards again and carry out condensation heat absorption; 2) adopt supercooling tube, several heat exchanger tubes are set up in the bottom namely inside condenser, for carrying out cold treatment to refrigerant.
But, these two kinds of each defectiveness of method.For the 1st) kind method, when adopting aftercooler, need cooling water first to cool from condenser refrigerant out in aftercooler, cooling water heat absorption heats up and will certainly cause the rising of condensation temperature, unfavorable to unit efficiency like this; If keep same condensation temperature, need to strengthen cooling water flow, cooling water system energy consumption will be increased like this, be unfavorable for whole air-conditioner system energy consumption.For the 2nd) kind method, adopt supercooling tube can increase condenser stringing quantity, and bad control degree of supercooling, be unfavorable for that heat exchanger tube gives full play to heat exchange function, the increase of heat exchanger tube also can cause cost significantly to rise.Therefore, be necessary that the above-mentioned defect for existing in prior art is improved.
Summary of the invention
The invention provides the control method of the degree of supercooling of a kind of Water-cooling type air conditioner unit and Water-cooling type air conditioner unit, increase and the higher technical problem of cost to solve system energy consumption in prior art.
To achieve these goals, according to a first aspect of the invention, provide a kind of Water-cooling type air conditioner unit, comprise evaporimeter, condenser and orifice union, described Water-cooling type air conditioner unit also comprises cooling heat exchanger, from the refrigerant of described condenser before flowing through described orifice union, first in described cooling heat exchanger, carry out heat exchange with the condensed water from described evaporimeter.
Further, described evaporimeter has the drip tray for holding condensed water, from the refrigerant of described condenser before flowing through described orifice union, first in described cooling heat exchanger, carries out heat exchange with the condensed water from described drip tray.
Further, described drip tray has outlet, and described cooling heat exchanger has condensing water inlet, is connected between described outlet and described condensing water inlet by condensate draining pipe.
Further, described cooling heat exchanger also has condensation-water drain, refrigerant inlet and refrigerant exit, and the aperture of described condensation-water drain is controlled by opening adjustment mechanism.
Further, described Water-cooling type air conditioner unit also comprises the temperature sensor of the refrigerant temperature for measuring described refrigerant exit, when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than predetermined value, described opening adjustment mechanism reduces the aperture of described condensation-water drain, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value.
Further, described Water-cooling type air conditioner unit also comprises the temperature sensor of the refrigerant temperature for measuring described refrigerant exit, when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than predetermined value, described opening adjustment mechanism reduced the n% of the aperture of described condensation-water drain every m minute, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value; Wherein, 1≤m≤3,2≤n≤7.
According to a second aspect of the invention, provide a kind of control method of degree of supercooling of Water-cooling type air conditioner unit, described Water-cooling type air conditioner unit comprises evaporimeter, condenser, orifice union and cooling heat exchanger, described control method comprises: first, makes the refrigerant from described condenser in described cooling heat exchanger, carry out heat exchange with the condensed water from described evaporimeter; Then, make to flow through described orifice union through changing heat treated refrigerant.
Further, described cooling heat exchanger has condensing water inlet, condensation-water drain, refrigerant inlet and refrigerant exit, described control method also comprises: the aperture regulating described condensation-water drain, is less than predetermined value with the difference of the refrigerant temperature making the condensation temperature of described refrigerant and described refrigerant exit.
Further, described control method also comprises: when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than described predetermined value, reduce the aperture of described condensation-water drain, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value.
Further, described control method also comprises: when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than described predetermined value, the n% of the aperture of described condensation-water drain is reduced, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value every m minute; Wherein, 1≤m≤3,2≤n≤7.
Apply technical scheme of the present invention, the cryogenic condensation water utilizing flash-pot carries out heat exchange with the refrigerant carrying out condenser, thus cold treatment was carried out to the refrigerant that condenser is discharged, effectively can reduce the temperature difference before and after throttling, reduce restriction loss, and add degree of supercooling, thus be conducive to the refrigerating capacity promoting air-conditioner set.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and 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 layout schematic diagram of the Water-cooling type air conditioner unit according to the embodiment of the present invention;
Fig. 2 is the enlarged diagram at A place in Fig. 1;
Fig. 3 is the heat transfer process pressure-enthalpy chart according to the embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In order to solve the defect that prior art exists, the invention provides a kind of Water-cooling type air conditioner unit, comprise evaporimeter, condenser and orifice union, described Water-cooling type air conditioner unit also comprises cooling heat exchanger, from the refrigerant of described condenser before flowing through described orifice union, first in described cooling heat exchanger, carry out heat exchange with the condensed water from described evaporimeter.Correspondingly, present invention also offers a kind of control method of degree of supercooling of Water-cooling type air conditioner unit.
According to technical scheme provided by the invention, the cryogenic condensation water utilizing flash-pot carries out heat exchange with the refrigerant carrying out condenser, thus cold treatment was carried out to the refrigerant that condenser is discharged, effectively can reduce the temperature difference before and after throttling, reduce restriction loss, and add degree of supercooling, thus be conducive to the refrigerating capacity promoting air-conditioner set.
Fig. 1 is the layout schematic diagram of the Water-cooling type air conditioner unit according to the embodiment of the present invention, and Fig. 2 is the enlarged diagram at A place in Fig. 1.As depicted in figs. 1 and 2, in one embodiment of the invention, provide a kind of Water-cooling type air conditioner unit, comprise blower fan 1, current divider 2, motor 3 and compressor 4.
Described Water-cooling type air conditioner unit also comprises orifice union 5, cooling heat exchanger 6, condenser 8 and evaporimeter 11.Wherein, cooling heat exchanger 6 is arranged between condenser 8 and orifice union 5.Condenser 8 adopts Shell-tube Condenser.Certainly, condenser 8 also can be other various forms of condensers.
Evaporimeter 11 has the drip tray 10 for holding condensed water.Drip tray 10 has outlet, and cooling heat exchanger 6 has condensing water inlet and condensation-water drain.One end of condensate draining pipe 9 is connected to the outlet of drip tray 10, and the other end is connected to the condensing water inlet of cooling heat exchanger 6, thus is delivered in cooling heat exchanger 6 by the condensed water in drip tray 10.
Cooling heat exchanger 6 also has refrigerant inlet and refrigerant exit.As shown in Figure 1, the refrigerant of discharging from condenser 8 is by the refrigerant inlet of pipeline flow-direction cooling heat exchanger 6, then in cooling heat exchanger 6, heat exchange is carried out with the condensed water from drip tray 10, refrigerant after heat exchange process flows to orifice union 5 by the refrigerant exit of cooling heat exchanger 6 again, finally flows to current divider 2.Condensed water after heat exchange is then discharged by the condensation-water drain of cooling heat exchanger 6, such as directly under be discharged in the external environment condition of off-premises station.
Thus, by increasing cooling heat exchanger 6 in air-conditioner set, the cryogenic condensation water utilizing flash-pot 11 carries out heat exchange with the refrigerant carrying out condenser 8, thus cold treatment was carried out to the refrigerant that condenser 8 is discharged, effectively can reduce the temperature difference before and after throttling, reduce restriction loss, and add degree of supercooling, thus be conducive to the refrigerating capacity promoting air-conditioner set.Meanwhile, because condensed water temperature after heat absorption raises, the difficult problem of insulation of condensate water discharging system also effectively can be solved.
Fig. 3 is the heat transfer process pressure-enthalpy chart according to the embodiment of the present invention, also, utilizes the pressure enthalpy change figure that the cooling heat exchanger of the embodiment of the present invention carries out in the process of heat exchange.
In figure 3, ordinate lgp represents pressure, and abscissa H represents specific enthalpy, P
0represent evaporating pressure, T
0represent evaporating temperature, P
krepresent condensing pressure, T
krepresent condensation temperature, Δ t
rrepresent degree of supercooling, Δ q
0represent evaporator heat exchange amount changing value, 100 represent compressor air suction point, 200 represent compressor air-discharging point (condenser enters a little), 300 represent condensator outlet (cooling heat exchanger import), 3 ' represents cooling heat exchanger outlet, 400 represent evaporator, and 4 ' represents cooling heat exchanger outlet.
As can be seen from Figure 3, when pressure is constant, add Δ t from condensator outlet to the refrigerant degree of supercooling in cooling heat exchanger exit
r, make the temperature difference before and after throttling reduce Δ t
r, thus make refrigerating capacity add Δ q
0.
Fig. 2 is the enlarged diagram at A place in Fig. 1.As shown in Figure 2, described Water-cooling type air conditioner unit also comprises electric control valve 7, and it is arranged on the condensation-water drain place of cooling heat exchanger 6.Electric control valve 7 for the aperture of the condensation-water drain of controlled cooling model heat exchanger 6, thus controls the condensation water quantity flowing out cooling heat exchanger 6.Certainly, except electric control valve, other various forms of opening adjustment mechanisms also can be adopted.
The all right set temperature sensor of described Water-cooling type air conditioner unit, for immediately measuring the refrigerant temperature t of the refrigerant exit of cooling heat exchanger 6
c.As the condensation temperature t of refrigerant
kwith the refrigerant temperature t of refrigerant exit
cdifference be less than predetermined value t
stime, the aperture that electric control valve 7 reduces condensation-water drain can be controlled, until the condensation temperature t of refrigerant
kwith the refrigerant temperature t of refrigerant exit
cdifference equal described predetermined value t
s, just stop the aperture reducing condensation-water drain.
Due to the degree of supercooling t of refrigerant
sthe condensation temperature t of=refrigerant
kthe refrigerant temperature t of the refrigerant exit of-cooling heat exchanger
c.Therefore, by arranging electric control valve 7, regulate the aperture of the condensation-water drain of cooling heat exchanger with the condensation water quantity of control and participate in heat exchange, condensed water is avoided to discharge (such as under gravity) fast and fully do not participate in heat transfer process, thus, can ensure that refrigerant degree of supercooling is more than or equal to predetermined value t
s, reach the object automatically controlling refrigerant degree of supercooling.
Preferably, as the condensation temperature t of refrigerant
kwith the refrigerant temperature t of refrigerant exit
cdifference be less than predetermined value t
stime, electric control valve 7 reduced the aperture of condensation-water drain n% every m minute can be controlled, until the condensation temperature t of refrigerant
kwith the refrigerant temperature t of refrigerant exit
cdifference equal described predetermined value t
s, just stop the aperture reducing described condensation-water drain.
The scope of aforementioned value m can between 1 to 3, i.e. 1≤m≤3, is preferably 2.The scope of aforementioned value n can between 2 to 7, i.e. 2≤n≤7, are preferably 5.
Thus, by reducing a certain proportion of condensation-water drain aperture at regular intervals, the control logic of electric control valve 7 can be simplified, and appropriateness reduces the control accuracy of electric control valve 7, relatively low to the requirement of the software and hardware of working control process, thus be conducive to reducing costs while realizing degree of supercooling control objectives.
To sum up, by technical scheme of the present invention, the advantage of the cryogenic condensation water of flash-pot fully utilizes in the future, namely the condensation cryogenic condensation water increasing a set of configuration flash-pot in future carries out heat exchange with the refrigerant carrying out condenser, carry out crossing cold treatment to the refrigerant of condensator outlet, effectively can reduce the temperature difference before and after throttling like this, add the degree of supercooling of refrigerant, realize the effect promoting refrigerating capacity; After condensed water heat absorption simultaneously, temperature raises, and effectively can solve the problem of an insulation difficult problem for condensate water discharging system.When cost is almost constant, significantly can promote refrigerating capacity and the efficiency of unit, the economic benefit of air-conditioner set is increased dramatically.
Further, by the design adopting this kind of degree of supercooling to control, compared with the control mode of routine, the beneficial effect reached is as follows:
1) when not having an impact to cooling water system, being fully beneficial to the advantage of cryogenic condensation water, crossing cold effect highly significant.
2) when cost has almost no change (only increase cooling heat exchanger and electric control valve), reach that degree of supercooling is controlled, the refrigerating capacity that increases unit and the effect promoting unit efficiency.
3) insulation layer thickness of condensate draining pipe can obtain effectively thinning, effectively reduces cost.
Technique scheme solves Problems existing when adopting aftercooler, namely needs to strengthen cooling water flow, thus causes the problem that cooling water system operation energy consumption rises; Or cooling water flow is constant, because of cooling water first inside aftercooler heat absorption cause unit condensation temperature to rise, and then the problem causing efficiency to decline and the uncontrollable problem of degree of supercooling.
In addition, technique scheme also solves Problems existing when adopting supercooling tube, namely needs to increase heat exchanger tube and is specifically designed to cold treatment, cause cost to increase and the uncontrollable problem of degree of supercooling.
Describe Water-cooling type air conditioner unit of the present invention according to embodiment above, but this Water-cooling type air conditioner unit is not limited in the parts described in embodiment and/or annexation, such as, condenser is not limited to the Shell-tube Condenser shown in embodiment; Drip tray is parts not necessarily, as long as can in the future cause cooling heat exchanger and carry out heat exchange by the condensed water of flash-pot; Except adopting electric control valve, also can adopt the various opening adjustment mechanism that can control aperture; The number range of m and n can consider control objectives and realize cost adjustment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Water-cooling type air conditioner unit, comprise evaporimeter, condenser and orifice union, it is characterized in that, described Water-cooling type air conditioner unit also comprises cooling heat exchanger, from the refrigerant of described condenser before flowing through described orifice union, first in described cooling heat exchanger, carry out heat exchange with the condensed water from described evaporimeter.
2. Water-cooling type air conditioner unit according to claim 1, it is characterized in that, described evaporimeter has the drip tray for holding condensed water, from the refrigerant of described condenser before flowing through described orifice union, first in described cooling heat exchanger, carry out heat exchange with the condensed water from described drip tray.
3. Water-cooling type air conditioner unit according to claim 2, is characterized in that, described drip tray has outlet, and described cooling heat exchanger has condensing water inlet, is connected between described outlet and described condensing water inlet by condensate draining pipe.
4. Water-cooling type air conditioner unit according to any one of claim 1 to 3, is characterized in that, described cooling heat exchanger also has condensation-water drain, refrigerant inlet and refrigerant exit, and the aperture of described condensation-water drain is controlled by opening adjustment mechanism.
5. Water-cooling type air conditioner unit according to claim 4, it is characterized in that, described Water-cooling type air conditioner unit also comprises the temperature sensor of the refrigerant temperature for measuring described refrigerant exit, when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than predetermined value, described opening adjustment mechanism reduces the aperture of described condensation-water drain, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value.
6. Water-cooling type air conditioner unit according to claim 4, it is characterized in that, described Water-cooling type air conditioner unit also comprises the temperature sensor of the refrigerant temperature for measuring described refrigerant exit, when the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than predetermined value, described opening adjustment mechanism reduced the n% of the aperture of described condensation-water drain every m minute, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value; Wherein, 1≤m≤3,2≤n≤7.
7. a control method for the degree of supercooling of Water-cooling type air conditioner unit, is characterized in that, described Water-cooling type air conditioner unit comprises evaporimeter, condenser, orifice union and cooling heat exchanger, and described control method comprises:
First, the refrigerant from described condenser is made in described cooling heat exchanger, to carry out heat exchange with the condensed water from described evaporimeter;
Then, make to flow through described orifice union through changing heat treated refrigerant.
8. control method according to claim 7, is characterized in that, described cooling heat exchanger has condensing water inlet, condensation-water drain, refrigerant inlet and refrigerant exit, and described control method also comprises:
Regulate the aperture of described condensation-water drain, be less than predetermined value with the difference of the refrigerant temperature making the condensation temperature of described refrigerant and described refrigerant exit.
9. control method according to claim 8, is characterized in that, described control method also comprises:
When the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than described predetermined value, reduce the aperture of described condensation-water drain, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value.
10. control method according to claim 8, is characterized in that, described control method also comprises:
When the difference of the condensation temperature of described refrigerant and the refrigerant temperature of described refrigerant exit is less than described predetermined value, the n% of the aperture of described condensation-water drain is reduced, until the difference of the refrigerant temperature of the condensation temperature of described refrigerant and described refrigerant exit equals described predetermined value every m minute; Wherein, 1≤m≤3,2≤n≤7.
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| CN201510665470.4A CN105299771B (en) | 2015-10-14 | 2015-10-14 | Water-cooled air conditioning unit and control method of supercooling degree thereof |
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| CN201510665470.4A CN105299771B (en) | 2015-10-14 | 2015-10-14 | Water-cooled air conditioning unit and control method of supercooling degree thereof |
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| CN105299771B CN105299771B (en) | 2017-12-19 |
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| CN109373644A (en) * | 2018-11-30 | 2019-02-22 | 青岛海尔空调电子有限公司 | Idle call supercooling apparatus and air-conditioning |
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