CN105357939A - Electric cabinet temperature humidity control system and method - Google Patents
Electric cabinet temperature humidity control system and method Download PDFInfo
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- CN105357939A CN105357939A CN201510887946.9A CN201510887946A CN105357939A CN 105357939 A CN105357939 A CN 105357939A CN 201510887946 A CN201510887946 A CN 201510887946A CN 105357939 A CN105357939 A CN 105357939A
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- temperature
- regulator cubicle
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- humidity
- expansion valve
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/20554—Forced ventilation of a gaseous coolant
- H05K7/2059—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
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- Aviation & Aerospace Engineering (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses an electric cabinet temperature humidity control system and method, and relates to the field of electrical equipment. The system comprises an evaporator, an expansion valve and an expansion valve control device, wherein the expansion valve is arranged between the evaporator and a refrigerant reservoir, the expansion valve control device and the expansion valve are electrically connected for adjusting the openness of the expansion valve, and the evaporator can carry out heat exchange with air inside an electric cabinet. According to the invention, the temperature and the humidity of the electric cabinet can be controlled by use of the evaporator, the temperature inside the electric cabinet can be reduced, hot air inside the electric cabinet can also be condensed, condensed water is discharged out of the electric cabinet, the temperature and the humidity of the electric cabinet are effectively reduced, both the temperature and the humidity are adjusted, and a relative constant-temperature constant-humidity environment is formed in the electric cabinet. Besides, through adjusting the flow of a refrigerant, the humiture control intensity of the electric cabinet can be adjusted.
Description
Technical field
The present invention relates to electrical equipment, particularly a kind of regulator cubicle temperature humidity control system and method.
Background technology
Temperature and humidity in regulator cubicle remains within rational scope very important to the reliability and life-span that ensure regulator cubicle.Be dispersed with many electric elements in regulator cubicle, if electrically in-cabinet temperature is too high, gently then cause components and parts derate to use, heavy then cause components and parts excess temperature to be damaged, system cannot normally work; If regulator cubicle humidity is too high, then will cause occurring condensation in cabinet, and cause various electric elements to damage because of electrochemical corrosion on the one hand, affect reliability and the life-span of regulator cubicle, the electrical connection short circuit caused because of condensation on the other hand may cause system works abnormal, even leads to a disaster.
Current regulator cubicle cooling adopts wind-cooling heat dissipating mode mostly, the hot-air extraction in regulator cubicle is gone to reach heat radiation object by fan.Regulator cubicle dehumidifying adopts electric heater to continue the method be energized mostly, and the defect of the method is electric heater continuous heating, affects cabinet cooling, and cooling and dehumidifying cannot be taken into account.
Summary of the invention
An embodiment of the present invention technical problem to be solved is the cooling of regulator cubicle and the problem that cannot take into account that dehumidifies.
According to an aspect of the embodiment of the present invention, a kind of regulator cubicle temperature humidity control system is provided, comprises: evaporator; Expansion valve; With expansion valve control device; Wherein, described expansion valve is arranged between described evaporator and refrigerant reservoir, and described expansion valve control device is electrically connected with described expansion valve, and for regulating the aperture of described expansion valve, described evaporator can carry out heat exchange with the air of regulator cubicle inside.
In one embodiment, described system also comprises: Temperature and Humidity Control unit; Wherein, described Temperature and Humidity Control unit is electrically connected with described expansion valve control device, for according to the temperature and humidity of regulator cubicle inside to described expansion valve control device transmission of control signals, described expansion valve control device is used for the aperture regulating described expansion valve according to the control signal of described Temperature and Humidity Control unit transmission.
In one embodiment, described Temperature and Humidity Control unit is used for calculating solidifying dew point temperature according to the temperature and humidity of regulator cubicle inside, if solidifying dew point temperature is higher than preset temperature, generate control signal according to the temperature of regulator cubicle inside and the difference of solidifying dew point temperature and be transferred to described expansion valve control device, if solidifying dew point temperature, lower than preset temperature, generates control signal according to the temperature of regulator cubicle inside and the difference of preset temperature and is transferred to described expansion valve control device.
In one embodiment, described system also comprises: Temperature and Humidity unit; Wherein, described Temperature and Humidity unit is electrically connected with described Temperature and Humidity Control unit, for detecting the temperature and humidity of regulator cubicle inside, and is transferred to described Temperature and Humidity Control unit.
In one embodiment, described Temperature and Humidity unit comprises at least one temperature sensor and at least one humidity sensor, and each temperature sensor and each humidity sensor are distributed in each control point place of regulator cubicle inside.
In one embodiment, described system also comprises draining valve, discharges regulator cubicle for the condensed water produced by described evaporator.
In one embodiment, described system also comprises fan, and described evaporator is positioned on the wind path of described fan formation.
In one embodiment, described fan comprises first fan of drying in regulator cubicle and the second fan from exhausting in regulator cubicle, and described evaporator is positioned on the wind path that described first fan and described second fan formed.
In one embodiment, described first fan and described second fan are separately fixed at the two side of regulator cubicle, and described evaporator is fixed on the sidewall with the regulator cubicle of described second fan homonymy, and is positioned at the below of described second fan.
According to another aspect of the embodiment of the present invention, provide a kind of regulator cubicle temperature humidity control method, described method comprises: the aperture of variable expansion valve, to control the flow of the cold-producing medium entering evaporator; Evaporator utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and makes the hot-air condensation of regulator cubicle inside, and condensed water is discharged regulator cubicle.
In one embodiment, described method also comprises: utilize fan to form wind path in regulator cubicle inside, be arranged on by described evaporator on the wind path of described fan formation.
In one embodiment, described fan comprises the first fan and the second fan, and described method comprises: the first fan is dried in regulator cubicle, and the damp-heat air of horizontal direction in regulator cubicle is blowed to evaporator; Evaporator utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and the damp-heat air condensation that the first fan is blown, condensed water is discharged regulator cubicle; Cold dry air around evaporator is upwards flowed by the draft effect of the second fan of the side of being located thereon, and discharges regulator cubicle, to reduce the humiture of vertical direction in regulator cubicle by the second fan.
In one embodiment, the aperture of described variable expansion valve comprises: calculate solidifying dew point temperature according to the temperature and humidity of regulator cubicle inside; If solidifying dew point temperature is higher than preset temperature, according to the aperture of the temperature of regulator cubicle inside and the difference variable expansion valve of solidifying dew point temperature; If solidifying dew point temperature is lower than preset temperature, according to the aperture of the temperature of regulator cubicle inside and the difference variable expansion valve of preset temperature.
The present invention utilizes the temperature and humidity of evaporator to regulator cubicle to control, both the temperature of regulator cubicle inside can have been reduced, also the hot-air condensation of regulator cubicle inside can be made, condensed water discharges regulator cubicle, thus effectively reduce the temperature and humidity of regulator cubicle, take into account the adjustment of temperature and humidity, in regulator cubicle, form the environment of relative constant temperature and humidity.Further, by regulating the flow of cold-producing medium, the adjustment of regulator cubicle Temperature and Humidity Control dynamics can be realized.In addition, the present invention also proposes and achieves according to the internal environment of regulator cubicle intelligently to the scheme that humiture regulates.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a regulator cubicle temperature humidity control system of the present invention embodiment.
Fig. 2 is the structural representation of another embodiment of regulator cubicle temperature humidity control system of the present invention.
Fig. 3 is the control procedure schematic diagram of Temperature and Humidity Control unit of the present invention.
Fig. 4 is the structural representation of another embodiment of regulator cubicle temperature humidity control system of the present invention.
Fig. 5 A and Fig. 5 B is front view and the end view of wherein a kind of position relationship of fan and evaporator.
Fig. 6 is the schematic flow sheet of a regulator cubicle temperature humidity control method of the present invention embodiment.
Fig. 7 is the schematic flow sheet of another embodiment of regulator cubicle temperature humidity control method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
In order to solve regulator cubicle cooling and the problem that cannot take into account that dehumidifies, the present invention is proposed.
Fig. 1 is the structural representation of a regulator cubicle temperature humidity control system of the present invention embodiment.
As shown in Figure 1, the regulator cubicle temperature humidity control system of the present embodiment comprises: evaporator 10; Expansion valve 20; With expansion valve control device 30.Wherein, expansion valve 20 is arranged between evaporator 10 and refrigerant reservoir, expansion valve control device 30 is electrically connected with expansion valve 20, for the aperture of variable expansion valve 20, such as can be carried out the aperture of variable expansion valve 20 by the duty ratio of variable expansion valve 20 drive circuit, thus control the flow entering the cold-producing medium of evaporator 10.In the present invention, electrical connection comprises electrical connection or/and the signal of telecommunication is communicated with, and the signal of telecommunication is communicated with and comprises wired and wireless mode of communicating.Evaporator 10 can carry out heat exchange with the air of regulator cubicle inside, and evaporator 10 utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and makes the hot-air condensation of regulator cubicle inside, and condensed water is discharged regulator cubicle.Condensed water can be discharged by draining valve, and draining valve can be arranged on the below of evaporator 10, advantageously in the discharge of condensed water.The Temperature and Humidity Control scheme of evaporator effectively can reduce the temperature and humidity of regulator cubicle, takes into account the adjustment of temperature and humidity, forms the environment of relative constant temperature and humidity in regulator cubicle.Further, by regulating the flow of cold-producing medium, the adjustment of regulator cubicle Temperature and Humidity Control dynamics can be realized.
The present invention also proposes and achieves a kind of internal environment according to regulator cubicle intelligently to the scheme that humiture regulates, and illustrates below.
Fig. 2 is the structural representation of another embodiment of regulator cubicle temperature humidity control system of the present invention.
As shown in Figure 2, on basis embodiment illustrated in fig. 1, the regulator cubicle temperature humidity control system of the present embodiment also comprises: Temperature and Humidity Control unit 40.Wherein, Temperature and Humidity Control unit 40 is electrically connected with expansion valve control device 30, for according to the temperature and humidity of regulator cubicle inside to expansion valve control device 30 transmission of control signals, the aperture of control signal variable expansion valve 20 of expansion valve control device 30 for transmitting according to Temperature and Humidity Control unit 40.Thus realize regulating intelligently humiture according to the internal environment of regulator cubicle.
Exemplarily, as shown in Figure 3, the control procedure of Temperature and Humidity Control unit 40 is as follows:
S302, temperature and humidity and solidifying dew point temperature are certain function, therefore can calculate solidifying dew point temperature according to the temperature and humidity of regulator cubicle inside.
Exemplary, solidifying dew point temperature can according to function by calculating.In order to simplify the complexity of calculating, the present invention also proposes a kind of condensation point calculating method of simplification.Concrete, when humidity is 90%, solidifying dew point temperature is probably low than room temperature about 2 DEG C; When humidity is 80%, solidifying dew point temperature is probably low than room temperature about 4 DEG C; When humidity is 70%, solidifying dew point temperature is probably low than room temperature about 6 DEG C; When humidity is 60%, solidifying dew point temperature is probably low than room temperature about 8 DEG C.Condensation point can be calculated more quickly by the computational methods of this simplification, and the requirement to device computing capability can be reduced.
S304, judges that whether solidifying dew point temperature is higher than preset temperature.
At the control initial stage, in-cabinet temperature is higher, also higher according to the solidifying dew point temperature that the temperature and humidity in cabinet calculates, and often higher than preset temperature, if solidifying dew point temperature is higher than preset temperature, performs S306, is undertaken lowering the temperature and dehumidifying by evaporator 10.If solidifying dew point temperature, lower than preset temperature, performs S308, if solidifying dew point temperature equals preset temperature substantially, then current controlled condition can not be changed.Thus make the ambient temperature in regulator cubicle substantially maintain preset temperature, and humidity is also controlled in certain limit and cannot produces condensation.
S306, if solidifying dew point temperature is higher than preset temperature, calculates the temperature of regulator cubicle inside and the difference of solidifying dew point temperature, generates control signal according to the temperature of regulator cubicle inside and the difference of solidifying dew point temperature.Then S310 is performed.
Wherein, PI (proportionalintegral, ratio and integration) regulative mode can be adopted to generate control signal based on difference.Such as, adopt pi regulator, the ratio (P) of the difference of the temperature of regulator cubicle inside and solidifying dew point temperature and integration (I) are formed controlled quentity controlled variable by linear combination, controlled device is controlled.
S308, if solidifying dew point temperature is lower than preset temperature, calculates the temperature of regulator cubicle inside and the difference of preset temperature, generates control signal according to the temperature of regulator cubicle inside and the difference of preset temperature.Then S310 is performed.
Similar with S306, S308 can adopt pi regulator, the ratio (P) of the temperature of regulator cubicle inside and the difference of preset temperature and integration (I) is formed controlled quentity controlled variable by linear combination, controls controlled device.
S310, control signal is transferred to expansion valve control device 30, with the aperture of variable expansion valve 20, controls the flow entering the cold-producing medium of evaporator 10.
Further, the execution S302 ~ S310 that can circulate carries out Temperature and Humidity Control, make the ambient temperature in regulator cubicle substantially maintain preset temperature, and humidity is also controlled in certain limit and cannot produces condensation.
Above-mentioned Temperature and Humidity Control scheme adopts closed-loop control, realizes humiture regulate intelligently with the internal environment of regulator cubicle by signal feedback.
The Temperature and Humidity Control unit 40 realizing above-mentioned control procedure can comprise comparing unit, difference computational unit, pi regulator.Wherein, comparing unit is used for relatively more solidifying dew point temperature and preset temperature, and exports to difference computational unit.If difference computational unit is used for solidifying dew point temperature higher than preset temperature, calculate the temperature of regulator cubicle inside and the difference of solidifying dew point temperature, and export to pi regulator, if solidifying dew point temperature is lower than preset temperature, calculate the temperature of regulator cubicle inside and the difference of preset temperature, and export to pi regulator.The input ratio (P) of difference and integration (I) are exported by linear combination formation controlled quentity controlled variable by pi regulator.
As shown in Figure 2, the regulator cubicle temperature humidity control system of the present embodiment also comprises: Temperature and Humidity unit 50.Temperature and Humidity unit 50 comprises at least one temperature sensor and at least one humidity sensor, 2-4 transducer is such as set, number of sensors can be arranged as required, each temperature sensor and each humidity sensor are distributed in each control point place of regulator cubicle inside, thus can realize the Temperature and Humidity Control to zones of different in regulator cubicle.Control point can be such as the strict place of in-cabinet temperature and humidity requirement.Wherein, Temperature and Humidity unit 50 is electrically connected with Temperature and Humidity Control unit 40, can detect the temperature and humidity of regulator cubicle inside in real time, and be transferred to Temperature and Humidity Control unit 40.Thus realize regulating in real time humiture according to the current up-to-date internal environment of regulator cubicle.
The space of regulator cubicle is as a rule all relatively closed, therefore, in order to improve the effect of cooling and dehumidifying further, as shown in Figure 4, can also at regulator cubicle temperature humidity set-up of control system fan 60, air in regulator cubicle is circulated, and evaporator 10 can be arranged on the wind path of fan 60 formation, thus improves the effect of cooling and dehumidifying.Fan 60 can be that fan blowing is or/and extractor fan, preferably, the present invention arranges first fan 602 of drying in regulator cubicle and the second fan 604 from exhausting in regulator cubicle, evaporator 10 is arranged on the wind path of the first fan 602 and the formation of the second fan 604, thus the circulation of air in quickening cabinet, improve the effect of cooling and dehumidifying further.
Fig. 5 A and Fig. 5 B is front view and the end view of wherein a kind of position relationship of fan and evaporator.As fig. 5 a and fig. 5b, the first fan 602 and the second fan 604 are separately fixed at the two side of regulator cubicle, and evaporator 10 is fixed on the sidewall with the regulator cubicle of the second fan 604 homonymy, and is positioned at the below of the second fan 604.The installing port of evaporator 10 can be oppositely arranged with the blowing mouth of the first fan 602, highly substantially identical.The course of work is, first fan 602 is dried in regulator cubicle, the damp-heat air of horizontal direction in regulator cubicle is blowed to evaporator 10, evaporator 10 utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and by damp-heat air condensation that the first fan 602 blows, condensed water is discharged regulator cubicle, the humiture of horizontal direction in regulator cubicle can be reduced; Cold dry air around evaporator 10 is upwards flowed by the draft effect of the second fan 604 of the side of being located thereon, and discharges regulator cubicle by the second fan 604, to reduce the humiture of vertical direction in regulator cubicle.
The present invention also proposes a kind of regulator cubicle temperature humidity control method, and as shown in Figure 6, the method comprises:
S602, regulates the aperture of expansion 20 valve, to control the flow of the cold-producing medium entering evaporator 10.Wherein, the concrete grammar of variable expansion valve aperture can the description of reference diagram 3 embodiment.
S604, evaporator 10 utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and makes the hot-air condensation of regulator cubicle inside, and condensed water is discharged regulator cubicle.
As shown in Figure 7, the method also comprises: S703, utilizes fan to form wind path in regulator cubicle inside, is arranged on by evaporator 10 on the wind path of fan formation.Preferably, arrange first fan 602 of drying in regulator cubicle and the second fan 604 from exhausting in regulator cubicle, evaporator 10 is arranged on the wind path that the first fan 602 and the second fan 604 formed.Evaporator 10 coordinates the course of work controlled regulator cubicle humiture as follows with fan: the first fan 602 is dried in regulator cubicle, and the damp-heat air of horizontal direction in regulator cubicle is blowed to evaporator 10; Evaporator 10 utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and by the damp-heat air condensation that the first fan 602 blows, condensed water is discharged regulator cubicle; Cold dry air around evaporator 10 is upwards flowed by the draft effect of the second fan 604 of the side of being located thereon, and discharges regulator cubicle by the second fan 604, to reduce the humiture of vertical direction in regulator cubicle.
The present invention utilizes the temperature and humidity of evaporator to regulator cubicle to control, both the temperature of regulator cubicle inside can have been reduced, also the hot-air condensation of regulator cubicle inside can be made, condensed water discharges regulator cubicle, thus effectively reduce the temperature and humidity of regulator cubicle, take into account the adjustment of temperature and humidity, in regulator cubicle, form the environment of relative constant temperature and humidity.Further, by regulating the flow of cold-producing medium, the adjustment of regulator cubicle Temperature and Humidity Control dynamics can be realized.In addition, the present invention also proposes and achieves according to the internal environment of regulator cubicle intelligently to the scheme that humiture regulates.Whole kind of refrigeration cycle of the present invention is the cold-producing medium introduced by external system, enters cold-producing medium memory, then enters evaporator by expansion valve, and the cold-producing medium after evaporation endothermic flows in external system again.Described external system comprises the conventional air-conditioning such as compressor, condenser refrigeration system component.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, 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 (13)
1. a regulator cubicle temperature humidity control system, is characterized in that, comprising:
Evaporator;
Expansion valve; With
Expansion valve control device;
Wherein, described expansion valve is arranged between described evaporator and refrigerant reservoir, and described expansion valve control device is electrically connected with described expansion valve, and for regulating the aperture of described expansion valve, described evaporator can carry out heat exchange with the air of regulator cubicle inside.
2. the system as claimed in claim 1, is characterized in that, also comprises:
Temperature and Humidity Control unit;
Wherein, described Temperature and Humidity Control unit is electrically connected with described expansion valve control device, for according to the temperature and humidity of regulator cubicle inside to described expansion valve control device transmission of control signals, described expansion valve control device is used for the aperture regulating described expansion valve according to the control signal of described Temperature and Humidity Control unit transmission.
3. system as claimed in claim 2, is characterized in that,
Described Temperature and Humidity Control unit is used for calculating solidifying dew point temperature according to the temperature and humidity of regulator cubicle inside, if solidifying dew point temperature is higher than preset temperature, generate control signal according to the temperature of regulator cubicle inside and the difference of solidifying dew point temperature and be transferred to described expansion valve control device, if solidifying dew point temperature, lower than preset temperature, generates control signal according to the temperature of regulator cubicle inside and the difference of preset temperature and is transferred to described expansion valve control device.
4. system as claimed in claim 2, is characterized in that, also comprise:
Temperature and Humidity unit;
Wherein, described Temperature and Humidity unit is electrically connected with described Temperature and Humidity Control unit, for detecting the temperature and humidity of regulator cubicle inside, and is transferred to described Temperature and Humidity Control unit.
5. system as claimed in claim 4, is characterized in that, described Temperature and Humidity unit comprises at least one temperature sensor and at least one humidity sensor, and each temperature sensor and each humidity sensor are distributed in each control point place of regulator cubicle inside.
6. the system as claimed in claim 1, is characterized in that, also comprises:
Draining valve, discharges regulator cubicle for the condensed water produced by described evaporator.
7. the system as described in any one of claim 1-6, is characterized in that, also comprises fan, and described evaporator is positioned on the wind path of described fan formation.
8. system as claimed in claim 7, is characterized in that, described fan comprises first fan of drying in regulator cubicle and the second fan from exhausting in regulator cubicle, and described evaporator is positioned on the wind path that described first fan and described second fan formed.
9. system as claimed in claim 8, it is characterized in that, described first fan and described second fan are separately fixed at the two side of regulator cubicle, and described evaporator is fixed on the sidewall with the regulator cubicle of described second fan homonymy, and is positioned at the below of described second fan.
10. a regulator cubicle temperature humidity control method, is characterized in that, described method comprises:
The aperture of variable expansion valve, to control the flow of the cold-producing medium entering evaporator;
Evaporator utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and makes the hot-air condensation of regulator cubicle inside, and condensed water is discharged regulator cubicle.
11. methods as claimed in claim 10, it is characterized in that, described method also comprises:
Utilize fan to form wind path in regulator cubicle inside, described evaporator is arranged on the wind path of described fan formation.
12. methods as claimed in claim 11, is characterized in that, wherein, described fan comprises the first fan and the second fan, and described method comprises:
First fan is dried in regulator cubicle, and the damp-heat air of horizontal direction in regulator cubicle is blowed to evaporator;
Evaporator utilizes cold-producing medium to reduce the temperature of regulator cubicle inside, and the damp-heat air condensation that the first fan is blown, condensed water is discharged regulator cubicle;
Cold dry air around evaporator is upwards flowed by the draft effect of the second fan of the side of being located thereon, and discharges regulator cubicle, to reduce the humiture of vertical direction in regulator cubicle by the second fan.
13. methods as claimed in claim 10, it is characterized in that, the aperture of described variable expansion valve comprises:
Solidifying dew point temperature is calculated according to the temperature and humidity of regulator cubicle inside;
If solidifying dew point temperature is higher than preset temperature, according to the aperture of the temperature of regulator cubicle inside and the difference variable expansion valve of solidifying dew point temperature;
If solidifying dew point temperature is lower than preset temperature, according to the aperture of the temperature of regulator cubicle inside and the difference variable expansion valve of preset temperature.
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| CN108131755A (en) * | 2017-12-14 | 2018-06-08 | 国家电网公司 | A kind of electrical equipment component cabinet humiture cooperative control method |
| CN111417288A (en) * | 2020-04-01 | 2020-07-14 | 常州常发制冷科技有限公司 | Overhead type electrical cabinet environment control method and system |
| CN112799451A (en) * | 2020-12-30 | 2021-05-14 | 江苏智库智能科技有限公司 | Automatic regulation and control system for four-way shuttle |
| CN114857808A (en) * | 2022-05-31 | 2022-08-05 | 青岛海信日立空调***有限公司 | Cooling system and control method thereof |
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| CN111417288A (en) * | 2020-04-01 | 2020-07-14 | 常州常发制冷科技有限公司 | Overhead type electrical cabinet environment control method and system |
| CN111417288B (en) * | 2020-04-01 | 2022-04-01 | 常州常发制冷科技有限公司 | Overhead type electrical cabinet environment control method and system |
| CN112799451A (en) * | 2020-12-30 | 2021-05-14 | 江苏智库智能科技有限公司 | Automatic regulation and control system for four-way shuttle |
| CN114857808A (en) * | 2022-05-31 | 2022-08-05 | 青岛海信日立空调***有限公司 | Cooling system and control method thereof |
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