CN106546045B - Cooling device of frequency converter, air-conditioner set and control method - Google Patents
Cooling device of frequency converter, air-conditioner set and control method Download PDFInfo
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- CN106546045B CN106546045B CN201611042631.5A CN201611042631A CN106546045B CN 106546045 B CN106546045 B CN 106546045B CN 201611042631 A CN201611042631 A CN 201611042631A CN 106546045 B CN106546045 B CN 106546045B
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- frequency converter
- cooling system
- air
- cooling
- chilled water
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Classifications
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- 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
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
Abstract
The present invention provides a kind of cooling device of frequency converter, wherein the cooling device of frequency converter includes refrigerant cooling system and freezing water cooling system；Compressor, cooling component and the heat exchanger assembly of the refrigerant cooling system are sequentially connected composition refrigerant circuit by pipeline；Chilled water inlet pipe, frequency converter refrigerating module, chilled water outlet pipe and the heat exchanger assembly of the freezing water cooling system are sequentially connected composition chilled water circuit.Above-mentioned cooling device of frequency converter, water in the freezing water cooling system is cooling with the refrigerant heat exchanger in the refrigerant cooling system in the heat exchanger assembly, it is further cooling to frequency converter using the water in the freezing water cooling system, even if when air-conditioner set circulating cooling system not running where frequency converter, also it can be realized the real-time cooling to frequency converter, improve the safety of frequency converter operation.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly to a kind of cooling device of frequency converter, air-conditioner set and control
Method processed.
Background technique
In traditional technology, the type of cooling of frequency converter is obtained from other independent air-conditioning systems in a kind of pair of air-conditioner set
Cold source is taken, this type of cooling generally requires the pipeline that building is connect with other independent air-conditioning systems, causes project installation not
Become, and it is larger to occupy place.Another kind is to the refrigeration cycle that the type of cooling of frequency converter in air-conditioner set is from unit itself
System obtains cold source, and this type of cooling must be just able to achieve when the cooling cycle system of unit works, and certain special
In the case of, such as in PV air-conditioner unit, when the air-conditioner set only runs photovoltaic power generation mode, the refrigeration cycle of air-conditioner set
System does not work, therefore can not cool down to the frequency converter for needing work.
Summary of the invention
Based on this, it is necessary to can not be asked frequency converter real-time perfoming cooling for air-conditioner set in traditional technology itself
Topic provides a kind of cooling device of frequency converter, air-conditioner set and control method.
A kind of cooling device of frequency converter provided by the invention, wherein the cooling device of frequency converter includes that refrigerant is cooling
System and freezing water cooling system；
The refrigerant cooling system includes compressor, cooling component and heat exchanger assembly, the exhaust of the compressor
The air entry of mouth, the cooling component, the heat exchanger assembly and the compressor passes sequentially through pipeline and connects and composes refrigeration
Agent circuit；
The freezing water cooling system includes chilled water inlet pipe, chilled water outlet pipe and frequency converter refrigerating module, described cold
Freeze water inlet pipe, the frequency converter refrigerating module, the chilled water outlet pipe and the heat exchanger assembly and is sequentially connected composition freezing
Water loop, the frequency converter refrigerating module is for cooling to frequency converter；
The refrigerant in chilled water and the refrigerant circuit in the chilled water circuit is in the heat exchanger assembly
Realize heat exchange.
The freezing water cooling system includes dehumidify evaporimeter component in one of the embodiments, the dehumidifying evaporation
Device assembly is arranged on the chilled water inlet pipe.
The dehumidify evaporimeter component includes shell, the first blower and First Heat Exchanger in one of the embodiments,
The shell is equipped with return air inlet and air outlet, and first blower and the First Heat Exchanger are arranged in the shell
Interior, first blower flows through after the First Heat Exchanger for entering air after the shell by return air inlet by the outlet air
Mouth flows out the shell.
The dehumidify evaporimeter further includes the first temperature sensor in one of the embodiments, and first temperature passes
Sensor is arranged at the return air inlet.
The housing bottom is equipped with drip tray in one of the embodiments,.
The water receiving pan bottom is equipped with curved trap in one of the embodiments, and the drip tray passes through institute
It states and is connected to outside trap and frequency conversion tank.
The freezing water cooling system includes air-conditioner host chilled water inlet pipe and air-conditioning master in one of the embodiments,
Machine chilled water outlet pipe；
The first end of the air-conditioner host chilled water inlet pipe is connected on the chilled water inlet pipe, the air-conditioner host freezing
Water inlet pipe is used to introduce the chilled water of air-conditioner set circulating cooling system to the freezing water cooling system；
The first end of the air-conditioner host chilled water outlet pipe is connected in the chilled water outlet pipe, the air-conditioner host freezing
Water outlet pipe is used to the chilled water after the freezing water cooling system heat exchange being transmitted back to the air-conditioner set circulating cooling system
In.
The tie point of the air-conditioner host chilled water inlet pipe and the chilled water inlet pipe is located in one of the embodiments,
Between the dehumidify evaporimeter component and the heat exchanger assembly.
The chilled water outlet pipe is equipped with first switch component in one of the embodiments,；The air-conditioner host freezing
The tie point of the first end of water outlet pipe and the chilled water outlet pipe is located at the first switch component and the cooling mould of the frequency converter
Between block.
The chilled water outlet pipe and frequency converter refrigerating module junction are equipped with the second temperature in one of the embodiments,
Spend sensor.
The present invention also provides a kind of air-conditioner sets, wherein the air-conditioner set includes frequency converter and change as described above
Frequency device cooling device, the frequency converter refrigerating module is for cooling down the frequency converter.
The present invention also provides a kind of control methods of cooling device of frequency converter as described above, wherein the control method
The following steps are included:
When air-conditioner set circulating cooling system not running, the refrigerant cooling system and the freezing water cooling are controlled
But system works.
The controlled refrigerant cooling system and freezing water cooling system work in one of the embodiments,
The following steps are included:
Control compressor operating in refrigerant cooling system；
Control the second blower work of cooling component in refrigerant cooling system；
Throttling set on pipeline between cooling component and heat exchanger assembly is set in control refrigerant cooling system
It opens；
Pump working in control freezing water cooling system；
The first blower work of dehumidify evaporimeter component in control freezing water cooling system；
The first switch component being arranged in chilled water outlet pipe in control freezing water cooling system is opened.
In one of the embodiments, the control method the following steps are included:
When the operation of air-conditioner set circulating cooling system, the freezing water cooling system work is controlled.
The control freezing water cooling system saddlebag includes following steps in one of the embodiments:
The second switch component being arranged on air-conditioner host chilled water inlet pipe in control freezing water cooling system is opened；
Pump working in control freezing water cooling system；
The first blower work of dehumidify evaporimeter component in control freezing water cooling system；
The third switch block being arranged in air-conditioner host chilled water outlet pipe in control freezing water cooling system is opened.
The control method is further comprising the steps of in one of the embodiments:
Obtain the second temperature sensor survey that the chilled water outlet pipe and frequency converter refrigerating module junction are set
Fixed frequency converter cooling temperature, and the frequency converter cooling temperature is compared with the first preset temperature and the second preset temperature
Compared with, wherein the first preset temperature is higher than second preset temperature；
When the frequency converter cooling temperature is higher than first preset temperature, the cold of the cooling device of frequency converter is controlled
But efficiency increases；
When the frequency converter cooling temperature is lower than second preset temperature, the cold of the cooling device of frequency converter is controlled
But efficiency reduces.
Above-mentioned cooling device of frequency converter, including refrigerant cooling system and freezing water cooling system；The freezing water cooling
But the water in system is cooling with the refrigerant heat exchanger in the refrigerant cooling system in the heat exchanger assembly, further benefit
Cooling to frequency converter with the water in the freezing water cooling system, the company of not needing takes the cooling recirculation system of other air-conditioner sets,
Solve the problems, such as that project installation is complicated and takes up an area, even if the air-conditioner set circulating cooling system in addition where frequency converter is not transported
When row, the real-time cooling to frequency converter also can be realized, improve the safety of frequency converter operation.
Above-mentioned cooling device of frequency converter is additionally provided with dehumidify evaporimeter component in freezing water cooling system, and this is removed
Wet evaporator assemblies cool down first with chilled water, thus the temperature of dehumidify evaporimeter component lower than frequency converter refrigerating module and
The temperature of frequency converter avoids so that preferentially frequency converter is discharged in condensation to the moisture in air in dehumidify evaporimeter component in frequency conversion
It is generated on the devices such as device and condensation and causes security risk, got rusty equal loss's problem in addition, also avoiding the devices such as frequency converter.
Above-mentioned cooling device of frequency converter, additionally it is possible to introduce the chilled water in the circulating cooling system of air-conditioner set described cold
Freeze water cooling system, improves cooling efficiency.
Above-mentioned air-conditioner set is provided with above-mentioned frequency conversion cooling device, can be in air conditioner using above-mentioned frequency conversion cooling device
When group circulating cooling system not running, the safety that frequency converter operation is improved so that frequency converter cools down in real time can be also obtained.
Whether the control method of above-mentioned cooling device of frequency converter is in operation shape according to the circulating cooling system of air-conditioner set
State adjusts the operating mode of cooling device of frequency converter, can be improved the cooling efficiency and security performance of frequency converter.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention
A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is the structural schematic diagram of one preferred embodiment of cooling device of frequency converter of the present invention；
Fig. 2 is that the fluid of one preferred embodiment of cooling device of frequency converter of the present invention flows to schematic diagram；
Fig. 3 is one preferred embodiment flow diagram of cooling device of frequency converter control method of the present invention；
Wherein,
110- compressor；120- cooling component；121- First Heat Exchanger；The second blower of 122-；130- heat exchanger assembly；
140- throttling set；150- air-inlet grille；160- air outlet grate；
210- frequency converter refrigerating module；211- second temperature sensor；220- dehumidify evaporimeter component；221- shell；
222- return air inlet；The first temperature sensor of 223-；224- air outlet；225- drip tray；226- trap；The first wind of 227-
Machine；228- First Heat Exchanger；231- water pump；232- check valve；233- third temperature sensor；241- first switch component；
251- second switch component；The 4th temperature sensor of 252-；261- third switch block；
300- frequency conversion tank；
400- control mainboard.
Specific embodiment
It please refers to shown in Fig. 1 and Fig. 2, cooling device of frequency converter of the invention includes refrigerant cooling system, freezing water cooling
But system and cold cabinet.
Cold cabinet be fitted on the side plate of frequency conversion tank 300 and with frequency conversion tank airtight connection, refrigerant cooling system setting
In cold cabinet, freezing water cooling system is arranged in the closed frequency conversion tank 300 where frequency converter, refrigerant cooling system with
Freezing water cooling system passes through the face that cold cabinet is bonded with frequency conversion tank and is connected.
Wherein, refrigerant cooling system has compressor 110, cooling component 120 and heat exchanger assembly 130, compressor 110
Exhaust outlet, cooling component 120, heat exchanger assembly 130, compressor 110 air entry pass sequentially through pipeline and connect and compose refrigeration
Agent circuit.It is equipped with throttling set 140 on pipeline between cooling component 120 and heat exchanger assembly 130, can be somebody's turn to do by control
The refrigerating efficiency of the flow control refrigerant cooling system of throttling set 140.
Freeze water cooling system have chilled water inlet pipe, chilled water outlet pipe and frequency converter refrigerating module 210, chilled water into
Pipe, frequency converter refrigerating module 210, chilled water outlet pipe and heat exchanger assembly 130 are sequentially connected composition chilled water circuit, and frequency converter is cold
But module 210 is for cooling to frequency converter.
Third temperature sensor 233, the third temperature sensing are equipped in chilled water inlet pipe and 130 junction of heat exchanger assembly
Device 233 is used to measure and the chilled water temperature after heat exchanger heat exchange cooling.Water pump 231 and unidirectional is additionally provided on chilled water inlet pipe
Valve 232, water pump 231 is for providing the circulation power of chilled water in chilled water circuit, and check valve 232 is for avoiding chilled water circuit
In chilled water adverse current.
In other embodiments, the other positions in chilled water circuit can be set in water pump 231, for example, it is also possible to be arranged
In chilled water outlet pipe.
Chilled water outlet pipe is equipped with first switch component 241, which is preferably solenoid valve.Frequency converter
Whether refrigerating plant can enter heat exchanger assembly 130 and its by controlling the folding control chilled water of first switch component 241
Interior refrigerant exchanges heat.
Chilled water outlet pipe and 210 junction of frequency converter refrigerating module are additionally provided with second temperature sensor 211, the second temperature
Sensor 211 is used to measure the cooling temperature of frequency converter refrigerating module 210, can be measured by second temperature sensor 211
Temperature value judges the cooling efficiency of cooling device of frequency converter.
The refrigerant in chilled water and refrigerant circuit in chilled water circuit exchanges heat in heat exchanger assembly 130, chilled water
Frequency converter refrigerating module 210 is flowed into through chilled water inlet pipe after cooling down with refrigerant heat exchanger, in frequency converter refrigerating module 210
To frequency converter carry out absorbing and cooling temperature, the chilled water outlet pipe of chilled water after heat absorption be recycled into heat exchanger assembly 130 again with
Refrigerant heat exchanger.
Heat exchanger assembly 130 is double-tube heat exchanger, the chilled water in chilled water circuit, the refrigerant in refrigerant circuit point
The temperature of chilled water drops in the not reverse flow in the shell side of double-tube heat exchanger or tube side, the heat of refrigerant suction chilled water
It is low.In other embodiments, heat exchanger assembly 130 is also possible to other forms, such as can also be finned tube heat exchanger.
Cooling component 120 has the second blower 121 and the second heat exchanger 122, and refrigerant is by 110 exhaust outlet of compressor
Into the second heat exchanger 122, heat release cools down under the action of the second blower 121, and the liquid refrigerant for generating low temperature enters heat exchange
Device assembly 130 cools down the water in chilled water circuit.
Other either sides of cold cabinet are equipped with air-inlet grille 150 and air outlet grate 160, and cooling component 130 is the
Under the action of two blowers 121, cold wind enters cold cabinet by air-inlet grille 150 outside cold cabinet, flows through the second heat exchanger 122 to the
After two heat exchangers 122 are cooling, then it is discharged outside cold cabinet by air outlet grate 160.
Frequency converter refrigerating module 210 is a kind of heat exchanger, such as can be plate heat exchanger or U-tube sheet heat exchanger, is become
Frequency heat exchanger module can exchange heat with converter module, and converter module cooling is made to maintain certain temperature.
In the cooling device of frequency converter, refrigerant cooling system, freezing water cooling system and frequency converter are arranged in simultaneously to be become
It in frequency cabinet 300, is combined together, reduces the land occupation and installation of the outer machine of traditional cooling, structure is simple, occupies little space, no
The cooling recirculation system for needing even to take other air-conditioner sets solves the problems, such as that project installation is complicated and takes up an area.In addition becoming
When air-conditioner set circulating cooling system not running where frequency device, it can also be realized by the refrigerant cooling system in cold cabinet
Real-time cooling to frequency converter improves the safety of frequency converter operation.
As a kind of optional embodiment, dehumidify evaporimeter component 220, dehumidify evaporimeter group are equipped on chilled water inlet pipe
Part 220 has shell 221, the first blower 227, First Heat Exchanger 228, the first temperature sensor 223 and drip tray 225.Its
In, shell 221 is equipped with return air inlet 222 and air outlet 224, and the first blower 227 and First Heat Exchanger 228 are arranged in shell
In 221, the first blower 227 can make air enter shell 221 by return air inlet 222 and flow through after First Heat Exchanger 228 by outlet air
Mouth 224 flows out shells 221.Air cools down in dehumidify evaporimeter component 220, and the vapor carried condenses in shell 221
For water and collect in drip tray 225.
As a kind of optional embodiment, the top of shell 221 is arranged in return air inlet 222, and air outlet 224 is arranged in shell
221 lower part.
In frequency converter operational process, especially it is easy to produce inside and outside humidity biggish season, the frequency conversion tank 300 of frequency converter
Condensation, and due to initially entering dehumidify evaporimeter component with the chilled water after the heat exchange cooling of heat exchanger assembly 130 in the present embodiment
220 dehumidify, and then enter back into frequency converter refrigerating module 210 and cool down to frequency converter, ensure that dehumidify evaporimeter component
220 everywhere in minimum temperature point, so that the vapor in air is condensed into water in dehumidify evaporimeter component 220, avoids to removing
Frequency conversion refrigerating module temperature is than initial evaporation device assembly when wet evaporator assemblies 220 distinguish cooling supply with frequency converter refrigerating module 210
Temperature it is low and condensation is generated in converter module, preferential to dehumidify, reaching prevents converter module from condensation occur, eliminates peace
Full hidden danger, while avoiding since the vapor in air makes the problem of rustiness of component.
Preferably, curved trap 226, the water are equipped in 225 bottom of drip tray of dehumidify evaporimeter component 220
Bend pipe 226 passes through frequency conversion tank 300 and is connected to outside.Curved 226 one side of trap can draw the water in drip tray 225
Frequency conversion tank 300 out store a certain amount of water in the bending section, the storage on the other hand since trap 226 has bending section
There are the effects that the water in bend pipe can be realized water seal, avoid in the entrance frequency conversion tank 300 in 300 humid external air of frequency conversion tank.
As a kind of optional embodiment, the first temperature sensor is equipped at the return air inlet 222 of dehumidify evaporimeter component 220
223, which is used to measure the air themperature at return air inlet 222, i.e. monitoring dehumidify evaporimeter component 220
The temperature at place.
As a kind of optional embodiment, freezing water cooling system also has air-conditioner host chilled water inlet pipe and air-conditioner host
Chilled water outlet pipe.The first end of air-conditioner host chilled water inlet pipe is connected on chilled water inlet pipe, air-conditioner host chilled water inlet pipe
The other end is connected in the circulating cooling system of the air-conditioner set where cooling device of frequency converter on chilled water outlet pipeline, is used for
Chilled water in air-conditioner set circulating cooling system is introduced into freezing water cooling system.It is equipped on air-conditioner host chilled water inlet pipe
Second switch component 251 and the 4th temperature sensor 252, the second switch component 251 are preferably motor-driven valve, wherein second switch
Component 251 is used to control the on-off and flow of air-conditioner host chilled water inlet pipe, and the 4th temperature sensor 252 is flowed into for measuring
Freeze the temperature of the chilled water in water cooling system.
Preferably, the first end of air-conditioner host chilled water inlet pipe is connected to heat exchanger assembly 130 and dehumidify evaporimeter component
On chilled water inlet pipe between 220, so that the chilled water introduced by air-conditioner host chilled water inlet pipe is first to dehumidify evaporimeter
Component 220 carries out heat exchange cooling.
The first end of air-conditioner host chilled water outlet pipe is connected in chilled water outlet pipe, the air-conditioner host chilled water outlet pipe other end
It is connected on the total chilled water water return pipeline of circulating cooling system of the air-conditioner set where cooling device of frequency converter, being used for will be cold
The chilled water frozen after exchanging heat in water cooling system is transmitted back in air-conditioner set circulating cooling system.In air-conditioner host chilled water outlet pipe
It is equipped with third switch block 261, which is preferably solenoid valve.
Preferably, the first end of air-conditioner host chilled water outlet pipe is connected to first switch component 241 and the cooling mould of frequency converter
It, can be by cold in the folding control chilled water system of control first switch component 241 in chilled water outlet pipe between block 210
Whether jelly water, which enters heat exchanger assembly 130, carries out heat exchange cooling.
The frozen headwater that air-conditioner set is taken by air-conditioner host chilled water inlet pipe and air-conditioner host chilled water outlet pipe connection, according to
The actual load operating condition of machine, such as when machine burden increases, and the amount of cooling water that converter module needs is larger, extract empty
The frozen headwater in host circulating cooling system is adjusted to be dehumidified and cooled down, to improve the steady of frequency conversion cooling device cooling performance
It is fixed.
As a kind of optional embodiment, when extract the frozen headwater in air-conditioner host circulating cooling system carry out dehumidifying and
When cooling, since air-conditioner host circulating cooling system often has biggish amount of cooling water, it may be selected to close refrigerant cooling
System.
As a kind of optional embodiment, above-mentioned compressor 110 can be frequency-changeable compressor 110, can be somebody's turn to do by control
The refrigerating efficiency of the power control refrigerant cooling system of frequency-changeable compressor 110.
As a kind of optional embodiment, cooling device of frequency converter is additionally provided with control mainboard 400, control mainboard 400 and system
Cryogen cooling system and freezing water cooling system signal connection, further, control mainboard 400 also connects with air-conditioner host signal
It connects, control mainboard 400 is for controlling cooling device of frequency converter work, additionally it is possible to receive air-conditioner host operational mode signal
And cooling device is controlled according to air-conditioner host operational mode.
The present invention also provides a kind of air-conditioner set, which includes air-conditioner set host, photovoltaic generating system, frequency conversion
Device and above-mentioned cooling device of frequency converter, air-conditioner set host for realizing air-conditioner set operation, frequency conversion cooling device and become
Frequency device is arranged in together in frequency conversion tank 300, and the structure of frequency conversion cooling device has been described above, and details are not described herein.
It please refers to shown in Fig. 3, the present invention also provides a kind of control methods of above-mentioned cooling device of frequency converter, including following step
It is rapid:
S100 controls refrigerant cooling system and chilled water is cooling when air-conditioner set circulating cooling system not running
System work；
S200 controls the freezing water cooling system work when the operation of air-conditioner set circulating cooling system.
Following step is included specifically, controlling refrigerant cooling system in S100 step and freezing water cooling system saddlebag
It is rapid:
Compressor 110 in refrigerant cooling system is controlled to work；
Control the second blower 121 work of cooling component 120 in refrigerant cooling system；
Section on pipeline between cooling component 120 and heat exchanger assembly 130 is set in control refrigerant cooling system
Device 140 is flowed to open；
Water pump 231 works in control freezing water cooling system；
The first blower 227 work of dehumidify evaporimeter component 220 in control freezing water cooling system；
The first switch component 241 being arranged in chilled water outlet pipe in control freezing water cooling system is opened.
At this point, the chilled water in cooling water system is cooling with refrigerant heat exchanger in double-tube heat exchanger, cold source, freezing are obtained
Water is reached in dehumidify evaporimeter component 220 and is first dehumidified by water pump 231, check valve 232, while being dropped to 300 body of frequency conversion tank
Warm (recycling realization in frequency conversion tank 300 by the air in dehumidify evaporimeter component 220), it is cooling to enter frequency conversion for chilled water later
Module cools down to converter module, returns heat-exchanging component and refrigerant heat exchanger is cooling, so recycle, reach frequency converter and remove
The effect of wet cooling.
Specifically, controlling the freezing water cooling system saddlebag in S200 step includes following steps:
The second switch component 251 being arranged on air-conditioner host chilled water inlet pipe in control freezing water cooling system is opened；
Water pump 231 works in control freezing water cooling system；
The first blower 227 work of dehumidify evaporimeter component 220 in control freezing water cooling system；
The third switch block 261 being arranged in air-conditioner host chilled water outlet pipe in control freezing water cooling system is opened.
At this point, in air-conditioner set circulating cooling system acquirement cold source chilled water by air-conditioner host chilled water inlet pipe according to
It is secondary to reach in dehumidify evaporimeter component 220 and first dehumidify by water pump 231, check valve 232, while being dropped to 300 body of frequency conversion tank
Warm (recycling realization in frequency conversion tank 300 by the air in dehumidify evaporimeter component 220), it is cooling to enter frequency conversion for chilled water later
Module cools down to converter module, then enters air-conditioner set circulating cooling system by air-conditioner host chilled water outlet pipe and obtain
Again by air-conditioner host chilled water inlet pipe is entered after cold source, so recycles, achieve the effect that frequency converter dehumidifying and cooling.
In above-mentioned cooling device of frequency converter control method, when air-conditioner host not running, i.e. air-conditioner set circulating cooling system
When system not running, for example, the air-conditioner host not running in PV air-conditioner unit, when only photovoltaic generating system is run, the hair of frequency converter
Heat is lower, and the cold source needed is less, can be expired by the cold source in the refrigerant cooling system using cooling device of frequency converter
The cooling requirement of sufficient frequency converter.When air-conditioner host operation, the operation of air-conditioner set circulating cooling system, such as in PV air-conditioner machine
Air-conditioner host is run in group, photovoltaic generating system operation or when not running, and the calorific value of frequency converter is larger, is needed by using empty
The cold source in host circulating cooling system is adjusted to meet the cooling requirement of frequency converter.
As optional embodiment, the control method of above-mentioned cooling device of frequency converter sea the following steps are included:
S300 obtains the second temperature sensor 211 that chilled water outlet pipe Yu 210 junction of frequency converter refrigerating module is arranged in
The frequency converter cooling temperature of measurement, and frequency converter cooling temperature and the first preset temperature and the second preset temperature are compared
Compared with；
S400 controls the cooling efficiency of cooling device of frequency converter when frequency converter cooling temperature is higher than the first preset temperature
It increases；
S500 controls the cooling efficiency of cooling device of frequency converter when frequency converter cooling temperature is lower than the second preset temperature
It reduces.
Specifically, the cooling efficiency raising for controlling frequency conversion cooling device in S400 step can be by following methods reality
It is existing, it should be noted that following methods can individually be implemented, and can also be combined with each other implementation.
The first embodiment is to improve the flow of chilled water in freezing water cooling system.
For example, when the water pump 231 being arranged on chilled water inlet pipe is variable frequency pump 231, it can be by improving frequency conversion water
The frequency of pump 231 improves the flow of chilled water in freezing water cooling system.
Second of embodiment is to improve the refrigerating efficiency of refrigerant cooling system.
For example, can be compressed by improving when the compressor 110 in refrigerant cooling system is frequency-changeable compressor 110
The frequency of machine 110 improves the refrigerating efficiency of refrigerant cooling system.
The third embodiment is to improve the freezing water introduced from air-conditioner set circulating cooling system.
For example, the aperture for the second switch component 251 that control is arranged on air-conditioner host chilled water inlet pipe, is passed through with increasing
The flow of chilled water in the air-conditioner set circulating cooling system that air-conditioner host chilled water inlet pipe is introduced into.
Specifically, the cooling efficiency reduction for controlling frequency conversion cooling device in S500 step can be by following methods reality
It is existing, it should be noted that following methods can individually be implemented, and can also be combined with each other implementation.
The first embodiment is the flow for reducing chilled water in freezing water cooling system.
For example, when the water pump 231 being arranged on chilled water inlet pipe is variable frequency pump 231, it can be by reducing frequency conversion water
The frequency of pump 231 improves the flow of chilled water in freezing water cooling system.
Second of embodiment is the refrigerating efficiency for reducing refrigerant cooling system.
For example, can be compressed by reducing when the compressor 110 in refrigerant cooling system is frequency-changeable compressor 110
The frequency of machine 110 improves the refrigerating efficiency of refrigerant cooling system.
The third embodiment is to reduce the freezing water introduced from air-conditioner set circulating cooling system.
For example, the aperture for the second switch component 251 that control is arranged on air-conditioner host chilled water inlet pipe, is passed through with reducing
The flow of chilled water in the air-conditioner set circulating cooling system that air-conditioner host chilled water inlet pipe is introduced into.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (15)
1. a kind of cooling device of frequency converter, which is characterized in that the cooling device of frequency converter include refrigerant cooling system and
Freeze water cooling system；
The refrigerant cooling system includes compressor (110), cooling component (120) and heat exchanger assembly (130), the pressure
The exhaust outlet of contracting machine (110), the cooling component (120), the heat exchanger assembly (130) and the compressor (110)
Air entry passes sequentially through pipeline and connects and composes refrigerant circuit；
The freezing water cooling system includes chilled water inlet pipe, chilled water outlet pipe and frequency converter refrigerating module (210), described cold
Freeze water inlet pipe, the frequency converter refrigerating module (210), the chilled water outlet pipe and the heat exchanger assembly (130) successively to connect
Composition chilled water circuit is connect, the frequency converter refrigerating module (210) is for cooling to frequency converter；
The refrigerant in chilled water and the refrigerant circuit in the chilled water circuit is in the heat exchanger assembly (130)
Realize heat exchange；
The freezing water cooling system further includes air-conditioner host chilled water inlet pipe and air-conditioner host chilled water outlet pipe；
The first end of the air-conditioner host chilled water inlet pipe is connected on the chilled water inlet pipe, the air-conditioner host chilled water into
Pipe is for introducing the chilled water of air-conditioner set circulating cooling system to the freezing water cooling system；
The first end of the air-conditioner host chilled water outlet pipe is connected in the chilled water outlet pipe, and the air-conditioner host chilled water goes out
Pipe is for the chilled water after the freezing water cooling system heat exchange to be transmitted back in the air-conditioner set circulating cooling system.
2. cooling device of frequency converter according to claim 1, which is characterized in that the freezing water cooling system includes dehumidifying
Evaporator assemblies (220), the dehumidify evaporimeter component (220) are arranged on the chilled water inlet pipe.
3. cooling device of frequency converter according to claim 2, which is characterized in that dehumidify evaporimeter component (220) packet
Include shell (221), the first blower (227) and First Heat Exchanger (228), the shell (221) be equipped with return air inlet (222) with
And air outlet (224), first blower (227) and the First Heat Exchanger (228) setting are interior in the shell (221),
First blower (227) is for flowing through the First Heat Exchanger after so that air is entered the shell (221) by return air inlet (222)
(228) shell (221) is flowed out by the air outlet (224) after.
4. cooling device of frequency converter according to claim 3, which is characterized in that the dehumidify evaporimeter component (220) is also
Including the first temperature sensor (223), first temperature sensor (223) is arranged at the return air inlet (222).
5. cooling device of frequency converter according to claim 3, which is characterized in that shell (221) bottom is equipped with water receiving
Disk (225).
6. cooling device of frequency converter according to claim 5, which is characterized in that drip tray (225) bottom is equipped with curved
Bent trap (226), the drip tray (225) outside the trap and frequency conversion tank (300) by being connected to.
7. cooling device of frequency converter according to claim 2, which is characterized in that the air-conditioner host chilled water inlet pipe and institute
The tie point of chilled water inlet pipe is stated between the dehumidify evaporimeter component (220) and the heat exchanger assembly (130).
8. cooling device of frequency converter according to claim 1, which is characterized in that the chilled water outlet pipe is equipped with first and opens
It closes component (241)；The tie point of the first end of the air-conditioner host chilled water outlet pipe and the chilled water outlet pipe is located at described the
Between one switch block (241) and the frequency converter refrigerating module (210).
9. cooling device of frequency converter according to claim 1, which is characterized in that the chilled water outlet pipe and the frequency converter
Refrigerating module (210) junction is equipped with second temperature sensor (211).
10. a kind of air-conditioner set, which is characterized in that the air-conditioner set includes that frequency converter and such as claim 1 to 9 are any one
Cooling device of frequency converter described in, the frequency converter refrigerating module (210) is for cooling down the frequency converter.
11. a kind of control method of such as described in any item cooling device of frequency converter of claim 2 to 9, which is characterized in that described
Control method the following steps are included:
When air-conditioner set circulating cooling system not running, the refrigerant cooling system and the chilled water cooling system are controlled
System work.
12. control method according to claim 11, which is characterized in that the control refrigerant cooling system and
The freezing water cooling system saddlebag includes following steps:
Control compressor (110) work in refrigerant cooling system；
Control the second blower (121) work of cooling component (120) in refrigerant cooling system；
Control the section on the pipeline being arranged between cooling component (120) and heat exchanger assembly (130) in refrigerant cooling system
Device (140) are flowed to open；
Water pump (231) work in control freezing water cooling system；
The first blower (227) work of dehumidify evaporimeter component (220) in control freezing water cooling system；
The first switch component (241) being arranged in chilled water outlet pipe in control freezing water cooling system is opened.
13. control method according to claim 11, which is characterized in that the control method the following steps are included:
When the operation of air-conditioner set circulating cooling system, the freezing water cooling system work is controlled.
14. control method according to claim 13, which is characterized in that the control freezing water cooling system work
The following steps are included:
The second switch component (251) being arranged on air-conditioner host chilled water inlet pipe in control freezing water cooling system is opened；
Water pump (231) work in control freezing water cooling system；
The first blower (227) work of dehumidify evaporimeter component (220) in control freezing water cooling system；
The third switch block (261) being arranged in air-conditioner host chilled water outlet pipe in control freezing water cooling system is opened.
15. control method described in 1 to 14 any one according to claim 1, which is characterized in that the control method further includes
Following steps:
Setting is obtained in the second temperature sensor of the chilled water outlet pipe and frequency converter refrigerating module (210) junction
(211) the frequency converter cooling temperature measured, and the frequency converter cooling temperature and the first preset temperature and second is default warm
Degree is compared, wherein the first preset temperature is higher than second preset temperature；
When the frequency converter cooling temperature is higher than first preset temperature, the cooling effect of the cooling device of frequency converter is controlled
Rate increases,
When the frequency converter cooling temperature is lower than second preset temperature, the cooling effect of the cooling device of frequency converter is controlled
Rate reduces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611042631.5A CN106546045B (en) | 2016-11-21 | 2016-11-21 | Cooling device of frequency converter, air-conditioner set and control method |
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| CN201611042631.5A CN106546045B (en) | 2016-11-21 | 2016-11-21 | Cooling device of frequency converter, air-conditioner set and control method |
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| CN106546045B true CN106546045B (en) | 2019-02-26 |
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| CN108302835A (en) * | 2018-01-18 | 2018-07-20 | 重庆美的通用制冷设备有限公司 | Handpiece Water Chilling Units and its control method |
| CN110418547B (en) * | 2019-02-26 | 2023-09-15 | 腾讯科技（深圳）有限公司 | data center |
| CN110307159B (en) * | 2019-07-01 | 2020-06-09 | 珠海格力电器股份有限公司 | Inverter compressor and air conditioner |
| CN110553423A (en) * | 2019-09-17 | 2019-12-10 | 珠海格力电器股份有限公司 | Cooling structure of water chilling unit and water chilling unit |
| CN112432397B (en) * | 2020-11-18 | 2021-10-08 | 珠海格力电器股份有限公司 | Air conditioning system and frequency converter condensation prevention control method thereof |
| CN113905594B (en) * | 2021-10-28 | 2023-03-14 | 珠海格力电器股份有限公司 | Heat dissipation control method and device of frequency converter power module, medium and air conditioner |
| CN115031384A (en) * | 2022-06-15 | 2022-09-09 | 珠海格力电器股份有限公司 | Heat dissipation device, heat dissipation unit, heat dissipation control method and heat dissipation control device |
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| FI121052B (en) * | 2007-12-27 | 2010-06-15 | Abb Oy | Air dehumidifier for frequency converter arrangement and method for air drying in frequency converter arrangement |
| CN203518310U (en) * | 2013-09-17 | 2014-04-02 | 珠海格力电器股份有限公司 | Cooling system for heating power device |
| CN203504945U (en) * | 2013-09-26 | 2014-03-26 | 深圳麦克维尔空调有限公司 | Air conditioner and cooling device of frequency conversion module of air conditioner |
| CN203522509U (en) * | 2013-11-08 | 2014-04-02 | 珠海格力电器股份有限公司 | Current transformer cooling system and air-conditioning set with current transformer cooling system |
| CN203788127U (en) * | 2014-02-24 | 2014-08-20 | 珠海格力电器股份有限公司 | Cooling and dehumidifying system of frequency converter and frequency conversion centrifuge |
| CN103841809B (en) * | 2014-02-27 | 2016-08-17 | 深圳市艾睿科电气有限公司 | A kind of Sealing Arrangement cooling system and control method |
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