CN114777352A - Fluorine cooling variable frequency drive control module unit and control method thereof - Google Patents
Fluorine cooling variable frequency drive control module unit and control method thereof Download PDFInfo
- Publication number
- CN114777352A CN114777352A CN202210288970.0A CN202210288970A CN114777352A CN 114777352 A CN114777352 A CN 114777352A CN 202210288970 A CN202210288970 A CN 202210288970A CN 114777352 A CN114777352 A CN 114777352A
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- Prior art keywords
- refrigerant
- valve
- heat dissipation
- electronic expansion
- way valve
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims description 13
- 229910052731 fluorine Inorganic materials 0.000 title claims description 13
- 239000011737 fluorine Substances 0.000 title claims description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 55
- 230000017525 heat dissipation Effects 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011555 saturated liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Images
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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
-
- 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
- F25B49/022—Compressor control arrangements
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a fluorine-cooled variable frequency drive control module unit and a control method thereof, wherein a low-temperature liquid refrigerant is used for carrying out heat exchange cooling on a drive module of a compressor, and the bypass flow of the refrigerant is controlled by means of a third electronic expansion valve, so that the flow of the refrigerant exchanging heat with a drive heat dissipation module is controlled, the sufficient heat dissipation of the drive heat dissipation module can be accurately ensured, and the damage of the drive module caused by condensation is prevented.
Description
Technical Field
The invention relates to a fluorine cold variable frequency drive control module unit and a control method thereof.
Background
The existing air-cooling driving heat dissipation technology or fluorine cooling driving heat dissipation technology is mainly adopted for heat dissipation of variable-frequency driving control module units such as air conditioners and heat pumps, but the air-cooling driving heat dissipation technology is adopted, so that insufficient driving heat dissipation or poor heat dissipation can be caused when dirt exists on the surface of a high-environment-temperature refrigeration or radiator, the output of the unit capacity is further influenced, and even a compressor driving module can be damaged. Although the fluorine cooling driving heat dissipation technology does not have the problems, improper control can cause condensation water to be generated on the surface of a refrigerant cooling pipeline or a refrigerant heat dissipation module, and further damage the inverter compressor driving module.
Disclosure of Invention
Aiming at the problems, the invention provides a fluorine cold variable frequency drive control module unit and a control method thereof, which effectively solve the problems pointed out in the background technology.
The technical scheme adopted by the invention is as follows:
a fluorine-cooled variable-frequency drive control module unit comprises a compressor, a four-way reversing valve and a gas-liquid separator which are sequentially connected from front to back, wherein a D port of the four-way reversing valve is connected with the compressor, an S port of the four-way reversing valve is connected with the gas-liquid separator, a C port of the four-way reversing valve is connected with a flash tank after sequentially passing through a second heat exchanger, a first one-way valve, a drive heat dissipation module and a first electronic expansion valve, and an E port of the four-way reversing valve is connected with an outlet end of the first one-way valve after sequentially passing through the first heat exchanger and a third one-way valve, a gaseous refrigerant outlet of the flash tank is connected with a refrigerant inlet of the compressor after passing through an electromagnetic valve, a liquid refrigerant outlet of the flash tank is respectively connected with inlet ends of the first one-way valve and the third one-way valve through the second one-way valve and the fourth one-way valve, and a third electronic expansion valve is arranged between a refrigerant inlet and a refrigerant outlet of the drive heat dissipation module.
Through the parallelly connected third electronic expansion valve of drive heat dissipation module, accurate control drive heat dissipation module's refrigerant flow guarantees that drive heat dissipation module surface temperature and refrigerant cooling outlet pipe temperature are higher than air dew point temperature all the time, prevents the condensation, avoids damaging compressor drive module.
Preferably, the first heat exchanger is provided with an ambient temperature sensor and an air dew point temperature detector.
Preferably, the driving heat dissipation module is provided with a heat dissipation module surface temperature sensor, and a refrigerant outlet end of the driving heat dissipation module is provided with a refrigerant heat dissipation outlet pipe temperature sensor.
Meanwhile, the invention also provides a control method of the fluorine cold variable frequency drive control module unit, and when T is measured1＜T3Or T2＜T3Then controlling the third electronic expansion valve to open for a large number of steps until T1＞T3+△T1Or T2＞T3+△T2Then controlling the third electronic expansion valve to maintain the current step number, wherein T1For the temperature, T, detected by the coolant heat-radiating outlet pipe temperature sensor2Temperature, T, detected by a surface temperature sensor of the heat dissipating module3Is the temperature, delta T, detected by an air dew point temperature detector1And Δ T2Is a system set value.
△T1And Δ T2And different corrections are carried out according to different environment temperatures.
The driving module of the compressor is subjected to heat exchange and cooling by utilizing the low-temperature liquid refrigerant, and the bypass flow of the refrigerant is controlled by means of the third electronic expansion valve, so that the flow of the refrigerant for heat exchange with the driving heat dissipation module is controlled, the driving heat dissipation module can be accurately ensured to dissipate heat sufficiently, and the driving module is prevented from being damaged due to condensation.
Drawings
Figure 1 illustrates a system schematic of the present invention.
Detailed Description
The invention is described in further detail below by means of specific embodiments in conjunction with the accompanying drawings.
Example 1
As shown in figure 1, the fluorine cooling frequency conversion drive control module unit comprises a compressor 1, a four-way reversing valve 3 and a gas-liquid separator 2 which are connected in sequence from front to back, a D port of the four-way reversing valve 3 is connected with the compressor 1, an S port is connected with the gas-liquid separator 2, a C port sequentially passes through the second heat exchanger 21, the first one-way valve 17, the driving heat dissipation module 14 and the first electronic expansion valve 10 and then is connected with the flash tank 9, an E port sequentially passes through the first heat exchanger 4 and the third one-way valve 19 and then is connected with the outlet end of the first one-way valve 17, the gaseous refrigerant outlet of the flash tank 9 is connected with the refrigerant inlet of the compressor 1 after passing through the electromagnetic valve 8, the liquid refrigerant outlet of the flash tank 9 passes through the second electronic expansion valve 11 and then is respectively connected with the inlet ends of the first check valve 17 and the third check valve 19 through the second check valve 18 and the fourth check valve 20, a third electronic expansion valve 16 is arranged between the refrigerant inlet and the refrigerant outlet of the driving heat dissipation module 14.
And the first heat exchanger 4 is provided with an ambient temperature sensor 6 and an air dew point temperature detector 7.
The driving heat dissipation module 14 is provided with a heat dissipation module surface temperature sensor 12, and a refrigerant heat dissipation outlet pipe temperature sensor 15 is arranged at a refrigerant outlet end of the driving heat dissipation module 14.
A control method of a fluorine cold variable frequency drive control module unit, when T1＜T3Or T2＜T3Then the third electronic expansion valve 16 is controlled to open by a large number of steps until T1＞T3+△T1Or T2＞T3+△T2Then the third electronic expansion valve 16 is controlled to maintain the current step number, where T1For the temperature, T, detected by the refrigerant heat-dissipating outlet pipe temperature sensor 152For the temperature, T, detected by the heat sink module surface temperature sensor 123Is the temperature, delta T, detected by the air dew point temperature detector 71And Δ T2Is a system set value.
The environment temperature sensor 6 is used for detecting the current environment temperature and adjusting the delta T according to the current environment temperature1And Δ T2Automatic correction is carried out, so that the driving heat dissipation module is guaranteed to dissipate heat fully, and the driving module is prevented from being damaged due to condensation.
The refrigeration working principle is as follows:
the gas refrigerant with high temperature and high pressure generated by the compressor 1 enters the first heat exchanger 4 through the four-way reversing valve 3 to exchange heat with air to be changed into liquid refrigerant with high pressure and low temperature, the liquid refrigerant with high pressure and low temperature enters the driving heat dissipation module 14 and the third electronic expansion valve 16 through the third one-way valve 19 to exchange heat, then is throttled into refrigerant with gas-liquid two-phase intermediate pressure and intermediate temperature through the first electronic expansion valve 10 to enter the flash tank 9, then the gas refrigerant is separated from the liquid refrigerant, the saturated liquid refrigerant is throttled into low-temperature low-pressure refrigerant with gas-liquid two-phase through the second electronic expansion valve 11 to pass through the second one-way valve 18 and then enter the second heat exchanger 21 to exchange heat, then enters the gas-liquid separator 2 through the four-way reversing valve 3, the gas refrigerant in the gas-liquid separator 2 enters the compressor 1 to be primarily compressed, and the saturated gas refrigerant from the flash tank 9 enters the compressor 1 through the electromagnetic valve 8, mixing with the first-stage compressed refrigerant, and performing secondary compression.
The heating working principle is as follows:
the gas refrigerant with high temperature and high pressure generated by the compressor 1 enters the second heat exchanger 21 through the four-way reversing valve 3 to exchange heat with water to be changed into liquid refrigerant with high pressure and low temperature, the liquid refrigerant with high pressure and low temperature enters the driving heat dissipation module 14 and the third electronic expansion valve 16 through the first one-way valve 17 to exchange heat, then is throttled into refrigerant with gas-liquid two-phase intermediate pressure and intermediate temperature through the first electronic expansion valve 10 to enter the flash tank 9, then the gas refrigerant is separated from the liquid refrigerant, the saturated liquid refrigerant is throttled into low-temperature low-pressure refrigerant with gas-liquid two-phase through the second electronic expansion valve 11 to pass through the fourth one-way valve 20 and then enter the first heat exchanger 4 to exchange heat, then enters the gas-liquid separator 2 through the four-way reversing valve 3, the gas refrigerant in the gas-liquid separator 2 enters the compressor 1 to be primarily compressed, and the saturated gas refrigerant from the flash tank 9 enters the compressor 1 through the electromagnetic valve 8, mixing with the first-stage compressed refrigerant, and performing secondary compression.
Finally, it should be noted that the above-mentioned list is only the specific embodiment of the present invention. It is apparent that the present invention is not limited to the above embodiment, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (4)
1. The fluorine cooling frequency conversion drive control module unit is characterized by comprising a compressor (1), a four-way reversing valve (3) and a gas-liquid separator (2) which are sequentially connected from front to back, wherein a D port of the four-way reversing valve (3) is connected with the compressor (1), an S port is connected with the gas-liquid separator (2), a C port sequentially passes through a second heat exchanger (21), a first one-way valve (17), a drive heat dissipation module (14) and a first electronic expansion valve (10) and is connected with a flash tank (9), an E port sequentially passes through the first heat exchanger (4) and a third one-way valve (19) and is connected with an outlet end of the first one-way valve (17), a gaseous refrigerant outlet of the flash tank (9) passes through an electromagnetic valve (8) and is connected with a refrigerant inlet of the compressor (1), a liquid refrigerant outlet of the flash tank (9) passes through the second electronic expansion valve (11) and then passes through the second one-way valve (18) and a fourth one-way valve (20) and is respectively connected with the first one-way valve (17) and the third one-way valve (20) The inlet ends of the one-way valves (19) are connected, and a third electronic expansion valve (16) is arranged between the refrigerant inlet and the refrigerant outlet of the driving heat dissipation module (14).
2. The fluorine cooling frequency conversion drive control module unit according to claim 1, wherein the first heat exchanger (4) is provided with an ambient temperature sensor (6) and an air dew point temperature detector (7).
3. The fluorine cooling frequency conversion drive control module unit according to claim 1, wherein the drive heat dissipation module (14) is provided with a heat dissipation module surface temperature sensor (12), and a refrigerant outlet end of the drive heat dissipation module (14) is provided with a refrigerant heat dissipation outlet pipe temperature sensor (15).
4. A control method for a fluorine cold frequency conversion drive control module unit is characterized in that when T is reached1＜T3Or T2＜T3When the valve is opened, the third electronic expansion valve (16) is controlled to be opened by a large number of steps until T1＞T3+△T1Or T2＞T3+△T2Then the third electronic expansion valve (16) is controlled to maintain the current step number, where T1The temperature detected by a temperature sensor (15) of a refrigerant heat radiation outlet pipe，T2For the temperature, T, detected by the heat-dissipating module surface temperature sensor (12)3Is the temperature, delta T, detected by an air dew point temperature detector (7)1And Δ T2Is set as a system setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288970.0A CN114777352A (en) | 2022-03-23 | 2022-03-23 | Fluorine cooling variable frequency drive control module unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288970.0A CN114777352A (en) | 2022-03-23 | 2022-03-23 | Fluorine cooling variable frequency drive control module unit and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114777352A true CN114777352A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210288970.0A Pending CN114777352A (en) | 2022-03-23 | 2022-03-23 | Fluorine cooling variable frequency drive control module unit and control method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576327A (en) * | 2009-05-27 | 2009-11-11 | 大连三洋压缩机有限公司 | Duel-temperature refrigeration cycle system |
| CN105115208A (en) * | 2015-09-22 | 2015-12-02 | 陈志强 | Air source heat pump system provided with multiple user-side heat exchangers |
| CN105240957A (en) * | 2015-10-27 | 2016-01-13 | 广东美的暖通设备有限公司 | Enhanced vapor injection air conditioner system |
| CN105698307A (en) * | 2014-11-28 | 2016-06-22 | 青岛海尔空调器有限总公司 | Switchable-operation air-supplying enthalpy-increasing air-conditioning system and switching method |
| CN106196425A (en) * | 2016-06-29 | 2016-12-07 | 珠海格力电器股份有限公司 | Power component condensation preventing method, device and system |
| CN107120793A (en) * | 2017-05-05 | 2017-09-01 | 广东美的暖通设备有限公司 | Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method |
| CN110186136A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Air-conditioning system and air conditioner |
| CN111520873A (en) * | 2020-05-25 | 2020-08-11 | 广东志高暖通设备股份有限公司 | Air conditioning system and condensation prevention control method of variable-frequency radiating pipe of air conditioning system |
| CN112032919A (en) * | 2020-09-10 | 2020-12-04 | 四川长虹空调有限公司 | Refrigerant cooling and condensation preventing control method for air conditioner variable frequency drive board |
| CN112524836A (en) * | 2020-12-17 | 2021-03-19 | 广东积微科技有限公司 | Three-pipe multi-split system and control method thereof |
| CN113993361A (en) * | 2021-12-31 | 2022-01-28 | 天津飞旋科技股份有限公司 | Cooling water unit frequency converter refrigerant cooling system |
-
2022
- 2022-03-23 CN CN202210288970.0A patent/CN114777352A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576327A (en) * | 2009-05-27 | 2009-11-11 | 大连三洋压缩机有限公司 | Duel-temperature refrigeration cycle system |
| CN105698307A (en) * | 2014-11-28 | 2016-06-22 | 青岛海尔空调器有限总公司 | Switchable-operation air-supplying enthalpy-increasing air-conditioning system and switching method |
| CN105115208A (en) * | 2015-09-22 | 2015-12-02 | 陈志强 | Air source heat pump system provided with multiple user-side heat exchangers |
| CN105240957A (en) * | 2015-10-27 | 2016-01-13 | 广东美的暖通设备有限公司 | Enhanced vapor injection air conditioner system |
| CN106196425A (en) * | 2016-06-29 | 2016-12-07 | 珠海格力电器股份有限公司 | Power component condensation preventing method, device and system |
| CN107120793A (en) * | 2017-05-05 | 2017-09-01 | 广东美的暖通设备有限公司 | Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method |
| CN110186136A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Air-conditioning system and air conditioner |
| CN111520873A (en) * | 2020-05-25 | 2020-08-11 | 广东志高暖通设备股份有限公司 | Air conditioning system and condensation prevention control method of variable-frequency radiating pipe of air conditioning system |
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| CN112524836A (en) * | 2020-12-17 | 2021-03-19 | 广东积微科技有限公司 | Three-pipe multi-split system and control method thereof |
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