CN115500049A - Environment control equipment, environment control system and environment control method - Google Patents
Environment control equipment, environment control system and environment control method Download PDFInfo
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- CN115500049A CN115500049A CN202210926353.9A CN202210926353A CN115500049A CN 115500049 A CN115500049 A CN 115500049A CN 202210926353 A CN202210926353 A CN 202210926353A CN 115500049 A CN115500049 A CN 115500049A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 140
- 230000001105 regulatory effect Effects 0.000 claims abstract description 85
- 238000001704 evaporation Methods 0.000 claims abstract description 83
- 230000008020 evaporation Effects 0.000 claims abstract description 74
- 238000009833 condensation Methods 0.000 claims abstract description 52
- 230000005494 condensation Effects 0.000 claims abstract description 52
- 230000007613 environmental effect Effects 0.000 claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims description 66
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 20
- 230000017525 heat dissipation Effects 0.000 description 13
- 238000001035 drying Methods 0.000 description 10
- 238000005057 refrigeration Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000001603 reducing effect Effects 0.000 description 7
- 238000005485 electric heating Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20309—Evaporators
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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
-
- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
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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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
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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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an environment control device, an environment control system and an environment control method. An environmental control apparatus comprising: the shell, install the evaporation heat exchanger in the shell, the vapour and liquid separator, the compressor, first pressure regulating valve, the second pressure regulating valve, first condensation heat exchanger, the second condensation heat exchanger, the reservoir, thermal expansion valve and electronic expansion valve, the evaporation heat exchanger is connected with the vapour and liquid separator, the vapour and liquid separator is connected with the compressor, the compressor is connected with first pressure regulating valve and second pressure regulating valve, first pressure regulating valve is connected with first condensation heat exchanger, the second pressure regulating valve is connected with the second condensation heat exchanger, first condensation heat exchanger and second condensation heat exchanger are connected with the reservoir, the reservoir is connected with thermal expansion valve, thermal expansion valve is connected with the evaporation heat exchanger, electronic expansion valve and the pipeline connection between compressor and the first pressure regulating valve, the pipeline connection between electronic expansion valve and thermal expansion valve and the evaporation heat exchanger.
Description
Technical Field
The present invention relates to the field of environment control technologies for electronic devices, and in particular, to an environment control device, an environment control system, and an environment control method.
Background
The household air conditioner usually starts the refrigeration function under the condition that the outdoor ambient temperature is higher in summer, generally starts the heating function to warm in winter, but needs to start the refrigeration function in winter in some special scenes. For example, in a computer room where hundreds of computers are located or in a room, electronic devices with a large heat generation amount exist, even if the external environment temperature is low, the indoor air temperature is still high (the indoor air temperature may be higher than 50 ℃ under the condition of poor heat dissipation); in addition, for the military equipment of motor-driven type, electronic equipment often is located inside the vehicle-mounted shelter, because electronic equipment has three proofings requirement, can't directly exchange heat with outdoor environment through modes such as opening the door, along with the heat that electronic equipment produced in the operation process is bigger and bigger, it is far away not enough to cool off simply by natural convection and cabin body heat dissipation, if the temperature is too high, very easily leads to burning out of electronic equipment.
Under these special scenes, the mode of directly exchanging heat with the outdoor environment is not preferable, and the refrigeration function of the air conditioner needs to be started to cool the room or the shelter and keep the indoor environment temperature constant so as to maintain the normal operation of the electronic equipment. At present, domestic military electronic equipment requires working temperature to be-40 ℃ (which means external atmospheric temperature) or even lower. However, the general household air conditioner has a serious degradation of the cooling capability at a low temperature, and there is a case where the operation of the cooling system is unstable.
Disclosure of Invention
The invention provides an environment control device, an environment control system and an environment control method, aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: an environmental control apparatus comprising: a shell, an evaporation heat exchanger, a gas-liquid separator, a compressor, a first pressure regulating valve, a second pressure regulating valve, a first condensing heat exchanger, a second condensing heat exchanger, a liquid storage device, a differential pressure valve, a thermal expansion valve and an electronic expansion valve, the evaporation heat exchanger, the gas-liquid separator, the compressor, the first pressure regulating valve, the second pressure regulating valve, the first condensing heat exchanger, the second condensing heat exchanger, the liquid reservoir, the differential pressure valve, the thermostatic expansion valve and the electronic expansion valve are all arranged in the shell, the evaporation heat exchanger is connected with the gas-liquid separator through a pipeline, the gas-liquid separator is connected with the compressor through a pipeline, the compressor is respectively connected with the first pressure regulating valve and the second pressure regulating valve through pipelines, the first pressure regulating valve is connected with the first condensing heat exchanger through a pipeline, the second pressure regulating valve is connected with the second condensing heat exchanger through a pipeline, the first condensing heat exchanger and the second condensing heat exchanger are respectively connected with the liquid storage device through pipelines, one end of the differential pressure valve is connected with a pipeline between the compressor and the first pressure regulating valve through a pipeline, the other end of the differential pressure valve is connected with the liquid storage device through a pipeline, the liquid storage device is connected with the thermostatic expansion valve through a pipeline, the thermostatic expansion valve is connected with the evaporation heat exchanger through a pipeline, one end of the electronic expansion valve is connected with a pipeline between the compressor and the first pressure regulating valve through a pipeline, the other end of the electronic expansion valve is connected with the pipeline between the thermostatic expansion valve and the evaporation heat exchanger through a pipeline.
The technical scheme adopted by the invention has the beneficial effects that: the compressor is used for absorbing the refrigerant low-pressure steam in the gas-liquid separator and compressing the refrigerant low-pressure steam into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing and releasing heat of high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger. The accumulator is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing action of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flow of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
Further, a first pressure gauge is installed on a pipeline between the gas-liquid separator and the compressor, a second pressure gauge and a first one-way valve are installed on a pipeline between the compressor and the first pressure regulating valve, a second one-way valve is installed on a pipeline between the first condensation heat exchanger and the liquid reservoir, a third one-way valve is installed on a pipeline between the second condensation heat exchanger and the liquid reservoir, and a pressure sensor is installed in the liquid reservoir.
The beneficial effect of adopting the further technical scheme is that: the pressure gauge is arranged, so that the pressure at the corresponding position can be conveniently detected. The setting of check valve is convenient for be used for opening according to actual need and stops corresponding pipeline. The pressure sensor is arranged, so that the pressure of the liquid storage device can be conveniently detected.
Further, a drying filter, a liquid viewing mirror and an electromagnetic valve are installed on a pipeline between the liquid storage device and the thermostatic expansion valve, the drying filter is adjacent to the liquid storage device, the electromagnetic valve is adjacent to the thermostatic expansion valve, and the liquid viewing mirror is located between the drying filter and the electromagnetic valve.
The beneficial effect of adopting the further technical scheme is that: the drying filter is used for drying the coolant. The liquid sight glass is used for observing the state of the coolant in the pipeline. The solenoid valve is used for opening and closing the corresponding pipeline.
Furthermore, an evaporation fan is arranged at a position adjacent to the evaporation heat exchanger, and a condensation fan is arranged at a position adjacent to the first condensation heat exchanger and the second condensation heat exchanger.
The beneficial effect of adopting the further technical scheme is that: the condensing fan has stepless speed regulation of wind speed, and the speed regulation of the fan is regulated according to the condensing pressure in the liquid storage device. The arrangement of the evaporation fan improves the heat exchange efficiency of the evaporation heat exchanger. The setting of condensation fan improves condensation heat exchanger's heat transfer efficiency.
Further, the first condensation heat exchanger and the second condensation heat exchanger are installed at the bottom of one end of the bottom of the shell, the first condensation heat exchanger is located above the second condensation heat exchanger, an air inlet surface of the condensation heat exchanger is installed at the bottom of one end of the shell, and the air inlet surface of the condensation heat exchanger is adjacent to the first condensation heat exchanger and the second condensation heat exchanger; the condensation fan is positioned on one side of the bottom of the shell.
The beneficial effect of adopting the further technical scheme is that: the position setting of condensation heat exchanger and condensation fan, the installation and the maintenance of the environmental control equipment of being convenient for.
Furthermore, the evaporation fan is located at the top of the shell, the evaporation heat exchanger is located below the evaporation fan, the thermostatic expansion valve and the electronic expansion valve are located on one side of the evaporation fan, the gas-liquid separator, the liquid storage device and the compressor are located below the evaporation heat exchanger, and the first pressure regulating valve, the second pressure regulating valve and the differential pressure valve are all adjacent to the liquid storage device.
The beneficial effect of adopting the further technical scheme is that: the installation position design of each part improves the compact type of the environmental control equipment, reduces the space occupancy rate of the environmental control equipment and is convenient for the installation and maintenance of the environmental control equipment.
Furthermore, one end of the differential pressure valve is connected with a ball valve, and the ball valve is connected with a pipeline between the compressor and the first pressure regulating valve through a pipeline.
The beneficial effect of adopting the further technical scheme is that: the setting of ball valve is convenient for opening of differential pressure valve pipeline and is stopped.
Further, the compressor, the liquid reservoir and the gas-liquid separator are respectively provided with a crankshaft heating belt, and the evaporation heat exchanger is provided with an electric heater.
The beneficial effect of adopting the further technical scheme is that: the crankshaft heating belt is arranged, the device is preheated after being electrified, the heating temperature is guaranteed not to exceed 25 ℃ through the temperature controller, the initial temperature of a system refrigerant in a low-temperature environment is improved, and meanwhile, liquid impact of a compressor is prevented. When the temperature of the air flowing through the evaporation heat exchanger is lower than a set value, the electric heater is turned on to heat the air, and then the electronic equipment is preheated.
In addition, the invention also provides an environmental control system which comprises any one of the environmental control equipment.
The technical scheme adopted by the invention has the beneficial effects that: the compressor is used for absorbing the refrigerant low-pressure steam in the gas-liquid separator and compressing the refrigerant low-pressure steam into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing and releasing heat of high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger. The accumulator is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing action of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flow of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
In addition, the invention also provides a ring control method, based on the ring control system, the ring control method comprises the following steps:
in a first working state, a refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the second pressure regulating valve, the second condensing heat exchanger, the liquid storage device, the thermal expansion valve and the evaporating heat exchanger;
in a second working state, the refrigerant flows through the gas-liquid separator, the compressor, the electronic expansion valve and the evaporation heat exchanger;
in a third working state, the refrigerant flows through the differential pressure valve, the liquid storage device, the thermal expansion valve and the evaporation heat exchanger;
in a fourth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the liquid storage device, the thermostatic expansion valve and the evaporating heat exchanger;
in a fifth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the second pressure regulating valve, the second condensing heat exchanger, the liquid reservoir, the thermal expansion valve and the evaporating heat exchanger.
The technical scheme adopted by the invention has the beneficial effects that: by designing a multi-working-mode environment control method, the temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under high-temperature and low-temperature conditions are solved. The compressor is used for absorbing the refrigerant low-pressure steam in the gas-liquid separator and compressing the refrigerant low-pressure steam into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger to release heat. The accumulator is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing action of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flux of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of an environment control apparatus according to an embodiment of the present invention.
Fig. 2 is a second schematic structural diagram of the environmental control apparatus according to the embodiment of the present invention.
Fig. 3 is a third schematic structural diagram of an environmental control apparatus according to an embodiment of the present invention.
Fig. 4 is a fourth schematic structural diagram of the environmental control apparatus according to the embodiment of the present invention.
Fig. 5 is a fifth schematic structural diagram of the environmental control apparatus according to the embodiment of the present invention.
Fig. 6 is a sixth schematic structural diagram of an environmental control apparatus according to an embodiment of the present invention.
Fig. 7 is a seventh schematic structural diagram of an environmental control apparatus according to an embodiment of the present invention.
Fig. 8 is a schematic flowchart of a method for controlling a ring according to an embodiment of the present invention.
The reference numbers indicate: 1. a housing; 2. an evaporative heat exchanger; 3. a gas-liquid separator; 4. a compressor; 5. a first pressure regulating valve; 6. a second pressure regulating valve; 7. a first condensing heat exchanger; 8. A second condensing heat exchanger; 9. a reservoir; 10. a differential pressure valve; 11. a thermostatic expansion valve; 12. an electronic expansion valve; 13. a first pressure gauge; 14. a second pressure gauge; 15. a first check valve; 16. a second one-way valve; 17. a third check valve; 18. a pressure sensor; 19. drying the filter; 20. a liquid viewing mirror; 21. an electromagnetic valve; 22. an evaporation fan; 23. a condensing fan; 24. an air inlet surface of the condensing heat exchanger; 25. a ball valve; 26. an electric heater.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 to 7, an embodiment of the present invention provides an environment control apparatus, including: the heat exchanger comprises a shell 1, an evaporation heat exchanger 2, a gas-liquid separator 3, a compressor 4, a first pressure regulating valve 5, a second pressure regulating valve 6, a first condensation heat exchanger 7, a second condensation heat exchanger 8, a liquid storage device 9, a differential pressure valve 10, a thermal expansion valve 11 and an electronic expansion valve 12, wherein the evaporation heat exchanger 2, the gas-liquid separator 3, the compressor 4, the first pressure regulating valve 5, the second pressure regulating valve 6, the first condensation heat exchanger 7, the second condensation heat exchanger 8, a liquid storage device 9, the differential pressure valve 10, the thermal expansion valve 11 and the electronic expansion valve 12 are all installed in the shell 1, the evaporation heat exchanger 2 is connected with the gas-liquid separator 3 through a pipeline, the gas-liquid separator 3 is connected with the compressor 4 through a pipeline, the compressor 4 is connected with the first pressure regulating valve 5 and the second pressure regulating valve 6 through pipelines respectively, the first pressure regulating valve 5 is connected with the first condensation heat exchanger 7 through a pipeline, the second pressure regulating valve 6 is connected with the second condensation heat exchanger 8 through a pipeline, the first condensation heat exchanger 7 and the second pressure regulating valve 9 are connected with the first condensation heat exchanger through a differential pressure regulating valve 10, the other end of the liquid storage device is connected with the compressor 4 through a pipeline, the pressure regulating valve 9 and the electronic expansion valve 12, the other end of the liquid storage device is connected with the evaporation heat exchanger through a pipeline 9, the other end of the electronic expansion valve 12 is connected with the pipeline between the thermostatic expansion valve 11 and the evaporation heat exchanger 2 through a pipeline.
The technical scheme adopted by the invention has the beneficial effects that: the compressor is used for absorbing the refrigerant low-pressure vapor in the gas-liquid separator and compressing the refrigerant low-pressure vapor into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing and releasing heat of high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger. The liquid storage device is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing action of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flux of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
Wherein arrows in the figure represent the flow direction and the flow trajectory of the refrigerant. Arrows near the wind turbine represent the direction of the wind flow and the flow trajectory. The circle on the line represents off.
As shown in fig. 1 to 7, further, a first pressure gauge 13 is installed on a pipeline between the gas-liquid separator 3 and the compressor 4, a second pressure gauge 14 and a first check valve 15 are installed on a pipeline between the compressor 4 and the first pressure regulating valve 5, a second check valve 16 is installed on a pipeline between the first condensing heat exchanger 7 and the liquid reservoir 9, a third check valve 17 is installed on a pipeline between the second condensing heat exchanger 8 and the liquid reservoir 9, and a pressure sensor 18 is installed in the liquid reservoir 9.
The beneficial effect of adopting the further technical scheme is that: the pressure gauge is arranged, so that the pressure at the corresponding position can be conveniently detected. The setting of check valve is convenient for be used for opening according to actual need and stops corresponding pipeline. The pressure sensor is arranged, so that the pressure of the liquid storage device can be conveniently detected.
Wherein, the first manometer is the low-pressure gauge, and the second manometer is the high-pressure gauge.
As shown in fig. 1 to 7, a dry filter 19, a sight glass 20 and an electromagnetic valve 21 are further installed on a pipeline between the reservoir 9 and the thermal expansion valve 11, the dry filter 19 is adjacent to the reservoir 9, the electromagnetic valve 21 is adjacent to the thermal expansion valve 11, and the sight glass 20 is located between the dry filter 19 and the electromagnetic valve 21.
The beneficial effect of adopting the further technical scheme is that: the drying filter is used for drying the coolant. The liquid sight glass is used for observing the state of the coolant in the pipeline. The solenoid valve is used for opening and closing the corresponding pipeline.
As shown in fig. 1 to 7, further, an evaporation fan 22 is installed adjacent to the evaporation heat exchanger 2, and a condensation fan 23 is installed adjacent to the first condensation heat exchanger 7 and the second condensation heat exchanger 8.
The beneficial effect of adopting the further technical scheme is that: the condensing fan has stepless speed regulation of wind speed, and the speed regulation of the fan is regulated according to the condensing pressure in the liquid storage device. The arrangement of the evaporation fan improves the heat exchange efficiency of the evaporation heat exchanger. The setting of condensation fan improves condensation heat exchanger's heat exchange efficiency.
The condensing fan has stepless speed regulation of wind speed, and the speed regulation of the fan is regulated according to the condensing pressure in the liquid storage device.
As shown in fig. 1 to 7, further, the first condensing heat exchanger 7 and the second condensing heat exchanger 8 are installed at the bottom of one end of the bottom of the shell 1, the first condensing heat exchanger 7 is located above the second condensing heat exchanger 8, a condensing heat exchanger air inlet surface 24 is installed at the bottom of one end of the shell 1, and the condensing heat exchanger air inlet surface 24 is adjacent to the first condensing heat exchanger 7 and the second condensing heat exchanger 8; the condensing fan 23 is located at one side of the bottom of the housing 1.
The beneficial effect of adopting the further technical scheme is that: the position setting of condensation heat exchanger and condensation fan, the installation and the maintenance of the environmental control equipment of being convenient for.
As shown in fig. 1 to 7, further, the evaporation fan 22 is located at the top of the housing 1, the evaporation heat exchanger 2 is located below the evaporation fan 22, the thermostatic expansion valve 11 and the electronic expansion valve 12 are located at one side of the evaporation fan 22, the gas-liquid separator 3, the reservoir 9 and the compressor 4 are located below the evaporation heat exchanger 2, and the first pressure regulating valve 5, the second pressure regulating valve 6 and the differential pressure valve 10 are all adjacent to the reservoir 9.
The beneficial effect of adopting the further technical scheme is that: the installation position design of each part improves the compact type of the environmental control equipment, reduces the space occupancy rate of the environmental control equipment and is convenient for the installation and maintenance of the environmental control equipment.
As shown in fig. 1 to 7, a ball valve 25 is connected to one end of the differential pressure valve 10, and the ball valve 25 is connected to a pipeline between the compressor 4 and the first pressure regulating valve 5.
The beneficial effect of adopting the further technical scheme is that: the setting of ball valve is convenient for opening of differential pressure valve pipeline and is stopped.
As shown in fig. 1 to 7, crankshaft heating belts are respectively mounted on the compressor 4, the accumulator 9, and the gas-liquid separator 3, and an electric heater 26 is mounted on the evaporation heat exchanger 2.
The beneficial effect of adopting the further technical scheme is that: the crankshaft heating belt is arranged, the device is preheated after being electrified, the heating temperature is guaranteed not to exceed 25 ℃ through the temperature controller, the initial temperature of a system refrigerant in a low-temperature environment is increased, and meanwhile, liquid impact of a compressor is prevented. When the temperature of the air flowing through the evaporation heat exchanger is lower than a set value, the electric heater is turned on to heat the air, and then the electronic equipment is preheated.
A compressor, a liquid storage device and a gas-liquid separator in the system (environment control equipment) are respectively provided with a crankshaft heating belt. The equipment is preheated after being electrified, the heating temperature is guaranteed not to exceed 25 ℃ through the temperature controller, the initial temperature of the system refrigerant in the low-temperature environment is increased, and meanwhile, liquid impact of the compressor is prevented.
Low temperature preheating technology
Electric heaters utilize the joule effect of electric current to convert electrical energy into heat energy to heat air flowing through the heater. The electric heater can be an electric heating pipe which is a common electric heating mode, the electric heating pipe is formed by wrapping magnesium powder by an electric heating wire and then sleeving a stainless steel pipe, and the electric heater has the advantages of small heat resistance and high heat exchange efficiency and is an automatic constant-temperature and power-saving heater. The electric heating tube has the following advantages: the service life is long, the temperature regulation is carried out according to the material characteristics of the product, and the heating control is carried out without temperature feedback, so that the service life of the product is far longer than that of other heaters.
The electric heater is penetrated in the evaporation heat exchanger, and when the temperature of air flowing through the evaporation heat exchanger is lower than a set value, the electric heater is turned on to heat the air, so that electronic equipment is preheated.
An environment control device relates to the environment control technology of electronic equipment driven by a compressor, is wide temperature range environment control equipment, and can simultaneously solve the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature.
The environmental temperature is controlled from-40 ℃ to 50 ℃ in the whole temperature range, and the problems of heat dissipation and low-temperature starting of the electronic equipment are solved. Mainly structurally comprises: the system comprises a compressor, a condensing heat exchanger, an evaporating fan, a condensing fan, an electric heating pipe, a liquid storage device, a gas-liquid separator, an electromagnetic valve, a thermal expansion valve, an electronic expansion valve, a drying filter, a condensing pressure regulating valve and the like.
In addition, the invention also provides an environmental control system which comprises any one of the environmental control equipment.
The technical scheme adopted by the invention has the beneficial effects that: the compressor is used for absorbing the refrigerant low-pressure vapor in the gas-liquid separator and compressing the refrigerant low-pressure vapor into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing and releasing heat of high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger. The liquid storage device is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature low-pressure gas-liquid mixture under the throttling and pressure reducing effects of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flux of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
As shown in fig. 8, in addition, the present invention also provides a ring control method, based on the above ring control system, the ring control method includes:
s1, in a first working state, a refrigerant flows through a gas-liquid separator, a compressor, a first pressure regulating valve, a first condensing heat exchanger, a second pressure regulating valve, a second condensing heat exchanger, a liquid storage device, a thermal expansion valve and an evaporating heat exchanger;
s2, in a second working state, the refrigerant flows through the gas-liquid separator, the compressor, the electronic expansion valve and the evaporation heat exchanger;
s3, in a third working state, the refrigerant flows through the differential pressure valve, the liquid storage device, the thermal expansion valve and the evaporation heat exchanger;
s4, in a fourth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the liquid storage device, the thermostatic expansion valve and the evaporation heat exchanger;
and S5, in a fifth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the second pressure regulating valve, the second condensing heat exchanger, the liquid storage device, the thermal expansion valve and the evaporating heat exchanger.
The technical scheme adopted by the invention has the beneficial effects that: by designing a multi-working-mode environment control method, the temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under high-temperature and low-temperature conditions are solved. The compressor is used for absorbing the refrigerant low-pressure vapor in the gas-liquid separator and compressing the refrigerant low-pressure vapor into high-temperature high-pressure gas. The condensing heat exchanger is used for condensing and releasing heat of high-temperature and high-pressure refrigerant gas entering the condensing heat exchanger. The liquid storage device is used for collecting liquid refrigerant. The thermostatic expansion valve is used for changing the liquid refrigerant into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing action of the thermostatic expansion valve. The evaporation heat exchanger is used for absorbing heat by vaporization of refrigerant liquid and absorbing heat of air passing through the evaporation heat exchanger. The electronic expansion valve is a regulating device for the bypass flux of hot gas. The temperature of the space where the electronic equipment is located is controlled, and the problems of heat dissipation and low-temperature starting of the electronic equipment under the conditions of high temperature and low temperature are solved.
The full-temperature-range refrigeration technology is as follows:
as shown in fig. 1, under normal working conditions and high temperature conditions (0 ℃ to 50 ℃), corresponding to the first working state, when the compressor works, the refrigerant low-pressure steam in the gas-liquid separator is absorbed and compressed into high-temperature high-pressure gas, and the high-temperature high-pressure gas enters the first condensing heat exchanger and the second condensing heat exchanger; condensing the high-temperature high-pressure refrigerant gas entering the condensing heat exchanger in the condensing heat exchanger to release heat and change the refrigerant gas into liquid with certain supercooling degree; the liquid refrigerant is collected in the liquid storage device, sequentially and respectively passes through the drying filter, the liquid sight glass, the electromagnetic valve and the thermostatic expansion valve, and is changed into a low-temperature and low-pressure gas-liquid mixture under the throttling and pressure reducing effects of the thermostatic expansion valve; the low-temperature and low-pressure gas-liquid mixture enters the evaporation heat exchanger, the refrigerant liquid is vaporized to absorb heat, the heat of the air passing through the evaporation heat exchanger is absorbed, and the air enters the gas-liquid separator again to enter the next refrigeration cycle.
As shown in fig. 1, in the refrigeration system, corresponding to the second operating state, an electronic expansion valve is disposed between the compressor exhaust line and the line entering the evaporation heat exchanger, and is used as a device for adjusting the hot gas bypass, and the difference between the actual air supply temperature and the set temperature and the variation trend thereof are used as the basis for judgment, and the hot gas bypass is adjusted by using an intelligent PID (proportional-integral-derivative) control means, so as to finally realize the control of the air supply temperature.
Under the working condition of low temperature and strong wind (-40 ℃ -0 ℃), the condensation pressure in front of the thermostatic expansion valve is too low under the conditions of too low external environment temperature and strong wind, so that the flow of refrigerant flowing through the thermostatic expansion valve is not enough to cause the fault of a refrigeration system, and the following measures are adopted in the system design to jointly realize low-temperature refrigeration: 1 pressure difference valve, 2 condensation pressure regulating valves and 2 condensation heat exchangers are arranged.
The first pressure regulating valve and the second pressure regulating valve are set to different opening pressures, for example, the first pressure regulating valve is set to a first preset pressure, which may be 8bar, and the second pressure regulating valve is set to a second preset pressure, which may be 14bar. In the third working state under any environment, when the condensation pressure of the system (environment control equipment) is lower than 8bar after the compressor is started, the refrigerant of the system flows to the figure 2, no condensation heat dissipation exists in the mode, and the temperature and the pressure of the refrigerant are increased sharply along with the work of the compressor.
And in the fourth working state, the condensing pressure continuously rises along with the continuous operation of the refrigeration system, when the pressure reaches 8-14 bar, the refrigerant of the system flows to a position shown in figure 3, in the mode, the first pressure regulating valve is opened, the first condensing heat exchanger dissipates heat, and the temperature of the refrigerant continuously rises along with the work of the compressor.
And in a fifth working state, the operation is continued, the condensing pressure is continuously increased, when the pressure reaches more than 14bar, the refrigerant of the system flows to a figure 4, in the mode, the first pressure regulating valve and the second pressure regulating valve are both opened, the first condensing heat exchanger and the second condensing heat exchanger radiate heat at the same time, the pressure of the system is normal, and the compressor works normally in a refrigerating mode.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions recorded in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An environmental control apparatus, comprising: a shell, an evaporation heat exchanger, a gas-liquid separator, a compressor, a first pressure regulating valve, a second pressure regulating valve, a first condensation heat exchanger, a second condensation heat exchanger, a liquid storage device, a differential pressure valve, a thermal expansion valve and an electronic expansion valve, the evaporation heat exchanger, the gas-liquid separator, the compressor, the first pressure regulating valve, the second pressure regulating valve, the first condensing heat exchanger, the second condensing heat exchanger, the liquid reservoir, the differential pressure valve, the thermostatic expansion valve and the electronic expansion valve are all arranged in the shell, the evaporation heat exchanger is connected with the gas-liquid separator through a pipeline, the gas-liquid separator is connected with the compressor through a pipeline, the compressor is respectively connected with the first pressure regulating valve and the second pressure regulating valve through pipelines, the first pressure regulating valve is connected with the first condensing heat exchanger through a pipeline, the second pressure regulating valve is connected with the second condensing heat exchanger through a pipeline, the first condensation heat exchanger and the second condensation heat exchanger are respectively connected with the liquid storage device through pipelines, one end of the differential pressure valve is connected with a pipeline between the compressor and the first pressure regulating valve through a pipeline, the other end of the differential pressure valve is connected with the liquid storage device through a pipeline, the liquid storage device is connected with the thermostatic expansion valve through a pipeline, the thermostatic expansion valve is connected with the evaporation heat exchanger through a pipeline, one end of the electronic expansion valve is connected with the pipeline between the compressor and the first pressure regulating valve through a pipeline, the other end of the electronic expansion valve is connected with the pipeline between the thermostatic expansion valve and the evaporation heat exchanger through a pipeline.
2. The environmental control equipment according to claim 1, wherein a first pressure gauge is installed on a pipeline between the gas-liquid separator and the compressor, a second pressure gauge and a first check valve are installed on a pipeline between the compressor and the first pressure regulating valve, a second check valve is installed on a pipeline between the first condensing heat exchanger and the liquid reservoir, a third check valve is installed on a pipeline between the second condensing heat exchanger and the liquid reservoir, and a pressure sensor is installed in the liquid reservoir.
3. The environmental control equipment according to claim 1, wherein a dry filter, a sight glass and a solenoid valve are installed on a pipeline between the liquid reservoir and the thermostatic expansion valve, the dry filter is adjacent to the liquid reservoir, the solenoid valve is adjacent to the thermostatic expansion valve, and the sight glass is located between the dry filter and the solenoid valve.
4. The environmental control apparatus according to claim 1, wherein an evaporation fan is installed adjacent to the evaporation heat exchanger, and a condensation fan is installed adjacent to the first condensation heat exchanger and the second condensation heat exchanger.
5. The environmental control equipment according to claim 4, wherein the first condensing heat exchanger and the second condensing heat exchanger are installed at the bottom of one end of the bottom of the shell, the first condensing heat exchanger is located above the second condensing heat exchanger, the bottom of one end of the shell is provided with an air inlet surface of the condensing heat exchanger, and the air inlet surface of the condensing heat exchanger is adjacent to the first condensing heat exchanger and the second condensing heat exchanger; the condensation fan is positioned on one side of the bottom of the shell.
6. The environmental control apparatus according to claim 5, wherein the evaporation fan is located at a top of the housing, the evaporation heat exchanger is located below the evaporation fan, the thermal expansion valve and the electronic expansion valve are located at one side of the evaporation fan, the gas-liquid separator, the liquid reservoir and the compressor are located below the evaporation heat exchanger, and the first pressure regulating valve, the second pressure regulating valve and the differential pressure valve are all adjacent to the liquid reservoir.
7. The environmental control apparatus according to claim 1, wherein a ball valve is connected to one end of the differential pressure valve, and the ball valve is connected to a pipe between the compressor and the first pressure regulating valve through a pipe.
8. The environmental control equipment according to claim 1, wherein the compressor, the reservoir and the gas-liquid separator are respectively provided with a crankshaft heating belt, and the evaporation heat exchanger is provided with an electric heater.
9. An environmental control system comprising an environmental control apparatus according to any one of claims 1 to 8.
10. A method for controlling a ring system according to claim 9, the method comprising:
in a first working state, a refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the second pressure regulating valve, the second condensing heat exchanger, the liquid storage device, the thermal expansion valve and the evaporating heat exchanger;
in a second working state, the refrigerant flows through the gas-liquid separator, the compressor, the electronic expansion valve and the evaporation heat exchanger;
in a third working state, the refrigerant flows through the differential pressure valve, the liquid storage device, the thermal expansion valve and the evaporation heat exchanger;
in a fourth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the liquid storage device, the thermostatic expansion valve and the evaporating heat exchanger;
in a fifth working state, the refrigerant flows through the gas-liquid separator, the compressor, the first pressure regulating valve, the first condensing heat exchanger, the second pressure regulating valve, the second condensing heat exchanger, the liquid storage device, the thermostatic expansion valve and the evaporating heat exchanger.
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| EP0916914A2 (en) * | 1997-11-14 | 1999-05-19 | TGK CO., Ltd. | A refrigerating cycle |
| US20160334143A1 (en) * | 2015-05-12 | 2016-11-17 | Shanghai Ocean University | Switchable two-stage and cascade marine energy-saving ultralow-temperature refrigeration system |
| CN110726263A (en) * | 2019-10-10 | 2020-01-24 | 合肥天鹅制冷科技有限公司 | Wide-temperature high-precision refrigerating device |
| CN111503913A (en) * | 2020-05-25 | 2020-08-07 | 合肥天鹅制冷科技有限公司 | Double-mechanism ultralow-temperature refrigeration vehicle-mounted refrigeration system |
| CN113803896A (en) * | 2021-10-21 | 2021-12-17 | 合肥天鹅制冷科技有限公司 | Wide-temperature high-precision cold liquid refrigerating system |
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2022
- 2022-08-03 CN CN202210926353.9A patent/CN115500049A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0916914A2 (en) * | 1997-11-14 | 1999-05-19 | TGK CO., Ltd. | A refrigerating cycle |
| US20160334143A1 (en) * | 2015-05-12 | 2016-11-17 | Shanghai Ocean University | Switchable two-stage and cascade marine energy-saving ultralow-temperature refrigeration system |
| CN110726263A (en) * | 2019-10-10 | 2020-01-24 | 合肥天鹅制冷科技有限公司 | Wide-temperature high-precision refrigerating device |
| CN111503913A (en) * | 2020-05-25 | 2020-08-07 | 合肥天鹅制冷科技有限公司 | Double-mechanism ultralow-temperature refrigeration vehicle-mounted refrigeration system |
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