CN108344122A - High-temperature air conditioner cryogenic refrigeration operating system - Google Patents
High-temperature air conditioner cryogenic refrigeration operating system Download PDFInfo
- Publication number
- CN108344122A CN108344122A CN201810324234.XA CN201810324234A CN108344122A CN 108344122 A CN108344122 A CN 108344122A CN 201810324234 A CN201810324234 A CN 201810324234A CN 108344122 A CN108344122 A CN 108344122A
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- China
- Prior art keywords
- compressor
- pressure controller
- contact
- liquid storage
- storage device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000009833 condensation Methods 0.000 claims abstract description 24
- 230000005494 condensation Effects 0.000 claims abstract description 24
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 230000008020 evaporation Effects 0.000 claims abstract description 4
- 239000003507 refrigerant Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 4
- 206010020852 Hypertonia Diseases 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of high-temperature air conditioner cryogenic refrigeration operating systems, include compressor, evaporation fan, evaporator, expansion valve, filter, liquid storage device, condenser, condensation fan, the A.C. contactor KM1 of compressor, the A.C. contactor KM2 of condensation fan and time relay KT；Middle pressure pressure controller is installed in the connecting pipe between condenser and liquid storage device, low pressure controller is installed in the muffler of compressor, high-pressure controller is installed in the exhaust pipe of compressor.The present invention improves the applicability of system, ensure that the condensing pressure of system, solve environment temperature it is too low when, the problem of low pressure controller is off down, and system cannot start.
Description
Technical field
The present invention relates to air-conditioning refrigeration system and control technology field, specifically a kind of high-temperature air conditioner cryogenic refrigeration operation system
System.
Background technology
Standby, industry, power plant, oil drilling are installed in the carryings such as vehicle-mounted, airborne for executing the tasks such as transport, communication, detection
The equipment machine rooms such as platform usually all work in the high temperature environment, need it is mating adapt to its working environment Special high-temperature air-conditioning be
Its temperature control.And certain computer rooms, carrying install standby electronics cabin, laser installation is set, and work as environment temperature（Usually 18 DEG C with
Under）When relatively low, the cabin heater element heat to be cooled down is larger, it is still necessary to air conditioner refrigerating, to cool down to computer room, cabin.
When conventional high-temperature air conditioner product works at normal temperatures, can be adjusted by fluid reservoir, but when environment temperature is relatively low still after
Continuous refrigeration will result in evaporimeter frosting, freeze, or even compressor " liquid hammer " can be caused to damage, and influence unit normal use.
Therefore, when high-temperature air conditioner cryogenic refrigeration is run, i.e., high-temperature air conditioner can be reliably operated under cryogenic refrigeration operating mode again,
Must reliable design refrigeration system and take the control measure adaptable with it.
Invention content
The object of the present invention is to provide a kind of high-temperature air conditioner cryogenic refrigeration operating system, high-temperature air conditioner cryogenic refrigeration is run,
It takes and one liquid storage device is installed in the outlet of air-conditioning refrigeration system condenser, to improve the applicability of system；It takes and is in refrigeration
One middle pressure pressure controller is installed in system between condenser and liquid storage device and controls condensation fan, to ensure the condensation pressure of system
Power；Take the delay of one time relay KT of contact shunt for the low pressure controller installed in compressor return air pipe disconnected
Open contact, with solve environment temperature it is too low when, the problem of low pressure controller is off down, and system cannot start.
Technical scheme is as follows：
A kind of high-temperature air conditioner cryogenic refrigeration operating system, include compressor, evaporation fan, evaporator, expansion valve, filter,
Liquid storage device, condenser, condensation fan, the A.C. contactor KM1 of compressor, the A.C. contactor KM2 of condensation fan and time after
Electric appliance KT, it is characterised in that：From the outlet introduction pipe of the liquid storage device, and it is sequentially connected the filter, expansion valve, steaming
After sending out device, compressor and condenser, the import of the liquid storage device is accessed, closed refrigeration system is formed；The liquid storage device with
Middle pressure pressure controller is installed in the connecting pipe between the condenser, low pressure is installed in the muffler of the compressor
Pressure controller is equipped with high-pressure controller in the exhaust pipe of compressor；
The A.C. contactor KM1 of the contact of the high-pressure controller, the contact of low pressure controller and the compressor
Coil be in series successively after external power supply, the A.C. contactor of the contact of medium pressure pressure controller and the condensation fan
KM2 is in series be in parallel again with the coil of the time relay KT after coil with the A.C. contactor KM1 of the compressor
It is in parallel, the delay break contact of the time relay KT and the contact of the low pressure controller are in parallel.
The high-temperature air conditioner cryogenic refrigeration operating system, it is characterised in that：The liquid storage device, filter, expansion valve,
Evaporator, compressor and condenser are sequentially connected by copper pipe.
The high-temperature air conditioner cryogenic refrigeration operating system, it is characterised in that：Circulation has R134a in the refrigeration system
High temperature environment-friendly type refrigerant.
A liquid storage device is installed in the outlet of condenser of the present invention, when thermic load reduces or environment temperature is relatively low, refrigerant
Evaporating completely is unable in evaporator, it is extra in low temperature Space-Time Modulation cold system refrigerant to cause, and may thus have refrigeration
Agent liquid and refrigerant gas are mixed into compressor, so to freeze into an installation liquid storage device, storing liquid before evaporator
Agent prevents liquid refrigerant from entering compressor air suction chamber, punctures suction valve chip, i.e., " liquid hammer ", and causes compressor damage.Therefore
A liquid storage device is added in refrigeration systems, it is ensured that when acute variation occurs for cooling condition, can store certain refrigeration
Agent, to systems stabilisation pressure.Therefore, for the system of wide cut temperature change and load variations, setting liquid storage device can improve
The adaptability of refrigeration system.
One middle pressure pressure controller is installed in the outlet of condenser, condensing pressure to experience, is controlled to middle pressure pressure
A desired value is arranged in device（It can be configured according to different use environments）, air conditioning chamber's condensed exterior wind turbine is controlled, i.e., by middle pressure
Pressure controller seals in the control loop of A.C. contactor KM2 of condensation fan.When environment temperature is suitable, condensing pressure is higher than
When middle pressure pressure controller setting value, the contact of middle pressure pressure controller is in normally off, condensation fan normal work；When outer
Environment temperature is relatively low, and when condensing pressure is less than middle pressure pressure controller setting value, the contact of middle pressure pressure controller, which is in, to be disconnected
State, condensation fan are stopped, when condensing pressure is restored to the setting value of middle pressure pressure controller or more, middle pressure pressure control
Normally off is restored in the contact of device processed, and condensation fan is started to work again.Therefore, condensation fan is controlled by middle pressure pressure controller
Start-stop, ensure that the condensing pressure of system in a suitable value.
Meanwhile one time relay KT of the contact shunt for the low pressure controller installed in compressor return air pipe
Be delayed break contact, and when environment temperature is too low, the contact of low pressure controller can be off, when booting, system
It cannot start.The delay break contact of one time relay KT of parallel connection, compressor on the contact of low pressure controller
Control circuit connected by the delay break contact of time relay KT, compressor start.When the delay of time relay KT
Between can be adjusted according to different types, the pressure of general compressor operating 1min or so, system will be set up.Low pressure
To come up, the contact of low pressure controller will be closed, at this point, when the delay break contact of time relay KT disconnects, pressure
The control circuit of contracting machine will form access by the contact closure of low pressure controller, and compressor continues to run with.
In high-temperature severe environment, the pressure of system can increase for air-conditioning work, to prevent refrigeration system hypertonia, damage
Compressor is provided with high-pressure controller, when the pressure of system is more than the setting value of high-pressure controller, stops compressing
Machine.
Beneficial effects of the present invention：
1, the present invention by the refrigeration system of reliable design and takes the control measure adaptable with it so that high-temperature air conditioner energy
It is run in cryogenic refrigeration, realizes high/low temperature all-in-one machine.
2, the present invention takes installs a liquid storage device in the outlet of air-conditioning refrigeration system condenser；It takes in refrigeration systems
One middle pressure pressure controller is installed between condenser and liquid storage device and controls condensation fan；It takes and is installed in compressor return air pipe
Low pressure controller contact on one time relay KT of parallel connection delay break contact, it is too low to solve environment temperature
When, the problem of low pressure controller is off, and system cannot start.
3, the configuration of the present invention is simple, failure rate are low, safe and reliable, at low cost, therefore, economy, highly practical.
4, Optimized Matching of the present invention by refrigeration system and effective control measure, improve that temperature change is big and load
Change the adaptability of big refrigeration system.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is electrical schematic diagram of the present invention.
Specific implementation mode
Referring to Fig. 1,2, a kind of high-temperature air conditioner cryogenic refrigeration operating system includes compressor 1, evaporation fan 2, evaporator
3, A.C. contactor KM1 14, the condensating wind of expansion valve 4, filter 5, liquid storage device 6, condenser 7, condensation fan 9, compressor 1
The A.C. contactor KM2 13 and time relay KT 12 of machine 9, from the outlet introduction pipe of liquid storage device 6, and are sequentially connected filtering
After device 5, expansion valve 4, evaporator 3, compressor 1 and condenser 7, the import of liquid storage device 6 is accessed, closed refrigeration system is formed；
Middle pressure pressure controller 8 is installed in the connecting pipe between liquid storage device 6 and condenser 7, is equipped in the muffler of compressor 1
Low pressure controller 10 is equipped with high-pressure controller 11 in the exhaust pipe of compressor 1；
The A.C. contactor KM1 14 of the contact of high-pressure controller 11, the contact of low pressure controller 10 and compressor 1
Coil be in series successively after external power supply, the contact of middle pressure pressure controller 8 and the A.C. contactor KM2 13 of condensation fan 9
It is in series after being in parallel again with the coil of time relay KT 12 with the coil of the A.C. contactor KM1 14 of compressor 1 phase simultaneously
Connection, the contact of the delay break contact and low pressure controller 10 of time relay KT 12 is in parallel.
In the present invention, liquid storage device 6, filter 5, expansion valve 4, evaporator 3, compressor 1 and condenser 7 by copper pipe successively
Connection.
Circulation has R134a high temperature environment-friendly type refrigerants in refrigeration system.
Middle pressure pressure controller 8 is inserted in out in the copper pipe of the outlet of condenser 7, is welded to the soldering item of silver content 15% and is
In system, the contact of middle pressure pressure controller 8 is serially connected in the control circuit of A.C. contactor KM2 13 of condensation fan 9.
Low pressure controller 10 is inserted in the copper pipe of 1 gas returning port of compressor, is welded to the soldering item of silver content 15% and is
It is in system, low pressure controller 10 is in parallel with the delay break contact of time relay KT 12.
A liquid storage device 6 is installed in the outlet of condenser 7 of the present invention, when thermic load reduces or environment temperature is relatively low, refrigeration
Agent is unable to evaporating completely in evaporator 3, and it is extra in low temperature Space-Time Modulation cold system refrigerant to cause, and may thus have system
Cryogen liquid and refrigerant gas are mixed into compressor 1, so will be into installing a liquid storage device 6, storing liquid before evaporator 3
Refrigerant prevents liquid refrigerant from entering the suction muffler of compressor 1, punctures suction valve chip, i.e., " liquid hammer ", and causes compressor 1
Damage.Therefore a liquid storage device 6 is added in refrigeration systems, it is ensured that when acute variation occurs for cooling condition, can store
Certain refrigerant, to systems stabilisation pressure.Therefore, for the system of wide cut temperature change and load variations, liquid storage is set
Device 6 can improve the adaptability of refrigeration system.
One middle pressure pressure controller 8 is installed in the outlet of condenser 7, condensing pressure to experience, gives middle pressure pressure control
A desired value is arranged in device 8 processed（It can be configured according to different use environments）, air conditioning chamber's condensed exterior wind turbine 9 is controlled, i.e., will
Middle pressure pressure controller 8 seals in the control loop of A.C. contactor KM2 13 of condensation fan 9.It is cold when environment temperature is suitable
When solidifying pressure is higher than middle 8 setting value of pressure pressure controller, the contact of middle pressure pressure controller 8 is in normally off, condensation fan 9
Normal work；When external environment temperature is relatively low, and condensing pressure is less than middle 8 setting value of pressure pressure controller, middle pressure pressure controller 8
Contact be off, condensation fan 9 is stopped, when condensing pressure is restored to the setting value of middle pressure pressure controller 8
When above, normally off is restored in the contact of middle pressure pressure controller 8, and condensation fan 9 is started to work again.Therefore, it is pressed by middle pressure
Force controller 8 controls the start-stop of condensation fan 9, ensure that the condensing pressure of system in a suitable value.
Meanwhile one time relay of the contact shunt for the low pressure controller 10 installed in 1 muffler of compressor
The delay break contact of KT 12, when environment temperature is too low, the contact of low pressure controller 10 can be off, and be opened
When machine, system cannot start.The delay of one time relay KT 12 of parallel connection is disconnected on the contact of low pressure controller 10
Contact is opened, the control circuit of compressor 1 is connected by the delay break contact of time relay KT 12, and compressor 1 starts.When
Between the delay time of relay KT 12 can be adjusted according to different types, general compressor 1 runs 1min or so, the pressure of system
Power will be set up.Come on low pressure, the contact of low pressure controller 10 will be closed, at this point, working as the time relay
When the delay break contact of KT 12 disconnects, the control circuit of compressor 1 will by the contact closure of low pressure controller 10,
Access is formed, compressor 1 continues to run with.
In high-temperature severe environment, the pressure of system can increase for air-conditioning work, to prevent refrigeration system hypertonia, damage
Compressor 1 is provided with high-pressure controller 11, when the pressure of system is more than the setting value of high-pressure controller 11, stops
Compressor 1.
Above example is not limited only to protection scope of the present invention, all to be repaiied based on basic thoughts of the invention
Change or what is changed belongs to protection scope of the present invention.
Claims (3)
1. a kind of high-temperature air conditioner cryogenic refrigeration operating system includes compressor, evaporation fan, evaporator, expansion valve, filtering
Device, liquid storage device, condenser, condensation fan, the A.C. contactor KM1 of compressor, the A.C. contactor KM2 of condensation fan and time
Relay KT, it is characterised in that：From the outlet introduction pipe of the liquid storage device, and be sequentially connected the filter, expansion valve,
After evaporator, compressor and condenser, the import of the liquid storage device is accessed, forms closed refrigeration system；The condenser
Middle pressure pressure controller is installed in the connecting pipe between the liquid storage device, is equipped in the muffler of the compressor low
Pressure pressure controller is equipped with high-pressure controller in the exhaust pipe of compressor；
The A.C. contactor KM1 of the contact of the high-pressure controller, the contact of low pressure controller and the compressor
Coil be in series successively after external power supply, the A.C. contactor of the contact of medium pressure pressure controller and the condensation fan
KM2 is in series be in parallel again with the coil of the time relay KT after coil with the A.C. contactor KM1 of the compressor
It is in parallel, the delay break contact of the time relay KT and the contact of the low pressure controller are in parallel.
2. high-temperature air conditioner cryogenic refrigeration operating system according to claim 1, it is characterised in that：The liquid storage device, mistake
Filter, expansion valve, evaporator, compressor and condenser are sequentially connected by copper pipe.
3. high-temperature air conditioner cryogenic refrigeration operating system according to claim 1, it is characterised in that：In the refrigeration system
Circulation has R134a high temperature environment-friendly type refrigerants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324234.XA CN108344122A (en) | 2018-04-12 | 2018-04-12 | High-temperature air conditioner cryogenic refrigeration operating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324234.XA CN108344122A (en) | 2018-04-12 | 2018-04-12 | High-temperature air conditioner cryogenic refrigeration operating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108344122A true CN108344122A (en) | 2018-07-31 |
Family
ID=62958064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810324234.XA Withdrawn CN108344122A (en) | 2018-04-12 | 2018-04-12 | High-temperature air conditioner cryogenic refrigeration operating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108344122A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
| CN110542172A (en) * | 2019-09-24 | 2019-12-06 | 合肥天鹅制冷科技有限公司 | Secondary low-voltage protection device of ultra-high temperature air conditioner |
| CN110749038A (en) * | 2019-10-12 | 2020-02-04 | 合肥天鹅制冷科技有限公司 | Anti-freezing control system of high-temperature air conditioner |
| CN111823824A (en) * | 2020-08-13 | 2020-10-27 | 合肥天鹅制冷科技有限公司 | Anti-freezing control system of vehicle-mounted air conditioner |
-
2018
- 2018-04-12 CN CN201810324234.XA patent/CN108344122A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
| CN110542172A (en) * | 2019-09-24 | 2019-12-06 | 合肥天鹅制冷科技有限公司 | Secondary low-voltage protection device of ultra-high temperature air conditioner |
| CN110542172B (en) * | 2019-09-24 | 2024-03-29 | 合肥天鹅制冷科技有限公司 | Two-stage low-voltage protection device of ultra-high temperature air conditioner |
| CN110749038A (en) * | 2019-10-12 | 2020-02-04 | 合肥天鹅制冷科技有限公司 | Anti-freezing control system of high-temperature air conditioner |
| CN111823824A (en) * | 2020-08-13 | 2020-10-27 | 合肥天鹅制冷科技有限公司 | Anti-freezing control system of vehicle-mounted air conditioner |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180731 |
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| WW01 | Invention patent application withdrawn after publication |