CN208139529U - High-temperature air conditioner cryogenic refrigeration operating system - Google Patents
High-temperature air conditioner cryogenic refrigeration operating system Download PDFInfo
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- CN208139529U CN208139529U CN201820514007.9U CN201820514007U CN208139529U CN 208139529 U CN208139529 U CN 208139529U CN 201820514007 U CN201820514007 U CN 201820514007U CN 208139529 U CN208139529 U CN 208139529U
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Abstract
The utility model discloses a kind of high-temperature air conditioner cryogenic refrigeration operating systems, include the A.C. contactor KM2 and time relay KT of compressor, evaporation fan, evaporator, expansion valve, filter, liquid storage device, condenser, condensation fan, the A.C. contactor KM1 of compressor, condensation fan；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 utility model 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 in an off state down, and system cannot start.
Description
Technical field
The utility model relates to air-conditioning refrigeration system and control technology field, specifically a kind of high-temperature air conditioner cryogenic refrigeration fortune
Row system.
Background technique
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 temperature, 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 will cause compressor " liquid hammer " damage, influence unit normal use.
Therefore, when high-temperature air conditioner cryogenic refrigeration is run, i.e., high-temperature air conditioner can reliably work under cryogenic refrigeration operating condition again,
Must reliable design refrigeration system and take the control measure adaptable with it.
Utility model content
The purpose of the utility model is to provide a kind of high-temperature air conditioner cryogenic refrigeration operating system, high-temperature air conditioner cryogenic refrigeration fortune
Row is taken and installs a liquid storage device in the outlet of air-conditioning refrigeration system condenser, to improve the applicability of system；It takes and is freezing
One middle pressure pressure controller is installed between condenser and liquid storage device in system and controls condensation fan, to guarantee 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 in an off state down, and system cannot start.
The technical solution of the utility model is as follows：
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 liquid storage device
Middle pressure pressure controller is installed in the connecting pipe between the condenser, 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 of the contact of the high-pressure controller, the contact of low pressure controller and the compressor
External power supply after the coil of KM1 is successively connected in series, the contact of medium pressure pressure controller connect with exchanging for the condensation fan
Tentaculum KM2 is connected in series be in parallel again with the coil of the time relay KT after with the A.C. contactor KM1's of the compressor
Coil is in parallel, and 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 the utility model condenser, when thermic load reduces or environment temperature is lower, system
Cryogen is unable to evaporating completely in evaporator, and it is extra in low temperature Space-Time Modulation cold system refrigerant to will cause, and may thus have
Refrigerant liquid and refrigerant gas are mixed into compressor, so will be into installing a liquid storage device, storing liquid before evaporator
Refrigerant 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
Refrigerant, thus systems stabilisation pressure.Therefore, for the system of wide cut temperature change and load variations, liquid storage device is arranged can be with
Improve the adaptability of refrigeration system.
One middle pressure pressure controller is installed in the outlet of condenser, to experience condensing pressure out, 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 blower 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, and condensation fan works normally；When outer
Environment temperature is relatively low, and when condensing pressure is lower than middle pressure pressure controller setting value, the contact of middle pressure pressure controller, which is in, to be disconnected
State, condensation fan stop working, when more than the setting value that condensing pressure is restored to middle pressure pressure controller, 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 in an off state, 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, general compressor operation 1min or so, the pressure of 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.
In high-temperature severe environment, the pressure of system can be increased 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.
The beneficial effects of the utility model：
1, the utility model passes through the refrigeration system of reliable design and takes the control measure adaptable with it, so that high
Warm air-conditioning can be run in cryogenic refrigeration, realize high/low temperature all-in-one machine.
2, the utility model, which is taken, installs a liquid storage device in the outlet of air-conditioning refrigeration system condenser；It takes and is in refrigeration
One middle pressure pressure controller is installed between condenser and liquid storage device in system and controls condensation fan；It takes in compressor return air pipe
The delay break contact of one time relay KT of parallel connection, solves environment temperature on the contact of the low pressure controller of installation
When too low, the problem of low pressure controller is in an off state, and system cannot start.
3, the utility model structure is simple, failure rate is low, safe and reliable, at low cost, therefore, economy, practical.
4, the utility model is by the Optimized Matching of refrigeration system and effective control measure, improve temperature change greatly and
The adaptability of the big refrigeration system of load variations.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model electrical schematic diagram.
Specific embodiment
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 of the contact of high-pressure controller 11, the contact of low pressure controller 10 and compressor 1
External power supply after 14 coil is successively connected in series, the contact of middle pressure pressure controller 8 and the A.C. contactor KM2 of condensation fan 9
13 are connected in series be in parallel again with the coil of time relay KT 12 after coil phase with the A.C. contactor KM1 14 of compressor 1
The contact of parallel connection, the delay break contact and low pressure controller 10 of time relay KT 12 is in parallel.
In the utility model, liquid storage device 6, filter 5, expansion valve 4, evaporator 3, compressor 1 and condenser 7 pass through copper pipe
It is sequentially connected.
Circulation has R134a high temperature environment-friendly type refrigerant 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 the utility model condenser 7, when thermic load reduces or environment temperature is lower,
Refrigerant is unable to evaporating completely in evaporator 3, and it is extra in low temperature Space-Time Modulation cold system refrigerant to will cause, and thus may
There are refrigerant liquid and refrigerant gas to be mixed into compressor 1, so to store into an installation liquid storage device 6 before evaporator 3
Liquid refrigerant prevents liquid refrigerant from entering the suction chamber of compressor 1, punctures suction valve chip, i.e., " liquid hammer ", and causes to compress
Machine 1 damages.Therefore a liquid storage device 6 is added in refrigeration systems, it is ensured that when acute variation occurs for cooling condition, Ke Yicun
Certain refrigerant is stored up, thus systems stabilisation pressure.Therefore, for the system of wide cut temperature change and load variations, setting storage
The adaptability of refrigeration system can be improved in liquid device 6.
One middle pressure pressure controller 8 is installed in the outlet of condenser 7, to experience condensing pressure out, 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 blower 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
It works normally；When external environment temperature is relatively low, and condensing pressure is lower than middle 8 setting value of pressure pressure controller, middle pressure pressure controller 8
Contact be in an off state, condensation fan 9 stops working, 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 in an off state, 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.
In high-temperature severe environment, the pressure of system can be increased 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 embodiments are not limited only to the protection scope of the utility model, all basic thoughts based on the utility model
And it modifies or what is changed belongs to the protection scope of the utility model.
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 successively connected in series after external power supply, the A.C. contactor of the contact of medium pressure pressure controller and the condensation fan
KM2 is connected in series the coil after being in parallel again with the coil of the time relay KT 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 refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820514007.9U CN208139529U (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 |
|---|---|---|---|
| CN201820514007.9U CN208139529U (en) | 2018-04-12 | 2018-04-12 | High-temperature air conditioner cryogenic refrigeration operating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208139529U true CN208139529U (en) | 2018-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820514007.9U Active CN208139529U (en) | 2018-04-12 | 2018-04-12 | High-temperature air conditioner cryogenic refrigeration operating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208139529U (en) |
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2018
- 2018-04-12 CN CN201820514007.9U patent/CN208139529U/en active Active
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