CN107192214A - Refrigeration system and its pressure-equalizing control device - Google Patents
Refrigeration system and its pressure-equalizing control device Download PDFInfo
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- CN107192214A CN107192214A CN201610143900.0A CN201610143900A CN107192214A CN 107192214 A CN107192214 A CN 107192214A CN 201610143900 A CN201610143900 A CN 201610143900A CN 107192214 A CN107192214 A CN 107192214A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of refrigeration system with pressure balance function, including a condensing unit, one first refrigerant transfer pipeline, and one include a temperature control unit, the pressure-equalizing control device of one first refrigerant control valve and a refrigerant provider switch device, the temperature control unit is used for judging whether the temperature of evaporator is abnormal and produces a temperature adjustment trigger signal converted in temperature adjustment level and non-temperature adjustment level, first refrigerant control valve is arranged at the first refrigerant transfer pipeline, the refrigerant provider switch device decides whether output valve open signal to the first refrigerant control valve according to the level of temperature adjustment trigger signal, when the temperature control unit judges that the temperature adjustment trigger signal that the temperature anomaly of evaporator and refrigerant provider switch device are received is in temperature adjustment level, the refrigerant provider switch device not output valve open signal to the first refrigerant control valve, so that the first refrigerant control valve is closed, and block the refrigerant from the condensing unit to be delivered to the first refrigerant transfer pipeline.
Description
Technical field
The present invention relates to a kind of refrigeration system and its control device, particularly relate to one kind makes through circulation of fluid
The temperature of plant equipment maintains constant refrigeration system and its pressure-equalizing control device.
Background technology
Existing refrigeration system is using a compressor the gaseous coolant of low-temp low-pressure is compressed into HTHP
Gaseous coolant, the gaseous coolant of HTHP is cooled to the liquid refrigerants of cryogenic high pressure with a condenser,
The liquid refrigerants of cryogenic high pressure is produced effect of easing stress with a cold medium controller and continue defeated towards an evaporator
Send, the liquid refrigerants received is then vaporizated into the gaseous coolant of low-temp low-pressure by evaporator, in this way, because liquid
The vaporization absorption heat of state refrigerant and make for example indoor environment temperature reduction, reach the effect of cooling.Then,
The gaseous coolant of low-temp low-pressure can be back to compressor once again and repeat the flow, form the system of a closing
SAPMAC method, circulation goes round and begins again to reach the purpose of cooling.However, heat and compressor that evaporator is inhaled it
Waste heat produced by operating can return to kind of refrigeration cycle, and probably the radiating of generation condenser is bad, in turn results in compressor
On high-tension side hypertonia, and probably cause overload of compressor and electric power escape, so as to interrupt the fortune of refrigeration system
Make.
The content of the invention
The purpose of the present invention is to provide a kind of pressure balance of energy control system and avoids overload of compressor and jump
The refrigeration system of machine.
Another object of the present invention is to provide a kind of pressure-equalizing control device for being attached to refrigeration system.
To reach above-mentioned purpose, the present invention uses following technical proposals：
A kind of refrigeration system with automatic pressure-balancing function, including a condensing unit, one first refrigerant are defeated
Send pipeline, and a pressure-equalizing control device.
Condensing unit is to provide a refrigerant being in a liquid state.
First refrigerant transfer pipeline to receive the refrigerant of condensing unit and refrigerant be delivered into an evaporator, with
Liquid to gaseous state is carried out in evaporator to change.
Pressure-equalizing control device includes a temperature control unit, one first refrigerant control valve, and a refrigerant is supplied
Inductive switch device.
Temperature control unit is used for judging whether the temperature of evaporator is abnormal and produces a temperature adjustment trigger signal, and
Temperature adjustment trigger signal is in a temperature adjustment level and a non-temperature adjustment level conversion.
First refrigerant control valve is arranged on the first refrigerant transfer pipeline, and according to whether receives a valve opening
Signal is to decide whether to make the refrigerant for carrying out condensation unit to be delivered to the first refrigerant transfer pipeline.
Refrigerant provider switch device is electrically connected with temperature control unit and the first refrigerant control valve, to receive from temperature
Spend the temperature adjustment trigger signal of control unit, and according to the level of temperature adjustment trigger signal to decide whether output valve
Open signal is to the first refrigerant control valve.
Of the invention the effect of, is：When temperature control unit judge the temperature anomaly of evaporator and refrigerant supply open
The temperature adjustment trigger signal that pass device is received is in temperature adjustment level, and output valve does not open letter to refrigerant provider switch device
Number to the first refrigerant control valve, so that the first refrigerant control valve is closed, and the refrigerant for carrying out condensation unit is blocked
It is delivered to the first refrigerant transfer pipeline.
Brief description of the drawings
The other features and effect of the present invention, will clearly be presented in the embodiment with reference to schema, its
In：
Fig. 1 is the block diagram of refrigeration system first embodiment of the present invention；
Fig. 2 is the circuit diagram of first embodiment refrigerant provider switch device；
Fig. 3 is the block diagram of refrigeration system second embodiment of the present invention；And
Fig. 4 is the circuit diagram of second embodiment refrigerant provider switch device.
【Symbol description】
The contact of 1 condensing unit 342 second
The contact of 11 compressor 343 the 3rd
The control contact of 12 condenser 344
The contact of 13 cold medium controller 345 the 4th
The power supply contact of 2 evaporator 347
The power supply contact of 21 first refrigerant transfer pipeline 348
22 second refrigerant transfer pipelines 35 second switching switch
The contact of 3 pressure-equalizing control device 351 the 5th
The contact of 31 first refrigerant control valve 352 the 6th
The contact of 32 temperature control unit 353 the 7th
The control contact of 321 temperature monitor 354
The power supply contact of 322 temperature controller 355
The refrigerant control valve of 323 electric heater 36 second
The pressure control unit of 324 thermal switch 37
The pressure detection device of 33 refrigerant provider switch device 371
34 first switching 372 votage control switches of switch
341 first contact N nodes
Embodiment
Before the present invention is described in detail, it shall be noted that in the following description content, similar component is
Represented with being identically numbered.
Refering to Fig. 1, a first embodiment of refrigeration system of the present invention with pressure balance function, including one is cold
Solidifying unit 1, an evaporator 2, one first refrigerant transfer pipeline 21, and a pressure-equalizing control device 3.
Condensing unit 1 to provide a refrigerant being in a liquid state and including a compressor 11, a condenser 12, and
One cold medium controller 13.Compressor 11 is output into the gas of HTHP refrigerant to be compressed, and condenses
It is cryogenic high pressure liquid refrigerants that device 12, which makes the gaseous coolant of HTHP radiate, and this liquid refrigerants is continued court
Conveyed to cold medium controller 13, cold medium controller 13 is the effect for producing decompression, makes the cryogenic high pressure
Liquid refrigerants turns into the liquid refrigerants of low-temp low-pressure and output.Cold medium controller 13 can be capillary, automatic swollen
Swollen valve, electronic expansion valve etc..
First refrigerant transfer pipeline 21 to receive the refrigerant of condensing unit 1 and refrigerant be delivered into evaporator 2,
Changed with carrying out liquid to gaseous state in evaporator 2.First refrigerant transfer pipeline 21 is connected to cold medium controller 13
And between evaporator 2, to receive the liquid refrigerants after the decompression of cold medium controller 13, and it is delivered to
Evaporator 2.The cooling medium liquid of low-temp low-pressure is back to condensing unit 1 after the vaporization of the evaporation endothermic of evaporator 2
Compressor 11.
Pressure-equalizing control device 3 includes one first refrigerant control valve 31, a temperature control unit 32, and one
Refrigerant provider switch device 33.
First refrigerant control valve 31 is arranged between the cold medium controller 13 of condensing unit 1 and evaporator 2
On one refrigerant transfer pipeline 21, and according to whether a valve opening signal is received, to decide whether to make to come from
The refrigerant of cold medium controller 13 is delivered to the first refrigerant transfer pipeline 21.When the first refrigerant control valve 31 is received
To valve opening signal, then refrigerant is set to be delivered to the first refrigerant transfer pipeline 21；If conversely, not receiving valve
Door open signal, then block the refrigerant from cold medium controller 13 to be delivered to the first refrigerant transfer pipeline 21.
Temperature control unit 32 produces valve opening signal, and temperature control unit 32 is more to judge to steam
Whether the temperature for sending out device 2 is abnormal, and to produce a temperature adjustment trigger signal, and temperature adjustment trigger signal is accurate in a temperature adjustment
Position and a non-temperature adjustment level conversion.
Specifically, temperature control unit 32 include a temperature monitor 321, a temperature controller 322,
One electric heater 323, and a thermal switch 324.Temperature monitor 321 is connected to evaporator 2 and to detect
Go out the temperature of evaporator 2.Such as PID controller of temperature controller 322, according to the temperature of evaporator 2
The design temperature for the evaporator being intended to a user, produces valve opening signal and a heat energy control signal.Electricity
Hot device 323 provides or interrupted electrical heat energy according to the level of temperature adjustment trigger signal to evaporator 2, when temperature adjustment triggering
Signal is in temperature adjustment level, and electric heater 323 provides electrical heat energy, and non-temperature adjustment level is in when temperature adjustment triggers level,
Electric heater 323 interrupts the supply of electrical heat energy.Such as solid-state relay of thermal switch 324 (SSR), electrically
Connect temperature controller 322 and electric heater 323, and the control of the heat energy control signal according to temperature controller 323
System, and temperature adjustment trigger signal is produced in temperature adjustment level and the one of which of non-temperature adjustment level.Wherein, temperature adjustment is accurate
Position such as logic 1, that is, thermal switch 324 turns on, non-temperature adjustment level such as logical zero, that is, thermal switch
324 are not turned on, that is to say, that thermal switch 324 can be according to the heat energy control signal of temperature controller 322
Control, operates in conducting and one of is not turned on, and correspondence produces temperature adjustment level and non-temperature adjustment level
One of them so that the corresponding offer of electric heater 324 interrupts electrical heat energy to evaporator 2.
Simultaneously refering to Fig. 1 and Fig. 2, refrigerant provider switch device 33 is electrically connected with temperature control unit 32 and first
Refrigerant control valve 31, to receive the temperature adjustment trigger signal from temperature control unit 32, and is triggered according to temperature adjustment
The level of signal is to decide whether output valve open signal to the first refrigerant control valve 31.In the present embodiment,
Refrigerant provider switch device 33 includes one first switching switch 34, and the first switching switch 34 is, for example, a relay
Device switch (Relay), and with one first contact 341, one second contact 342, one the 3rd contact 343,
One control contact 344, one the 4th contact 345, a power supply contact 347, and a power supply contact 348.First
The N phases that contact 341 is electrically connected with the first refrigerant control valve 31 are held and are used to output valve open signal.Second
Contact 342 is electrically connected with the temperature controller 322 of temperature control unit 32 and comes from temperature controller 322 to receive
Valve opening signal.3rd contact 343 is suspension joint.4th contact 345 is electrically connected with the control of the first refrigerant
The L phases of valve 31 are held.Power supply contact 347 is electrically connected with L phase power supplys.Power supply contact 348 is electrically connected with L phases
Power supply.Control contact 344 is electrically connected with the thermal switch 324 of temperature control unit 32 to receive temperature adjustment triggering
Signal, and according to the level of temperature adjustment trigger signal, selectively to set up the second contact 342 and the first contact 341
And the electric connection of the one of which of the 3rd contact 343, and valve opening signal is passed via the second contact 342
It is delivered to the first contact 341 and the 3rd contact 343 one of wherein.
Refrigeration system of the present invention reaches pressure balanced particular technique：When the temperature control of temperature control unit 32
Device 322 processed judges the temperature anomaly of evaporator 2, and the first switching switch 34 of refrigerant provider switch device 33
The temperature adjustment trigger signal that is received of control contact 344 be in temperature adjustment level, the first switching switch 34 sets up the
The electric connection of the contact 343 of two point 342 and the 3rd, consequently, it is possible to the valve that the second contact 342 is received
Door open signal is not exported to the first refrigerant control valve 31, so that the first refrigerant control valve 31 is closed, and is hindered
Break and carry out the refrigerant of condensation unit 1 and be delivered to the first refrigerant transfer pipeline 21.
In more detail, the temperature that for example temperature controller 322 is detected according to temperature monitor 321,
When judging the temperature of evaporator 2 less than the design temperature that user is intended to, produce heat energy control signal to control heat
The temperature adjustment trigger signal of control switch 324 is in temperature adjustment level, and the temperature adjustment that electric heater 323 receives temperature adjustment level is touched
Signal and provide electrical heat energy to evaporator 2, at the same time, the first refrigerant control valve 31 blocks refrigerant conveying
To the first refrigerant transfer pipeline 21, consequently, it is possible to receive electrical heat energy to be warming up to design temperature in evaporator 2
When, the first refrigerant transfer pipeline 21 will not convey refrigerant, therefore evaporator 2 will not receive simultaneously electrical heat energy and
Receive refrigerant, it is to avoid receive refrigerant again in heating and be evaporated effect, be so just avoided that a large amount of waste heats are returned
Kind of refrigeration cycle is returned so that condenser 12 radiates bad, the on high-tension side hypertonia of compressor 11 is not caused, because
And can control system pressure balance and compressor 11 is overloaded and chaser.Similarly, such as temperature control
When device 322 judges that the temperature of evaporator 2 is higher than design temperature, thermal switch 324 is controlled by heat energy control signal
Temperature adjustment trigger signal be in non-temperature adjustment level, the first switching switch 34 is set up the second contact 342 and connect with first
The electric connection of point 341, and make the valve opening signal of temperature controller 322 defeated via the first contact 341
Go out to the first refrigerant control valve 31, so that the first refrigerant control valve 31 is opened and conveys refrigerant, while electric heating
Device 323 interrupts electrical heat energy and is supplied to evaporator 2, it is to avoid evaporator 2 receives refrigerant and receive electrical heat energy simultaneously
Row evaporation, therefore can equally reach the pressure balanced purpose of refrigeration system of the present invention.
Refering to Fig. 3, the second embodiment of pressure-equalizing control device one of refrigeration system of the present invention is implemented with first
The difference of example is：Refrigeration system also includes one second refrigerant transfer pipeline 22, and pressure-equalizing control device
3 also include one second refrigerant control valve 36, and a pressure control unit 37.And in a second embodiment,
Refrigerant provider switch device 33 also includes one second switching switch 35.
Second refrigerant transfer pipeline 22 carrys out the one second of the cold medium controller 13 of condensation unit 1 to receive
The refrigerant of flow, and the progress liquid of evaporator 2 is delivered to gaseous state conversion, the first refrigerant transfer pipeline 21 is then
It is the refrigerant for receiving a first flow, and second flow is less than first flow.
Second refrigerant control valve 36 is arranged on the second refrigerant delivery pipe between cold medium controller 13 and evaporator 2
Road 22, and according to whether receive valve opening signal to decide whether to make the refrigerant from cold medium controller 13
It is delivered to the second refrigerant transfer pipeline 22.
Pressure control unit 37 is electrically connected with the second switching switch 35 of refrigerant provider switch device 33, for sentencing
Whether the system pressure of disconnected condensing unit 1 is abnormal and produces a pressure trigger signal according to this to refrigerant provider switch
Second switching switch 35 of device 33, and pressure trigger signal is in the non-over-pressed level conversion of an over-pressed level and one.
Specifically, pressure control unit 37 includes a pressure detection device 371, and a votage control switch 372.Pressure
Detector 371 is attached between compressor 11 and condenser 12, such as the node N shown in Fig. 3, to detect
Refrigerant pressure, and produce a pressure detection value.Votage control switch 372 is electrically connected with pressure detection device 371 and cold
Second switching switch 35 of matchmaker's provider switch device 33, and according to the pressure detection value of pressure detection device 371, come
Determine the level of pressure trigger signal.When the pressure detection value that votage control switch 372 is received reaches a higher limit,
The output pressure trigger signal of votage control switch 372 is in over-pressed level.When the pressure that votage control switch 372 is received is detectd
Measured value reaches a lower limit, and the output pressure trigger signal of votage control switch 372 is in non-over-pressed level.Wherein, mistake
Press level such as logic 1, non-over-pressed level such as logical zero, that is to say, that votage control switch 372 can be according to pressure
Force detection value reaches higher limit, such as 300PSI, and when reaching lower limit, such as 200PSI, operates in and lead
It is logical and one of be not turned on, and correspondence produces over-pressed level and non-over-pressed level one of which.
Simultaneously refering to Fig. 3 and Fig. 4, the first switching switch 34 such as first embodiment of refrigerant provider switch device 33
It is described, with the first contact 341, the second contact 342, the 3rd contact 343, control contact the 344, the 4th
Contact 345.The N phases that first contact 341 is electrically connected with the first refrigerant control valve 31 are held and the second refrigerant control
The N phases of valve 36 processed are held, and the second contact 342 is electrically connected with the temperature controller 322 of temperature control unit 32
To receive the valve opening signal from temperature controller 322, the 4th contact 345 is opened to output valve
Signal.
Second switching switch 35 of refrigerant provider switch device 33 has one the 5th contact 351, one the 6th contact
352nd, one the 7th contact 353, a control contact 354, and a power supply contact 355.5th contact 351 is electrical
The switching of connection first switchs 34 the 4th contact 345 to receive valve opening signal.6th contact 352 is electrical
The L phases for connecting the first refrigerant control valve 31 are held, and when setting up electric connection with the 5th contact 351, it is defeated
Go out valve opening signal to the first refrigerant control valve 31.7th contact 353 is electrically connected with the second refrigerant control valve
36 L phases are held, and set up with the 5th contact 351 be electrically connected with when, output valve open signal to the
Two refrigerant control valves 36.Power supply contact 355 is electrically connected with L phase power supplys.Control contact 354 is electrically connected with pressure
The votage control switch 372 of power control unit 37, and according to the level of pressure trigger signal, selectively to set up
The electric connection of five contacts 351 and the 6th contact 352 and the one of which of the 7th contact 353, and open valve
Open signal and be delivered to the 6th contact 352 and the 7th contact 353 one of wherein via the 5th contact 351.
In a second embodiment, the pressure-equalizing control device 3 of refrigeration system is more used for the pressure of control system
Balance, its particular technique is：When pressure control unit 37 judges (such as section shown in Fig. 3 of condensing unit 1
Point N) pressure anomaly and refrigerant provider switch device 33 second switching switch 35 received pressure activateds letter
Number in over-pressed level, the second switching switch 35 of refrigerant provider switch device 33 not output valve open signal
To the first refrigerant control valve 31, and output valve open signal is to the second refrigerant control valve 36, so that second is cold
Matchmaker's control valve 36 is opened and the refrigerant of second flow is delivered into the second refrigerant transfer pipeline 22.In more detail,
When the temperature adjustment trigger signal that thermal switch 324 is exported is in temperature adjustment level, the second of the first switching switch 34
Contact 342 transmits valve opening signal to the first contact 341 and the output valve of the 4th contact 345 opens letter
Number, now, the pressure that for example pressure detection device 371 is detected between compressor 11 and condenser 12 reaches
During higher limit (such as 300PSI), votage control switch 372 produces pressure trigger signal in over-pressed level and second
The control contact 354 of switching switch 35 receives the pressure trigger signal in over-pressed level, and the second switching is opened
35 electric connections for setting up the 5th contact 351 and the 7th contact 353 are closed, so that the second refrigerant control valve 36
Receive valve opening signal and open, and the refrigerant of second flow is delivered to the second refrigerant transfer pipeline 22,
Meanwhile, the first refrigerant control valve 31 is closed because valve opening signal is not received by, thus blocks first
The refrigerant conveying of flow, consequently, it is possible to only allow the less cold medium flux of flow to be delivered to evaporator 2, and energy
The pressure increase of reduction system, and evaporator 2 is avoided that while receiving a large amount of refrigerants and receiving electrical heat energy progress
Evaporation, will not produce a large amount of waste heats and cause system radiating bad, and then can reach the pressure of system simultaneously
Dynamic balance simultaneously makes compressor 11 to overload and chaser.Similarly understand, for example pressure detection device 371 is detected
When pressure between compressor 11 and condenser 12 reaches lower limit (such as 200PSI), votage control switch 372
Generation pressure trigger signal is received in the control contact 354 of non-over-pressed level and the second switching switch 35 and is in
The pressure trigger signal of non-over-pressed level, the second switching switch 35 sets up the 5th contact 351 and the 6th contact 352
Electric connection so that the first refrigerant control valve 31 receives valve opening signal and makes the refrigerant of first flow
The first refrigerant transfer pipeline 21 is delivered to, meanwhile, the second refrigerant control valve 36 is opened because being not received by valve
Open signal and close, thus block the refrigerant conveying of second flow, thus the larger refrigerant warp of flow can be allowed
Evaporator 2 is delivered to by the first refrigerant control valve 31, the first refrigerant transfer pipeline 21, to be rapidly achieved cooling
And improve the effect of chilled load.
, can be in temperature controller from described above, the pressure-equalizing control device 3 of refrigeration system of the present invention
321 judge that the temperature of evaporator 2 is too low (or too high), and supply (or interruption) electric heating by electric heater 323
Can so that evaporator 2 heat up design temperature that (or cooling) be intended to user when, coordinate refrigerant to supply
Derailing switch 33 first switching switch 34 handover operation, come control the first refrigerant control valve 31 close (or
Open), and (or open) refrigerant conveying is accordingly blocked, to avoid evaporator 2 while receiving refrigerant and electricity
Heat energy is evaporated effect.In addition, can more install to convey the second refrigerant delivery pipe of the refrigerant of low discharge
Road 22 and corresponding second refrigerant control valve 36, and coordinate the second of refrigerant provider switch device 33 to switch switch
35 handover operation, and in system overvoltage, control closes the first refrigerant control valve 31, only allows compared with rill
The refrigerant conveying of amount, and control closes the second refrigerant control valve 36 when detecting non-over-pressed, and can allow
The refrigerant conveying of larger flow, thereby, control refrigeration system can reach pressure balance, and make compressor 11 not
Cause to overload and chaser, therefore the purpose of the present invention can be reached really.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, can readily occur in
Change or replacement, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should
It is defined by the scope of the claims.
Claims (12)
1. a kind of refrigeration system with pressure balance function, including：
One condensing unit, to provide a refrigerant being in a liquid state；
One first refrigerant transfer pipeline, to receive the refrigerant of the condensing unit and refrigerant is delivered into an evaporation
Device, is changed with carrying out liquid to gaseous state in the evaporator；
One pressure-equalizing control device, including
One temperature control unit, it is whether abnormal and produce temperature adjustment triggering letter for the temperature that judges the evaporator
Number, and the temperature adjustment trigger signal is in a temperature adjustment level and a non-temperature adjustment level conversion,
One first refrigerant control valve, is arranged on the first refrigerant transfer pipeline, and according to whether receive a valve
Door open signal to decide whether to make the refrigerant from the condensing unit to be delivered to the first refrigerant transfer pipeline,
And
One refrigerant provider switch device, is electrically connected with the temperature control unit and the first refrigerant control valve, to connect
Receive the temperature adjustment trigger signal from the temperature control unit, and according to the level of the temperature adjustment trigger signal to determine
Whether the valve opening signal is exported to the first refrigerant control valve；
When the temperature control unit judges the temperature anomaly of the evaporator and the refrigerant provider switch device received
The temperature adjustment trigger signal is in the temperature adjustment level, and the refrigerant provider switch device does not export the valve opening signal extremely
The first refrigerant control valve, so that the first refrigerant control valve is closed, and is blocked from the cold of the condensing unit
Matchmaker is delivered to the first refrigerant transfer pipeline.
2. refrigeration system according to claim 1, it is characterised in that the pressure-equalizing control device
The temperature control unit include
One temperature monitor, the temperature to detect the evaporator,
One temperature controller, according to the temperature of the evaporator and a design temperature, produces the valve opening signal
And a heat energy control signal,
One electric heater, electrical heat energy is provided or interrupts to the evaporator according to the level of the temperature adjustment trigger signal,
When the temperature adjustment trigger signal is in the temperature adjustment level, the electric heater provides electrical heat energy, when the temperature adjustment triggers level
In the non-temperature adjustment level, the electric heater interrupts the supply of electrical heat energy, and
One thermal switch, is electrically connected with the temperature controller, electric heater and refrigerant provider switch device, and according to
The control of the heat energy control signal of temperature controller, and temperature adjustment trigger signal is produced in temperature adjustment level and non-temperature adjustment
The one of which of level.
3. refrigeration system according to claim 1, it is characterised in that the pressure-equalizing control device
Refrigerant provider switch device include
One first switching switch, has
One first contact, is electrically connected with the first refrigerant control valve, and to output valve open signal,
One second contact, receives valve opening signal,
One the 3rd contact,
One control contact, is electrically connected with temperature control unit to receive temperature adjustment trigger signal, and touch according to temperature adjustment
The level of signalling, selectively to set up the electrical of the second contact and the first contact and the 3rd contact one of which
Connection, and valve opening signal is delivered to the first contact and the 3rd contact one of wherein via the second contact.
4. refrigeration system according to claim 1, it is characterised in that the first refrigerant transfer pipeline
It is the refrigerant for the first flow that conveying carrys out condensation unit, and refrigeration system also includes：
One second refrigerant transfer pipeline, the refrigerant to convey the second flow for carrying out condensation unit extremely evaporates
Device, and second flow is less than first flow；
And pressure-equalizing control device also includes
One second refrigerant control valve, is arranged on the second refrigerant transfer pipeline, and open according to whether receiving valve
Signal is opened to decide whether to make the refrigerant for carrying out condensation unit to be delivered to the second refrigerant transfer pipeline；And
One pressure control unit, is electrically connected with the second switching switch of refrigerant provider switch device, cold for judging
Whether the pressure of solidifying unit is abnormal and produces a pressure trigger signal according to this and cuts to the second of refrigerant provider switch device
Switch is changed, and pressure trigger signal is in the non-over-pressed level conversion of an over-pressed level and one；
When pressure control unit judges the pressure anomaly of condensing unit, and refrigerant provider switch device received
The pressure trigger signal that two switching switches are received is in over-pressed level, and the second switching of refrigerant provider switch device is opened
Close not that output valve open signal is to the first refrigerant control valve, and output valve open signal is to the second refrigerant control
Valve processed, so that the second refrigerant control valve is opened and the refrigerant of second flow is delivered into the second refrigerant transfer pipeline.
5. refrigeration system according to claim 4, it is characterised in that the pressure-equalizing control device
Pressure control unit include
One pressure detection device, the refrigerant pressure to detect condensing unit, and a pressure detection value is produced, and
One votage control switch, is electrically connected with pressure detection device and refrigerant provider switch device, and according to pressure detection device
Pressure detection value, to determine the level of pressure trigger signal；
When the pressure detection value that votage control switch is received reaches a higher limit, votage control switch output pressure triggering letter
Number in over-pressed level；
When the pressure detection value that votage control switch is received reaches a lower limit, votage control switch output pressure triggering letter
Number in non-over-pressed level.
6. refrigeration system according to claim 4, it is characterised in that the pressure-equalizing control device
Refrigerant provider switch device include
One first switching switch, has
One first contact, is electrically connected with first and second refrigerant control valve,
One second contact, receives valve opening signal,
One the 4th contact, output valve open signal；And
One second switching switch, has
One the 5th contact, is electrically connected with the 4th contact of the first switching switch to receive valve opening signal；
One the 6th contact, is electrically connected with the first refrigerant control valve, and be electrically connected with being set up with the 5th contact
When, output valve open signal to the first refrigerant control valve；
One the 7th contact, is electrically connected with the second refrigerant control valve, and be electrically connected with being set up with the 5th contact
When, output valve open signal to the second refrigerant control valve；
One control contact, is electrically connected with pressure control unit, and according to the level of pressure trigger signal, to select
Selecting property sets up the electric connection of the 5th contact and the 6th contact and the 7th contact one of which, and makes valve opening
Signal is delivered to the 6th contact and the 7th contact one of wherein via the 5th contact.
7. a kind of pressure-equalizing control device, is suitable for being installed to a refrigeration system, refrigeration system is used to including one
The condensing unit for the refrigerant that offer one is in a liquid state, one are to receive the refrigerant of condensing unit and be delivered to refrigerant
One carries out liquid to the first refrigerant transfer pipeline of the evaporator of gaseous state conversion, and pressure-equalizing control device bag
Include：
One temperature control unit, to judge whether the temperature of evaporator is abnormal, and then decides whether generation one
Temperature adjustment trigger signal, and temperature adjustment trigger signal is in a temperature adjustment level and a non-temperature adjustment level conversion；
One first refrigerant control valve, is arranged on the first refrigerant transfer pipeline, and according to whether receive a valve
Open signal is to decide whether to make the refrigerant for carrying out condensation unit to be delivered to the first refrigerant transfer pipeline；And
One refrigerant provider switch device, is electrically connected with temperature control unit and the first refrigerant control valve, is come with receiving
From the temperature adjustment trigger signal of temperature control unit, and according to the level of temperature adjustment trigger signal to decide whether output
Valve opening signal is to the first refrigerant control valve；
When temperature control unit judges that the temperature adjustment that the temperature anomaly of evaporator and refrigerant provider switch device are received is touched
Signal be in temperature adjustment level, refrigerant provider switch device not output valve open signal to the first refrigerant control valve,
So that the first refrigerant control valve is closed, and the refrigerant for carrying out condensation unit is blocked to be delivered to the first refrigerant delivery pipe
Road.
8. pressure-equalizing control device according to claim 7, it is characterised in that the temperature control
Unit includes
One temperature monitor, the temperature to detect evaporator,
One temperature controller, according to the temperature of evaporator and a design temperature, produces valve opening signal and one
Heat energy control signal,
One electric heater, provides or interrupts electrical heat energy to evaporator according to the level of temperature adjustment trigger signal, work as tune
Warm trigger signal is in temperature adjustment level, and electric heater provides electrical heat energy, when temperature adjustment triggering level is in non-temperature adjustment standard
Position, electric heater interrupts the supply of electrical heat energy, and
One thermal switch, is electrically connected with temperature controller, electric heater and refrigerant provider switch device, and according to temperature
The control of the heat energy control signal of controller is spent, and it is accurate in temperature adjustment level and non-temperature adjustment to produce temperature adjustment trigger signal
The one of which of position.
9. pressure-equalizing control device according to claim 7, it is characterised in that the refrigerant supply
Derailing switch includes
One first switching switch, has
One first contact, is electrically connected with the first refrigerant control valve, and to output valve open signal,
One second contact, receives valve opening signal,
One the 3rd contact,
One control contact, is electrically connected with temperature control unit to receive temperature adjustment trigger signal, and touch according to temperature adjustment
The level of signalling, selectively to set up the electrical of the second contact and the first contact and the 3rd contact one of which
Connection, and valve opening signal is delivered to the first contact and the 3rd contact one of wherein via the second contact.
10. pressure-equalizing control device according to claim 7, refrigeration system also includes one to defeated
The refrigerant of condensation unit is sent to the second refrigerant transfer pipeline of evaporator, and the first refrigerant of refrigeration system
Transfer pipeline is the refrigerant for conveying a first flow, and the second refrigerant transfer pipeline is the cold of one second flow of conveying
Matchmaker, second flow is less than first flow, and pressure-equalizing control device also includes：
One second refrigerant control valve, is arranged on the second refrigerant transfer pipeline, and open according to whether receiving valve
Signal is opened to decide whether to make the refrigerant for carrying out condensation unit to be delivered to the second refrigerant transfer pipeline；And
One pressure control unit, is electrically connected with refrigerant provider switch device, for judging that the pressure of condensing unit is
No exception simultaneously produces a pressure trigger signal to refrigerant provider switch device, and pressure trigger signal is in a mistake according to this
Press level and a non-over-pressed level conversion；
When pressure control unit judges the pressure that the pressure anomaly of condensing unit and refrigerant provider switch device are received
Trigger signal is in over-pressed level, and output valve open signal to the first refrigerant is not controlled refrigerant provider switch device
Valve, and output valve open signal is to the second refrigerant control valve, so that the second refrigerant control valve is opened and by the
The refrigerant of two flows is delivered to the second refrigerant transfer pipeline.
11. pressure-equalizing control device according to claim 10, it is characterised in that the pressure control
Unit processed includes
One pressure detection device, the refrigerant pressure to detect condensing unit, and a pressure detection value is produced, and
One votage control switch, is electrically connected with pressure detection device and refrigerant provider switch device, and according to pressure detection device
Pressure detection value, to determine the level of pressure trigger signal；
When the pressure detection value that votage control switch is received reaches a higher limit, votage control switch output pressure triggering letter
Number in over-pressed level；
When the pressure detection value that votage control switch is received reaches a lower limit, votage control switch output pressure triggering letter
Number in non-over-pressed level.
12. pressure-equalizing control device according to claim 10, it is characterised in that the refrigerant is supplied
Inductive switch device includes
One first switching switch, has
One first contact, is electrically connected with first and second refrigerant control valve,
One second contact, receives valve opening signal,
One the 4th contact, output valve open signal；And
One second switching switch, has
One the 5th contact, is electrically connected with the 4th contact of the first switching switch to receive valve opening signal；
One the 6th contact, is electrically connected with the first refrigerant control valve, and be electrically connected with being set up with the 5th contact
When, output valve open signal to the first refrigerant control valve；
One the 7th contact, is electrically connected with the second refrigerant control valve, and be electrically connected with being set up with the 5th contact
When, output valve open signal to the second refrigerant control valve；
One control contact, is electrically connected with pressure control unit, and according to the level of pressure trigger signal, to select
Selecting property sets up the electric connection of the 5th contact and the 6th contact and the 7th contact one of which, and makes valve opening
Signal is delivered to the 6th contact and the 7th contact one of wherein via the 5th contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143900.0A CN107192214A (en) | 2016-03-14 | 2016-03-14 | Refrigeration system and its pressure-equalizing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143900.0A CN107192214A (en) | 2016-03-14 | 2016-03-14 | Refrigeration system and its pressure-equalizing control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107192214A true CN107192214A (en) | 2017-09-22 |
Family
ID=59870688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610143900.0A Pending CN107192214A (en) | 2016-03-14 | 2016-03-14 | Refrigeration system and its pressure-equalizing control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107192214A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153551A (en) * | 1995-03-14 | 1997-07-02 | 哈斯曼公司 | Refrigerated merchandiser with modular evaporator coils and EEPR control |
| CN203837312U (en) * | 2014-03-14 | 2014-09-17 | 谢德音 | Multi-channel refrigerant control structure capable of transforming refrigerant evaporation flow |
| CN104279694A (en) * | 2013-07-11 | 2015-01-14 | 盟立自动化股份有限公司 | Integrated air conditioner and refrigerant control energy-saving device and control method thereof |
| GB2517993A (en) * | 2013-09-09 | 2015-03-11 | Jung-Shen Liao | Refrigerating machine |
| TWM528413U (en) * | 2016-02-17 | 2016-09-11 | De-Feng Xie | Refrigeration system and pressure balance control device thereof |
-
2016
- 2016-03-14 CN CN201610143900.0A patent/CN107192214A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153551A (en) * | 1995-03-14 | 1997-07-02 | 哈斯曼公司 | Refrigerated merchandiser with modular evaporator coils and EEPR control |
| CN104279694A (en) * | 2013-07-11 | 2015-01-14 | 盟立自动化股份有限公司 | Integrated air conditioner and refrigerant control energy-saving device and control method thereof |
| GB2517993A (en) * | 2013-09-09 | 2015-03-11 | Jung-Shen Liao | Refrigerating machine |
| CN203837312U (en) * | 2014-03-14 | 2014-09-17 | 谢德音 | Multi-channel refrigerant control structure capable of transforming refrigerant evaporation flow |
| TWM528413U (en) * | 2016-02-17 | 2016-09-11 | De-Feng Xie | Refrigeration system and pressure balance control device thereof |
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