CN107144037B - Energy saver, environmental test chamber and its control method of environmental test chamber - Google Patents
Energy saver, environmental test chamber and its control method of environmental test chamber Download PDFInfo
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- CN107144037B CN107144037B CN201710361076.0A CN201710361076A CN107144037B CN 107144037 B CN107144037 B CN 107144037B CN 201710361076 A CN201710361076 A CN 201710361076A CN 107144037 B CN107144037 B CN 107144037B
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver heat
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention discloses a kind of energy saver of environmental test chamber, environmental test chamber and its control method, wherein, energy saver includes refrigeration system, and the refrigeration system includes compressor, condenser, the first solenoid valve, restricting element, evaporator, second solenoid valve, ice storage unit, ice water circulation water pump and ice water heat exchanger；The compressor, condenser, the first solenoid valve, restricting element and evaporator series form the first coolant loop；The compressor, condenser, second solenoid valve, ice storage unit connect to form the second coolant loop, the ice storage unit, ice water circulation water pump and ice water heat exchanger connect to form freezing water-flow circuit, the refrigeration system stores latent heat by the second coolant loop to ice storage unit, and the latent heat of ice storage unit storage is discharged by the freezing water-flow circuit, make to keep constant temperature in the environmental test chamber, the energy emptying during compressor operating is avoided, energy consumption is saved, reduces testing cost.
Description
Technical field
The present invention relates to detection device technical field more particularly to a kind of energy saver of environmental test chamber, environmental tests
Case and its control method.
Background technology
Environmental test chamber is the weather of the simulating natural environment in effective area of space, treats test product and causes brokenly
It is bad, degree of aging of the detection product under the simulated environment.When simulation low temperature environment is detected product, pass through compressor
Low temperature environment is manufactured in useful space region, but since product to be measured powers on fever, compressor is needed to be always maintained at opening state
State can just make the useful space regional stability in target temperature.Useful space demand is cold when on the other hand, due to keeping constant temperature
Load very little is not enough to that compressor is maintained to work under the minimum load of permission, the energy for carrying a part of refrigerant is needed to put
Sky, the heat exchange being not involved in the useful space, causes energy dissipation, increases testing cost.
Invention content
The main purpose of the present invention is to provide a kind of energy savers of environmental test chamber, it is intended to save environmental test chamber
Energy consumption reduces testing cost.
To achieve the above object, energy saver proposed by the present invention, is applied to environmental test chamber, and the energy saver includes
Refrigeration system,
The refrigeration system include compressor, condenser, the first solenoid valve, restricting element, evaporator, second solenoid valve,
Ice storage unit, ice water circulation water pump and ice water heat exchanger；
The compressor, condenser, the first solenoid valve, restricting element and evaporator series form the first coolant loop；
The compressor, condenser, second solenoid valve, ice storage unit connect to form the second coolant loop；
The ice storage unit, ice water circulation water pump and ice water heat exchanger connect to form freezing water-flow circuit；
The refrigeration system stores latent heat by second coolant loop to the ice storage unit, and passes through the freezing
Water-flow circuit discharges the latent heat of the ice storage unit storage, makes to keep constant temperature in the environmental test chamber；
The refrigeration system further includes connecting the 4th solenoid valve of the ice water heat exchanger, and the 4th solenoid valve is for controlling
Ice water in ice making water- to-water heat exchanger flows back to the ice storage unit；
The energy saver further includes heating system and controller, the compressor, the first solenoid valve, second solenoid valve,
Ice water circulation water pump and heating system are all connected with the controller；
When the environmental test chamber cools down, the controller controls the first solenoid valve conduction, second solenoid valve is closed, and makes
It obtains the high-temperature gas refrigerant being discharged from compressor and only flows into the first coolant loop；
When the environmental test chamber keeps cryogenic thermostat, the controller controls the first solenoid valve and second solenoid valve is led
Logical, part refrigerant stores latent heat by the second coolant loop to the ice storage unit；
When the environmental test chamber heats up, the compressor is out of service, the heating system operation heating；
When the environmental test chamber keeps high temperature constant temperature, the controller controls the first solenoid valve and second solenoid valve is closed
It closes, the ice water circulation water pump operation, the latent heat for being stored in the ice storage unit is exchanged by the ice water heat exchanger to institute
State environmental test chamber.
Further, when the environmental test chamber cools down, the controller controls the first solenoid valve conduction, ice water circulation
Water pump operation will be stored in the latent heat of the ice storage unit while cooling down to environmental test chamber using the first coolant loop
It is exchanged to the environmental test chamber by the ice water heat exchanger.
Further, the refrigeration system further includes connecting the air compressor machine and third solenoid valve of the ice storage unit, described
Third solenoid valve is set between the ice storage unit and air compressor machine, and the air compressor machine and third solenoid valve are all connected with the control
Device, in the ice storage unit ice-reserving energy storage, control air compressor machine is filled with compressed air to the ice storage unit.
Further, the ice storage unit includes Ice Storage Tank, refrigerant coil pipe, water distributor and water collector, the refrigerant coil pipe
It is evenly arranged in the Ice Storage Tank, the water distributor is set to the water inlet of the Ice Storage Tank, will recycle the uniform water conservancy diversion of ice water
To the outer surface of the refrigerant coil pipe, the water collector is set to the water outlet of the Ice Storage Tank, collects refrigerant coil surface
Ice water is simultaneously guided to the freezing water-flow circuit.
Further, the refrigeration system further includes being set to the conductivity sensor of the ice storage unit, described in detection
The ice layer thickness of refrigerant coil pipe outer wall.
Further, the refrigeration system further includes oil eliminator and device for drying and filtering, and the oil eliminator is set to institute
It states between compressor and condenser, the device for drying and filtering is set between the condenser and second solenoid valve.
Another object of the present invention is to propose a kind of environmental test chamber, which includes energy saving dress as described above
Set and be set to the circulating fan of the environmental test box top.
The present invention also proposes that a kind of control method of environmental test chamber, the control method include the following steps：
When receiving product testing instruction, the refrigeration system is controlled by the first coolant loop to the environmental test
Case cools down；
When temperature in the environmental test chamber is down to the first preset temperature, it is cold by second to control the refrigeration system
Matchmaker circuit stores latent heat to the ice storage unit；
After preset time, it is out of service to control the refrigeration system, controls the heating system operation to the environment
Chamber heats up；
When temperature in the environmental test chamber rises to the second preset temperature, the ice water circulation water pump operation is controlled,
The latent heat for being stored in the ice storage unit is exchanged by the ice water heat exchanger to the environmental test chamber.
Further, cooled down to the environmental test chamber by the first coolant loop in the control refrigeration system
When, the ice water circulation water pump operation is also controlled, the latent heat for being stored in the ice storage unit is handed over by the ice water heat exchanger
Shift to the environmental test chamber.
Further, described when receiving product testing instruction, it controls the refrigeration system and passes through the first coolant loop
Further include step before the step of cooling down to the environmental test chamber：
When detecting the environmental test chamber booting, controls the circulating fan and open.
The energy saver of the present invention is applied to environmental test chamber, wherein energy saver includes refrigeration system, the refrigeration
System includes compressor, condenser, the first solenoid valve, restricting element, evaporator, second solenoid valve, ice storage unit, ice water circulation
Water pump and ice water heat exchanger；The compressor, condenser, the first solenoid valve, restricting element and evaporator series form first
Coolant loop cools down to environmental test chamber；The compressor, condenser, second solenoid valve, ice storage unit connect to form
Two coolant loops, the ice storage unit, ice water circulation water pump and ice water heat exchanger connect to form freezing water-flow circuit, described
Refrigeration system stores latent heat by second coolant loop to the ice storage unit, and is released by the freezing water-flow circuit
The latent heat for putting ice storage unit storage makes to keep constant temperature in the environmental test chamber, during avoiding compressor operating
Energy is vented, and is saved the energy consumption of environmental test chamber, is reduced testing cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of refrigeration system of the energy saver of the environmental test chamber of the present invention；
Fig. 2 is the front view of one embodiment of environmental test chamber of the present invention；
Fig. 3 is the rearview of one embodiment of environmental test chamber of the present invention；
Fig. 4 is the flow chart of one embodiment of control method of the environmental test chamber of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Refrigeration system | 94 | Air compressor machine |
| 10 | Compressor | 95 | 4th solenoid valve |
| 20 | Oil eliminator | 97 | Entering water electromagnetic valve |
| 30 | Condenser | 300 | Environmental test chamber |
| 40 | Device for drying and filtering | 310 | Circulating fan |
| 50 | Restricting element | 330 | Closing door |
| 60 | First solenoid valve | 3301 | Door handle |
| 70 | Evaporator | 3303 | Observation window |
| 80 | Second solenoid valve | 3305 | Electromagnetic lock |
| 90 | Ice storage unit | 350 | Electric control chamber |
| 91 | Ice water circulation water pump | 3501 | Touch screen |
| 92 | Third solenoid valve | 3503 | Control panel |
| 93 | Ice water heat exchanger | 370 | Tri-colour LED |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention proposes a kind of energy saver of environmental test chamber.
Referring to Fig.1, Fig. 1 is the structural representation of one embodiment of refrigeration system of the energy saver of the environmental test chamber of the present invention
Figure.
The energy saver of the present embodiment includes refrigeration system 100, and the refrigeration system 100 includes compressor 10, condenser
30, the first solenoid valve 60, restricting element 50, evaporator 70, second solenoid valve 80, ice storage unit 90, ice water circulation water pump 91 and
Ice water heat exchanger 93；
The compressor 10, condenser 30, the first solenoid valve 60, restricting element 50 and the series connection of evaporator 70 form first
Coolant loop；
The compressor 10, condenser 30, second solenoid valve 80, the series connection of ice storage unit 90 form the second coolant loop；
The ice storage unit 90, ice water circulation water pump 91 and the series connection of ice water heat exchanger 93 form freezing water-flow circuit；
The refrigeration system 100 stores latent heat by second coolant loop to the ice storage unit 90, and passes through institute
The latent heat that freezing water-flow circuit discharges the storage of the ice storage unit 90 is stated, makes to keep constant temperature in the environmental test chamber 300.
Referring to figs. 1 to 3, the environmental test chamber 300 includes the useful space for placing product to be detected and to described
The energy saver that the useful space is heated up and cooled down, the energy saver include the refrigeration to cool down to the useful space
System 100, the heating system to heat up to the useful space.The top of the environmental test chamber 300 is provided with circulated air
Machine 310, the heating system are heated using heater, and heater is made by resistance wire, heating power, circulating fan 310
It is distinguished and admirable in heater strip surface heat exchanging that work forces the air in the useful space to be formed, and air themperature increases, and then to described effective
It heats up in space；Pipeline of the refrigeration system 100 using refrigerant between compressor, condenser, throttling set, evaporator
Cycle heat exchange, by refrigerant, case changeable heat-absorbing, the work of circulating fan 310 force the air in the useful space to form wind in evaporator
Stream exchanges heat in evaporator external, and air themperature reduces, and then cools down to the useful space.
With further reference to Fig. 1 to 3, the environmental test chamber 300 further includes for test product to be sent into environmental test chamber
The closing door 330 of 300 useful space, there are two the settings of the closing door 330, and described two closing doors 330 are set to described
300 two opposite side walls of environmental test chamber are both provided on each closing door 330 convenient for opening the door handle of the closing door 330
3301, and convenient for closing the electromagnetic lock 3305 of the closing door 330, each closing door 330 is additionally provided with an observation window 3303, institute
State the center that observation window 3305 is set to the closing door 330.The environmental test chamber 300 further includes electric control chamber 350, institute
The useful space for stating electric control chamber 350 and environmental test chamber 300 closes on setting, and the outer side surface of the electric control chamber 350 is provided with tactile
Control screen 3501 and control panel 3503, tester can be by the touch screens 3501 or control panel 3503 to environmental test
Cooling parameters, heating parameter or other operating parameters of case 300 are configured, and the top of the electric control chamber 350 is additionally provided with three
Color indicator light 370 carries out alarm to test process.
Referring to figs. 1 to 3, the refrigeration system 100 of the energy saver includes compressor 10, condenser 30, the first solenoid valve
60, restricting element 50, evaporator 70, second solenoid valve 80, ice storage unit 90, ice water circulation water pump 91 and ice water heat exchanger 93；
The compressor 10, condenser 30, the first solenoid valve 60, restricting element 50 and the series connection of evaporator 70 form the first coolant loop,
When the environmental test chamber 300 needs low temperature environment, the compressor 10 starts operation, by the gaseous state of the high temperature and pressure of generation
Refrigerant is sent into condenser 30 and exchanges heat with the air around condenser, discharges heat to extraneous air, while utilizing circulated air
Environmental test chamber 300 is discharged in the heat of release by machine 310, and the refrigerant after condensed device 30 cools down enters the throttling of restricting element 50
Decompression forms low temperature liquid refrigerant, absorbs heat of vaporization that extraneous air carries into gaseous refrigerant subsequently into evaporator 70,
Cool down to extraneous air, and then reduce the temperature in 300 useful space of environmental test chamber, realizes in environmental test chamber 300
The useful space in simulate low temperature environment；The compressor 10, condenser 30, second solenoid valve 80, the series connection shape of ice storage unit 90
At the second coolant loop, when environmental test chamber 300 maintains low temperature environment constant, no longer need compressor 10 full in the useful space
The latent heat generated under loading condiction utilizes the latent heat that the second coolant loop carries part refrigerant to be stored in the ice storage unit at this time
90；The ice storage unit 90, ice water circulation water pump 91 and the series connection of ice water heat exchanger 93 form freezing water-flow circuit, in environment
When chamber 300 maintains hot environment constant, since the heat that the power up test of test product generates can improve in the useful space
Temperature in the useful space needs the latent heat treatment for storing ice storage unit 90 using freezing water-flow circuit, to effective at this time
Space cools down, by ice water circulation water pump by the ice water of low temperature by ice water heat exchanger 93 and the hot-air in the useful space
Heat exchange is carried out, so that environmental test chamber 300 keeps constant temperature.
The energy saver of the environmental test chamber of the present invention, including refrigeration system 100 and heating system, the refrigeration system
100 include compressor 10, condenser 30, the first solenoid valve 60, restricting element 50, evaporator 70, second solenoid valve 80, ice-reserving dress
Set 90, ice water circulation water pump 91 and ice water heat exchanger 93；The compressor 10, condenser 30, the first solenoid valve 60, throttling member
Part 50 and the series connection of evaporator 70 form the first coolant loop, cool down to environmental test chamber 300；The compressor 10, condensation
Device 30, second solenoid valve 80, the series connection of ice storage unit 90 form the second coolant loop, the ice storage unit 90, ice water circulation water pump
91 and ice water heat exchanger 93 series connection formed freezing water-flow circuit, the refrigeration system 100 by second coolant loop to
The ice storage unit 90 stores latent heat, and the latent heat of the storage of the ice storage unit 90 is discharged by the freezing water-flow circuit,
Make to keep constant temperature in the environmental test chamber 300, avoids the energy emptying in 10 operational process of compressor, save environment examination
The energy consumption of tryoff reduces testing cost.
With further reference to Fig. 1 to 3, the energy saver further includes heating system and controller (not shown), the compression
Machine 10, the first solenoid valve 60, second solenoid valve 80, ice water circulation water pump 91 and heating system are all connected with the controller；
When the environmental test chamber 300 cools down, the controller controls the conducting of the first solenoid valve 60, second solenoid valve 80
It closes so that the high-temperature gas refrigerant being discharged from compressor 10 only flows into the first coolant loop；
When the environmental test chamber 300 keeps cryogenic thermostat, the controller control the first solenoid valve 60 and the second electricity
Magnet valve 80 is connected, and part refrigerant stores latent heat by the second coolant loop to the ice storage unit 90；
When the environmental test chamber 300 heats up, the compressor 10 is out of service, the heating system operation heating；
When the environmental test chamber 300 keeps high temperature constant temperature, the controller control the first solenoid valve 60 and the second electricity
Magnet valve 80 is closed, the ice water circulation water pump 91 is run, and the latent heat for being stored in the ice storage unit 90 is changed by the ice water
Hot device 93 is exchanged to the environmental test chamber 300.
In the present embodiment, the controller can be the master control borad of environmental test chamber 300, can also be JA(junction ambient) examination
The host of tryoff 300, the refrigeration system 100 of the controller control energy saver and heating system operation, in environmental test chamber
Simulation low temperature or hot environment in 300 useful space carry out the functional test under low temperature or hot environment to product.It is needing
When simulating low temperature environment, operation refrigeration system is needed to cool down environmental test chamber 300, at this point, controlling first by controller
It is conducted on solenoid valve 60, the power-off of second solenoid valve 80 is closed, the condensed device of high-temperature gas refrigerant 30 being discharged from compressor 10
50 further reducing pressure by regulating flow of restricting element is entered by the first solenoid valve 60 after decrease temperature and pressure, finally passes through evaporator 70 and has
The hot-air imitated in space carries out heat exchange, absorbs the heat of vaporization that hot-air carries and enters compressor 10 again at gaseous coolant
It is compressed into the gaseous coolant of high temperature and pressure, into subsequent cycle, until environmental test chamber 300 reaches preset cryogenic temperature；This
When, since environmental test chamber 300 needs to keep cryogenic thermostat, need to control compressor 10 with minimum load operation, while will pressure
The part refrigerant that contracting machine 10 does work is not involved in the heat exchange in 300 useful space of environmental test chamber, but the part refrigerant is led to
It crosses second solenoid valve 80 to exchange heat into ice storage unit 90, the latent heat which carries is stored in the ice storage unit
90, which carries out heat exchange in ice storage unit 90 with the water in ice storage unit 90, absorbs the heat in water, makes its temperature
Degree is reduced and is congealed into ice, which is stored in heat is carried in the ice water of ice storage unit 90 in the form of the latent heat of condensation.
After environmental test chamber 300 is kept for the low temperature constant preset time, the test environment of switch test product is needed, at this time
Need the low temperature environment in the useful space of environmental test chamber 300 switching to hot environment, namely to environmental test chamber 300 into
Row heating, at this time, it may be necessary to control, refrigeration system is out of service, and heating system starts operation, namely control compressor 10 stops fortune
Row controls heater heating power, and it is distinguished and admirable on heater strip surface that the work of circulating fan 310 forces the air in the useful space to be formed
Heat exchange, air themperature increases, and then heats up to the useful space, until environmental test chamber 300 reaches preset high temperature
Temperature is generally set in 25 DEG C；At this point, since environmental test chamber 300 needs to keep high temperature constant temperature, but electrical measurement in test product
It will produce certain heat when examination, but the partial heat is not enough to maintain compressor 10 with minimum load operation, the control again
Device processed controls the first solenoid valve 60 and second solenoid valve 80 is closed, the ice water circulation water pump 91 is run, and will be stored in the storage
The latent heat of ice production apparatus 90 is exchanged by the ice water heat exchanger 93 to the environmental test chamber 300, by the way that ice water is passed through ice water
Heat exchanger 93 carries out heat exchange with the high temperature air in environmental test chamber 300, realizes to the waste heat in environmental test chamber 300
Cool down so that environmental test chamber 300 keeps preset high-temperature temperature constant, and the ice water circulation water pump 91 has frequency conversion work(
Can, by the ice water flow of frequency control inflow ice water heat exchanger 93, in the useful space for accurately controlling environmental test chamber 300
Air themperature, in addition, the pipeline between ice water circulation water pump 91 and ice water heat exchanger 93 is additionally provided with entering water electromagnetic valve 97.
Further, the energy saver further includes controller (not shown), the compressor 10, the first solenoid valve 60,
Ice water circulation water pump 91 is all connected with the controller；
When the environmental test chamber 300 cools down, the controller controls the conducting of the first solenoid valve 60, ice water circulation water pump
91 operations will be stored in the latent of the ice storage unit 90 while using the first coolant loop to environmental test chamber cooling 300
Heat is exchanged by the ice water heat exchanger 93 to the environmental test chamber 300.
In the present embodiment, special in the environmental test chamber 300 alternately cyclic process of simulation low temperature environment and hot environment
It is not to be down to 20 DEG C or less during environmental test chamber 300 is from high temperature rapid drawdown to low temperature, namely in 20 DEG C or more of high temperature
Low temperature when, in order to reduce compressor 10 acting generate energy consumption, can also using the first coolant loop to environmental test chamber
While 300 cooling, ice water circulation water pump 91 is opened by the latent heat of condensation of the ice water storage in ice storage unit 90, is changed by ice water
Hot device 93 is discharged into environmental test chamber 300 so that environmental test chamber 300 at this time utilizes the first coolant loop and freezing simultaneously
Water-flow circuit carries out acceleration cooling, can be further reduced the acting of compressor 10, saves energy consumption.
Further, referring to figs. 1 to 3, the refrigeration system 100 further includes connecting the air compressor machine 94 of the ice storage unit 90
With third solenoid valve 92, the third solenoid valve 92 is set between the ice storage unit 90 and air compressor machine 94, the air compressor machine
94 and third solenoid valve 92 be all connected with the controller, in 90 ice-reserving energy storage of the ice storage unit, control air compressor machine 94 is to institute
It states ice storage unit 90 and is filled with compressed air.
In the present embodiment, the refrigeration system 100 further includes air compressor machine 94 and third solenoid valve 92, the air compressor machine 94
The ice storage unit 90 is connected by third solenoid valve 92, the air compressor machine 94 and third solenoid valve 92 are all connected with environmental test chamber
300 controller, when environmental test chamber 300 keeps cryogenic thermostat, refrigeration system 100 fills ice-reserving by the second coolant loop
90 carry out ice-reserving energy storage are set, the water that refrigerant absorbs in ice storage unit 90 makes its temperature be down to freezing point, and liquid water congeals into ice, storage
The latent heat that refrigerant carries, in order to keep the ice layer thickness that liquid water is condensed in the outside wall surface of the refrigerant coil pipe of ice storage unit 90 uniform,
It needs to control and be conducted on third solenoid valve 92, while controlling air compressor machine 94 and pouring compressed air to the ice storage unit 90, it is right
Liquid water in ice storage unit 90 is disturbed.
Further, referring to figs. 1 to 3, the refrigeration system 100 further includes connecting the 4th electricity of the ice water heat exchanger 93
Magnet valve 95, the 4th solenoid valve 95 connect the controller, control the ice water in the ice water heat exchanger 93 flow back to it is described
Ice storage unit 90.
In the present embodiment, environmental test chamber 300 is during keeping high temperature constant, in fact it could happen that empty in the useful space
When temperature degree is close to ice water temperature or less than ice water temperature, the ice water in ice water heat exchanger 93 becomes extra load, and has
Icing frost heave causes the possibility of heat-exchanger copper tracheal rupture, needs control ice water circulation water pump out of service at this time, entering water electromagnetic valve
97 close, and control and are conducted on the 4th solenoid valve 95, increase the air pressure in ice water heat exchanger 93, make the ice in ice water heat exchanger 93
Water flows back to the ice storage unit 90 by the ice water circulation water pump 91 that acts through of gravity or external atmospheric pressure.
Further, the ice storage unit 90 includes Ice Storage Tank, refrigerant coil pipe, water distributor and water collector, the refrigerant disk
Pipe is evenly arranged in the Ice Storage Tank, and the water distributor is set to the water inlet of the Ice Storage Tank, and cycle ice water is uniformly led
It is flow to the outer surface of the refrigerant coil pipe, the water collector is set to the water outlet of the Ice Storage Tank, collects refrigerant coil surface
Ice water and be guided to the freezing water-flow circuit.
In the present embodiment, the ice storage unit 90 includes Ice Storage Tank, refrigerant coil pipe, water distributor, water collector, the ice-reserving
Slot is for holding liquid water, and to exchange heat with the refrigerant in refrigerant coil pipe, the refrigerant coil pipe is evenly arranged in the storage
In ice bank, to realize uniform heat exchange with the liquid water in Ice Storage Tank, the refrigerant coil pipe can be aluminum pipe or copper pipe, in this reality
It is preferably copper pipe to apply in example, and in ice water circulation, cycle ice water is flowed uniformly through by water distributor in 90 cross section of ice storage unit
The outer surface of every refrigerant coil pipe so that the outer wall ice-melt of refrigerant coil pipe is uniform, while recycling ice water and to store by water collector
90 cross section of ice production apparatus, which discusses position ice water warmly, can enter freezing water-flow circuit so that refrigerant coil pipe outside wall surface ice-melt is uniform.
Further, the refrigeration system 100 further includes being set to the conductivity sensor of the ice storage unit 90 (not scheme
Show), the ice layer thickness of the refrigerant coil pipe outer wall is detected, when detecting that the ice sheet of refrigerant coil pipe outer wall reaches preset thickness,
It controls second solenoid valve 80 to close, in order to which subsequent ice-melt operates, and prevents the ice sheet of refrigerant coil pipe outside wall surface blocked up, make
It is ruptured at refrigerant coil pipe.
Further, referring to figs. 1 to 3, the refrigeration system 100 further includes oil eliminator 20 and device for drying and filtering 40, institute
Oil eliminator 20 is stated to be set between the compressor 10 and condenser 30, it is main to use with refrigerant circulation to 10 fuel feeding of compressor
Lubrication in compressor 10 and cooling, the device for drying and filtering 40 are set between the condenser 30 and second solenoid valve 80,
It mainly prevents liquid refrigerants from entering compressor 10, compressor 10 is damaged.
Present invention further propose that a kind of environmental test chamber.
With reference to figure Fig. 2 and 3, in the present embodiment, environmental test chamber 300 includes energy saver as described above and setting
Circulating fan 310 (not shown) in 300 top of the environmental test chamber.
In the present embodiment, the energy saver includes refrigeration system 100 and heating system, and the refrigeration system 100 is wrapped
Include compressor 10, condenser 30, the first solenoid valve 60, restricting element 50, evaporator 70, second solenoid valve 80, ice storage unit 90,
Ice water circulation water pump 91 and ice water heat exchanger 93；The compressor 10, condenser 30, the first solenoid valve 60, restricting element 50,
And the series connection of evaporator 70 forms the first coolant loop, cools down to environmental test chamber 300；The compressor 10, condenser 30,
Second solenoid valve 80, ice storage unit 90 series connection formed the second coolant loop, the ice storage unit 90, ice water circulation water pump 91 and
The series connection of ice water heat exchanger 93 forms freezing water-flow circuit, and the refrigeration system 100 is by second coolant loop to described
Ice storage unit 90 stores latent heat, and the latent heat of the storage of the ice storage unit 90 is discharged by the freezing water-flow circuit, makes institute
State and keep constant temperature in environmental test chamber 300, avoid the energy emptying in 10 operational process of compressor, save energy consumption,
Reduce testing cost.The circulating fan 310 is set to the top of the environmental test chamber 300, is mainly used for forcing effective
Air in space formed it is distinguished and admirable exchange heat in evaporator external, air themperature reduces, and then to the effective of environmental test chamber 300
Space cools down, or to force the air in the useful space to be formed distinguished and admirable in heater strip surface heat exchanging, and air themperature increases, into
And it heats up to the useful space of environmental test chamber 300.
Present invention further propose that a kind of control method of environmental test chamber 300.
It is the flow chart of one embodiment of control method of the environmental test chamber 300 of the present invention with reference to Fig. 4, Fig. 4.
In this embodiment, which includes the following steps：
S10：When detecting that the environmental test chamber 300 is switched on, the unlatching of the circulating fan 310 is controlled；
S20：When receiving product testing instruction, the refrigeration system is controlled by the first coolant loop to the environment
Chamber 300 cools down；
S30：When temperature in the environmental test chamber 300 is down to the first preset temperature, it is logical to control the refrigeration system
It crosses the second coolant loop and stores latent heat to the ice storage unit；
S40：After preset time, it is out of service to control the refrigeration system, controls the heating system operation to described
Environmental test chamber 300 heats up；
S50：When temperature in the environmental test chamber 300 rises to the second preset temperature, the ice water circulation water is controlled
Pump operation exchanges the latent heat for being stored in the ice storage unit to the environmental test chamber 300 by the ice water heat exchanger.
In the present embodiment, the circulating fan 310 is opened namely environmental test chamber when environmental test chamber 300 is switched on
300 while power on booting, and circulating fan 310 also opens operation immediately.
With further reference to Fig. 1, the refrigeration system 100 of the controller control environmental test chamber 300 and heating system operation,
Low temperature or hot environment are simulated in the useful space of environmental test chamber 300, and the work(under low temperature or hot environment is carried out to product
It can test.When receiving product testing instruction, control refrigeration system is by the first coolant loop to the environmental test chamber 300
Cool down, namely low temperature environment is simulated according to pre-set control program, at this point, controlling the first solenoid valve 60 by controller
On conduct, second solenoid valve 80 power-off close, from compressor 10 be discharged condensed 30 decrease temperature and pressure of device of high-temperature gas refrigerant
50 further reducing pressure by regulating flow of restricting element is entered by the first solenoid valve 60 later, is finally passed through in evaporator 70 and the useful space
Hot-air carry out heat exchange, absorb the heat of vaporization that hot-air carries and enter compressor 10 at gaseous coolant and re-compress into height
The gaseous coolant of warm high pressure, into subsequent cycle, until the temperature in environmental test chamber 300 is down to the first preset temperature；At this point,
Since environmental test chamber 300 needs to keep the first pre-set temperature constant, need to control compressor 10 with minimum load operation, simultaneously
Part refrigerant after control compressor 10 does work is not involved in the heat exchange in 300 useful space of environmental test chamber, but by the portion
Divide refrigerant to exchange heat into ice storage unit 90 by second solenoid valve 80, the latent heat which carries is stored in the storage
Ice production apparatus 90, the part refrigerant carry out heat exchange in ice storage unit 90 with the water in ice storage unit 90, absorb the heat in water,
The reduction of its temperature is set to congeal into ice, which is stored in the ice of ice storage unit 90 by heat is carried in the form of the latent heat of condensation
In water.
After environmental test chamber 300 maintains the first pre-set temperature constant preset time, the test of switch test product is needed
Environment is needed the low temperature environment in the useful space of environmental test chamber 300 switching to hot environment, namely is tried environment at this time
Tryoff 300 heats up, at this time, it may be necessary to control, refrigeration system is out of service, and heating system starts operation, namely control compressor
10 is out of service, controls heater heating power, it is distinguished and admirable in heater strip that circulating fan 310 forces the air in the useful space to be formed
Surface heat exchanging, air themperature increases, and then heats up to the useful space, until in the temperature in environmental test chamber 300
The second preset temperature is risen to, is generally set in 25 DEG C；At this point, since environmental test chamber 300 needs to keep the second preset temperature permanent
It is fixed, but will produce certain heat when test product power up test, and also the partial heat is not enough to maintain compressor 10 again
With minimum load operation, the controller controls the first solenoid valve 60 and the closing of second solenoid valve 80, the ice water circulation water pump
91 operations exchange the latent heat for being stored in the ice storage unit 90 to the environmental test chamber by the ice water heat exchanger 93
300, heat exchange is carried out with the high temperature air in environmental test chamber 300 by the way that ice water is passed through ice water heat exchanger 93, is realized to ring
Waste heat in border chamber 300 cools down so that environmental test chamber 300 maintains the second pre-set temperature constant, the ice
Water water circulating pump 91 has frequency conversion function, and the ice water flow of ice water heat exchanger 93 is flowed by frequency control, accurately controls environment
Air themperature in the useful space of chamber 300.
The control method of the environmental test chamber 300 of the present invention, will be in the environmental test chamber 300 by the first coolant loop
Temperature be down to the first preset temperature after, using the second coolant loop to the ice storage unit store latent heat, in environmental test chamber
After temperature in 300 rises to the second preset temperature, the latent of the ice storage unit storage is discharged by the freezing water-flow circuit
Heat makes to keep the second pre-set temperature constant in the environmental test chamber 300, avoids the energy during compressor operating and puts
Sky saves energy consumption, reduces testing cost.
Further, cooled down to the environmental test chamber by the first coolant loop in the control refrigeration system
When, the ice water circulation water pump operation is also controlled, the latent heat for being stored in the ice storage unit is handed over by the ice water heat exchanger
Shift to the environmental test chamber.
In the present embodiment, special in the environmental test chamber 300 alternately cyclic process of simulation low temperature environment and hot environment
It is not to be down to 20 DEG C or less during environmental test chamber 300 is from high temperature rapid drawdown to low temperature, namely in 20 DEG C or more of high temperature
Low temperature when, in order to reduce compressor 10 acting generate energy consumption, can also using the first coolant loop to environmental test chamber
While 300 cooling, ice water circulation water pump 91 is opened by the latent heat of condensation of the ice water storage in ice storage unit 90, is changed by ice water
Hot device 93 is discharged into environmental test chamber 300 so that environmental test chamber 300 at this time utilizes the first coolant loop and freezing simultaneously
Water-flow circuit carries out acceleration cooling, can be further reduced the acting of compressor 10, saves energy consumption.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of energy saver of environmental test chamber, which is characterized in that the energy saver includes refrigeration system,
The refrigeration system includes compressor, condenser, the first solenoid valve, restricting element, evaporator, second solenoid valve, ice-reserving
Device, ice water circulation water pump and ice water heat exchanger；
The compressor, condenser, the first solenoid valve, restricting element and evaporator series form the first coolant loop；
The compressor, condenser, second solenoid valve, ice storage unit connect to form the second coolant loop；
The ice storage unit, ice water circulation water pump and ice water heat exchanger connect to form freezing water-flow circuit；
The refrigeration system stores latent heat by second coolant loop to the ice storage unit, and is followed by the chilled water
Loop back path discharges the latent heat of the ice storage unit storage, makes to keep constant temperature in the environmental test chamber；
The refrigeration system further includes connecting the 4th solenoid valve of the ice water heat exchanger, and the 4th solenoid valve is for controlling ice
Ice water in water- to-water heat exchanger flows back to the ice storage unit；
The energy saver further includes heating system and controller, the compressor, the first solenoid valve, second solenoid valve, ice water
Water circulating pump and heating system are all connected with the controller；
When the environmental test chamber cools down, the controller controls the first solenoid valve conduction, second solenoid valve is closed so that from
The high-temperature gas refrigerant of compressor discharge only flows into the first coolant loop；
When the environmental test chamber cools down, the controller controls the first solenoid valve conduction, ice water circulation water pump operation, in profit
While cooling to environmental test chamber with the first coolant loop, the latent heat for being stored in the ice storage unit is changed by the ice water
Hot device is exchanged to the environmental test chamber；
When the environmental test chamber keeps cryogenic thermostat, the controller controls the first solenoid valve and second solenoid valve conducting,
Part refrigerant stores latent heat by the second coolant loop to the ice storage unit；
When the environmental test chamber heats up, the compressor is out of service, the heating system operation heating；
When the environmental test chamber keeps high temperature constant temperature, the controller controls the first solenoid valve and second solenoid valve is closed,
The ice water circulation water pump operation exchanges the latent heat for being stored in the ice storage unit to the ring by the ice water heat exchanger
Border chamber.
2. energy saver according to claim 1, which is characterized in that the refrigeration system further includes the connection ice-reserving dress
The air compressor machine and third solenoid valve set, the third solenoid valve are set between the ice storage unit and air compressor machine, the pneumatics
Machine and third solenoid valve are all connected with the controller, in the ice storage unit ice-reserving energy storage, control air compressor machine to the ice-reserving
Device is filled with compressed air.
3. energy saver according to claim 1, which is characterized in that the ice storage unit include Ice Storage Tank, refrigerant coil pipe,
Water distributor and water collector, the refrigerant coil pipe are evenly arranged in the Ice Storage Tank, and the water distributor is set to the Ice Storage Tank
Water inlet, ice water will be recycled and be uniformly guided to the outer surface of the refrigerant coil pipe, the water collector is set to the Ice Storage Tank
Water outlet, collect refrigerant coil surface ice water simultaneously be guided to the freezing water-flow circuit.
4. energy saver according to claim 3, which is characterized in that the refrigeration system further includes being set to the ice-reserving
The conductivity sensor of device detects the ice layer thickness of the refrigerant coil pipe outer wall.
5. energy saver according to claim 1, which is characterized in that the refrigeration system further includes oil eliminator and drying
Filter, the oil eliminator are set between the compressor and condenser, and the device for drying and filtering is set to the condensation
Between device and second solenoid valve.
6. a kind of environmental test chamber, which is characterized in that the environmental test chamber includes energy saving as described in any one of claim 1 to 5
Device and the circulating fan for being set to the environmental test box top.
7. a kind of control method of the environmental test chamber described in claim 6, which is characterized in that the control method includes following step
Suddenly：
When receive product testing instruction when, control the refrigeration system by the first coolant loop to the environmental test chamber into
Row cooling；
When temperature in the environmental test chamber is down to the first preset temperature, controls the refrigeration system and returned by the second refrigerant
Ice storage unit described in road direction stores latent heat；
After preset time, it is out of service to control the refrigeration system, controls the heating system operation to the environmental test
Case heats up；
When temperature in the environmental test chamber rises to the second preset temperature, the ice water circulation water pump operation is controlled, will be deposited
The latent heat for being stored in the ice storage unit is exchanged by the ice water heat exchanger to the environmental test chamber.
8. the control method of environmental test chamber according to claim 7, which is characterized in that logical controlling the refrigeration system
When crossing the first coolant loop and cooling down to the environmental test chamber, the ice water circulation water pump operation is also controlled, will be stored in
The latent heat of the ice storage unit is exchanged by the ice water heat exchanger to the environmental test chamber.
9. the control method of environmental test chamber according to claim 7, which is characterized in that described to receive product testing
When instruction, before controlling the step of refrigeration system cools down to the environmental test chamber by the first coolant loop, also
Including step：
When detecting the environmental test chamber booting, controls the circulating fan and open.
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| CN107678462B (en) * | 2017-11-01 | 2022-12-20 | 泰安磐然测控科技有限公司 | Constant-speed tank, constant-speed cooling system for constant-speed tank and constant-speed cooling method for constant-speed tank |
| CN112108200A (en) * | 2020-10-15 | 2020-12-22 | 深圳市大稳科技有限公司 | High-low temperature test device |
| CN113074499A (en) * | 2021-03-17 | 2021-07-06 | 广东大稳节能测试设备有限公司 | Energy consumption saving device of environmental test chamber, environmental test chamber and control method thereof |
| JP7490613B2 (en) | 2021-05-13 | 2024-05-27 | エスペック株式会社 | Environment creating device, program, and method for controlling blower fan |
| CN117299251B (en) * | 2023-11-30 | 2024-02-13 | 珠海格力电器股份有限公司 | Working condition switching method and device for high-low temperature test box and high-low temperature test box |
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