CN107014141A - A kind of freezing and refrigeration cabinet performance testing device air treatment system - Google Patents
A kind of freezing and refrigeration cabinet performance testing device air treatment system Download PDFInfo
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- CN107014141A CN107014141A CN201710194779.9A CN201710194779A CN107014141A CN 107014141 A CN107014141 A CN 107014141A CN 201710194779 A CN201710194779 A CN 201710194779A CN 107014141 A CN107014141 A CN 107014141A
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- box body
- freezing
- unit box
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000005057 refrigeration Methods 0.000 title claims abstract description 30
- 230000008014 freezing Effects 0.000 title claims abstract description 27
- 238000007710 freezing Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims description 28
- 239000010949 copper Substances 0.000 claims description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 27
- 239000003507 refrigerant Substances 0.000 claims description 18
- 238000005485 electric heating Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010257 thawing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000009423 ventilation Methods 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The present invention relates to a kind of freezing and refrigeration cabinet performance testing device air treatment system.The present invention includes the unit box body being arranged in test, unit box body side is provided with to be entered and the return air inlet with primary efficient filter screen for air, provided with the first evaporator set along air-flow direction, the second evaporator, rearmounted electric heater, dry saturated steam humidification jet pipe and blower fan in unit box body, first evaporator and the first Condensing units are used for the cooling-dehumidifying air to 35~0 DEG C, second evaporator and the second Condensing units are used for the cooling-dehumidifying air to 0~50 DEG C, and unit box body is provided with the bypass air-valve for being expelled directly out partial air.The present invention can be handled the air in a wide range of temperature, the corresponding cooling cycle system of selective enabling can be prevented effectively from cooling cycle system pressure it is excessive and to equipment cause damage, improve cooling cycle system security.The present invention can with depth dehumidify and accurately attain subject unit humiture requirement.
Description
Technical field
The invention belongs to freezing and refrigeration cabinet equipment technical field of performance test, a kind of freezing and refrigeration cabinet performance is specifically related to
Test device air treatment system.
Background technology
Fresh, fruit storage problem causes freezing and refrigeration cabinet largely to come into operation.Therefore, the performance of freezing and refrigeration cabinet is surveyed
Trial assembly, which is put, also urgently to be developed.Temperature, humidity and air current composition that the performance testing device of freezing and refrigeration cabinet is used in simulated environment
Every air conditionses under freezing and refrigeration cabinet practical service environment are close to, so as to ensure that freezing and refrigeration cabinet can be in actual environment
Middle normal work.Patent of invention CN103217310A discloses a kind of food freezer performance test device, and the device is using air-supply
Orifice plate is parallel with air orifice plate to send air manner, using air orifice plate is equably sent, so as to obtain stable air flow method and fit
Suitable wind speed air quantity, the real normal wind speed of simulated foods refrigerator and humiture environment.Evaporated in the refrigerating circuit of the device
Device is formed in parallel by the evaporation coil of three independent refrigeration systems, on the basis of existing evaporator is only capable of realizing heat exchange
The exchange between refrigeration working medium is realized, caused working medium uneven to air-treatment during each refrigeration system independent operating is reduced
Difference between thermodynamic properties, so that the disposal ability of air-treatment unit is further increased, while improving air-treatment effect
Really, the uniformity and stability of air-treatment are increased.But the shortcoming of the device is that refrigerating circuit is not suitable for true environment
The air of middle large temperature range is handled, and aging effects are serious after refrigerating circuit long-term work.Evaporated in the other device
Device is limited to the effect on moisture extraction of air, and use requirement can not be then met for some work condition environments for needing depth to dehumidify.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of freezing and refrigeration cabinet performance testing device air-treatment system
System.
In order to realize the purpose of the present invention, present invention employs following technical scheme：
A kind of freezing and refrigeration cabinet performance testing device air treatment system, it is characterised in that：Including being arranged between test
Interior unit box body, the unit box body side is provided with to be entered and the return air inlet with primary efficient filter screen, the set box for air
In vivo provided with the first evaporator, the second evaporator, rearmounted electric heater and the dry saturated steam set gradually along air-flow direction
The jet pipe and blower fan of humidifier connection, the rearmounted electric heater are located at the second evaporator air outlet overlying regions, institute
The first outer Condensing units match the cooling-dehumidifying air for p- 35~0 DEG C between stating the first evaporator and testing, described
The second outer Condensing units are matched for the cooling-dehumidifying air to 0~50 DEG C, the machine between second evaporator and test
The bypass air-valve for being expelled directly out the partial air entered from the return air inlet in unit box body is additionally provided with group casing.
Further, the unit box body side where the bypass air-valve and the unit box body side where the return air inlet
It is adjacent, and the return air inlet is located at the second evaporator air outlet rear, the bypass air-valve is venetian blind type structure.
Further, first Condensing units, the second Condensing units sharing cooling tower, first compression
Condensation unit, the second Condensing units are each configured with being provided with load energy regulation on two compressors, the compressor
Controlling switch.
Further, the assembling is at the top of the unit box body, top regions between the outlet and test of the blower fan
The air duct connection in domain, it is outside between the test that the variable-frequency motor used with the matched with blower is installed.
Further, the preposition electric heater preheated to air, the air warp are additionally provided with the unit box body
Pass through first evaporator to realize the defrosting to the first evaporator plate pipeline section after the preposition electric heater preheating.
Further, first evaporator, the second evaporator are fin-tube heat exchanger, the fin tube type heat exchange
The coil section of device includes some copper pipes in a row that are arranged in parallel along windward side, flow direction arrangement of the copper pipe along wind
There is the copper pipe between 6~10 rows and adjacent row to be staggeredly arranged, the fin being arranged on the copper pipe is the stainless steel plate of four Edge Bends；
The total feed liquor pipe diameter of refrigerant is less than the diameter of the total gas collection outlet of refrigerant in the fin-tube heat exchanger, the copper pipe
Diameter is less than the total feed liquor pipe diameter of the refrigerant.
Further, it is provided with below the jet pipe at the first drip tray being in tilted layout, the low level of first drip tray
It is connected with the first drainage pipeline；The unit box body inner bottom part is provided with the second water receiving being in tilted layout and for collecting condensed water
Disk, second drip tray, which is located at first evaporator, the second evaporator lower section, the low level of second drip tray, to be connected
There is the second drainage pipeline.
Further, the rearmounted electric heater includes power fixation electric heating unit, power adjustable electric heating unit, institute
State rearmounted electric heater be configured with too high temperature of air then stop heating protection switch and blower fan import and export blast it is too small
When stop heating pressure difference switch.
Further, row's spacing of the copper pipe is 30~35mm, and often row includes 50~55 copper pipes, often arranges interior adjacent copper
The spacing of pipe is 35~40mm and is 1.25~1.5 times of calibers, and the length-width ratio of the copper pipe is 10.
The beneficial effects of the present invention are：
(1) the first evaporator of the present invention and the first Condensing units are responsible for the air of p- 35~0 DEG C of temperature ranges
Handled, second evaporator is responsible for handling the air of 0~50 DEG C of temperature range with the second Condensing units.
When measurement condition dry-bulb temperature is higher than 0 DEG C, second Condensing units are run, when measurement condition dry-bulb temperature is less than 0
DEG C or when needing artificial snow-making, run first Condensing units.The present invention can meet to -35 in true environment~50 temperature
The air of scope is handled, and is the distribution according to air themperature, the corresponding cooling cycle system of selective enabling, effectively
Avoid that cooling cycle system pressure is excessive and damage that caused to equipment, system is also improved while extension device service life
The security of SAPMAC method system.
In addition, the air quantity that bypass air-valve of the present invention can pass through the evaporator is reduced, realize air with small
Air quantity is by the evaporator, when the refrigerating capacity change of evaporator is not very notable or constant holding, then through pervaporation
The enthalpy difference for the air that device is imported and exported will increase, and air will be handled by depth cooling and dehumidifying, embody the big enthalpy difference enhancing of small air quantity and remove
The effect of wet effect.The present invention can not only be dehumidified with depth, and there is the air after depth dehumidifies bigger humidity to adjust
Surplus amount, then the humiture requirement of subject unit can more precisely be reached by dry saturated steam humidification jet pipe humidification.This
Invention can make the environment in test meet different working condition requirements, and larger work is required especially for some moisture removals
Condition.The present invention more can accurately simulate air conditionses of the freezing and refrigeration cabinet under true environment, be conducive to improving freezing
The performance test precision of refrigerator.
Because the air current composition temperature around the first evaporator, the second evaporator is relatively low and density big, and electric heater is all
The air current composition temperature enclosed is compared with high and density is small, when air enters from the return air inlet, then formd in unit box body from lower and
On airflow circulating, so as to be conducive to accelerating the heat transfer rate of air and the first evaporator or the second evaporator.In addition described the
One evaporator be arranged on the front of the second evaporator, i.e. air first pass through the first evaporator again pass through the second evaporator, such as when
Between test during 2 DEG C/1 DEG C of wet and dry bulb temperature, first evaporator is easier to frosting, when running first evaporator, can be with
Effectively reduce time of second evaporator under frozen condition, it is to avoid asking for frosting occurs in second evaporator
Topic.
(2) the bypass air-valve is venetian blind type structure, and the regulation of open degree can be carried out by automatic or manual mode.
When running into the operating mode for needing progress depth dehumidifying, the bypass air-valve, the structure of bypass air-valve of the present invention are opened
Simply, open degree can easily be accommodated, and realize that the effect of air depth dehumidifying is protruded.
(3) the first Condensing units, the second Condensing units are equipped with two compressors, and compressed in the present invention
Machine adjusts controlling switch with load energy, such as 50% load may be selected and 100% two grades of load is run, so can be with
More accurate regulating and controlling temperature, the significantly more efficient ambient temperature conditions for simulating needs.
(4) use of variable-frequency motor can realize the stepless speed regulation of blower fan in the present invention, in order to carry out constant pressure to air
Or the control of constant flow, and allow air to easily form loop control loop so that fan operation energy consumption is most saved, can be with
Meet the environmental requirement such as wind speed, air quantity of simulation required between testing.Variable-frequency motor, which is used, in the present invention lengthens drive shaft, so as to
Outside variable-frequency motor is placed between test, internal temperature is subcooled and influences variable-frequency motor just between can so avoiding test
Often operation, it is ensured that internal temperature and humidity conditions is accurate between test, can preferably simulate outdoor environment.
(5) such as when 2 DEG C/1 DEG C of wet and dry bulb temperature between test, the first evaporator plate pipeline section is easy to frosting, when
During the first evaporator plate pipeline section frosting, open the preposition electric heater and the pre-heat treatment is carried out to air, so that blowing the
Hot blast on one evaporator plate pipeline section, which melts the frost on the first evaporator plate pipeline section, to be removed, while can also improve the first evaporator
To the effect of cooling-dehumidifying air.
(6) the first evaporator of the present invention, the second evaporator use combined type caliber：The total feed tube of refrigerant
Interior is gas-liquid two-phase, only gas phase in the total gas collection outlet of refrigerant, so by the diameter of the total feed tube of the refrigerant
The diameter for being set smaller than copper pipe in the caliber of the total gas collection outlet of the refrigerant, the evaporator is minimum.The combined type
Caliber is by controlling the total feed tube caliber of evaporator less than total gas collection outlet caliber, in the case that total feed tube caliber is small,
The gas-liquid two-phase cold-producing medium amount of entrance is suitable, is further further separated into the smaller copper pipe of caliber, and total gas collection outlet caliber is big,
The refrigerant vapour for being conducive to fully quick discharge evaporator inner refrigerant vaporization to produce, it is therefore prevented that the refrigerant that vaporization is produced steams
Vapour aggressiveness, so as to hinder the efficiency of refrigerant vaporization, improves evaporator heat exchange performance inside evaporator.
The arrangement of the combined type caliber and the copper pipe can be realized under conditions of identical windward side air mass flow,
Heat exchange amount is improved, and is significantly reduced by the air drag of evaporator plate pipeline section, in other words the present invention can be met by changing
Wind face air mass flow improves evaporator heat exchange performance.
(7) first drip tray is used to collect the condensed water at the dry saturated steam humidification jet pipe, second drip tray
For the condensed water for collecting first evaporator, air is formed after cooling and dehumidifying at the second evaporator, first water receiving
Disk, the second drip tray are obliquely installed, in order to which the condensed water being collected into is completely exhausted out in unit box body by drainage pipeline.
(8) the rearmounted electric heater is such as by 45kW adjustable electric heating unit and 15kW fixation electric heating unit structure
Into can so meet temperature of the subject freezing and refrigeration cabinet under different operating modes by adjusting the power of adjustable electric heating unit
It is required that, and temperature adjustment is precisely, it is wider using scope.The protection switch or pressure difference switch are to be used to protect electrical heating
Device, to prevent electric heating tube from occurring dry combustion method.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is evaporation structure schematic diagram.
The implication marked in accompanying drawing is as follows：
Between 1- tests；2- unit box bodies；3- return air inlets；The evaporators of 4- first；The evaporators of 5- second；The rearmounted electrical heating of 6-
Device；7- jet pipes；8- blower fans the first Condensing units of 9-；The Condensing units of 10- second；11- bypasses air-valve；12- is humidified
Device；13- cooling towers；14- air ducts；15- variable-frequency motors；The preposition electric heaters of 16-；17- copper pipes；The drip trays of 18- first；
The drip trays of 19- second.
Embodiment
More specific detail is made to technical solution of the present invention with reference to embodiment：
As shown in figure 1, the present invention includes being arranged on the unit box body 2 between test in 1, the unit box body 2 is provided with supplying
Air enters and the return air inlet 3 with primary efficient filter screen, is provided with what is set gradually along air-flow direction in the unit box body 2
First evaporator 4, the second evaporator 5, rearmounted electric heater 6, the jet pipe 7 and blower fan 8 being connected with dry steam humidifier 12, institute
Rearmounted electric heater 6 is stated positioned at the air outlet overlying regions of the second evaporator 5, first evaporator 4 and the first compression are cold
Solidifying unit 9 is supporting, and second evaporator 5 and the second Condensing units 10 are supporting, be additionally provided with the unit box body 2 by from
The bypass air-valve 11 that the partial air that the return air inlet 3 enters in unit box body 2 is expelled directly out.
The Condensing units 9 of first evaporator 4 and first of the present invention are responsible for the air of p- 35~0 DEG C of temperature ranges
Handled, second evaporator 5 is responsible for the air of 0~50 DEG C of temperature range with the second Condensing units 10
Reason.When measurement condition dry-bulb temperature is higher than 0 DEG C, second Condensing units 10 are run, when measurement condition dry-bulb temperature
Less than 0 DEG C or when needing artificial snow-making, first Condensing units 9 are run.The present invention can meet to -35 in true environment~
The air of 50 temperature ranges is handled, and is the distribution according to air themperature, the corresponding kind of refrigeration cycle system of selective enabling
System, effectively prevent that cooling cycle system pressure is excessive and damage that caused to equipment, while extension device service life
Improve the security of cooling cycle system.
In addition, bypass air-valve 11 of the present invention can pass through first evaporator 4, the wind of the second evaporator 5
Amount is reduced, and it, by the evaporator, is not very notable or guarantor when the refrigerating capacity of evaporator changes with small air quantity to realize air
When holding constant, then it will increase by the enthalpy difference of the air of evaporator inlet-outlet, air will be handled by depth cooling and dehumidifying, and embodied
The small big enthalpy difference of air quantity strengthens the effect of effect on moisture extraction.The present invention can not only be dehumidified with depth, and the sky after depth dehumidifies
Gas has bigger humidity regulation surplus, then can more precisely reach subject by the dry saturated steam humidification humidification of jet pipe 7
The humiture requirement of unit.The present invention can make the environment in test meet different working condition requirements, especially for some
Moisture removal requires larger operating mode.The present invention more can accurately simulate air bar of the freezing and refrigeration cabinet under true environment
Part, is conducive to improving the performance test precision of freezing and refrigeration cabinet.
Because the air current composition temperature around the first evaporator 4, the second evaporator 5 is relatively low and density big, and electric heater 8
Around air current composition temperature compared with high and density is small, when air enters from the return air inlet, then formd in unit box body 2 under oneself
And on airflow circulating, so as to be conducive to accelerating the heat transfer rate of air and the first evaporator 4 or the second evaporator 5.Other institute
State the front that the first evaporator 4 is arranged on the second evaporator 5, i.e. air and first pass through the first evaporator 4 again by the second evaporator
5, such as when 2 DEG C/1 DEG C of wet and dry bulb temperature between test, first evaporator 4 is easier to frosting, runs first evaporation
During device 4, time of second evaporator 5 under frozen condition can be effectively reduced, it is to avoid second evaporator 5 goes out
The problem of existing frosting.
The power of motor that compressor is configured in the first Condensing units 9 described in the present embodiment is 62kW, described second
The power of motor that compressor is configured in Condensing units 10 is 17.5kW, it is clear that compressor in the first Condensing units 9
Power of motor is significantly larger than the power of motor of compressor in the second Condensing units 10.
The side of unit box body 2 where the bypass air-valve 11 and the side phase of unit box body 2 where the return air inlet 3
Neighbour, and the return air inlet 3 is located at the air outlet rear of the second evaporator 5.The bypass air-valve 11 is venetian blind type structure, can
To carry out the regulation of open degree by automatic or manual mode.When running into the operating mode for needing progress depth dehumidifying, open described
Air-valve 11 is bypassed, of the present invention to bypass the simple in construction of air-valve 11, open degree can easily be accommodated, realize that air depth dehumidifies
Effect protrude.
First Condensing units 9, the second Condensing units 10 are installed between the test 1 outside and the two is common
With cooling tower 13, first Condensing units 9, the second Condensing units 10 are each configured with two compressors, described
Load energy regulation controlling switch is provided with compressor.First Condensing units 9, the second Condensing units in the present invention
10 are equipped with two compressors, and compressor adjusts controlling switch with load energy, such as may be selected 50% load and
100% two grades of load is run, so can more accurate regulating and controlling temperature, the significantly more efficient environment temperature for simulating needs
Degree condition.
The blower fan 8 is arranged on the top of unit box body 2, the sky of 1 top area between the outlet and test of the blower fan 8
Gas passage 14 is connected, 1 between the test outside be provided with and the matching used variable-frequency motor 15 of the blower fan 8.Become in the present invention
The use of frequency motor 15 can realize the stepless speed regulation of blower fan 8, in order to carry out the control of constant pressure or constant flow to air, and make
Loop control loop can be easily formed by obtaining air so that the operation energy consumption of blower fan 8 is most saved, and can meet required mould between test
The environmental requirements such as wind speed, the air quantity of plan.Variable-frequency motor 15 is using drive shaft is lengthened in the present invention, in order to which variable-frequency motor 15 is put
Outside putting between test, internal temperature is subcooled and influences the normal operation of variable-frequency motor 15 between can so avoiding test, it is ensured that
Internal temperature and humidity conditions is accurate between test, can preferably simulate outdoor environment.
It is additionally provided with the preposition electric heater 16 preheated to air in the unit box body 2, the air is through before described
Put after electric heater 16 is preheated and pass through first evaporator to realize the defrosting to the first evaporator plate pipeline section.Such as
When 2 DEG C/1 DEG C of wet and dry bulb temperature between test, the coil section of the first evaporator 4 is easy to frosting, when the coil pipe of the first evaporator 4
During section frosting, open the preposition electric heater 16 and the pre-heat treatment is carried out to air, so that blowing in the coil pipe of the first evaporator 4
Hot blast in section, which melts the frost in the coil section of the first evaporator 4, to be removed, and air is cooled down while can also improve the first evaporator 4
The effect of dehumidifying.
First evaporator 4, the second evaporator 5 are fin tube type heat exchange in fin-tube heat exchanger, the present embodiment
The size of device is 3190 (W) mm × 314 (D) mm × 2104 (H) mm, and the evaporator size ratio is 9~11:1:6~8, have
Imitate a length of 3100mm, it is slightly shorter than (W) length, about its 97% or so, spacing of fin is 3~5mm, and this example removes 4mm, the copper
Pipe diameter is 14~16mm, and this example takes 15mm, wall thickness to be 0.40~0.50mm, and this example takes 0.45mm, and the bend pipe of connecting copper pipe is thick
Spend for 0.7mm, fin for length of side 1.5mm four Edge Bends stainless steel plate.Evaporator uses combined type described in the present embodiment
In a diameter of 35mm of the total gas collection outlet of a diameter of 28mm of the total feed tube of caliber, wherein refrigerant, refrigerant, the evaporator
A diameter of 22mm of copper pipe, the combined type caliber ratio is 1.2~1.3:1.5~1.7：1, the total feed tube of refrigerant,
The total gas collection outlet of refrigerant is connected to the two ends of the evaporator plate pipeline section.Using combined type caliber evaporator its change
Heat and heat exchange power are significantly improved, and efficiency is essentially identical.8 row's copper pipes are provided with along the flow direction of wind in the present embodiment,
The length-width ratio of copper pipe is about 10, and under the conditions of identical windward side air mass flow, heat exchange amount increases, and heat exchanger air drag shows
Reduction is write, performance of evaporator is improved by changing windward side flow.Plumbers shed is away from too small or excessive can reduce the property of heat exchanger
In tube pitch S1 selections 38mm in energy, preferably 1.25~1.5 times calibers, the present embodiment, the row selection 33mm of interval S 2, the present invention often
The quantity N of copper pipe 17 of row takes 54, quantity N to be 50~55.
The lower section of jet pipe 7, which is provided with the first drip tray 18 being in tilted layout, the low level of first drip tray 18, to be connected
There is the first drainage pipeline；The inner bottom part of unit box body 2 is provided with the second drip tray 19 being in tilted layout and for collecting condensed water,
Second drip tray 19 is located at first evaporator 4, the lower section of the second evaporator 5, the low level of second drip tray 19
It is connected with the second drainage pipeline.First drip tray 18 is used to collect the condensed water at the dry saturated steam humidification jet pipe 7, described
Second drip tray 19 is used for the condensation for collecting first evaporator 4, air is formed after cooling and dehumidifying at the second evaporator 5
Water, first drip tray 18, the second drip tray 19 are obliquely installed, in order to which the condensed water being collected into is passed through into drainage pipeline
It is completely exhausted out in unit box body 2.
The protection switch or pressure difference switch are to be used to protect electric heater, to prevent electric heating tube from occurring dry combustion method.
The rearmounted electric heater 6 includes power and fixes electric heating unit, power adjustable electric heating unit, the rearmounted electric heater 6
It is configured with the pressure that too high temperature of air then stops the protection switch of heating and stops heating when blower fan import and export blast is too small
Difference switch.The rearmounted electric heater 6 is such as made up of 45kW adjustable electric heating unit and 15kW fixation electric heating unit,
Temperature of the subject freezing and refrigeration cabinet under different operating modes can be so met by adjusting the power of adjustable electric heating unit will
Ask, and temperature adjustment is precisely, it is wider using scope.
Claims (9)
1. a kind of freezing and refrigeration cabinet performance testing device air treatment system, it is characterised in that：Including be arranged on test between (1)
Interior unit box body (2), the unit box body (2) is provided with sideways to be entered and the return air inlet (3) with primary efficient filter screen, institute for air
State in unit box body (2) provided with the first evaporator (4) set gradually along air-flow direction, the second evaporator (5), rearmounted
Electric heater (6), the jet pipe (7) and blower fan (8) being connected with dry steam humidifier (12), rearmounted electric heater (6) position
First compression of (1) outside is cold between the second evaporator (5) air outlet overlying regions, first evaporator (4) and test
Solidifying unit (9) matches the cooling-dehumidifying air for p- 35~0 DEG C, second evaporator (5) with test between (1) outside the
Two Condensing units (10) are matched for the cooling-dehumidifying air to 0~50 DEG C, be additionally provided with the unit box body (2) by from
The bypass air-valve (11) that the partial air that the return air inlet (3) enters in unit box body (2) is expelled directly out.
2. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：The side
Unit box body (2) where ventilation valve (11) is adjacent sideways with the unit box body (2) where the return air inlet (3) sideways, and institute
Return air inlet (3) is stated positioned at the second evaporator (5) air outlet rear, the bypass air-valve (11) is venetian blind type structure.
3. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：Described
One Condensing units (9), the second Condensing units (10) sharing cooling tower (13), first Condensing units (9),
Second Condensing units (10) are each configured with being provided with load energy regulation control on two compressors, the compressor and opened
Close.
4. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：The wind
Machine (8) is arranged at the top of the unit box body (2), the air duct of (1) top area between the outlet and test of the blower fan (8)
(14) connect, be provided with and the blower fan (8) matching used variable-frequency motor (15) outside (1) between the test.
5. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：The machine
The preposition electric heater (16) preheated to air is additionally provided with group casing (2), the air is through the preposition electric heater
(16) pass through first evaporator (4) to realize the defrosting to the first evaporator (4) coil section after preheating.
6. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：Described
One evaporator (4), the second evaporator (5) are fin-tube heat exchanger, if the coil section of the fin-tube heat exchanger includes
The dry copper pipe (17) in a row that is arranged in parallel along windward side, the copper pipe (17) is disposed with 6~10 along the flow direction of wind
Copper pipe (17) between row and adjacent row is staggeredly arranged, and the fin being arranged on the copper pipe is the stainless steel plate of four Edge Bends；Institute
State the total feed liquor pipe diameter of refrigerant in fin-tube heat exchanger be less than the total gas collection outlet of refrigerant diameter, the copper pipe it is straight
Footpath is less than the total feed liquor pipe diameter of the refrigerant.
7. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：The spray
Provided with the first drip tray (18) being in tilted layout below pipe (7), first row is connected with the low level of first drip tray (18)
Waterpipe；Unit box body (2) inner bottom part is provided with the second drip tray (19) being in tilted layout and for collecting condensed water, described
Second drip tray (19) is located at first evaporator (4), below the second evaporator (5), second drip tray (19) it is low
The second drainage pipeline is connected with position.
8. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 1, it is characterised in that：After described
Put electric heater (6) and fix electric heating unit, power adjustable electric heating unit including power, the rearmounted electric heater (6) is matched somebody with somebody
It is equipped with the pressure difference that too high temperature of air then stops the protection switch of heating and stops heating when blower fan import and export blast is too small
Switch.
9. freezing and refrigeration cabinet performance testing device air treatment system as claimed in claim 6, it is characterised in that：The copper
The row's spacing for managing (17) is 30~35mm, and often row includes 50~55 copper pipes (17), and the spacing for often arranging interior adjacent copper pipe (17) is
35~40mm and be 1.25~1.5 times of calibers, the length-width ratio of the copper pipe (17) is 10.
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| CN201710194779.9A CN107014141B (en) | 2017-03-28 | 2017-03-28 | Air treatment system for performance test device of freezing and refrigerating cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710194779.9A CN107014141B (en) | 2017-03-28 | 2017-03-28 | Air treatment system for performance test device of freezing and refrigerating cabinet |
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| CN107014141B CN107014141B (en) | 2020-04-21 |
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| CN201710194779.9A Active CN107014141B (en) | 2017-03-28 | 2017-03-28 | Air treatment system for performance test device of freezing and refrigerating cabinet |
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Cited By (6)
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| CN108072132A (en) * | 2018-01-23 | 2018-05-25 | 南通中远克莱芬船舶工程有限公司 | A kind of freezing type dehumidifier |
| CN108151180A (en) * | 2018-01-23 | 2018-06-12 | 南通中远克莱芬船舶工程有限公司 | A kind of Combined dehumidifier |
| CN108895751A (en) * | 2018-07-24 | 2018-11-27 | 华东交通大学 | Air-cooler device in a kind of freezing-cooling storeroom of novel refrigerant piping |
| CN108917247A (en) * | 2018-08-22 | 2018-11-30 | 申联生物医药（上海）股份有限公司 | Refrigeration system and its working method without accumulated ice frost accumulated |
| CN107606843B (en) * | 2017-08-18 | 2019-11-05 | 浙江海洋大学 | A kind of Novel frost-free refrigerator-freezer refrigerating plant with solution dehumidification |
| CN114279146A (en) * | 2021-12-29 | 2022-04-05 | 赣州中祥制冷设备有限公司 | Intelligent freezer that possesses humidity control |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606843B (en) * | 2017-08-18 | 2019-11-05 | 浙江海洋大学 | A kind of Novel frost-free refrigerator-freezer refrigerating plant with solution dehumidification |
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| CN114279146A (en) * | 2021-12-29 | 2022-04-05 | 赣州中祥制冷设备有限公司 | Intelligent freezer that possesses humidity control |
| CN114279146B (en) * | 2021-12-29 | 2024-01-09 | 赣州中祥制冷设备有限公司 | Intelligent freezer that possesses humidity control |
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| CN107014141B (en) | 2020-04-21 |
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