CN204789005U - Food freezer laboratory - Google Patents
Food freezer laboratory Download PDFInfo
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- CN204789005U CN204789005U CN201520482423.1U CN201520482423U CN204789005U CN 204789005 U CN204789005 U CN 204789005U CN 201520482423 U CN201520482423 U CN 201520482423U CN 204789005 U CN204789005 U CN 204789005U
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Abstract
The utility model discloses a food freezer laboratory, including between envelope, variable cross section air supply static pressure space, test environment, variable cross section return air static pressure space, air treatment device, the header pipe that sets up on envelope upper portion, the officious announcement orifice plate of air supply of vertical setting and the officious announcement orifice plate of return air be header pipe lower part space division and variable cross section return air static pressure space between for the variable cross section air supply static pressure space that sets gradually along airflow direction, test environment, the air treatment device sets up outside variable cross section return air static pressure space. The utility model discloses an air distribution is improved to the mode of parallel air supply, and the homogeneous of test indoor air flow and humiture is stable in the time of can guaranteeing to test, really the normal operational environment of simulated foods freezer to guarantee that test indoor temperature and humidity, wind speed reach the serial standard requirement of JBT 7244 -1994 " food freezer ".
Description
Technical field
The utility model belongs to Building Environment and Equipment Engineering technical field, relates to a kind of food refrigerator testing laboratory.
Background technology
Along with socioeconomic development, food refrigerator has become people and to have lived an indispensable part, is therefore vital to the test of refrigerator performance.The utility model be according to simulation food refrigerator normal actual use time residing environment temperature, humidity, illumination and air current composition, thus carry out the properties test of food refrigerator, ensure running normally and efficiently of food refrigerator.Test cabinet simulation can carry out real-time monitoring and analysis to the temperature parameter in food refrigerator, and the practical service environment of its data simulated and refrigerator is more close, and test result is more accurate.
Utility model patent CN201555720U refrigerator and refrigerator-freezer performance test chamber system, described test cabinet stationary. platen is divided between static pressure space and test environment up and down, and test cabinet adopts stationary. platen to improve air current composition, further increases the degree of accuracy of test.
Utility model patent CN201555720U, adopts stationary. platen to some extent solve the problem of existing test cabinet air-supply humiture and air-flow uneven microstructure, but does not improve the overall distribution of air-flow between test environment from structure.Due to the air blow and return design of the air-supply of test cabinet top, one end return air, between test environment, there is air blow and return dead band, thus cause aerial temperature and humidity and air-flow uneven microstructure between test environment.Meanwhile, this air blow and return design makes the air between test environment flow and is not well positioned to meet JB/T7244-1994 " food refrigerator " series standard to the requirement of airflow direction between test environment.Secondly, evaporator in described patent air-treatment unit adopts many group self-contained refrigerating system evaporation coils in the mode of wind side parallel combination, the defect of this arrangement to cause the aerial temperature and humidity after processing uneven, especially when the aerial temperature and humidity entering air-treatment unit between test environment is uneven, this defect is more obvious, and aerial temperature and humidity between test environment can be caused further uneven.
Utility model patent CN201944954U refrigerator safety performance test cabinet side air blow and return air-treatment cabinet layout structure, described air-treatment cabinet is arranged on environmental laboratory side, environmental test chamber is upper and lower be arranged symmetrically with give, return air house steward, and give, the total manage-style of return air does not go out with air-treatment rack, import is connected.Described invention compared with the prior art, solves the problem that place is limited.
Utility model patent CN201944954U, described invention adopts the air blow and return form of sidewall air supply, bottom return air,
Air is mixed by mutually liquidating after both sides air-supply orifice plate entered environment testing laboratory, make air at regional area movement disorder, the humiture of air-flow and the stable of air current composition can not be ensured, there is air flowing problem of non-uniform equally, reduce homogeneity and the stability of air-flow humiture and air current composition in test environment, affect testing precision, meanwhile, the air current composition between test environment well can not meet JB/T7244-1994 " food refrigerator " series standard to the requirement of airflow direction.Secondly, compared with existing test cabinet system, described system relative complex, air circulation flow resistance is large, thus requires large to the draft capacity of air-treatment unit, and power consumption is large.
Summary of the invention
Technical matters: the utility model provides a kind of air themperature humidity can accurately tested in food refrigerator performance, guarantee test process and is in uniform state, thus improves the food refrigerator testing laboratory of measuring accuracy.
Technical scheme: food refrigerator testing laboratory of the present utility model, comprise building enclosure, the Condensing units be arranged on outside described building enclosure, the variable cross section air-supply static pressure space be arranged in building enclosure, between test environment, variable cross section return air static pressure space, air processor and header pipe.Header pipe is positioned at building enclosure top, compartition below header pipe is along between the variable cross section air-supply static pressure space that airflow direction sets gradually, test environment and variable cross section return air static pressure space by the non-homogeneous orifice plate of air-supply of vertical setting and the non-homogeneous orifice plate of return air, air processor is arranged on outside variable cross section return air static pressure space, and air processor is communicated with by header pipe and variable cross section static pressure space of blowing; Variable cross section air-supply static pressure space is that top cross-sectional width is greater than lower section width, and variable cross section return air static pressure space is that top cross-sectional width is less than lower section width.The evaporator that air processor is set gradually by the direction of flowing along air, solar auxiliary heater, electrical auxiliary heater, electric damping device and variable frequency control blower fan form, and evaporator is connected with Condensing units, composition evaporative condenser closed circuit.
Interval from top to bottom of blowing on non-homogeneous orifice plate arranges and organizes wind pushing hole more, and the quantity often organizing wind pushing hole is all few than the quantity of the wind pushing hole above it; Often organize wind pushing hole equal correspondence and be provided with shield and the lower shield of air-supply in the air-supply that can slide up and down, realize the function hiding wind pushing hole.The top of correspondence position is provided with return air hole on the non-homogeneous orifice plate of return air and between test environment, and the quantity often organizing return air hole is all few than the quantity of the return air hole below it; Often organize return air hole equal correspondence and to be provided with on the return air that can slide up and down shield under shield and return air, realize the function hiding return air hole.
In preferred version of the present utility model, the dividing plate be connected with building enclosure outside variable cross section air-supply static pressure is spatially located at is made up of the air-supply sloping baffle on top and the straight baffle plate of air-supply of bottom.
In preferred version of the present utility model, the width of variable cross section air-supply static pressure top of space the widest part is the 20%-25% of width between test environment, the width at the variable cross section air-supply the narrowest place of static pressure space bottom is the 15%-20% of width between test environment, straight height of baffle plate of blowing accounts for the 30%-35% of variable cross section air-supply static pressure space whole height, and between air-supply sloping baffle and building enclosure upright side walls, angle is 4 °-5 °.
In preferred version of the present utility model, dividing plate between variable cross section return air static pressure space and air processor is made up of the return air sloping baffle of the straight baffle plate of the return air on top and bottom, and the hypomere of described return air sloping baffle is provided with the return air inlet be communicated with air processor.
In preferred version of the present utility model, the width of variable cross section return air static pressure space bottom the widest part is the 20%-25% of width between test environment, the width at the narrowest place of variable cross section return air static pressure top of space is the 15%-20% of width between test environment, the straight height of baffle plate of return air should be the 30%-35% of variable cross section return air static pressure space whole height, and return air sloping baffle and vertical direction angle are 6.5 °-7.5 °.
In preferred version of the present utility model, Condensing units comprises condenser, expansion valve parallel component and parallel compressor unit, and described condenser, expansion valve parallel component, evaporator (72) and parallel compressor unit connect to form evaporative condenser closed circuit successively.
Described expansion valve parallel component is composed in parallel by three groups of expansion valves, and the refrigerant inlet of three groups of expansion valves is connected with the refrigerant outlet of condenser respectively, and the refrigerant outlet of expansion valve is connected with the refrigerant inlet of evaporator respectively.Parallel compressor unit is made up of three groups of compressor parallels, and the refrigerant inlet of three groups of compressors is connected with the refrigerant outlet of evaporator respectively, and the refrigerant outlet of compressor is connected with the refrigerant inlet of condenser respectively.
Condenser comprise connect successively condensation accumulator unit, condensing heat-exchange tube bank and condensation device for storing liquid.Condensation accumulator unit comprises in condensation gas storage the condensation gas storage outer tube managing and be enclosed within pipe outside in described condensation gas storage, space in condensation gas storage between pipe and condensation gas storage outer tube is condensation gas storage mixolimnion, in condensation gas storage, the import of upper three the condensation shunts arranged of pipe is the refrigerant inlet of condenser, three condensation shunts are corresponding with one group of compressor respectively to be connected, and the import that condensation gas storage outer tube and condensing heat-exchange are restrained is connected.Condensation device for storing liquid comprises in condensation liquid storage the condensation liquid storage outer tube managing and be enclosed within pipe outside in described condensation liquid storage, space in condensation liquid storage between pipe and condensation liquid storage outer tube is condensation liquid storage mixolimnion, in condensation liquid storage, pipe is connected with the outlet that condensing heat-exchange is restrained, three refrigerant outlets that condensation liquid storage outer tube is arranged are the refrigerant outlet of condenser, and three refrigerant outlets of condensation liquid storage outer tube are corresponding with one group of expansion valve respectively to be connected.Evaporator comprise connect successively evaporation device for storing liquid, evaporation and heat-exchange tube bank and evaporation accumulator unit.Evaporation device for storing liquid comprises the evaporation liquid storage outer tube managing and be enclosed within pipe outside in described evaporation liquid storage in evaporation liquid storage, space in evaporation liquid storage between pipe and evaporation liquid storage outer tube is for evaporate liquid storage mixolimnion, in evaporation liquid storage, the import of upper three the evaporation shunts arranged of pipe is the refrigerant inlet of evaporator, three evaporation shunts are corresponding with one group of expansion valve respectively to be connected, and evaporation liquid storage outer tube is connected with the import that evaporation and heat-exchange is restrained.Evaporation accumulator unit comprises the evaporation gas storage outer tube managing and be enclosed within pipe outside in described evaporation gas storage in evaporation gas storage, space in evaporation gas storage between pipe and evaporation gas storage outer tube is for evaporate gas storage mixolimnion, in evaporation gas storage, pipe is connected with the outlet that evaporation and heat-exchange is restrained, three refrigerant outlets that evaporation gas storage outer tube is arranged are the refrigerant outlet of evaporator, and three refrigerant outlets of evaporation gas storage outer tube are corresponding with one group of compressor respectively to be connected.
In preferred version of the present utility model, in condensation gas storage pipe tube wall on be evenly distributed with the three groups of vent port unit be communicated with gas storage static pressure layer, often organize described vent port unit and comprise three condensation exhaust apertures be arranged in order, first condensation shunt is connected with first condensation exhaust aperture in three groups of vent port unit, second condensation shunt is connected with second condensation exhaust aperture in three groups of vent port unit, 3rd condensation shunt is connected with the condensation exhaust aperture of the 3rd in three groups of vent port unit, in described condensation liquid storage pipe tube wall on be evenly distributed with the condensation discharge opeing aperture be communicated with condensation liquid storage mixolimnion.Evaporation liquid storage in pipe tube wall on be evenly distributed with the three groups of outage unit be communicated with liquid storage static pressure layer, often organize described outage unit and comprise three evaporation discharge opeing apertures be arranged in order, first evaporation shunt evaporates discharge opeing aperture with first in three groups of outage unit and is connected with evaporation shunt, second evaporation shunt evaporates discharge opeing aperture with second in three groups of outage unit and is connected, 3rd evaporation shunt evaporates discharge opeing aperture with the 3rd in three groups of outage unit and is connected, in described evaporation gas storage pipe tube wall on be evenly distributed with and the evaporation vent ports of evaporating gas storage mixolimnion and being communicated with.
In preferred version of the present utility model, evaporation liquid storage outer tube diameter is 2 ~ 2.5 with the ratio of pipe external diameter in evaporation liquid storage, and evaporation gas storage outer tube diameter is 2.5 ~ 3 with the ratio of pipe external diameter in evaporation gas storage.In condensation gas storage outer tube diameter and condensation gas storage, the ratio of pipe external diameter is 2.5 ~ 3.5, and in condensation liquid storage outer tube diameter and condensation liquid storage, the ratio of pipe external diameter is 1.5 ~ 2.5.
In preferred version of the present utility model, the ratio that between test environment, inner space is wide, high, dark is between 1:1.5:1 ~ 1:1.8:1.2, and width is 700 ~ 900mm.
The utility model changes Air Distribution, and between test environment, region place forms parallel air-supply, thus ensure that the stability of the humiture of simulated environment, improves the precision of test.
Beneficial effect: compared with existing food freezer performance test device, the utility model has the following advantages:
1. the utility model adopts the air blow and return mode of parallel air-supply and parallel return air between test environment, air-flow is made to enter between test environment with certain flow velocity from the non-homogeneous orifice plate of air-supply, air-flow is horizontal flow herein, form good air current composition, be easy to obtain stable velocity field and thermo parameters method, thus create the air velocity and humiture field that are more applicable to the requirement of food refrigerator performance test, thus the precision of test can be improved further.
2. the non-homogeneous orifice plate of air-supply of the present utility model and the non-homogeneous orifice plate of return air are respectively arranged with variable cross section air-supply static pressure space and variable cross section return air static pressure space, the air-flow entered wherein can be made to tend towards stability, effectively change the dynamic pressure of the dry gas stream carried by header pipe into static pressure, build homogeneous, stable flow conditions, ensure the air current composition condition entering test zone.The design of variable cross section can reduce air-flow pressure gap in vertical direction in static pressure space, reduce the unevenness of air-flow, the air-flow entering test zone from the non-homogeneous orifice plate of air-supply becomes horizontal flow, thus velocity field and the temperature field of stable homogeneous is obtained at test zone, thus the air current composition improved between test environment and humiture, make it to meet the requirement of JB/T7244-1994 " food refrigerator " series standard, reduce the difference of air blow and return orifice plate pressure everywhere simultaneously, thus ensure the homogeneity of blast pressure and air-supply air-flow.
3. the utility model is by evaporator, solar auxiliary heater, electrical auxiliary heater, electric damping device, the blower fan of variable frequency control and fluorescent light, temperature, humidity, flow velocity and illumination in guarantee test environment, close to true ruuning situation, improve the precision of test.
Accompanying drawing explanation
Fig. 1 is existing food freezer performance test device principle assumption diagram;
Fig. 2 is the principle assumption diagram of the utility model food refrigerator testing laboratory;
Fig. 3 is the evaporative condenser circuit theory figure that the utility model adopts.
Fig. 4 is the utility model variable cross section air-supply static pressure Space Principles structural drawing;
Fig. 5 is the utility model variable cross section return air static pressure Space Principles structural drawing;
Fig. 6 is the front elevation of the non-homogeneous orifice plate of air-supply that the utility model adopts;
Fig. 7 is the front elevation of the non-homogeneous orifice plate of return air that the utility model adopts;
Fig. 8 is the front elevation of the return air inlet that the utility model adopts.
In figure: 1-building enclosure; 2-variable cross section air-supply static pressure space; 21-blows non-homogeneous orifice plate; 211-wind pushing hole; Shield in 212-air-supply; The lower shield of 213-air-supply; 22-blows sloping baffle; 23-blows straight baffle plate; Between 3-test environment; 4-variable cross section return air static pressure space; The non-homogeneous orifice plate of 41-return air; 411-return air hole; Shield on 412-return air; Shield under 413-return air; 42-return air sloping baffle; The straight baffle plate of 43-return air; 44-return air inlet; 441-return air bar stitches; 5-air processor; 51-solar auxiliary heater; 52-electrical auxiliary heater; 53-electricity damping device; 54-variable frequency control blower fan; 6-header pipe; 7-evaporative condenser closed circuit; 71-condenser; 711-condensation accumulator unit; Pipe in 711-1-condensation gas storage; 711-2-condensation gas storage outer tube; 711-3-condensation gas storage mixolimnion; 711-4-condensation exhaust aperture; 711-5-condensation shunt; 712-condensing heat-exchange is restrained; 713-condensation device for storing liquid; Pipe in 713-1-condensation liquid storage; 713-2 condensation liquid storage outer tube; 713-3 condensation liquid storage mixolimnion; 713-4-condensation discharge opeing aperture; 72-evaporator; 721-evaporates accumulator unit; 721-1-evaporates pipe in gas storage; 721-2-evaporates gas storage outer tube; 721-3-evaporates gas storage mixolimnion; 721-4-evaporates vent ports; 721-5-evaporates shunt; 722-evaporation and heat-exchange is restrained; 723-evaporates device for storing liquid; 723-1-evaporates pipe in liquid storage; 723-2 evaporates liquid storage outer tube; 723-3 evaporates liquid storage mixolimnion; 723-4-evaporates discharge opeing aperture; 73-expansion valve; 74-compressor; 8-fluorescent light.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Food refrigerator testing laboratory of the present utility model, comprise building enclosure 1, variable cross section air-supply static pressure space 2, between test environment 3, variable cross section return air static pressure space 4, air processor 5 and header pipe 6.Header pipe 6 is arranged on building enclosure 1 top, blown non-homogeneous orifice plate 21 and the non-homogeneous orifice plate 41 of return air of substructure is divided into three parts, variable cross section air-supply static pressure space 2 is followed successively by along airflow direction, between test environment 3 and variable cross section return air static pressure space 4, distinguished by the non-homogeneous orifice plate 21 of air-supply between 3 between variable cross section air-supply static pressure space 2 and test environment, distinguished by the non-homogeneous orifice plate 41 of return air between 3 and variable cross section return air static pressure space 4 between test environment, air processor 5 is arranged on building enclosure 1 right part, be positioned at outside variable cross section return air static pressure space 4, centre has dividing plate to separate, be communicated with variable cross section return air static pressure space 4 by the return air inlet 44 being arranged on the lower partition, be communicated with by header pipe 6 and variable cross section static pressure space 2 of blowing, the blower fan 54 that variable ratio frequency changer controls is installed in air processor 5 and header pipe 6 junction.
3 to be communicated with between test environment by the non-homogeneous orifice plate 21 of air-supply on the right side of variable cross section described in the utility model air-supply static pressure space 2, blow non-homogeneous orifice plate 21 in the perforate of test surfaces place, when wind pushing hole 211 diameter is certain, the quantity often organizing wind pushing hole 211 is all few than the quantity of group wind pushing hole of above it 211, above every layer of wind pushing hole 211 and below correspondence to be provided with in air-supply shield 213 under shield 212 and air-supply, shield 212 and the correspondence position of shield 213 under air-supply have groove in the air-supply of air-supply non-homogeneous orifice plate 21, shield 212 and the lower shield 213 of air-supply in air-supply can be made to slide up and down on the non-homogeneous orifice plate 21 of air-supply, realize the function hiding wind pushing hole 211, variable cross section air-supply has variable cross section space in static pressure space 2, the dividing plate be connected with building enclosure 1 outside being positioned at is made up of the air-supply sloping baffle 22 on top and the straight baffle plate 23 of the air-supply of bottom, build variable cross section air-supply static pressure space 2, the upper end of air-supply sloping baffle 22 is connected with building enclosure 1 side plate, and with header pipe 6 lower edge horizontal alignment, lower end is connected with the upper end of the straight baffle plate 23 of air-supply, straight baffle plate 23 lower end of blowing is connected with building enclosure 1 base plate.
Variable cross section return air static pressure space described in the utility model 4 and variable cross section are blown static pressure space 2 similar, variable cross section return air static pressure space 4 passes on left the non-homogeneous orifice plate 41 of return air and 3 to be communicated with between test environment, the non-homogeneous orifice plate 41 of return air is in the perforate of test surfaces place, when return air hole 411 diameter is certain, the quantity often organizing return air hole 411 is all few than the quantity of group return air hole of below it 411, above every layer of return air hole 411 and below correspondence to be provided with on return air shield 413 under shield 412 and return air, on the return air of the non-homogeneous orifice plate 41 of return air under shield 412 and return air shield 413 correspondence position on have groove, shield 413 under shield 412 and return air can be made on return air to slide up and down on the non-homogeneous orifice plate 41 of return air, realize the function hiding return air hole 411, variable cross section space is had in variable cross section return air static pressure space 4, dividing plate between variable cross section return air static pressure space 4 and air processor 5 is made up of the return air sloping baffle 42 of the straight baffle plate 43 of the return air on top and bottom, build variable cross section return air static pressure space 4, return air straight baffle plate 43 upper end is connected with header pipe 6 lower edge, lower end is connected with return air sloping baffle 42 upper end, return air sloping baffle 42 lower end is connected on the dividing plate that separates with air processor 5, and align with return air inlet 44 upper edge.
The blower fan 54 of the evaporator 72 that air-treatment unit 5 is set gradually by the direction of flowing along air, solar auxiliary heater 51, electrical auxiliary heater 52, electric damping device 53, variable frequency control forms.Evaporator 72 and condensate pans pipeline section form whole circulation, and evaporator is located at device inside, play the effect of cooling humidity reduction, and condensate pans pipeline section are located at device outside, comprise condenser 71, expansion valve parallel component, compressor parallel assembly.Described evaporator 72 comprise connect successively evaporation device for storing liquid 721, evaporation and heat-exchange tube bank 722 and evaporation accumulator unit 723.Evaporation device for storing liquid 721 comprises pipe 721-1 and the evaporation liquid storage outer tube 721-2 being enclosed within pipe 721-1 outside in described evaporation liquid storage in evaporation liquid storage, space in evaporation liquid storage between pipe 721-1 and evaporation liquid storage outer tube 721-2 is for evaporate liquid storage mixolimnion 721-3, three the evaporation shunt 721-5 import in evaporation liquid storage, pipe 721-1 arranged is the refrigerant inlet of evaporator 72, the import of three evaporation shunt 721-5 is corresponding with one group of expansion valve 73 respectively to be connected, and evaporation liquid storage outer tube 721-2 is connected with the import that evaporation and heat-exchange restrains 722.
Evaporation accumulator unit 723 comprises pipe 723-1 and the evaporation gas storage outer tube 723-2 being enclosed within pipe 723-1 outside in described evaporation gas storage in evaporation gas storage, space in evaporation gas storage between pipe 723-1 and evaporation gas storage outer tube 723-2 is for evaporate gas storage mixolimnion 723-3, in evaporation gas storage, pipe 723-1 is connected with the outlet that evaporation and heat-exchange restrains 722, upper three refrigerant outlets arranged of evaporation gas storage outer tube 723-2 are the refrigerant outlet of evaporator 72, and three refrigerant outlets evaporating gas storage outer tube 723-2 are corresponding with one group of compressor 74 respectively to be connected.Evaporation liquid storage in pipe 721-1 tube wall on be evenly distributed with the three groups of outage unit be communicated with liquid storage static pressure layer 721-3, often organize described outage unit and comprise three evaporation discharge opeing aperture 721-4 be arranged in order, first evaporation shunt 721-5 evaporates discharge opeing aperture 711-4 with first in three groups of outage unit and is connected with evaporation shunt, second evaporation shunt 711-5 evaporates discharge opeing aperture 721-4 with second in three groups of outage unit and is connected, 3rd evaporation shunt 721-5 evaporates discharge opeing aperture 721-4 with the 3rd in three groups of outage unit and is connected, in described evaporation gas storage pipe 723-1 tube wall on be evenly distributed with and the evaporation vent ports 723-4 evaporating gas storage mixolimnion 723-3 and be communicated with.
Described expansion valve parallel component is composed in parallel by three groups of expansion valves 73, the refrigerant inlet of three groups of expansion valves 73 is connected with the refrigerant outlet of condenser 71 respectively, the refrigerant outlet of expansion valve 74 is connected with the refrigerant inlet of evaporator 72 respectively, described parallel compressor unit is composed in parallel by three groups of compressors 74, the refrigerant inlet of three groups of compressors 74 is connected with the refrigerant outlet of evaporator 72 respectively, and the refrigerant outlet of compressor 74 is connected with the refrigerant inlet of condenser 71 respectively.
Condenser 71 comprise connect successively condensation accumulator unit 711, condensing heat-exchange tube bank 712 and condensation device for storing liquid 713.Condensation accumulator unit 711 comprises pipe 711-1 and the condensation gas storage outer tube 711-2 being enclosed within pipe 711-1 outside in described condensation gas storage in condensation gas storage, space in condensation gas storage between pipe 711-1 and condensation gas storage outer tube 711-2 is condensation gas storage mixolimnion 711-3, three the condensation shunt 711-5 import in condensation gas storage, pipe 711-1 arranged is the refrigerant inlet of condenser 71, three condensation shunt 711-5 are corresponding with one group of compressor 74 respectively to be connected, and condensation gas storage outer tube 711-2 is connected with the import that condensing heat-exchange restrains 712.
Condensation device for storing liquid 713 comprises pipe 713-1 and the condensation liquid storage outer tube 713-2 being enclosed within pipe 713-1 outside in described condensation liquid storage in condensation liquid storage, space in condensation liquid storage between pipe 713-1 and condensation liquid storage outer tube 713-2 is condensation liquid storage mixolimnion 713-3, the outlet that in condensation liquid storage, pipe 713-1 and condensing heat-exchange restrain 712 is connected, three refrigerant outlets that condensation liquid storage outer tube 713-2 is arranged are the refrigerant outlet of condenser 71, and three refrigerant outlets of condensation liquid storage outer tube 713-2 are corresponding with one group of expansion valve 73 respectively to be connected.In condensation gas storage pipe 711-1 tube wall on be evenly distributed with the three groups of vent port unit be communicated with gas storage static pressure layer 711-3, often organize described vent port unit and comprise three condensation exhaust aperture 711-4 be arranged in order, first condensation shunt 711-5 is connected with first condensation exhaust aperture 711-4 in three groups of vent port unit, second condensation shunt 711-5 is connected with second condensation exhaust aperture 711-4 in three groups of vent port unit, 3rd condensation shunt 711-5 is connected with the condensation exhaust aperture 711-4 of the 3rd in three groups of vent port unit, in described condensation liquid storage pipe 713-1 tube wall on be evenly distributed with the condensation discharge opeing aperture 713-4 be communicated with condensation liquid storage mixolimnion 713-3.
Variable cross section air-supply static pressure space 2 is disposed with along air-flow direction in the utility model, between test environment 3, variable cross section return air static pressure space 4, air sends into variable cross section air-supply static pressure space 2 by header pipe 6, air-flow changes static pressure into by dynamic pressure in this variable cross section supply air duct, 3 are entered between test environment by the wind pushing hole 211 of blowing on non-homogeneous orifice plate 21, air processor 5 is entered subsequently by return air inlet 44, successively by evaporator 72, solar auxiliary heater 51, electrical auxiliary heater 52 and electric damping device 53, dehumidification is carried out to air, heating, the process such as humidification, be provided with fluorescent light 8 to ensure suitable illumination, finally flowed out by air processor 5 top, blower fan 54 through variable frequency control pressurizes, enter header pipe 6, formed and once circulate.
In the utility model, according to JB/T7244-1994 " food refrigerator " related request, 3 are made between test environment to be in suitable temperature, humidity, illumination and wind speed etc.
Wherein, when reaching the requirement of following humiture between test environment, food refrigerator can normally work
In test environment, the thermograde of vertical direction is no more than 2 DEG C/m, and the difference of temperature between test environment between top-to-bottom should not be greater than 6 DEG C.
What this food freezer performance test device was taked is parallel air supply mode, therefore meets JB/T7244-1994 " food refrigerator " related request, and by the air-treatment group blower fan of variable frequency control by the blast velocity control between test environment at 0.2 ± 0.1m/s.
The fluorescent light that illumination is equivalent to 600 ± 100lx is set at 1m place, bottom between test environment, and ensures to continue illumination at duration of test.
In the utility model, to the requirement of the illumination between test environment, temperature, humidity and wind speed, fluorescent light 8 can be passed through, the blower fan 54 of the evaporator 72 in air processor, solar auxiliary heater 51, electrical auxiliary heater 52, electric damping device 53, variable frequency control ensures, improves the accuracy of Reality simulation environment thus.
Below be only the introduction explanation to the utility model specific embodiment; in order to technical solutions of the utility model to be described; but protection domain of the present utility model is not limited in above embodiment; as long as person skilled carries out equivalent replacement or improvement to technical characteristic, the technical scheme formed all falls into the utility model protection domain.
Claims (9)
1. a food refrigerator testing laboratory, it is characterized in that, comprise building enclosure (1), be arranged on described building enclosure (1) Condensing units outward, be arranged on variable cross section air-supply static pressure space (2) in building enclosure (1), between test environment (3), variable cross section return air static pressure space (4), air processor (5) and header pipe (6), described header pipe (6) is positioned at building enclosure (1) top, the compartition of header pipe (6) below is variable cross section air-supply static pressure space (2) set gradually along airflow direction by the non-homogeneous orifice plate of air-supply (21) of vertical setting and the non-homogeneous orifice plate of return air (41), (3) and variable cross section return air static pressure space (4) between test environment, described air processor (5) is arranged on outside, variable cross section return air static pressure space (4), air processor (5) is communicated with by header pipe (6) and variable cross section static pressure space (2) of blowing, described variable cross section air-supply static pressure space (2) is greater than lower section width for top cross-sectional width, and variable cross section return air static pressure space (4) is less than lower section width for top cross-sectional width,
The evaporator (72) that described air processor (5) is set gradually by the direction of flowing along air, solar auxiliary heater (51), electrical auxiliary heater (52), electric damping device (53) and variable frequency control blower fan (54) form, described evaporator (72) is connected with Condensing units, composition evaporative condenser closed circuit (7);
On the non-homogeneous orifice plate of described air-supply (21), interval arranges and organizes wind pushing hole (211) more from top to bottom, and the quantity often organizing wind pushing hole (211) is all few than the quantity of group wind pushing hole of above it (211); Often organize wind pushing hole (211) all correspondence be provided with shield (212) and the lower shield (213) of air-supply in the air-supply that can slide up and down, realize the function of covering wind pushing hole (211);
The non-homogeneous orifice plate of return air (41) is gone up and between test environment, the top of (3) correspondence position is provided with return air hole (411), and the quantity often organizing return air hole (411) is all few than the quantity of group return air hole of below it (411); Often organize return air hole (411) all correspondence to be provided with on the return air that can slide up and down shield (413) under shield (412) and return air, realize the function of covering return air hole (411).
2. a kind of food refrigerator testing laboratory according to claim 1, it is characterized in that, the dividing plate be connected with building enclosure (1) outside described variable cross section air-supply static pressure space (2) is positioned at is made up of the air-supply sloping baffle (22) on top and the straight baffle plate of air-supply (23) of bottom.
3. a kind of food refrigerator testing laboratory according to claim 2, it is characterized in that, the width of described variable cross section air-supply static pressure space (2) top the widest part is the 20%-25% of (3) width between test environment, the width at the narrowest place, variable cross section air-supply static pressure space (2) bottom is the 15%-20% of (3) width between test environment, the height of straight baffle plate (23) of blowing accounts for the 30%-35% of variable cross section air-supply static pressure space (2) whole height, and between air-supply sloping baffle (22) and building enclosure upright side walls, angle is 4 °-5 °.
4. a kind of food refrigerator testing laboratory according to claim 1, it is characterized in that, dividing plate between described variable cross section return air static pressure space (4) and air processor (5) is made up of the return air sloping baffle (42) of the straight baffle plate of the return air on top (43) and bottom, and the hypomere of described return air sloping baffle (42) is provided with the return air inlet (44) be communicated with air processor (5).
5. a kind of food refrigerator testing laboratory according to claim 4, it is characterized in that, the width of described variable cross section return air static pressure space (4) bottom the widest part is the 20%-25% of (3) width between test environment, the width at variable cross section return air static pressure space (4) the narrowest place, top is the 15%-20% of (3) width between test environment, the straight baffle plate of return air (43) highly accounts for the 30%-35% of variable cross section return air static pressure space (4) whole height, and return air sloping baffle (42) and vertical direction angle are 6.5 °-7.5 °.
6. a kind of food refrigerator testing laboratory according to claim 1,2,3,4 or 5, it is characterized in that, described Condensing units comprises condenser (71), expansion valve parallel component and parallel compressor unit, and described condenser (71), expansion valve parallel component, evaporator (72) and parallel compressor unit connect to form evaporative condenser closed circuit (7) successively;
Described expansion valve parallel component is composed in parallel by three groups of expansion valves (73), the refrigerant inlet of three groups of expansion valves (73) is connected with the refrigerant outlet of condenser (71) respectively, the refrigerant outlet of expansion valve (73) is connected with the refrigerant inlet of evaporator (72) respectively, described parallel compressor unit is composed in parallel by three groups of compressors (74), the refrigerant inlet of three groups of compressors (74) is connected with the refrigerant outlet of evaporator (72) respectively, the refrigerant outlet of compressor (74) is connected with the refrigerant inlet of condenser (71) respectively,
Described condenser (71) comprise connect successively condensation accumulator unit (711), condensing heat-exchange tube bank (712) and condensation device for storing liquid (713);
Described condensation accumulator unit (711) comprises in condensation gas storage to be managed (711-1) and is enclosed within condensation gas storage outer tube (711-2) that in described condensation gas storage, pipe (711-1) is outside, space in condensation gas storage between pipe (711-1) and condensation gas storage outer tube (711-2) is condensation gas storage mixolimnion (711-3), in condensation gas storage, the import of upper three the condensation shunts (711-5) arranged of pipe (711-1) is the refrigerant inlet of condenser (71), three condensation shunts (711-5) are corresponding with one group of compressor (74) respectively to be connected, condensation gas storage outer tube (711-2) restrains (712) import with condensing heat-exchange is connected,
Condensation device for storing liquid (713) comprises in condensation liquid storage manages (713-1) and is enclosed within condensation liquid storage outer tube (713-2) that in described condensation liquid storage, pipe (713-1) is outside, space in condensation liquid storage between pipe (713-1) and condensation liquid storage outer tube (713-2) is condensation liquid storage mixolimnion (713-3), the interior pipe (713-1) of condensation liquid storage restrains (712) outlet with condensing heat-exchange is connected, upper three refrigerant outlets arranged of condensation liquid storage outer tube (713-2) are the refrigerant outlet of condenser (71), three refrigerant outlets of condensation liquid storage outer tube (713-2) are corresponding with one group of expansion valve (73) respectively to be connected,
Described evaporator (72) comprise connect successively evaporation device for storing liquid (721), evaporation and heat-exchange tube bank (722) and evaporate accumulator unit (723);
Described evaporation device for storing liquid (721) comprises in evaporation liquid storage to be managed (721-1) and is enclosed within evaporation liquid storage outer tube (721-2) that in described evaporation liquid storage, pipe (721-1) is outside, space in evaporation liquid storage between pipe (721-1) and evaporation liquid storage outer tube (721-2) is for evaporate liquid storage mixolimnion (721-3), in evaporation liquid storage, the import of upper three the evaporation shunts (721-5) arranged of pipe (721-1) is the refrigerant inlet of evaporator (72), three evaporation shunts (721-5) are corresponding with one group of expansion valve (73) respectively to be connected, (722) are restrained in evaporation liquid storage outer tube (721-2) import with evaporation and heat-exchange is connected,
Evaporation accumulator unit (723) comprises in evaporation gas storage manages (723-1) and is enclosed within the evaporation gas storage outer tube (723-2) that in described evaporation gas storage, pipe (723-1) is outside, space in evaporation gas storage between pipe (723-1) and evaporation gas storage outer tube (723-2) is for evaporate gas storage mixolimnion (723-3), the interior pipe (723-1) of evaporation gas storage restrains (722) outlet with evaporation and heat-exchange is connected, upper three refrigerant outlets arranged of evaporation gas storage outer tube (723-2) are the refrigerant outlet of evaporator (72), three refrigerant outlets of evaporation gas storage outer tube (723-2) are corresponding with one group of compressor (74) respectively to be connected.
7. a kind of food refrigerator testing laboratory according to claim 6, it is characterized in that, the tube wall of the interior pipe (711-1) of described condensation gas storage is evenly distributed with the three groups of vent port unit be communicated with gas storage static pressure layer (711-3), often organize described vent port unit and comprise three condensation exhaust apertures (711-4) be arranged in order, first condensation shunt (711-5) is connected with first condensation exhaust aperture (711-4) in three groups of vent port unit, second condensation shunt (711-5) is connected with second condensation exhaust aperture (711-4) in three groups of vent port unit, 3rd condensation shunt (711-5) is connected with the condensation exhaust aperture (711-4) of the 3rd in three groups of vent port unit, the tube wall of the interior pipe (713-1) of described condensation liquid storage is evenly distributed with the condensation discharge opeing aperture (713-4) be communicated with condensation liquid storage mixolimnion (713-3),
The tube wall of the interior pipe (721-1) of described evaporation liquid storage is evenly distributed with the three groups of outage unit be communicated with liquid storage static pressure layer (721-3), often organize described outage unit and comprise three evaporation discharge opeing apertures (721-4) be arranged in order, first evaporation shunt (721-5) is evaporated discharge opeing aperture (711-4) with first in three groups of outage unit and is connected, second evaporation shunt (711-5) is evaporated discharge opeing aperture (721-4) with second in three groups of outage unit and is connected, 3rd evaporation shunt (721-5) is evaporated discharge opeing aperture (721-4) with the 3rd in three groups of outage unit and is connected, in described evaporation gas storage pipe (723-1) tube wall on be evenly distributed with and the evaporation vent ports (723-4) of evaporating gas storage mixolimnion (723-3) and being communicated with.
8. a kind of food refrigerator testing laboratory according to claim 6, it is characterized in that, described evaporation liquid storage outer tube (721-2) internal diameter is 2 ~ 2.5 with the interior ratio of managing (721-1) external diameter of evaporation liquid storage, and described evaporation gas storage outer tube (723-2) internal diameter is 2.5 ~ 3 with evaporating the ratio of managing (723-1) external diameter in gas storage;
Described condensation gas storage outer tube (711-2) internal diameter and the interior ratio of managing (711-1) external diameter of condensation gas storage are 2.5 ~ 3.5, and described condensation liquid storage outer tube (713-2) internal diameter and the interior ratio of managing (713-1) external diameter of condensation liquid storage are 1.5 ~ 2.5.
9. a kind of food refrigerator testing laboratory according to claim 1,2,3,4 or 5, it is characterized in that, the ratio that between described test environment, (3) inner space is wide, high, dark is between 1:1.5:1 ~ 1:1.8:1.2, and between test environment, (3) inner width is 700 ~ 900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520482423.1U CN204789005U (en) | 2015-07-06 | 2015-07-06 | Food freezer laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520482423.1U CN204789005U (en) | 2015-07-06 | 2015-07-06 | Food freezer laboratory |
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| Publication Number | Publication Date |
|---|---|
| CN204789005U true CN204789005U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520482423.1U Withdrawn - After Issue CN204789005U (en) | 2015-07-06 | 2015-07-06 | Food freezer laboratory |
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| CN (1) | CN204789005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021415A (en) * | 2015-07-06 | 2015-11-04 | 南京师范大学 | Device of parallel air supply type for testing performance of foodstuff refrigerator |
| CN109000852A (en) * | 2018-09-25 | 2018-12-14 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet leak detection room |
-
2015
- 2015-07-06 CN CN201520482423.1U patent/CN204789005U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021415A (en) * | 2015-07-06 | 2015-11-04 | 南京师范大学 | Device of parallel air supply type for testing performance of foodstuff refrigerator |
| CN105021415B (en) * | 2015-07-06 | 2017-09-15 | 江苏北洋冷链设备科技有限公司 | A kind of parallel blowing-type food freezer performance test device |
| CN109000852A (en) * | 2018-09-25 | 2018-12-14 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet leak detection room |
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