A kind of circulation air path of air-cooled Medical refrigeratorTechnical field
The utility model belongs to refrigerating box technical field more particularly to a kind of circulation air path of air-cooled Medical refrigerator.
Background technique
Medical refrigerator mainly stores drug, reagent or the vaccine for having strict demand to storage temperature, and temperature-control range is 2~8 DEG C, the temperature inside the box uniformity is less than 2 DEG C, and fluctuation is less than 3 DEG C.
The circulation air path of Medical refrigerator is different because of refrigeration modes difference.Refrigeration modes can be divided into direct-cooled and two kinds air-cooledMode.
Direct-cooled mode obtains cooling capacity by plate-type evaporator (Fig. 2) in foaming layer built-in evaporator (Fig. 1) or case, by coldBuilt-in fans carry out weak air quantity circulation in air sinking self-loopa or case, simple without special air duct or air duct；Direct-cooled mode (figure1, Fig. 2) disadvantage is mainly that fan is very weak to the transmitting of cooling capacity, and the temperature inside the box uniformity is poor, the temperature fluctuation period is big and fluctuation widthDegree is big, and easily on the outside of the corresponding liner of foaming layer evaporator or plate-type evaporator surface generates frost accumulated or icing, needs to go by handIt removes.Temperature uniformity and fluctuation are also poor, influence user's use feeling, influence the storage quality of article.Although some products existIncrease a Simple fan structure on direct-cooled mode, but air circulation speed in case can not be improved, frosting or product can not be solvedIce problem.
Air cooling way is to obtain cooling capacity by case inner fin type evaporator, carries out Wind Volume circulation by the fan adjoined,There is specific Duct design requirement, such as " a kind of circulation air path of air cooling type refrigerator " (200610072064.8).Air cooling way pairThe transmitting of cooling capacity is stronger, and the temperature inside the box uniformity is good, period of waves is small and fluctuating range is small, is directly recycled by wind and passes cooling capacityThe all angles of case are delivered to, design rationally will not frost accumulated or icing.Application No. is: 200610072064.8 disclose it is a kind of air-cooledThe circulation air path of formula refrigerator, this application use full blast SAPMAC method air duct, but in the program fan from evaporator air draught, outlet air sideTo box back surface is directed toward, the cooling capacity for taking away evaporator is relatively small, easily leads to evaporator icing and recycles so that blocking wind, temperature in caseIt spends uniformity and fluctuation is larger, temperature control level is weak；It is this to absorb cooling capacity from evaporator by air draught mode, also result in fan electricityMachine icing effect rotating operation, high failure rate；Air outlet is single, and each point temperature uniformity and fluctuation are poor in case, cannot reachAssigned temperature；This patent does not illustrate influence of the variation of air duct bore to circulation wind speed and temperature uniformity.
Utility model content
A kind of air-cooled Medical refrigerator that the purpose of this utility model is in view of the deficiencies of the prior art and provides followsRing air duct.
To achieve the goals above, technical solution adopted in the utility model is:
A kind of circulation air path of air-cooled Medical refrigerator, the refrigerating box are to store in door body and the case of case liner formationGas in space provides gas and recycles and transmit the device of cooling capacity, and cooling capacity is kept the temperature by foaming layer in case, generation it is a small amount ofPonding is discharged by drainpipe.
Circulation air path component includes refrigeration fan housing, fan, evaporator fin, air duct board, case liner.
The support for thering is air inlet, two sides to have 4 top-side air outlets, turbulent flow plate and evaporator fin on refrigeration fan housingBlock.Air inlet of the air inlet of fan toward and proximate to refrigeration fan housing.Height and the width and fin at the top of inner cover are refrigerated to evaporateDevice is suitable, guarantees that air-flow sufficiently flows through evaporator, plays good heat exchange action, improves heat exchanger effectiveness, avoids heat exchangeDead angle prevents frost accumulated and risk of icing.The preferred aerofoil fan of fan.
About 5 ~ 10 mm of spacing of fin, fin are parallel to airflow direction on evaporator fin, play air-flow guiding role, allowAir comes into full contact with the metal cooling tube perpendicular to fin and transmits heat.
Air duct board is furnished with intermediate front-outlet mouth and medial side face air outlet, position and quantity according to tank-volumes and heightIt is adjusted, considers that cold air sinks, general top is more, and bottom is less.
Case liner has a wind direction adjustment block at the bottom air outlet of air duct board, for changing the flow direction of wind.
Fan and evaporator fin are fixed on the refrigeration fan housing of necking type and form assembling assembly, this assembling assembly is fixed onThe top of case liner.Wind pressure storehouse is formed in refrigeration fan housing, case liner and evaporator fin front end when fan work.Air duct board with it is coldThe necking of hiding fan housing is connected, and is fixed on the back of case liner, forms air duct and bottom air outlet.The air duct is set to storageSpace wall is connected between air duct and refrigeration fan housing,
When Medical refrigerator works, fan and evaporator fin are worked at the same time, and fan is the air in case memory spaceCirculation provides power, and evaporator fin provides cooling capacity and is transmitted in the air on periphery.
Cooling capacity and released cold quantity are constantly absorbed in gas flow.Fan running, air inlet form negative pressure, storage in caseAir starts to flow in space, and positive pressure, refrigeration piping of the air-flow of positive pressure along fin, with evaporator fin are formed in wind pressure storehouseHeat exchange is sufficiently carried out, gas absorbs cooling capacity, temperature decline.When cold gas flow liner top corner, turbulence, temperature occursBecome uniform.Air-flow encounters the bottom necking of refrigeration fan housing, and gas flow rate becomes larger, and flows to turbulent flow plate, keeps turbulence-like in air ductState is flowed out by the air port of top, middle part and bottom, and the air-flow turbulent fluctuation of agitation box memory space, forms more equal perseveranceTemperature, and released cold quantity pass to the article of storage.After gas released cold quantity, the heat of article is absorbed, is again introduced into air inletThe negative pressuren zone of mouth constantly recycles.
In order to form closed type encircling type air-flow, the layout of air outlet has the temperature inside the box and its uniformity and fluctuationGreat influence.The top-side air outlet for refrigerating fan housing two sides, can not only guarantee that there is sufficient air on evaporator fin both sidesFlowing also can transmit cooling capacity for the headspace of case memory space.The intermediate front-outlet mouth of air duct board is that storage is empty in caseBetween front gas transmit cooling capacity, medial side face air outlet is that the two sides air of case memory space transmits cooling capacity, and outlet at bottom isBottom air transmits cooling capacity.
Fan is in always in the maximum temperature gas of case memory space, 2 ~ 8 degree, will not be frozen, be kept good workMake state.
Medical refrigerator the temperature inside the box sensor controls compressor start-stop, intermittent offer cooling capacity.Under normal conditions, it is more thanAt 6.5 DEG C of setting value, work refrigeration, when being lower than 3.5 DEG C, shutdown is not freezed.And the working condition of fan is continuous uninterrupted's.Into the steam containing humidity in the gas in wind pressure storehouse, steam encounters refrigeration piping cold in evaporator fin, will formThe frost at water droplet or initial stage.After the gas compression in wind pressure storehouse, temperature is increased, and when flowing through evaporator fin, is not only absorbedCooling capacity is discharged heat, can also melt frost, after finally being flowed down in a manner of water droplet, flow to outside case through drainpipe.
In the utility model, evaporator uses evaporator fin, and is integrally placed in circulation air path, and air-flow directly connects with itTouching, fan air-out direction are directed toward evaporator fin, and air duct uses inverted L shape necking type air duct, arrange turbulence structure, increase different heightIt spends, the air port in direction and quantity, not only contributes to improve wind speed, be more advantageous to the agitation speed for improving air-flow and cooling capacity transmitting waterFlat, the quantity arrangement in each air port also should be by actually detected.When turbulence structure changes angle (0-45 °), windage is advantageously reduced,Also air stream turbulence degree can be improved, necking section and turbulence structure size should be weighed in specific design and determine.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of background technique；
Fig. 2 is the structural schematic diagram of background technique；
Fig. 3 is the air duct side structure schematic diagram of the utility model；
Fig. 4 is the air duct positive structure schematic of the utility model.
Specific embodiment
The utility model is described further below with reference to embodiment.
The air-cooled Medical refrigerator circulation air path of a kind of inverted L necking type as shown in Figure 3 and Figure 4.Pass through air inlet, windFan, evaporator, duct outlet location layout solve fan blower, evaporator ice formation issues；It is mentioned by the diminution of air duct boreHigh air circulation speed and vortex are horizontal；Pass through more scenery resource qualities, it is ensured that temperature uniformity and fluctuation meet in big volume boxIt is expected that.Ensure that Medical refrigerator storage temperature is 2~8 DEG C with upper type, for the temperature inside the box uniformity less than 2 DEG C, fluctuation is smallIn 3 DEG C.
A kind of air-cooled Medical refrigerator circulation air path of inverted L necking type is for the case memory of door body 13 and the formation of case liner 9Gas in storage space 1 provides gas and recycles and transmit the device of cooling capacity, and cooling capacity is kept the temperature by foaming layer 12 in case, generationA small amount of ponding is discharged by drainpipe 11, and specific shape is shown in Fig. 3 and Fig. 4.
Circulation air path component includes refrigeration fan housing 14, fan motor 3, evaporator fin 6c, air duct board 7, case liner 9 etc..
There are air inlet 2, two sides to have 4 top-side air outlet 15a, turbulent flow plate 16 and evaporator fin on refrigeration fan housing 14The supporting block of 6c.The height and the width refrigerated at the top of inner cover are suitable with evaporator fin 6c, guarantee that air-flow sufficiently flows through evaporator,Good heat exchange action is played, heat exchanger effectiveness is improved, avoids heat exchange dead angle, prevent frost accumulated and risk of icing.
The preferred aerofoil fan of fan motor 3.
About 5 ~ 10 mm of spacing of fin, fin are parallel to airflow direction on evaporator fin 6c, play air-flow guiding role,It allows air to come into full contact with the metal cooling tube perpendicular to fin and transmits heat.
Air duct board 7 is furnished with intermediate front-outlet mouth 15b and medial side face air outlet 15c, and position and quantity are held according to cabinetProduct and height are adjusted, and consider that cold air sinks, and general top is more, and bottom is less.
Case liner 9 has a wind direction adjustment boss 17 at the bottom air outlet 15d of air duct board 7, for changing the flow direction of wind.
Fan motor 3 and evaporator fin 6c are fixed on the refrigeration fan housing 14 of necking type and form assembling assembly, this assemblyComponent is fixed on the top of case liner 9.When fan motor 3 works before refrigeration fan housing 14, case liner 9 and evaporator fin 6cEnd forms wind pressure storehouse 4.Air duct board 7 is connected with the necking of refrigeration fan housing 14, is fixed on the back of case liner 9, forms 8 He of air ductBottom air outlet 15d.
When Medical refrigerator works, fan motor 3 and evaporator fin 6c are worked at the same time, and fan motor 3 is storage in caseAir circulation in space 1 provides power, and evaporator fin 6c provides cooling capacity and is transmitted in the air on periphery.
Cooling capacity and released cold quantity are constantly absorbed in gas flow.Fan motor 3 operates, and air inlet 2 forms negative pressure, caseAir starts to flow in memory space 1, positive pressure is formed in wind pressure storehouse 4, the air-flow of positive pressure is along fin, with evaporator fin 6cRefrigeration piping sufficiently carry out heat exchange, gas absorbs cooling capacity, temperature decline.When cold gas flow liner top corner, hairRaw turbulence, temperature become uniform.Air-flow encounters the bottom necking of refrigeration fan housing 14, and gas flow rate becomes larger, and turbulent flow plate is flowed to, in windRoad 8 keeps turbulence state, is flowed out by the air port of top, middle part and bottom, and the air-flow turbulent fluctuation of agitation box memory space 1,More permanent temperature, and released cold quantity are formed, the article of storage is passed to.After gas released cold quantity, the heat of article is absorbedAmount, is again introduced into the negative pressuren zone of air inlet, constantly recycles.
In order to form closed type encircling type air-flow, the layout of air outlet has the temperature inside the box and its uniformity and fluctuationGreat influence.The top-side air outlet 15a for refrigerating 14 two sides of fan housing, can not only guarantee that the both sides evaporator fin 6c have sufficientlyAir flowing, also can for case memory space 1 headspace transmit cooling capacity.The intermediate front-outlet mouth 15b of air duct board 7 is1 front gas of case memory space transmits cooling capacity, and medial side face air outlet 15c is that the two sides air of case memory space 1 transmitsCooling capacity, outlet at bottom 15d are that bottom air transmits cooling capacity.
Fan motor 3 in the maximum temperature gas in case memory space 1,2 ~ 8 degree, will not freeze always, keep goodGood working condition.
Medical refrigerator the temperature inside the box sensor controls compressor start-stop, intermittent offer cooling capacity.Under normal conditions, it is more thanAt 6.5 DEG C of setting value, work refrigeration, when being lower than 3.5 DEG C, shutdown is not freezed.And the working condition of fan motor 3 be it is continuous notIt is intermittent.Into the steam containing humidity in the gas in wind pressure storehouse 4, steam encounters refrigerator pipes cold in evaporator fin 6cRoad will form the frost at water droplet or initial stage.After the gas compression in wind pressure storehouse 4, temperature is increased, and flows through evaporator fin 6cWhen, cooling capacity is not only absorbed, heat is discharged, can also melt frost, after finally flowing down in a manner of water droplet, flow to case through drainpipe 11Outside.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current rowThe technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodimentsOnly illustrate the principles of the present invention, it is on the premise of not departing from the spirit and scope of the utility model, in the art commonSimply changing and replacing for technical staff be all within the protection scope of the utility model.