CN101137877A - Coolers with defrost and refrigerators with coolers with defrost - Google Patents
Coolers with defrost and refrigerators with coolers with defrostDownload PDFInfo
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- CN101137877A CN101137877ACNA2006800076593ACN200680007659ACN101137877ACN 101137877 ACN101137877 ACN 101137877ACN A2006800076593 ACNA2006800076593 ACN A2006800076593ACN 200680007659 ACN200680007659 ACN 200680007659ACN 101137877 ACN101137877 ACN 101137877A
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- glass tube
- cooler
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- bending part
- breach
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Abstract
Translated fromChinese
Description
Technical field
The present invention relates to the cooler in refrigerator etc. and have the refrigerator of this cooler with defroster.
Background technology
Cooler in the past refrigerator describes.Figure 10 is the cutaway view of the major part of refrigerator in the past.In Figure 10, refrigerator is provided with refrigeratingchamber 1 at foot, be provided with refrigeratingchamber door 2 in the front of refrigeratingchamber 1, above refrigeratingchamber 1, be provided with refrigeratingchamber 3A, be provided with refrigerating-chamber door 4 in the front of refrigeratingchamber 3A, rear, bottom in refrigerator body is provided with cooler 5, cooler 5 bottoms towards below be provided withGlass tube heater 6 in the breach of opening as defroster, be provided withfan 7 on the top of cooler 5.Below the action of the refrigerator of above formation is described.
Cooler 5 utilizes the cold-producing medium that flows to cool off within it, and by the action offan 7 refrigeratingchamber 1 and refrigeratingchamber 3A is cooled off.At this, evaporation that causes the moisture that contains in the preservation food of inflow, refrigeratingchamber 1 and refrigeratingchamber 3 of high temperature exterior air because of the switching of refrigeratingchamber door 2 and refrigerating-chamber door 4 at the air that cooler 5 carries out heat exchange etc. becomes the air of high humility, this air contacts with the cooler 5 of low temperature, and airborne moisture congeals into frost and frosting is deposited on the cooler 5 of low temperature.
Along with the increase of the accumulating amount of frost, and the heat conduction that carry out between the air of heat exchange on the surface ofcooler 5 hindered, and forms flowing resistance and cause that air quantity descends, and thermal conductivity factor descends, thereby it is not enough that cooling takes place.For this reason, before becoming the cooling deficiency,, utilize radiantheat heating cooler 5 to defrost toGlass tube heater 6 energisings.ByGlass tube heater 6 is configured in cooler 5 bottoms in the notch part of below opening, can shorten the distance ofglass tube 6 andcooler 5, improve defrosting efficiency.The cooler with such formation is disclosed in the Japan 2002-5553 communique.
Yet, in above-mentioned formation in the past, there is such problem:, owing to be to utilize the radiant heat ofGlass tube heater 6 to defrost, have the limit aspect the defrosting efficiency further improving although shortened distance betweenGlass tube heater 6 and thecooler 5, improved defrosting efficiency.
Below to as one of method that further improves defrosting efficiency, efficiently the method for the heat transferred cooler of Glass tube heater is narrated.Figure 11 is the stereogram of major part of the cooler of other band defrosters in the past, and Figure 12 is the stereogram of its defroster.
In Figure 11 and Figure 12, cooler 8A comprises a plurality ofcooling fins 10 and connects therefrigerant pipe 9 of cooling fins 10.Have Glasstube heater 11,glass tube 12,plate 13 as defroster.Particularly, after theplate 13 of the shape of the periphery upper surface that will beglass tube 12 is installed on theglass tube 12, the periphery upper surface ofplate 13 is contacted with the bottom ofcooling fins 10, form the cooler ofband defroster.Plate 13 is made by the big material aluminium of thermal conductivity factor.
At this moment, have following problem: at the position that plate 13 contacts withglass tube 12, heat passes to coolingfins 10 by plate 13.Yet, be difficult to plate 13 andglass tube 12 betweenplate 13 andglass tube 12, can locally produce air layer in the state configuration that does not produce the gap on the length direction ofglass tube 12 between withplate 13 and glass tube 12.Its result, heat is trapped in this air layer, also can produce the phenomenon ofheat slave plate 13 toglass tube 12 reflections, can't therefore can't improve defrosting efficiency efficiently with heat transferred cooling fins 10.
And, in kind of refrigeration cycle, to have used under the situation of combustible refrigerant, the means that are suppressed at as the surface temperature withglass tube 12 below the ignition temperature of combustible refrigerant also can be considered above-mentioned formation.Yet as mentioned above, there is air layer in the part betweenplate 13 and theglass tube 12, and the heat onglass tube 12 surfaces passes air layer and reflects toglass tube 12 afterplate 13 radiation.Like this, the surface temperature ofglass tube 12 is difficult to reduce significantly, the surface temperature ofglass tube 13 can't be suppressed at below the ignition temperature of combustible refrigerant.
Summary of the invention
The present invention can provide following a kind of cooler, comprising: by a plurality of cooling fins with connect the cooler that the refrigerant pipe of cooling fins constitutes; And the defroster that cooler is defrosted, defroster is the Glass tube heater that has glass tube and be arranged on the heater wire of glass tube inside, part at cooling fins is provided with breach, all causes of this breach form bending part and the open opening portion of quilt that the cooling fins bending forms, in this breach, insert Glass tube heater, and bending part contacts with glass tube.Like this, do not influence the position of photothermal effect in the opening portion, therefore can utilize the radiant heat of Glass tube heater to supply with heat to cooler effectively.And owing to the bending part that is arranged on the cooling fins contacts with glass tube, thereby the heat that is radiated the glass tube surface from heater wire can be supplied with heat to cooler effectively by the direct bending part supply to cooling fins of heat conduction.In addition, the heat on glass tube surface can reduce the surface temperature of the glass tube of Glass tube heater to the conduction of cooling fins heat.
In addition, the heat on glass tube surface can reduce the surface temperature of the glass tube of Glass tube heater to the conduction of cooling fins heat.
The present invention is by only being provided with bending part on the periphery of the vertical of breach, direction does not influence the position of photothermal effect below reaching above the glass tube, thereby the top direction of glass tube can utilize the radiant heat to cooler integral body to defrost, in addition, the following direction of glass tube can defrost effectively to the below of cooler, thereby can utilize the radiant heat of Glass tube heater to supply with heat to cooler effectively.And, because the bending part that only is arranged on the periphery of vertical of breach of cooling fins contacts with glass tube, thereby the heat that is radiated the glass tube surface from heater wire is directly supplied with to the bending part of cooling fins by the heat conduction, can supply with heat to cooler effectively, improve defrosting efficiency.
In addition, because the heat heat on glass tube surface is transmitted to cooling fins, can reduce the surface temperature of the glass tube of Glass tube heater.
The present invention is by being provided with bending part on the periphery of the periphery of the vertical of breach and horizontal direction, the bending part that then is arranged on the periphery of horizontal direction of breach of cooling fins contacts with the top of glass tube.Like this, the heat that is radiated the glass tube surface from heater wire can be supplied with to cooler by heat conduction, and the radiant heat of Glass tube heater can supply with to cooler from the opening portion, can more effectively improve defrosting efficiency.
Because the bending part that is arranged on the periphery of horizontal direction of breach contacts with the top of glass tube, thereby the heat heat of glass tube upper face is transmitted to cooling fins, can further reduce the surface temperature on the glass tube top of Glass tube heater.
The present invention is provided with more than two places at least by the bending part with the horizontal direction of breach, increases the contact area on bending part and glass tube top, can promote the heat conduction, more effectively to cooler supply heat, further improves defrosting efficiency.
The heat heat of glass tube upper face is transmitted to cooling fins, can further reduce the surface temperature on the glass tube top of Glass tube heater.
The bending angle of the bending part of the horizontal direction of the present invention by making breach is below 90 degree, when Glass tube heater inserts breach, even produce the deflection of glass tube etc., also can make bending part on the periphery of the horizontal direction that is arranged on breach keep reliably, equably with the glass tube state of contact.Like this, heat can pass to cooler equably, can improve defrosting efficiency.And glass tube can easily insert and it is contacted with cooling fins, thereby can boost productivity.
The bending part of cooling fins of the present invention is plane, and the bending part of cooling fins is contacted with glass tube, further improves defrosting efficiency.In addition, be plane by the bending part that makes cooling fins, cooling fins carries out bending machining easily, for the assembleability that Glass tube heater is inserted cooler, because it is plane that the glass tube of bending part is provided with face, glass tube inserts easily, thereby can boost productivity.
The present invention is arranged on the substantial middle of the depth direction of breach with the opening portion of the horizontal direction of breach, makes the open position in the top of glass tube portion.Like this, can under the situation of the photothermal effect that does not influence Glass tube heater, transmit heat, and can prevent the delay of heat, promote free convection, improve defrosting efficiency to cooler.
The present invention is by being arranged on breach the bottom of cooling fins, can be used to supply with to cooler integral body from the radiant heat free convection upward of Glass tube heater, can shorten the distance of the drip tray part that is positioned at cooler below and Glass tube heater, can utilize Glass tube heater to defrost towards the radiant heat of below for the drip tray part.Its result needn't be provided as other defrosters such as face heater of the defrosting of drip tray part.For the assembleability that Glass tube heater is inserted cooler, owing to Glass tube heater can be inserted from the below of cooler, it is more easy therefore to compare with the state that Glass tube heater is arranged on the cooler central portion.
The bending part of cooling fins of the present invention is being provided with on each cooling fins more than two places, can increase heat conducting effective contact area, further improves defrosting efficiency.
The present invention can be efficiently with the whole cooler of the heat transferred of Glass tube heater by breach being arranged on the central authorities of the depth direction of cooler.
The length of the bending part of the present invention by making cooling fins is more than 5% of gap length between the adjacent cooling fins, can carry out effectively from the heat conduction of Glass tube heater to cooling fins.
The length of the vertical of the present invention by making breach is bigger than the external diameter of glass tube, thereby can be with the Glass tube heater folding and unfolding in breach.Like this, Glass tube heater is not outstanding from cooler, can make the cooler miniaturization of band defroster.
The present invention with combustible refrigerant as the cold-producing medium that flows in the refrigerant pipe, the heat heat on glass tube surface is transmitted to cooling fins, thereby can under the situation of the thermal capacity that does not reduce Glass tube heater the glass tube surface temperature be suppressed at below the ignition temperature of combustible refrigerant.
Description of drawings
Fig. 1 is the stereogram of cooler of the band defroster of expression example 1 of the present invention.
Fig. 2 is the stereogram of the cooler of the band defroster shown in Figure 1 seen from below.
Fig. 3 is the cutaway view along the 3-3 line of the cooler of band defroster shown in Figure 1.
Fig. 4 is the cutaway view of the major part of defroster shown in Figure 1.
Fig. 5 is the detail view of major part of cooling fins of the cooler of band defroster shown in Figure 1.
Fig. 6 is the stereogram of cooler of other band defrosters of example 1 of the present invention.
Fig. 7 is the stereogram of cooler of the band defroster of example 2 of the present invention.
Fig. 8 is the cutaway view along the 8-8 line of the cooler of band defroster shown in Figure 7.
Fig. 9 is the detail view of major part of cooling fins of the cooler of band defroster shown in Figure 7.
Figure 10 is the cutaway view of the major part of refrigerator in the past.
Figure 11 is the stereogram of major part of the cooler of other band defrosters in the past.
Figure 12 is the stereogram of defroster shown in Figure 11.
(symbol description)
21 coolers
22 refrigerant pipes
23 cooling fins
24 Glass tube heaters
25 breach
26 heater wires
27 glass tubes
30 bending parts
31 opening portions
The specific embodiment
Below, further the present invention is described in detail with reference to accompanying drawing.But, accompanying drawing is an ideograph, represents that the size of each position relation is also incorrect.In addition, the present invention is not limited to this example.
(example 1)
Utilize Fig. 1～Fig. 6 that example 1 is described.
In Fig. 1, the cooler (hereinafter referred to as cooler) of band defroster comprises: by a plurality of coolingfins 23 with connect the cooler 21 that therefrigerant pipe 22 of coolingfins 23 constitutes; TheGlass tube heater 24 that contacts with coolingfins 23 as defroster.
Enclose the iso-butane that has as combustible refrigerant in therefrigerant pipe 22.
The bottom substantial middle of the coolingfins 23 of cooler 21 be provided with towards below thebreach 25 of opening, only the periphery in the vertical ofbreach 25 is provided with bending part 30.The position that does not form bendingpart 30 in the circumference ofbreach 25 has by open opening portion 31.Thereby be not on the whole circumference ofbreach 25, to form bendingpart 30 continuously.Here said openingportion 31 is meant the part that does not form bending part 30.For example, be also included within the so-called protruding circle that the position of insertion refrigerant pipe of the end face of coolingfins 23 often is processed to (Japanese: カ ラ-) portion etc.
Bendingpart 30 is provided with two place's bending parts with respect to a cooling fins, and being provided with on the direction ofglass tube 27, two sides ofglass tube 27 peripheries contact with coolingfins 23 with bending part 30.The material ofrefrigerant pipe 22 andcooling fins 23 is the big aluminium of thermal conductivity factor.
Such cooler for example forms with following method.
At first, utilize punch process that coolingfins 23 is provided with the roughly breach of T font.This punch process is preferably inserted with processing that forms the cooling fins peripheral shape and formation refrigerant pipe and is carried out simultaneously with the processing of slotted hole, can reduce operation like this.
In addition, be provided with this roughly the processing method of T font breach also can adopt methods such as Laser Processing.Then, be used to limit the bending position of bendingpart 30 and the metal die of bending angle carries out punch process,form bending part 30.
In addition, this bend processing method also can adopt the processing method by flector.
The refrigerant pipe that therefrigerant pipe 22 that will be formed by a refrigerant pipe bending machining then, inserts coolingfins 23 inserts in the slotted hole of usefulness and makes its tight contact.
ThenGlass tube heater 24 is inserted in thebreach 25 of coolingfins 23,glass tube 27 is closely contacted with bendingpart 30, thereby form cooler.
More than refrigerant pipe has been used the so-called snakelike refrigerant pipe that a refrigerant pipe bending machining is formed, also can utilize soldering etc. to be connected to form refrigerant pipe by straight sections and bent portion so-called U-shaped (ヘ ア ピ Application) pipe that constitutes and the elbow of turning back that constitutes by bent portion.At this moment, the U-shaped pipe inserted cooling fins after, the elbow of turning back is installed on the end of straight sections of U-shaped pipe, utilize soldering etc. to form refrigerant pipe.
Below the effect of the cooler of formation like this is described.
When the cooler after thefrosting 21 was defrosted,heater wire 26 was because of generating heat from the energising oflead 29, toglass tube 27 radiations heat energies.Heat further carries out radiation fromglass tube 27, and cooler 21 is defrosted.Because of the bendingpart 30 of coolingfins 23 contacts withglass tube 27, thereby the heat that is radiatedglass tube 27 surfaces fromheater wire 26 supplies to bendingpart 30 by the heat conduction, and coolingfins 23 is defrosted.
And,Glass tube heater 24 inserts in thebreach 25 of coolingfins 23 bottoms from horizontal direction, only the bendingpart 30 that is provided with on the periphery of the vertical ofbreach 25 contacts with theglass tube 27 ofGlass tube heater 24, thusglass tube 27 top and below direction do not influence the position of radiant heat effect.Its result, can utilize radiant heat direction aboveglass tube 27 that cooler 21 integral body are defrosted, and the radiant heat of direction helps defrosting to the drip tray (not shown) that is in cooler 21 belows part belowglass tube 27, can improve defrosting efficiency.
The external diameter ofglass tube 27 is 10.5mm, and the glass tube insertion section size C ofbreach 25 is 10.8mm.Establish greatlyyer by glass tube insertion section size C, just can easilyglass tube 27 be inserted in thebreach 25 than the external diameter ofglass tube 27 withbreach 25.
The length A of the bendingpart 30 of coolingfins 23 is 4.9mm.Bending part 30 is plane, and the contact-making surface ofglass tube 27 is the circle shape.On the other hand, by the setting of glass tube insertion section size C and bending angle D, can after insertingglass tube 27 in thebreach 25 bendingpart 30 be contacted reliably withglass tube 27, and bendingpart 30 is plane, bendingpart 30 be processed easily.
The height B of bendingpart 30 is 12mm, sets greatlyyer than the external diameter 10.5mm ofglass tube 27, therebyglass tube 27 can be arranged to not give prominence to from the bottom of cooler 21, obtains making the effect of the cooler miniaturization of being with defroster.
In addition, as shown in Figure 5, bending angle D bending machining is 85 °.Because glass tube insertion section size C sets greatlyyer than the external diameter ofglass tube 27, thus by make bendingpart 30 towardsglass tube 27 direction is set, thereby whenglass tube 27 was set,glass tube 27 can contact reliably with the bendingpart 30 of cooling fins 23.But, also can set glass tube insertion section size C littler than the external diameter ofglass tube 27, making the bending angle D of bendingpart 30 be 90 °, andglass tube 27 is pressed into.
And each coolingfins 23 is provided with two place's bendingparts 30, and being provided with on the direction ofglass tube 27, two sides ofglass tube 27 peripheries contact with coolingfins 23, can increase heat conducting effective contact area, more highland defrosting of energy efficiency.
The length of the bendingpart 30 by makingcooling fins 23 is more than 5% of gap length between theadjacent cooling fins 23, can improve from the thermal conduction effect ofglass tube 27 to coolingfins 23, improves the defrosting efficiency of cooler 21.And the length of the bendingpart 30 by makingcooling fins 23 is more than 20% of gap length between theadjacent cooling fins 23, can further improve defrosting efficiency.For the maximum of the ratio of the gap length between the length A of bendingpart 30 and theadjacent cooling fins 23, when the relation of (glass tube insertionsection size C 1/2) 〉=(gap length between the adjacent cooling fins 23) was set up, maximum was 100%.If when the relation of (glass tube insertionsection size C 1/2)＜(gap length between the adjacent cooling fins 23) was set up, maximum was less than 100%.
On the other hand, be 494 ℃ as the ignition temperature of the iso-butane of combustible refrigerant, thereby the surface temperature ofglass tube 27 need be set at than low 100 ℃ below 394 ℃ of ignition temperature, to guarantee security.
For the cooler 21 that coolingfins 23 is formed with the arranged spaced of spacing of fin 10mm, the length of the bendingpart 30 of this example be between theadjacent cooling fins 23 gap length 49%,glass tube 27 surface temperatures are 330 ℃, the cold-producing medium of kind of refrigeration cycle uses combustible refrigerant, has the reduction effect of enough glass tube surface temperatures this moment.Therefore, can provide a kind of like this refrigerator, even combustible refrigerant being provided with to defrost under the environment that leaks in the atmosphere and also can preventing catching fire of combustible refrigerant in the defrosting means.
And owing to can improve defrosting efficiency and shorten defrosting time, thereby can reduce the power consumption of refrigerator.
In this example, on all coolingfins 23, all be provided with bendingpart 30, but also can dispose the coolingfins 23 that is not provided with bendingpart 30 as required.For example, also the coolingfins 23 that is provided with bendingpart 30 alternately can be provided with the coolingfins 23 that is not provided with bendingpart 30, or be provided with the coolingfins 23 of bendingpart 30 every two configuration a slices.
In this example, with the bottom thatGlass tube heater 24 inserts cooler 21, also can insertGlass tube heater 24 again in the short transverse position intermediate of cooler as shown in Figure 6, thereby a cooler is inserted two Glass tube heaters.Also can insert the Glass tube heater more than three.
In this example, coolingfins 23 is provided with two place's bendingparts 30, but also a bendingpart 30 can be set as required.
In this example,refrigerant pipe 22, coolingfins 23 are all made by the big material aluminium of thermal conductivity factor, and the material ofrefrigerant pipe 22, coolingfins 23 is copper also.
(example 2)
Utilize Fig. 7～Fig. 9 that example 2 is described.In Fig. 7, cooler comprises: by a plurality of coolingfins 23 with connect the cooler 21 that therefrigerant pipe 22 of coolingfins 23 constitutes; TheGlass tube heater 24 that contacts with coolingfins 23 as defroster.Enclose the iso-butane that has as combustible refrigerant in therefrigerant pipe 22.
The bottom substantial middle of the coolingfins 23 of cooler 21 be provided with towards below thebreach 25 of opening, on the periphery of the periphery of the vertical ofbreach 25 and horizontal direction, be provided with bendingpart 30.
The position that does not form bendingpart 30 in the circumference ofbreach 25 exists by open opening portion 31.In addition, be not on the whole circumference ofbreach 25, to form bendingpart 30 continuously.
Here said openingportion 31 is meant the part that does not form bending part 30.For example, so-called protruding circle portion that is also included within that the position of insertion refrigerant pipe of the end face of coolingfins 23 often is processed to etc.
More particularly, when cooler 21 is disposed as illustrated in fig. 7,Glass tube heater 24 is flatly inserted in thebreach 25 of coolingfins 23 bottoms, 2bending parts 30 that vertical atbreach 25 is provided with and two bending parts that are provided with in the horizontal direction (that is near two bendingparts 30 from being provided with Ha font roughly the top of breach 25) are contacted with theglass tube 27 ofGlass tube heater 24.
The length F of the length A of the bendingpart 30 of the vertical of coolingfins 23 and the bendingpart 30 of horizontal direction is 4.9mm, and the height B of bendingpart 30 is 12mm, and the glass tube insertion section size C ofbreach 25 is 10.8mm, and the bending angle D of bendingpart 30 is 85 °.Coolingfins 23 is that so-called spacing of fin is 10mm with the length ofadjacent cooling fins 23.
Each cooling fins is provided with bendingpart 30 everywhere, being provided with on the direction ofglass tube 27, contacts with bendingpart 30, coolingfins 23 on two sides and the top ofglass tube 27 peripheries.
The bending angle E of the bendingpart 30 of the horizontal direction of coolingfins 23 is below 90 °.Refrigerant pipe 22, coolingfins 23 are formed by the big material aluminium of thermal conductivity factor.
Such cooler for example forms with following method.At first, utilize punch process that coolingfins 23 is provided with roughly criss-cross breach.This punch process is preferably inserted with processing that forms the cooling fins peripheral shape and formation refrigerant pipe and is carried out simultaneously with the processing of slotted hole, can reduce operation like this.
But be provided with this roughly the processing method of cross breach also can adopt methods such as Laser Processing.
Then, be used to limit the bending position of bendingpart 30 and the metal die of bending angle carries out punch process,form bending part 30.
In addition, this bend processing method also can adopt the processing method by flector.
The refrigerant pipe that therefrigerant pipe 22 that will be formed by a refrigerant pipe bending machining then, inserts coolingfins 23 inserts in the slotted hole of usefulness and closely contacts.ThenGlass tube heater 24 is inserted in thebreach 25 of coolingfins 23,glass tube 27 is closely contacted with bendingpart 30, form cooler thus.
More than refrigerant pipe has been used the so-called snakelike refrigerant pipe that a refrigerant pipe bending machining is formed, also can utilize soldering etc. to be connected to form refrigerant pipe by straight sections and bent portion so-called U-shaped pipe that constitutes and the elbow of turning back that constitutes by bent portion.At this moment, the U-shaped pipe inserted cooling fins after, the elbow of turning back is installed on the end of straight sections of U-shaped pipe, utilize soldering etc. to form refrigerant pipe.
Below the effect of the cooler of formation like this is described.
When the cooler after thefrosting 21 was defrosted,heater wire 26 was because of generating heat from the energising oflead 29, toglass tube 27 radiations heat energies.Heat further carries out radiation fromglass tube 27, and cooler 21 is defrosted.Because of the bendingpart 30 of coolingfins 23 contacts withglass tube 27, thereby the heat that is radiatedglass tube 27 surfaces fromheater wire 26 supplies to bendingpart 30 by the heat conduction, and coolingfins 23 is defrosted.
And, can pass through openingportion 31, the top direction ofglass tube 27 utilizes radiant heat that cooler 21 integral body are defrosted, and the following direction ofglass tube 27 helps the defrosting to drip tray (not shown) part that is in cooler 21 belows, can improve defrosting efficiency.
By at the periphery of the vertical ofbreach 25 and the periphery of horizontaldirection bending part 30 being set, the bendingpart 30 that then is arranged on the periphery of horizontal direction ofbreach 25 of coolingfins 23 contacts with the top of glass tube 27.Its result, the heat that is radiatedglass tube 27 surfaces fromheater wire 26 can be supplied with to cooler 21 by heat conduction, and the radiant heat ofGlass tube heater 24 can be from the openingportion 31 supplies to cooler 21 simultaneously, can more effectively improve defrosting efficiency.
Owing to the bendingpart 30 on the periphery of the horizontal direction that is arranged onbreach 25 contacts with the top ofglass tube 27, thereby the heat heat ofglass tube 27 upper faces is transmitted to coolingfins 23, can further reduce the surface temperature onglass tube 27 tops ofGlass tube heater 24.
The substantial middle that is arranged on the depth direction of breach by the openingportion 31 with horizontal direction promptly is configured in the top ofglass tube 27, can improve the radiant heat effect to greatest extent.
The length F of the length A of the bendingpart 30 of the vertical of coolingfins 23 and the bendingpart 30 of horizontal direction is 4.9mm.Bending part 30 is plane, be the circle shape with the contact-making surface ofglass tube 27, setting by glass tube insertion section size C and bending angle D, E, can after insertingglass tube 27 in thebreach 25, the bendingpart 30 of vertical be contacted reliably withglass tube 27, and bendingpart 30 is plane, and bendingpart 30 is processed easily.
The height B of the bendingpart 30 of vertical is 12mm, sets greatlyyer than the external diameter 10.5mm ofglass tube 27, therebyglass tube 27 can be arranged to not give prominence to from the bottom of cooler 21, obtains making the effect of the cooler miniaturization of being with defroster.
In addition, as shown in Figure 5, the bending angle D bending machining of the bendingpart 30 of vertical is 85 °.Because glass tube insertion section size C sets greatlyyer than the external diameter ofglass tube 27, thus by make bendingpart 30 towardsglass tube 27 direction is set, whenglass tube 27 was set,glass tube 27 can contact reliably with the bendingpart 30 of coolingfins 23 thus.But, also can set glass tube insertion section size C littler than the external diameter ofglass tube 27, making the bending angle D of bendingpart 30 be 90 °, andglass tube 27 is pressed into.
In addition, as shown in Figure 9, the bending angle E bend of the bendingpart 30 of horizontal direction is processed as below 90 °.By like this bendingpart 30 being tilted toglass tube 27, even whenglass tube 27 inserts, produce the deflection ofglass tube 27, the deviation that has the insertion angle or the shaping deviation of coolingfins 23,glass tube 27 is contacted with the bendingpart 30 of coolingfins 23 reliably.
In addition, consider the processability ofcooling fins 23, the insertion ofglass tube 27, bending angle E is preferably in 85 °～70 ° scope.
And, each coolingfins 23 is provided with bendingpart 30 everywhere, being provided with on the direction ofglass tube 27, contacts with coolingfins 23 at two places and upper surface two places of two sides ofglass tube 27 peripheries, can increase heat conducting effective contact area thus, more highland defrosting of energy efficiency.
The length of the bendingpart 30 by makingcooling fins 23 is more than 5% of gap length between theadjacent cooling fins 23, can improve from the thermal conduction effect ofglass tube 27 to coolingfins 23, improves the defrosting efficiency of cooler 21.And the length of the bendingpart 30 by makingcooling fins 23 is more than 20% of gap length between theadjacent cooling fins 23, can further improve defrosting efficiency.For the length F of the bendingpart 30 of the length A of the bendingpart 30 of vertical and horizontal direction maximum with respect to the ratio of the gap length between theadjacent cooling fins 23, when the relation of (glass tube insertionsection size C 1/2) 〉=(gap length between the adjacent cooling fins 23) was set up, maximum was 100%.If when the relation of (glass tube insertionsection size C 1/2)＜(between theadjacent cooling fins 23 at interval length) was set up, maximum was less than 100%.
On the other hand, be 494 ℃ as the ignition temperature of the iso-butane of combustible refrigerant, thereby the surface temperature ofglass tube 27 need be set at than low 100 ℃ below 394 ℃ of ignition temperature, to guarantee security.
For the cooler 21 that coolingfins 23 is formed with the arranged spaced of spacing of fin 10mm, the length of the bendingpart 30 of this example be between theadjacent cooling fins 23 gap length 49%,glass tube 27 surface temperatures are 330 ℃, the cold-producing medium of kind of refrigeration cycle uses combustible refrigerant, has the reduction effect of enough glass tube surface temperatures this moment.Therefore, can provide a kind of like this refrigerator, even combustible refrigerant leaks being provided with in the atmosphere of means of defrosting, defrosting under such environment also can prevent catching fire of combustible refrigerant.
And owing to can improve defrosting efficiency and shorten defrosting time, thereby can reduce the power consumption of refrigerator.
In this example, on coolingfins 23, be provided with the bendingpart 30 of two place's horizontal directions, but the bendingpart 30 of the above horizontal direction in three places also can be set as required.
In this example, on all coolingfins 23, all be provided with bendingpart 30, also can dispose the coolingfins 23 that is not provided with bendingpart 30 as required.For example, also the coolingfins 23 that is provided with bendingpart 30 alternately can be provided with the coolingfins 23 that is not provided with bendingpart 30, or be provided with the coolingfins 23 of bendingpart 30 every two configuration a slices.
In this example,refrigerant pipe 22, coolingfins 23 are all made by the big material aluminium of thermal conductivity factor, and the material ofrefrigerant pipe 22, coolingfins 23 is copper also.
In this example, be arranged on bendingpart 30 on the periphery of horizontal direction ofbreach 25 and be from being arranged to roughly two bendingparts 30 of Ha font near the top ofbreach 25, but also be not the Ha font, also along the bending part of the linearity of left and right directions.
In sum, cooler of the present invention can improve defrosting efficiency by conducting to the heat of cooling fins from the radiant heat of Glass tube heater with from Glass tube heater.
When using combustible refrigerant, the heat heat on glass tube surface is transmitted to the cooling fins that contacts with glass tube, thereby can under the situation of the thermal capacity that does not reduce heater wire the surface temperature of glass tube be suppressed at below the ignition temperature of combustible refrigerant.
Utilizability on the industry
Above-mentioned cooler with defroster of the present invention can be supplied with the heat of Glass tube heater efficiently to cooler, thereby Also can be applicable to the purposes of refrigerator, automatic vending machine etc.
Claims (according to the modification of the 19th of treaty)
1. cooler with defroster comprises:
By a plurality of cooling fins with connect the cooler that the refrigerant pipe of described cooling fins constitutes; And the defroster that described cooler is defrosted,
Described defroster is the Glass tube heater that is made of glass tube and the heater wire that is arranged on described glass tube inside, part at described cooling fins is provided with notch part, the bending part that all causes of this notch part form described cooling fins bending and formed by open opening portion inserts in described breach and states Glass tube heater to some extent and described bending part contacts with described glass tube.
2. the cooler of band defroster as claimed inclaim 1 is characterized in that, only is provided with bending part on the periphery of the vertical of described breach.
3. the cooler of band defroster as claimed inclaim 1 is characterized in that, is provided with bending part on the periphery of the periphery of the vertical of described breach and horizontal direction.
4. the cooler of band defroster as claimed inclaim 3 is characterized in that, the opening portion of the horizontal direction of described breach is arranged on the central authorities of the depth direction of described breach.
5. the cooler of band defroster as claimed inclaim 3 is characterized in that, the bending part of the horizontal direction of described breach has more than two places.
6. the cooler of band defroster as claimed inclaim 5 is characterized in that, the bending angle of the bending part of the horizontal direction of described breach is below 90 degree.
7. the cooler of band defroster as claimed inclaim 1 is characterized in that, the bending part of described cooling fins is plane.
8. as the cooler of each described band defroster in theclaim 1 to 3, it is characterized in that described breach is arranged on the bottom of described cooling fins.
9. the cooler of band defroster as claimed inclaim 8 is characterized in that,
Claims (13)
Translated fromChineseApplications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005139546 | 2005-05-12 | ||
| JP139546/2005 | 2005-05-12 | ||
| JP078445/2006 | 2006-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101137877Atrue CN101137877A (en) | 2008-03-05 |
| CN100513950C CN100513950C (en) | 2009-07-15 |
Family
ID=39161099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800076593AExpired - Fee RelatedCN100513950C (en) | 2005-05-12 | 2006-05-11 | Cooler with defrosting device and refrigerator having cooler with defrosting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100513950C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591751A (en)* | 2013-10-30 | 2014-02-19 | 西安交通大学 | Defrosting system of air cooling refrigerator and defrosting control method thereof |
| CN104641190A (en)* | 2012-09-19 | 2015-05-20 | 松下知识产权经营株式会社 | Refrigerator |
| CN114761747A (en)* | 2019-11-11 | 2022-07-15 | 青岛海尔电冰箱有限公司 | Defrosting device and refrigerator comprising same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267331A (en)* | 2001-03-13 | 2002-09-18 | Matsushita Refrig Co Ltd | Refrigerator |
- 2006
- 2006-05-11CNCNB2006800076593Apatent/CN100513950C/ennot_activeExpired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104641190A (en)* | 2012-09-19 | 2015-05-20 | 松下知识产权经营株式会社 | Refrigerator |
| CN104641190B (en)* | 2012-09-19 | 2016-12-14 | 松下知识产权经营株式会社 | Freezer |
| CN103591751A (en)* | 2013-10-30 | 2014-02-19 | 西安交通大学 | Defrosting system of air cooling refrigerator and defrosting control method thereof |
| CN114761747A (en)* | 2019-11-11 | 2022-07-15 | 青岛海尔电冰箱有限公司 | Defrosting device and refrigerator comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100513950C (en) | 2009-07-15 |
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