CN101839608B - Cooler with defrosting heater, and object storage device - Google Patents
Cooler with defrosting heater, and object storage device Download PDFInfo
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- CN101839608B CN101839608B CN2010101672402A CN201010167240A CN101839608B CN 101839608 B CN101839608 B CN 101839608B CN 2010101672402 A CN2010101672402 A CN 2010101672402A CN 201010167240 A CN201010167240 A CN 201010167240A CN 101839608 B CN101839608 B CN 101839608B
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Abstract
The present invention relates to a cooler with a defrosting heater, and an object storage device. The cooler with the defrosting heater according to the invention comprises the following components: a cooler (1) which is composed of a cooling tube (2) with refrigerant flowing therein and a plurality of fins (4) that pass through the cooling tube (2); and the defrosting heater (5) which is configured with a mode that the refrigerant in the cooling tube (2) is caused to flow through a convection effect. Therefore, the defrosting efficiency is improved and the electrical power consumption in defrosting can be greatly reduced. Additionally, the space taken by the cooler and the defrosting heater can be reduced. Furthermore, the temperature of the defrosting heater can be suppressed to lower than an ignition temperature of the flammable refrigerant.
Description
The application is that application number is 200810176339.1, the applying date is on November 20th, 2008, denomination of invention is divided an application for the application for a patent for invention of " cooler and the article storage apparatus of band Defrost heater ".
Technical field
The present invention is the cooler that is arranged at the formation freeze cycle on the refrigerator etc., particularly the cooler and the article storage apparatus of band Defrost heater.
Background technology
In recent years, along with tight demand energy-saving refrigerator in the market, also to reappraise the power consumption of band Defrost heater.In addition; With regard to the cold-producing medium in the freeze cycle; In order to tackle depletion of the ozone layer and the greenhouse effects of the earth problem that causes by fluorine Lyons gas, just advancing from the HFC (hydrofluorocarbon-HFC) that uses in the past not damage the ozone layer and the conversion of iso-butane hydrocarbon refrigerants such as (R600a) that the greenhouse effects of the earth coefficient is low (below be called " HC cold-producing medium ") to adopting.
This HC cold-producing medium, for example iso-butane is owing to be combustible refrigerant, thereby, catch fire and develop into the possibility of fire producing to have under the situation that cold-producing medium leaks because of spark etc.Therefore, in the refrigerator that uses the HC cold-producing medium, owing to might catch fire because of the contact of electric components and relay etc., the heating of Defrost heater etc. cause, thereby need to consider various explosion precautions.
Be entitled as purpose to eliminate this energy saving and the security of relevant Defrost heater all the time; The scheme of improved refrigerator has been proposed the structure of cooler and Defrost heater is carried out in for example TOHKEMY 2004-190959 communique (below, be called patent documentation 1).
What Figure 18 represented is the cooler side amplification view on every side of the refrigerator of above-mentioned patent documentation 1 record.Figure 19 is the side amplification view of Defrost heater portion of the cooler of this refrigerator.
Like Figure 18 and shown in Figure 19,62 overlapping being embedded on the long cooling tubes 61 of fin that existing cooler 60 will be made up of the thin slice of aluminium with the spacing of stipulating.Then cooling tube 61 is bent into snakelike, form with each storeroom in the corresponding certain width of back side width and fin depth dimensions, through bending rectangular-shaped with the specified altitude size that forms.
And, between the lowest end of the fin 62 of Defrost heater 64 and cooler 60, be provided with heater housing 66.Heater housing 66 is used to protect the upper section of Defrost heater 64.Have, heater housing 66 is used to avoid become water droplet attached to the frost on the cooler 60 melts and drop onto the surface of the glass tube 67 that constitutes Defrost heater 64 and produce evaporation sound being accompanied by the defrosting action again.Heater housing 66 is same with Defrost heater 64, in the fastening groove (not shown) that embeds and remain on the slit-shaped that is formed on the end plate 63 from the side.
In addition; Heater housing 66 is when the above-mentioned cooler 60 of assembling; Can be through being clipped between the end plate 63 also fixing with being configured as snakelike cooling tube 61 and fin 62; Its section configuration forms herringbone, so that accept from fin 62 fallen water and its rhone 68 that is easy to is downwards flowed, near the chamfered portion the top of central authorities, offers along a plurality of slits 69 of refrigerator inside width opening again.
Adopt said structure, when refrigerator (cooler 60) got into the defrosting action, by heating installation (ascending air) and photothermal heat effect that the Defrost heater that has generated heat 64 produces, at first the heater cover 66, and then, through slit 69 heating coolers 60.
In addition, through from by the conduction of the heat of the warmed-up heater housing 66 of above-mentioned heating installation,, also can promote defrosting even end 63 is heated.
Yet, adopt the structure of the cooler 60 of above-mentioned patent documentation 1 record, though to being effective through conduct the surface temperature that reduces Defrost heater 64 to the heat of end plate 63; But because the heat of Defrost heater 64 is used to the heating of heater housing 66; Thereby cooler 60 needs heat time heating time, its result; Make the defrosting time lengthening, have the inapparent problem of energy-saving effect.
Have again; Shown in figure 19, in when defrosting, from cooler 60 melt the white piece a that drops onto on the heater housing 66 the process of further melting because capillary effect etc. and be back to the inboard from the end of heater housing 66; Then, produce the phenomenon that water droplet b drips.
At this moment, water droplet b contacts with Defrost heater 64, perhaps drops onto on the Defrost heater 64, when evaporation, sounds, and lets the people produce uncomfortable feeling.In addition, cause the glass tube 67 of Defrost heater 64 sharply to cool off, also might bring influence the long-term service life of Defrost heater 64.Therefore, require to obtain some improvement.
On the other hand, existing refrigerator is the formation of the rear area outside the refrigerator of the storeroom of being located at foot Machine Room normally, the compressor of folding and unfolding freeze cycle in this Machine Room.But, if this structure owing to forming the folding and unfolding space that the storeroom of foot has been reduced in the Machine Room, has reduced the folding and unfolding volume.And the spatial form in folding and unfolding space also becomes except the complicated shape of the protuberance of Machine Room makes its folding and unfolding performance bad.
With respect to this; For example TOHKEMY 2001-99552 communique (below; Be called patent documentation 2) in the scheme of following refrigerator has been proposed; That is: be provided with the recessed recess of mode that descends with the back part of topmost in the storeroom of body of thermal insulating box, the high-pressure side that folding and unfolding constitutes the compressor etc. of freeze cycle in this recess constitutes machine.The refrigerator of this structure be owing to can make the folding and unfolding space of cooler and defrosting heater thinner at depth direction, and limits short transverse lower, thereby can guarantee the folding and unfolding amount of storeroom widely.
Figure 20 is the longitudinal section of the refrigerator of expression patent documentation 2 records.
Shown in figure 20, the inside of body of thermal insulating box 71 is formed with refrigerating chamber 72, refrigerating chamber 73, vegetable compartment 74 from top to bottom successively.And, be provided with refrigerating-chamber door 75 in the front openings of refrigerating chamber 72.
In addition, consider folding and unfolding property and serviceability, the refrigerating chamber 73 that is positioned at lower portion in the central authorities from body of thermal insulating box 71 is provided with the drawer type refrigerating chamber door 76 and vegetable compartment door 77 that can take out simply with vegetable compartment 74.
In the case of refrigerating chamber 72, be provided with a plurality of retractable frames 78, in addition, folding and unfolding container 79a, the 79b of opening shape above in refrigerating chamber 73 and vegetable compartment 74, being equipped with.This folding and unfolding container 79a, 79b are by means of direction is supported movably forwards, backwards by the roller of the guide rail of fore-and-aft direction (not shown) guiding.
The recess 80 of being located at body of thermal insulating box 71 is that the downward mode of back part with the topmost of refrigerating chamber 72 makes and runs through above the outer container 81 and the sunk place of end face back part at the outer container back side 82.Left and right sides wall with body of thermal insulating box 71 about recess 80 seals, and the top is unlimited with behind.The open section of this recess 80 uses the recess cover 85 that is made up of upper plate 83 and roughly rectangular with it backboard 84 to cover.In addition, recess cover 85 usefulness screws etc. removably are fixed on the body of thermal insulating box 71.
In Machine Room fan 88 is configured to be contained in recess 80, and use the recess cover 85 that constitutes by upper plate 83 and backboard 84 to cover as the compressor 86 of the constitution equipment of freeze cycle and condenser 87.
Be configured in the space of the back side that is frozen chamber 73 limiting as the cooler 89 of the constitution equipment of freeze cycle and Defrost heater (not shown).
Yet, even the cooler of making patent documentation 1 record 60 carries the structure in the refrigerator that patent documentation 2 is put down in writing, in the structure of Figure 18, because end plate 63 need be set, thereby, also can't reach the distance that shortens cooler 60 and Defrost heater 64.Therefore, adopt this structure, exist not to be suitable for the problem that is contained in by the interior volume of limit for height.
Summary of the invention
The present invention proposes for addressing the above problem; Its purpose is to provide a kind of radiation heating that utilizes Defrost heater to be used for heating-cooling coil energetically, and utilizes convection effect to make flow of refrigerant realize the raising of defrosting efficiency and the band defrosting of the power consumption can significantly reduce defrosting the time adds the cooler of right device.Have again, thus the total height through the band Defrost heater cooler that will constitute by cooler and Defrost heater suppress the lower cooler that a kind of band Defrost heater of realizing being configured to confined space is provided.
In addition, a kind of surface temperature that suppresses Defrost heater and applicable to the article storage apparatus that possesses the freezing cycle device that has sealed combustible refrigerant and guarantee the cooler of the band Defrost heater of article storage apparatus security is provided.
The cooler of band Defrost heater of the present invention has: the cooler that is made up of at the cooling tube of internal flow and a plurality of fins that connect cooling tube cold-producing medium; And to utilize convection effect to make the formation of the Defrost heater that the mode of the inner flow of refrigerant of cooling tube disposes.
Like this; Since the inner cold-producing medium of cooling tube by the Defrost heater heating and utilize convection effect in the pipe (below; Be called thermal convection current effect (thermo siphon)) in cooling tube, flow, thereby can improve defrosting efficiency, the power consumption in the time of can significantly reducing defrosting.
Have again, owing to can dwindle cooler and the shared space of Defrost heater, thereby can more extensively guarantee the article folding and unfolding volume in the article storage apparatus, can improve the folding and unfolding property and the serviceability of article.
In addition, under the situation of having used combustible refrigerant, owing to can the surface temperature of Defrost heater be suppressed to below the firing temperature of combustible refrigerant, thereby can keep security.
Description of drawings
Fig. 1 is the front view of cooler of the band Defrost heater of embodiment 1 of the present invention.
Fig. 2 is the side view of cooler of the band Defrost heater of this embodiment 1.
Fig. 3 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 1.
Fig. 4 is the exploded perspective view of major part of installation constitution of Defrost heater of cooler of the band Defrost heater of this embodiment 1 of expression.
Fig. 5 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of embodiment 2 of the present invention.
Fig. 6 is the exploded perspective view of major part of installation constitution of Defrost heater of cooler of the band Defrost heater of this embodiment 2 of expression.
Fig. 7 is the front view of cooler of the band Defrost heater of embodiment 3 of the present invention.
Fig. 8 is the side view of cooler of the band Defrost heater of this embodiment 3.
Fig. 9 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 3.
Figure 10 is the sectional block diagram of major part of installation constitution of Defrost heater of cooler of the band Defrost heater of this embodiment 3 of expression.
Figure 11 is the front view of cooler of the band Defrost heater of embodiment 4 of the present invention.
Figure 12 is the side view of cooler of the band Defrost heater of this embodiment 4.
Figure 13 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 4.
Figure 14 is the side partial cross-sectional of the refrigerator of embodiment 5 of the present invention.
Figure 15 is the Zoom Side cutaway view of quencher moiety of the refrigerator of this embodiment 5.
Figure 16 is the side partial cross-sectional of the refrigerator of embodiment 6 of the present invention.
Figure 17 is the Zoom Side cutaway view of quencher moiety of the refrigerator of this embodiment 6.
Figure 18 is the side view of the cooler of existing band Defrost heater.
Figure 19 is the Zoom Side cutaway view of Defrost heater peripheral part of the cooler of existing band Defrost heater.
Figure 20 is the side partial cross-sectional of existing refrigerator.
Among the figure:
1,1a-cooler, the 2-cooling tube, the 2a-straight sections, the 2b-bent portion, 2c-naked pipe portion,
The 2d-inlet tube, the 2e-outlet, the 3-storage heater, the 4-fin, the 5-Defrost heater,
The 5a-heater wire, the 5b-inner glass, 5c-outside glass, the 5d-lid, the 5e-auxiliary section,
The 5f-metal tube, the 5g-insulating materials, the 6-heat transfer plate, 6a, 6A-covering part,
6b, 6B-fixed part, 6c, 6c1,6c2-fit tightly portion, the 6d-guide portion,
6e, 6E-breakthrough part, 6f, 6g-otch, 6H-clamping part, the 6i-portion of being heated,
The 6j-metal frame, the 7-thermistor, the 11-main body, 12a, 12b, 12c, 12d-door,
The 13-compressor, 14-cooling chamber, 15, the 16-pipeline, 17-pressure fan.
The specific embodiment
Below, with reference to description of drawings embodiment of the present invention.Have, the present invention is not limited by this embodiment again.
(embodiment 1)
Fig. 1 is the front view of cooler of the band Defrost heater of embodiment 1 of the present invention.Fig. 2 is the side view of cooler of the band Defrost heater of this embodiment 1.Fig. 3 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 1.Fig. 4 is the exploded perspective view of major part of installation constitution of Defrost heater of cooler of the band Defrost heater of this embodiment 1 of expression.
In Fig. 1～Fig. 4, cooler 1 is that main body constitutes with cooling tube 2, storage heater 3 and fin 4, and cooling tube 2, storage heater 3 and fin 4 form with aluminum respectively.Cooling tube 2 carries out bending machining with the mode that aluminum pipe crawls with meander-like, and is connecting a plurality of fins 4.Cooling tube 2 alternately forms straight straight sections 2a and the bent portion 2b that bends to 180 degree, and bending machining snakelike (serpentine) shape of becoming meander-like to crawl.Straight sections 2a is connecting a plurality of fins 4.Therefore, the cold-producing medium that flows into from superposed inlet tube 2d has carried out during according to this through the runner that crawls flowing out from outlet 2e after the heat exchange of the heat exchange facilitation that fin 4 accompanied again.
At this, the 2c of naked pipe portion that is positioned at cooler 1 foot is the part with fin 4, is the part of partly exposing at the interval continuous tube-surface of regulation.In addition, the total length of the relative cooling tube 2 of the 2c of naked pipe portion is positioned at and comprises the roughly part of intermediate point.In other words, the 2c of naked pipe portion forms the pipeline of turning back in roughly between the mesozone of flow of refrigerant by the pair of pipes that constitutes toward road and return road, through the rising reversally of its flow direction of the cold-producing medium behind the 2c of this naked pipe portion.
In addition, as stated, fin 4 connects the straight sections 2a of cooling tube 2, and links to each other at above-below direction.Under the breakthrough status that is fixed on fin 4 of these fins 4 and cooling tube 2, cooling tube 2 fits tightly fixing through mechanical expander or hydraulic extend pipe.
Have, below cooler 1, be furnished with Defrost heater 5, Defrost heater 5 is configured to directly heat through the space of regulation the 2c of naked pipe portion of cooler 1.Thus, can make the flow of refrigerant in the cooling tube 2 through the thermal convection current effect.This Defrost heater 5 is a kind of double glazing pipe heaters, has: the heater wire 5a that the metallic resistance bodily form is become coiled type; Coat the inner glass pipe 5b of heater wire 5a; Coat the outside glass tube 5c of this inner glass pipe 5b; And the lid 5d that covers the both ends open portion of two glass tube 5b, 5c.
In addition, on the 2c of naked pipe portion of cooling tube 2, be fixed with the heat transfer plate of using with cooling tube 2 same materials (aluminium) formation 6.
Defrost water when covering part 6a is used to prevent to defrost drops to Defrost heater 5, and like Fig. 3, shown in Figure 4, forms the herringbone of swelling on the mediad.In addition, can also carry out hydrophily processing to its surface as required.And, be provided with breakthrough part 6e along the crest line that contacts with its top.Breakthrough part 6e for example forms as follows.At first, the middle body at the covering part 6a of tabular state forms otch 6f (Fig. 4).Then, the otch 6g (Fig. 4) that forms with otch 6f quadrature is gone up in (end in face of illustrated end and not shown the leaning on) at the two ends of this otch 6f.Then, be that center curvature is processed into herringbone with this covering part 6a with otch 6f.And then, be the crooked again angle of fulcrum with the root 6g1 of otch 6g, thereby being seen with another front end 6f2 of otch 6f from the projecting direction of top, the front end 6f1 of otch 6f overlaps.So, between two front end 6f1 of otch 6f, 6f2, form breakthrough part 6e.In addition, Fig. 4 representes the right part of Defrost heater 5, and Defrost heater 5 extends to the not shown end of a side in front of leaning on from illustrated inboard end.
In addition, breakthrough part 6e not necessarily will be arranged on the length direction of covering part 6a continuously, also can be provided with intermittently.In this case, can carry out the bending of covering part 6a simultaneously and the Punching Technology of processing and breakthrough part 6e forms through for example pressure processing etc.
The external diameter that fits tightly 6c of portion and the 2c of naked pipe portion as one man carries out bending, forms with face that the 2c of naked pipe portion has fitted tightly to contact.And, fit tightly the 6c of portion with its bending machining direction as the direction that encases the 2c of naked pipe portion.Therefore, when it is installed, the interval H (Fig. 4) that for example fits tightly the 6c of portion is set at the interval of a pair of naked pipe 2c of portion equates.Thus, after cooler 1 is accomplished, utilize a little flexible deformation force of the 2c of naked pipe portion and make therebetween, clamp the 2c of naked pipe portion, then, utilize restitution (rebound effect) formation of the 2c of naked pipe portion to fit tightly relation with the portion 6c of fitting tightly at a distance from narrowing down., can utilize anchor clamps etc. make fit tightly portion 6c and naked pipe portion 2c more firmly fit tightly, can accomplish the installation of heat transfer plate 6 thereafter.In addition, form this fit tightly relation in, can heat transfer plate 6 is more fixing to the 2c of naked pipe portion.
And, owing to will fit tightly the 6c of portion and be formed on continuously on the length direction of covering part 6a, thereby, the area that fits tightly with the 2c of naked pipe portion can be more extensively guaranteed, and sufficient heat transfer area can be formed.
As stated, be contained in the perspective plane of the being seen guide portion 6d of arrow directions X, can shorten the configuration space of above-below direction, can do the package assembly of Defrost heater 5 and heat transfer plate 6 compact through a part with Defrost heater 5.In other words, more lean on the mode of below to dispose Defrost heater 5 or guide portion 6d through being positioned at than the topmost of Defrost heater 5, thereby can shorten the configuration space of above-below direction with the foot of guide portion 6d.
In addition, fit tightly also to the 2c of naked pipe portion heat transfer plate 6 fixed method also has following method except the flexible metamorphosis that utilizes the above-mentioned naked pipe 2c of portion carries out.In the assembling procedure of cooler 1; Also can adopt following method: after having inserted the 6c of the portion that fits tightly of heat transfer plate 6 to the 2c of naked pipe portion; Cooling tube 2 is carried out mechanical expander or hydraulic extend pipe, the external diameter of the 2c of naked pipe portion is made more than the internal diameter of the 6c of the portion that fits tightly of heat transfer plate 6.
In this case, the fixing and cooling tube 2 to fitting tightly of the 2c of naked pipe portion that carries out heat transfer plate 6 simultaneously is fixing with fin 4, and operating efficiency is higher.
In addition, the fixed part 6b that is provided with at covering part 6a two ends is provided with otch 6h (Fig. 4) at leading section, is embedded among this otch 6h through the auxiliary section 5e that will cover 5d, just can and be fixed on the heat transfer plate 6 Defrost heater 5 clampings.
Have again, also have making to fit tightly the 6c of portion after the 2c of naked pipe portion fits tightly, fit tightly the 6c of portion and heat transfer plate 6 is fixed on the method on the cooler 1 through aluminium soldering.
As shown in Figure 1, tighten the thermistor 7 that closely connected merging is fixed with the formation temperature detecting unit of the control that is used to defrost at storage heater 3.
The cooler 1 that as above constitutes carries on refrigerator etc. and cools off running.And during the defrosting running, the cooling running is stopped, to Defrost heater 5 energisings.Thus, the 2c of naked pipe portion of cooling tube 2 directly heats with the radiant heat of Defrost heater 5, and heat transfer plate 6 is by heating promptly simultaneously.
Its result is trapped in the inner cold-producing medium of the 2c of naked pipe portion and receives the heat that the heating by the direct heating of the 2c of naked pipe portion and heat transfer plate 6 obtains, and is gasified when liquid component reaches a high temperature, and the heat of As time goes on carrying out above the lower direction moves.
That is, thus the positive heating of direct heating that defrosting running can be through the 2c of naked pipe portion that undertaken by Defrost heater 5 and the cooling tube 2 through heat transfer plate 6 improves the thermal convection current effect of the cold-producing medium in the cooling tube 2.Its result can improve defrosting efficiency, the power consumption in the time of can reducing defrosting.
Therefore, in the cooling tube 2 of cooler 1,, begin to melt attached to the frost on fin 4 and the cooling tube 2 owing to above-mentioned heat moves, so-called thermal convection current phenomenon makes temperature rise gradually from the lower direction top.
Thus, frost becomes water droplet or falls on the covering part 6a of heat transfer plate 6 with bulk state, and falls downwards because of the inclination of covering part 6a.But, according to condition, also produce an a part of end, and become the situation that water droplet falls gradually downwards at this attached on the covering part 6a.
Especially slowly fall with the surface that fits tightly the 6c of portion along covering part 6a attached to the white piece on the covering part 6a, and will return り Write む) to the interior side reflux of covering part 6a.But, because by the backflow of guide portion 6d restriction to covering part 6a inboard, thereby can suppress dripping, contacting to Defrost heater 5.
Have again, melt too, become water and will drip downwards attached to heat transfer plate 6 and frost on the 2c of naked pipe portion.Especially the frost that fits tightly 6c of portion and naked pipe portion 2c gap becomes moisture film A condition, because of its surface tension is adhered to (Fig. 3), and grows into water droplet B from moisture film A.But, move laterally owing to the inclination of guide portion 6d, just fall on the Defrost heater 5 that can not drip.
And, attached to the frost on heat transfer plate 6 and the 2c of naked pipe portion owing to promptly be heated by Defrost heater 5, thereby, with dry result of short time, increased the reliability of the above-mentioned action of dripping (having limited dripping on Defrost heater 5).
Therefore, the result of the guiding function of the defrost water of being undertaken by guide portion 6d can prevent the rapid cooling of Defrost heater 5 (outside glass tube 5c).Its result can suppress the breakage of outside glass tube 5c, perhaps produces the evaporation sound of frost, and then can suppress the thermal deformation etc. of Defrost heater 5.
In addition, this structure is a structure of utilizing the thermal convection current phenomenon that the cooling tube 2 of the heat that is difficult to directly to receive Defrost heater 5 is heated as stated.Therefore, the heat of Defrost heater 5 is moved effectively to the top that frost melts difficult cooler 1, can realize the shortening of defrosting time.
Have again, on the covering part 6a of heat transfer plate 6, be provided with breakthrough part 6e.Therefore, hot gas can not be filled in the covering part 6a yet, and hot gas is overflowed to the top from breakthrough part 6e.Also can utilize the ascending air of the hot gas of overflowing from breakthrough part 6e to heat attached to the frost on the cooling tube 2.So, the defrosting effect can be promoted, the further raising of defrosting efficiency can be expected.
In addition, Defrost heater 5 except to the conductive force of the heat transfer plate 6 that forms with the good conductor of heat conduction (aluminium) and, also carry out peripherad radiation heating.Therefore, can also utilize this radiation heating effect to promote the defrosting effect, can realize the power consumption in the time of further to shorten defrosting time and reduce defrosting.
Have, the 6c of the portion that fits tightly of heat transfer plate 6 is formed on the length direction of covering part 6a continuously again.Therefore, can guarantee heat transfer area, can conduct heat to the 2c of naked pipe portion effectively to the 2c of naked pipe portion.Therefore, in the raising that helps defrosting efficiency, increased the fixed-area to the 2c of naked pipe portion of heat transfer plate 6, can heat transfer plate 6 be fixed on the cooling tube 2 more reliably.
In addition and since with heat transfer plate 6 when the 2c of naked pipe portion installs, can fit tightly fitting tightly of 6c of portion and the 2c of naked pipe portion, thereby assembling operation property is good, can suppress the increase of component number, and the simplification of implementation structure.
Have, cooler 1 is made heat transfer plate 6 is fixed on the 2c of naked pipe portion of the cooling tube 2 that constitutes cooler 1, and Defrost heater 5 is installed in the structure on the heat transfer plate 6 again.Therefore, heat transfer plate 6 has the function of the distance of stably guaranteeing Defrost heater 5 and heat transfer plate 6.Meanwhile, can expect to keep and the maintainability that defrosts improves as the quality of cooler of band Defrost heater.
And, because Defrost heater 5 is approaching with 2c of naked pipe portion and heat transfer plate 6, thereby can realize setting cooler 1 and Defrost heater 5 shared height dimensions shorter.Its result can realize miniaturization as the cooler of band Defrost heater, becomes easy to the lift-launch of freezing machine etc.
In addition, the material of heat transfer plate 6 considers to use the aluminum identical with cooling tube 2 from the corrosion aspect of thermal conductivity, galvanic corrosion etc., but as kind, is the best with use fine aluminium class wherein.In addition, also can use other aluminium alloy.Have again, under the situation of the surface-coated lid that cooler 1 is carried out the 2c of naked pipe portion such as application, perhaps in the less environment of the influence that galvanic corrosion takes place, also can use aluminium metal in addition and other thermally conductive materials.
(embodiment 2)
Then, embodiment 2 is described.And, for putting on identical label and omit detailed explanation with embodiment 1 identical inscape.
Fig. 5 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of embodiment 2 of the present invention.Fig. 6 is the exploded perspective view of major part of installation constitution of Defrost heater of cooler of the band Defrost heater of this embodiment 2 of expression.
Among Fig. 5, Fig. 6, be: through clamp the fixing to heat transfer plate 6 of carrying out Defrost heater 5 full week of covering 5d by the circular-arc clamping part 6H on the fixed part 6B that is located at heat transfer plate 6 with embodiment 1 dissimilarity.
Adopt this structure, can more firmly Defrost heater 5 be fixed on the heat transfer plate 6.In addition, can do the size of the length direction of heat transfer plate 6 short slightly, can constitute the cooler of band Defrost heater more compactly.
As stated; According to embodiment 1,2; Have following structure: many cooling tubes 2 dispose at above-below direction; The 2c of naked pipe portion that the cooling tube 2 of hypomere does not connect as fin, Defrost heater 5 disposes with the mode of the heating naked pipe 2c of portion, above Defrost heater 5, disposed by the covering part 6a that covers Defrost heater 5 tops and with covering part 6a continuously and the heat transfer plate 6 that constitutes with the 6c of the portion that fits tightly that the 2c of naked pipe portion fits tightly.
So, Defrost heater 5 passes through heat transfer plate 6 heating-cooling coil 2 energetically, and can improve the thermal convection current effect of the cold-producing medium in the cooling tube 2 therefrom.Its result can improve defrosting efficiency, the power consumption in the time of reducing defrosting.
In addition,, thereby can compress, can realize dwindling by the shared space of cooler 1 and Defrost heater 5 by the shared height dimension of cooler 1 and Defrost heater 5 through near configuration Defrost heater 5 2c of naked pipe portion that is positioned at hypomere.
And, fit tightly the 6c of portion and form with the mode bending machining that the periphery along the 2c of naked pipe portion fits tightly.Thus, the heat transfer between heat transfer plate 6 and the cooling tube 2 can be carried out well, and the thermal convection current effect in the cooling tube 2 is had an effect effectively.In addition and since be undertaken by bending machining with the fitting tightly of cooling tube 2, thereby can heat transfer plate 6 be fixed on the cooler 1 with this structure that fits tightly, can realize the minimizing and the simplified structure of component number.
In addition, heat transfer plate 6 has and fits tightly the guide portion 6d that the 6c of portion forms continuously, front end extends from the direction that Defrost heater 5 leaves.
Thus, be limited in when defrosting to drip to Defrost heater 5 through covering part 6a, and will drip defrost water on the covering part 6a to the assigned position guiding and drip by guide portion 6d from the defrost water that cooler 1 drips.
Therefore, suppress defrost water on the 2c of naked pipe portion directly drips Defrost heater 5, can be with the evaporation sound that causes thus with by directly preventing trouble before it happens to the drip thermal deformation etc. of the Defrost heater that causes of Defrost heater.
In addition, fitting tightly the 6c of portion is arranged on the length direction lateral margin of heat transfer plate 6 continuously.Thus, can increase the heat transfer area that is undertaken by heat transfer plate 6, can strengthen the thermal convection current effect of cooling tube 2, can expect the further raising of defrosting efficiency to cooling tube 2.In addition,, can also increase the fixed-area to cooling tube 2 of heat transfer plate 6, can heat transfer plate 6 be fixed on the cooling tube 2 more firmly along with the increase that fits tightly portion's area.
In addition, heat transfer plate 6 has the fixedly fixed part 6B of Defrost heater 5.Thus, can the steady heat transfer plate 6 with the distance of Defrost heater 5.Therefore, can obtain stable defrosting effect.And, because other that can not need be used for fixing Defrost heater 5 constitutes parts or with its simplification, thereby, can improve the surcharge of heat transfer plate 6, can reduce component number.
In addition, covering part 6a has the breakthrough part 6e that overflows to the top from the air of Defrost heater 5.Thus; With regard to the defrosting of cooler 1; Outside the thermal convection current effect of the cooling tube 2 that not only obtains through the heat transfer by means of heat transfer plate 6 is carried out, also come attached to the frost on the cooling tube 2 from the ascending air heating that breakthrough part 6e selects by the air that is positioned at Defrost heater 5 sides through resulting from.Therefore, can expect that defrosting efficiency further improves.
(embodiment 3)
Then, embodiment 3 is described.And, for putting on identical label and omit detailed explanation with embodiment 1,2 identical inscapes.
This embodiment and embodiment 1,2 dissimilarities are: the heat transfer plate of this embodiment not only has covering part and fits tightly portion, also has the portion of being heated that has fitted tightly with Defrost heater.
Fig. 7 is the front view of cooler of the band Defrost heater of embodiment 3 of the present invention.Fig. 8 is the side view of cooler of the band Defrost heater of this embodiment 3.Fig. 9 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 3.Figure 10 is the sectional block diagram of major part of Defrost heater installation constitution of cooler of the band Defrost heater of this embodiment 3 of expression.
Among Fig. 7～Figure 10, the heat transfer plate 6 of this embodiment has the long covering part 6A that is positioned at Defrost heater 5 tops and covers Defrost heater 5.In addition, heat transfer plate 6 has the 6c1 of the portion that fits tightly of length direction one side of being located at covering part 6A.In addition, heat transfer plate 6 has the 6i of the portion of being heated that is connected with the portion 6c1 of fitting tightly and fits tightly with the roughly whole peripheral surface (about 3/4) of Defrost heater 5.Have again, heat transfer plate 6 have be connected with the portion 6i of being heated and with the portion 6c1 of the fitting tightly 6c2 of the portion that fits tightly of position discretely.These can through an aluminium sheet is carried out pressure processing and processing methods such as bending machining or extrusion molding integrally formed.This heat transfer plate 6 also can be formed by a plurality of parts as required.
Defrost water when covering part 6A is used to prevent to defrost drops to Defrost heater 5, though make to a direction, also can make the herringbone of swelling on the mediad.In addition, as required, also can carry out hydrophily processing to its surface.And, utilize above-mentioned being tilted in and fitting tightly between the 6c2 of portion to form the space, and with this space as breakthrough part 6E.
Have, the 6i of the portion bending machining of being heated one-tenth is consistent with the external diameter of the outside glass tube 5c of Defrost heater 5 again.Be heated the constituting of the 6i of portion contacts through the face that this bending machining forms with outside glass tube 5c fits tightly, and accepts the heat of Defrost heater 5 effectively, and Defrost heater 5 is fixed on the heat transfer plate 6.
In addition, fit tightly the 6c1 of portion, 6c2 bending machining and become consistent, and formation contacts with the face that the 2c of naked pipe portion fits tightly with the external diameter of the 2c of naked pipe portion.And, fit tightly the 6c1 of portion, 6c2 with its bending machining direction as the direction of embracing the 2c of naked pipe portion.Therefore, when it was installed, the interval H (Fig. 9) that for example will fit tightly the 6c1 of portion, 6c2 set for the interval of a pair of naked pipe 2c of portion and equates.Thus, after cooler 1 is accomplished, at first, utilize some flexible deformation forces of the 2c of naked pipe portion to make therebetween at a distance from narrowing down, and with fit tightly the 6c1 of portion, 6c2 clamps the 2c of naked pipe portion.Then, can utilize the reactivation (rebound effect) of the 2c of naked pipe portion to form the relation that fits tightly, further make with anchor clamps etc. again to fit tightly fitting tightly of the 6c1 of portion, 6c2 and the 2c of naked pipe portion and become firmly, thereby can accomplish the installation of heat transfer plate 6.In addition, can form this fit tightly relation in, heat transfer plate 6 is fixed to the 2c of naked pipe portion more reliably.
And, fit tightly the 6c1 of portion and on the length direction of covering part 6A, form continuously, likewise form continuously and fit tightly the 6c2 of portion and fit tightly the 6c1 of portion at the length direction of the 6i of portion that is heated.Therefore, can more extensively guarantee and the area that fits tightly of the 2c of naked pipe portion, can form sufficient heat transfer area.
In addition; With heat transfer plate 6 to the 2c of naked pipe portion fit tightly and fixed method except the flexible metamorphosis that utilizes the above-mentioned naked pipe 2c of portion carries out; Can also adopt following method: for example in the assembling procedure of cooler 1; After the 6c1 of the portion that fits tightly that has inserted heat transfer plate 6 to the 2c of naked pipe portion, 6c2, cooling tube 2 is carried out mechanical expander or hydraulic extend pipe, the external diameter of the 2c of naked pipe portion is made more than the internal diameter of the 6c1 of the portion that fits tightly, 6c2 of heat transfer plate 6.
In this case, the fixing and cooling tube 2 to fitting tightly of the 2c of naked pipe portion that can carry out heat transfer plate 6 simultaneously is fixing with fin 4, and operating efficiency is higher.
In addition, also have making to fit tightly the 6c1 of portion, 6c2 after the 2c of naked pipe portion fits tightly, thus through aluminium soldering fit tightly the 6c1 of portion, 6c2 is fixed on the method on the cooler 1 with heat transfer plate 6.
The cooler 1 that as above constitutes carries on freezing machine etc. and cools off running.And during the defrosting running, the cooling running stops, to Defrost heater 5 energisings.Thus, the 6i of the portion of being heated of heat transfer plate 6 is made attached to the frost on the 6i of portion that is heated and melts by directly heating.Meanwhile, through fit tightly the 6c1 of portion, 6c2 conducts heat to cooling tube 2 sides, the 2c of naked pipe portion of cooling tube 2 is by heating promptly.
Its result is trapped in the inner cold-producing medium of the 2c of naked pipe portion and receives the heat that the heating by the 2c of naked pipe portion obtains, and is gasified when liquid component carries out high temperatureization, As time goes on carries out moving from the heat of lower direction top.
That is, Defrost heater 5 is by means of heat transfer plate 6 heating-cooling coil 2 energetically, and can improve the thermal convection current effect of the cold-producing medium in the cooling tube 2 thus.Its result can improve defrosting efficiency, the power consumption in the time of can reducing defrosting.
Therefore, in the cooling tube 2 of cooler 1,, begin to melt attached to the frost on fin 4 and the cooling tube 2 owing to above-mentioned heat moves, so-called thermal convection current phenomenon makes temperature rise gradually from the lower direction top.
Thus, frost becomes water droplet or drop on the covering part 6A of heat transfer plate 6 with bulk state, and falls downwards because of the inclination of covering part 6A.
As stated, the cooler 1 of this embodiment is a structure of utilizing the thermal convection current phenomenon that the cooling tube 2 of the heat that is difficult to directly to receive Defrost heater 5 is heated.Therefore, the heat of Defrost heater 5 is moved effectively to the top of melting difficult cooler 1 of frost, can realize the shortening of defrosting time.
Have, owing on the covering part 6A of heat transfer plate 6, be provided with breakthrough part 6E, therefore, hot gas can not be full of in the covering part 6A yet again, and hot gas can be overflowed to the top from breakthrough part 6E, also can utilize this ascending air to heat attached to the frost on the cooling tube 2.So, the defrosting effect can be promoted, the further raising of defrosting efficiency can be expected.
In addition, the heat carrier (aluminium) that heat transfer plate 6 usefulness heat conduction are good forms, and the part of Defrost heater 5 is exposed from the 6i of portion that is heated.Therefore, except conductive force, radiation heating can also be carried out, heat transfer plate 6 can be heated to covering part 6A.Therefore, can utilize this radiation heating effect to promote the defrosting effect, can realize the power consumption when further shortening defrosting time and reducing defrosting.
Have, the 6c1 of the portion that fits tightly of heat transfer plate 6,6c2 form on the length direction of the covering part 6A and the 6i of portion that is heated continuously again.Therefore, can guarantee heat transfer area, can conduct heat to the 2c of naked pipe portion effectively to the 2c of naked pipe portion.Therefore, in the raising that helps defrosting efficiency, increased the fixed-area to the 2c of naked pipe portion of heat transfer plate 6, can heat transfer plate 6 be fixed on the cooling tube 2 more reliably.
In addition and since with heat transfer plate 6 when the 2c of naked pipe portion installs, can fit tightly fitting tightly of the 6c1 of portion, 6c2 and the 2c of naked pipe portion, thereby assembling operation property is good, can suppress the increase of component number, and the simplification of implementation structure.
Have, cooler 1 is made heat transfer plate 6 is fixed on the 2c of naked pipe portion of the cooling tube 2 that constitutes cooler 1, and Defrost heater 5 is installed in the structure on the heat transfer plate 6 again.Therefore, heat transfer plate 6 can also play the function of the distance of stably guaranteeing Defrost heater 5 and cooling tube 2.Therefore, can expect to keep and the maintainability that defrosts improves as the quality of cooler of band Defrost heater.
And, can set cooler 1 and Defrost heater 5 shared height dimensions shorter.Its result can realize miniaturization as the cooler of band Defrost heater, and in the lift-launch of freezing machine etc., is becoming effective structure.
In addition, the material of heat transfer plate 6 considers to use the aluminum identical with cooling tube 2 from the corrosion aspect of thermal conductivity, galvanic corrosion etc., but use fine aluminium class in them preferably.In addition, also can use other aluminium alloy.Have again, under the situation of cooler 1 being carried out the covering naked pipe 2c of portion surfaces such as application, perhaps in the less environment of the influence that galvanic corrosion takes place, also can use metal and other thermally conductive materials beyond the aluminium.
As stated, according to embodiment 3, heat transfer plate 6 has the 6i of the portion of being heated that the heating face with Defrost heater 5 fits tightly.Thus, can the heat of Defrost heater 5 be conducted heat to cooling tube 2 via heat transfer plate 6 from the 6i of portion that is heated, can heat energetically by 5 pairs of cooling tubes 2 of Defrost heater.Therefore, can further improve the thermal convection current effect of the cold-producing medium in the cooling tube 2.Its result can improve defrosting efficiency, the power consumption in the time of reducing defrosting.
In addition, through near configuration Defrost heater 5 2c of naked pipe portion that is positioned at hypomere, thereby can compress by the shared height dimension of cooler 1 and Defrost heater 5.Therefore, can realize dwindling by the shared space of cooler 1 and Defrost heater 5.
And, fit tightly the 6c1 of portion, 6c2 forms with the mode bending machining that the periphery along the 2c of naked pipe portion fits tightly.Thus, the heat transfer between heat transfer plate 6 and cooling tube 2 can be carried out well, and the thermal convection current effect in the cooling tube 2 is acted on effectively.In addition and since be obtain through bending machining with the fitting tightly of cooling tube 2, thereby, can heat transfer plate 6 be fixed on the cooler 1 with this structure that fits tightly, can reduce component number and simplified structure.
In addition, be heated the 6i of portion with fit tightly the 6c1 of portion, 6c2 forms continuously.Thus, can the heat of Defrost heater 5 be passed to cooling tube 2, can expect the raising of defrosting efficiency to lose few state.
In addition, fitting tightly the 6c1 of portion, 6c2 is arranged on the length direction lateral margin of heat transfer plate 6 continuously.Thus, can increase the heat transfer area that is undertaken by heat transfer plate 6, can strengthen the thermal convection current effect of cooling tube 2, can expect the further raising of defrosting efficiency to cooling tube 2.In addition, be accompanied by the increase that fits tightly portion's area, can also increase the fixed-area to cooling tube 2 of heat transfer plate 6, can more firmly heat transfer plate 6 be fixed on the cooling tube 2.
In addition, the 6i of portion that is heated has the fixed function that Defrost heater 5 is fixed on heat transfer plate 6.Thus, can stablize the distance of cooling tube 2 and Defrost heater 5.Therefore, can obtain stable defrosting effect.And other that can not need be used for fixing Defrost heater 5 constitutes parts or with its simplification.
In addition, covering part 6A has the breakthrough part 6E that overflows to the top from the air of Defrost heater 5.Thus; With regard to regard to the defrosting of cooler 1; Not only utilize the thermal convection current effect of the cooling tube 2 that the heat transfer by means of heat transfer plate 6 obtains, also utilize to result from the air that is positioned at Defrost heater 5 sides and heat attached to the frost on the cooling tube 2 from the ascending air that breakthrough part 6E overflows.Therefore, can expect that defrosting efficiency further improves.
(embodiment 4 is described)
Then, embodiment 4 is described.And, for putting on identical label and omit detailed explanation with embodiment 1,2,3 identical inscapes.
This embodiment is with embodiment 1,2,3 dissimilarities: Defrost heater of this embodiment and the contacts side surfaces of cooler ground are installed.
Figure 11 is the front view of cooler of the band Defrost heater of embodiment 4 of the present invention.Figure 12 is the side view of cooler of the band Defrost heater of this embodiment 4.Figure 13 is the Zoom Side cutaway view of Defrost heater peripheral part of cooler of the band Defrost heater of this embodiment 4.
In Figure 11～Figure 13, identical with embodiment 1～3, cooling tube 2 is that aluminum pipe is alternately formed straight sections 2a and the bent portion 2b that bends to 180 degree, and the curved shape that bending machining becomes meander-like to crawl forms, and is connecting a plurality of fins 4.But, in this embodiment, be not provided with the 2c of naked pipe portion like enforcement mode 1～3.
And with regard to cooler 1a, the straight sections 2a of cooling tube 2 is in the direction configuration of approximate horizontal.Cooling tube 2 is processed into curved shape, and a plurality of straight sections 2a are positioned at above-below direction.On this each straight sections 2a, Defrost heater 5 is installed on the side of straight sections 2a with straight sections 2a quadrature ground.
Consider that from the corrosion aspect of thermal conductivity, galvanic corrosion etc. metal tube 5f uses with cooling tube 2 congener fine aluminium class materials and is the best, but also can use other aluminium alloy.
In addition, on metal tube 5f, be welded with the external diameter metal frame 6j about equally that bends to cooling tube 2 (straight sections 2a).The material of this metal frame 6j is preferably identical with metal tube 5f.In addition, metal frame 6j is grown as far as possible fits tightly in the periphery of cooling tube 2 (for example, more than the half cycle).
Therefore, through metal frame 6j is fixed on the straight sections 2a of cooling tube 2 with fitting tightly, thereby accomplish Defrost heater 5 installing and fixing to cooler 1a.As required,, use anchor clamps that the opening of metal frame 6j is dwindled, can Defrost heater 5 be fixed on the cooling tube 2 more firmly through fitting tightly under the state on the cooling tube 2 at metal frame 6j.
In this embodiment and since with Defrost heater 5 be installed in the approaching straight sections 2a of the bent portion 2b of cooling tube 2 on, thereby, be in fin 4 and contact or approaching position.
Its result, Defrost heater 5 is the structures that fit tightly with cooler 1a (cooling tube 2), and becomes the structure that in the width dimensions of cooler 1a, disposes, and becomes very-close-coupled structure as the cooler of being with Defrost heater.
Have, metal tube 5f is owing to fit tightly and be fixed on the straight sections 2a through metal frame 6j again, thereby, be cooled equally with cooling tube 2 and fin 4.At this moment, owing to metal tube 5f increases the heat transfer exterior surface area as the part of cooler 1a, thereby brought into play the effect that the cooling capacity that makes cooler 1a increases.
As above such cooler 1a that constitutes is carried on freezing machine etc. cools off running.And when the defrosting running, the cooling running stops, to Defrost heater 5 energisings.
Its result; Be trapped in the inner cold-producing medium of straight sections 2a and receive heat by the heating generation of straight sections 2a; As time goes on gasification when making liquid component carry out high temperatureization is carried out moving and moving from the heat of lower direction top to the heat that rightabout one side is installed from the installation side of Defrost heater 5.
In other words,, can realize the raising of the interior convection current of pipe of cooling tube 2, also can defrost efficiently for the top of the cooler 1a that is difficult to defrost through carrying out the heating of straight sections 2a efficiently.Thus, can shorten defrosting time, the power consumption in the time of significantly reducing defrosting.
Therefore, in the cooling tube 2 of cooler 1a, utilize that above-mentioned heat moves, so-called thermal convection current effect temperature rises from horizontal and lower direction top gradually, begin to melt attached to fin 4 and frost on the cooling tube 2.Thus, frost becomes water droplet and falls downwards along the surface of fin 4.
In addition, owing to make the configuration that Defrost heater 5 is extended at above-below direction, so guide downwards because of deadweight and drip attached to the frost on the metal tube 5f (water droplet).Therefore, can the heat of the needed Defrost heater 5 of defrosting evaporation of water be restricted to Min., can the heat of Defrost heater 5 be used for the heating of cooler 1a, can improve defrosting efficiency.
And, promptly be heated the time drying of lacking attached to the frost (water droplet) on metal tube 5f and the straight sections 2a thereby by Defrost heater 5.Its result can be used for the big calorimetric of Defrost heater 5 melting of frost, can shorten defrosting time.
In addition, owing to be the structure of utilizing aforesaid thermal convection current phenomenon heating-cooling coil 2, thereby the heat of Defrost heater 5 is also moved to the top of melting difficult cooler 1a of frost effectively, can realize the shortening of defrosting time.
Have again, when the defrosting running, except conductive force, though effect is carried out peripherad radiation heat release less to cooler 1a.Therefore, utilize the radiation exothermic effects of metal tube 5f can promote the defrosting effect, can expect the further shortening of defrosting time and the minimizing of the power consumption in when defrosting.
Though the frost that has melted can contact with metal tube 5f with water, the heat of metal tube 5f is transmitted to cooling tube 2, and the surface temperature of metal tube 5f reduces.Therefore, even on frost and the surface of water, also can prevent because of generation abnormal sounds (evaporation sound) such as bumping phenomenons attached to metal tube 5f.
Have, metal tube 5f is owing to form with the good conductor of heat conduction (aluminium) again, thereby, when the cooling running, the heat transfer exterior surface area is increased as the part of cooler 1a, be used for the increase of the cooling capacity of cooler 1a.Metal tube 5f is because seldom damaged, thereby, can also withstand the pressure that produces along with unusual frosting, the heater wire 5a that can suppress to be caused by breakage exposes.
Have again, owing to use metal material form metal pipe 5f and the metal frame 6j identical, so be accompanied by the heating of Defrost heater 5 and thermal expansion, thermal contraction that heating stops are stablized with cooling tube 2.Therefore, can suppress contacting of Defrost heater 5 (metal tube 5f) and cooler 1a (cooling tube 2) and produce distortion.Its result can both obtain stable defrosting effect in long-term the use.
Have again, owing to be with the direct structure to the straight sections 2a of low temperature (cooling tube 2) heat conduction of the heat of Defrost heater 5, thereby the surface temperature that can make Defrost heater 5 is below the flashing temperature of combustible refrigerant.Therefore, even, also can suppress catching fire of combustible refrigerant, can guarantee security just in case occur in the occasion of the leakage of the combustible refrigerant that flows in the cooling tube 2.
In addition; Because Defrost heater 5 (metal frame 6j) can obtained the heat transfer structure (structure that fit tightly) of Defrost heater 5 to cooler 1a when straight sections 2a installs; So its assembling operation property is good, can suppress increase and the simplified structure of component number.
Have again,, can suppress the shared spatial volume of cooler 1a and Defrost heater 5 as far as possible through adopting the structure that fits tightly of cooler 1a and Defrost heater 5.Its result can realize densification as the cooler of band Defrost heater, in the lift-launch of freezing machine etc., is becoming favourable structure.
In addition, through metal tube 5f with cooling tube 2 non-contacting parts on the surface temperature that rib that heat release uses or fin can also further reduce metal tube 5f is set.
Have again; Prepare the different Defrost heater of heating capacity; Top at the cooler 1a that for example defrosting is difficult disposes jumbo Defrost heater, and the Defrost heater at the bottom of the easy cooler 1a of defrosting configuration low capacity also can heat cooler 1a efficiently.
Like above explanation, according to this embodiment, Defrost heater 5 is provided with the contacts side surfaces ground of cooler 1a.Like this,,, the thermal convection current effect of the cold-producing medium in the cooling tube 2 can be effectively utilized, defrosting efficiency can be improved by Defrost heater 5 heating-cooling coil 2 energetically in when defrosting.Its result, the power consumption in the time of can significantly reducing defrosting time with defrosting.In addition, because Defrost heater 5 and cooling tube 2 are fitted tightly, thereby can cooling tube 2 and Defrost heater 5 shared spatial contents be suppressed to Min., can make compact structure.
And, cooling tube 2 by a plurality of straight sections 2a with a plurality of straight sections 2a are the bent portion 2b that the shape that crawls is connected and constitute, Defrost heater 5 and a plurality of straight sections 2a can be with heat conduction and to fix with the mode of a plurality of straight sections 2a quadratures.
Thus, can make the configuration that Defrost heater 5 is extended at above-below direction.Its result in when running defrosting, can make attached to Defrost heater 5 lip-deep defrost water to guide downwards because of deadweight and drip.Therefore, can the heat of the needed Defrost heater 5 of defrosting evaporation of water be restricted to Min., can the heat of Defrost heater 5 be used for the heating of cooler 1a.Therefore, can improve defrosting efficiency.
And Defrost heater 5 is made up of heater wire 5a, the metal tube 5f that coats heater wire 5a and the insulating materials 5g that is filled in the metal tube 5f.Thus, can the heat of Defrost heater 5 be passed to cooling tube 2 effectively by metal tube 5f.Its result can the surface temperature of Defrost heater 5 suppressed very low, but killer tube be split the raising security.
In addition, Defrost heater 5 is fixed on the metal frame 6j on the cooling tube 2 being provided with on the outer peripheral face of metal tube 5f to use.Thus, can carry out the heat transmission of Defrost heater 5 effectively to cooling tube 2.
In addition, metal tube 5f uses with cooling tube 2 identical metal materials with metal frame 6j and forms.Thus, be accompanied by the heating of Defrost heater 5 and thermal expansion that heating stops, thermal contraction is stable, can suppress the contacting to produce and be out of shape of cooling tube 2 of metal tube 5f and the cooler 1a of Defrost heater 5.Its result can both obtain stable defrosting effect in long-term the use.
(embodiment 5)
Then, embodiment 5 is described.This embodiment is the refrigerator of cooler that has carried the band Defrost heater of embodiment 1,2.For putting on identical label and omit detailed explanation with embodiment 1,2 identical inscapes.
Figure 14 is the side view of a part of refrigerator that has cut the cooler of the band Defrost heater that has carried embodiment 5 of the present invention.Figure 15 is the Zoom Side cutaway view of the quencher moiety of this embodiment 5.
Among Figure 14, Figure 15, refrigerator has: the main body 11 that is constituted and be provided with in inside a plurality of storerooms (not shown) by body of thermal insulating box; Door 12a, the 12b, 12c, the 12d that are provided with accordingly with each storeroom; And the cooling device of cold storage chamber.
Cooling device has the freeze cycle that compressor 13, condenser, decompressor (all not shown) and cooler 1 is connected into ring-type, and cold-producing medium uses combustible refrigerant (for example, iso-butane).
The structure of cooler 1 is like enforcement mode 1, shown in 2, and is configured in the cooling chamber 14 that is formed at main body 11 bottoms.
In addition, on main body 11, be provided with cooling chamber 14 in abutting connection with and the pipeline 15,16 that is communicated with each storeroom.Constituting of pipeline 15,16 utilized the pressure fan of being located in the cooling chamber 14 17 to be shown in each storeroom by the arrow of cooler 1 cooled cold wind such as Figure 15 and circulated.And the loop structure of cold air is owing to using well-known structure to omit detailed explanation.
Have, compressor 13 is configured in the rear portion, top of main body 11 again, and main body 11 is made the structure of the storage dischargeable capacity of guaranteeing storeroom thus.
Below, to its action of refrigerator explanation that as above constitutes.In addition, use Fig. 1～Fig. 6 to explain to the detailed structure of cooler 1.
Have again, when the cooling running is proceeded, the surperficial frosting of the cooling tube 2 of cooler 1, the 2c of naked pipe portion and fin 4.
At this, accumulation duration of runs of compressor 13 etc. be standard when cooling converting defrosting into and turns round, then Defrost heater 5 (heater wire 5a) is added assigned voltage as as everyone knows.Through to this Defrost heater 5 additional assigned voltages, thereby the surface temperature of the inner glass pipe 5b of Defrost heater 5 and outside glass tube 5c rises, and utilizes its radiant heat heating heat transfer plate 6 and 2c of naked pipe portion.
Its result, the 2c of naked pipe portion is heated by the radiant heat of Defrost heater 5 with from the heat transfer by means of the heat transfer plate that fits tightly the 6c of portion 6.
Especially, cooler 1 as in the enforcement mode 1,2 explanatorily, the relative distance of 2c of naked pipe portion and Defrost heater 5 is shorter.And, by the radiant heat heating naked pipe 2c of portion from glass tube 5b, 5c top.Thus, the 2c of naked pipe portion is by heating efficiently.Its result, the frost surperficial attached to the 2c of naked pipe portion melts at short notice.
In addition, the frost that has melted during defrosting can fall from the below of 2c of naked pipe portion and fin 4.But, as in the enforcement mode 1,2 explanatorily since utilize heat transfer plate 6 covering part 6a, fit tightly the 6c of portion and guide portion 6d and suppressed water droplet directly drip to the surface of the outside glass tube 5c that becomes high temperature thereby the generation of the sound that can avoid evaporating.
Have, the cooler 1 after the 2c of naked pipe portion is heated passes through from the heat conduction of the 2c of naked pipe portion to cooling tube 2, and carries out from the heating of lower direction top again.Its result utilizes the thermal convection current effect like explanation in the enforcement mode 1,2, and cooler 1 is heated from the lower direction top, and is whole by defrosting effectively.
In other words, through carrying out the heating of the 2c of naked pipe portion effectively, thereby can realize the heat conduction of cooling tube 2 and the raising of thermal convection current effect, even also can defrost effectively for the top of the cooler that is difficult to defrost 1.Therefore, can shorten defrosting time, the power consumption in the time of significantly reducing defrosting.
In addition, heat transfer plate 6 thus, can not make the photothermal hot gas of following Defrost heater 5 be full of in the space that is formed by heat transfer plate 6 and Defrost heater 5 owing on covering part 6a, be provided with breakthrough part 6e.Therefore, can utilize the ascending air of overflowing from breakthrough part 6e will follow the heat of the photothermal hot gas of Defrost heater 5 to be delivered to the fin 4 of cooler 1.
In addition, the ventilation when the breakthrough part 6e that on the covering part 6a of heat transfer plate 6, is provided with also can be used for cooling off, thus also can suppress to hinder the cold wind circulation of being undertaken by pressure fan 17, can suppress the reduction of cooling performance.
Have, refrigerator is the structure that the heat of Defrost heater 5 is transmitted to the heat transfer plate 6 and the 2c of naked pipe portion of low temperature again.The surface temperature that therefore, can make Defrost heater 5 is below the flashing temperature of combustible refrigerant.And, Defrost heater 5 is made double-tube type pharoid with inner glass pipe 5b and outside glass tube 5c.So, even, also can suppress catching fire of combustible refrigerant, can guarantee security just in case occur in the occasion of the combustible refrigerant leakage of flowing in the cooling tube 2.
In addition, refrigerator as in the enforcement mode 1,2 explanatorily, reduce height dimension by the cooler of the shared band Defrost heater of Defrost heater 5 and cooler 1.Therefore, the volume of cooling chamber 14 is diminished and can increase the article container volume of storeroom.
Have again; In this embodiment; Though the cooler of embodiment 1, the band Defrost heater shown in 2 is used for refrigerator; Even but the cooler of the band Defrost heater shown in the embodiment 3 is used for refrigerator, and not only obtain the getable effect of cooler from the band Defrost heater shown in the embodiment 3, still can obtain effect same as described above as refrigerator.
(embodiment 6 is described)
Then, embodiment 6 is described.This embodiment is the refrigerator of cooler that has carried the band Defrost heater of embodiment 4.For putting on identical label and omit detailed explanation with embodiment 1～4 identical inscape.
Figure 16 is the partial, partially-cross-sectioned side-elevation view of the refrigerator of embodiment 6 of the present invention.Figure 17 is the Zoom Side cutaway view of quencher moiety of the refrigerator of this embodiment 6.
The structure of cooler 1a is configured in the cooling chamber 14 of the lower backside that is formed at main body 11 shown in enforcement mode 4.Other structure is identical with embodiment 5.
Below, to its action of refrigerator explanation that as above constitutes.In addition, use Figure 11～Figure 13 to explain to the detailed structure of cooler 1a.
At this, accumulation duration of runs of compressor 13 etc. be standard when cooling converting defrosting into and turns round, then Defrost heater 5 (heater wire 5a) is added assigned voltage as as everyone knows.Through to this Defrost heater 5 additional assigned voltages, thereby the surface temperature of Defrost heater 5 rises, through metal tube 5f heating straight sections 2a.Its result is melted in the short time attached to metal tube 5f and the lip-deep frost of straight sections 2a.
In other words,, can realize the raising of the thermal convection current effect of cooling tube 2, even also can defrost effectively for the top of the cooler that is difficult to defrost 1 through carrying out the heating of straight sections 2a effectively.Therefore, can shorten defrosting time, the power consumption in the time of significantly reducing defrosting.
Have, refrigerator is with the direct structure to the straight sections 2a of low temperature (cooling tube 2) heat conduction of the heat of Defrost heater 5 again.Therefore, can be below the flashing temperature of combustible refrigerant like the surface temperature that makes Defrost heater 5 explanatorily in the enforcement mode 4.Therefore, even, also can suppress catching fire of combustible refrigerant, can guarantee security just in case occur in the occasion of the combustible refrigerant leakage of flowing in the cooling tube 2.
In addition, refrigerator as in the enforcement mode 4 explanatorily, reduce height dimension by the cooler of the shared band Defrost heater of Defrost heater 5 and cooler 1.Therefore, the volume of cooling chamber 14 is diminished and can increase the article container volume of storeroom.
Like above explanation,, possess: the freezing cycle device of cooler with band Defrost heater of embodiment 1～4 according to embodiment 5,6; By inside have a freezing cycle device and an opening the main body 11 that constitutes of body of thermal insulating box; With the door 12a～12d that opens and closes opening.
Thus, effectively utilize the cooler 1 of band Defrost heater, the Defrosting Characteristics of 1a, improve defrosting efficiency, the power consumption in the time of can significantly reducing defrosting.
In addition, be the 6c of the portion that fits tightly, 6c1, the 6c2 through heat transfer plate 6 or the 6i of portion that is heated the structure that the heat of Defrost heater 5 is transmitted to cooling tube 2 and the structure of heating-cooling coil 2.Or with the structure of Defrost heater 5 direct heating-cooling coils 2.Therefore, the thermal capacitance quantitative change that needn't reduce Defrost heater 5 can be suppressed at the surface temperature of Defrost heater 5 below the flashing temperature of combustible refrigerant, can keep security.
In addition, compressible by the shared height dimension of cooler 1 and Defrost heater 5, can dwindle by the shared space of cooler 1 and Defrost heater 5.Therefore, the article container volume in the article storage apparatus can be more extensively guaranteed, the property held and the serviceability of article can be improved.
The radiant heat that in addition, can make Defrost heater 5 is in the wall reflection of cooling chamber 14 and be used for the heating of cooler 1.Therefore, can further improve defrosting efficiency, shorten the time of defrosting running, suppress power consumption.
Claims (5)
1. the cooler with Defrost heater is characterized in that,
Possess: by cold-producing medium internal flow and comprise a plurality of straight sections be connected with the shape ground that crawls above-mentioned a plurality of straight sections bent portion cooling tube and connect the cooler that a plurality of fins of above-mentioned cooling tube constitute; And the Defrost heater to utilize the interior convection effect of pipe that the mode of the inner above-mentioned flow of refrigerant of above-mentioned cooling tube is disposed,
But above-mentioned Defrost heater with above-mentioned a plurality of straight sections heat conduction and with the contacts side surfaces of the mode of above-mentioned a plurality of straight sections quadratures and above-mentioned cooler be fixed.
2. the cooler of band Defrost heater as claimed in claim 1 is characterized in that,
Above-mentioned Defrost heater comprises heater wire, coats the metal tube of above-mentioned heater wire and is filled in the insulating materials in the above-mentioned metal tube.
3. the cooler of band Defrost heater as claimed in claim 2 is characterized in that,
Be used for above-mentioned Defrost heater is fixed on the metal frame on the above-mentioned cooling tube being provided with on the outer peripheral face of above-mentioned metal tube.
4. the cooler of band Defrost heater as claimed in claim 3 is characterized in that,
Above-mentioned metal tube uses the metal material identical with above-mentioned cooling tube to be shaped with above-mentioned metal frame.
5. an article storage apparatus is characterized in that,
Possess: have freezing cycle device like the cooler of any one described band Defrost heater in the claim 1～4; The main body that has above-mentioned freezing cycle device in inside and constitute by the body of thermal insulating box of simultaneously having opened mouth; And the door that opens and closes above-mentioned opening.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-302681 | 2007-11-22 | ||
| JP2007302681A JP2009127926A (en) | 2007-11-22 | 2007-11-22 | Cooler with defrosting heater and article storage device |
| JP2007-302676 | 2007-11-22 | ||
| JP2007302676A JP2009127925A (en) | 2007-11-22 | 2007-11-22 | Cooler with defrosting heater and article storage device |
| JP2007-314326 | 2007-12-05 | ||
| JP2007314326A JP2009138993A (en) | 2007-12-05 | 2007-12-05 | Cooler with defrosting heater and article storage device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101763391A Division CN101441016B (en) | 2007-11-22 | 2008-11-20 | Cooler with defrosting heater and article storing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101839608A CN101839608A (en) | 2010-09-22 |
| CN101839608B true CN101839608B (en) | 2012-07-04 |
Family
ID=42743143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101672402A Expired - Fee Related CN101839608B (en) | 2007-11-22 | 2008-11-20 | Cooler with defrosting heater, and object storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101839608B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102620309B1 (en) * | 2016-10-04 | 2024-01-03 | 엘지전자 주식회사 | Rrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527013A (en) * | 2003-03-07 | 2004-09-08 | 日立家用电器公司 | Electric refrigerator |
| CN1740710A (en) * | 2004-08-25 | 2006-03-01 | 日立家用电器公司 | Refrigerator |
| CN1760609A (en) * | 2004-10-12 | 2006-04-19 | 日立家用电器公司 | Refrigerator |
| CN1853077A (en) * | 2003-10-30 | 2006-10-25 | 松下电器产业株式会社 | Refrigerator |
-
2008
- 2008-11-20 CN CN2010101672402A patent/CN101839608B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527013A (en) * | 2003-03-07 | 2004-09-08 | 日立家用电器公司 | Electric refrigerator |
| CN1853077A (en) * | 2003-10-30 | 2006-10-25 | 松下电器产业株式会社 | Refrigerator |
| CN1740710A (en) * | 2004-08-25 | 2006-03-01 | 日立家用电器公司 | Refrigerator |
| CN1760609A (en) * | 2004-10-12 | 2006-04-19 | 日立家用电器公司 | Refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101839608A (en) | 2010-09-22 |
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