CN101696841A

CN101696841A - Refrigerator door body

Info

Publication number: CN101696841A
Application number: CN200910192679A
Authority: CN
Inventors: 金凌; 何善樑; 李成武; 李鹏; 毛西建; 李书源
Original assignee: Hisense Kelon Electrical Holdings Co Ltd; Hisense Ronshen Guangdong Refrigerator Co Ltd
Current assignee: Hisense Home Appliances Group Co Ltd; Hisense Ronshen Guangdong Freezer Co Ltd; Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority date: 2009-09-25
Filing date: 2009-09-25
Publication date: 2010-04-21
Anticipated expiration: 2029-09-25
Also published as: CN101696841B

Abstract

The invention relates to the technical field of refrigerators of domestic appliances, in particular to a refrigerator door body which comprises an inner door liner (4), a foaming layer and a front door panel (2). The foaming layer is arranged between the inner door liner (4) and the front door panel (2), wherein the inner door liner (4) is provided with a plurality of horizontal grooves or flanges (41). In the invention, the grooves or flanges (41) which can extend and retract freely are arranged on the inner door liner (4), stress generated during the shrinkage distortion of the inner door liner (4) when the inner door liner is cooled can be cushioned effectively, thereby preventing the refrigerator door body from deforming. No door reinforced iron is used in the invention, thereby greatly reducing the material cost of the door body; and only the grooves or flanges (41) are added during the plastic molding of the inner door liner without changing the original processes and producing beats, thus the invention has the advantages of simple and easy implementation, labor saving and material saving.

Description

Refrigerator door

Technical field

The present invention relates to the technical field of refrigerator in the household electrical appliance, especially a kind of refrigerator door.

Background technology

Refrigerator door is generally formed the heat insulation foamed material of middle injection by parts such as door face board, door inner bag, upper end cover, bottom end covers.On the refrigerator of some gate bodies, exist the problem of door cold deformation.Require on low household freezer or the door body refrigerator (refrigerator) big, length for the temperature inside the box, this phenomenon is more outstanding.This door body deformability gently then influences outward appearance, heavy then between the Men Tiyu casing door envelope produce gap, have a strong impact on the heat-insulating property of refrigerator, the increase energy consumption of refrigerator.The analysis and the calculating of theoretical model show: Men Tiyue is big, and stress is also big more, and deformation is also just big more.

At present, refrigeration appliance enterprise comprises some external refrigeration manufacturers, mainly is by at the inner parts such as strengthening iron of placing of door body, utilizes the huge rigidity of these parts to overcome the distortion of a body when refrigeration.Such solution has increased bigger material cost, obviously is not preferred plan.

The formation mechanism of door body deformability is during refrigeration: the temperature difference of door body medial and lateral is bigger, interior cold outer heat; Inboard form freezing chamber, about temperature-25 ℃ with cabinets cavity; And the outside with environment temperature sometimes can be up to 40 ℃ about; Inboard because catch a cold with freezing chamber, door inner bag and close inboard part alveolar layer shrink deformation; The part alveolar layer in the outer door panel and the close outside because be heated with environment, and expands distortion.Temperature is a distribution that descends continuously from the door external surface to inner surface, because the temperature line coefficient of expansion of inner bag, alveolar layer is bigger, therefore, alveolar layer, inner bag deformation aggravate along with variation of temperature, and the stress that deformation produces is also bigger.The door body is under bigger endogenetic process and the evagination distortion of tortuous bow shape takes place.

According to above-mentioned deformation mechanism, Chinese patent application 200510121266.2 discloses a kind of refrigerator door and door making method, has proposed a kind of method that reduces the door cold deformation.The main points of this method are the alveolar layer of door body is separated or to be divided into polylith, the door body deformability that causes because of the contraction of foaming layer when eliminating refrigeration, thus deducted the inner use of strengthening iron of door body.But still there is following several respects deficiency in this technology:

(1) method that adopts alveolar layer to separate or cut apart prevents that the effect of door cold deformation is very not desirable.Find that through verification experimental verification the distortion of door body during refrigeration is not only the contraction because of alveolar layer, main causes owing to the door inner bag shrinks.Door inner bag system is processed through plastic uptake by plastic sheets such as ABS, HIPS, and its elastic modelling quantity is much larger than the elastic modelling quantity of the alveolar layer material of open structure, this one; The door inner bag is directly facing to the inner chamber of refrigerator, and its temperature that stands is more much lower than alveolar layer, this its two; These 2 the contraction distortion stress that determined the contraction distortion stress of door inner bag much larger than alveolar layer.The contraction of door inner bag is only the primary influence factor of influence door body deformability.

(2) with cutter heat insulation alveolar layer is cut apart cut-out,, only be useful on the door body of split foaming, on the door body of integral foam, then can't implement though its operating procedure is simple.And on present refrigerator door was made, integrated foaming process had almost completely replaced the split foam process.Therefore, heat insulation alveolar layer is cut apart the method for cut-out, lost the ample scope for abilities.

The not sticking division board that steeps is set in the door chamber separates the method for alveolar layer, operation is very difficult in the practice.The demarcation strip that in the door chamber, is provided with, the expansion of bubble material is flowed in the time of can hindering foaming; Otherwise the bubble material of motion can impact demarcation strip.Therefore, the layout of demarcation strip, fixing etc. have relatively high expectations complex process.Simultaneously, the Material Cost of the division board of sticking bubble is not low yet.

Summary of the invention

The technical problem to be solved in the present invention is to overcome the deficiency of above-mentioned technology and refrigerator door that a kind of distortion that can prevent to freeze is provided, and this refrigerator door deducts the use of strengthening iron, and is simultaneously simple to operate, easy to implement.

For solving the problems of the technologies described above, technical scheme of the present invention is: refrigerator door, comprise an inner bag, alveolar layer and door face board, and alveolar layer is between door inner bag and door face board, and described door inner bag is provided with some horizontal grooves or flange.

Described groove or flange extend to an inner bag opposite side from a side of door inner bag, and the step of rear opening inner bag.

Described groove or flange and alveolar layer contact position are provided with barrier paper, and with groove or flange and alveolar layer isolation, groove or flange can freely stretch with barrier paper.

Described barrier paper is provided with sealing paper with door inner bag four edge joint synapsis, and four limits of barrier paper are pasted with sealing paper and sealed, and prevents between foamed material access door inner bag and the barrier paper, plays the effect of freely stretching to guarantee groove or flange.

The present invention with respect to the beneficial effect of prior art is:

The present invention is provided with retractable groove or flange on inner bag, the stress that the contraction distortion when having cushioned the door inner bag effectively and catching a cold produces prevents the refrigerator door phenomenon that deforms, and cancellation door body is strengthened iron, greatly reduces the Material Cost of body.The present invention only needs to increase groove or flange when the inner bag plastics sucking moulding, need not to change original production technology, productive temp, and it is simple easy to implement, and saves human and material resources.

Description of drawings

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is the side schematic view and the partial enlarged drawing of refrigerator door of the present invention;

Fig. 2 is the side direction part sectioned view of refrigerator door of the present invention;

Fig. 3 is the door inner bag schematic diagram of band groove of the present invention or flange;

Fig. 4 is that door inner bag of the present invention is pasted the barrier paper schematic diagram;

Fig. 5 is that door inner bag of the present invention is pasted the barrier paper side cut away view.

The specific embodiment

Referring to Fig. 1, Fig. 2, refrigerator door is made up of upper end cover 1, door face board 2, bottom end cover 3, door inner bag 4 etc., and the middle bubble material that injects, bubble material form heat insulation alveolar layer 5 after the foaming slaking is solidified; The bubble material bonds together above-mentioned each part, forms a rigid unitary---refrigerator door.

Referring to Fig. 3, the position, upper, middle and lower of door inner bag 4 is provided with several grooves or flange 41.Groove or flange 41 extend to an inner bag 4 opposite sides from a side of door inner bag 4, and the step of rear opening inner bag 4.The concrete quantity of groove or flange 41 is decided by the size of refrigerator door; The degree of big its distortion of refrigerator door is also big, needed groove or the also corresponding increase of flange 41 quantity.

Referring to Fig. 2, Fig. 4, Fig. 5, in the inboard of door inner bag 4,, utilize barrier paper 6 in groove or flange 41 parts, alveolar layer 5 is carried out the part with door inner bag 4 isolate.Sealing paper 7 sticks on barrier paper 6 on the inner bag 4 and will seal all around, to prevent between bubble material access door inner bag 4 and the barrier paper 6.

Because barrier paper 6 is isolated groove or flange 41 with alveolar layer 5, groove or flange 41 can freely stretch, and when having guaranteed that door inner bag 4 is caught a cold contraction, its internal stress is reduced greatly, thereby has prevented that refrigerator door from deforming.Catch a cold when shrinking when door inner bag 4, groove or flange 41 will cushion the stress that contraction distortion produces effectively, prevent the refrigerator door phenomenon that deforms.

Refrigerator door of the present invention can be cancelled a body and strengthen iron, thereby reduces the material cost of door body greatly.

Claims

1. refrigerator door comprises an inner bag (4), alveolar layer (5) and door face board (2), and alveolar layer (5) is positioned between an inner bag (4) and the door face board (2), it is characterized in that described door inner bag (4) is provided with some horizontal grooves or flange (41).

2. refrigerator door according to claim 1 is characterized in that described groove or flange (41) extend to an inner bag (4) opposite side from a side of door inner bag (4), and the step of rear opening inner bag (4).

3. refrigerator door according to claim 1 and 2 is characterized in that described groove or flange (4) and alveolar layer (5) contact position are provided with barrier paper (6).

4. refrigerator door according to claim 3 is characterized in that described barrier paper (6) and door inner bag (4) four edge joint synapsis are provided with sealing paper (7).