CN102564030A - Detachable seamless refrigerator door sealing strip and manufacturing process thereof - Google Patents
Detachable seamless refrigerator door sealing strip and manufacturing process thereof Download PDFInfo
- Publication number
- CN102564030A CN102564030A CN2012100139782A CN201210013978A CN102564030A CN 102564030 A CN102564030 A CN 102564030A CN 2012100139782 A CN2012100139782 A CN 2012100139782A CN 201210013978 A CN201210013978 A CN 201210013978A CN 102564030 A CN102564030 A CN 102564030A
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- refrigerator door
- sealing
- edge
- strip
- urethane elastomer
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Abstract
The invention discloses a detachable seamless refrigerator door sealing strip, which is used for sealing a gap between a refrigerator door body and a box body. The sealing strip comprises a door sealing strip body consisting of four frame edges matched with the refrigerator door body, wherein the door sealing strip body is formed by seamless integral pouring vulcanization of a liquid polyurethane elastomer material; each frame edge comprises a convex wedge, a sealing heat preservation edge and a sealing pull-in piece; the convex wedge is used to be clamped into a groove on the edge of the refrigerator door body; the sealing heat preservation edge is used for sealing the gap between the refrigerator door body and the box body; and a magnetic strip is embedded inside the sealing pull-in piece, and the sealing pull-in piece is used for pulling the refrigerator door body in the box body. The invention also discloses a manufacturing process for the refrigerator door sealing strip. The sealing strip has high elasticity, tightness, heat preservation performance, heat resistance, cold resistance and collision resistance, plasticizer molecules are not moved, four corners of the door sealing strip are difficult to crack and damage, automated production can be realized, and a production process is energy-saving and environment-friendly.
Description
Technical field
The present invention relates to the refrigerator accessory, relate in particular to a kind of gasket that is used for slit sealing between refrigerator door and casing.
Background technology
Seal strip for refrigerator door is to be arranged to prevent the member that cold air leaks between refrigerator door and the casing.
The current refrigerator gasket adopts soft PVC (PVC) material to extrude operations such as strip gum cover, fixed length cutting, magnetic stripe installation and gum cover welding through extruder and is made, and its profile is a square frame shape.The cross section of strip gum cover is irregular different shaped as frame, and its top is provided with the protruding wedge that is used to snap in edge, refrigerator doors position groove along the gum cover length direction, and its inside is provided with a rectangle cavity and several special-shaped cavitys; The rectangle cavity is positioned at the upper outer of cross section, is used to place magnetic stripe, and other special-shaped cavity is vacant.
Contain a large amount of plasticizer in soft PVC (PVC) material, be prone to produce molecular migration and pollute the food in the refrigerator; The poor flexibility of PVC material, its gasket goods are subject to the external force effect and deform in the production process, thereby reduce sealing property; The cold resistance of PVC material is poor, and winter, easy hardening was followed the string, and causes sealing property to reduce; The poor heat resistance of PVC material, in the transportation of refrigerator finished product in summer, be prone to be heated and with the adhesion of refrigerator body inner bag.
In addition, existing magnetic stripe mounting process and gum cover welding procedure mainly rely on manually-operated, and automaticity is low, and four corner solder of gasket are in the use and ftracture because of the switch door knob hits easily, cause the interior cold air of case to leak.
Summary of the invention
To the problem that exists in the above-mentioned prior art; The object of the present invention is to provide the whole seal strip for refrigerator door of a kind of removable no seam; Its elasticity, sealing, heat insulating ability, hear resistance, cold resistance and anticollision performance are good, no plasticizer molecule migration, four corner's damages not easy to crack; Can realize automated production, the production process energy-conserving and environment-protective.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of removable no seam seal strip for refrigerator door; Comprise that said gasket body adopts the liquid urethane elastomer material to form its excellent spring through the integrated poured sulfuration of no seam by constituting the gasket body of square frame shape structure with four suitable edges of refrigerator door; Dimensional accuracy is high and not yielding, has improved the sealing property and the heat-insulating property of gasket; Said edge comprises protruding wedge, sealing insulation limit and sealing adhesive part; Said protruding wedge is positioned at edge top, and extends to form a square frame shape along its length direction, is used to snap in the refrigerator door edge groove, has realized the dismounting function of gasket; Said sealing insulation limit is positioned at the edge middle part, and extends to form a square frame shape along its length direction, is used to seal the slit between refrigerator door and casing, prevents that cold air from leaking; Said sealing adhesive part is positioned at the edge bottom, and its inside is embedded with magnetic stripe, and extends to form a square frame shape along the edge length direction, is used for refrigerator door is pull-in on casing, has realized the closing function of refrigerator doors.
Another object of the present invention provides the manufacture craft of removable no seam seal strip for refrigerator door, comprises the steps:
1. the working face of cleaning mold, particularly mould will be cleaned out, and is used to prevent the bonding of gasket finished product and mould with being coated with the last layer interleaving agent in the die cavity;
2. in the cover half of horizontal positioned, inject an amount of liquid urethane elastomer, make liquid urethane elastomer cover mold bottom, forms width identical with die cavity, have certain thickness square frame shape and seal adhesive part base;
3. inject an amount of liquid urethane elastomer that contains magnetic on the sealing of the square frame shape in the cover half adhesive part base; Form the square frame shape magnetic stripe embryo of a width less than sealing adhesive part base width; It is positioned at the middle part of the liquid urethane elastomer width that injects for the first time, and keeps mould to be in level; Or replace containing the liquid urethane elastomer of magnetic with the soft magnetic material of strip, according to the program of setting the soft magnetic material of strip is moved the assigned address that is placed in the cover half by manual work or machine;
4. in the cover half that injects the liquid urethane elastomer that contains magnetic, re-inject an amount of liquid urethane elastomer, and keep mould to be in level; Or in the cover half of having placed the soft magnetic material of strip, re-inject an amount of liquid urethane elastomer, and keep mould to be in level;
5. dynamic model is put into cover half slowly, make liquid urethane elastomer in the cover half in the pressure current downflow of dynamic model and be full of die cavity, form the embryo of a gasket finished product;
6. the mould behind the matched moulds is moved into baking moulding in the baking oven, take out deburring behind the gasket finished product, clear up the inner clout of cavity body of mould simultaneously and coat interleaving agent and be used for production next time; Be final products after the gasket deburring of adopting the soft magnetic material of strip to produce;
7. the gasket finished product after the deburring is positioned over the orientation of carrying out magnetic material on the magnet charger and magnetizes, after making it to obtain to have the magnetive attraction of certain orientation, promptly become final products.
The invention has the beneficial effects as follows: the elasticity of liquid urethane elastomer is high than PVC, and the sealing property and the heat-insulating property of its gasket are better; The cold resistance and the hear resistance of liquid urethane elastomer are good than PVC, and its gasket is not descended by the weather temperature can and hardening, and gasket can be because of hot environment and box liner adhesion in the summer refrigerator finished product transportation; No plasticizer molecule moves and the contaminated food phenomenon; Adopt integrated poured sulfidization molding technology, the anticollision performance of its gasket is good, has avoided four edge junctions to damage phenomenon because of long-term switch door knob hits the cracking that produces.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is the front view of the embodiment of the invention 1;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the embodiment of the invention 1 a sectional perspective view;
Fig. 4 is the embodiment of the invention 1 a prioritization scheme A cutaway view;
Fig. 5 is the embodiment of the invention 1 a prioritization scheme B cutaway view;
Fig. 6 is the embodiment of the invention 1 a prioritization scheme C cutaway view;
Fig. 7 is embodiment 2 cutaway views;
Fig. 8 is the sectional perspective view of the embodiment of the invention 2;
Fig. 9 is the prioritization scheme E cutaway view of the embodiment of the invention 2;
Figure 10 is the embodiment of the invention 3 cutaway views;
Figure 11 is the sectional perspective view of the embodiment of the invention 3;
Figure 12 is the embodiment of the invention 3 prioritization scheme F cutaway views;
Figure 13 is the embodiment of the invention 3 prioritization scheme G cutaway views.
Among the figure, 1-gasket body, the protruding wedge of 101-, 102-sealing insulation limit, 102a-sealing insulation horizontal edge, 102b-sealing insulation longitudinal edge, 103-sealing adhesive part, 104-U shape groove, 105-auxiliary seal bar, 106-auxiliary seal limit, 2-reinforcement, 3-magnetic stripe.
The specific embodiment
Embodiment 1:
As shown in Figure 1, gasket body 1 is that its four edge junctions are used to disperse impact stresses for the R angle that circular arc designs, and improve the anticollision performance of gasket by the square frame shape structure that constitutes with four suitable edges of refrigerator door.Gasket body 1 adopts the liquid urethane elastomer material to form through the integrated poured sulfuration of no seam, its excellent spring, and dimensional accuracy is high and not yielding, has improved the sealing property and the heat-insulating property of gasket.Like Fig. 2, shown in 3, each edge of gasket body 1 comprises protruding wedge 101, sealing insulation limit 102 and sealing adhesive part 103, and sealing adhesive part 103 inside are embedded with magnetic stripe 3.Protruding wedge 101 is positioned at edge top, and extends to form a square frame shape along its length direction, is used to snap in the refrigerator door edge groove, has realized the dismounting function of gasket; Sealing insulation limit 102 is positioned at the edge middle part; And extend to form a square frame shape along its length direction; Sealing insulation limit 102 is the I font, two ends respectively with protruding wedge 101 with seal adhesive part 103 and be connected (the connected mode here has multiple design, look the needs of different refrigerator doors and casing and decide); Be used to seal the slit between refrigerator door and casing, prevent that cold air from leaking; Sealing adhesive part 103 is positioned at the edge bottom, and extends to form a square frame shape along its length direction, is used for refrigerator door is pull-in on casing, has realized the closing function of refrigerator doors.The junction separation reinforcement 2 on sealing adhesive part 103 and sealing insulation limit 102 is used to keep relative position between the two, prevents to seal the adhesive part because of the sagging distortion of own wt after it is installed on refrigerator door.
Fig. 4 is the prioritization scheme A cutaway view of the embodiment of the invention 1; Establish U-lag 104 at protruding wedge 101 middle parts, the effect of U-lag is to be convenient to dismounting and to save material.Sealing adhesive part 103 inboards are provided with auxiliary seal bar 105 (auxiliary seal bar be designed with various ways, looking different refrigerator door needs and decide), are used to increase the adaptation between gasket and refrigerator body.
Fig. 5 and Fig. 6 are the prioritization scheme B and the prioritization scheme C cutaway views of present embodiment 1; They will seal insulation limit 102 and be designed to arcuation and obtuse angle shape on the basis of Fig. 4, to increase sealing insulation limit 102 elasticity tensions, be used for refrigerator damp impacts impulsive force at closing time.
Embodiment 2:
Like Fig. 7, shown in 8, sealing insulation limit 102 is designed to T-shaped in this example, and sealing insulation horizontal edge 102a wherein is connected with protruding wedge 101 bottoms, and connecing between the metallic plate that is used for the shield refrigerator door and door courage met, and seals to be incubated longitudinal edge 102b and to seal the adhesive part and be connected.Sealing insulation longitudinal edge 102b can be designed to arcuation or obtuse angle shape, is used for refrigerator damp impacts impulsive force at closing time.U-lag also can be established in protruding wedge 101 middle parts in this example.
Fig. 9 is the prioritization scheme E cutaway view of the embodiment of the invention 2; It is on the basis of Fig. 7; Increase an auxiliary seal limit 106 (auxiliary seal limit be designed with various ways, looking different refrigerator door needs and decide) in the inboard of sealing adhesive part 103 according to the design of refrigerator door.The refrigerator door that is used to fit forms the heat-insulating property of a cavity with the lever gear door strip of paper used for sealing.Other 26S Proteasome Structure and Functions of present embodiment and embodiment 1 are together.
Embodiment 3:
Like Figure 10, shown in 11; Sealing insulation limit 102 is designed to trisquare shape in this example; Wherein sealing insulation horizontal edge 102a is connected with protruding wedge 101 bottoms, and connecing between the metallic plate that is used for the shield refrigerator door and door courage met, and seals to be incubated longitudinal edge 102b and to seal adhesive part 103 and be connected.
Figure 12 and Figure 13 are the prioritization scheme F and the prioritization scheme G cutaway views of the embodiment of the invention 3.Sealing insulation longitudinal edge 102b can be designed to arcuation or obtuse angle shape, to increase sealing insulation limit 102 elasticity tensions, is used for refrigerator damp impacts impulsive force at closing time.U-lag is established at protruding wedge 101 middle parts.Other 26S Proteasome Structure and Functions of present embodiment and embodiment 1 are together.
In above-mentioned each embodiment, in the groove with protruding wedge embeddeding refrigerator door body edge during installation, refrigerator door relies on the magnetive attraction of magnetic stripe with the adhesive of Men Tiyu casing, realizes the sealing in slit between refrigerator door and casing.The door body of each item size of gasket and refrigerator and box sizes and distance between the two are suitable, just in time seal at the casing edge so that be installed on the refrigerator door, guarantee that the cold air in the refrigerator can not leak.
The present invention does not have the manufacturing process steps of seam seal strip for refrigerator door:
1. mould is divided into two parts, and the bottom is a cover half, and top is dynamic model; Elder generation is positioned over cover half on the workbench and keeps mould on a horizontal plane;
2. the working face of cleaning mold, particularly mould will be cleaned out, and is used to prevent the bonding of gasket finished product and mould with being coated with the last layer interleaving agent in the die cavity;
3. in the cover half of horizontal positioned, inject an amount of liquid urethane elastomer, make liquid urethane elastomer cover mold bottom, forms width identical with die cavity, have certain thickness square frame shape and seal adhesive part base;
4. inject an amount of liquid urethane elastomer that contains magnetic on the sealing of the square frame shape in the cover half adhesive part base; Form a width less than square frame shape magnetic stripe embryo less than sealing adhesive part base width; It is positioned at the middle part of the liquid urethane elastomer width that injects for the first time, and keeps mould to be in level;
4.1 or replace containing the liquid urethane elastomer of magnetic with the soft magnetic material of strip, according to the program of setting the soft magnetic material of strip is moved the assigned address that is placed in the cover half by manual work or machine;
5. in the cover half that injects the liquid urethane elastomer that contains magnetic, re-inject an amount of liquid urethane elastomer, and keep mould to be in level;
5.1 or in the cover half of having placed the soft magnetic material of strip, re-inject an amount of liquid urethane elastomer, and keep mould to be in level;
6. dynamic model is put into cover half slowly, make liquid urethane elastomer in the cover half in the pressure current downflow of dynamic model and be full of die cavity, form the embryo of a gasket finished product;
7. the mould behind the matched moulds is moved into baking moulding in the baking oven; Curing temperature is looked the liquid urethane elastomer that is adopted and is decided; Take out deburring behind the gasket finished product, clear up the inner clout of cavity body of mould simultaneously and coat interleaving agent and be used for production next time;
7.1 be final products after the gasket deburring of adopting the soft magnetic material of strip to produce;
8. the gasket finished product after the deburring is positioned over the orientation of carrying out magnetic material on the magnet charger and magnetizes, after making it to obtain to have the magnetive attraction of certain orientation, promptly become final products.
The above only is preferred embodiment of the present invention, is not that the present invention is done any type of restriction.Every foundation technology of the present invention and method essence all still belong in the scope of technology of the present invention and method scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (11)
1. removable no seam seal strip for refrigerator door; Comprise by constituting the gasket body of square frame shape structure with four suitable edges of refrigerator door, it is characterized in that: said gasket body adopts the liquid urethane elastomer material to form through the integrated poured sulfuration of no seam; Said edge comprises protruding wedge, sealing insulation limit and sealing adhesive part; Said protruding wedge is positioned at edge top, and extends to form a square frame shape along its length direction; Said sealing insulation limit is positioned at the edge middle part, and extends to form a square frame shape along its length direction; Said sealing adhesive part is positioned at the edge bottom, and its inside is embedded with magnetic stripe, and extends to form a square frame shape along the edge length direction.
2. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: said sealing insulation limit is the I font, and two ends are connected with sealing adhesive part with protruding wedge respectively.
3. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: said sealing adhesive part is provided with several reinforcements with the junction on sealing insulation limit.
4. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: said sealing insulation limit is arcuation or shape in obtuse angle, two ends respectively with protruding wedge with seal the adhesive part and be connected.
5. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: said sealing insulation limit is trisquare shape or T-shaped, and horizontal edge wherein is connected with protruding wedge, and longitudinal edge is connected with sealing adhesive part.
6. removable no seam seal strip for refrigerator door according to claim 5 is characterized in that: said longitudinal edge is arcuation or shape in obtuse angle.
7. according to claim 1 and the described removable no seam seal strip for refrigerator door of claim 5, it is characterized in that: said sealing adhesive part inboard is provided with the auxiliary seal limit or/and the auxiliary seal bar.
8. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: the edge of said gasket body is the R angle for four jiaos.
9. removable no seam seal strip for refrigerator door according to claim 1 is characterized in that: said magnetic stripe is polyurethane elastomer or the soft magnetic material of strip that contains magnetive attraction.
10. according to claim 1-9 each described removable no seam seal strip for refrigerator door, it is characterized in that: U-lag is established at said protruding wedge middle part.
11. make the technology of the described removable no seam seal strip for refrigerator door of claim 1, it is characterized in that: this technology comprises the steps:
1 cleaning mold, and be used to prevent the bonding of gasket finished product and mould with being coated with the last layer interleaving agent in the die cavity;
2 inject liquid urethane elastomer in the cover half of horizontal positioned, make liquid urethane elastomer cover mold bottom, form width identical with die cavity, have a certain thickness square frame shape sealing adhesive part base;
Inject the liquid urethane elastomer that contains magnetic on 3 the square frame shape sealing adhesive part bases in cover half; Form the square frame shape magnetic stripe embryo of a width less than sealing adhesive part base width; It is positioned at the middle part of the liquid urethane elastomer width that injects for the first time, and keeps mould to be in level; Or replace containing the liquid urethane elastomer of magnetic with the soft magnetic material of strip;
4 re-inject liquid urethane elastomer in the cover half that injects the liquid urethane elastomer that contains magnetic, and keep mould to be in level; Or in the cover half of having placed the soft magnetic material of strip, re-inject liquid urethane elastomer, and keep mould to be in level;
5 put into cover half slowly with dynamic model, make liquid urethane elastomer in the cover half in the pressure current downflow of dynamic model and be full of die cavity, form the embryo of a gasket finished product;
6 move into baking moulding in the baking oven with the mould behind the matched moulds, take out deburring behind the gasket finished product, clear up the inner clout of cavity body of mould simultaneously and coat interleaving agent to be used for production next time; Be final products after the gasket deburring of adopting the soft magnetic material of strip to produce;
7 are positioned over the orientation of carrying out magnetic material on the magnet charger with the gasket finished product after the deburring magnetizes, and after making it to obtain to have the magnetive attraction of certain orientation, promptly becomes final products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210013978.2A CN102564030B (en) | 2011-11-28 | 2012-01-17 | Detachable seamless refrigerator door sealing strip and manufacturing process thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385123.8 | 2011-11-28 | ||
| CN201110385123 | 2011-11-28 | ||
| CN201210013978.2A CN102564030B (en) | 2011-11-28 | 2012-01-17 | Detachable seamless refrigerator door sealing strip and manufacturing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102564030A true CN102564030A (en) | 2012-07-11 |
| CN102564030B CN102564030B (en) | 2014-04-30 |
Family
ID=46410130
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210013978.2A Expired - Fee Related CN102564030B (en) | 2011-11-28 | 2012-01-17 | Detachable seamless refrigerator door sealing strip and manufacturing process thereof |
| CN201220020634XU Expired - Lifetime CN202532806U (en) | 2011-11-28 | 2012-01-17 | Detachable seamless refrigerator door seal |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220020634XU Expired - Lifetime CN202532806U (en) | 2011-11-28 | 2012-01-17 | Detachable seamless refrigerator door seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102564030B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441478A (en) * | 2014-11-10 | 2015-03-25 | 桐乡市佳盛塑料制品有限公司 | Novel door stopper and injection mold thereof |
| CN105486012A (en) * | 2015-12-30 | 2016-04-13 | 合肥华凌股份有限公司 | Door seal structure and refrigerator |
| JP2017044423A (en) * | 2015-08-27 | 2017-03-02 | シャープ株式会社 | Cooling storage unit |
| CN108759235A (en) * | 2018-07-10 | 2018-11-06 | 深圳市猎搜有限公司 | A kind of low-noise refrigerator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564030B (en) * | 2011-11-28 | 2014-04-30 | 徐之元 | Detachable seamless refrigerator door sealing strip and manufacturing process thereof |
| CN113739492A (en) * | 2021-08-26 | 2021-12-03 | 安徽康佳同创电器有限公司 | Refrigerator door and refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9103087U1 (en) * | 1990-03-23 | 1991-06-13 | Whirlpool International B.V., Veldhoven, Nl | |
| CN1235665A (en) * | 1996-10-30 | 1999-11-17 | 松下冷机株式会社 | Refrigerator door |
| CN101323157A (en) * | 2008-07-14 | 2008-12-17 | 东莞市新志密封技术有限公司 | Method for producing sealing ring |
| CN201672754U (en) * | 2010-04-13 | 2010-12-15 | 浙江华美冰箱有限公司 | Sealing structure of refrigerator door |
| CN202532806U (en) * | 2011-11-28 | 2012-11-14 | 徐之元 | Detachable seamless refrigerator door seal |
-
2012
- 2012-01-17 CN CN201210013978.2A patent/CN102564030B/en not_active Expired - Fee Related
- 2012-01-17 CN CN201220020634XU patent/CN202532806U/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9103087U1 (en) * | 1990-03-23 | 1991-06-13 | Whirlpool International B.V., Veldhoven, Nl | |
| CN1235665A (en) * | 1996-10-30 | 1999-11-17 | 松下冷机株式会社 | Refrigerator door |
| CN101323157A (en) * | 2008-07-14 | 2008-12-17 | 东莞市新志密封技术有限公司 | Method for producing sealing ring |
| CN201672754U (en) * | 2010-04-13 | 2010-12-15 | 浙江华美冰箱有限公司 | Sealing structure of refrigerator door |
| CN202532806U (en) * | 2011-11-28 | 2012-11-14 | 徐之元 | Detachable seamless refrigerator door seal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441478A (en) * | 2014-11-10 | 2015-03-25 | 桐乡市佳盛塑料制品有限公司 | Novel door stopper and injection mold thereof |
| JP2017044423A (en) * | 2015-08-27 | 2017-03-02 | シャープ株式会社 | Cooling storage unit |
| CN105486012A (en) * | 2015-12-30 | 2016-04-13 | 合肥华凌股份有限公司 | Door seal structure and refrigerator |
| CN108759235A (en) * | 2018-07-10 | 2018-11-06 | 深圳市猎搜有限公司 | A kind of low-noise refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102564030B (en) | 2014-04-30 |
| CN202532806U (en) | 2012-11-14 |
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Granted publication date: 20140430 Termination date: 20180117 |