CN104290235B - The casing of a kind of refrigerator or chamber door preparation method - Google Patents
The casing of a kind of refrigerator or chamber door preparation method Download PDFInfo
- Publication number
- CN104290235B CN104290235B CN201310294003.6A CN201310294003A CN104290235B CN 104290235 B CN104290235 B CN 104290235B CN 201310294003 A CN201310294003 A CN 201310294003A CN 104290235 B CN104290235 B CN 104290235B
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- CN
- China
- Prior art keywords
- chamber door
- confined space
- refrigerator
- shell
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- GTACSIONMHMRPD-UHFFFAOYSA-N 2-[4-[2-(benzenesulfonamido)ethylsulfanyl]-2,6-difluorophenoxy]acetamide Chemical compound C1=C(F)C(OCC(=O)N)=C(F)C=C1SCCNS(=O)(=O)C1=CC=CC=C1 GTACSIONMHMRPD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 101710130081 Aspergillopepsin-1 Proteins 0.000 claims abstract description 10
- 102100031007 Cytosolic non-specific dipeptidase Human genes 0.000 claims abstract description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 10
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- 229920005862 polyol Polymers 0.000 claims abstract description 10
- 150000003077 polyols Chemical class 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 7
- 239000011496 polyurethane foam Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010000269 abscess Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Landscapes
- Refrigerator Housings (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses casing or the chamber door preparation method of a kind of refrigerator, it passes sequentially through the processing steps such as preheating, evacuation, pressurize material feeding, pressurize foaming and air cooling and completes the casing to refrigerator or prepared by chamber door；Effect due to negative pressure, when flowing in cabinet shell or chamber door shell after polyether polyol, PEPA, Pentamethylene. and isocyanates mix, during foaming, produced microbubble can be discharged in time and rapidly, and then avoid micro-bubble growth to expand produced drag effect, accelerate polyurethane foam speed and improve the thermal and insulating performance of refrigerator.
Description
Technical field
The present invention relates to refrigerator art, particularly relate to casing or the chamber door preparation method of a kind of refrigerator.
Background technology
As a kind of general household electrical appliance, refrigerator has been widely used in daily life, and wherein, refrigerator includes casing, chamber door and corresponding refrigeration system.For casing and chamber door, for ensureing good effect of heat insulation, the inside of casing housing and chamber door housing is filled with polyurethane thermal insulation layer.
In refrigerator process of manufacture, polyurethane foam speed is the fastest, and abscess is the finest and the smoothest, and the heat conductivity of polyurethane thermal insulation layer is the lowest, i.e. the effect of heat insulation of polyurethane thermal insulation layer is the best；But, in actual process of manufacture, owing to during polyurethane foam, produced micro-bubble growth expands and can produce certain drag effect by convection cell, polyurethane is difficult to be uniformly distributed and affect bigger on the effect of heat insulation of polyurethane thermal insulation layer.
Summary of the invention
Present invention aims to the deficiencies in the prior art and casing or the chamber door preparation method of a kind of refrigerator is provided, the casing of this refrigerator or chamber door preparation method can be effectively improved polyurethane foam speed and reduce drag effects when micro-bubble growth expands, and then improves the thermal and insulating performance of refrigerator.
For reaching above-mentioned purpose, the present invention is achieved through the following technical solutions.
The casing of a kind of refrigerator or chamber door preparation method, include following processing step, particularly as follows:
A, the cabinet shell assembled or chamber door shell are positioned in a confined space；
B, by circulating fan toward being cyclically passed through the dry air of 80 ~ 100 DEG C in above-mentioned confined space, the time that is passed through of dry air is 20 ~ 30s；
After c, the time that is passed through of air to be dried end, above-mentioned circulating fan stops immediately, and vacuum pump starts immediately and above-mentioned confined space is carried out evacuation process, and after 3 ~ 5s, the atmospheric pressure value in above-mentioned confined space reaches-1.2 ~-0.1Mpa；
D, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, expanded material after the mixing head mixed at high speed of polyurethane foaming machine is injected in cabinet shell or chamber door shell rapidly, wherein, expanded material includes 20% ~ 30% polyether polyol, 20% ~ 30% PEPA, 5% ~ 8% Pentamethylene. and 40% ~ 50% isocyanates；
E, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, have been injected into cabinet shell or chamber door shell pressurize foaming 2-3min in above-mentioned confined space of expanded material；
F, after pressurize foamed time ends, by complete cabinet shell that foaming processes or chamber door shell takes out in confined space also air cooling to room temperature.
Wherein, described expanded material includes 25% polyether polyol, 25% PEPA, 5% Pentamethylene. and 45% isocyanates.
The invention have the benefit that casing or the chamber door preparation method of a kind of refrigerator of the present invention, it passes sequentially through the processing steps such as preheating, evacuation, pressurize material feeding, pressurize foaming and air cooling and completes the casing to refrigerator or prepared by chamber door；Effect due to negative pressure, when flowing in cabinet shell or chamber door shell after polyether polyol, PEPA, Pentamethylene. and isocyanates mix, during foaming, produced microbubble can be discharged in time and rapidly, and then avoid micro-bubble growth to expand produced drag effect, accelerate polyurethane foam speed and improve the thermal and insulating performance of refrigerator.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be described.
Embodiment one, the casing of a kind of refrigerator or chamber door preparation method, include following processing step, particularly as follows:
A, the cabinet shell assembled or chamber door shell are positioned in a confined space；
B, by circulating fan toward being cyclically passed through the dry air of 80 ~ 100 DEG C in above-mentioned confined space, the time that is passed through of dry air is 20 ~ 30s；
After c, the time that is passed through of air to be dried end, above-mentioned circulating fan stops immediately, and vacuum pump starts immediately and above-mentioned confined space is carried out evacuation process, and after 3 ~ 5s, the atmospheric pressure value in above-mentioned confined space reaches-1.2 ~-0.1Mpa；
D, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, expanded material after the mixing head mixed at high speed of polyurethane foaming machine is injected in cabinet shell or chamber door shell rapidly, wherein, expanded material includes 25% polyether polyol, 25% PEPA, 5% Pentamethylene. and 45% isocyanates；
E, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, have been injected into cabinet shell or chamber door shell pressurize foaming 2-3min in above-mentioned confined space of expanded material；
F, after pressurize foamed time ends, by complete cabinet shell that foaming processes or chamber door shell takes out in confined space also air cooling to room temperature.
The casing of the refrigerator of the present embodiment one or chamber door preparation method pass sequentially through the processing steps such as preheating, evacuation, pressurize material feeding, pressurize foaming and air cooling and complete the casing to refrigerator or prepared by chamber door；Effect due to negative pressure, when flowing in cabinet shell or chamber door shell after polyether polyol, PEPA, Pentamethylene. and isocyanates mix, during foaming, produced microbubble can be discharged in time and rapidly, and then avoid micro-bubble growth to expand produced drag effect, accelerate polyurethane foam speed and improve the thermal and insulating performance of refrigerator.
Embodiment two, the casing of a kind of refrigerator or chamber door preparation method, include following processing step, particularly as follows:
A, the cabinet shell assembled or chamber door shell are positioned in a confined space；
B, by circulating fan toward being cyclically passed through the dry air of 80 ~ 100 DEG C in above-mentioned confined space, the time that is passed through of dry air is 20 ~ 30s；
After c, the time that is passed through of air to be dried end, above-mentioned circulating fan stops immediately, and vacuum pump starts immediately and above-mentioned confined space is carried out evacuation process, and after 3 ~ 5s, the atmospheric pressure value in above-mentioned confined space reaches-1.2 ~-0.1Mpa；
D, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, expanded material after the mixing head mixed at high speed of polyurethane foaming machine is injected in cabinet shell or chamber door shell rapidly, wherein, expanded material includes 24% polyether polyol, 24% PEPA, 8% Pentamethylene. and 44% isocyanates；
E, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, have been injected into cabinet shell or chamber door shell pressurize foaming 2-3min in above-mentioned confined space of expanded material；
F, after pressurize foamed time ends, by complete cabinet shell that foaming processes or chamber door shell takes out in confined space also air cooling to room temperature.
The casing of the refrigerator of the present embodiment two or chamber door preparation method pass sequentially through the processing steps such as preheating, evacuation, pressurize material feeding, pressurize foaming and air cooling and complete the casing to refrigerator or prepared by chamber door；Effect due to negative pressure, when flowing in cabinet shell or chamber door shell after polyether polyol, PEPA, Pentamethylene. and isocyanates mix, during foaming, produced microbubble can be discharged in time and rapidly, and then avoid micro-bubble growth to expand produced drag effect, accelerate polyurethane foam speed and improve the thermal and insulating performance of refrigerator.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the thought of the present invention, the most all will change, and this specification content should not be construed as limitation of the present invention.
Claims (2)
1. the casing of a refrigerator or chamber door preparation method, it is characterised in that include following processing step, particularly as follows:
A, the cabinet shell assembled or chamber door shell are positioned in a confined space；
B, by circulating fan toward being cyclically passed through the dry air of 80 ~ 100 DEG C in above-mentioned confined space, the time that is passed through of dry air is 20 ~ 30s；
After c, the time that is passed through of air to be dried end, above-mentioned circulating fan stops immediately, and vacuum pump starts immediately and above-mentioned confined space is carried out evacuation process, and after 3 ~ 5s, the atmospheric pressure value in above-mentioned confined space reaches-1.2 ~-0.1Mpa；
D, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, expanded material after the mixing head mixed at high speed of polyurethane foaming machine is injected in cabinet shell or chamber door shell rapidly, wherein, expanded material includes 20% ~ 30% polyether polyol, 20% ~ 30% PEPA, 5% ~ 8% Pentamethylene. and 40% ~ 50% isocyanates；
E, maintain the atmospheric pressure value in above-mentioned confined space in the range of-1.2 ~-0.1Mpa, have been injected into cabinet shell or chamber door shell pressurize foaming 2-3min in above-mentioned confined space of expanded material；
F, after pressurize foamed time ends, by complete cabinet shell that foaming processes or chamber door shell takes out in confined space also air cooling to room temperature.
The casing of a kind of refrigerator the most according to claim 1 or chamber door preparation method, it is characterised in that: described expanded material includes 25% polyether polyol, 25% PEPA, 5% Pentamethylene. and 45% isocyanates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294003.6A CN104290235B (en) | 2013-07-15 | 2013-07-15 | The casing of a kind of refrigerator or chamber door preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294003.6A CN104290235B (en) | 2013-07-15 | 2013-07-15 | The casing of a kind of refrigerator or chamber door preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104290235A CN104290235A (en) | 2015-01-21 |
| CN104290235B true CN104290235B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310294003.6A Active CN104290235B (en) | 2013-07-15 | 2013-07-15 | The casing of a kind of refrigerator or chamber door preparation method |
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| CN (1) | CN104290235B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563725B (en) * | 2016-02-01 | 2017-11-03 | 安徽省万爱电器科技有限公司 | A kind of small-sized simple gate refrigerator foam technique |
| CN108375269A (en) * | 2018-04-02 | 2018-08-07 | 合肥美菱股份有限公司 | A kind of refrigerator door and its manufacturing process |
| CN110305282A (en) * | 2019-07-04 | 2019-10-08 | 长虹美菱股份有限公司 | A kind of heat-insulated layer formula and foam process of negative pressure foamed refrigerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979233A (en) * | 2010-10-18 | 2011-02-23 | 合肥美菱股份有限公司 | Process for producing negative pressure foamed refrigerator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100314431B1 (en) * | 1999-04-23 | 2001-11-15 | 구자홍 | the manufacture method of vaccum insulation material core |
| CN101474842B (en) * | 2009-01-24 | 2010-10-06 | 南京红宝丽股份有限公司 | Method for improving filling property of rigid polyurethane foam plastics |
| WO2012099379A2 (en) * | 2011-01-17 | 2012-07-26 | 주식회사 우레아텍 | Apparatus and method for vacuum foaming a refrigerator cabinet |
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- 2013-07-15 CN CN201310294003.6A patent/CN104290235B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979233A (en) * | 2010-10-18 | 2011-02-23 | 合肥美菱股份有限公司 | Process for producing negative pressure foamed refrigerator |
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| CN104290235A (en) | 2015-01-21 |
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Effective date of registration: 20231013 Address after: 315300 Xinpu town Yang Long Cun, Cixi City, Ningbo City, Zhejiang Province Patentee after: CHINA FEILONG HOME APPLIANCE CROUP Co.,Ltd. Address before: 315315 Cixi Economic Development Zone (Hangzhou Bay New Area), Ningbo City, Zhejiang Province, North of Binhai Third Road and West of Xingci Fourth Road Patentee before: Zhejiang Ripu Electronic Science and Technology Co.,Ltd. |