CN102259404A - Injection molding equipment and injection molding method for heat insulation layer of water heater - Google Patents
Injection molding equipment and injection molding method for heat insulation layer of water heater Download PDFInfo
- Publication number
- CN102259404A CN102259404A CN2011101542032A CN201110154203A CN102259404A CN 102259404 A CN102259404 A CN 102259404A CN 2011101542032 A CN2011101542032 A CN 2011101542032A CN 201110154203 A CN201110154203 A CN 201110154203A CN 102259404 A CN102259404 A CN 102259404A
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- water heater
- shell
- alignment pin
- inner bag
- injection
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000001746 injection moulding Methods 0.000 title claims abstract description 45
- 238000009413 insulation Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000006261 foam material Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 2
- 230000035611 feeding Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 206010000269 abscess Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides injection molding equipment for a heat-insulating layer of a water heater, which comprises a positioning frame and a positioning pin group, wherein the positioning frame is used for positioning a shell of the water heater; the positioning pin group is connected to the positioning frame and detachably connected with a water pipe opening on the inner container of the water heater and an outer wall hanger pin hole; the positioning frame and the positioning pin set fix the axes of the shell and the cylinder of the inner container in the horizontal direction. In addition, the invention also provides a method for injection molding by using the injection molding equipment, which comprises the following steps: step 1, fixing the axes of a shell of a water heater and a cylinder of an inner container in a horizontal direction through a positioning frame and a positioning pin group; and 2, filling a foaming material into a space between the shell and the inner container of the water heater from a material injection port of the shell by using a material injection device to form a heat insulation layer of the water heater. By adopting the injection molding equipment and the injection molding method, the heat preservation balance of the heat preservation layer can be realized, and the heat loss is effectively reduced.
Description
Technical field
The present invention relates to household appliance technical field, relate in particular to a kind of injection-moulding device and injection moulding process of water heater heat-insulation layer.
Background technology
In the production process of electric heater, in order to reduce thermal loss, improve the heat-insulating property of product, adopt the mode of filled polyurethane foamed material between the shell of water heater and inner bag usually, the hot water in the inner bag is incubated.In the prior art, the Shooting Technique of employing is, the cylindrical shell of water heater is vertically placed, the flange port that makes outer cover of water heater up, and filling-foam material from here.For example in Chinese patent 200420088706.X, a kind of electric heater is disclosed, include shell 1, inner bag 2 assemblies, heating tube component, control element, pipe fitting and be located at shell 1 and inner bag 2 between heat-insulation layer 3, wherein, inner bag 2 departs from the geometric center biased downward certain distance of shell 1 to be fixed, and eccentric throw is 4mm to 12mm.This patent is improved the pyroconductivity of heat-insulation layer by making inner bag biased downward certain distance.
Yet,, be the density size of foamed material in fact to the bigger factor of pyroconductivity influence of heat-insulation layer.The thermal conductivity of polyurethane foam material and the relation curve of density, as shown in fig. 1.When in the 33kg/m3 left and right sides, the thermal conductivity of foamed material is minimum, and no matter the further increase of density still reduces, and it is big that thermal conductivity all can become.This be because, when pore density was big, gas was difficult for diffusion, density is big more, the aperture is more little, micropore and micropore are close to, heat transfer accelerates, the thermal conductivity increase; And density is when reducing, and the open-celled structure ratio increases, and causes thermal conductivity to increase.
The size of thermal conductivity directly influences the heat-insulating property of product.According to the curved line relation of above-mentioned foaming density and thermal conductivity, in the material feeding process, it is very crucial that the density of control foamed material just seems.And in the material feeding process, the stroke that foamed material flows is short more, and mainly is that mobile stroke on the above-below direction is short more, and the excursion of its density is more little, the easy more control of the size of density.In the prior art cylindrical shell of water heater is vertically placed, the mobile stroke of foamed material on above-below direction be 1M nearly, is drawn longly more to the top abscess more, and the abscess distortion is big more.The result who causes is that along the above-below direction of material feeding, the foamed material density of bottom approximately is 40kg/m
3, the foamed material density at middle part approximately is 34kg/m
3, and the foamed material density on top approximately is 30kg/m
3, the excursion of density is bigger.When the on-hook of machine horizontal type, at same horizontal level, though water temperature is identical, density and thermal conductivity are widely different, cause thermal loss inhomogeneous, and final heat-insulating property descends.
Therefore, need provide a kind of new heat-insulation layer injection-moulding device and injection moulding process, to overcome defective of the prior art.
Summary of the invention
At the problem that exists in the correlation technique, the object of the present invention is to provide a kind of injection-moulding device and injection moulding process of water heater heat-insulation layer, to improve the heat insulation effect of water heater heat-insulation layer in the prior art.
For achieving the above object, the invention provides a kind of injection-moulding device of water heater heat-insulation layer, comprise the locating rack that is used for the shell of water heater location, and be used for the alignment pin group in the cavity that inner bag with water heater is positioned at shell; The alignment pin group is connected on the locating rack, and removably is connected with exterior wall hanger pin-and-hole with hose nozzle on the water heater liner; Locating rack and alignment pin group are fixing in the horizontal direction with the axis of the cylindrical shell of shell and inner bag.
Preferably, locating rack comprises the top cover that along continuous straight runs extends, and perpendicular to the sidewall of top cover; Wherein, the alignment pin group comprise with water heater liner on first alignment pin that removably is connected of exterior wall hanger, first alignment pin is connected on the top cover of locating rack; The alignment pin group also comprise with water heater liner on second alignment pin that removably is connected of hose nozzle, second alignment pin is connected on the sidewall of locating rack.
Preferably, second alignment pin has two, respectively with the inner bag of water heater on water inlet pipe mouth and effluent pipe mouth plug or threaded engagement; First alignment pin has two, respectively with the inner bag of water heater on two exterior wall hangers plugs or threaded engagement.
Preferably, the top cover of locating rack is a demountable structure.
Preferably, injection-moulding device also comprises the material injecting device of filling-foam material in the space between shell and inner bag; The sprue of the described water heater that matches with material injecting device (511) is opened in behind the extension wall of shell on the plate.
Preferably, the quantity of sprue is more than two.
On the other hand, the present invention also provides a kind of method that above-mentioned injection-moulding device carries out injection moulding of using, and may further comprise the steps:
Preferably, step 1 further comprises:
Step 1.1 is fixed on the shell of water heater on the locating rack, and with plate behind the extension wall of shell towards the top;
Step 1.2 is pulled down and is hung plate behind the wall, inner bag is placed in the cavity of shell, makes exterior wall hanger on the inner bag towards the top, and the water inlet pipe mouth on the inner bag of second alignment pin and water heater is connected with effluent pipe mouth;
Step 1.3, will hang wall after plate be installed on the shell, the top cover of locating rack is installed in the top that hangs plate behind the wall;
Step 1.4 is connected the exterior wall hanger on the inner bag with first alignment pin.
Preferably, step 2 further comprises, from the material feeding simultaneously of plural sprue.
Preferably, foamed material is a polyurethane material.
Than prior art, the invention has the beneficial effects as follows:
(1) horizontal type material feeding mode of the present invention, reduced the stroke that foamed material flows, the mobile difference in height of foamed material is by original nearly 1M, be reduced to below the 0.3M-0.4M (difference according to the inner bag diameter changes), density range along the position up and down of foamed material injection direction by 30-40kg/m3 of the prior art, is improved as 30-35kg/m3, reduce the excursion of density, made each position all approach best thermal conductivity factor.And because on same horizontal level, the thermal conductivity of the position heat-insulation layer that water temperature is identical is more approaching, therefore insulation is balanced more, can effectively reduce thermal losses;
(2) injection-moulding device of the present invention is located the positioning action of totally four keepers by water pipe location and exterior wall hanger, strengthened the fixed-site between shell and the inner bag, guarantee that inner bag is in position placed in the middle all the time in the material feeding process, occurrence positions off-set phenomenon not, can further improve the injection moulding effect, promote the heat-insulating property of heat-insulation layer.
Description of drawings
Fig. 1 is the relation curve of the thermal conductivity and the density of foamed material;
Fig. 2 is the stereogram during from the top view of injection-moulding device of the present invention;
Fig. 3 is the vertical view of injection-moulding device of the present invention, and first alignment pin is shown;
Fig. 4 is along the profile of A-A line among Fig. 3;
Fig. 5 is the partial enlarged drawing of I portion among Fig. 4;
Fig. 6 is the front view of injection-moulding device of the present invention, and second alignment pin is shown;
Fig. 7 is along the profile of C-C line among Fig. 6;
Fig. 8 is the partial enlarged drawing of II portion among Fig. 7;
Fig. 9 is the stereogram after fixing with the shell of water heater and inner bag, the operating mode when plate behind the extension wall of not installing shell is shown;
Figure 10 is the stereogram after fixing with the shell of water heater and inner bag, the operating mode when plate behind the extension wall of installing shell is shown;
Figure 11 is the flow chart of injection moulding process of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described.
When the heat-insulation layer of injection heat hydrophone, at first the shell and the inner bag of water heater should be located, but make the space length that forms a filling-foam material between the two, and make both in the material feeding process, remain the fixing of relative position.According to prior art, plate 51 is set to demountable structure usually behind the extension wall of outer cover of water heater 5, as Fig. 9 and shown in Figure 10.That is, will hang when plate 51 disassembles behind the wall, on shell 5, form one uncovered, can realize inner bag 7 is inserted in the shell 5.And plate 51 positions are corresponding behind the exterior wall hanger 71 of water heater liner 7 and the extension wall of shell 5.When water heater during in the installation site, hang wall after plate 51 fixedly connected with metope with exterior wall hanger 71, be on the rear wall of water heater, hose nozzle then is in the bottom of water heater.Therefore, hang the plane at plate 51 places behind the wall and the plane at exterior wall hanger 71 places, with the plane at hose nozzle place be orthogonal.
Referring to Fig. 2, the invention provides a kind of injection-moulding device of water heater heat-insulation layer, comprise locating rack 1, and be connected the alignment pin group 3 on the locating rack 1.Locating rack 1 is used for shell 5 location with water heater, and alignment pin group 3 is used for the inner bag 7 of water heater is positioned in the cavity of shell 5.Alignment pin group 3 is connected on the locating rack 1, by with water heater liner 7 on hose nozzle and the pin-and-hole on the exterior wall hanger 71 match, realize location to water heater liner 7.Between hose nozzle on alignment pin group 3 and the inner bag 7 and exterior wall hanger 71 pin-and-holes is dismountable annexation.Further, alignment pin group 3 comprise with water heater liner 7 on first alignment pin 31 that removably is connected of exterior wall hanger 71, and second alignment pin 33 that removably is connected with hose nozzle on the water heater liner 7.
According to embodiments of the invention,, that the axis of the cylindrical shell of the shell 5 of water heater and inner bag 7 is fixing in the horizontal direction by the positioning action of locating rack 1, first alignment pin 31 and second alignment pin 33.To shown in Figure 10, locating rack 1 comprises the top cover 11 that along continuous straight runs extends as Fig. 3, and perpendicular to the sidewall 13 of top cover 11.Wherein, first alignment pin 31 is connected on the top cover 11 of locating rack 1, as shown in Figure 3; Second alignment pin 33 is connected on the sidewall 13 of locating rack 1, as shown in Figure 6.During fixed housing 5, will hang behind the wall plate 51 towards the top cover 11 of locating rack 1; Fixedly during inner bag, exterior wall hanger 71 is connected with first alignment pin 31, the hose nozzle of water heater is connected with second alignment pin 33.So, the axis of the cylindrical shell of the shell 5 of water heater and inner bag 7 is fixed in the horizontal direction.
According to embodiments of the invention, the top cover 11 of locating rack 1 is a demountable structure, to guarantee that shell 5 can be placed in the locating rack 1 smoothly.Certainly, top cover 11 also can be set to the door body formula structure to the outer sideway swivel of locating rack 1.
In addition, injection-moulding device of the present invention also comprises the material injecting device of filling-foam material in the space between shell 5 and inner bag 7.On the shell of water heater, offer the sprue 511 that matches with material injecting device.Sprue 511 is opened in to be hung behind the wall on the plate 51.According to embodiments of the invention, the quantity of sprue 511 is more than two.
Comprehensively above-mentioned, after the axis of the cylindrical shell of shell 5 and inner bag 7 was fixed on horizontal direction, the mobile stroke ratio of foamed material mobile stroke of the prior art reduced greatly.This is because when the axis of cylindrical shell vertically was provided with, the mobile stroke of foamed material was the extended height on the axis direction of cylindrical shell; And when the axis along continuous straight runs of cylindrical shell was provided with, the mobile stroke of foamed material was the extended height in the radial direction of cylindrical shell.Because the extended height on the tubular axis direction of outer cover of water heater is approximately 1M, and extended height in the radial direction is approximately 0.3M-0.4M, therefore, compare with the mode that cylindrical shell vertically is set, the present invention has reduced the mode of cylindrical shell crosswise fixed the mobile stroke of foamed material greatly.Simultaneously, injection-moulding device of the present invention also is provided with plural sprue, can be in the material feeding simultaneously of these sprue places, and like this, foamed material is divided into multistage at horizontal mobile stroke, has further reduced the mobile stroke of foamed material.Therefore, compared with prior art, injection-moulding device injection moulding of the present invention has reduced the excursion of foamed material density, makes each position of heat-insulation layer all approach best thermal conductivity, and insulation is balanced more.As long as foam filled fully and foamed material parameter according to the rules foams, technology of the present invention can effectively reduce thermal losses.
Continuation is referring to Fig. 3 to Fig. 8, and first alignment pin 31 has two, respectively with the inner bag 7 of water heater on two exterior wall hangers 71 cooperate with plug or engage thread; Second alignment pin 33 also has two, respectively with the inner bag 7 of water heater on water inlet pipe mouth and effluent pipe mouth cooperate with plug or engage thread.So, the anchor point of inner bag 7 has 4.Especially, because first alignment pin 31 is connected on the top cover 11 of locating rack 1, second alignment pin 33 is connected on the sidewall 13 of locating rack 1, and top cover 11 and sidewall 13 are orthogonal, and therefore the orientation of first alignment pin 31 and second alignment pin 33 also is orthogonal.So, strengthened the fixed-site between shell 5 and the inner bag 7 effectively, guaranteed that inner bag 7 is in position placed in the middle, not occurrence positions off-set phenomenon all the time in the material feeding process.Like this, can further improve the injection moulding effect, promote the heat-insulating property of heat-insulation layer.
On the other hand, the present invention also provides a kind of method that above-mentioned injection-moulding device carries out injection moulding of using, and may further comprise the steps:
Concrete fixing step is:
The first step is fixed on the shell 5 of water heater on the locating rack 1, make the extension wall of shell 5 after plate 51 towards the top;
Second step, pull down and hang plate 51 behind the wall, inner bag 7 is placed in the cavity of shell 5;
The 3rd step made exterior wall hanger 71 on the inner bag 7 towards the top, the water inlet pipe mouth on the inner bag 7 of second alignment pin 33 and water heater was connected with effluent pipe mouth, as shown in Figure 9;
The 4th the step, will hang wall after plate 51 be installed on the shell 5, as shown in figure 10;
In the 5th step, the top cover 11 of locating rack 1 is installed in the top that hangs plate 51 behind the wall;
In the 6th step, the exterior wall hanger 71 on the inner bag 7 is connected with first alignment pin 31.
By above-mentioned steps, the axis of the shell 5 of water heater and the cylindrical shell of inner bag 7 is fixed in the horizontal direction.
According to embodiments of the invention, sprue 511 is opened in to be hung behind the wall on the plate 51, and the quantity of sprue 511 is more than two.So, can to reduce foamed material mobile stroke in a lateral direction, improve the heat insulation effect of heat-insulation layer from plural sprue 511 material feedings simultaneously.Material feeding after finishing seals sprue.
According to embodiments of the invention, foamed material is selected polyurethane material for use.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the injection-moulding device of a water heater heat-insulation layer comprises the locating rack (1) that is used for shell (5) location of described water heater, and the interior alignment pin group (3) of cavity that is used for the inner bag (7) of described water heater is positioned at described shell (5);
It is characterized in that described alignment pin group (3) is connected on the described locating rack (1), and removably be connected with exterior wall hanger (71) pin-and-hole with hose nozzle on the described water heater liner (7);
Described locating rack (1) and alignment pin group (3) are fixing in the horizontal direction with the axis of the cylindrical shell of described shell (5) and inner bag (7).
2. the injection-moulding device of water heater heat-insulation layer according to claim 1 is characterized in that, described locating rack (1) comprises the top cover (11) that along continuous straight runs extends, and perpendicular to the sidewall (13) of described top cover (11);
Wherein, described alignment pin group (3) comprise with described water heater liner (7) on first alignment pin (31) that removably is connected of exterior wall hanger (71), described first alignment pin (31) is connected on the top cover (11) of described locating rack (1);
Described alignment pin group (3) also comprise with described water heater liner (7) on second alignment pin (33) that removably is connected of hose nozzle, described second alignment pin (33) is connected on the sidewall (13) of locating rack (1).
3. the injection-moulding device of water heater heat-insulation layer according to claim 2 is characterized in that,
Described second alignment pin (33) has two, respectively with the inner bag (7) of described water heater on water inlet pipe mouth and effluent pipe mouth plug or threaded engagement;
Described first alignment pin (31) has two, respectively with the inner bag (7) of described water heater on two exterior wall hangers (71) plug or threaded engagement.
4. according to the injection-moulding device of claim 2 or 3 described water heater heat-insulation layers, it is characterized in that the top cover (11) of described locating rack (1) is a demountable structure.
5. the injection-moulding device of water heater heat-insulation layer according to claim 1 is characterized in that, described injection-moulding device also comprises the material injecting device of filling-foam material in the space between described shell (5) and inner bag (7);
The sprue (511) of the described water heater that matches with described material injecting device is opened in behind the extension wall of described shell (5) on the plate (51).
6. the injection-moulding device of water heater heat-insulation layer according to claim 5 is characterized in that, the quantity of described sprue (511) is more than two.
7. an application rights requires the method that each described injection-moulding device carries out injection moulding among the 1-6, it is characterized in that, may further comprise the steps:
Step 1, by described locating rack (1) and alignment pin group (3), that the axis of the cylindrical shell of the shell (5) of described water heater and inner bag (7) is fixing in the horizontal direction;
Step 2 is utilized material injecting device, from the sprue (511) of described shell (5) foamed material is filled in the shell (5) and the space between the inner bag (7) of described water heater, forms the heat-insulation layer of described water heater.
8. injection moulding process according to claim 7 is characterized in that, described step 1 further comprises:
Step 1.1 is fixed on the shell (5) of described water heater on the described locating rack (1), and with plate (51) behind the extension wall of described shell (5) towards the top;
Step 1.2, pull down plate (51) behind the described extension wall, described inner bag (7) is placed in the cavity of described shell (5), make exterior wall hanger (71) on the described inner bag (7) towards the top, the water inlet pipe mouth on the inner bag (7) of described second alignment pin (33) and described water heater is connected with effluent pipe mouth;
Step 1.3 is installed in plate (51) behind the described extension wall on the described shell (5), the top cover (11) of described locating rack (1) is installed in the top of plate (51) behind the described extension wall;
Step 1.4 is connected the exterior wall hanger (71) on the described inner bag (7) with described first alignment pin (31).
9. according to claim 7 or 8 described injection moulding process, it is characterized in that described step 2 further comprises, from described plural sprue (511) material feeding simultaneously.
10. according to claim 7 or 8 described injection moulding process, it is characterized in that described foamed material is a polyurethane material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154203.2A CN102259404B (en) | 2011-06-09 | 2011-06-09 | Injection molding equipment and injection molding method for heat insulation layer of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154203.2A CN102259404B (en) | 2011-06-09 | 2011-06-09 | Injection molding equipment and injection molding method for heat insulation layer of water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102259404A true CN102259404A (en) | 2011-11-30 |
| CN102259404B CN102259404B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110154203.2A Active CN102259404B (en) | 2011-06-09 | 2011-06-09 | Injection molding equipment and injection molding method for heat insulation layer of water heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN102259404B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331772A (en) * | 2018-12-18 | 2020-06-26 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
| CN112206573A (en) * | 2019-07-11 | 2021-01-12 | 宁波方太厨具有限公司 | Integrated waterway module of water purifying equipment and manufacturing method thereof |
| CN115609830A (en) * | 2022-09-05 | 2023-01-17 | 嘉兴沃尔奇电器股份有限公司 | Automatic foaming platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203525A (en) * | 1981-06-08 | 1982-12-13 | Mitsubishi Plastics Ind Ltd | Manufacture of liquid storage tank |
| DE3500240A1 (en) * | 1985-01-05 | 1986-07-10 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Electric water heater and manufacturing device |
| EP1552915A2 (en) * | 2004-01-07 | 2005-07-13 | Basf Aktiengesellschaft | Polyurethane foams for insulating pipes |
| CN101722612A (en) * | 2008-10-21 | 2010-06-09 | Bsh博施及西门子家用器具有限公司 | Method and device for manufacturing a storage device, especially a hot water preparation device and a storage device |
-
2011
- 2011-06-09 CN CN201110154203.2A patent/CN102259404B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203525A (en) * | 1981-06-08 | 1982-12-13 | Mitsubishi Plastics Ind Ltd | Manufacture of liquid storage tank |
| DE3500240A1 (en) * | 1985-01-05 | 1986-07-10 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Electric water heater and manufacturing device |
| EP1552915A2 (en) * | 2004-01-07 | 2005-07-13 | Basf Aktiengesellschaft | Polyurethane foams for insulating pipes |
| CN101722612A (en) * | 2008-10-21 | 2010-06-09 | Bsh博施及西门子家用器具有限公司 | Method and device for manufacturing a storage device, especially a hot water preparation device and a storage device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331772A (en) * | 2018-12-18 | 2020-06-26 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
| CN111331772B (en) * | 2018-12-18 | 2024-01-09 | 青岛经济技术开发区海尔热水器有限公司 | Preparation method of double-liner water heater and double-liner water heater |
| CN112206573A (en) * | 2019-07-11 | 2021-01-12 | 宁波方太厨具有限公司 | Integrated waterway module of water purifying equipment and manufacturing method thereof |
| CN115609830A (en) * | 2022-09-05 | 2023-01-17 | 嘉兴沃尔奇电器股份有限公司 | Automatic foaming platform |
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| CN102259404B (en) | 2016-09-14 |
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