CN201382547Y - Energy-saving electric water heater - Google Patents
Energy-saving electric water heater Download PDFInfo
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- CN201382547Y CN201382547Y CN200920035798U CN200920035798U CN201382547Y CN 201382547 Y CN201382547 Y CN 201382547Y CN 200920035798 U CN200920035798 U CN 200920035798U CN 200920035798 U CN200920035798 U CN 200920035798U CN 201382547 Y CN201382547 Y CN 201382547Y
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Abstract
The utility model provides an energy-saving electric water heater, and mainly adopts the technical scheme that a heat insulation body with an end cover and/or an insulation block and/or a temperature resistant plastic connecting pipe or an insulation wall of a ultrathin electric water heater are/is additionally arranged based on the prior water storage-type electric water heater; the heat insulation body with the end cover is pasted on the inner surface of a maintenance end cover in the position corresponding to a maintenance hole; the insulation block is mounted in the insulation layer between a metal rack and an inner wall of a casing, and connected with the metal rack; and the temperature resistant plastic connecting pipe or the insulation wall of the ultrathin electric water heater is screwed on the metal water inlet short pipe and the metal water outlet short pipe respectively. Each measure adopted can improve the thermal insulation performance in corresponding position and the energy efficiency grade of various water storage-type electric water heaters under the equivalent conditions of heat insulation thickness can be upgraded by one to two grades with less investment,. The utility model has the advantages of simple and reasonable structural design, good heat insulation performance, low energy consumption coefficient, and the like. If the insulation layer is thickened to about 40mm, the energy efficiency grade is far higher than the Grade I standard, and the heat- insulating and energy-saving effects of the electric water heater are better.
Description
Technical field
The utility model relates to a kind of storage-type electric water heater, and particularly a kind of energy-saving storage-type electric water heater that can obviously improve the efficiency grade belongs to household appliance technical field.
Background technology
Existing storage-type electric water heater, its structure is mainly by the water courage, polyurethane insulation coating, the hanger that the outer hanging feet of hanger and metal is formed in the metal, shell, water inlet pipe, outlet pipe, electric heater, water courage end cap and maintenance end cap, described water courage end cap is encapsulated on the water courage mouth, the polyurethane insulation coating foam filling is between water courage and shell, hanger is made up of the outer hanging feet of hanger in the metal on the outer wall that is welded on the water courage and the metal that is contained in shell, the electric heater that extend in the water courage is contained on the water courage end cap, the maintenance end cap is contained on the shell with water courage end cap correspondence position, owing on the water courage end cap electric heater and temperature control equipment thereof are housed, need carry out necessary maintenance, so between maintenance end cap and water courage end cap, do not establish any insulation measure, make the heat-insulating property of existing electric heater not good, hanger and outer hanging feet are metalwork in adding, water inlet pipe and outlet pipe also are metal tube, further accelerated radiating rate, make the heat-insulating property of existing storage-type electric water heater bad, be that energy-saving effect difference or efficiency are lower, far below the primary standard of GB 21519-2008 " storage-type electric water heater efficiency limit value and efficiency grade " regulation.This standard puts teeth on November 1st, 08.Stipulate in this standard: the test during of the efficiency of electric heater, 24 hours intrinsic coefficient of energy dissipation ε of measuring and calculating with 20 ℃ of environment temperatures, 65 ℃ of water temperatures of insulation, be divided into 5 efficiency grades by ε≤(0.6,0.7,0.8,0.9,1.0), the poorest limit value of efficiency is 5 grades of ε≤1.0, and this standard will be cancelled the 5th grade standard of ε≤1.0 after implementing 2 years.But the insulation layer thickness of existing storage-type electric water heater mostly is 20mm, and its actual fixed coefficient of energy dissipation ε can reach 1, only reaches the 5 minimum grade standards of GB 21519-2008 regulation, should belong to obsolete product.In order to improve the efficiency grade, usually take to increase the way of insulation layer thickness, but its thickness at 30mm with interior increase along with insulation layer thickness, the insulation energy consumption range of decrease is obvious, thickness then is incubated the energy consumption range of decrease and eases up more than 30mm, when insulation layer thickness surpassed 40mm, it was not obvious to think to improve heat preservation effect by the thickness that increases heat-insulation layer again, can increase the volume and the cost of electric heater on the contrary.
Summary of the invention
The purpose of this utility model is on the deficiency that overcomes above-mentioned existing storage-type electric water heater, design a kind of reasonable in design, good heat insulating, coefficient of energy dissipation is low, efficiency grade height only needs low input can obviously improve the energy-saving electric water heater of efficiency grade.
After the structure of existing storage-type electric water heater is studied repeatedly, find that the insulation leak that its heat-insulating property is difficult to improve is present on the metal hanger, two interior hangers (wide about 30mm on the electric heater, thick 2mm) is a ∏ type metal stamping member, an end of hanger is welded on the outer wall of water courage in the ∏ type, the other end of the interior hanger of ∏ type passes heat-insulation layer and directly is connected with hanging feet outside the metal through bolt with the shell applying again, water gallbladder-heat amount hanger in the metal ∏ of high-termal conductivity type directly passes to outside shell and the metal on the hanging feet, in air, dispel the heat, make the heat-insulation layer at this place ineffective, form the insulation leak.
Another insulation leak is present on the maintenance end cap, the about φ 200mm of diameter, thick about 3mm of this maintenance end cap, lid is contained on the maintenance window of outer cover of water heater, and be sealed on no any insulation measure between the water courage end cap that electrical equipment such as electrothermal tube and thermocouple are housed on the water courage mouth, heat energy on the water courage end cap outwards dispels the heat through the maintenance end cap by thermal diffusion mode and hot-air convection, and this also is the temperature reason higher than skin temperature of maintenance end caps.
Another is incubated leak and is present on the metal inlet tube and outlet tube, the upper end of the inlet tube and outlet tube on the electric heater is directly to be welded in water courage bottom, the other end stretches out heat-insulation layer and is connected with water valve or water pipe with shell, because of the high-termal conductivity of metal inlet tube and outlet tube makes water generates convection current in the pipe, and the convection current of water has further strengthened the rate of heat transfer of metal inlet tube and outlet tube, has increased energy consumption.
Energy-saving electric water heater of the present utility model mainly is the insulation leak that exists at above-mentioned existing storage-type electric water heater, effective corrective measure is proposed respectively, its structure mainly is to comprise the water courage, polyurethane insulation coating, the hanger that the outer hanging feet of hanger and metal is formed in the metal, shell, water inlet pipe, outlet pipe, electric heater, on the basis of the storage-type electric water heater that water courage end cap and maintenance end cap are formed, have additional heat-insulating block, described heat-insulating block is installed in the metal and is connected in the heat-insulation layer between the hanger and outer casing inner wall and with hanger in the metal, and metal hanging feet outward is contained on the outer shell outer wall and through bolt and is connected with heat-insulating block.Described heat-insulating block is selected the enhancing nylon block for use.
Energy-saving electric water heater of the present utility model has additional the end cap thermal insulator, and described end cap thermal insulator is installed on the inner surface with the maintenance end cap of service hatch opposite position.
Described end cap thermal insulator comprises styrofoam plate and reflective matrix, and described reflective die attach is on the inner surface of styrofoam plate, and the another side of styrofoam plate sticks on the inner surface of maintenance end cap.
Described reflective matrix is selected the high brightness minute surface retroreflective sheeting of specular aluminium diaphragm, minute surface polyester fiber diaphragm or the chromium plating of ABS plastic sheet surface for use.
Energy-saving electric water heater of the present utility model has additional the anti-electric wall of adapter of heatproof plastics or super-thin electric water heater, and described heatproof plastics are taken over or the anti-electric wall of super-thin electric water heater is screwed in respectively on metal water inlet short tube and the metal water outlet short tube.
Energy-saving electric water heater of the present utility model, can both improve heat-insulating property respectively to every above-mentioned measure, produce remarkable energy saving effect, both can use separately, also can use simultaneously, the expense that only needs that less input, just can various existing storage-type electric water heaters 1～2 grade of efficiency grade raising under insulation thickness condition on an equal basis.Has the structural design advantages of simple, good heat insulating, advantage such as coefficient of energy dissipation is low.As on the basis of above-mentioned measure, again heat-insulation layer being thickeied about 40mm, can make the efficiency grade far above 1 grade standard, its heat preservation and energy conservation effects is better.
Description of drawings
Accompanying drawing 1 is the structural representation of an embodiment in the utility model;
Accompanying drawing 2 is a kind of structural representations of heat preserving type maintenance end cap of the present utility model;
Accompanying drawing 3 is a kind of structural representations of heat-insulating type hanger of the present utility model;
Accompanying drawing 4 is a kind of structural representations that heatproof plastics of the present utility model are taken over;
Accompanying drawing 5 is a kind of structural representations of the anti-electric wall of super-thin electric water heater of the present utility model.
The specific embodiment
Accompanying drawing is to be example with horizontal storage-type electric water heater, and the restricted the specific embodiment of the utility model that discloses of non-limit is suitable for too for vertical storage-type electric water heater.In conjunction with the accompanying drawings the utility model is further described as follows.
Referring to accompanying drawing 1,1 among the figure is the maintenance end cap, the 2nd, and the end cap thermal insulator, the 3rd, water courage end cap, the 4th, advance pipe in the water, the 5th, pipe in the water outlet, the 6th, water courage, the 7th, polyurethane insulation coating, the 8th, heat-insulating block, the 9th, hanger in the metal, the 10th, outer hanging feet, the 11st, water outlet short tube, the 12nd, advance the water short tube, the 13rd, the heatproof plastics are taken over, and the 14th, electric heating tube, the 15th, shell, A are the radial section center lines at hanger place, and the center line left-hand broken line is a half sectional view.
Energy-saving electric water heater of the present utility model, its structure mainly is on the basis of the storage-type electric water heater formed of hanging feet 10 is formed outside hanger 9 and the metal in comprising water courage 6, polyurethane insulation coating 7, metal hanger, shell 15, water inlet short tube 12, water outlet short tube 11, electric heater 14, water courage end cap 3 and maintenance end cap 1, have additional end cap thermal insulator 2, described end cap thermal insulator 2 is installed on the inner surface with the maintenance end cap 1 of service hatch opposite position.As shown in Figure 1.
Described end cap thermal insulator 2 comprises styrofoam plate 21 and reflective matrix 22, and described reflective matrix 22 sticks on the inner surface of styrofoam plate 21, and the another side of styrofoam plate 21 sticks on the inner surface of maintenance end cap 1.As shown in Figure 2.For be contained in if any the part electric elements maintenance end cap 1 inner surface the time, can on the styrofoam plate 21 of correspondence position, preset cavity and get final product.
Described reflective matrix 22 can be selected the high brightness minute surface retroreflective sheeting of specular aluminium diaphragm, minute surface polyester fiber diaphragm or the chromium plating of ABS plastic sheet surface for use.
Energy-saving electric water heater of the present utility model, have additional heat-insulating block 8, described heat-insulating block 8 is installed in the metal and is connected in the heat-insulation layer 7 between the hanger 9 and shell 15 inwalls and with hanger 9 in the metal, and metal hanging feet 10 outward is contained on shell 15 outer walls and through bolt and is connected with heat-insulating block 8.As shown in Figure 3.Described heat-insulating block 8 is selected the enhancing nylon block for use.
Energy-saving electric water heater of the present utility model, have additional the heatproof plastics and take over 13 (as shown in Figure 4) or the anti-electric wall 13-1 (as shown in Figure 5) of super-thin electric water heater, described heatproof plastics adapter 12 or the anti-electric wall 13-1 of super-thin electric water heater are screwed in respectively on metal water inlet short tube 12 and the metal water outlet short tube 11 (as shown in Figure 1).During improvement, the length that is welded on the inlet tube and outlet tube on the inner bag can be shortened to 10～20mm and be provided with external screw thread, the heatproof plastics that spin respectively again take over or the anti-electric wall of super-thin electric water heater to design length.
Energy-saving electric water heater of the present utility model, owing to increased the end cap thermal insulator that constitutes by styrofoam plate and reflective matrix in the cavity in the maintenance end cap, the radiant heat that water courage end caps is projected on the retroreflective sheeting of end cap thermal insulator is reflected back, this minute surface reflection technology has been stopped heat energy to the topmost heat transfer type radiation heating of maintenance end cap, and the maximum energy consumption of having stopped this place is the radiation energy consumption; Because of the hot-air in the cavity flows very little, the flow velocity of air-flow on maintenance end cap inner surface is very low, so the rate of heat transfer itself to the maintenance end cap is just very low, the heat-insulation layer that constitutes through the styrofoam plate again, thereby make heat energy drop to minimum to the rate of heat transfer of maintenance end caps, improve the heat-insulating property of electric heater maintenance end caps greatly, reduced energy consumption, remedied the insulation leak of maintenance end caps.Again owing to having additional heat-insulating block between hanger in metal and the shell, selecting enhancing nylon for use because of heat-insulating block makes, its thermal conductivity factor only is one of percentage of metal, thereby cut off the heat conduction between interior hanger of metal and shell and the outer hanging feet of metal, changed the high-termal conductivity of existing hanger, reduced the thermal losses at this place significantly, the insulation leak that the high-termal conductivity because of hanger is caused is remedied.For the electric heater that directly on the water courage, welds water inlet pipe and outlet pipe, also the length of inlet tube and outlet tube can be shortened to 10～20mm and be provided with external screw thread, the heatproof plastics that spin respectively again take over or the anti-electric wall (as ZL200620074179.6) of super-thin electric water heater to design length.Because of the thermal conductivity factor of plastics only is 1/3rd of a water, and the hot water in the water pipe is in the top, its proportion is less than cold water, so the hot water of top can only be in the mode of conduction to the heating of the cold water of below, stopped the convection current of water in the pipe, effectively reduce the thermal losses at water inlet pipe and outlet pipe place, improved efficiency, thereby remedied the defective of the continuous heat radiation of virgin metal water inlet pipe and metal outlet pipe structure.Above-mentioned every measure can both improve heat-insulating property respectively, produces remarkable energy saving effect, so, both can use separately, also can use simultaneously, the expense that only needs that less input, just can various existing storage-type electric water heaters 1～2 grade of efficiency grade raising under insulation thickness condition on an equal basis.
Claims (6)
1, a kind of energy-saving electric water heater, comprise hanger, shell, water inlet pipe, outlet pipe, electric heater, water courage end cap and maintenance end cap that water courage, polyurethane insulation coating, the interior hanger of metal and the outer hanging feet of metal are formed, it is characterized in that also comprising heat-insulating block, described heat-insulating block is installed in the metal and is connected in the heat-insulation layer between the hanger and outer casing inner wall and with hanger in the metal, and metal hanging feet outward is contained on the outer shell outer wall and through bolt and is connected with heat-insulating block.
2, high energy efficiency energy-saving electric water heater as claimed in claim 1 is characterized in that described heat-insulating block selects the enhancing nylon block for use.
3, energy-saving electric water heater as claimed in claim 1 or 2 is characterized in that also comprising the end cap thermal insulator, and described end cap thermal insulator is installed on the inner surface with the maintenance end cap of service hatch opposite position.
4, energy-saving electric water heater as claimed in claim 3, it is characterized in that described end cap thermal insulator comprises styrofoam plate and reflective matrix, described reflective die attach is on the inner surface of styrofoam plate, and the another side of styrofoam plate sticks on the inner surface of maintenance end cap.
5, energy-saving electric water heater as claimed in claim 4 is characterized in that described reflective matrix selects the high brightness minute surface retroreflective sheeting of specular aluminium diaphragm, minute surface polyester fiber diaphragm or the chromium plating of ABS plastic sheet surface for use.
6, energy-saving electric water heater as claimed in claim 5, it is characterized in that having additional the anti-electric wall of adapter of heatproof plastics or super-thin electric water heater, described heatproof plastics are taken over or the anti-electric wall of super-thin electric water heater is screwed in respectively on metal water inlet short tube and the metal water outlet short tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920035798U CN201382547Y (en) | 2009-03-20 | 2009-03-20 | Energy-saving electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920035798U CN201382547Y (en) | 2009-03-20 | 2009-03-20 | Energy-saving electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382547Y true CN201382547Y (en) | 2010-01-13 |
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ID=41526020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920035798U Expired - Fee Related CN201382547Y (en) | 2009-03-20 | 2009-03-20 | Energy-saving electric water heater |
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| Country | Link |
|---|---|
| CN (1) | CN201382547Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991879A (en) * | 2011-09-19 | 2013-03-27 | 福建赛特新材股份有限公司 | Heat preservation container |
| WO2018157313A1 (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Wall-mounting structure, and electric water heater |
| WO2018157315A1 (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Water heater |
-
2009
- 2009-03-20 CN CN200920035798U patent/CN201382547Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991879A (en) * | 2011-09-19 | 2013-03-27 | 福建赛特新材股份有限公司 | Heat preservation container |
| CN102991879B (en) * | 2011-09-19 | 2014-11-05 | 福建赛特新材股份有限公司 | Heat preservation container |
| WO2018157313A1 (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Wall-mounting structure, and electric water heater |
| WO2018157315A1 (en) * | 2017-02-28 | 2018-09-07 | 芜湖美的厨卫电器制造有限公司 | Water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20130320 |