CN101666537A - Electric water heater with instant electric heater - Google Patents
Electric water heater with instant electric heater Download PDFInfo
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- CN101666537A CN101666537A CN200810215021A CN200810215021A CN101666537A CN 101666537 A CN101666537 A CN 101666537A CN 200810215021 A CN200810215021 A CN 200810215021A CN 200810215021 A CN200810215021 A CN 200810215021A CN 101666537 A CN101666537 A CN 101666537A
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Abstract
The invention discloses an electric water heater for daily use, which is characterized in that: an instant electric heater, a water flow switch and a water resistance electric shock-proof isolation pipe are serially connected and added to the rear part of a hot water pipe; the water flow switch can be positioned behind or in front of the instant electric heater; and the water resistance electric shock-proof isolation pipe must be arranged behind the instant electric heater. In the electric water heater, the instant electric heater can automatically heat by turning on a hot water tap when a water temperature in a water storing barrel is relatively low so that a user can use hot water immediately and conveniently; because the instant electric heater only heats the water flowing out, the electric water heater avoids energy waste caused by heating unused water in the water storing barrel; and because of the added water resistance electric shock-proof isolation pipe, the electric water heater can still guarantee the safety of the user when conventional electric shock-proof measurements become invalid. Because a pre-heating electrical heated tube is arranged in the electric water heater,the pre-heating device is started to heat when the water temperature in the water storing barrel is relatively low. Thus, the design power of the instant electric heater is greatly decreased and therequirement on a wire diameter of a power wire of the user is lowered.
Description
Technical field
The present invention relates to a kind of electric heater used in everyday, particularly a kind of with the good especially electric heater of instant electrical heating, electroshock-proof function.
Background technology
The electric heater of prior art is divided into two big classes: the first kind is pre-heated electric heater (a dress preheating electrothermal tube in the water butt), heating in advance in 1-2 hour before the water; Second class is the loss mode of operation electric heater.
There is following shortcoming in pre-heated electric heater: 1, will be before water heating in advance in 1-2 hour, can not use hot water immediately, use inconvenience.2, to the heating of whole bucket water, if having more than is needed whole bucket water, remaining hot water will use to tomorrow, and heat energy dissipation is more, has wasted energy.3, use electrical appliance, what the user worried most is Electrical Safety; Product in the market is general to adopt three ways to solve Electrical Safety: improve electrical equipment insulating properties, the earthing of casing, install earth leakage protective device additional, but unavoidable hundred is close and have one to dredge, above-mentioned three ways still can not be perfectly safe, potential safety hazard still exists.
There is following shortcoming in the loss mode of operation electric heater: 1, owing to will improve water temperature immediately, need very big electrical power, operating current is very big, because the line of the power lead of general family footpath is not very big, when therefore instant electric heater was worked, the voltage drop on the power lead was bigger, and not only energy loss is bigger, the operate as normal of other electrical appliance can be influenced significantly simultaneously, even power lead might be burnt out.2, use electrical appliance, what the user worried most is Electrical Safety; Product in the market is general to adopt three ways to solve Electrical Safety: improve electrical equipment insulating properties, the earthing of casing, install earth leakage protective device additional, but unavoidable hundred is close and have one to dredge, above-mentioned three ways still can not be perfectly safe, potential safety hazard still exists.
The invention provides a kind of a kind of electric heater that solves above-mentioned two class electric heater shortcomings.
Summary of the invention
The object of the invention is to provide a kind of and can preheats, can heat immediately again, and the utilization rate of electrical height, easy to use, the electric heater that the Electrical Safety performance is high.
For achieving the above object, the present invention adopts following technical proposals: the heat-insulation layer 2 of filling insulation between outer bucket 1 of water butt and the interior bucket 3; Running water water inlet pipe 4 inserts outer bucket 1, heat-insulation layer 2, interior bucket 3; The upper port sealing of running water water inlet pipe 4, the sidewall of close water inlet pipe 4 upper ends has a plurality of side direction apopores 5; The middle and lower part of bucket 3 in preheating electrothermal tube 6 is installed in, the power interface of preheating electrothermal tube 6 is in heat-insulation layer 2; Bucket 3 in hot-water line 7 inserts, the upper end of hot-water line 7 is near the upper wall of interior bucket 3; After hot-water line 7, connect instant electric heater 8, water flow switch 9 and water resistance protection against electric shock isolated tube 10; The position of water flow switch 9 can be after instant electric heater 8, also can be before instant electric heater 8; Water resistance protection against electric shock isolated tube 10 must be after instant electric heater 8; Relief valve 11 is inserted in water resistance protection against electric shock isolated tube 10 backs; Connect hot water halter 12 behind the relief valve 11; Bucket 3 in temperature sensor 13 inserts, the holding wire of temperature sensor 13 is drawn in heat-insulation layer 2.Usual manner is used in the binding of each parts of the present invention, and the outer bucket of various pipelines and water butt 1 junction all separates with insulating materials.Control circuit and associated tracks do not draw in the drawings.Water resistance protection against electric shock isolated tube 10 is pipelines made from insulating materials, and its length is bigger with the ratio that interior tube section amasss, and guarantees that the resistance of water column in the pipe is enough big.
When hot water halter 12 was opened the current outflow, water flow switch 9 is the energy auto-action just; As long as leaving water temperature is lower than the temperature that the user needs, the signal that temperature sensor 13 is obtained is delivered to control circuit, and control circuit just can drive instant electric heater 8 and automatically current be heated.When the temperature spread that needs as the water temperature in the water butt and user is big, can manually set or automatic setting preheating electrothermal tube 6 carries out preheating.
The present invention compares with existing pre-heated electric heater in the market, has following conspicuous advantage:
When 1, the temperature spread that needs as the water temperature in the water butt and user was little, after hot water halter 12 was opened, instant electric heater 8 is energising heating automatically immediately, and the user can use hot water immediately, does not need preheating, and is very convenient.
2,8 water heating to flowing out of instant electric heater have avoided pre-heated electric heater to the heating of whole bucket water, exhaustless hot water heat energy dissipation waste.
3, the general safety measure that adopts three routines of product in the market (improve electrical equipment insulating properties, the earthing of casing, install earth leakage protective device additional); water resistance protection against electric shock isolated tube 10 has been installed in the present invention additional; when the protection against electric shock measure of routine was lost efficacy, still can guarantee user's safety.Water resistance protection against electric shock isolated tube 10 is actually the water pipe that an insulating materials is made, as long as its internal diameter and length ratio meet some requirements, expense is very cheap.
The present invention compares with the loss mode of operation electric heater, has following conspicuous advantage:
When 1, the temperature spread that needs as the water temperature in the water butt and user was big, the present invention can start preheating, make water temperature and user in the water butt need temperature spread dwindle.The design power of instant electric heater 8 can be less thus, and operating current is less therefrom, the line footpath requirement of lead capable of reducing power source.
2, water resistance protection against electric shock isolated tube 10 has been installed in the present invention additional, as previously mentioned, has improved electrical safety.
Description of drawings
Accompanying drawing 1 is for being with instant electrically heated electric heater schematic diagram, and water butt is vertical (axis of bucket is vertical), and electric control system and electric wiring do not draw.
Accompanying drawing 2 is for being with instant electrically heated electric heater schematic diagram, and water butt is horizontal type (axis of bucket is a level), and electric control system and electric wiring do not draw.
The specific embodiment
Among the present invention during user's water current be to flow like this: after the user opens hot water halter 12, water is under tap water pressure, water enters from water inlet pipe 4, flow into interior bucket 3 by side direction apopore 5, because being horizontal direction, water flows into, the cold water that has guaranteed the bucket bottom upwards extrudes hot water, and cold water can not mix with hot water; Hot water enters hot-water line 7, instant electric heater 8, water flow switch 9, water resistance protection against electric shock isolated tube 10, relief valve 11, hot water halter 12 successively; Current impel water flow switch 9 actions, 8 pairs of current heating of instant electric heater (when temperature in the water butt was higher than setting value, power circuit was cut off, and instant electric heater 8 is not worked).
Because the power of instant electric heater 8 is unfit to do too greatly, so what the water that heats through instant electric heater 8 heated up is limited in scope, when the water temperature in the water butt is too low, before water, to use the water in the preheating electrothermal tube 6 preheating buckets, the maximum temperature of water can be controlled by electric control system after the preheating.The duty of preheating electrothermal tube 6 can manually be set, also automatically setting.Setting content can comprise the heating time started, heating total time, the maximum temperature that heating reaches etc.
After 6 work of preheating electrothermal tube, the water expanded by heating in the interior bucket 3, hydraulic pressure increases, and the water in the interior bucket 3 refluxes through side direction apopore 5, water inlet pipe 4, and inner bucket water is pressed thus and is fallen after rise; If the water in the bucket can not reflux through apopore 5, water inlet pipe 4 for some reason, the hydraulic pressure in the interior bucket 3 increases to certain pressure, and water can release sub-fraction through relief valve 11, inner bucket water is pressed thus fall after rise, thereby guarantee safety.
Water resistance protection against electric shock isolated tube 10 is insulation tubes, and its physical dimension calculating means is as follows:
If: the resistance of pipe water column is that R, pipe range are that the long-pending S of being of L, interior tube section, resistivity of water are that ρ (these value various places differ greatly, should be littler than general value during value), utility grid voltage are that the safe current that U, human body allow to pass through is I in the water resistance protection against electric shock isolated tube 10.
Again because of R=U ÷ I; R=ρ * L ÷ S.
Then: as the long-pending ratio L ÷ S of the length of water resistance protection against electric shock isolated tube 10 and interior tube section during more than or equal to U ÷ I ÷ ρ, this pipe can play the protection against electric shock effect.
Claims (5)
1, a kind of electric heater used in everyday, it is characterized in that the heat-insulation layer (2) that filling is insulated between outer bucket (1) and the interior bucket (3) of water butt of electric heater, at hot-water line (7) connect afterwards instant electric heater (8), water flow switch (9) and water resistance protection against electric shock isolated tube (10); The position of water flow switch (9) can be at instant electric heater (8) afterwards, also can be at instant electric heater (8) before; Water resistance protection against electric shock isolated tube (10) must be at instant electric heater (8) afterwards; Preheating electrothermal tube (6) is installed in the middle and lower part of interior bucket (3), and the power interface of preheating electrothermal tube (6) is in heat-insulation layer (2); Bucket (3) in temperature sensor (13) inserts, the holding wire of temperature sensor (13) is drawn in heat-insulation layer (2).
2, electric heater as claimed in claim 1, the heater element that it is characterized in that the embodiment one of instant electric heater (8) is the PTC heater element.
3, electric heater as claimed in claim 1 is characterized in that the heater element of the embodiment two of instant electric heater (8) is a conductive film, and the matrix of conductive film is the pipe that high-strength insulating material (quartz, pottery, devitrified glass etc.) is made.
4, electric heater as claimed in claim 1, the heater element that it is characterized in that the embodiment three of instant electric heater (8) is the heating wire that alloy material is made.
5, solar photovoltaic water heater as claimed in claim 1, it is characterized in that water resistance protection against electric shock isolated tube (10) is a pipeline made from insulating materials, its physical dimension satisfies following condition: the ratio of the long-pending S of length L and interior tube section allows the safe current value I ÷ running water electricalresistivity that passes through more than or equal to line voltage U ÷ human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810215021A CN101666537A (en) | 2008-09-03 | 2008-09-03 | Electric water heater with instant electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810215021A CN101666537A (en) | 2008-09-03 | 2008-09-03 | Electric water heater with instant electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101666537A true CN101666537A (en) | 2010-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810215021A Pending CN101666537A (en) | 2008-09-03 | 2008-09-03 | Electric water heater with instant electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101666537A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851769A (en) * | 2012-12-08 | 2014-06-11 | 广东万家乐燃气具有限公司 | Pre-sensing heating method of water heating system and water heating system |
| CN104976782A (en) * | 2015-07-28 | 2015-10-14 | 芜湖美的厨卫电器制造有限公司 | Control method for vertical electric water heater |
| CN106152534A (en) * | 2015-04-03 | 2016-11-23 | 广东顺德光晟电器股份有限公司 | The electric heater of the quick-heating type light pipe heating that water flow switch controls |
| CN106152528A (en) * | 2015-04-03 | 2016-11-23 | 广东顺德光晟电器股份有限公司 | The electric heater of the fast hot horizontal light heating that water flow switch controls |
| CN109612069A (en) * | 2018-11-30 | 2019-04-12 | 珠海格力智能装备有限公司 | Heating device and heating means |
| TWI710738B (en) * | 2019-06-19 | 2020-11-21 | 建造金屬工業股份有限公司 | Interval heating device for electric water heater |
-
2008
- 2008-09-03 CN CN200810215021A patent/CN101666537A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851769A (en) * | 2012-12-08 | 2014-06-11 | 广东万家乐燃气具有限公司 | Pre-sensing heating method of water heating system and water heating system |
| CN103851769B (en) * | 2012-12-08 | 2018-03-16 | 广东万家乐燃气具有限公司 | The prioreception heating means and its hot-water heating system of a kind of hot-water heating system |
| CN106152534A (en) * | 2015-04-03 | 2016-11-23 | 广东顺德光晟电器股份有限公司 | The electric heater of the quick-heating type light pipe heating that water flow switch controls |
| CN106152528A (en) * | 2015-04-03 | 2016-11-23 | 广东顺德光晟电器股份有限公司 | The electric heater of the fast hot horizontal light heating that water flow switch controls |
| CN104976782A (en) * | 2015-07-28 | 2015-10-14 | 芜湖美的厨卫电器制造有限公司 | Control method for vertical electric water heater |
| CN104976782B (en) * | 2015-07-28 | 2017-12-19 | 芜湖美的厨卫电器制造有限公司 | The control method of vertical electric water heater |
| CN109612069A (en) * | 2018-11-30 | 2019-04-12 | 珠海格力智能装备有限公司 | Heating device and heating means |
| TWI710738B (en) * | 2019-06-19 | 2020-11-21 | 建造金屬工業股份有限公司 | Interval heating device for electric water heater |
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Open date: 20100310 |