CN114543363A - Electric heater and using method thereof - Google Patents
Electric heater and using method thereof Download PDFInfo
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- CN114543363A CN114543363A CN202210173781.9A CN202210173781A CN114543363A CN 114543363 A CN114543363 A CN 114543363A CN 202210173781 A CN202210173781 A CN 202210173781A CN 114543363 A CN114543363 A CN 114543363A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an electric heater and a using method thereof, wherein the electric heater comprises an electric heater assembly, a first expansion water tank, a water softener, a storage water tank, a second expansion water tank, a heat preservation water tank and a plate heat exchanger; step two, arranging a sensor; step three, arranging an electric heater assembly and an expansion water tank; arranging a heat preservation water tank and a plate heat exchanger; testing thermal balance and water balance of the thermodynamic system, and analyzing thermal resistance of the thermodynamic system; laying a thermal pipeline; step seven, building a heat-insulating wall; the heating device effectively improves the heating speed and the heating conversion efficiency by adopting the chromium-nickel alloy heating wire; by adopting the instantaneous-relaxation heating technology, the heat transfer is more uniform, the heat transfer speed is higher, the heat efficiency is higher, no water scale is formed, the voltage of 5000V can be resisted, the thorough separation of water and electricity can be realized, and the device has the advantages of small heat dissipation capacity of a heating pipe network, high heat energy utilization rate and environmental protection.
Description
Technical Field
The invention relates to the technical field of electric heaters, in particular to an electric heater and a using method thereof.
Background
The conventional strip mine electric heater system is arranged according to the heat transfer and heat balance principle, the electric energy is utilized to rapidly heat the passing water flow and convert the water flow into heat energy, the heat energy is transferred to the internal energy of flowing hot water through heat transfer, the hot water is repeatedly and forcibly circulated through a circulating pump, a heat-preservation water tank, a plate-type heat exchanger and a heating or bathing system, the electric heater is continuously heated and rises to a target temperature, bathing is provided through hot water circulation, and the hot water is transferred to a heating area through convection and heat radiation, so that the whole heating system is ensured to achieve stable heat balance;
because the starting of the traditional normal-pressure electric heating pipe type electric heater host needs to be delayed for 1 minute, the heating speed is relatively slow, the heat productivity is small, the heating conversion efficiency is low, the circulating temperature rising speed of a thermodynamic system is slow, the heat dissipation capacity of a thermodynamic pipe network is large, and at least 8-16 hours are needed from the starting of the electric heater to the time when the temperature of the area to which the thermodynamic pipe network belongs to a heating area is raised to the expected target temperature, and the heat efficiency of the system is relatively low; simultaneously, when quality of water is not good, all accumulated a large amount of incrustations in electric heater heating pipe body, the drum, pipeline etc. department, and need often carry out manual cleaning, chemical cleaning and cleaning efficiency lower, the incrustation scale is difficult thoroughly to be clear away, greatly reduced circulating water yield and water speed, reduce electric heater system circulation thermal efficiency by a wide margin.
Disclosure of Invention
The present invention is directed to an electric heater and a method for using the same to solve the above-mentioned problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electric heater, includes electric heater unit spare, electric heater unit spare includes the drum, the bottom fixedly connected with back taper bobbin base of drum, the bottom fixedly connected with straight tube at the back taper bobbin base, the bottom flange of straight tube is fixed with the blow off pipe, install the butterfly valve on the blow off pipe, the top of drum is provided with first temperature measurement sensor, one side of first temperature measurement sensor is provided with water level measurement sensor, the input fixedly connected with inlet tube of drum, the output fixedly connected with outlet pipe of drum installs the second temperature measurement sensor on the outlet pipe.
Preferably, the slope of the bevel edge of the bottom of the inverted cone is not less than 1:1, the length of the straight pipe is not less than 50mm, and the pipe diameter is not less than DN25 mm.
Preferably, first water pump is installed to the one end of inlet tube, and first expansion tank is installed to the input of first water pump, and one side of first expansion tank is provided with the water softener, and one side of water softener is provided with storage tank, and storage tank's input is connected to running water supply end, and storage tank's output is connected to the input of water softener, and the output of water softener is connected to the input of first water pump.
Preferably, one side of the electric heater assembly is provided with a second expansion water tank, the second expansion water tank is connected to the water outlet pipe, one side of the second expansion water tank is provided with a second water pump, the input end of the second water pump is installed at the output end of the water outlet pipe, the heat preservation water tank is installed at the output end of the second water pump, the heat preservation water tank is provided with a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet is connected to the output end of the second water pump, the second water outlet is connected to the water inlet pipe, a third water pump is installed at the first water outlet, and a plate heat exchanger is installed at the output end of the third water pump.
Preferably, a third water inlet, a third water outlet, a fourth water outlet and a fourth water inlet are formed in the plate heat exchanger, the output end of the third water pump is connected to the third water inlet, the third water outlet is connected to the second water inlet, a fourth water pump is installed on the fourth water outlet, a heat consumer is arranged on one side of the plate heat exchanger, the input end of the heat consumer is connected to the output end of the fourth water pump, and the output end of the heat consumer is connected to the fourth water inlet.
The using method of the electric heater comprises the steps of selecting an electric heating wire; step two, arranging a sensor; step three, arranging an electric heater assembly and an expansion water tank; arranging a heat preservation water tank and a plate heat exchanger; testing thermal balance and water balance of the thermodynamic system, and analyzing thermal resistance of the thermodynamic system; laying a thermal pipeline; step seven, building a heat-insulating wall;
in the first step, an electric heating wire is installed inside the boiler barrel, the electric heating wire is a chrome-nickel alloy bare wire and is made of high-quality Cr20Ni80, the nickel content is more than 80%, the initial shape is a spiral bare wire, and the axial distance between the bare wires is not less than 25 mm; if chromium-nickel round wires are adopted, the diameter of the chromium-nickel round wires is not less than 6 mm; if the chromium-nickel flat wire is adopted, the thickness of the chromium-nickel flat wire is not less than 5 mm; when an irregular electric heating wire is adopted, the chromium electric heating wire can be wrapped by high-temperature magnesium oxide powder.
In the second step, a first temperature measuring sensor and a water level measuring sensor are arranged at the top of the boiler barrel, the length of the first temperature measuring sensor and the length of the water level measuring sensor are about 20mm, and meanwhile, a second temperature measuring sensor is arranged on the water outlet pipe, so that when the boiler barrel is in a state of being not full of water, the water level measuring sensor does not display, and the electric heater assembly carries out interlocking control and immediately and automatically stops running;
in the third step, an electric heater assembly is arranged, a water inlet pipe is connected to a tap water supply network through a first water pump, and a water softener and a storage water tank are arranged at the output end of the first water pump; a first expansion water tank is arranged on a water supply pipeline of the electric heater assembly, and a second expansion water tank is arranged on a water outlet pipeline, so that when a pipeline system leaks greatly, an expansion water tank water supplementing mode can be adopted;
in the fourth step, a heat-preservation water tank is arranged, the first water inlet is connected to the water outlet pipe through the second water pump, and the second water outlet is connected to the water inlet pipe; arranging a plate heat exchanger, connecting a third water inlet to a first water outlet through a third water pump, connecting a third water outlet to a second water inlet, connecting a fourth water outlet to the input end of a hot user through a fourth water pump, and connecting a fourth water inlet to the output end of the hot user;
in the fifth step, after the steps are finished, carrying out heat balance and water balance tests on the built thermodynamic system, analyzing the thermal resistance of the thermodynamic system and eliminating the defects;
in the sixth step, when laying the thermal pipeline, an indoor exposed pipe, a pipe ditch or a direct-buried laying mode is adopted; the original three-stage anticorrosion and heat preservation is gradually upgraded to the first stage, the pipeline heat preservation falling condition is checked regularly and irregularly, the heat preservation missing part is recovered in time, and the pipeline is replaced by a polyurethane heat preservation pipe;
and seventhly, when the heat-insulation wall is built, the sealing performance and the wall thickness of the indoor wall are improved, the pseudo-ginseng wall and the Wu-zero wall are used for construction, air leakage points are eliminated, and the newly built wall is subjected to heat insulation by adopting rock wool boards, polystyrene foam boards, ceramic heat-insulation boards and the like.
Preferably, in the first step, the electric heating wire is provided with a nitinol conformal metal, that is, a proper amount of nitinol shape memory metal is uniformly added into the electric heating wire; the electric heating wire can be replaced by an electric heating pipe, the type of the electric heating pipe is stainless steel 321, 316L, 1Cr18Ni9Ti, Teflon, red copper or titanium heating pipe and the like, and the electric heating pipe can be of a three-part spiral baffle plate long U-shaped pipe structure.
Preferably, in the third step, the specific method for arranging the water softener and the storage water tank is as follows: the input end of the storage water tank is connected to a tap water supply end, the output end of the storage water tank is connected to the input end of the water softener, and the output end of the water softener is connected to the input end of the first water pump.
Preferably, in the third step, the water temperature at the input end of the storage water tank is 14-20 ℃, the water temperature at the output end of the first expansion water tank is 10-20 ℃, the water temperature at the output end of the first water pump is 14-20 ℃, and the water temperature at the output end of the second expansion water tank is 10-20 ℃.
Preferably, in the fourth step, the water temperature at the output end of the second water pump is 45-60 ℃, the water temperature at the second water outlet is 25-40 ℃, and the water temperature at the fourth water outlet is 40-50 ℃.
Compared with the prior art, the invention has the beneficial effects that: the heating device effectively improves the heating speed and the heating conversion efficiency by adopting the chromium-nickel alloy heating wire; by adopting the instantaneous-relaxation heating technology, the heat transfer is more uniform, the heat transfer speed is higher, the heat efficiency is higher, no water scale is formed, the voltage of 5000V can be resisted, the thorough separation of water and electricity can be realized, and the device has the advantages of small heat dissipation capacity of a heating pipe network, high heat energy utilization rate and environmental protection.
Drawings
FIG. 1 is a block diagram of the overall structure of the present invention;
FIG. 2 is a schematic front view of an electric heater assembly according to the present invention;
FIG. 3 is a flow chart of a method of the present invention;
in the figure: 1. an electric heater assembly; 10. a drum; 11. a reverse tapered barrel bottom; 12. a straight pipe; 13. a sewage discharge pipe; 14. a butterfly valve; 15. a first temperature measurement sensor; 16. a water level measuring sensor; 17. a water inlet pipe; 18. a water outlet pipe; 19. a second temperature measurement sensor; 2. a first water pump; 20. a first expansion tank; 21. a water softener; 22. a storage water tank; 3. a second expansion tank; 30. a second water pump; 31. a heat preservation water tank; 310. a first water inlet; 311. a first water outlet; 312. a second water inlet; 313. a second water outlet; 32. a third water pump; 33. a plate heat exchanger; 330. a third water inlet; 331. a third water outlet; 332. a fourth water outlet; 333. a fourth water inlet; 4. a hot user; 40. and a fourth water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention is shown: an electric heater comprises an electric heater assembly 1, wherein the electric heater assembly 1 comprises a boiler barrel 10, the bottom end of the boiler barrel 10 is fixedly connected with an inverted cone barrel bottom 11, the bottom end of the inverted cone barrel bottom 11 is fixedly connected with a straight pipe 12, a drain pipe 13 is fixed on a bottom flange of the straight pipe 12, a butterfly valve 14 is installed on the drain pipe 13, a first temperature measuring sensor 15 is arranged at the top of the boiler barrel 10, a water level measuring sensor 16 is arranged on one side of the first temperature measuring sensor 15, an input end of the boiler barrel 10 is fixedly connected with a water inlet pipe 17, an output end of the boiler barrel 10 is fixedly connected with a water outlet pipe 18, and a second temperature measuring sensor 19 is installed on the water outlet pipe 18; the slope of the bevel edge of the inverted cone bottom 11 is not less than 1:1, the length of the straight pipe 12 is not less than 50mm, and the pipe diameter is not less than DN25 mm; one end of the water inlet pipe 17 is provided with a first water pump 2, the input end of the first water pump 2 is provided with a first expansion water tank 20, one side of the first expansion water tank 20 is provided with a water softener 21, one side of the water softener 21 is provided with a storage water tank 22, the input end of the storage water tank 22 is connected to a tap water supply end, the output end of the storage water tank 22 is connected to the input end of the water softener 21, and the output end of the water softener 21 is connected to the input end of the first water pump 2; a second expansion water tank 3 is arranged on one side of the electric heater component 1, the second expansion water tank 3 is connected to the water outlet pipe 18, a second water pump 30 is arranged on one side of the second expansion water tank 3, the input end of the second water pump 30 is installed at the output end of the water outlet pipe 18, a heat preservation water tank 31 is installed at the output end of the second water pump 30, a first water inlet 310, a first water outlet 311, a second water inlet 312 and a second water outlet 313 are arranged on the heat preservation water tank 31, the first water inlet 310 is connected to the output end of the second water pump 30, the second water outlet 313 is connected to the water inlet pipe 17, a third water pump 32 is installed on the first water outlet 311, and a plate heat exchanger 33 is installed at the output end of the third water pump 32; the plate heat exchanger 33 is provided with a third water inlet 330, a third water outlet 331, a fourth water outlet 332 and a fourth water inlet 333, the output end of the third water pump 32 is connected to the third water inlet 330, the third water outlet 331 is connected to the second water inlet 312, the fourth water pump 40 is installed on the fourth water outlet 332, one side of the plate heat exchanger 33 is provided with a hot user 4, the input end of the hot user 4 is connected to the output end of the fourth water pump 40, and the output end of the hot user 4 is connected to the fourth water inlet 333.
Referring to fig. 3, an embodiment of the present invention: the using method of the electric heater comprises the steps of selecting an electric heating wire; step two, arranging a sensor; step three, arranging an electric heater assembly and an expansion water tank; arranging a heat preservation water tank and a plate heat exchanger; testing thermal balance and water balance of the thermodynamic system, and analyzing thermal resistance of the thermodynamic system; laying a thermal pipeline; step seven, building a heat-insulating wall;
in the first step, an electric heating wire is arranged in the boiler barrel 10, the electric heating wire is a chrome-nickel alloy bare wire and is made of high-quality Cr20Ni80, the nickel content is more than 80%, the initial shape is a spiral bare wire, and the axial distance between the bare wires is not less than 25 mm; if chromium-nickel round wires are adopted, the diameter of the chromium-nickel round wires is not less than 6 mm; if the chromium-nickel flat wire is adopted, the thickness of the chromium-nickel flat wire is not less than 5 mm; when an irregular electric heating wire is adopted, high-temperature magnesium oxide powder can be adopted to wrap the chromium electric heating wire; the electric heating wire is provided with the nitinol conformal metal, namely, the nitinol shape memory metal with proper content is uniformly added in the electric heating wire; the electric heating wire can be replaced by an electric heating pipe, the type of the electric heating pipe is stainless steel 321, 316L, 1Cr18Ni9Ti, Teflon, red copper or titanium heating pipe and the like, and the electric heating pipe can be of a three-part spiral baffle plate long U-shaped pipe structure.
In the second step, a first temperature measuring sensor 15 and a water level measuring sensor 16 are arranged at the top of the boiler barrel 10, the length of the first temperature measuring sensor is about 20mm, and a second temperature measuring sensor 19 is arranged on a water outlet pipe 18, so that when the boiler barrel 10 is in a water-short state, the water level measuring sensor 16 does not display, and the electric heater component 1 implements interlocking control and immediately and automatically stops running;
in the third step, the electric heater assembly 1 is arranged, the water inlet pipe 17 is connected to a tap water supply network through the first water pump 2, and the water softener 21 and the storage water tank 22 are arranged at the output end of the first water pump 2; a first expansion water tank 20 is arranged on a water supply pipeline of the electric heater assembly 1, and a second expansion water tank 3 is arranged on a water outlet pipeline, so that when a pipeline system leaks greatly, an expansion water tank water supplementing mode can be adopted; the specific method for arranging the water softener 21 and the storage water tank 22 is as follows: connecting the input end of the storage water tank 22 to the tap water supply end, connecting the output end of the storage water tank 22 to the input end of the water softener 21, and connecting the output end of the water softener 21 to the input end of the first water pump 2; the water temperature of the input end of the storage water tank 22 is 14-20 ℃, the water temperature of the output end of the first expansion water tank 20 is 10-20 ℃, the water temperature of the output end of the first water pump 2 is 14-20 ℃, and the water temperature of the output end of the second expansion water tank 3 is 10-20 ℃;
in the fourth step, the heat preservation water tank 31 is arranged, the first water inlet 310 is connected to the water outlet pipe 18 through the second water pump 30, and the second water outlet 313 is connected to the water inlet pipe 17; the plate heat exchanger 33 is arranged, the third water inlet 330 is connected to the first water outlet 311 by the third water pump 32, the third water outlet 331 is connected to the second water inlet 312, the fourth water outlet 332 is connected to the input end of the thermal user 4 by the fourth water pump 40, and the fourth water inlet 333 is connected to the output end of the thermal user 4; wherein the water temperature at the output end of the second water pump 30 is 45-60 ℃, the water temperature at the second water outlet 313 is 25-40 ℃, and the water temperature at the fourth water outlet 332 is 40-50 ℃;
in the fifth step, after the fifth step is completed, testing the thermal balance and the water balance of the built thermodynamic system, analyzing the thermal resistance of the thermodynamic system, and eliminating the defects; see tables 1-3;
in the sixth step, when laying the thermal pipeline, an indoor exposed pipe, a pipe ditch or a direct-buried laying mode is adopted; the original three-stage anticorrosion and heat preservation is gradually upgraded to the first stage, the pipeline heat preservation falling condition is checked regularly and irregularly, the heat preservation missing part is recovered in time, and the pipeline is replaced by a polyurethane heat preservation pipe;
and seventhly, when the heat-insulation wall is built, the sealing performance and the wall thickness of the indoor wall are improved, the pseudo-ginseng wall and the Wu-zero wall are used for construction, air leakage points are eliminated, and the newly built wall is subjected to heat insulation by adopting rock wool boards, polystyrene foam boards, ceramic heat-insulation boards and the like.
TABLE 1 thermal equilibrium analysis table for thermodynamic system in steady state
| Water supplement quantity | Leakage amount |
| Water replenishing pumpWater filling amount | Leakage rate of corrosion and fracture of pipeline |
| - | Artificially discharging water and water of heating pipeline |
| - | The valve connected with the outside is not closed or is not closed tightly |
| - | Leakage rate of valve body and flange |
| - | Leakage rate of pump body or joint of water pump |
TABLE 2 analysis table of relative balance of water amount in case of failure of thermodynamic system
| Factor of resistance | Sources of faults |
| The electric heater operates but the heating pipe is not heated | Heater control system |
| The running groups of the electric heaters are insufficient | Heater control system |
| Individual burning or burnout of electric heating tubes | Electric heating tube |
| The circulating pump motor rotates reversely or not | Circulating pump motor |
| Improper valve opening | Valve gate |
| The valve is adjusted by experience without setting a flowmeter | Valve gate |
| Improper connection between new and old pipe networks | Pipe connection |
| The heat source is not consistent with each heat user | Distance of heat supply |
| The pressure supplied by the circulation pump not reaching the hot user or the actual supply pressure being insufficient | Hot user terminal pressure |
| Thermal pipeline with air resistance | Pipeline air resistance |
| With pipes, valves, or radiators closed or blocked | Pipes, valves, or radiators |
| The pipe diameter, the circulating water quantity and the direction of the pipeline are incorrect | Pipe diameter, circulating water quantity and direction |
TABLE 3 thermal resistance analysis chart of thermodynamic system
Based on the above, the present invention has the advantages that when the present invention is used, the water softener 21 softens the water delivered from the storage water tank 22, the water is delivered to the water inlet pipe 17 by the first water pump 2, the water is rapidly heated by the electric heating wire in the boiler barrel 10, the heated water enters the thermal insulation water tank 31 through the water outlet pipe 18 and the second water pump 30, the water enters the plate heat exchanger 33 through the first water outlet 311, the third water pump 32 and the third water inlet 330, the heated water flows back to the electric heater assembly 1 through the third water outlet 331, the second water inlet 312 and the second water outlet 313, the hot water is forcibly circulated repeatedly, the electric heating wire is used for continuously heating and raising the temperature to a target temperature, the water for the hot user 4 enters the plate heat exchanger 33 through the fourth water inlet 333 for heating, and the hot user 4 is delivered to the heat recovery user 4 through the fourth water pump 40 at the fourth water outlet 332; a straight pipe 12, a sewage discharge pipe 13 and a butterfly valve 14 which are arranged at the bottom of the inverted cone-shaped cylinder bottom 11 are used for controlling sewage discharge, a first temperature measuring sensor 15 and a second temperature measuring sensor 19 are used for monitoring water temperature, and a water level measuring sensor 16 is used for monitoring water level; the first expansion water tank 20 and the second expansion water tank 3 are used for emergency water supplement, the instant heating technology is adopted in the invention, and the principle of the technology is as follows: the heating body and the water flowing channel are separated by adopting a reliable non-metal insulating layer, heat generated by the heating body is transferred to the metal cavity body which circulates water through the insulator, so that the water in the cavity body can quickly take away the heat and heat, the heating body, the circuit and the water path are completely separated, and 100% electric-water separation is achieved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An electric heater comprising an electric heater assembly (1), characterized in that: the electric heater assembly (1) comprises a boiler barrel (10), the bottom of the boiler barrel (10) is fixedly connected with an inverted cone barrel bottom (11), the bottom of the inverted cone barrel bottom (11) is fixedly connected with a straight pipe (12), a bottom flange of the straight pipe (12) is fixed with a blow-off pipe (13), a butterfly valve (14) is installed on the blow-off pipe (13), the top of the boiler barrel (10) is provided with a first temperature measurement sensor (15), one side of the first temperature measurement sensor (15) is provided with a water level measurement sensor (16), an input end of the boiler barrel (10) is fixedly connected with a water inlet pipe (17), an output end of the boiler barrel (10) is fixedly connected with a water outlet pipe (18), and a second temperature measurement sensor (19) is installed on the water outlet pipe (18).
2. An electric heater as claimed in claim 1, wherein: the slope of the bevel edge of the inverted cone-shaped cylinder bottom (11) is not less than 1:1, the length of the straight pipe (12) is not less than 50mm, and the pipe diameter is not less than DN25 mm.
3. An electric heater as claimed in claim 1, wherein: first water pump (2) are installed to the one end of inlet tube (17), first expansion tank (20) are installed to the input of first water pump (2), one side of first expansion tank (20) is provided with water softener (21), one side of water softener (21) is provided with storage tank (22), and the input of storage tank (22) is connected to the running water supply end, the output of storage tank (22) is connected to the input of water softener (21), the output of water softener (21) is connected to the input of first water pump (2).
4. An electric heater as claimed in claim 1, wherein: one side of electric heater subassembly (1) is provided with second expansion tank (3), and second expansion tank (3) are connected to on outlet pipe (18), one side of second expansion tank (3) is provided with second water pump (30), and the input of second water pump (30) is installed in the output of outlet pipe (18), holding water box (31) is installed to the output of second water pump (30), be provided with first water inlet (310) on holding water box (31), first delivery port (311), second water inlet (312) and second delivery port (313), and first water inlet (310) are connected to the output of second water pump (30), second delivery port (313) are connected to inlet tube (17), install third water pump (32) on first delivery port (311), plate heat exchanger (33) is installed to the output of third water pump (32).
5. An electric heater as claimed in claim 4, wherein: the plate heat exchanger (33) is provided with a third water inlet (330), a third water outlet (331), a fourth water outlet (332) and a fourth water inlet (333), the output end of the third water pump (32) is connected to the third water inlet (330), the third water outlet (331) is connected to the second water inlet (312), the fourth water pump (40) is installed on the fourth water outlet (332), one side of the plate heat exchanger (33) is provided with a heat consumer (4), the input end of the heat consumer (4) is connected to the output end of the fourth water pump (40), and the output end of the heat consumer (4) is connected to the fourth water inlet (333).
6. The using method of the electric heater comprises the steps of selecting an electric heating wire; step two, arranging a sensor; step three, arranging an electric heater assembly and an expansion water tank; arranging a heat preservation water tank and a plate heat exchanger; testing thermal balance and water balance of the thermodynamic system, and analyzing thermal resistance of the thermodynamic system; laying a thermal pipeline; step seven, building a heat-insulating wall; the method is characterized in that:
in the first step, an electric heating wire is arranged in the boiler barrel (10), the electric heating wire is a chromium-nickel alloy bare wire and is made of high-quality Cr20Ni80, the nickel content is more than 80%, the initial shape is a spiral bare wire, and the axial distance between the bare wires is not less than 25 mm; if chromium-nickel round wires are adopted, the diameter of the chromium-nickel round wires is not less than 6 mm; if the chromium-nickel flat wire is adopted, the thickness of the chromium-nickel flat wire is not less than 5 mm; when an irregular electric heating wire is adopted, the chromium electric heating wire can be wrapped by high-temperature magnesium oxide powder.
In the second step, a first temperature measuring sensor (15) and a water level measuring sensor (16) are arranged at the top of the boiler barrel (10), the length of the first temperature measuring sensor is about 20mm, and meanwhile, a second temperature measuring sensor (19) is arranged on a water outlet pipe (18), so that when the boiler barrel (10) is in a water-short state, the water level measuring sensor (16) does not display, and the electric heater assembly (1) implements interlocking control and immediately and automatically stops running;
in the third step, the electric heater assembly (1) is arranged, the water inlet pipe (17) is connected to a tap water supply network through the first water pump (2), and the water softener (21) and the storage water tank (22) are arranged at the output end of the first water pump (2); a first expansion water tank (20) is arranged on a water supply pipeline of the electric heater assembly (1), and a second expansion water tank (3) is arranged on a water outlet pipeline, so that when a pipeline system leaks greatly, a water supplementing mode of the expansion water tank can be adopted;
in the fourth step, a heat-preservation water tank (31) is arranged, the first water inlet (310) is connected to the water outlet pipe (18) through a second water pump (30), and the second water outlet (313) is connected to the water inlet pipe (17); arranging a plate heat exchanger (33), connecting the third water inlet (330) to the first water outlet (311) through a third water pump (32), connecting the third water outlet (331) to the second water inlet (312), connecting the fourth water outlet (332) to the input end of the hot user (4) through a fourth water pump (40), and connecting the fourth water inlet (333) to the output end of the hot user (4);
in the fifth step, after the fifth step is completed, testing the thermal balance and the water balance of the built thermodynamic system, analyzing the thermal resistance of the thermodynamic system, and eliminating the defects;
in the sixth step, when laying the thermal pipeline, an indoor open pipe, a pipe ditch or a direct-buried laying mode is adopted; the original three-stage anticorrosion and heat preservation is gradually upgraded to the first stage, the pipeline heat preservation falling condition is checked regularly and irregularly, the heat preservation missing part is recovered in time, and the pipeline is replaced by a polyurethane heat preservation pipe;
and seventhly, when the heat-insulation wall is built, the sealing performance and the wall thickness of the indoor wall are improved, the pseudo-ginseng wall and the Wu-zero wall are used for construction, air leakage points are eliminated, and the newly built wall is subjected to heat insulation by adopting rock wool boards, polystyrene foam boards, ceramic heat-insulation boards and the like.
7. The method of using an electric heater as claimed in claim 6, wherein: in the first step, the electric heating wire is provided with the nitinol conformal metal, namely, the nitinol shape memory metal with proper content is uniformly added into the electric heating wire; the electric heating wire can be replaced by an electric heating pipe, the type of the electric heating pipe is stainless steel 321, 316L, 1Cr18Ni9Ti, Teflon, red copper or titanium heating pipe and the like, and the electric heating pipe can be of a three-part spiral baffle plate long U-shaped pipe structure.
8. The method of using an electric heater as claimed in claim 6, wherein: in the third step, the concrete method for arranging the water softener (21) and the storage water tank (22) comprises the following steps: the input end of the storage water tank (22) is connected to the tap water supply end, the output end of the storage water tank (22) is connected to the input end of the water softener (21), and the output end of the water softener (21) is connected to the input end of the first water pump (2).
9. The method of using an electric heater as claimed in claim 6, wherein: in the third step, the water temperature at the input end of the storage water tank (22) is 14-20 ℃, the water temperature at the output end of the first expansion water tank (20) is 10-20 ℃, the water temperature at the output end of the first water pump (2) is 14-20 ℃, and the water temperature at the output end of the second expansion water tank (3) is 10-20 ℃.
10. The method of using an electric heater as claimed in claim 6, wherein: in the fourth step, the water temperature at the output end of the second water pump (30) is 45-60 ℃, the water temperature at the second water outlet (313) is 25-40 ℃, and the water temperature at the fourth water outlet (332) is 40-50 ℃.
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| WO2021212962A1 (en) * | 2020-04-23 | 2021-10-28 | 青岛海尔空调电子有限公司 | Water heating unit |
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| KR20100124168A (en) * | 2009-05-18 | 2010-11-26 | 전남도립대학산학협력단 | Eletric boiler |
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