CN112283933A - Electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and control method thereof - Google Patents
Electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and control method thereof Download PDFInfo
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- CN112283933A CN112283933A CN202011254020.3A CN202011254020A CN112283933A CN 112283933 A CN112283933 A CN 112283933A CN 202011254020 A CN202011254020 A CN 202011254020A CN 112283933 A CN112283933 A CN 112283933A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 435
- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000008399 tap water Substances 0.000 claims description 26
- 235000020679 tap water Nutrition 0.000 claims description 26
- 239000008236 heating water Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 claims 1
- 238000004659 sterilization and disinfection Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 13
- 230000026683 transduction Effects 0.000 abstract description 2
- 238000010361 transduction Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
- F24H1/162—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
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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
- F24H9/2028—Continuous-flow heaters
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
An electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and a control method thereof, the electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange comprises a second inner container and a first inner container, a second spiral wound tube type heat exchanger is arranged in the second inner container, one end of a second pure water inlet pipe is inserted into the second inner container and is opened at the bottom of the second inner container, one end of a second pure water overflow pipe is inserted into the second inner container and is opened at the upper part of the second inner container, one end of a second water inlet pipe is inserted into the second inner container and is communicated with the lowest part of the second spiral wound tube type heat exchanger, and one end of a second water outlet pipe is inserted into the second inner container and is communicated with the highest part of the second spiral wound tube; the inner wall of the second inner container and the outer wall of the second spiral wound tube type heat exchanger jointly enclose a second cavity for storing pure water; a first spiral winding tube type heat exchanger is arranged in the first inner container. The invention has the characteristics of high heat exchange efficiency and maximized hot water transduction output rate.
Description
Technical Field
The invention relates to an electric water heater with double parallel inner containers for heating and heat exchange in series and a control method thereof.
Background
Chinese patent document No. CN1264021A discloses a double-liner electric water heater in 23.08.2000, and more particularly, to an electric water heater using two liners connected in series as a water reservoir, which is formed by connecting a control box with an indicator light, a change-over switch, a knob, a temperature controller, and a temperature limiter with a housing provided with a heat insulating layer and a water reservoir, wherein the water reservoir is formed by connecting two or more liners with water inlet pipes or water outlet pipes through connecting pipes. The double-liner electric water heater is not high in working efficiency enough, has potential safety hazards and needs to be improved.
Disclosure of Invention
The invention aims to provide an electric water heater with high heat exchange efficiency and double parallel-connected inner containers for heating and heat exchange in series and a control method thereof, so as to overcome the defects in the prior art.
The electric water heater with double parallel-connected inner containers for heating and serial-connection heat exchange comprises a second inner container and a first inner container, and is structurally characterized in that
A second spiral wound tube type heat exchanger is arranged in the second inner container, one end of a second pure water inlet pipe is inserted into the second inner container and is opened at the bottom of the second inner container, one end of a second pure water overflow pipe is inserted into the second inner container and is opened at the upper part of the second inner container, one end of a second water inlet pipe is inserted into the second inner container and is communicated with the lowest part of the second spiral wound tube type heat exchanger, and one end of a second water outlet pipe is inserted into the second inner container and is communicated with the highest part of the second spiral wound tube type heat exchanger; pure water serving as second preheated water is contained in the second inner container, and the second spiral wound tubular heat exchanger is soaked in the second preheated water;
a first spiral wound tube type heat exchanger is arranged in the first inner container, one end of a first pure water inlet pipe is inserted into the first inner container and is opened at the bottom of the first inner container, one end of a first pure water overflow pipe is inserted into the first inner container and is opened at the upper part of the first inner container, one end of a first water inlet pipe is inserted into the first inner container and is communicated with the lowest part of the first spiral wound tube type heat exchanger, and one end of a first water outlet pipe is inserted into the first inner container and is communicated with the highest part of the first spiral wound tube type heat exchanger; pure water serving as first preheated water is contained in the first inner container, and the first spiral wound tubular heat exchanger is soaked in the first preheated water;
the other end of the second water inlet pipe is communicated with the other end of the first water outlet pipe;
a second cavity is arranged between one end of the second pure water overflow pipe and the inner wall of the top of the second inner container, and a first cavity is arranged between one end of the first pure water overflow pipe and the inner wall of the top of the first inner container.
Furthermore, a second electric heater and a second liquid level sensor which are electrically connected with an electric control board of the electric water heater are respectively arranged in the second inner container, and a first electric heater and a first liquid level sensor which are electrically connected with the electric control board are arranged in the first inner container.
Further, the second electric heater is arranged in parallel with the first electric heater.
Furthermore, a second electronic thermometer electrically connected with the electric control board is arranged in the second inner container, and a temperature sensing detection end of the second electronic thermometer is inserted into the middle of the second inner container; a first electronic thermometer electrically connected with the electric control board is arranged in the first inner container, and the temperature sensing detection end of the second electronic thermometer is inserted into the middle part of the first inner container; wherein the preset temperature of the second electronic thermometer is T2, the preset temperature of the first electronic thermometer is T1, and T2 is greater than or equal to T1.
The water inlet pipe of the tap water is communicated with the water inlet of the instant electromagnetic water heater or the instant electric water heater, and the water outlet of the instant electromagnetic water heater or the instant electric water heater is communicated with the other end of the first water inlet pipe; the water inlet of the instant heating type electromagnetic water heater or the instant heating type electric water heater is provided with a Hall water flow sensor which is electrically connected with the electric control board.
And the water outlet pipe is communicated with the water inlet of the mechanical water mixing thermostatic valve.
The water mixing thermostatic valve further comprises a water inlet tee joint, a tap water inlet pipe is communicated with a water inlet of the water inlet tee joint, a first water outlet of the water inlet tee joint is communicated with a water inlet of the instant heating type electromagnetic water heater or the instant heating type electric water heater, and a second water outlet of the water inlet tee joint is communicated with a cold water inlet of the mechanical water mixing thermostatic valve.
Further, the second spiral-wound tube heat exchanger and/or the first spiral-wound tube heat exchanger are uniformly spaced uniform distribution type spiral-wound tube heat exchangers or sectional type spiral-wound tube heat exchangers.
A control method of an electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange is characterized by comprising the following steps:
step one, preparation;
pure water enters the first inner container through one end of the first pure water inlet pipe, when the level of the pure water in the first inner container reaches one end of the first pure water overflow pipe, the level of the pure water in the first inner container is balanced, and a second cavity is formed in the first inner container above the level of the pure water; at the moment, the pure water in the first inner container becomes first preheated water;
pure water enters the second inner container through one end of the second pure water inlet pipe, when the level of the pure water in the second inner container reaches one end of the second pure water overflow pipe, the level of the pure water in the second inner container is balanced, and a first cavity is formed in the second inner container above the level of the pure water; at the moment, the pure water in the second inner container becomes second preheated water;
step two, preheating;
setting the highest temperature of the first electronic thermometer for controlling whether the first electric heater works or not as T1, setting the highest temperature of the second electronic thermometer for controlling whether the second electric heater works or not as T2, wherein T2 is greater than or equal to T1;
respectively starting the second electric heater and the first electric heater through the electric control board;
when the temperature of the timely sampled first preheated water of the first electronic thermometer reaches T1, the electric control board electrically connected with the first electronic thermometer bipolar cuts off the working power supply of the first electric heater, and when the temperature of the timely sampled first preheated water of the first electronic thermometer is lower than T1, the electric control board electrically connected with the first electronic thermometer switches on the working power supply of the first electric heater, and the first electric heater is put into operation again;
when the temperature of the second preheated water sampled timely by the second electronic thermometer reaches T2, the electric control board electrically connected with the second electronic thermometer bipolar cuts off the working power supply of the second electric heater, and when the temperature of the second preheated water sampled timely by the second electronic thermometer is lower than T2, the electric control board electrically connected with the second electronic thermometer switches on the working power supply of the second electric heater, and the second electric heater works again;
step three, heat exchange;
when a Hall water flow sensor which is arranged on a water inlet of the instant electromagnetic water heater or the instant electric water heater and electrically connected with the electric control board detects a water flow signal, the electric control board respectively and bipolar cuts off working power supplies of the second electric heater and the first electric heater, and the electric control board starts the working power supply of the instant electromagnetic water heater or the instant electric water heater;
tap water enters the instant electromagnetic water heater or the instant electric water heater through the tap water inlet pipe and is heated and sterilized for the first time to become first heating water,
the first heating water flows to the other end of the first water inlet pipe from a water outlet of the instant electromagnetic water heater or the instant electric water heater, then enters the lowest part of the first spiral wound tubular heat exchanger from one end of the first water inlet pipe, then reaches the highest part of the first spiral wound tubular heat exchanger, and finally flows out from the other end of the first water outlet pipe communicated with the highest part of the first spiral wound tubular heat exchanger; the first heating water is heated for the second time by the first preheating water into second heating water with the temperature of T3 when flowing through the first spiral wound tube type heat exchanger;
the second heating water enters the lowest part of the second spiral wound tube type heat exchanger through the other end of the first water outlet pipe, then reaches the highest part of the second spiral wound tube type heat exchanger, and finally flows out from the other end of the second water outlet pipe communicated with the highest part of the second spiral wound tube type heat exchanger; the second heating water is heated for the third time by the second preheating water into third heating water with the temperature of T4 when flowing through the second spiral wound tube type heat exchanger;
the third adds hot water and flows to the hot water import that mixes water thermostatic valve of mechanical type through the other end of second outlet pipe, and the running water flows to the cold water import that mixes water thermostatic valve of mechanical type through the running water inlet pipe, and the user just can obtain the hot water that the temperature is fit for through the aperture of manual regulation water thermostatic valve that mixes of mechanical type.
Further, the method also comprises the following steps:
step four, after the product is started, when the sampling temperature of the first preheated water is kept at T1 within 5-30 seconds and does not change, the bipolar of the electric control board cuts off the working power supply of the first electric heater; and when the sampling temperature of the first preheated water is kept at T2 within 5-30 seconds and does not change, the bipolar electrode of the electric control board cuts off the working power supply of the second electric heater.
A second spiral wound tube type heat exchanger is arranged in a second inner container, a second cavity for storing pure water is defined by the inner wall of the second inner container and the outer wall of the second spiral wound tube type heat exchanger together, and the pure water is second heating water; a first spiral wound tube type heat exchanger is arranged in the first inner container, a first cavity for storing pure water is defined by the inner wall of the first inner container and the outer wall of the first spiral wound tube type heat exchanger together, and the pure water is first heating water; by connecting two electric heaters in parallel: the first electric heater and the second electric heater are respectively arranged in the two parallel inner containers: namely a first inner container and a second inner container which are connected in parallel; the first spiral wound tubular heat exchanger and the second spiral wound tubular heat exchanger are arranged in series; the water entering the first spiral wound tube type heat exchanger and the water entering the second spiral wound tube type heat exchanger are respectively heated by preheating the first preheated water and the second preheated water in advance, so that the heating efficiency of tap water can be improved, namely the maximum hot water energy conversion output rate is realized, and the cruising ability of the product can be improved; through setting up first cavity and second cavity and first pure water overflow pipe and second pure water overflow pipe, can prevent that first preheating water, the second in second inner bag, the first inner bag from preheating water overfilling, can also prevent that second inner bag, first inner bag from becoming pressure vessel because of being heated to the security performance of this product has been improved.
The first preheated water and the second preheated water in the invention are heated in advance before tap water for bath of a user enters the first spiral winding pipe type heat exchanger; when a Hall water flow sensor which is arranged on a water inlet of the instant electromagnetic water heater or the instant electric water heater and electrically connected with the electric control board detects a water flow signal, namely when a user is detected to prepare to use hot water, the electric control board respectively cuts off working power supplies of the second electric heater and the first electric heater in a bipolar mode, at the moment, the first preheated water and/or the second preheated water must be cut off in a bipolar mode regardless of whether the first preheated water and/or the second preheated water is heated to the preset temperature of the first electronic thermometer and/or the second electronic thermometer, namely, a zero line and a live line are cut off, so that the first preheated water and the second preheated water are stopped being heated, water and electricity separation is thoroughly realized, and the safety of the user is ensured. The first preheated water and the second preheated water can be heated again only when the hall water flow sensor does not detect the water flow signal.
The invention also comprises an instant electromagnetic water heater or an instant electric water heater electrically connected with the electric control board, wherein the tap water inlet pipe is communicated with the water inlet of the instant electromagnetic water heater or the instant electric water heater, and the water outlet of the instant electromagnetic water heater or the instant electric water heater is communicated with the other end of the first water inlet pipe; a Hall water flow sensor electrically connected with the electric control board is arranged on a water inlet of the instant heating type electromagnetic water heater or the instant heating type electric water heater; the instant heating type electromagnetic water heater or the instant heating type electric water heater and the first inner container and the second inner container are used for heating, scale can be effectively prevented from accumulating in the instant heating type electromagnetic water heater or the instant heating type electric water heater or accumulating in the first spiral winding pipe type heat exchanger and the second spiral winding pipe type heat exchanger, the reason is that the first spiral winding pipe type heat exchanger is soaked in first preheated water which is pure water, the surfaces of the first spiral winding pipe type heat exchanger and the second spiral winding pipe type heat exchanger basically do not generate scale in the heating process of the pure water, similarly, the second spiral winding pipe type heat exchanger is soaked in second preheated water, the outer wall and the inner wall of the second spiral winding pipe type heat exchanger can not scale, and tap water in the instant heating type electromagnetic water heater or the instant heating type electric water heater, the first spiral winding pipe type heat exchanger and the second spiral winding pipe type heat exchanger is heated, under the pressure of tap water in a pipe network, even if water scale is generated, the water scale can be quickly taken away, and the water scale can not be accumulated on the inner walls of the instant electromagnetic water heater or the instant electric water heater, the first spiral wound pipe type heat exchanger and the second spiral wound pipe type heat exchanger respectively, so that the heat transfer efficiency is improved, and the potential safety hazard is reduced.
The first inner container and the second inner container are connected in parallel for preheating and energy storage, and the first inner container and the second inner container and the instant electromagnetic water heater or the instant electric water heater exchange heat in series, so that the product can realize the characteristics of high hot water heat exchange efficiency and maximized hot water energy conversion output rate.
The tap water inlet pipe is communicated with a cold water inlet of the mechanical water mixing thermostatic valve, and the other end of the second water outlet pipe is communicated with a hot water inlet of the mechanical water mixing thermostatic valve; through the pressure balance of the tap water of the pipe network, the tap water can respectively flow into the instant electromagnetic water heater and the mechanical water mixing thermostatic valve, so that the control element is simplified, and the manufacturing cost is reduced.
The second spiral wound tube type heat exchanger and/or the first spiral wound tube type heat exchanger are uniformly spaced uniform distribution type spiral wound tube type heat exchangers or sectional type spiral wound tube type heat exchangers; when the second spiral-wound tube heat exchanger and/or the first spiral-wound tube heat exchanger is a segmented spiral-wound tube heat exchanger, the efficiency of the heat exchange can be further improved.
In conclusion, the invention has the characteristics of high heat exchange efficiency and maximized hot water energy conversion output rate.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
Fig. 2 shows an embodiment of the present invention.
Fig. 3 is a control block diagram of the present invention.
In the figure: the water heater comprises a first electronic thermometer 1, a second electronic thermometer 2, a second pure water overflow pipe 3, a second water outlet pipe 4, a second spiral winding pipe type heat exchanger 5, a second electric heater 5, a first electronic thermometer 6, a first pure water overflow pipe 7, a first water outlet pipe 8, a first spiral winding pipe type heat exchanger 9, a first electric heater 10, a second water inlet pipe 11, a second pure water inlet pipe 12, a first water inlet pipe 13, a first pure water inlet pipe 14, a second liquid level sensor 17, a first liquid level sensor 18, a Hall water flow sensor 19, a second inner container 20, a first inner container 30, an instant electromagnetic water heater 40, a mechanical water mixing thermostatic valve 50 and a water inlet tee joint 60.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1-3, the electric water heater with double parallel-connected inner containers for heating and heat exchange in series comprises a second inner container 20 and a first inner container 30, wherein a second spiral wound tube type heat exchanger 4 is arranged in the second inner container 20, one end of a second pure water inlet pipe 12 is inserted into the second inner container 20 and opens at the bottom of the second inner container 20, one end of a second pure water overflow pipe 2 is inserted into the second inner container 20 and opens at the upper part of the second inner container 20, one end of a second water inlet pipe 11 is inserted into the second inner container 20 and is communicated with the lowest part of the second spiral wound tube type heat exchanger 4, and one end of a second water outlet pipe 3 is inserted into the second inner container 20 and is communicated with the highest part of the second spiral wound tube type heat exchanger 4; the inner wall of the second liner 20 and the outer wall of the second spiral wound tubular heat exchanger 4 jointly enclose a second cavity for storing pure water; pure water serving as second preheated water is contained in the second inner container 20, and the second spiral wound tube type heat exchanger 4 is soaked in the second preheated water;
a first spiral wound tube type heat exchanger 9 is arranged in the first inner container 30, one end of a first pure water inlet pipe 14 is inserted into the first inner container 30 and is opened at the bottom of the first inner container 30, one end of a first pure water overflow pipe 7 is inserted into the first inner container 30 and is opened at the upper part of the first inner container 30, one end of a first water inlet pipe 13 is inserted into the first inner container 30 and is communicated with the lowest part of the first spiral wound tube type heat exchanger 9, and one end of a first water outlet pipe 8 is inserted into the first inner container 30 and is communicated with the highest part of the first spiral wound tube type heat exchanger 9; the inner wall of the first liner 30 and the outer wall of the first spiral wound tubular heat exchanger 9 jointly enclose a first cavity for storing pure water; pure water serving as first preheated water is contained in the first inner container 30, and the first spiral wound tube type heat exchanger 9 is soaked in the first preheated water;
the other end of the second water inlet pipe 11 is communicated with the other end of the first water outlet pipe 8; a second cavity is arranged between one end of the second pure water overflow pipe 2 and the inner wall of the top part of the second inner container 20, and a first cavity is arranged between one end of the first pure water overflow pipe 7 and the inner wall of the top part of the first inner container 30.
In this embodiment, a second insulating layer may be provided on the outer wall of the second inner container 20, and a first insulating layer may be provided on the outer wall of the first inner container 30, as required.
This product is in long-term the use, and the pure water can appear and cause partial loss because of evaporation or other reasons, and then leads to the liquid level to reduce, through setting up level sensor, can automatic alarm and suggestion replenishment pure water to maintain the normal work of this product.
In this embodiment, a second electric heater 5 and a second liquid level sensor 17 electrically connected to an electric control board of the electric water heater are disposed in the second inner container 20, and a first electric heater 10 and a first liquid level sensor 18 electrically connected to the electric control board are disposed in the first inner container 30.
The second electric heater 5 is arranged in parallel with the first electric heater 10. The reason why the heating power of the second electric heater 5 may be equal to or different from the heating power of the first electric heater 10 is that the volumes of the second inner container 20 and the first inner container 30 may be different from each other or may be the same.
A second electronic thermometer 1 electrically connected with the electric control board is arranged in the second inner container 20, and the temperature sensing detection end of the second electronic thermometer 1 is inserted into the middle part of the second inner container 20; the first inner container 30 is internally provided with a first electronic thermometer 6 electrically connected with the electric control board, and the temperature sensing detection end of the second electronic thermometer 6 is inserted into the middle part of the first inner container 30. Wherein the preset temperature of the second electronic thermometer 1 is T2, the preset temperature of the first electronic thermometer 6 is T1, and T2 is greater than or equal to T1.
In this embodiment, the instant heating type electromagnetic water heater further comprises an instant heating type electromagnetic water heater 40 or an instant heating type electric water heater electrically connected with the electric control board, the tap water inlet pipe is communicated with the water inlet of the instant heating type electromagnetic water heater 40 or the instant heating type electric water heater, and the water outlet of the instant heating type electromagnetic water heater 40 or the instant heating type electric water heater is communicated with the other end of the first water inlet pipe 13; the water inlet of the instant heating type electromagnetic water heater 40 or the instant heating type electric water heater is provided with a Hall water flow sensor 19 electrically connected with the electric control board.
In this embodiment, the water mixing thermostatic valve 50 is further included, the tap water inlet pipe is communicated with the cold water inlet of the mechanical water mixing thermostatic valve 50, and the other end of the second water outlet pipe 3 is communicated with the hot water inlet of the mechanical water mixing thermostatic valve 50.
In this embodiment, the water mixing thermostat valve further includes a water inlet tee 60, the tap water inlet pipe is communicated with a water inlet of the water inlet tee 60, a first water outlet of the water inlet tee 60 is communicated with a water inlet of the instant heating type electromagnetic water heater 40 or the instant heating type electric water heater, and a second water outlet of the water inlet tee 60 is communicated with a cold water inlet of the mechanical water mixing thermostat valve 50.
Of course, the mechanical water mixing thermostatic valve can be replaced by an electronic thermostatic proportional valve and the like.
In this embodiment, the second spiral-wound tube heat exchanger 4 and/or the first spiral-wound tube heat exchanger 9 are uniformly spaced uniform spiral-wound tube heat exchangers or segmented spiral-wound tube heat exchangers.
A control method of an electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange comprises the following steps:
step one, preparation;
pure water enters the first inner container 30 through one end of the first pure water inlet pipe 14, when the water level of the pure water in the first inner container 30 reaches one end of the first pure water overflow pipe 7, the liquid level of the pure water in the first inner container 30 is balanced, and a second cavity is formed above the liquid level of the pure water in the first inner container 30; at this time, the pure water in the first inner tank 30 becomes the first preheated water;
pure water enters the second liner 20 through one end of the second pure water inlet pipe 12, when the level of the pure water in the second liner 20 reaches one end of the second pure water overflow pipe 2, the level of the pure water in the second liner 20 is balanced, and a first cavity is formed above the level of the pure water in the second liner 20; at this time, the pure water in the second inner container 20 becomes second preheated water;
step two, preheating;
setting the highest temperature of the first electronic thermometer 6 for controlling whether the first electric heater 10 works or not as T1, setting the highest temperature of the second electronic thermometer 1 for controlling whether the second electric heater 5 works or not as T2, wherein T2 is more than or equal to T1;
the second electric heater 5 and the first electric heater 10 are respectively activated by an electric control board.
Of course, in practice, setting the maximum temperature T2 of the second electronic thermometer 1 higher than the first electronic thermometer 6T1 can further improve the maximization of the hot water transduction output rate.
When the temperature of the timely sampled first preheated water of the first electronic thermometer 6 reaches T1, the electric control board electrically connected with the first electronic thermometer 6 bipolar cuts off the working power supply of the first electric heater 10, and when the temperature of the timely sampled first preheated water of the first electronic thermometer 6 is lower than T1, the electric control board electrically connected with the first electronic thermometer 6 switches on the working power supply of the first electric heater 10, and the first electric heater 10 is put into operation again;
the water and electricity separation can be thoroughly realized through bipolar cutting, and the safety performance of the product is improved.
When the temperature of the timely sampled second preheated water of the second electronic thermometer 1 reaches T2, the electric control board electrically connected with the second electronic thermometer 1 bipolar cuts off the working power supply of the second electric heater 5, when the temperature of the timely sampled second preheated water of the second electronic thermometer 1 is lower than T2, the electric control board electrically connected with the second electronic thermometer 1 switches on the working power supply of the second electric heater 5, and the second electric heater 5 is put into operation again;
step three, heat exchange;
when a Hall water flow sensor which is arranged on a water inlet of the instant electromagnetic water heater 40 or the instant electric water heater and electrically connected with an electric control board detects a water flow signal, the electric control board respectively and bipolar cuts off the working power supply of the second electric heater 5 and the first electric heater 10, and the electric control board starts the working power supply of the instant electromagnetic water heater 40 or the instant electric water heater;
tap water enters the instant electromagnetic water heater 40 or the instant electric water heater through the tap water inlet pipe and is heated and sterilized for the first time to become first heating water,
the first heating water flows to the other end of the first water inlet pipe 13 from the water outlet of the instant electromagnetic water heater 40 or the instant electric water heater, then enters the lowest part of the first spiral wound tube type heat exchanger 9 from one end of the first water inlet pipe 13, then reaches the highest part of the first spiral wound tube type heat exchanger 9, and finally flows out from the other end of the first water outlet pipe 8 communicated with the highest part of the first spiral wound tube type heat exchanger 9; the first heating water is heated for the second time by the first preheating water into second heating water with the temperature of T3 when flowing through the first spiral wound tube type heat exchanger 9;
the second heating water enters the lowest part of the second spiral wound tubular heat exchanger 4 through the other end of the first water outlet pipe 8, then reaches the highest part of the second spiral wound tubular heat exchanger 4, and finally flows out from the other end of the second water outlet pipe 3 communicated with the highest part of the second spiral wound tubular heat exchanger 4; the second heating water is heated for the third time by the second preheating water into third heating water with the temperature of T4 when flowing through the second spiral wound tube heat exchanger 4;
the third heating water flows to the hot water inlet of the mechanical mixed water thermostatic valve 50 through the other end of the second water outlet pipe 3, the tap water flows to the cold water inlet of the mechanical mixed water thermostatic valve 50 through the tap water inlet pipe, and the user can obtain the hot water with the appropriate temperature by manually adjusting the opening degree of the mechanical mixed water thermostatic valve 50.
The control method of the electric water heater with the double parallel-connected inner containers for heating and heat exchange in series also comprises the following steps:
step four, after the product is started, when the sampling temperature of the first preheated water is kept at T1 within 5-30 seconds and does not change, the working power supply of the first electric heater 10 is cut off by the electric control board bipolar; when the sampling temperature of the first preheated water is kept at T2 and does not change within 5-30 seconds, the electric control board bipolar cuts off the working power supply of the second electric heater 5. Then, the product is in a waiting state, and waits for the water flow signal detected by the Hall water flow sensor to be transmitted to the electric control board.
After the product is started, the first preheated water and the second preheated water are respectively heated to the preset temperatures T1 and T2 in sequence, and then the instant electric water heater 40 or the instant electric water heater works, however, before the first preheated water and the second preheated water are respectively heated to the preset temperatures T1 and T2, when a water flow signal is detected by a Hall water flow sensor electrically connected with the electric control board, the electric control board can immediately and bipolar cut off the working power supply of the first electric heater 10 and the second electric heater 5, so as to ensure the safety of users.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for the convenience of description and simplicity of description, rather than to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention, the terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The electric water heater with double parallel-connected inner containers for heating and serial-connection heat exchange comprises a second inner container (20) and a first inner container (30), and is characterized in that
A second spiral wound tube type heat exchanger (4) is arranged in the second inner container (20), one end of a second pure water inlet pipe (12) is inserted into the second inner container (20) and is opened at the bottom of the second inner container (20), one end of a second pure water overflow pipe (2) is inserted into the second inner container (20) and is opened at the upper part of the second inner container (20), one end of a second water inlet pipe (11) is inserted into the second inner container (20) and is communicated with the lowest part of the second spiral wound tube type heat exchanger (4), one end of a second water outlet pipe (3) is inserted into the second inner container (20) and is communicated with the highest part of the second spiral wound tube type heat exchanger (4);
pure water serving as second preheating water is contained in the second inner container (20), and the second spiral wound tube type heat exchanger (4) is soaked in the second preheating water;
a first spiral wound tube type heat exchanger (9) is arranged in the first inner container (30), one end of a first pure water inlet pipe (14) is inserted into the first inner container (30) and is opened at the bottom of the first inner container (30), one end of a first pure water overflow pipe (7) is inserted into the first inner container (30) and is opened at the upper part of the first inner container (30), one end of a first water inlet pipe (13) is inserted into the first inner container (30) and is communicated with the lowest part of the first spiral wound tube type heat exchanger (9), one end of a first water outlet pipe (8) is inserted into the first inner container (30) and is communicated with the highest part of the first spiral wound tube type heat exchanger (9);
pure water serving as first preheated water is contained in the first inner container (30), and the first spiral wound tubular heat exchanger (9) is soaked in the first preheated water;
the other end of the second water inlet pipe (11) is communicated with the other end of the first water outlet pipe (8);
a second cavity is arranged between one end of the second pure water overflow pipe (2) and the inner wall of the top of the second inner container (20), and a first cavity is arranged between one end of the first pure water overflow pipe (7) and the inner wall of the top of the first inner container (30).
2. The electric water heater with the double parallel-heating serial-heat-exchanging inner containers as claimed in claim 1, wherein the second inner container (20) is internally provided with a second electric heater (5) and a second liquid level sensor (17) which are respectively and electrically connected with an electric control board of the electric water heater, and the first inner container (30) is internally provided with a first electric heater (10) and a first liquid level sensor (18) which are respectively and electrically connected with the electric control board.
3. The electric water heater with the double parallel-connected inner containers for heating and heat exchange in series as claimed in claim 2, characterized in that the second electric heater (5) is arranged in parallel with the first electric heater (10).
4. The electric water heater with the double parallel-connected inner containers for heating and heat exchange in series as claimed in claim 2, wherein a second electronic thermometer (1) electrically connected with the electric control board is arranged in the second inner container (20), and the temperature sensing detection end of the second electronic thermometer (1) is inserted into the middle part of the second inner container (20); a first electronic thermometer (6) electrically connected with the electric control board is arranged in the first inner container (30), and the temperature sensing detection end of the second electronic thermometer (6) is inserted into the middle part of the first inner container (30); wherein the preset temperature of the second electronic thermometer (1) is T2, the preset temperature of the first electronic thermometer (6) is T1, and T2 is greater than or equal to T1.
5. The electric water heater with the double parallel-liners for heating and heat exchange in series according to claim 4, further comprising an instant electromagnetic water heater (40) or an instant electric water heater electrically connected with the electric control board, wherein the tap water inlet pipe is communicated with the water inlet of the instant electromagnetic water heater (40) or the instant electric water heater, and the water outlet of the instant electromagnetic water heater (40) or the instant electric water heater is communicated with the other end of the first water inlet pipe (13); a Hall water flow sensor (19) electrically connected with an electric control board is arranged on a water inlet of the instant heating type electromagnetic water heater (40) or the instant heating type electric water heater.
6. The electric water heater with the double parallel-connected inner containers and the heating serial-connection heat exchange function as claimed in claim 5, further comprising a mechanical water mixing thermostatic valve (50), wherein the tap water inlet pipe is communicated with a cold water inlet of the mechanical water mixing thermostatic valve (50), and the other end of the second water outlet pipe (3) is communicated with a hot water inlet of the mechanical water mixing thermostatic valve (50).
7. The electric water heater with the double parallel-connected inner containers for heating and heat exchange in series as claimed in claim 6, further comprising a water inlet tee joint (60), wherein the tap water inlet pipe is communicated with a water inlet of the water inlet tee joint (60), a first water outlet of the water inlet tee joint (60) is communicated with a water inlet of the instant heating type electromagnetic water heater (40) or the instant heating type electric water heater, and a second water outlet of the water inlet tee joint (60) is communicated with a cold water inlet of the mechanical type water mixing thermostatic valve (50).
8. The electric water heater with the double inner containers connected in parallel for heating and heat exchange in series as claimed in any one of claims 1 to 7, wherein the second spiral wound tube heat exchanger (4) and/or the first spiral wound tube heat exchanger (9) are uniformly spaced spiral wound tube heat exchangers of uniform distribution type or sectional spiral wound tube heat exchangers.
9. The control method of the electric water heater with the double parallel-connected inner containers for heating and heat exchange in series according to claim 1 is characterized by comprising the following steps of:
step one, preparation;
pure water enters the first inner container (30) through one end of the first pure water inlet pipe (14), when the water level of the pure water in the first inner container (30) reaches one end of the first pure water overflow pipe (7), the liquid level of the pure water in the first inner container (30) is balanced, and a second cavity is formed above the liquid level of the pure water in the first inner container (30); at this time, the pure water in the first inner container (30) becomes first preheated water;
pure water enters the second inner container (20) through one end of the second pure water inlet pipe (12), when the water level of the pure water in the second inner container (20) reaches one end of the second pure water overflow pipe (2), the liquid level of the pure water in the second inner container (20) is balanced, and a first cavity is formed above the liquid level of the pure water in the second inner container (20); at this time, the pure water in the second inner container (20) becomes second preheated water;
step two, preheating;
setting the highest temperature of the first electronic thermometer (6) for controlling whether the first electric heater (10) works as T1, setting the highest temperature of the second electronic thermometer (1) for controlling whether the second electric heater (5) works as T2, wherein T2 is greater than or equal to T1;
respectively starting the second electric heater (5) and the first electric heater (10) through an electric control board;
when the temperature of the timely sampled first preheated water of the first electronic thermometer (6) reaches T1, the electric control board electrically connected with the first electronic thermometer (6) cuts off the working power supply of the first electric heater (10) in a bipolar mode, when the temperature of the timely sampled first preheated water of the first electronic thermometer (6) is lower than T1, the electric control board electrically connected with the first electronic thermometer (6) conducts the working power supply of the first electric heater (10), and the first electric heater (10) is put into operation again;
when the temperature of the second preheated water sampled timely by the second electronic thermometer (1) reaches T2, the electric control board electrically connected with the second electronic thermometer (1) cuts off the working power supply of the second electric heater (5) in a bipolar mode, when the temperature of the second preheated water sampled timely by the second electronic thermometer (1) is lower than T2, the electric control board electrically connected with the second electronic thermometer (1) conducts the working power supply of the second electric heater (5), and the second electric heater (5) is put into operation again;
step three, heat exchange;
when a Hall water flow sensor which is arranged on a water inlet of the instant electromagnetic water heater (40) or the instant electric water heater and electrically connected with the electric control board detects a water flow signal, the electric control board respectively cuts off the working power supplies of the second electric heater (5) and the first electric heater (10) in a bipolar mode, and the electric control board starts the working power supply of the instant electromagnetic water heater (40) or the instant electric water heater;
tap water enters the instant electromagnetic water heater (40) or the instant electric water heater through the tap water inlet pipe and becomes first heating water after being subjected to first heating and sterilization treatment,
the first heating water flows to the other end of the first water inlet pipe (13) from a water outlet of the instant electromagnetic water heater (40) or the instant electric water heater, then enters the lowest part of the first spiral wound pipe type heat exchanger (9) from one end of the first water inlet pipe (13), then reaches the highest part of the first spiral wound pipe type heat exchanger (9), and finally flows out from the other end of the first water outlet pipe (8) communicated with the highest part of the first spiral wound pipe type heat exchanger (9); the first heating water is heated for the second time by the first preheating water into second heating water with the temperature of T3 when flowing through the first spiral wound tube type heat exchanger (9);
the second heating water enters the lowest part of the second spiral wound tubular heat exchanger (4) through the other end of the first water outlet pipe (8), then reaches the highest part of the second spiral wound tubular heat exchanger (4), and finally flows out from the other end of the second water outlet pipe (3) communicated with the highest part of the second spiral wound tubular heat exchanger (4); the second heating water is heated for the third time by the second preheating water into third heating water with the temperature of T4 when flowing through the second spiral wound tube type heat exchanger (4);
the third heating water flows to a hot water inlet of the mechanical water mixing thermostatic valve (50) through the other end of the second water outlet pipe (3), tap water flows to a cold water inlet of the mechanical water mixing thermostatic valve (50) through a tap water inlet pipe, and a user can obtain hot water with appropriate temperature by manually adjusting the opening degree of the mechanical water mixing thermostatic valve (50).
10. The control method of the electric water heater with the double parallel-connected inner containers for heating and heat exchange in series as claimed in claim 9, characterized by further comprising the following steps:
step four, performing a first step of cleaning the substrate,
after the product is started, when the sampling temperature of the first preheated water is kept at T1 within 5-30 seconds and does not change, the bipolar of the electric control board cuts off the working power supply of the first electric heater (10); when the sampling temperature of the first preheated water is kept at T2 within 5-30 seconds and does not change, the electric control board cuts off the working power supply of the second electric heater (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011254020.3A CN112283933A (en) | 2020-11-11 | 2020-11-11 | Electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011254020.3A CN112283933A (en) | 2020-11-11 | 2020-11-11 | Electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and control method thereof |
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| CN112283933A true CN112283933A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011254020.3A Pending CN112283933A (en) | 2020-11-11 | 2020-11-11 | Electric water heater with double parallel-connected inner containers for heating and serial-connected heat exchange and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL54416A0 (en) * | 1978-04-02 | 1978-07-31 | Arieh Hadar | Electric water heater |
| CN2906438Y (en) * | 2006-05-09 | 2007-05-30 | 谢庆俊 | Electric water heater |
| CN101737943A (en) * | 2008-11-19 | 2010-06-16 | 余玉旭 | Instantaneous preheating dicaryon electric water heater |
| JP2012057936A (en) * | 2006-03-31 | 2012-03-22 | Osaka Gas Co Ltd | Atmosphere open type heat storage tank |
| CN214406472U (en) * | 2020-11-11 | 2021-10-15 | 佛山市恒芯磁能科技有限公司 | Electric water heater with double parallel-connected inner containers for heating and serial-connection heat exchange |
-
2020
- 2020-11-11 CN CN202011254020.3A patent/CN112283933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL54416A0 (en) * | 1978-04-02 | 1978-07-31 | Arieh Hadar | Electric water heater |
| JP2012057936A (en) * | 2006-03-31 | 2012-03-22 | Osaka Gas Co Ltd | Atmosphere open type heat storage tank |
| CN2906438Y (en) * | 2006-05-09 | 2007-05-30 | 谢庆俊 | Electric water heater |
| CN101737943A (en) * | 2008-11-19 | 2010-06-16 | 余玉旭 | Instantaneous preheating dicaryon electric water heater |
| CN214406472U (en) * | 2020-11-11 | 2021-10-15 | 佛山市恒芯磁能科技有限公司 | Electric water heater with double parallel-connected inner containers for heating and serial-connection heat exchange |
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