CN106196565B - Constant-temperature instant water heater and control method thereof - Google Patents
Constant-temperature instant water heater and control method thereof Download PDFInfo
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- CN106196565B CN106196565B CN201610798355.9A CN201610798355A CN106196565B CN 106196565 B CN106196565 B CN 106196565B CN 201610798355 A CN201610798355 A CN 201610798355A CN 106196565 B CN106196565 B CN 106196565B
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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
- F24H1/101—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 using electric 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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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- 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)
- Control Of Resistance Heating (AREA)
Abstract
The invention provides a constant-temperature instant heating type water heater, which comprises: the heating device comprises a liner, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are connected with the liner; the water flow detection unit is used for detecting whether water flows into the inner container or not, and is arranged in the water inlet pipe; the water inlet temperature detection unit is used for detecting the temperature of water flowing into the inner container and is connected with the water inlet pipe; the water outlet temperature detection unit is used for detecting the temperature of water flowing out of the inner container and is connected with the water outlet pipe; and the control unit is connected with the heating body, the water flow detection unit, the water inlet temperature detection unit and the water outlet temperature detection unit and is used for controlling the work of the heating body. The user need not wait for the hot water heating in the inner bag when needing hot water, has practiced thrift the time, and does not have a large amount of storage water for a long time in the inner bag, can not cause the corruption to the inner bag.
Description
Technical Field
The invention relates to the field of water heaters, in particular to a constant-temperature instant water heater and a control method thereof.
Background
At present, water heaters commonly used in families comprise a water storage type electric water heater, a solar water heater, a gas water heater and the like. The products are mature in technology and comfortable and safe to use. However, the following problems exist in the using process:
the solar water heater and the gas water heater are adopted, the water heater is far away from the water outlet at the tail end, the middle part of the water heater is provided with a long connecting pipeline, and the water temperature in the connecting pipeline cannot meet the requirement of a user before continuous use every time. In order to obtain hot water with higher temperature, the water in the section of the connecting pipeline is wasted, which causes inconvenience in use and waste of water resources.
When a large amount of users use water, when the water pressure is reduced, the water inlet pressure of the water heater fluctuates, the outlet water temperature of the water outlet fluctuates, and the users feel uncomfortable.
When the water storage type water heater is adopted, water in the water storage tank needs to be heated firstly, if the number of users is large, the water heated in the water storage tank cannot meet the use requirement, the water in the water storage tank needs to be heated by the water heater, and otherwise the water cannot reach the use temperature; if the number of users is small, the hot water in the water storage tank can be slowly cooled, and energy is wasted; secondly, if water is stored in the water storage tank for a long time, the water storage tank is easy to rust and cause water in the water storage tank to deteriorate.
In the prior art, a heater is usually controlled by a group of silicon controlled rectifiers, and if the silicon controlled rectifiers are broken in the using process, the water heater stops working, so that the working reliability is reduced.
Disclosure of Invention
The invention aims to provide a constant-temperature instant heating type water heater which can keep water in the water heater constant, has a simple structure and is convenient to control.
To achieve the above object, the present invention provides a constant temperature instant water heater, comprising:
the inner container is used for containing a certain amount of water which can be heated; the water inlet pipe and the water outlet pipe are connected with the inner container and are used for transmitting water flowing into and out of the inner container;
the heating unit is arranged in the inner container and comprises a plurality of heating bodies which are sequentially numbered;
the water heater comprises a shell coated outside an inner container, wherein the shell is provided with a display screen and an operating button, the display screen is used for displaying the temperature of water in the inner container, and the operating button is used for setting the working time and the heating temperature of the water heater and connecting or disconnecting a power supply;
the water flow detection unit is used for detecting the water inflow of water flowing into the inner container and sending a detected water flow signal to the control unit, and the water flow detection unit is arranged in the water inlet pipe;
the water inlet temperature detection unit is used for detecting the temperature of water flowing into the liner and sending a detected water inlet temperature signal to the control unit, and the water inlet temperature detection unit is connected with the water inlet pipe;
the water outlet temperature detection unit is used for detecting the temperature of the water flowing out of the inner container and sending a detected water outlet temperature signal to the control unit, and the water outlet temperature detection unit is connected with the water outlet pipe;
the control unit is connected with the heating body, the water flow detection unit, the water inlet temperature detection unit, the water outlet temperature detection unit and the operation button and is used for controlling the working time of the heating body; wherein: the controller is used for calculating the required heating power according to the water inlet flow, the water outlet temperature and the water inlet temperature and sending the required heating power to the switch unit;
the switch unit is connected with the heating unit and controls the working efficiency of the heating body by controlling the working time of the heating body;
the control unit is provided with an information recorder for recording the working state of the heating body, when the heating body is heated, the information recorder records the serial number of the working heating body and transmits the serial number to the control unit, and when one-time heating is finished and the heating body needs to be started again, the control unit calls the heating body with the corresponding serial number after the serial number of the heating body recorded by the information recorder according to the serial number sequence of the heating body to heat water.
According to the improvement of the invention, the invention also provides a control method of the constant-temperature instant water heater, which comprises the following steps:
setting the required water outlet temperature;
detecting the water inflow rate of water flowing into the inner container;
detecting the temperature of water flowing into the inner container;
detecting the temperature of the water flowing out of the inner container;
responding to the signals of the water inlet flow, the water outlet temperature and the water inlet temperature, calculating the required heating power, controlling the working time of the heating body, recording the number of the working heating body, and if the water outlet temperature is equal to the set water outlet temperature, maintaining the existing heating state until the heating is finished;
the information recorder records the number of the working heating body and transmits the number to the control unit, and when the heating body needs to be started again after one-time heating is finished, the control unit calls the heating body with the corresponding number after the number of the heating body recorded by the information recorder according to the number sequence of the heating body to heat water.
According to the technical scheme, the water heater is a constant-temperature instant heating type water heater, a user does not need to wait for the hot water in the inner container to be heated when needing hot water, time is saved, and the inner container is not stored with a large amount of water for a long time and cannot be corroded; the water inlet pipe is internally provided with the water flow detection unit, and the heating bodies with different numbers can be adjusted and called according to the water flow to heat the water, so that the energy is saved, and the working efficiency is improved; the water inlet temperature detection unit arranged on the water inlet pipe and the water outlet temperature detection unit arranged on the water outlet pipe can adjust heating of the heating bodies with different numbers according to the water inlet temperature and the water outlet temperature, and if the water inlet temperature is lower than 10 ℃, the control unit can send out an alarm signal to remind a user to pay attention to protect the water heater and avoid damage to the water heater; when the water outlet temperature is higher than 75 ℃, the circuit is disconnected, so that the phenomenon that the user is scalded due to overhigh water outlet temperature is avoided; the temperature protector is used for not inserting water in the inner bag when the trouble such as short circuit takes place for the circuit, and the heating member circular telegram, when the temperature of water in the inner bag exceeded 105 ℃, the temperature protector cuts off working circuit, prevents to burn futilely and brews the accident.
The invention adopts 2 groups of bidirectional thyristors to control the work of one group of heating bodies, when one group of bidirectional thyristors is broken down, the other group of bidirectional thyristors can provide work, and the water heater does not work only when neither group of bidirectional thyristors can work, thereby improving the reliability and the service life of the water heater.
The information recorder records the working state of the heating body, the water heater is started again after one-time heating is finished, and the control unit preferentially calls the heating body which does not work according to the working state of the heating body recorded by the information recorder, so that the service life of the heating body is prolonged.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is an exploded view of a particular embodiment of a constant temperature tankless water heater.
Fig. 2 is a schematic view of the structure of the heating body.
Fig. 3 is a schematic circuit diagram of one embodiment of the connection between the heating body and the thyristor according to the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
As shown in fig. 1, 2 and 3, a constant temperature instantaneous water heater comprises an inner container 15 for containing a certain amount of water which can be heated; the water inlet pipe 7 and the water outlet pipe 3 are connected with the inner container 15, and the water inlet pipe 7 and the water outlet pipe 3 are used for transferring water flowing into the inner container 15 and water flowing out of the inner container 15; the water inlet pipe 7 and the water outlet pipe 3 are positioned at two sides of the inner container 15; as is well known to those skilled in the art, the connection between the water inlet pipe 7 and the inner container 15 can be achieved through various forms, such as welding or pipe joint connection; wherein the water inlet pipe 7 and the water outlet pipe 3 can be a single pipe or a plurality of pipes.
Set up heating element in inner bag 15, this heating element includes a plurality of heating members 12, and these a plurality of heating members 12 number in proper order.
The cladding is the shell outside inner bag 15, be provided with display screen and operating button on the shell, the display screen is used for showing the temperature of inner bag 15 water-logging, and operating button is used for setting up operating time, the heating temperature of water heater, switch on or break off the power, the operating time of water heater, heating temperature signal carry for the control unit 16.
The shell includes upper cover 1 and lower cover 6, and upper cover 1 and lower cover 6 pass through bolted connection, are provided with inlet tube mounting hole and outlet pipe mounting hole on the lower cover 6, and inlet tube 7 and outlet pipe 3 are connected to the outside through inlet tube mounting hole and outlet pipe mounting hole, are provided with inner bag 15 installing support on the lower cover 6, are connected with inner bag 15 on the support.
And a water flow detecting unit 9 for detecting an inflow rate of water flowing into the inner container 15 and transmitting a detected water flow signal to the control unit 16, the water flow detecting unit 9 being provided in the water inlet pipe 7.
And the water inlet temperature detection unit 8 is used for detecting the temperature of the water flowing into the inner container 15 and sending the detected water inlet temperature signal to the control unit 16, and the water inlet temperature detection unit 8 is connected with the water inlet pipe 7.
And the water outlet temperature detection unit 14 is used for detecting the temperature of the water flowing out of the inner container 15 and sending a detected water outlet temperature signal to the control unit 16, and the water outlet temperature detection unit 14 is connected with the water outlet pipe 3.
A control unit 16 connected with the heating body 12, the water flow detection unit 9, the water inlet temperature detection unit 8, the water outlet temperature detection unit 14 and the operation buttons for controlling the working time of the heating body 12; wherein: the control unit 16 is used for calculating the required heating power according to the inflow water flow, the outflow water temperature and the inflow water temperature and sending the required heating power to the switch unit.
And a switching unit connected to the heating unit, the switching unit controlling the operating efficiency of the heating body 12 by controlling the operating time of the heating body 12.
The control unit 16 is provided with an information recorder for recording the working state of the heating body 12, when the heating body 12 is heated, the information recorder records the serial number of the working heating body 12, as shown in fig. 3, the heating bodies are a heating body A, a heating body B, a heating body C, a heating body D, a heating body E and a heating body F in sequence, if the heating body is heated for the first time, the switching unit needs to control 6 groups of heating bodies to work according to the calculated power, the control unit calls the heating body A, the heating body B, the heating body C, the heating body D, the heating body E and the heating body F to work, and the information recorder records the serial number of the called heating body in the last sequence; when the heater is started again, 3 groups of heating bodies are needed to participate in work, the control unit calls the heating body A, the heating body B and the heating body C to work, and after the work is finished, the information recorder records the serial number of the heating bodies in the last sequence; and when the heater is started next time and 4 groups of heaters are needed to participate in the work, the control unit calls the heaters D, E, F and A to participate in the work, and the rest is done in sequence, so that the time for each heater to participate in the work is basically kept balanced, and the same heater cannot be continuously used for a long time.
In a further embodiment, 6 groups of heating bodies are arranged in the inner container, the switch unit is a silicon controlled rectifier, the silicon controlled rectifier is provided with 7 groups, one ends of the 7 groups of silicon controlled rectifiers are respectively connected to 3 live wires, one ends of the silicon controlled rectifiers connected to the same 1 live wire are mutually connected in parallel, and 1 group of heating bodies are arranged between the other ends of the two silicon controlled rectifiers which do not belong to the same live wire.
Fig. 3 shows a specific embodiment of connection between a heating body and a thyristor of the constant-temperature instantaneous water heater according to the present invention, wherein the constant-temperature instantaneous water heater is connected to a 3-phase line circuit, wherein one end of the 1 st thyristor and one end of the 2 nd thyristor are connected in parallel to the 1 st phase line, one end of the 3 rd thyristor and one end of the 4 th thyristor are connected in parallel to the 2 nd phase line, and one end of the 5 th thyristor, one end of the 6 th thyristor and one end of the 7 th thyristor are connected in parallel to the 3 rd phase line; the other end of 1 st silicon controlled rectifier is connected to the one end of heating member A and the one end of heating member B, the other end of heating member A is connected to the 5 th silicon controlled rectifier, the other end of heating member B is connected to the 3 rd silicon controlled rectifier, the 3 rd silicon controlled rectifier still is connected to the one end of heating member C, the other end of heating member C and the one end of heating member F are connected to the 6 th silicon controlled rectifier, the other end of heating member F and the one end of heating member E are connected to the 2 nd silicon controlled rectifier, the other end of heating member E and the one end of heating member D are connected to the 4 th silicon controlled rectifier, the other end of heating member D is connected to the 7 th silicon controlled rectifier.
In a further embodiment, a flange 13 is arranged on the top of the inner container 15, and a heating body 12 extending to the inside of the inner container is mounted on the flange 13.
In a further embodiment, the distance between the water outlet pipe 3 and the bottom of the inner container 15 is greater than the distance between the water inlet pipe 7 and the bottom of the inner container 15, that is, the water inlet pipe 7 is located at the lower half part of the inner container 15, and the water outlet pipe 3 is located at the upper half part of the inner container 15.
In a further embodiment, a sealing gasket 4 is arranged at the joint of the water inlet pipe and the inner container 15, and the sealing gasket 4 can be silicone ring or rubber ring.
In a further embodiment, a temperature protector 10 is disposed on the inner container 15, and the temperature protector 10 is connected to a control unit 16.
When faults such as circuit short circuit occur, no water flows into the water inlet pipe 7, the heating body 12 still works, when the water temperature in the inner container 15 reaches 105 ℃, the temperature protector 10 is tripped off, and the control unit 16 cuts off the working circuit to prevent accidents. The temperature protector 10 needs a professional to open the front cover 1 of the machine and manually recover after fault removal, so that the use safety of a user is ensured.
With reference to fig. 1, 2 and 3, the heating of the constant temperature instantaneous water heater is realized by the following method:
setting the required water outlet temperature;
detecting the inflow rate of water flowing into the inner container 15;
detecting the temperature of the water flowing into the inner container 15;
detecting the temperature of the water flowing out of the inner container 15;
responding to the signals of the water inlet flow, the water outlet temperature and the water inlet temperature, calculating the required heating power, controlling the working time of the heating body 12, recording the number of the working heating body, if the water outlet temperature is equal to the set water outlet temperature, maintaining the current working state until the heating is finished, and calling the heating body 12 with the next number of the working heating body to heat the water in the inner container 15 when restarting according to the recorded number of the working heating body.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (7)
1. A constant temperature instantaneous water heater, comprising:
the inner container is used for containing a certain amount of water which can be heated; the water inlet pipe and the water outlet pipe are connected with the inner container and are used for transmitting water flowing into and out of the inner container;
the heating unit is arranged in the inner container and comprises a plurality of heating bodies which are sequentially numbered;
the water heater comprises a shell coated outside an inner container, wherein the shell is provided with a display screen and an operating button, the display screen is used for displaying the temperature of water in the inner container, and the operating button is used for setting the working time and the heating temperature of the water heater and connecting or disconnecting a power supply;
the water flow detection unit is used for detecting the water inflow of water flowing into the inner container and sending a detected water flow signal to the control unit, and the water flow detection unit is arranged in the water inlet pipe;
the water inlet temperature detection unit is used for detecting the temperature of water flowing into the liner and sending a detected water inlet temperature signal to the control unit, and the water inlet temperature detection unit is connected with the water inlet pipe;
the water outlet temperature detection unit is used for detecting the temperature of the water flowing out of the inner container and sending a detected water outlet temperature signal to the control unit, and the water outlet temperature detection unit is connected with the water outlet pipe;
the control unit is connected with the heating body, the water flow detection unit, the water inlet temperature detection unit, the water outlet temperature detection unit and the operation button and is used for controlling the working time of the heating body; wherein: the control unit is used for calculating the required heating power according to the water inlet flow, the water outlet temperature and the water inlet temperature and sending the required heating power to the switch unit;
the switch unit is connected with the heating unit and controls the working efficiency of the heating body by controlling the working time of the heating body;
the control unit is provided with an information recorder for recording the working state of the heating body, when the heating body is heated, the information recorder records the serial number of the working heating body and transmits the serial number to the control unit, and when the heating body needs to be started again after one-time heating is finished, the control unit calls the heating body with the corresponding serial number after the serial number of the heating body recorded by the information recorder according to the serial number sequence of the heating body to heat water; when the heating bodies need to be heated, the corresponding number of the heating bodies are started according to the calculated heating power.
2. The constant-temperature instant heating type water heater according to claim 1, characterized in that the heating unit comprises 6 groups of heating bodies, the switching unit comprises 7 groups of thyristors, one ends of the 7 groups of thyristors are respectively connected to 3 live wires, one ends of the thyristors connected to the same 1 live wire are connected in parallel with each other, the other ends of the thyristors are connected to one end of the heating body, and the other end of the heating body is connected to the other ends of the thyristors which do not belong to the same live wire.
3. The constant temperature instantaneous water heater according to claim 1, wherein a flange is provided on the top of the tank, and the heating body is connected to the flange and extends into the tank.
4. The constant temperature tankless water heater of claim 1, wherein the distance of the outlet tube from the bottom of the liner is greater than the distance of the inlet tube from the bottom of the liner.
5. The constant temperature instantaneous water heater of claim 1, wherein a gasket is disposed at the junction of the water inlet tube and the liner.
6. The constant temperature instantaneous water heater according to claim 1, wherein a temperature protector is disposed on the inner tank, the temperature protector being connected to the control unit.
7. A control method for a constant temperature instantaneous water heater is characterized by comprising the following steps:
setting the required water outlet temperature;
detecting the water inflow rate of water flowing into the inner container;
detecting the temperature of water flowing into the inner container;
detecting the temperature of the water flowing out of the inner container;
responding to the signals of the water inlet flow, the water outlet temperature and the water inlet temperature, calculating the required heating power, controlling the working time of the heating body, recording the number of the working heating body, and if the water outlet temperature is equal to the set water outlet temperature, maintaining the existing heating state until the heating is finished;
the information recorder records the number of the working heating body and transmits the number to the control unit, and when the heating body needs to be started again after one-time heating is finished, the control unit calls the heating body with the corresponding number after the number of the heating body recorded by the information recorder according to the number sequence of the heating body to heat water; when the heating bodies need to be heated, the corresponding number of the heating bodies are started according to the calculated heating power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610798355.9A CN106196565B (en) | 2016-08-30 | 2016-08-30 | Constant-temperature instant water heater and control method thereof |
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| CN201610798355.9A CN106196565B (en) | 2016-08-30 | 2016-08-30 | Constant-temperature instant water heater and control method thereof |
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| CN106196565B true CN106196565B (en) | 2022-04-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107869838A (en) * | 2017-12-08 | 2018-04-03 | 厦门阿玛苏电子卫浴有限公司 | Electric water heater capable of quickly changing water outlet flow |
| CN112178939B (en) * | 2019-07-05 | 2022-03-01 | 芜湖美的厨卫电器制造有限公司 | Water heating method and device |
| CN117847308A (en) * | 2023-05-11 | 2024-04-09 | 安徽东方百岁泉科技有限公司 | Gradual-change constant-temperature electric heating faucet based on Internet of things and application method of gradual-change constant-temperature electric heating faucet |
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| CN2651647Y (en) * | 2003-09-11 | 2004-10-27 | 屈小秒 | Electric water heater |
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| CN106196565A (en) | 2016-12-07 |
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