CN110848978A - Heating method of water heating device - Google Patents

Heating method of water heating device Download PDF

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Publication number
CN110848978A
CN110848978A CN201811063233.0A CN201811063233A CN110848978A CN 110848978 A CN110848978 A CN 110848978A CN 201811063233 A CN201811063233 A CN 201811063233A CN 110848978 A CN110848978 A CN 110848978A
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CN
China
Prior art keywords
water
heating
temperature
heat exchange
inner container
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Pending
Application number
CN201811063233.0A
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Chinese (zh)
Inventor
邵小荣
万华新
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AO Smith China Water Heater Co Ltd
AO Smith Corp
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AO Smith Corp
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Application filed by AO Smith Corp filed Critical AO Smith Corp
Publication of CN110848978A publication Critical patent/CN110848978A/en
Pending legal-status Critical Current

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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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
    • F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
    • F24H7/0241—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water with supplementary heating means
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The application discloses water heating device's heating method, wherein, water heating device's second heating module includes: the heat exchange component and the second heating component are connected; the heat exchange component is used for exchanging heat with the water in the inner container; the second heating part is used for heating the fluid after heat exchange of the heat exchange part; the heating method comprises the steps of controlling the first heating component to heat water in the inner container to a first target temperature, wherein the first target temperature is higher than 80 ℃; and controlling the second heating part to heat the fluid subjected to heat exchange by the heat exchange part to a second target temperature. This water heating device and hot water system can shorten user's water receiving duration.

Description

Heating method of water heating device
Technical Field
The application relates to the technical field of hot water engineering, in particular to a heating method of a water heating device.
Background
In general, a domestic tap water line is laid in a house of a general user, and water required for daily use is supplied to a faucet through the domestic tap water line. With the increasing severity of water pollution and the increasing living standard of people, users pay more and more attention to the safety quality of drinking water. Therefore, more and more families are equipped with water purifiers such as water purifiers to purify tap water, so as to generate drinking water and supply the drinking water to corresponding drinking water taps.
At present, a water purifying faucet is installed in a sink in a kitchen, and a water purifier is generally installed below the sink, and the water purifier is used for treating tap water and then is directly connected to the water purifying faucet on the sink through a pipeline. However, in this way, the water purifier provides the purified water outlet faucet with normal temperature or low temperature drinking water, and cannot provide the user with high temperature drinking water, which results in poor user experience.
In order to solve the above problems, the purified water formed by the water purifier may be heated by adding an instant heating device, thereby increasing the temperature of the drinking hot water required by the user. However, the following limitations exist in the using process:
firstly, in order to prevent the output water from reaching the expected temperature, the instant heating device under the existing power can only ensure the sufficient heating of the water flow under the small flow, thereby providing the drinking hot water meeting the temperature requirement, but the output flow of the drinking hot water is small. This can cause the user to take the water for too long, influences user's use and experiences.
Secondly, if the output flow of the drinking hot water is ensured, the power requirement on the instant heating module is higher, and the requirement on a circuit is very high in the current household electricity environment, so that the installation is greatly limited.
Thirdly, after the instant heating device is started, water is heated to a high-temperature state, a certain time is needed, so that the time for receiving hot water with the required temperature by a user is long, and sometimes the received first cup of water is possibly cold water, which affects the use experience of the user.
And fourthly, the temperature of the enamel liner required to be heated is lower, so that the enamel liner cannot be directly used as boiled water for drinking, and an instant heating module can be added for heating. However, if the outlet water of the small kitchen appliance is directly heated through the instant heating module, the problems of dead water in the liner and water boiling can occur, and the use experience is influenced.
Fifthly, when the water is heated to boil, high-temperature water vapor can be generated, the risk of scalding a user can be caused when the high-temperature water vapor overflows, and the conventional boiling water device has the main mode of preventing gasification that the heating is stopped when the water is heated to boil; the steam is collected by providing a steam collection device, such as disclosed in the CN201437520U patent; the example CN102258321 patent discloses discharging by setting a discharge path; the steam is condensed by heat exchange with a heat exchange device, such as that disclosed in patent CN207471799 and the like. The existing methods for preventing scald caused by high-temperature steam adopt passive methods, and generally the treatment is carried out after the steam is generated by boiling.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, it is an object of the present application to provide a heating method of a water heating apparatus to solve at least one of the above problems.
The technical scheme of the application is as follows:
a heating method of a water heating apparatus, the heating apparatus comprising a first heating module and a second heating module; the first heating device comprises an inner container and a first heating component; the first heating component is used for heating water in the inner container; the second heating module comprises a heat exchange part and a second heating part which are connected, and the heating power of the second heating part is below 3.5 kilowatts; the heat exchange component is provided with an input part for inputting fluid; the second heating part is provided with an output part for outputting fluid; the heat exchange component is used for exchanging heat with the water in the inner container; the second heating part is used for heating the fluid after heat exchange of the heat exchange part; the method comprises the steps of controlling the first heating component to heat water in the liner to a first target temperature, wherein the first target temperature is higher than 80 ℃; and controlling the second heating part to heat the fluid subjected to heat exchange by the heat exchange part to a second target temperature.
As a preferred embodiment, the controlling the second heating part to heat the fluid heat-exchanged by the heat exchanging part to a second target temperature includes: when a boiled water heating signal set by a user is received, the second heating part is controlled to heat the fluid subjected to heat exchange by the heat exchange part to a preset temperature, and the preset temperature is lower than the actual boiling temperature.
As a preferred embodiment, the controlling the second heating part to heat the fluid after heat exchange by the heat exchange part to a preset temperature includes: detecting the water inlet temperature of the second heating module and/or the water outlet temperature of the heat exchange component; and determining the preset output power of the second heating part according to the water inlet temperature and/or the water outlet temperature of the heat exchange part and the preset temperature, and controlling the actual output power of the second heating part not to exceed the preset output power for heating.
As a preferred embodiment, the water outlet temperature of the second adding part is detected according to a preset sampling period; and determining that the heating power of the current second heating component is increased or decreased according to the detected outlet water temperature and the preset temperature.
In a preferred embodiment, the method includes controlling the first heating component to make the water temperature of the water in the inner container be more than 80 ℃ in a preset time period.
As a preferred embodiment, the method comprises that the flow rate output by the output part is more than 1 liter per minute.
In a preferred embodiment, the second target temperature is above 90 degrees celsius.
In a preferred embodiment, the water heating device includes a small kitchen appliance, and the first heating member includes a heating rod disposed in the inner container.
In a preferred embodiment, the inner container is made of stainless steel, and the inner container is a pressure-bearing type inner container.
In a preferred embodiment, the second heating member is a tankless heating device.
As a preferred embodiment, the heat exchange member includes a heat exchange tube; the heat exchange tube is spirally arranged inside the inner container.
In a preferred embodiment, the output unit is further connected to a flow rate limiting mechanism; the flow rate limiting mechanism can make the flow rate of the fluid output by the output part not exceed a preset flow rate.
As a preferred embodiment, the inner container is also provided with a scale inhibition and filtration module; the water inlet flow of the inner container is filtered by the scale inhibition and filtration module and then enters the inner container.
As a preferred embodiment, the inner container is provided with a water inlet part for inputting water and a water outlet part for outputting water outwards; the inner container is provided with the water outlet part and is also communicated with a water temperature adjusting component; the water temperature adjusting assembly is also provided with a cold water end for inputting cold water; the water temperature adjusting component can adjust the mixing proportion of the water output by the water outlet part and the cold water according to the temperature of the water output by the water outlet part.
Has the advantages that:
the water heating device and the hot water system provided by the embodiment of the application can effectively reduce the power requirement on the second heating part, the second heating part can provide fluid with a second target temperature and a higher flow rate under a certain power, and the water receiving time of a user is shortened, so that the user requirement is met;
furthermore, the water heating device in this application embodiment, what the second heating module adopted is the heating methods of overflowing formula, through active temperature control, not only can prevent that high temperature steam from producing, can realize moreover that accurate accuse temperature is infinitely close the user and set for the temperature.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a hot water system provided in an embodiment of the present application;
FIG. 2 is a schematic view of a water heating apparatus of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is an exploded view of FIG. 2;
FIG. 5 is an exploded view of FIG. 2;
fig. 6 is a flow chart of a control method applied to the heating device.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1 to 5. The embodiment of the present application provides a water heating apparatus 100, and the water heating apparatus 100 may be applied to an electric water heater, and may be particularly applied to a small kitchen appliance. The water heating device 100 can provide drinking hot water (such as boiling water) for users when using water, and meet the instant hot water requirements of the users.
Specifically, the water heating apparatus 100 includes: inner container 1, second heating member 4. The inner container 1 is internally provided with a first heating part 2 for heating water in the inner container 1. The second heating member 4 is capable of heating the fluid inside the second heating member 4. The second heating member 4 is connected to an input part 21 and an output part 22 which are communicated with the outside of the inner container 1. Wherein the input portion 21 is used for inputting a fluid. The output portion 22 is used for outputting the fluid.
It can be seen that the water heating device 100 is integrated with different hot water supply flow passages by the inner container 1 and the second heating member 4, so that the water heating device has a high integration level, and when the water heating device 100 is applied to small kitchen appliances, domestic water and drinking water can be heated and integrated, so that the occupied area is small, the space under the kitchen of a user is saved, and the water heating device has a very high application value.
In the present embodiment, the heat exchange member 3 may be communicated with the second heating member 4. The heat exchanging member 3 and the second heating member 4 are communicated between the input portion 21 and the output portion 22. The output unit 22 outputs the fluid heated by the second heating member 4. The heat exchange component 3 is used for exchanging heat with the water in the inner container 1. The heat exchange part 3 heats the fluid inside the heat exchange part 3 through heat exchange with the water in the inner container 1, so that the fluid is conveniently heated to a higher temperature, and the user requirements are met.
In the present embodiment, the inner container 1 and the first heating member 2 may form a first heating module. The heat exchanging member 3 and the second heating member 4 form a second heating module. The first heating module and the second heating module form two flow channels which are not communicated with each other, so that the water heating device 100 integrates different water heating flow channels, different water using experiences are provided for users, and different water using requirements of the users are met through a single device. In a preferred embodiment, part of the channels of the second heating module (for example, part of the channels of the heat exchanging component 3 and/or part of the channels of the second heating component 4) may be located in the inner container 1 of the first heating module.
In the embodiment, the second heating module can quickly heat the input cold water to form high-temperature hot water, so that the requirement of instant heating can be met, the problem of 'rolling water repeatedly' can not be caused, and the requirement of a user on hot water is improved. In addition, water in the inner container can not be utilized, the problem of dead water in the inner container is avoided, and the water quality of water for users is improved.
In the embodiment of the application, the user operation is simple and convenient for realizing automatic control. The water heating apparatus 100 may further include a controller connected to the first heating member 2 and the second heating member 4. The controller may control the first heating member 2 and the second heating member 4 to heat. Specifically, the controller is used for controlling the first heating part 2 to heat the water in the inner container 1 to a first target temperature. The controller can also control the second heating part 4 to heat the fluid after heat exchange by the heat exchange part 3 to a second target temperature.
In the present embodiment, the controller may control the start and the stop of the first heating member 2 and the second heating member 4 when controlling the first heating member 2 and the second heating member 4, or may control the heating time period of the first heating member 2 and the second heating member 4. The controller may control the first heating member 2 so that the temperature of the water in the inner container 1 is at a first target temperature based on the detection data of the temperature sensor 6.
In one embodiment, the second target temperature is higher than the first target temperature. The second heating module formed by the heat exchange component and the second heating component can quickly heat input cold water (such as pure water formed by filtering tap water through the water purifier) to form high-temperature hot water (such as more than 90 degrees), so that the requirement of instant heating after use is met, the problem of 'rolling water' is avoided, and the requirement of a user on hot water is improved.
In this embodiment, the difference between the first target temperature and the second target temperature may be below 20 degrees celsius. The second heating part 4 can be with the fluid heating after the water heat transfer in inner bag 1, when first target temperature and second target temperature have less difference in temperature, so can reduce the power requirement to second heating part 4, the second heating part 4 can provide the fluid of the second target temperature of higher flow simultaneously under certain power to satisfy user's demand.
In this embodiment, the second target temperature is above 90 degrees celsius. The water heated by the second heating part 4 can meet the requirement of a user on high-temperature hot water (such as boiling water), and the use experience of the user is improved. After the controller starts the second heating member 4, the second heating member 4 can heat the fluid flowing through to more than 90 ℃.
And, because the temperature of the water in the inner bag 1 is higher (for example, more than the following 80 ℃), so that the temperature of the fluid after heat exchange by the heat exchange component 3 is also higher, the temperature rise requirement for the second heating component 4 can be reduced, and the second heating component 4 can heat the fluid with a proper flow rate to a second target temperature under a lower power, so as to meet the user requirement.
In a preferred embodiment, the first target temperature is above 80 degrees celsius. For making second heating element 4 can reach the high temperature state with inside fluid fast, promote the temperature of the water in inner bag 1 to higher temperature state to can promote the temperature of the inside water after heat transfer component 3 exchanges heat, make second heating element 4 can promote the fluid of sufficient volume to higher temperature, thereby can also reduce the power requirement to second heating element 4 on the basis of guaranteeing the flow, thereby reduce the power of second heating element 4 because of the limited problem of current electric wire netting installation.
By reducing the power requirement for the second heating member 4, the overall volume of the second heating member 4 can be reduced conveniently, thereby facilitating miniaturization of the whole water heating apparatus 100 and improving the installation freedom of the device. Meanwhile, the water heating device 100 is convenient to be applied to a household circuit, and has a very good application value. Moreover, the flow of the high-temperature fluid provided by the second heating module is promoted.
Specifically, the controller controls the second heating member 4 to include: the controller activates the second heating member 4. When the second heating member 4 has the housing 42 and the heating element 41, the controller controls the heating element 41 to start heating, so as to control the second heating member 4.
In this embodiment, the controller activates the second heating member 4 to heat the fluid therein upon receiving a water use signal. When water is used, the whole water in the second heating module is in a flowing state, the fluid input by the input part 21 can be in a normal temperature state, and the fluid in the normal temperature state is heated once after passing through the heat exchange part 3 and is heated for the second time by the second heating part 4, so that the temperature is raised to the second target temperature.
The energy consumption is reduced for the convenience of energy-saving control. The controller can control the first heating part 2 to enable the water temperature of the water in the inner container 1 to be more than 80 ℃ within a preset time period. The predetermined time period may be set as desired by the user, wherein the predetermined time period may be a daily water usage time period for the user. For example, the predetermined period of time may be 7-22 points per day. During the non-predetermined period of time, the water in the inner container 1 may not need to be maintained above 80 degrees celsius, so that the first heating member 2 may be in a sleep or standby state.
In the present embodiment, the power of the second heating member 4 is 3.5 kw or less. Accordingly, the second heating member 4 can heat the fluid therein to 90 degrees celsius (which is simplified as "degree" in the description of the present application) at a power of 3.5 kw or less, so as to meet the demand of the user for high-temperature drinking water. Further, the second heating member 4 can heat the fluid with a flow rate of 1 liter per minute or more under a power of 3.5 kw or less, and output the heated fluid through the output portion 22, so that not only the water receiving time of the user is reduced, but also the drinking water with a higher temperature is improved.
In the embodiment shown in fig. 2-5, the liner 1 is a container structure, and the whole liner can be a cylindrical tubular structure. The inner container 1 can be formed by joining two parts 13, 14 together. In order to prevent the inner container 1 from being corroded by water, an anode bar 5 can be arranged in the inner container 1. The first heating part 2 may be a heating rod and may be disposed near the bottom of the inner container 1. Specifically, the anode bar 5 and the first heating member 2 can be installed in the lower portion 14 of the liner 1.
In the embodiment, in order to meet the requirements of different water consumption of the user, the user experience is enhanced. The inner container 1 has a water inlet portion (specifically, a water inlet 11) for inputting water and a water outlet portion (specifically, a water outlet 12) for outputting water to the outside. Of course, in other embodiments, such as: when at least part of the second heating member 4 is located in the inner container 1, the inner container 1 may not have a water inlet part and a water outlet part. Correspondingly, the liner 1 can be a closed container, and the water in the liner is heated to a first target temperature by the first heating part 2 (heating rod) so as to exchange heat with the heat exchange part 3 or preheat the second heating part 4. When the second heating member 4 is preheated, the second heating member 4 can also heat the fluid inside, so as to ensure that the high-temperature fluid is quickly formed and output through the output part 22.
In this embodiment, the liner 1 is provided with a water inlet pipe 7 and a water outlet pipe 8. One end of the water inlet pipe 7 is provided with a water inlet part (specifically a water inlet 11), and the other end extends into the inner container 1. The water outlet pipe 8 can be provided with the water outlet part (specifically, the water outlet 12), and the other end is positioned in the inner container 1. Correspondingly, the input portion 21 (specifically, an input port) and the output portion 22 (specifically, an output port) of the second heating module may also be disposed on the top wall of the inner container, so as to be connected to an external pipeline, so as to facilitate input and output of fluid.
As shown in fig. 3 to 5, the water inlet pipe 7 is a straight pipe structure, the lower end of which is arranged near the bottom of the inner container 1, and the upper end of which is connected with the joint module 9. The water inlet 11 and the water outlet 12 are positioned on the joint module 9. Correspondingly, the joint module 9 is provided with the water outlet 12 to output water in the inner container 1. The water outlet pipe 8 can be sleeved outside the water inlet pipe 7, and an annular space between the water outlet pipe 8 and the water inlet pipe 7 forms an output flow passage to output water in the inner container 1.
In the present embodiment, a temperature sensor 6 for measuring the temperature of water in the inner container 1 is provided inside the inner container 1. The temperature sensor 6 is connected to the controller (not shown). In order to obtain a more accurate and representative water temperature in the inner container 1, the temperature sensor 6 is installed above the middle position inside the inner container 1. The controller obtains the water temperature in the inner container 1 through the measurement data of the temperature sensor 6 so as to control the first heating module to heat.
In the embodiment of the application, the inner container 1 is a high temperature resistant inner container, so that the water in the inner container 1 is heated to a higher temperature, the fluid in the heat exchange component 3 is conveniently subjected to heat exchange to a higher temperature, and the power of the second heating component 4 is favorably reduced. Specifically, for having a better high temperature resistant effect, the inner container 1 is made of stainless steel. In this case, the inner container 1 is a stainless steel inner container 1, and can withstand the water in the inner container 1 at a high temperature, for example, above 70 ℃. The liner 1 can be a pressure-bearing liner 1.
In the present embodiment, in the first heating module, the inner container 1 is used to contain a certain amount of water that can be heated to a predetermined temperature (first target temperature) by the first heating member 2. Accordingly, in the operating state, the first heating module can maintain the temperature of the water in the inner container 1 at the first target temperature through the first heating component 2. For example, the water temperature in the inner container 1 may be maintained at 80 degrees or more. The water in the inner container 1 can flow out for use by a user or can be kept in the inner container 1 for heat exchange with the heat exchange component 3, so that the fluid in the flow channel of the second heating module formed by the heat exchange component 3 and the second heating component 4 is heated. The volume of the inner container 1 is below 15 liters.
In this embodiment, the water in the first heating module may provide domestic water for the user, such as washing dishes, washing clothes, and even bathing. In the embodiment where the water heating device 100 is preferably a small kitchen appliance, the first heating module can provide the corresponding function of the small kitchen appliance, and provide warm water with a suitable temperature for the user.
In the present embodiment, the second heating member 4 can heat the fluid inside the second heating member 4 to a temperature higher than the temperature of the water inside the inner container 1. For the purpose of rapid heating, the volume of the internal cavity 43 of the second heating target is smaller than the volume of the inner container 1. In a particular embodiment, the second heating member 4 may include a housing 42, and a heating element 41 located in the housing 42. The heating element 41 may be a heating rod or a PTC heating element, or a heating tube as in the embodiment shown in fig. 3-5, but the present application is not limited thereto.
In the present embodiment, the inside of the casing 42 communicates with the heat exchanging member 3 and the output portion 22. The interior (cavity 43) of the case 42 and the inner container 1 do not communicate with each other. The interior of the shell 42 is separated from the water in the liner 1 by the shell 42. Preferably, at least a portion of the housing 42 may be located inside the inner container 1, so that the water inside the inner container 1 preheats the second heating member 4, thereby reducing the power requirement of the second heating member 4.
In the present embodiment, the cavity 43 inside the casing 42 is isolated from the inside of the inner container 1 by the casing 42. Specifically, the inside of the second heating member 4 and the inside of the inner container 1 are not communicated with each other. The fluid heated by the second heating component 4 is input from the outside of the inner container 1 through the heat exchange component 3. The water in the inner container 1 cannot enter the inside of the second heating member 4.
In this embodiment, the second heating member 4 may be an instantaneous heating device. The tankless heating assembly may include at least one of: the heater comprises a cast aluminum heater, a cup-type heater, an aluminum plate superposed heater, a ceramic heater, an infrared heater, a glass tube heater, an electromagnetic heater and a rare earth thick film heater.
In order to improve the heating efficiency of the second heating part 4, the heating time is reduced, and a user can conveniently and quickly receive hot water with required temperature. The second heating part 4 is used for heating the fluid after heat exchange of the heat exchange part 3. The second heating member 4 may be connected downstream of the heat exchanging member 3. The input portion 21 may have an input port for inputting a fluid, and may be specifically, but not limited to, a joint structure or a pipe structure attached to the outside of the inner container 1, and may have a structure such as a connection port. Accordingly, the output portion 22 may have an output port for outputting the fluid, and may be, specifically, but not limited to, a joint structure or a pipe structure attached to the outside of the inner tank 1, or may be, of course, a structure such as a connection port.
In the present embodiment, the heat exchange member 3 is provided with an input portion 21 for inputting a fluid. The second heating member 4 is provided with an output portion 22 for outputting a fluid. The input unit 21 and the output unit 22 input and output fluid from and to the outside of the inner container 1, and preferably, the input unit 21 and the output unit 22 are located outside the inner container 1. The fluid input by the input part 21 can have better heat-conducting property and is more reliable to install as a heat exchange medium. For example, the heat exchange medium may be pure water, heat transfer oil, or a phase change material. The fluid input into the input portion 21 is unheated fluid, and the temperature of the input fluid is a normal temperature state or a low temperature state, and may be the same as the temperature of tap water. For example, the fluid input from the input unit 21 is tap water that has been filtered but not heated.
In a preferred embodiment, the fluid input by the input portion 21 is pure water, so that high-temperature pure water (such as boiling water) can be output as drinking water through the output portion 22, and the requirement of the user for hot water is met. Meanwhile, the water circulating inside the second heating module (the heat exchange part 3 and the second heating part 4) is pure water, so that the phenomenon that the inner wall of the second heating module is scaled to block a flow channel due to long-term use can be avoided, and the long-term stable operation of the equipment can be ensured.
In the embodiment of the present application, the second heating module has a flow passage for fluid to flow therein, and the flow passage is independent of the first heating module, that is, is not communicated with the first heating module. Accordingly, the heat exchanging member 3 and the second heating member 4 form the flow passage. The second heating module can keep apart drinking water and the aqueous phase in the inner bag 1, simultaneously, utilizes the water in the inner bag 1 to carry out the heat exchange to heat exchange member 3, preheats second heater block 4 simultaneously, can effectively reduce the power requirement of the module of heating promptly, is convenient for heat the miniaturized design of module promptly to can be with second heater block 4 built-in inner bag 1, further reduce whole water heating device 100's volume, the miniaturization of the whole device of being convenient for.
As shown in fig. 1. In a specific embodiment, when pure water is input from the input unit 21, the output unit 22 is used to connect to the faucet 600. The faucet 600 may be a direct drinking water faucet. The input part 21 may be communicated with a purified water source 200, and the purified water source 200 may be a purified water input pipeline, a water purifier, or a storage container storing purified water. The pure water is water purified and filtered by the water purifier. Wherein, can set up at least one kind of filter element group spare in the purifier, and the filter element group spare can be RO membrane module, nanofiltration membrane module, at least one kind of filtration of milipore filter subassembly. The water purifier can be connected with a tap water service pipeline to purify raw water (tap water) to form drinking pure water for users to directly drink.
In the present embodiment, in order to reduce the power requirement of the second heating member 4, at least a part of the second heating member 4 is located inside the inner container 1. The water in the inner container 1 can preheat the second heating component 4, and the temperature of the fluid in the second heating component 4 is increased.
When the user needs to use water, because at least partial second heating member 4 is located inner bag 1, the inside fluid temperature of second heating member 4 has been heated by the water in inner bag 1, and is the same with the temperature of inner bag 1 even, and second heating member 4 can heat its inside fluid to second target temperature fast this moment to the user can receive the hot water of required temperature fast, promotes user's use and experiences.
When the user does not use water for a long time (i.e., the output part 22 does not output fluid), the second heating member 4 is preheated by the water in the inner container 1 for a long time, so that the fluid inside the second heating member 4 has a higher initial temperature. When the user used and drinks pure water, the water in inner bag 1 can form higher outside temperature to second heater block 4 equally, is favorable to second heater block 4 to promote the fluid temperature to inside fluid rapid heating, guarantees that the temperature that the user acquireed the fluid reaches required temperature.
In the present embodiment, the input portion 21 and the output portion 22 communicate with the outside of the inner container 1, respectively. At least part of the second heating member 4 is located in the inner container 1, and since the inside of the inner container 1 is maintained at a high temperature, the water in the inner container 1 can heat the second heating member 4 at least partially or wholly, even to the same temperature as the water in the inner container 1.
Preferably, the second heating member 4 is disposed near the top of the inner container 1. So, can be convenient for maintain second heating member 4 in higher temperature state, reduce second heating member 4 and heat its inside fluid to the difference in temperature of second target temperature to reduce the requirement to 4 power of second heating member, guarantee simultaneously that the fluid exports with higher flow, satisfy user's demand.
As shown in fig. 3, the second heating member 4 is mounted on the top wall of the inner container 1. In some embodiments, the second heating module may be mounted outside the inner container 1. The installation requirement for the second heating module is reduced at the moment, and the installation and the manufacture are convenient. Correspondingly, in some embodiments, the heat exchange module can be also installed outside the inner container 1, and at this time, the heat exchange module can be kept attached to the outer wall of the inner container 1 so as to transfer heat through the inner wall of the inner container 1.
Compare externally in the second heating module, place the second heating element 4 in the inner bag 1 in the inside fluid of second heating element 4 can be preheated by the water in inner bag 1 to before the water after the heat transfer of inflow heat transfer component 3, the inside water of second heating element 4 has risen to higher temperature, so second heating element 4 can be fast with this partial fluid (for example pure water) heating raise the temperature, and need not to wait for the temperature rise fluid entering after the heat transfer, and then can provide out high temperature fluid with very fast, satisfy user's demand.
Through experimental comparison, under the condition that other conditions (such as power, size of the inner container 1, initial fluid temperature and water temperature inside the inner container 1) are the same, the time for initially receiving the drinking hot water at the required temperature by the scheme that the second heating component 4 is internally arranged in the inner container 1 is far shorter than the time for initially receiving the drinking hot water at the required temperature by the scheme that the second heating component 4 is externally arranged.
In the embodiment of the present application, the heat exchanging component 3 may be a plate structure or a tube structure, and the present application is not limited thereto. Accordingly, the heat exchange component 3 may have a single flow passage inside, or may have a plurality of flow passages, and the application is not limited thereto. Preferably, the heat exchange component 3 is a heat exchange tube structure. In order to increase the heat exchange area and increase the temperature of the fluid output from the heat exchange part 3, the heat exchange part 3 preferably has a flow channel. In order to have a better heat exchange area and increase the temperature of fluid in the heat exchange tube, the heat exchange tube is spirally arranged in the inner container 1. Correspondingly, the heat exchange tube is a spiral heat exchange tube.
In order to improve the heat exchange efficiency between the heat exchange component 3 and the water in the inner container 1 and increase the heat absorbed by the fluid in the heat exchange component 3, in a preferred embodiment, at least a part of the heat exchange component 3 is located in the inner container 1 to contact with the water in the inner container 1 for heat exchange, so as to heat the fluid in the heat exchange component 3. Therefore, the heat exchange part 3 can exchange heat with water in the inner container 1 better, fluid inside the heat exchange part 3 can be heated to a higher temperature and then input into the second heating part 4, the power of the second heating part 4 can be reduced, and the second heating part 4 can rapidly heat the fluid to a second target temperature under the power of 3.5 kilowatts and output the fluid through the output part 22.
In the embodiment shown in fig. 3-5, the heat exchange component 3 is located inside the liner 1 and is immersed in the water in the liner 1 and directly contacts with the water in the liner 1. The heat exchanging member 3 has a flow passage for fluid flowing therein, which communicates upstream of the second heating member 4.
In this embodiment, the fluid inside the heat exchanging component 3 flows upward from bottom to top so as to absorb more heat, thereby being better heated by the water in the inner container 1, and being convenient for inputting the fluid inside the heat exchanging component 3 into the second heating component 4 after being heated to a higher temperature. It is also considered that the downstream portion is higher than the upstream portion in the flow direction of the fluid inside the heat exchange member 3.
In order to improve the heat exchange efficiency, the temperature of the fluid in the heat exchange component 3 is convenient to be improved. And a spacing gap is formed between the heat exchange part 3 and the side wall of the inner container 1. Therefore, the outer surface of the heat exchange component 3 can be ensured to contact with the water in the inner container 1 as much as possible for heat transfer, and the heat exchange with the water in the inner container 1 indirectly through the wall of the inner container 1 due to the contact with the wall of the inner container 1 is avoided.
In the embodiment of the application, the water receiving time of the user is saved in order to meet the water using requirement of the user. The flow rate output by the output unit 22 is 1 liter per minute (L/min) or more. For example, the output of the output 22 may be 1.5 liters per minute. When the flow output by the output part 22 is more than 1 liter per minute (L/min), the water heating device 100 with the above structure can ensure that the temperature of the output fluid reaches the second target temperature by using the second heating part 4 under the power of 3.5 kilowatts, thereby ensuring the demand of the user on high-temperature drinking water.
In order to avoid that the output fluid can not reach the second target temperature, the use experience of a user is ensured. The output portion 22 is also connected to a flow rate limiting mechanism. The flow rate limiting mechanism can make the flow rate of the fluid output from the output portion 22 not exceed a predetermined flow rate. Wherein, the flow limiting structure can be an opening degree adjusting device or a flow passage section adjusting device. The flow rate limiting means can gradually increase the resistance to the fluid as the flow rate of the output portion 22 increases, and limit the flow rate of the fluid from becoming excessive.
For example, the flow restriction device may be a baffle structure that reduces the flow area of the output portion 22 to a predetermined ratio of the flow area when no baffle is provided. In one embodiment, the spoiler reduces the flow area of the output portion 22 to less than 0.8 times the flow area when no spoiler is provided. In another embodiment, the flow restriction device may also be a flow control valve, which is preferably an electrically controlled valve (e.g., a solenoid valve).
In a preferred embodiment. And the inner container 1 is also provided with a scale inhibition and filtration module. The water inlet flow of the inner container 1 is filtered by the scale inhibition and filtration module and then enters the inner container 1. The scale inhibition and filtration module can filter water flowing into the inner container 1, so that scaling is not easy to occur in the inner container 1. Scaling on the surface of the built-in second heating module (the heat exchange component 3 and the second heating component 4) can be avoided by arranging the scale inhibition filter module, so that the heat exchange efficiency under long-term use is effectively ensured, and meanwhile, the maintenance requirement is also reduced, and the service life of the water heating device 100 is effectively prolonged.
Specifically, the scale inhibition and filtration module can be communicated with the water inlet 11 of the inner container 1, and water flowing in from the water inlet 11 firstly passes through the scale inhibition and filtration module and then enters the inner container 1. The scale inhibition and filtration module can be arranged on the water inlet pipe 7 of the inner container 1. The scale inhibiting filter module may include an outer layer, an inner layer, and a filter media. The filter medium can be a scale inhibition filter material and/or a sterilization filter material. Wherein the filter media is received in a sandwich cavity formed between the outer layer and the inner layer. The inner and/or outer layer is at least partially a region permeable to water flow.
The installation of the scale inhibiting and filtering module is convenient. The scale inhibition shell 42 can be sleeved around the outer layer. The central region of the inner layer forms a first water flow passage and a second water flow passage is formed between the scale inhibition housing 42 and the outer layer. The lower part of the scale inhibition shell 42 is provided with a water through hole communicated with the inner container 1. The first water flow channel is communicated with the water inlet pipe 7 of the inner container 1, and the second water flow channel is communicated with the inner container 1, so that the inlet water flow sequentially passes through the second water flow channel, the interlayer cavity and the first water flow channel to enter the inner container 1.
In a preferred embodiment, the inner container 1 is provided with the water outlet part and is also communicated with a water temperature adjusting component. The water temperature adjusting assembly also has a cold water end for inputting cold water. The water temperature adjusting component can adjust the mixing proportion of the water output by the water outlet part and the cold water according to the temperature of the water output by the water outlet part.
Can avoid 1 output domestic water high temperature of inner bag through temperature adjusting part, reduce the user and scald the risk, promote water safety. The water temperature adjusting component mixes part of cold water into the water output by the inner container 1, so that the temperature of the water output by the inner container 1 is reduced, and hot water with proper temperature is provided for a user.
In the present embodiment, the shape, structure and function of the water temperature adjusting device disclosed in the application number "201721572824.1" can be referred to the water temperature adjusting assembly, and the disclosure in the application is incorporated herein by reference, and will not be described herein again.
Please continue to refer to fig. 1-5. There is also provided in an embodiment of the present application a hot water system, including: a purified water source 200 capable of outputting purified water; the water heating apparatus 100 according to any of the above embodiments. Wherein, the heat exchange component 3 is connected with the purified water source 200 to input the purified water. The purified water source 200 may be a container storing a predetermined amount of purified water. In a preferred embodiment, the purified water source 200 may produce purified water at the same time that the output 22 outputs fluid.
In a specific embodiment, the hot water system further comprises: a faucet 600. The purified water source 200 includes a water purifier. The water purifier is connected with the water tap 600 through a pure water output pipeline 300. The heat exchange component 3 of the water heating device 100 is communicated with the pure water output pipeline 300; the second heating member 4 is in communication with the faucet 600.
It should be noted that the water outlet 12 of the inner container 1 may also be communicated with a shower head, a faucet 500 and other water end devices, so that a user can use the water in the inner container 1 conveniently. The water end equipment (such as the water tap 500 and the water tap 600) communicated with the inner container 1 is different from the water end equipment (such as the water tap 600 and the water tap 500) communicated with the second heating part 4. Therefore, the fluid heated by the second heating part 4 and the water in the inner container 1 can be conveniently used by a user according to the use requirement. The source of purified water 200 may be placed below the sink 400, which may typically be in a cabinet. The first and second heating modules are connected to different faucets 500, 600 located above the countertop 700.
As shown in fig. 6, the present application also provides a heating method applied to the above water heating apparatus, the method including,
s101: controlling the first heating part 2 to heat the water in the liner to a first target temperature, wherein the first target temperature is above 80 ℃; wherein the first target temperature can be measured by arranging a temperature sensor in the inner container.
S102: and controlling the second heating part 4 to heat the fluid subjected to heat exchange by the heat exchange part 3 to a second target temperature. Wherein the second target temperature can be measured by arranging a temperature sensor at the water outlet end of the second heating component 4.
In this embodiment, the water in the liner is heated to more than 80 degrees, preferably more than 90 degrees, so that the temperature can be raised to about 70 degrees after the cold water passing through the second heating module enters the heat exchange part 3 for heat exchange, and the temperature rise is different according to the difference between the heat exchange efficiency of the heat exchange part 3 and the temperature of the inlet water; the water with the increased temperature enters the instant heating module 4 (the second heating part 4) again to be heated, so that the power of the second heating part can be reduced under the condition of a certain flow, the requirement on the wire diameter of a user home is reduced, and the safety of a wire net of the user home is facilitated. In order to solve the requirements of users on common domestic water, such as washing hands, vegetables, bathing and the like, but not drinking water, the common water storage type heating device is used for preventing the users from being scalded by the discharged water, the inner container is heated to about 60-70 ℃, and the water cannot be heated too high. And this application reduces the power of instant heating module 4 for improving the heat transfer temperature of heat exchange tube, and inner bag 1 adopts high temperature resistant stainless steel inner bag, heats the water in the inner bag 1 more than 80 degrees, and for preventing scalding the user simultaneously, this application has still set up the play water of temperature adjusting part to the inner bag and has adjusted the temperature.
Further, the step S102: controlling the second heating part to heat the fluid subjected to heat exchange by the heat exchange part to a second target temperature, and the method comprises the following steps: when a boiled water heating signal set by a user is received, the second heating part is controlled to heat the fluid subjected to heat exchange by the heat exchange part to a preset temperature, and the preset temperature is lower than the actual boiling temperature. The specific actual boiling temperature generally refers to boiling water at 100 ℃, and can be set according to regional differences, of course, according to different boiling temperatures in regions; the preset boiling point temperature is lower than the actual boiling point temperature and may be set to 97 degrees celsius, for example, or some other temperature close to 100 degrees celsius.
Further, controlling the second heating part 4 to heat the fluid subjected to heat exchange by the heat exchange part 3 to a preset temperature includes:
s103: detecting the water inlet temperature of the second heating module and/or the water outlet temperature of the heat exchange component 3;
s104: according to the inlet water temperature TStep 1And/or the outlet water temperature T of the heat exchange component 3Step 2And a predetermined temperature TPreparation ofDetermining the preset output power W of the second heating member 4Preset ofControlling the actual output power W of the second heating member 4Practice ofNot exceeding the preset output power WPreset ofHeating is carried out. The water inlet temperature can be measured by arranging a water inlet temperature sensor at the water inlet end of the second heating module, and the water outlet temperature of the heat exchange component 3 can be measured by arranging a temperature sensor at the water outlet end of the heat exchange component 3.
In particular, according to WPreset of＝mcΔt＝mc(TPreparation of-TStep 2) Calculate to obtain WPreset of. Or WPreset of＝mcΔt＝mc(TPre-boiling-(TStep 1+ΔT))，WPractice of≤WPreset ofAnd the delta T is determined according to the current temperature of the inner container and the heat exchange efficiency of the heat exchange tube.
Further, the method further comprises: detecting the water outlet temperature of the second heating part 4 according to a preset sampling period; and determining that the heating power of the second heating component 4 is increased or decreased currently according to the detected outlet water temperature and the preset temperature. Specifically, the actual output power may be adjusted by adjusting the voltage applied to the second heating member 4 using the voltage adjustment power.
Specifically, the preset temperature and the detected water outlet temperature are compared, when the water outlet temperature is lower than the preset temperature, the power is gradually increased until the water outlet temperature approaches the preset temperature, and when the water outlet temperature is higher than the preset temperature, the power is reduced, so that the heating power of the second heating component is adjusted in real time.
Then can produce high-temperature steam after the boiling when water is heated, high-temperature steam overflows and has the risk of scalding the user, the boiling water device of general water storage formula, and the active mode that prevents gasification stops to heat when the water heating after boiling, but what the second heating module in this application embodiment adopted is the heating mode of overflow formula, if the stop heating can have the cold water problem of going out of intervallic, the temperature of going out water is neglected cold and is neglected hot, influences user experience. In the embodiment of the application, through active temperature control, the water in the second heating part 4 is controlled to be continuously heated to be close to the boiling temperature, intermittent cold water is not generated, and boiling is actively controlled; meanwhile, the actual output power is adjusted by monitoring the outlet water temperature at intervals, so that high-temperature steam can be prevented from being generated, and accurate temperature control can be realized to be as close to the boiling temperature as possible.
Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims (14)

1. A heating method of a water heating device is characterized in that the heating device comprises a first heating module and a second heating module; the first heating device comprises an inner container and a first heating component; the first heating component is used for heating water in the inner container; the second heating module comprises a heat exchange part and a second heating part which are connected, and the heating power of the second heating part is below 3.5 kilowatts; the heat exchange component is provided with an input part for inputting fluid; the second heating part is provided with an output part for outputting fluid; the heat exchange component is used for exchanging heat with the water in the inner container; the second heating part is used for heating the fluid after heat exchange of the heat exchange part;
the method comprises the steps of controlling the first heating component to heat water in the inner container to a first target temperature, wherein the first target temperature is higher than 80 ℃; and controlling the second heating part to heat the fluid subjected to heat exchange by the heat exchange part to a second target temperature.
2. The method of claim 1, wherein: the controlling the second heating part to heat the fluid subjected to heat exchange by the heat exchange part to a second target temperature includes:
when a boiled water heating signal set by a user is received, the second heating part is controlled to heat the fluid subjected to heat exchange by the heat exchange part to a preset temperature, and the preset temperature is lower than the actual boiling temperature.
3. The method of claim 2, wherein: control the second heating part will be through fluid heating to predetermineeing the temperature after the heat transfer part heat transfer, include:
detecting the water inlet temperature of the second heating module and/or the water outlet temperature of the heat exchange component;
and determining the preset output power of the second heating part according to the water inlet temperature and/or the water outlet temperature of the heat exchange part and the preset temperature, and controlling the actual output power of the second heating part not to exceed the preset output power for heating.
4. The method of claim 3, wherein: the method further comprises the following steps:
detecting the water outlet temperature of the second adding component according to a preset sampling period;
and determining that the heating power of the current second heating component is increased or decreased according to the detected outlet water temperature and the preset temperature.
5. The method according to claims 1-4, characterized in that: the method comprises the step of controlling the first heating component to enable the water temperature of the water in the inner container to be more than 80 ℃ within a preset time period.
6. The method according to claims 1-4, characterized in that: the method comprises that the flow output by the output part is more than 1 liter per minute.
7. The method according to claims 1-4, characterized in that: the second target temperature is above 90 degrees celsius.
8. The water heating apparatus according to claim 1, wherein: the water heating device comprises a small kitchen appliance, and the first heating part comprises a heating rod arranged in the inner container.
9. The method of claim 8, wherein: the inner container is made of stainless steel materials and is a pressure-bearing type inner container.
10. The method of claim 1, wherein: the second heating component is an instant heating type heating device.
11. The method of claim 10, wherein: the water in the first heating module and the fluid in the second heating module are isolated from each other, and the heat exchange component comprises a heat exchange tube; the heat exchange tube is spirally arranged inside the inner container.
12. The method of claim 1, wherein: the output part is also connected with a flow limiting mechanism; the flow rate limiting mechanism can make the flow rate of the fluid output by the output part not exceed a preset flow rate.
13. The method of claim 1, wherein: the inner container is also provided with a scale inhibition and filtration module; the water inlet flow of the inner container is filtered by the scale inhibition and filtration module and then enters the inner container.
14. The method of claim 1, wherein: the inner container is provided with a water inlet part for inputting water and a water outlet part for outputting water outwards; the inner container is provided with the water outlet part and is also communicated with a water temperature adjusting component; the water temperature adjusting assembly is also provided with a cold water end for inputting cold water; the water temperature adjusting component can adjust the mixing proportion of the water output by the water outlet part and the cold water according to the temperature of the water output by the water outlet part.
CN201811063233.0A 2018-08-21 2018-09-12 Heating method of water heating device Pending CN110848978A (en)

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