CN113154691B - Gas water heater and control method thereof - Google Patents
Gas water heater and control method thereof Download PDFInfo
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- CN113154691B CN113154691B CN202110465624.0A CN202110465624A CN113154691B CN 113154691 B CN113154691 B CN 113154691B CN 202110465624 A CN202110465624 A CN 202110465624A CN 113154691 B CN113154691 B CN 113154691B
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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
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a gas water heater and a control method thereof, the gas water heater comprises: the shell is internally provided with an installation space, and the shell is also provided with a water inlet pipe and a water outlet pipe which extend to the outside; a burner for burning a combustible gas; the fan is used for conveying an air heat exchanger to the burner, and the heat exchanger is used for supplying water to flow and heating water by utilizing heat generated by the burner; the electric heating module is internally provided with an electric heating runner; the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path, and the electric heating flow path is connected in series in the heating water flow path; the burner is positioned below the heat exchanger, the fan and the electric heating module are arranged below the burner side by side, and the electric heating module is longitudinally arranged. The compact design of the water heater is realized, so that the whole volume of the water heater is reduced.
Description
Technical Field
The invention belongs to the technical field of household appliances, and particularly relates to a gas water heater.
Background
At present, a gas water heater is a household appliance commonly used in daily life of people, and the gas water heater generally comprises a shell, a burner, a heat exchanger and other parts arranged in the shell, wherein a water inlet pipe and a water outlet pipe arranged on the shell are connected with the heat exchanger, and hot water can be output from a water outlet pipe after cold water entering from a water inlet pipe is heated by the heat exchanger.
However, when the gas water heater is started, part of cold water in the pipeline of the hot gas water heater cannot be heated, and a certain amount of cold water needs to be discharged when the gas water heater is started, so that the waiting time of a user is long. Chinese patent application No. 2008101557093 discloses a hybrid energy thermostatic control water heater, in which an electric heating device is additionally disposed on a gas water heater, so as to perform auxiliary heating on a gas burner through the electric heating device. The electric heating device adopted by the water heater in the conventional technology is arranged on one side of the main body of the gas water heater, so that the integral increase of the burner is large, and the design requirement of equipment miniaturization is not met.
In view of this, how to design a technology that is compact to reduce the overall volume of the water heater is a technical problem to be solved by the present invention.
Disclosure of Invention
The invention provides a gas water heater, which realizes the compact design of the water heater so as to reduce the whole volume of the water heater.
In order to achieve the technical purpose, the invention is realized by adopting the following technical scheme:
in one aspect, the present invention provides a gas water heater comprising:
the shell is internally provided with an installation space, and the shell is also provided with a water inlet pipe and a water outlet pipe which extend to the outside;
a burner for combusting a combustible gas;
the fan is used for conveying air to the combustor
A heat exchanger for supplying water to flow and heating the water using heat generated from the burner;
the electric heating module is internally provided with an electric heating runner;
the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path, and the electric heating flow path is connected in series in the heating water flow path; the burner is positioned below the heat exchanger, the fan and the electric heating module are arranged side by side below the burner, and the electric heating module is longitudinally arranged.
In one embodiment of the present application, the fan is vertically disposed on the back plate of the housing.
In one embodiment of the present application, the electric heating module includes:
a first electric heating member for generating heat by energization;
the first pipe body is provided with a water inlet;
the water outlet is formed in one end part of the second pipe body, and the auxiliary inlet is formed in the other end part of the second pipe body; the second pipe body is inserted into the first pipe body in a sealing way, the auxiliary inlet is positioned in the first pipe body, and the first electric heating component is arranged on the first pipe body and used for heating water in the first pipe body;
the spiral plate is arranged around the second pipe body and extends along the length direction of the second pipe body.
In one embodiment of the present application, the electric heating module includes: a heating container and a second electric heating member provided in the heating container, the heating container being connected in series in the heating water flow path.
In this application embodiment, be provided with first water pipe on heating vessel's the lateral wall, heating vessel's lower tip is provided with the second water pipe, second electrical heating element's binding post stretches out to heating vessel's the outside of upper end, heating vessel's upper end still is provided with the safety cover, the safety cover covers binding post.
In an embodiment of the present application, the second electric heating component is an electric heating tube, and a portion of the electric heating tube located in the heating container forms a spiral tube section.
In an embodiment of the present application, the upper end portion of the second water pipe extends to the top of the heating container, and the spiral pipe section surrounds the periphery of the first water pipe.
In one embodiment of the present application, the first water pipe is near the lower end of the heating container.
In another aspect, the present invention further provides a control method of the gas water heater, where the control method includes:
after the gas water heater is turned off and restarted, the electric heating module is electrified to heat, and then the burner is restarted; and, after the burner is started, the electric heating module is turned off.
In an embodiment of the present application, the control method further includes:
calculating heat Qt required by current heating of water inflow, and judging whether Qt is larger than heat Q0 which can be generated by an electric heating module in the gas water heater; if yes, starting a burner in the gas water heater to heat the inflow water flow; if not, the electric heating module is started to heat the inflow water flow.
In an embodiment of the present application, the burner has a multi-stage heating mode, and the control method further includes:
when the load of the gas water heater is increased, the heating power of a burner in the gas water heater is increased, and when the burner is increased to the maximum heating power of the N-section heating mode, an electric heating module in the gas water heater is started to perform auxiliary heating.
Compared with the prior art, the invention has the advantages and positive effects that:
through with electric heating module built-in the shell, fan and electric heating module arrange side by side and electric heating module longitudinal arrangement, like this, alright make full use of the space that is located the combustor below of shell place electric heating module to make electric heating module can integrate inside the shell, make the inside part installation of shell compacter, in order to realize the design requirement of gas heater miniaturization compactness, reduced gas heater's whole volume.
Meanwhile, in the operation process of the gas water heater, when water is cut off and the water is started again, the water temperature in the heat exchanger is hot, so that the water can be heated by restarting the burner at the moment, and when water is cut off and restarted, the water can be heated by the electric heating module without starting the burner, so that the occurrence of the condition that the water temperature fluctuation is overlarge due to restarting is reduced, and the water temperature fluctuation is reduced to improve the user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a gas water heater according to an embodiment of the present invention;
FIG. 2 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention;
FIG. 3 is a flow chart of a second embodiment of a control method of the gas water heater of the present invention;
FIG. 4 is a flow chart of a third embodiment of a control method of the gas water heater of the present invention;
FIG. 5 is a schematic view of another embodiment of the gas water heater of the present invention;
FIG. 6 is an enlarged partial schematic view of area A of FIG. 5;
FIG. 7 is one of the schematic structural diagrams of the electric heating module in FIG. 5;
FIG. 8 is an exploded view of the electric heating module of FIG. 7;
FIG. 9 is a cross-sectional view of the electric heating module of FIG. 7;
FIG. 10 is a second schematic diagram of the electric heating module in FIG. 5;
fig. 11 is an exploded view of the electric heating module of fig. 10.
Reference numerals:
a housing 100;
a water inlet pipe 101, a water outlet pipe 102, a fan 103 and a water pump 104;
a bypass pipe 1000, a first connection pipe 1011, and a second connection pipe 1021;
a burner 200;
a heat exchanger 300;
an electric heating module 400;
heating the container 11;
a first water pipe 111, a second water pipe 112, a mounting port 113, a first water pipe 111, a second water pipe 115, a heating cylinder 113, and an end cover 114;
a second electric heating member 12;
a protective cover 13;
a temperature controller 14;
a first electric heating member 21;
an outer sleeve 22, a water inlet 221;
an inner cannula 23, a water outlet 231, an auxiliary inlet 232;
a water treatment member 24, a granular material 241 and a shielding net 242;
a spiral plate 25;
a thermal insulation shell 26;
a temperature detector 27;
a flange 28;
a control device 500;
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In a first embodiment, as shown in fig. 1, the present invention provides a gas water heater, which includes a housing 100, a burner 200, a burner 300, an electric heating module 400, a control device 500, a water inlet pipe 101, a water outlet pipe 102, a fan 103, a water pump 104, and the like. The control device 500 comprises a processor, a memory and a control program of the gas water heater which is stored on the memory and can be executed by the processor.
The burner 200 is capable of burning fuel gas to heat water flowing in the burner 300, and the water inlet pipe 101 and the water outlet pipe 102 are respectively connected with the heat exchanger 200 to form a heating water flow path, the electric heating module 400 is connected in series in the heating water flow path, and the electric heating module 400 performs auxiliary electric heating on the water flowing therethrough by using the principle of electric heating. The water inlet pipe 101 is connected to a water supply pipe in the user's home to introduce cold water, and the water outlet pipe 102 is connected to a water terminal (hot water tap) in the user's home to output hot water. The specific structural configuration of the gas water heater is not limited and described in detail herein.
Specifically, the gas water heater of the present embodiment is additionally provided with an electric heating module 400. Wherein the electric heating module 400 is disposed inside the housing 100 to form a unitary structure. In the case of a water heater using gas as an energy source, in addition to the burner 200 and the heat exchanger 300, a fan 103, a water pump 104, and the like are disposed in the housing 100, and the heat exchanger 300 is disposed above the burner 200, and the fan 103, the water pump 104, and the like are disposed below the burner 200 in a conventional layout.
While there is a certain space margin for the region where the blower 103 and the water pump 104 are disposed at the bottom of the housing 100, the electric heating module 400 is disposed at the bottom of the burner 200 and at one side of the blower 103. In this way, the electric heating module 400, the blower 103 and the water pump 104 are arranged side by side, the space at the bottom of the housing 100 is fully utilized to install the electric heating module 400, and the electric heating module 400 is arranged longitudinally to satisfy the requirement of being arranged side by side with the blower 103.
At the same time, the blower 103 is vertically arranged on the back plate of the housing, so that the electric heating module 400 is arranged in the thickness direction of the blower 103, and thus a sufficient space can be reserved at one side of the blower 103 to install the electric heating module 400.
In the second embodiment, the electric heating module 400 has various structural forms, and is illustrated in the following drawings.
In one embodiment, to fulfill the requirements of the electric heating module 400 for instant heating, as shown in fig. 5-9, the electric heating module 400 includes:
a first electric heating part 21, the first electric heating part 21 being for generating heat by energizing;
an outer sleeve 22, a water inlet 221 is arranged on the outer sleeve 22;
an inner cannula 23, wherein a water outlet 231 is arranged at one end part of the inner cannula 23, and an auxiliary inlet 232 is arranged at the other end part of the inner cannula;
a spiral plate 25, the spiral plate 25 being disposed around the inner cannula 23 and extending in a length direction of the inner cannula 23.
Wherein the inner cannula 23 is sealingly inserted into the outer cannula 22, the auxiliary inlet 32 is located inside the outer cannula 22, and the first electric heating element 21 is arranged on the outer cannula 22 and is used for heating water in the outer cannula 22.
Specifically, during actual use, the water inlet 221 is connected to the second connection pipe 1021, and the water outlet 231 is connected to the water outlet pipe. A spiral plate 25 is located in the outer sleeve 22 and distributed around the inner cannula 23, the spiral plate 25 being capable of guiding the water flow in the outer sleeve 22 such that the water flow spirals between the outer sleeve 22 and the inner cannula 23. Therefore, the flow path of the water flow can be effectively prolonged, so that the water flow can be uniformly heated, and the requirement of instant heating water is met.
Wherein a spiral plate 25 is arranged on the inner cannula 23. Specifically, the spiral plate 25 is integrally in a spiral structure and is sleeved on the outer portion of the inner cannula 23, so that the spiral plate 25 is installed and fixed. While the spiral plate 25 may be welded to the inner cannula 23 or the spiral plate 25 may be bonded to the inner cannula 23. The specific manner of fixedly connecting the spiral plate 25 to the inner tube 23 is not limited and will not be described in detail herein.
In addition, for ease of installation and positioning, the outer edge of the spiral plate 25 is affixed to the inner tube wall of the outer sleeve 22. Specifically, after the inner cannula 23 is inserted into the outer cannula 22, the edge of the spiral plate 25 is abutted against the inner wall of the outer cannula 22, so that the inner cannula 23 suspended in the outer cannula 22 can be better supported and positioned. Moreover, since the edge of the spiral plate 25 is abutted against the inner wall of the outer sleeve 22, the water flowing in from the water inlet 221 is guided and conveyed through the spiral plate 25, so that the heating uniformity of the water flow is ensured.
In some embodiments, the water inlet 221 and the water outlet 231 may be disposed at the same end of the outer sleeve 22 and the inner insert 23, so that the inflow water flows along the length direction of the outer sleeve 22 and then flows along the length direction of the inner insert 23 in the opposite direction. In this way, it is also more advantageous for the water to be heated uniformly so that the water outlet 231 outputs water at a uniform temperature.
Specifically, when the electric heating module 400 is turned on again, since a certain amount of hot water is stored in the outer sleeve 22 and the inner sleeve 23, after the cold water enters the outer sleeve 22 again, the water flowing out of the inner sleeve 23 can be subjected to heat absorption and temperature reduction, so that the temperature of the water outlet 231 is prevented or reduced from being too high due to the fact that the hot water stored in the outer sleeve 22 and the inner sleeve 23 is heated again, and the user experience is improved.
In another embodiment, the electric heating module 400 further comprises a water treatment member 24, the water treatment member 24 is used for performing bacteriostasis and scale inhibition treatment on water flowing through, and the water treatment member 24 is arranged between the inner cannula 23 and the outer cannula 22;
when a user opens the water terminal to use hot water, water in the water supply pipe enters the outer sleeve 22 through the water inlet 221, and the water entering the outer sleeve 22 is treated by the water treatment component 24 to perform bacteriostasis and scale inhibition treatment on the water, so that the effect of softening the water is achieved. The softened water continues to flow and is heated by the heat generated by the first electric heating member 21, and the heated water flows into the inner cannula 23 via the auxiliary inlet 32 and is output from the inner cannula 23.
On the one hand, an installation space is formed between the outer sleeve 22 and the inner insert 23 to place the water treatment component 24, so that water flow enters the outer sleeve 22 and then is treated by the water treatment component 24; on the other hand, a circuitous pipeline is formed between the outer sleeve 22 and the inner sleeve 23, so that water entering the outer sleeve 22 is prevented from flowing out quickly along with water flow, the water entering the outer sleeve 22 can be ensured to be fully contacted with the water treatment component 24, and the water treatment requirement is met.
In some embodiments, to ensure that the inflowing water can be treated by the water treatment member 24, the water treatment member 24 may be disposed at one side of the water inlet 221 and cover the water inlet 221. Thus, the water flowing in from the water inlet 221 flows into the inner cannula 23 from the auxiliary inlet 32 after being treated by the water treatment member 24 and is outputted from the water outlet 231, so that the inflow water is ensured to be treated by the water treatment member 24.
In one embodiment, for the water treatment component 24, its presentity takes on a variety of forms, such as: the conventional antibacterial scale inhibitor provided at the water inlet end preferably includes a plurality of granular materials 241 in the water treatment member 24, the granular materials 241 being located at one side of the end of the spiral plate 25.
Specifically, a granular material made of a material with antibacterial and scale inhibiting functions (such as silicon-phosphorus crystal) is filled between the outer sleeve 22 and the inner sleeve 23. After water flows in through the water inlet 221, the water can be fully contacted with the granular material 241, so that the contact area between the granular material 241 and water flow is increased, and better antibacterial and scale inhibiting treatment is achieved on the water flow.
Wherein, in order to avoid the granular material 241 from leaking out along with the flow of the water, the water treatment component 24 further comprises a shielding net 242, and the shielding net 242 is positioned between the spiral plate 25 and the granular material 241. Specifically, in use, after water enters the outer sleeve 22, it is treated by the particulate material 241 and flows through the shielding mesh 242 and then along the direction of the spiral plate 25. Under the effect of the shielding net 242, the granular material 241 is limited at one end of the outer sleeve 22, so as to avoid the granular material 241 from flowing along with water flow. The mesh size of the shielding net 242 should be smaller than the size of the granular material 241.
In other embodiments, there are various ways in which the first electrical heating element 21 may be embodied. For example: conventional electric heating methods are classified into electric heating pipes and thick film heating, and are exemplified below.
In one embodiment, the first electric heating element 21 is a thick film, the thick film is wrapped outside the outer sleeve 22, and the outer sleeve 22 is a heat conducting tube. Specifically, a thick film is used as the first electric heating element 21, which can be wrapped outside the outer sleeve 22, and the outer sleeve 22 is made of a material with excellent heat conduction performance (such as copper pipe and aluminum pipe). When the thick film is electrically heated, heat is transferred to the inside through the outer jacket tube 22 to heat water flowing between the outer jacket tube 22 and the inner jacket tube 23.
Preferably, for heat preservation, a heat preservation shell 26 can be arranged outside the first electric heating component 21, so that on one hand, the heat preservation shell 26 can preserve heat generated by thick films, and on the other hand, the heat preservation shell 26 can also protect the first electric heating component 21 from the outside, so that the use reliability and safety are improved.
In another embodiment, the first electric heating member 21 may be an electric heating tube between the outer sleeve 22 and the inner sleeve 23 to heat the water flowing therethrough directly inside. Alternatively, the electric heating tube is wound around the outside of the outer sleeve 22, and the electric heating tube heats and transfers heat through the outer sleeve 22.
In some embodiments, to facilitate temperature detection, a temperature detector 27 may be provided at the end of the outer sleeve 22 remote from the water inlet 221, the temperature detector 27 being located near the auxiliary inlet 32 of the inner cannula 23 to detect the temperature of the water flowing into the inner cannula 23 to control the heating power of the first electrical heating element 21. After the water flows into the inner cannula 23 in the opposite direction, the water flowing through the inner cannula 23 can still be regulated by the water temperature in the outer sleeve in the outflow process, so that the heating power of the first electric heating component 21 is further regulated according to the temperature of the water flowing into the inner cannula 23, and the water outlet temperature of the water outlet 231 is accurately controlled.
In other embodiments, to facilitate removal of the replacement water treatment member 24, a removable flange 28 is provided at one end of the outer sleeve 22. Specifically, during assembly, the flange 28 is mounted on a corresponding nozzle of the outer sleeve 22, and the inner sleeve 23 is sealed through the flange 28 and extends into the outer sleeve 22, thereby assembling the water treatment assembly 24 between the outer sleeve 22 and the inner sleeve 23. When the water treatment member 24 needs to be replaced, the flange 28 is simply removed from the outer sleeve 22, and the water treatment member 24 can be replaced with a new one. Preferably, for ease of assembly, flange 28 may be secured directly to inner cannula 23, for example: the flange 28 is sealed and welded to the inner cannula 23, and after the flange 28 is fixed to the outer cannula 22, the inner cannula 23 can be installed to simplify the assembly process.
As shown in fig. 5, there may be at least two ways to connect the water flow to the electric heating module 400.
In one mode, the electric heating module 400 is connected between the water inlet pipe and the heat exchanger 300; in a second mode, the electric heating module 400 is connected between the heat exchanger 300 and the water outlet pipe.
The present embodiment is described by taking an example that the electric heating module 400 is connected between the water outlet pipe and the heat exchanger 300.
Cold water supplied from a water supply pipe in the home of the user enters the water inlet pipe, enters the electric heating module 400 after passing through the heat exchanger 300, and finally water flowing out of the electric heating module 400 is output through the water outlet pipe 102.
In one embodiment, to facilitate the connection of the pipes, the water inlet pipe 101 is provided with a first connection pipe 1011, and the water inlet pipe 101 is connected to the heat exchanger 300 through the first connection pipe 1011; the water outlet pipe 102 is provided with a second connecting pipe 1021, and the water outlet pipe 102 is connected with the heat exchanger 300 through the second connecting pipe 1021; a bypass pipe 1000 is provided between the first connection pipe 1011 and the second connection pipe 1021.
Specifically, during actual use, water output from the heat exchanger 300 will flow into the electric heating module 400 via the second connection pipe 1021 and finally be output from the water outlet pipe. When the water is turned on and off for a short time, the temperature of the water outputted from the heat exchanger 300 is high, and a part of cold water is introduced into the second connection pipe 1021 from the bypass pipe 1000, so that the cold water and the hot water are mixed, and the occurrence of a situation that the water temperature reply rises greatly is reduced.
In order to avoid that the bypass pipe 1000 delivers excessive cold water to the second connection pipe 1021 during normal heating, the pipe diameter of the bypass pipe 1000 is smaller than the pipe diameters of the first connection pipe 1011 and the second connection pipe 1021.
Specifically, when the user turns off water for a short time and starts water consumption again, when the water flow flowing in from the water inlet pipe is conveyed to the heat exchanger 300 and the bypass pipe 1000 through the first connecting pipe 1011, the heat exchange pipeline in the heat exchanger 300 is in a coil shape, so that the water resistance in the initial stage of the water flow is large, and more cold water can enter the second connecting pipe 1021 through the bypass pipe 1000; and the secondarily heated water in the heat exchanger 300 is effectively cooled by the cold water after flowing into the second connection pipe 1021, so as to reduce the fluctuation of the water temperature.
In normal heating, most of the water conveyed by the first connecting pipe 1011 enters the heat exchanger 300 for heating due to the smaller pipe diameter of the bypass pipe 1000, so as to meet the requirement of normal heating.
In addition, as for the piping arrangement of the first connection pipe 1011, the second connection pipe 1021, and the bypass pipe 1000, the first connection pipe 1011 and the second connection pipe 1021 may be arranged on the same side of the heat exchanger 300, and the bypass pipe 1000 may be arranged on the side of the heat exchanger 300. Alternatively, the first connection pipe 1011 is disposed at one side of the heat exchanger 300, the second connection pipe 1021 is disposed at the other side of the heat exchanger 300, and the bypass pipe 1000 is located below the burner 200.
In order to reduce the design requirements, the control device 500 is also disposed inside the housing 100, and the control device 500 is disposed at the side of the burner 200. Specifically, the control device 500 is installed with a free space between the burner 200 and the sidewall of the housing 100. In order to avoid the influence of the heat generated by the combustion of the fuel gas by the burner 200 on the electrical components in the control device 500, a protection plate 501 is further provided between the control device 500 and the burner 200. The shielding plate 501 is shielded between the control device 500 and the burner 200, and can insulate the control device 500.
As shown in fig. 10-11, in another embodiment, an electrical heating module 400 includes: a heating vessel 11 and a second electrical heating member 12.
The side wall of the heating container 11 is provided with a first water pipe 111, and the bottom of the heating container 11 is provided with a second water pipe 112; a second electric heating member 12 is provided in the heating container 11 and is used for heating water in the heating container 11 by energizing.
Specifically, the water introduced into the gas water heater flows into the heating container 11 through the first water pipe 111, and the water introduced into the heating container 11 is heated by energizing the second electric heating member 12. For the second electric heating member 12, an electric heating tube built in the heating container 11 may be used, or a thick film wrapped outside the heating container 11 may be used.
In one embodiment, the heating vessel 11 includes a heating cartridge 116 and end caps 114 at both ends. The end cap 114 is hermetically connected to a corresponding port portion of the heating cylinder 113. In the assembly, an end cap 114 having the second electric heating member 12 mounted thereto is mounted on an end of the heating cylinder 113 to complete the assembly, and the other end cap 114 is mounted on the second water pipe 112, and the first water pipe 111 is provided on a side wall of the heating cylinder 113.
In some embodiments, in order to allow the water entering the heating container 11 to be sufficiently heated, heating efficiency is improved. The second electric heating member 12 is an electric heating tube, and a portion of the electric heating tube located in the heating container 11 forms a coil section.
Specifically, for the electric heating pipe, a spiral pipe section is formed at the inner part of the heating container 11, and the spiral pipe section can effectively prolong the length of the motor heat pipe in the heating container 11, so as to increase the contact area between the electric heating pipe and water in the heating container 11, and further meet the heating requirement of small volume and high function.
Meanwhile, the spiral pipe section formed by the electric heating pipe can also play a role in guiding water flow in the heating container 11, and the interval between the spiral pipe sections forms a guiding space for guiding the water flow to flow spirally, so that the flow path of the water flow in the heating container 11 is prolonged, and the heat exchange efficiency is improved more favorably.
Wherein the upper end of the second water pipe extends to the top of the heating container, and the spiral pipe section surrounds the periphery of the first water pipe. Specifically, the second water pipe is connected to the water outlet pipe 102 for outputting heated water, and in order to sufficiently heat the water entering the heating container 11, the top pipe orifice of the second water pipe 112 is disposed at the top position of the heating container 11, and correspondingly, the first water pipe 111 is disposed close to the lower end portion of the heating container 11. The water entering the heating container 11 through the first water pipe 111 will spiral up along the spiral pipe section formed by the electric heating pipe, and the water flow is sufficiently heated by the heating pipe during the flowing process of the heating container 11, and finally is output from the top pipe orifice of the first water pipe 111.
In another embodiment, for the second electric heating part 12 using an electric heating pipe, its connection terminal extends to the outside of the end cover 114, and at the same time, a temperature controller 14 may be further disposed on the end cover 114, and the temperature controller 14 is electrically connected to the connection terminal of the second electric heating part 12.
In particular, the end cap 114 can be used to mount the second electric heating element 12 on the one hand and the thermostat 14 on the other hand, so as to meet the requirement of compact design.
In order to improve the safety of use, the end of the heating container 11 is also provided with a protective cover 13, the protective cover 13 covering the connection terminals and the temperature controller 14. The connecting terminal outside the heating container 11 can be protected through the protective cover 13, so that potential safety hazards caused by water leakage in the shell 100 of the gas water heater can be avoided.
In the third embodiment, based on the first and second embodiments, when the user starts the water again when the water is turned off during the use of the hot water, the user is easily scalded due to the output of the hot water due to the limitation of the minimum heating power of the burner 200.
As shown in fig. 2, for this purpose, an electric heating module 400 may be provided between the water outlet pipe 102 and the burner 300, and when the gas water heater is turned on again after turning off water, the gas water heater performs the following steps:
s101, the electric heating module 400 is started first, and the water flowing through the electric heating module 400 is heated.
Specifically, since the water temperature of the stored water in the burner 300 is high when the water is restarted, and is limited by the minimum heating power of the burner 200, the temperature of the discharged water may be excessively high if the water in the burner 300 is directly heated. For this reason, when water is restarted, the water flowing out of the burner 300 is first heated by the electric heating module 400 to reduce the fluctuation of the outlet water temperature of the outlet pipe 102.
S102, after the hot water stored in the burner 300 flows out, the burner 200 is restarted and the electric heating module 400 is turned off
Specifically, after water is turned off, water is turned on again for a certain period of time, and hot water stored in the burner 300 is outputted, so that cold water is again flowed into the burner 300. At this time, the burner 200 may be started to heat the burner 300 for normal hot water supply. Correspondingly, the electric heating module 400 can be powered off to stop working.
In the process of closing and restarting water for the gas water heater, the water temperature fluctuation of the water outlet pipe 102 caused by the fact that the water is closed and restarted can be effectively reduced by executing the steps, and therefore the use experience of a user is improved.
As shown in fig. 3, since the burner 200 is formed by a plurality of fire bars to heat, the heat generated by the starting of the fire bars is different and the noise generated by the starting of the fire bars is also different, thus, the burner 200 has a multi-stage heating mode, and different fire bars are controlled to burn fuel gas in different levels of heating modes. In order to effectively reduce noise generated in the operation process of the gas water heater, the control method further comprises the following steps:
s201, after the gas water heater is started, judging whether the maximum heating power of the burner exceeds the maximum heating power of the burner in the N-section heating mode along with the increase of the load.
Specifically, the gas water heater mainly relies on the burner 100 to burn gas to heat water during normal operation, and the burner 100 generates certain noise during combustion, and the larger the heating power of the burner 100 increases, the larger the noise generated.
S202, if the burner does not reach the maximum heating power in the N-section heating mode, the heating power of the burner in the gas water heater is increased.
Specifically, in the N-segment heating mode, for the increase of the load, the heating amount requirement is satisfied by increasing the heating power of the burner in the N-segment heating mode.
S203, if in the N-section heating mode, when the burner is increased to the maximum heating power of the N-section heating mode, an electric heating module in the gas water heater is started to perform auxiliary heating.
Specifically, when the burner is in the maximum heating power of the N-stage heating mode, the heating amount of the burner in the N-stage heating mode alone cannot meet the requirement when the load continues to increase. If the N+1 section heating mode is executed, the operation noise is increased, and at the moment, the electric heating module in the gas water heater is started to perform auxiliary heating. The electric heating module can meet the heating requirement that the load is increased by a certain amount in the N-section heating mode, so that the gas water heater is in a noise reduction level.
In another embodiment of the present application, for a gas water heater in a running process, if a load continuously increases, the control method of the gas water heater of the present embodiment further includes:
s204, in the N-section heating mode, when the electric heating module is at the maximum heating power and the load of the gas water heater is continuously increased, the gas water heater executes the N+1-section heating mode.
Specifically, when the heating power of the burner and the heating power of the electric heating module cannot meet the load requirement in the N-section heating mode, the gas water heater executes the n+1-section heating mode. After the gas water heater is switched to the N+1 section heating mode, the heating power of the burner is gradually increased, and the heating power of the electric heating module is gradually reduced until the electric heating module is turned off. Wherein the maximum heating power of the burner in the N-section heating mode is not greater than the minimum heating power of the burner in the N+1-section heating mode.
In some embodiments of the present application, when the maximum heating power of the burner in the N-stage heating mode is equal to the minimum heating power of the burner in the n+1-stage heating mode, if the load of the gas water heater is reduced, the gas water heater executes the N-stage heating mode.
Specifically, when the heating power of the two continuous heating modes is continuously transited in the programming of the gas water heater, when the load is reduced and the heating mode is switched from the n+1 section heating mode to the N section heating mode, the electric heating module does not need to start operation.
In another embodiment, if the maximum heating power of the burner in the N-section heating mode is smaller than the minimum heating power of the burner in the n+1-section heating mode, then in the n+1-section heating mode, if the load of the gas water heater is reduced when the burner is in the minimum heating power, the gas water heater executes the N-section heating mode and simultaneously starts the electric heating module.
Specifically, when the heating power of the two continuous sections of heating modes is not continuously transited in the programming of the gas water heater, when the load is reduced and the heating mode is switched from the N+1 section of heating mode to the N section of heating mode, the burner is at the maximum heating power of the N section of heating mode, and the electric heating module is electrified and started to perform auxiliary heating.
Meanwhile, in an embodiment of the present application, the control method of the gas water heater further includes: in the N-section heating mode, when the load of the gas water heater is reduced, the heating power of the electric heating module is reduced, and after the electric heating module is closed, the heating power of the burner is reduced.
Specifically, in the N-segment heating mode, if the load is reduced, the heating power of the electric heating module is reduced first to meet the requirement of load reduction. And, after the electric heating module is turned off, the load continues to decrease, and the heating power of the burner is correspondingly reduced.
As shown in fig. 4, in order to effectively reduce noise generated in the operation process of the gas water heater, the control method of the gas water heater includes:
step S301, calculating the heat quantity Q required by the current heating of the inflow water flow t 。
Specifically, after the gas water heater is started, when water flows into the gas water heater and needs to be heated, the corresponding heating source is judged and selected by calculating the heat required by water flow heating.
Step S302, judge Q t Whether or not the heat quantity Q generated by the electric heating module in the gas water heater is larger than the heat quantity Q generated by the electric heating module in the gas water heater 0 。
And step S303, if yes, starting a burner in the gas water heater to heat the inflow water flow.
Specifically, when a larger amount of heat is required to heat the water to a set temperature, the burner 200 is started, and more heat is generated by the burner 200 to meet the heat requirement of the water flow.
And step S304, if not, starting the electric heating module to heat the inflow water flow.
Specifically, when less heat is required to heat the water flow to the set temperature, the electric heating module 400 is started, and the heat generated by the electric heating module 400 is used to meet the heat requirement of the water flow. In this case, the burner 200 and the blower in the gas water heater are turned off while the electric heating module 400 is started. At this time, the burner 200 and the fan do not need to be started, so that noise generated by the burner and the fan is reduced, and the purpose of noise reduction is achieved.
Wherein, for the calculation of the heat required by the inflow water flow, the formula is as follows: q (Q) t =cρV t ×(T 0 -T t ) Calculate Q t Wherein the inflow water flow is V t Temperature T of water inlet t And a set temperature T 0 。
Specifically, the water inlet pipe 101 is provided with a temperature sensor and a flow sensor as required, so that the water inlet flow can be detected as V t And the water inlet temperature T t . Setting the temperature T 0 Then the Q of the heat required by the water inflow can be calculated according to the formula which is preset by the user t 。
In one embodiment, in order to effectively reduce noise generated during the operation of the gas water heater, the gas water heater is further provided with a noise detector 600, and the noise detector 600 can send a signal for noise detection to the control device 400. When the gas water heater is in operation, the control device 400 controls according to the control program of the gas water heater stored in the memory and executable by the processor, and the specific control method further comprises:
acquiring noise generated in the operation process of the gas water heater, and judging whether the acquired noise value is in a set noise range; if the heating quantity of the burner and the electric heating module in the gas water heater is kept unchanged within the set noise range; and if the noise value exceeds the set noise range, adjusting the heating quantity of the burner and the electric heating module in the gas water heater until the acquired noise value is within the set noise range.
Specifically, after the gas water heater is powered on and started, noise generated during the operation of the gas water heater can be detected in real time by the noise detector 600, and the noise detector 600 transmits the detected noise value to the control device 400. After receiving the noise value signal sent by the noise detector 600, the control device 400 compares the noise value signal according to the noise range information stored in the memory to determine whether the operation noise of the gas water heater exceeds the stored noise range. When the processor in the control device 400 analyzes and judges that the operation noise of the gas water heater is in the stored noise range, the processor indicates that the operation parameter of the gas water heater is proper, and the operation of the operation parameter is kept. When the processor in the control device 400 analyzes and judges that the operation noise of the gas water heater is in the stored noise range, the operation parameters of the gas water heater are unsuitable, and the operation parameters are regulated by the processor to control the burner 100 and the electric heating module 300. And, in adjusting the operating parameters of the burner 100 and the electric heating module 300, the noise is monitored in real time in cooperation with the noise detector 600 until the obtained noise value is within the set noise range.
In other embodiments, the specific manner of adjusting the operating parameters of the burner 200 and the electric heating module 400 may be adjusted as follows based on the amount of noise value obtained.
If the acquired noise value is higher than the maximum value of the set noise range, the heating amount of the electric heating module is increased, and the heating amount of the burner is reduced.
Specifically, when the acquired noise value is higher than the maximum value of the set noise range, it is indicated that the operation noise of the gas water heater is large, and the noise reduction process is required. The noise reduction is performed by reducing the operating power of the noise generating component, and therefore, the heating amount of the burner 200 needs to be reduced; meanwhile, in order to meet the user's requirement of using hot water, the heating amount of the electric heating module 400 needs to be increased simultaneously.
At this time, since the power of the burner 200 is reduced, noise generated from the burner 200 is effectively reduced, and thus noise reduction processing is realized.
Wherein, as the power of the burner 200 decreases, the power of the fan used with the burner 200 may also decrease. Therefore, in the case that the acquired noise value is higher than the maximum value of the set noise range, the rotation speed of the fan in the gas water heater can be reduced at the same time. After the rotating speed of the fan is reduced, the wind noise generated by the fan can be further reduced, and the noise is reduced more favorably.
On the other hand, in the control process, if the acquired noise value is lower than the minimum value of the set noise range, the heating amount of the burner is increased, and the heating amount of the electric heating module is reduced.
Specifically, in the case where the obtained noise value is lower than the minimum value of the set noise range, it is indicated that the noise level of the gas water heater satisfies the design requirement, and at this time, it is necessary to improve the heating efficiency, and it is apparent that the heating efficiency of the burner 200 is higher than that of the electric heating module 400.
Therefore, the heating power of the burner 200 is gradually increased and the heating power of the electric heating module 400 is simultaneously reduced. With the increase of the heating power of the burner 200, the noise generated by the gas water heater is gradually increased, and the obtained noise value is located in the noise range in the process of increasing the heating power of the burner 200.
And the operation power consumption of the gas water heater can be more effectively reduced due to the increase of the heating power of the burner 200 and the reduction of the heating power of the electric heating module.
In addition, as the heating power of the burner 200 increases, the rotational speed of the fan in the gas water heater is correspondingly increased to ensure that the gas in the burner 200 can be sufficiently combusted.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. A gas water heater, comprising:
the shell is internally provided with an installation space, and the shell is also provided with a water inlet pipe and a water outlet pipe which extend to the outside;
a burner for combusting a combustible gas;
the fan is used for conveying air to the combustor
A heat exchanger for supplying water to flow and heating the water using heat generated from the burner;
the electric heating module is internally provided with an electric heating runner;
the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path, and the electric heating flow path is connected in series in the heating water flow path; the burner is positioned below the heat exchanger, the fan and the electric heating module are arranged below the burner side by side, and the electric heating module is longitudinally arranged;
in addition, after the gas water heater is configured to be turned off and restarted, the electric heating module is electrified to heat, and then the burner is restarted; and, after the burner is started, the electric heating module is turned off.
2. The gas water heater of claim 1, wherein the fan is disposed upright on a back plate of the housing.
3. The gas water heater of claim 1, wherein the electrical heating module comprises:
a first electric heating member for generating heat by energization;
the first pipe body is provided with a water inlet;
the water outlet is formed in one end part of the second pipe body, and the auxiliary inlet is formed in the other end part of the second pipe body; the second pipe body is inserted into the first pipe body in a sealing way, the auxiliary inlet is positioned in the first pipe body, and the first electric heating component is arranged on the first pipe body and used for heating water in the first pipe body;
the spiral plate is arranged around the second pipe body and extends along the length direction of the second pipe body.
4. The gas water heater of claim 1, wherein the electrical heating module comprises: a heating container and a second electric heating member provided in the heating container, the heating container being connected in series in the heating water flow path.
5. The gas water heater according to claim 4, wherein a first water pipe is provided on a side wall of the heating container, a second water pipe is provided at a lower end portion of the heating container, a connection terminal of the second electric heating part extends to an outside of an upper end portion of the heating container, a protection cover is further provided at the upper end portion of the heating container, and the protection cover covers the connection terminal.
6. The gas water heater as recited in claim 5, wherein the second electrical heating element is an electrical heating tube, and a portion of the electrical heating tube located within the heating vessel forms a coil section.
7. The gas water heater as recited in claim 6, wherein an upper end portion of the second water pipe extends to a top portion of the heating vessel, and the spiral pipe section surrounds a periphery of the first water pipe.
8. The gas water heater as recited in claim 1, wherein the control method of the gas water heater comprises:
calculating heat Qt required by current heating of the water inflow and judging whether Qt is larger than heat Q0 which can be generated by the electric heating module; if yes, starting a combustor to heat the inflow water flow; if not, the electric heating module is started to heat the inflow water flow.
9. The gas water heater as recited in claim 1, wherein the burner has a multi-stage heating mode, the control method of the gas water heater further comprising:
when the load of the gas water heater is increased, the heating power of a burner in the gas water heater is increased, and when the burner is increased to the maximum heating power of the N-section heating mode, an electric heating module in the gas water heater is started to perform auxiliary heating.
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| CN2020113807457 | 2020-12-01 | ||
| CN202011380745 | 2020-12-01 |
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| CN202110443063.4A Active CN113188256B (en) | 2020-12-01 | 2021-04-23 | Control method of gas water heater and gas water heater |
| CN202110443048.XA Active CN113154689B (en) | 2020-12-01 | 2021-04-23 | Control method of gas water heater and gas water heater |
| CN202110465624.0A Active CN113154691B (en) | 2020-12-01 | 2021-04-28 | Gas water heater and control method thereof |
| CN202110607479.5A Active CN113294917B (en) | 2020-12-01 | 2021-06-01 | gas water heater |
| CN202110728368.XA Active CN113465183B (en) | 2020-12-01 | 2021-06-29 | Gas water heater |
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| CN202110443048.XA Active CN113154689B (en) | 2020-12-01 | 2021-04-23 | Control method of gas water heater and gas water heater |
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| CN202110607479.5A Active CN113294917B (en) | 2020-12-01 | 2021-06-01 | gas water heater |
| CN202110728368.XA Active CN113465183B (en) | 2020-12-01 | 2021-06-29 | Gas water heater |
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| GB2609057B (en) * | 2021-10-27 | 2023-07-12 | Digital Heat Ltd | Burner vessel and fluid heater |
| CN115325707A (en) * | 2022-08-26 | 2022-11-11 | 广东万家乐燃气具有限公司 | Control method of dual-energy water heater and gas water heater |
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- 2021-04-23 CN CN202110443063.4A patent/CN113188256B/en active Active
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- 2021-04-28 CN CN202110465624.0A patent/CN113154691B/en active Active
- 2021-06-01 CN CN202110607479.5A patent/CN113294917B/en active Active
- 2021-06-29 CN CN202110728368.XA patent/CN113465183B/en active Active
Also Published As
| Publication number | Publication date |
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| CN113188256A (en) | 2021-07-30 |
| CN113294917A (en) | 2021-08-24 |
| CN113465183B (en) | 2023-10-27 |
| CN113154689B (en) | 2022-11-15 |
| CN113294917B (en) | 2023-10-27 |
| CN113154689A (en) | 2021-07-23 |
| CN113465183A (en) | 2021-10-01 |
| CN113188256B (en) | 2022-11-15 |
| CN113154691A (en) | 2021-07-23 |
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