CN117515921A - Control method of gas water heater and gas water heater - Google Patents

Control method of gas water heater and gas water heater Download PDF

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Publication number
CN117515921A
CN117515921A CN202210910964.4A CN202210910964A CN117515921A CN 117515921 A CN117515921 A CN 117515921A CN 202210910964 A CN202210910964 A CN 202210910964A CN 117515921 A CN117515921 A CN 117515921A
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CN
China
Prior art keywords
water
gas
heating device
water heater
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210910964.4A
Other languages
Chinese (zh)
Inventor
刘世贤
田建均
巴喜亮
梁国荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Original Assignee
Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd filed Critical Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority to CN202210910964.4A priority Critical patent/CN117515921A/en
Publication of CN117515921A publication Critical patent/CN117515921A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • F24H15/429—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting operation modes
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/136—Defrosting or de-icing; Preventing freezing
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/238—Flow rate
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/254—Room temperature
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335—Control of pumps, e.g. on-off control
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

The invention discloses a control method of a gas water heater and the gas water heater, wherein the gas water heater comprises a gas heating device, an electric auxiliary heating device and a circulating water pump, and at least comprises a preheating state, and the control method comprises the following steps: entering the preheating state; the circulating water pump operates; the electric auxiliary heating device operates; the electric auxiliary heating device is stopped, and the gas heating device operates; the gas heating device is stopped. The control method of the gas water heater provided by the embodiment of the invention has the advantages of low noise, stable water temperature and the like.

Description

Control method of gas water heater and gas water heater
Technical Field
The invention relates to the technical field of electric appliance manufacturing, in particular to a control method of a gas water heater and the gas water heater.
Background
The gas water heater in the related art has larger noise generated during preheating and is easy to influence the rest of users.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a control method of the gas water heater, which has the advantages of low noise, stable water temperature and the like.
The invention also proposes a computer readable storage medium.
The invention also provides a gas water heater.
To achieve the above object, an embodiment according to a first aspect of the present invention provides a control method of a gas water heater, the gas water heater including a gas heating device, an electric auxiliary heating device, and a circulating water pump, the gas water heater including at least a preheating state, the control method including the steps of: entering the preheating state; the circulating water pump operates; the electric auxiliary heating device operates; the electric auxiliary heating device is stopped, and the gas heating device operates; the gas heating device is stopped.
The control method of the gas water heater has the advantages of low noise, stable water temperature and the like.
In addition, the control method of the gas water heater according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the present invention, the gas water heater further includes a water temperature detection device, and the control method further includes: acquiring a target water temperature when entering the preheating state; after the electric auxiliary heating device is operated, stopping the electric auxiliary heating device and operating the gas heating device when the sum of the detection value of the water temperature detection device and the preset temperature rise is larger than the target water temperature.
According to one embodiment of the invention, the predetermined temperature rise is the temperature rise of the water flow after one full pipeline cycle is completed.
According to an embodiment of the invention, the control method further comprises: after the gas heating device is operated, stopping the gas heating device when the detection value of the water temperature detection device is larger than the sum of the preset return difference temperature and the target temperature.
According to one embodiment of the present invention, the gas water heater further includes an anti-freezing state, and the control method includes the steps of: entering the anti-freezing state; the circulating water pump operates; the electric auxiliary heating device operates.
According to an embodiment of the present invention, the gas water heater further includes an ambient temperature detection device, and the control method further includes: and when the detection value of the environment temperature detection device is smaller than the preset freezing temperature, controlling the gas water heater to enter the antifreezing state.
According to one embodiment of the present invention, the gas water heater further includes a water temperature detection device, and the control method further includes: and stopping the circulating water pump and the electric auxiliary heating device when the detection value of the water temperature detection device is larger than the preset defrosting temperature.
According to one embodiment of the present invention, the gas water heater further includes an ambient temperature detection device, the gas water heater further includes a water consumption state, and the control method further includes: entering the water use state; when the detection value of the environment temperature detection device is larger than the preset summer temperature, the electric auxiliary heating device operates, and the gas heating device stops; and when the detection value of the environment temperature detection device is smaller than the preset winter temperature, the electric auxiliary heating device and the gas heating device operate simultaneously.
According to one embodiment of the invention, the gas water heater further comprises a flow control device and a water flow sensor, the gas water heater further comprises a water use state, and the control method comprises the following steps of entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow.
According to an embodiment of the present invention, the control method includes: entering the water use state; when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow; and when the water flow sensor detects the water flow, the electric auxiliary heating device is operated.
According to an embodiment of the present invention, the control method includes: entering the water use state; when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow; when the water flow sensor detects the water flow, the electric auxiliary heating device is operated; the flow control means increases the flow rate of the water discharged after a predetermined time passes.
According to one embodiment of the invention, the circulating water pump is connected between the waterway inlet of the gas heating device and the electric auxiliary heating device.
An embodiment according to a second aspect of the present invention proposes a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements a control method of a gas water heater according to an embodiment of the first aspect of the present invention.
According to the computer readable storage medium of the embodiment of the invention, the control method of the gas water heater has the advantages of reducing noise of the gas water heater, improving water temperature stability and the like by utilizing the control method of the gas water heater.
An embodiment according to a third aspect of the present invention proposes a gas water heater applying the control method of a gas water heater according to an embodiment of the first aspect of the present invention.
According to the gas water heater provided by the embodiment of the invention, the control method of the gas water heater provided by the embodiment of the first aspect of the invention has the advantages of low noise, stable water temperature and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a gas water heater according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an electric auxiliary heating apparatus of a gas water heater according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of an electric auxiliary heating apparatus of a gas water heater according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of an insulating case of an electric auxiliary heating apparatus of a gas water heater according to an embodiment of the present invention.
Fig. 5 is a partial structural schematic view of a gas water heater according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a water inlet joint of a gas water heater according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a gas water heater according to an embodiment of the present invention.
Fig. 8 is a sectional view of a flow control device of a gas water heater according to an embodiment of the present invention.
Fig. 9 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Fig. 10 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Fig. 11 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Fig. 12 is a flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Reference numerals: the gas water heater 1, the electric auxiliary heating device 100, the shell 110, the water storage cavity 111, the water passing connector 112, the upper shell 114, the lower shell 115, the welding overlap joint edge 116, the heating element 120, the wiring terminal 130, the insulating shell 140, the clamping groove 141, the wire passing opening 142, the threaded hole 143, the temperature controller 150, the water inlet connector 200, the water passing flow passage 201, the ring groove 202, the flange 203, the threads 204, the lugs 205, the power control device 210, the heat exchanging surface 211, the cooling hole 212, the positioning groove 213, the mounting seat 214, the temperature detection device 220, the mounting hole 221, the pressing plate 230, the fixing hole 231, the flow control device 300, the on-off valve 310, the water flow sensor 320, the flow limiting ring 330, the pipe body 340, the water passing opening 341, the normally open flow passage A, the adjusting flow passage B, the circulating water pump 400, the gas heating device 500 and the shell 600.
Detailed Description
The present application is made based on the discovery and recognition by the inventors of the following facts and problems:
in the related art, the gas water heater only depends on the burner to heat water. In winter where the ambient temperature is low, it is difficult to ensure a sufficient water outlet temperature, and if the number of burner rows is increased, the volume will increase, and the required gas flow will increase. In summer with higher ambient temperature, the water outlet temperature is still hotter even if the burner is heated with minimum power.
Specifically, the load allowable range of the burner fire row has an upper limit and a lower limit, which limit the maximum heat load and the minimum heat load of the gas water heater.
If the upper limit of the heat load is increased by increasing the number of fire bars, not only the volume will be increased correspondingly, but also the gas flow rate needs to be increased, and the gas flow rate needs to be increased, so that the gas facilities, such as the gas meter, need to be replaced.
The minimum heat load of the gas water heater is 3-4 kilowatts, and when the water inlet temperature in summer is higher, the water outlet temperature is still higher even if the gas water heater is heated by the minimum load.
In the related art, a part of gas water heater is heated by additionally arranging an electric auxiliary heating device and a burner in a matched manner, and in summer with higher water inlet temperature, only electric auxiliary heating is adopted to make up for the heating condition smaller than the lower limit of the heat load of the burner; in winter with lower water inlet temperature, electric auxiliary heating and gas heating are performed simultaneously, so that the upper limit of the heat load of the whole gas water heater is increased, and the upper limit of the heat load can be increased and the lower limit of the heat load can be reduced.
Because of the special working environment inside the gas water heater, condensed water is easy to generate and is contacted with the electric auxiliary heating device, and in order to ensure the reliable operation of the electric auxiliary heating device, an insulating shell is required to be arranged on the electric auxiliary heating device.
The electric auxiliary heating device of the gas water heater in the related art is characterized in that the insulating protection sleeve is sleeved on the electric auxiliary heating device through friction force, the connection reliability is poor, and the insulating protection sleeve is easy to shift and even separate, so that the insulating protection is invalid.
The electric auxiliary heating device needs to be additionally provided with a power control device such as a silicon controlled rectifier and the like to adjust the operation power of the electric auxiliary heating device, and the power control device can generate a large amount of heat, so that the service life of the power control device can be reduced under the operation environment of the gas water heater with higher temperature.
For this reason, a part of the power control device is disposed on the water inlet pipe, the power control device is cooled by using cold water in the water inlet pipe, but an additional mount for mounting the power control device on the pipe is required, resulting in an increase in assembly process, an increase in the number of parts, and an influence on production efficiency, and the additional mounting of the power control device on the water inlet pipe increases the possibility of water leakage.
The gas water heater in the related art has larger noise generated during preheating and is easy to influence the rest of users.
Specifically, in order to realize the zero cold water function of water outlet instant heating, the gas water heater needs to circularly preheat water in a pipeline, but a burner of the gas water heater needs to be matched with a fan to operate when being heated, and larger noise can be generated when the gas water heater is in full-load operation, so that the rest of a user is influenced.
In winter with lower ambient temperature, in order to prevent the pipeline from freezing, the gas water heater needs to circularly heat water in the pipeline, but the burner of the gas water heater needs to be matched with a fan to operate when heating, and the gas water heater can generate larger noise when in full-load operation, and the low-temperature environment is usually late at night, so that the rest of a user is easily influenced by starting thawing.
The partial gas water heater in the related art is provided with an electric auxiliary heating device, the electric auxiliary heating device is used for heating when preheating is carried out, the burner does not operate, noise generated by the operation of the burner and a fan is avoided, however, the heating power of the electric auxiliary heating device is not adjustable, the temperature rise provided by each time the full pipeline circulation is completed is fixed, after a part of the pipeline reaches the target temperature, the heating is required to be stopped, at the moment, partial water flow still does not reach the set temperature, the water temperature fluctuation is large when the user uses water, and the bathing comfort is poor.
In the related art, when the gas water heater is used for boiling water after being turned off for a short time such as shower gel in the shower process of a user, a section of water with low temperature and not heated again is generated in a pipeline due to the fact that the gas heating device needs time due to self-checking, ignition and the like, so that the water temperature is fluctuated, and the use experience of the user is affected.
In the related art, when a user turns off water briefly and then boiled water, the gas water heater with the electric heating function utilizes the electric heating device to perform matched heating, so that the heating window period in the self-checking and ignition processes of the gas heating device is made up, and the water temperature fluctuation is reduced.
Therefore, a part of gas water heaters are provided with water flow regulating valves made of memory alloy, the deformation capacity of the memory alloy to the water temperature is utilized to increase the water flow when the water temperature is higher and reduce the water flow when the water temperature is lower, but the water flow regulating process of the memory alloy has certain hysteresis, and certain water temperature fluctuation still can be generated.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An electric auxiliary heating apparatus 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, the electric auxiliary heating apparatus 100 according to the embodiment of the present invention includes a housing 110, a heating member 120, a connection terminal 130, and an insulating case 140.
The shell 110 is internally provided with a water storage cavity 111, and the shell 110 is provided with two water passing connectors 112 communicated with the water storage cavity 111. The heating member 120 is provided in the housing 110. The connection terminal 130 is disposed outside the housing 110 and electrically connected to the heating member 120. The insulating case 140 is provided with a clamping groove 141, and the clamping groove 141 is clamped on at least one of the two water passing connectors 112 to connect the insulating case 140 and the housing 110, and the insulating case 140 at least covers the wiring terminal 130.
According to the electric auxiliary heating device 100 of the embodiment of the invention, by arranging the electric auxiliary heating device 100 and utilizing the electric auxiliary heating device 100 to perform auxiliary heating, the defect of a gas water heater which only adopts a gas heating device to perform heating in the related technology can be overcome. For example, in winter with lower ambient temperature, the gas heating device and the electric auxiliary heating device 100 are used for heating in a matching way, the upper limit of the heat load of the gas water heater is improved, the upper limit of the water outlet temperature is improved, in summer with higher ambient temperature, the electric auxiliary heating device 100 is used for heating alone, the heating condition when the temperature is smaller than the minimum load of the independent gas heating is compensated, the lower limit of the heat load of the gas water heater is reduced, and the lower limit of the water outlet temperature is reduced. Therefore, the water consumption requirements of users at different environmental temperatures can be met, and the comfort of the users in use is improved.
Further, by providing the insulating case 140 and covering the connection terminal 130 with the insulating case 140, the connection terminal 130 can be prevented from contacting water by the insulating case 140, and the reliability of the electric auxiliary heating apparatus 100 can be improved.
In addition, through setting up joint groove 141 on insulating shell 140, connect insulating shell 140 on casing 110 through joint groove 141 and the joint of water joint 112, only rely on the frictional force cover to establish the insulating protective sheath outside the casing in the correlation technique, can improve insulating shell 140's connection reliability, avoid insulating shell 140 to take place the aversion, avoid insulating shell 140 to break away from casing 110, improve the waterproof protection effect to binding post 130, further improve electric auxiliary heating device 100's reliability, only need with joint groove 141 and water joint 112 joint when the installation moreover, compare other connected modes, insulating shell 140 simple to operate, electric auxiliary heating device 100 assembly efficiency is high, thereby can improve electric auxiliary heating device 100's production efficiency.
Therefore, the electric auxiliary heating apparatus 100 according to the embodiment of the invention can increase the upper limit of the heat load and decrease the lower limit of the heat load, and has the advantage of strong reliability and the like.
An electric auxiliary heating apparatus 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 12, an electric auxiliary heating apparatus 100 according to an embodiment of the present invention includes a housing 110, a heating member 120, a connection terminal 130, and an insulation case 140.
Advantageously, as shown in fig. 2-4, the clamping groove 141 has an opening that is smaller in size than the diameter of the water connection 112 within the clamping groove 141. Thus, the water passing connector 112 is not easy to separate from the clamping groove 141, the insulating shell 140 is not easy to separate from the shell 110, and the installation reliability of the insulating shell 140 is improved.
Specifically, the diameters of the two water passing connectors 112 may be uniform. Thus, the two water passing connectors 112 can use the same part, which is convenient for part management, and is convenient for installation without distinguishing during installation.
Specifically, as shown in fig. 2 and 3, the connection terminal 130 is provided at the upper surface of the housing 110, one of the two water passing connectors 112 is provided at the lower surface of the housing 110 and the other is provided on the circumferential surface of the housing 110. In this way, the connection terminal 130 and the water passing connector 112 can be respectively arranged on different surfaces of the shell 110, so that the arrangement of the connection terminal 130 is facilitated, and the connection terminal 130 is further prevented from contacting water.
More specifically, as shown in fig. 2 to 4, the insulating case 140 is sleeved on the upper end of the housing 110, and the catching groove 141 is formed on the circumferential wall of the insulating case 140. This can further improve the waterproof protection effect of the insulating case 140 on the terminal 130 and the reliability of the electric auxiliary heating apparatus 100.
Alternatively, as shown in fig. 1 to 4, a water passing joint 112 is provided at the lower surface of the housing 110 for water inflow. That is, the water passing joint 112 at the circumferential wall of the housing 110 serves to pass water. This may facilitate the connection of the electric auxiliary heating apparatus 100 within the waterway of the gas water heater.
Fig. 2-4 illustrate an electrical auxiliary heating apparatus 100 according to some examples of the invention. As shown in fig. 2 to 4, the insulating case 140 is provided with a wire passing port 142. Thus, the connecting terminal 130 can be conveniently connected by the wires, and the connecting terminal 130 can be conveniently connected with a circuit in the gas water heater.
Advantageously, the edges of the wire openings 142 are rounded or covered with flexible protective rings. In this way, the lead is prevented from being worn by the edge of the wire passing opening 142, so that the electrical connection is disabled, the exposed lead is prevented from being contacted with water to affect the waterproof effect, and the reliability of the electrical connection of the electrical auxiliary heating device 100 is improved.
Specifically, as shown in fig. 4, the insulating case 140 and the housing 110 are further connected by a threaded fastener. Specifically, the insulating case 140 is provided with a screw hole 143, the case 110 is provided with a through hole, and the insulating case 140 and the case 110 are further connected by a screw fastener fitted into the screw hole 143 and the through hole. Thus, the mounting reliability of the insulating shell 140 can be further improved, the waterproof effect of the insulating shell 140 on the terminal 130 is improved, the insulating shell 140 can be positioned by matching the clamping groove 141 with the water passing connector 112, the insulating shell 140 and the shell 110 can be aligned conveniently, the installation of a threaded fastener is facilitated, and the production efficiency of the electric auxiliary heating device 100 is improved.
More specifically, as shown in fig. 2 and 3, the case 110 includes an upper case 114 and a lower case 115, and the upper case 114 and the lower case 115 are welded to each other. In this way, the upper case 114 and the lower case 115 can be conveniently connected, the water storage chamber 111 can be conveniently formed, the upper case 114 and the lower case 115 can be conveniently provided with the heating element 120 and other structures, and the tightness of the case 110 can be conveniently improved.
Specifically, as shown in fig. 2 and 3, one of the upper case 114 and the lower case 115 has a welding overlap edge 116 overlapping the other outer peripheral surface. This can facilitate welding of the upper case 114 and the lower case 115, and improve sealability of the upper case 114 and the lower case 115.
In other embodiments, the housing 110 may further include a main body tube and two end caps that respectively cover both ends of the main body tube. This also facilitates the formation of the water storage chamber 111 and the installation of the internal structures such as the heating member 120.
Further, the water passing joint 112 is welded to the housing 110. This may facilitate connection of the water passing joint 112 with the housing 110, and may improve sealability between the water passing joint 112 and the housing 110.
Specifically, the housing 110 has a through opening, and the edge of the through opening has a flange, and the flange is welded to the water passing connector 112. This may facilitate welding of the water passing joint 112, and may further improve sealability between the water passing joint 112 and the housing 110.
Alternatively, as shown in fig. 2, the heating element 120 is a spiral coil with a heating wire passing through the inside. This can increase the contact area between the heating member 120 and the water in the water storage chamber 111, and increase the heating efficiency of the heating member 120.
Fig. 2 illustrates an electrical auxiliary heating apparatus 100 according to some examples of the invention. As shown in fig. 2, the electric auxiliary heating apparatus 100 further includes a temperature controller 150, and the temperature controller 150 is disposed on the housing 110 and covered by the insulating case 140. Specifically, the thermostat 150 is provided at an upper end surface of the housing 110. Thus, the temperature controller 150 can be conveniently used for detecting and adjusting the heating temperature of the heating element 120, and the temperature controller 150 can be protected together by the insulating shell 140, so that the waterproof protection effect on the temperature controller 150 is improved, and the reliability of the electric auxiliary heating device 100 is improved.
Specifically, as shown in fig. 2, the connection terminal 130 includes a ground terminal and two electrode terminals. This may facilitate the connection of the electric auxiliary heating apparatus 100 to a power source and ground.
Advantageously, as shown in fig. 1, the electric auxiliary heating apparatus 100 is connected to the water inlet end of the gas water heater. Specifically, the water passing connector 112 for water inflow at the lower end of the electric auxiliary heating device 100 is directly connected to the water inlet connector 200 of the gas water heater 1, and the water inlet connector 200 is exposed to the casing 600 of the gas water heater 1 and is used for connecting an external water source pipeline. Compared with the technical scheme that the electric auxiliary heating device 100 is arranged at the water outlet end, water heated by the gas heating device cannot pass through the electric auxiliary heating device 100, so that the service life of the electric auxiliary heating device 100 can be prevented from being influenced by hot water, and the scale accumulation speed in the electric auxiliary heating device 100 can be slowed down.
The gas water heater 1 according to the embodiment of the present invention is described below. The gas water heater 1 according to the embodiment of the present invention includes the electric auxiliary heating apparatus 100 according to the above-described embodiment of the present invention.
The gas water heater 1 according to the embodiment of the present invention has the advantages of high upper limit and low lower limit of heat load, high reliability, etc. by using the electric auxiliary heating apparatus 100 according to the above embodiment of the present invention.
The gas water heater 1 according to the embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, the gas water heater 1 according to the embodiment of the present invention includes an electric auxiliary heating device 100, a gas heating device 500, a power control device 210, and a water inlet joint 200.
The power control device 210 is electrically connected to the electric auxiliary heating device 100. The water inlet joint 200 is suitable for being connected with a water source water inlet pipe, a water flow passage 201 is arranged in the water inlet joint 200, a heat exchange surface 211 is formed on the water inlet joint 200, and the power control device 210 is arranged on the heat exchange surface 211.
According to the gas water heater 1 of the embodiment of the invention, by arranging the electric auxiliary heating device 100 and utilizing the electric auxiliary heating device 100 to perform auxiliary heating, the defect of the gas water heater which only adopts the gas heating device to perform heating in the related technology can be overcome. For example, in winter with lower ambient temperature, the gas heating device 500 and the electric auxiliary heating device 100 are used for heating in a matching way, the upper limit of the heat load of the gas water heater is improved, the upper limit of the water outlet temperature is improved, in summer with higher ambient temperature, the electric auxiliary heating device 100 is used for heating alone, the heating condition when the temperature is smaller than the minimum load of the independent gas heating is compensated, the lower limit of the heat load of the gas water heater is reduced, and the lower limit of the water outlet temperature is reduced. Therefore, the water consumption requirements of users at different environmental temperatures can be met, and the comfort of the users in use is improved.
In addition, by setting the power control device 210, the heating power of the electric auxiliary heating device 100 can be controlled by using the power control device 210, so that the heating power of the electric auxiliary heating device 100 can be conveniently adjusted, the heating load of the gas water heater 1 is further refined, a more flexible heating effect is realized, and the comfort of a user in use is further improved.
In addition, by providing the heat exchange surface 211 on the water inlet joint 200, the power control device 210 is installed on the heat exchange surface 211, and heat exchange can be generated between the cold water flowing in the water inlet joint 200 and the power control device 210 through the heat exchange surface 211, and the cold water flowing in the water inlet joint 200 is utilized to cool the power control device 210 which heats during operation, so that the temperature of the power control device 210 is reduced, and the service life of the power control device 210 is prolonged.
Further, because the power control device 210 is disposed on the water inlet connector 200, compared with the technical scheme that the power control device is disposed on the pipeline in the related art, the structure for mounting the power control device 210 is not required to be separately disposed, so that the number of parts can be reduced, the cost of the parts can be reduced, the integration level of the gas water heater 1 can be improved, the structure in the gas water heater 1 can be more compact, the connection position in the gas water heater 1 can be reduced, the possibility of water leakage can be reduced, the sealing reliability of the gas water heater 1 can be improved, the power control device 210 can be firstly mounted on the water inlet connector 200 during mounting, and then the power control device 210 and the water inlet connector 200 are mounted in the gas water heater 1 together, so that the assembly process of the gas water heater 1 can be simplified, and the production efficiency of the gas water heater 1 can be improved.
Therefore, the gas water heater 1 according to the embodiment of the invention has the advantages of comfortable use, long service life, low cost, high production efficiency, strong reliability and the like.
The gas water heater 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 12, a gas water heater 1 according to an embodiment of the present invention includes an electric auxiliary heating device 100, a gas heating device 500, a power control device 210, and a water inlet joint 200.
Specifically, the power control device 210 is a thyristor. This may facilitate control of the power of the higher power electric auxiliary heating apparatus 100.
Advantageously, as shown in fig. 5 and 6, the heat exchanging surface 211 is formed with cooling holes 212, the cooling holes 212 are communicated with the water flow channel 201, and the power control device 210 covers the cooling holes 212. Specifically, the power control device 210 has a mount 214, and the mount 214 covers the cooling hole 212. In this way, the water flowing through the water inlet joint 200 can be used for contacting the power control device 210 and directly contacting the power control device 210 for cooling, so that the cooling effect on the power control device 210 is improved, and the service life of the power control device 210 is further prolonged.
More advantageously, a sealing ring is clamped between the power control means 210 and the heat exchanging surface, said sealing ring being arranged around the cooling hole 212. This can improve the sealing property at the cooling hole 212 and prevent water leakage at the cooling hole 212.
Further, as shown in fig. 6, the heat exchanging surface 211 is provided with a positioning groove 213 around the cooling hole 212, and the sealing ring is fitted in the positioning groove 213. Therefore, the positioning groove 213 can be used for positioning the sealing ring, so that the setting of the sealing ring is convenient, the stability of the sealing ring is improved, and the influence of the displacement of the sealing ring on the tightness is avoided.
More specifically, as shown in fig. 5 and 6, the power control device 210 and the heat exchanging surface 211 are connected by a threaded fastener. Specifically, screw holes are formed in the mounting seat 214 and the heat exchange surface 211, and the mounting seat 214 and the heat exchange surface 211 are connected through threaded fasteners matched in the screw holes. In this way, the connection reliability and stability of the power control device 210 and the heat exchange surface 211 can be improved, the sealing ring can be clamped between the power control device 210 and the heat exchange surface 211 conveniently, and the tightness between the power control device 210 and the heat exchange surface 211 is improved.
Fig. 5 and 6 show a gas water heater 1 according to some examples of the invention. As shown in fig. 5 and 6, the water inlet joint 200 is provided with a mounting hole 221, and a temperature detecting device 220 is fitted in the mounting hole 221. Specifically, the mounting hole 221 communicates with the water flow passage 201, and the temperature detecting device 220 protrudes into the water flow passage 201. Thus, the installation of the temperature detection device 220 can be facilitated, the detection of the water temperature by the temperature detection device 220 is facilitated, and the accuracy and reliability of water temperature detection are improved.
Specifically, as shown in fig. 5 and 6, the water inlet joint 200 is provided with a fixing hole 231, the temperature detecting device 220 is installed in the installation hole 221 through a pressing plate 230, and the pressing plate 230 is installed on the water inlet joint 200 through a screw fastener fitted in the fixing hole 231. This can facilitate the pressing of the temperature detecting device 220 into the mounting hole 221, improve the stability and reliability of the mounting of the temperature detecting device 220, and can facilitate the improvement of the sealability between the temperature detecting device 220 and the mounting hole 221.
Fig. 1-3, 5 and 6 illustrate a gas water heater 1 according to some examples of the invention. As shown in fig. 1, the electric auxiliary heating apparatus 100 is connected between a waterway inlet of the gas heating apparatus 500 and the water inlet joint 200. Compared with the technical scheme that the electric auxiliary heating device 100 is arranged at the waterway outlet of the gas heating device 500, water heated by the gas heating device cannot pass through the electric auxiliary heating device 100, so that the service life of the electric auxiliary heating device 100 can be prevented from being influenced by hot water, and the scale accumulation speed in the electric auxiliary heating device 100 can be slowed down.
Specifically, as shown in fig. 1 to 3, the lower surface of the electric auxiliary heating apparatus 100 is provided with a water passing joint 112, and the upper end of the water inlet joint 200 is fitted in the water passing joint 112. This facilitates the waterway connection of the electric auxiliary heating apparatus 100 with the water inlet joint 200.
Advantageously, a sealing ring is fitted between the outer circumferential surface of the water passing joint 112 and the inner circumferential surface of the water passing joint 112. This can improve the sealability between the electric auxiliary heating apparatus 100 and the water inlet joint 200.
More specifically, as shown in fig. 5 and 6, the outer circumferential surface of the water inlet joint 200 is provided with a ring groove 202, and the seal ring is fitted in the ring groove 202. Therefore, the ring groove 202 can be utilized to position the sealing ring, so that the installation of the sealing ring is facilitated, the stability of the sealing ring can be improved, and the sealing effect is prevented from being influenced by the displacement of the sealing ring.
Further, as shown in fig. 5 and 6, the outer circumferential surface of the water inlet joint 200 and the outer circumferential surface of the water passing joint 112 are provided with flanges 203, and the two flanges 203 are attached to each other. Specifically, the two flanges 203 may be connected by a snap spring and/or a latch. This may facilitate connection of the water inlet connector 200 to the electric auxiliary heating apparatus 100.
More specifically, as shown in fig. 5 and 6, the outer circumferential surface of the water inlet joint 200 is provided with threads 204, and the water inlet joint 200 is connected to the water inlet pipe of the water source through the threads 204. This may facilitate connection of the water inlet connector 200 to a water source inlet pipe.
Further, as shown in fig. 1, 5 and 6, the gas water heater 1 further includes a housing 600, and the water inlet connector 200 is provided with a lug 205, and the lug 205 is connected to the housing 600 by a threaded fastener. This may facilitate the installation of the water inlet connector 200 on the housing 600.
A control method of a gas water heater according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, the gas water heater 1 includes a gas heating device 500, an electric auxiliary heating device 100, and a circulating water pump 400, and the gas water heater 1 includes at least a preheating state.
As shown in fig. 9, the control method includes the steps of:
entering the preheating state;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates;
the electric auxiliary heating apparatus 100 is stopped and the gas heating apparatus 500 is operated;
the gas heating device 500 is stopped.
According to the control method of the gas water heater, the electric auxiliary heating device 100 is arranged, the electric auxiliary heating device 100 is firstly used for heating in a preheating state, and then the heating is changed into the heating of the gas heating device 500, so that compared with the technical scheme of completely preheating in a gas heating mode, the electric auxiliary heating device 100 has lower noise when in operation, the electric auxiliary heating device 100 is firstly used for heating water to a certain temperature, then the gas heating device 500 is used for heating to a target temperature in a low power mode, the full-load heating of the gas heating device is avoided, the noise generated by the gas water heater 1 in the whole preheating state can be reduced, and the noise generated in the preheating stage is prevented from affecting the rest of a user.
And, through heating to certain temperature with the electricity assistance heating device 100 earlier, then utilize gas heating device 500 to heat to target temperature, compare the mode that utilizes electricity assistance heating to target temperature entirely, can avoid because the temperature rise of once accomplishing full pipeline circulation of single electricity assistance heating is fixed, in order to prevent that the overtemperature from leading to in the pipeline temperature to reach target temperature and the problem that another part temperature did not reach target temperature, avoid the inhomogeneous problem of temperature in the pipeline, make the play water temperature of gas heater 1 more even stable, improve the travelling comfort when user uses.
Therefore, the control method of the gas water heater has the advantages of low noise, stable water temperature and the like.
A control method of a gas water heater according to an embodiment of the present invention will be described with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 12, the gas water heater 1 includes a gas heating device 500, an electric auxiliary heating device 100, and a circulating water pump 400.
Specifically, as shown in fig. 9, the gas water heater 1 further includes a water temperature detection device, and the control method further includes:
acquiring a target water temperature when entering the preheating state;
After the electric auxiliary heating apparatus 100 is operated, the electric auxiliary heating apparatus 100 is stopped and the gas heating apparatus 500 is operated when the sum of the detected value of the water temperature detecting apparatus and the predetermined temperature rise is greater than the target water temperature.
In other words, the control method at this time includes the steps of:
entering the preheating state to obtain a target water temperature;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates;
when the sum of the detected value of the water temperature detection device and the preset temperature rise is greater than the target water temperature, the electric auxiliary heating device 100 stops, and the gas heating device 500 operates;
the gas heating device 500 is stopped.
Therefore, when the actual water temperature is heated to be different from the target water temperature by less than the preset temperature rise, the electric auxiliary heating can be changed into gas heating in time. Therefore, the problem that the water temperature in the pipeline is uneven due to the fact that the water in the pipeline is locally heated to the target temperature by electric auxiliary heating can be effectively avoided.
Specifically, the preset temperature rise is the temperature rise of the water flow after one full pipeline circulation is completed. In other words, the predetermined temperature rise is the temperature rise after one week of water circulation. Thus, the electric auxiliary heating device 100 can be further prevented from heating the part in the pipeline to the target temperature, the temperature rise required to be heated in the gas heating stage can be reduced, the gas heating time is shortened, and the noise generated by the gas water heater 1 in the preheating stage is reduced.
It will be appreciated by those skilled in the art that the predetermined temperature rise may be other temperatures that can avoid the electric auxiliary heating to locally heat the water in the pipeline to the target temperature according to actual needs.
More specifically, as shown in fig. 9, the control method further includes:
after the gas heating device 500 is operated, the gas heating device 500 is stopped when the detected value of the water temperature detecting device is greater than the sum of the predetermined return difference temperature and the target temperature.
In other words, the control method at this time includes the steps of:
entering the preheating state to obtain a target water temperature;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates;
when the sum of the detected value of the water temperature detection device and the preset temperature rise is greater than the target water temperature, the electric auxiliary heating device 100 stops, and the gas heating device 500 operates;
when the detected value of the water temperature detecting means is greater than the sum of the predetermined return difference temperature and the target temperature, the gas heating means 500 is stopped.
Therefore, the actual water temperature after heating is stopped is slightly higher than the target water temperature, and the water temperature can be still higher than or equal to the target temperature when the user uses water after the water is cooled in the time between the heating stopping and the water consumption of the user, so that the influence on the use of the user is avoided.
It will be appreciated by those skilled in the art that the predetermined return difference temperature may be obtained by means of experimentation, big data, actual need, etc.
Fig. 10 illustrates a control method of a gas water heater according to some examples of the invention. As shown in fig. 10, the gas water heater 1 further includes an anti-freezing state, and the control method includes the steps of:
entering the anti-freezing state;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates.
Therefore, the electric auxiliary heating device 100 can be used for heating and freezing prevention, the gas heating device 500 is prevented from running in the freezing prevention stage, noise generated when the gas heating device 500 runs is avoided, the rest of a user is prevented from being influenced, and the electric auxiliary heating device 100 can be used for heating only because the electric auxiliary heating device 100 only needs to be heated to the freezing prevention temperature in the freezing prevention stage and the problem of overheat and heating uniformity is not needed to be considered.
Specifically, as shown in fig. 10, the gas water heater 1 further includes an ambient temperature detection device, and the control method further includes:
and when the detection value of the environment temperature detection device is smaller than the preset freezing temperature, controlling the gas water heater 1 to enter the antifreezing state.
In other words, the control method at this time includes the steps of:
When the detection value of the environment temperature detection device is smaller than the preset freezing temperature, the environment temperature detection device enters the anti-freezing state;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates.
Therefore, the water in the pipeline can be prevented from freezing by automatically entering an antifreezing state through the detection of the ambient temperature.
More specifically, as shown in fig. 10, the gas water heater 1 further includes a water temperature detection device, and the control method further includes:
when the detected value of the water temperature detecting means is greater than the predetermined defrosting temperature, the circulating water pump 400 and the electric auxiliary heating means 100 are stopped.
In other words, the control method at this time includes the steps of:
when the detection value of the environment temperature detection device is smaller than the preset freezing temperature, the environment temperature detection device enters the anti-freezing state;
the circulating water pump 400 operates;
the electric auxiliary heating apparatus 100 operates;
and stopping the circulating water pump and the electric auxiliary heating device when the detection value of the water temperature detection device is larger than the preset defrosting temperature.
Thus, the operation of the electric auxiliary heating device 100 and the circulating water pump 400 can be stopped in time after the preset defrosting temperature is reached, and the waste of energy sources is avoided.
Fig. 11 shows a gas water heater 1 according to some examples of the invention. As shown in fig. 11, the gas water heater 1 further includes an ambient temperature detection device, the gas water heater 1 further includes a water consumption state, and the control method further includes:
Entering the water use state;
when the detected value of the environmental temperature detection device is greater than the preset summer temperature, the electric auxiliary heating device 100 operates, and the gas heating device 500 stops;
when the detected value of the ambient temperature detecting means is less than the predetermined winter temperature, the electric auxiliary heating means 100 and the gas heating means 500 are operated simultaneously.
In winter with lower ambient temperature, the gas heating device 500 and the electric auxiliary heating device 100 are used for heating in a matching way, the upper limit of the heat load of the gas water heater is improved, the upper limit of the water outlet temperature is improved, in summer with higher ambient temperature, the electric auxiliary heating device 100 is used for heating alone, the heating condition when the temperature is smaller than the minimum load of heating alone gas is compensated, the lower limit of the heat load of the gas water heater is reduced, and the lower limit of the water outlet temperature is reduced. Therefore, the water consumption requirements of users at different environmental temperatures can be met, the comfort of the users in use is improved, the auxiliary heating is performed by using the electric auxiliary heating device 100, and the defect of a gas water heater which only adopts a gas heating device for heating in the related art can be overcome.
Fig. 12 shows a gas water heater 1 according to some examples of the invention. As shown in fig. 12, the gas water heater 1 further includes a flow control device 300 and a water flow sensor 320, the gas water heater 1 further includes a water consumption state, and the control method includes the steps of:
Entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device 300 reduces the water outlet flow.
The flow control device 300 is utilized to reduce the flow rate of water after the user turns off water temporarily, when the user turns on water again, the water flows out at the flow rate after flow limiting, the flow rate of the water in the gas water heater 1 is reduced, the water is conveniently heated to the target temperature, the problem that the water temperature is difficult to heat to the target temperature due to the large water flow is avoided, and therefore the fluctuation of the water temperature is reduced, and the comfort of the user during use is improved.
Further, since the flow control device 300 actively reduces the water flow when the water flow is detected to stop, compared with the flow limiting technical scheme of adopting the memory alloy for sensing the temperature to adjust the opening of the pipeline in the related art, the flow control device 300 can be switched to the flow limiting state immediately after the user turns off water temporarily, so that the water flow is ensured to be limited in time, the hysteresis caused by the fact that the memory alloy is required to wait for being contacted with the water flow with lower temperature to deform and limit the water flow is avoided, the water temperature fluctuation is further reduced, and the comfort of the user in use is improved.
Specifically, as shown in fig. 12, the control method includes:
Entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device 300 reduces the water outlet flow;
the electric auxiliary heating apparatus 100 is operated when the water flow sensor detects the flow of water.
It will be appreciated by those skilled in the art that while the electric auxiliary heating apparatus 100 is operated, the gas heating apparatus 500 is operated synchronously, but the gas heating apparatus 500 actually generates heating action later than the electric auxiliary heating apparatus 100 due to the self-checking and ignition processes.
Through the electric auxiliary heating device 100, when the user such as shower gel is made and boiled water is temporarily turned off, before the gas heating device 500 completes self-checking and ignition and can actually heat, the electric auxiliary heating device 100 can be utilized to heat, compared with a gas water heater which only relies on a gas heating mode in the related art, the electric auxiliary heating device 100 can be utilized to compensate a heating blank period caused by the self-checking and ignition of the gas heating device 500, water outlet is prevented from being heated, fluctuation of water temperature of the water outlet is reduced, and comfort of the user in use is improved.
In addition, through setting up flow control device 300, utilize flow control device 300 to reduce the rivers flow after the user temporarily closes water, like this when the user boiled water once more, the rivers flow after the flow restriction goes out the water, reduce the rivers flow in the gas heater 1, the electric auxiliary heating device 100 of being convenient for heats water, the electric auxiliary heating device 100 of being convenient for heats rivers to target temperature, avoid great rivers to lead to electric auxiliary heating device 100 to be difficult to with temperature heating to target temperature, thereby further reduce the temperature fluctuation, the travelling comfort when improving the user and using.
More specifically, as shown in fig. 12, the control method includes:
entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow;
when the water flow sensor detects the water flow, the electric auxiliary heating device is operated;
the flow control means increases the flow rate of the water discharged after a predetermined time passes.
In this way, after the gas heating device 500 can perform normal heating, the flow control device 300 can resume normal water flow, so that smooth use of the user is ensured.
Specifically, as shown in fig. 7, the circulating water pump 400 is connected between the waterway inlet of the gas heating device 500 and the electric auxiliary heating device 100. The water heated by the gas heating device can not pass through the electric auxiliary heating device 100 and the circulating water pump 400, so that the service life of the electric auxiliary heating device 100 and the circulating water pump 400 can be prevented from being influenced by hot water, and the scale accumulation speed in the electric auxiliary heating device 100 and the circulating water pump 400 can be slowed down.
A computer-readable storage medium according to an embodiment of the present invention is described below. A computer-readable storage medium according to an embodiment of the present invention has stored thereon a computer program which, when executed by a processor, implements a control method of a gas water heater according to the above-described embodiment of the present invention.
According to the computer readable storage medium, the control method of the gas water heater has the advantages of reducing noise of the gas water heater, improving water temperature stability and the like.
The gas water heater 1 according to the embodiment of the present invention is described below. The gas water heater 1 according to the embodiment of the present invention applies the control method of the gas water heater according to the above-described embodiment of the present invention.
According to the gas water heater 1 of the embodiment of the invention, the control method of the gas water heater has the advantages of low noise, stable water temperature and the like.
The gas water heater 1 according to the embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 12, the gas water heater 1 according to the embodiment of the present invention includes a gas heating device 500, an electric auxiliary heating device 100, and a flow control device 300.
The flow control device 300 is internally provided with a normally open flow passage A and a regulating flow passage B, the flow control device 300 is switchable between a current limiting state and a free flow state, the flow control device is in the current limiting state to close the regulating flow passage and in the free flow state to open the regulating flow passage, and the flow control device is communicated with the electric auxiliary heating device and the gas heating device.
Specifically, in the water using process, after the user turns off water briefly, the flow control device 300 switches to the flow-limiting state, so that the regulating flow passage is closed. After the user boiled water again, the electric auxiliary heating apparatus 100 is operated and the gas heating apparatus 500 is operated. After a period of time, the flow control device 300 switches to the free flow state, leaving the regulating flow passage open.
According to the gas water heater 1 of the embodiment of the invention, by arranging the electric auxiliary heating device 100 and utilizing the electric auxiliary heating device 100 to perform auxiliary heating, the defect of the gas water heater which only adopts the gas heating device to perform heating in the related technology can be overcome. For example, in winter with lower ambient temperature, the gas heating device 500 and the electric auxiliary heating device 100 are used for heating in a matching way, the upper limit of the heat load of the gas water heater is improved, the upper limit of the water outlet temperature is improved, in summer with higher ambient temperature, the electric auxiliary heating device 100 is used for heating alone, the heating condition when the temperature is smaller than the minimum load of the independent gas heating is compensated, the lower limit of the heat load of the gas water heater is reduced, and the lower limit of the water outlet temperature is reduced. Therefore, the water consumption requirements of users at different environmental temperatures can be met, and the comfort of the users in use is improved.
Moreover, by arranging the electric auxiliary heating device 100, when a user such as shower gel is boiled after turning off water temporarily, the electric auxiliary heating device 100 can be utilized to heat before the gas heating device 500 completes self-checking and ignition and can actually heat, compared with a gas water heater which only relies on a gas heating mode in the related art, the electric auxiliary heating device 100 can be utilized to compensate a heating blank period caused by the self-checking and ignition of the gas heating device 500, the phenomenon that water is not heated is avoided, fluctuation of water temperature of the water is reduced, and comfort of the user in use is improved.
In addition, through setting up flow control device 300, utilize flow control device 300 to reduce the rivers flow after the user temporarily closes water, like this when the user boiled water once more, the rivers flow after the flow restriction goes out the water, reduce the rivers flow in the gas heater 1, the electric auxiliary heating device 100 of being convenient for heats water, the electric auxiliary heating device 100 of being convenient for heats rivers to target temperature, avoid great rivers to lead to electric auxiliary heating device 100 to be difficult to with temperature heating to target temperature, thereby further reduce the temperature fluctuation, the travelling comfort when improving the user and using.
Further, since the flow control device 300 adjusts the water flow by adjusting the opening and closing of the flow channel B, compared with the technical scheme that the opening of the pipeline is adjusted by adopting the memory alloy with the sensing temperature in the related art, the flow control device 300 can be switched to the flow limiting state immediately after the user turns off the water temporarily, so that the water flow is ensured to be limited in time, the hysteresis caused by the fact that the memory alloy is deformed to limit the water flow after being contacted with the water flow with lower temperature is avoided, the water temperature fluctuation is further reduced, and the comfort of the user in use is improved.
Therefore, the gas water heater 1 according to the embodiment of the invention has the advantages of small water temperature fluctuation, comfortable use and the like.
The gas water heater 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
In some embodiments of the present invention, as shown in fig. 1 to 12, a gas water heater 1 according to an embodiment of the present invention includes a gas heating device 500, an electric auxiliary heating device 100, and a flow control device 300.
Specifically, as shown in fig. 8, the flow control device 300 includes an on-off valve 310, the flow control device 300 closes the regulating flow passage B in the flow restricting state on-off valve 310, and the flow control device 300 opens the regulating flow passage B in the flow releasing state on-off valve 310. The on-off valve 310 can be used to control the on-off of the flow channel B, thereby facilitating the switching of the state of the flow control device 300.
More specifically, as shown in fig. 8, a water flow sensor 320 is provided in the flow control device 300, and the on-off valve 310 is electrically connected to the water flow sensor 320. In this way, the water flow sensor 320 can detect the water flow, so that the on-off valve 310 can be controlled according to the water flow condition, and the control of the opening and closing of the regulating flow channel B can be facilitated.
Further, as shown in fig. 8, the water flow sensor 320 is configured to control the on-off valve 310 to close the adjustment flow passage B when the water flow stop is detected. In this way, after the water flow sensor 320 detects that the user turns off water temporarily, the on-off valve 310 is controlled to close the adjusting flow passage B, so that the flow control device 300 is switched to the flow limiting state, thereby reducing the water flow, and facilitating the electric auxiliary heating device 100 to heat the water flow to the target temperature.
Advantageously, the electric auxiliary heating apparatus 100 is electrically connected to the water flow sensor 320. This may facilitate control of the operation of the electric auxiliary heating apparatus 100 by the water flow conditions.
More advantageously, the water flow sensor 320 is configured to control the operation of the electric auxiliary heating apparatus 100 when a water flow is detected. Therefore, the electric auxiliary heating device 100 can be utilized to heat when the user boiled water, so that the waiting time caused by self-checking and ignition of the gas heating device 500 is compensated, and the water temperature fluctuation is reduced.
Specifically, the water flow sensor 320 is configured to control the gas heating device 500 and the electric auxiliary heating device 100 to operate simultaneously when the flow of water flow is detected. It will be appreciated by those skilled in the art that after the gas heating device 500 and the electric auxiliary heating device 100 are operated simultaneously, the gas heating device 500 actually generates heating action later than the electric auxiliary heating device 100 due to the processes of self-checking and ignition.
Further, the gas water heater 1 further comprises a timing device, and the timing device is electrically connected with the on-off valve 310. This allows the timing device to control the timing at which the on-off valve 310 opens the regulating flow passage B again.
Still further, the timing device is configured to control the on-off valve 310 to open the regulating flow passage B after the electric auxiliary heating apparatus 100 is operated for a predetermined time. It will be appreciated by those skilled in the art that the predetermined time may be obtained through experimentation, big data, actual needs. In this way, after the predetermined time elapses, the gas heating device 500 can perform normal heating, and then control the on-off valve 310 to open the adjusting flow passage B, so that the flow control device 300 is restored to the smooth flow state, thereby ensuring the water outlet flow of the gas water heater 1.
Fig. 8 shows a gas water heater 1 according to some examples of the invention. As shown in fig. 8, the normally open flow passage a is fitted with a flow restriction ring 330. This allows the normally open flow path a to be restricted by the restrictor ring 330, thereby enhancing the restriction of the flow of water by the flow control device 300 in the restricted state.
Specifically, as shown in fig. 8, the flow control device 300 further includes a pipe body 340, the water flow sensor 320 is provided in the pipe body 340, and the on-off valve 310 is mounted on a peripheral wall of the pipe body 340 with an axial direction perpendicular to an axial direction of the pipe body 340. Thus, the on-off valve 310 can be conveniently arranged, and the on-off valve 310 can conveniently control the opening and closing of the regulating flow passage B.
Advantageously, as shown in fig. 8, the central axis of the normally open flow passage a coincides with the central axis of the tube 340. This facilitates the installation of the normally open flow passage a.
More specifically, as shown in fig. 8, a water passing port 341 communicating with the inside of the pipe body 340 and regulating flow passage B is provided on the peripheral wall of the pipe body 340, and the on-off valve 310 controls the opening or closing of the regulating flow passage B by opening and closing the water passing port 341. This facilitates the control of the opening and closing of the adjustment flow passage B by the on-off valve 310.
More advantageously, as shown in fig. 7, the flow control device 300 is connected between the waterway inlet of the gas heating device 500 and the electric auxiliary heating device 100. In this way, hot water heated by the gas heating device 500 can be prevented from flowing through the flow control device 300 and the electric auxiliary heating device 100, the hot water can be prevented from affecting the service lives of the electric auxiliary heating device 100 and the flow control device 300, and the scale accumulation speed in the electric auxiliary heating device 100 and the flow control device 300 can be slowed down.
Alternatively, the power rating of the electric auxiliary heating apparatus 100 is 1-8 kilowatts. This can facilitate the heating of the electric auxiliary heating apparatus 100 in cooperation with the gas heating apparatus 500.
Specifically, the gas heating device 500 includes a water tank and a burner.
Other constructions and operations of the gas water heater 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. The control method of the gas water heater is characterized in that the gas water heater comprises a gas heating device, an electric auxiliary heating device and a circulating water pump, and at least comprises a preheating state, and comprises the following steps:
entering the preheating state;
the circulating water pump operates;
the electric auxiliary heating device operates;
the electric auxiliary heating device is stopped, and the gas heating device operates;
the gas heating device is stopped.
2. The control method of a gas water heater according to claim 1, wherein the gas water heater further comprises a water temperature detection device, the control method further comprising:
acquiring a target water temperature when entering the preheating state;
after the electric auxiliary heating device is operated, stopping the electric auxiliary heating device and operating the gas heating device when the sum of the detection value of the water temperature detection device and the preset temperature rise is larger than the target water temperature.
3. The control method of a gas water heater according to claim 2, wherein the predetermined temperature rise is a temperature rise of the water flow after one full pipe cycle is completed.
4. The control method of a gas water heater according to claim 2, characterized in that the control method further comprises:
After the gas heating device is operated, stopping the gas heating device when the detection value of the water temperature detection device is larger than the sum of the preset return difference temperature and the target temperature.
5. The control method of a gas water heater according to claim 1, wherein the gas water heater further includes an antifreeze state, the control method comprising the steps of:
entering the anti-freezing state;
the circulating water pump operates;
the electric auxiliary heating device operates.
6. The control method of a gas water heater according to claim 5, further comprising an ambient temperature detection device, the control method further comprising:
and when the detection value of the environment temperature detection device is smaller than the preset freezing temperature, controlling the gas water heater to enter the antifreezing state.
7. The control method of a gas water heater according to claim 5, further comprising a water temperature detection device, the control method further comprising:
and stopping the circulating water pump and the electric auxiliary heating device when the detection value of the water temperature detection device is larger than the preset defrosting temperature.
8. The control method of a gas water heater according to claim 1, wherein the gas water heater further comprises an ambient temperature detection device, the gas water heater further comprises a water use state, the control method further comprising:
Entering the water use state;
when the detection value of the environment temperature detection device is larger than the preset summer temperature, the electric auxiliary heating device operates, and the gas heating device stops;
and when the detection value of the environment temperature detection device is smaller than the preset winter temperature, the electric auxiliary heating device and the gas heating device operate simultaneously.
9. A control method of a gas water heater according to claim 1, wherein the gas water heater further comprises a flow control device and a water flow sensor, the gas water heater further comprising a water consumption state, the control method comprising the steps of:
entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow.
10. The control method of a gas water heater according to claim 9, characterized in that the control method comprises:
entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow;
and when the water flow sensor detects the water flow, the electric auxiliary heating device is operated.
11. The control method of a gas water heater according to claim 10, characterized in that the control method comprises:
Entering the water use state;
when the water flow sensor detects that the water flow is stopped, the flow control device reduces the water outlet flow;
when the water flow sensor detects the water flow, the electric auxiliary heating device is operated;
the flow control means increases the flow rate of the water discharged after a predetermined time passes.
12. The control method of a gas water heater according to claim 1, wherein the circulating water pump is connected between a waterway inlet of the gas heating device and the electric auxiliary heating device.
13. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements a control method of a gas water heater as claimed in any one of claims 1-12.
14. A gas water heater, characterized in that it employs a control method of a gas water heater according to any one of claims 1-12.
CN202210910964.4A 2022-07-29 2022-07-29 Control method of gas water heater and gas water heater Pending CN117515921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210910964.4A CN117515921A (en) 2022-07-29 2022-07-29 Control method of gas water heater and gas water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210910964.4A CN117515921A (en) 2022-07-29 2022-07-29 Control method of gas water heater and gas water heater

Publications (1)

Publication Number Publication Date
CN117515921A true CN117515921A (en) 2024-02-06

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ID=89757223

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210910964.4A Pending CN117515921A (en) 2022-07-29 2022-07-29 Control method of gas water heater and gas water heater

Country Status (1)

Country Link
CN (1) CN117515921A (en)

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