CN115218478B - Electric water heater and working method thereof - Google Patents
Electric water heater and working method thereof Download PDFInfo
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- CN115218478B CN115218478B CN202110440162.7A CN202110440162A CN115218478B CN 115218478 B CN115218478 B CN 115218478B CN 202110440162 A CN202110440162 A CN 202110440162A CN 115218478 B CN115218478 B CN 115218478B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 717
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 58
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000009966 trimming Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 14
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to an electric water heater and a working method thereof, when the electric water heater is in a starting state and a water valve of the electric water heater is not opened, a controller presets a water adjusting valve according to a first water temperature, a second water temperature and a preset water outlet temperature of a mixed water outlet end; in addition, when the electric water heater is in a starting state and the water valve of the electric water heater is opened, the controller further carries out fine adjustment on the water adjusting valve according to the first water temperature, the second water temperature and the third water temperature so that the third water temperature accords with the preset water outlet temperature. Therefore, after the electric water heater is started, when the water valve of the electric water heater is not opened, the water-saving valve is pre-adjusted, so that the phenomenon that a user is scalded due to the fact that the temperature of hot water flowing out of the water outlet end of mixed water is too high can be avoided at the moment of opening the water-saving valve, in addition, the actual water outlet temperature adjustment (namely, the third water temperature) is fast in adjustment speed, and the control can be accurately carried out.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to an electric water heater and a working method thereof.
Background
In the conventional constant temperature technology of the electric water heater, an actual measured value of the actual water outlet temperature is compared with a set temperature value, and the constant temperature water valve is further adjusted according to a comparison result to achieve that the actual water outlet temperature reaches the set temperature. In the traditional adjusting scheme, the actual outlet water temperature of the output hot water is obtained after the hot water is output in the water heater, the constant-temperature water valve can be adjusted according to the actual outlet water temperature of the output hot water, the hysteresis of the whole process is serious, the adjusting speed is low, and the adverse phenomenon that the user is scalded by the hot water is most likely to occur in the initial stage of opening the constant-temperature water valve.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide an electric water heater which can effectively avoid the bad phenomenon that hot water scalds users, has higher actual outlet water temperature regulating speed and can be accurately controlled.
The second technical problem to be solved by the invention is to provide a working method of the electric water heater, which can effectively avoid the bad phenomenon that hot water scalds users, has higher actual outlet water temperature regulating speed and can be accurately controlled.
The first technical problem is solved by the following technical scheme:
an electric water heater, the electric water heater comprising: the body is provided with a liner for storing water; the hot water outlet pipe and the cold water inlet pipe are both arranged on the inner container and are communicated with the inner container; the water inlet end of the cold water is communicated with a cold water supply pipe, the hot water inlet end of the cold water is communicated with the hot water outlet pipe, and the regulating valve core can regulate water flow in the cold water inlet end to flow into a first water flow Q of the mixed water outlet end 1 The second water flow Q flowing into the mixed water outlet end from the water inlet end of the hot water can be regulated 2 The method comprises the steps of carrying out a first treatment on the surface of the A first temperature sensor, a second temperature sensor and a third temperature sensor,the first temperature sensor is used for detecting the first water temperature in the inner container, the second temperature sensor is used for detecting the second water temperature of the cold water inlet end, and the third temperature sensor is used for detecting the third water temperature of the mixed water outlet end; the controller is respectively and electrically connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the adjusting water valve; the controller is used for presetting the water regulating valve according to the first water temperature, the second water temperature and the preset water outlet temperature of the mixed water outlet end when the electric water heater is in a starting state and a water valve of the electric water heater is not started; the controller is further configured to fine tune the water adjusting valve according to the first water temperature, the second water temperature, and the third water temperature when the electric water heater is in a start-up state and the water valve of the electric water heater is turned on, so that the third water temperature corresponds to the preset water outlet temperature.
Compared with the background technology, the electric water heater has the beneficial effects that: when the electric water heater is in a starting state and a water valve of the electric water heater is not opened, the controller presets the water adjusting valve according to the first water temperature, the second water temperature and a preset water outlet temperature of the mixed water outlet end; in addition, when the electric water heater is in a starting state and the water valve of the electric water heater is opened, the controller further performs fine adjustment on the water adjusting valve according to the first water temperature, the second water temperature and the third water temperature so that the third water temperature accords with the preset water outlet temperature. Therefore, after the electric water heater is started, when the water valve of the electric water heater is not opened, the water-saving valve is pre-adjusted, so that the phenomenon that a user is scalded due to the fact that the temperature of hot water flowing out of the water outlet end of mixed water is too high can be avoided at the moment of opening the water-saving valve, and in addition, the actual water outlet temperature (namely, the third water temperature) is fast in adjusting speed and can be accurately controlled.
In one embodiment, the controller is further configured to adjust the water adjusting valve according to the first water temperature and the water temperature set in the liner when the electric water heater is in a standby state.
In one embodiment, the electric water heater further comprises a heater arranged on the body and used for heating water in the inner container, and an on-off switch, wherein the heater is electrically connected with the power bus through the on-off switch; the power bus is used for being electrically connected to a power supply device; the controller is electrically connected with the on-off switch, and the controller is further used for controlling the on-off switch to be turned on or off according to the first water temperature and the preset water temperature of the inner container when the electric water heater is in a starting state.
In one embodiment, the regulating water valve comprises a valve body and a stepping motor arranged on the valve body; the regulating valve core is rotationally arranged on the valve body, the stepping motor drives the regulating valve core to rotate, and the stepping motor is electrically connected with the controller; the regulating valve core is provided with a first stop block for blocking the cold water inlet end and a second stop block for blocking the hot water inlet end; the regulating valve core can synchronously regulate the first water flow Q when driving the first stop block and the second stop block to rotate 1 Size and second water flow Q 2 Size of the product.
In one embodiment, a first gear is mounted on the rotating shaft of the stepper motor, the end portion of the regulating valve core penetrates through the valve body and is provided with a second gear, and the first gear and the second gear are meshed with each other.
In one embodiment, the regulating water valve further comprises a reset switch arranged on the valve body, and the reset switch is electrically connected with the controller; when the first stop block completely blocks the cold water inlet end or the second stop block completely blocks the hot water inlet end, the reset switch can sense the rotating position of the regulating valve core and is used for resetting the stepping motor.
In one embodiment, the electric water heater further comprises a display module and/or an operation module arranged on the body; the display module and the operation module are electrically connected with the controller; the display module is used for displaying the first water temperature, the second water temperature, the third water temperature and the preset water outlet temperature; the operation module is used for adjusting the preset water temperature of the water outlet.
The second technical problem is solved by the following technical scheme:
the working method of the electric water heater comprises the following steps:
when the electric water heater is in a starting state and a water valve of the electric water heater is not opened, acquiring a first water temperature inside the inner container and a second water temperature of a cold water inlet end, and presetting an adjusting water valve of the electric water heater according to the first water temperature, the second water temperature and a preset water outlet temperature of a mixed water outlet end;
when the electric water heater is in a starting state and a water valve of the electric water heater is started, a first water temperature inside the inner container, a second water temperature of a cold water inlet end and a third water temperature of a mixed water outlet end are obtained, and the water adjusting valve is finely adjusted according to the first water temperature, the second water temperature and the third water temperature so that the third water temperature accords with the preset water outlet temperature.
Compared with the background technology, the working method of the electric water heater has the following beneficial effects: after the electric water heater is started, when the water valve of the electric water heater is not opened, the water-saving valve is pre-adjusted, so that the phenomenon that a user is scalded due to the fact that the temperature of hot water flowing out of the water outlet end of mixed water is too high can be avoided at the moment of opening the water-saving valve, in addition, the actual water outlet temperature adjustment (namely, the third water temperature) is fast in adjustment speed, and the control can be precisely carried out.
In one embodiment, when the electric water heater is in a standby state, a first water temperature inside the inner container is obtained, and the water adjusting valve is adjusted according to the first water temperature and the water temperature arranged inside the inner container.
In one embodiment, when the electric water heater is in a starting state, a first water temperature inside the inner container is obtained, and an on-off switch for connecting the heater to the power bus is controlled to be turned on or off according to the first water temperature and the preset water temperature of the inner container.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electric water heater according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an adjusting water valve and a cold water supply pipe of an electric water heater according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an adjusting valve core of an adjusting water valve of an electric water heater according to an embodiment of the present invention when the adjusting valve core rotates to a first limit position;
fig. 4 is a schematic structural diagram of an adjusting valve core of an adjusting water valve of an electric water heater according to an embodiment of the present invention when the adjusting valve core rotates to a second limit position;
fig. 5 is a schematic diagram of a water flow state of an adjusting valve core of an adjusting water valve of an electric water heater according to an embodiment of the present invention when the adjusting valve core is located at a first limit position;
FIG. 6 is a schematic diagram of a water flow state of an adjusting valve core of an adjusting water valve of an electric water heater according to an embodiment of the present invention;
FIG. 7 is a schematic diagram showing a water flow state of an adjusting valve core of an adjusting water valve of an electric water heater according to an embodiment of the present invention when the adjusting valve core is located at a position between a first limit position and a second limit position;
fig. 8 is a schematic control structure of an electric water heater according to an embodiment of the invention.
Reference numerals:
10. a body; 11. an inner container; 20. a hot water outlet pipe; 30. a cold water inlet pipe; 40. adjusting a water valve; 41. a cold water inlet end; 42. a hot water inlet end; 43. mixing a water outlet end; 44. adjusting the valve core; 441. a first stopper; 442. a second stopper; 45. a valve body; 46. a stepping motor; 47. a first gear; 48. a second gear; 49. a reset switch; 51. a first temperature sensor; 52. a second temperature sensor; 53. a third temperature sensor; 54. a water flow sensor; 60. a controller; 70. a cold water supply pipe; 80. a heater; 91. an on-off switch; 92. a power bus; 93. a weak current module; 94. a display module; 95. and an operation module.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 and 2, fig. 1 shows a schematic structural diagram of an electric water heater according to an embodiment of the invention, and fig. 2 shows a schematic structural diagram of a regulating water valve 40 and a cold water supply pipe 70 of the electric water heater according to an embodiment of the invention. An embodiment of the present invention provides an electric water heater, including: the water heater comprises a body 10, a hot water outlet pipe 20, a cold water inlet pipe 30, a regulating water valve 40, a first temperature sensor 51, a second temperature sensor 52, a third temperature sensor 53 and a controller 60. The body 10 is provided with a liner 11 for storing water. The hot water outlet pipe 20 and the cold water inlet pipe 30 are both arranged on the inner container 11 and are communicated with the inner container 11. The regulating water valve 40 is provided with a cold water inlet end 41, a hot water inlet end 42, a mixed water outlet end 43 and a regulating valve core 44. The cold water inlet end 41 and the cold water inlet pipe 30 are both used for being communicated with the cold water supply pipe 70, the hot water inlet end 42 is communicated with the hot water outlet pipe 20, and the regulating valve core 44 can regulate the first water flow Q of the water flow in the cold water inlet end 41 flowing into the mixed water outlet end 43 1 And also to regulate the water at the hot water inlet end 42Second water flow Q flowing into mixed water outlet end 43 2 . The first temperature sensor 51 is used for detecting a first water temperature inside the liner 11, the second temperature sensor 52 is used for detecting a second water temperature of the cold water inlet end 41, and the third temperature sensor 53 is used for detecting a third water temperature of the mixed water outlet end 43.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating a control structure of an electric water heater according to an embodiment of the invention. The controller 60 is electrically connected to the first temperature sensor 51, the second temperature sensor 52, the third temperature sensor 53, and the regulating water valve 40, respectively. The controller 60 is configured to preset the water adjusting valve 40 according to the first water temperature, the second water temperature, and the preset water outlet temperature of the mixed water outlet 43 when the electric water heater is in a turned-on state and the water valve of the electric water heater is not turned on. The controller 60 is further configured to fine-tune the water adjusting valve 40 according to the first water temperature, the second water temperature, and the third water temperature when the electric water heater is in a turned-on state and the water valve of the electric water heater is turned on, so that the third water temperature corresponds to a preset water outlet temperature.
When the electric water heater is in a start-up state and the water valve of the electric water heater is not opened, the controller 60 pre-adjusts the water valve 40 according to the first water temperature, the second water temperature and the preset water outlet temperature of the mixed water outlet end 43; in addition, when the electric water heater is in the on state and the water valve of the electric water heater is turned on, the controller 60 further performs fine adjustment on the water adjusting valve 40 according to the first water temperature, the second water temperature, and the third water temperature so that the third water temperature corresponds to the preset water outlet temperature. Therefore, after the electric water heater is started, when the water valve of the electric water heater is not opened, the adjusting water valve 40 is pre-adjusted, so that the phenomenon that the user is scalded due to the fact that the temperature of the hot water flowing out of the mixed water outlet end 43 is too high at the moment of opening the water valve can be avoided, and in addition, the actual water outlet temperature (namely the third water temperature) is fast in adjusting speed and can be accurately controlled.
Referring to fig. 1 and 2, specifically, the method for presetting the water regulating valve 40 according to the first water temperature, the second water temperature and the preset water outlet temperature of the mixed water outlet 43 includes:
according to the rotation quantityTo adjust the rotational position of the regulator spool 44 of the regulator valve 40. Wherein θ is the rotation amount of the regulating valve core 44, and by changing the rotation amount θ, the water flow of the first water flow can be correspondingly regulated to be Q 1 And adjusting the water flow rate of the second water flow to be Q 2 Is of a size of (a) and (b). Q is the total water flow of the electric water heater, Q 1 For the flow rate of the first water flow supplied to the cold water inlet end 41, Q 2 T for the flow rate of the second water flow supplied to the cold water inlet pipe 30 1 T is the temperature of the water in the inner container 11, i.e. the temperature detected by the first temperature sensor 51 2 For the temperature of the cold water inlet 41, i.e. the temperature detected by the second temperature sensor 52, T 3 The water temperature at the mixed water outlet 43, i.e., the temperature detected by the third temperature sensor 53.
It should be noted that the water flow rate supplied from the hot water outlet pipe 20 to the hot water inlet end 42 of the electric water heater is Q 2 As can be seen from the principle of in-out balance, q=q 1 +Q 2 The method comprises the steps of carrying out a first treatment on the surface of the And according to the law of conservation of energy, the heat absorbed by cold water in the process of mixing water is equal to the heat released by hot water, namely CQ 1 (T 3 -T 2 )＝CQ 2 (T 1 -T 3 ) Wherein C is the specific heat capacity constant of water, thus havingBecause of->Is the mixing proportion of the hot water in the water mixing process, so that in the actual adjusting process, the actual rotation angle theta is the rotation quantity of the total rotation angle alpha according to the ratio, namely +.>
In addition, the method of fine-tuning the adjustment water valve 40 according to the first water temperature, the second water temperature, and the third water temperature so that the third water temperature corresponds to the preset outlet water temperature includes:
if the third water temperature is equal to the preset water outlet water temperature, the position of the adjusting valve core 44 of the adjusting water valve 40 is kept unchanged, namely the stepping motor 46 for controlling the adjusting valve core 44 to rotate is kept unchanged, and adjustment is not needed; if the third water temperature is higher than the preset water outlet temperature, the position of the adjusting valve core 44 of the adjusting water valve 40 needs to be adjusted to enable the first water flow Q 1 Increase, and second water flow Q 2 The reduction, i.e. the controller 60 controls the stepper motor 46 to rotate towards the direction B', and drives the regulating valve core 44 to synchronously rotate towards the direction B; if the third water temperature is lower than the preset water outlet temperature, the position of the adjusting valve core 44 of the adjusting water valve 40 needs to be adjusted to enable the first water flow Q 1 Reduction, and second water flow Q 2 The increase, i.e., the controller 60 controls the stepper motor 46 to rotate in the direction of A', which drives the regulator spool 44 to rotate in the direction of A in synchronization.
Thus, when the third water temperature is equal to the preset water outlet temperature, the ratio of cold water to hot water is proper, and the adjustment of the ratio of cold water to hot water is not needed, so that the position of the stepping motor 46 is kept unchanged; when the third water temperature is higher than the preset water outlet temperature, it indicates that the hot water proportion is larger and the cold water proportion is smaller in the mixed water proportion, so that the stepping motor 46 is controlled to rotate in the direction B', the second gear 48 is driven to rotate in the direction B, the regulating valve core 44 is further driven to rotate in the direction B, and the first water flow Q of the cold water inlet end 41 is increased 1 Reducing the second water flow Q of the hot water inlet end 42 2 Opening degree of (3); conversely, when the third water temperature is lower than the preset water outlet temperature, it means that the ratio of hot water to cold water is smaller and the ratio of cold water is larger in the mixed water proportion, so that the stepping motor 46 is controlled to rotate in the direction A', the second gear 48 is driven to rotate in the direction A, the regulating valve core 44 is further driven to rotate in the direction A, and the first water flow Q of the cold water inlet end 41 is reduced 1 Increasing the second water flow Q of the hot water inlet end 42 2 Is a constant value.
In addition, the electric water heater further comprises a water flow sensor 54 disposed on the cold water supply pipe 70, wherein the water flow sensor 54 is used for acquiring the water flow on the cold water supply pipe 70, i.e. the total water flow Q of the electric water heater. The water flow sensor 54 is electrically connected with the controller 60, and feeds back the collected water flow information on the cold water supply pipe 70 to the controller 60.
It should be noted that, in general, in order to prevent the hot water at the mixed water outlet from scalding the user, the preset water outlet temperature is usually set within a range of 30 ℃ to 55 ℃, and if the temperature is set to be higher than the temperature within the range, particularly to be other values higher than 55 ℃, special operations need to be performed on the operation module 95 of the electric water heater. Specific operations such as: setting of the parameter can be performed by pressing the setting button 3S of the operation module 95 (specifically, for example, a touch panel) for a long time or by unlocking the combination buttons.
It should be noted that, the water valve is not shown in the figure, and is disposed on the drain pipe connected to the mixed water outlet end, when the water valve is opened, the water in the electric water heater or the water in the cold water supply pipe 70 is discharged outwards through the mixed water outlet end and the drain pipe; when the water valve is closed, the water is not discharged out from the drain pipe.
Referring to fig. 1 and 8, in one embodiment, the controller 60 is further configured to adjust the water valve 40 according to the first water temperature and the water temperature in the inner container 11 when the electric water heater is in the standby state. Thus, when the water heater is in the standby state, the controller 60 can adjust the water adjusting valve 40 according to the first water temperature and the water temperature in the inner container 11, so that the adverse phenomenon of scalding the user caused by opening the water valve in the standby state can be avoided.
Referring to fig. 3 to 6, fig. 3 is a schematic diagram showing a structure when the adjusting valve core 44 of the adjusting valve 40 of the electric water heater according to an embodiment of the present invention is rotated to a first limit position, fig. 4 is a schematic diagram showing a structure when the adjusting valve core 44 of the adjusting valve 40 of the electric water heater according to an embodiment of the present invention is rotated to a second limit position, fig. 5 is a schematic diagram showing a water flow state when the adjusting valve core 44 of the adjusting valve 40 of the electric water heater according to an embodiment of the present invention is positioned at the first limit position, and fig. 6 is a schematic diagram showing a water flow state when the adjusting valve core 44 of the adjusting valve 40 of the electric water heater according to an embodiment of the present invention is positioned at the second limit position. In particular, when heating waterWhen the device is in a standby state, the method for adjusting the water adjusting valve 40 according to the first water temperature and the water temperature arranged in the inner container 11 comprises the following steps: when the first water temperature is lower than the water temperature set in the liner 11, the controller 60 controls the water regulating valve 40 to operate in the second water flow Q 2 For example, to a maximum opening degree (as shown in fig. 4 and 6); when the first water temperature is higher than the water temperature set in the liner 11, the controller 60 controls the water regulating valve 40 to operate in the second water flow Q 2 For example, to a minimum opening (as shown in fig. 3 and 5).
It should be noted that, the water temperature in the inner container 11 is, for example, 42 ℃, which is usually directly built in an electric water heater, and cannot be modified by a user.
It should be noted that the start-up state refers to a state when the electric water heater is powered on and the start-up button is pressed, and at this time, the electric water heater starts to work; the standby state refers to a state in which the electric water heater is powered on but the start button is not pressed, and the electric water heater is not put into operation at this time.
Referring to fig. 1 and 8, in one embodiment, the electric water heater further includes a heater 80 disposed on the body 10 and heating water in the inner container 11, and an on-off switch 91. The heater 80 is electrically connected to a power bus 92 through an on-off switch 91. The power bus 92 is used for electrical connection to a power supply device. The controller 60 is electrically connected to the on-off switch 91, and the controller 60 is further configured to control the on-off switch 91 to be turned on or off according to the first water temperature and the preset water temperature of the inner container 11 when the electric water heater is in the on state.
The preset water temperature of the inner container 11 is set by the user according to the user's own needs, and the preset water temperature of the inner container 11 is generally set to 40 ℃ to 45 ℃, but may be any other water temperature, and is not limited herein.
Specifically, when the electric water heater is in a power-on state, the method for controlling the on/off switch 91 to be turned on or off according to the first water temperature and the preset water temperature of the inner container 11 includes: when the first water temperature is greater than or equal to the preset water temperature of the inner container 11, the controller 60 controls the on-off switch 91 to be turned off, and at this time, the heater 80 stops heating due to the disconnection from the power bus 92; when the first water temperature is smaller than the preset water temperature of the inner container 11, the controller 60 controls the on-off switch 91 to be turned on, and at the moment, the heater 80 is turned on by the power bus 92, so that the heater 80 heats and works, and the water temperature in the inner container 11 can be increased until the preset water temperature of the inner container 11 is reached.
In addition, in one embodiment, a temperature limiter is further disposed on the power bus 92, and when the temperature of the temperature limiter exceeds the standard, the power bus 92 is automatically disconnected, so that a better protection effect is achieved, and the safety is higher.
In addition, the power bus 92 is electrically connected to the controller 60 through the weak current module 93. The weak current module 93 can convert the strong current input from the power bus 92 into the weak current required by the controller 60, thereby realizing the normal operation of the controller 60.
Referring to fig. 2-4, in one embodiment, the regulator valve 40 includes a valve body 45 and a stepper motor 46 disposed on the valve body 45. The adjusting valve core 44 is rotatably disposed on the valve body 45, the stepper motor 46 drives the adjusting valve core 44 to rotate, and the stepper motor 46 is electrically connected with the controller 60. The regulating spool 44 is provided with a first stopper 441 for blocking the cold water intake end 41, and a second stopper 442 for blocking the hot water intake end 42. The first water flow Q can be synchronously regulated when the regulating valve core 44 drives the first stop 441 and the second stop 442 to rotate 1 Size and second water flow Q 2 Size of the product. Specifically, when the stepper motor 46 drives the regulating valve core 44 to rotate toward the direction B to the first limit position (see fig. 3 and 5), the second stopper 442 completely seals the hot water inlet 42, and the second water flow Q 2 The first stopper 441 fully opens the cold water inlet end 41, the first water flow Q 1 Is adjusted to the maximum; when the stepper motor 46 drives the regulating valve core 44 to rotate toward the direction A to the second limit position (see FIG. 4 and FIG. 6), the second stop 442 completely opens the hot water inlet 42, and the second water flow Q 2 The opening degree of the valve (1) is regulated to the maximum, the first stop 441 completely seals the cold water inlet end 41, and the second water flow Q 2 Is adjusted to a minimum; when the stepper motor 46 drives the regulating spool 44 to rotate to a position between the first limit position and the second limit position (see fig. 7), the second stopper 442 partially opens the hot water inlet port 42, the first stopper 441 partially opens the cold water inlet port 41,the hot water inlet end 42 enters the hot water (second water flow Q) in the valve body 45 2 ) With the cold water inlet end 41 into the valve body 45 (first water flow Q 1 ) Mix with each other and drain outwardly from the mixed water outlet end 43.
Referring again to fig. 2, in one embodiment, a first gear 47 is mounted on the shaft of the stepper motor 46, and the end of the adjustment valve core 44 extends through the valve body 45 and is provided with a second gear 48, the first gear 47 intermeshes with the second gear 48.
Referring again to fig. 2 and 8, in one embodiment, the regulator valve 40 further includes a reset switch 49 disposed on the valve body 45, wherein the reset switch 49 is electrically connected to the controller 60. When the first stop 441 completely blocks the cold water inlet 41 or the second stop 442 completely blocks the hot water inlet 42, the reset switch 49 can sense the rotational position of the regulating valve core 44 and is used for resetting the stepper motor 46. Specifically, when the first stopper 441 completely blocks the cold water inlet end 41 or the second stopper 442 completely blocks the hot water inlet end 42, the reset switch 49 and the second gear 48 contact each other and send a contact signal to the controller 60, and the controller 60 controls the stepping motor 46 to reset according to the contact signal. In this way, when the first stop 441 completely blocks the cold water inlet end 41 or the second stop 442 completely blocks the hot water inlet end 42, the reset switch 49 sends a signal to the controller 60 to sense the rotation position of the regulating valve core 44, the controller 60 correspondingly controls the stepping motor 46 to stop working and reset, and after the stepping motor 46 is reset, the rotation angle of the regulating valve core 44 can be controlled more accurately, so that the first water flow Q can be controlled more accurately 1 Opening size of (a) and second water flow Q 2 The opening degree of the water heater is further higher in actual water outlet temperature (namely third water temperature) adjusting speed, and the water heater can be accurately controlled.
Referring to fig. 8, in one embodiment, the electric water heater further includes a display module 94 and/or an operation module 95 disposed on the body 10. The display module 94 and the operation module 95 are electrically connected with the controller 60; the display module 94 is configured to display the first water temperature, the second water temperature, the third water temperature, and the preset water temperature; the operation module 95 is used for adjusting the preset water temperature.
Further, the display module 94 can be further used for displaying the water temperature set in the inner container 11 and the preset water temperature of the inner container 11, and displaying the total water flow rate Q of the electric water heater. In addition, the operation module 95 can also be used for adjusting the preset water temperature of the liner 11. Specifically, the display module 94 and the operation module 95 are specifically, for example, disposed in a touch screen, or may be separately disposed according to actual needs, which is not limited herein.
Further, the first temperature sensor 51 is specifically provided in the liner 11. The second temperature sensor 52 is specifically disposed on the cold water inlet end 41 or the cold water supply pipe 70. The third temperature sensor 53 is specifically disposed on the mixed water outlet end 43.
In the infringement comparison, the "cold water supply pipe 70" may be a part of the "regulating water valve 40", that is, the "cold water supply pipe 70" and the "other part of the regulating water valve 40" are integrally manufactured; or may be a separate component from the remainder of the regulator valve 40, i.e., the chilled water supply pipe 70 may be manufactured separately and then integrated with the remainder of the regulator valve 40. As shown in FIG. 2, in one embodiment, the "cold water supply line 70" is part of an integrally formed manufacture of the "regulating water valve 40".
Referring again to fig. 1-4, in one embodiment, a method of operating an electric water heater includes the steps of:
when the electric water heater is in a starting state and a water valve of the electric water heater is not opened, acquiring a first water temperature inside the inner container 11 and a second water temperature of the cold water inlet end 41, and presetting an adjusting water valve 40 of the electric water heater according to the first water temperature, the second water temperature and a preset water outlet temperature of the mixed water outlet end 43;
when the electric water heater is in a starting state and the water valve of the electric water heater is opened, the first water temperature inside the inner container 11, the second water temperature of the cold water inlet end 41 and the third water temperature of the mixed water outlet end 43 are obtained, and the adjusting water valve 40 is finely adjusted according to the first water temperature, the second water temperature and the third water temperature so that the third water temperature corresponds to the preset water outlet temperature.
In the above-mentioned operation method of the electric water heater, after the electric water heater is started, when the water valve of the electric water heater is not opened, the water regulating valve 40 is pre-adjusted, so that the bad phenomenon that the user is scalded due to the fact that the temperature of the hot water flowing out of the mixed water outlet end 43 is too high can be avoided at the moment of opening the water valve, in addition, the actual water outlet temperature regulating (namely the third water temperature) is fast in regulating speed, and the accurate control can be realized.
Further, when the electric water heater is in the standby state, the first water temperature inside the inner container 11 is obtained, and the water adjusting valve 40 is adjusted according to the first water temperature and the water temperature inside the inner container 11. Thus, when the water heater is in the standby state, the controller 60 can adjust the water adjusting valve 40 according to the first water temperature and the water temperature in the inner container 11, so that the adverse phenomenon of scalding the user caused by opening the water valve in the standby state can be avoided. Specifically, when the electric water heater is in the standby state, the method for adjusting the water valve 40 according to the first water temperature and the water temperature in the inner container 11 includes: when the first water temperature is lower than the water temperature set in the liner 11, the controller 60 controls the water regulating valve 40 to operate in the second water flow Q 2 For example, to a state of maximum opening; when the first water temperature is higher than the water temperature set in the liner 11, the controller 60 controls the water regulating valve 40 to operate in the second water flow Q 2 For example, to a state of minimum opening. In addition, the water temperature in the inner container 11 is, for example, 42 ℃, which is usually directly built in the electric water heater, and cannot be modified by a user.
In one embodiment, when the electric water heater is in a power-on state, a first water temperature inside the inner container 11 is obtained, and the on-off switch 91 of the heater 80 for connecting to the power bus 92 is controlled to be turned on or off according to the first water temperature and a preset water temperature of the inner container 11. Therefore, after the electric water heater is started, the first water temperature in the inner container 11 can be controlled to be the preset water temperature of the inner container 11. Specifically, when the electric water heater is in a power-on state, the method for controlling the on/off switch 91 to be turned on or off according to the first water temperature and the preset water temperature of the inner container 11 includes: when the first water temperature is greater than or equal to the preset water temperature of the inner container 11, the controller 60 controls the on-off switch 91 to be turned off, and at this time, the heater 80 stops heating due to the disconnection from the power bus 92; when the first water temperature is smaller than the preset water temperature of the inner container 11, the controller 60 controls the on-off switch 91 to be turned on, and at the moment, the heater 80 is turned on by the power bus 92, so that the heater 80 heats and works, and the water temperature in the inner container 11 can be increased until the preset water temperature of the inner container 11 is reached.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
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, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Claims (10)
1. An electric water heater, comprising:
the water storage device comprises a body (10), wherein the body (10) is provided with a liner (11) for storing water;
the hot water outlet pipe (20) and the cold water inlet pipe (30), wherein the hot water outlet pipe (20) and the cold water inlet pipe (30) are arranged on the inner container (11) and are communicated with the inner container (11);
the water inlet valve (41), the hot water inlet end (42), the mixed water outlet end (43) and the adjusting valve core (44) are arranged on the adjusting valve (40), the cold water inlet end (41) and the cold water inlet pipe (30) are both used for being communicated with the cold water supply pipe (70), the hot water inlet end (42) is communicated with the hot water outlet pipe (20), and the adjusting valve core (44) can adjust the first water flow of the water flow flowing into the mixed water outlet end (43) in the cold water inlet end (41)It is also possible to adjust the second water flow of the hot water inlet end (42) into the mixed water outlet end (43)>The method comprises the steps of carrying out a first treatment on the surface of the Wherein the regulating water valve (40) comprises a valve body (45), and the regulating valve core (44) is rotatably arranged on the valve body (45); the regulating valve core (44) is provided with a first stop block (441) for blocking the cold water inlet end (41) and a second stop block (442) for blocking the hot water inlet end (42); the first water flow can be synchronously regulated when the regulating valve core (44) drives the first stop block (441) and the second stop block (442) to rotate>Size and second water flow->Size of the material;
a first temperature sensor (51), a second temperature sensor (52) and a third temperature sensor (53), wherein the first temperature sensor (51) is used for detecting a first water temperature inside the liner (11), the second temperature sensor (52) is used for detecting a second water temperature of the cold water inlet end (41), and the third temperature sensor (53) is used for detecting a third water temperature of the mixed water outlet end (43);
the controller (60) is electrically connected with the first temperature sensor (51), the second temperature sensor (52), the third temperature sensor (53) and the regulating water valve (40) respectively; the controller (60) is used for presetting the water regulating valve (40) according to the first water temperature, the second water temperature and the preset water outlet temperature of the mixed water outlet end (43) when the electric water heater is in a starting state and a water valve of the electric water heater is not started; the controller (60) is further configured to, when the electric water heater is in a turned-on state and a water valve of the electric water heater is turned on, fine-tune the water regulating valve (40) according to the first water temperature, the second water temperature, and the third water temperature so that the third water temperature corresponds to the preset water outlet water temperature; the controller (60) is further used for adjusting the water adjusting valve (40) according to the first water temperature and the water temperature arranged in the inner container (11) when the electric water heater is in a standby state.
2. The electric water heater according to claim 1, wherein the method of pre-adjusting the regulating water valve (40) according to the first water temperature, the second water temperature and a preset water outlet temperature of the mixed water outlet (43) comprises:
according to the rotation quantityTo adjust the rotational position of a control valve element (44) of a control water valve (40), wherein +.>To adjust the rotational quantity of the valve element (44), the rotational quantity is varied>Can correspondingly adjust the water flow of the first water flow to be +.>Is used for adjusting the water flow of the second water flow to be +.>Size of->Is the total water flow of the electric water heater>For the water flow of the first water flow supplied to the cold water intake (41), +.>For the water flow of the second water flow supplied to the cold water inlet pipe (30), a +.>For the temperature detected by the first temperature sensor (51), a +.>For the temperature detected by the second temperature sensor (52), a +.>Is the temperature detected by the third temperature sensor (53).
3. The electric water heater according to claim 1, further comprising a heater (80) provided on the body (10) and heating water in the inner container (11), and an on-off switch (91), the heater (80) being electrically connected to a power bus (92) through the on-off switch (91); the power bus (92) is used for being electrically connected to a power supply device; the controller (60) is electrically connected with the on-off switch (91), and the controller (60) is further configured to control the on-off switch (91) to be turned on or off according to the first water temperature and the preset water temperature of the liner (11) when the electric water heater is in a start-up state.
4. The electric water heater according to claim 1, wherein the regulating water valve (40) further comprises a stepper motor (46) provided on the valve body (45); the stepping motor (46) drives the adjusting valve core (44) to rotate, and the stepping motor (46) is electrically connected with the controller (60).
5. The electric water heater as claimed in claim 4, wherein a first gear (47) is mounted on a rotating shaft of the stepper motor (46), an end portion of the adjusting valve core (44) penetrates through the valve body (45) and is provided with a second gear (48), and the first gear (47) is meshed with the second gear (48).
6. The electric water heater of claim 4, wherein the regulating water valve (40) further comprises a reset switch (49) disposed on the valve body (45), the reset switch (49) being electrically connected to the controller (60); when the first stop block (441) completely blocks the cold water inlet end (41) or the second stop block (442) completely blocks the hot water inlet end (42), the reset switch (49) can sense the rotating position of the regulating valve core (44) and is used for resetting the stepping motor (46).
7. The electric water heater according to claim 1, further comprising a display module (94) and/or an operating module (95) provided on the body (10); the display module (94) and the operation module (95) are electrically connected with the controller (60); the display module (94) is used for displaying the first water temperature, the second water temperature, the third water temperature and the preset water outlet temperature; the operation module (95) is used for adjusting the preset water temperature of the water outlet.
8. A method of operating an electric water heater as claimed in any one of claims 1 to 7, comprising the steps of:
when the electric water heater is in a starting state and a water valve of the electric water heater is not opened, acquiring a first water temperature inside the inner container (11) and a second water temperature of a cold water inlet end (41), and presetting an adjusting water valve (40) of the electric water heater according to the first water temperature, the second water temperature and a preset water outlet water temperature of a mixed water outlet end (43);
when the electric water heater is in a starting state and a water valve of the electric water heater is started, acquiring a first water temperature inside the inner container (11), a second water temperature of a cold water inlet end (41) and a third water temperature of a mixed water outlet end (43), and fine-adjusting the water regulating valve (40) according to the first water temperature, the second water temperature and the third water temperature so that the third water temperature accords with the preset water outlet water temperature;
when the electric water heater is in a standby state, a first water temperature in the inner container (11) is obtained, and the water adjusting valve (40) is adjusted according to the first water temperature and the water temperature in the inner container (11).
9. The method of operating an electric water heater according to claim 8, wherein the method of trimming the regulator valve (40) to bring the third water temperature into conformity with the preset outlet water temperature based on the first water temperature, the second water temperature, and the third water temperature comprises:
if the third water temperature is equal to the preset water outlet water temperature, the position of an adjusting valve core (44) of the adjusting water valve (40) is kept unchanged; if the third water temperature is higher than the preset water outlet temperature, the position of the adjusting valve core (44) of the adjusting water valve (40) needs to be adjusted to enable the first water flowIncrease, and second water flow->A reduction; if at firstThe three water temperatures are lower than the preset water outlet temperature, and the position of the adjusting valve core (44) of the adjusting water valve (40) needs to be adjusted to enable the first water flow to be +.>Reduced, and a second water flow +.>Increasing.
10. The method according to claim 8, wherein when the electric water heater is in a start-up state, a first water temperature inside the inner container (11) is obtained, and the on-off switch (91) of the heater (80) for connecting to the power bus (92) is controlled to be turned on or off according to the first water temperature and a preset water temperature of the inner container (11).
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| CN202110440162.7A CN115218478B (en) | 2021-04-21 | 2021-04-21 | Electric water heater and working method thereof |
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