CN105222354A - Control method and device, control chip and water heater - Google Patents
Control method and device, control chip and water heater Download PDFInfo
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- CN105222354A CN105222354A CN201410310680.7A CN201410310680A CN105222354A CN 105222354 A CN105222354 A CN 105222354A CN 201410310680 A CN201410310680 A CN 201410310680A CN 105222354 A CN105222354 A CN 105222354A
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Abstract
The embodiment of the invention discloses a control method, a control device, a control chip and a water heater, wherein whether internet cloud control is effective or not is monitored through the control chip in the water heater, when the fact that the internet cloud control is invalid is monitored, the control chip reads the requirement setting of a user on a water heater unit and controls the water heater unit to operate according to the requirement setting of the user, and the defects that when the internet cloud control is abnormal, the water heater cannot operate due to lack of control of an internet cloud end, and hot water cannot be prepared are overcome.
Description
Technical Field
The invention relates to the technical field of control, in particular to a control method, a control device, a control chip and a water heater.
Background
For the water heater based on the internet cloud control, in normal use, the running states of all parts of the water heater are completely controlled by the internet cloud, including the control of starting/stopping of a unit, the control of the frequency adjustment of a compressor/a fan in the unit, the control of an electric heating switch, the step number adjustment of an electronic expansion valve, the control of defrosting reversing of a four-way valve and the like, and the water heater cannot control the unit. Therefore, when the internet cloud control is abnormal, namely the internet cloud control is invalid, the water heater cannot operate due to lack of control of the internet cloud, hot water cannot be produced, and inconvenience is brought to life of a user.
Therefore, how to make a water heater based on internet cloud control prepare hot water when the internet is abnormal becomes an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a control method, a control device and a control chip-level water heater, so that the water heater based on Internet cloud control can produce hot water when the Internet is abnormal.
In order to achieve the purpose, the invention provides the following technical scheme:
a control method is applied to a water heater based on Internet cloud control, the water heater based on the Internet cloud control is provided with a control chip, and the method comprises the following steps:
the control chip monitors whether internet cloud control is effective or not;
when the situation that the internet cloud control is invalid is monitored, the control chip reads the requirement setting of a user on the unit;
and the control chip controls the unit to set and operate according to the requirements of users.
Preferably, the method for setting the demand of the user on the unit includes: and starting up or shutting down.
In the above method, preferably, when the demand of the user on the unit is set to start, the controlling the unit by the control chip to operate according to the demand of the user includes:
the control chip controls the unit to heat water in the water tank.
In the above method, preferably, the step of controlling the unit to heat the water in the water tank by the control chip includes:
the control chip reads the current running state information of the unit;
if the current operation state of the unit is determined to be a heating operation state through the operation state information, the control chip controls the unit to heat water in the water tank according to the current operation parameters of the unit;
and if the current operation state of the unit is determined to be the standby state through the operation state information, the control chip reads a temperature record value of water in the water tank and a temperature value set by a user, and when the temperature record value of the water in the water tank and the temperature value set by the user meet preset heating operation conditions, the control chip controls the unit to heat the water in the water tank.
In the above method, preferably, the step of enabling the temperature recorded value of the water in the water tank and the temperature value set by the user to meet the preset heating operation condition includes:
and the difference value between the temperature value set by the user and the temperature record value of the water in the water tank is greater than or equal to a preset value, and the preset value is greater than zero.
In the method, preferably, when the demand of the user on the unit is set to be shutdown, the control chip controls the unit to be shutdown.
In the method, preferably, when the temperature of the water in the water tank is greater than or equal to a temperature value set by a user, the control chip controls the unit to stop heating.
The above method, preferably, further comprises:
and when the situation that the internet cloud control is invalid is monitored, alarming.
A control device is applied to a control chip in a water heater based on Internet cloud control, and comprises:
the monitoring module is used for monitoring whether the internet cloud control is effective or not;
the reading module is used for reading the demand setting of the user on the unit when the monitoring module monitors that the internet cloud control is invalid;
and the first control module is used for controlling the unit to set and operate according to the user requirements.
Preferably, the above device, wherein the setting of the demand of the user on the unit includes: and starting up or shutting down.
Preferably, the first control module is specifically configured to control the unit to heat water in the water tank when the demand of the user on the unit is set to start.
In the above apparatus, preferably, the first control module includes:
the reading unit is used for reading the current running state information of the unit when the demand of the user on the unit is set as starting;
the first control unit is used for controlling the unit to heat water in the water tank according to the current operation parameters of the unit when the current operation state of the unit is determined to be a heating operation state through the operation state information;
and the second control unit is used for reading a temperature record value of water in the water tank and a temperature value set by a user when the current operation state of the unit is determined to be a standby state through the operation state information, and controlling the unit to heat the water in the water tank when the temperature record value of the water in the water tank and the temperature value set by the user meet preset heating operation conditions.
Preferably, the control device further includes:
and the second control module is used for controlling the unit to be shut down when the demand of the user on the unit is set to be shut down.
Preferably, the control device further includes:
and the third control module is used for controlling the unit to stop heating when the water temperature in the water tank is greater than or equal to the temperature value set by the user.
The above apparatus, preferably, further comprises:
and the alarm module is used for giving an alarm when the condition that the cloud control of the Internet is invalid is monitored.
A control chip incorporating a control device as claimed in any one of the above.
A water heater based on internet cloud control comprises the control chip.
According to the scheme, whether the control chip in the water heater is used for effectively monitoring the Internet cloud control or not is judged, when the Internet cloud control is monitored to be invalid, the control chip reads the requirement setting of the user on the water heater unit, the water heater unit is controlled to operate according to the requirement setting of the user, and the defect that when the Internet cloud control is abnormal, the water heater cannot operate due to lack of control of the Internet cloud end, and hot water cannot be prepared is overcome.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an implementation of a control method provided in an embodiment of the present application;
FIG. 2 is a flow chart of an implementation of the control chip controlling the set of control units to heat the water in the water tank according to the embodiment of the present application;
fig. 3 is a flowchart of another implementation of the control method provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a first control module according to an embodiment of the present disclosure;
fig. 6 is another schematic structural diagram of a control device according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another control device provided in the embodiment of the present application;
fig. 8 is a schematic structural diagram of another control device according to an embodiment of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced otherwise than as specifically illustrated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The control method provided by the embodiment of the application is applied to the water heater based on the internet cloud control. The water heater based on internet cloud control generally has the following characteristics:
1. the system is provided with a signal acquisition and transmission chip, can acquire real-time operation parameters of a unit in the water heater based on Internet cloud control, and can transmit the real-time operation parameters of the unit to an Internet cloud; the real-time operation parameters of the unit may include:
temperature parameters: ambient temperature, compressor suction port temperature, compressor discharge port temperature, water temperature in the water tank, etc.;
pressure parameters: pressure at the compressor suction port, pressure at the compressor discharge port, etc.;
switching value parameters: pressure switches, water flow switches, etc.;
the operating state parameters are as follows: the running frequency of the compressor, the running frequency of the fan, the step number of the electronic expansion valve, the power-on or power-off state of the four-way reversing valve, the on/off setting of a user, the temperature set by the user and the like.
2. The device is provided with a memory chip, and can record the running state parameters such as the running frequency of a compressor, the running frequency of a fan, the step number of an electronic expansion valve, the power-on or power-off state of a four-way reversing valve, the power-on/off setting of a user, the temperature set by the user and the like in the first running state of a unit; when the unit is stopped or is not in standby operation, the memory chip stops recording.
3. The controller is provided with a manual operation controller, and can receive operations such as on/off, temperature setting and the like manually set by a user.
4. The control chip is provided with a control chip which can receive control instructions of the Internet and control controlled objects (namely, the units) to act according to the corresponding control instructions.
The following provides a detailed description of examples of the present application.
An implementation flowchart of the control method provided in the embodiment of the present application is shown in fig. 1, and may include:
step S11: the control chip detects whether the internet cloud control is effective or not;
in the embodiment of the application, whether internet cloud control is effective or not can be determined by monitoring whether the communication connection between the water heater and the internet cloud is normal or not.
Step S12: when the situation that the internet cloud control is invalid is monitored, the control chip reads the requirement setting of a user on the unit;
preferably, when the communication connection between the water heater and the internet cloud is disconnected or the water heater and the internet cloud cannot communicate, it is determined that the internet cloud control is invalid.
Step S13: when the requirement of the user on the unit is set to be started, the control chip controls the unit to operate according to the requirement of the user.
According to the control method provided by the embodiment of the application, whether the internet cloud control is effectively monitored through the control chip in the water heater, when the fact that the internet cloud control is invalid is monitored, the control chip reads the requirement setting of a user on the water heater unit, the control unit is operated according to the requirement setting of the user, and the defect that when the internet cloud control is abnormal, the water heater cannot operate due to lack of control of the internet cloud end, and hot water cannot be prepared is overcome.
In addition, the control method provided by the embodiment of the application is realized by using a control chip carried by the water heater based on internet cloud control, and the realization cost is low.
In the above embodiment, preferably, the setting of the demand of the user on the unit may include: and starting up or shutting down.
In the embodiment of the application, when a user performs startup or shutdown setting on a unit, the setting result of the user is recorded, namely, the setting of starting the unit (hereinafter referred to as startup) or the setting of closing the unit (hereinafter referred to as shutdown).
The user can set the unit to be started or shut down when the internet cloud control is effective, or can set the unit to be started or shut down when the internet cloud control is ineffective.
In the above embodiment, preferably, when the demand of the user on the unit is set to start, the controlling the unit by the control chip to operate according to the demand of the user may include:
the control chip controls the unit to heat water in the water tank.
In the embodiment of the application, when the on/off demand of the unit is set as the on, the control chip controls the unit to heat water in the water tank of the water heater, so that the water heater based on the internet cloud control can continuously produce hot water when the internet cloud control is invalid, and the demand of the user for hot water is met to the maximum extent.
In the foregoing embodiment, preferably, the control chip controls an implementation flowchart of heating water in the water tank by using the control chip as shown in fig. 2, and may include:
step S21: the control chip reads the current running state information of the unit;
the running state of the unit comprises: a heating running state and a standby state; wherein, the heating operation state refers to that the unit is heating water in the water supply tank; the stand-by state means that the unit is on but not running, i.e. not heating the water in the water tank.
Step S22: if the current operation state of the unit is a heating operation state, the control chip controls the unit to heat water in the water tank according to the current operation parameters of the unit;
and if the unit is determined to be in the heating operation state through the read unit state information, continuing to control the unit to heat the water in the water tank according to the current operation parameters of the unit.
Step S23: if the current operation state of the unit is a standby state, the control chip reads a temperature record value of water in the water tank and a temperature value set by a user, and when the temperature record value of the water in the water tank and the temperature value set by the user meet preset heating operation conditions, the control chip controls the unit to heat the water in the water tank.
In the embodiment of the application, when the water heater based on the internet cloud control normally works (namely the internet cloud control is effective), the temperature value of water in the water tank is recorded in real time.
When the internet cloud control is invalid, if the unit is determined to be in a standby state through the read running state information, whether the temperature recorded value of the water in the water tank and the temperature value set by a user meet heating running conditions or not is judged, and when the temperature recorded value of the water in the water tank and the temperature value set by the user meet preset heating running conditions, the unit is controlled again to heat the water in the water tank. And if the temperature recorded value of the water in the water tank and the temperature value set by the user do not meet the preset heating operation condition, the unit keeps the current state, monitors the water temperature in the water tank, and controls the unit to heat the water in the water tank when the temperature recorded value of the water in the water tank and the temperature value set by the user meet the preset heating operation condition.
In the above embodiment, preferably, when the power on/off demand of the unit by the user is set to be power off, the control chip controls the unit to be powered off.
In the above embodiment, preferably, when the temperature for heating the water in the water tank is greater than or equal to the temperature value set by the user, the control chip controls the unit to stop heating.
In the above embodiment, preferably, the step of enabling the recorded temperature value of the water in the water tank and the temperature value set by the user to satisfy the preset heating operation condition may include:
and the difference value between the temperature value set by the user and the temperature record value of the water in the water tank is greater than or equal to a preset value, and the preset value is greater than zero.
Preferably, the preset value is 5 ℃. Namely, when the water temperature in the water tank is lower than the temperature value set by the user by 5 ℃, the temperature recorded value of the water in the water tank and the temperature value set by the user are determined to meet the preset heating operation condition.
In the above embodiment, preferably, when monitoring that the internet cloud control is invalid, an alarm is given to remind a user that the internet cloud control is abnormal, so that the user can operate the water heater according to the own requirement, that is, the requirement setting is performed.
Another implementation flowchart of the control method provided in the embodiment of the present application is shown in fig. 3, and may include:
step S31: the control chip monitors whether the internet cloud control is effective or not; if yes, continuing to execute the step S31, and meanwhile, normally operating the water heater; otherwise, go to step S32;
step S32: the control chip reads the on/off demand setting of the unit from the manual operator by the user; if the power on/off requirement of the user is set as power on, then go to step S33; otherwise, go to step S39;
step S33: the control chip reads the recorded current running state information of the unit from the signal acquisition and transmission chip, and if the unit is in a heating running state, the step S34 is executed; if the unit is in the standby state, executing step S35;
step S34: the control chip controls the unit to heat according to the current operation parameters until the heating condition is stopped; and returns to perform step S31;
step S35: the control chip reads the recorded value of the water temperature in the water tank and the temperature value set by the user and recorded in the memory chip from the signal acquisition and transmission chip;
step S36: judging whether a preset heating operation condition is met or not according to the read recorded value of the water temperature in the water tank and the temperature value set by the user and recorded in the memory chip; if so, go to step S37; otherwise, go to step S38;
step S37: the control chip controls the group to heat the water in the water tank according to the operation parameters in the memory chip, and the step S34 is executed again;
step S38: the control chip keeps the current state of the unit and returns to the step S31;
step S39: the control chip controls the unit to shut down and returns to the step S31;
corresponding to the method embodiment, an embodiment of the present application further provides a control device, where the control device provided in the embodiment of the present application is applied to a control chip in a water heater based on internet cloud control, and a schematic structural diagram of the control device provided in the embodiment of the present application is shown in fig. 4, and may include:
a monitoring module 41, a reading module 42 and a first control module 43; wherein,
the monitoring module 41 is used for monitoring whether the internet cloud control is effective;
in this embodiment, the monitoring module 41 may determine whether the internet cloud control is effective by monitoring whether the communication connection between the water heater and the internet cloud is normal.
The reading module 42 is configured to read a demand setting of the unit by the user when the monitoring module 41 monitors that the internet cloud control is invalid;
preferably, when the monitoring module 41 monitors that the communication connection between the water heater and the internet cloud is disconnected, or the water heater and the internet cloud cannot communicate, it may be determined that the internet cloud control is invalid.
The first control module 43 is configured to control the unit to heat the water in the water tank when the on/off demand of the unit by the user is set to be on.
The embodiment of the application provides a control device, whether effective monitoring is carried out to internet cloud control through the control chip in the water heater, when monitoring that internet cloud control is invalid, control chip reads the demand setting of user to the water heater unit to the control unit sets up the operation according to user's demand, has compensatied when internet cloud control appears unusually, and the water heater can't be operated because of the control that lacks the internet high in the clouds, can not prepare hydrothermal not enough.
In the above embodiment, preferably, the setting of the demand of the user on the unit may include: and starting up or shutting down.
In the embodiment of the application, when a user performs startup or shutdown setting on a unit, the setting result of the user is recorded, namely, the setting of starting the unit (hereinafter referred to as startup) or the setting of closing the unit (hereinafter referred to as shutdown).
The user can set the unit to be started or shut down when the internet cloud control is effective, or can set the unit to be started or shut down when the internet cloud control is ineffective.
In the above embodiment, preferably, the first control module 43 is specifically configured to control the unit to heat the water in the water tank when the demand of the user on the unit is set to be on.
In the embodiment of the application, when the on/off demand of the unit is set as the on, the control chip controls the unit to heat water in the water tank of the water heater, so that the water heater based on the internet cloud control can continuously produce hot water when the internet cloud control is invalid, and the demand of the user for hot water is met to the maximum extent.
In the above embodiment, preferably, a schematic structural diagram of the first control module 43 is shown in fig. 5, and may include:
a reading unit 51, a first control unit 52, and a second control unit 53; wherein,
the reading unit 51 is configured to read current running state information of the unit when the power on/off requirement of the user on the unit is set to be power on;
the running state of the unit comprises: a heating running state and a standby state; wherein, the heating operation state refers to that the unit is heating water in the water supply tank; the stand-by state means that the unit is on but not running, i.e. not heating the water in the water tank.
The first control unit 52 is configured to control the unit to heat water in the water tank according to the current operation parameter of the unit when it is determined that the current operation state of the unit is the heating operation state according to the operation state information;
and if the unit is determined to be in the heating operation state through the read unit state information, continuing to control the unit to heat the water in the water tank according to the current operation parameters of the unit.
The second control unit 53 is configured to read a temperature recorded value of water in the water tank and a temperature value set by a user when it is determined that the current operation state of the unit is the standby state according to the operation state information, and control the unit to heat the water in the water tank when the recorded value of the temperature of the water in the water tank and the temperature value set by the user satisfy a preset heating operation condition.
And if the unit is determined to be in a standby state through the read operation state information, judging whether the temperature value of the water in the water tank and the temperature value set by the user meet the heating operation condition, and controlling the unit to heat the water in the water tank again when the temperature record value of the water in the water tank and the temperature value set by the user meet the preset heating operation condition. And if the temperature recorded value of the water in the water tank and the temperature value set by the user do not meet the preset heating operation condition, the unit keeps the current state, monitors the water temperature in the water tank, and controls the unit to heat the water in the water tank when the temperature recorded value of the water in the water tank and the temperature value set by the user meet the preset heating operation condition.
Further, another schematic structural diagram of the control device provided in the embodiment of the present application is shown in fig. 6, and may further include:
and the second control module 61 is configured to control the unit to be shut down when the demand of the user on the unit is set to be shut down.
Further, another schematic structural diagram of the control device provided in the embodiment of the present application is shown in fig. 7, and may further include:
and the third control module 71 is used for controlling the unit to stop heating when the water temperature in the water tank is greater than or equal to the temperature value set by the user.
On the basis of the embodiment shown in fig. 4, another schematic structural diagram of the control device provided in the embodiment of the present application is shown in fig. 8, and may further include:
and the alarm module 81 is used for giving an alarm when the condition that the internet cloud control is invalid is monitored.
With reminding user internet cloud control unusual, convenience of customers operates the water heater according to the demand of oneself, carries out the demand setting promptly.
In the above embodiment, preferably, the step of enabling the recorded temperature value of the water in the water tank and the temperature value set by the user to satisfy the preset heating operation condition may include:
and the difference value between the temperature value set by the user and the temperature record value of the water in the water tank is greater than or equal to a preset value, and the preset value is greater than zero.
Preferably, the preset value is 5 ℃. Namely, when the water temperature in the water tank is lower than the temperature value set by the user by 5 ℃, the temperature recorded value of the water in the water tank and the temperature value set by the user are determined to meet the preset heating operation condition.
The embodiment of the present application further provides a control chip, which is integrated with the control device provided in any one of the above device embodiments.
The embodiment of the application also provides a water heater based on internet cloud control, which is provided with the control chip.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (17)
1. A control method is applied to a water heater based on Internet cloud control, and the water heater based on Internet cloud control is provided with a control chip, and is characterized by comprising the following steps:
the control chip monitors whether internet cloud control is effective or not;
when the situation that the internet cloud control is invalid is monitored, the control chip reads the requirement setting of a user on the unit;
and the control chip controls the unit to set and operate according to the requirements of users.
2. The method of claim 1, wherein the setting of demand on the crew by the user comprises: and starting up or shutting down.
3. The method according to claim 2, wherein when the demand of the user on the unit is set to start, the controlling the unit to operate according to the demand of the user by the control chip comprises:
the control chip controls the unit to heat water in the water tank.
4. The method of claim 3, wherein the control chip controlling the unit to heat water in the water tank comprises:
the control chip reads the current running state information of the unit;
if the current operation state of the unit is determined to be a heating operation state through the operation state information, the control chip controls the unit to heat water in the water tank according to the current operation parameters of the unit;
and if the current operation state of the unit is determined to be the standby state through the operation state information, the control chip reads a temperature record value of water in the water tank and a temperature value set by a user, and when the temperature record value of the water in the water tank and the temperature value set by the user meet preset heating operation conditions, the control chip controls the unit to heat the water in the water tank.
5. The method of claim 4, wherein the recorded value of the temperature of the water in the water tank and the user-set temperature value satisfying a preset heating operation condition comprises:
and the difference value between the temperature value set by the user and the temperature record value of the water in the water tank is greater than or equal to a preset value, and the preset value is greater than zero.
6. The method according to claim 2, wherein when the demand of the user on the unit is set to shutdown, the control chip controls the unit to shutdown.
7. The method of claim 3, wherein the control chip controls the unit to stop heating when the temperature of the water in the water tank is greater than or equal to a temperature value set by a user.
8. The method of claim 1, further comprising:
and when the situation that the internet cloud control is invalid is monitored, alarming.
9. A control device is applied to a control chip in a water heater based on Internet cloud control, and is characterized by comprising:
the monitoring module is used for monitoring whether the internet cloud control is effective or not;
the reading module is used for reading the demand setting of the user on the unit when the monitoring module monitors that the internet cloud control is invalid;
and the first control module is used for controlling the unit to set and operate according to the user requirements.
10. The apparatus of claim 9, wherein the user demand set for the crew comprises: and starting up or shutting down.
11. The device according to claim 10, wherein the first control module is specifically configured to control the unit to heat the water in the water tank when the demand of the user on the unit is set to start.
12. The apparatus of claim 11, wherein the first control module comprises:
the reading unit is used for reading the current running state information of the unit when the demand of the user on the unit is set as starting;
the first control unit is used for controlling the unit to heat water in the water tank according to the current operation parameters of the unit when the current operation state of the unit is determined to be a heating operation state through the operation state information;
and the second control unit is used for reading a temperature record value of water in the water tank and a temperature value set by a user when the current operation state of the unit is determined to be a standby state through the operation state information, and controlling the unit to heat the water in the water tank when the temperature record value of the water in the water tank and the temperature value set by the user meet preset heating operation conditions.
13. The apparatus of claim 10, wherein the control means further comprises:
and the second control module is used for controlling the unit to be shut down when the demand of the user on the unit is set to be shut down.
14. The apparatus of claim 11, wherein the control means further comprises:
and the third control module is used for controlling the unit to stop heating when the water temperature in the water tank is greater than or equal to the temperature value set by the user.
15. The apparatus of claim 9, further comprising:
and the alarm module is used for giving an alarm when the condition that the cloud control of the Internet is invalid is monitored.
16. A control chip, characterized in that it integrates a control device according to any one of claims 9-15.
17. An internet cloud control-based water heater, characterized by comprising the control chip of claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410310680.7A CN105222354B (en) | 2014-07-01 | 2014-07-01 | Control method and device, control chip and water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410310680.7A CN105222354B (en) | 2014-07-01 | 2014-07-01 | Control method and device, control chip and water heater |
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| CN105222354A true CN105222354A (en) | 2016-01-06 |
| CN105222354B CN105222354B (en) | 2018-07-03 |
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| US6308009B1 (en) * | 1998-06-04 | 2001-10-23 | American Water Heater Company | Electric water heater with electronic control |
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