CN114151973A - Anti-freezing method and anti-freezing control device - Google Patents
Anti-freezing method and anti-freezing control device Download PDFInfo
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- CN114151973A CN114151973A CN202111289580.7A CN202111289580A CN114151973A CN 114151973 A CN114151973 A CN 114151973A CN 202111289580 A CN202111289580 A CN 202111289580A CN 114151973 A CN114151973 A CN 114151973A
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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
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- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
The invention relates to an anti-freezing method and an anti-freezing control device, which utilize an ambient temperature detection module to detect the ambient temperature of heat exchange equipment such as a water heater and the like, thereby obtaining an ambient temperature value and transmitting the detection result to a determination module. The determining module controls the starting module to start the corresponding electric heating device according to different environmental temperature values, so that different anti-freezing working modes can be accurately entered, effective anti-freezing can be achieved in a targeted mode, anti-freezing efficiency is high, and energy consumption can be reduced.
Description
Technical Field
The invention relates to the technical field of anti-freezing, in particular to an anti-freezing method and an anti-freezing control device.
Background
In winter, especially in northern areas, the environment temperature is low, external cold air easily enters the inside of the water heater through the smoke outlet and exchanges heat with water in the pipeline to cause the temperature of the pipeline to be reduced, and when the temperature of the water in the pipeline is lower than 0 ℃, the water can be frozen, so that the water cannot normally circulate, and the risk of frost cracking also exists. In order to avoid freezing of the water in the pipeline, anti-freezing measures are required to be taken for the pipeline. The traditional anti-freezing measures have the problem of high energy consumption.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an anti-freezing method, which can prevent water in a pipeline from freezing and has low energy consumption.
The second technical problem to be solved by the present invention is to provide an anti-freezing control device, which can prevent water in a pipeline from freezing and has low energy consumption.
The first technical problem is solved by the following technical scheme:
an anti-freezing method for a water heater provided with at least two electric heating devices, comprising the steps of:
acquiring an environmental temperature value;
determining to enter an anti-freezing working mode according to the environment temperature value, wherein the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode;
when the first anti-freezing working mode is determined to be entered, starting at least part of the electric heating device to heat the pipeline in an intermittent heating mode;
and when the second anti-freezing working mode is determined to be entered, all the electric heating devices are started to heat the pipeline in a continuous heating mode.
Compared with the background technology, the antifreezing method of the invention has the following beneficial effects: 1. different anti-freezing working modes can be pertinently entered according to different environmental temperature values, and water in the pipeline is prevented from freezing hierarchically and efficiently; 2. the electric heating device can be prevented from continuously heating, energy waste is avoided, and energy consumption is saved; 3. the electric heating device can be intermittently started or closed, so that the anti-freezing effect is ensured, and the energy consumption is saved; 4. the electric heating devices can be used alternately, so that the long-time use of a single electric heating device is avoided, and the service life is prolonged; 5. after the electric heating device fails, the electric heating device can be timely reminded of replacement or maintenance, and the electric heating device which does not fail can be timely started to enter a corresponding anti-freezing working mode, so that the water in the pipeline is prevented from freezing.
In one embodiment, the step of activating at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freeze operation mode is determined to be entered comprises the following steps:
acquiring that the environment temperature value is a first preset temperature value;
starting part of the electric heating device, continuously heating for a first preset time period, and then closing the electric heating device;
and turning off the electric heating device for a second preset time period, and then starting part of the electric heating device again, and repeating the steps.
In one embodiment, the step of activating at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freeze operation mode is determined to be entered comprises the following steps:
acquiring that the environment temperature value is at a second preset temperature value, wherein the second preset temperature value is lower than the first preset temperature value;
starting part of the electric heating device, continuously heating for a third preset time period, and then closing the electric heating device, wherein the third preset time period is greater than the first preset time period;
and turning off part of the electric heating devices, starting part of the electric heating devices again after a fourth preset time period, and repeating the steps.
In one embodiment, in the step of starting at least part of the electric heating devices to heat the pipeline in the intermittent heating mode when the first anti-freezing operation mode is determined to be entered, the heating power of at least two electric heating devices is the same.
In one embodiment, the step of activating at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freeze operation mode is determined to be entered comprises the following steps:
the heating power of at least two electric heating devices is different;
acquiring that the environment temperature value is at a third preset temperature value, wherein the third preset temperature value is lower than the first preset temperature value;
starting the electric heating device with relatively high power, continuously heating for a first preset time period, and then closing the electric heating device;
and after the electric heating device is closed for a second preset time period, the electric heating device with relatively large power is started again, and the process is circulated.
In one embodiment, after the step of determining to enter the anti-freeze operation mode according to the ambient temperature value, the method further includes:
acquiring an internal water temperature value of the water tank;
and if the internal water temperature value is greater than or equal to a preset water temperature value, exiting the anti-freezing working mode.
In one embodiment, after the step of determining to enter the anti-freeze operation mode according to the ambient temperature value, the method further includes:
detecting the working states of at least two electric heating devices;
and if the working states of all the electric heating devices are normal, acquiring the accumulated working time of each electric heating device, and selecting the electric heating device with the relatively short accumulated working time to start so as to enter the first anti-freezing working mode.
In one embodiment, in the step of detecting the operating states of at least two of the electric heating devices, the method further comprises:
if the working state of one part of the electric heating device is normal and the working state of the other part of the electric heating device is invalid, starting the electric heating device with the normal working state to enter the first anti-freezing working mode, and sending a first warning signal that the working state of the other part of the electric heating device is invalid; or
And if the working states of all the electric heating devices are invalid, sending out second warning signals that the working states of all the electric heating devices are invalid.
The second technical problem is solved by the following technical solutions:
an anti-freeze control device for a water heater provided with at least two electric heating devices, comprising:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining to enter an anti-freezing working mode according to an environment temperature value, and the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode;
the starting module is used for starting at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freezing working mode is determined to be entered; the starting module is also used for starting all the electric heating devices to heat the pipeline in a continuous heating mode when the second anti-freezing working mode is determined to be entered;
the starting module is electrically connected with the determining module and at least two electric heating devices.
Compared with the background technology, the antifreezing control device of the invention has the following beneficial effects: after the determining module obtains the environmental temperature, the determining module controls the starting module to start the corresponding electric heating device according to different environmental temperature values, so that different anti-freezing working modes can be accurately entered, effective anti-freezing can be achieved in a targeted mode, anti-freezing efficiency is high, and energy consumption can be reduced.
In one embodiment, the anti-freeze control device further includes an ambient temperature detection module for acquiring an ambient temperature value, and the determination module is electrically connected to the ambient temperature detection module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment antifreeze method;
FIG. 2 is a flow chart of an antifreeze method of another embodiment;
FIG. 3 is a flowchart of an antifreeze method of yet another embodiment;
FIG. 4 is a graph illustrating the variation of ambient temperature and line temperature for one embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. In addition, in the description of the present invention, "and/or" means three schemes.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.
In one embodiment, referring to fig. 1, an anti-freezing method is provided, which can be applied to a water heater to prevent the pipeline of the water heater from freezing. Wherein, be equipped with two at least electric heater unit on the water heater to can utilize electric heater unit to heat the pipeline in order to prevent frostbite.
Specifically, the anti-freezing method comprises the following steps:
s100, acquiring an environmental temperature value.
Specifically, an ambient temperature detection module is used for detecting the ambient temperature of heat exchange equipment such as a water heater and the like, so that an ambient temperature value is obtained; meanwhile, the ambient temperature detection module transmits the detected ambient temperature value to the determination module. Especially for heat exchange equipment such as a gas water heater installed outdoors, different anti-freezing working modes can be accurately selected according to different environmental temperature values by acquiring the outdoor environmental temperature value, effective anti-freezing is achieved, and energy consumption is reduced.
The environment temperature detection module can be a temperature sensor, a temperature probe or other existing elements capable of detecting the environment temperature. The determination module may be an existing control element such as a single chip microcomputer (mcu) or a Programmable Logic Controller (PLC).
S200, determining to enter an anti-freezing working mode according to the environmental temperature value, wherein the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode. Therefore, the determining module can accurately enter different anti-freezing working modes according to different environmental temperature values, effective anti-freezing can be achieved in a targeted mode, and energy consumption can be reduced.
S210, when the first anti-freezing working mode is determined to be entered, at least part of the electric heating device is started, and the pipeline is heated in an intermittent heating mode. So, according to ambient temperature value, when confirming the module and confirming the first mode of preventing frostbite of the module determination needs entering, confirm module control start module work to start at least partial electric heater unit and heat the pipeline, utilize at least partial electric heater unit to provide suitable heat to the pipeline, thereby avoid the water in the pipeline to freeze, and then can effectually prevent frostbite. Meanwhile, the pipeline is heated in an intermittent heating mode, and the pipeline is only required to be guaranteed not to be frozen at the ambient temperature value, so that the energy consumption is reduced.
Referring to fig. 1, optionally, in step S210, the method includes: s211, acquiring the environment temperature value as a first preset temperature value. And S212, starting part of the electric heating device, continuously heating for a first preset time period, and then closing the electric heating device. Thus, when the environment temperature detection module detects that the environment temperature value is a first preset temperature value and transmits a detection result to the determination module, the determination module controls the starting module to work, and part of the electric heating devices are started to heat through the starting module, so that the part of the electric heating devices continuously heat the pipeline for a first preset time period, and accordingly corresponding heat is provided for the pipeline, the water temperature in the pipeline is increased, and the water in the pipeline is prevented from freezing; and after part of the electric heating devices continuously heat the pipeline for a first preset time period so that the water temperature in the pipeline is raised to be not frozen, the starting module is utilized to close the part of the electric heating devices, so that the part of the electric heating devices stop heating, the waste of energy caused by continuous heating of the electric heating devices is avoided, and the energy consumption is saved. And S213, turning off the electric heating device for a second preset time period, and then starting part of the electric heating device again, and repeating the steps. Therefore, after part of the electric heating devices are turned off, part of the electric heating devices can be started again by the starting module after a second preset time period, and the phenomenon that the water temperature in the pipeline is frozen due to the fact that the water temperature in the pipeline is lowered again is avoided. Moreover, when the ambient temperature value is the first preset temperature value, the partial electric heating devices are intermittently started and closed, so that the pipelines can be effectively prevented from being frozen, and the energy consumption can be reduced.
Of course, when the ambient temperature detection module detects that the ambient temperature value is greater than the first preset temperature value, the anti-freezing operation mode is not performed and the standby operation mode is maintained.
Wherein, the electric heating device can be a heating wire, a heating rod or other existing elements capable of providing heat for the pipeline. The electrical heating means may be in direct contact with the pipe or coiled on the circumferential side wall of the pipe.
The first preset temperature value may be a specific temperature value or a temperature range. The first preset temperature value can be flexibly set or adjusted according to actual use requirements.
Optionally, the first preset temperature value is T1，-5℃<T1<3℃。
The first preset time period may be a specific time value or a time range. The first preset time period can be flexibly set or adjusted according to actual use requirements.
Alternatively, the first preset time period may be 20min or 25 min.
The second preset time period may be a specific time value or a time range. The second preset time period can be flexibly set or adjusted according to actual use requirements.
Optionally, the second preset time period is 10min or 15 min.
Wherein, part electric heater unit lasts the first predetermined time quantum of heating to the pipeline to provide corresponding heat to the pipeline, can be that part electric heater unit provides the heat of first default to the pipeline, the heat of first default can carry out nimble adjustment according to the requirement of preventing frostbite of reality, only need guarantee when ambient temperature value is first predetermined temperature value, can not freeze in the pipeline.
More specifically, when the ambient temperature detection module detects that the ambient temperature is T1At a temperature of-5 deg.C<T1<And 3 ℃, starting the electric heating device by the starting module, heating for 20min, then closing the electric heating device, starting the electric heating device again after 10min, and circulating the steps to ensure that the pipeline cannot be frozen and save energy consumption.
Referring to fig. 1, optionally, in step S210, the method further includes: s214, acquiring that the environment temperature value is at a second preset temperature value, wherein the second preset temperature value is lower than the first preset temperature value. And S215, starting part of the electric heating devices, continuously heating for a third preset time period, and then closing the electric heating devices, wherein the third preset time period is greater than the first preset time period. Thus, when the environment temperature detection module detects that the environment temperature value is a second preset temperature value lower than the first preset temperature value and transmits a detection result to the determination module, the determination module controls the starting module to work, and part of the electric heating devices are started to heat through the starting module, so that the part of the electric heating devices continuously heat the pipeline for a third preset time period, and accordingly corresponding heat is provided for the pipeline, the water temperature in the pipeline is increased, and the water in the pipeline is prevented from freezing; and after part of the electric heating devices continuously heat the pipeline for a third preset time period so that the water temperature in the pipeline rises to be not frozen, the starting module is utilized to close the part of the electric heating devices, so that the electric heating devices stop heating, the waste of energy caused by continuous heating of the electric heating devices is avoided, and the energy consumption is saved. Meanwhile, the second preset temperature value is lower than the first preset temperature value, so that the continuous heating time of part of the electric heating devices is prolonged, more heat can be provided for the pipeline, the pipeline is guaranteed not to be frozen at the ambient temperature of the second preset temperature value, and the anti-freezing effect is more accurate. And S216, turning off the partial electric heating device for the fourth preset time period, and then turning on the partial electric heating device again, and repeating the steps. Therefore, after part of the electric heating devices are turned off, part of the electric heating devices can be started again by the starting module after a fourth preset time period, and the phenomenon that the water temperature in the pipeline is frozen due to the fact that the water temperature in the pipeline is lowered again is avoided. Moreover, when the ambient temperature value is the second preset temperature value, the partial electric heating devices are intermittently started and closed, so that the pipelines can be effectively prevented from being frozen, and the energy consumption can be reduced.
The second preset temperature value may be a specific temperature value or a temperature range. The second preset temperature value can be flexibly set or adjusted according to actual use requirements.
Optionally, the second preset temperature value is T2，-10℃<T2<-5℃。
The third preset time period may be a specific time value or a time range. The third preset time period can be flexibly set or adjusted according to actual use requirements.
Optionally, the third preset time period may be 20min, 25min or 30min, and it is only required to be longer than the first preset time period.
The fourth preset time period may be a specific time value or a time range. The fourth preset time period can be flexibly set or adjusted according to actual use requirements.
Optionally, the fourth preset time period is 5min or 10 min.
More specifically, when the ambient temperature detection module detects that the ambient temperature is T2Of which-10 ℃ C<T2<And (4) starting the electric heating device by the starting module to heat for 30min, then closing the electric heating device, starting the electric heating device again after 10min, and circulating the steps to ensure that the pipeline cannot be frozen and save energy consumption.
In addition, because the second preset temperature value is lower than the first preset temperature value, in order to avoid icing in the pipeline at a lower temperature, a larger heat quantity needs to be provided for the pipeline, namely the second preset value is larger than the first preset value.
The heat of the second preset value can be flexibly adjusted according to the actual anti-freezing requirement, and the pipeline can be prevented from freezing only by ensuring that the ambient temperature value is the second preset temperature value.
In addition, the specific number of the electric heating devices can be flexibly adjusted or set according to the actual use condition, for example, the number of the electric heating devices can be two, three or more, and only the corresponding anti-freezing requirement is required to be met. When the first anti-freezing working mode is determined to be entered, the number of the specifically started electric heating devices can be flexibly adjusted or set according to the actual use condition, and can be one, two or more, and only the conditions that all the electric heating devices are not started and corresponding heat can be provided according to corresponding ambient temperature so as to avoid the pipeline from being frozen are met.
When the number of the started electric heating devices is consistent with that of the electric heating devices started by the first preset temperature value, the heating duration can be prolonged (namely the third preset time period is greater than the first preset time period) to provide heat of the second preset value for the pipeline, more electric heating devices can be started under the condition that the heating duration is the same, and the requirement that the heat of the second preset value can be provided for the pipeline is met.
Of course, in other embodiments, the heating powers of the electric heating devices may be different, and the electric heating device with the corresponding heating power is started according to different environmental temperatures, so that it is only necessary to provide the corresponding heat according to the corresponding environmental temperatures to avoid freezing the pipeline.
Referring to fig. 1, optionally, when the heating powers of at least two electric heating devices are different, in step S210, the method further includes: s217, acquiring that the environment temperature value is at a third preset temperature value, wherein the third preset temperature value is lower than the first preset temperature value. And S218, starting the electric heating device with relatively large power, continuously heating for a first preset time period, and then turning off the electric heating device. Thus, when the environment temperature detection module detects that the environment temperature value is a third preset temperature value lower than the first preset temperature value and transmits a detection result to the determination module, the determination module controls the starting module to work, the electric heating device with relatively high heating power is started to heat through the starting module, so that the electric heating device with relatively high heating power continuously heats the pipeline for a first preset time period, corresponding heat is provided for the pipeline, the water temperature in the pipeline is increased, and the water in the pipeline is prevented from freezing; and after the electric heating device with relatively high heating power continuously heats the pipeline for a first preset time period so that the water temperature in the pipeline is raised to be not frozen, the electric heating device with relatively high heating power is turned off by the starting module, so that the electric heating device stops heating, the waste of energy caused by continuous heating of the electric heating device is avoided, and the energy consumption is saved. Meanwhile, as the third preset temperature value is lower than the first preset temperature value, in order to avoid freezing of the pipeline, relatively larger heat needs to be provided for the pipeline, the electric heating device with relatively larger heating power is started to provide heat for the pipeline, and the working time of the electric heating device with relatively larger heating power can be shortened.
The third preset temperature value may be a specific temperature value or a temperature range. The third preset temperature value can be flexibly set or adjusted according to actual use requirements. In addition, the third preset temperature value may be equal to the second preset temperature value.
Optionally, the third preset temperature value is T3，-10℃<T3<-5℃。
The difference of specific heating power between the electric heating devices can be set according to actual use conditions, and the condition that the electric heating devices with relatively large starting heating power can provide enough heat for the pipeline after continuously heating for a first preset time period so as to avoid the pipeline freezing is only required to be met.
And S220, when the second anti-freezing working mode is determined, all the electric heating devices are started to heat the pipeline in a continuous heating mode. So, according to ambient temperature value, when confirming the module and confirming that need get into the frostproofing mode of second, confirm module control start module work to start whole electric heater unit and heat the pipeline in succession, thereby avoid the water in the pipeline to freeze, and then can effectually prevent frostbite.
Specifically, in step S230, the method includes: s231, acquiring that the environment temperature value is at a fourth preset temperature value, wherein the fourth preset temperature value is lower than the second preset temperature value and the third preset temperature value. And S232, simultaneously starting all the electric heating devices and continuously working. So, detect the ambient temperature value as the fourth preset temperature value and transmit the testing result to the confirming module when ambient temperature detection module, the confirming module then controls the start module work, starts whole electric heater unit and begins work simultaneously through the start module for whole electric heater unit continuously heats the pipeline, makes the temperature in the pipeline rise, and then avoids the water in the pipeline to freeze.
The fourth preset temperature value may be a specific temperature value or a temperature range. The fourth preset temperature value can be flexibly set or adjusted according to actual use requirements.
In addition, because the fourth preset temperature value is lower than the second preset temperature value and the third preset temperature value, in order to avoid icing in the pipeline at a lower temperature, a larger amount of heat needs to be provided for the pipeline, and the heat of the third preset value can be provided for the pipeline, wherein the third preset value is greater than the second preset value.
Referring to fig. 2, optionally, after step S200, the method further includes: and S310, acquiring the internal water temperature value of the water tank. And S320, if the internal water temperature value is greater than or equal to the preset water temperature value, exiting the anti-freezing working mode. So, after entering the mode of operation that prevents frostbite, utilize water tank temperature detection module to detect the inside temperature value of water tank and transmit the testing result to the determining module, when water tank temperature detection module detects inside temperature value and surpasss preset temperature value, in order to avoid electric heating device's heating to make the inside temperature value of water tank rise too much and cause the start temperature too high and lead to the scald, determining module control starting module work, thereby make electric heating device stop work, withdraw from the mode of operation that prevents frostbite promptly, avoid electric heating device long-time work and the energy waste that leads to, reduce the energy consumption, also can prevent the emergence of incident such as scald that the start temperature too high caused.
Wherein, the water tank temperature detection module can be a temperature sensor, a temperature probe or other existing elements capable of detecting the internal water temperature of the water tank.
The preset water temperature value may be a specific temperature value or a temperature range. The preset water temperature value can be flexibly set or adjusted according to actual use requirements. For example, the preset water temperature may be 60 ℃ or 80 ℃, or may be 60 ℃ to 80 ℃.
Of course, after the anti-freezing working mode is exited, the corresponding anti-freezing working mode can be reselected to enter according to the environmental temperature value.
In addition, if the water tank temperature detection module detects that the water temperature value inside the water tank is smaller than the preset water temperature value, the current anti-freezing working mode (the first anti-freezing working mode or the second anti-freezing working mode) is maintained.
Specifically, when the first anti-freezing working mode is determined to be entered, part of the electric heating devices are started to heat the pipeline, and when the water tank temperature detection module detects that the internal water temperature value of the water tank is greater than or equal to the preset water temperature value, the first anti-freezing working mode is exited, so that the electric heating devices are prevented from being heated for a long time, energy consumption is saved, and safety accidents such as scalding caused by overhigh starting temperature can be prevented.
Specifically, when the second anti-freezing working mode is determined to be entered, the electric heating device is started to heat the pipeline, and when the water tank temperature detection module detects that the internal water temperature value of the water tank is greater than or equal to the preset water temperature value, the second anti-freezing working mode is exited, so that the electric heating device is prevented from heating for a long time, the energy consumption is saved, and the safety accidents such as scalding caused by overhigh starting temperature can be prevented.
Referring to fig. 3, optionally, after step S200, the method further includes: and S410, detecting the working states of at least two electric heating devices. So, through the operating condition who detects each electric heater unit to the frostproofing mode of entering that can be normal also can in time discover the spare part of damage in order to change in time or maintain. And S420, if the working states of all the electric heating devices are normal, acquiring the accumulated working time of each electric heating device, and selecting the electric heating device with the relatively short accumulated working time to start so as to enter a first anti-freezing working mode. Therefore, the accumulated working time of the electric heating device is obtained by the timer, the obtained result is transmitted to the determining module, and the determining module compares the accumulated working time of the electric heating device, so that the electric heating device with the relatively short accumulated working time corresponding to the starting of the starting module enters the first anti-freezing working mode, the electric heating devices can work alternately, the long-time work of the single electric heating device is avoided, and the service life is prolonged.
Specifically, the determining module finds that the accumulated working time of a certain electric heating device is relatively short through comparison, and when the first anti-freezing working mode needs to be entered, the starting module starts the electric heating device to provide heat of a first preset value or heat of a second preset value for the pipeline. Certainly, because the heating powers of the electric heating devices may be different, in order to provide sufficient heat to the pipeline, in the actual use process, the specific heating time can be flexibly adjusted, and it is only necessary to meet the requirement that the sufficient heat can be provided to the pipeline under the condition of corresponding ambient temperature value so as to avoid the pipeline from being frozen.
The working state of the electric heating device can be judged whether to be normal or not by detecting parameters such as voltage, current or resistance of the electric heating device. The timer may be an existing element that can accumulate the operating time and transmit the recorded data to the determination module.
Referring to fig. 3, in an embodiment, in step S410, the method further includes: s411a, if the operation state of one part of the electric heating devices is normal and the operation state of the other part of the electric heating devices is failed, starting the electric heating device with the normal operation state to enter the first anti-freezing operation mode, and sending a first warning signal indicating that the operation state of the other part of the electric heating devices is failed. Therefore, when the first anti-freezing working mode is confirmed to be entered, the normally working electric heating device can be started to enter the first anti-freezing working mode, and anti-freezing measures can be taken in time to avoid freezing in the pipeline. Meanwhile, the determining module controls the first warning module to send out a first warning signal to remind the user of replacing or maintaining the failed electric heating device in time. The first warning signal may be an error code, a sound warning signal, or a photoelectric warning signal.
Referring to fig. 3, in an embodiment, in step S410, the method further includes: s411b, if the working states of all the electric heating devices are invalid, sending out a second warning signal that the working states of all the electric heating devices are invalid. Therefore, when the first anti-freezing working mode or the second anti-freezing working mode needs to be entered, the determining module controls the second warning module to send out a second warning signal to remind that the electric heating device is replaced or maintained in time. The second warning signal may be an error code, a sound warning signal, or a photoelectric warning signal.
Specifically, after the working states of the electric heating devices are all failed; if the situation that the water tank needs to enter the anti-freezing working mode is determined according to the environmental temperature value, a customer can be reminded to replace the electric heating device through the second warning signal, and the pressure release valve on the water outlet nozzle and the water in the water tank are timely removed to prevent the water tank from being frozen and cracked; and if the user does not need to enter the anti-freezing working mode according to the environmental temperature value, the user can be reminded to replace the electric heating device in time through the second warning signal.
Referring to fig. 4, when the ambient temperature value changes, the temperature of the water inlet pipeline and the temperature of the water outlet pipeline change correspondingly by entering different anti-freezing operation modes and using at least two electric heating devices, so as to prevent the water inlet pipeline and the water outlet pipeline from freezing. And when the water temperature value in the water tank is greater than or equal to the preset water temperature value, the anti-freezing working mode is exited. For example, when the ambient temperature value decreases, the temperature of the water inlet pipeline and the temperature of the water outlet pipeline correspondingly increase, so that the water inlet pipeline and the water outlet pipeline are prevented from freezing.
The anti-freezing method of the embodiment has at least the following advantages: 1. different anti-freezing working modes can be pertinently entered according to different environmental temperature values, and water in the pipeline is prevented from freezing hierarchically and efficiently; 2. the electric heating device can be prevented from continuously heating, energy waste is avoided, and energy consumption is saved; 3. the electric heating device can be intermittently started or closed, so that the anti-freezing effect is ensured, and the energy consumption is saved; 4. the electric heating devices can be used alternately, so that the long-time use of a single electric heating device is avoided, and the service life is prolonged; 5. after the electric heating device fails, the electric heating device can be timely reminded of replacement or maintenance, and the electric heating device which does not fail can be timely started to enter a corresponding anti-freezing working mode, so that the water in the pipeline is prevented from freezing.
In one embodiment, an anti-freezing control device is also provided and can be applied to a water heater so as to prevent a pipeline of the water heater from freezing. Wherein, be equipped with two at least electric heater unit on the water heater to can utilize electric heater unit to heat the pipeline in order to prevent frostbite.
Specifically, the anti-freezing control device comprises a determining module and a starting module. In addition, the determining module is used for determining to enter an anti-freezing working mode according to the environmental temperature value, wherein the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode; the starting module is used for starting at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freezing working mode is determined to be entered; the starting module is also used for starting all the electric heating devices to heat the pipeline in a continuous heating mode when the second anti-freezing working mode is determined to be entered; the first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value; the starting module is electrically connected with the determining module and at least two electric heating devices.
According to the anti-freezing control device of the embodiment, after the determining module obtains the ambient temperature, the determining module controls the starting module to start the corresponding electric heating device according to different ambient temperature values, so that different anti-freezing working modes can be accurately entered, effective anti-freezing can be achieved in a targeted manner, the anti-freezing efficiency is high, and the energy consumption can be reduced.
It should be noted that all or part of the modules in the anti-freeze control device can be implemented by software, hardware and their combination. The modules of the above embodiments may be embedded in hardware or independent from a processor in a computer device, or may be stored in a memory in the computer device in software, so that the processor calls and executes the above modules to perform the corresponding operations.
The electric connection mode can be realized through a wired connection mode such as a data line and the like, and can also be realized through a wireless connection mode such as Bluetooth transmission and the like.
Furthermore, the anti-freezing control device further comprises an ambient temperature detection module for acquiring an ambient temperature value, and the determination module is electrically connected with the ambient temperature detection module. Therefore, the environment temperature detection module is used for acquiring the environment temperature value and transmitting the detection result to the determination module, so that the determination module can conveniently enter a corresponding anti-freezing working mode.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An anti-freezing method for a water heater, characterized in that it is provided with at least two electric heating devices, comprising the following steps:
acquiring an environmental temperature value;
determining to enter an anti-freezing working mode according to the environment temperature value, wherein the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode;
when the first anti-freezing working mode is determined to be entered, starting at least part of the electric heating device to heat the pipeline in an intermittent heating mode;
and when the second anti-freezing working mode is determined to be entered, all the electric heating devices are started to heat the pipeline in a continuous heating mode.
2. The antifreeze method as set forth in claim 1, wherein said step of activating at least a part of said electric heating means to heat the pipeline in an intermittent heating manner when it is determined that the first antifreeze operation mode is entered comprises:
acquiring that the environment temperature value is a first preset temperature value;
starting part of the electric heating device, continuously heating for a first preset time period, and then closing the electric heating device;
and turning off the electric heating device for a second preset time period, and then starting part of the electric heating device again, and repeating the steps.
3. The antifreeze method as set forth in claim 2, wherein said step of activating at least a part of said electric heating means to heat the pipeline in an intermittent heating manner when it is determined that the first antifreeze operation mode is entered comprises:
acquiring that the environment temperature value is at a second preset temperature value, wherein the second preset temperature value is lower than the first preset temperature value;
starting part of the electric heating device, continuously heating for a third preset time period, and then closing the electric heating device, wherein the third preset time period is greater than the first preset time period;
and turning off part of the electric heating devices, starting part of the electric heating devices again after a fourth preset time period, and repeating the steps.
4. The antifreeze method according to claim 3, wherein in the step of heating the pipeline in the intermittent heating mode by activating at least a part of said electric heating means when it is determined that the first antifreeze operation mode is entered, the heating powers of at least two electric heating means are the same.
5. The antifreeze method as set forth in claim 2, wherein said step of activating at least a part of said electric heating means to heat the pipeline in an intermittent heating manner when it is determined that the first antifreeze operation mode is entered comprises:
the heating power of at least two electric heating devices is different;
acquiring that the environment temperature value is at a third preset temperature value, wherein the third preset temperature value is lower than the first preset temperature value;
starting the electric heating device with relatively high power, continuously heating for a first preset time period, and then closing the electric heating device;
and after the electric heating device is closed for a second preset time period, the electric heating device with relatively large power is started again, and the process is circulated.
6. The antifreeze method according to any one of claims 1 to 5, further comprising, after the step of determining entry into an antifreeze operating mode based on the ambient temperature value:
acquiring an internal water temperature value of the water tank;
and if the internal water temperature value is greater than or equal to a preset water temperature value, exiting the anti-freezing working mode.
7. The antifreeze method according to any one of claims 1 to 5, further comprising, after the step of determining entry into an antifreeze operating mode based on the ambient temperature value:
detecting the working states of at least two electric heating devices;
and if the working states of all the electric heating devices are normal, acquiring the accumulated working time of each electric heating device, and selecting the electric heating device with the relatively short accumulated working time to start so as to enter the first anti-freezing working mode.
8. The antifreeze method according to claim 7, further comprising, in the step of detecting an operating state of at least two of said electric heating apparatuses:
if the working state of one part of the electric heating device is normal and the working state of the other part of the electric heating device is invalid, starting the electric heating device with the normal working state to enter the first anti-freezing working mode, and sending a first warning signal that the working state of the other part of the electric heating device is invalid; or
And if the working states of all the electric heating devices are invalid, sending out second warning signals that the working states of all the electric heating devices are invalid.
9. An anti-freezing control device for a water heater provided with at least two electric heating devices, comprising:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining to enter an anti-freezing working mode according to an environment temperature value, and the anti-freezing working mode comprises a first anti-freezing working mode or a second anti-freezing working mode;
the starting module is used for starting at least part of the electric heating device to heat the pipeline in an intermittent heating mode when the first anti-freezing working mode is determined to be entered; the starting module is also used for starting all the electric heating devices to heat the pipeline in a continuous heating mode when the second anti-freezing working mode is determined to be entered;
the starting module is electrically connected with the determining module and at least two electric heating devices.
10. The antifreeze control apparatus of claim 9, further comprising an ambient temperature detection module for obtaining an ambient temperature value, wherein the determination module is electrically connected to the ambient temperature detection module.
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