CN115406119A

CN115406119A - Temperature abnormity processing method and system for water heater, water heater and medium

Info

Publication number: CN115406119A
Application number: CN202211046997.5A
Authority: CN
Inventors: 袁林生; 张锦超; 冉杰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-11-29

Abstract

The present disclosure provides a temperature anomaly processing method, system, water heater and medium for water heater, the temperature anomaly processing method includes: acquiring the measured inlet water temperature of the inlet water temperature sensor before the abnormality as an initial inlet water temperature; calculating a first heat load based on the initial inlet water temperature, the set outlet water temperature, and the water flow; controlling proportional valve current of the gas proportional valve based on the first heat load and heat load functional relation; acquiring the effluent measured temperature of an effluent temperature sensor; when the temperature difference between the measured water outlet temperature and the set water outlet temperature is larger than a first preset value, the current of the proportional valve is adjusted to enable the measured water outlet temperature to reach the set water outlet temperature. This openly can guarantee when temperature sensor is unusual that the water heater still can normally work, and performance and temperature sensor are equivalent before unusual.

Description

Method and system for processing temperature abnormity of water heater, water heater and medium

Technical Field

The disclosure relates to the technical field of water heaters, in particular to a water heater temperature abnormity processing method, a water heater temperature abnormity processing system, a water heater and a medium.

Background

In the water heater, the temperature sensor who is used for detecting out the temperature of water and temperature of intaking is very important, and wherein any one temperature sensor all can cause the shut down trouble when appearing unusually, leads to the unable normal work of water heater, consequently influences user's water experience.

Disclosure of Invention

The technical problem to be solved by the present disclosure is to provide a method and a system for processing temperature abnormality of a water heater, and a medium, in order to overcome the defect that the water heater cannot work normally when an outlet water temperature sensor or an inlet water temperature sensor is abnormal in the prior art.

The technical problem is solved by the following technical scheme:

according to a first aspect of the present disclosure, a method for processing temperature anomaly of a water heater is provided, where the water heater includes an inlet water temperature sensor and an outlet water temperature sensor, and the method includes:

when the water inlet temperature sensor is abnormal, acquiring the previous water inlet measured temperature of the abnormal water inlet temperature sensor as the initial water inlet temperature;

calculating a first heat load based on the initial inlet water temperature, the set outlet water temperature and the water flow;

controlling the proportional valve current of the gas proportional valve based on the first heat load and a preset heat load functional relation; the heat load function relationship is a corresponding relationship between the heat load of the water heater and the current of the proportional valve;

acquiring the effluent measurement temperature of the effluent temperature sensor;

and when the temperature difference between the measured outlet water temperature and the set outlet water temperature is greater than a first preset value, adjusting the current of the proportional valve to enable the measured outlet water temperature to reach the set outlet water temperature.

Preferably, the step of adjusting the current of the proportional valve to make the measured temperature of the outlet water reach the set outlet water temperature further includes:

when the time for keeping the temperature change value of the effluent measured temperature lower than a second preset value reaches a first preset time, acquiring the current proportional valve current of the gas proportional valve;

determining a second thermal load based on the present proportional valve current and the thermal load functional relationship;

calculating a first inlet water calculated temperature based on the second heat load, the outlet water measured temperature, and the water flow;

and updating the first inlet water calculated temperature to a new initial inlet water temperature, and taking the new initial inlet water temperature as the initial inlet water temperature for calculating the first heat load next time.

Preferably, the method for processing the temperature abnormality of the water heater further comprises:

when the outlet water temperature sensor is abnormal, acquiring a first inlet water measurement temperature of the inlet water temperature sensor;

calculating a third heat load based on the first inlet water measured temperature, the set outlet water temperature, and the water flow;

and controlling the proportional valve current based on the third heat load and the heat load functional relation so that the actual outlet water temperature reaches the set outlet water temperature.

Preferably, when the water heater has a zero cold water function, the step of controlling the proportional valve current based on the third thermal load and the thermal load functional relationship to make the actual outlet water temperature reach the set outlet water temperature further comprises:

when the water heater stops heating, starting a circulating pump to control the water outlet of the water heater to flow into a water inlet end;

acquiring a second intake water measurement temperature of the intake water temperature sensor;

when the time length for keeping the temperature variation value of the second intake water measured temperature lower than a third preset value reaches a second preset time length, acquiring a second intake water measured temperature with the maximum temperature value in the second preset time length as a second intake water calculated temperature;

calculating a compensation temperature based on the second inlet water calculated temperature and the set outlet water temperature; wherein the compensation temperature = the set outlet water temperature-the second inlet water calculated temperature;

and compensating the compensation temperature to the set outlet water temperature to obtain a new set outlet water temperature, and taking the new set outlet water temperature as the set outlet water temperature for calculating the third heat load next time.

According to a second aspect of the present disclosure, a temperature anomaly handling system of a water heater is provided, the water heater includes an inlet water temperature sensor and an outlet water temperature sensor, the temperature anomaly handling system of the water heater includes a first acquisition module, a first calculation module, a first control module, a second acquisition module and a regulation module:

the first acquisition module is used for acquiring the intake water measurement temperature of the intake water temperature sensor before the abnormality as the initial intake water temperature when the intake water temperature sensor is abnormal;

the first calculation module is used for calculating a first heat load based on the initial inlet water temperature, the set outlet water temperature and the water flow;

the first control module is used for controlling the proportional valve current of the gas proportional valve based on the first heat load and a preset heat load functional relation; the heat load function relationship is a corresponding relationship between the heat load of the water heater and the current of the proportional valve;

the second acquisition module is used for acquiring the effluent measured temperature of the effluent temperature sensor;

the adjusting module is used for adjusting the current of the proportional valve when the temperature difference between the measured outlet water temperature and the set outlet water temperature is larger than a first preset value, so that the measured outlet water temperature reaches the set outlet water temperature.

Preferably, the temperature anomaly processing system of the water heater further comprises a third obtaining module, a determining module, a second calculating module and a first updating module:

the third obtaining module is used for obtaining the current proportional valve current of the gas proportional valve when the time length for keeping the temperature change value of the effluent measured temperature lower than the second preset value reaches a first preset time length;

the determination module is used for determining a second heat load based on the current proportional valve current and the heat load functional relation;

the second calculation module is used for calculating a first inlet water calculation temperature based on the second heat load, the outlet water measurement temperature and the water flow;

the first updating module is used for updating the first inlet water calculation temperature to a new initial inlet water temperature, and taking the new initial inlet water temperature as the initial inlet water temperature of the first heat load to be calculated next time.

Preferably, the temperature anomaly processing system of the water heater further comprises a fourth obtaining module, a third calculating module and a second control module:

the fourth acquisition module is used for acquiring a first intake water measurement temperature of the intake water temperature sensor when the outlet water temperature sensor is abnormal;

the third calculation module is used for calculating a third heat load based on the first inlet water measured temperature, the set outlet water temperature and the water flow;

the second control module is used for controlling the proportional valve current based on the third heat load and the heat load functional relation so that the actual outlet water temperature reaches the set outlet water temperature.

Preferably, when the water heater has a zero cold water function, the temperature abnormality processing system of the water heater further includes a third control module, a fifth obtaining module, a sixth obtaining module, a fourth calculating module and a second updating module:

the third control module is used for starting the circulating pump to control the outlet water of the water heater to flow into the water inlet end after the water heater stops heating;

the fifth acquisition module is used for acquiring a second intake water measurement temperature of the intake water temperature sensor;

the sixth obtaining module is configured to obtain a second intake water measured temperature with a maximum temperature value in a second preset time period as a second intake water calculated temperature when the time period during which the second intake water measured temperature keeps the temperature change value lower than a third preset value reaches the second preset time period;

the fourth obtaining module is used for calculating a compensation temperature based on the second inlet water calculating temperature and the set outlet water temperature; wherein the compensation temperature = the set outlet water temperature-the second inlet water calculated temperature;

the second updating module is used for compensating the compensation temperature to the set outlet water temperature to obtain a new set outlet water temperature, and the new set outlet water temperature is used as the set outlet water temperature for calculating the third heat load next time.

According to a third aspect of the present disclosure, there is provided a water heater comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the control method of the gas water heater of the present invention when executing the computer program.

According to a fourth aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the temperature anomaly handling method of a water heater of the present disclosure.

The positive progress effect of this disclosure lies in:

when the water inlet temperature sensor is abnormal, calculating the heat load through the water inlet temperature, the set temperature and the water flow of the previous time of the abnormality of the water inlet temperature sensor, finding the corresponding proportional valve current based on the relation between the heat load and the proportional valve current, and adjusting the proportional valve current after heating the hot water to finally enable the water outlet temperature to reach the set temperature; when the water outlet temperature sensor is abnormal, the heat load calculation is carried out through the current inlet temperature, the set temperature and the water flow of the inlet temperature sensor, and then the proportional valve current is controlled to heat hot water according to the heat load, so that when the temperature sensor is abnormal, the water heater can still work normally, and the performance is equivalent to that before the temperature sensor is abnormal.

Drawings

Fig. 1 is a configuration diagram of a water heater provided by the present disclosure.

Fig. 2 is a schematic flow chart of a method for processing a temperature abnormality of a water heater according to embodiment 1 of the present disclosure.

FIG. 3 is a graph of the thermal load of a water heater versus proportional valve current provided by the present disclosure.

Fig. 4 is a schematic flow chart of a method for processing a temperature abnormality of a water heater according to embodiment 2 of the present disclosure.

Fig. 5 is a schematic flow chart of a temperature abnormality processing method for a water heater according to embodiment 3 of the present disclosure.

Fig. 6 is a schematic flow chart of a method for processing a temperature abnormality of a water heater according to embodiment 4 of the present disclosure.

Fig. 7 is a schematic flow chart of a temperature anomaly handling method for a water heater according to embodiment 5 of the present disclosure.

Fig. 8 is a schematic structural diagram of a temperature abnormality processing system of a water heater according to embodiment 6 of the present disclosure.

Fig. 9 is a schematic structural diagram of a temperature abnormality processing system of a water heater according to embodiment 7 of the present disclosure.

Fig. 10 is a schematic structural diagram of a temperature abnormality processing system of a water heater according to embodiment 8 of the present disclosure.

Fig. 11 is a schematic structural diagram of a water heater according to embodiment 9 of the present disclosure.

Detailed Description

The present disclosure is further illustrated by the following examples, but is not thereby limited to the scope of the examples described.

Example 1

The embodiment provides a temperature anomaly processing method for a water heater, which is used for solving the problem that an inlet water temperature sensor of the water heater is abnormal, and as shown in fig. 1, the water heater comprises an inlet water temperature sensor 1, an outlet water temperature sensor 2 and a gas proportional valve 3, wherein the inlet water temperature sensor 1 is used for acquiring the inlet water temperature of the water heater in real time, the outlet water temperature sensor 2 is used for acquiring the outlet water temperature of the water heater in real time, and the gas proportional valve 3 is used for changing the gas quantity.

Referring to fig. 2, the temperature abnormality processing method of the water heater includes the steps of:

s11, when the water inlet temperature sensor is abnormal, acquiring the previous water inlet measured temperature of the water inlet temperature sensor as the initial water inlet temperature.

As an optional implementation manner, after the water heater is started, a water inlet temperature sensor is detected by a professional detection device to judge whether the water inlet temperature sensor is abnormal or not; alternatively, the determination may also be performed by using a detection value of the inlet water temperature sensor, for example, setting a maximum inlet water temperature threshold and a minimum inlet water temperature threshold of the inlet water temperature sensor, and when the detection value of the inlet water temperature sensor is greater than the maximum inlet water temperature threshold or is less than the minimum inlet water temperature threshold, determining that the detection value is abnormal, and further determining that the inlet water temperature sensor is abnormal.

When the water inlet temperature sensor is abnormal, the previous water inlet temperature when the water inlet temperature sensor is abnormal can be used as the initial water inlet temperature. In this embodiment, the initial water inlet temperature may be a value normally detected before the water inlet temperature sensor is abnormal in the current water use process of the water heater, at this time, the water inlet temperature value is not changed much, and in addition, the initial water inlet temperature may also be a water inlet temperature value of the latest normal water use stored in the history of the water heater, and the water inlet temperature value is temporarily used as the water inlet temperature value of the water used by the water heater at this time.

And S12, calculating a first heat load based on the initial inlet water temperature, the set outlet water temperature and the water flow.

The set water outlet temperature can be a temperature set by a user in a self-defined mode, and can also be a required water outlet temperature value automatically calculated by the water heater according to the environment temperature, and the water flow is the water inlet flow and can be detected through a flow sensor arranged at the water inlet end.

As an optional implementation manner, the first thermal load P can be obtained by substituting the initial inlet water temperature, the set outlet water temperature and the water flow into the calculation formula of the thermal load ₁ And = kq (T is-tuo), where k is a constant, q is the inflow water flow, T is the set outflow water temperature, and tuo is the initial inflow water temperature.

And S13, controlling the proportional valve current of the gas proportional valve based on the first heat load and a preset heat load functional relation.

The heat load function relationship is the corresponding relationship between the heat load of the water heater and the current of the proportional valve. In this embodiment, when other conditions, such as water amount and air volume, are not changed, the way of controlling the heat load is to control the gas amount, that is, the opening degree of the gas proportional valve corresponds to the heat load one by one, and the opening degree of the proportional valve is related to the driving current of the proportional valve, so the corresponding relationship between the proportional valve current and the heat load can be measured in advance.

As an alternative embodiment, a graph of the heat load of the water heater corresponding to the proportional valve current is obtained by analyzing the proportional valve current and the heat load of the gas proportional valve, and is shown in FIG. 3.

The unit of the heat load is W, the unit of the proportional valve current is mA, and it can be seen that the heat load increases along with the increase of the proportional valve current, and meanwhile, in the process of increasing the proportional valve current, the variation trend of the heat load gradually becomes smaller, so that when the proportional valve current is heated to a certain degree, the error of the heat load corresponding to the proportional valve current is controlled to be small.

As an alternative embodiment, after the first heat load is calculated, the corresponding proportional valve current is found in the graph of the heat load corresponding to the proportional valve current, so as to control the water heater to heat the hot water according to the first heat load.

And S14, acquiring the effluent measurement temperature of the effluent temperature sensor.

It should be noted that, in this embodiment, it is assumed that the inlet water temperature sensor is abnormal and the outlet water temperature sensor is normal, and if the outlet water temperature sensor is abnormal at the same time, the steps after step S13 are not performed.

And S15, when the temperature difference between the measured water outlet temperature and the set water outlet temperature is larger than a first preset value, adjusting the current of the proportional valve to enable the measured water outlet temperature to reach the set water outlet temperature.

In this embodiment, although the initial inlet water temperature and the actual inlet water temperature do not change too much, a certain error also exists, and further, a large influence may be caused on the actual outlet water temperature, as an optional implementation manner, an actual outlet water temperature value (i.e., an outlet water measurement temperature) is detected by an outlet water temperature sensor, and according to a difference value between a set outlet water temperature and an outlet water measurement temperature, a proportional valve current is slightly adjusted a little by a little, so that the outlet water measurement temperature finally reaches the set outlet water temperature.

As an optional embodiment, the first preset value may be set according to actual requirements, for example, if the first preset value is 2 ℃, the outlet water temperature is set to 45 ℃, and when the outlet water measured temperature is within a range of 45 ℃ to 47 ℃, the current of the proportional valve does not need to be adjusted, that is, the water heater maintains the existing parameters to continue to operate. Assuming that the measured temperature of the effluent is 40 deg.C, the difference between the two is 5 deg.C, which is shown to be 2 deg.C greater than the first preset value, the proportional valve current is controlled to raise the water temperature.

In this embodiment, when the water inlet temperature sensor is abnormal, the water heater can still work normally, the heat load calculation is performed through the water inlet temperature, the set temperature and the water flow rate of the previous time when the water inlet temperature sensor is abnormal, the corresponding proportional valve current is found based on the relationship between the heat load and the proportional valve current, and after the hot water is heated, the proportional valve current is adjusted, so that the water outlet temperature reaches the set temperature finally. The temperature anomaly control method of the water heater provided by the embodiment can obtain the actual outlet water temperature close to the set outlet water temperature under the condition of facing the inlet water temperature anomaly, thereby meeting the water demand of users.

Example 2

The present embodiment provides a temperature abnormality processing method for a water heater, which is a further optimization of embodiment 1, and referring to fig. 4, step S16 is continuously executed after step S15. Specifically, the method comprises the following steps:

s16, when the time length for keeping the temperature change value of the measured outlet water temperature lower than the second preset value reaches a first preset time length, the current of the gas proportional valve is obtained.

In the embodiment, after the outlet water measured temperature reaches the set outlet water temperature and is stable, the current value of the proportional valve (i.e. the current proportional valve current of the gas proportional valve) at the moment is recorded.

As an alternative embodiment, if the second preset value is set to be 2 ℃, and the first preset time is 1 minute, when the temperature change value of the measured water temperature is less than or equal to 2 ℃ at a time period exceeding one minute, it indicates that the measured water temperature is stable. Of course, the present embodiment is not limited to the above parameters, and can be set according to actual requirements.

And S17, determining a second heat load based on the current proportional valve current and the heat load functional relation.

As an alternative, after recording the current proportional valve current, the corresponding thermal load (i.e. the second thermal load) is found on a graph of the thermal load versus the proportional valve current.

And S18, calculating the first inlet water calculation temperature based on the second heat load, the outlet water measurement temperature and the water flow.

According to the calculation formula of the heat load, under the condition that the heat load and the outlet water temperature are known, the calculation formula of the inlet water temperature can be reversely deduced, so that the actual inlet water temperature value is obtained. As an optional implementation manner, the second heat load, the measured outlet water temperature and the water flow are substituted into the calculation formula of the inlet water temperature to obtain the first inlet water calculated temperature

Wherein k is constant, q is inflow, T _{Go out} Measuring the temperature, P, for the effluent ₂ Is the second heat load.

And S19, updating the first inlet water calculation temperature to a new initial inlet water temperature, and taking the new initial inlet water temperature as the initial inlet water temperature for calculating the first heat load next time.

As an optional implementation manner, the user may stop during the process of continuously using water, and when the water heater is turned on again, the first inlet water calculated temperature is used as the detection value (i.e., the initial inlet water temperature) of the inlet water temperature sensor, so that the actual outlet water temperature directly reaches the set outlet water temperature.

In this embodiment, the corresponding proportional valve current is obtained through the water outlet temperature, the corresponding heat load is obtained through the relationship between the proportional valve current and the heat load, and the actual water inlet temperature value is finally obtained through updating, so that when the water heater is started next time, the actual water outlet temperature close to the set water outlet temperature can be obtained more quickly, and the water use experience of a user is improved.

Example 3

The embodiment provides a temperature abnormity processing method of a water heater, which is used for solving the problem that an outlet water temperature sensor of the water heater is abnormal.

Referring to fig. 5, the method for processing the temperature abnormality of the water heater includes the following steps:

s21, when the water outlet temperature sensor is abnormal, acquiring a first water inlet measurement temperature of the water inlet temperature sensor.

As an optional implementation manner, after the water heater is started, the water outlet temperature sensor can be detected by professional detection equipment to judge whether the water outlet temperature sensor is abnormal or not; as another optional embodiment, the determination may also be performed by using a detection value of the outlet water temperature sensor, for example, a maximum outlet water temperature threshold and a minimum outlet water temperature threshold of the outlet water temperature sensor are set, and when the detection value of the outlet water temperature sensor is greater than the maximum outlet water temperature threshold or is smaller than the minimum outlet water temperature threshold, it is considered that the detection value is abnormal, and thus it is considered that the outlet water temperature sensor is abnormal.

It should be noted that, in the present embodiment, it is assumed that the intake water temperature sensor is normal, and the outlet water temperature sensor is abnormal, and if there is an abnormality in the intake water temperature sensor at the same time, the operation is performed according to step S11 in embodiment 1.

In this embodiment, after the inflow water flow rate is stabilized, the detection value of the inflow water temperature sensor is acquired as the first inflow water measurement temperature.

And S22, calculating a third heat load based on the first inlet water measured temperature, the set outlet water temperature and the water flow.

As an optional implementation manner, the third thermal load P can be obtained by substituting the first measured inlet water temperature, the set outlet water temperature and the water flow into the calculation formula of the thermal load ₃ ＝kq(T _{Is provided with} -T _{Side survey} ) Wherein k is constant, q is inflow, T _{Is provided with} To set the outlet water temperature, T _Measuring The temperature is measured for the first inlet water.

And S23, controlling the proportional valve current based on the third heat load and the heat load functional relation to enable the actual outlet water temperature to reach the set outlet water temperature.

As an alternative embodiment, after the third thermal load is calculated, the corresponding proportional valve current is found in the graph of the thermal load corresponding to the proportional valve current, so as to control the water heater to heat the hot water according to the third thermal load. Because the first measured inlet water temperature is the actual inlet water temperature value, the actual outlet water temperature obtained after heating the hot water according to the third heat load is close to the set outlet water temperature.

It should be noted that, when only the inlet water temperature sensor is used, the current outlet water temperature can not be adjusted in a refined manner, and therefore, the heat load can only be controlled by using the heat load function relationship, and the outlet water temperature can be controlled.

In this embodiment, when the outlet water temperature sensor is abnormal, the heat load calculation is performed through the current inlet water temperature, the set temperature and the water flow of the inlet water temperature sensor, and then the proportional valve current is controlled to heat the hot water according to the heat load, and the corresponding function relationship between the heat load and the proportional valve can be obtained through a cycle test in an experiment, so that the obtained heat load function relationship is relatively reliable, and the relatively accurate heat load can be obtained by controlling the proportional valve current. The temperature abnormality control method for the water heater provided by the embodiment can obtain the actual outlet water temperature close to the set outlet water temperature under the condition of abnormal outlet water temperature, so that the water demand of a user is met.

Example 4

The embodiment provides a method for processing temperature abnormality of a water heater, which is further optimized in the embodiment 3, when the water heater has a zero cold water function, heating can be stopped after the water heater finishes working, a circulating pump is started to control outlet water of the water heater to flow into a water inlet end, and the temperature of the outlet water is detected through a water inlet temperature sensor. As shown in fig. 1, the water heater further includes a circulation pump 4, and the circulation pump 4 is used for allowing the outlet water to pass through the water inlet end which is circulated to flow in.

Referring to fig. 6, step S24 is continuously performed after step S23. Specifically, the method comprises the following steps:

and S24, after the water heater stops heating, starting a circulating pump to control the water outlet of the water heater to flow into a water inlet end.

If the water heater has the zero cold water function, when the water heater is used, the heating is turned off, and the circulating pump 4 is controlled to be turned on, so that the outlet water at the moment flows into the water inlet end through circulation.

And S25, acquiring a second inlet water measuring temperature of the inlet water temperature sensor.

For convenience of understanding, the outlet water flowing into the water inlet end is used as second inlet water, and the measured temperature of the second inlet water is equivalent to the temperature value of the outlet water.

And S26, when the time length for keeping the temperature variation value of the second intake water measured temperature lower than the third preset value reaches a second preset time length, acquiring the second intake water measured temperature with the maximum temperature value in the second preset time length as a second intake water calculated temperature.

In this embodiment, when the effluent flows into the water inlet end, the detection value of the water inlet temperature sensor changes according to a parabola which rises first and then falls, and in the process of gradual rise of the water temperature, the change trend of the temperature gradually becomes smaller, so that if the temperature change value of the second water inlet measurement temperature is detected to be not large for the second preset duration, the second water inlet measurement temperature is determined to reach the vertex value at the moment, and the maximum value detected in the second water inlet measurement temperature can be used as the temperature value of the second water inlet, namely the temperature value of the effluent.

And S27, calculating a compensation temperature based on the second inlet water calculated temperature and the set outlet water temperature.

Where compensated temperature = set outlet water temperature-second inlet water calculated temperature.

And S28, compensating the compensation temperature to the set outlet water temperature to obtain a new set outlet water temperature, and taking the new set outlet water temperature as the set outlet water temperature for calculating the third heat load next time.

The set outlet temperature is compensated through the outlet temperature value detected by the inlet temperature sensor, and the new set outlet temperature = set outlet temperature + compensation temperature. As an optional implementation, when the user turns on the water heater again, the heat load is calculated by using the new set outlet water temperature, so that the actual outlet water temperature directly reaches the set outlet water temperature.

In this embodiment, if the water heater has a zero cold water function, the outlet water temperature value can be collected by the inlet water temperature sensor, so that the heat load can be compensated and calibrated, and the water heater is started next time, so that the outlet water temperature of the water heater heated according to the heat load can be closer to the set outlet water temperature, and the water use experience of a user is improved.

Example 5

The present embodiment provides a method for processing temperature abnormality of a water heater, which is obtained by fusing the methods for processing temperature abnormality of water heaters of embodiments 1, 2, 3 and 4.

As shown in fig. 7, in the method for processing abnormal temperature of a water heater in the present embodiment, step S10 is executed first, specifically:

and S10, detecting whether the water inlet temperature sensor is abnormal or not.

When the judgment result of step S10 is yes, steps S11, S12, S13, S14 and S15 are the same as the description of the corresponding steps in embodiment 1, and steps S16, S17, S18 and S19 are the same as the description of the corresponding steps in embodiment 2.

When the judgment result of the step S10 is no, step S20 is executed, specifically:

s20, whether the water temperature sensor is abnormal or not is detected.

When the judgment result of step S20 is yes, steps S21, S22 and S23 are the same as the description of the corresponding steps in embodiment 3, and steps S24, S25, S26, S27 and S28 are the same as the description of the corresponding steps in embodiment 4.

And when the judgment results in the step S10 and the step S20 are both negative, the temperature sensor of the water heater is normal, hot water is heated according to a working mode, and meanwhile, the detection value of the water inlet temperature sensor is prestored to prevent the abnormal situation of the water inlet temperature sensor.

As an optional implementation manner, the present embodiment is not limited to the case where the inlet water temperature sensor or the outlet water temperature sensor is abnormal, and may also be extended to the case where the water heater only uses one of the temperature sensors.

Although not directly shown in fig. 7, a detection step for the outlet water temperature sensor is implicit before the outlet water measured temperature of the outlet water temperature is acquired in step S14.

In this embodiment, when the water inlet sensor or the water outlet sensor of the water heater is abnormal, the water heater can still work normally, and the performance of the water heater is equivalent to that of the water heater before the abnormality of the temperature sensor, so that the use of a user is not influenced, and the water demand of the user is met.

Example 6

The embodiment provides a temperature abnormity processing system of a water heater, which is used for solving the abnormal situation of a water inlet temperature sensor of the water heater, as shown in fig. 1, the water heater comprises a water inlet temperature sensor 1, a water outlet temperature sensor 2 and a gas proportional valve 3, wherein the water inlet temperature sensor 1 is used for acquiring the water inlet temperature of the water heater in real time, the water outlet temperature sensor 2 is used for acquiring the water outlet temperature of the water heater in real time, and the gas proportional valve 3 is used for changing the gas quantity.

Referring to fig. 8, the temperature anomaly handling system of the water heater comprises a first obtaining module 11, a first calculating module 12, a first control module 13, a second obtaining module 14, a regulating module 15, a third obtaining module 16, a determining module 17, a second calculating module 18 and a first updating module 19.

The first obtaining module 11 is configured to obtain, when the water inlet temperature sensor is abnormal, a previous measured water inlet temperature of the abnormal water inlet temperature sensor as an initial water inlet temperature.

As an optional implementation manner, after the water heater is started, a professional detection device is used for detecting the water inlet temperature sensor to judge whether the water inlet temperature sensor is abnormal or not; alternatively, the determination may also be performed by using a detection value of the inlet water temperature sensor, for example, setting a maximum inlet water temperature threshold and a minimum inlet water temperature threshold of the inlet water temperature sensor, and when the detection value of the inlet water temperature sensor is greater than the maximum inlet water temperature threshold or is less than the minimum inlet water temperature threshold, determining that the detection value is abnormal, and further determining that the inlet water temperature sensor is abnormal.

When the water inlet temperature sensor is abnormal, the first obtaining module 11 takes the previous water inlet temperature as the initial water inlet temperature when the water inlet temperature sensor is abnormal. In this embodiment, the initial water inflow temperature may be a value normally detected before the water inflow temperature sensor is abnormal in the current water consumption process of the water heater, at this time, the sensor is just abnormal, the water inflow temperature value at this time is not changed much, in addition, the initial water inflow temperature may also be a water inflow temperature value of the last normal water stored in the history of the water heater, and the first obtaining module 11 temporarily takes the water inflow temperature value as the water inflow temperature value of the water consumption of the water heater at this time.

The first calculation module 12 is configured to calculate a first heat load based on the initial inlet water temperature, the set outlet water temperature, and the water flow.

As an optional implementation manner, the first calculation module 12 substitutes the initial inlet water temperature, the set outlet water temperature and the water flow into the calculation formula of the heat load to obtain the initial inlet water temperature, the set outlet water temperature and the water flowTo a first heat load P ₁ ＝kq(T _{Is provided with} -T _{Beginning of the design} ) Where k is constant, q is inflow, T _{Is provided with} To set the outlet water temperature, T _{Beginning of the design} The initial inlet water temperature.

The first control module 13 is configured to control a proportional valve current of the gas proportional valve based on the first heat load and a predetermined heat load functional relationship.

The unit of the thermal load is W, and the unit of the proportional valve current is mA, it can be seen that the thermal load increases with the increase of the proportional valve current, and meanwhile, in the process of increasing the proportional valve current, the variation trend of the thermal load gradually decreases, so that when the heating is performed to a certain degree, the error of the thermal load corresponding to the first control module 13 by controlling the proportional valve current is not large.

As an alternative embodiment, after the first calculating module 12 calculates the first heat load, the first control module 13 finds the corresponding proportional valve current in the graph of the heat load corresponding to the proportional valve current, so as to control the water heater to heat the hot water according to the first heat load.

The second obtaining module 14 is configured to obtain an effluent measurement temperature of the effluent temperature sensor.

It should be noted that, in this embodiment, it is default that the inlet water temperature sensor is abnormal, and the outlet water temperature sensor is normal, and if the outlet water temperature sensor is abnormal at the same time, the modules behind the first control module 13 are not called.

The adjusting module 15 is configured to adjust the current of the proportional valve when the temperature difference between the measured outlet water temperature and the set outlet water temperature is greater than a first preset value, so that the measured outlet water temperature reaches the set outlet water temperature.

In this embodiment, although the initial inlet water temperature and the actual inlet water temperature do not change too much, a certain error also exists, and further, a large influence may be caused on the actual outlet water temperature, as an optional implementation manner, the second obtaining module 14 detects the actual outlet water temperature value (i.e., the outlet water measurement temperature) through the outlet water temperature sensor, and the adjusting module 15 slightly adjusts the proportional valve current according to the difference between the set outlet water temperature and the outlet water measurement temperature, so as to finally make the outlet water measurement temperature reach the set outlet water temperature.

As an optional embodiment, the first preset value may be set according to actual requirements, for example, if the first preset value is 2 ℃, the outlet water temperature is set to 45 ℃, and when the outlet water measured temperature is within a range of 45 ℃ to 47 ℃, the current of the proportional valve does not need to be adjusted, that is, the water heater maintains the existing parameters to continue to operate. Assuming that the measured temperature of the effluent is 40 ℃ and the difference between the two is 5 ℃, which is shown to be 2 ℃ greater than the first preset value, the regulating module 15 controls the proportional valve current to raise the water temperature.

The third obtaining module 16 is configured to obtain a current of the gas proportional valve when a duration that the temperature change value of the measured effluent temperature is lower than the second preset value reaches the first preset duration.

In the present embodiment, after the measured outlet water temperature reaches the set outlet water temperature and is stable, the third obtaining module 16 records the current value of the proportional valve (i.e. the current proportional valve current of the gas proportional valve) at this time.

As an optional embodiment, if the second preset value is set to be 2 ℃ and the first preset time is 1 minute, when the temperature change value of the measured water temperature is less than or equal to 2 ℃ in a time period exceeding one minute, it indicates that the measured water temperature is stable. Of course, the present embodiment is not limited to the above parameters, and can be set according to actual requirements.

The determination module 17 is configured to determine a second thermal load based on the present proportional valve current and the thermal load functional relationship.

As an alternative, after the third obtaining module 16 records the current proportional valve current, the determining module 17 finds the corresponding thermal load (i.e. the second thermal load) on the graph of the thermal load corresponding to the proportional valve current.

The second calculation module 18 is configured to calculate the first inlet water calculated temperature based on the second heat load, the outlet water measured temperature, and the water flow rate.

According to the calculation formula of the heat load, under the condition that the heat load and the outlet water temperature are known, the second calculation module 18 can reversely deduce the calculation formula of the inlet water temperature, so that the actual inlet water temperature value is obtained. As an optional implementation manner, the second calculating module 18 substitutes the second heat load, the measured outlet water temperature and the water flow into the calculation formula of the inlet water temperature to obtain the first inlet water calculated temperature

The first updating module 19 is configured to update the first intake water calculated temperature to a new initial intake water temperature, and use the new initial intake water temperature as the initial intake water temperature for calculating the first heat load next time.

As an optional implementation manner, when the user stops during the continuous water use process and turns on the water heater again, the first obtaining module 11 uses the first inlet water calculated temperature as the detection value of the inlet water temperature sensor (i.e., the initial inlet water temperature), so that the actual outlet water temperature directly reaches the set outlet water temperature.

In addition, the corresponding proportional valve current is obtained through the water outlet temperature, the corresponding heat load is obtained through the relation between the proportional valve current and the heat load, and the actual water inlet temperature value is finally obtained through updating, so that the actual water outlet temperature close to the set water outlet temperature can be obtained more quickly when the water heater is started next time, and the water using experience of a user is improved.

Example 7

The embodiment provides a temperature abnormity processing system of a water heater, which is used for solving the problem that an outlet water temperature sensor of the water heater is abnormal.

Referring to fig. 9, the temperature anomaly handling system of the water heater includes a fourth obtaining module 21, a third calculating module 22, a second control module 23, a third control module 24, a fifth obtaining module 25, a sixth obtaining module 26, a fourth calculating module 27 and a second updating module 28.

The fourth obtaining module 21 is configured to obtain a first intake water measurement temperature of the intake water temperature sensor when the outlet water temperature sensor is abnormal.

As an optional implementation manner, after the water heater is started, a professional detection device is used for detecting the outlet water temperature sensor to judge whether the outlet water temperature sensor is abnormal or not; as another alternative embodiment, the determination may also be performed by using a detection value of the outlet temperature sensor, for example, setting a maximum outlet temperature threshold and a minimum outlet temperature threshold of the outlet temperature sensor, and when the detection value of the outlet temperature sensor is greater than the maximum outlet temperature threshold or is less than the minimum outlet temperature threshold, it is determined that the detection value is abnormal, and thus it is determined that the outlet temperature sensor is abnormal.

It should be noted that, in the present embodiment, the default is that the inlet water temperature sensor is normal, and the outlet water temperature sensor is abnormal, if there is an abnormality in the inlet water temperature sensor at the same time, the first obtaining module 11 in embodiment 6 is invoked.

In this embodiment, after the inflow water flow rate is stabilized, the fourth obtaining module 21 obtains the detection value of the inflow water temperature sensor as the first inflow water measurement temperature.

The third calculation module 22 is configured to calculate a third heat load based on the first inlet measured temperature, the set outlet temperature, and the water flow rate.

As an alternative embodiment, the third calculating module 22 substitutes the first measured inlet water temperature, the set outlet water temperature and the water flow into the calculation formula of the heat load to obtain the third heat load P ₃ ＝kq(T _{Is provided with} -T _Measuring ) Wherein k is constant, q is inflow, T _{Is provided with} To set the outlet water temperature, T _{Side survey} The temperature is measured for the first inlet water.

The second control module 23 is configured to control the proportional valve current based on the third thermal load and the thermal load functional relationship to cause the actual leaving water temperature to reach the set leaving water temperature.

As an alternative embodiment, after the third calculation module 22 calculates the third heat load, the second control module 23 finds the corresponding proportional valve current in the graph of the heat load corresponding to the proportional valve current, so as to control the water heater to heat the hot water according to the third heat load. Since the first measured inlet water temperature is the actual inlet water temperature value, the actual outlet water temperature obtained after heating the hot water according to the third heat load is close to the set outlet water temperature.

It should be noted that, when only the inlet water temperature sensor is used, the current outlet water temperature can not be adjusted in a refined manner, so that the second control module 23 can only use the heat load function relationship to control the heat load, and further control the outlet water temperature.

When the water heater has a zero cold water function, heating can be stopped after the water heater finishes working, the circulating pump is started to control the water outlet of the water heater to flow into the water inlet end, and the temperature of the outlet water is detected through the water inlet temperature sensor. As shown in fig. 1, the water heater further includes a circulation pump 4, and the circulation pump 4 is used for allowing the outlet water to pass through the water inlet end which is circulated to flow in.

The third control module 24 is used for starting the circulating pump to control the water outlet of the water heater to flow into the water inlet end after the water heater stops heating.

If the water heater has the function of zero cold water, when the water heater is used, the third control module 24 turns off heating and controls the circulating pump 4 to be turned on, so that the outlet water at the moment flows into the water inlet end through circulation.

The fifth acquiring module 25 is configured to acquire a second intake water measured temperature of the intake water temperature sensor.

The sixth obtaining module 26 is configured to obtain the second intake water measured temperature with the largest temperature value in the second preset time period as the second intake water calculated temperature when the time period during which the second intake water measured temperature keeps the temperature variation value lower than the third preset value reaches the second preset time period.

In this embodiment, when the outlet water flows into the water inlet end, the detection value of the inlet water temperature sensor changes according to a parabola that increases first and then decreases, and in the process of gradually increasing the water temperature, the trend of the change of the temperature gradually decreases, so if the second preset duration is continued and the temperature change value of the second inlet water measurement temperature is detected to be small, it is determined that the second inlet water measurement temperature reaches the vertex value at this time, and the sixth acquisition module 26 may use the maximum value detected therein as the temperature value of the second inlet water, that is, the temperature value of the outlet water.

The fourth calculation module 27 is adapted to calculate the compensated temperature based on the second inlet water calculated temperature and the set outlet water temperature.

The second updating module 28 is configured to compensate the compensation temperature to the set outlet water temperature to obtain a new set outlet water temperature, and use the new set outlet water temperature as the set outlet water temperature for calculating the third thermal load next time.

The second update module 28 compensates the set outlet temperature by the outlet temperature value detected by the inlet temperature sensor, and the new set outlet temperature = set outlet temperature + compensation temperature. As an optional implementation, when the user turns on the water heater again, the heat load is calculated by using the new set outlet water temperature, so that the actual outlet water temperature directly reaches the set outlet water temperature.

In this embodiment, when the outlet water temperature sensor is abnormal, the heat load calculation is performed through the current inlet water temperature, the set temperature and the water flow of the inlet water temperature sensor, then the proportional valve current is controlled to heat the hot water according to the heat load, and the corresponding functional relationship between the heat load and the proportional valve can be obtained through the cyclic test in the experiment, so that the obtained heat load functional relationship is ensured to be reliable, and further, the accurate heat load can be obtained by controlling the proportional valve current. The temperature anomaly control method of the water heater provided by the embodiment can obtain the actual outlet water temperature close to the set outlet water temperature under the condition of facing the outlet water temperature anomaly, thereby meeting the water demand of users.

If the water heater has a zero cold water function, the outlet water temperature value can be acquired through the inlet water temperature sensor, then the heat load is compensated and calibrated, and the water heater is started next time, so that the outlet water temperature of the water heater heated according to the heat load can be closer to the set outlet water temperature, and the water use experience of a user is improved.

Example 8

The present embodiment provides a system for processing temperature abnormality of a water heater, which is obtained by combining the systems for processing temperature abnormality of water heaters according to embodiments 6 and 7.

As shown in fig. 10, the temperature abnormality processing system of the water heater includes a first detection module 10, a first obtaining module 11, a first calculation module 12, a first control module 13, a second obtaining module 14, an adjusting module 15, a third obtaining module 16, a determining module 17, a second calculation module 18, a first updating module 19, a second detection module 20, a fourth obtaining module 21, a third calculation module 22, a second control module 23, a third control module 24, a fifth obtaining module 25, a sixth obtaining module 26, a fourth calculation module 27, and a second updating module 28.

The first detection module 10 is used for detecting whether the intake water temperature sensor is abnormal.

When the judgment result of the first detection module 10 is yes, the first obtaining module 11, the first calculating module 12, the first control module 13, the second obtaining module 14, the adjusting module 15, the third obtaining module 16, the determining module 17, the second calculating module 18 and the first updating module 19 are the same as the description of the corresponding modules in the embodiment 6.

When the judgment result of the first detection module 10 is negative, the second detection module 20 is called, specifically:

the second detection module 20 is used for detecting whether the water temperature sensor is abnormal.

When the judgment result of the second detection module 20 is yes, the fourth obtaining module 21, the third calculating module 22, the second control module 23, the third control module 24, the fifth obtaining module 25, the sixth obtaining module 26, the fourth calculating module 27 and the second updating module 28 are the same as the description of the corresponding modules in embodiment 7.

When the judgment results of the first detection module 10 and the second detection module 20 are both negative, it indicates that the temperature sensor of the water heater is normal, and heats the hot water according to the working mode, and meanwhile, prestores the detection value of the inlet water temperature sensor to prevent the inlet water temperature sensor from being abnormal.

It should be noted that, before the second obtaining module 14 obtains the measured outlet water temperature of the outlet water temperature, the second detecting module 20 is implicitly called to detect the outlet water temperature sensor.

In this embodiment, when the water sensor of intaking of water heater or play water sensor were unusual, the water heater still can normally work, and the performance is equivalent before unusual with temperature sensor, does not influence user's use, has satisfied user's water demand.

Example 9

The present embodiment provides a water heater, and fig. 11 is a schematic structural diagram of the water heater provided in the present embodiment, where the water heater includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the method for processing temperature abnormality of the water heater in embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 5 is implemented. The water heater 30 shown in fig. 11 is only an example and should not bring any limitation to the function and the range of use of the embodiment of the present invention. As shown in fig. 11, the water heater 30 may be embodied in the form of a general purpose computing device, which may be a server device, for example. The components of water heater 30 may include, but are not limited to: the at least one processor 31, the at least one memory 32, and a bus 33 connecting the various system components (including the memory 32 and the processor 31).

The bus 33 includes a data bus, an address bus, and a control bus.

The memory 32 may include volatile memory, such as Random Access Memory (RAM) 321 and/or cache memory 322, and may further include Read Only Memory (ROM) 323.

Memory 32 may also include a program tool 325 (or utility tool) having a set (at least one) of program modules 324, such program modules 324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

The processor 31 executes various functional applications and data processing, such as the temperature abnormality processing method of the water heater in embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 5 described above, by running the computer program stored in the memory 32.

The water heater 30 may also communicate with one or more external devices 34. Such communication may be through input/output (I/O) interfaces 35. Also, the model-generated water heater 30 may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 36. As shown in fig. 11, the network adapter 36 communicates with the other modules of the water heater 30 via bus 33. It should be understood that although not shown in FIG. 11, other hardware and/or software modules may be used in conjunction with water heater 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

It should be noted that although several units/modules or sub-units/modules of the water heater are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the invention. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.

Example 10

The present embodiment provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the temperature abnormality processing method for a water heater in embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 5 described above.

More specific examples, among others, that the readable storage medium may employ may include, but are not limited to: a portable disk, a hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.

In a possible implementation manner, the present invention can also be implemented in the form of a program product, which includes program code for causing a terminal device to execute steps of implementing the temperature abnormality processing method for a water heater in embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 5 described above, when the program product runs on the terminal device.

Where program code for carrying out the invention is written in any combination of one or more programming languages, the program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on a remote device or entirely on the remote device.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of this invention, and these changes and modifications are within the scope of this invention.

Claims

1. The temperature abnormity processing method of the water heater is characterized in that the water heater comprises an inlet water temperature sensor and an outlet water temperature sensor, and the temperature abnormity processing method of the water heater comprises the following steps:

when the water inlet temperature sensor is abnormal, acquiring the measured water inlet temperature of the water inlet temperature sensor at the previous time of the abnormality as the initial water inlet temperature;

calculating a first heat load based on the initial inlet water temperature, a set outlet water temperature, and a water flow rate;

acquiring the effluent measured temperature of the effluent temperature sensor;

2. The method for processing the temperature abnormality of the water heater according to claim 1, wherein the step of adjusting the proportional valve current so that the measured outlet water temperature reaches the set outlet water temperature further comprises:

determining a second heat load based on the present proportional valve current and the heat load functional relationship;

3. The temperature abnormality processing method of a water heater according to claim 1, further comprising:

when the water outlet temperature sensor is abnormal, acquiring a first water inlet measurement temperature of the water inlet temperature sensor;

4. The method of claim 3, wherein the step of controlling the proportional valve current based on the third thermal load and the thermal load functional relationship to cause the actual outlet water temperature to reach the set outlet water temperature further comprises, when the water heater has a zero cold water function:

when the time length that the second intake water measured temperature keeps the temperature change value lower than the third preset value reaches a second preset time length, acquiring a second intake water measured temperature with the maximum temperature value in the second preset time length as a second intake water calculated temperature;

5. The utility model provides a temperature anomaly handling system of water heater, its characterized in that, the water heater is including intaking temperature sensor and leaving water temperature sensor, the temperature anomaly handling system of water heater includes that first acquisition module, first calculation module, first control module, second acquire module and adjusting module:

the first acquisition module is used for acquiring the measured inlet water temperature of the inlet water temperature sensor before the abnormality as the initial inlet water temperature when the inlet water temperature sensor is abnormal;

6. The temperature anomaly handling system of a water heater of claim 5, further comprising a third obtaining module, a determining module, a second calculating module, and a first updating module:

7. The temperature anomaly handling system of a water heater of claim 5, further comprising a fourth acquisition module, a third calculation module, and a second control module:

the third calculation module is used for calculating a third heat load based on the first intake water measured temperature, the set outlet water temperature and the water flow;

8. The temperature anomaly handling system of a water heater of claim 7, further comprising a third control module, a fifth acquisition module, a sixth acquisition module, a fourth calculation module, and a second update module when the water heater has a zero cold water function:

the sixth obtaining module is used for obtaining a second intake water measured temperature with the maximum temperature value in a second preset time period as a second intake water calculated temperature when the time period for keeping the second intake water measured temperature at the temperature change value lower than a third preset value reaches the second preset time period;

the fourth obtaining module is used for calculating a compensation temperature based on the second inlet water calculated temperature and the set outlet water temperature; wherein the compensation temperature = the set outlet water temperature-the second inlet water calculated temperature;

9. A water heater comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements a temperature anomaly handling method for a water heater as claimed in any one of claims 1 to 4.

10. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements a temperature anomaly handling method for a water heater as claimed in any one of claims 1-4.