阅读说明：本技术 一种太阳能热水器的控制方法及太阳能热水器 (Control method of solar water heater and solar water heater ) 是由 刘玉磊 张保国 王森 费家哲 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种太阳能热水器的控制方法及太阳能热水器,其属于热水器技术领域,太阳能热水器的控制方法包括：累计无用水时长,若所述无用水时长达到第一预设时长,则根据水箱内的当前水温和外界的环境温度选择除菌模式,包括：若当前水温大于或者等于水温设定值且环境温度大于或者等于第一环境设定值,则控制热水器执行热水循环模式；否则,控制热水器执行冷水置换模式。太阳能热水器采用上述的太阳能热水器的控制方法进行控制。通过除菌模式的选择,在节省能源的同时能够避免细菌滋生。(The invention discloses a control method of a solar water heater and the solar water heater, belonging to the technical field of water heaters, wherein the control method of the solar water heater comprises the following steps: accumulating the useless water time, and if the useless water time reaches a first preset time, selecting a sterilization mode according to the current water temperature in the water tank and the external environment temperature, wherein the sterilization mode comprises the following steps: if the current water temperature is greater than or equal to the water temperature set value and the environment temperature is greater than or equal to the first environment set value, controlling the water heater to execute a hot water circulation mode; otherwise, controlling the water heater to execute a cold water replacement mode. The solar water heater is controlled by adopting the control method of the solar water heater. Through the selection of the sterilization mode, the energy can be saved and the bacterial breeding can be avoided.)

1. A control method of a solar water heater is characterized in that the time of idle water is accumulated, if the time of idle water reaches a first preset time, a sterilization mode is selected according to the current water temperature in a water tank and the external environment temperature, and the method comprises the following steps:

if the current water temperature is greater than or equal to the water temperature set value and the environment temperature is greater than or equal to the first environment set value, controlling the water heater to execute a hot water circulation mode;

otherwise, controlling the water heater to execute a cold water replacement mode.

2. The control method of the solar water heater according to claim 1, wherein in the hot water circulation mode, if the current water temperature is less than a first preset temperature value, the electric heating device is controlled to heat the water in the water tank until the current water temperature is greater than or equal to the first preset temperature value;

if the current water temperature is greater than or equal to a first preset temperature value, controlling a water pump to circulate water in the water heater for a first set time;

wherein, the first preset temperature value is larger than the set water temperature value.

3. The control method of the solar water heater according to claim 1, wherein in the cold water replacement mode, if the current water temperature is greater than a second preset temperature value, the sun-shading part is controlled to shade the water heater until the current water temperature is less than or equal to the second preset temperature value;

if the current water temperature is less than or equal to a second preset temperature value, controlling the drainage outlet to be opened for drainage;

wherein the second preset temperature value is smaller than the set water temperature value.

4. The method of claim 3, wherein the water supply assembly is controlled to supply fresh cold water to the water heater if the ambient temperature is greater than or equal to a second ambient setting value after the draining is completed, wherein the second ambient setting value is less than the first ambient setting value.

5. The control method of a solar water heater according to claim 4, wherein after the draining is completed, if the ambient temperature is less than the second ambient setting value, the water supply assembly is controlled to supply fresh cold water to the water heater, and the electric heating device is controlled to start heating the water in the water tank.

6. The control method of a solar water heater according to claim 1, wherein after the degerming mode is performed once, the useless water time period is accumulated again, and if the accumulated useless water time period reaches a second preset time period, the degerming mode is selected again according to the current water temperature in the water tank and the external ambient temperature.

7. The control method of a solar water heater according to claim 6, wherein the second preset time period is shorter than the first preset time period.

8. The control method of a solar water heater according to claim 6, wherein the cold water replacement mode is performed after the hot water circulation mode is continuously performed a set number of times.

9. The control method of the solar water heater according to any one of claims 1 to 8, wherein the current water temperature in the water tank and the external environment temperature are monitored in real time, and if the current water temperature is greater than or equal to the first early warning temperature value and the environment temperature is greater than or equal to the first environment set value, the water heater is controlled to execute a cooling protection mode.

10. A solar water heater characterized by being controlled by the control method of the solar water heater according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of water heaters, in particular to a control method of a solar water heater and the solar water heater.

Background

The solar water heater converts solar energy into heat energy, heats water from low temperature to high temperature, and meets the requirement of hot water in life and production. The solar water heater is divided into a vacuum tube type solar water heater and a flat plate type solar water heater according to the structural form. At present, vacuum tube type solar water heaters are mainly used in the market, and mainly comprise heat collecting tubes, water storage tanks, brackets and other related accessories, and solar energy is converted into heat energy mainly by the heat collecting tubes. The heat collecting pipe makes use of the principle that hot water floats upwards and cold water sinks to enable water to generate microcirculation to achieve the required hot water, and the hot water is stored in a water storage tank which is used for supplying water to users.

When water in the solar water heater is not used for a long time, the oxygen content in the water is reduced, the water quality is poor, bacteria, microorganisms and the like are easy to grow, and when the hot water is reused, symptoms such as skin itch and red spots are easy to generate, so that the health of a user is influenced.

Disclosure of Invention

The invention aims to provide a control method of a solar water heater and the solar water heater, and aims to solve the technical problem that bacteria are easy to breed when water in the solar water heater is not used for a long time in the prior art.

As the conception, the technical scheme adopted by the invention is as follows:

a control method of a solar water heater accumulates useless water time, if the useless water time reaches a first preset time, a sterilization mode is selected according to the current water temperature in a water tank and the external environment temperature, and the method comprises the following steps:

if the current water temperature is greater than or equal to the water temperature set value and the environment temperature is greater than or equal to the first environment set value, controlling the water heater to execute a hot water circulation mode;

otherwise, controlling the water heater to execute a cold water replacement mode.

In the hot water circulation mode, if the current water temperature is lower than a first preset temperature value, controlling the electric heating device to heat the water in the water tank until the current water temperature is higher than or equal to the first preset temperature value;

if the current water temperature is greater than or equal to a first preset temperature value, controlling a water pump to circulate water in the water heater for a first set time;

wherein, the first preset temperature value is larger than the set water temperature value.

In the cold water replacement mode, if the current water temperature is higher than a second preset temperature value, the sun-shading component is controlled to shade the water heater until the current water temperature is lower than or equal to the second preset temperature value;

if the current water temperature is less than or equal to a second preset temperature value, controlling the drainage outlet to be opened for drainage;

wherein the second preset temperature value is smaller than the set water temperature value.

After the water drainage is finished, if the environmental temperature is greater than or equal to a second environmental set value, the water supply assembly is controlled to supplement fresh cold water to the water heater, wherein the second environmental set value is smaller than the first environmental set value.

After the water is drained, if the environment temperature is lower than a second environment set value, the water supply assembly is controlled to supply fresh cold water to the water heater, and meanwhile the electric heating device is controlled to start heating water in the water tank.

After the sterilization mode is executed for one time, the useless water time length is accumulated again, and if the accumulated useless water time length reaches a second preset time length, the sterilization mode is selected again according to the current water temperature in the water tank and the external environment temperature.

And the second preset time length is less than the first preset time length.

Wherein, after the hot water circulation mode of the set times is continuously executed, the cold water replacement mode is executed.

The water heater control method comprises the steps of monitoring the current water temperature in the water tank and the external environment temperature in real time, and controlling the water heater to execute a cooling protection mode if the current water temperature is larger than or equal to a first early warning temperature value and the environment temperature is larger than or equal to a first environment set value.

The solar water heater is controlled by adopting the control method of the solar water heater.

The invention has the beneficial effects that:

the invention provides a control method of a solar water heater, which comprises the following steps: accumulating the useless water time, if the useless water time reaches the preset time, selecting a sterilization mode according to the current water temperature in the water tank and the external environment temperature: if the current water temperature is greater than or equal to the water temperature set value and the environment temperature is greater than or equal to the first environment set value, the current water temperature is better and the environment temperature is higher, the water heater is controlled to execute a hot water circulation mode at the moment, energy is saved relatively, and the functions of sterilization and bacteriostasis are achieved through high-temperature hot water; otherwise, the water heater is controlled to execute a cold water replacement mode, so that water in the water heater is replaced by fresh cold water, and bacteria breeding can be avoided.

The solar water heater provided by the invention is controlled by adopting the control method of the solar water heater, so that the water quality in the water heater is ensured to be better, and the breeding of bacteria is avoided.

Drawings

Fig. 1 is a first flowchart of a control method of a solar water heater according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a solar water heater according to an embodiment of the present invention entering a high temperature mode;

fig. 3 is a flowchart illustrating a solar water heater entering a low temperature mode according to an embodiment of the present invention;

fig. 4 is a second flowchart of a control method of a solar water heater according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a hot water circulation mode performed by the solar water heater according to the embodiment of the present invention;

fig. 6 is a flowchart illustrating a cold water replacement mode performed by the solar water heater according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The technical solution of the present invention is further explained by the following embodiments.

The embodiment of the invention provides a solar water heater which comprises a heat collecting component and a water tank. The heat collecting component is a vacuum tube and can convert solar energy into heat energy. The heat collecting pipe utilizes the principle that hot water floats upwards and cold water sinks to enable water to generate microcirculation and achieve the required hot water.

The water tank is a water storage part, a water inlet and a water outlet are formed in the water tank, the water inlet is connected with a cold water source and used for supplying water into the water tank, and the water outlet is connected with a water using end of a user and used for supplying water to the user.

The solar water heater also comprises a water pump, the water tank is connected with the heat collecting component, the water tank is also provided with a circulating inlet and a circulating outlet, the circulating inlet and the circulating outlet are both communicated with the heat collecting component, and the water pump is connected with the water tank. When the water pump is started, water circulation can be formed between the water tank and the heat collecting component.

The solar water heater further comprises a sunshade member movable between a first position and a second position. When the solar water heater is at the first position, the sun-shading component is far away from the water heater, and the solar energy absorption of a heat collection component of the water heater is not influenced; when the water heater is in the second position, the sunshade component shields the water heater and cools a heat collection component of the water heater.

The sunshade component is provided with a refrigerating device, and the refrigerating device can blow cold air to the heat collection component.

The solar water heater also comprises a water supply assembly, and cold water can be supplemented into the water tank when the water supply assembly is opened. The water supply assembly may be a pump or a valve, but is not limited thereto.

The solar water heater also comprises an electric heating device which can heat the water in the water tank. When the temperature is low in continuous rainy days or the environment temperature, the solar energy is not enough to heat to the set temperature, the electric heating device can be started to heat.

The solar water heater also comprises a solar battery, the solar battery stores electric quantity when the sunlight is sufficient, and the solar battery can supply power to the refrigerating device and the electric heating device when in need.

The embodiment of the invention also provides a control method of the solar water heater, which is used for controlling the solar water heater.

When the user normally uses water, the water in the water tank flows out from the water outlet, and whether the user uses the water in the water heater can be determined by monitoring the water flow at the water outlet of the water tank. The water flow may be detected by a flow sensor. If the water flow is 0, it means that the user has no water.

Referring to fig. 1, in the using process of the water heater, the useless water duration is accumulated, and the current water temperature in the water tank and the external environment temperature are monitored and obtained in real time.

If the current water temperature is greater than or equal to the first early warning temperature value, judging that the water heater enters a high-temperature mode; if the current water temperature is lower than the second early warning temperature value, judging that the water heater enters a low temperature mode; if the current water temperature is greater than or equal to the second early warning temperature value and less than the first early warning temperature value, the time length of the water without use can be continuously accumulated at the moment.

If the water-free time reaches the first preset time, the user is indicated to have no water for a long time, at the moment, the sterilization operation needs to be carried out, and the water heater executes the sterilization mode. The first preset time period may be 5 to 7 days, which is not limited herein.

Referring to fig. 2, in the high temperature mode, the water temperature is high, the situation that water is evaporated to dryness may exist, the service life of the water heater is also affected by the high temperature for a long time, and at this time, the sun-shading component is controlled to shade the water heater.

Under the condition that the water heater is shielded by the sun-shading component, if the ambient temperature is lower than the first ambient set value, the ambient temperature is not high, the water heater cannot be heated continuously, and at the moment, the water heater can be prevented from being heated continuously only by continuously opening the sun-shading component. Under the condition that the water heater is shielded by the sun-shading component, the current water temperature still needs to be monitored, and if the current water temperature is smaller than a first preset temperature value, the sun-shading component is controlled to be far away from the water heater. The first preset temperature value is smaller than the first early warning temperature value.

In the high-temperature mode, if the ambient temperature is greater than or equal to the first ambient set value, the ambient temperature is high, the possibility of continuous heating of the water heater exists, and at the moment, the water heater is controlled to execute a cooling protection mode to blow cold air to the water heater. And in the cooling protection mode, the refrigerating device arranged on the sun-shading part blows cold air to the heat collection part for a second set time.

After the cooling protection mode is executed, the current water temperature still needs to be monitored, and if the current water temperature is smaller than a first preset temperature value, the sun-shading component is controlled to be far away from the water heater. And if the current water temperature is greater than or equal to the first preset temperature value, controlling the water heater to execute a drainage protection mode, supplementing cold water into the water heater and draining water in the water heater.

In the drainage protection mode, the water supply assembly is opened to supply cold water to the water heater, the cold water is mixed with hot water in the water heater to reduce the temperature of the water in the water heater, and meanwhile, the drainage port is opened to discharge the hot water with higher temperature to prevent overhigh pressure in the water tank.

In the high-temperature mode, if the useless water time reaches a first preset time, the sterilization mode is selected according to the current water temperature in the water tank and the external environment temperature.

Referring to fig. 3, in the low temperature mode, the water temperature is low, there may be a case of freezing, and the long-term low temperature may cause the components of the water heater to be frost-cracked, at which time the electric heating device is controlled to heat the water in the water heater.

And monitoring the current water temperature while the electric heating device is started, and controlling the electric heating device to be closed if the current water temperature is greater than or equal to a set water temperature value.

And under the condition that the electric heating device is started, if the environment temperature is greater than or equal to the second environment set value and indicates that the water heater cannot be frozen, continuing electric heating and monitoring the current water temperature until the current water temperature is greater than or equal to the water temperature set value, and controlling the electric heating device to be closed.

Under the condition that the electric heating device is started, if the environment temperature is lower than the second environment set value, the environment temperature is low, the risk of icing exists, more energy can be wasted only through electric heating, and at the moment, the electric heating device can be turned off and water in the water heater can be discharged.

In the low-temperature mode, if the accumulated water-free time reaches a first preset time, the sterilization mode is selected according to the current water temperature in the water tank and the external environment temperature.

Referring to fig. 4, if the idle water duration reaches a first preset duration, a sterilization mode is selected according to the current water temperature in the water tank and the external environment temperature to prevent bacteria in water from breeding.

The sterilization mode has two modes, namely a hot water circulation mode and a cold water replacement mode. Under the hot water circulation mode, the water pump drives water in the water heater to circulate in the heat collecting component and the water tank, and the high-temperature hot water achieves the functions of sterilization and bacteriostasis. In the cold water replacement mode, the water outlet is opened to discharge water in the water heater, and after the water discharge is finished, the water supply assembly is opened to inject fresh cold water into the water heater.

Specifically, if the current water temperature is greater than or equal to the water temperature set value and the environment temperature is greater than or equal to the first environment set value, the current water temperature is better and the environment temperature is higher, the water heater is controlled to execute a hot water circulation mode at the moment, energy is saved, and the functions of sterilization and bacteriostasis are achieved through high-temperature hot water. Otherwise, the water heater is controlled to execute a cold water replacement mode, and cold water replacement enables water in the water heater to be replaced by fresh cold water, so that bacteria breeding can be avoided.

In the hot water circulation mode, a certain temperature of water needs to be ensured, so that the water may need to be heated, but the water does not need to be discharged; in the cold water replacement mode, no heat is required to the water, but the water is drained and replaced with fresh water. According to the value of water change and the value of electricity required by heating, the set value of the water temperature can be obtained, and the purpose of saving energy is achieved, so that the set value of the water temperature can be a variable. The water temperature setting value is different at different stages of the water heater. Of course, the water temperature setting value can also be a fixed quantity, and the water temperature setting value is obtained comprehensively according to parameters such as the volume of the water tank, the electric charge and the like.

Referring to fig. 5, in the hot water circulation mode, if the current water temperature is less than a first preset temperature value, the electric heating device is controlled to heat the water in the water tank until the current water temperature is greater than or equal to the first preset temperature value; if the current water temperature is greater than or equal to a first preset temperature value, controlling a water pump to circulate water in the water heater for a first set time; wherein, the first preset temperature value is larger than the set water temperature value.

In the hot water circulation mode, the sterilization function can be achieved only by heating the water temperature to a first preset temperature value, namely a higher temperature. If the water temperature is lower than the first preset temperature value, the water can be heated by adopting electric heating so as to carry out water circulation.

Referring to fig. 6, in the cold water replacement mode, if the current water temperature is greater than a second preset temperature value, the sun-shading component is controlled to shade the water heater until the current water temperature is less than or equal to the second preset temperature value; if the current water temperature is less than or equal to a second preset temperature value, controlling the drainage outlet to be opened for drainage; wherein the second preset temperature value is smaller than the set water temperature value.

And in the cold water replacement mode, the water temperature is reduced to a second preset temperature value, namely a lower temperature, and then the water is discharged, so that the water discharge component of the water heater is prevented from being damaged.

After the drainage is completed, the drain port is closed. And if the ambient temperature is greater than or equal to the second ambient set value, controlling the water supply assembly to supplement fresh cold water to the water heater.

After the drainage is completed, the drain port is closed. And if the ambient temperature is lower than the second ambient set value, controlling the water supply assembly to supply fresh cold water to the water heater, and simultaneously controlling the electric heating device to be started to heat the water in the water heater. Avoiding the occurrence of icing.

After the execution of the one-time sterilization mode, the water-free time period is newly accumulated. And if the newly accumulated water-free time reaches a second preset time, selecting the sterilization mode again according to the current water temperature in the water tank and the external environment temperature.

In this embodiment, the second preset duration is less than the first preset duration. Since the useless water time is accumulated all the time and the water quality in the water heater is deteriorated, the water needs to be treated again in a short time.

And after the hot water circulation mode is continuously executed for two times, the useless water time length is accumulated again, and if the accumulated useless water time length reaches a third preset time length, the water heater is controlled to execute the cold water replacement mode.

The method can also be as follows: after the hot water circulation mode is continuously performed a set number of times, the cold water replacement mode is performed.

The sterilization mode is to ensure the water quality in the water heater.

For ease of understanding, the following are illustrated:

the first early warning temperature value is 80 ℃, the first environment set value is 20 ℃, the first preset temperature value is 70 ℃, and the water temperature set value is 50 ℃. The second early warning temperature value is 5 ℃, the second environment set value is 0 ℃, and the second preset temperature value is 40 ℃. The first preset duration is 5 days.

First, high-temperature mode:

if the current water temperature is greater than or equal to 80 ℃, the water heater is judged to enter a high-temperature mode, and the sun-shading part is controlled to shade the water heater at the moment.

And under the condition that the sun-shading component shields the water heater, if the ambient temperature is lower than 20 ℃, continuously monitoring the current water temperature until the current water temperature is lower than 70 ℃, and controlling the sun-shading component to be far away from the water heater.

And under the condition that the water heater is shielded by the sun-shading part, if the ambient temperature is higher than or equal to 20 ℃, controlling a refrigerating device on the sun-shading part to blow cold air to the heat collecting part for a second set time.

After the cold air is blown for a second set time, if the current water temperature is less than 70 ℃, controlling the sun-shading part to be far away from the water heater; and if the current water temperature is higher than and equal to 70 ℃, controlling the water supply assembly to supplement cold water into the water heater and controlling the water in the water heater to be discharged.

Second, low-temperature mode:

and if the current water temperature is less than 5 ℃, judging that the water heater enters a low-temperature mode, controlling the electric heating device to heat the water in the water heater at the moment until the current water temperature is more than or equal to 50 ℃, and controlling the electric heating device to be closed.

Under the condition that the electric heating device heats water in the water heater, if the ambient temperature is greater than or equal to 0 ℃, continuing electric heating and monitoring the current water temperature until the current water temperature is greater than or equal to 50 ℃, and controlling the electric heating device to be closed.

Under the condition that the electric heating device heats water in the water heater, if the ambient temperature is less than 0 ℃, the electric heating device is closed and the water in the water heater is discharged.

Third, sterilization mode:

if the useless water time reaches 5 days, the current water temperature is more than or equal to 50 ℃ and the environmental temperature is more than or equal to 20 ℃, executing a hot water circulation mode; otherwise, the cold water replacement mode is executed.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.