Control method for water replenishing of water tank

Abstract

The control method comprises the steps that a liquid level sensor needs to be installed in a tank body, a high water level and a low water level are arranged in the tank body, and when the water level in the tank body is lower than the low water level, a water supplementing process is started; the water supplementing amount can be adjusted according to the water temperature in the tank body after water is supplemented for the first time. The tank body is provided with an electric control system, the electric control system comprises an electric control module serving as a main part of the electric control system, the water supplementing pump, the water supplementing valve and the water outlet valve are all controlled by the electric control module, and the liquid level sensor and the temperature sensor are both in electric signal connection with the electric control module so as to detect the liquid level height and the water temperature in real time. The temperature sensor is used for detecting the water temperature before and after water replenishing, the electric control system is used for calculating the difference value between the water temperature before water replenishing and the water temperature after water replenishing, and if the water temperature after water replenishing is too low, the water replenishing amount for the second time is properly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drinking water equipment, in particular to a control method for water tank water replenishment. Background Art

[0002] In the hot drinking water system, the heat storage tank plays a very important role. It is used to store preheated drinking water. The water outlet pipe of the heat storage tank is connected to the heating body, so that the hot water output by the heat storage tank can be output at a higher temperature after secondary heating, so that users can drink boiled water in a short time.

[0003] A drinking water device is provided in the prior art, and the authorization announcement number is CN216984540U, which discloses a quick-open drinking water device with continuous water output, including a water supply device, a heat exchanger, a heating body, a heat storage tank and a water outlet valve. A water pump is connected between the water supply device and the heat exchanger, one end of the heat storage tank is connected to the hot water outlet of the heat exchanger through a pipeline, and the other end of the heat storage tank is connected to the input end of the heating body; the output end of the heating body is connected to the water outlet valve. The hot water from the heat exchanger is stored in the heat storage tank for standby, which reduces the time for the heating body to boil water, improves the heating efficiency, and realizes quick opening, that is, it is ready to drink at the touch of a button. This technical solution has high heating efficiency, can quickly produce boiling water, and does not reduce the flow rate; it has a simple structure, and at the same time realizes the warm boiling water function to meet diverse needs.

[0004] Later, in view of the above technical solution, in order to facilitate heating of water, the applicant equipped the heat storage tank with a heater so as to heat the supplementary normal temperature water.

[0005] However, once the user's water intake is large, causing the water level in the heat storage tank to be lower than the preset low water level, after the water replenishment pipeline replenishes the heat storage tank with normal temperature water to the high water level, the temperature of the drinking water in the heat storage tank will often drop sharply. For example, the hot water that was originally 95°C will drop by 50-70°C after replenishment, that is, the water temperature after replenishment is at 25-45°C. The water needs to be reheated. Considering the time taken for reheating, the user cannot use the hot water immediately, affecting the user's experience of drinking hot water. Summary of the invention

[0006] The purpose of the present invention is to provide a control method for water tank water replenishment, which can adjust the water replenishment amount according to the water temperature in the tank body.

[0007] The object of the present invention is achieved in this way: a control method for water tank water replenishment, the hardware system of the method comprises:

[0008] A heat storage tank for storing and preheating drinking water, which is connected to a water supply pipe and a water outlet pipe, the heat storage tank is equipped with a heater for heating the drinking water inside, a water supply pump and a water supply valve are installed on the water supply pipe, the water supply pipe is connected to a normal temperature water tank to supply normal temperature water, and a water outlet valve is installed on the water outlet pipe;

[0009] A liquid level sensor for detecting the water level in the heat storage tank, which is plugged into the heat storage tank and preset with a high gear and a low gear to correspond to the high water level and the low water level respectively;

[0010] At least one temperature sensor for detecting the water temperature in the heat storage tank body, which is plugged into the heat storage tank body;

[0011] The electric control system includes an electric control module as its main part. The water supply pump, water supply valve and water outlet valve are all controlled by the electric control module. The liquid level sensor and temperature sensor are both connected to the electric control module by electrical signals to detect the liquid level height and water temperature in real time.

[0012] When the method is executed, it includes the following steps:

[0013] When the liquid level sensor detects that the heat storage tank is at a low water level, the water outlet valve is closed, and the water supply pump and the water supply valve are turned on at the same time to supply water to the heat storage tank until the water level in the heat storage tank reaches a preset value and then the water supply is stopped;

[0014] During the water replenishment process, the heater is turned on to heat the water;

[0015] After the water replenishment stops, if the real-time water temperature is lower than the preset hot water temperature value, the heater continues to heat the water until the water temperature reaches the preset hot water temperature value;

[0016] The temperature sensor is used to detect the water temperature before and after water replenishment, and the electronic control system is used to calculate the difference between the water temperature before and after water replenishment.

[0017] Adjust the amount of water to be replenished in the next replenishment process according to the water temperature difference before and after the last replenishment:

[0018] On the premise that the preset hot water temperature value remains unchanged, if the water temperature difference before and after the last water replenishment is lower than or equal to the preset value, the next water replenishment amount is equal to the previous water replenishment amount; if the water temperature difference before and after the last water replenishment is higher than the preset value, the next water replenishment amount is reduced.

[0019] Furthermore, there are three temperature sensors, namely temperature sensor 1, temperature sensor 2, and temperature sensor 3. The temperature sensor 1, temperature sensor 2, and temperature sensor 3 are arranged in sequence from top to bottom, and the temperature sensor 1 and temperature sensor 3 are facing the high water level and the low water level respectively.

[0020] Furthermore, the water level after a single water replenishment is higher than the low water level and lower than the high water level.

[0021] Furthermore, when the water supply pump and the water supply valve are turned on, the heater is turned on at the same time.

[0022] Furthermore, the water replenishment pump is configured as a variable frequency water delivery pump, and when controlling the amount of replenishment water, the electronic control module controls the opening of the water replenishment valve and / or the water replenishment pump.

[0023] Furthermore, the heater is configured as a variable frequency heater.

[0024] Furthermore, the electric control system presets the heating time of a single water replenishment, the starting point of the heating time is the time point when the water replenishment pump and the water replenishment valve are simultaneously turned on, and the ending point of the heating time is the time point when the water replenishment is completed and the water temperature reaches the preset hot water temperature value;

[0025] If the heating time of the first water filling process exceeds 1 minute, the next water filling amount will be reduced.

[0026] Furthermore, if the heating time exceeds 20-30 seconds, the output power of the heater is increased during the second water replenishment process.

[0027] Furthermore, the preset hot water temperature value is 95°C-100°C.

[0028] Furthermore, the water temperature difference before and after water replenishment is no more than 30°C.

[0029] The beneficial effects of the present invention are:

[0030] 1. The water replenishment amount can be adjusted according to the water temperature in the tank. If the water temperature difference before and after the last water replenishment is higher than the preset value, that is, the water temperature drops significantly after the water replenishment, the heating time will be correspondingly longer, which will also affect the user's hot water drinking experience. Therefore, the next water replenishment amount needs to be reduced so that the drinking water can be heated to the predetermined temperature in a shorter time. The ultimate goal is to be able to produce and output hot water in a shorter time;

[0031] 2. The water level after a single water replenishment needs to be between the high water level and the low water level. The amount of water that needs to be heated is significantly reduced compared to the existing technology, that is, there is no need to replenish water to the high water level, which reduces the amount of water that needs to be heated, thereby shortening the heating time, so that hot water can be produced and output faster;

[0032] 3. Not only can the heating time be shortened by reducing the amount of water replenishment, but the heating time can also be further shortened by increasing the output power of the heater. The second water replenishment amount can also be controlled by calculating the heating time during the previous water replenishment process, thereby further shortening the heating time during the second water replenishment process and speeding up the output of hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a system layout diagram of the first embodiment of the present invention.

[0034] Figure 2 It is a system layout diagram of the second embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the attached embodiment of the present invention Figure 1-2 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 The first embodiment is shown. The first embodiment provides a hardware system of a water tank, and the system includes:

[0037] A heat storage tank 1 for storing and preheating drinking water is connected to a water supply pipe 6 and a water outlet pipe 7. The heat storage tank 1 is equipped with a heater 2 for heating the drinking water therein. A water supply pump 4 and a water supply valve 5 are installed on the water supply pipe 6. The water supply pipe 6 is connected to a normal temperature water tank to supply normal temperature water. A water outlet valve 8 is installed on the water outlet pipe 7.

[0038] The liquid level sensor 9 for detecting the water level in the heat storage tank 1 is plugged into the heat storage tank 1 and presets a high gear and a low gear to correspond to the high water level ( Figure 1-2 S2 in) and low water level ( Figure 1-2 S1 in ), where L can be defined as the real-time water level (such as Figure 1-2 shown);

[0039] A temperature sensor 10 for detecting the water temperature in the heat storage tank body 1, which is plugged into the heat storage tank body 1;

[0040] The electronic control system includes an electronic control module 3 as its main part. The water supply pump 4, the water supply valve 5 and the water outlet valve 8 are all controlled by the electronic control module 3. The liquid level sensor 9 and the temperature sensor 10 are both connected to the electronic control module 3 via electrical signals to detect the liquid level height and water temperature in real time.

[0041] like Figure 2The second embodiment is shown. The second embodiment provides another hardware system of a water tank. The difference between this system and the system of the first embodiment is that there are three temperature sensors 10, namely temperature sensor 1 10a, temperature sensor 2 10b, and temperature sensor 3 10c. Temperature sensor 1 10a, temperature sensor 2 10b, and temperature sensor 3 10c are arranged in sequence from top to bottom, and temperature sensor 1 10a and temperature sensor 3 10c are facing the high water level and the low water level respectively. If there is no water usage record within 0.5-1 hour, that is, the water outlet valve 8 has no opening action within 0.5-1 hour, the electronic control module 3 needs to start the water supply pump 4 and the water supply valve 5, and the opening of the water supply valve 5 is adjusted to the maximum. The flow rate of the water supply pump 4 can also be opened to the maximum, and water is replenished to the highest water level S2 at the fastest speed, and then the heater 2 is used to operate in high-power mode for heating, so that the drinking water in the heat storage tank body 1 is quickly heated to a predetermined water temperature value. When the temperature sensor 10a senses that the water temperature has reached the predetermined value, the heater 2 reduces the output power of the heater 2, and at the same time comprehensively judges the detection values ​​of the temperature sensor 2 10b and the temperature sensor 3 10c; when the temperature sensor 1 10a, the temperature sensor 2 10b and the temperature sensor 3 10c all reach the predetermined water temperature values, the water supply pump 4, the water supply valve 5 and the heater 2 are turned off.

[0042] According to the above system setting scheme, a preferred water replenishment control method is proposed. When the method is executed, it includes the following steps:

[0043] When the liquid level sensor 9 detects that the heat storage tank body 1 is at a low water level, the water outlet valve 8 is closed, and the water supply pump 4 and the water supply valve 5 are turned on at the same time to supply water to the heat storage tank body 1 until the water level in the heat storage tank body 1 reaches a preset value and then the water supply is stopped;

[0044] During the water replenishment process, heater 2 is turned on to heat the water;

[0045] After the water replenishment stops, if the real-time water temperature is lower than the preset hot water temperature value, the heater 2 continues to heat the water until the water temperature reaches the preset hot water temperature value;

[0046] The temperature sensor 10 is used to detect the water temperature before and after the water replenishment, and the electronic control system is used to calculate the difference between the water temperature before and after the water replenishment;

[0047] Adjust the amount of water to be replenished in the next replenishment process according to the water temperature difference before and after the last replenishment:

[0048] On the premise that the preset hot water temperature value remains unchanged, if the water temperature difference before and after the last water replenishment is lower than or equal to the preset value, that is, the water temperature drops little after the water replenishment, then the next water replenishment amount is equal to the last water replenishment amount; if the water temperature difference before and after the last water replenishment is higher than the preset value, that is, the water temperature drops greatly after the water replenishment, which will correspondingly lead to a longer heating time and affect the user's hot water drinking experience. Therefore, the next water replenishment amount needs to be reduced so that the drinking water can be heated to the predetermined temperature in a shorter time.

[0049] It is worth noting that the water level after a single water replenishment is higher than the low water level and lower than the high water level, that is, compared with the prior art, the amount of water replenished each time in the present invention is reduced, and the water level after a single water replenishment needs to be between the high water level and the low water level. The amount of water that needs to be heated is significantly reduced compared with the prior art, that is, there is no need to replenish water to the high water level, reducing the amount of water that needs to be heated, thereby shortening the heating time so that hot water can be produced and output faster.

[0050] Among them, the preset hot water temperature value is 95℃-100℃, the water temperature difference before and after water replenishment is no more than 30℃, and the lowest acceptable water temperature is 65℃.

[0051] In order to heat the water faster, when the water supply pump 4 and the water supply valve 5 are turned on, the heater 2 is turned on at the same time, thereby shortening the heating process faster.

[0052] The above-mentioned water replenishment pump 4 is set as a variable frequency water delivery pump. When controlling the amount of replenishment water, the electronic control module 3 controls the opening of the water replenishment valve 5 and / or the rotation speed of the water replenishment pump 4, that is, the electronic control module 3 can control the opening of the water replenishment valve 5, and can also control the rotation speed of the water replenishment pump 4, and can also control the water replenishment pump 4 and the water replenishment valve 5 at the same time.

[0053] In order to shorten the heating time during the water replenishment process, the specific means are as follows:

[0054] The above-mentioned heater 2 is set as a variable frequency heater, and the electronic control system presets the heating time for a single water replenishment. The starting point of the heating time is set to the time point when the water replenishment pump 4 and the water replenishment valve 5 are simultaneously turned on (when the water replenishment pump 4 and the water replenishment valve 5 are turned on, the heater 2 is also in the on state), and the end point of the heating time is the time point when the water replenishment is completed and the water temperature reaches the preset hot water temperature value (at this time, the water replenishment pump 4, the water replenishment valve 5 and the heater 2 are all closed).

[0055] If the heating time exceeds 1 minute during the first water replenishment, reduce the amount of water replenished the next time to shorten the heating time.

[0056] If the heating time during the first water replenishment exceeds 20-30 seconds, the output power of heater 2 needs to be increased during the second water replenishment process (the second water replenishment amount can be equal to or lower than the first water replenishment amount) to shorten the heating time of the second water replenishment process; accordingly, if the heating time during the first water replenishment is less than or equal to 20-30 seconds, the output power of heater 2 can be maintained during the second water replenishment process.

[0057] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through an intermediate connecting component, and the specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0058] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A control method for water tank water replenishment, characterized in that: The hardware system of the method includes: A heat storage tank (1) for storing and preheating drinking water, which is connected to a water supply pipe (6) and a water outlet pipe (7), the heat storage tank (1) is equipped with a heater (2) for heating the drinking water therein, the water supply pipe (6) is equipped with a water supply pump (4) and a water supply valve (5), the water supply pipe (6) is connected to a normal temperature water tank to supply normal temperature water, and the water outlet pipe (7) is equipped with a water outlet valve (8); A liquid level sensor (9) for detecting the water level in the heat storage tank (1), which is plugged into the heat storage tank (1) and has a high gear and a low gear preset to correspond to a high water level and a low water level, respectively; At least one temperature sensor (10) for detecting the water temperature in the heat storage tank body (1), which is plugged into the heat storage tank body (1); An electric control system, the electric control system comprises an electric control module (3) as its main part, the water supply pump (4), the water supply valve (5) and the water outlet valve (8) are all controlled by the electric control module (3), and the liquid level sensor (9) and the temperature sensor (10) are both connected to the electric control module (3) via electrical signals to detect the liquid level height and water temperature in real time; When the method is executed, it includes the following steps: When the liquid level sensor (9) detects that the heat storage tank body (1) is at a low water level, the water outlet valve (8) is closed, and the water supply pump (4) and the water supply valve (5) are simultaneously turned on to supply water to the heat storage tank body (1) until the water level in the heat storage tank body (1) reaches a preset value, and then the water supply is stopped; During the water replenishment process, the heater (2) is turned on to heat the water; After the water replenishment stops, if the real-time water temperature is lower than the preset hot water temperature value, the heater (2) continues to heat the water until the water temperature reaches the preset hot water temperature value; The temperature of the water before and after the water replenishment is detected by a temperature sensor (10), and the difference between the water temperature before and after the water replenishment is calculated by an electronic control system; Adjust the amount of water to be replenished in the next replenishment process according to the water temperature difference before and after the last replenishment: On the premise that the preset hot water temperature value remains unchanged, if the water temperature difference before and after the last water replenishment is lower than or equal to the preset value, the next water replenishment amount is equal to the previous water replenishment amount; if the water temperature difference before and after the last water replenishment is higher than the preset value, the next water replenishment amount is reduced.

2. A water tank water replenishment control method according to claim 1, characterized in that: The temperature sensors (10) are provided in three numbers, namely, temperature sensor one (10a), temperature sensor two (10b), and temperature sensor three (10c); the temperature sensor one (10a), temperature sensor two (10b), and temperature sensor three (10c) are arranged in sequence from top to bottom, and the temperature sensor one (10a) and temperature sensor three (10c) are respectively facing the high water level and the low water level.

3. A water tank water replenishment control method according to claim 1, characterized in that: The water level after a single water replenishment is higher than the low water level and lower than the high water level.

4. A water tank water replenishment control method according to claim 3, characterized in that: When the water replenishment pump (4) and the water replenishment valve (5) are turned on, the heater (2) is turned on at the same time.

5. A water tank water replenishment control method according to claim 4, characterized in that: The water replenishment pump (4) is configured as a variable frequency water delivery pump. When controlling the amount of replenished water, the electric control module (3) controls the opening of the water replenishment valve (5) and / or the water replenishment pump (4).

6. A water tank water replenishment control method according to claim 5, characterized in that: The heater (2) is configured as a variable frequency heater.

7. A water tank water replenishment control method according to claim 6, characterized in that: The electric control system presets a heating time for a single water replenishment, wherein the starting point of the heating time is the time point when the water replenishment pump (4) and the water replenishment valve (5) are simultaneously turned on, and the ending point of the heating time is the time point when the water replenishment is completed and the water temperature reaches a preset hot water temperature value; If the heating time of the first water filling process exceeds 1 minute, the next water filling amount will be reduced.

8. A water tank water replenishment control method according to claim 7, characterized in that: If the heating time exceeds 20-30 seconds, the output power of the heater (2) is increased during the second water replenishment process.

9. A water tank water replenishment control method according to any one of claims 1 to 8, characterized in that: The preset hot water temperature is 95℃-100℃.

10. A water tank water replenishment control method according to claim 9, characterized in that: The water temperature difference before and after water replenishment is no more than 30℃.

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