CN202452708U - Water heater - Google Patents

Abstract

The utility model discloses a water heater which comprises a water tank, a control unit, a display unit and a water supplementing pipeline arranged at the bottom of the water tank. The water tank is provided with at least two temperature sensors which are connected with the control unit and used for detecting water temperature in the water tank. The temperature sensors for detecting the water temperature in the water tank are arranged at different water level positions of the water tank, and the water supplementing pipeline is provided with a temperature sensor for detecting temperature of supplemented water. According to the water heater, by detecting the temperature of the supplemented water and the temperature of different-height levels of the water tank, hot water quantity is calculated through the control unit and displayed through the display unit.

Description

a water heater

technical field

The utility model relates to a water heater, in particular to a water heater capable of calculating and displaying the amount of hot water in a water tank.

Background technique

The water tanks of current water heaters and other water storage devices with heating functions can only display the temperature detected by the temperature sensor. Due to the difference in the temperature of the upper and lower water in the water tank, it is difficult to calculate the actual amount of hot water in the water tank, and it is difficult to achieve accurate display.

In order to visually display the amount of hot water in the water tank, the current method for displaying the amount of hot water in the water tank mainly adopts the following two methods:

The first is to install multiple temperature sensors in the water tank from top to bottom in sequence, and display the detected temperature in different colors. As shown in Figure 1, 5 temperature sensors are set from top to bottom. The 5 temperature sensors display the temperature measured by the 5 temperature sensors, and the user estimates the remaining hot water through the temperature values of 5 points. This method of displaying the amount of hot water uses a plurality of temperature sensors, which is costly and does not have an intuitive display of the amount of hot water required by the user.

The second is to install a temperature sensor on the top and bottom of the water tank. The temperature detected by these two points is used to estimate the temperature of other points in the water tank from top to bottom, and then display each temperature in different colors. This method uses fewer sensors, and the temperature of multiple points is estimated. Although the cost is low, the temperature of each point of the water tank seen by the user is not the actual water temperature, and there is no intuitive display of the amount of hot water required by the user.

Also have some to have display device at present, show remaining hot water quantity, generally the numerical value that shows is not accurate enough, and error is bigger.

Based on this, how to develop a water heater, by setting fewer temperature sensors, calculate and display more accurate hot water volume, reduce costs, and bring great convenience to users.

Contents of the invention

In order to solve the problems of inaccurate calculation and high cost of the hot water volume in the existing water tank, the utility model provides a calculation and display method for the hot water volume of the water tank, which has low cost, accurate calculation of the hot water volume and can be directly displayed.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to realize:

A water heater, comprising a water tank, a control unit, a display unit, and a replenishment pipeline provided at the bottom of the water tank, at least two temperature sensors connected to the control unit for detecting the temperature of the water in the water tank are arranged on the water tank, and the used for detecting The temperature sensors of the water temperature in the water tank are arranged at different water levels of the water tank, and the temperature sensors for detecting the temperature of the water replenishment are arranged on the water replenishment pipeline.

Preferably, in order to save production costs, the number of temperature sensors provided on the water tank is preferably two, and if two are used, the calculation accuracy of the hot water volume can still reach 1%.

Further, the display unit simultaneously displays the value of TN.

Preferably, the display unit adopts a liquid crystal display.

Still further, the control unit is an MCU.

Compared with the prior art, the advantages and positive effects of the utility model are: the water heater of the utility model can detect the temperature of the supplementary water by setting a temperature sensor on the supplementary water pipeline, and by setting at least two sensors at different heights on the water tank The temperature sensor can detect the temperature of different height layers of the water tank, and the amount of hot water calculated by the control unit is displayed on the display unit.

After reading the detailed description of the embodiments of the utility model in conjunction with the accompanying drawings, other features and advantages of the utility model will become clearer.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a temperature sensor in the prior art;

Fig. 2 is a schematic structural view of an embodiment of the water heater proposed by the utility model;

FIG. 3 is a schematic structural diagram of the display unit in FIG. 2 .

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

Embodiment 1, as shown in FIG. 2, the water heater of this embodiment includes a water tank 1 and a control unit, and a water replenishment pipeline is provided at the bottom of the water tank 1. One end of the water replenishment pipeline is connected to a water source, and the other end is connected to the water tank 1 for replenishing water for the water heater. , N temperature sensors T1-TN connected to the control unit are arranged on the water tank 1 for detecting the water temperature in the water tank, and one temperature sensor T0 is arranged on the water replenishment pipeline for detecting the replenishment water temperature, since the water tank The water temperature at different heights in 1 is different, and there is a height difference between the N temperature sensors, which are used to detect the temperature of different water levels in the water tank. Since the positional relationship of the temperature sensors T1 to TN in this embodiment is from low to high The heights are arranged in order. For the convenience of expression, the temperatures detected by the N temperature sensors are correspondingly T1～TN, and the temperature detected by the temperature sensor T0 is correspondingly T0. The water heater also includes a display unit 2, all The temperature sensor sends the detected temperature to the control unit, and the control unit calculates the amount of hot water in the water tank, and displays it through the display unit 2, wherein, N is an integer greater than or equal to 2. The control unit is set in the water heater shell, so it is not shown in Fig. 2, and the control unit can be realized by an MCU.

In this embodiment, in order to save production cost, the number of temperature sensors arranged on the water tank is preferably 2, and if 2 are used, the calculation accuracy of the amount of hot water can still reach 1%, which is still higher than that of the existing water heater. The accuracy of water volume calculation is high.

Generally, the water temperature in the higher position in the water tank is correspondingly higher, and the display unit displays the value of TN at the same time.

Referring to FIG. 3 , the display unit preferably adopts a liquid crystal display.

The water heater of the utility model can detect the temperature of the water supply by installing a temperature sensor on the water supply pipeline, and can detect the temperature of the water tank at different heights by arranging at least two temperature sensors at different heights on the water tank, and the control unit calculates The amount of hot water produced is displayed on the display unit. In addition, in this embodiment, two temperature sensors are preferably used to realize the implementation, which effectively reduces the cost.

The calculation method of the hot water volume of the water heater in this embodiment is:

Hot water volume=[(T1+T2+…+TN)/(N×T)]×100%,

Among them, if the following conditions exist:

When any value TX in T1～TN≤T0, make TX=0, otherwise TX is the value actually detected.

That is to say, if any value in T1～TN is equal to or lower than the supplementary water temperature, it is considered that the temperature value is not hot water. When calculating the amount of hot water, the temperature value at this point is calculated as 0, which can effectively prevent abnormal The temperature value of hot water is mixed into the formula for calculating the amount of hot water, which affects the calculation accuracy of the amount of hot water.

According to the calculation method of this hot water volume, it can be seen from the formula that there may be a situation where the hot water volume is greater than 100%, which means that the actual water temperature in the water tank is higher than the set water temperature value, which is more reflected in the water tank than equal to 100%. The relationship between the water temperature and the set water temperature is more in line with the actual situation.

By adopting the method for calculating the amount of hot water of the water heater in this embodiment, a more accurate amount of hot water can be calculated by setting fewer sensors, and the method is simple and accurate.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples. Those of ordinary skill in the art may make changes, modifications, additions or replacements within the essential scope of the present utility model. It should also belong to the protection scope of the present utility model.

Claims (3)

1. A water heater, comprising a water tank, a control unit, a display unit and a replenishment pipeline arranged at the bottom of the water tank, characterized in that at least two temperature sensors connected to the control unit for detecting the water temperature in the water tank are set on the water tank , the temperature sensors for detecting the water temperature in the water tank are arranged at different water levels of the water tank, and the temperature sensors for detecting the temperature of the water replenishment are arranged on the water replenishment pipeline. 2. The water heater according to claim 1, wherein the display unit adopts a liquid crystal display. 3. The water heater according to claim 1 or 2, characterized in that the control unit is an MCU.

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