CN210165556U

CN210165556U - Energy-saving graded electric water heater

Info

Publication number: CN210165556U
Application number: CN201920748589.1U
Authority: CN
Inventors: 刘林川; 李梦红; 李子成; 许文林; 李乐; 苟非非
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-03-20
Anticipated expiration: 2029-05-23

Abstract

The utility model relates to an energy-saving hierarchical formula electric water heater, by the water storage part with the instant heating part, be equipped with electric heating rod and water storage temperature sensor in the water storage inner bag of water storage part, the instant heating inner bag water inlet end of instant heating part passes through the connecting pipe and communicates the water storage inner bag, the water outlet end of instant heating inner bag is connected with out water temperature sensor; the water storage temperature sensor is electrically connected with the electric heating rod through a temperature controller; the water outlet temperature sensor is electrically connected with the instant heating inner container through a temperature controller. The utility model discloses an energy-conserving hierarchical formula electric water heater combines two kinds of water heater ingeniously, utilizes respective advantage to compensate the not enough of other side, utilizes the low-temperature difference to reduce the calorific loss of heat-retaining part, improves the partial temperature of intaking of instant heating and reduces power.

Description

Energy-saving graded electric water heater

Technical Field

The utility model relates to an electric water heater, in particular to an electric water heater divided into a water storage part and an instant heating part.

Background

The rapid development of socio-economic leads to an increasing demand for domestic energy, where domestic water heaters have a relatively high energy consumption. Therefore, the energy-saving water heater has important significance for saving energy and reducing consumption. But at present, the problems are always encountered in our family life:

the heating principle of water storage formula water heater is for utilizing the electrical heating principle, directly heats cold water to the required temperature of user, and heat storage formula water heater has following shortcoming:

1) because the water tank has large capacity and high heat preservation temperature, the heating to the required temperature needs long time;

2) the heat-storage water heater needs a heat-preservation process, even if heat-preservation materials exist, the heat-preservation materials have large heat loss due to large-area heat exchange, about 2-degree electricity is consumed for heat preservation every day, and the efficiency of the heat-storage water heater with 1-level energy consumption under the condition of heat preservation for 24 hours is only 74.8 percent through calculation;

3) the volume is large, and the toilet space is occupied.

The principle of the instant water heater is that a small part of water volume can reach the required temperature in a short time by using a high-power electric heating rod, and the instant water heater has the following defects:

1) the power of the cable is huge and reaches about 8000W, but the cable of the toilet of the newly-built Chinese house can only accept electrical appliances with the power of about 5500W at most at present, so that a plurality of families can only install the cable by changing a circuit;

2) the hot water is unstable, and the situation of cold water or low water yield can occur when the heating speed cannot keep up with the water when the water quantity is large or the water temperature is low.

Disclosure of Invention

The utility model aims to provide an energy-conserving hierarchical formula electric water heater for it is big to solve the heat loss of water storage formula electric water heater, and is inefficient, the problem that power consumption is big and instant heating type electric water heater power is high, the unstable problem of hot water output.

In order to achieve the above purpose, the technical scheme of the utility model is that: an energy-saving graded electric water heater comprises a water storage part and an instant heating part, wherein an electric heating rod and a water storage water temperature sensor are arranged in a water storage inner container of the water storage part, the water inlet end of the instant heating inner container of the instant heating part is communicated with the water storage inner container through a connecting pipe, and the water outlet end of the instant heating inner container is connected with a water outlet temperature sensor; the water storage temperature sensor is electrically connected with the electric heating rod through a temperature controller; the water outlet temperature sensor is electrically connected with the instant heating inner container through a temperature controller.

Furthermore, a water storage inner container of the water storage part is connected with a water inlet valve through a water inlet pipe.

Furthermore, the water outlet end of the instant heating inner container of the instant heating part is connected with a drain valve through a water outlet pipe.

Furthermore, the water storage inner container of the water storage part and the instant heating inner container of the instant heating part are connected into a whole, and the heat insulation layer is wrapped outside the instant heating inner container.

Further, the power of the electric heating rod is 2000W.

The utility model has the advantages that:

the utility model discloses an energy-conserving hierarchical formula electric water heater compares with current electric water heater, through the parameter that presets well, carries out a series of calculations, has obtained following conclusion:

(assuming that the average temperature of inlet water is 10 ℃) the water storage water heater with first-level energy consumption outputs 100L of hot water with the temperature of 40 ℃ and the total energy consumption of heat preservation for 24 hours is 18708.8kJ, and the efficiency is 74.8%. The total energy consumption of the grading water heater of the utility model is 14276kJ, the efficiency of the water storage part can reach 94.7 percent, the energy can be saved by 23.7 percent, and the result is considerable. And the power of the heating part is reduced by 3 times, the water heater can operate at 2000W, and finally, the water storage part at 2000W can operate at the power within 4000W without modifying a circuit. Through cost analysis and calculation, 15% and 17% are saved respectively compared with the other two staged water heaters.

To sum up, the utility model has the advantages of it is following:

1. the circuit is not required to be modified at the maximum of 4000W;

2. the complete heating time of the water storage part with the volume of the liner of 60L in summer is only 25 minutes, while the total heating time of the common water storage type water heater is 1.5 hours;

3. the heating time of the instant heating part is 3 seconds, which is similar to the market, and instant heating can be realized;

4. the last point is also the most important point, namely saving cost and energy.

Drawings

Fig. 1 is a schematic structural view of an energy-saving stepped electric water heater of the present invention;

FIG. 2 is a block diagram of the application process of the energy-saving hierarchical electric water heater of the present invention;

fig. 3 is a block diagram of the procedure of the water storage and heat preservation process of the energy-saving graded electric water heater of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model discloses an energy-conserving hierarchical formula electric water heater divide into two parts: water storage and instant heating.

The first part is a water storage part, is similar to the principle of a water storage water heater and comprises a water storage inner container 1, a heat preservation layer 7, a water inlet pipe 4, a connecting pipe 3, an electric heating rod 2 and the like. An electric heating rod 2 and a water storage water temperature sensor are arranged in the water storage inner container 1, and are connected with a water inlet valve through a water inlet pipe 4.

The second part is an instant heating part which has a similar principle with the instant heating water heater and consists of an instant heating inner container 5, a heat insulation layer 7, a water outlet pipe 6 and the like. The water inlet end of the instant heating liner 5 is communicated with the water storage liner 1 through a connecting pipe 3, and the water outlet end of the instant heating liner 5 is connected with a water outlet temperature sensor and is connected with a drain valve through a water outlet pipe 6.

The water storage temperature sensor in the water storage part is electrically connected with the electric heating rod 2 through a temperature controller. The water outlet temperature sensor is electrically connected with the instant heating inner container 5 through a temperature controller.

The utility model discloses an energy-conserving hierarchical formula electric water heater is equivalent to a water storage heating cabinet and an instant heating inner bag are connected and are formed, and the outside wraps up the one deck insulation material. Water enters the water storage inner container from the water inlet pipe, the 2000W electric heating rod is utilized to electrify and supply water for heating, the heating temperature is kept to about 30 ℃, when the water storage inner container is used, the water enters the 2000W instant heating inner container through the connecting pipe, the water is quickly heated to 40 ℃, and then the water is discharged through the water outlet pipe.

Traditional water storage water heater keeps warm water at 70 ℃ generally, under the heat retaining circumstances of 24 hours through the calculation, the efficiency of the water heater of one-level energy consumption is only 74.8%, and the utility model discloses only heat the heat preservation to 30 ℃ with water at the water storage part at first, according to the heat transfer science knowledge, reduce with the environmental temperature difference, the heat dissipation capacity diminishes, and efficiency will improve, under the heat retaining circumstances of 24 hours through the calculation, efficiency can reach 94.7%. Achieving an energy-saving effect.

The heating part carries out secondary quick heating on the water in the water storage part to reach the temperature required by a user. As the inlet water temperature of the instant heating part is 30 ℃, compared with the instant heating water heater, the inlet water temperature is improved, the power can be reduced, and the operation can be maintained by about 2000W.

The utility model discloses an energy-conserving hierarchical formula electric water heater combines two kinds of water heaters ingenious, utilizes respective advantage to compensate the not enough of other side. Like this utilize the low difference in temperature to reduce the heat loss of heat-retaining part, improve the hot part temperature of intaking and reduce power promptly like this, specific use is shown in fig. 2, 3.

The above embodiments are only specific illustrations of the technical solutions, working principles, and objective effects of the present invention, but are not limited to the technical principles, and any equivalents and modifications made by the technical principles of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides an energy-conserving hierarchical formula electric water heater, by water storage part and instant heating part constitute which characterized in that: an electric heating rod and a water storage water temperature sensor are arranged in a water storage inner container of the water storage part; the water inlet end of the instant heating inner container of the instant heating part is communicated with the water storage inner container through a connecting pipe, and the water outlet end of the instant heating inner container is connected with a water outlet temperature sensor; the water storage temperature sensor is electrically connected with the electric heating rod through a temperature controller; the water outlet temperature sensor is electrically connected with the instant heating inner container through a temperature controller.

2. The energy efficient staged electric water heater as recited in claim 1, further comprising: the water storage inner container of the water storage part is connected with a water inlet valve through a water inlet pipe.

3. The energy efficient staged electric water heater as recited in claim 1, further comprising: the water outlet end of the instant heating inner container of the instant heating part is connected with a drain valve through a water outlet pipe.

4. The energy efficient staged electric water heater as recited in claim 1, further comprising: the water storage inner container of the water storage part and the instant heating inner container of the instant heating part are connected into a whole, and the heat insulation layer is wrapped outside the instant heating inner container.

5. The energy efficient staged electric water heater as recited in claim 1, further comprising: the power of the electric heating rod is 2000W.