CN107726603A - A kind of external storage-type electric water heater of heater - Google Patents

Abstract

A kind of external storage-type electric water heater of heater, including shell, heat-insulation layer, inner bag and cold water inlet, also include water heater, check valve, water pump, hot water outlet pipe and circulation pipe, hot water outlet pipe one end is connected connection with inner bag, and check valve is provided with hot water outlet pipe；Water heater and water pump are arranged on circulation pipe, and water heater is adjacent with the water inlet end of circulation pipe, and the connection of the water inlet end and inner bag of circulation pipe is connected, the pipeline connection between water side and check valve and the water side of hot water outlet pipe；The heat-insulation layer wraps up inner bag；Or heat-insulation layer parcel inner bag, water pump, water heater and cold water inlet, circulation pipe and hot water outlet pipe in shell.Water heater is external, the generation of waterproof incrustation scale, improves the thermal efficiency, and water heater is low with respect to electric heating tube cost simple in construction, and maintenance or replacing are convenient.

Description

Storage type electric water heater with external heater

technical field

The invention relates to a storage type electric water heater.

Background technique

In the prior art, a water storage type electric water heater comprises a shell, an insulation layer, an inner container, an electric heating element, a cold water inlet pipe, a hot water outlet pipe and a sewage discharge pipe, and the electric heating element is located in the inner container. Existing problems: the electric heating element is prone to scale formation in a high-temperature water environment, which affects thermal efficiency; and it is inconvenient to replace, and the cost is high; the electric heating element has a complex structure and high cost.

Contents of the invention

The purpose of the present invention is to provide a water storage electric water heater with an external heater, which has the characteristics of high thermal efficiency, low cost and convenient maintenance.

The present invention is achieved in the following way: a water storage type electric water heater with an external heater, including a shell, an insulation layer, an inner tank and a cold water inlet pipe, and its special feature is that it also includes a water heater, a one-way valve, a water pump , hot water outlet pipe and circulation pipe,

The cold water inlet pipe is connected to the inner tank;

One end of the hot water outlet pipe is connected to the inner tank, and the one-way valve is arranged on the hot water outlet pipe; the water heater and the water pump are arranged on the circulation pipe, and the water heater is adjacent to the water inlet end of the circulation pipe; The water inlet is connected to the inner tank, and the water outlet is connected to the pipeline between the one-way valve and the water outlet of the hot water outlet pipe;

The insulation layer wraps the inner tank; or the insulation layer wraps the inner tank, the water pump, the water heater and the cold water inlet pipe, the circulation pipe and the hot water outlet pipe located in the shell.

The above-mentioned water storage type electric water heater with an external heater is special in that: the length direction of the inner tank is parallel to the horizontal plane, and the cold water inlet pipe includes a horizontal water inlet pipe part and a vertical water inlet pipe part,

One end of the horizontal water inlet pipe and the inner tank extends into the inner tank and is located at the lower part in the diameter direction;

The hot water outlet pipe includes a horizontal outlet pipe part and a vertical water outlet pipe part, and the horizontal water outlet pipe part extends into the inner container from one end of the inner container and is located at the upper part in the diameter direction;

The circulation pipe includes a horizontal circulation pipe part and a vertical circulation pipe part, the water heater and the water pump are arranged on the vertical circulation pipe part; the vertical circulation pipe part communicates with the horizontal water outlet pipe part; the horizontal circulation pipe part extends into the inner tank in the middle of the diameter.

The special feature of the storage-type electric water heater with an external heater is that: the opening of the water inlet end of the horizontal circulation part faces the ground.

The water storage type electric water heater with an external heater is special in that: the length direction of the inner tank is perpendicular to the horizontal plane,

The hot water outlet pipe extends into the top of the inner tank;

The cold water inlet pipe is connected to the lower end of the inner container, and the water inlet end of the circulation pipe is connected to the lower end of the inner container.

The present invention is a water storage type electric water heater with an external heater. Due to the adoption of such a structure, the water heater is external, and the generation of waterproof scale is improved, and the thermal efficiency is improved. Compared with the electric heating tube, the water heater has a simple structure and low cost. Easy to replace.

Description of drawings

Fig. 1 is a front view of the first embodiment of the present invention.

Fig. 2 is a front view of a second embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, a water storage electric water heater with an external heater includes a shell 1, an insulation layer 2, an inner tank 3, a cold water inlet pipe 4 and a sewage pipe 5, and the sewage pipe 5 communicates with the bottom of the water tank 3 ;

It also includes a water heater 6, a one-way valve 7, a water pump 8, a hot water outlet pipe 9 and a circulation pipe 10,

The cold water inlet pipe 4 is connected with the inner tank 3;

One end of the hot water outlet pipe 9 is connected to the inner tank 3, and the check valve 7 is provided on the hot water outlet pipe 9; the water heater 6 and the water pump 8 are arranged on the circulation pipe 10, and the water heater 6 and the circulation pipe 10 The water inlet is adjacent, the water inlet of the circulation pipe 10 is connected to the liner 3, and the water outlet is connected to the hot water outlet pipe 9 between the one-way valve 7 and the outlet of the hot water outlet pipe 9;

The insulation layer 2 wraps the liner 3;

Or the insulation layer 2 wraps the liner 3 , the water pump 8 , the water heater 6 and the cold water inlet pipe 4 , the circulation pipe 10 and the hot water outlet pipe 9 located in the shell 1 .

The length direction of the liner 3 is parallel to the horizontal plane, and the cold water inlet pipe 4 includes a horizontal water inlet pipe part and a vertical water inlet pipe part,

The horizontal water inlet pipe part and one end of the inner tank 3 extend into the inner tank and are located at the lower part in the diameter direction;

The hot water outlet pipe 9 includes a horizontal outlet pipe part and a vertical water outlet pipe part, and the horizontal water outlet pipe part extends into the inner container from one end of the inner container 3 and is located at the upper part in the diameter direction;

The circulation pipe 10 includes a horizontal circulation pipe part and a vertical circulation pipe part, and the water heater 6 and the water pump 8 are arranged on the vertical circulation pipe part; the vertical circulation pipe part communicates with the horizontal water outlet pipe part of the hot water outlet pipe; The circulation pipe part extends into the inner tank 3 and is located in the middle of the diameter direction; the sewage pipe 5 communicates with the body of the inner tank;

The opening of the water inlet end of the horizontal circulation part of the circulation pipe 10 faces the ground.

The water heater includes a water tank and a heating body arranged in the water tank; it can also be an instant electric water heater in the prior art. The instant electric water heater includes electric heating pipes, water pipes bent into a fence shape, and die-cast aluminum wrapping the electric heating pipes and water pipes.

In the standby state, the circulating pipe 10, the water heater 6, the water pump 8, the one-way valve 7 and the inner tank 3 constitute a circulating heating system to maintain a constant temperature of the water in the inner tank;

When in use, turn on the switch arranged at the end of the hot water outlet pipe, and the water in the liner 3 will flow out through the circulation pipe 10, the water heater 6, the water pump 8 and the hot water outlet pipe 9;

The outlet end of the hot water outlet pipe 9 is provided with a temperature sensor, and when the outlet water temperature is lower than the set temperature, the water heater 6 works.

Example 2

As shown in Figure 2, the length direction of the liner 3 is perpendicular to the horizontal plane,

The hot water outlet pipe 9 extends into the top of the inner tank 3;

The cold water inlet pipe 4 is connected to the lower end of the inner container 3, and the water inlet end of the circulation pipe 10 is communicated with the lower end of the inner container. Sewage pipe 5 communicates with the inner container and the opposite end of the ground.

What has been described above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, some improvements and modifications can be made without departing from the principle of the present invention, which are also regarded as the protection scope of the present invention.

Claims (4)

1. A water storage electric water heater with an external heater, comprising a shell, an insulation layer, an inner tank and a cold water inlet pipe, characterized in that it also includes a water heater, a one-way valve, a water pump, a hot water outlet pipe and a circulation Tube, The cold water inlet pipe is connected to the inner tank; One end of the hot water outlet pipe is connected to the inner tank, and the one-way valve is arranged on the hot water outlet pipe; the water heater and the water pump are arranged on the circulation pipe, and the water heater is adjacent to the water inlet end of the circulation pipe; The water inlet is connected to the inner tank, and the water outlet is connected to the pipeline between the one-way valve and the water outlet of the hot water outlet pipe; The insulation layer wraps the inner tank; or the insulation layer wraps the inner tank, the water pump, the water heater and the cold water inlet pipe, the circulation pipe and the hot water outlet pipe located in the shell. 2. A water storage electric water heater with an external heater according to claim 1, characterized in that: the length direction of the inner tank is parallel to the horizontal plane, and the cold water inlet pipe includes a horizontal water inlet pipe part and a vertical water inlet pipe part , One end of the horizontal water inlet pipe and the inner tank extends into the inner tank and is located at the lower part in the diameter direction; The hot water outlet pipe includes a horizontal outlet pipe part and a vertical water outlet pipe part, and the horizontal water outlet pipe part extends into the inner container from one end of the inner container and is located at the upper part in the diameter direction; The circulation pipe includes a horizontal circulation pipe part and a vertical circulation pipe part, the water heater and the water pump are arranged on the vertical circulation pipe part; the vertical circulation pipe part communicates with the horizontal water outlet pipe part; the horizontal circulation pipe part extends into the inner tank in the middle of the diameter. 3 . The storage type electric water heater with an external heater according to claim 2 , wherein the opening of the water inlet end of the horizontal circulation part faces the ground. 4 . 4. A water storage electric water heater with an external heater according to claim 1, characterized in that: the length direction of the liner is perpendicular to the horizontal plane, The hot water outlet pipe extends into the top of the inner tank; The cold water inlet pipe is connected to the lower end of the inner container, and the water inlet end of the circulation pipe is connected to the lower end of the inner container.