CN204460738U - Closed electric water heater - Google Patents

Abstract

The utility model discloses a closed electric water heater relates to water heater technical field. The closed electric water heater comprises an inner container, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are arranged on the inner container, the water inlet pipe is provided with a safety valve, the water inlet pipe also comprises a vent valve and a drain valve, the vent valve and the drain valve are communicated with the inner container, and the drain valve is arranged on the inner container or arranged on the water inlet pipe and positioned between the safety valve and the inner container. The utility model provides a closed electric water heater is provided with breather valve and drain valve that is linked together with the inner bag, when because the water cut off leads to gondola water faucet department can't go out water, only need open breather valve and drain valve, can be through the log raft play in the drain valve with the inner bag, convenient operation, setting up of breather valve has increased the inlet channel of inner bag for the drain valve department drainage is smooth and easy.

Description

A closed electric water heater

technical field

The utility model relates to the technical field of water heaters, in particular to a closed electric water heater.

Background technique

At present, a closed electric water heater is shown in Figure 1, including an inner tank 1', an inlet pipe 2' and an outlet pipe 3' arranged on the inner tank 1', and a safety valve 4' is arranged on the inlet pipe 2', because the outlet pipe 3' The port in the inner tank 1' is set at a very high position. When the water is cut off, no cold water will enter the inner tank 1', and the shower 5' can only flow out of the port of the outlet pipe 3' in the inner tank 1' water above. And when the user needs to discharge the water in the inner tank 1' from other positions other than the shower 5', or when the water in the inner tank 1' needs to be used when the water is stopped, the water inlet pipe 2' and the water outlet pipe 3' need to be drained. Or remove the position of the sewage outlet, or discharge a small amount of water through the pressure relief hole of the safety valve.

The above method has the following problems:

1. It is difficult to disassemble the water pipe or the magnesium rod of the sewage outlet, and if only the water pipe is removed, the water will flow out through the water pipe hole or the sewage hole under the action of gravity, but there is no air intake path, and there will be a water stop for a while and then enter The air is very unsmooth and there are hidden dangers. After the water is drained and the pipeline is reinstalled, water leakage is prone to occur;

2. The water discharged from the water pipe or the sewage outlet will be mixed with other foreign matter such as dirt at the bottom of the inner tank because it is discharged from the bottom, and the discharged water is of poor quality and cannot be used.

In view of the above problems, it is urgent to propose a new closed electric water heater to solve the problems of inconvenient operation, poor water quality and unsmooth drainage when the liner of the existing closed electric water heater is discharged from other positions than the shower.

Utility model content

The purpose of the utility model is to propose a closed electric water heater which can discharge the water in the inner tank through the drain valve, is easy to operate, has good water quality and smooth drainage.

For this purpose, the utility model adopts the following technical solutions:

A closed-type electric water heater, comprising an inner container and a water inlet pipe and an outlet pipe arranged on the inner container, the water inlet pipe is provided with a safety valve, and also includes a vent valve and a drain valve both connected to the inner container, The drain valve is arranged on the inner tank or on the water inlet pipe and is located between the safety valve and the inner tank.

Preferably, a gate valve is arranged on the water inlet pipe, and when the drain valve is arranged on the water inlet pipe, the drain valve is located between the gate valve and the inner tank.

Preferably, the ventilation valve is arranged on the water outlet pipe.

Preferably, the ventilation valve is arranged on the top of the inner container.

Preferably, the drain valve is installed at the bottom of the inner container or on the head of the inner container.

Preferably, the position of the water inlet of the drain valve is set a preset distance higher than the bottom of the inner container.

Preferably, the drain valve is arranged on the water inlet pipe, and a part of the water inlet pipe located in the liner has a plurality of liquid diffuser holes, and the liquid diffuser hole at the lowest position is higher than the bottom of the inner liner A preset distance setting.

Preferably, an exhaust valve is provided on the outlet pipe or on the top of the liner.

The beneficial effects of the utility model are:

The closed electric water heater provided by the utility model is provided with a vent valve and a drain valve connected with the inner tank. When the water cannot be discharged from the shower due to a water stop, only the vent valve and the drain valve can be opened to pass through the drain valve. The water in the inner tank is discharged, and the operation is convenient. The setting of the breather valve increases the air intake path of the inner tank, so that the drainage at the drain valve is smooth.

Description of drawings

Fig. 1 is the structural representation of existing closed electric water heater;

Fig. 2 is a schematic structural view of the closed electric water heater provided by Embodiment 1 of the present utility model;

Fig. 3 is one of the structural schematic diagrams of the closed electric water heater provided by the second embodiment of the utility model;

Fig. 4 is the second structural diagram of the closed electric water heater provided by the second embodiment of the utility model;

Fig. 5 is the third structural diagram of the closed electric water heater provided by the second embodiment of the utility model;

Fig. 6 is the fourth schematic structural view of the closed electric water heater provided by the second embodiment of the utility model.

In the figure, 1', liner; 2', water inlet pipe; 3', water outlet pipe; 4', safety valve; 5', shower;

1. Inner container; 2. Water inlet pipe; 21. Diffuser hole; 3. Outlet pipe; 4. Safety valve; 5. Shower; 6. Cold water pipe; 7. Water regulating valve; 8. Main outlet pipe; Breathing valve; 10, drain valve; 11, gate valve.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Embodiment one:

This embodiment provides a closed electric water heater, as shown in Figure 2, which includes an inner container 1 and a water inlet pipe 2 and an outlet pipe 3 arranged on the inner container 1, and the outlet of the cold water pipe 6 is divided into two branches, One branch is connected to the water inlet pipe 2, and the other branch and the water outlet pipe 3 are connected to the main water outlet pipe 8 through the water regulating valve 7. The ratio of hot and cold water to obtain a more comfortable water temperature. The water inlet pipe 2 is provided with a safety valve 4, which can prevent the water in the inner tank 1 from flowing back to the cold water pipe 6 from the water inlet pipe 2 due to insufficient pressure.

A ventilation valve 9 is arranged on the water outlet pipe 3 , and a drain valve 10 is arranged on the water inlet pipe 2 , and the drain valve 10 is located between the safety valve 4 and the inner tank 1 . When using the water heater normally, the vent valve 9 and the drain valve 10 are all closed. When the water is cut off, because the port position of the water inlet pipe 2 in the inner tank 1 is relatively high, the shower 5 cannot discharge water. If the water in the inner tank 1 needs to be used, the vent valve 9 and the drain valve 10 are opened, and the water Will flow out from the drain valve 10, because the vent valve 9 increases the air intake path of the inner bag 1, the outside air can enter the inner bag 1 through the vent valve 9, so that the drain valve 10 drains smoothly. After the draining is completed, the vent valve 9 and the drain valve 10 are closed. After the water comes in, when the water heater needs to be used, first open the water regulating valve 7 to discharge the gas in the inner tank 1, and when the shower 5 drains smoothly, close the water regulating valve 7 and then turn on the machine for heating. Also can be provided with exhaust valve on the top of water outlet pipe 3 or liner 1, like this, need not open water regulating valve 7 exhaust, when cold water enters liner 1, the gas in liner 1 is directly discharged by exhaust valve.

In order to increase the water intake of the water inlet pipe 2, a part of the water inlet pipe 2 located in the inner tank 1 is provided with a plurality of liquid diffuser holes 21, and the lowest position of the liquid diffuser holes 21 is higher than the bottom of the inner tank 1 by a preset distance L1 Therefore, impurities such as dirt deposited at the bottom of the inner tank 1 will not be discharged by the drain valve 10, so that the quality of the discharged water is better. Vent valve 9 and drain valve 10 are all arranged on the external pipeline of water heater, do not change the structure of original water heater, can directly carry out transformation on the basis of existing water heater, and applicable range is wide.

In order to ensure that the water in the inner tank 1 can be discharged from the drain valve 10 when the water is not cut off, a gate valve 11 can be arranged on the water inlet pipe 2, and the drain valve 10 is located between the gate valve 11 and the inner tank 1 . When needing to drain water from the drain valve 10 without stopping the water, at first close the gate valve 11 to ensure that the cold water in the cold water pipe 6 will not enter the drain valve 10, and then the vent valve 9 and the drain valve 10 are opened.

Wherein, the ventilation valve 9 is not limited to be arranged on the water outlet pipe 3, but also can be arranged on a position such as the top of the inner container 1, so as to provide an air intake passage for the inner container 1 when the drain valve 10 drains water.

Embodiment two:

This embodiment provides a closed electric water heater, the structure of which is basically the same as that of Embodiment 1, including an inner container and a water inlet pipe and an outlet pipe arranged on the inner container. The outlet of the cold water pipe is divided into two branches, and one branch is connected to The water inlet pipe, the other branch and the water outlet pipe are connected to the main water outlet pipe through the water regulating valve, the end of the main water outlet pipe is connected to the shower, and the water inlet pipe is provided with a safety valve. A ventilation valve is arranged on the water outlet pipe.

The difference is that the drain valve of this embodiment is arranged on the inner tank. For example, as shown in Figure 3, the drain valve 10 is installed on the bottom right side of the inner container 1, or as shown in Figure 4, the drain valve 10 is installed on the bottom left side of the inner container 1, or as shown in Figure 5, the The drain valve 10 is installed on the left head of the inner container 1 , or as shown in FIG. 6 , the drain valve 10 is installed on the right head of the inner container 1 .

In order to ensure the water quality of the water discharged by the drain valve 10 and prevent the dirt at the bottom of the inner tank 1 from being discharged, the water inlet of the drain valve 10 is set higher than the bottom of the inner tank 1 by a predetermined distance L2.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be construed as limiting the protection scope of the utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations of the present utility model without creative work, and these forms will all fall within the protection scope of the present utility model.

Claims (8)

1. A closed electric water heater, comprising an inner container (1) and an inlet pipe (2) and an outlet pipe (3) arranged on the inner container (1), the inlet pipe (2) is provided with a safety valve ( 4), characterized in that: it also includes a vent valve (9) and a drain valve (10) both connected to the inner tank (1), and the drain valve (10) is arranged on the inner tank (1) Or it is arranged on the water inlet pipe (2) and between the safety valve (4) and the inner tank (1). 2. A closed electric water heater according to claim 1, characterized in that: the inlet pipe (2) is provided with a gate valve (11), when the drain valve (10) is arranged on the inlet pipe (2) When it is up, the drain valve (10) is located between the gate valve (11) and the inner tank (1). 3. A closed electric water heater according to claim 1 or 2, characterized in that: the vent valve (9) is arranged on the water outlet pipe (3). 4. A closed electric water heater according to claim 1 or 2, characterized in that: the vent valve (9) is arranged on the top of the inner tank (1). 5. A closed electric water heater according to claim 1 or 2, characterized in that: the drain valve (10) is installed at the bottom of the inner tank (1) or at the bottom of the inner tank (1) on the header. 6. A closed electric water heater according to claim 5, characterized in that: the water inlet of the drain valve (10) is located higher than the bottom of the inner tank (1) by a preset distance. 7. A closed electric water heater according to claim 1 or 2, characterized in that: the drain valve (10) is set on the water inlet pipe (2), and the water inlet pipe (2) is located in the inner tank A plurality of liquid-diffusing holes (21) are opened on some pipelines in (1), and the liquid-diffusing hole (21) at the lowest position is set higher than the bottom of the liner (1) by a preset distance. 8. A closed electric water heater according to claim 1 or 2, characterized in that: an exhaust valve is arranged on the outlet pipe (3) or the top of the inner tank (1).