Electric water heater

Abstract

The utility model relates to the field of heating equipment, in particular to an electric water heater. Comprising a shell, an electric heating body, a temperature controller, an electric control board, a display board and a silicon controlled rectifier are arranged in the shell, and the temperature controller is arranged on the electric heating body; the electric control board is connected with a power supply; a relay is arranged on the electric control board, and the input end of the relay is sequentially connected with a temperature controller and a power supply; the output end of the relay is sequentially connected with the electric heating body and the thyristor; the water inlet end of the electric heater is connected with a water inlet pipe; the water outlet end of the electric heater is connected with a water outlet pipe; at least one filter is installed on the water inlet pipe, and the filter partially extends out of the shell so that the filter can be disassembled and assembled from the outside of the shell. By optimizing the layout in the electric water heater, the filter is semi-embedded in the electric water heater, the problems that a pre-filter is large in size and large in occupied space are solved, the semi-embedded filter cup can be replaced from the outside of the electric water heater by turning off a water inlet valve, and the problem that the pre-filter is not easy to replace is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating equipment, specifically to an electric water heater. BACKGROUND

[0002] The prior art, Chinese patent 202220282854.3, a long-life high-stability instant electric water heater, comprises an instant electric water heater body, a water inlet pipe is fixed at the bottom of the instant electric water heater body, a first valve is arranged on the water inlet pipe, a filter box is fixed at the end of the water inlet pipe, a filter assembly is arranged in the filter box, a connecting pipe is fixed at the bottom of the filter box, and a water outlet pipe is fixed at the bottom of the instant electric water heater body on one side of the water inlet pipe. The problem is that the filter box is external, large in volume, and occupies a large space for packaging and transportation. SUMMARY

[0003] The utility model aims at providing a water filter semi-embedded electric water heater, which has the characteristics of small volume and convenient disassembly and assembly of the water filter.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of an electric water heater, which comprises a shell, an electric heating body, a temperature controller, an electric control board, a display board, and a silicon controlled rectifier arranged in the shell, and the temperature controller is arranged on the electric heating body;

[0005] The electric control board is connected with a power supply, a relay is arranged on the electric control board, the input end of the relay is connected with the temperature controller and the power supply in sequence, and the output end of the relay is connected with the electric heating body and the silicon controlled rectifier in sequence;

[0006] The water inlet end of the electric heating body is connected with a water inlet pipe;

[0007] The water outlet end of the electric heating body is connected with a water outlet pipe;

[0008] At least one filter is mounted on the water inlet pipe, the filter partially extends from the shell, so that the filter can be disassembled and assembled from the outside of the shell.

[0009] Further, a water flow sensor is mounted on the water inlet pipe at the water outlet end of the filter.

[0010] Further, the electric control board is electrically connected with the display board and the water flow sensor respectively.

[0011] Further, an anti-electricity wall is mounted on the water outlet pipe.

[0012] Further, the filter extends from the side surface of the shell where the water inlet pipe joint is located, and the bottom surface of the filter and the end surface of the water inlet pipe joint are in the same plane.

[0013] Further, the water outlet pipe joint and the water inlet pipe joint are on the same side of the shell, and the end faces of the water outlet pipe joint and the water inlet pipe joint are in the same plane.

[0014] Further, the filter is internally filled with granular filtering material.

[0015] Further, a tee joint is mounted on the water inlet pipe, and the filter is threadedly connected with the tee joint.

[0016] Further, mounting ear holes are arranged on both sides of the tee joint, and the tee joint is fixed in the shell through the mounting ear holes.

[0017] Compared with the prior art, the beneficial effects of the electric water heater are as follows: by optimizing the internal layout of the electric water heater, the filter is semi-embedded in the electric water heater, the problems of large volume and large space occupation of the front filter are solved, the filter cup is semi-embedded, the water inlet valve is turned off, the filter cup can be replaced from the outside of the electric water heater, and the problem of difficult replacement of the front filter is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model provides an internal structure schematic diagram of electric water heater;

[0019] Among them: shell 1, electric heating body 2, temperature controller 3, electric control board 4, display board 5, thyristor 6, relay 7, filter 8, water inlet pipe 9, water outlet pipe 10, water flow sensor 11, anti-electricity wall 12, water inlet pipe joint 13, water outlet pipe joint 14, tee joint 15, mounting ear hole 16. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] As Figure 1 shown, the embodiment provides an electric water heater, which comprises a shell 1, and the shell 1 is internally provided with an electric heating body 2, a temperature controller 3, an electric control board 4, a display board 5 and a thyristor 6; the electric heating body 2 adopts an instant heating type electric heating body 2, and the electric heating body 2 is provided with the temperature controller 3; the shell 1 comprises a front half shell and a rear half shell, and after the internal components are installed, the front half shell and the rear half shell are fixed together;

[0022] The control board 4 is connected to the power supply; the control board 4 is equipped with a relay 7, the input terminal of the relay 7 is connected to the thermostat 3 and the power supply in sequence; the output terminal of the relay 7 is connected to the electric heating element 2 and the thyristor 6 in sequence; the electrical connection method of each component inside the electric water heater is a conventional method in this field and will not be described in detail here.

[0023] The water inlet end of the electric heating element 2 is connected to the water inlet pipe 9;

[0024] The water outlet end of the electric heating element 2 is connected to the water outlet pipe 10;

[0025] The filter 8 is installed on the inlet pipe 9 in a semi-embedded manner, with part of the filter 8 protruding from the housing 1, so that the filter 8 can be installed and removed from the outside of the housing 1. In this embodiment, the filter 8 is in the form of a filter cup, and the inside of the filter cup is filled with granular filter material, which does not block water or absorb water, and does not require an additional pump, only tap water pressure is needed to work. In this embodiment, the filter 8 is installed with one filter element, and the filter 8 can be removed for replacement. However, the electric water heater of this application is not limited to this. Different numbers of filters 8 can be installed for different specifications of electric water heaters.

[0026] In another embodiment of this application, a water flow sensor 11 is installed on the water inlet pipe 9 at the outlet of the filter 8. The electronic control board 4 is electrically connected to the display board 5 and the water flow sensor 11 respectively. The display board 5 can display the water temperature and water flow rate. When the water flow rate decreases to a certain extent, the filter 8 or filter element needs to be replaced.

[0027] In another embodiment of this application, an anti-electric shock wall 12 is installed on the water outlet pipe 10. The anti-electric shock wall 12 can extend the water path, attenuate the current in the water, and prevent electric shock.

[0028] In another embodiment of this application, different installation scenarios may have different requirements for the position of the filter 8. However, in this embodiment, the filter 8 extends from the side of the housing 1 where the water inlet pipe connector 13 is located, and the bottom surface of the filter 8 is on the same plane as the end face of the water inlet pipe connector 13, without taking up extra space, which is fundamentally different from the pre-filter.

[0029] In a preferred embodiment, the outlet pipe connector 14 and the inlet pipe connector 13 are on the same side of the housing 1, and the end faces of the outlet pipe connector 14 and the inlet pipe connector 13 are on the same plane.

[0030] In another embodiment of this application, a three-way connector 15 is installed on the water inlet pipe 9, and the filter 8 is threadedly connected to the three-way connector 15. The filter 8 can be removed from the three-way connector 15 by rotating it outside the housing 1, and can be easily replaced.

[0031] In another embodiment of the present application, the tee joint 15 is provided with mounting ear holes 16 on both sides for fixing the tee joint 15 in the housing 1 to prevent displacement of the tee joint 15 due to replacement of the filter 8.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric water heater, characterized in that: Includes a housing (1), inside which are provided an electric heating element (2), a temperature controller (3), an electric control board (4), a display board (5) and a thyristor (6), and the electric heating element (2) is provided with a temperature controller (3); The control board (4) is connected to the power supply; the control board (4) is equipped with a relay (7), the input terminal of the relay (7) is connected to the temperature controller (3) and the power supply in sequence; the output terminal of the relay (7) is connected to the electric heating element (2) and the thyristor (6) in sequence; The water inlet end of the electric heating element (2) is connected to the water inlet pipe (9); The water outlet end of the electric heating element (2) is connected to the water outlet pipe (10); At least one filter (8) is installed on the water inlet pipe (9), and part of the filter (8) extends out of the housing (1), so that the filter (8) can be installed and removed from the outside of the housing (1).

2. The electric water heater according to claim 1, characterized in that: A water flow sensor (11) is installed on the water inlet pipe (9) at the outlet end of the filter (8).

3. The electric water heater according to claim 2, characterized in that: The electronic control board (4) is electrically connected to the display board (5) and the water flow sensor (11) respectively.

4. The electric water heater according to claim 1, characterized in that: An anti-electric shock wall (12) is installed on the water outlet pipe (10).

5. The electric water heater according to claim 1, characterized in that: The filter (8) extends from the side of the housing (1) where the water inlet pipe joint (13) is located, and the bottom surface of the filter (8) is on the same plane as the end face of the water inlet pipe joint (13).

6. The electric water heater according to claim 5, characterized in that: The outlet pipe connector (14) and the inlet pipe connector (13) of the outlet pipe (10) are on the same side of the housing (1), and the end faces of the outlet pipe connector (14) and the inlet pipe connector (13) are on the same plane.

7. The electric water heater according to claim 1, characterized in that: The filter (8) is filled with granular filter material.

8. The electric water heater according to claim 1, characterized in that: A three-way connector (15) is installed on the water inlet pipe (9), and the filter (8) is threadedly connected to the three-way connector (15).

9. The electric water heater according to claim 8, characterized in that: The three-way connector (15) has mounting ears (16) on both sides for fixing the three-way connector (15) inside the housing (1).

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