Electric water heating device for heating and electric heating device

Abstract

The utility model relates to an electric water heating device for heating and an electric heating device, which comprise a bottom shell, a surface cover, a main control board, an instant electric water heating device, a water outlet pipe, a water outlet joint, a water flow sensor, a one-way valve, a three-way pipe fitting and a water drainage pipe, and the bottom shell is provided with a water outlet pipe hole, a water return pipe hole and a water drainage pipe hole; the water flow sensor comprises a main body, a magnetic rotor, a Hall sensor and a temperature sensor, the water outlet pipe is communicated with the instant electric water heating device, and the other end is connected with the water outlet joint which is fixed with the water outlet pipe hole; the water outlet end, the straight pipe of the three-way pipe fitting and the drainage pipe are connected in series, the drainage pipe is matched with the drainage pipe hole, and the water inlet end of the water flow sensor is matched with the water return pipe hole; a branch pipe of the three-way pipe fitting is communicated with the water return end of the instant heating type electric water heating device; the surface cover and the bottom shell are buckled and detachably matched. By arranging the one-way valve and the three-way pipe fitting, water in the electric water heating device for heating is conveniently discharged, and freezing prevention or water scale removal is achieved.

Description

Technical Field

[0001] This utility model relates to an electric water heating device, and more particularly to an electric water heating device for heating. Background Technology

[0002] The existing technology, Chinese patent 202420132361.0, describes a combined three-phase electric water heater, comprising a three-phase power supply, an electric water heater body, a main control board, and a casing. Each phase of the power supply has at least one electric water heater body, and the electric water heater body and the main control board are housed within the casing to form the main unit. To supply a large amount of hot water, several electric water heater bodies are connected in parallel. A problem exists: the electric water heater body cannot drain internal water. Utility Model Content

[0003] The purpose of this invention is to provide an electric hot water device for heating, which has the feature of draining accumulated water.

[0004] This utility model is implemented as follows: an electric water heater for heating, characterized in that it includes a bottom shell with a front opening, a front cover, a main control board, an instant electric water heater, a water outlet pipe and a water outlet connector, a water flow sensor, a one-way valve, a tee fitting, and a drain pipe.

[0005] The bottom shell has an outlet pipe hole and a return pipe hole on one side, and a drain pipe hole on the other side.

[0006] The water flow sensor includes a main body, a magnetic rotor, a Hall sensor, and a temperature sensor.

[0007] The instant electric water heater is located inside the bottom shell. One end of the outlet pipe is connected to the instant electric water heater, and the other end is connected to the outlet connector, which is fixed to the outlet pipe hole. The one-way valve is located inside the outlet end of the water flow sensor. The outlet end, the straight pipe of the tee fitting, and the drain pipe are connected in series. The drain pipe is fitted through the drain pipe hole. The inlet end of the water flow sensor is fitted through the return pipe hole. The branch pipe of the tee fitting is connected to the return end of the instant electric water heater. The front opening of the cover and the bottom shell are fastened together and disassembled.

[0008] The electric water heater for heating is characterized in that: the main body is provided with a heat exchange boss, and the main control board is provided with a thyristor, which is attached to the heat exchange boss.

[0009] An electric heating device, characterized in that it includes a base, an outlet water pipe, a return water pipe, and several electric water heaters for heating as described above.

[0010] The top and bottom of the frame are respectively fixed grooves and lower fixing grooves;

[0011] The electric water heater for heating is fitted into the upper and lower fixed slots and is detachably matched with the base. The water outlet connector is connected to the water outlet pipe, and the water inlet of the water flow sensor is connected to the water return pipe.

[0012] The electric heating device described above is characterized in that: the frame includes a top frame, a top seat plate, a support frame, and a base plate.

[0013] The top plate is provided with several upper fixing grooves, and the base plate is provided with several lower fixing grooves; the upper and lower ends of the side wall plate on the side of the bottom shell with the drain pipe hole are respectively provided with fixing plates;

[0014] The top plate and the base plate are fixed to the top frame and the support frame, respectively. The electric water heater for heating is fitted into the upper and lower fixing grooves. The fixing plate is fixed to the top frame and the support frame with screws.

[0015] The electric heating device described above is characterized in that it also includes a shut-off valve.

[0016] A shut-off valve is provided between the water outlet connector and the water outlet guide pipe, and a shut-off valve is provided between the water inlet end and the water return guide pipe.

[0017] The drain pipe is equipped with a shut-off valve.

[0018] The electric heating device described above is characterized in that it also includes a base frame, on which the device is supported.

[0019] The electric heating device is characterized in that a water filter is provided between the water inlet end of the water flow sensor and the return water pipe.

[0020] The electric heating device described above is characterized in that it also includes a buffer water tank and a water pump.

[0021] The water outlet pipe, buffer tank, and water pump are connected in series.

[0022] The electric heating device described above is characterized in that the base and the buffer water tank are arranged vertically.

[0023] It also includes elbows, straight water pipes, right-angle water pipes, and return water pipes.

[0024] The elbow includes a bent body, connecting pipe cavities at both ends, and an annular sealing ring cavity on the connecting pipe cavity. The diameter of the end of the bent body is smaller than the diameter of the connecting pipe cavity. The annular sealing ring cavity has a semi-circular cross-section and is equipped with an O-ring.

[0025] The water outlet pipe is inserted into the connecting cavity of a bend and secured with hydraulic clamps. One end of the straight water outlet pipe is inserted into the connecting cavity of another bend, and the other end of the straight water outlet pipe is inserted into the connecting cavity of another bend. The connecting cavities and the straight water outlet pipe are secured with hydraulic clamps. One end of the right-angled water outlet pipe is connected to the buffer water tank, and the other end is inserted into the connecting cavity of another bend. The connecting cavity and the right-angled water outlet pipe are secured with hydraulic clamps.

[0026] The electric heating device described above is characterized in that the water pump is located on one side of the buffer water tank;

[0027] It also includes right-angle bends for water drainage and fittings.

[0028] The fitting includes a middle pipe body, fitting cavities at both ends, and an annular sealing cavity on the fitting cavity. The annular sealing cavity has a semi-circular cross-section and is equipped with an O-ring.

[0029] One end of a water-guiding right-angle bend is connected to and fixed to the end of the buffer water tank, and the other end is inserted into a connector tube cavity. Another water-guiding right-angle bend is inserted into another connector tube cavity. The connector tube cavity and the water-guiding right-angle bend are fixed with hydraulic clamps.

[0030] This utility model discloses an electric water heater for heating, which, by setting a one-way valve and a three-way fitting, enables convenient drainage of water from the electric water heater for heating, thereby preventing freezing or removing scale. Attached Figure Description

[0031] Figure 1 This is one of the perspective views of this utility model.

[0032] Figure 2 This is the second perspective view of this utility model.

[0033] Figure 3 This is one of the exploded perspective views of this utility model.

[0034] Figure 4 This is a partial exploded perspective view of this utility model.

[0035] Figure 5 This is one of the perspective views of the second embodiment of this utility model.

[0036] Figure 6 This is the second perspective view of the second embodiment of this utility model.

[0037] Figure 7 This is one of the exploded perspective views of the second embodiment of this utility model.

[0038] Figure 8 This is the second exploded perspective view of the second embodiment of this utility model.

[0039] Figure 9 This is the third perspective view of the second embodiment of this utility model.

[0040] Figure 10 This is the fourth perspective view of the second embodiment of this utility model.

[0041] Figure 11 This is a cross-sectional view of the elbow according to the third embodiment of this utility model.

[0042] Figure 12 This is a cross-sectional view of the connector fitting according to the third embodiment of this utility model. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Example 1

[0046] like Figure 1 , Figure 3 As shown, an electric water heater 1 for heating includes a bottom shell 1A with a front opening, a front cover 1B, a main control board, an instant electric water heater 2, a water outlet pipe 2A and a water outlet connector 2B, a water flow sensor 3, a one-way valve 4, a tee fitting 5, and a drain pipe 6.

[0047] The bottom shell 1A has an outlet pipe hole (unmarked) and a return pipe hole on one side, and a drain pipe hole on the other side at the bottom.

[0048] The water flow sensor 3 includes a main body 3A, a magnetic rotor, a Hall sensor and a temperature sensor. The main body 31 includes an inlet connector, a rotor cavity and an outlet connector. The water flow sensor 3 is a known technology and is only briefly described here.

[0049] Instantaneous electric water heater 2, such as Chinese Patent 201320719504.X, utility model name: an electric heater in an electric water heater that can be installed in all directions; Chinese Patent 201922029487.7, utility model name: an electric insulated instantaneous heating element.

[0050] The instant electric water heater 2 is located inside the bottom shell 1A. One end of the outlet pipe 2A is connected to the instant electric water heater 2, and the other end is connected to the outlet connector 2B, which is fixed to the outlet pipe hole. The one-way valve 4 is located inside the outlet end of the water flow sensor 3. The outlet end of the water flow sensor 3, the straight pipe of the tee fitting 5, and the drain pipe 6 are connected in series. The drain pipe 6 is matched with the drain pipe hole, or in other words, it extends out of the bottom shell from the drain pipe hole. The inlet end of the water flow sensor 3 is matched with the return pipe hole. The branch pipe of the tee fitting 5 is connected to the return end of the instant electric water heater 2. The front opening of the cover 1B is fastened and disassembled with the bottom shell 1A. The open end of the bottom shell is inserted into the cover 1B and fixed with screws.

[0051] This structure facilitates the evacuation of the instant electric water heater 2, especially for winter evacuation to prevent freezing, and also allows for backflushing. The one-way valve prevents water from the return pipe from flowing out through the main body and tee fittings when the instant electric water heater 2 is evacuated. This one-way valve does not prevent water from flowing out of the return pipe. Its main function is to prevent water inside the instant electric heating device from flowing back through the return pipe during water outages, thus preventing dry burning of the empty pipe.

[0052] As a further improvement of this utility model: a heat exchange boss is provided on the main body, and a thyristor is provided on the main control board, with the thyristor attached to the heat exchange boss. This is for heat dissipation of the thyristor, extending its service life.

[0053] Example 4

[0054] like Figure 5 , Figure 6 , Figure 9 , Figure 10 As shown, an electric heating device includes a base, an outlet water pipe 8, a return water pipe 9, and several electric water heaters 1 as described above.

[0055] The top and bottom of the bracket are respectively fixed groove 711 and lower fixed groove 712;

[0056] The electric water heater 1 for heating is fitted into the upper fixing slot 711 and the lower fixing slot 712 and is detachably connected to the base. The water outlet connector 2B is connected to the water outlet pipe 8, and the water inlet of the water flow sensor 3 is connected to the water return pipe 9. With this structure, the electric water heaters 1 for heating are connected in parallel, and the number of electric water heaters 1 for heating is determined by the heating area.

[0057] As a further improvement of this utility model: the seat 7 includes a top frame 72, a top seat plate 73, a support frame 74, and a base plate 75.

[0058] The top plate 73 is provided with several upper fixing grooves 711, and the base plate 75 is provided with several lower fixing grooves 712; the upper and lower ends of the side wall plate of the bottom shell 1A with the drain pipe hole are respectively provided with fixing plates 1A1;

[0059] The top plate 73 and the base plate 75 are fixed to the top frame 72 and the support frame 74 respectively, and the electric water heater 1 for heating is fitted into the upper fixing groove and the lower fixing groove; the fixing plate 1 is fixed to the top frame 72 and the support frame 74 with screws.

[0060] It also includes a water filter 19, which is located between the inlet of the water flow sensor 3 and the return water pipe 9. The main function of the water filter is to facilitate the filtration and cleaning of debris and particles in the return water, and to protect the water flow sensor.

[0061] As a further improvement of this utility model, it also includes a shut-off valve 10.

[0062] A shut-off valve 10 is provided between the water outlet connector 2B and the water outlet guide pipe 8, and a shut-off valve 10 is provided between the water inlet end of the water flow sensor 3 and the return water guide pipe 9; a water filter is provided between the water inlet end of the water flow sensor 3 and the shut-off valve 10.

[0063] The drain pipe 6 is equipped with a shut-off valve 10.

[0064] As a further improvement of this utility model, it also includes a base frame 76, on which the support frame 74 is disposed.

[0065] As a further improvement of this utility model, it also includes a buffer water tank 11 and a water pump 12.

[0066] The water outlet pipe 8, the buffer tank 11, and the water pump 12 are connected in series.

[0067] The support frame and the buffer water tank 11 are arranged vertically;

[0068] It also includes elbow 13, straight water pipe 14, right-angled water pipe 15, and return water pipe 16.

[0069] The elbow 13 includes a bent body portion 131, connecting pipe cavities 132 at both ends, and an annular sealing ring cavity 134 on the connecting pipe cavity. The diameter of the end of the bent body portion 131 is smaller than the diameter of the connecting pipe cavity 132. The annular sealing ring cavity 134 has a semi-circular cross-section and is provided with an O-ring.

[0070] The outlet water pipe 8 is inserted into the connecting cavity 132 of a bend 13 and secured with hydraulic clamps. One end of the straight water pipe 14 is inserted into the other connecting cavity 132 of a bend 13, and the other end of the straight water pipe 14 is inserted into the connecting cavity 132 of another bend 13. The connecting cavity 132 and the straight water pipe 14 are secured with hydraulic clamps. One end of the right-angled water pipe 15 is connected to the buffer water tank 11, and the other end is inserted into the connecting cavity 132 of another bend 13. The connecting cavity 132 and the right-angled water pipe 15 are secured with hydraulic clamps. The return water pipe 16 and the return water pipe 9 are respectively inserted into the connecting cavity 132 of a bend 13 and secured with hydraulic clamps.

[0071] With this structure, the distance between the elbows can be adjusted by adjusting the length of the straight water pipe 14 extending into the connecting pipe cavity 132, making installation convenient.

[0072] As a further improvement of this utility model: the water pump 12 is located on one side of the buffer water tank 11;

[0073] It also includes a right-angle bend in the water guide pipe 17 and a connector fitting 18.

[0074] The connector fitting 18 includes a middle pipe body 181, connector cavities 182 located at both ends, and an annular sealing cavity 183 provided on the connector cavity. The annular sealing cavity 183 has a semi-circular cross-section and is provided with an O-ring.

[0075] One end of a water-guiding right-angle bend 17 is connected to and fixed to the end of the buffer water tank 11, and the other end is inserted into a connector cavity 182. Another water-guiding right-angle bend 17 is inserted into another connector cavity 182. The connector cavity 182 and the water-guiding right-angle bend 17 are fixed with hydraulic clamps.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric water heater for heating, characterized in that: Includes a front-opening bottom shell, front cover, main control board, instant electric water heater, outlet pipe and outlet connector, water flow sensor, check valve, tee fittings and drain pipe. The bottom shell has an outlet pipe hole and a return pipe hole on one side, and a drain pipe hole on the other side. The water flow sensor includes a main body, a magnetic rotor, a Hall sensor, and a temperature sensor. The instant electric water heater is located inside the bottom shell. One end of the outlet pipe is connected to the instant electric water heater, and the other end is connected to the outlet connector, which is fixed to the outlet pipe hole. The one-way valve is located inside the outlet end of the water flow sensor. The outlet end, the straight pipe of the tee fitting, and the drain pipe are connected in series. The drain pipe is matched with the drain pipe hole. The inlet end of the water flow sensor is matched with the return pipe hole. The branch pipe of the tee fitting is connected to the return end of the instant electric water heater. The front opening of the cover and the bottom shell are fastened together and disassembled.

2. The electric water heater for heating according to claim 1, characterized in that: The main body is provided with a heat exchange boss, and the main control board is provided with a thyristor, which is attached to the heat exchange boss.

3. An electric heating device, characterized in that: It includes a base, an outlet water pipe, a return water pipe, and several electric water heaters for heating as described in any one of claims 1-2. The top and bottom of the frame are respectively fixed grooves and lower fixing grooves; The electric water heater for heating is fitted into the upper and lower fixed slots and is detachably matched with the base. The water outlet connector is connected to the water outlet pipe, and the water inlet of the water flow sensor is connected to the water return pipe.

4. An electric heating device according to claim 3, characterized in that: The frame includes a top frame, a top seat plate, a support frame, and a base plate. The top plate is provided with several upper fixing grooves, and the base plate is provided with several lower fixing grooves; the upper and lower ends of the side wall plate on the side of the bottom shell with the drain pipe hole are respectively provided with fixing plates; The top plate and the base plate are fixed to the top frame and the support frame, respectively. The electric water heater for heating is fitted into the upper and lower fixing grooves. The fixing plate is fixed to the top frame and the support frame with screws.

5. An electric heating device according to claim 3, characterized in that: It also includes a shut-off valve. A shut-off valve is provided between the water outlet connector and the water outlet guide pipe, and a shut-off valve is provided between the water inlet end and the water return guide pipe. The drain pipe is equipped with a shut-off valve.

6. An electric heating device according to claim 3, characterized in that: It also includes a base frame, on which the support is mounted.

7. An electric heating device according to claim 3, characterized in that: A water filter is installed between the water inlet of the water flow sensor and the return water pipe.

8. An electric heating device according to claim 3, 4, 5, 6 or 7, characterized in that: It also includes a buffer tank and a water pump. The water outlet pipe, buffer tank, and water pump are connected in series.

9. An electric heating device according to claim 8, characterized in that: The support frame and the buffer water tank are arranged vertically. It also includes elbows, straight water pipes, right-angle water pipes, and return water pipes. The elbow includes a bent body, connecting pipe cavities at both ends, and an annular sealing ring cavity on the connecting pipe cavity. The diameter of the end of the bent body is smaller than the diameter of the connecting pipe cavity. The annular sealing ring cavity has a semi-circular cross-section and is provided with an O-ring. The outlet water pipe is inserted into the connecting cavity of a bend and secured with hydraulic clamps. One end of the straight water pipe is inserted into the connecting cavity of another bend, and the other end of the straight water pipe is inserted into the connecting cavity of another bend. The connecting cavities and the straight water pipe are secured with hydraulic clamps. One end of the right-angled water pipe is connected to the buffer water tank, and the other end is inserted into the connecting cavity of another bend. The connecting cavity and the right-angled water pipe are secured with hydraulic clamps. The return water conduit and the return water pipe are respectively inserted into the connecting cavities of a bend and secured with hydraulic clamps.

10. An electric heating device according to claim 8, characterized in that: The water pump is located on one side of the buffer tank; It also includes right-angle bends for water drainage and fittings. The fitting includes a middle pipe body, fitting cavities at both ends, and an annular sealing cavity on the fitting cavity. The annular sealing cavity has a semi-circular cross-section and is equipped with an O-ring. One end of a water-guiding right-angle bend is connected to and fixed to the end of the buffer water tank, and the other end is inserted into a connector tube cavity. Another water-guiding right-angle bend is inserted into another connector tube cavity. The connector tube cavity and the water-guiding right-angle bend are fixed with hydraulic clamps.

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