CN114484856A

CN114484856A - Heat storage type electric water heater

Info

Publication number: CN114484856A
Application number: CN202011267368.6A
Authority: CN
Inventors: 黄重景; 黄锦颖; 黄信铭; 黄信雄; 叶严仁
Original assignee: Grand Mate Co Ltd
Current assignee: Grand Mate Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2022-05-13

Abstract

A heat storage type electric water heater comprises a barrel body, a water inlet pipe, a water outlet pipe, a separating part and a heating device, wherein the barrel body is provided with a containing chamber; the water inlet pipe and the water outlet pipe are arranged on the barrel body; the separator is arranged in the containing chamber and divides the containing chamber into a first chamber and a second chamber, and the first chamber is communicated with the water inlet pipe and the water outlet pipe; the heating device is arranged in the second cavity and comprises a pipe body and an electric heating element, two ends of the pipe body are respectively communicated with the first cavity, and water in the first cavity can enter the pipe body; the electric heating element is arranged on the pipe wall of the pipe body, and heat energy generated by the electric heating element is transferred to the inside of the pipe body through the pipe wall of the pipe body so as to heat water in the inside of the pipe body. Thereby enhancing the effect of the hydrothermal convection in the first chamber.

Description

Heat storage type electric water heater

Technical Field

The invention relates to an electric water heater; in particular to a heat storage type electric water heater.

Background

The existing heat storage type electric water heater comprises a water storage barrel and an electric heating tube, a chamber for containing water is arranged in the water storage barrel, the water storage barrel is provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe is communicated with the water outlet pipe and the chamber. The electric heating tube is arranged in the water storage barrel, an electric heating wire is arranged in the electric heating tube, and after the electric heating wire is electrified, heat energy is transmitted into water through the shell of the electric heating tube to heat the water.

Because the hot water is continuously stored in the water storage barrel of the heat storage type electric water heater, a user can conveniently take the hot water at any time, and the convenience of life is improved. However, the electric heating tube of the conventional heat storage electric water heater is only soaked in water, and the water in the water storage tank is only left still, so that the heat convection effect is not good during the heating process, and therefore, the whole water can reach the set temperature after being heated for a long time. Therefore, the heating efficiency of the heat storage type electric water heater cannot be improved.

Disclosure of Invention

Accordingly, the present invention is directed to a heat storage type electric water heater, which can increase the effect of heat convection during the heating process.

In view of achieving the above object, the present invention provides a heat storage type electric water heater, comprising a barrel, a water inlet pipe, a water outlet pipe, a partition and a heating device, wherein the barrel has a chamber; the water inlet pipe and the water outlet pipe are respectively arranged on the barrel body; the separator is arranged on the barrel body and positioned in the accommodating chamber, the separator divides the accommodating chamber into a first chamber and a second chamber, and the first chamber is communicated with the water inlet pipe and the water outlet pipe and is used for accommodating water; the heating device is arranged in the second chamber and comprises a pipe body and an electric heating element, the pipe body is provided with a first end and a second end, the first end and the second end are respectively communicated with the first chamber, and water in the first chamber can enter the pipe body; the electric heating element is arranged on the pipe wall of the pipe body, and heat energy generated by the electric heating element is transferred to the inside of the pipe body through the pipe wall of the pipe body so as to heat water in the inside of the pipe body.

The invention has the advantages that the two ends of the tube body are communicated with the first cavity and the tube body is heated, so that the heat convection effect in the first cavity can be increased. The second chamber is located in the barrel body, so that the effect of utilizing the heat energy of the heating device can be achieved.

Drawings

Fig. 1 is a schematic view of a thermal storage electric water heater according to a first preferred embodiment of the present invention.

Fig. 2 is a schematic view of a heating device of a thermal storage electric water heater according to a first preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of a thermal storage electric water heater according to a second preferred embodiment of the present invention.

Fig. 4 is a schematic view of a heating device of a thermal storage electric water heater according to a third preferred embodiment of the invention.

Detailed Description

In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 1 and 2, a thermal storage electric water heater 1 according to a first preferred embodiment of the present invention includes a barrel 10, a partition 22 and a heating device 30, wherein:

the barrel 10 has a chamber 12 therein, a water inlet pipe 14 and a water outlet pipe 16 are disposed on the barrel body of the barrel 10, and the water inlet pipe 14 and the water outlet pipe 16 are communicated with the chamber 12. An outer shell 18 is arranged outside the barrel body 10, and a heat insulation material 20 is arranged between the outer shell 18 and the barrel body 10. A base 19 is provided at the bottom of the housing 18. The inlet pipe 14 and the outlet pipe 16 extend out of the housing 18. In this embodiment, the outlet pipe 16 is higher than the inlet pipe 14.

The partition 22 is disposed on the barrel 10 and located in the accommodating chamber 12, the partition 22 divides the accommodating chamber 12 into a first chamber 122 and a second chamber 124, and the first chamber 122 communicates with the water inlet pipe and the water outlet pipe 16. The water injected from the water inlet pipe 14 is contained in the first chamber 122. The volume of the first chamber 122 is greater than the volume of the second chamber 124, and the first chamber 122 surrounds the periphery of the second chamber 124.

The divider 22 has a top portion 24 and a body portion 26. The top end of the body 26 is connected to the top 24, the bottom end of the body 26 is an open end, and the periphery of the bottom end of the body 26 is connected to the bottom of the barrel 10. The partition 22 has a first surface 262 and a second surface 264 opposite to each other, the first surface 262 faces the first chamber 122, the second surface 264 faces the second chamber 124, and in this embodiment, the first surface 262 and the second surface 264 are located on the body portion 26. The bottom end of the body portion 26 is provided with a closure member 28.

The heating device 30 is disposed in the second chamber 124, the heating device 30 includes a tube 32 and an electric heating element 34, the tube 32 has a first end 322 and a second end 324, the first end 322 and the second end 324 are respectively communicated with the first chamber 122, so that water in the first chamber 122 can enter the tube 32, and water in the tube 32 can flow to the first chamber 122. The electric heating element 34 is disposed on the wall of the tube 32. The electric heating element 34 has an air space 38 between it and the second surface 264, in other words, the electric heating element 34 does not directly contact the water.

In this embodiment, the second end 324 of the tube 32 is located at a position higher than the first end 322, the first end 322 is communicated with the first chamber 122 through a connection tube 40, the connection tube 40 penetrates through the bottom of the barrel 10 and the closing member 28, and an inlet end 402 of the connection tube 40 is located lower than the inlet pipe 14. The second end 324 passes through the top of the partition 22 and communicates to the first chamber 122. The second end 324 is located between the outlet pipe 16 and the inlet pipe 14. A portion of the water injected from the water inlet pipe 14 flows into the pipe body 32 of the heating device 30 through the connection pipe 40 and overflows from the second end 324. The water level in the first chamber 122 is preferably higher than the second end 324.

In practice, a low water level detector 42 and a high water level detector 44 may be disposed in the first chamber 122, and the low water level detector 42 is higher than the outlet pipe 16. When the low water level detector 42 detects that the water level is lower than a first predetermined water level, an external water replenishing device (not shown) is triggered to inject water into the water inlet pipe 14 until the high water level detector 44 detects that the water level reaches a second predetermined water level, and the external water replenishing device stops replenishing water.

In the present embodiment, the tube 32 is made of an electrically insulating material, such as a quartz tube or a ceramic tube, and the electric heating element 34 includes a nano-carbon coating 342, and the nano-carbon coating 342 is coated on the wall of the tube 32, so as to increase the heating area. Two electrodes 344 are disposed on the nanocarbon coating 342, the two electrodes 344 are respectively connected to two power lines 36, and the two power lines 36 penetrate through the sealing member 28. The tube 32 isolates the nanocarbon coating 342 from the water inside the tube 32, so that the nanocarbon coating 342 can be prevented from contacting the water without causing any electric leakage.

When the two power lines 36 are energized, the electric heating element 34 generates heat energy, and the generated heat energy is transmitted to the inside of the tube 32 through the wall of the tube 32 to heat the water inside the tube 32. The water inside the pipe 32 is heated and then flows upward. Since the second end 324 of the tube 32 is closer to the outlet pipe 16 and the outlet pipe 16 is located higher than the inlet pipe 14, the temperature of the water above the second end 324 is higher, and the hotter water in the first chamber 122 flows downward by convection, forming a circulation without additional devices for assisting convection. Even if cold water is injected into the first chamber 122 through the inlet pipe 14, the cold water is brought into the pipe 32 and heated to form hot water. In other words, the tube 32 promotes the effect of the hydrothermal convection in the first chamber 122 during the heating process.

The heat energy of the electric heating element 34 can also be transferred to the first chamber 122 through the partition 22. In this embodiment, a heat conductive layer 46 is optionally disposed on the second surface 264, and the heat conductive layer 46 faces the electric heating element 34. Preferably, the heat conductive layer 46 is a nanocarbon coating. The ability of the electrical heating element 34 to conduct thermal energy to the partition 22 is increased by the thermally conductive layer 46, thereby efficiently utilizing the thermal energy of the electrical heating element 34. The sealing member 28 also prevents the heat energy in the second chamber 124 from being dissipated from the bottom.

Fig. 3 shows a thermal storage type electric water heater 2 according to a second preferred embodiment of the present invention, which has a structure substantially the same as that of the first embodiment, except that a connection pipe 48 connecting the first end 322 of the pipe 32 and the first chamber 122 is inserted through the body 26 of the partition 22. Thereby, the water in the first chamber 122 can be injected into the tube 32.

Fig. 4 shows a heating device 50 of a thermal storage electric water heater according to a third preferred embodiment of the present invention, which is different from the previous embodiments in that the electric heating element of the heating device 50 is an electric heating tube 52, and the electric heating tube 52 surrounds the tube 54 in a spiral manner, so as to increase the heating area. When the electrical heating tube 52 is energized, heat energy can be transmitted to the inside of the tube 54 through the wall of the tube 54 to heat the water inside the tube 54. The electrical heating tube 52 may include heating wires, and the tube 54 may be made of metal.

In one embodiment, the electrical heating tube 52 may also include an induction coil for heating the metal tube 54.

Accordingly, the heat-storage electric water heater of the present invention is communicated with the first chamber through the two ends of the tube, so as to increase the heat convection effect in the first chamber during the heating process. The second chamber is located in the barrel body, so that the effect of utilizing the heat energy of the heating device can be achieved. The electric heating element and water are isolated by the tube body, so as to achieve the purpose of avoiding electric leakage.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.

Description of the reference numerals

[ invention ]

1: heat storage type electric water heater

10: barrel body

12: containing chamber

122: the first chamber

124: second chamber

14: inlet pipe

16: water outlet pipe

18: outer casing

19: base seat

20: thermal insulation material

22: separator

24: top part

26: body part

262: first surface

264: second surface

28: closure member

30: heating device

32: pipe body

322: first end

324: second end

34: electric heating element

342: nanocarbon coating

344: electrode for electrochemical cell

36: power line

38: air space

40: connecting pipe

402: inlet end

42: low water level detector

44: high water level detector

46: heat conducting layer

2: heat storage type electric water heater

48: connecting pipe

50: heating device

52: electric heating tube

54: pipe body

Claims

1. A thermal storage electric water heater comprising:

a barrel body having a chamber;

the water inlet pipe and the water outlet pipe are respectively arranged on the barrel body;

the partition is arranged in the barrel body and positioned in the accommodating chamber, the accommodating chamber is divided into a first chamber and a second chamber by the partition, and the first chamber is communicated with the water inlet pipe and the water outlet pipe and is used for accommodating water;

at least one heating device arranged in the second chamber, wherein the heating device comprises a pipe body and an electric heating element, the pipe body is provided with a first end and a second end, the first end and the second end are respectively communicated with the first chamber, so that water in the first chamber can enter the inside of the pipe body; the electric heating element is arranged on the pipe wall of the pipe body, and heat energy generated by the electric heating element is transmitted to the inside of the pipe body through the pipe wall of the pipe body so as to heat water in the inside of the pipe body.

2. The thermal storage electric water heater of claim 1, wherein the tube is electrically insulating; the electric heating element comprises a nano carbon coating which is coated on the pipe wall of the pipe body.

3. The thermal electric water heater of claim 1, wherein the second end of the tube is located higher than the first end, and the first end is closer to the water inlet pipe than the second end.

4. The thermal storage electric water heater of claim 3, wherein the outlet pipe is located higher than the inlet pipe, and the second end is located between the outlet pipe and the inlet pipe.

5. The thermal electric water heater according to claim 3, wherein the first end is connected to the first chamber through a connecting pipe, and an inlet end of the connecting pipe is lower than the water inlet pipe.

6. The thermal electric water heater of claim 5, wherein the connecting tube is disposed through a bottom of the barrel.

7. The thermal electric water heater as recited in claim 5, wherein said connecting tube is threaded through said partition.

8. The thermal electric water heater of claim 1, wherein the partition has a first surface and a second surface opposite each other, the first surface facing the first chamber, the second surface facing the second chamber, and the second surface and the electric heating element having an air space therebetween.

9. The thermal electric water heater of claim 8, wherein heat energy of the electric heating element is transferred into the first chamber via the partition.

10. The thermal storage electric water heater of claim 9, wherein a heat conductive layer is disposed on the second surface, the heat conductive layer facing the electric heating element.

11. The thermal electric water heater of claim 10, wherein the thermally conductive layer is a nanocarbon coating.

12. The thermal storage electric water heater as recited in claim 1, wherein said partition member has a top portion and a body portion, the top end of said body portion is connected to said top portion, the bottom end of said body portion is an open end, the bottom end of said body portion is connected to the bottom of said barrel, and said second chamber is formed between said top portion and said body portion.

13. The thermal electric water heater as recited in claim 12, wherein a closure member is provided at a bottom end of said body portion.

14. The thermal electric water heater of claim 1, wherein the first chamber surrounds the second chamber at a periphery thereof.