Electric water heater that keeps the hot water at a preset temperature constantly

• US 7,570,877 B1
• Filed: 02/16/2007
• Issued: 08/04/2009
• Est. Priority Date: 02/16/2007
• Status: Expired due to Fees

• Current Assignee: Chao-Lin Huang
• Original Assignee: Chao-Lin Huang
• Inventors: Huang, Chao-Lin
• Primary Examiner(s): Campbell; Thor S
• Application Number:
  US11/707,779
• Time in Patent Office: 900 Days
• Field of Search: 392452-454
• US Class Current: 392/453
• CPC Class Codes: F24D 2220/042 Temperature sensors
• CPC Class Codes: F24D 2220/08 Storage tanks
• CPC Class Codes: F24D 2240/10 Placed within or inside of
• CPC Class Codes: F24H 1/202 with resistances
• CPC Class Codes: F24H 9/0015 in water channels
• CPC Class Codes: F24H 9/0021 Sleeves surrounding heating elements or heating pipes, e.g. pipes filled with heat transfer fluid, for guiding heated liquid
• CPC Class Codes: F24H 9/0094 having means for transporting the boiler
• CPC Class Codes: F24H 9/06 Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators space heating radiators F24D19/02
• CPC Class Codes: F24H 9/133 Storage heaters
• CPC Class Codes: F24H 9/16 Arrangements for water drainage

Abstract

An electric water heater includes a container, a cold water inlet pipe, a hot water outlet pipe, and a separation board. The separation board includes a first vertical plate having a first end connected to an upper portion of the container, a separation plate having a first end connected to a second end of the first vertical plate, and a second vertical plate having a first end connected to a second end of the separation plate and a second end connected to a lower portion of the container. Thus, the separation board divides the inside of the container into a heat storage space and an instantaneously heating space, so that the hot water from the hot water outlet pipe is kept at a preset temperature.

Claims

1. An electric water heater, comprising:

a container;

a cold water inlet pipe having a first end extended into the container and a second end protruded from the container;

a hot water outlet pipe having a first end extended into the container and a second end protruded from the container;

a separation board mounted in the container to divide an inside of the container into a heat storage space which is connected to the first end of the cold water inlet pipe and an instantaneously heating space which is connected to the first end of the hot water outlet pipe;

wherein the separation board includes a first vertical plate having a first end connected to an upper portion of the container, a separation plate having a first end connected to a second end of the first vertical plate, and a second vertical plate having a first end connected to a second end of the separation plate and a second end connected to a lower portion of the container;

the first vertical plate of the separation board is formed with a first conducting hole connected between the heat storage space and the instantaneously heating space of the container;

the instantaneously heating space of the container has an upper portion formed with a high temperature space located beside and connected to the first end of the hot water outlet pipe and the first conducting hole of the separation board.

2. The electric water heater in accordance with claim 1, wherein the separation board has a substantially Z-shaped cross-sectional profile.

3. The electric water heater in accordance with claim 1, wherein the second vertical plate of the separation board is formed with a second conducting hole connected between the heat storage space and the instantaneously heating space of the container.

4. The electric water heater in accordance with claim 1, wherein the container has a side provided with at least one hanging unit to hang the container.

5. The electric water heater in accordance with claim 1, wherein the heat storage space of the container has a distal end formed with a heat exchange space located beside and connected to the first end of the cold water inlet pipe.

6. The electric water heater in accordance with claim 1, wherein the lower portion of the container is provided with a drain hole.

7. The electric water heater in accordance with claim 3, further comprising an electric heating element mounted in the instantaneously heating space of the container and located beside the second conducting hole of the separation board.

8. The electric water heater in accordance with claim 7, further comprising a sensor mounted in the container and located beside the first end of the cold water inlet pipe.

9. The electric water heater in accordance with claim 8, wherein the electric heating element is electrically connected to the sensor.

10. The electric water heater in accordance with claim 5, wherein water is introduced from the cold water inlet pipe into the heat exchange space of the heat storage space of the container.

11. The electric water heater in accordance with claim 3, wherein water is filled with the heat storage space and the instantaneously heating space of the container through the first conducting hole and the second conducting hole of the separation board.

12. The electric water heater in accordance with claim 3, wherein heated water in the instantaneously heating space of the container is introduced through the first conducting hole and the second conducting hole of the separation board into the heat storage space of the container.

13. The electric water heater in accordance with claim 1, wherein heated water in the instantaneously heating space of the container is directed toward the high temperature space.

14. The electric water heater in accordance with claim 1, wherein heated water in the high temperature space of the instantaneously heating space of the container partially flows into the hot water outlet pipe and partially flows through the first conducting hole of the separation board into the heat storage space of the container.

15. The electric water heater in accordance with claim 1, wherein the first end of the cold water inlet pipe is extended through the lower portion of the container.

16. The electric water heater in accordance with claim 1, wherein the first end of the hot water outlet pipe is extended through the lower portion of the container.