JP3180626B2 - Electric water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for boiling a liquid to keep it warm.

[0002]

2. Description of the Related Art A spout of a discharge pipe of heated water in a conventional electric water heater has a substantially cylindrical single-layer structure as a main structure, and has a notch or a rib as an additional shape.

[0003] Hereinafter, a discharge pipe in a conventional electric water heater will be described. FIG. 3 shows a configuration of a discharge pipe in a conventional electric water heater. In FIG. 3, reference numeral 1 denotes a substantially cylindrical container for storing the liquid 2. 3
Is a heating device for heating the liquid 2 in the container 1. 4
Is a discharge pipe connected to an outlet 5 on the bottom surface of the container 1 via a water rising pipe 6. The outlet 5 and the rising pipe 6 are connected by a U-shaped packing 7, and the rising pipe 6 and the discharge pipe 4 are connected by an S-shaped packing 8. A check valve 9 is built in an inflow port 4-A (shown by a circle in FIG. 3) of the discharge pipe 4, and a spout 4-B (FIG. 3).
Are shown with a circle 10), a rib 10 is provided. Reference numeral 11 denotes a control circuit, which is a signal from a temperature sensing element 12 provided at a substantially lower center of the bottom of the container 1 and energizes a heating device 3 formed by a heater provided at the bottom of the container 1. Control. Reference numeral 13 denotes a lid that covers the upper part of the container 1, and has a built-in air pump 15 operated by the operating body 14. The lid 13 can be pivotally opened about the hinge part 17 by operating the lock knob 16 to inject the liquid 2 into the container 1.

In the above configuration, first, the lid 13 is opened and the liquid 2 is poured into the container 1, and then heated by the heating device 3. When the temperature of the liquid 2 reaches an appropriate temperature, the temperature detecting element 12 detects the temperature of the bottom surface of the container 1, and the control circuit 11 stops supplying power to the heating device 3 by the signal. The control circuit 11 controls the energization and cutoff of the heating device 3 based on the signal of the temperature detection element 12 to maintain the temperature of the liquid 2 at an appropriate temperature. When desired, the operating body 14 is operated to discharge the liquid 2 in the container 1. When the air pump 15 is operated by the operating body 14, the internal pressure of the container 1 is increased, and the liquid 2 in the container 1 is discharged through the rising pipe 6 and the discharge pipe 4.

[0005]

However, in the above-mentioned conventional configuration, after the end of the discharge, the inflow portion 4 of the discharge pipe 4 is closed.
A small amount of liquid 2 that cannot return to the A side
When the remaining liquid 2 drops from the pouring port 4-B side of the discharge pipe 4 or discharges, the liquid 2 may be affected by the notch provided in the pouring port 4-B. As a result, there is a problem that a turbulent flow state is caused and the liquid 2 sometimes scatters.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an electric water heater in which the discharge state of the heated water is good, the liquid does not scatter, and the safety in the discharge operation is improved. And

[0007]

In order to achieve the above object, the present invention provides a container for containing a liquid, a heating device for heating the liquid in the container, and a heater provided near the bottom of the container or a lower portion of the side of the container. Having an outlet, a water supply device, and a discharge pipe connected to the outlet via a water rising pipe, and a spout of the discharge pipe is formed in a substantially cylindrical shape concentric with an outer discharge pipe and an inner discharge pipe. And a cutout is formed in the inside discharge pipe.

[0008]

In the structure of the present invention, a cutout is provided in the discharge pipe inside the spout of the discharge pipe,
No liquid remains in the discharge pipe after the discharge is completed. Further, since the spout of the discharge pipe has a two-layer structure of concentric and substantially cylindrical shape, even when the liquid at the time of discharge becomes turbulent due to the effect of the notch provided in the inner discharge pipe, the outer discharge is prevented. There is no splashing of the liquid in the pipe.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings. The same names and numbers are used for the same shapes and the same functional members as in the conventional example.
That is, the liquid 2, the discharge pipe 4, the inflow port 4-A, the spout 4-B, the S-shaped packing 8, and the check valve 9 have the same name and the same symbol.

In FIG. 1 and FIG. 2, a spout 4-B (shown by a circle in FIG. 1) of the discharge pipe 4 has a concentric, substantially cylindrical two-layer structure and has an inner discharge pipe 4-Ba. The outer discharge pipe 4-Bb and the inner discharge pipe 4-Ba are integrally formed.

In the above configuration, the boiling operation and the discharge operation are the same as in the conventional example, and will not be described. After dispensing,
Due to the notch 18 provided in the inner discharge pipe 4-Ba, the liquid 2 which has tended to remain in the discharge pipe 4 returns to the inflow port 4-A (portion indicated by a circle in FIG. 1).
Further, since the spout 4-B of the discharge pipe 4 has a concentric and substantially cylindrical two-layer structure, the liquid 2 at the time of discharge is turbulent under the influence of the notch 18 provided in the inner discharge pipe 4-Ba. Even in the case of being in the state, it is pushed back again by the outer discharge pipe 4-Bb.

As described above, according to the present embodiment, the spout 4-B of the discharge pipe 4 has a concentric and substantially cylindrical two-layer structure, and has the notch 18 in the inner discharge pipe 4-Ba. The outer discharge pipe 4-Bb and the inner discharge pipe 4-Ba
By integrally forming the water heater and the heater, it is possible to realize an electric water heater that produces an excellent discharge state of the heated water and that has no scattering of the heated water and improves safety in the discharge operation.

[0013]

As is apparent from the above description, the present invention relates to a container for containing a liquid, a heating device for heating the liquid in the container, and an outlet provided near the bottom of the container or the lower part of the side of the container. And a water supply device, and a discharge pipe connected to the outlet via a water rising pipe, and a spout of the discharge pipe is formed of two concentric substantially cylindrical layers of an outer discharge pipe and an inner discharge pipe. By forming the cutout integrally with the inner discharge pipe and providing a cutout in the inner discharge pipe, it is possible to realize an electric water heater that produces an excellent discharge state of the heated water and improves safety in the discharge operation.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an electric water heater according to one embodiment of the present invention.

FIG. 2 is a schematic view showing a cutout of an inner discharge pipe of an electric water heater according to an embodiment of the present invention.

FIG. 3 is a schematic sectional view of an electric water heater showing a conventional example.

[Explanation of symbols]

 2 Liquid 4 Discharge pipe 4-A Inlet 4-B Spout 4-Ba Inside discharge pipe 4-Bb Outside discharge pipe 8 S-shaped packing 9 Check valve 18 Notch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-1977211 (JP, A) JP-A-5-89257 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 27/21 101

Claims (1)

(57) [Claims] 1. A container for accommodating a liquid, a heating device for heating the liquid in the container, an outlet provided near a lower portion of a bottom or a side of the container, a water supply device, and a water rising to the outlet. A discharge pipe connected via a pipe, wherein a spout of the discharge pipe is integrally formed with a concentric substantially cylindrical two-layer structure of an outer discharge pipe and an inner discharge pipe; An electric water heater with a notch on the bottom.