JP3259689B2 - 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 heating and keeping a liquid contained in a container, and leading the liquid to the outside of a main body.

[0002]

2. Description of the Related Art Conventionally, an electric water heater of this kind is as shown in FIG. Hereinafter, the structure of the conventional electric kettle will be described in detail. In FIG. 5, reference numeral 1 denotes a body constituting an outer shell, which contains a container 3 for containing the liquid 2. 4
Is a spout placed on the upper part of the body 1 and the container 3 is placed on the central opening. Reference numeral 5 denotes a heating element for heating and keeping the temperature of the liquid 2 fixed to the bottom of the container 3. 6 is a lid covering the upper opening of the container 3 , 7 is a pump for taking out the liquid 2, 8a
Is a water pipe constituting a part of the outflow channel 8. Reference numeral 9 denotes a check valve case 9 placed inside the spout 4, and is composed of a case 9b having an upper case 9a formed with a discharge port 10 for discharging the liquid 2 led out by the pump 7 to the outside of the main body. One of the water pipes 8a communicates with the lower case 9b, and the other communicates with the pump 7. Inside the case, there was formed a falling outflow control port 9c for communicating the upper case 9a and the lower case 9b with each other, and a check valve 11 for closing the body when the main body fell.

The operation of the above configuration will be described. The switch 12 operates in conjunction with the external operation to drive the pump 7, and the liquid 2 in the container 3 is drawn out into the lower case 9b via the water pipe 8a. Further, it passes through the falling outflow control port 9c and is led out from the discharge port 10 formed in the upper case 9a. Further, when the external operation is stopped, the switch 12 is operated to stop the drive of the pump 7, and the discharge of the liquid 2 in the container 3 is completed. At the end of the tapping operation, the liquid 2 collected in the upper case 9a returns from the lower case 9b to the water pipe 8a through the overturned outflow control port 9c in the open state.

[0004]

However, in the above-mentioned conventional structure, the overflow / outflow control port 9c is normally kept open, so that the outflow path 8 and the outside of the main body are in communication with each other. Therefore, when the main body is tilted forward and the water level of the liquid 2 contained in the container 3 and the position of the falling outflow control port 9c are reversed, the liquid 2 leaks from the discharge port 10 to the outside of the main body. Was. Therefore, it is difficult to increase the amount of the liquid 2 contained in the container 3 and make the main body compact.

The present invention solves the above-mentioned conventional problems, and provides an electric water heater that can prevent the liquid in a container from leaking out of the main body even when the main body is rapidly or gradually inclined forward. The purpose is to do.

[0006]

Means for Solving the Problems The present invention to solve the above problems, the heating and the body constituting an outer shell, a bottomed cylindrical container which is located inside of the body, the liquid in the container A heating element, a lid that covers an upper opening of the container,
Comprising a discharge port for discharging liquid to the outside of the main body, and the outflow path connecting the container and the discharge port, in the outlet channel, inclined outflow
An inclined outflow control pipes having a control port, and a conical lower shape
A check valve case having a check valve therein,
The angle θ1 of the conical slope of the check valve with respect to the horizontal is
When the body is tilted toward the discharge port, the liquid is tilted.
The inclination angle θ2 of the body when passing through the oblique outflow control port
An electric kettle is made smaller .

[0007] Thus, even when the main body is rapidly or gradually inclined forward, it is possible to prevent the liquid in the container from leaking out of the main body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, there is provided a body constituting an outer shell, and a body enclosed inside the body.
A bottomed cylindrical container, a heating element for heating the liquid in the container, a lid for covering an upper opening of said container, a discharge port for discharging liquid to the outside of the main body, the container and the discharge port An outflow channel for connection, and an inclined outflow control port is provided in the outflow channel.
An inclined outflow control pipes having, check that the lower conical
A check valve case having a valve therein, wherein the check valve is
The angle θ1 of the conical portion inclined surface with respect to the horizontal
When the liquid is inclined to the discharge port side, the liquid is inclined
Smaller than the angle of inclination θ2 of the body when passing through the mouth
This has the effect of preventing the liquid in the container from leaking to the outside of the main body even when the main body is rapidly or gradually inclined forward.

According to a second aspect of the present invention, there is provided a body constituting an outer shell, a bottomed cylindrical container included in the body, a heating element for heating a liquid in the container, and an upper surface of the container. comprising a lid for covering the opening, a discharge port for discharging liquid to the outside of the main body, and the outflow path connecting the container and the discharge port,
During the outlet channel, the reverse has an inclined outflow control <br/> pipes having an inclined outlet control port, the check valve has a lower conical inside
A stop valve case is provided, and the check valve is inclined toward the discharge port side. Even when the main body is rapidly or gradually inclined forward, the liquid in the container is discharged to the outside of the main body. Has the effect of preventing leakage.

The invention according to claim 3 further comprises a check valve.
The angle θ3 of the discharge port side inclined surface of the conical portion with respect to the horizontal is
When the main body is tilted to the discharge port side, the liquid tilts outflow control
The angle of inclination of the main body when passing through the mouth should be smaller than θ4.
By that, even when allowed to rapidly or gradually tilting the body forward, it has an action that can prevent the leakage of the liquid in the container to outside the main body.

According to a fourth aspect of the present invention, since the check valve case and the inclined outflow control pipe are integrally formed, the number of parts can be reduced, and the liquid in the container can be prevented from leaking out of the main body at low cost. Having.

According to a fifth aspect of the present invention, a drainage hole is provided below the oblique outflow control pipe, the drainage hole is normally opened in the drainage hole, and the drainage hole is opened when the main body falls down and tilts. With a water shutoff valve that closes, after the tapping operation is completed, the liquid that has passed through the inclined outflow control pipe and accumulated between the discharge ports is smoothly guided to the open drainage hole and returns to the water pipe. Therefore, it is possible to further improve the drainage property of the discharge port after the end of the tapping operation.

According to a sixth aspect of the present invention, the check valve case is
When the main body tilts and falls, it is closed by the check valve.
Comprising tipping outflow control port to the opening area of the inclined outlet control pipe is obtained by the configuration is less than the opening area of the tipping outflow control port, the negative which occurs when liquid passes through the overturning outlet control port during tapping operation The pressure can be reduced, and the check valve is attracted to the falling outflow control port, and in some cases, has a function of preventing the check valve from coming into close contact with the falling outflow control port and obstructing tapping.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The characteristic configuration of the present embodiment relates to the function of preventing the outflow of the slant.

(Embodiment 1) In FIGS. 1 and 2, reference numeral 21 denotes a body constituting an outer shell.
A container 23 containing the liquid 22 is included. Reference numeral 24 denotes a spout placed on the upper part of the body, and a container 23 is placed on the central opening. Reference numeral 25 denotes a heating element for heating and keeping the temperature of the liquid 22 fixed to the bottom of the container 23. 26 is a lid that covers the upper opening of the container 23, 27 is a pump that draws out the liquid 22, 28 is an outflow channel, and 28a is a water pipe that constitutes a part of the outflow channel 28. Reference numeral 29 denotes a check valve case mounted inside the spout 24, which is constituted by an upper case 29a and a lower case 29b having a discharge port 30 for discharging the liquid 22 led out by the pump 27 to the outside of the main body. I have. One of the water pipes 28a communicates with the lower case 29b and the other water pump 28a
Is in communication with A non-return valve 33 is provided inside the non-return valve case 29. The non-return control port 29c is provided to make the upper case 29a and the lower case 29b communicate with each other, and is closed when the main body is tilted forward and falls. An inclined outflow control pipe 29e is formed in a part of the outflow passage 28, an inclined outflow control port 29f is further provided in a part of the inclined outflow control pipe 29e, and a lower portion of the check valve 33 has a substantially conical shape. When the angle θ1 with respect to the horizontal of the inclined surface is inclined toward the front of the main body, the liquid 22 in the container 23 has a configuration that is smaller by at least 5 ° than the inclined angle θ2 that passes through the inclined outflow control port 29f. It is.

The operation of the above configuration will be described. The switch 32 operates in conjunction with the external operation to drive the pump 27, and the liquid 22 in the container 23 is transferred to the lower case 29 through the water pipe 28a.
b. Furthermore, it passes through the falling outflow control port 29c and the inclined outflow control pipe 29e, and is led out from the discharge port 30 formed in the upper case 29a. When the external operation is stopped, the switch 32 operates to stop the drive of the pump 27, and the discharge of the liquid 22 in the container 23 ends.

Therefore, according to this configuration, when the main body is inclined forward, the check valve 33 falls before the water level of the liquid 22 contained in the container 23 passes through the inclined outflow control port 29f. The outflow control port 29c is closed so that the liquid 22 can be prevented from flowing out of the main body.

(Embodiment 2) In the second embodiment, as shown in FIGS.
Is a body constituting an outer shell, and a container 2 for accommodating the liquid 22.
3 is included. Reference numeral 24 denotes a spout placed on the upper part of the body, and a container 23 is placed on the central opening. Reference numeral 25 denotes a heating element for heating and keeping the temperature of the liquid 22 fixed to the bottom of the container 23. 26 is a lid that covers the upper opening of the container 23;
7 is a pump for taking out the liquid 22, and 28 is an outflow passage.
8a is a water pipe constituting a part of the outflow channel 28. 2
Reference numeral 9 denotes a check valve case placed inside the inlet 24. The upper case 29a and the lower case 29 have a discharge port 30 for discharging the liquid 22 led out by the pump 27 to the outside of the main body.
b. One of the water pipes 28a is the lower case 2
The other end communicates with the pump 27. Inside the check valve case 29, there are an upper case 29a and a lower case 29b.
A check valve 33 which forms a falling outflow control port 29c for communicating with the body and which is closed when the main body is tilted forward and when the body falls.
And the check valve 33 is inclined forward. The inclination angle θ3 of the check valve 33 is substantially conical at the lower part of the check valve, and when the angle θ4 of the inclined portion with respect to the horizontal plane is inclined forward, the liquid 22 in the container 23 is inclined to the outflow control port 2.
It has a configuration that is set to be larger by at least 5 ° than the inclination angle θ2 passing through 9f.

The operation of the above configuration will be described. The switch 32 operates in conjunction with the external operation to drive the pump 27, and the liquid 22 in the container 23 is transferred to the lower case 29 through the water pipe 28a.
b. Further, it passes through the falling outflow control port 29c and is led out from the discharge port 30 formed in the upper case 29a. When the external operation is stopped, the switch 32 operates to stop the drive of the pump 27, and the discharge of the liquid 22 in the container 23 ends.

Therefore, according to this configuration, when the main body is tilted forward, the water level of the liquid 22 contained in the container 23 is tilted forward before passing through the falling outflow control port 29c. The non-return valve 33, which has been driven earlier when tilted forward, closes the falling outflow control port 29c, thereby preventing the liquid 22 from flowing out of the main body.

(Embodiment 3) In the third embodiment, as shown in FIG. 4, when the main body tilts and falls, the liquid 22 closes the overturning control port 29c earlier than the liquid 22 passes through the inclined outflow control port 29f. A configuration is provided in which the check valve 33 is inclined so as to be in a state. Check valve 3
The inclination angle θ3 of 3 is a substantially conical shape at the lower part of the check valve, and the inclination in which the liquid 22 in the container 23 passes through the inclined outflow control port 29f when the angle θ4 of the inclined part with respect to the horizontal plane is inclined forward. It has a configuration set to be larger by at least 5 ° than the angle θ2.

Therefore, according to this configuration, even when the main body is rapidly or gradually inclined forward, the water level of the liquid 22 contained in the container 23 is maintained at the inclined outflow control port 29.
Before passing through f, the check valve 33, which has been driven earlier when tilted forward by closing it forward, closes the falling outflow control port 29c to prevent the liquid 22 from flowing out of the main body. Can be.

(Embodiment 4) In a fourth embodiment, as shown in FIG. 4, an upper case 29a or a lower case 2 constituting a check valve case 29 is formed.
9b constitutes an inclined outflow control pipe 29e.

Therefore, the upper case 29a or the lower case 29b constituting the check valve case 29 constitutes the inclined outflow control pipe 29e, thereby reducing the number of parts and inexpensively leaking the liquid in the container to the outside of the main body. Can be prevented.

(Embodiment 5) In the fifth embodiment, as shown in FIG. 4, a drain hole 29d is provided below the inclined outflow control port 29f, and the drain hole 29d is normally a drain hole. Open 29d,
A water shutoff valve 31 is provided to close the main body when the main body falls down and when the main body is inclined.

Therefore, the liquid 22 that has passed through the inclined outflow control pipe 29e after the end of the tapping operation and accumulated between the discharge ports 30 can be smoothly guided to the drain hole 29d which is in an open state, and can return to the water pipe 28a. Further, it is possible to further improve the drainage of the discharge port 30 after the end of the tapping operation.

Embodiment 6 In the sixth embodiment, as shown in FIG. 4, the opening area of the inclined outflow control pipe 29e is determined by the check valve 33 inside the check valve case 29 when the main body is inclined and falls. Is not more than the opening area of the falling outflow control port 29c to be closed.

Therefore, it is possible to reduce the negative pressure generated when the liquid 22 passes through the falling outflow control port 29c during the tapping operation, and the check valve 33 is drawn to the falling outflow control port 29c, and in some cases, the falling outflow control is performed. Close contact with the mouth 29c can be prevented from hindering the tapping.

[0029]

As apparent from the above examples, according to the present invention, according to the invention described in claim 1 to 3, in the case where the present body was abruptly or gradually inclined forward, the liquid in the container body externally Can be prevented.

According to the fourth aspect of the present invention , the check valve case and the inclined outflow control pipe are integrally formed, so that the number of parts is reduced and the liquid in the container leaks out of the main body at low cost. Can be prevented.

Further, according to the invention of claim 5, wherein, the accumulated between the output passes through the inclined outflow control pipe after the hot water operation end discharge port liquid is induced to smoothly drain hole in the open state, the water pipe Therefore, it is possible to further improve the drainability of the discharge port after the end of the tapping operation.

According to the sixth aspect of the present invention, it is possible to reduce the negative pressure generated when the liquid passes through the falling outflow control port during the tapping operation, and the check valve is drawn to the falling outflow control port. In some cases, it is possible to prevent close contact with the falling outflow control port and hinder tapping.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an electric water heater showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part when the electric water heater shown in the first embodiment of the present invention is tilted forward.

FIG. 3 is a schematic sectional view of an electric water heater according to second to sixth embodiments of the present invention.

FIG. 4 is a sectional view of an essential part when the electric water heater shown in the second to sixth embodiments of the present invention is tilted forward.

FIG. 5 is a schematic sectional view of an electric water heater showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Body 22 Liquid 23 Container 25 Heating element 26 Lid 28 Outflow path 28a Water pipe 29 Check valve case 29c Falling outflow control port 29d Drainage port 29e Inclined outflow control pipe 29f Inclined outflow control port 30 Discharge port 31 Stop valve 32 Switch 33 check valve

Claims (6)

(57) [Claims] 1. A body constituting an outer shell, a bottomed cylindrical container included in the body, a heating element for heating a liquid in the container, and a lid covering an upper opening of the container. includes a discharge port for discharging liquid to the outside of the main body, and the outflow path connecting the container and the discharge port, in the outlet channel, slope
Conical and inclined outflow control pipes, the lower portion having an outlet control port
A check valve case having a check valve inside the check valve case,
Angle θ1 of the conical slope of the check valve with respect to the horizontal
When the body is inclined to the discharge port side, the liquid
The inclination angle of the body when passing through the inclined outflow control port
An electric water heater that is less than the degree θ2 . 2. A body constituting an outer shell, a bottomed cylindrical container which is located inside of the body, a heating element for heating the liquid in the container, a lid for covering an upper opening of the container includes a discharge port for discharging liquid to the outside of the main body, and the outflow path connecting the container and the discharge port, in the outlet channel, slope
Conical and inclined outflow control pipes, the lower portion having an outlet control port
A check valve case having a check valve inside the check valve case,
An electric water heater having a configuration in which the check valve is inclined toward the discharge port . 3. The water on the inclined surface on the discharge port side of the conical portion of the check valve.
The angle θ3 with respect to the plane is obtained when the main body is inclined toward the discharge port.
Angle of the body when the liquid passes through the inclined outflow control port
3. The electric water heater according to claim 2, wherein the degree is smaller than the degree θ4 . 4. The electric water heater according to claim 1, wherein the check valve case and the inclined outflow control pipe are integrally formed. 5. A water stop valve provided with a drainage hole below the inclined outflow control port, wherein the drainage hole is normally in an open state in the drainage hole, and is closed when the main body falls down and is inclined. The electric water heater according to any one of claims 1 to 3, further comprising: 6. The check valve case has a main body which is tilted and falls down.
A fall outflow control port that is sometimes closed by a check valve
The electric water heater according to any one of claims 1 to 3 , wherein an opening area of the inclined outflow control pipe is equal to or smaller than an opening area of the falling outflow control port.