JP2000051078A - Electric water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric water heater capable of preventing liquid in a vessel from spilling to the outside of a heater body even when the heater body is abruptly or gradually inclined forward. SOLUTION: When an electric water heater body is inclined forward, a check valve 33 closes an overturning flow-out control port 29c before a water level of liquid 22 stored in a vessel 23 passes an inclination flow-out control port 29f so as to prevent the liquid 22 from flowing out to the outside of the heater body.

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. Reference numeral 6 denotes a lid for covering the upper opening for heating the container 3, reference numeral 7 denotes a pump for drawing out the liquid 2, and reference numeral 8a denotes a water pipe constituting a part of the outflow passage 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. A non-return valve 9c is formed inside the case to make the upper case 9a and the lower case 9b communicate with each other, and is closed when the main body falls.
Had one.

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]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a body constituting an outer shell, a bottomed cylindrical container for accommodating a container inside the body, and heating a liquid in the container. Heating element, a lid covering an upper opening of the container, a discharge port for discharging liquid to the outside of the main body, an outflow path connecting the container and the discharge port, and an inclined outflow control pipe in the outflow path; A non-return valve case, an oblique outflow port provided in the oblique outflow control pipe, and an inside of the non-return valve case that closes an outflow passage earlier than when the liquid body passes through the oblique outflow control port when the main body inclines and falls. An electric water heater having a check valve for setting a state.

[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, a body constituting an outer shell, a bottomed cylindrical container for housing a container inside the body, and a liquid in the container are heated. A heating element, a lid covering an upper opening of the container, a discharge port for discharging a liquid to the outside of the main body, an outflow path connecting the container and the discharge port, and an inclined outflow control pipe and an inverted flow path in the outflow path. A stop valve case, an inclined outlet provided in the inclined outflow control pipe, and a state in which the main body in the check valve case closes the outflow passage earlier than when the liquid body passes through the inclined outflow control port when the main body inclines and falls. And has a function of preventing the liquid in the container from leaking out 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 accommodating a container inside the body, a heating element for heating a liquid in the container, A cover that covers the top opening, a discharge port that discharges liquid to the outside of the main body, an outflow path that connects the container and the discharge port, and an inclined outflow control pipe and a check valve case in the outflow path;
The inclined outflow control pipe has a configuration in which a non-return valve is inclined so that the outflow path is closed when the main body inclines and falls over, inside the non-return valve case. Even if the container is inclined forward or abruptly, the liquid in the container can be prevented from leaking out of the main body.

According to a third aspect of the present invention, the check valve is further tilted in the case so that the outflow path is closed earlier than the liquid passes through the tilted outflow control port when the main body is tilted and falls. 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 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 opening area of the oblique outflow control pipe is equal to or less than the opening area of the outflow port where the check valve inside the check valve case closes the outflow path when the main body tilts and falls. 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 may be drawn to the falling outflow control port, and in some cases, the falling outflow control port And has the effect of preventing obstruction of 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, and a container 23 containing a liquid 22.
Is included. 24 is a spout placed on the upper part of the body,
The container 23 is placed on the central opening. 25 is the liquid 22
Is a heating element for heating and maintaining the temperature, and is fixed to the bottom of the container 23. 26 is a lid for covering the upper opening of the container 23, 27 is a pump for drawing out the liquid 22, and 28 is an outflow passage.
Is a water pipe constituting 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 tubes 28a is a lower case 29b.
The other is in communication with the pump 27. A non-return valve 33 is provided inside the non-return valve case 29 to form a falling outflow control port 29c for communicating the upper case 29a and the lower case 29b, and to be in a closed state when the main body is tilted forward and when it falls down.
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 forward 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. 3 and 4, 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. The check valve 33 is configured to be 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 moves through the inclined outflow control port 29f. Passing inclination angle θ2
It has a configuration set to be larger by at least 5 ° or more.

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 is tilted and falls, the liquid 22 is closed 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. 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 moves through the inclined outflow control port 29f. It has a configuration that is set to be larger by at least 5 ° or more than the passing inclination 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, the upper case 29a or the lower case 29b constituting the check valve case 29 forms the inclined outflow control pipe 2.
9e.

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. 29d is provided with a water stop valve 31 that is in an open state and that is closed 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 is apparent from the above embodiment, according to the first aspect of the present invention, the inclined outflow control pipe and the check valve case are provided in the outflow path, and the inclined outflow control pipe is provided with the inclined outflow port. The check valve case has a check valve that closes the outflow passage earlier than the liquid passes through the inclined outflow control port when the main body tilts and falls over, so that the main body is rapidly or gradually moved forward. The liquid in the container can be prevented from leaking to the outside of the main body even in the case where the liquid is inclined.

Further, as in the second aspect of the present invention, the inclined outflow control pipe and the check valve case are provided in the outflow passage, the inclined outflow port is provided in the inclined outflow control pipe, and the forward inside the check valve case. The check valve that has been driven earlier when tilted forward has a configuration that closes the outflow path when the body is tilted and falls, so that the main body can be sharply or gradually tilted forward. Also, it is possible to prevent the liquid in the container from leaking out of the main body.

Further, as in the third aspect of the present invention, the check valve, which is driven forward at the time of tilting forward by tilting forward inside the case, controls the tilt and outflow of liquid when the body tilts and falls. By having a configuration that closes the outflow path earlier than passing through the mouth, it is possible to prevent the liquid in the container from leaking out of the main body even when the main body is rapidly or gradually inclined forward.

Further, 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. .

According to the fifth aspect of the present invention, a drainage hole is provided below the inclined outflow control pipe, and the drainage hole is normally opened in the drainage hole, and the drainage hole is opened when the main body falls down and is inclined. Is provided with a water shutoff valve that closes, and after the tapping operation is completed, the liquid that has passed through the inclined outflow control pipe and collected 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 drainability of the discharge port after the end of the tapping operation.

According to the sixth aspect of the present invention, the opening area of the oblique outflow control pipe is such that the check valve inside the check valve case closes the outflow path when the main body is tilted and falls. With a configuration that is smaller than the opening area, it is possible to reduce the negative pressure generated when the liquid passes through the falling outflow control port at the time of tapping operation, and the check valve is drawn to the falling outflow control port, and in some cases the tipping over It is possible to prevent close contact with the 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

Continued on the front page F term (reference) 4B055 AA34 BA03 BA04 CA01 CA06 CA09 CA19 CA22 CA71 CB07 CB09 CB13 CB30 CC28 CC52 CC58

Claims (6)

[Claims] 1. A body constituting an outer shell, a bottomed cylindrical container for housing a container inside the body, a heating element for heating a liquid in the container, and a lid for covering an upper opening of the container. A discharge port for discharging liquid to the outside of the main body, an outflow path connecting the container and the discharge port, an inclined outflow control pipe and a check valve case in the outflow path, and an inclination provided in the inclined outflow control pipe. An electric water heater having an outflow port and a check valve inside the check valve case, the check valve closing the outflow passage earlier than the liquid passes through the slant outflow control port when the main body tilts and falls. 2. A body constituting an outer shell, a bottomed cylindrical container for housing a container inside the body, a heating element for heating a liquid in the container, and a lid for covering an upper opening of the container. A discharge port for discharging the liquid to the outside of the main body, an outflow path connecting the container and the discharge port, an inclined outflow control pipe and a check valve case in the outflow path, and an inclined flow in the inclined outflow control pipe. An electric water heater having a configuration in which a check valve is inclined at an outlet and inside the check valve case so that the outflow path is closed when the body is inclined and falls. 3. A check valve is provided in the case such that the check valve is inclined so that the outflow path is closed earlier than the liquid passes through the inclined outflow control port when the body is inclined and falls.
An electric kettle as described. 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 opening area of the inclined outflow control pipe is smaller than the opening area of the inverted outflow control port for closing the check valve inside the check valve case when the main body is inclined and falls. The electric water heater according to any one of claims 1 to 3.