JP3201310B2 - 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 configuration of the conventional electric water heater will be described in detail. In FIG. 7, reference numeral 1 denotes a main body constituting an outer shell, which contains a container 3 for containing the liquid 2 therein. Reference numeral 4 denotes a spout placed on the upper part of the main body 1, and the container 3 is placed on the central opening. 5 is a heating element for heating and keeping the liquid 2 warm.
It is fixed to the bottom of the container 3. Reference numeral 6 denotes a lid for covering the upper opening of the container 3, reference numeral 7 denotes a pump for discharging the liquid 2, and reference numeral 8 denotes an outflow path. Reference numeral 9 denotes a case placed inside the spout 4, and an upper case 9 a and a lower case 9 having a discharge port 10 for discharging the liquid 2 led out by the pump 7 to the outside of the main body 1.
b. One of the outflow paths 8 communicates with the lower case 9b, and the other communicates with the pump 7. Inside the case 9, there is formed a falling outflow control port 9c for making the upper case 9a and the lower case 9b communicate with each other. In the falling outflow control port 9c, the falling outflow control port 9c is normally opened. And a falling outflow prevention valve 11 that closes when the main body falls.

The operation of the above configuration will be described. The switch 12 operates in conjunction with the external operation to drive the pump 7 to draw out the liquid 2 in the container 3 through the outflow path 8 into the lower case 9b. 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. After the end of the tapping operation, the liquid 2 collected in the upper case 9a is returned from the lower case 9b to the outflow path 8 via the overturned outflow control port 9c in the open state.

[0004]

However, in the above-described conventional configuration, the outflow path 8 and the outside of the main body 1 are in communication with each other because the overturned outflow control port 9c is kept open. For this reason, the main body 1 is tilted forward and the container 3
When the water level of the liquid 2 contained in the inside and the formed position of the fall-out control port 9c are reversed, there is a problem that the liquid 2 leaks from the discharge port 10 to the outside of the main body 1 and wets around. Therefore, the storage amount of the liquid 2 in the container 3 is increased, and
Was difficult to make compact.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a large-capacity and compact electric water heater that improves the usability.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention forms a falling outflow control port and a water draining hole for communicating an upper case and a lower case in a case,
In the falling outflow control port, the falling outflow control port is normally opened when the body is overturned, and the falling outflow prevention valve is closed when the body falls, and the water draining hole is normally opened in the water draining hole,
A check valve that closes when the main body falls down and the main body is tilted , and the liquid in the container is closed by the forward tilt of the main body.
In order to suppress leakage to the outside, a substantially cylindrical inclined outflow control pipe is provided above the overturning outflow control port. With the above configuration, the main body is tilted forward, and even when the water level of the liquid contained in the container and the position of the falling outflow control port are reversed, a substantially cylindrical inclined outflow control pipe provided above the falling outflow control port. To prevent liquid from leaking from the discharge port to the outside of the main unit until the tip of the liquid and the water level are reversed, and the check valve closes the water drain hole due to the water pressure of the liquid flowing out of the outflow path and prevents the liquid from flowing out of the main unit. Can be. Further, the liquid collected in the upper case after the end of the tapping operation can smoothly return to the lower case and the outflow path via the drainage hole in the open state, so that the drainage of the discharge port can be improved. In addition, when the main body falls, the falling outflow prevention valve operates to close the falling outflow control port, and the check valve closes the drain hole by the water pressure of the liquid flowing out of the outflow path to prevent the liquid from flowing out of the main body. be able to.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS To solve the above-mentioned problems, the present invention provides a main body constituting an outer shell, a spout mounted on an upper part of the main body, a container for containing a liquid inside the main body, and the container A heating element that heats the liquid in the container, a lid that covers the upper opening of the container, and a pump that leads out the liquid in the container,
A case formed of an upper case and a lower case in which a discharge port for discharging the liquid led out by the pump to the outside of the main body is formed inside the spout; an outflow path connecting the pump and the lower case; A falling outflow control port and a drain hole for communicating the upper case and the lower case are formed inside the case, and the falling outflow control port is normally opened in the falling outflow control port. A fall-off prevention valve that closes when the main body falls, a check valve that normally closes the water drain hole in the water drain hole when the main body falls and the main body is tilted, The book
The liquid in the container leaks out of the main body due to the forward tilt of the body
In order to suppress this , a substantially cylindrical inclined outflow control pipe is provided above the overturning outflow control port.

With this configuration, the main body is tilted forward,
Even when the water level of the liquid contained in the container and the position of the falling outflow control port are reversed, the liquid is discharged until the tip of the substantially cylindrical inclined outflow control pipe provided above the falling outflow control port and the water level reverse. The liquid can be prevented from leaking from the outlet to the outside of the main body, and the check valve can close the drain hole by the water pressure of the liquid flowing out from the outflow path, thereby preventing the liquid from flowing out of the main body. Further, the liquid collected in the upper case after the end of the tapping operation can smoothly return to the lower case and the outflow path via the drainage hole in the open state, so that the drainage of the discharge port can be improved. In addition, when the main body falls, the falling outflow prevention valve operates to close the falling outflow control port, and the check valve closes the drain hole by the water pressure of the liquid flowing out of the outflow path to prevent the liquid from flowing out of the main body. be able to.

Further, the check valve is provided so that the mounting portion of the check valve is on the front side of the main body.

[0010] With this configuration, even when the water pressure of the liquid flowing out of the outflow path when the main body is tilted is low and the check valve cannot sufficiently close the drain hole, the check valve of the check valve is utilized by utilizing the surface tension of the liquid. The drain hole can be closed from the root to prevent the liquid from flowing out of the main body.

[0011] Further, a drain hole and a check valve are provided near the discharge port. With this configuration, the liquid collected in the upper case after the end of the tapping operation can be more smoothly guided to the draining hole in the open state, and can return to the lower case and the outflow path. Can be improved.

Further, a drain hole is provided on an inclined surface in which the front side of the main body is downward. With this configuration,
When the body is tilted, the water pressure of the liquid that has flowed out of the flow path is low,
Even when the check valve cannot sufficiently close the drain hole, the drain hole can be closed by using the dead weight of the check valve to prevent the liquid from flowing out of the main body.

[0013] Further, a weight portion with an air reservoir is provided at the end of the check valve. With this configuration, even when the water pressure of the liquid that has flowed out of the flow path when the main body is tilted is low, and the check valve cannot sufficiently close the drain hole,
By utilizing the buoyancy of the air stored in the weight provided at the end of the check valve, the check valve closes the drain hole and prevents the liquid from flowing out of the main body.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. 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 main body constituting an outer shell, which contains a container 23 containing a liquid 22 therein. Reference numeral 24 denotes a spout placed on the upper part of the main body 21, 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 container 23
, A pump for drawing out the liquid 22, and 28 an outflow path. Reference numeral 29 denotes a case placed inside the spout 24, which is composed of 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 21. One of the outflow paths 28 communicates with the lower case 29b and the other is the pump 2
It communicates with 7. Inside the case 29, the upper case 2
A fall / outflow control port 29c and a drain hole 29d for connecting the lower case 29a to the lower case 29b are formed. A falling outflow prevention valve 31 which is sometimes closed, and a water draining hole 29
A check valve 33 that opens d and closes when the main body falls down and the main body is tilted, and a substantially cylindrical inclined outflow control pipe 29e is provided above the falling outflow control port 29c.

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 2 through the outflow path 28.
9b. Further, it passes through the falling outflow control port 29c and the inclined outflow control pipe 29e, and
Is discharged to the outside from the discharge port 30 formed in the shape. When the external operation is stopped, the switch 32 operates and the pump 27 operates.
Of the liquid 22 in the container 23 is terminated. After the end of the tapping operation, the liquid 22 collected in the upper case 29a is returned from the lower case 29b to the outflow path 28 through the drainage hole 29d in the open state.

Therefore, according to this configuration, the main body 21
When the water level of the liquid 22 contained in the container 23 and the position of the falling outflow control port 29c are reversed, the substantially cylindrical inclined outflow control pipe 29e provided above the falling outflow control port 29c. The liquid 22 is prevented from leaking from the discharge port 30 to the outside of the main body 21 until the tip of the liquid 22 and the water level are reversed, and the check valve 33 closes the drain hole 29d by the water pressure of the liquid 22 flowing out from the outflow path 28, Is the main body 21
It can be prevented from flowing out. Further, the liquid 22 collected in the upper case 29a after the end of the tapping operation is smoothly transferred to the lower case 29 through the draining hole 29d in the open state.
Since it is possible to return to b and the outflow path 28, the drainage of the discharge port 30 can be improved. Further, when the main body falls, the fall / outflow prevention valve 31 operates to close the fall / outflow control port 29 c, and the check valve 33 closes the drain hole 29 d by the water pressure of the liquid 22 flowing out from the outflow path 28, and
Can be prevented from flowing out of the main body 21.

(Embodiment 2) As for the second means, as shown in FIG.
Check valve 33 so that the mounting portion 33a of the
Is provided.

Therefore, according to this configuration, even if the water pressure of the liquid 22 flowing out of the outflow passage 28 when the main body 21 is tilted is low and the check valve 33 cannot sufficiently close the drain hole 29d, the surface of the liquid 22 can be prevented. Using the tension, the drainage hole 29d can be closed from the base of the check valve 33 near the attachment portion 33a to prevent the liquid 22 from flowing out of the main body 21.

(Embodiment 3) As for the third means, as shown in FIG.
9d and the check valve 33 are provided in the vicinity of the discharge port 30.

Therefore, according to this configuration, the liquid 22 collected in the upper case 29a after the end of the tapping operation is guided to the drain hole 29d in the open state more smoothly, and returns from the lower case 29b to the outflow path 28. Therefore, the drainability of the discharge port 30 can be further improved.

(Embodiment 4) As for the fourth means, as shown in FIG.
9d is provided on an inclined surface where the front side of the main body 21 is downward.

Therefore, according to this configuration, even when the water pressure of the liquid 22 flowing out of the outflow path 28 when the main body 21 is tilted is low and the check valve 33 cannot sufficiently close the drain hole 29d, the check valve 33 can be used. The drainage hole 29d can be closed by using the weight of the liquid 22 to prevent the liquid 22 from flowing out of the main body 21.

(Embodiment 5) As for the fifth means, as shown in FIG.
A weight portion 33b having an air reservoir at the end is provided.

Therefore, according to this configuration, even when the water pressure of the liquid 22 flowing out of the outflow passage 28 when the main body 21 is tilted is low and the check valve 33 cannot sufficiently close the drain hole 29d, the check valve 33 can be used. Weight 33b provided at the end
The check valve 33 uses the buoyancy of the air stored in the drain hole 2
9d can be closed to prevent the liquid 22 from flowing out of the main body 21.

[0026]

As is apparent from the above embodiment, according to the first aspect of the present invention, a fall / outflow control port and a drain hole for connecting the upper case and the lower case to each other are formed in the case. The fall / outflow control port is normally open with the fall / outflow control port, and the fall / outflow prevention valve is closed when the body falls, and the drainage hole is normally opened with the drainage hole. A check valve that closes when the main body falls down and the main body is tilted, and a tilt in the front of the main body causes
In order to prevent the liquid from leaking to the outside of the main body , the main body is tilted forward by providing a substantially cylindrical inclined outflow control pipe above the overturning outflow control port, and the water level of the liquid stored in the container and the overturning outflow control Even if the position of the mouth is reversed, the liquid is prevented from leaking from the discharge port to the outside of the main body until the tip of the substantially cylindrical inclined outflow control pipe provided at the top of the overturning outflow control port and the water level are reversed. The valve closes the drain hole by the water pressure of the liquid flowing out of the outflow path, thereby preventing the liquid from flowing out of the main body. Further, the liquid collected in the upper case after the end of the tapping operation can smoothly return from the lower case to the outflow path through the drainage hole which is in the open state, so that the drainage of the discharge port can be improved. In addition, when the main body falls, the falling outflow prevention valve operates to close the falling outflow control port, and the check valve closes the drain hole by the water pressure of the liquid flowing out of the outflow path to prevent the liquid from flowing out of the main body. be able to.

Further, by providing the check valve such that the mounting portion of the check valve is on the front side of the main body, the water pressure of the liquid flowing out of the outflow path when the main body is tilted is low, Even when the check valve cannot close the drain hole sufficiently, the drain hole can be closed from the base of the check valve by using the surface tension of the liquid to prevent the liquid from flowing out of the main body.

Further, by providing a drain hole and a check valve in the vicinity of the discharge port as in the third aspect of the present invention, the liquid accumulated in the upper case after the tapping operation is more smoothly opened. Since it is guided to a certain drainage hole and can return to the lower case and the outflow path, the drainage of the discharge port can be further improved.

Further, by providing the drainage hole on the inclined surface with the front side of the main body being downward, the water pressure of the liquid flowing out of the outflow path when the main body is tilted is low, and the check valve is provided. Even when the drainage hole cannot be closed sufficiently, the drainage hole can be closed by using the dead weight of the check valve to prevent the liquid from flowing out of the main body.

Further, by providing a weight portion having an air reservoir at the end of the check valve, the water pressure of the liquid flowing out of the outflow path when the main body is tilted is low, and the check valve is thus provided. Even if the drain hole cannot be closed sufficiently, the check valve closes the drain hole by using the buoyancy of the air stored in the weight provided at the end of the check valve, and the liquid flows out of the main body. Can be prevented.

[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 according to the first embodiment of the present invention is inclined forward.

FIG. 3 is a cross-sectional view of a main part when the electric water heater according to the second embodiment of the present invention is tilted forward.

FIG. 4 is a sectional view of an electric water heater showing a third embodiment of the present invention.

FIG. 5 is a sectional view of a main part when the electric water heater according to the fourth embodiment of the present invention is tilted forward.

FIG. 6 (a) is a cross-sectional view of a main part of an electric water heater according to a fifth embodiment of the present invention when the electric water heater is tilted forward, FIG. 6 (b) is a cross-sectional view of a check valve of the electric water heater, and FIG. View from the direction A of the check valve of the electric water heater

FIG. 7 is a schematic cross-sectional view of an electric water heater showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Main body 22 Liquid 23 Container 24 Spout 25 Heating element 26 Cover 27 Pump 28 Outflow path 29 Case 29a Upper case 29b Lower case 29c Falling outflow control port 29d Drainage hole 29e Inclined outflow control pipe 30 Discharge port 31 Falling outflow prevention valve 32 Switch 33 Check valve

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47J 27/21

Claims (5)

(57) [Claims] 1. A main body constituting an outer shell, a spout placed on an upper part of the main body, a container for storing a liquid inside the main body, a heating element for heating the liquid in the container, An upper case and a lower case in which a lid covering an upper opening, a pump for drawing out the liquid in the container, and a discharge port for discharging the liquid drawn out by the pump to the outside of the main body are formed inside the spout; And a flow path for connecting the pump and the lower case, and a fall / flow control port and a drain hole for communicating the upper case and the lower case in the case. In the fall outflow control port, the fall outflow control port is normally in an open state,
When the main body falls, the overflow prevention valve to be closed when the body falls, and the water drain hole is normally in the open state with the water drain hole,
A check valve that closes when the main body falls down and the main body is tilted , and the liquid in the container is closed by the forward tilt of the main body.
An electric water heater having a substantially cylindrical inclined outflow control pipe above the overturning outflow control port so as to suppress leakage to the outside . 2. The electric water heater according to claim 1, wherein a check valve is provided so that a mounting portion of the check valve is on a front side of the main body. 3. The electric water heater according to claim 1, wherein a drain hole and a check valve are provided near the discharge port. 4. The electric water heater according to claim 1, wherein the drain hole is provided on an inclined surface having the front side of the main body downward. 5. The electric water heater according to claim 1, wherein a weight portion having an air reservoir is provided at an end of the check valve.