JP3812492B2 - Electric water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric water heater that heats and keeps a liquid in a water heater container out of the container.
[0002]
[Prior art]
Conventionally, in this type of electric water heater, all the liquid is contained in a water heater container. Therefore, the actual amount of liquid stored in the kettle container is always storing more liquid than necessary for the time being in consideration of ease of use.
[0003]
[Problems to be solved by the invention]
For this reason, after the end of boiling, the amount of heat more than necessary is kept, and power is wasted. In addition, when supplying water to a kettle container, it is necessary to open the lid and pour liquid into the hot water, which is troublesome and requires attention to hot water and steam.
[0004]
The present invention solves the above-mentioned conventional problems, and only heats and holds the required amount of liquid and stores it separately to reduce power consumption and eliminate the need for attention to hot water and steam during water injection. In addition, an object of the present invention is to provide an electric water heater that can prevent excessive water supply.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the electric water heater of the present invention comprises a water storage tank for storing liquid to be supplied to the water heater container separately from the water heater container, and the water supply port from the water storage tank to the water heater container is below the upper end of the water heater container. The water storage tank is poured from the water supply port into the kettle, and the drainage port is connected to the kettle through the water supply channel. it is obtained have a low passage to be more downward.
[0006]
As a result, only the required amount of liquid is heated and kept in the water heater container, and the rest is stored in the water storage tank, reducing power consumption and making it unnecessary to pay attention to hot water and steam at the time of water injection. Can be prevented.
[0007]
Furthermore, when the liquid supplied at some points in the water supply channel stays and the water supply channel is completely closed, and steam is generated due to boiling of the liquid in the kettle, the steam is discharged from the water supply port. The effect which prevents this is acquired.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The invention described in claim 1 comprises a water heater container, heating means for heating the liquid in the water heater container, and a water storage tank for storing the liquid to be supplied to the water heater container, and the water supply port from the water storage tank to the water heater container is a water heater. An electric water heater that is located below the upper end of the container and in which the liquid in the water storage tank is poured into the water heater through this water supply port, heats and keeps only the required amount of liquid in the water heater. By storing in a water storage tank, power consumption can be reduced and attention to hot water and steam at the time of water injection can be eliminated, and excessive water supply can be prevented.
[0009]
Furthermore, the water outlet is connected to a water heater through a water supply channel, and the water supply channel is an electric water heater having a low passage below the drain port. Even if the liquid supplied at the part of the tank stays and the water supply channel is completely blocked, and steam is generated due to boiling of the liquid in the kettle, the steam is prevented from being discharged from the water supply port. It is done.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
Example 1
A first embodiment of the present invention will be described with reference to FIG.
[0012]
As shown in the figure, the liquid 2 contained in the water heater 1 is heated to a predetermined temperature by a heating element 3 as a heating means. The liquid 2 heated to a predetermined temperature is guided to the outside of the container 6 from the outlet 12 through the outlet 11 by the pump 10 as the outlet. The upper opening of the water heater 1 is covered with a lid 5, and the lid 5 is provided with a steam port 5 a that guides the steam generated in the water heater 1 to the outside of the vessel 6.
[0013]
A water storage tank 20 for storing the liquid 2 to be supplied to the kettle container 1 is provided separately from the kettle container 1 and is detachably installed on the vessel 6. Here, when the liquid amount is reduced to a certain amount by using the liquid 2, a certain amount of the liquid 2 stored in the water storage tank 20 passes through the water supply passage 21 and is added from the drain port 22. The liquid 2 to be added is poured intermittently or continuously to a predetermined amount. The water supply path 24 is provided in a part or inside of the water storage tank 20, and the liquid 2 sent from the water supply pump 23 is poured into the upper part of the water discharge port 20 b passing through the water supply path 24 and facing the water supply port 26. The water supply port 26 is provided in the protrusion 6 a on the side surface of the container 6 and is provided below the upper end of the water heater container 1. Furthermore, the water supply port 26 is located below the lead-out path highest point 11a and the steam port 5a. Further, the water supply port 26 is not particularly concerned with the arrangement position unless it is in a position other than the position at which the opening and closing of the lid 5 is hindered.
[0014]
The water supply pump 23 includes an impeller 23a and a water supply motor 23b that drives the impeller 23a by magnetic coupling. The feed water pump 23 is driven by the control unit 4 which is a control means. The control unit 4 drives the water supply pump 23 to a required amount in accordance with the amount of liquid detected by the water level sensor 13 provided in the kettle container 1 or the outlet path 11. The control unit 4 may drive the water supply pump 23 for a certain time according to the liquid amount.
[0015]
With the configuration as described above, the necessary liquid 2 is immediately boiled and kept warm in the water-boiling container 1, and the liquid to be heated in the future is stored in the water storage tank 20, which is a reserve tank. Water is poured into the water storage tank 20 so that attention to hot water and steam is not necessary. Further, since the water supply port 26 is covered and concealed by the water storage tank 20 when the water storage tank 20 is attached, the water supply port 26 does not come out and there is no problem in appearance.
[0016]
In addition, if the water supply pump 23 is continuously operated for some reason at such a position of the water supply port 26, water is supplied to the water heater 1 at the height of the water supply port 26. Can not supply water to the water heater container 1 and the water inlet 26 overflows, so that the liquid 2 poured into the upper part of the water outlet 20 b returns to the lower side of the water storage tank 20 without being poured into the water heater container 1. In addition, it is possible to prevent excessive water supply, and even when the water supply pump 23 performs continuous operation due to runaway, an effect of preventing the liquid 2 from flowing out to the outside can be obtained.
[0017]
( Reference Example 1 )
Reference Example 1 of the present invention will be described with reference to FIG.
[0018]
The water supply port 26 is positioned above the substantially full water position 1 a of the water heater container 1, and the drain port 22 and the water supply path 21 are also positioned above the substantially full water position 1 a of the water heater container 1.
[0019]
If it is this structure, while being able to supply water smoothly to the water heater container 1, the backflow from the water heater container 1 to the water supply port 26 is prevented, and furthermore, since the water supply port 26 is located below the upper end of the water heater container 1, excessive water supply is prevented. Effect is obtained.
[0020]
( Reference Example 2 )
Reference Example 2 of the present invention will be described with reference to FIG.
[0021]
A protrusion 6a is provided in the vertical direction of the side surface of the vessel body 6, and a water supply port 26 is provided on the upper surface of the protrusion 6a. The protrusion 6a may be at any position as long as it is a side surface of the container body 6. The protrusion 6a is formed integrally with the vessel body 6, and the water storage tank 20 is formed so as to surround the protrusion 6a.
[0022]
With the configuration as described above, when the water supply pump 23 is continuously operated for some reason, water is supplied to the water heating container 1 at the height of the water supply port 26, but beyond that, the liquid is heated due to the head difference. Water cannot be supplied to the container 1 and the water supply port 26 overflows. For this reason, the liquid poured into the upper part of the spout 20b returns to the lower side of the water storage tank 20 without being poured into the kettle 1 to prevent excessive water supply, and the water pump 23 runs continuously due to runaway. Even in the case of performing the above, the effect of preventing the liquid from flowing out to the outside can be obtained.
[0023]
( Reference Example 3 )
Reference Example 3 of the present invention will be described with reference to FIG.
[0024]
A packing 27 made of rubber or the like for the purpose of preventing water leakage is provided around the water supply port 26, and this packing 27 comes into contact with the connecting portion when the water storage tank 20 is installed on the body 6.
[0025]
With the configuration as described above, the adhesion between the water supply port 26 and the water storage tank 20 is improved, the liquid can be surely boiled and water can be supplied to the container 1, and water leakage from the water supply port 26 can be achieved even during normal water supply and excessive supply. The effect which prevents is obtained. Further, even if the water leakage around the water supply port 26 is improved by fitting the container 6 and the water storage tank 20, the same effect can be obtained.
[0026]
( Reference Example 4 )
Reference Example 4 of the present invention will be described with reference to FIG. The basic configuration is the same as that of the first embodiment, and only the differences will be described.
[0027]
The connecting portion of the water storage tank 20 facing the water supply port 26 is provided with a rubber packing 27a for the purpose of preventing water leakage. When the water storage tank 20 is installed in the body 6, the packing 27a supplies water. It is in contact with the mouth 26.
[0028]
With this configuration, the adhesion of the water storage tank 20 is improved, the liquid can be surely boiled and water can be supplied to the container 1, and the effect of preventing water leakage from the water supply port 26 can be obtained even during normal water supply and excessive supply.
[0029]
( Reference Example 5 )
Reference Example 5 of the present invention will be described with reference to FIG.
[0030]
The water supply motor 23b of the water supply pump 23 is installed on the protrusion 6b on the side surface of the vessel body 6, and the impeller 23a that rotates in synchronism with the rotation of the water supply motor 23b is magnetically coupled to the lower portion of the water storage tank 20 facing the water supply motor 23b. Is provided. By the rotation of the impeller 23a, the liquid 2 is pumped through the water supply passage 24 and poured into the water supply port 26.
[0031]
With this configuration, water can be smoothly supplied to the kettle 1, and the effect of controlling the amount and timing of the water supply can be obtained by controlling the drive of the water supply motor 23 b. Further, by arranging the protruding portion 6b on the side surface of the vessel body 6 at the lower part of the water storage tank 20 and disposing the impeller 23a at the upper position, the coaxiality of the water supply motor 23b and the impeller 23a can be adjusted by peripheral components. .
[0032]
( Reference Example 6 )
Reference Example 6 of the present invention will be described with reference to FIG.
[0033]
The liquid 2 in the water storage tank 20 passes through the water supply path 24 by the water supply pump 23 and is temporarily released at the upper portion of the water discharge port 20b, and is poured into the water heater container 1 through the water discharge port 20b and the water supply port 26. And the highest point 24a of the water supply path 24 is configured to be above the water supply port 26 or the water discharge port 20b.
[0034]
With this configuration, an effect of preventing the liquid in the water storage tank 20 from flowing into the water supply port 26 due to the siphon phenomenon can be obtained.
[0035]
( Reference Example 7 )
Reference Example 7 of the present invention will be described with reference to FIG.
[0036]
The position of the water supply port 26 is configured to be provided above the full water position 20 a of the water storage tank 20.
[0037]
With this configuration, it is possible to prevent the liquid in the water storage tank 20 from flowing into the water supply port 26 due to the siphon phenomenon, and to smoothly return the liquid supplied to the water heater 1 to the water storage tank 20 side by a predetermined amount. The effect becomes.
[0038]
( Reference Example 8 )
Reference Example 8 of the present invention will be described with reference to FIG. The basic configuration is the same as that of the first embodiment, and only the differences will be described.
[0039]
The protrusion 6a provided on the side surface of the vessel body 6 is provided with an engaging portion 6c for engaging with the water storage tank 20 in the vertical direction, and the water storage tank 20 is restricted only to be attached and detached by vertical sliding using the engaging portion 6c. It is what.
[0040]
With this configuration, the water storage tank 20 is guided to the engagement 6b and is securely attached to the vessel body 6. Thereby, the adhesiveness of the water supply port 26 and the water storage tank 20 improves, the effect which prevents the water leak from the water supply port 26 is acquired, and also it prevents that the water storage tank 20 falls off from the container body 6 easily. Can do.
[0041]
(Example 2 )
For Example 2 of the present invention will be described with reference to FIG. The basic configuration is the same as that of the first embodiment, and only the differences will be described.
[0042]
The drainage port 22 is connected to the kettle 1 through the water supply channel 21 from the water supply port 26, and the water supply channel 21 has a low passage 28 below the drainage port 22 in a part thereof.
[0043]
With this configuration, the liquid supplied in the low passage 28 in the water supply passage 21 stays and the water supply passage 21 is completely closed, and the steam is generated even when the liquid in the water heater 1 is boiled or the like. An effect of preventing discharge from the water supply port 26 is obtained.
[0044]
( Reference Example 9 )
Reference Example 9 of the present invention will be described with reference to FIG. The basic configuration is the same as that of the first embodiment, and only the differences will be described.
[0045]
A water supply valve 21 for supplying liquid from the water storage tank 20 to the kettle container 1 is provided with a water stop valve 29 for preventing the liquid from flowing out when it falls.
[0046]
With this configuration, an effect of preventing the liquid in the kettle container 1 from flowing out when the container body 6 falls is obtained.
[0047]
As mentioned above, although each Example 1-2 was demonstrated, these can be comprised combining suitably and are not restricted to each Example itself.
[0048]
【The invention's effect】
As described above, according to the electric water heater of the present invention, only a necessary amount of liquid is heated and kept in a water heater container, and the rest is stored in a water storage tank, thereby reducing power consumption and hot water or steam at the time of water injection. It is possible to prevent excessive water supply.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an electric water heater in Example 1, Reference Examples 1 to 3 and Reference Examples 5 to 7 of the present invention. FIG. 2 is a perspective view of the vicinity of a water inlet of an electric water heater in Reference Example 8 of the present invention. FIG. 3 is a cross-sectional view of an essential part of an electric water heater in Reference Example 4, Example 2, and Reference Example 9 of the present invention.
DESCRIPTION OF SYMBOLS 1 Water heater container 1a Full position 2 Liquid 3 Heating body (heating means)
DESCRIPTION OF SYMBOLS 4 Control part 5 Cover body 5a Steam port 6 Body 6a Projection part 6c Engagement part 10 Pump 11 Derived path 12 Derived port 13 Water level sensor 20 Water storage tank 20a Full position 20b Outlet 21 Water supply path 22 Drain outlet 23 Water supply pump 23a Impeller 23b Water supply motor 24 Water supply path 25 Highest point 26 Water supply port 27, 27a Packing 28 Low passage 29 Water stop valve

Claims (1)

A water heater container, a heating means for heating the liquid in the water heater container, and a water storage tank for storing the liquid to be supplied to the water heater container, and the water supply port from the water tank to the water heater container are located below the upper end of the water heater container. The liquid in the water storage tank is poured from the water supply port into the water heating container, and the drainage port is connected to the water heating container through the water supply channel from the water supply port. Electric water heater with passage .

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