JPH06154087A - Electric water heater - Google Patents

Abstract

PURPOSE:To constitute the electric water heater for heating and insulating a contained liquid in which an undesired component in the contained liquid is eliminated efficiently, and also, a liquid at a prescribed temperature can be obtained quickly. CONSTITUTION:The water heater is constituted by providing a valve body 16 provided in the part where the halfway of a series of water channels allowing the lower part of a vessel 2 to communicate with a leading-out port 8 to the outside of a heater body is branched so as to communicate the lower part with the upper part of the vessel 2, a purifier 18 containing a water quality purifying agent 17 and provided in the vicinity of an outlet of a water tube (third water channel 22) to the upper part of the vessel 2, and a cooling means (a heat radiation member 23 and an air blower 24) for a liquid in a circulating water channel (first water channel 20). In such a way, in the course of operation of heating and insulation, the liquid can be allowed to circulate and purified, and also, the liquid in the vessel is cooled in the circulating water channel, and can be allowed to reach quickly a set temperature.

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 that heats and keeps a contained liquid and discharges it outside the body.

[0002]

2. Description of the Related Art Conventionally, attention has been paid to safety, taste, odor, etc. of drinking water, and products such as water purifiers have come to the forefront. Also in electric water heaters, the number of electric water heaters in which the boiling time is extended to increase the removal rate of chlorine and the like in tap water, and a purifier having a filter element is detachably provided is increasing (for example, JP-A-3-277321). ).

Beverages using water have various temperatures suitable for them. For example, hot water such as coffee is better as hot as possible, while hot water of about 60 to 70 ° C. is suitable for gyokuro tea. The invention of an electric water heater that can stably obtain hot water at a desired temperature has been made. (See, for example, JP-A-3-297418).

A conventional electric water heater will be described below. As shown in FIG. 2, the opening of the container 2 having an open upper surface provided in the main body 1 is covered with a lid 3, and the liquid in the container 2 is heated by a heating element 4 and control means (not shown). Is heated and kept at a predetermined temperature.

The liquid in the container 2 is sucked from the suction port 7 of the pump 6 by the operation of an electric pump 6 driven by a motor 5 which is a means for discharging the liquid to the outside of the body.
The water is discharged to the outside of the body through a water pipe 9 that connects the pump 6 and the outlet 8 to the outside of the body. Reference numeral 10 in the drawing is interlocked with a knob 11 of a switch operating portion for controlling the operation of the motor 5.

Further, as shown in FIG. 3, on the panel portion of the operation portion, a switch 12 for selecting the heat retaining temperature of the liquid in the container 2 (hereinafter referred to as heat retaining selecting switch) 12 is used to indicate a high temperature. Second lamp 1 indicating 13,85 ℃
A third lamp 15 for indicating 4, 70 ° C., a knob 11 and the like are provided.

When the hot water boiled by the electric water heater configured as described above is to be kept warm at a temperature of about 85 ° C. which is suitable for sencha etc., the warming temperature should be set to 85 ° C. by the heat keeping selection switch 12. For example, the heat retaining function of the heating element 4
Pause until the temperature of the hot water in container 2 reaches approximately 85 ° C, then
In order to maintain the temperature of about 85 ° C., the hot water temperature control is restarted by a heat retention operation such as intermittent heating.

[0008]

However, in the above-mentioned conventional configuration, when tap water or the like is fed into the container 2 to boil water, in order to remove chlorine and the like in the tap water and purify it, the boiling time is increased. It needs to be extended and requires several minutes of boiling time to purify it to a sufficiently satisfactory level, increasing the amount of power consumption and filling the room with steam, and when adding new water to bring it to a boil. In addition, since the temperature of the water accumulated in the water pipe 9 hardly rises, chlorine, musty odor, and trihalomethane contained in the water remain almost in their original state, so chlorine is not necessary for the first hot water to be derived. In addition, there is a problem that there is a component, and in addition, when the hot water that has been boiled once is naturally cooled when it is kept at a temperature of around 85 ° C suitable for sencha, etc. Has a problem that it takes a long time for the hot water in the container 2 to drop to the set temperature, in combination with the structure that the heat insulating efficiency is improved by reducing the power consumption during heat retention. It was

The present invention solves the above-mentioned conventional problems, and provides an electric water heater capable of efficiently removing unnecessary components in a contained liquid and capable of bringing boiling water to a predetermined temperature in a short time. To aim.

[0010]

In order to achieve this object, the electric water heater of the present invention has a series of water channels connecting the lower part of the container and the outlet to the outside of the container to the upper part of the container. A valve body disposed in a branched portion, a purifier containing a water purification agent disposed near the outlet of the water pipe to the upper part of the container, and means for cooling the liquid in the circulating water channel. is there.

[0011]

In this structure, the liquid in the container is led out or circulated to the outside of the vessel, and the liquid is circulated and purified during the operation such as heating and heat retention. The liquid is cooled in the circulating water channel to quickly reach the set heat retention temperature.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In one embodiment of the present invention, the same components as those described in the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, the feature of this embodiment lies in that the middle of a series of water channels connecting the lower part of the container 2 and the outlet 8 to the above-mentioned conventional structure communicates with the upper part of the container 2. The valve body 16 disposed in the branched portion and the container 2
This is because a purifier 18 containing a water purification agent 17 such as activated carbon disposed near the outlet of the water pipe to the upper part of the above, and a means for cooling the liquid in the circulating water channel are added. That is, the pump 6
The suction port 7 is communicated with the lower portion of the container 2, and the discharge port 19 of the pump 6 is communicated with the valve body 16 by the first water passage 20.

From the valve body 16, the water channel is a second water channel 21,
It branches into the third water passage 22, the second water passage 21 communicates with the outlet 8 to the outside of the vessel, and the third water passage 22 communicates with the purifier 18 arranged in the upper portion of the container 2.

The cooling means receives the heat of the liquid in the first water passage 20 disposed in the middle of the first water passage 20 and dissipates it into the air. The heat dissipating member 23 is made of a material having high heat conductivity, and the blower 24 promotes heat dissipation of the heat dissipating member 23.

The operation of the electric water heater constructed as above will be described below. The description of the same operations as those described in the conventional example will be omitted.

The operation of the valve element 16 is interlocked with the operation of the knob 11, and when the knob 11 is not operated, that is, when the liquid in the container 2 is not drawn out of the container, FIG. As shown in (1), the first water passage 20 and the third water passage 22 are in communication with each other, and the lower portion and the upper portion of the container 2 are in communication with each other to form a circulating water passage.

In this state, when the pump 6 is operated, the liquid in the container 2 and the pump 6 are sent to the first water passage 20 and are returned to the container 2 through the valve body 16 and the third water passage 22. At this time, the liquid passes through a purifier 18 containing a water purification agent 17 such as activated carbon, and unnecessary components such as chlorine are removed.

On the other hand, when the knob 11 is being operated, that is, when the liquid in the container 2 is discharged to the outside of the container, as shown in FIG.
The first water channel 20 and the second water channel 21 communicate with each other, and the lower portion of the container 2 communicates with the outlet 8 to the outside of the container.

For example, in order to reach the preset heat retention temperature of the liquid that has been boiled once, the heat retention function of the heating element 4 is stopped and the pump 6 is operated to circulate the liquid in the state where the above-mentioned circulation water channel is formed. At the same time, the blower 24 is operated to blow air to the heat radiating member 23, whereby the liquid in the circulating water channel recirculates into the container 2 while being deprived of heat by the heat radiating member 23. By continuing this operation until the set heat retention temperature is reached, it is possible to cool to the set temperature in a short time.

As described above, according to this embodiment, the liquid in the container 2 is branched to the outside of the container body, and the valve body 16 disposed in the branched portion is operated to discharge the liquid. Alternatively, by switching to circulation, a purifier 18 containing a water purification agent 17 is provided near the outlet of the circulating water passage, and a means for cooling the liquid in the circulating water passage is provided, so that heating, heat retention, etc. Since the liquid can be circulated and purified during operation, it is not necessary to extend the boiling time as in the conventional case, and the liquid accumulated in the first water channel 20 is also circulated, so that it is the same as the liquid in the container 2. Can be purified. Further, since the valve body 16 is operated in conjunction with the liquid derivation operation, the valve body 16 does not operate by setting the water channel to the circulating water channel except during the derivation operation, that is, when the valve body 16 is not operating. Even if a state occurs, there is no danger that the liquid will be discharged to the outside of the body during circulation. Further, the liquid in the container 2 can be cooled in the circulating water channel and then recirculated back into the container 2 to quickly reach the set heat retention temperature.
Therefore, even if the container 2 is made of a material or a structure having a high heat insulating effect, it does not affect the cooling effect, so that the liquid can be quickly cooled while reducing power consumption.

Further, since the liquid passes through the purifier 18 containing the water purification agent 17 during cooling, removal of unnecessary components is promoted, and hot water at a relatively low temperature such as gyokuro tea or milk given to infants is heated. It can be tasty and hygienic when needed. In the present embodiment, the purifier 18 is arranged at the outlet of the third water passage 22 above the container 2, but the water purifier 1 is arranged so that the liquid passes through the first water passage 20 of the circulation water passage.
Even if 8 is provided, the same effect can be obtained.

Further, in this embodiment, the heat radiating member 23 and the blower 24 for promoting the effect are provided as the cooling means. However, for example, cooling by only the heat radiating member 23 or cooling by the blower 24 alone may be used. Needless to say, cooling by another method may be used.

[0025]

As is apparent from the above description, according to the present invention, a portion of a series of water passages connecting the lower part of the container and the water guide port to the outside of the body is branched so as to communicate with the upper part of the container. It is unnecessary in the stored liquid due to the structure in which the valve body disposed in the above, the purifier containing the water purification agent disposed near the outlet of the water pipe to the upper part of the container, and the means for cooling the liquid in the circulating water channel are provided. It is possible to realize an excellent electric water heater in which components are efficiently removed and a liquid having a predetermined temperature is promptly obtained.

[Brief description of drawings]

FIG. 1 (a) is a schematic cross-sectional view showing a circulating state of a liquid stored in an electric water heater according to an embodiment of the present invention. FIG. 1 (b) is a schematic cross-sectional view of a main part showing a state of discharging a liquid stored in the electric water heater.

FIG. 2 is a schematic sectional view of a conventional electric water heater.

FIG. 3 is a plan view of a panel portion of an operation unit of the electric water heater.

[Explanation of symbols]

 2 container 4 heating element 5 motor (deriving means) 6 pump (deriving means) 8 outlet 11 knob (operating part) 16 valve body 17 water purification agent 18 purifier 20 first water channel 21 second water channel 22 third water channel 23 heat dissipation Member (cooling means) 24 Blower (cooling means)

Claims (2)

[Claims] 1. A container for containing a liquid, a heating element for heating and retaining the temperature of the liquid in the container, a discharging means for discharging the liquid to the outside of the body, and an operation section for controlling the operation of the discharging means. In the electric water heater, a valve body disposed in a branched portion so as to communicate with the upper part of the container in the middle of a series of water passages connecting the lower part of the container and the outlet to the outside of the container, An electric water heater equipped with a purifier containing a water purification agent disposed near the outlet to the upper part of the container and a means for cooling the liquid in the circulating water channel. 2. The electric water heater according to claim 1, wherein the purifier containing the water purification agent is arranged so that the liquid passes through a circulating water channel.