JPH0787823B2 - Electric coffee heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electric coffee boiler having a function of removing residual chlorine and organic substances contained in tap water.

2. Description of the Related Art Most conventional electric coffee boilers have a function of removing residual chlorine, trihalomethane, diosmin, and other organic substances contained in tap water.

Problems to be Solved by the Invention Conventional electric coffee boilers do not have a function of removing residual chlorine, trihalomethane, diosmin, and other organic substances contained in tap water, and thus an offensive odor is generated, resulting in aroma of coffee. 、 I had a problem that spoil the taste. Therefore, in order to eliminate this inconvenience, it is possible to equip the removal function with activated carbon, but in this case, from the point of sustaining the effect, it is necessary to replace the activated carbon and use a large amount of activated carbon. Therefore, there is a problem that the cost becomes high.

The present invention is to solve the above-mentioned conventional problems, and it is possible to remove residual chlorine and organic substances contained in tap water, there is no need to replace the removal function, and the cost is low and delicious coffee. In addition, if the reactivation of the removal function is not completed, the user can be warned of it, and an electric coffee heater that also functions as an indication of power to the power supply It is intended to be provided.

Means for Solving the Problems In order to solve the above problems, the present invention has a tank for storing water, one end of which is connected to the tank via a check valve equipped on the bottom surface of the tank, and which has activated carbon incorporated therein. A heating pipe, a heater, and a heater block including the heater and a receiving container for receiving the coffee liquid, and a heating water connected to the other end of the heating pipe, and the heated water is used as a coffee extraction container. A discharge pipe leading to the device, a neon lamp for indicating the power supply to the appliance, a control device for controlling the blinking of the neon lamp, and a thermostat that operates by detecting the temperature of the heater block. The device comprises a charging circuit connected in parallel with the heater and comprising a resistor and a capacitor, and a resistor connected with the capacitor of this charging circuit in parallel and comprising a neon lamp. A discharge circuit is provided, and the thermostat is connected in series with the capacitor.

Operation According to the above configuration, when the tap water passes through the heating pipe again, residual chlorine contained in the tap water and organic substances such as trihalomethane and diosmin are adsorbed by the activated carbon and removed. When all the water in the tank is discharged, the heater block goes into an idle state and the temperature rises rapidly. In this case, since the activated carbon is also heated, residual chlorine and organic substances adsorbed on the activated carbon are thermally decomposed and released into the air in the form of gas, so that the activated carbon is reactivated. By reactivating the activated carbon in this way, the effect lasts semipermanently, so it is not necessary to replace it, and only a very small amount is required. In addition, a short time after the completion of the derivation of water, the thermostat opens in order to maintain the temperature of the coffee accumulated in the receiving container at an appropriate temperature, thereby controlling the power supply to the heater. At this time, the activated carbon has reached the reactivation temperature sufficiently, and the required time is maintained by the residual heat of the heater block. Also, since the neon lamp blinks until the thermostat opens, this blinking can give a warning to the user that the coffee is being extracted or the active substance has not been reactivated, and therefore the power is turned off before the coffee is extracted. There is no dripping. Further, according to the present invention, since the neon lamp also serves as an indication of power supply to the power source of the appliance, the structure can be simplified and the cost can be reduced.

Example Hereinafter, one example of the present invention will be described with reference to the accompanying drawings. In FIGS. 1 to 5, reference numeral 1 is a tank for containing water, and a check valve 2 that opens only in the outflow direction is provided at the bottom of the tank 1. A heater block 3 includes a heater block 3 and a heater 4, one end of which is connected to the bottom of the tank 1 through a check valve 2 and which contains a heating pipe 5 for introducing water into the heating unit. In addition, a plurality of honeycomb-shaped activated carbons 6 are incorporated on the inflow side of the heating pipe 5 via a spacer 7, and the other end of the heating pipe 5 is a discharge pipe 9 for drawing heated hot water to a coffee extraction container 8. Connected. The heater block 3 detects the temperature of the thermostat Th ₁ that controls the energization of the heater 4 and the temperature of the activated carbon 6 in order to keep the coffee liquid accumulated in the coffee receiving container 10 in a heat-retaining state. It is equipped with a thermostat Th ₂ that opens when it reaches a temperature that pyrolyzes the substance. The thermostat Th ₂ is connected in parallel with the heater 4 and the fuse F, and is connected in series with a charging circuit including a resistor R ₁ , a diode D and a capacitor C. Further, a discharge circuit composed of a resistor R ₂ and a neon lamp L is connected in parallel with the capacitor C and the thermostat Th ₂ . When the thermostat Th ₂ is closed, the capacitor C is charged, and when the capacitor C reaches the discharge voltage of the neon lamp L, discharging is performed, the neon lamp L is lit for a short time, and then the neon lamp L is turned on again. It is turned off until the capacitor C is charged. This blinking state continues until the thermostat Th ₂ opens, and the thermostat T 2
When h ₂ opens, the neon lamp L is maintained in the lighting state. S is a main power switch. Further, the neon lamp L also serves as a lamp for indicating the energization of the power source of the device.

Next, the operation of the above configuration will be described. First, when water is put into the tank 1 and the main power switch S is closed, the heater 4 generates heat and heats the water in the heating pipe 5. When the water starts to boil locally, the hot water in the heating pipe 5 and the discharge pipe 9 is pushed out to the coffee extract container 8 by the vapor pressure generated thereby. Then, after the steam is discharged to the outside, the pressure of the heating pipe 5 decreases, and the tank 1 is newly added.
More water flows in. Also, when water passes through the activated carbon 6,
Activated carbon 6 contains residual chlorine contained in water, trihalomethane,
Adsorbs organic substances such as diosmin. This operation is repeated until the water in the tank 1 is exhausted. And tank 1
When the water in the inside is exhausted, the heater block 3 is in an idle state and the temperature rises rapidly. When this reaches a temperature at which the coffee liquid accumulated in the receiving container 10 can be maintained at an appropriate temperature, the thermostatter Th ₁ will be intermittent after that. Then, the appropriate temperature is maintained until the main power switch S is turned off.

On the other hand, the neon lamp L blinks until the heater block 3 is put into an idle state and the activated carbon 6 is reactivated after the main power switch S is first closed, that is, until the thermostat Th ₂ opens, and thereafter. It lights up. Since the temperature at which activated carbon begins to reactivate is usually 150 ° C. or higher, it is already at an appropriate temperature when the thermostat Th ₁ opens. Therefore, residual chlorine contained in tap water and organic substances such as trihalomethane and diosmin can be removed each time it is used, and the effect is semipermanently maintained. Further, since the neon lamp L also serves as an indication of power supply to the power source of the device, the structure can be simplified and the cost can be obtained at low cost.

Effects of the Invention According to the present invention, as is clear from the description of the above embodiments,
Residual chlorine contained in tap water and organic substances such as trihalomethane and diosmin can be removed by activated carbon, so that tasty coffee that is safe and has no odor can be obtained. Further, since the activated carbon is reactivated, it is not necessary to replace the activated carbon and the effect can be exhibited semipermanently. Moreover, since this activated carbon requires a small amount, it can be provided at low cost. Furthermore, during extraction of coffee or when activated carbon is not at the optimum temperature for reactivation, the neon lamp blinks to warn the user, so there is no misuse such as the power being turned off during the process. . Moreover, since the neon lamp also serves as an indication of power supply to the power source of the device, the structure can be simplified and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an external perspective view of an electric coffee boiler showing an embodiment of the present invention, FIG. 2 is a sectional view of the electric coffee heater, and FIG.
FIG. 4 is a circuit diagram of the electric coffee heater, FIG. 4 is a top view of a heater block in the electric coffee heater, and FIG. 5 is a perspective view of activated carbon. 1 ... Tank, 2 ... Check valve, 3 ... Heater block,
4 ... Heater, 5 ... Heating pipe, 6 ... Activated carbon, 8 ...
… Coffee extract container, 9… Discharge pipe, 10… Receiving container, Th ₂ … Thermostat, L… Neon lamp, R ₁ ,
R ₂ ... resistor, C ... capacitor.

Claims (1)

[Claims] 1. A tank containing water, a heating pipe having one end connected to the tank via a check valve mounted on the bottom surface of the tank, and containing activated carbon, a heater and the heating pipe, And a heater block configured to mount a receiving container for receiving the coffee liquid, a discharge pipe connected to the other end of the heating pipe and for guiding the heated hot water to the coffee extraction container, and energizing the power source of the appliance. A neon lamp for displaying, a control device for controlling the blinking of the neon lamp, and a thermostat that operates by detecting the temperature of the heater block, the control device is connected in parallel with the heater, and a resistor and A charging circuit consisting of a capacitor,
An electric coffee heater which is connected in parallel with a capacitor of the charging circuit, includes a discharge circuit composed of a resistor and a neon lamp, and has the thermostat connected in series with the capacitor.