JPH0646430Y2 - Electric pot boiling processing circuit - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiling treatment circuit for an electric pot which can cut the chlorine contained in the tap water when the tap water is boiled with the electric pot.

[0002]

2. Description of the Related Art The above-mentioned electric pot is provided with a thermoswitch for boiling water, and an electric circuit is formed so that when the hot water boiled, the thermoswitch operates to open the power source of the main heater. However, in the above-mentioned circuit configuration, the set temperature of the water heating thermoswitch is set to 95 ° C to 97 ° C in hot water so that the water heating thermoswitch can be reliably opened. It is not possible to use boiling water at 100 ° C, as in the case of making milk. Therefore, in order to obtain boiling water, in addition to the above-mentioned boiling thermostat switch, a boiling thermoswitch that operates at the boiling temperature of the content liquid and a changeover switch for operating this thermoswitch are provided to boil. When the hot water is obtained, the changeover switch is turned on so that the boiling thermoswitch operates.

That is, the above-mentioned boiling thermoswitch is configured to operate at the ambient temperature in the steam passage connecting the inside of the pot and the atmosphere, and the temperature setting of the boiling thermoswitch is set to the boiling (100 The temperature of the main heater is set to an ambient temperature corresponding to the temperature C), and the boiling thermoswitch detects and operates to turn on the power source of the main heater immediately.

On the other hand, in order to cut (heat-treat) the tap water of the tap water with the above-mentioned electric pot, the boiling state should be maintained for 3 minutes to 5 minutes.
It is necessary to continue for about a minute, but as mentioned above, the boiling thermoswitch opens the electric circuit immediately when the content liquid boils and shuts off the power of the main heater. Can not.

Therefore, in order to perform the above-mentioned scaly cut processing, generally, a microcomputer is used to measure a predetermined time to perform boiling processing, but the microcomputer is used only for the scaly cut processing. However, there is a problem that the cost is too high.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a boiling processing circuit for an electric pot, which is capable of satisfactorily cutting a bleaching powder at a low cost.

[0007]

According to the present invention, a steam passage for connecting the inside of the pot and the atmosphere is formed, and a boiling thermoswitch for detecting boiling of the pot content liquid at the ambient temperature in the steam passage is provided. An electric pot that opens the power source of the main heater based on the operation of the boiling thermoswitch,
A thermostat for kalki cut that detects the ambient temperature in the steam passage is provided, and the temperature detected by the thermoswitch for kalki cut is set to a predetermined temperature high temperature side with respect to the temperature detected by the thermoswitch for boiling. A cut processing thermo switch is connected in parallel to the boiling thermo switch, and a changeover switch for selecting the operation of these thermo switches is a boiling processing circuit of an electric pot connected in series to both thermo switches. To do.

[0008]

In the boiling processing circuit of the electric pot of the present invention, when performing a kalki cut process, if the changeover switch is turned on so that the kalki cut thermoswitch operates, the kalky cut thermoswitch can be operated as a boiling thermoswitch. Since the operation is delayed by the detected temperature setting set on the high temperature side from the operation time point, a predetermined boiling duration can be obtained with this delay time, and the kalki cut process can be performed.

[0009]

As a result of the above, according to the present invention, it is possible to satisfactorily perform the Kalki-cut processing by using an inexpensive thermoswitch instead of the conventional microcomputer, so that the cost can be reduced.

[0010]

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

The drawing shows an electric pot, in FIG.
The electric pot 10 is composed of a main body 11 and a lid body 12, a pot 13 having an open upper surface is housed inside the main body 11, and a heater 14 having a main heater and a heat-retaining heater is attached to an outer periphery of a lower portion of the pot 13. Then, the content liquid in the pot 13 is boiled and heated by the heating of the heater 14, and the content liquid is stored in the pot 13
17 through the communication pipe 15 from the communication port 15 at the bottom of the
Be poured out.

A rear end of the lid 12 is pivotally attached to the upper surface of the main body 11 by a support shaft 18, and a front end of the lid 12 is detachably fixed by an appropriate fixing means. An airtight lid 19 is fixed to the lower surface of the lid body 12 corresponding to the pot 13, and a sealing 20 for sealing the rim of the pot 13 is fitted to the peripheral edge of the airtight lid 19, and the pot 13 secures the pot 13 with the sealing 20. To be airtight.

A steam passage 22 is formed inside the airtight lid 19 via a ball 21. The steam passage 22 is a horizontal passage 22 extending from the central position to the rear side (support shaft 18 side).
a and a vertical passage 22b extending upward from the horizontal passage 22a and communicating with the atmosphere.

The end of the above-mentioned horizontal passage 22a is opened to be exposed inside the main body 11, and on the main body 11 side, the sealing 23 is fitted to the rim portion.
Seal the end of the horizontal passage 22a on the front side of the
On the rear surface side, the exposed peripheral edge of the heat conducting plate 24 is sealed so that the heat conducting plate 24 faces each other.
It is fitted and fixed to 5.

As shown in FIGS. 2 and 3, the heat conducting plate 24 described above is made of, for example, aluminum having a high heat conductivity, and is formed on the back surface side of the heat conducting plate 24 facing the horizontal passage 22a. Is equipped with a boiling thermo-switch 26, and is further equipped with a kalki cut thermo-switch 27 below the horizontal passage 22a.

Each of the above-mentioned thermoswitches 26 and 27 operates by detecting the heat of the heat conducting plate 24 heated in the atmosphere of the steam passage 22 as the ambient temperature in the steam passage 22, and the boiling thermoswitch 26 operates in the pot 13. For example, the detection temperature is set to about 85 ° C. so that the liquid content of boiled and operates about 30 to 60 seconds later, and the thermoswitch 27 for kalki cut is used after the liquid content of the pot 13 boiled. About 15
0 to 210 seconds, and about 120 to 150 seconds after the boiling thermoswitch 26 is operated.
For example, it is set to a high temperature side with respect to the boiling thermoswitch 26 having a detection temperature of about 95 ° C. so as to operate after a second.

In FIG. 1, an air pump 31 is built in the inside of the lid 12 described above, and since the air pump 31 has a well-known structure, a detailed description thereof will be omitted, but an operating portion 32 at the center of the upper surface. When is pressed down, the lower valve material 33 seals the periphery of the opening 34 at the starting end of the horizontal passage 22a in conjunction with this, and then the compressed air of the air pump 31 is sent into the pot 13 to inject the content liquid. When the air pump 31 is ejected and the pressing of the operation portion 32 is released, the air pump 31 returns and the peripheral edge of the opening portion 34 is opened.

FIG. 4 shows a boiling processing circuit for heating and controlling the above-mentioned heater 14. The above-mentioned heater 14 has a main heater 14a for boiling the content liquid and a heat-retaining heater 14b for keeping the content liquid warm. Consisting of these heaters 14
a and 14b are connected in parallel, and the main heater 14a is connected in series with the boiling water thermostat 41 and the temperature overheat prevention thermoswitch 42 to the power supply lines 43 and 44, and the warming heater 14b is connected to the above-mentioned temperature. It is connected to the power supply lines 43 and 44 in series with the excessive rise prevention thermoswitch 42. Also, the water heating lamp L1 and the heat retention lamp L
2 is connected in series to the power supply lines 43 and 44, and the intermediate point thereof is connected to the intermediate point between the main heater 14a and the thermostat 41 for boiling water.

The above-mentioned boiling water thermostat 41 is mounted directly on the outer peripheral surface of the pot 13 to detect the temperature of the content liquid,
The detection temperature is set to about 95 ° C to 97 ° C of the content liquid. In addition, the above-described overheat prevention thermoswitch 42 prevents the overheat of the heater 14.

The boiling thermoswitch 26 and the kalki cut thermoswitch 27 described above are connected in parallel, and the changeover switch 45a is connected to one end thereof, and the relay switch 46 is connected to the other end of the changeover switch 45a. The other end of the relay switch 46 is connected to the one power supply line 43.

The above-mentioned relay switch 46 has a first normally open contact Xa-1 and a second normally open contact Xa-2, and the first normally open contact Xa-1 is both for boiling and for calcination. It is connected to an intermediate position between the contacts of the thermoswitches 26 and 27 and the above-mentioned overheat prevention thermoswitch 42, and the second normally open contact Xa-2 is used for both the boiling and kalky cut thermoswitches 26. , 27 and the intermediate point between the main heater 14a and the boiling water thermostat 41 described above.

Boiling lamp L3 and Kalki cut lamp L4
Are connected in parallel, and a changeover switch 45b is connected to one end of these, and the other end of the changeover switch 45b is connected to one power supply line 43.

The above-mentioned changeover switch 45a and the above-mentioned changeover switch 45b are double-pole double-throw changeover interlocking changeover switches. For example, by incorporating an alternator mechanism, the changeover switches 45a and 45b operate while maintaining their respective changeover positions. Also,
At the respective switching positions, the boiling thermo switch 26 and the boiling lamp L3 are connected, and the kalki cut thermo switch 27 and the kalki cut lamp L4 are connected correspondingly.

A start button switch 47 is provided at an intermediate position between the connection point between the boiling lamp L3 and the khaki cut lamp L4 and the above-mentioned thermoswitch 42 for preventing overheating.
And the connection point of the boiling lamp L3 and the khaki cut lamp L4, the contact points of both the above-mentioned boiling and khaki cutting thermoswitches 26 and 27, and the above-mentioned overheat prevention thermoswitch 42. It connects with the intermediate position. The start button switch 47 described above is interlocked with the changeover switches 45a and 45b described above, and is switched to the changeover switch 45a or 45b each time the start button switch 47 is pressed and operated. In the circuit, R1, R2, R3 and R4 are resistors.

In the boiling treatment circuit thus constructed, when the content liquid in the pot 13 is boiled from room temperature,
When the power supply lines 43 and 44 are connected to an external power supply, both thermoswitches 41 and 42 for boiling water and for preventing excessive temperature rise
Since is closed, the main heater 14a and the heat retention heater 14b are energized to heat and boil the content liquid. Note that the water heating lamp L1 is turned on during the water heating (however, since both ends of the heat retention lamp L2 have the same potential, they are not turned on).

When the content liquid reaches a predetermined hot water temperature, the boiling water thermostat 41 is opened, so that the main heater 14a is de-energized, the heat retaining lamp L2 is turned on, and both ends of the hot water heating lamp L1 have the same potential. Turn off the light.

When boiling the content liquid, the start button switch 47 is operated to operate the changeover switches 45a and 45b so that the boiling thermoswitch 26 and the boiling lamp L3 side are selected. Since the relay switch 46 is energized when the above-mentioned start button switch 47 is operated, the contacts Xa-1 and Xa-2 are closed, and the relay switch 46 is self-held and at the same time the contact Xa.
-2 energizes the main heater 14a to heat the content liquid.

The vapor generated due to the temperature rise of the content liquid is discharged into the atmosphere through the vapor passage 22, but when the content liquid boils, the atmosphere in the vapor passage 22 also rises accordingly. The temperature heats the heat conducting plate 24 and is conducted to each thermoswitch 26, 27. Then, when the atmosphere rises to a temperature corresponding to the boiling of the content liquid, the boiling thermoswitch 26 operates, for example, operates in about 30 seconds to 60 seconds from the boiling of the content liquid to open the relay switch 46, By opening the contacts Xa-1 and Xa-2, the main heater 14a is de-energized and the heating is stopped, and as a result, the boiling content liquid can be obtained.

Further, in the case of cutting the bleaching of the content liquid, the start button switch 47 is operated to operate the bleaching thermo switch 27 and the bleeding cut lamp L.
Changeover switches 45a and 45b so that the 4 side is selected
To operate. When the start button switch 47 is operated, the relay switch 4 is operated in the same manner as in the case of boiling.
Since 6 is energized, the contacts Xa-1 and Xa-2 are closed and the relay switch 46 is self-held and at the same time,
The main heater 14a is energized by the contact Xa-2 to heat the content liquid.

Based on the temperature rise of the content liquid, the steam passage 2
Although the atmosphere temperature in 2 also rises, since the set temperature of the kalky cut thermoswitch 27 is set to a higher temperature side than the boiling thermoswitch 26, the kalky cut thermoswitch 27 is used for the boiling Thermo switch 2
Operates over 6 hours.

That is, the boiling thermoswitch 2 described above.
6 is set to operate in about 30 to 60 seconds from boiling of the content liquid, whereas this Kalki cut thermoswitch 27 is set to operate in about 150 to 210 seconds, Kalki can be cut by keeping boiling during this period.

When the Kalki cutting thermoswitch 27 operates as described above, the relay switch 46 is opened and the contacts Xa-1 and Xa-2 are opened, whereby the main heater 1
The energization of 4a is cut off and the heating is stopped.

As described above, in the above-described embodiment, since the time for cutting the bleaching is obtained by the operation of the thermoswitch 27 without using a microcomputer, the circuit structure can be constructed at low cost.

In the above embodiment, the thermoswitch 27 for kalki cut is connected to the steam passage 2 via the heat conduction plate 24.
Although it is provided at a position apart from 2, it may be provided at a position facing the steam passage 22 similarly to the boiling thermoswitch 26. Further, the heat conduction plate 24 is omitted and the direct steam passage 2 is provided.
2 thermo switches for boiling and kalki cut 2
The detection surfaces of 6, 27 may be exposed and arranged.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an electric pot.

FIG. 2 is a side view of a thermo switch mounting portion.

FIG. 3 is a rear view of the thermoswitch mounting portion.

FIG. 4 is a boiling processing circuit of an electric pot.

[Explanation of symbols]

 10 ... Electric pot 13 ... Pot 14a ... Main heater 22 ... Steam passage 26 ... Boiling thermoswitch 27 ... Chalk cut thermoswitch 45a, 45b ... Changeover switch

Claims (1)

[Scope of utility model registration request] 1. A boiling thermoswitch for detecting boiling of a liquid contained in the pot at an atmosphere temperature in the steam passage, the steam passage connecting the inside of the pot and the atmosphere, and the operation of the boiling thermoswitch. An electric pot for opening the power source of the main heater based on the above, wherein a thermoswitch for kalki cut that detects the ambient temperature in the steam passage is provided, and the detected temperature of the thermoswitch for kalki cut is set to the boiling thermoswitch. The temperature is set to the high temperature side by a predetermined temperature with respect to the detection temperature of, and the thermoswitch for kalki cut is connected in parallel to the thermoswitch for boiling, and a changeover switch for selecting the operation of these thermoswitches is provided for both thermoswitches. Boiling processing circuit for electric pots connected in series.