JPH0625237Y2 - Electric hot water storage container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot water storage container called an electric pot for home use, and particularly to a boiling mode for boiling the content liquid, a heat retention mode for keeping the content liquid at a predetermined temperature, and the boiling. The present invention relates to an electric hot water storage container having a timer setting mode in which the boiling start time is delayed so as to end at the timer set time.

[0002]

2. Description of the Related Art In a conventional electric pot having the above-mentioned operation mode, the content liquid is boiled at the initial stage of water supply, at the time of reboiling, and at the time of setting the timer. Since the initial boiling of the content liquid takes a long time, the calorific value of the heater in the boiling operation is uniformly increased so as to finish this in a short time as compared with that during the heat retention.

[0003]

In the boiling water in the timer setting mode, in most cases, the content liquid is boiled while sleeping, and the first boiling content liquid is obtained, so that coffee or tea can be obtained. Makes it possible to extract immediately.

However, in the setting of the heating value of the heater as described above, the boiling water noise is remarkable when the boiling point is approaching, and in the timer setting mode, the user feels uncomfortable before the timer setting time and prevents a deep sleep until the setting time. In addition, it will be a great nuisance to those who do not wake up at this set time.

In view of this, the present invention focuses on the fact that there is sufficient time for boiling water when the timer is set, and in this case, boiling water is performed slowly, without affecting the early boiling in the normal case. It is an object to solve the above-mentioned conventional problems.

[0006]

In order to solve the above problems, the present invention has a boiling mode in which the content liquid is boiled,
In an electric hot water storage container having a warming mode for keeping the content liquid at a predetermined temperature and a timer setting mode for delaying the boiling operation start time so as to finish the boiling at the timer setting time, boiling in the timer setting mode The heat generation amount of the heater for operation is set lower than the heat generation amount of the heater for boiling operation in other cases.

[0007]

In the above-described structure of the present invention, the boiling operation of the content liquid in the timer setting mode is performed with a heater heat generation amount lower than the heater heat generation amount in the other boiling operation.
Boiling can be performed gently and quietly using the timer setting time, and the early boiling characteristics of the boiling operation other than when the timer is set are not impaired.

[0008]

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

This embodiment shows the case of an electric pot capable of boiling water and pouring the content liquid by a non-pressurized type electric pump. As shown in FIG. 1, the inner container 2 in which the heater 61 is applied to the lower surface of the bottom is housed in the outer case 3 to form the body 1.

The inner container 2 receives an upper end flange by a shoulder member 4 made of synthetic resin, which is forcibly fitted to the upper end of the outer case 3.

A bottom ring 5 made of synthetic resin is applied to the lower end of the outer case 3, and the bottom ring 5 and the bottom of the inner container 2 are connected by a connecting fitting (not shown) to form the outer case 3 and the inner container 2. And the bottom ring 5 are integrated with each other. A bottom lid 10 is attached to the opening of the bottom ring 5 by fitting a plurality of claws and fixing it with a screw at one place. The bottom lid 10 is rotated at its outer peripheral portion by a plurality of claws 8 provided on the bottom lid 10. The seat body 9 is rotatably fitted so that the body body 3 can be rotated on the rotary seat body 9 when the body body 1 is stationary.

A pouring path 11 for pouring the content liquid is connected to the bottom of the inner container 2. The pouring path 11 is a space between the inner container 2 and the outer case 3 and rises up into a beak-shaped projection 12 provided at the front part of the shoulder member 4, and at this part, U
The discharge port 19 is bent downward and opens downward. A pouring pump 13 for feeding the content liquid flowing into the pouring path 11 to the discharge port 19 is provided in a portion of the pouring path 11 below the inner container 2, and is driven by a motor 14.

The content liquid discharged from the discharge port 19 is once exposed to the atmosphere and then provided on a lower cover 15 attached to the front part of the outer case 3 which is fitted to the lower side of the beak-shaped protrusion 12. The liquid is received by the liquid injection guide 16, guided by the liquid injection guide 16, and injected. The liquid injection guide 16 has a double pipe structure, and the liquid to be discharged is easily opened to the atmosphere, and at the time of liquid injection, the outside air is sucked in to form a fine foam in the liquid injection together with the foam breaking net 20 to be extremely quiet. Moreover, it is possible to inject liquid without bounce.

The liquid injection guide 16 is detachably attached to the lower cover 15 by a screwing portion 18 to an opening provided therein. Further, the rising portion of the pouring path 11 has the same liquid level as the inner container 2, and the liquid amount detecting unit 21 for detecting the liquid amount by the capacitance method or the photo sensor method detects three points by three photo sensors. It is provided by the method.

A water shutoff valve 22 at the time of tipping is provided immediately upstream of the bent portion of the spout passage 11.

A heat shield plate 24 is screwed under the bottom of the inner container 2 using a metal fitting 23, and a restraining spring 28 is sandwiched between the heat shield plate 24 and the back side of the heater 61. 61 is pressed against the bottom surface of the bottom of the inner container 2. The motor 14 is attached to a part of the heat shield plate 24.

A temperature sensor 33 for detecting the temperature of the content liquid is provided in the central through hole of the heater 61, and a holding plate 35 screwed to the heat shield plate 24 holds the temperature sensor 33 through the heat shield wall. is doing.

The bottom ring 5 is provided with a circuit housing box 41. The circuit housing box 41 includes a lid portion 42 integrally formed with the bottom ring 4, and a container portion 44 attached to the lid portion 42 from below. A seal packing 47 is sandwiched at a joint between the container portion 44 and the lid portion 42 to form the circuit housing box 42 as a hermetic container. This makes the circuit board 48 housed in the circuit housing box 41 waterproof enough.

A body lid 62 is provided on the upper end of the body 1. The body lid 62 has a hinge pin 6 attached to the shoulder member 4 at the rear portion thereof.
It is pivotally attached by means of 3. This pivoting is performed on a bearing member 64 that is detachably fitted to the shoulder member 4, and the body lid 62 can be attached and detached by attaching and detaching the bearing member 64. This makes it easy to clean the inside of the container 1 and to supply and discharge the content liquid.

The bearing member 64 is inserted into the recess 65 of the shoulder member 4 from above, and the resin spring piece 164 is elastically engaged with the locking portion 66 in the recess 65 to prevent accidental disengagement. In order to surely lock the bearing member 64 in the mounted state and to release it, the hook member elastically engages with a part of the bearing member 64 inserted into the recess 65.
The lock member 67 is slid in the lock releasing direction against the spring 221 to release the lock.

The body lid 62 is connected with the bearing member 64 by the spring 6
8 is urged in the opening direction, and the closed state is the vessel lid 62.
The lock member 69 provided at the front end portion of is locked by being engaged with the locking portion 72 provided at a part of the shoulder member 4 by the bias of the spring 71.

The lock member 69 is guided forward and backward by a projection 83 formed on the upper surface of the back plate 82 of the body lid 62.

On the slope 75 of the lock member 72, the body lid 6
A protrusion 78 at the tip of a lock release lever 77 pivotally attached at the rear by a shaft 76 is in contact with the bearing 201 in the second bearing. The lock release lever 77 is the lock member 69.
When the spring 71 is advanced to the engagement position, it is pushed upward by the slope 75 through the protrusion 78, and the operation portion 79 at the tip end is moved from the upper surface opening 81 of the body lid 62 to the body lid. It is exposed so as to be flush with the surface of 62.

When the operating portion 79 is pushed down in this state, the lock release lever 77 is rotated counterclockwise and the projection 78 is rotated.
The sloping surface 75 of the lock member 69 is pushed by the lock member 69 against the spring 68, and the lock member 69 is retracted to disengage from the locking portion 72. Therefore, the lock of the body lid 62 in the closed state is released. At the time when this lock release is completed, there is a play in the unlocking direction between the lock release lever 77 and the body lid 62, and the body lid 62 is released from the pressing operation of the lock release lever 77. It is slightly rotated in the opening direction by the spring 68 regardless of whether it is performed or not.

As a result, the lock member 69 is slightly displaced upward from the position of the locking portion 72, so that the lock member 69 is again moved to the locking portion 72 by a natural operation of releasing the lock and releasing the hand from the operating portion 79. The body lid 62 is automatically opened to the fully opened state by the spring 68 without any engagement.

The lock release lever 77 has a safety member 111.
Is working. The safety member 111 is supported by the body lid 62 so as to be slidable in the longitudinal direction of the lock release lever 77. Then, when the slide portion is operated by the operation portion 112, the locking portion 113 is advanced and retracted below the tip portion of the lock release lever 77, and the lock release lever 77 is prevented from moving while entering below the tip portion. Prevents easy unlocking.

A spring piece 84, which comes into pressure contact with the outer peripheral portion of the bearing member 64, is attached to the rear portion of the body lid 62 by a screw 85. This spring piece 84 is in sliding contact with the outer periphery of the bearing member 64 when the container lid 62 is opened and closed, so that the container lid 62 is closed by the spring 6.
8 exerts braking on the opening operation when opened. Therefore, the automatic opening operation of the container lid 62 at the time of releasing the lock is performed slowly.

On the lower surface of the back plate 82 of the vessel lid 62, the inner container 2
An inner lid 85 made of metal for closing the rear part is applied, and is screwed at a position not shown. A seal packing 86 facing the rim of the inner container 2 is sandwiched between the outer periphery of the inner lid 85 and the back plate 82, and when the container lid 62 is closed, the inner lid 85 is the seal packing 86 portion. The inner container 2 is closed by coming into contact with the rim of the inner container 2.

A steam passage 87 is provided between the inner lid 85 and the back plate 82 to allow steam generated in the inner container 2 to escape to the outside. The steam passage 87 has an opening 88 to the inner container 2 side in the inner lid 85, and an opening 89 to the outside on the upper surface of the rear side of the vessel lid 62. A valve chamber 91 fitted to the back plate 82 from below is provided in the opening 88, and a water stop valve 92 at the time of tipping is provided in the valve chamber 91 which is closed when the body 1 falls.

Immediately downstream of this valve chamber 91 is a vessel lid 62.
The first pool 93 with a wide space reaching the upper part of the
When the body 1 falls over to the left or right and the content liquid tries to flow out through the steam passage 87 without being stopped by the water shutoff valve 92 at the time of the fall, the content liquid to flow out is The first reservoir 93 is stored, and the outflow to the downstream side is suppressed and prevented until the content liquid overflows.

As a result, outflow of the content liquid to the outside is suppressed, and it is possible to provide a sufficient time margin for returning the container 1 to a normal state before it flows out. For this reason, the passage cross-sectional area of the outflow port 94 from the first reservoir 93 to the downstream side is made small, and the first reservoir 9 is provided to the outflow port 94.
Various devises are made such that the shape of 3 is spread in both the left and right directions of the body 1 and the upper surface side of the body lid 62.

On the downstream side of the outflow port 94 of the first pool 93, a second pool 95 is provided which extends rearward from the opening 89. Since the second pool portion 95 extends rearward from the opening 89, even if the container body 1 falls backward and the content liquid flows out without pooling in the first pool portion 94,
This is stored in the second pool portion 95 which is lower than the opening 89 to delay and prevent the outflow from the opening 89 to the outside.

Below the second pool 95 is a lateral opening 9.
An auxiliary reservoir 97 communicated by 6 is also provided. The auxiliary reservoir 97 can receive and store the content liquid that is about to flow out even if it overflows the first and second reservoirs 94 and 95. Further suppress the outflow of.

A drain port 98 is provided at the rear of the second pool 95.
Is provided and the body lid 62 is opened, the first, second,
The liquid contents stored in the auxiliary reservoirs 94, 95, 97 are made to flow down into the inner container 2 of the container 1. However, if the drain port 98 is in the open state with the body 1 closed, when the content liquid flows out to the steam passage 87 when the body 1 falls, the body 1 and the body lid 6 are drained through the drain port 98.
It leaks between the two.

In order to solve this problem, a seal lip 99 is provided at the drain port 98, and when the cover lip 62 is closed, the drain port 98 is pressed against the inner surface of the shoulder member 4 so that the drain port 98 can seal the seal lip 99 and the shoulder member 4. It is designed to be closed by the inner surface of.

Control circuit 1 mounted on the circuit board 48
00 is the one using the microcomputer 101. The pouring operation key 102 provided on the operation panel 201 provided on the upper surface of the beak-shaped protrusion 12 is provided so as to press the pressure sensor 103, and the pressure sensor 103 measures the difference in pressing force during the pouring operation. By converting the signal into an electric signal and inputting it to the microcomputer 101, the drive voltage of the pouring pump 13 is switched to increase / decrease the pouring flow rate.

The operation panel 201 is as shown in FIG. 2, and in addition to the pouring operation key 102, the reboiling / scaling removal setting key 104, the timer setting key 105, the pouring lock /
A release key 106, a liquid volume display unit 107, boiling, descaling, and heat retention display units 108 to 110, and timer set time display units 111 to 113 are provided.

The reboil / descaling removal key 104 and the pouring lock / release key 106 are designed so that the setting mode is changed to a rotary type every time they are operated.

FIG. 3 shows a circuit board 115 provided below and facing the operation panel 201.
10 and a pourable display part 116 are also provided. Each of the display units 108 to 113, 115 and 116 is composed of an LED.

The circuit board 115 is composed of a so-called printed board, and the electronic and electric parts are automatically mounted by a mounter and connected to the printed circuit. A terminal group 211 for necessary external connection is arranged at a constant pitch on one side of the circuit board 115. Therefore, the electrical connection between each of the electric and electronic parts and the other is easily performed through the terminal group 216.

FIG. 4 shows the operation panel 201 and the circuit board 1.
The combination state with 15 is shown.

FIG. 5 shows a control circuit. In the microcomputer 101, as shown in the figure, the electric and electronic parts related to the various inputs and outputs are A / D converters 301 and 302, a switch circuit 303, a drive circuit 304, a display circuit. It is properly connected via 305.

The operation control will be described below. FIG. 6 is a flow chart of the main routine showing the main operation control. After the power is turned on, the initial setting of step # 1 is first performed, and then the processing according to various inputs and outputs is performed (step # 2). Next, when the boiling process (step # 3) is called and the temperature of the content liquid is lower than the heat retention temperature, that is, when the temperature is low due to the initial supply of water or the addition of the content liquid, reboiling is performed by the reboiling / descaling key 104. When set, the content liquid is controlled to be heated to boiling.

In the boiling operation in this case, the heater 61 is fully energized (800 W) to achieve boiling in a short time.

Subsequently, the heat retention process (step # 4) is called to control the content liquid to be kept at a predetermined temperature after initial boiling or reboiling.

Subsequently, timer processing (step # 5)
Is called and the timer is set by the timer setting key 105, delay control is performed so that the boiling operation start time is delayed to the time required to boil the content liquid at the timer setting time and then the boiling operation is started. To do. The boiling operation in this case is performed by halving the energization of the heater 61 from the full energization to 400 W so that the boiling can be achieved gently and quietly by using the timer setting time.

Next, when the descaling process (step # 6) is called and the re-boiling / descaling key 104 is operated in the descaling mode, control is performed so that the boiling operation in step # 3 is continued for a predetermined time. To do. However, the boiling operation may be repeated intermittently to remove the descaling.

Next, the pump processing subroutine (step #
7) is called, the pouring flow rate is set according to the pressing force of the pressure sensor 103 by the pouring operation unit 102, and the motor 14 of the pouring pump 13 is driven to obtain this set pouring flow rate.

Finally, after the other processing (step # 8) is completed, the process returns to step # 2, and the above control is repeated thereafter.

FIG. 7 shows a heat retention processing subroutine (step #
4) showing the flowchart of FIG. 4), in the heat retention mode (step # 60), the processing of step # 12 and thereafter is executed. At step # 61, the room temperature data from the room temperature sensor 210 is fetched, and at step # 62, the liquid amount data from the liquid level detecting section 21 is fetched.

Next, at step # 63, the temperature lowering characteristic of the content liquid at the present time is judged from the room temperature data and the liquid amount data,
To compensate for this, the number of energized W of the heater 1 is set from a table (not shown) or the like, and in step # 15, the number of energized W of the heater 1 is changed according to the above setting. As a result, the content liquid is constantly heated in accordance with the temperature drop characteristics that change depending on the remaining amount and room temperature, and ideally realizes the constitutional heat retention control with no temperature change. It was possible to maintain the predetermined temperature almost accurately by the experiment, and even if the heat retention temperature was set to a high temperature of about 98 ° C., it did not reach boiling and could be used safely.

An example of general initial boiling, temperature change of the content liquid due to the heat retention control and reboiling, and the energized state of the heater 61 are shown by the broken line in FIG.

In this case, the fuzzy theory can be applied to the evaluation of various capturing conditions and the setting of the W number to further improve the control accuracy.

FIG. 9 shows a flow chart of the timer setting processing subroutine. In the timer setting mode (step # 31), liquid amount information and room temperature information are fetched (step # 32).

Next, based on the temperature rise characteristics of the content liquid corresponding to the liquid amount and the room temperature, a boiling start timer corresponding to the liquid amount and the room temperature by energizing the heater 400W is set in order to obtain the content liquid boiling at the timer setting time. (Step # 33), the boiling start timer is decremented and the timer set time is displayed (step # 34).

When the boiling start timer expires (step #
35), the heater 61 is turned on in the boiling mode and the descaling display is blinked to indicate that the boiling operation has been started (step # 36). And when the boiling ends (Step # 3
7) The heater 61 is switched to the heat retention mode, and the heat retention display blinks to indicate that boiling has ended (step #
38).

In this state, when the timer set time is reached (step # 39) or the reboil / descaling removal key 104 is operated in the reboil mode, a buzzer sounds and
The heat retention display is switched to continuous lighting, the timer display is turned off to display that the timer setting mode has been released, and the process returns.

In this case, the temperature change of the content liquid and the heater 61
The solid line in FIG. 8 shows the energized state of.

FIG. 10 shows a flow chart of the descaling processing subroutine. In the descaling mode (step # 51), after reading the liquid volume data (step # 51).
52), the boiling duration is set corresponding to the amount of liquid for removing the descaling (step # 53), and the set duration is added to the initial boiling operation in the boiling mode (step # 5).
4).

FIG. 11 shows a pump operation treatment subroutine. When in the dispensing mode (step # 61), the dispensing lock state is set by the initial setting. Until the pouring lock is released by turning on the pouring lock, the pouring ready display 116 of the pouring lock / release key 106 is kept in the off state (steps # 62, #
63), when the pouring lock / release key 106 is operated, the pouring possible display 116 is turned on, the pouring lock is released (step # 64), and the pressure sensor 103 is pressed by the pouring operation key 104. The sensor output due to the presence of the sensor is read (step # 65).

Next, it is judged whether the sensor output is in the pressurized state or the depressurized state (step # 66). If the sensor output is in the pressurized state, the sensor output is treated as the pressurized data, and the corresponding pressure is applied. Set pressure rank (steps # 67, 6)
8). If the pressure is reduced, the sensor output is treated as the pressure reduction data, and the pressure reduction rank corresponding to the sensor output is set (steps # 69, # 70).

Subsequently, the motor 14 is driven at a rank after the above-mentioned increase / decrease rank is increased / decreased from the current drive rank so that the content liquid is discharged at a flow rate according to the degree of pressing of the discharging operation. (Step # 71).

Such a pouring operation is repeated until the pressure sensor 103 is released from the pouring operation and the pressure sensor 103 is turned off (step # 72). If the pouring operation is not continued for more than 20 seconds after the pouring is completed and the motor drive is stopped, the pouring lock process is automatically performed for safety and the process returns. 7
3, # 74).

[0064]

According to the present invention, the boiling operation of the content liquid in the timer setting mode is performed with the heater calorific value lower than the heater calorific value in the boiling operation in other cases, and the boiling is set by the timer. Since it is performed gently and quietly using time, the noise of boiling water at the time of boiling operation is loud, and it may interfere with deep sleep until the timer setting time, or it may disturb other people's sleep. This can be avoided, and since the early boiling characteristics of the boiling operation other than when the timer is set are not impaired, it is possible to avoid the inconvenience of slow boiling in the case of general boiling.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an electric pot showing a first embodiment of the present invention.

FIG. 2 is a plan view of an operation panel of the electric pot of FIG.

FIG. 3 is a plan view showing a circuit board on the back surface of the operation panel of FIG.

FIG. 4 is an enlarged cross-sectional view of an assembly portion of the operation panel and the circuit board of FIGS. 2 and 3.

5 is a block diagram of a control circuit of the electric pot of FIG. 1. FIG.

FIG. 6 is a flowchart showing a main routine of main operation control of the electric pot of FIG. 1.

FIG. 7 is a flowchart of a heat retention processing subroutine of FIG.

8 is a graph showing a temperature change of the content liquid and the energization state of the heater under the control of FIG.

9 is a flowchart of a timer setting subroutine of FIG.

10 is a flowchart of a descaling subroutine of FIG.

11 is a flowchart of a pump operation processing subroutine of FIG.

[Explanation of symbols]

 1 Body 61 Heater 33 Temperature Sensor 100 Control Circuit 101 Microcomputer 105 Timer Setting Key

Claims (1)

[Scope of utility model registration request] 1. A boiling mode in which the content liquid is boiled, a heat retention mode in which the content liquid is kept at a predetermined temperature, and a timer setting mode in which the boiling operation start time is delayed so that the boiling ends at a timer set time. In the electric hot water storage container having the above, the heater heat generation amount in the boiling operation in the timer setting mode is set lower than the heater heat generation amount in the boiling operation in other cases.