JP2833141B2 - Combined water heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined water heater used in ordinary households.

2. Description of the Related Art Heretofore, in general, a combined product of this type of an electric coffee kettle and an electric kettle provided with a hot water outlet in the vicinity generally has an independent power switch.

SUMMARY OF THE INVENTION In such a conventional configuration, when the electric kettle is erroneously operated during the operation of the electric coffee brewer due to an erroneous operation of the power switch, the hot water is discharged from an unexpected outlet and is the original purpose. In some cases, delicious coffee could not be extracted using an electric coffee machine.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a composite water heater that discharges at most one of two discharge ports.

Means for Solving the Problems In order to solve the above problems, the present invention provides a first container,
A first main heating device provided in the first container;
An auxiliary heating device provided in the container, an electric water supply device having one end communicating with the bottom of the first container and the other end communicating with the first discharge port, a second container, and the second container. A flow path having one end communicating with the bottom of the container via a check valve and the other end communicating with a second discharge port provided in the vicinity of the first discharge port, and a part for heating a part of the flow path. 2, a first switch connected in series with the electric water supply device to form a first series circuit, and a second switch connected in series with the auxiliary heating device and the first series circuit. A first water heater comprising a changeover switch that forms a first parallel circuit by connecting the auxiliary heating device and the first main heating device in parallel by switching the auxiliary heating device and the first main heating device. A second water heater connected in series with the second main heating device to form a second water heater; Road, in which closed is composed of a second switch linking reversed.

Operation According to the above configuration, it is possible to provide a combined water heater that can perform a safer and more reliable operation because at most one of the two outlets is discharged.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

In the figure, 1 is a main body formed of a plurality of steel plates in a rectangular parallelepiped. Reference numeral 2 denotes a substantially cylindrical first container made of stainless steel or the like, which is built in the rear portion of the main body 1. Reference numeral 3 denotes a storage section formed in a recess on the front surface of the main body 1. 4
Is a second container formed of a synthetic resin having an outer shape conforming to the shapes of the first container 2 and the storage section 3. A first main heating device 5 and an auxiliary heating device 6 formed by winding a heating wire around an insulating material such as mica are provided at the bottom of the first container 2. Reference numeral 7 denotes a triac for controlling the energization of the auxiliary heating device 6. Reference numeral 8 denotes a first thermal fuse that operates when abnormal heat is generated by the first main heating device 5. A centrifugal discharge pump 9 is driven by a DC motor 10 and has one end connected to the first container 2 and the other end connected to a substantially L-shaped first rising pipe 11. The motor 10 forms an electric water supply device. 12 is L-shaped tube 13
A first discharge port provided at an upper portion of the storage section 3 which communicates with the first water rising pipe 11 through the first port. 14 is the first
A temperature detecting unit 15 using a thermistor, which is provided upward at substantially the center of the bottom of the container 2 and is thermosensitively attached. Reference numeral 16 denotes a second main heating device in which a sheath heater 18 and a stainless steel pipe 19 are heat-sensitively mounted on a heater body 17 cast of aluminum, and is provided at the bottom of the storage section 3. Reference numeral 20 denotes a check valve that allows only one-way flow from the second container 4 to the stainless steel pipe 19, and connects one end of the stainless steel pipe 19 to the bottom of the second container 4 via the check valve 20. The other end is connected to the second rising pipe 21. Reference numeral 22 denotes an L-shaped tube which communicates with the second rising pipe 21 and is attached through a through hole 23 provided in the vicinity of the first discharge port 12 in the upper part of the storage section 3. 2 is a discharge port. The stainless steel pipe 19 and the second rising pipe 21 form a flow path. Numeral 24 denotes a thermostat which is heat-sensitively mounted on the heater body 17 and controls the energization of the sheathed heater 18 by the temperature of the heater body 17. Reference numeral 25 denotes a second thermal fuse that operates when the sheath heater 18 generates abnormal heat. Reference numeral 26 denotes a rectifying port located below the first discharge port 12 and the second discharge port 22 and provided on the top surface of the storage section 3.
Is an inverted conical rectifying member having Inside the rectifying member 26, four rectifying plates 28 are attached vertically around the rectifying port 27. The rectifying plate 28 regulates the flow of the hot water from the first discharge port 12 and the second discharge port 22 and causes the hot water to flow out of the rectifying port 27. 29 is a glass container placed on the second main heating device 16, 30 is a paper filter for storing coffee powder 31, and this paper filter 30 is a coffee basket 32
Is set to Next, an electric circuit will be described. 33 is a control board for controlling the electric circuit. Reference numeral 34 denotes a relay for controlling the power supply to the first main heating device 5 by the control board 33. The control board 33 receives a signal from the temperature detection unit 15 and controls the first main heating device 5 by a relay 34. Further, the control board 33 energizes the first main heating device 5 until the water in the first container 2 boils,
The triac 7 is controlled in order to keep the hot water in the container 2 at about 95 degrees Celsius to control the power supply to the auxiliary heating device 6.
The control board 33 controls the rotation speed of the DC motor 10 in accordance with the rotation angle of a discharge knob 36 formed of a rotary variable resistor and attached to the control panel 35. A bridge circuit 37 is a power supply circuit of the pump 9. A first switch 38 is connected in series with the bridge circuit 37 to form a first series circuit 39. The triac 7 is connected in series with the auxiliary heating device 6 to form an auxiliary heating circuit 40. Reference numeral 41 denotes a single-pole double-throw switch forming a changeover switch, which is linked to the rotation of the discharge knob 36. When switching to one side in conjunction with the rotation of the discharge knob 36, the first series circuit 39 and the auxiliary heating circuit 40 are switched.
Are connected in series to form a second series circuit 42. Also,
When the discharge knob 36 is released, it is switched to the other, and the first thermal fuse 8 and the relay 34 are connected in series with the first main heating device 5.
And the auxiliary heating circuit 43 formed by connecting
40 are connected in parallel to form a first parallel circuit 44.
A water heater switch 45 is connected in series with the first parallel circuit 44 to form a first water heater 46. Reference numeral 47 denotes a second switch, which operates in conjunction with the first switch 38, and operates when the first switch 38 is turned on.
47 is off, and when the first switch 38 is off, the second switch 47 is on. The second switch 47, the second thermal fuse 25, the thermostat 24, and the second main heating device 16 form a second water heater 48. The first water heater
46 and the second water heater 48 are connected in parallel to form a power supply 49.
It is connected to the. Reference numeral 50 denotes a pair of rails for taking the main body 1 in and out of the storage wall 51, and reference numeral 52 denotes a third switch. The third switch 52 is connected in series with a drive circuit 54 for the electromagnet 53 and is connected to a power supply 49. Third switch 52
When the button is pressed, the electromagnet 53 operates and the main body 1 slides on the rail 50 and jumps out. Reference numeral 55 denotes a lid of the first container 2, which is provided with a vapor passage 56 having one end opened above the first container 2 and the other end opened outside the lid 55. Opening and closing of the lid 55 is performed by rotating the hinge portion 57 and operating the lock knob 58. Reference numeral 59 denotes a drain valve of the first container 2. Reference numeral 60 denotes a power supply cord reel.

 Next, the operation of the combined water heater having the above configuration will be described.

The state of each switch of the electric circuit at this point is as shown in FIG. First, the third switch 52
Is pressed to activate the electromagnet 53 to pull out the main body 1 by sliding the rail 50. Press the lock knob 58 to open the lid 55
Put water in the container 2. Next, the water heater switch 45 is turned on. The control board 33 activates the relay 34 to energize the first main heating device 5. The first main heating device 5 turns the water into hot water and then boils. The temperature detection unit 15 detects the boiling, and the control board 33 inputs the signal to cut off the power supply to the first main heating device 5. Thereafter, the control board 33 controls the energization of the auxiliary heating device 6 via the triac 7 while detecting the signal of the temperature detecting section 15 to keep the temperature of the hot water in the first container 2 at about 95 degrees Celsius. When hot water is desired, turn the discharge knob 36. A single-pole, double-throw switch 41 interlocking with the discharge knob 36 forms a second series circuit 42 with the first series circuit 39 and the auxiliary heating circuit 40, and the control board 33 detects the rotation angle of the discharge knob 36 to detect the direct current. The motor 10 is driven. The hot water in the first vessel 2 is pumped by the pump 9 from the first rising pipe 11 to the L-shaped tube 13,
It passes through the first discharge port 12 and flows into the flow regulating member 26. In the rectifying member 26, the flow of the hot water is adjusted by the rectifying plate 28 and flows out from the rectifying port 27. This is received in a container (not shown). When a desired amount of hot water is obtained, the discharge knob 36 is returned. The control board 33 detects the signal of the discharge knob 36, and stops the rotation of the DC motor 10. In this way, a desired amount of hot water is obtained. Further, the control board 33 detects the signal of the discharge knob 36 and stops the rotation of the DC motor 10, and the single pole double throw switch 41 disconnects the auxiliary heating circuit 40 of the first series circuit 39 and the The heating circuit 43 is connected in parallel to enable the power supply to the auxiliary heating device 6 and return to the warm state.
Here, in the warm state, the signal of the temperature detecting
And the first main heating device 5 is not energized.

Next, when coffee is desired, a predetermined amount of water is put into the second container 4, the coffee powder 31 is stored in the paper filter 30, set in the coffee basket 32, and placed on the glass container 29. The glass container 29 is placed on the second main heating device 16. The water in the second container 4 passes through the check valve 20 and partially fills the inside of the stainless steel pipe 19 and the second rising pipe 21. Here, the second switch 47 is turned on. The energization of the Shih Tzu heater 18 is started, the temperature of the second main heating device 16 rises, and the water in the stainless steel pipe 19 is heated. The first switch 38, which is interlocked with the second switch 47 at the same time that the second switch 47 is energized, includes a bridge circuit 37 and a single pole double throw switch 41.
Circuit is closed. Therefore, no current flows in the bridge circuit 37 and the DC motor 10 does not rotate even if the discharge knob 36 is operated, and the pump 9 does not operate. A portion of the water in the stainless steel pipe 19 boils, and the expansion force of the steam and the action of the check valve 20 cause the hot water in the stainless steel pipe 19 and the second rising pipe 21 to rise.
The hot water inside is pushed and flows into the flow regulating member 26 from the second discharge port 22. In the rectifying member 26, the flow of the hot water is adjusted by the rectifying plate 28 and flows out of the rectifying port 27. The outflowing hot water is discharged and dropped to the coffee powder 31 in the front coffee basket 32. Water flows from the second container 4 through the check valve 20 into the stainless steel pipe 19 and the second water rising pipe 21 through the check valve 20, and the water is repeatedly boiled until the water in the second container 4 runs out. The hot water dropped on the coffee powder 31 extracts the coffee liquid and removes it with a paper filter.
After being filtered at 30, it is stored in a glass container 29. When the water in the second container 4 is exhausted, the second main heating device 16 is in a state of being baked, the temperature rises, and the operation of the thermostat 24 cuts off the power to the sheathed heater 18. thermostat
Reference numeral 24 controls energization of the sheath heater 18 so as to maintain the temperature of the second main heating device 16 at about 120 degrees Celsius. When the coffee is completely extracted as described above, the coffee in the glass container 29 is kept at about 90 degrees Celsius by the second main heating device 16. A desired amount of coffee will be poured from a glass container 29 into a cup (not shown) as needed.

Therefore, according to the configuration of this embodiment, the second switch
When the coffee is being extracted by operating 47, the first switch 38 is opened and the DC motor 10 does not operate, and therefore the hot water of the first container 2 does not discharge because the pump 9 does not operate, When the first switch 38 is closed, the second
Switch 47 can be opened to perform a safe operation such that hot water is not discharged from the second container 4, and a danger such as a burn due to an erroneous operation can be prevented.

In the embodiment of the present invention, the rectification port 27 is located below the first discharge port 12 and the second discharge port 22. However, as shown in FIG. The rectification port 27 may be located below the discharge port 12 of the first embodiment.

Effect of the Invention As described above, according to the present invention, the first container, the first main heating device provided in the first container, the auxiliary heating device provided in the first container, One end communicating with the bottom of one container and the other end communicating with the first discharge port, the second container, and one end communicating with the bottom of the second container via a check valve; A flow path communicating with a second discharge port provided at the other end near the first discharge port, a second main heating device for heating a part of the flow channel, and the electric water supply device. A first switch connected in series to form a first series circuit;
The auxiliary heating device and the first main circuit are connected in series to form a second series circuit by switching the auxiliary heating device and the first series circuit, and the first main circuit is connected in parallel with the first heating circuit. A first water heater composed of a changeover switch forming a parallel circuit, and a second water heater connected in series with the second main heating device to form a second water heater in which the open / closed circuit is reverse to the first switch. And a second switch interlocking with the above, it is possible to provide a composite water heater that can perform safer and more reliable operation because at most one of the two outlets discharges.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an overall sectional view of a combined water heater, FIG. 2 is an electric circuit diagram,
FIG. 3 is a perspective view of the whole, and FIG. 4 is a cross-sectional view of the straightening port. 2 ... first container, 4 ... second container, 5 ... first main heating device, 6 ... auxiliary heating device, 9 ... pump, 10 ...
DC motor, 12 first discharge port, 16 second main heating device, 19 stainless steel pipe, 20 check valve, 21
... second rising pipe, 22 ... second outlet, 38 ... first
, A first series circuit, 41, a single-pole double-throw switch, 42, a second series circuit, 44, a first parallel circuit, 46, a first water heater, 47, ... second switch, 48
... Second water heater.

Claims (1)

(57) [Claims] 1. A first container, a first main heating device provided in the first container, an auxiliary heating device provided in the first container, and one end at a bottom of the first container. An electric water supply device having the other end connected to the first discharge port, a second container, and one end connected to the bottom of the second container via a check valve, and the other end connected to the first container. A flow path communicating with a second discharge port provided in the vicinity of the discharge port, a second main heating device for heating a part of the flow path, and a first main heating device connected in series with the electric water supply device. A first switch that forms a series circuit, the auxiliary heating device and the first series circuit are connected in series to form a second series circuit, and the first and second switches are switched to form the second series circuit. Connect the main heating device in parallel and
A first water heater constituted by a changeover switch forming a parallel circuit of the above, and a second water heater connected in series with the second main heating device to form an open / close circuit with the first switch. Are combined with a second switch that works in reverse.