JP4077188B2 - Steam generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for generating steam by heating water to atomize, and more particularly to a steam generating apparatus suitable for a beautiful face or the like.
[0002]
[Prior art]
A facial device is used as a kind of steam generator. Facial equipment is a face care product after removing makeup by making the pores open by applying steam to the face and making it easier to remove waste products.
Conventionally, in this type of device, water stored in a heating dish is heated by a heater, the heated water is atomized by an ultrasonic vibrator, and the atomized water is blown from the fan device, It spouts to the outside as steam.
[0003]
[Problems to be solved by the invention]
However, the wind blown from the fan device gives the steam a strong direction, but cools the steam. In particular, since the outside air temperature is low during cold weather, the steam temperature further decreases. For this reason, it has been difficult to obtain steam at a desired temperature.
Further, since the ultrasonic vibrator is heated by absorbing the radiant heat from the heater, there is a problem that the characteristics are inferior.
Therefore, there has been a demand for a steam generator that can reduce the thermal influence on the ultrasonic transducer and jet the steam at an optimum temperature.
[0004]
[Means for Solving the Problems]
In order to solve the above points, the following configuration is adopted.
<Configuration 1 >
In the steam generator according to the present invention, a heating dish in which water is stored, a heater for heating the water, an ultrasonic vibrator for atomizing the water, and the atomized water as steam An ejection nozzle for ejecting, a fan part having a blower opening for sending wind to send steam to the ejection nozzle, and a main body for housing a heating dish, a heater, an ultrasonic vibrator and a fan part, wherein the heater is a heating dish Is a steam generator in which the ultrasonic vibrator is provided at the bottom of the heating dish and the air blowing port is located below the heating dish, and guides the air from the air blowing hole toward the ultrasonic vibrator. First air passage forming means, second air passage forming means for guiding the air that has passed through the ultrasonic vibrator toward the heater, and an ejection nozzle for injecting the steam that has passed through the heater into the steam on the heating dish 3rd draft to guide And forming means, extending along the vertical direction, and the partition plate for the heating pan and the fan section bisecting the partition and the body, a heater, a driving circuit board having a drive circuit for driving the ultrasonic transducer and the fan unit A heat sink provided, and a heat shield for partitioning the heater and the ultrasonic vibrator and blocking heat from the heater, the partition plate has an opening for disposing the air outlet; The heat shield plate is located on the side of the heating pan and extends substantially in the horizontal direction, and the heat sink is located in front of the opening and below the heat shield plate, and includes a main body, a partition plate, a heat sink, and The heat shield plate constitutes a first ventilation path forming means and a second ventilation path forming means.
[0005]
<Action>
In the steam generator according to the present invention, the first ventilation path forming means guides the wind from the air outlet of the fan part toward the ultrasonic vibrator, and the second ventilation path forming means passes through the ultrasonic vibrator. The third wind passage forming means guides the wind that has passed through the heater to the ejection nozzle to eject steam on the heating dish.
As a result, the wind from the fan part absorbs the heat of the ultrasonic vibrator and cools it, and then absorbs the radiant heat from the heater to deliver the steam to the ejection nozzle without lowering the steam temperature. Therefore, it is possible to prevent deterioration of the ultrasonic transducer and to eject steam at an optimum temperature. In addition, since the radiant heat of the heater is effectively used, an economical steam generator can be provided.
[0006]
Further, in the steam generating apparatus according to the present invention, in order to constitute the third ventilation path forming means, the steam is attached so as to cover the heating dish, communicates with the ejection nozzle, and guides the steam from the heating dish to the ejection nozzle. A guide tube and a blower that communicates with the steam guide tube and guides the wind that has passed through the heater to the steam guide tube can be provided.
[0007]
The steam generator according to the present invention further includes an operation panel provided in the main body, and a heat radiating plate provided with a drive circuit board having a drive circuit for driving the heater, the ultrasonic vibrator, and the fan unit, A heat sink can comprise the 4th ventilation path formation means for guiding a part of wind from a ventilation opening toward the operation panel side with the inner wall surface of a main body.
For this purpose, the heat radiating plate is disposed between the air outlet and the operation panel along the inner wall surface of the main body so as to blow part of the air from the air outlet toward the operation panel.
[0008]
<Configuration 2>
Moreover, the steam generator according to the present invention includes a heating dish in which water is stored, a heater for heating water, an ultrasonic vibrator for atomizing water, and atomized water as steam. An ejection nozzle for ejecting outside, a fan part having an air blowing port for sending wind to send steam to the ejection nozzle, and a main body for housing a heating dish, a heater, an ultrasonic vibrator and a fan part, A steam generator that is provided at the top of the heating dish, the ultrasonic vibrator is provided at the bottom of the heating dish, and the air outlet is located below the heating dish, and directs air from the air outlet to the ultrasonic vibrator. A first air passage forming means for guiding the air, a second air passage forming means for guiding the air that has passed through the ultrasonic vibrator toward the heater, and the air that has passed through the heater to eject the steam on the heating dish. Third guide to the ejection nozzle The heat path forming means, an operation panel provided in the main body, and a heat radiating plate provided with a driving circuit board having a driving circuit for driving the heater, the ultrasonic vibrator, and the fan unit, the heat radiating plate, It is arranged along the inner wall surface to guide a part of the wind from the air blower along the inner wall surface of the main body toward the operation panel side, and constitutes a fourth ventilation path forming means together with the inner wall surface. And
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
<Example>
FIG. 1 is a perspective view showing an outer shape of a steam generator according to the present invention.
FIG. 2 is a cross-sectional view taken along the line II of FIG.
FIG. 3 is a cross-sectional view taken along the line II-II in FIG.
FIG. 4 is a top view showing a cross section of the steam generator according to the present invention.
As shown in FIG. 1, the steam generator 10 according to the present invention includes a main body 11 formed of a box having a substantially rectangular parallelepiped shape, and a lid body 12 provided on the upper surface of the main body 11 and covering the main body 11. Is provided.
As shown in FIG. 2, the lid 12 is pivotally supported so as to be detachable and openable and closable on a hinge portion 13 provided at the upper end of the back surface of the main body 11.
An operation panel 14 that is operated by a user is provided on the front portion 11 d of the main body 11.
[0010]
The operation panel 14 includes a time display unit 14a for displaying time, a start / stop key 14b, a time setting key 14c for changing the operation time within a range of 1 to 15 minutes, and an atomization for adjusting the amount of steam generated. Amount key 14d, an aroma key 14e that performs only air blowing, an atomization amount lamp 14f that is turned on when a small amount of atomization is selected with the atomization amount switch key 14d, and a water supply warning lamp 14g that is turned on when the water level drops. And are provided.
[0011]
Inside the main body 11, located near the hinge portion 13, a water supply portion 15 for supplying water, and a heating portion 16 located near the operation panel 14 for heating and atomizing water. The water supply unit 15 and the heating unit 16 communicate with each other, and the communication unit 17 for guiding the water of the water supply unit 15 and the heating unit 16 are detachably attached, and the steam from the heating unit 16 is guided and ejected to the outside. A steam ejection part 18 for performing the operation, a fan part 19 for providing wind to the steam, and a blower outlet 44a for guiding the air blown from the fan part 19 to the steam ejection part 18. The heat sink 20, the water absorption part 15, and the heating part 16 for providing the driving circuit board 56 located in front of the air outlet 19a of the fan part 19 and disposed below the heating part 16 are provided. Partitioning partition Plate 11a and is provided.
[0012]
As shown in FIG. 4, the heat sink 20 is formed by two plate members 20 a and 20 b that are orthogonal to each other in an L shape, is positioned in front of the air blowing port 19 a, and is used as a heat radiating plate. As shown in FIGS. 3 and 4, the plate member 20 a extends to the air blowing port 19 a so as to be orthogonal to the partition plate 11 a and divides the air blowing port 19 a into two. The plate member 20b is located between the partition plate 11a and the front surface portion 11d so as to be parallel to the partition plate 11a. A drive circuit board 56 is attached to the plate member 20b.
Accordingly, the heat sink 20 defines the ventilation path W2 as shown in FIG. 4 together with the inner wall surfaces of the side walls 11b and 11d of the main body 11, and a part of the wind from the blower opening 19a is ventilated. The 4th ventilation path formation means 74 for guiding toward the operation panel 14 side along W2 is comprised.
[0013]
Moreover, the partition plate 11a is extended along the up-down direction, and divides the main body 11 into two. Below the partition plate 11a, there is provided an opening 65 for forming the air blowing port 19a of the fan part.
Thereby, the partition plate 11a, together with the heat sink 20 and the side wall 11c of the main body 11, defines a part of the ventilation path W1 as shown in FIGS. 1st ventilation path formation means 71 for guiding the wind from the ventilation opening 19a toward the heating part 16 side along the ventilation path W1 is comprised.
[0014]
As shown in FIG. 2, the water supply unit 15 is formed at a first step portion 22a provided with a cartridge-type water supply tank 21, and at a position lower than the first step portion 22a. And a second step portion 22b provided with a float switch 23 to be detected.
Each step 22a and 22b has a circular plane, has a size that allows the cap 24 and the float switch 23 of the water supply tank 21 to be installed, and the first step 22a and the second step. The level difference with 22b is set so that a predetermined water supply amount can be obtained.
Further, a connecting pipe 22c that extends downward and guides water from the water supply tank 21 is formed in the second step portion 22b.
[0015]
In the water supply tank 21, a valve body (not shown) is provided in the cap 24. A push-up bar 25 is provided on the first step portion 22a. The push-up bar 25 pushes up the valve body of the water supply tank 21 so that the water supply tank 21 is mounted on the first step portion 22a and the water supplied from the water supply tank 21 is kept at a constant water level. Stored.
In this embodiment, the capacity of the water supply tank 21 is set to around 250 cc in consideration of one cleansing time (about 15 minutes) and the amount of steam ejection (8 to 10 cc / min).
[0016]
The heating unit 16 includes a heating dish 26 for storing water, and a water supply chamber 27 that communicates with the heating dish 26 and supplies water to the heating dish.
The heating dish 26 is formed of a material having excellent thermal conductivity such as aluminum, and the surface thereof is subjected to glossy fluororesin processing.
[0017]
As shown in FIGS. 2 and 3, the heating dish 26 has a large-diameter portion 28 as an upper portion having an opening 26 a that opens upward, and a lower portion integrally formed with the large-diameter portion 28. A small-diameter portion 29 is provided, and an overall T-shaped longitudinal section is shown.
[0018]
A heater 30 for heating water is provided on the lower surface 28a of the large diameter portion 28 along the lower surface 28a.
An ultrasonic transducer 31 for atomizing the heated water is provided on the bottom surface 29 a of the small diameter portion 29.
[0019]
In this embodiment, a 500 watt sheathed heater is used as the heater 30, and an ultrasonic vibrator having a frequency of about 1.6 MHz and a propagation sound velocity in water of 1500 m / s is used as the ultrasonic vibrator 31. The distance h from the bottom surface 29a of the heating dish 26 to the water surface is set to 45 mm, and the capacity of the heating dish 26 is set to 50 to 55 cc.
[0020]
A heat shield plate 32 that partitions the heater 30 and the ultrasonic transducer 31 is provided on the side of the small diameter portion 29.
The heat shield plate 32 is fixed to the upper edge of the heat sink 20 and the side surface of the partition plate 11a as shown in FIG. 2, and is slightly inclined with respect to the horizontal as shown in FIG. Is arranged. The heat shield plate 32 extends to the vicinity of the side wall 11b of the main body 11, but keeps a constant interval as an air passage between the side wall 11c and the side wall 11b.
Thereby, as shown in FIG. 3, the heat shield plate 32 defines a part of the middle of the ventilation path W1 together with the side walls 11b and 11c of the main body 11 and the partition plate 11a. The second ventilation path forming means 72 is configured to guide the wind that has passed 31 toward the heater 30.
[0021]
Since the heat shield plate 32 attached in this way partitions the heater 30 and the ultrasonic transducer 31 and blocks heat radiated from the heater 30 to the ultrasonic transducer 31, and is provided with an inclination. Even if a water droplet jumps out of the heating pan 26, it falls along the main body side wall 11b without being accumulated on the heat shield plate 32 and is discharged to the outside. Thereby, the influence of water on the drive circuit board 56 provided in the heat sink 20 can be prevented.
[0022]
A connecting pipe 27 a that extends downward from the bottom and guides water from the water supply unit 15 is provided at the bottom of the water supply chamber 27. A temperature sensor 33 for detecting the temperature of water is provided on the bottom surface of the water supply chamber 27.
[0023]
The communication part 17 communicates the connection pipe 34 communicating with the connection pipe 22c of the water supply part 15 and the connection pipe 27a provided in the water supply chamber 27 of the heating part 16, and after cleansing is completed. The water supply part 15 and the waste_water | drain chamber 35 for discharging | emitting residual water in the heating part 16 are provided.
[0024]
FIG. 5 is a cross-sectional view showing the drainage chamber 35 of the steam generator according to the present invention. 5A is a cross-sectional view of the drainage chamber 35 in a non-drainage state, and FIG. 5B is a cross-sectional view of the drainage chamber 35 in a drainage state.
A valve portion 37 is provided in the drain chamber 35.
As shown in FIGS. 5 and 6, the valve portion 37 includes a valve seat 40 that forms a flow hole 36 for draining water, and the valve hole 40 that fits into the valve seat 40. A valve body 41 to be closed, a spring 42 for moving the valve body 41 downward, and an inclined plate 43 having an inclined surface for moving the valve body 41 upward are provided.
[0025]
In order to open and close the valve portion 37, the tip of a manual operating rod 38 is in contact with the inclined plate 43. Further, a drain container 39 that can be inserted and removed to receive residual water discharged by opening the valve portion 37 is provided below the inclined plate 43. Since the capacity of the drain container 39 needs to recover the residual water in the apparatus after one cleansing, when the capacity of the water supply tank 21 is 250 cc, about 100 cc is preferable.
[0026]
In the valve portion 37 having such a structure, when the operating rod 38 is pushed in by the user to discharge water, the inclined plate 43 moves and moves the valve body 41 upward by the inclined surface. When the valve body 41 moves upward and leaves the valve seat 40, the flow hole 36 is opened. Thereby, residual water can be discharged.
Further, when the user releases the hand from the operating rod 38, the spring 42 moves the valve body 41 downward, so that the valve body 41 is fitted into the valve seat 40 and closes the flow hole 36.
[0027]
FIG. 6 is a perspective view showing the steam ejection portion 18.
FIG. 7 is a bottom view showing the steam ejection portion 18.
FIG. 8 is a mounting view of the steam ejection portion 18.
As shown in FIGS. 6, 7, and 8, the steam ejection unit 18 communicates with the air blowing unit 44 (see FIG. 3), and includes a steam guide tube 45 that covers the heating dish 26, and a steam guide tube. A cover case 46 covering 45, and a jet nozzle 47 communicating with the steam guide tube 45 and projecting from the cover case 46.
[0028]
The steam guide tube 45 has a cylindrical outer tube portion 45a that covers the entire large-diameter portion 28 of the heating pan 26, and an inner tube portion that is concentrically covered with the outer tube portion 45a. 45b.
A blower introduction portion 45c that covers the blower portion 44 is provided on one side of the outer tubular portion 45a so as to bulge as shown in FIGS. 6 and 7, and a blower introduction port is provided on the inner tubular portion 45b. 45d is provided.
[0029]
On the upper surface of the steam guide tube 45, an overhanging portion 45e expanded in a semicircular dome shape is provided at the substantially central portion of the inner tube portion 45b, and a falling surface 45h (formed on the front side of the overhanging portion 45e ( 6) is provided with a steam vent 45f that communicates with the inside cylinder portion 45b and feeds out steam, and a surrounding rib 45g (see FIG. 7) surrounding the steam vent 45f is suspended. Is provided.
[0030]
Since the overhanging portion 45e is located almost directly above the heating dish 26 and secures a distance from the water surface of the heating dish 26, it is formed on the upper surface of the heating dish 26 when the ultrasonic vibrator 31 operates. There is no contact with the water column. Moreover, since the overhang | projection part 45e has comprised the semicircle dome shape, when the adhering steam turns into a water droplet, the fall of the atomization capability by interference is prevented, without falling directly on a water column.
[0031]
As shown in FIGS. 3 and 7, the steam guide tube 45 defines another part of the ventilation path W1 together with the air blower 44, and the wind passing through the heater 30 is passed to the ventilation path W1. A third air passage forming means 73 that passes through the heating pan 26 and guides it to the ejection nozzle 47 is formed.
[0032]
The steam guide tube 45 is formed of a nylon-based material having relatively excellent hydrophilicity. Thereby, when steam condenses, it is difficult to form water droplets, and dripping onto the heating pan 26 can be prevented in advance, so that it is possible to prevent the steam temperature and the steam amount from being lowered.
[0033]
In the steam guide tube 45, the wind from the blower outlet 44a of the blower portion 44 is introduced between the outer tube portion 45a and the inner tube portion 45b by the blower introduction portion 45c, and then the inner tube portion by the blower introduction port 45d. Introduced into 45 b, steam is taken in along the inner peripheral surface of the inner cylinder part 45 b and sent out to the vent hole 45 f (see the arrow in FIG. 7). When the steam condenses into the inner cylinder portion 45b to form water droplets, the water droplets move toward the steam vent hole 45f by blowing because the surrounding rib 45g is provided around the steam vent hole 45f. Even so, the steam vent 45f is not reached by the surrounding rib 45g.
[0034]
The cover case 46 is fixed in a state of being attached to the heating unit 16 by a fixing member 48 (see FIG. 8) provided on the upper surface of the main body 11. The fixing member 48 is provided on the upper surface of the main body 11 so as to be able to rise and fall, and is fitted to the cover case 46 to fix the cover case 46.
The cover case 46 is provided with a lid 49 for covering the ejection nozzle 47 so as to be opened and closed. A mirror 50 is attached to the inner surface of the lid 49. The mirror 50 is used so that the user can easily apply the steam from the ejection nozzle to a desired portion of the face.
[0035]
9 is a view showing the ejection nozzle 47, FIG. 9A is a cross-sectional view showing the ejection nozzle 47, and FIG. 9B is seen from the A direction on FIG. 9A. It is a front view which shows the ejection nozzle 47. FIG.
As shown in FIGS. 6 and 9, the ejection nozzle 47 includes a hollow ejection cylinder 47 a and a shaft portion 47 b that is integrally formed orthogonally thereto.
One end portion 47c of the shaft portion 47b communicates with the ejection tube 47a and is formed of a hollow portion for guiding the steam from the steam guide tube 45.
Further, a rectifying plate 47d having a V-shaped front surface is provided in the ejection cylinder 47a, and directivity is given so as to be ejected linearly toward the user without diffusing steam.
[0036]
As shown in FIG. 6, the ejection nozzle 47 is provided on the lower bearing ribs 51 a and 51 b provided on the falling surface 45 h of the steam guide tube 45 and on the inner surface side of the cover case 46 covering the steam guide tube 45. The upper bearing ribs 52a and 52b are sandwiched and attached rotatably.
[0037]
As shown in FIG. 6, the ejection cylinder 47 a protrudes from the long hole 53 opened in the cover case 46, and the ejection angle can be adjusted along the long hole 53.
As described above, since the ejection nozzle 47 is covered with the lid 49 on the upper surface of the cover case 46, when not in use, dust and insects do not enter the ejection cylinder 47a of the ejection nozzle 47, and the steam generator 10 is Can be used hygienically.
[0038]
The ejection nozzle 47 is formed of a nylon-based material having a relatively excellent hydrophilic property, similar to the steam guide cylinder 45, and the rectifying plate 47d provided in the ejection cylinder 47a is excellent in thermal conductivity, such as stainless steel, and is hydrophilic. It is formed with the material which has.
Thereby, generation | occurrence | production of a water droplet can be suppressed and it can prevent beforehand that a hot water scatters from the front-end | tip of the ejection cylinder 47a.
Note that the material of the steam guide tube 45 and the ejection nozzle 47 described above may be hydrophilic, and the shape of the rectifying plate 47d may be a cross or the like.
[0039]
As shown in FIGS. 2 and 3, the fan unit 19 includes a fan 53a having a blower opening 19a and a motor 53b for starting the fan 53a.
A power circuit board 54 is attached between the fan unit 19 and the water supply unit 15. The power supply circuit board 54 is provided with a power supply circuit 55.
A drive circuit 57 is provided on the drive circuit board 56 attached to the L-shaped heat sink 20.
[0040]
Further, a fall switch 58 (see FIG. 2) is provided at the bottom of the main body 11 in order to stop the operation when the steam generator 10 that is operating falls due to an accident. Further, a thermal fuse 59 (see FIGS. 3 and 4) is attached to the back surface of the heat shield plate 32 in order to stop the operation by melting by abnormal heating.
[0041]
In this embodiment, the microcomputer 60 for controlling all the operations of the steam generator 10 according to the present invention is attached to the back surface of the operation panel 14.
FIG. 10 is a block diagram showing a control system of the steam generator 10 according to the present invention.
As shown in FIG. 10, the control system 61 includes a microcomputer 60, an operation panel 14 controlled by the microcomputer 60, a power supply circuit 55, and a drive circuit 57 connected to the power supply circuit 55. including.
[0042]
The microcomputer 60 controls the energization control unit 63 for controlling the energization rate of the drive circuit 57 based on the temperature detection signal from the memory 62 and the temperature sensor 33, and the control for controlling the memory 62 and the energization control unit 63. Part 64.
The memory 62 stores an initial temperature T0 of water, a first set temperature T1 corresponding to each initial temperature T0, and a second set temperature T2 “85 ° C.” set to be constant.
The first set temperature T1 is determined in consideration of the temperature difference between the water and the water surface located in the vicinity of the temperature sensor 33, the time from the start of heating to the generation of steam, and the steam temperature at the optimal position where the steam hits the face. Is done.
In this embodiment, when the initial temperature T0 is “10 ° C.”, the first set temperature T1 is “75 ° C.”.
[0043]
The power supply circuit 55 is connected to a commercial AC power supply, and the power supply circuit 55 is connected to an overturn switch 58 and a thermal fuse 59.
The drive circuit 57 is connected to the float switch 23, the heater 30, the ultrasonic transducer 31, the temperature sensor 33, and the fan unit 19.
[0044]
<Operation of Example>
The operation of the steam generator 10 according to the present invention will be specifically described with reference to a flowchart.
FIG. 11 is a flowchart showing the operation of the steam generator 10 according to the present invention.
FIG. 12 is a timing chart showing the control operation of the control system 61 according to the present invention.
[0045]
First, as shown in FIG. 8, the user attaches the water tank 21 filled with 10 ° C. water to the water supply unit 15, and places the cover case 46 on the upper surface of the heating unit 16 to fix the member. After fixing by 48, the lid body 12 is closed, and then the lid body 49 attached to the cover case 46 is opened to adjust the ejection nozzle 47 to a desired angle.
Water from the water supply tank 21 is supplied from the water supply unit 15 through the communication unit 17 to the heating dish 26 of the heating unit 16 and stored in the heating dish 26.
When water is supplied to the heating pan 26, the control unit 64 of the microcomputer 60 reads a temperature detection signal indicating that the initial temperature T0 is 10 ° C. from the temperature sensor 33 and stores it in the memory 62 (step 1). ).
[0046]
In addition, the control unit 64 displays “15” on the time display unit 14 a of the operation panel 14. This numerical value “15” means that the operating time initial setting value is set to 15 minutes (step 1).
When changing the set time, the user appropriately sets the operation time in the range of 1 to 15 minutes with the time setting key 14c and sets the atomization amount with the atomization amount switching key 14d (step). 2).
The set operation time and atomization amount are stored in the memory 62.
[0047]
When the user presses the start / stop key 14b (step 3), the control unit 64 checks the water level based on the water level detection signal from the float switch 23 (step 4).
When it is determined that the water level is insufficient, the control unit 64 blinks the water supply warning lamp 14g and returns to Step 1 (Step 5).
If it determines with a predetermined water level, the control part 64 will send a control instruction | indication to the electricity supply control part 63. FIG. Upon receiving the control instruction, the energization control unit 63 activates the drive circuit 57 to energize only the heater 30 at an initial energization rate of 100%, for example, 5 amperes (see FIG. 12). Heat the water (step 6).
[0048]
When the water in the heating pan 26 is heated, the control unit 64 sets the first set temperature T1 “75 ° C.” stored in the memory 62 based on the initial temperature T0 of 10 ° C. stored in the memory 62. After reading, it is determined whether or not the water in the heating pan 26 has reached 75 ° C. (step 7).
When the temperature of the water reaches 75 ° C., the control unit 64 activates the drive circuit 57 to drive the ultrasonic transducer 31 according to the set atomization amount and to drive the fan unit 19 (FIG. 12) (step 8).
[0049]
The driven ultrasonic transducer 31 forms a water column on the water surface of the heating dish 26 and atomizes the water. The atomized water is jetted to the outside through the steam jetting part 18 as steam by the air blown from the driven fan part 19.
[0050]
In the present embodiment, when the wind is sent out from the air blowing port 19a, the first ventilation path forming means 71 first strikes the drive circuit board 56, so that the drive circuit 57 is driven by the drive circuit 57. The generated heat can be absorbed and overheating of the drive circuit board 56 can be prevented.
The first ventilation path forming means 71 guides this wind toward the ultrasonic transducer 31 provided at the bottom of the heating dish 26. As a result, since the wind passes through the ultrasonic transducer 31, the ultrasonic transducer 31 can be prevented from being heated by radiant heat from the heater 30, and deterioration of the ultrasonic transducer can be prevented.
[0051]
The second ventilation path forming means 72 guides the wind that has passed through the ultrasonic transducer 31 toward the heater 30. Thereby, since the wind hits the heater 30, it can absorb the heat and increase its own temperature.
[0052]
Further, the third ventilation path forming means 73 guides the wind that has passed through the heater 30 to the ejection nozzle 47 through the heating dish 26. As a result, the wind delivers the steam to the ejection nozzle 47 without lowering the steam temperature, so that the steam can be ejected at a desired temperature without cooling. Moreover, since the radiant heat of the heater 30 is used effectively, the economical steam generator 10 can be provided.
[0053]
Moreover, since the 4th ventilation path formation means 74 guides a part of wind from the ventilation opening 19a toward the operation panel 14 side along the ventilation path W2, it is provided in the operation panel 14 and the back of this. The heat generated by the operation of the microcomputer 60 can be absorbed, and adverse effects due to the heat can be prevented.
[0054]
In the present embodiment, since the ultrasonic vibrator 31 and the fan unit 19 are driven after the temperature of water located in the vicinity of the temperature sensor 33 reaches 75 ° C., the heating time from the start to the generation of steam Is around 1 minute 30 seconds. Further, since the temperature of the water on the water surface is 80 ° C. or more, the temperature of the jetted steam is about 70 ° C. at the tip of the jet cylinder 47a of the jet nozzle 47, and the tip of the jet cylinder 47a. It becomes about 40 ° C. at the face position about 20 cm away from the face.
[0055]
Thereafter, the controller 64 further reads the temperature detection signal from the temperature sensor 33 and determines whether or not the water has reached the second set temperature T2, for example, 85 ° C. (step 9).
When the temperature of the water located at the temperature sensor 33 reaches the second set temperature T2 “85 ° C.”, the control unit 64 outputs a control instruction to the energization control unit 63. The energization control unit 63 controls the drive circuit 57 to energize the heater 30 at an energization rate of 4.25 amperes of 85% (see FIG. 12) (step 10).
[0056]
When the energization rate of the heater 30 is reduced, the control unit 64 determines whether or not there is a stop signal from the start / stop key 14b of the operation panel 14 (step 11).
When there is a stop signal, the control unit 64 controls the drive circuit 57 to stop the operation of the heater 30 and the ultrasonic transducer 31 (step 12).
[0057]
About 30 seconds after the heater 30 and the ultrasonic transducer 31 are stopped (step 13), the control unit 64 controls the drive circuit 57 to stop the operation of the fan unit 19 (step 14). Thereby, after cooling the inside of the main body 11, all the operations of the steam generator 10 can be stopped.
[0058]
If there is no stop signal, the control unit 64 compares the time from the start to the present with a preset operation time stored in the memory, and determines whether or not the time has elapsed (step 15).
When the time has elapsed, the control unit 64 performs the operation from step 12.
[0059]
When the user pushes the operating rod 38 after using the steam generator 10, the valve portion 37 in the drainage chamber 35 is opened, so that residual water in the water supply unit 15 and the heating unit 16 is discharged. The discharged water is discarded after being stored in the drain container 39. Thereby, propagation of various germs in the main body 11 can be prevented.
[0060]
【The invention's effect】
According to the steam generator according to the present invention, after the wind from the air outlet of the fan part passes through the ultrasonic vibrator by the first ventilation path forming means and passes through the heater by the second ventilation path forming means, The third ventilation path forming means passes steam on the heating dish and sends the steam to the ejection nozzle, so that the radiation heat from the heater to the ultrasonic vibrator is absorbed to prevent deterioration of the ultrasonic vibrator and the steam is removed. Can be ejected at optimum temperature. In addition, since the radiant heat of the heater is effectively used, an economical steam generator can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outer shape of a steam generator according to the present invention.
2 is a cross-sectional view taken along the line II in FIG.
3 is a cross-sectional view taken along the line II-II in FIG.
FIG. 4 is a top view showing a cross section of the steam generator according to the present invention.
5A and 5B are cross-sectional views showing a drainage chamber of the steam generator according to the present invention, in which FIG. 5A is a cross-sectional view of the drainage chamber in a non-drainage state, and FIG. is there.
FIG. 6 is a perspective view showing a steam ejection part.
FIG. 7 is a bottom view showing a steam ejection part.
FIG. 8 is a mounting view of a steam ejection part.
9A is a cross-sectional view illustrating the ejection nozzle, and FIG. 9B is a front view illustrating the ejection nozzle viewed from the direction A in FIG. 9A.
FIG. 10 is a block diagram showing a control system of a steam generator according to the present invention.
FIG. 11 is a flowchart showing the operation of the steam generator according to the present invention.
FIG. 12 is a timing chart showing the control operation of the control system according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Steam generator 11 Main body 11a Partition plate 14 Operation panel 19 Fan part 19a Air blower opening 20 of a fan part Heat sink (heat sink)
26 Heating dish 28 Large diameter part (upper part of heating dish)
29 Small diameter part (bottom of the heating pan)
30 Heater 31 Ultrasonic vibrator 32 Heat shield plate 44 Blower 45 Steam guide tube 47 Jet nozzle 71 First ventilation path forming means 72 Second ventilation path forming means 73 Third ventilation path forming means 74 Fourth ventilation path forming means

Claims (4)

A heating dish in which water is stored; a heater for heating the water; an ultrasonic vibrator for atomizing the water; and an ejection nozzle for ejecting the atomized water to the outside as steam; A fan unit having an air outlet for sending wind to send the steam to the ejection nozzle, and a main body for housing the heating dish, the heater, the ultrasonic transducer, and the fan unit, A steam generator provided at an upper part of a heating dish, wherein the ultrasonic vibrator is provided at a bottom part of the heating dish, and the air blowing port is located below the heating dish ;
A first air passage forming means for guiding towards the wind from the front Symbol blower opening to the ultrasonic transducer, wherein the second air passage forming means for guiding towards the wind the heater that has passed through the ultrasonic vibrator A third ventilation path forming means for guiding the wind that has passed through the heater to the ejection nozzle to eject the steam on the heating dish, and extending along the vertical direction, and the heating dish and the fan unit. A partition plate for partitioning and dividing the main body, a radiator plate provided with a drive circuit board having a drive circuit for driving the heater, the ultrasonic vibrator, and the fan unit, the heater, and the ultrasonic wave A heat shield for partitioning the vibrator and blocking heat from the heater;
The partition plate has an opening for disposing the air blowing port, the heat shield plate is located at a side portion of the heating dish and extends in a substantially horizontal direction, and the heat radiating plate has an opening of the opening. Located at the front and disposed below the heat shield plate, the main body, the partition plate, the heat radiating plate, and the heat shield plate constitute the first ventilation path forming means and the second ventilation path forming means. A steam generator characterized by that.   A steam guide tube that is attached to cover the heating dish, communicates with the ejection nozzle, guides the steam from the heating dish to the ejection nozzle, and communicates with the steam guide cylinder and wind that passes through the heater The steam generator according to claim 1, further comprising: a blower that guides the steam to the steam guide tube, wherein the blower and the steam guide tube form the third ventilation path forming unit.   An operation panel provided on the main body; and a heat radiating plate provided with a driving circuit board having a driving circuit for driving the heater, the ultrasonic vibrator, and the fan unit, and the heat radiating plate includes the air blower It is arranged along the inner wall surface to guide a part of the wind from the mouth along the inner wall surface of the main body toward the operation panel side, and constitutes a fourth ventilation path forming means together with the inner wall surface The steam generator according to claim 1, wherein: A heating dish in which water is stored; a heater for heating the water; an ultrasonic vibrator for atomizing the water; and an ejection nozzle for ejecting the atomized water to the outside as steam; A fan unit having an air outlet for sending wind to send the steam to the ejection nozzle, and a main body for housing the heating dish, the heater, the ultrasonic transducer, and the fan unit, A steam generator provided at an upper part of a heating dish, wherein the ultrasonic vibrator is provided at a bottom part of the heating dish, and the air blowing port is located below the heating dish;
First ventilation path forming means for guiding the wind from the blower port toward the ultrasonic vibrator, and second ventilation path forming means for guiding the wind that has passed through the ultrasonic vibrator toward the heater; Third ventilation path forming means for guiding the wind that has passed through the heater to the ejection nozzle to eject the steam on the heating pan, an operation panel provided in the main body, the heater, and the ultrasonic transducer And a heat sink provided with a drive circuit board having a drive circuit for driving the fan unit,
The heat radiating plate, the disposed part of the air from the blower opening along the inner wall surface and along the inner wall surface to guide toward the operation panel side of the body, together with the inner wall surface, the features and be away team generator to constitute a four ventilation path forming means.

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