JP2002119423A - Humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a humidifier capable of efficiently humidifying and keeping the temperature and humidity optimum in a show case. SOLUTION: In this humidifier 1, water in a feed water tank 23 pumped up by a feed water pump 28 is fed from a water feed pipe 45 to an evaporation plate 53 heated by an electric heater 51 to instantaneously generate steam, and the steam is jetted from a steam nozzle 48 formed in a top plate 47 of an enclosure 2 into the show case 3. The water can be quickly heated to efficiently humidify. Detection signals of a temperature sensor T and a humidity sensor S are fed back to a control unit C to perform duty-control for the heating and humidifying control to the electric heater 51 and the feed water pump 28 so that the ratio of the heating control time to the humidifying control time is varied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steamer for steaming food.

[0002]

2. Description of the Related Art In convenience stores, fast food stores, restaurants and the like, a steamer is used to steam food such as anman and meatballs. The steamer is shown in FIGS.
As shown in FIG. 6, water in a pot p disposed in a housing serving as a base of the showcase k is heated by a heater h to generate high-temperature steam, and the steam is jetted into the showcase k. I try to steam. As the heater h, a resistance type electric heater such as a sheathed heater is used, and ON / OFF control is performed by a controller c. The temperature detected by the temperature sensor t installed in the showcase K is fed back to the controller c. When the temperature sensor t detects the set steaming temperature of the food, the heater h is turned off. When the temperature in the showcase k falls below the set temperature, the heater h is turned on again, and when the temperature exceeds the temperature range, the heater h is turned off. Thereby, the inside of the showcase k is maintained at the heat retaining temperature.

[0003]

However, since the same heater h is turned on even when the temperature is kept warm, the water in the pot p is heated to generate steam, the steam in the showcase k becomes supersaturated, and the foodstuffs are lost. It absorbs excess moisture and reduces flavor, and shortens the shelf life. Further, the types of steamed foods are also limited. Further, since the pot p also serves as a water supply tank and a drainage tank, there is a disadvantage that condensed water adhering in the showcase flows back to the pot p and is supplied again with the smell of foods attached. Further, it is necessary to replace the water in the pot p each time the operation is started, and since the pot p serves both as a water supply tank and a drainage tank, there is a problem that the amount of water to be replaced is large and it takes time and effort. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a steamer that can efficiently steam and maintain the temperature and humidity in a showcase optimally.

[0004]

According to a first aspect of the present invention, there is provided a steamer, comprising: a housing having a steam ejection hole formed on an upper surface thereof; a showcase formed on the housing; A water supply tank disposed in the housing, an electric heater, an evaporating dish heated by the electric heater, a water supply pump for pumping water in the water supply tank, and a water supply for supplying the pumped water to the evaporating dish And a tube, wherein steam generated from the evaporating dish is spouted from the steam spout hole of the housing into the showcase.

A steamer according to a second aspect is characterized in that, in the configuration according to the first aspect, the evaporating dish is made of a casting, and the electric heater is cast and integrally formed.

According to a third aspect of the present invention, there is provided a steamer having a housing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the housing, a water supply tank provided in the housing, and A water supply pump for pumping water from a water supply tank, a cast heater in which a plurality of electric heaters are arranged and arranged in parallel at intervals, and a water supply pump in a groove formed between the electric heaters on an upper surface of the cast heater; And a water supply pipe for supplying water pumped up by the heater, and the water supplied to the groove and flowing down is heated by the electric heater to generate steam, and the steam is discharged from the steam outlet of the housing to the inside of the showcase. It is characterized in that it gushes out.

[0007] A steamer according to a fourth aspect of the present invention is a steamer having a casing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the casing, a water supply tank disposed in the casing, and A water supply pump for pumping water from a water supply tank, an electric heater, and a cast heater having a flow passage through which water flows down, and a water supply pipe for supplying water drawn by the water supply pump to the flow passage. And the water supplied to the flow passage and flowing down is heated by the electric heater to generate steam, and is spouted from the steam spout hole of the housing into the showcase. I do.

[0008] A steamer according to a fifth aspect of the present invention is a steamer having a casing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the casing, a water supply tank disposed in the casing, and A water supply pump for pumping water from a water supply tank, an electric heater, a watering body disposed above the electric heater, and a water supply pipe for supplying water pumped to the watering body by the water supply pump, The water sprinkled from the water sprinkler is heated by the electric heater to generate steam, and is spouted from the steam spout hole of the housing into the showcase.

[0009] The steamer according to the sixth aspect is the first aspect.
In the configuration according to any one of claims to 5, a temperature sensor and a humidity sensor are installed in the showcase, and based on detection signals of the temperature sensor and the humidity sensor,
A control unit for controlling the inside of the showcase to a set temperature and a set humidity by turning on and off the electric heater and the water supply pump is provided in the housing.

[0010] The steamer according to claim 7 is the steamer according to claim 6.
Wherein duty ratio control is performed such that a ratio between a control time for the electric heater and a control time for the water supply pump can be varied within a sampling cycle of the temperature sensor and the humidity sensor.

[0011] The steamer according to the eighth aspect is the sixth aspect.
In the configuration according to any one of claims to 7, the sampling cycle of the temperature sensor and the humidity sensor can be changed.

[0012] The steamer according to the ninth aspect is the sixth aspect.
In the configuration according to any one of claims to 8, an additional cooking function that is performed based on a temperature setting at the time of additional cooking is added.

According to a tenth aspect of the present invention, in the steamer according to any one of the first to ninth aspects, a stirring fan is provided in the showcase.

[0014]

The steamer according to the first aspect of the present invention supplies water from a water supply tank pumped up by a water supply pump to a vaporization dish heated by an electric heater from a water supply pipe to generate steam. Then, the generated steam is jetted into the showcase from a steam jetting hole formed on the upper surface of the housing. Since the evaporating dish is heated by the electric heater to generate steam, it can be quickly heated and steamed efficiently.

In the steamer according to the second aspect, since the evaporating dish is made of a casting and an electric heater is cast and integrally formed, no trouble is required in handling and assembling, thereby contributing to cost reduction.

The steamer according to the third aspect of the present invention supplies water from a water supply tank pumped up by a water supply pump to a groove formed between adjacent electric heaters on the upper surface of the casting heater to generate steam, The steam is blown out into the showcase from the steam blowout hole formed on the upper surface of the housing. By raising the temperature inside the showcase with the heat of the upper surface of the cast heater heated by the electric heater, it is possible to heat quickly and to steam efficiently. Also, since no evaporating dish is required,
It can contribute to cost reduction without the trouble of handling and assembly.

The steamer according to the fourth aspect of the present invention is a steamer in which a flow passage formed inside a cast heater into which an electric heater is cast is provided.
The water in the water supply tank pumped up by the water supply pump is supplied from a water supply pipe to flow down to generate steam, which is spouted into a showcase from a steam spout hole formed on the upper surface of the housing. Since the water flow passage is formed inside the cast heater, the heat efficiency is improved, and the temperature in the showcase is raised by the heat on the upper surface of the cast heater, whereby the heat can be quickly heated and the steam can be efficiently steamed. Further, since an evaporating dish is not required, handling and assembling are not required, which contributes to cost reduction.

In the steamer according to the fifth aspect, the water in the water supply tank pumped up by the water supply pump is supplied from the water supply pipe to the water sprinkler, and water is sprinkled from the upper part of the electric heater to generate steam. From the steam vent formed in the showcase. Since the electric heater and the sprinkler are combined, the structure is simple and the handling is easy.

In the steamer according to the present invention, the control unit controls on / off of the electric heater and the water supply pump based on the detection signals of the temperature sensor and the humidity sensor, thereby setting the set temperature and the set humidity in the showcase. To control. Therefore, the inside of the showcase can be controlled to the automatically set temperature and humidity, and the flavor of the steamed food can be maintained.

The steamer according to the present invention performs duty control in which the ratio between the control time for the electric heater and the control time for the water supply pump can be varied within the sampling cycle of the temperature sensor and the humidity sensor. Efficient control corresponding to humidity becomes easy. Heating the evaporating dish with the electric heater and supplying water onto the heated evaporating dish alternately based on the duty ratio makes it easy to control the humidity because steam is generated instantaneously and intermittently. Also, the evaporating dish can be used for both heating and humidification.

In the steamer according to the present invention, since the sampling cycle of the temperature sensor and the humidity sensor can be changed, delicate control corresponding to the set temperature and the set humidity becomes easy.

In the steamer according to the ninth aspect of the present invention, since a re-cooking function is performed based on the temperature setting at the time of re-cooking, frozen food or the like is replenished on the way, and the temperature in the showcase is rapidly lowered. Even in this case, the temperature can be restored in a short time.

In the steamer according to the tenth aspect, since a stirring fan is provided in the showcase, the temperature and humidity in the showcase become uniform, and accurate control is possible.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described with reference to the accompanying drawings. Figure 1 is a steamer 1
FIG. 2 is an exploded perspective view of the same. As shown in FIG. 1, the steamer 1 has a showcase 3 formed on an upper surface of a casing 2 having a square shape in plan view, which constitutes a base. The showcase 3 includes a gate-shaped storage frame 4 provided on the upper surface of the housing 2.
A glass case main body 5 is fitted on the front side of the vehicle, and a door 6 that is opened and closed by a hinge (not shown) is mounted on the rear side. The case body 5 includes side walls 7, 7 on both sides that are continuous with the front surface of the storage frame 4, and a front surface 8 that blocks between the side walls 7, 7.
And is formed from The front portion 8 is formed in an arc shape from the upper surface to the front surface.

As shown in FIG. 2, upper and lower three-stage shelf receiving pieces 9 are provided on the opposing inner surfaces of the storage frame 4. A glass guide plate 1 for guiding condensed water is provided on the upper shelf receiving piece 9.
0 is placed. On the shelf receiving pieces 9 in the middle and lower stages, a lattice-shaped shelf 11 on which an anman or meat bean is placed is placed. Each of the guide plate 10 and the shelf 11 is placed in a posture in which the front diagonally lowers downward. Further, a temperature sensor T and a humidity sensor S are provided at predetermined locations on the inner surface of the storage frame 4 facing each other. Further, a stirring fan 12 is provided at a predetermined position of the storage frame 4.

On the bottom plate 21 of the housing 2, a control unit C, a water supply tank 23 and a drainage tank 24 are arranged in this order from the front.
Are arranged. A partition plate 25 stands between the control unit C and the water supply tank 23 and the drainage tank 24. Further, the bottom plate 21 is provided with a ventilation hole 26 around the control unit C. The water supply tank 23 is provided with a water supply pump 28 having a discharge port 27 facing upward. On the lower surface of the bottom plate 21, rubber legs G are provided at four corners.
Is attached.

The left and right side walls 29 of the housing 2 have
Ventilation holes 30 and 31 are respectively formed. Further, a ventilation hole 33 is formed in the front wall 32 of the housing 2. An operation panel CP and a water meter 35 are attached to the rear wall 34. The water meter 35 is formed of a transparent synthetic resin such as an ABS clear resin, and the bottom thereof is connected to the water supply tank 23 by a water supply pipe 36. And the water meter 35
A water supply port 38 for opening the upper lid 37 to supply water to the water supply tank 23 is formed at an upper portion of the water supply tank 23. Also, the back wall 3
4, an opening 39 is formed below the operation panel CP to take the drain tank 24 in and out. Furthermore, the side wall 2
L-shaped shelf pieces 40 are attached to opposed inner surfaces 9 and 29, and a water receiving tank 41 is placed thereon.

The water receiving tank 41 is made of aluminum casting, and the casing 2
Is almost tightly fitted. An electric heater 51 is cast into the bottom of the water receiving tank 41. A heat insulating plate 52 such as a ceramic plate or a heat-resistant glass plate is adhered to the back surface of the water receiving tank 41 so as to be insulated so that the heat of the electric heater 51 does not reach the control unit C. An evaporating dish 53 made of aluminum casting is placed in the water receiving tank 41. Water receiving tank 41
An L-shaped water supply pipe 45 for supplying water to the evaporating dish 53 is inserted through the side wall. In addition, a drain pipe 46 filled with a water-containing filter such as felt or nonwoven fabric is attached to the bottom.

An upper surface plate 47 for detachably closing the upper surface of the housing 2
Is provided with a steam ejection hole 48 at the outer peripheral edge thereof, and a U-shaped handle 49 which is freely retractable at the center thereof.
Note that the depth of the water receiving tank 41 can be set or cooling fins can be provided so that an appropriate cooling space is formed between the electric heater 51 and the control unit C. Further, as shown in FIG. 4, a water receiving tank 41a may be attached to the housing 2, and the evaporating dish 53 placed on the water receiving tank 41a may be made of aluminum casting, and the electric heater 51 may be cast to be integrally formed. The evaporating dish 53 and the electric heater 51 are integrated, so that handling and assembling can be performed without any trouble, which can contribute to cost reduction.

In the steamer 1 having the above-described structure, the temperature and humidity in the showcase 3 detected by the temperature sensor T and the humidity sensor S are detected by a microcomputer (not shown) constituting the control unit C as shown in FIG. The electric heater 51 and the water supply pump 28 are turned on / off by a predetermined control program by feedback, so that the food placed on the shelf 11 of the showcase 3 is steamed and kept warm.
The stirring fan 12 constantly stirs the inside of the showcase 3.

The temperature and humidity during the heat retention and the temperature and humidity during the additional cooking are set on the operation panel CP. For example, the temperature during warming is set at 70 to 85 ° C, the humidity is set at 70% to 75%, the temperature during additional cooking is set at around 90 °, and the humidity is set at about 99%.

The electric heater 51 by the control unit C
The outline of the control for the water supply pump 28 will be described with reference to the flowchart in FIG. The heat retention temperature and humidity and the temperature for additional cooking are set on the operation panel CP. When the control starts, first, in step S10, the temperature and the humidity in the showcase 3 are detected by the temperature sensor T and the humidity sensor S at a set sampling cycle and fed back. Subsequently, in step S15, the set temperature Ts is compared with the detected temperature ts. If Ts> ts, the process proceeds to step S20, outputs a power proportional to (Ts−ts), drives the electric heater 51 to perform heating control, and proceeds to step S30. If it is determined in step S15 that Ts ≦ ts, the power output is stopped in step S25, and the process proceeds to step S30.

In step S30, the set humidity Ss
And the detected humidity ss. If Ss> ss, the process proceeds to step S35, in which the water supply pump 28 is driven for a pump rotation time proportional to (Ss-ss) to perform humidification control, and then proceeds to step S45. In step S30, S
If it is determined that s ≦ ss, the pump rotation time is set to zero in step S40, the water supply pump 28 is stopped, and the process proceeds to step S45. In step S45, it is determined whether or not a manual reheating switch (not shown) has been turned on. If it is not turned on, the process returns to step S10 to repeat the above-described heating control and humidification control.

In the heating control in steps S10 to S25 and the humidification control in steps S30 to S40, the ratio between the heating control time and the humidification control time (duty cycle) within the sampling cycle of the temperature sensor T and the humidity sensor S as shown in FIG. Ratio) is 1:
Duty control that can be varied between 1 and 1:10 is performed. The duty ratio is set on the operation panel CP. In the heating control, the evaporating dish 53 is heated by the electric heater 51. Steam is instantaneously generated by supplying water from the water supply pipe 45 onto the heated evaporating dish 53, and the generated steam is jetted into the showcase 3 from a steam jet hole 48 formed on the upper surface of the housing 2. In this case, the rotation time of the water supply pump 28 is controlled so that an amount of water necessary for the humidification control can be supplied. The sampling cycle of the temperature sensor T and the humidity sensor S can be changed from 1 second to 54 seconds at intervals of 6 seconds.

If the manual reheating switch is turned on in step S45, the temperature ts in the showcase 3 is detected by the temperature sensor T and fed back in step S50. Subsequently, in step S55, the set temperature Ts1 at the time of additional cooking is compared with the detected temperature ts. If Ts1> ts, the process proceeds to step S60 (T
s1−ts), and outputs electric power proportional to
1 to control heating. Then, step S65
Then, the water supply pump 28 is driven to humidify, and the process returns to the step S50 to repeat the additional cooking control. If it is determined in step S55 that Ts1 ≦ ts, the process returns to step S10. The duty control described above is also performed in this additional cooking control.

In the additional cooking control, when the temperature or humidity in the showcase 3 is suddenly reduced by replenishing frozen foods or the like on the way, heating is controlled based on the set temperature at the time of additional cooking and humidification is performed. Thereby, the replenished food can be steamed in a short time, and the temperature can be returned in a short time, and the same as the process at the time of starting the steamer 1,
The food is heated in a substantially supersaturated state without any restrictions on humidity control to steam the food.

The steamer 1 described in the first embodiment is
The water in the water supply tank 23 pumped by the water supply pump 28 is supplied to the water supply pipe 45 to the evaporating dish 53 heated by the electric heater 51.
And instantaneously generates steam, and spouts the steam into the showcase 3 from a steam spouting hole 48 formed in the upper surface plate 47 of the housing 2, enabling rapid heating and efficient steaming Can be. Further, a temperature sensor T and a humidity sensor S
The heating and humidification control of the electric heater 51 and the water supply pump 28 by the control unit C to which the detection signal is fed back is performed by duty control that can change the ratio of the heating control time to the humidification control time. Therefore, it is easy to control the humidity. Efficient control corresponding to the set temperature and the set humidity is facilitated, and the flavor of the steamed food can be maintained. And the temperature sensor T
And the sampling cycle of the humidity sensor S can be changed, so that delicate control corresponding to the set temperature and the set humidity becomes easy.

In addition, the configuration can be simplified because the evaporating dish 53 can be used for both heating control and humidification control. Also,
Since the function of re-cooking from the middle is added, even if the temperature in the showcase 3 is suddenly lowered due to replenishment of frozen foods or the like on the way, re-cooking is performed and the set temperature and the set humidity are quickly returned to the set temperature and the set humidity. be able to. And, since the stirring fan 12 is installed in the showcase 3, the temperature and humidity in the showcase 3 become uniform, and accurate control becomes possible.

Further, a handle 49 is provided on the upper surface plate 47 of the housing 2.
Is provided and made detachable, so that maintenance such as cleaning of the electric heater 51 becomes easy. In the drain pipe 46 of the water receiving tank 41,
Since the filter is filled with a water-containing filter such as a felt or a nonwoven fabric, it is possible to prevent the vapor from entering the lower part of the housing 2 to cause a short circuit of the control unit C and rust. Then, from the drain pipe 46, the water receiving tank 41 and the upper surface plate 4
Since only the water that has condensed on the back surface of 7 is drained, the amount of drainage is small. Further, since the drainage tank 24 can be taken in and out through the opening 39 formed in the rear wall 34 of the housing 2, the drainage can be easily processed. In addition, there is an advantage that condensed water attached to the ceiling of the showcase 3 flows down along the arc-shaped portion formed from the upper surface to the front surface of the case body 5 and does not directly fall on the guide plate 10. .

(Second Embodiment) The second embodiment of the present invention is different from the first embodiment only in the form of the heater provided in the water receiving tank 41a of the steamer 1. The casting heater 61 shown in FIGS. 8 to 10 is one in which two substantially ring-shaped electric heaters 62 and 63 having different diameters are arranged concentrically and substantially horizontally, and cast into an aluminum casting.
An arc-shaped groove 64 is formed between the electric heaters 62 and 63 on the upper surface of the substantially ring-shaped casting heater 61.
At one end of the cast heater 61, a connection pipe portion 66 having a communication hole 65 communicating with the groove 64 is formed, and at the other end, a connection portion 67 having the groove 64 terminated is formed. A heat insulating material 68 is attached to the lower surface of the cast heater 61.

In the casting heater 61, the connecting pipe 66 at one end is fitted and fixed to the side wall of the water receiving tank 41a, and the connecting part 67 at the other end is slightly lower than the connecting pipe 66 so that the water receiving tank 41a is closed. It is fixed to the side wall. And the connecting pipe 66
The water supply pipe 45 is inserted and connected to the communication hole 65. The water supplied from the water supply pipe 45 flows into the groove 64 heated by the electric heaters 62 and 63 through the communication hole 65, and evaporates instantaneously into steam.

The steamer 1 according to the second embodiment in which the casting heater 61 is disposed has an arc-shaped groove 64 formed between adjacent electric heaters 62 and 63 on the upper surface of the casting heater 61.
Then, the water in the water supply tank 23 pumped by the water supply pump 28 is supplied from the water supply pipe 45 to generate steam, and is spouted into the showcase 3 from the steam spouting hole 48 formed in the upper surface of the housing 2. By raising the temperature in the showcase 3 by the heat of the upper surface of the casting heater 61 heated by the electric heaters 62 and 63, the showcase 3 can be rapidly heated and steamed efficiently. Further, since an evaporating dish is not required, handling and assembling are not required, which contributes to cost reduction.

(Third Embodiment) A third embodiment of the present invention differs from the first embodiment only in the form of the heater provided in the water receiving tank 41a of the steamer 1 as in the second embodiment. Things. As shown in FIGS. 11 and 12, the casting heater 71 is a plate heater made of an aluminum casting in which a pipe member 73 serving as a water flow path 72 to the inside is simultaneously cast when an electric heater (not shown) is cast. It is. The pipe member 73 has a meandering portion in the middle of casting, and has ends 74 and 75 protruding from a side portion of the casting heater 71. And one end 74 is the water receiving tank 41a.
And is fixed to the water supply pipe 45. The water supplied from the water supply pipe 45 is heated by the electric heater while flowing down the inside of the pipe member 73, evaporates instantaneously and becomes steam, and is ejected from the end 75.

The steamer 1 according to the third embodiment, in which the casting heater 71 is provided, supplies water from a water supply tank 23 pumped by a water supply pump 28 to a pipe member 73 cast into the interior of the casting heater 71 from a water supply pipe 45. And heated to the end 7
The steam spouting from 5 is spouted into the showcase 3 from a steam spouting hole 48 formed in the upper surface of the housing 2. The pipe member 73 is cast into the interior of the cast heater 71 to form a water flow passage. Therefore, the thermal efficiency is improved, and the temperature in the showcase 3 is rapidly increased by the heat of the upper surface of the cast heater 71. It can be heated and steamed efficiently. Further, since no evaporating dish is required as in the case of the second embodiment, no trouble is required for handling and assembling, and it is possible to contribute to cost reduction.

(Fourth Embodiment) The fourth embodiment of the present invention differs from the first and second embodiments only in the form of the heater provided in the water receiving tank 41a of the steamer 1 in the first embodiment. It is different. As shown in FIGS. 13 and 14, the electric heater 81 is formed by alternately forming linear portions 82 and curved portions 83 and meandering, and is horizontally disposed on the bottom surface of the water receiving tank 41a. A watering body 84 is arranged above the electric heater 81.

The water sprinkling body 84 is a hollow body formed in a flat plate shape that covers substantially the entire electric heater 81, and has a plurality of water sprinkling holes 85 formed on the bottom surface thereof.
3 is formed. Further, a connection pipe portion 86 is integrally formed with the water spray body 84, and is fitted and fixed to the side wall of the water receiving tank 41 a, and is connected to the water supply pipe 45. Water pipe 4
5 is supplied from a watering hole 85 of a watering body 84.
Water is sprinkled on the electric heater 81 and instantaneously evaporates into steam.

The steamer 1 according to the fourth embodiment, in which the electric heater 81 and the water sprinkler 84 are disposed, supplies water from the water supply tank 23 pumped by the water supply pump 28 to the water sprinkler 84 from the water supply pipe 45.
And water is sprinkled from the upper portion of the electric heater 81 to generate steam, and is spouted into the showcase 3 from a steam spouting hole 48 formed in the upper surface of the housing 2. Since the electric heater 81 and the watering body 84 are combined, the configuration is simple and the handling is easy.

The steamer 1 according to the second to fourth embodiments
And the control of the temperature and the humidity according to the first embodiment. Further, the electric heater described in the second embodiment does not need to be ring-shaped and need not be two.

[Brief description of the drawings]

FIG. 1 is a perspective view of a steamer according to a first embodiment.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a sectional view of a housing portion on which a water receiving tank is placed.

FIG. 4 is a sectional view of a housing portion on which another water receiving tank is placed.

FIG. 5 is a schematic block diagram of a control circuit.

FIG. 6 is a flowchart showing an outline of control.

FIG. 7 is an explanatory diagram showing duty control.

FIG. 8 is a front view of a cast heater disposed in a water receiving tank of the steamer according to the second embodiment.

FIG. 9 is a plan view of the same.

FIG. 10 is a sectional view of a cast-in heater.

FIG. 11 is a perspective view of a cast heater provided in a water receiving tank of the steamer according to the third embodiment.

FIG. 12 is a front view of the same.

FIG. 13 is a front view of a cast heater provided in a water receiving tank of the steamer according to the fourth embodiment.

FIG. 14 is a partially cutaway plan view of the same.

FIG. 15 is a lower cross-sectional view of a conventional steamer.

FIG. 16 is a schematic front view of FIG.

[Explanation of symbols]

 1. Steamer 2. Housing 3. Showcase 4. Storage frame 12. Fan for stirring 23 ... Water tank 28 ... Water pump 41, 41a ... Water receiving tank 45 ... water supply pipe 48 ... steam ejection hole 51,62,63,81 ... electric heater 52 ... insulating plate 53 ... evaporating dish 61,71 ... cast heater 64 ... groove 72 ... flow passage 73 ... pipe member 84 ... sprinkler T ... temperature sensor S ... humidity sensor C ... control unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoto Otani 463 Morichu Tadashi, Kuwana City Inside Chubu Corporation (72) Inventor Mitsuo Uchiyama 463 Morichu Oaza, Kuwana City F-term in Chubu Corporation Co., Ltd. Reference) 4B055 AA22 BA66 CA71

Claims (10)

[Claims] 1. A housing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the housing, a water supply tank disposed in the housing, an electric heater, and heating by the electric heater. And a water supply pump for pumping water from the water supply tank, and a water supply pipe for supplying the pumped water to the evaporating dish. A steamer, wherein the steam is blown out of the hole into the showcase. 2. The steamer according to claim 1, wherein the evaporating dish is made of a casting, and the electric heater is cast and integrally formed. 3. A housing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the housing, a water supply tank disposed in the housing, and a water supply pump for pumping water from the water supply tank. And a cast heater in which a plurality of electric heaters are arranged in parallel at intervals and cast, and water pumped by the water supply pump is supplied to a groove formed between the electric heaters on an upper surface of the cast heater. A water supply pipe, wherein the water supplied to the groove and flowing down is heated by the electric heater to generate steam, and is spouted from the steam spout hole of the housing into the showcase. Features steamer. 4. A housing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the housing, a water supply tank disposed in the housing, and a water supply pump for pumping water from the water supply tank. And a water supply pipe for supplying water pumped into the flow passage by the water supply pump, and a cast heater in which an electric heater is cast and a flow passage through which water flows down is formed. Steam generated by heating the water supplied and flowing down to the electric heater by the electric heater, and ejecting the steam from the steam ejection hole of the housing into the showcase. 5. A housing having a steam ejection hole formed on an upper surface thereof, a showcase formed on the housing, a water supply tank disposed in the housing, and a water supply pump for pumping water from the water supply tank. , An electric heater, a watering body disposed above the electric heater, and a water supply pipe for supplying water pumped to the watering body by the water supply pump, and water sprinkled from the watering body is formed. A steamer, wherein the steam is generated by heating with the electric heater, and is spouted into the showcase from a steam spout hole of the housing. 6. A temperature sensor and a humidity sensor are installed in the showcase, and the electric heater and the water supply pump are turned on / off based on detection signals from the temperature sensor and the humidity sensor, and The steamer according to any one of claims 1 to 5, wherein a control unit that controls the inside of the housing to a set temperature and a set humidity is provided in the housing. 7. The steamer according to claim 6, wherein a duty control is performed so that a ratio between a control time for the electric heater and a control time for the water supply pump can be changed within a sampling cycle of the temperature sensor and the humidity sensor. . 8. The steamer according to claim 6, wherein a sampling cycle of the temperature sensor and the humidity sensor is variable. 9. The steamer according to claim 6, further comprising a re-cooking function performed based on a temperature setting during re-cooking. 10. The steamer according to claim 1, wherein a stirring fan is provided in the showcase.