KR101439319B1 - Water direct injection type steam oven - Google Patents

Abstract

Disclosed is a direct water injection type steam oven. The present invention provides a direct water injection type steam oven which includes a water solenoid valve which controls the water supply from an external water source; at least one water pipe line which supplies water passing the water solenoid valve to each heat source; and a steam generation part which receives water from one among the water pipe lines, changes the supplied water into water molecules, touches them with at least one heat source to generate steam in at least one interval and to induce them to an oven cooking room. The present invention increases the amount of steam in an oven, makes temperature distribution uniform, or reduces a difference to improve cooling quality.

Description

[0001] WATER DIRECT INJECTION TYPE STEAM OVEN [0002]

The present invention relates to a direct water jet type steam oven, and more particularly, to a direct water jet type steam oven which increases the amount of steam generated in the oven and uniformizes the temperature distribution within the oven or reduces the difference.

The steam oven is a cooking device that generates steam and cooks various kinds of food such as steam and steam. Various methods are known for forming or generating steam.

Korean Patent Laid-Open No. 10-2009-0108827 and Korean Patent Application No. 10-2004-0089904 describe a steam oven and a separate steam generator.

A steam oven having a separate steam generator has high energy consumption and high operation costs. On the other hand, the direct injection method which directly injects water to a plurality of inexpensive heaters causes the water to be branched into a plurality of heat sources by using one water channel, But it is difficult to generate steam uniformly at different time intervals and compartments.

1 is a schematic diagram of a conventional steam oven to which a direct water injection system is applied.

1, a conventional steam oven 10 to which a direct water spraying method is applied comprises a cabinet housing 12 having a cooking chamber 11 therein and a steam generating device 20 for providing steam to the cooking chamber 11 ).

A door 13 for opening and closing the cooking chamber 11 is coupled to the front surface of the cabinet housing 12. An operation portion (not shown) provided with a display device for various operation switches and notifications is disposed in the door 13, And a convection fan (not shown) installed at the rear of the cooking chamber 11 to circulate the air inside the cooking chamber 11, a cooling water tank 14 for recovering the moisture of the cooking chamber 11, Drain portion 15 is formed.

The steam generator 20 includes a water column 22 for controlling direct water supply from an external water source 21 such as a water supply, a water supply line 23 for supplying direct water passing through the water column 22, 30).

The steam generator 30 includes a heater (not shown) installed in the cabinet housing 12 to heat water sprayed through the water supply line 23, a blower (not shown) that spreads water sprayed from the water supply line 23 A drive motor 33 for transmitting rotational power to the blower 32, and a shaft 34 for transmitting a rotational force to the blower 32. [

This direct water injection type steam oven can directly send water to the heat source to generate steam and send it to the cooking chamber. Therefore, the energy consumption and the operation cost can be reduced as compared with the operation of the separate steam generating device, And there is a limit to continuously supplying or maintaining uniform steam for each compartment.

Also, in the initial operation, the center of the heat source forms a high temperature zone and the peripheral portion forms a relatively low temperature zone, and there is a steam formation lag which is divided into a high-temperature zone. Even in the steam activation process, the center of the heat source forms a high-temperature zone, which indicates a temperature distribution that is compartmentalized, thereby making it difficult to uniformize the cooking quality. In addition, there is a limit in generating sufficient steam amount suited to a high internal volume.

Therefore, a direct water-spray type steam oven was required to sufficiently obtain the amount of steam generated by the steam oven according to the internal volume, to uniformize the distribution of temperature inside the furnace, or to minimize the difference.

Patent Document 1. Korean Patent Laid-Open No. 10-2009-0108827 Patent Document 2: Korean Patent Application No. 10-2004-0089904

It is an object of the present invention to provide a steam oven using a plurality of heat sources in a direct water spray type steam oven in which a steam generator is not installed It has its purpose.

It is another object of the present invention to provide a steam oven which secures an amount of steam that can sufficiently fill the inside of a furnace by discharging water flowing from a water supply pipe into a plurality of heat sources.

It is a further object of the present invention to provide a steam oven which uniformly discharges water simultaneously to a plurality of heat sources to minimize a temperature unevenness temperature distribution formed by a height difference.

It is still another object of the present invention to provide a high-reliability steam oven which improves the quality of cooking by reducing the difference in temperature distribution inside the steam oven.

In an embodiment of the present invention, the direct water spray type steam oven includes a high-temperature cooking cavity in which steam flows, a cabinet housing, a steam generator for flowing high-temperature steam to the cooking chamber, In a direct water jet type steam oven comprising an intermittent water passage,

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At least one water supply pipe for supplying water to each of the heat sources,

A steam generating unit for directly supplying water from one of the water supply lines and making the supplied water into water molecules and at least one of the heat sources to generate steam in at least one section, ; ≪ / RTI >

And a quenching box for collecting the jet particles formed in the steam generating part and the water particles generated in the cooking chamber to be integrated with the flow paths of the water bodies and re-supplying or disposing them to the heat source .

Preferably, the control unit opens the opening and closing timings of the water valve according to the height difference between the water pipes.

Preferably, the heat source is a coil-type heater in which a circular pipe is wound and laminated.

The steam generating unit may further include a water wall for preventing water particles formed in the steam generating unit from flowing into the interior of the steam generating unit.

Preferably, the steam generating unit includes: a laminated coil heater attached to a wall surface of the cabinet housing to heat water sprayed through the water pipe; A blower having a blade for converting water sprayed from the water supply line into fine water molecules and evenly scattering the water molecules to spread water molecules in a uniform distribution on the surface area of the heater; A drive motor for rotating the blower; And a spray shaft which transmits the driving motor power to the blower and has a V-shaped groove.

The direct water jet type steam oven according to the embodiment of the present invention has an effect of sufficiently obtaining the amount of steam generated according to the high internal volume, uniformizing the distribution of temperature inside the furnace, or providing a steam oven in which the temperature distribution difference is minimized.

In addition, the steam oven has a small time lag when steam is generated in the high-end section, and uniform steam can be supplied or maintained in each section.

In addition, in a commercial steam oven using a plurality of heat sources, water is supplied to each heat source through an individual water line, and water can be supplied at a uniform and appropriate water pressure.

In addition, it is possible to obtain a high quality cooking quality by reducing the temperature distribution difference of the steam oven.

1 is a block diagram of a conventional direct water jet type steam oven.
FIG. 2 is a schematic view of a direct water jet type steam oven according to an embodiment of the present invention; FIG.
3 is a view illustrating a steam generator of a direct water jet type steam oven according to an embodiment of the present invention.
4 is a rear view of a direct water jet type steam oven according to an embodiment of the present invention.
FIG. 5 is a detailed view of a steam generator of a direct water-jet type steam oven according to an embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The steam oven has an indirect water injection type in which water is sprayed to a heat source to generate steam, and a steam generating device is separately placed in a separate position from the steam generating device to generate steam, and then steam is sent to the cooking chamber. And direct water injection to the cooking chamber.

Since the indirect water injection system has a separate steam generator, energy consumption is high and operation cost is high. Direct water injection can produce many heaters that are needed at a relatively cheap price and can reduce energy consumption and operation cost by using a single water channel to divert water to multiple heat sources. However, It is difficult to generate uniform steam for each time lag and inside compartment.

FIG. 2 is a schematic view of a direct water jet type steam oven according to an embodiment of the present invention. Referring to FIG. 2, it is possible to easily produce a required heater, It is a structure that can reduce the cost. It is a structure that reduces the steam generation time difference by the heat source position and generates uniform steam for each inner compartment.

2, the direct water jet type steam oven 100 according to the present invention includes a high-temperature cooking chamber 110 and a cabinet housing 120 through which steam flows, a steam Generating apparatus 200 shown in Fig.

The steam generator 200 includes a water valve 220 for interrupting the direct water supply from the external water source 210. The water valve 220 is disposed for each flow path of the water pipe to open and close the flow path of the water supply pipes, and the opening and closing times can be differentially controlled through the controller 260.

Water is supplied to the individual heat sources 241 disposed at different positions via at least one water pipe line 231, 232 for supplying water passing through the water side 220.

In addition, water is directly supplied from any one of the water supply lines 231 and 232, and the supplied water is made into water molecules. At the same time, the water is divided into at least one heat source 241, And a steam generating unit 240 that guides the water particles generated in the steam generating unit 240 and the water particles generated in the cooking chamber 110 to generate water, And a quenching box 250 that is integrated with the flow paths of the heat sources 220 and induces the heat sources 241 to be supplied or discarded.

2 to 4 are views showing a steam generator 240 of a direct water jet type steam oven according to an embodiment of the present invention. Referring to FIGS. 2 to 4, the water head 231, And a control unit 260 that opens and closes the opening and closing timings of the water valve 220 according to the differences h1-h2.

The opening and closing timings of the water valve 220 which can be controlled through the control unit 260 are determined differentially according to the height of the water pipes 231 and 232 and the height of the water pipes h1 and h2. The height h1 of the water supply pipe 231 for supplying water to the upper side heat source 241 under the condition that the same water pressure is applied from the raw water 210 is higher than the height h1 of the water supply pipe 232 of the lower side heat source 241, h2 '. In this case, even if power is supplied to the heat source 241 under the same time condition, since the water supply time difference is different, the time for forming the steam represents a time difference until the water finally reaches and is generated as steam. This phenomenon is an obstacle to forming a high-temperature atmosphere in the cooking chamber 110 in an even distribution and causes a failure to uniformly heat the cooked food. This is because opening and closing of the water valve 220 through the control unit 260 .

For example, it is possible to adjust the opening timing of the water valve 220 by a delay time based on the water supply delay time that may occur due to the difference in the position of the heat source 241 so that the water can contact the heat source 241 at the same timing The water supply valve 220 for controlling the upper water supply line 231 is operated earlier than the water supply valve 220 connected to the lower water supply line 232 to compensate for the water supply time difference due to the difference in height, It can be fitted with injection.

A water wall 270 is formed to prevent water particles formed in the steam generating part 240 from flowing into the cooking chamber 110. 2, the water level wall 270 is located in a space separating the steam generating unit 240 from the cooking chamber 110. The water outlet wall 270 freely moves the steam generated through the heat source 241 to the cooking chamber 110 and prevents the relatively large water particles from flowing directly into the cooking chamber 110 to be returned to the quenching box 250 do.

5 is a detailed view illustrating a steam generating unit of a direct water jet type steam oven according to an embodiment of the present invention. Referring to FIG. 5, the heat source 241 is shown as a coiled heater 242 in which a circular pipe is wound and laminated. The structure of the heat source 241 can be freely adjusted and easily manufactured at a low price as compared to other types of heat sources, and the blower 243 is disposed at the center and the surrounding periphery is heated to a heating space It is easier to install than other types of heaters while reducing heat loss.

5, the steam generating unit 240 includes a laminated coil heater 242 attached to the wall surface of the cabinet housing 120 to heat water sprayed through the water pipe lines 231 and 232, A blower 243 having a blade 244 that converts water sprayed from the water supply lines 231 and 232 into fine water molecules and evenly disperses the water molecules in a uniform distribution in the surface area of the heater 242 A driving motor 245 that rotates the blower 243 and a spray shaft 247 that transmits the driving force of the driving motor 245 to the blower 243 and has a V-shaped groove 246.

The direct water spray type steam generating unit 240 is constructed such that the water from the water supply lines 231 and 232 flows along the grooves of the spray shaft 247 having the V- And is uniformly spread and contacted to the surfaces of the plurality of laminated coil-shaped heaters 242 while being split into minute water molecules by the centrifugal force of the blower 243 having the plurality of the coiled heaters 242.

When the blower 243 rotates, a negative pressure is generated at the lower portion thereof. As a result, the fine water molecules are biased by the heater 242 at the lower end of the blower 243 and come into contact with each other. To improve this, the position of the spray shaft 247 The end face of the water pipe lines 231 and 232 can be guided to the heater 242 by a predetermined distance or more from the lower end of the blower 243 so that the end face of the water pipe lines 231 and 232 is inclined at about 45 degrees, So that the water can be accurately injected into the V-shaped groove 246 of the spray shaft 247.

As described above, according to the present invention, a sufficient amount of steam can be supplied through the arrangement of the plurality of heat sources 241, and water can be supplied to the upper and lower heat sources 241 through the control of the water level 220, Water supply delay time which may occur due to the difference in position is compensated to uniformly control the temperature distribution within the furnace.

The present invention is not limited to the embodiments but can be modified and modified without departing from the gist of the present invention. And modifications and variations are included in the technical idea of the present invention.

100: steam oven 110: cooking chamber
120: cabinet housing 200: steam generator
210: water source 220:
231.232: Water line 240: Steam generating part
241: heat source 242: heater
243: Blower 244: Blade
245: drive motor 246: V-shaped groove
247: Spray shaft 250: Quenching box
260: control unit 270:

Claims (5)

A steam generating device 200 for flowing hot steam to the cooking chamber 110 and a water inlet 220 for controlling direct water supply from the external water source 210, Wherein the steam oven (100)
At least one water supply line (231) and (232) for supplying water to the heat source (241) by supplying water passing through the water electrodes (220)
Water is directly supplied from any one of the water supply lines 231 and 232 and the supplied water is made into water molecules and at least one of the heat sources 241 is brought into contact with the at least one heat source 241 to generate steam And a steam generating part (240) for guiding the steam to the cooking chamber (110)
The spray particles formed in the steam generating part 240 and the water particles generated in the cooking chamber 110 are collected to form an integrated flow path with the flow paths of the water receiving valves 220, And a quenching box (250) for directing the water to be supplied or discarded. The method according to claim 1,
And a controller (260) for opening and closing the opening and closing timings of the water valve (220) in accordance with the height difference (h1-h2) of the water heads (231) and (232). The method according to claim 1,
The heat source (241) is a coil-shaped heater (242) in which a circular pipe is wound and laminated, and a direct water jet type steam oven. The method according to claim 1,
And a water wall (270) for preventing water particles formed in the steam generating part (240) from flowing into the interior. The method according to claim 1,
The steam generator 240 generates steam,
A laminated coil heater 242 attached to the wall surface of the cabinet housing 120 to heat the water sprayed through the water pipe lines 231 and 232; A blower 243 having a blade 244 that converts water sprayed from the water pipe lines 231 and 232 into fine water molecules and uniformly disperses the water molecules to spread uniformly the water molecules on the surface area of the heater 242 ); And a spray shaft 247 having a V-shaped groove 246 for transmitting the driving force of the driving motor 245 to the blower 243, Steam oven.

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