KR100634788B1 - Steam cooking apparatus - Google Patents

Abstract

A steam cooking device is provided to uniformly maintain temperature in a cooking chamber by symmetrically and dimensionally circulating steam inside and outside through the cooking chamber. A steam cooking device comprises a cooking chamber(10) formed with both lateral boards faced to each other; a steam generating unit disposed at the outer side of the cooking chamber; and a pair of steam supplying units disposed to be faced with the lateral boards. The steam supplying unit has a steam duct combined with the lateral board of the cooking chamber; a circulation fan installed in the steam duct; an inlet port(15) disposed at the middle of each lateral board of the cooking chamber; and an outlet port(16) disposed at the edge of the lateral board to suck steam of the cooking chamber through the middle portion of each lateral board of the cooking chamber by each circulation fan and discharge through the edge so as to symmetrically circulate the steam in the cooking chamber.

Description

Steam Cooking Apparatus

1 is a front view showing the appearance of the steam cooking apparatus according to the present invention.

Figure 2 is a perspective view showing the configuration of the steam cooking apparatus according to the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2 to show that the steam in the cooking chamber symmetrically circulates in the longitudinal direction through a plurality of inlet and outlet holes provided in both side plates of the cooking chamber.

4 is a cross-sectional view taken along the line IV-IV of FIG. 2 to show that the steam in the cooking chamber symmetrically circulates in the transverse direction through a plurality of inlet and outlet holes provided in both side plates of the cooking chamber.

FIG. 5 is a view corresponding to FIG. 3, in which the steam in the cooking chamber is symmetrically externally circulated through the intake port provided at the center of the upper plate of the cooking chamber and the plurality of outlet holes provided in both side plates of the cooking chamber.

6 is a cross-sectional view showing that the steam in the cooking chamber symmetrically circulates through a plurality of outlet holes provided in the inlet port provided in the center of the rear plate of the cooking chamber and both side plates of the cooking chamber as another embodiment of the present invention.

* Description of symbols on the main parts of the drawings *

10: cooking chamber 15: inlet hole

16: outlet 20: water supply unit

30: steam generating unit 32, 43: heater

35: steam pipe 40: steam supply unit

41: steam duct 42: circulation fan

The present invention relates to a steam cooking apparatus, and more particularly, to a steam cooking apparatus that allows the steam to circulate symmetrically and three-dimensionally through the cooking chamber to maintain a uniform temperature throughout the cooking chamber.

As a common method of cooking food, the food is put in a gas oven or an electric oven and cooked directly by heating the food, or the food is put in a steamed food container, or the food is put in a microwave using high frequency There is a way to cook.

When cooking food by heating food directly like gas oven or electric oven, food is oxidized by contact with oxygen contained in air, and the taste of food is deteriorated and it is not good for health, and when food is cooked by using steamer The food contains too much water, which reduces the food's unique taste and lengthens the cooking time.If the food is cooked by injecting a high frequency into the food, as in a microwave oven, the high frequency is not uniformly injected into the food. Not only does it become less cooked or cooked uniformly, but also the food dries and loses taste.

As an alternative to solve the shortcomings of the conventional cooking methods, there is a method of cooking by supplying superheated steam to food. When cooking food using the superheated steam, high temperature superheated steam is directly delivered to the entire surface of the food. The food does not burn or become less ripe, and the food can be cooked in a state that maintains proper moisture, making the food delicious and healthy.

As examples of the cooking apparatus for cooking food using the superheated steam, there are Japanese Patent Laid-Open Nos. 2004-162936 and 2004-205130.

The steam cooking apparatus includes a water supply device, a saturated steam generator, a superheated steam generator, and a hot air generator to cook food by supplying superheated steam to a cooking chamber in which the food is placed.

However, since the steam cooking apparatus has a structure in which steam circulates asymmetrically and non-sterically through the entire space of the cooking chamber, the temperature inside the cooking chamber is not kept uniform throughout, and thus the food is partially hot or cold. There is a disadvantage that locally burned or less ripe parts occur.

That is, the steam cooking apparatus circulates the steam inside the cooking chamber through the plurality of suction holes disposed on the rear wall of the cooking chamber and is sent back to the cooking chamber through the plurality of discharge holes disposed in the upper part of the cooking chamber. The temperature is relatively high between the center and the lower center, while in other regions the temperature is relatively low.

Therefore, the food placed in the cooking chamber is sufficiently in contact with the superheated steam at the upper part thereof, but inadequately comes into contact with the superheated steam, which is relatively unheated at both sides, the front, and the lower part of the food. When cooking over time, the upper part of the food becomes too ripe, while both sides and the lower part of the food may cause a disadvantage of being slightly less cooked.

Of course, Japanese Laid-Open Patent Publication No. 2004-162936 also discloses a structure for discharging steam from the upper side and one side of the cooking chamber to the inside of the cooking chamber, but even in such a structure, steam does not circulate symmetrically through the interior space of the cooking chamber. Therefore, there is a disadvantage in that the superheated steam is relatively insufficiently transmitted from one side and the bottom of the food.

In addition, the steam cooking apparatus has a suction port located at the rear upper side of the cooking chamber so that the steam inside the cooking chamber asymmetrically circulates, so that the cooking chamber has a local temperature difference, which makes it more difficult to uniformly cook food. You have a downside.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention is to provide a steam symmetrical and three-dimensional internal and external circulation through the cooking chamber to maintain the temperature inside the cooking chamber as a whole uniform To provide.

Steam cooking apparatus according to the present invention for achieving this object, a cooking chamber having both side plates disposed to face each other, a steam generating unit disposed on the outside of the cooking chamber, a pair disposed opposite to both side plates A steam supply unit, the steam supply unit includes a steam duct coupled to the side plate of the cooking chamber, a circulation fan installed inside the steam duct, and an inlet hole is disposed at the center of each side plate of the cooking chamber. And an outlet hole is disposed at an edge thereof so that the vapor of the cooking chamber is sucked through the central portions of both sides of the cooking chamber by the circulation fans and discharged through the edges so as to achieve a symmetrical internal circulation in the cooking chamber. It is done.

The steam generating unit includes a steam container, a heater installed inside the steam container, a steam pipe connecting the steam container and the respective steam ducts, and the steam container at the center of the upper plate or the rear plate of the cooking chamber. A communication intake port is provided so that the steam in the cooking chamber is sucked from the upper or rear center of the cooking chamber by a circulation fan in the steam duct and discharged to the steam supply units installed at both side plates of the cooking chamber to achieve symmetrical external circulation. Let it go.

The steam supply unit further includes a heater disposed around the circulation fan to heat the steam sucked into the center to discharge the superheated steam.

The cooking chamber further includes a top plate and a bottom plate, and corner portions of each side plate of the cooking chamber contacting the top plate and the bottom plate are formed in a curved surface to smoothly flow the steam in the cooking chamber.

As another aspect of the present invention, the steam cooking apparatus of the present invention includes a cooking chamber having both side plates disposed to face each other, a steam generating unit disposed at an outside of the cooking chamber, and a steam supply hole disposed opposite the side plates. The steam generating unit includes a steam container, a heater and a blowing fan installed inside the steam container, a plurality of steam pipes connecting the steam container and the steam supply ports, and a top plate of the cooking chamber or An intake port communicating with the steam container is provided at the center of the rear plate, and the steam of the cooking chamber is sucked from the upper or rear center of the cooking chamber by the blowing fan and is provided through the steam supply ports disposed on both side plates of the cooking chamber. The discharge is characterized in that the symmetrical external circulation is made.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a front view showing the appearance of the steam cooking apparatus according to the present invention, Figure 2 is a perspective view showing the configuration of the steam cooking apparatus according to the present invention.

In the steam cooking apparatus according to the present invention, an opening of the cooking chamber 10 and the cooking chamber 10 are arranged so that a predetermined space is provided between the housing 1 and the housing 1 that form the exterior. And a control panel 3 installed at an upper portion of the cooking chamber 10.

The steam cooking apparatus according to the present invention also provides a water supply unit 20, a steam generating unit 30, and a pair, which are arranged in a space between the housing 1 and the cooking chamber 10 to supply steam to the cooking chamber 10. Further provided with a steam supply unit 40.

The cooking chamber 10 includes a top plate 11, a bottom plate 12, both side plates 13, and a back plate 14 to form a predetermined volume of internal space for cooking food. Although not specifically illustrated, the cooking chamber 10 is surrounded by a heat insulating member so that heat does not escape to the outside of the cooking chamber 10.

The water supply unit 20 is installed on all of the outer side of the upper plate 11 to supply water for making steam to the steam generating unit 30, the steam generating unit 30 is the outer rear portion of the upper plate 11 It is installed to supply steam to the steam supply unit 40, a pair of steam supply unit 40 is installed in each side plate 13 to supply the steam for cooking food to the cooking chamber (10).

The water supply unit 20 is a water supply case 21, a water supply container 22 coupled to or separated by the water supply case 21 in a slide manner, and a water supply pipe connecting the water supply container 22 and the steam generating unit 30 ( It is provided with 23 to supply the water filled in the water supply container 22 to the steam generating unit 30 through the water supply pipe (23). The water supply pipe 23 is provided with a water supply control valve 24 for opening and closing the water supply pipe 23 to adjust the amount of water supplied to the steam generating unit 30.

The steam generating unit 30 includes a steam casing 31, a heater casing 32 (see FIG. 3) installed inside the steam vessel 31, and a fan casing 33 coupled to communicate with the steam vessel 31. , A blower fan 34 installed inside the fan casing 33, and a plurality of steam pipes 35 connecting the steam container 31 and each steam supply unit 40 to the heater in the steam container 31. The steam made by 32 is supplied to each steam supply unit 40 through the steam pipes (35).

Each steam supply unit 40 includes a steam duct 41 coupled to the outside of each side plate 13 of the cooking chamber 10, a circulation fan 42 installed inside the steam duct 41, and a circulation fan ( It is provided with a heater 43 arranged to surround the outer periphery of 42 (see Figs. 3 and 4), the detailed arrangement structure of the steam supply unit 40 will be described later with reference to Figs. .

A plurality of inlet holes 15 having a small size is disposed at the center of each side plate 13 of the cooking chamber 10, and a small size is formed at the outside of the inlet hole 15, that is, at the edge of each side plate 13. A plurality of outlet holes 16 are provided, and the heat exchanged with food in the cooking chamber, the temperature of which is dropped to the steam duct 41 through the center of each side plate 13 is changed into a superheated steam after each side The inner circulation is discharged back to the cooking chamber 10 along the edge of the plate (13). The plurality of outlet holes 16 are symmetrically arranged on the upper and lower portions, and the entirety and the rear portion of the plurality of inlet holes 15 formed in the central portion.

In the center of the upper plate 11 of the cooking chamber 10 is provided with an intake port 17 communicating with the fan casing 33 of the steam generating unit 30 and controlled to be opened and closed by a damper (not shown). The steam inside is sucked by the blowing fan 34 installed in the fan casing 33 and flows into the steam supply unit 40 together with the steam generated in the steam container 31, and again, the plurality of outflow holes 16. Through the symmetrical external circulation to the cooking chamber is made.

Opening and closing of the steam container 31 is controlled by the exhaust control valve 19 and an exhaust pipe 18 extending outward of the housing 1 is provided to control the damper of the intake port 17 and the exhaust pipe 18. When the blower fan 34 is operated when the valve 19 is open, steam inside the cooking chamber 10 may be discharged to the outside of the housing 1 so that the steam pressure and temperature inside the cooking chamber 10 can be adjusted during cooking. After cooking, it is possible to safely discharge the high temperature steam in the cooking chamber 10.

In addition, a cooling fan 50 is installed at the rear of the housing 1 to cool the space between the housing 1 and the cooking chamber 10, and a drain control valve 52 is provided at the water supply pipe 23 of the water supply unit 20. A drain pipe 51 which is opened and closed by and extending into the cooking chamber 10 is connected to allow the water remaining in the steam container 31 and the water supply container 21 to be drained through the cooking chamber 10 after cooking. .

3 and 4 respectively show that the steam in the cooking chamber is circulated symmetrically in the longitudinal direction and the transverse direction through a plurality of inlet and outlet holes provided in both side plates of the cooking chamber.

As shown in FIGS. 3 and 4, the steam duct 41 of the steam supply unit 40 having a circular shape has a first center line L1-L1 whose center crosses the center of the cooking chamber 10 laterally. ) And the second center line L2-L2 crossing the center of the cooking chamber 10 in the longitudinal direction are coupled to the outside of each side plate 13 of the cooking chamber 10.

The circulation fan 42 has a circular shape so that the center of the steam duct 41 coincides with the center of the steam duct 41, and the heater 43 is also formed in a circular shape so that the circulation fan 42 has a circular shape. Is placed on the outer periphery.

The circulation fan 42 is a centrifugal fan having a plurality of blades. Therefore, when the circulation fan 42 is rotated, suction force is generated in the axial direction of the circulation fan 42, and the steam and the plurality of steams in the cooking chamber 10 are generated. The steam inside the pipe 35 is sucked together and discharged in the radial direction of the circulation fan 42.

A plurality of steam pipes 35 connecting the steam container 31 of the steam generating unit 30 and the steam duct 41 of each steam supply unit 40 is formed in a pair, each of the steam pipes 35 In the steam duct 41 is connected to the position facing the plurality of inlet holes 15, that is, the position corresponding to the suction side of the circulation fan 42, the steam inside each steam pipe (35) of the circulation fan 42 The suction force is introduced into the steam duct 41 and mixed with the steam of the cooking chamber 10 introduced into the plurality of inlet holes 15.

As described above, the plurality of inlet holes 15 are formed at the center of each side plate 13 of the cooking chamber 10 to face the circulation fan 42, and the outlet hole 16 is the inlet hole 15. ) Are arranged symmetrically with respect to the first center line (L1-L1) and the second center line (L2-L2) at the top and bottom, and all and the rear of the.

3 and 4, the steam in the cooking chamber 10 is symmetrical through the pair of steam supply units 40, thereby internally circulating three-dimensionally.

In addition, a corner portion of each side plate 13 of the cooking chamber 10 which is in contact with the top plate 11 and the bottom plate 12 of the cooking chamber 10 may be formed as a curved surface having a predetermined radius of curvature R. In order to reduce the flow resistance in the turbulent flow does not occur and the flow of steam by the circulation fan 42 is made smoothly.

Here, when the radius of curvature R of the corner portion is approximately 7-15 mm, the effective flow is achieved without the flow resistance at the corner portion.

FIG. 5 is a view corresponding to FIG. 3, in which the steam in the cooking chamber is symmetrically externally circulated through the inlets provided in the center of the upper plate of the cooking chamber and a plurality of outlet holes provided in both side plates of the cooking chamber.

As shown in FIG. 5, the steam in the cooking chamber 10 is internally circulated by the circulation fans 42 provided on both sides of the cooking chamber 10, and at the same time, some steam in the cooking chamber 10 is mixed with the cooking chamber 10. Steam blown out of the cooking chamber 10 through the inlet port 17 formed in the center of the upper plate 11 of the cooking chamber 10 by the blowing fan 34 installed on the outer upper portion of the steam chamber 31 and Along with the plurality of steam pipes 35 are sent to each steam duct 41, the symmetrical external circulation is made to continue to flow to both sides of the cooking chamber 10 through a plurality of outlet holes (16). .

In this way, the steam in the cooking chamber 10 flows through the symmetrical internal circulation by the circulation fan 40 and the symmetrical external circulation by the blowing fan 34, thereby making the entire space of the cooking chamber 10 uniform and high temperature. This allows the food to be cooked quickly and evenly.

Next, a process of cooking food by the steam cooking apparatus according to the present invention configured as described above will be described.

First, when a tray (not shown) on which food is placed is put into the cooking chamber 10 and the steam cooking apparatus is operated by the operation of the control panel 3, the water of the water supply container 22 is supplied to the steam container through the water supply pipe 23. 31 to be heated by the heater 32.

The steam produced in the steam container 31 by the heat of the heater 32 is sent to the respective steam ducts 41 through the steam pipes 35 by the operation of the blower fan 34, and the circulation fan 42 and By the operation of the heater 43 is changed into a superheated steam of a higher temperature is supplied to the cooking chamber 10 through a plurality of outlet holes 16 formed in each side plate 13 of the cooking chamber 10.

At the same time, the steam inside the cooking chamber 10 introduced into the steam duct 41 through the plurality of inlet holes 15 formed in the center of each side plate 13 by the operation of the circulation fan 42 is a steam pipe ( After mixing with the steam supplied through 35) the internal circulation is switched to the superheated steam by the heater 43 is sent back to the cooking chamber (10).

As the above process proceeds, the inside of the cooking chamber 10 circulates a large amount of steam having a high pressure, and when it is necessary to adjust the pressure and the amount of steam inside the cooking chamber 10 to the blowing fan 34. In this way, the steam in the cooking chamber 10 is discharged to the outside of the housing 1 through the inlet port 17 provided at the center of the upper plate 11 of the cooking chamber 10 and the exhaust pipe 18 provided in the steam container 31. . At this time, the damper (not shown) disposed in the inlet port 17 and the exhaust control valve 19 arranged in the exhaust pipe 18 open the inlet port 17 and the exhaust pipe 18, respectively.

On the other hand, when the blower fan 34 is operated while the damper of the inlet port 17 is opened and the exhaust control valve 19 of the exhaust pipe 18 is closed, steam in the cooking chamber 10 is generated in the steam container 31. A symmetrical external circulation that flows through the steam pipes 35 through the steam pipes 35 and returns to the cooking chamber 10 is achieved.

As shown in FIGS. 3 to 5, in the internal and external circulation processes, the steam in the cooking chamber 10 is three-dimensionally symmetric with respect to the first and second center lines L1-L1 and L2-L2. By the symmetrical three-dimensional internal circulation and the external circulation, very high temperature steam is evenly transmitted to the entire surface of the food, so that the food can be cooked uniformly and quickly.

6 is a cross-sectional view showing that the steam in the cooking chamber symmetrically circulates through a plurality of outlet holes provided in the inlet port provided in the center of the rear plate of the cooking chamber and both side plates of the cooking chamber as another embodiment of the present invention.

As shown in FIG. 6, the inlet 17 may be disposed in the center of the rear plate 11 instead of being disposed in the center of the top plate 11 as shown in FIG. 1 or 5. It is possible to circulate the steam symmetrically.

That is, when the water supply unit 20 and the steam generating unit 30 is installed outside the rear portion of the cooking chamber 10, and the inlet port 17 communicating with the steam container 31 is disposed at the center of the rear plate 11. The steam in the cooking chamber 10 is mixed with the steam made in the steam container 31 at the rear of the cooking chamber 10 by the blower fan 34, and then the steam installed outside the side surface of the cooking chamber 10 through the steam pipes 35. A symmetrical external circulation that flows to the supply unit 40 and returns to the cooking chamber 10 is achieved.

As described above in detail, in the steam cooking apparatus according to the present invention, a pair of steam supply units for supplying steam to the cooking chamber are respectively installed at the center of each side plate of the cooking chamber, and an intake port of the upper plate or the rear plate of the cooking chamber is provided. It is located in the center, and the steam is symmetrical and three-dimensional internal circulation and external circulation, so that the inside of the cooking chamber can be maintained at a uniform and high temperature as a whole, so that the food placed in the cooking chamber can be cooked quickly and uniformly as a whole. It is effective to make delicious and healthy food quickly.

Claims (5)

A cooking chamber having both side plates disposed to face each other, a steam generating unit disposed outside the cooking chamber, a pair of steam supply units disposed opposite the side plates, The steam supply unit includes a steam duct coupled to the side plate of the cooking chamber, a circulation fan installed inside the steam duct, and an inlet hole is disposed at the center of each side plate of the cooking chamber, and an outlet hole is disposed at an edge thereof. The steam cooking apparatus according to claim 1, wherein the steam of the cooking chamber is sucked through the centers of both sides of the cooking chamber by the circulation fans and discharged through the edges to achieve a symmetrical internal circulation in the cooking chamber. The steam generating unit of claim 1, wherein the steam generating unit includes a steam container, a heater installed inside the steam container, a steam pipe connecting the steam container and the respective steam ducts, and the upper plate or the rear plate of the cooking chamber. In the center is provided an intake port communicating with the steam container, the steam of the cooking chamber is sucked from the upper or rear center of the cooking chamber by the circulation fan in the steam duct is discharged to the steam supply unit installed on both side plates of the cooking chamber Steam cooking apparatus characterized in that the symmetrical external circulation is made. The steam cooking apparatus according to claim 1, wherein the steam supply unit further comprises a heater disposed around the circulation fan to heat the steam sucked into the center to discharge the superheated steam. According to claim 1, wherein the cooking chamber further comprises a top plate and a bottom plate, the corner portion of each side plate of the cooking chamber abuts the top plate and the bottom plate is formed in a curved surface smoothly the flow of steam in the cooking chamber Steam cooking apparatus, characterized in that made. A cooking chamber having both side plates disposed to face each other, a steam generating unit disposed outside the cooking chamber, and a steam supply port disposed opposite the side plates, wherein the steam generating unit includes a steam container and the steam; It is provided with a heater and a blowing fan installed inside the container, and a plurality of steam pipes connecting the steam container and each steam supply port, and an intake port communicating with the steam container is located at the center of the upper plate or the rear plate of the cooking chamber. It is provided, the steam of the cooking chamber is sucked from the center of the upper or rear portion of the cooking chamber by the blowing fan is discharged through the steam supply ports disposed on both side plates of the cooking chamber to achieve a symmetrical external circulation Steam cooker.

Images