KR101489333B1 - Draining and exhaust cooling system of combination steam oven and control method - Google Patents

Abstract

The present invention relates to a draining, exhausting, and a cooling system of a steam convection oven to cool exhausting heat to be exhausted from a drain by forming a water-film during cooking in the steam convection oven, and to reduce the flow rate usage of cooling water. The present invention comprises: a faucet side (210); a steam generating apparatus (200); a steam generation unit (300) to supply steam to an oven cavity; a quenching box (400) to cool and discharge an exhaust flow path (140) inducing steam and moisture to the drain within the oven cavity, and flowing fluid flowing along the exhaust flow path (140); and a nozzle (600) forming the water-film by dispersing the cooling water to be supplied through a cooling water supply pipe. The present invention is to provide the steam convection oven of the improved cooling performance with only a least amount of cooling water by forming the direct water-film with respect to an outflow fluid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam convection oven,

The present invention relates to a device for cooling and discharging exhaust gas of a steam convection oven for cooling the exhaust heat discharged from a drain port during food cooking through a steam convection oven by forming a water film and reducing the amount of cooling water used.

The steam convection oven is a cooking device that generates steam and cooks various kinds of food such as steam and steam. A steam generating device for generating steam is formed around the cooking chamber. The steam generating device supplies water to the inside of the cooking chamber The water in the rear tank is heated, or the water is sprayed directly onto the heater, and the steam is supplied to the cooking chamber to cook the food.

In addition, a heater and a convection fan are installed in the cooking chamber of the steam convection oven to heat the steam supplied from the steam generator or spray the water in the direct water line to the heater so that the steam generated is supplied to the inside of the oven, And the method of forming or generating steam is known in various ways. Korean Patent Application No. 10-2011-0091351 discloses a steam convection oven in which a steam generating device is dispersed.

A steam convection 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, It is known that it can be reduced compared with the operation.

FIG. 1 is a schematic view showing an example of a conventional steam convection oven to which a direct water injection method is applied. 1, a conventional steam convection oven to which a direct water spraying method is applied comprises a cabinet housing 12 constituting a cooking chamber 11 formed of an oven cavity therein, and a steam generating device 12 for providing steam to the cooking chamber 11. [ (20).

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 operating switches and notifications is disposed on the door 13, And a convection fan (not shown) for circulating the air inside the cooking chamber 11 and discharging cooling water b for recovering and cooling the flowing fluid including the oven cavity steam and moisture, A shaking box 40 having a drain 15 and an open pipe 42 for selectively discharging the fluid is constructed.

The steam generator 20 includes a water column 21 for interrupting the direct water supplied from an external water source such as a water supply or the like to a water supply pipe 30 for supplying direct water passing through the water column 21 to the side of the steam generating unit 30 22 and a steam generating part 30. The steam generator 30 has a heater 31 installed in the cabinet housing 12 to heat water sprayed through the water supply line 22 and a blade for spreading and scattering water sprayed from the water supply line 22 A blower 32, a drive motor 33 for transmitting power to the blower 32, and a shaft 34 for transmitting a rotational force to the blower 32.

Meanwhile, as shown in FIGS. 1 and 2, the steam convection oven has a structure in which the oven cavity of the cooking chamber and the high-temperature steam discharged from the periphery of the cooking chamber are cooled by the cooling box 40 do. In the related art, the technology described in Korean Patent Application No. 10-2010-0104361 integrates the moisture generated in the cooking chamber and the door of the steam convection oven to induce an environmentally-friendly lower discharge, and water and odor flow back into the cooking chamber It is proposed that the inside of the cooking chamber is prevented from being contaminated or deteriorated and the exhaust temperature of the steam is lowered to prevent safety accidents and to reduce the amount of exhausted steam to increase the cooking efficiency.

However, in the conventional steam convection oven, the steam exhaust and the water discharge cooling system are constructed such that the oven cavity and the flow fluid such as the exhaust steam and moisture generated in the peripheral portion flow through the discharge passage 14 to the cooling water supply pipe A large amount of cooling water b is sprayed into the discharge passage 14 through the discharge port 23 to discharge the exhaust temperature from the jacket 41 of the shaking box 40 to the drain port 15, There are too many problems with quantity.

In the conventional steam convection oven, the cooling water injection structure that is structurally supplied to the cooling water tank or the discharge passage 14 is injected vertically and horizontally, and thus the exhaust heat is brought into contact with only a part of the passage of the discharge passage 14, There is a problem that the cooling effect is inferior to that in the amount.

Also, in the exhaust control of the conventional steam convection oven, there is a problem that the cooling water is unnecessarily discharged by selecting only one of the exhaust temperature and the time control.

Therefore, it is required to increase the cooling efficiency by using less cooling water in the cooling fluid discharge of the steam convection oven, and to reduce unnecessary cooling water discharge by reducing the use of cooling water. In addition, environmentally friendly flow fluid cooling discharge, including user safety by contact with hot fluid flow, is also required.

Patent Document 1. Korean Patent Application No. 10-2011-0091351

Patent Document 2: Korean Patent Application No. 10-2010-0104361

An object of the present invention is to provide a drainage and exhaust cooling device for a high performance steam convection oven which forms a water film in a drainage exhaust flow fluid cooling and discharging operation to improve cooling efficiency by using less cooling water.

Another object of the present invention is to reduce the use of cooling water injected for cooling and discharging the exhaust flow fluid of the steam convection oven, thereby suppressing unnecessary cooling water discharge.

It is a further object of the present invention to provide a drainage and exhaust cooling device for a steam convection oven that guides the user to environmentally friendly fluid discharge including user safety due to high temperature fluid contact with the drainage and high temperature fluid of the steam convection oven.

In the drainage and exhaust cooling system of the steam convection oven according to the embodiment of the present invention,

A water supply passage connecting the water supply source to the water supply source, the water supply passage injecting water required in the steam generating portion through the selective opening of the valve, and the water supply pipe connecting the cooling water supply pipe to supply the cooling water; A steam generator for generating steam in the cooking chamber, the steam generator being supplied with direct water through a water line; A steam generator included in the steam generator and supplied with external direct water to generate steam to supply steam to the cooking oven cavity; A discharge box for discharging steam and moisture in the oven cavity to a discharge port, and a flow box for cooling and discharging the flow fluid flowing along the discharge passage; And a nozzle installed on the cooling water supply pipe and scattering cooling water supplied through the cooling water supply pipe to the discharge passage to form a water film on the discharge passage.
Preferably, the present invention further includes: a control unit for controlling the water column; And a thermistor provided in the discharge passage for transmitting temperature detection information to the control unit.

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Preferably, the present invention is characterized in that the nozzle is bent in the direction from the vertical end of the cooling water supply pipe toward the jacket of the shaking box parallel to the discharge flow path.

Preferably, the present invention is characterized in that a part of the nozzle is constituted by an engaging part which is engaged with the cooling water supply pipe, and the other part is constituted by a spraying part for spraying cooling water to the flowing fluid including the exhaust heat flowing along the discharge path, Head.

Preferably, the present invention includes a jetting port for separating the effective jetting region and the non-jetting region, from which the jetting head ejects the cooling water.

Preferably, the present invention is such that one of the nozzles is clogged with a wall to expand the surface area of the instantaneous contact water film of the cooling water with respect to the flowing fluid flowing through the discharge passage.

Preferably, in the present invention, the effective injection area of the injection port occupies 70 to 95% of the discharge flow passage.

In another aspect of the present invention, there is provided a method for controlling drainage and exhaust cooling of a steam convection oven that cools and discharges steam or generated moisture in an oven cavity,

A step of detecting the temperature of the discharge passage or the drain port through the control part to find the temperature of the fluid containing steam or water to be discharged; A second step of comparing a temperature set value of a previously input control unit with a value detected from the step; A third step of determining whether or not to open a water supply valve for supplying water from the water source according to the comparison result; Supplying the cooling water to the discharge passage according to the result determined through the step and comparing the supply time with the set time inputted to the control part; If the set time period is within the set time range of the above-described four steps, the cooling water supply valve is repeatedly closed. If the set time is exceeded, the drain and exhaust temperatures are detected by the thermistor and the exhaust temperature is checked. And a fifth step of feeding back the water-side valve opening determination information to the water-state valve opening determination information in step 3, which is to close the water-side cooling water supply valve when the water- Method.

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The present invention provides a drainage and exhaust cooling apparatus for a high performance steam convection oven which forms a water film in a drainage exhaust flow fluid cooling discharge to increase cooling efficiency by using less cooling water.

Also, it is possible to reduce unnecessary cooling water discharge by reducing the amount of cooling water used for cooling / discharging the exhaust flow fluid of the steam convection oven, thereby economically operating the steam convection oven.

The present invention also provides a high reliability steam convection oven in which safety of users is ensured by the contact with the drain and exhaust high-temperature fluid in the operation of the steam convection oven and the environmentally-friendly discharge of the fluid is carried out at an appropriate temperature.

1 is a schematic view of the construction of a drainage and exhaust system of a conventional steam convection oven.
FIG. 2 is a detailed view of the flushing box and drainage fluid flow of FIG. 1;
3 is a schematic view of the construction of a drainage and exhaust system of a steam convection oven according to an embodiment of the present invention.
FIG. 4 is a detailed view of the flushing box and drainage fluid flow of FIG. 3;
5 is a nozzle according to an embodiment of the present invention.
FIG. 6 is an explanatory view of a jetting area classification of a cooling water jetting nozzle according to an embodiment of the present invention; FIG.
FIG. 7 is a flowchart of a method for controlling drainage and exhaust of a steam convection oven according to an embodiment of the present invention. FIG.

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

The apparatus for cooling and discharging exhaust gas of the steam convection oven according to the embodiment of the present invention is shown in FIGS.

3 is a schematic view showing a drainage and exhaust cooling apparatus of a steam convection oven according to an embodiment of the present invention. 1, a steam convection oven 100 to which a direct water spraying method is applied comprises a cabinet housing 120 constituting a cooking chamber 110 and a steam generator 200 for providing steam to the cooking chamber 110 .

A door 130 for opening and closing the cooking chamber 110 is coupled to the front of the cabinet housing 120 and an operation unit provided with a display device for informing an operation switch and a notification is disposed on the door 130. And a convection fan for circulating the air in the cooking chamber 110. A discharge channel 140 for collecting and cooling the water in the cooking chamber 110 and a drain 150 for selectively discharging the fluid and an open pipe 420 A box 400 is constructed.

The steam generator 200 includes a water column 210 for interrupting the direct water supplied from an external water source such as a water supply or the like, a water supply pipe 220 for supplying water directing through the water column 210 to the steam generating unit 300 And a steam generator 300. The steam generating unit 300 includes a heater 310 installed in the cabinet housing 120 to heat water sprayed through the water supply pipe 220 and a blade for spreading and scattering water sprayed from the water supply pipe 220 A driving motor 330 for transmitting power to the blower 320, and a shaft 340 for transmitting a rotational force to the blower 320. [ A thermostat 500 for adjusting the steam temperature and a thermistor 510 for measuring the steam temperature by electrical resistance are installed in the periphery of the steam generating part 300. The thermistor 510 is connected to the cooling water b And is also installed in the discharge passage 140 around the periphery of the cooling water supply pipe 230 to be supplied.

FIG. 4 is a detailed view of a flushing box of a steam convection oven according to an embodiment of the present invention and a flushing flow flow in the flushing box.

The main part constituting the present invention is a water supply pipe (220) for injecting the water required in the steam generating part through the selective opening of the valve and a water cooling water supply pipe (230) for supplying the cooling water A steam generating device 200 including an electronic valve 210 and a water electronic valve 210 receiving direct water through a water pipe 220 and generating steam in the cooking chamber 110; A steam generating part 300 for supplying steam to the oven cavity of the cooking cavity by generating heat by applying direct water to generate steam, a discharge passage 140 for leading steam and moisture in the oven cavity to the drain hole, And a cooling box 400 for cooling and discharging the flowing fluid flowing along the flow path.

And a nozzle 600 for dispersing the cooling water supplied through the cooling water supply pipe 230 to form a water film.

(Not shown) for controlling the water valve 210 and a thermistor 520 installed in the discharge passage 140 to transmit temperature detection information to the control unit.

FIG. 5 is a perspective view illustrating a cooling water nozzle 600 forming a water film in the exhaust / exhaust flow fluid of the steam convection oven according to the embodiment of the present invention.

The nozzle 600 is preferably bent in a direction from the vertical end of the cooling water supply pipe 230 toward the jacket 410 of the shaking box 400 in parallel with the discharge passage 140. This installation direction is a direction perpendicular to the discharge progressing direction of the fluidizing cure and forming a water curtain by spraying the cooling water b. That is, the direction in which the cooling water b can be injected in the longitudinal direction with respect to the transverse flow fluid c flowing along the discharge passage 140.

A part of the nozzle 600 is constituted by a coupling part 620 to be coupled with the cooling water supply pipe 230 and the other part of the nozzle 600 injects cooling water into the flow fluid including the exhaust heat flowing along the discharge flow path 140, (Not shown).

FIG. 6 is an explanatory diagram of a mounting state of a cooling water nozzle 600 for forming a water film in a drainage exhaust flow fluid of a steam convection oven according to an embodiment of the present invention.

The ejection head 610 of the nozzle 600 includes an effective ejection region a1 for ejecting cooling water, that is, an ejection port 630 for distinguishing the non-ejection region a2 from the effective ejection region a1 a1) through the cooling water supply pipe 230 to the predetermined region through the cooling water supply pipe 230. The cooling water supply pipe 230,

One side of the nozzle 600 is blocked by the wall 640 in order to control the unnecessary radiation of the cooling water, so that the surface area of the instantaneous contact water film of the cooling water with respect to the flowing fluid flowing through the discharge channel 140 greatly expands. The effective injection area a1 of the injection port 630 may be in a range occupying approximately 70 to 95% with respect to the discharge flow passage 140. [

If the effective injection occupation area for the discharge flow path 140 is too wide, the expansion of the scattering range of the cooling water may lower the pressure of the water of the cooling water to lower the cooling efficiency for the fluid. If the occupied area is too low, The efficiency is improved, but the scattering region is reduced, so that even and uniform contact with the fluidized fluid particles can not be performed, and the cooling efficiency may be lowered. Therefore, it is preferable that the effective injection area of the nozzle occupies 70 to 95% of the discharge passage 140.

An example of a control method of the drainage and exhaust cooling apparatus of the steam convection oven according to the embodiment of the present invention is shown in FIG.

FIG. 7 is a flowchart illustrating a method of controlling the drainage and exhaust of a steam convection oven according to an embodiment of the present invention. FIG. 7 is a flowchart illustrating a method of cooling drainage and exhausted fluid in a steam convection oven for cooling steam produced in the oven cavity or generating moisture.

The control method includes detecting the temperature of the drainage passage 140 or the drainage port 150 through the control unit in order to determine the temperature of the fluid containing the steam or moisture to be discharged first (S110) And compares the detected value with the detected value (S120).

In accordance with the comparison result, it is determined whether or not the water supply valve of the water valve 210 for supplying direct water from the water source is opened (S130).

The cooling water supply valve of the water level valve 210 is opened to supply the cooling water b to the discharge flow path 140 through the cooling water supply pipe 230 at step S140, (S150).

If the result of the comparison is within the set time range, the closing of the water coolant supply valve is repeatedly executed (S160). If the set time is exceeded, it is checked whether the drain and exhaust temperatures are exhausted from the thermistor 510 and the exhaust temperature and whether the temperature is higher than the reference temperature (S180). As a result of checking, if the temperature is higher than the reference temperature, the water valve is maintained in the open state, and if the temperature is lower than the reference temperature, the water valve is closed. In this way, the comparison result is compared with the reference temperature, and the comparison result is fed back to the determination information on whether the valve is opened to close the solenoid valve, so that the cooling water is continuously supplied or the cooling water supply valve is closed.

Therefore, when the inside temperature of the discharge port exhaust passage reaches the set temperature during the oven cooking, the operation of the chilled water water electronic valve can be controlled to easily manage the cooling water. During the oven cooking, the drain water cooling water is repeatedly opened and closed for a predetermined time through the nozzle to systematically manage the supply of the continuous and continuously supplied cooling water. Also, by checking the drainage and exhaust temperature intermittently during the cooking of the oven, cooling water injection can be controlled in real time, thus reducing the waste of cooling water.

As described above, according to the drainage and exhaust cooling apparatus and control method of the steam convection oven of the present invention, the drainage and exhaust heat discharged from the drain port during the cooking using the steam convection oven are effectively cooled and the flow rate of the cooling water is reduced through the modification of the water injection nozzle structure . In addition, a water film is formed in the discharge passage to effectively cool drainage and exhaust heat, and to minimize unnecessary cooling water discharge during cooking.

In addition, a water film is formed in the range of about 70 to 95% of the discharge passage through the cooling water spray nozzle to effectively cool the drainage and exhaust heat, thereby economically saving safety and cooling water input.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, .

100: steam convection oven 110: cooking chamber
140: exhaust flow passage 200: steam generating device
210: water side 220: water pipe
230: Cooling water supply pipe 300: Steam generating part
400:? Ching Box 410: Jacket
520: thermistor 600: nozzle
610: jet head 620:
630: jetting port 640: wall

Claims (8)

A water supply passage 210 connecting the water supply source for external direct water to the water supply pipe 220 for spraying the water required in the steam generating unit through the selective opening of the valve and the water supply pipe 210 for connecting the cooling water supply pipe 230 for supplying the cooling water; A steam generating device (200) including the water valve (210) that receives direct water through a water pipe (220) and generates steam in the cooking chamber (110); A steam generator 300 included in the steam generator 200 and supplied with external direct water to generate steam to generate steam to supply steam to the cooking cavity oven cavity; A discharge box 140 for discharging steam and moisture in the oven cavity to a drain port and a flow box 140 for cooling and discharging the flow fluid flowing along the discharge passage 140; And a nozzle 600 installed in the cooling water supply pipe 230 and scattering the cooling water supplied through the cooling water supply pipe 230 to the discharge passage 140 to form a water film on the discharge passage 140 Of the steam convection oven. The method according to claim 1,
A control unit for controlling the water valve 210; And a thermistor (520) installed in the discharge passage (140) for transmitting temperature detection information to the control unit. The method according to claim 1,
Wherein the nozzle 600 is bent in a direction from the vertical end of the cooling water supply pipe 230 toward the jacket 410 of the box 400 parallel to the discharge passage 140. The method according to claim 1,
A part of the nozzle 600 is connected to the cooling water supply pipe 230 and the other part is configured to inject cooling water into the flowing fluid including the exhaust heat flowing along the discharge path 140 And a spray head (610) for contacting the spray head (610). 5. The method of claim 4,
The spray head cooling apparatus of claim 1, wherein the spray head (610) includes an effective spray area (a1: f1 to f5) for spraying cooling water and a spray hole (630) for partitioning the non-spray area (a2). The method according to claim 1 or 4,
Wherein one of the nozzles (600) is clogged by a wall (640) to expand the surface area of the instantaneous contact water film of the cooling water with respect to the flowing fluid flowing through the discharge channel (140). 6. The method of claim 5,
Wherein the effective injection area a1 of the injection port 630 occupies 70 to 95% of the discharge flow passage 140. [ A method for controlling the temperature of a discharge passage or a drain port through a control unit to detect a temperature of a flow fluid containing steam or moisture to be discharged, step; A second step of comparing a temperature set value of a previously input control unit with a value detected from the step; A third step of determining whether or not to open a water supply valve for supplying water from the water source according to the comparison result; Supplying the cooling water to the discharge passage according to the result determined through the step and comparing the supply time with the set time inputted to the control part; If the set time period is within the set time range of the above-described four steps, the cooling water supply valve is repeatedly closed. If the set time is exceeded, the drain and exhaust temperatures are detected by the thermistor and the exhaust temperature is checked. And a fifth step of feeding back the water-side valve opening determination information to the water-state valve opening determination information in step 3, which is to close the water-side cooling water supply valve when the water- Way.

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