KR102072694B1 - A combi oven including the heat exchange module - Google Patents

Abstract

The present invention relates to a combination oven comprising a heat exchange module. More specifically, the present invention relates to a combination oven comprising a heat exchange module, capable of recycling waste heat through heat exchange from high temperature hot air and liquid introduced into a drainage device.

Description

A combi oven including the heat exchange module

The present invention relates to a combination oven comprising a heat exchange module, and more particularly, to a combination oven including a heat exchange module for recycling the waste heat through heat exchange from the hot hot air and liquid introduced into the drainage.

Convection function to produce food using heat sources such as electricity and gas, and to cook food using heat convection, which sends the air warmed by the heat to the whole cooking room as the fan spins, and the heat generated by heating the water. The combination oven including all the steam functions for cooking food using steam makes it possible to cook various foods simply and deliciously.

In the case of a common combination oven, hot heat or water generated in the cooking chamber during food cooking is introduced into the drainage through the cooking chamber drain, and they have a cycle of being discharged to the outside through the exhaust pipe. However, in this manner, since the internal temperature of the drainage module is increased by the high temperature heat introduced therein, this may cause a problem that may act as a main cause of deterioration of the durability of the apparatus.

In addition, when cooking food using the steam function, the steam generator is supplied with cold water through the tap water to generate steam by using a heater or a separate heating device provided in the oven so that the food can be cooked. However, this method has a problem in that a lot of energy is consumed because the cold cold water must be raised to a high temperature to generate steam.

(Patent Document 1) KR10-1975543 B1

The present invention has been made in view of the above-mentioned problems, and specifically, to provide a combination oven including a heat exchange module for supplying hot water to a steam generator by recycling high temperature heat generated during food cooking through heat exchange.

Combi oven according to the invention, the inner housing including a cooking chamber, a heating module and a drain; A drainage module connected to the drainage port and disposed below the inner housing to discharge hot hot air and a liquid substance generated inside the cooking chamber to the outside; A steam supply module provided outside the inner housing and supplying steam into the cooking chamber; It is configured to include, The drainage module, Heat exchange module for recovering heat through heat exchange from the hot air and liquid material of the high temperature generated in the cooking chamber; It characterized in that it comprises.

Specifically, the cooking chamber is formed of a space in which food is placed, the food is cooked by using the heat supplied by the heating module and steam supplied by the steam supply module, the heating module, a heat source for generating heat and And an internal circulation fan for supplying heat generated from the heat source into the cooking chamber through a rotation operation, wherein the drain hole is formed on the bottom surface of the cooking chamber, and the hot air and liquid substance generated inside the cooking chamber are drainage modules. Characterized in that the discharge to the inside.

On the other hand, the drain module, is connected to the drain, the hot tub and the hot water in the cooking chamber introduced through the drain is accommodated in the drain; A heat exchange module provided in an upper region of the sump, connected to a supply pipe connected to the steam supply module, and connected to a direct pipe connected to an external straight line; It is configured to include, the sump, the main opening is formed on the bottom surface to allow the liquid material contained in the sump to be discharged to the outside and the upper surface of the sump is formed to discharge the gas in the sump out It characterized in that it comprises an exhaust opening to make.

The drain module may include: a main drain pipe connected to the main opening and discharging the liquid substance contained in the drain container to the outside; One end is connected to the sump, the other end is connected in a vertical direction to the main drain pipe, the overflow drain for discharging the liquid material filled to a predetermined height or more inside the sump through the main drain pipe to the outside; And an external exhaust pipe formed to extend upwardly of the drain container so as to be connected to the exhaust opening, and to discharge the gas in the drain container to the outside. It is configured to include, wherein the overflow drain portion, characterized in that the liquid material contained in the drain container is discharged to the outside as much as a predetermined height exceeds.

On the other hand, the heat exchange module is configured to include a structure having a heat exchange path having a supply port and a discharge port, the supply port is connected to the straight pipe, the discharge port is connected to the supply pipe, the heat exchange between the discharge port and the supply port The structure converts the cold water supplied through the direct pipe into hot water by using heat recovered from the high temperature hot air and the liquid material introduced through the drain hole through heat exchange, and supplies it to the steam supply module through the supply pipe. It is characterized by.

Thus, the steam supply module is characterized in that for generating steam from the hot water supplied through the supply pipe by the heat exchange module to supply into the cooking chamber.

On the other hand, the heat exchange structure is formed of a sheet metal material welded by forming a predetermined interval and the path or a tube having a predetermined diameter and has a bent shape with a bent portion at a predetermined interval, etc., sufficient heat exchange path required for heat exchange It characterized in that to form.

On the other hand, the main drain pipe, the drain valve for opening and closing the discharge flow; Is provided, the main drain pipe, characterized in that it comprises a first drain pipe connected to the inlet of the drain valve, and a second drain pipe connected to the outlet of the drain valve.

In addition, the overflow drain, characterized in that connected to the second drain pipe of the main drain pipe.

The present invention can supply hot water to the steam generator by recycling the high temperature heat generated during food cooking through heat exchange, it is possible to minimize the energy consumed when heating the cold water in the steam generator.

In addition, since the temperature of the drainage module is lowered by the heat exchange, it is possible to improve the durability of the appliance.

In addition, since the low-temperature water is discharged to the outside by the heat exchange, when the high-temperature water is discharged, it is possible to minimize the energy of the cooling device required to cool it, thereby reducing the cost and energy source.

1 is a side view of a combination oven according to the present invention.
Figure 2 is a schematic view showing a state from above of the heat exchange module of the present invention.
Figure 3 is a view schematically showing a side view of the drainage module having a heat exchange module of the present invention.
Figure 4 is a view showing an embodiment that can increase the heat exchange efficiency.
5 is a view showing another embodiment that can increase the heat exchange efficiency.
6 is a view showing another embodiment to increase the heat exchange efficiency.
7 is a view showing the flow of the heat exchange operation of the combination oven according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may be referred to as the first component. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, it means that it may further include other components, except to exclude other components unless otherwise stated. As used throughout this specification, the term “step of” or “step of” does not mean “step for”.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies, and the like. In addition, in certain cases, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the general contents of the present invention, rather than simply the names of the terms.

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

1. Structure of combination oven according to the present invention

Referring to FIG. 1, the combination oven 10 according to an exemplary embodiment of the present invention may include an outer housing (not shown) forming an exterior and an inner housing provided in the outer housing (not shown) to form a cooking chamber 110. 100, a drain module 200 provided below the inner housing 100, and a steam supply module 300 provided outside the inner housing 100 to be accommodated in the outer housing (not shown). do.

1.1. Inner housing (100)

The inner housing is composed of a cooking chamber 110, a heating module 120, and a drain port 130.

end. Cooking Room (110)

The cooking chamber is a space in which food is cooked substantially, using heat supplied by the heating module 120 provided in one side space of the cooking chamber and steam supplied by the steam supply module 300 provided in the outer space of the inner housing. The food is located inside the cooking chamber.

I. Heating module (120)

The heating module includes a heat source 122 that generates heat, an internal circulation fan 124, and an internal circulation fan 124, which transfer heat generated by the heat source 122 to the inside of the cooking chamber 110 through a rotation operation. It comprises a drive motor (not shown) to drive.

Here, the heat source 122 may be a burner that burns gas to provide heat, and may be an electric heater that generates heat by using a coil that generates heat by an applied current. In addition, the heat source 122 may provide heat. Any element is possible.

The heat generated from the heat source 122 flows through the air by the rotation operation of the internal circulation fan 124, for example, a through hole drilled in a partition wall formed between the cooking chamber 110 and the heating module 120. It may move into the cooking chamber 110 through the sphere.

As described above, the food is cooked while the steam supplied by the steam supply module 300 is circulated by the high temperature hot air introduced into the cooking chamber 110 by the heating module and the internal circulation fan 124.

All. Drainer 130

The drainage port is formed at the bottom of the cooking chamber 110 and contains a high temperature droplet generated by the steam supply module 300 falling to the bottom during the cooking of food and a liquid substance such as a cooking liquid, etc. in the drainage module 200. It is configured to be discharged to.

At this time, as described above, when cooking the food, the inside of the cooking chamber 110 is a state in which hot hot air is circulated by the heating module 120, and is generated from foods that are water droplets or cooked by the steam supply module 300. A high temperature liquid substance including a cooking liquid or the like is generated and falls to the bottom of the cooking chamber 110.

Accordingly, the drain port 130 is formed on the bottom surface of the cooking chamber 110 to discharge hot air and a high temperature liquid substance inside the cooking chamber 110.

1.2. Drainage module (200)

The drainage module is provided below the inner housing 100 and has a structure connected to the drain port 130 of the cooking chamber 110 to drain the high temperature liquid in the cooking chamber 110 to the outside, and to supply the high temperature and high pressure gas in the cooking chamber. It is a configuration to discharge the outside.

Such a drainage module is comprised including the following structures.

end. Drainpipe (210)

The drain box is connected to the drain port 130 through an inlet port, and is configured to accommodate high temperature hot air, liquid, and the like in the cooking chamber 110 introduced through the drain port 130. The drain box is connected to the main drain pipe 230 and the overflow drain 240, which will be described later, so that the liquid or foreign matter contained therein is discharged to the outside, and is connected to the external exhaust pipe 250, which will be described later, to allow the gas inside. Is made to the structure to be released to the outside.

I. Heat exchanger module (220)

Referring to FIG. 2, the heat exchange module is provided in an upper region of the sump 210, and has a heat exchange structure 220a in which a heat exchange action for recovering heat from a hot hot air and a liquid substance introduced into the sump 210 is performed. ), A discharge port 220b connected to a supply pipe 222 leading to the steam supply module 300, and a supply port 220c connected to a water pipe 400 connected to an external water line.

In one embodiment, the heat exchange structure 220a is a sheet metal material welded by forming a predetermined interval and a path. Specifically, the heat exchange structure 220a forms a partition to form a partition wall using a plate made of a metal material to form a bent portion A. It can be configured by placing and welding in zigzag at predetermined intervals.

On the other hand, as another embodiment of the heat exchange structure (220a), as a tube shape having a predetermined diameter, may be configured to have a bent shape with a bent portion (A) at a predetermined interval.

The heat exchange structure 220a having such a structure may form a predetermined heat exchange path necessary for heat exchange, and may exchange cold water into hot water by heat-exchanging from hot hot air and a liquid substance flowing from the cooking chamber 110 through the path. have.

Here, as an embodiment of increasing the heat exchange efficiency of the heat exchange pipe 220a, the heat exchange efficiency may be increased by increasing the heat transfer cross-sectional area. For example, referring to FIGS. 4A and 4B, like the heat exchange structure 200a of (b), the width between the metal plate and the metal plate constituting the heat exchange structure 220a of (a) While having a width L2 that is smaller than the length L1, the curved portion A may be formed at a predetermined interval and bent. In this case, a hot hot air and a liquid material inside the drain container 210 may be formed. Since the heat transfer area between the and the increase, the heat exchange action from the hot air and the liquid material of the high temperature in the heat exchange structure (200a) is made more effective, it is possible to increase the heat transfer efficiency.

In another embodiment, an auxiliary means having a heat transfer function may be further configured to be adjacent to a circumference or a peripheral portion of the heat exchange structure 220a to increase heat exchange efficiency. For example, as illustrated in FIG. 5, the heat exchange structure 220a may be surrounded by a radiator B, or the radiator B may be disposed adjacent to the periphery thereof. 220a) may allow for more efficient heat recovery from hot air and liquid materials.

As another example, the heat exchange efficiency may be increased by changing the mounting position of the heat exchange module 220. For example, as shown in FIG. 6A, when the heat exchange module 220 is mounted on the upper region of the drain container 210, the heat exchange module 220 is sealed between the drain container 210 and the heat exchange module 220. The heat exchange structure 220a of the heat exchange module 220 may be configured to recover heat transferred through the metal plate by disposing a plate made of a metal having high thermal conductivity therebetween.

On the contrary, if the heat exchange module 220 is mounted inside the drain container 210 as shown in FIG. 6B, the heat exchange structure 220a has a cross-sectional area with hot air and hot liquid inside the drain container 210. Also, since the heat exchange structure 220a directly recovers heat without passing through a separate metal plate between the sump 210 and the heat exchange module 220, the sump 210 as shown in (a). Compared with the structure mounted on the top, it is possible to increase the heat exchange efficiency.

However, the present invention is not limited thereto, and may be variously changed to a form capable of increasing heat exchange efficiency of the heat exchange structure 220a.

The hot water (cold water) is supplied to the heat exchange structure 220a through the supply port 220c, and flows in the direction of the arrow shown in FIG. By performing heat exchange to recover heat from the substance, the temperature of the direct water flowing inside the heat exchange structure 220a is converted to hot water while being raised by the recovered heat, and is discharged to the discharge port 220b formed at the end of the heat exchange structure 220a. . Hot water discharged from the discharge port 220b is supplied to the steam supply module 300 through a supply pipe 222 connected to the discharge port 220b.

That is, the arrow shown in FIG. 2 is a path through which the high temperature hot air and the heat exchange between the liquid substance and the heat exchange structure 220a are performed in the drain container 210, and the direct water supplied from the straight pipe 400 through this path is obtained. Switched to hot water, it will be able to supply hot water to the steam supply module (300).

Referring to FIG. 3 showing a side view of the drainage module 200, hot hot air and a liquid substance generated in the cooking chamber during food cooking are introduced through the drainage hole 130 as shown in the drawing. The hot air is moved inside the drain container 210, and the hot liquid material including water is fresh. As shown in the enlarged view of FIG. 3, the hot air flowing in the direction of the arrow and the hot liquid material have heat due to the heat exchange action of the heat exchange structure 220a in the heat exchange region formed by the heat exchange module 220. The recovery phenomenon occurs. As a result, the hot hot air moved in the direction of the arrow and discharged to the outside is recovered as it passes through the heat exchange area, and thus is finally discharged to the outside through the external exhaust pipe 250 in a low temperature state.

Conventionally, when hot food and liquid material having a high temperature generated inside the cooking chamber 110 are introduced into the drain container 130 during the cooking of food, the gas of high temperature and high pressure is discharged to the external exhaust pipe, and the hot liquid or the foreign matter is discharged to the drain pipe. Ride and flow out. However, the present invention is provided with a heat exchange module in the drainage module 200, when a hot hot air and a liquid material flows in from the cooking chamber 110 is configured to recover heat by heat exchange therefrom, the hot hot air and liquid material introduced By converting to a low-temperature gas and liquid material to be discharged to the external exhaust pipe 250 and the drain pipes 230 and 240, which will be described later. Therefore, in the related art, a separate cooling device has been provided for cooling them in order to prevent a danger problem that occurs when high-temperature, high-pressure gas and liquid materials are discharged. Since it is discharged in a lower state, it is possible to minimize the energy of the separate cooling device, thereby reducing the cost and energy source.

At this time, the heat recovered through the heat exchange action from the high temperature hot air and the liquid material introduced from the cooking chamber 110 in the heat exchange area, it can be efficiently used to generate steam in the steam supply module 300. Specifically, the heat exchange structure 220a of the heat exchange module is connected to a straight pipe 400 connected to an external straight line through a supply port 220c provided at one end, and a supply pipe through a discharge port 220b provided at the other end. 222 is connected to the steam supply module 300 is a structure. Accordingly, the heat exchange module converts the cold water (direct water) supplied from the direct pipe 400 through the supply port 220c to hot water using the heat recovered by the heat exchange action from the hot air and the liquid material at high temperature in the heat exchange module. The hot water is discharged to the discharge port 220b to be supplied to the steam supply module 300 through the supply pipe 222.

Accordingly, since the steam supply module 300 generates steam by receiving hot water instead of cold water, the steam supply module 300 has an effect of reducing energy consumed until steam is generated, compared to the conventional method of generating steam by heating cold water. Can be.

In addition, by lowering the temperature of the entire drain module 200 through heat exchange, it can effectively work to improve the durability of the appliance.

Meanwhile, although the heat exchange module has been described as being provided in the upper region of the drain container 210, the present invention is not limited thereto, and the heat exchange module may be mounted inside the housing (not shown) of the drain module 200, or may be mounted outside. In addition, the mounting form may be variously modified.

On the other hand, the direct pipe 400 is provided with a solenoid valve 410 for controlling the flow of direct water supply to the heat exchange module 220.

All. Main drain (230)

The main drain pipe is connected to the main opening 230a formed in the drain container 210, and is a passage through which liquid or foreign matter contained in the drain container 210 is discharged to the outside, and is connected to the inlet of the drain valve 234. And a second drain pipe 232 connected to the outlet of the drain valve 234.

Since the high temperature liquid contained in the sump 210 by the heat exchange module 220 is converted from high temperature to low temperature, liquid such as low temperature water or the like having a low temperature is moved to the inside of the main drain pipe. Discharged.

Here, the drain valve 234 is configured to open and close the main drain pipe 230, the first drain pipe 231 and the second drain pipe 232 of the main drain pipe 230 is provided therebetween, the drain box ( Opening and closing the path of the liquid or foreign substances discharged from the 210 to the outside. The drain valve 234 may be configured as an electric valve implemented in, for example, a 2-way or 3-way method.

la. Overflow Drain (240)

The overflow drain pipe part has a structure in which one end having an overflow opening 240a is connected to the drain container 210, and the other end is connected to the second drain pipe 232 of the main drain pipe 230. When the received liquid substance exceeds the predetermined height, the amount of liquid substance immediately flows through the overflow opening 240a to the second drain pipe 232 of the main drain pipe 230 and is always discharged to the outside. . There is no separate valve for opening and closing the discharge flow between the overflow drain portion and the second drain pipe 232, and the water filled in excess of the predetermined height is discharged to the outside at all times to the drain container 210. Ensure that fresh water is maintained at or below a maximum predetermined level. In order to achieve the above object, the overflow drain portion is connected, for example, in a form projecting upwardly to the inside of the sump 210 by a predetermined height, so that the liquid exceeds the protruding height inside the sump 210. When the material is filled, as much liquid material as possible may immediately be discharged to the second drain pipe 232 of the main drain pipe 230 through the overflow opening 240a to the second drain pipe 232. However, the present invention is not limited thereto, and various shapes and positional deformations are possible within the range in which the object of the overflow drainage can be achieved.

Like the main drain pipe 230, since the liquid material discharged through the overflow drain 240 is also converted from the high temperature to the low temperature by the heat exchange module 220, the liquid material is discharged to the outside with the temperature lowered.

Therefore, in order to prevent a risk of a safety accident that occurs when a liquid substance such as a liquid substance contained in the sump is discharged to the outside in a state of high temperature, separate cooling for cooling the discharged high temperature liquid substance. The present invention is provided with a heat exchange module 220 for recovering heat from the hot liquid material flowing from the cooking chamber 110 to the low temperature in the drainage module 200, thereby cooling in a separate cooling device Energy consumption is reduced.

hemp. External exhaust pipe (250)

The external exhaust pipe is formed to extend upwardly to be connected to the exhaust opening 250a formed on the upper surface of the drain box 210, and discharges gas, etc. introduced from the cooking chamber 110. The gas discharged through the external exhaust pipe, the hot air is recovered through the heat exchange module 220 is discharged air is lowered temperature.

Conventionally, since there is a risk of a safety accident when directly discharged to the outside without the process of cooling the gas of high temperature and high pressure, a separate cooling device for cooling the gas of high temperature and high pressure was provided, the drainage module 200 according to the present invention By configuring the heat exchange module 220 to lower the temperature through heat exchange from the high temperature hot air introduced from the cooking chamber 110, the energy consumed to cool in a separate cooling device for cooling the gas of high temperature and high pressure is reduced. And thus cost is also reduced.

bar. Circulation pipe (260)

The circulation pipe is connected to the circulation opening 260a formed in the drain container 210 and the washing nozzle 260b provided at the upper portion of the cooking chamber 110 to allow the liquid circulation to be performed inside the cooking chamber 110. More specifically, the circulation pipe includes a first circulation pipe 261 connected to the circulation opening 260a of the sump 210 and an inlet of the circulation pump 270, and an outlet of the circulation pump 270 and extends long therefrom. And a second circulation pipe 262 connected to the washing nozzle 260b provided above the cooking chamber 110.

Here, the circulation pump 270 configured between the first and second circulation pipes 261 and 262 serves to suck the water contained in the drain container 210 and resupply the inside of the cooking chamber 110.

1.3. Steam Supply Module 300

The steam supply module is provided outside the inner housing 100 and receives water through a supply pipe 310 to be described later to heat water using the heat source 122 of the heating module 120 to generate steam or The water is sprayed directly onto the heat source 122 and scattered by the internal circulation fan 124 to generate steam using a method of generating steam, thereby supplying the inside of the cooking chamber 110.

Specifically, as shown in FIG. 1, the steam supply module is not directly connected to the straight pipe 400 connected to the external straight line, but is directed vertically toward the heat exchange module 220 connected to the straight pipe 400. It consists of a structure that receives water from the heat exchange module 220 through the supply pipe 222 of the form connected to the extension. As described with reference to FIG. 2, the heat exchange structure 220a of the heat exchange module 220 is provided at one end of the heat exchange structure through a supply port 220c connected to a straight pipe 400 connected to an external straight line. Cold water) is supplied, and the hot water discharged by the heat exchange action is discharged through the discharge port 220b provided at the other end and connected to the supply pipe 222 connected to the steam supply module 300 to supply the hot water to the supply pipe 220b. Through the supply structure to the steam supply module 300. By this structure, the steam supply module does not directly receive the cold water supplied from the direct pipe 400, but the hot water supplied from the cooking chamber 110 to the cold water supplied by the direct pipe 400 in the heat exchange module 220. The hot water converted from the hot air and the liquid material through heat exchange is supplied with the hot water. Accordingly, the steam supply module may receive hot water by the heat exchange module 220, and generate steam using the heat source 122 of the heating supply module 120.

Accordingly, since the steam supply module needs to generate steam in a state where the temperature of the water is raised to a certain degree, the steam supply module generates steam more quickly and supplies the inside of the cooking chamber 110 while minimizing the energy consumed until the steam is generated. Can be.

At this time, the state of the hot water supplied by the steam supply module from the heat exchange module 220 may vary according to the degree of heat recovered by the heat exchange module 220 from the hot air and the liquid material in the cooking chamber 110.

For example, when a large amount of hot air and liquid substances are generated in the cooking chamber 110 when cooking food, since the heat recovered by heat exchange in the heat exchange module 220 increases, the water is supplied from the water pipe 400. It can be supplied to the steam supply module 300 by greatly increasing the temperature of the water. Therefore, the steam supply module 300 which is supplied with the hot water at a high temperature state may immediately generate steam and supply the steam into the cooking chamber 110 without undergoing a heating process using the heat source 122.

If there is little heat recovered through the heat exchange in the heat exchange module 220, as compared with the case where the cold water is directly supplied from the external water pipe as in the conventional manner and heated to generate steam by heating it, as in the present invention, The module 220 generates steam by receiving hot water in a state where the temperature is raised to a certain extent, thereby further reducing the energy source and time consumed for generating the steam.

Meanwhile, even when the steam supply module sprays water directly supplied to the heat source 122 and is scattered by the internal circulation fan 124 to generate steam, conventionally, cold water is sprayed to the heat source 122. However, since the present invention injects hot water whose temperature is increased by the heat exchange module 220 to the heat source 122, since the hot water is heated and vaporized faster than the cold water, this is also consumed for steam generation. It has the effect of saving energy source and time.

On the other hand, such a steam supply module, for example, is connected to the steam supply passage 300a in the form of a through passage with the inner housing 100, through the steam supply passage 300a to generate steam generated in the above-described manner The cooking chamber 110 may be supplied into the cooking chamber 110.

2. Operation of the combination oven according to the present invention

Referring to Figure 4, it will be described the flow of the combination oven according to the present invention.

First, when the oven is operated to cook food in the cooking chamber 110, the heat source 122 of the heating module 120 generates heat, and the internal circulation fan 124 rotates to operate the heat source. The heat provided by the 122 is circulated into the cooking chamber 110. During the cooking of food by this operation, hot air is circulated in the cooking chamber 110, and a high-temperature liquid substance including water droplets generated therefrom and cooking liquid generated from the cooked food is generated. The hot hot air and the liquid substance in the 110 are discharged into the drainage module 200 through the drainage hole 130.

When the hot hot air and the liquid material in the cooking chamber 110 flows into the drainage module 200 through the drainage port 130, the hot hot wind and the liquid material introduced into the drain container 210 are accommodated in the drain container 210. The heat exchange module 220 provided in the 200 recovers heat by exchanging heat with respect to the introduced hot air and liquid material. Accordingly, the hot hot air and the liquid material are converted to the low temperature state through the heat exchange module 220.

The liquid substance converted to the low temperature state by the heat exchange module 220 flows through the drain pipes 230 and 240 connected to the drain container 210 and is discharged to the outside, and the gas converted to the low temperature state is the drain container 210. It is discharged to the outside through an external exhaust pipe 250 connected with. As such, since the gas or the liquid substance is discharged to the outside by the heat exchange module 220 in a state where the temperature is lowered, the energy consumed to cool the discharged high-temperature gas and the liquid substance can be minimized, resulting in cost. And energy savings.

On the other hand, the heat exchange pipe 220a of the heat exchange module 220 recovers heat from the hot air and the liquid substance of high temperature introduced into the drain container 210, and is provided at one end of the heat exchange structure 220a to directly discharge water from the outside. The direct water (cold water) supplied through the supply port 220c connected to the direct pipe 400 connected to the line is converted into hot water using the recovered heat, and the converted hot water is provided at the other end of the heat exchange structure 220a. And discharged to the discharge port 220b connected to the supply pipe 222 connected to the steam supply module 300, thereby supplying hot water to the steam supply module 300.

The steam supply module 300 supplied with hot water through the supply pipe 222 may heat the supplied hot water using the heat source 122 of the heating module 120 to generate steam or heat the supplied hot water. Spray directly to the fan) to be scattered by the internal circulation fan 124 to generate steam in a manner to generate steam to feed into the cooking chamber 110 so that the food is moist cooked. In this manner, the steam supply module 300 does not generate steam from cold water as in the related art, but generates steam from hot water at a somewhat elevated temperature, thereby minimizing energy consumed until steam is generated. And, to generate a steam at a high speed can be supplied to the cooking chamber (110).

As described above, the present invention includes the heat exchange module 220 in the drainage module 200, thereby recovering heat from the hot air and liquid substances generated during food cooking and discharging it to the outside while the temperature is lowered. By using the heat to supply hot water to the steam supply module 300 to efficiently generate steam, it is possible to provide an energy-saving combination oven exhibiting the effect of reducing the cost and energy sources.

On the other hand, although the technical spirit of the present invention has been described in detail according to the above embodiment, it should be noted that the above embodiment is for the purpose of description and not for the limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

10: combi oven
100: inner housing
110: cooking chamber
120: heating module
130: drain
200: drainage module
210: drain bottle
220: heat exchange module
230: main drain pipe
240: overflow drain
250: external exhaust pipe
260: circulation pipe
300: steam supply module
400: water pipe

Claims (9)

An inner housing comprising a cooking compartment, a heating module and a drain;
A drain module connected to the drain hole and provided below the inner housing to discharge hot hot air and a liquid substance generated inside the cooking chamber to the outside;
A steam supply module provided outside the inner housing and supplying steam into the cooking chamber;
It is configured to include,
The drain module,
The upper surface of one side is connected to the drain port, the hot air and liquid material in the cooking chamber flowing through the drain port is accommodated, the exhaust opening is formed on the other upper surface to discharge the gas inside to the outside, and facing the exhaust opening A drain container formed on the bottom surface thereof and including a main opening for discharging the liquid substance contained therein to the outside;
It is provided in the upper region of the sump, connected to the supply pipe connected to the steam supply module, connected to the direct pipe connected to the external straight line, from the hot hot air and liquid material flowing from the cooking chamber through the drain hole A heat exchange module for recovering heat through heat exchange;
A main drain pipe connected to the main opening and discharging the liquid substance contained in the drain container to the outside;
It is provided on the lower side of the sump so as to face at least one region of the heat exchange module, one end is connected in a form protruding upwards by a predetermined height in the interior of the sump, the other end is connected in a vertical direction to the main drain pipe, An overflow drain for discharging the liquid substance filled above the protruding height inside the drain through the main drain; And
An external exhaust pipe formed to extend upwardly of the drain container so as to be connected to the exhaust opening, and to discharge the gas in the drain container converted to low temperature by recovering high temperature heat by the heat exchange module;
Characterized in that comprises a,
The heat exchange module,
It comprises a structure having a heat exchange path having a supply port and a discharge port,
The supply port is connected to the straight pipe, the discharge port is connected to the supply pipe,
The heat exchange structure between the discharge port and the supply port is configured to recover heat from the high temperature hot air introduced through the drain port and the high temperature liquid material introduced into the drain box through heat exchange, thereby recovering heat. To convert the cold water supplied through the hot water, and to supply it to the steam supply module through the supply pipe,
The liquid material overflowed in the sump more than a predetermined height, the combi oven, characterized in that the transition from the high temperature to low temperature state is discharged to the outside through the overflow drain while passing through the heat exchange area formed by the heat exchange module . The method of claim 1,
The cooking chamber is formed with a space in which food is cooked by using heat provided by the heating module and steam supplied by the steam supply module.
The heating module is configured to include a heat source for generating heat and an internal circulation fan for supplying heat generated from the heat source into the cooking chamber through a rotation operation,
The drain port is formed on the bottom surface of the cooking chamber, the combination oven, characterized in that the hot air generated in the cooking chamber and the liquid material is discharged to the interior of the drain module. delete delete delete The method of claim 1,
The steam supply module,
Combi oven, characterized in that for generating steam from the hot water supplied through the supply pipe by the heat exchange module to supply into the cooking chamber. The method of claim 1,
The heat exchange structure is composed of a plate made of a metal material, has a predetermined width length, is configured in a shape bent at a predetermined interval with a bent portion, the combination oven, characterized in that to form a predetermined heat exchange path. The method of claim 1,
The main drain pipe, the drain valve for opening and closing the discharge flow; Is provided,
And the main drain pipe includes a first drain pipe connected to the inlet of the drain valve and a second drain pipe connected to the outlet of the drain valve. The method of claim 8,
And the overflow drain is connected to a second drain pipe of the main drain pipe.

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