KR101014436B1 - Steam generator and steam oven comprising the same - Google Patents

Abstract

The present invention relates to a steam generator and a cooking apparatus including the same. In the present invention, the steam water flowing in the steam generating unit is heated by the steam heater to phase-change into saturation steam and superheat steam in order. Therefore, according to the present invention, there is an advantage that can generate an overheated steam supplied to the cooking chamber with a simpler configuration.

Steam cooker, Steam generator, Steam generator, Steam heater

Description

Steam generator and steam cooking apparatus including the same {Steam generator and steam oven comprising the same}

The present invention relates to a cooking apparatus, and more particularly to a steam cooking apparatus for supplying steam to the interior of the cooking chamber for cooking food.

A cooking appliance is a home appliance that cooks food using electricity or gas. Recently, a steam cooker for supplying steam to the inside of the cooking chamber has been released in order to prevent a phenomenon in which the food is dried by evaporation of moisture contained in the food during the heating process for cooking the food.

Such a steam cooking apparatus is provided with a steam generator for generating steam supplied to the cooking chamber. Such a steam generator includes a water storage tank in which water supplied from an external water supply source is stored or a heating tube through which water supplied from an external water supply source flows and water stored in the water storage tank or water flowing through the heating tube. It includes a heating unit for heating. In addition, a recent steam generator is configured to generate a saturated steam by heating water supplied from an external water supply source, and to supply the superheated steam generated by heating the saturated steam again to the cooking chamber.

However, in the steam generator according to the related art, the saturation steam and the superheat steam are generated by being heated by separate heaters in a space partitioned from each other. Therefore, a disadvantage arises in that the number of components constituting the steam generator is increased.

The present invention is to solve the problems caused by the prior art as described above, an object of the present invention is to provide a steam generator and a steam cooking device comprising the same is more simply configured.

According to an embodiment of the present invention for achieving the above object, the present invention is a steam heater; A first section in which steam water is heated by the steam heater while generating steam and saturated steam is generated; And a second section in which the saturation steam generated in the first section is heated by the steam heater while flowing therein to generate an overheated steam. The first and second sections are partitioned by partition ribs, and only a portion of the first and second sections communicate with each other.

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According to another embodiment of the present invention, the present invention provides a steam generator including a steam water or a saturated section in which steam water and steam flow, and a superheat section in which only steam flows; A first steam heater for heating the steam water or the steam water and steam flowing through the saturation section; And a second steam heater for heating the steam flowing through the overheating section. It includes.

According to another embodiment of the present invention, the present invention is a cavity provided with a cooking chamber; And a steam generator according to any one of claims 1 to 3, 5 to 8, and 14 to 17 for supplying steam into the cavity. It includes.

According to the present invention, there is an advantage that the configuration of the steam generator is simplified.

Hereinafter, a first embodiment of a steam cooking appliance according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing a first embodiment of a steam cooking appliance according to the present invention, Figure 2 is a front view showing a convection device constituting the first embodiment of the present invention, Figure 3 is a first embodiment of the present invention The front view which shows the steam generating apparatus which comprises the example.

First, referring to FIG. 1, a cooking chamber 11 is provided inside a cavity 10 of a steam cooking device 1 (hereinafter referred to as a “cooking device”). The cooking chamber 11 is a place where food is cooked.

The cooking chamber 11 is selectively opened and closed by the door 13. The door 13 is installed in the cavity 10 so that the upper end is rotatable up and down about its lower end.

In the shielded state of the cooking chamber 11, a control panel 15 is provided at an upper end of the front surface of the cavity 10 corresponding to the upper side of the door 13. The control panel 15 receives an operation signal for the operation of the cooking appliance 1 and serves to display information about the operation of the control panel 15 to the outside. In particular, the control panel 15 receives an operation signal for the operation of the steam generator 100 to be described later, and displays information on the operation.

Unexplained reference numerals 17 and 19 are intake and exhaust ports, respectively. The intake port 17 and the exhaust port 19 serve to communicate the inside of the cooking chamber 11 and the inside of the convection chamber 21 to be described later.

On the other hand, the cavity 10 is provided with a plurality of heating sources for cooking food in the cooking chamber (11). For example, upper and lower heaters (not shown) and bottom heaters (not shown) are installed on the upper and lower surfaces of the cavity 10 corresponding to the ceiling and bottom surfaces of the cooking chamber 11, respectively. The upper heater and the bottom heater serve to radiantly heat food in the cooking chamber 11. The convection device 20 is provided on the rear surface of the cavity 10 corresponding to the rear surface of the cooking chamber 11. The convection device 20 convectively heats the food inside the cooking chamber 11. More specifically, referring to FIG. 2, the convection device 20 includes a convection chamber 21, a convection fan 23, a convection heater 25, and a convection motor (not shown). .

The convection chamber 21 is provided at the rear of the cavity 10 corresponding to the rear of the cooking chamber 11. The convection chamber 21 is formed by a rear surface of the cavity 10 and an inner surface of the convection cover 22 installed on the rear surface of the cavity 10. The convection fan 23 and the convection heater 25 are installed in the convection chamber 21. The convection fan 23 forms a flow of air circulating inside the cooking chamber 11 and the inside of the convection chamber 21. That is, when the convection fan 23 is driven, the air inside the cooking chamber 11 is sucked into the convection chamber 21 through the intake port 17, and the convex air is discharged through the exhaust port 19. The air inside the cushion chamber 21 is discharged into the cooking chamber 11. The convection heater 25 serves to heat air circulating inside the cooking chamber 11 and the inside of the convection chamber 21 through the inlet port 17 and the exhaust port 19. The convection motor drives the convection fan 23.

Referring to FIG. 3, the cooking appliance 1 includes a steam generator 100. The steam generator 100 serves to supply the cooking chamber 11 by generating the superheated steam by heating the supplied steam water. To this end, the steam generator 100 includes a steam generating unit 110, steam heater 120, temperature sensor 130, 140, fixed bracket 160.

The steam generating unit 110 is a place where saturated steam and superheated steam are generated by being heated by the steam heater 130 while substantially supplied steam water flows. As the steam generator 110, for example, a hollow tube formed in a substantially U shape may be used.

In addition, both ends of the steam generator 110 are provided with an inlet 111 for receiving steam water and an outlet 113 for supplying an overheated steam into the cooking chamber 11. The inlet 111 is connected to a steam water supply pipe (not shown) for receiving steam water from an external water supply source (not shown). Of course, the inlet 111 may be directly connected to an external water supply. In addition, the outlet 113 may be in communication with the cooking chamber 11 to supply an overheated steam into the cooking chamber 11.

The steam generator 110 may be divided into first and second sections 115 and 117. When the U-shaped pipe is used as the steam generator 110, half of the steam generator 110 communicating with the inlet 111 is connected to the first section 115 and the outlet 113. The other half of the steam generating unit 110 communicates with the second section 117.

The first section 115 receives the steam water from a water supply source (not shown) through the inlet 111. The steam water is heated by the steam heater 120 while flowing the first section 115 to generate a saturated steam. The steam water or a part of the steam water and a saturated steam flow inside the first section 115. More specifically, the steam water flows upstream of the first section 115 communicating with the inlet 111 in a direction in which the steam water or the steam water and the saturated steam flow, and the first section. On the downstream side of 115, a portion of the steam water and a saturated steam which are heated by the steam heater 120 and are not evaporated flow.

The second section 117 is supplied with the saturation steam flowing through the first section 115. As described above, since the steam generating unit 110 is formed in a U-shape, a part of the steam water flowing in the first section 115 is heated by the steam heater 120 and evaporated to saturated steam. If not, it will not be supplied to the second section 117, but will be located at the boundary of the first and second sections 115 and 117 by its own weight. The saturated steam supplied to the second section 117 is heated by the steam heater 120 while flowing the second section 117 to generate an overheated steam. Therefore, the saturated steam or the superheated steam will flow in the second section 117. In other words, the saturation steam flows upstream of the second section 117 from which the saturation steam is supplied from the first section 115, and the saturation steam flows in communication with the outlet 113. On the downstream side, the superheat steam flows.

The steam heater 120 heats the steam water flowing in the first section 115 to generate the saturation steam, and simultaneously heats the superheat steam flowing in the second section 117 to heat the superheated steam. Generate. And in the present embodiment, the steam heater 120 is welded to the outer surface of the steam generating unit 110 is fixed. Of course, if the steam heater 120 is not necessarily fixed to the outer surface of the steam generating unit 110 by welding, the steam heater 120 can transfer heat to the steam generating unit 110, other It may be fixed to the steam generating unit 110 in a manner.

The temperature sensors 130 and 140 detect the temperature of the steam generator 110. The temperature sensors 130 and 140 include a control temperature sensor 130 and a safety temperature sensor 140. The control temperature sensor 130 transmits the temperature of the steam generator 110 sensed for the control of the steam heater 120 to the control panel 15. In addition, the safety temperature sensor 140 controls the operation of the steam heater 120 to be stopped when the detected temperature of the steam generator 110 is equal to or greater than a preset temperature.

The fixing bracket 150 is for fixing the steam generator 110, the steam heater 120, and the temperature sensor 130, 140 to one side of the cavity 10. Two fixing flanges 151 are provided on the fixing bracket 150. The fixed flange 151 is fixed to the steam generator 110 and the steam heater 120 by, for example, welding.

Through holes 153 are formed in the fixed flange 151, respectively. The fastener (not shown) passing through the through hole 153 is fastened to one side of the cavity 10, so that the fixing bracket 150 is fixed to the cavity 10. In addition, the fixing bracket 150 is provided with two sensor mounting openings (155, 157). The sensor mounting openings 155 and 157 are formed by cutting a part of the fixing bracket 150.

Hereinafter, with reference to the accompanying drawings, the operation of the first embodiment of the steam cooking appliance according to the present invention will be described in more detail.

Figure 4 is a schematic diagram showing a process of generating steam according to the first embodiment of the steam cooking apparatus according to the present invention.

First, when the user operates the control panel 15 to select cooking using steam, one or more of the heating sources are operated to cook food in the cooking chamber 11. At this time, at least the convection device 20 of the heating source is driven to generate steam.

At the same time, the steam generators 100 and 200 are operated to supply steam to the inside of the cooking chamber 11. More specifically, referring to FIG. 6, steam water is supplied to the first section 115 of the steam generator 110 through an inlet 111 of the steam generator 110. The steam water supplied to the first section 115 is heated by the steam heater 120 while flowing the first section 115 to generate saturated steam. The saturation steam generated in the first section 115 is supplied to the second section 117. At this time, a portion of the steam water flowing through the first section 115 that is not heated and evaporated by the steam heater 120 is not supplied to the second section 117 by its own weight and the first and The state positioned at the boundary of the second sections 115 and 117 is maintained.

The saturated heater supplied to the second section 117 is heated by the steam heater 120 while generating the second section 117 to generate an overheated steam. The superheat steam generated as described above is discharged through the outlet 113 of the steam generator 110 and supplied to the cooking chamber 11 (see FIG. 1).

Next, a second embodiment of the steam cooking appliance according to the present invention will be described in more detail with reference to the accompanying drawings.

5 is a longitudinal sectional view showing a main portion of a steam generator that constitutes a second embodiment of the steam cooking appliance according to the present invention;

For the same components as those in the first embodiment of the present invention among the components of the present embodiment, reference numerals of FIGS. 1 to 4 are used, and detailed description thereof will be omitted.

Referring to FIG. 5, in this embodiment, the compartment ribs are formed inside the steam generator 210, more specifically, at the boundary between the first and second sections 215 and 217 of the steam generator 210. 219). The compartment rib 219 is heated by the steam heater 220 while not flowing through steam water, ie, the first section 215, of steam water and saturation steam flowing through the first section 215. A part of the steam water serves to prevent the phenomenon that flows to the second section (217). To this end, the partition rib 219 partitions a part of a boundary of the first and second sections 215 and 217.

More specifically, the partition rib 219 partitions the lower portion of the boundary of the first and second sections 215 and 217 in a direction orthogonal to the direction in which the saturation steam flows. Therefore, a part of the steam water flowing in the lower portion of the first section 215 relatively by gravity is prevented from being supplied to the second section 217 by the partition rib 219. Therefore, according to the present embodiment, the superheat steam is more efficiently generated in the second section 217 by supplying only the saturated steam to the second section 217.

The rest of the components of the present embodiment, that is, the configuration of the steam heater 220, the temperature sensor 230, 240, and the fixing bracket 250 is the same as the first embodiment of the present invention described above. Accordingly, as in the first embodiment of the present invention, the fixing bracket 250 is provided with a fixing flange 251, a through hole 253, and a sensor mounting opening 255 and 257.

Next, a third embodiment of the steam cooking appliance according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 6 is a front view showing the main part of the second steam generating device constituting the third embodiment of the steam cooking machine according to the present invention.

The same components as those of the first or second embodiment described above among the components of the present embodiment will be described with reference to FIGS. 1 to 5.

In this embodiment, the steam generator includes the first and second steam generators. As the first steam generating device, a steam generating device constituting the first or second embodiment of the present invention described above may be used. The second steam generating device includes a steam generating pipe 310 and a steam nozzle 320.

The steam generating tube 310 is installed inside the convection chamber 21 to surround the convection heater 25. The steam generating pipe 310 is delivered with steam generated from the steam generating device, that is, superheated steam. To this end, one end of the steam generating pipe 310 has a first steam generating device, more specifically, the inlet 111 (211) (211) of the steam generating unit (110) 210 constituting the first steam generating device (Fig. 3 and FIG. 5). And the superheat steam flowing through the steam generating tube 310 is heated by the convection heater 25 to increase the temperature, it is possible to supply higher temperature steam to the interior of the cooking chamber 11 (see Fig. 1). Will be.

Meanwhile, the steam nozzle 320 is provided at the other end of the steam generating tube 310. The steam nozzle 320 serves as an outlet through which the high temperature superheat steam generated while flowing the steam generating pipe 310 is injected. In this embodiment, the steam nozzle 211 is located inside the convection chamber 21 adjacent to the exhaust port 19 (see FIG. 1). Therefore, the overheated steam injected through the steam nozzle 211 is supplied into the cooking chamber 11 through the exhaust port 19 by the convection fan 23.

Within the scope of the basic technical spirit of the present invention as well as many other modifications are possible to those skilled in the art, the scope of the present invention should be interpreted based on the appended claims. .

In the above-described embodiments, the steam generator is described as being formed in a U-shape, but the shape of the steam generator is not limited thereto. That is, the steam generating unit may be formed in a U-shape, for example. However, the outlet and the second section of the steam generating section should be located upward in the direction of gravity as compared to at least the boundary between the first and second sections.

In addition, in the above-described embodiments, the section in which the saturation steam or the superheat steam is generated is called a first or second section, respectively, but is not necessarily limited thereto. For example, a section in which the saturation steam is generated may be referred to as a saturation section and a section in which the overheat steam is generated may be referred to as an overheat section.

In the steam generator and the steam cooking apparatus including the same according to the present invention configured as described above, it is possible to generate the superheated steam by the steam generator configured more simply. Therefore, according to the present invention, by simplifying the configuration of the steam generating device, it is possible to expect the effect that can be produced more simply steam cooking equipment.

1 is a perspective view showing a first embodiment of a steam cooking machine according to the present invention.

Figure 2 is a front view showing a convection device constituting the first embodiment of the present invention.

Figure 3 is a front view showing a steam generating device constituting the first embodiment of the present invention.

Figure 4 is a schematic diagram showing a process of generating steam according to the first embodiment of the steam cooking apparatus according to the present invention.

Figure 5 is a longitudinal sectional view showing the main part of the steam generator constituting the second embodiment of the steam cooking machine according to the present invention.

Figure 6 is a front view showing the main portion of the second steam generating device constituting the third embodiment of the steam cooking machine according to the present invention.

Claims (22)

Steam heater 220; A first section 215 in which steam water is heated by the steam heater 220 to generate saturation steam while flowing therein; And A second section 217 which is heated by the steam heater 220 while the saturation steam generated in the first section 215 is heated to generate an overheated steam; Including, The first and second sections 217 are partitioned by compartment ribs 215 and only partially communicate with each other. The method of claim 1, The first section (215) and the second section (217), the steam generator is provided in one steam generating unit (210). The method of claim 1, The second section (217), the steam generating device is located above in the direction of the action of gravity than the first section (215). delete The method of claim 1, The compartment rib (215), the steam generator for delivering only the saturation steam flowing through the first section (215) to the second section (217). The method of claim 1, The compartment rib 215 is configured to communicate with an upper portion of the first and second sections 217 in the direction of gravity acting, and to partition a lower portion of the first and second sections 217 in the direction of gravity action. Generator. The method of claim 1, Inside the first section (215), the steam generator or the steam generator in which the steam flows in the direction of the action of gravity. The method of claim 1, Inside the second section (217), the steam generator is the superheated steam flows in a direction opposite to the direction of action of gravity. delete delete delete delete delete A steam generator 210 including steam water or a saturation section 215 in which steam water and steam flow, and a superheat section 217 in which only steam flows; A first steam heater 220 for heating the steam water or the steam water and steam flowing through the saturation section 215; And A second steam heater 220 for heating the steam flowing through the superheat section 217; Steam generator comprising a. The method of claim 14, The steam flowing through the saturation section (215) and the overheating section (217) is a steam generator that is formed by the steam water is heated by the first steam heater (220). The method of claim 15, The saturated steam flowing through the superheat section 217 is heated by the second steam heater 220 to generate an overheated steam. The method of claim 14, The first and second steam heaters 220 are one steam heater 220 corresponding to the saturation section 215 and the overheating section 217. Cavity 10 is provided with a cooking chamber (11); And The steam generator of any one of claims 1 to 3, 5 to 8, and 14 to 17 for supplying steam into the cavity; Steam cooking equipment comprising a. The method of claim 18, Steam generated by the steam generator, the steam cooking apparatus is heated by the convection heater 25 is supplied to the interior of the cooking chamber (11). The method of claim 18, Steam cooking apparatus further comprises a steam generating pipe 310 is the steam generated by the steam generating device is flowing, the steam flowing therein is heated by the convection heater (25). The method of claim 20, Steam heated while flowing inside the steam generating tube 310 is directly injected into the cooking chamber 11 or steam cooking injected into the convection chamber 21 in which the convection heater 25 is installed. device. The method of claim 21, Steam injected into the convection chamber 21 is steam cooked into the cooking chamber 11 together with air circulating inside the cooking chamber 11 and the interior of the convection chamber 21. device.

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