KR101878048B1 - A cooking appliance having a cooktop thereon - Google Patents

Abstract

The present invention relates to a cooking appliance provided with a cooling structure capable of improving the cooling efficiency with respect to a high heating portion of a cooktop.
The present invention relates to a cooker (10) having a cooktop (20) installed on an upper portion thereof, an electrical component (27) provided in an inner space of the cooktop; A chip 51 as a heat generating part provided in the electric component 27 and a heat sink 52 for emitting heat of the chip; A vertical extension section 61 extending in the vertical direction from the front of the cooking utensil side and provided with an air inlet opening 611 at the lower end thereof and a side extension section 61 connected to the upper end of the vertical section 61, (60) having an inlet (62); Air outlets (621, 622) opened toward the inner space of the cooktop at the side extension section (62); Fans (71, 72) installed at the air discharge port and discharging the air of the duct to the internal space of the cooktop; And a guide cover (30) covering the chip and the heat sink and separating the space provided with the chip and the heat sink from the internal space of the cooktop. The air discharged by the first fan (71) ) Into the space provided with the chip and the heat sink.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooker including a cooktop,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device, and more particularly, to a cooking device having a cooling structure capable of improving cooling efficiency for a high heating area of a cooktop.

Kitchen appliances are home appliances installed in kitchens, and especially cooking appliances are home appliances for cooking food. The cooking of the food is performed by applying heat to the ingredients, and the cooking appliance has a heat source for providing such heat.

Cooking equipment can be classified into open type and closed type cooking equipment depending on the type of space where food is placed. The closed cooking devices include an oven and a microwave oven, and open cooking devices include a cooktop and a hop. A closed type cooking device is a cooking device that shields a space where food is placed and cooks food by heating a shielded space. The open type cooking device is a cooking device in which a container containing food or food is placed in an open space and the food or food container is heated to cook food. The closed type cooking apparatus is provided with a cooking chamber, which is a space that is shielded when the food is placed and food is to be cooked. Such a cooking chamber becomes a space where food is substantially cooked. A heat source is provided in the inside or outside space of the cooking chamber to heat the cooking chamber.

2. Description of the Related Art In recent years, a closed type cooking device and an open type cooking device are installed at the same time, and a plurality of heat sources are combined to provide various cooking utensils and a plurality of foods simultaneously. In the above complex cooking device, an open type cooking device is placed on the upper side of the closed type cooking device. Also, the open cooking device is provided with a plurality of heaters or burners, and is installed so that a large number of dishes can be cooked at the same time. In such a cooking appliance in which a plurality of heat sources are installed, a flow path of cooling air for cooling a plurality of heat sources and electrical components is accompanied.

The heater or the burner may include an induction heating module that generates a vortex current by sending a current to the magnetic coil to heat the cooking vessel itself to cook food, And a radiant heating module for cooking the food with radiant heat. In addition, it may be equipped with a Hidden Radiant Burner that uses energy generated by burning gas fuel, but heats the top plate with a ceramic uniform burner that uses radiant energy generated by gaseous fuel rather than direct heat.

Especially, in the induction heating method, it is important to control the chip temperature of the PCB which drives the induction heater to operate the magnetic coil. If the temperature of the chip excessively rises, there is a risk of malfunction, so it is necessary to stop the operation of the chip until the chip is cooled to a stable temperature. At this time, the magnetic coil also becomes inoperable, Leading to discomfort.

For this reason, conventionally, external air is introduced into the internal space of the cooktop through the cooling air flow path, and a large heat sink, that is, a heat sink is attached to the high heat generating chip to cool the high heat generating chip, So as not to rise.

However, in the case where there is a high-temperature heat source such as an oven in the lower part of the cooktop, there is a limit to temperature control of the chip in an environment where low-temperature external air can not easily be obtained, such as when a cooking device including a cooktop is installed in a built- . That is, in such an environment, a duct having a large flow cross-sectional area is installed in order to allow the outside air to flow into the cooktop, and the size of the fan for forced air flow must be increased. Causing the volume to excessively increase, causing the noise of the fan to become large and causing inconvenience to the user.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a cooking device which is expected to be installed in a narrow installation space, (In comparison with the air in the inner space of the cooking cavity).

It is another object of the present invention to provide a cooling structure of a cooking appliance which can efficiently supply air introduced into a cooking device to a heat source, and actively exchange heat between the supplied air and a heat source, thereby improving cooling efficiency .

Another object of the present invention is to provide a cooling structure of a cooking appliance in which normal operation is not affected by temperature, for example, the IGBT chip is directly heated by other heat sources.

It is another object of the present invention to provide a cooling structure of a cooking appliance which increases the cooling efficiency by minimizing the loss of air flow in the course of supplying external air to a heat source inside the cooking device.

It is another object of the present invention to provide a cooling structure of a cooking appliance which is easy to install.

It is another object of the present invention to provide a cooling structure of a cooking appliance which improves the cooling efficiency by smoothly supplying outside air as a whole to the internal structures of a cooking device requiring cooling.

According to an aspect of the present invention, there is provided a cooking apparatus, comprising: a duct for sucking cold air from a lower front side of a cooking device through a duct and supplying the cooled air to an inner space above a cooking device; A cooling structure of the cooking appliance is provided which covers the guide cover to increase the airflow efficiency for cooling the chip while preventing the chip from being exposed.

More specifically, the present invention relates to a cooker (10) provided with a cooktop (20) at an upper portion thereof, wherein the cooker (10) comprises an upper and lower extension section (61) extending in the vertical direction from the front side of the cooking appliance side and having an air inlet A duct 60 connected to an upper end of the upper and lower extension section 61 and having a side extension section 62 extending to a lower portion of the cooktop; Air outlets (621, 622) opened toward the inner space of the cooktop at the side extension section (62); And a fan (71, 72) installed at the air discharge port and discharging the air of the duct to the inner space of the cooktop, thereby minimizing an increase in the volume of the cooking appliance, It is possible to increase the cooling efficiency by suction.

Further, the present invention provides a cooking device (10) having a cooktop (20) installed on an upper portion thereof, an electrical component (27) provided in an inner space of the cooktop; A chip 51 as a heat generating part provided in the electric component 27 and a heat sink 52 for emitting heat of the chip; A duct 60 which is a passage for introducing air outside the cooking device into the internal space of the cooktop and having a side extension section 62 extending to a lower portion of the cooktop; Air outlets (621, 622) opened toward the inner space of the cooktop at the side extension section (62); Fans (71, 72) installed at the air discharge port and discharging the air of the duct to the internal space of the cooktop; And a guide cover (30) covering the chip and the heat sink and separating the space provided with the chip and the heat sink from the internal space of the cooktop. The air discharged by the first fan (71) The guide cover covers the chip and the heat sink so that the chip and the heatsink are not directly affected by the heat source from other heat sources , The air introduced into the cooktop internal space can be supplied to a chip requiring intensive cooling, thereby cooling the chip and ensuring normal operation of the chip.

The chips are arranged side by side along the direction of air flow defined by the guide cover, and the chips are arranged laterally when viewed in the air flow direction defined by the guide cover. So that the cooling air can be smoothly escaped without contacting the heat sink as much as possible, thereby further improving the cooling efficiency.

Further, by making the cross-sectional area of the air flow space having the chip and the heat sink smaller than the cross-sectional area of the air inlet and the air outlet of the air flow space separated by the guide cover, the flow rate of air is increased and turbulence The heat exchange efficiency between the air and the heat source can be further increased.

The height of the upper surface (31) of the guide cover is higher than that of the air outlet of the housing of the first fan. At the end of the air guide opening of the guide cover, a protrusion extending toward the housing of the first fan The jaw 33 is provided to maximally shield the gap between the housing of the first fan and the upper surface of the guide cover to minimize the flow loss of the air.

Also, the electric component 27 is installed in the electric-field housing 26, and the air introduced by the first fan moves along the space defined by the guide cover and the electric-field housing, The shape of the housing can also serve as a guide for cooling air flow, so that the shape of the guide cover to be newly added can be minimized.

The guide cover includes a top surface (31) and a side surface (32), the electrical housing including a side surface (262), the air flow space defining an upper surface and a side surface of the guide cover The shape of the guide cover can be simplified, and the guide cover can be easily assembled. In addition, since the electrical housing has a side surface, the bending rigidity of the electrical housing can be further increased by increasing the section modulus as viewed from the bottom surface of the electrical housing, which ensures rigidity of the electrical housing in which the electrical component is installed Which is more advantageous for the protection of electrical equipment.

Also, since the first fan for introducing the air into the space separated by the guide cover uses the sirocco fan, the air in the lower part of the cooktop can be rapidly pressurized and discharged to the side while introducing air into the cooktop, Is directly supplied to the high-temperature chip, the cooling efficiency can be further increased.

 In addition, the present invention is characterized in that the air outlet includes a first air outlet 621 and a second air outlet 622, the first fan 71 being installed at the first air outlet, And a second fan (72) for discharging air into the cooktop internal space outside the space in which the chip and the heat sink are provided is installed in the second air outlet, Lt; / RTI > As described above, according to the present invention, the external air is appropriately distributed to different spaces in the cooktop through one duct, thereby minimizing the space occupied in the product for the introduction of the external air, It is possible to introduce air into the space.

The cooking apparatus (10) comprises: a cooktop case (23) defining an inner space of the cooktop; An intermediate plate 24 provided at an intermediate height of the cooktop case and provided with a working coil 25 thereon; Wherein the air discharged through the second fan passes through a space between the bottom of the cooktop case and the intermediate plate and a space between the intermediate plate and the top plate member, And then discharged to the outside of the cooktop case, the air introduced through one duct is optimally supplied to the cooling of the high heat-generating chips, and the cooling air of the other heating coil As shown in FIG.

The second fan may use a box fan.

Also, the first air outlet for supplying air to the hot chips is disposed closer to the air inlet of the duct than the second air outlet, so that the air flow required for cooling the hot chips can be preferentially secured.

In the case where the cooker is provided with the oven 90 at the lower part of the cooktop, the structure of the duct is particularly advantageous for securing the cold outside air.

According to the present invention, even in a cooking device having a narrow installation space and a lower heat source, which are installed in a built-in manner and provided with an oven at the bottom, the volume of the cooking device is not increased or volume increase is minimized, .

Further, according to the present invention, only by providing the guide cover, the limited outside air flowing into the cooktop internal space is intensively flown to the heat source to be smoothly cooled, thereby enhancing the cooling efficiency. In addition, So that the hot chips can be prevented from being influenced by other external heat sources.

Further, according to the present invention, it is possible to minimize the loss of flow and to further increase the cooling efficiency in flowing outside air into the space requiring cooling.

In addition, according to the present invention, since the electric-field housing for installing the electrical component forms a part of the duct forming the air flow path for cooling the high heat-generating chip and the heat sink, it is possible to increase the rigidity of the electric- The structure can be simplified and the installation work of the guide cover can be further facilitated.

In addition, according to the present invention, it is possible to smoothly supply outside air to a site where intensive cooling is required, and to cool the entirety of other heat sources in the cooktop inner space by cooling air. It is possible to suck air from one duct and prepare it.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a perspective view of a cooking apparatus according to the present invention,
Fig. 2 is a perspective view showing the upper plate of the cooking apparatus of Fig. 1 and a state in which an outer housing is removed;
FIG. 3 is an enlarged perspective view of the cooktop portion of FIG. 2,
Fig. 4 is an exploded perspective view of the station tower of Fig. 3,
FIG. 5 is a front perspective view showing a state in which the cooking coil and the intermediate plate of the cooktop of FIG. 3 are removed,
FIG. 6 is a perspective view of a full-length housing installed in the cooktop case of FIG. 5;
FIG. 7 is a plan view showing electrical components installed in the electrical housing of FIG. 6;
8 is a view showing a state in which a guide cover and a first fan are installed on chips and heat sinks of electrical equipment in a cooktop case,
9 is a side sectional view showing a fan installed in the cooktop case and a flow path of air generated thereby, and
10 is a schematic view showing fans installed in a duct portion and an air outlet of a duct according to the present invention, respectively.

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

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be able to refer to it.

[Overall structure of cooker]

FIG. 1 is a perspective view of a cooking apparatus according to the present invention, FIG. 2 is a perspective view showing a state that the upper plate and the outer housing of the cooking apparatus shown in FIG. 1 are removed, and FIG. 3 is an enlarged perspective view of the cooktop portion of FIG.

The cooker 10 according to the present invention has the shape of a rectangular parallelepiped as a whole, and a cooktop 20 capable of cooking food is located at an upper end portion of the cooktop 10. The lower portion of the cooktop, that is, An oven 90 is installed. The oven (90) has a front door (91) opened frontward. When the front door is opened, a cavity (93) is provided inside the oven (90). The food placed in the cavity of the cavity is cooked by heating the space inside the cavity.

The top surface of the cooktop 20 is defined by a top plate member 21 and container guide lines 22 on which a container containing food to be cooked is to be placed. This container guide line 22 is displayed on the upper portion of the working coil 25 to be described later. The working coil 25 generates a swirling current by flowing a current to the magnetic coil, thereby heating the cooking container itself by the IH method. In addition, a heating plate 251 including a heating coil is installed at a rear side of the upper plate member, so that the food can be cooked by radiant heat generated from the heating coil. A window 29 is provided in front of the container guide line 22 to indicate whether the working coil 25 corresponding to the container guide line 22 is operating. The user can visually confirm information such as the operation of the working coil 25 and the operation intensity through the window 29 through the visible light irradiated from the indicator 28 installed under the upper plate member 21. [

A predetermined space is provided between the cooktop 20 and the cavity 93 and a predetermined space is also provided between the cavity 93 and the side housing 11 of the cooking apparatus 10. [ The duct 60 illustrated in the embodiment of the present invention includes an upper and lower extension section 61 extending in the vertical direction through a space between the cavity 93 and the side housing 11, And a side extension section 62 connected to the upper end. The side extension section 62 extends to the inside of the cooking apparatus at the end of the upper and lower extension sections and is provided in the space between the cooktop 20 and the cavity 93.

The upper and lower extension section 61 includes an angle tube having a 'C' shaped cross section and a cooking device 10 for closing the angle tube by a ' Of the side housing (11). According to this structure, the upper and lower extension sections 61 of the duct can be realized by merely positioning the angle tube having the 'C' shaped cross section in contact with the inner surface of the side housing 11 and fixing them to each other. However, the upper and lower extension sections 61 are not necessarily implemented in this manner, and a structure suited for sucking air from the front lower portion of the cooking apparatus to the laterally extending extension section 62 to be described later is sufficient.

The lower end of the upper and lower extension section 61 serves as an air inlet 611 and can suck air located in a space close to the floor. The air intake opening 611 may be opened downward, opened sideways, or both opened downward and sideways. The opening direction of the air intake opening may be cold (compared to the cooktop inner space) It would be enough to open it to a space that can secure enough outside air.

It is preferable that the above-mentioned upper extension section 61 is provided on the side surface of the cooking apparatus 10, and as close as possible to the front side from the side surface of the cooking apparatus. The air in the spaces on the side and rear sides of the cooking apparatus 10 is led by the built-in furniture to the cooking apparatus 10, particularly to the oven (not shown) It is likely that the state is heated to some extent by the heat generated from the heat sources 90 and 90. Such heated air may not be smoothly escaping outside due to the characteristics of built-in furniture. In consideration of this point, in the present invention, the air inlet 611 of the duct 60 is disposed as far as possible forward. The air inlet 611 disposed at the front allows relatively cooler air to be secured through the gap between the built-in furniture and the front lower portion and the floor of the cooking appliance 10. [

2 and 10, the upper end of the upper and lower extension sections 61 of the duct 60 is connected to the side extension sections 62 in a communicative manner. A side extension section 62 extends into the space between the cooktop 20 and the oven 90 and has air outlets 621 and 622 open toward the cooktop 20. The air outlet 621 has a first air outlet 621 disposed closer to the upper and lower extension sections 61 and a second air outlet 622 disposed farther away from the upper and lower extension sections 61.

The first air outlet 621 is provided with a first fan 71 to discharge the air of the duct to the inner space of the cooktop to be described later, particularly to the air passage formed by the guide cover 30 and the electric housing 26. A second fan (72) is installed in the second air outlet (622) to discharge the air of the duct to the inner space of a cooktop to be described later.

Referring to FIG. 3, the cooktop is opened upward, and the outer shape is defined by a cooktop case 23, which is formed in the shape of a rectangular shell as a whole. In Figs. 2 and 3, a cooktop is shown with the top plate member 21 shown in Fig. 1 omitted. That is, an upper plate member 21 is provided at an upper end of the cooktop case 23 to seal the inner space of the cooktop case upward.

An intermediate plate 24 is provided at a middle height of the cooktop case to define a lower space and an upper space of the intermediate plate 24 in the cooktop case. On the upper portion of the intermediate plate 24, a working coil 25 is installed as shown in the figure. The mounting position of the working coil corresponds to the position of the container guide line 22 of the upper plate member 21 described above. And a heating plate 251 is provided at the right rear portion.

An indicator 28 is provided on the intermediate plate 24 in front of each working coil 25 and the position of the indicator 28 corresponds to the position of the window 29. In the indicator 28, a substrate on which an LED (Light Emitting Diode) is mounted is provided to visually express the operation and operation intensity of the corresponding working coil, and irradiate the visible light upward.

An electrical component 27 including a circuit for driving the working coil 25 and the heating plate 251 and controlling the indicator 28 is disposed on the bottom surface of the cooktop case as a lower space of the intermediate plate 24. [ In front of the electric component 27, fans 71 and 72 for introducing outside air into the internal space of the cooktop defined by the cooktop case are provided. The fan sucks the air through the air intake port 611, the upper and lower extension sections 61 and the side extension sections 62 of the duct to discharge the air into the internal space of the cooktop as described above.

The electric component 27 and the cooling structure provided in the space below the intermediate plate 24 of the cooktop case will be described in detail below with reference to the internal structure of the cooktop.

[Internal Structure of Cooktop]

4 to 7, the structure of the cooktop will be described with reference to the drawings.

Fig. 4 is an exploded perspective view of the branch tower of Fig. 3, Fig. 5 is a front perspective view showing a state in which the cooking coil and the intermediate plate of the cooktop are removed, Fig. 6 is a perspective view showing the electric- FIG. 7 is a plan view showing an electrical component installed in the electrical housing of FIG. 6; Fig. 5 shows a state in which the second fan is omitted.

The electrical component 27 is installed directly on the bottom of a cooktop case 23 made of metal rather than installed directly on the bottom of a metal-made cooktop case 23, so that the electrical component 27 can be easily assembled and maintained. Further, since the cooktop case 23 can be made of a metal material having high strength for securing and supporting the cooktop, it is disadvantageous in terms of insulation when the electrical product 27 is directly provided on the cooktop case. In view of this point, it is obvious that fixing the electrical component 27 to the electrical component housing 26 and fixing the electrical component housing 26 to the cooktop case will be more advantageous from the viewpoint of insulation of the electrical component. When the electrical component 27 is fixed to the cooktop case 23 through the electrical housing 26 when the oven 90 is installed in the lower part of the cooktop case 27, the heat of the oven 90 is transferred to the electrical component 27 through the cooktop case made of metal. It is possible to protect the electric component from the heat of the oven. This function can be more reliably realized by installing the electric component 27 in the electric housing 26 at a predetermined distance from the bottom of the cooktop case 23.

The electrical component 27 installed in the electrical housing 26 may comprise a general element, a circuit comprising the chip, and in particular a high heating element chip 51. The high heating element chip 51 may be attached to a heat sink, so-called heat sink 52, to enhance the heat radiation effect. The heat sink 52 is preferably made of a material having a very high thermal conductivity, and is preferably provided with a plurality of fins so that the surface area is large.

In the present invention, it is exemplified that a pair of electric components 27 are installed in a pair of electric-field housings 26, respectively. However, the number of electrical housing and the number of electrical parts can be varied in consideration of the number of working coils and the space in the cooktop case.

Referring to FIG. 6, the side surfaces 262 of the electric-field housing are provided with protruding side surfaces 262 at both side ends of the bottom surface on which the electrical components 27 are installed. The side surface 262 facilitates an operator to grip the electrical housing. Further, since the side surface 262 is provided, it is advantageous to provide the fastening structure of the electric-field housing and the cooktop case on the side surface. In addition, when the side surface 262 is provided at both side ends of the bottom surface 261 in comparison with the electric-field housing having only the bottom surface 261 of the flat plate shape, the sectional modulus is increased by the side portion when viewed from the front It is possible to further improve the bending resistance of the bottom surface 261 with respect to the longitudinal direction, and the rigidity of the electric-field housing is further increased.

The electric field housing 26 further includes a bottom surface 263 in which the bottom surface 261 is extended so that the fans 71 and 72 can be installed in front of the housing 26. The bottom surface 263 on which the fan is installed has a first air outflow hole 41 and a second air outflow hole 41. The first air outflow hole 41 and the second air outflow hole 41 have a position and a shape corresponding to the first air outlets 621 and the second air outlets 622, An outflow hole 42 is provided. Of course, the bottom surface of the cooktop case disposed between the first air outlet and the first air outlet hole is also opened in the same manner, and this is also the case with respect to the second air outlet hole.

It is preferable that the bottom surface of the electric-field housing 26 and the bottom surface of the cooktop case 23 and the top surface of the side extension portion 62 of the duct 60 are in close contact with each other to prevent air from flowing in and out. Particularly, in this portion, there is a room where the oven is heated when the oven is operated, so that the air heated by the oven does not flow, and the relatively cool air flowing through the air inlet 611 of the duct 60 flows into the outside It is preferable to prevent leakage.

The mounting positions of the fans 71 and 72 may be installed at various positions such as the bottom surface 263 of the electrical housing 26 and the ceiling portion of the lateral extension section 62 of the duct 60, In order to control the fans 71 and 72 by electrically connecting the electric components and the fan to each other and to facilitate the installation work, it is preferable to install the electric components on the floor piece 263 in various ways.

A chip 51 and a heat sink 52 attached thereto are disposed on the bottom surface 261 of the electrical housing 26 corresponding to the first air outflow hole 41, A first fan (71) is provided on the first outlet hole (41). The air discharged from the first fan (71) can be supplied to the chip (51) and the heat sink (52). Since the first outlet hole 41 is located closer to the air inlet port 611 of the duct than the second outlet hole 42, it is more advantageous to secure the outside air. Accordingly, as the rotational speed of the first fan 71 installed on the first outlet hole 41 is adjusted, the follow-up of the air suction amount can be more surely and quickly performed, so that the rotational speed of the first fan 71 can be controlled, It is easier to control the flow amount of air supplied to the heat sink 51 and the heat sink 52.

It is exemplified that the first fan 71 is a sirocco fan whose suction direction coincides with the axial direction of the fan and whose discharge direction is perpendicular to the axial direction of the fan. When the sirocco fan is installed as the first pen 71 and the rotary shaft of the fan is vertically installed, the air in the lower space can be sucked and the sideways can be strongly ejected without the fan taking up a large height.

A guide cover (30) is provided on the chip and the heat sink. The guide cover 30 has a top surface 31 at a slightly spaced up position relative to the chip and the heat sink and includes a side surface 32 isolating the lateral space to include the chip therein. The guide cover 30 is fixed to the electrical housing 26. The top surface 31 and the side surface 32 of the guide cover 30 are connected to the bottom surface 261 and the side surface 262 of the electrical housing 26, And a substantially airtight air flow path is defined in the up, down, left, and right directions.

An opening on the air inlet side of the air flow path communicates with a discharge opening of the first fan (71). Accordingly, all of the air discharged from the first fan (71) moves through the air flow path.

A second fan (72) is installed on the second air outlet hole (42). The air discharged by the second fan (72) flows into the cooking cavity of the cooktop excluding the air flow path defined by the electrical housing and the guide cover And flows in the remaining internal space.

[Cooling Structure of Cooktop]

Hereinafter, a structure in which electric components, chips, and working coils provided inside the cooktop are cooled by a structure of a first fan, a second fan, a guide cover, and an electric-powered housing will be described.

FIG. 8 is a view showing a state in which a guide cover and a first fan are installed on chip and heat sink of electrical equipment in a cooktop case, FIG. 9 is a side sectional view showing a fan installed in the cooktop case and a flow path of air generated thereby, 10 is a schematic view showing the fans installed in the duct portion and the air outlet of the duct according to the present invention, respectively. 8 is a cross-sectional view taken along the line A-A, B-B, B, C, D, respectively. And the H-H cross section of Fig. 10 is shown in Fig.

Referring to FIGS. 5, 6, and 8, first, the structure and function of the guide cover 30 will be described. The side surface 32 of the guide cover 30 is recessed at its middle portion in the longitudinal direction so that the air flow path defined by the guide cover 30 has a smaller cross sectional area of the air flow in the middle portion than the inlet and outlet. This accelerates the flow rate of the air in the middle section along the longitudinal direction of the air passage defined by the guide cover 30. [ Therefore, when the chip 51 and the heat sink 52 are disposed in the acceleration period of the air flow, the heat radiation is promoted by the flow of the accelerated air. Accelerated air can cause turbulence, and turbulence increases the number of contact between air molecules and the chip 51 and the heat sink 52. Therefore, the shape of the side surface 32 described above functions to increase the cooling efficiency of the chip 51 and the heat sink 52. According to the shape of the inlet of the air flow path, the air discharged from the first fan is guided and guided to the chip 51 and the heat sink 52.

According to the embodiment of the present invention, the heat sink 52 also has grooves and fins extending in the front-rear direction, which also increases the contact efficiency with the air without interfering with the air flow.

And a plurality of high-temperature chips 51 attached to the heat sink 52 are arranged side by side along the flow direction of the air. This prevents the air that has passed through the hot chips from coming into contact with the heat sink again so that the heat absorbed by the air passing around the hot chips is not absorbed into the heat sink again, thereby promoting the heat dissipation of the hot chips.

Further, in the embodiment according to the present invention, the arrangement in which the high heat generating chips 51 are arranged side by side in the air flow path defined by the guide cover is exemplified. This arrangement further reduces the likelihood that the air passing through the hot chips will substantially contact the heat sink again, rather than the hot chips 51 being centered along the length of the air flow path. This arrangement also increases the likelihood that the heat absorbed by the air passing around the hot chips will not be absorbed back into the heat sink.

The upper surface 31 of the guide cover 30 also shields the chip 51 and the heat sink 52 upward. This isolates the air flow path and separates the chip 51 and the heat sink 52 from the working coil 25 provided on the intermediate plate 24 described above. Therefore, the radiation heat due to the heat generated in the working coil 25 reaches the chip 51 and the heat sink 52 is blocked by the upper surface 31. As described above, the guide cover functions not only to form a flow path for cooling air for the chip 51 and the heat sink 52, but also to prevent the chip and the heat sink from being heated from a heat source outside the guide cover It is worth noting.

On the other hand, at the end of the guide cover 30 on the side of the first fan 71, a protrusion 33 is provided. The protruding jaw 33 is provided so as to extend from the guide cover 30 toward the housing of the first fan 71. The end of the protruding jaw 33 is formed in the vicinity of the end on the discharge side of the housing of the first fan Facing each other. The guide cover 30 may be made of a material capable of being elastically deformed so that when the guide cover 30 is fixed to the electric housing 26, To be tightly adhered to the housing. According to this structure, it is possible to prevent a gap on the side of the air inlet defined by the guide cover, so that the air discharged from the first fan is discharged to the air flow path defined by the guide cover without flow loss, The cooling efficiency of the heat sink can be further increased. The protruding jaws may be provided not only on the upper surface of the guide cover 30 but also on the side surfaces thereof. It is preferable that the protruding length of the protruding jaw is about 1 mm or less.

It should be noted that a method of fastening the end of the guide cover 30 and the housing of the first fan 71 may be applied to the present invention even if the structure of the projecting step 33 is not provided.

Next, referring to Figures 5 and 6, and Figures 9 and 10, the cooling structure and function associated with the second fan 72 will be discussed. A second fan 72 is installed on the second air outflow hole 42 to suck outside air through the second air outlet 622 of the duct and to discharge the air into the cooktop internal space outside the space provided with the chip and the heat sink . The second fan 72 may be, for example, a box fan. The box fan is a fan that discharges air in one direction of the rotation axis of the fan in the other direction. According to the present invention, a box fan is installed such that the rotation axis of the fan is vertical.

The air discharged from the box fan 72 flows along the inner space of the cooktop. The upper end of the cooktop case 23 is shielded by the upper plate member 21 and the intermediate plate 24 and the working coil 25 are spaced apart from the upper plate member at the lower portion of the upper plate member, 24 are spaced apart from each other. Therefore, a space is also provided between the upper plate member 21 and the intermediate plate 24, and a space is also provided between the intermediate plate 24 and the bottom plate of the cooktop case or the bottom surface of the full-length housing.

A part of the air discharged to the inner space of the cooktop by the second fan flows into the space between the upper plate member 21 and the middle plate 24 and into the space between the middle plate 24 and the bottom plate or the electric field of the cooktop case And also flows into the space between the bottom surfaces of the housing. As described above, the working coil 25 also generates considerable heat. The LED of the indicator 28 should not be overheated to ensure its operation. Therefore, the cooling structure as described above not only cools the LED of the indicator but also cools the working coil 25 by flowing air to both the upper and lower portions of the working coil 25, The air also cools the electrical components. When the container is present on the top plate member 21, the heat generated by the heating of the container is again radiated into the inner space of the cooktop through the top plate member 21 and re- Lt; / RTI >

Thus, the air flows into the inner space of the cooktop through the second fan, flows through the space, and the heated air is discharged to the outer space of the cooktop by cooling the inner space. The heat outlet from the inner space of the cooktop to the outside space may be provided at the rear of the cooktop, more specifically at the rear upper portion of the cooktop.

According to the present invention, by providing two fans in one duct and cooling them in different paths, it is possible to design the most suitable for the purpose of cooling. The lateral extension of the duct serves as a manifold to distribute the air introduced through the one duct to the two fans. The amount of air to be distributed is determined by the positions of the first air outlet and the second air outlet, And can be controlled by the type of the first fan and the second fan installed therein, the rotation speed of the fan, and the like.

As described above, according to the present invention, by installing one duct and flowing the air flowing into the internal space of the cooktop in different ways, it is possible to minimize the space occupied by the duct in the cooking apparatus, can do. Also, it is possible to increase the cooling efficiency by arranging more suitable fans corresponding to different air flow systems designed to increase the cooling efficiency by installing a plurality of smaller fans than installing one larger fan.

Also, as the rotation speed of the fan increases, the more noise is generated. If two kinds of fans having different structures are applied to correspond to the cooling structure as in the present invention, the fan speed can be lowered overall, It is possible. Further, since the guide cover concentrates the flow of air in a heat source to be intensively cooled, cooling can be smoothly performed even if the fan is rotated at a relatively low speed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It is obvious that a transformation can be made. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

10: Cooking equipment
11: side housing
20: Cooktop
21: Member of upper plate
22: Container guide
23: Cooktop Case
24: Intermediate plate
25: Working coil
251: heating plate
26: Electrical housing
261, 263:
262: Side
27: Electrical equipment
28: Indicator
29: Window
30: Guide cover
31: upper surface
32: Side
33: protruding chin
41: First air outflow hole
42: Second air outflow hole
51: chip (high heat)
52: Heat sink (heat sink)
60: Duct
61: Upper and lower extension sections
62: side extension section
611: Air intake
621: first air outlet
622: second air outlet
71: First fan
72: second fan
90: Oven
91: Front door
93: Cavity

Claims (15)

As a cooker provided with a cooktop at the top,
An electrical component provided in the internal space of the cooktop;
A chip (51) which is a heat generating part provided on the electric component and a heat sink (52) which emits heat of the chip;
A duct which is a passage for introducing air outside the cooking device into the internal space of the cooktop and has a side extension section extending to the lower portion of the cooktop;
An air outlet opening toward the inner space of the cooktop in the duct lateral extension section;
A fan installed at the air discharge port to discharge the air of the duct into the internal space of the cooktop; And
And a guide cover (30) covering the chip (51) and the heat sink (52) and separating the space provided with the chip and the heat sink from the internal space of the cooktop,
Wherein air discharged by the first fan flows into a space separated by the guide cover (30) and provided with the chip (51) and the heat sink (52).
The method according to claim 1,
In the duct,
And an upper extension portion extending in a vertical direction from a front side of the cooking device side and having an air intake port at a lower end portion thereof and a side extension portion connected to an upper end portion of the cooking utensil and extending to a lower portion of the cooktop,
And the air outlet is provided in the lateral extension section.
delete The method according to claim 1,
The chip is provided in two or more,
Wherein the chips are arranged side by side along an air flow direction defined by the guide cover.
The method according to claim 1,
Wherein the chip is disposed laterally when viewed in a direction of air flow defined by the guide cover.
The method according to claim 1,
Wherein a sectional area of the air flow space in which the chip and the heat sink are provided is narrower than a cross sectional area of the air inlet and the air outlet of the air flow space separated by the guide cover.
The method according to claim 1,
And a protrusion protruding toward the housing of the first fan is provided at an end portion of the guide cover toward the air inlet.
The method according to claim 1,
The electrical component is installed in the electrical housing,
Wherein the air introduced by the first fan moves along a space defined by the guide cover and the electric-field housing.
The method of claim 8,
Wherein the guide cover includes a top surface and one side surface,
Wherein the electrical housing comprises one side,
Wherein the air flow space through which air introduced by the first fan flows is defined by an upper surface and a side surface of the guide cover and a side surface of the electric field housing.
The method according to claim 1,
Wherein the first fan for introducing air into the space separated by the guide cover is a sirocco fan.
The method according to claim 1,
Wherein the air outlet includes a first air outlet and a second air outlet,
Wherein the first fan is disposed at the first air outlet and discharges air into a space separated by the guide cover and provided with the chip and the heat sink,
And the second air outlet is provided with a second fan for discharging air into the cooktop internal space outside the space provided with the chip and the heat sink.
The method of claim 11,
The cooking apparatus comprises:
A cooktop case defining an inner space of the cooktop;
An intermediate plate provided at an intermediate height of the cooktop case and having a working coil disposed thereon;
And a top plate member installed on the top of the cook top case,
Wherein the air discharged through the second fan is branched into a space between the bottom of the cooktop case and the intermediate plate and a space between the intermediate plate and the upper plate member and then discharged to the outside of the cooktop case, .
The method of claim 12,
And the second fan is a box fan.
The method of claim 11,
Wherein the first air outlet is located closer to the air inlet of the duct than the second air outlet.
The method according to claim 1,
And a cooking device provided with an oven at a lower portion of the cooktop.

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