KR101533851B1 - Cooking apparatus - Google Patents

Abstract

The present invention relates to a cooking appliance. A cooking apparatus of the present invention comprises: a cavity forming a cooking chamber in which food is cooked and in which a plurality of fastening holes are formed; A steam generator coupled to the cavity and generating steam; And a plurality of coupling members coupling the steam generator to the cavity, wherein at least one coupling hole of the plurality of coupling holes is formed with a first diameter, and the remaining coupling holes are formed with a diameter smaller than the first diameter.

Cooking equipment

Description

[0001]

The present invention relates to a cooking appliance.

Generally, a cooking device is a device that cooks food using a heating source. The heating source for heating the food is a heater or a magnetron. In recent years, steam is used as the heating source.

It is an object of the present invention to provide a cooking apparatus which is capable of reducing abnormal noise caused by a difference in thermal expansion coefficient between constituent elements at a fastening site and increasing the stability of the structure.

According to one aspect of the present invention, there is provided a cooking apparatus comprising: a cavity defining a cooking cavity in which food is cooked and having a plurality of fastening holes; A steam generator coupled to the cavity and generating steam; And a plurality of coupling members coupling the steam generator to the cavity, wherein at least one coupling hole of the plurality of coupling holes is formed with a first diameter, and the remaining coupling holes are formed with a diameter smaller than the first diameter.

According to the present invention, it is possible to prevent abnormal noise when the steam generator and the cavity are heated by releasing the constraint on a part of the joint between the steam generator and the cavity, have.

Further, there is an advantage that a desired effect can be obtained at a low cost by simply changing the structure of a part of the fastening portions without adding a separate structure.

Hereinafter, the present embodiment will be described in detail.

FIG. 1 is a perspective view of a cooking device according to a first embodiment of the present invention, and FIG. 2 is a schematic view of a cooking device system according to a first embodiment of the present invention.

1 and 2, a cooking apparatus 1 according to the present invention includes a main body 10 in which a cooking chamber 20 for cooking food is formed, and a door (not shown) for selectively opening and closing the cooking chamber 20. [ And a storage unit 30 for storing steam water.

The food is heated and cooked in the cooking chamber 20 at a high temperature. The food is heated by heat generated from a heater (not shown) provided in the cooking chamber 20 or heated by heat of steam supplied to the cooking chamber 20.

The steam water storage part 30 is attached to or detached from the cooking appliance 10 through an opening 13 formed at one side of the main body 10. The steam water storage part 30 is installed on one side of the front surface of the main body 10 which overlaps the back surface of the door (not shown) in a state where the door (not shown) shields the cooking chamber 20 And can be prevented from being exposed to the outside of the main body 10.

The cooking device 1 according to the present embodiment includes a steam generator 40 for generating steam and a water supply pump 40 for pumping the steam water stored in the steam water storage 30 to the steam generator 40 And a drain pump (52) for moving the residual water of the steam generator (40) to the steam water storage part (30).

The steam generator 40 is coupled to the cavity 21 forming the cooking chamber 20. A portion of the cavity 21 to which the steam generator 40 is coupled may be referred to as a steam generator installation portion.

The water supply pump 50, the steam water storage 30, the water supply pump 50 and the steam generator 40 are connected by a supply pipe 51, The water storage unit 30 and the drain pump 52 and the steam generator 40 are connected to each other by a drain pipe 53.

FIG. 3 is an assembled view of a steam generator according to a first embodiment of the present invention coupled to a cavity by a fastening member, FIG. 4 is a cross-sectional view taken along AA of FIG. 3 in a state where the steam generator is coupled to a cavity And FIG. 5 is a cross-sectional view taken along the line BB of FIG. 3 in a state where the steam generator is coupled to the cavity.

3 to 5, the steam generator 40 includes a heating source 41 for generating steam, a body 42 for storing and heating steam in the steam generator 40, A coupling part 43a for coupling the steam generator 40 to the cavity 21 and a discharge part 44 for spraying the steam generated from the steam generator 40 are included.

As the heating source 41, for example, a heater or an ultrasonic device may be used.

The body part 42 may store the steam water supplied from the steam water storage part 30. The body portion 42 may be formed of a material different from that of the cavity 21.

One or more discharge holes may be formed in the discharge portion 44. In FIG. 2, three discharge holes are shown as an example. It is noted that the number of the discharge holes is not limited.

The fastening portions 43a, 43b and 43c are formed on one side of the body portion 42. [ One side of the body portion 42 may be a surface facing the cavity 21, for example.

The fastening portions 43a, 43b, and 43c may be fastened to the fastening members 70 penetrating the cavities. That is, the fastening member 70 passes through the cavity 21 from the inside of the cavity 21 and is fastened to the fastening portions 43a, 43b, and 43c. The fastening member 70 may be a screw, for example.

The fastening portions 43a, 43b, and 43c project outward from the body portion 42. [

(Not shown) may be formed in a spiral shape on the inner circumferential surfaces of the fastening portions 43a, 43b and 43c in order to firmly engage with the fastening member 70. [

The cavity 21 is formed with fastening holes 22a, 22b, and 22c through which the fastening member 70 passes. The fastening member 70 penetrates through the fastening holes 22a, 22b and 22c from the inside of the cavity 21. Alternatively, the fastening member 70 may be provided on both sides of the body portion 42, 43b and 43c are formed in the cavity 21 so that the fastening member 70 penetrates the fastening portions 43a, 43b and 43c from the outside of the cavity 21 and then passes through the fastening holes 22a , 22b, 22c. .

An inlet hole 23 for introducing the steam discharged from the discharge portion 44 into the cooking chamber 20 is formed on the surface of the cavity 21 on which the fastening holes 22a, 22b and 22c are formed . Therefore, the steam generated in the steam generator 40 flows into the cooking chamber 20 through the inlet hole 23.

The inlet holes 23 are provided in the same number as the outlet holes. In Fig. 3, three inlet holes 23 are shown.

In this embodiment, the fastening portions 43a, 43b, and 43c include the first fastening portions 43a, the second fastening portions 43b, and the third fastening portions 43c. In the present embodiment, three fastening portions are provided, but the number of the fastening portions is not limited.

The third fastening portions 43c are located below the first and second fastening portions 43a and 43b. The first fastening part 43a and the second fastening part 43b are formed at the same height from the bottom surface of the body part 42. The first fastening portion 43a and the second fastening portion 43b may be formed at the same distance from one side of the body portion.

The distance between the third fastening portion 43c and the first fastening portion 43a and the distance between the third fastening portion 43c and the second fastening portion 43b are set to be the same as the first fastening portions 43a, Is larger than the distance of the second fastening portion 43b.

The fastening holes 22a, 22b, 22c are formed at corresponding positions and corresponding positions with the fastening portions 43a, 43b, 43c. The fastening holes 22a, 22b and 22c include a first fastening hole 22a, a second fastening hole 22b and a third fastening hole 22c.

The distance between the third fastening hole 22c and the first fastening hole 22a and the distance between the third fastening hole 22c and the second fastening hole 22b are larger than the distance between the first fastening hole 22a and the second fastening hole 22b, Is larger than the distance of the second fastening hole 22b.

The fastening member 70 includes a head part 71 and an insertion part 72 inserted into the fastening parts 43a, 43b and 43c.

The head portion 71 is configured such that a pressure is applied to the cavity 21 in a direction in which the coupling member 70 is engaged in a state where the insertion portion 72 is engaged with the coupling portions 43a, 43b, .

The inserting portion 72 is formed with a thread to be fastened to the fastening portions 43a, 43b and 43c.

3 to 5, the diameters (d1: "second diameter") of the first fastening hole 22a and the second fastening hole 22b are set to be the same as the diameters (d2). 3, the movement of the fastening member 70 and the body portion 42 in the X-axis direction and the Y-axis direction is restricted.

Since the insertion part 72 of the fastening member 70 and the first fastening part 43a and the second fastening part 43b are screwed to each other, the fastening member 70 and the body part 42 are screw- The movement in the Z-axis direction is restricted as viewed in Fig.

The diameter d3 of the third fastening hole 22c may be larger than the diameter d2 of the insertion portion 72 of the fastening member 70. [ That is, a predetermined interval is formed between the inner circumferential surfaces of the insertion portion 72 and the third fastening hole 22c.

Therefore, the fastening member 70 and the body portion 42 can move in the X and Y directions as viewed in FIG. Since the inserting portion 72 of the fastening member 70 and the third fastening portion 43c are screwed together, the fastening member 70 and the body portion 42 are inserted into the inserting portion 72, The movement in the direction (z-axis direction) in which the second fastening hole 22c is inserted into the third fastening hole 22c is limited.

In this embodiment, the diameter of one fastening hole is formed larger than that of the other fastening holes. Alternatively, the diameter of the fastening holes may be larger than the diameter of the other fastening holes.

As described above, the reason why any one of the fastening portions can move in the X-axis direction and the Y-axis direction is as follows.

The heating source 41 of the steam generator 40 generates heat in order to inject the steam into the cooking chamber 20. As a result, the temperature of the cavity 21 coupled with the steam generator 40 as well as the steam generator 40 is increased and thermal expansion is caused by the temperature rise. That is, the length and volume of the steam generator 40 and the cavity 21 are expanded.

Since the material of the body part 42 is different from that of the cavity 21, the coefficient of thermal expansion of the steam generator 40 and the cavity 21 are different from each other. Therefore, when the steam generator 40 and the cavity 21 are thermally expanded, the degree of expansion of the steam generator 40 and the cavity 21 becomes different due to thermal expansion.

Since the expansion degree of the steam generator 40 and the cavity 21 are different from each other, if the movement of the steam generator 40 is restricted, a concentrated stress occurs in the coupling part or the coupling member. The concentrated stress is a stress acting in the X-axis direction or the Y-axis direction, so that shear stress can be obtained.

Accordingly, in the present embodiment, at least one of the plurality of fastening portions is allowed to move, thereby preventing stress concentration at the movable fastening portion.

The concentrated stress due to the difference in the coefficient of thermal expansion is generated in the fastened portion in which the motion is restrained. Therefore, when the movement of the fastening portion having the greatest distance between the fastening portions is restrained, the area where the stress concentrates is larger than that of restricting the fastening portions close to each other. Therefore, in this embodiment, the fastening portion (the third fastening portion in this embodiment) having the greatest distance between the fastening portions can be moved.

According to the present invention, it is possible to move some coupling parts among a plurality of coupling parts where the steam generator (40) and the cavity (21) are coupled, thereby reducing abnormal noise according to the difference in thermal expansion rate.

Also, it is possible to prevent a screw loosening phenomenon due to a difference in thermal expansion coefficient between the steam generator (40) and the cavity (21), thereby improving the safety of the structure.

FIG. 6 is an assembled view of a steam generator according to a second embodiment of the present invention, which is coupled to a cavity by a fastening member, and FIG. 7 is a cross-sectional view taken along CC of FIG. 6 in a state where the steam generator is coupled to a cavity .

The present embodiment is the same as the first embodiment in other portions, but differs in the manner in which the fastening members are fastened to the fastening portions. Hereinafter, only characteristic portions of the present embodiment will be described, and the same portions as those of the first embodiment will be referred to as the first embodiment.

6 and 7, the fastening portions 63a, 63b, 63c and 63d of the steam generator 60 according to the present embodiment are formed on the surface of the steam generator 60 facing the cavity 81 Are formed in a line. Although the number of the fastening portions 63a, 63b, 63c, and 63d is four in the present embodiment, the number of fastening portions is not limited thereto.

A plurality of fastening holes 82a, 82b, 82c, and 82d are formed in the cavity 81 at positions and positions corresponding to the fastening portions 63a, 63b, 63c, and 63d.

In the case of the fastening portions 63a and 63d located at at least one of the fastening portions 63a, 63b, 63c and 63d, the movement in the X and Y axis directions in Fig. 6 is not restricted.

That is, the diameter (d5: "first diameter") of the fastening holes 82a, 82d located at at least one of the plurality of fastening holes is the diameter of the fastening holes 82b, 82c (d4: "second diameter"). In the present embodiment, for example, the diameter d5 of the fastening holes 82a and 82d at both ends is formed to be larger than the diameter d2 of the insertion portion 72. [

Therefore, the fastening portions 63a and 63d at both ends of the fastening portions 63a, 63b, 63c, and 63d are allowed to move in the X-axis and Y-axis directions in FIG.

The diameter d4 of the fastening holes 82b and 82c located between the fastening holes 82a and 82d located at both ends is substantially the same as the diameter d2 of the inserting portion 72. [

Therefore, in the case of the fastening portions 63b and 63c located between the fastening portions 63a and 63d located at both ends, movement in the X-axis and Y-axis directions in FIG. 6 is restricted.

As such, when the fastening portions are arranged in a row, at least one of the fastening portions located at one end is allowed to move because the greatest stress is applied to the fastening portions located at both ends.

1 is a perspective view of a cooking apparatus according to a first embodiment of the present invention;

2 is a schematic diagram of a cooking device system according to a first embodiment of the present invention;

FIG. 3 is an assembled view of a steam generator according to a first embodiment of the present invention, which is coupled to a cavity by a fastening member. FIG.

Fig. 4 is a cross-sectional view taken along line A-A of Fig. 3 with the steam generator coupled to the cavity; Fig.

Fig. 5 is a cross-sectional view taken along line B-B in Fig. 3 with the steam generator coupled to the cavity; Fig.

FIG. 6 is an assembled view of a steam generator according to a second embodiment of the present invention, which is coupled to a cavity by a fastening member. FIG.

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6 with the steam generator coupled to the cavity;

Claims (4)

A body on which a cooking chamber is formed; A steam generator for generating steam; A steam generator installed in the main body and to which the steam generator is fixed; A discharge part formed in the steam generator and through which steam is sprayed; A plurality of fastening portions formed on the steam generator; An inflow hole formed in the steam generator installation part and communicating with the discharge part; A plurality of fastening holes formed in the steam generator mounting portion and communicating with the plurality of fastening portions; And And a plurality of fastening members passing through the respective fastening holes and the fastening portions in order to couple the steam generator to the steam generator mounting portion, Wherein the fastening holes disposed at the farthest positions from the plurality of fastening holes with respect to the inflow hole are formed with a first diameter and the remaining fastening holes are formed with a diameter smaller than the first diameter. The method according to claim 1, Each of the fastening members, The head, And an insertion portion that sequentially passes through the respective fastening holes and the fastening portions, And the diameter of the insertion portion is smaller than the first diameter. The method according to claim 1, The remaining fastening holes having a second diameter, Wherein the distance between the fastening hole having the first diameter and the fastening hole having the second diameter is larger than the distance between the fastening holes having the second diameter. The method according to claim 1, Wherein the plurality of fastening holes are arranged in a line in the steam generator installation portion, And fastening holes disposed at both ends of the plurality of fastening holes are formed with the first diameter.

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