Baking apparatus and control method for the baking apparatus

Abstract

The present invention relates to a baking device and a control method thereof. The baking device according to the present invention includes a baking chamber part including a cylindrical baking chamber and a rotating stirring part which rotates around a stirring shaft formed in a vertical direction, a housing unit which surrounds the baking chamber part, a heat source part including a first heat source part which provides radiation heat to the baking chamber part, and a radiation temperature measuring unit which measures a temperature of the baking chamber or an object and a chamber exterior space temperature of a chamber exterior space between the housing unit and the baking chamber part based on infrared rays emitted from an inner surface of the baking chamber part or a surface of the object heated by the heat source part, wherein the baking device performs a preheating operation until the chamber interior temperature of the baking chamber and the chamber exterior space temperature reach a preset reference chamber interior temperature and a reference chamber exterior space temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to a roasting apparatus and a control method thereof, and more particularly, to a roasting apparatus that stirs an object in a roasting chamber and roasts the same and a control method thereof. BACKGROUND

[0002] Recently, a grain roaster or a coffee roaster that can simply and automatically roast grains such as coffee beans in a specialized coffee shop or at home is being introduced.

[0003] Such a coffee roaster automatically roasts coffee beans by setting a roasting operation mode using a temperature sensor and a microcomputer.

[0004] A conventional commercial automatic coffee roaster mainly adopts a stirring method of rotating a drum in a horizontal direction and rotating the drum in a reverse direction, thereby uniformly stirring coffee beans (Patent No. 342091, Patent No. 369539, Patent No. 463341, Patent No. 8041061, Patent No. 887985, Patent No. 963695, Patent Laid-Open No. 2009-30655, Patent Laid-Open No. 2010-38802).

[0005] However, in the case of the conventional automatic coffee roaster, a method of heating a horizontally rotating drum using only one heat source such as gas combustion is provided, thereby having a problem in that a lot of time is required for preheating and various roasting environments cannot be dealt with. SUMMARY

[0006] To this end, the present application provides a roasting apparatus that reduces a roasting preheating operation time and further improves productivity and a control method thereof.

[0007] Also, the present application provides a roasting apparatus that more effectively measures a roasting progress of an object, thereby enabling a user to perform desired roasting and a control method thereof.

[0008] Also, a roasting apparatus that can improve roasting quality and a control method thereof are provided.

[0009] A roasting apparatus according to an aspect of an embodiment of the present application, as a roasting apparatus of a heating object, includes: a roasting chamber section including a cylindrical roasting chamber and a rotating stirring section, the roasting chamber stirring an object inside and extending in an up-and-down direction to form the rotating stirring section to rotate for stirring the object accommodated in the roasting chamber, wherein the rotating stirring section rotates around a stirring shaft formed in a vertical direction; a housing unit surrounding the roasting chamber section; a heat source section including a first heat source section to provide radiant heat to the roasting chamber section; and a radiant temperature measurement unit to measure a temperature of the roasting chamber or the object and a chamber exterior space temperature of a chamber exterior space between the housing unit and the roasting chamber section based on infrared rays emitted from an inner surface of the roasting chamber section or a surface of the object heated by the heat source section, wherein the roasting apparatus performs a preheating operation until a chamber interior temperature of the roasting chamber and the chamber exterior space temperature reach a reference chamber interior temperature and a reference chamber exterior space temperature set in advance.

[0010] Also, the radiant temperature measurement unit can be provided in an upper unit arranged at an upper side of the roasting chamber and can face an inner space side of the roasting chamber, and the radiant temperature measurement unit can include: a sensing section to measure a temperature of an object based on infrared rays and to face the roasting chamber; an exterior space temperature measurement unit to measure a chamber exterior space temperature of the chamber exterior space; and a substrate on which the sensing section and the exterior space temperature measurement unit are mounted.

[0011] Also, the reference chamber exterior space temperature can be formed in a range of 55 degrees Celsius to 90 degrees Celsius.

[0012] Also, the measured temperature (T measure ) of the roasting chamber or the object measured by the radiant temperature measurement unit can be corrected based on the chamber exterior space temperature (T outside ), and thus an actual temperature of the roasting chamber or the object can be calculated.

[0013] Also, the upper unit can be formed with a measurement hole formed therethrough to communicate with the baking chamber, and the radiation temperature measurement unit can further include a measurement unit body disposed on an upper surface of the upper unit and formed with a body-side through hole to communicate with the baking chamber, and a filter portion disposed in front of the sensing portion and passing light having a pre-set wavelength band, wherein the substrate is disposed on one side of the measurement unit body, the body-side through hole can communicate with the measurement hole, and the sensing portion can be located in the body-side through hole, one surface of the filter portion can face the sensing portion, the other surface of the filter portion can directly face the baking chamber, and the emissivity of the filter portion can vary according to temperature.

[0014] Also, the actual temperature (T real ) can be calculated in the measurement temperature (T measure ) considering a change in emissivity of the filter portion based on the external temperature (T outside ), the actual temperature (T real ) and the measurement temperature (T measure ) satisfy the following relational expression:

[0015]

[0016] T real,k is a corrected actual temperature of an object (in terms of absolute temperature);

[0017] T measure,k is a measurement temperature of an object measured by the sensing portion (in terms of absolute temperature);

[0018] T outside,c is an external temperature of the baking chamber (in terms of Celsius);

[0019] T outside,k is an external temperature of the baking chamber (in terms of absolute temperature);

[0020] E0 is the emissivity of the filter portion at 0 degrees Celsius;

[0021] e is the change amount of the emissivity of the filter portion per 1 degree of absolute temperature (or 1 degree of Celsius).

[0022] Also, the first heat source portion of the heat source portion can be provided to the upper unit in a state of being disposed inside the baking chamber, and the upper unit can be formed with a through hole to leak a part of light emitted from the first heat source portion to the outside space side of the chamber.

[0023] The heat source portion can further include a second heat source portion providing convection heat to the roasting chamber, and including an inflow pipe guiding an air flow to a side of the roasting chamber portion, and a heating unit provided to the inflow pipe; and a third heat source portion surrounding at least a portion of an outer circumferential surface of the roasting chamber portion, and providing conduction heat to the roasting chamber side through the roasting chamber portion.

[0024] A roasting apparatus according to another aspect of embodiments of the present application, as a roasting apparatus that heats an object, includes a roasting chamber portion including a cylindrical roasting chamber that internally stirs an object and extends in an up-and-down direction, and a rotating stirring portion that rotates in order to stir the object accommodated in the roasting chamber, wherein the rotating stirring portion rotates around a stirring shaft formed in a vertical direction; a heat source portion that supplies heat to the roasting chamber portion, and includes a first heat source portion that provides hot air to the roasting chamber portion to provide convection heat to the inside of the roasting chamber; and a radiation temperature measurement unit that measures a temperature of the roasting chamber or the object based on infrared rays emitted from an inner surface of the roasting chamber portion or a surface of the object heated by the heat source portion.

[0025] Further, the first heat source portion can include a flow pipe that flows air, and a heating unit disposed at one side of the flow pipe and heating the flowing air, wherein the radiation temperature measurement unit can be provided to an upper unit disposed at an upper side of the roasting chamber and face an inner space side of the roasting chamber, a measurement hole can be formed in the upper unit to communicate with the roasting chamber, the radiation temperature measurement unit can include a sensing portion that measures a temperature of an object based on infrared rays, a measurement unit body disposed at an upper surface of the upper unit and formed with a body-side through hole that communicates with the roasting chamber, a substrate disposed at one side of the measurement unit body and installed with the sensing portion, and a filter portion disposed in front of the sensing portion and passing light having a pre-set wavelength band, the body-side through hole can communicate with the measurement hole, the sensing portion can be located in the body-side through hole, one surface of the filter portion can face the sensing portion, the other surface of the filter portion can directly face the roasting chamber, a ventilation hole can be formed in the measurement unit body in a direction crossing a direction in which the body-side through hole is formed, the body-side through hole and the ventilation hole can cross each other, and the roasting apparatus can further include a ventilation portion that communicates at one side with the flow pipe and at the other side with the ventilation hole, air flowing to the other surface side of the filter portion through the ventilation portion can flow to the other surface side of the filter portion.

[0026] Also, the ventilation portion can include a tube unit communicating with one side of the flow tube, and a plug unit connected with one side of the tube unit and the other side of the ventilation hole, the plug unit can be formed in a curved shape, and a plug portion inserted into the ventilation hole can be formed at the other side of the plug unit.

[0027] Also, the ventilation hole can be formed to pass through one side and the other side of the measurement unit main body, and a shielding unit for shielding the ventilation hole from the outside can be provided at the other side of the ventilation hole.

[0028] Also, a guide portion in a cylindrical shape surrounding the measurement hole and protruding downward can be formed at the lower surface of the upper unit, and the guide portion can be aligned with the measurement hole.

[0029] Also, a measurement temperature (T outside ) of the baking chamber or the object measured by the radiation temperature measurement unit can be corrected based on a temperature (T measure ) of the outside space of the chamber, and thus an actual temperature of the baking chamber or the object can be calculated, the radiation temperature measurement unit can be provided at an upper unit disposed at the upper side of the baking chamber and facing the inside space side of the baking chamber, a measurement hole formed to pass through and communicate with the baking chamber can be formed at the upper unit, the radiation temperature measurement unit can include a sensing portion measuring the temperature of the object based on infrared rays, a measurement unit main body disposed at the upper surface of the upper unit and formed with a main body side through hole communicating with the baking chamber, a substrate disposed at one side of the measurement unit main body and installed with the sensing portion, and a filter portion disposed in front of the sensing portion and passing light having a pre-set wavelength band, wherein the main body side through hole can communicate with the measurement hole, the sensing portion can be located in the main body side through hole, one surface of the filter portion can face the sensing portion, the other surface of the filter portion can directly face the baking chamber, and the emissivity of the filter portion can vary according to temperature.

[0030] Also, the substrate can include an outside space temperature measurement unit disposed at the outside space of the baking chamber and measuring the temperature of the outside space, wherein the actual temperature (T real ) is calculated in the measurement temperature (T measure ) considering the change in the emissivity of the filter portion based on the outside temperature (T outside ), and the actual temperature (T real ) and the measurement temperature (T measure ) satisfy the following relational expression:

[0031]

[0032] T real,k is a corrected actual temperature of an object (based on absolute temperature) ;

[0033] T measure,k is a measured temperature of an object measured by a sensing portion (based on absolute temperature) ;

[0034] T outside,c is an external temperature of a baking chamber (based on Celsius temperature) ;

[0035] T outside,k is an external temperature of a baking chamber (based on absolute temperature) ;

[0036] E0 is an emissivity of a filter portion at 0 degrees Celsius;

[0037] e is a change amount of emissivity per 1 degree of absolute temperature (or 1 degree of Celsius) of the filter portion.

[0038] Also, a housing forming an appearance can be further included, and the external space can be arranged between the housing and the baking chamber.

[0039] A control method of a baking device according to still another aspect of an embodiment of the present application, the baking device including a baking chamber portion in which a baking chamber is formed, and a housing unit surrounding the baking chamber portion, the control method of the baking device including a baking preheating operation start step of performing preheating on the baking chamber, a preheating condition satisfaction or non-satisfaction judgment step of judging whether a preheating state of the baking chamber satisfies a preheating condition, and a baking operation start step of starting a baking operation, wherein the preheating condition is temperature profile information for judging whether a measured temperature (T measure ) of the baking chamber reaches a reference internal temperature and whether a chamber external space temperature (T outside ) of a chamber external space formed between the baking chamber and the housing unit reaches a reference chamber external space temperature.

[0040] Also, the reference chamber external space temperature can be formed in a range of 55 degrees Celsius to 90 degrees Celsius.

[0041] Also, an additional baking performance or non-performance judgment step of judging whether additional baking is performed can be further included, and in a case where it is judged that additional baking is performed in the additional baking performance or non-performance judgment step, the baking preheating operation start step and the baking operation start step can be continuously performed according to the pre-set baking profile information.

[0042] According to the proposed embodiments, a baking apparatus and a control method thereof can be provided, which can reduce a baking preheating operation time and thus improve productivity.

[0043] Also, a baking process of an object can be more effectively measured, so that a user can perform desired baking.

[0044] Also, there is an advantage in that baking quality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a view illustrating a baking apparatus according to an embodiment of the present application.

[0046] Figure 2 is a view illustrating an internal configuration of the baking apparatus of Figure 1 .

[0047] Figure 3 is a view illustrating a configuration of a baking chamber part of the baking apparatus of Figure 1 .

[0048] Figure 4 is a view illustrating a state of the baking chamber part of Figure 3 , viewed from an upper side.

[0049] Figure 5 is a view illustrating a state in which a third heat source part is removed in the baking chamber part of Figure 3 .

[0050] Figure 6 is a view illustrating an upper unit of the baking chamber part of Figure 3 .

[0051] Figure 7 is a view illustrating a cross section of the baking chamber part of Figure 3 .

[0052] Figure 8 is a view illustrating a state of a first temperature sensing unit of the baking apparatus of Figure 1 .

[0053] Figure 9 is a view illustrating a cross section of the first temperature sensing unit of Figure 8 .

[0054] Figure 10 is a view illustrating a control method of the baking apparatus of Figure 1 .

[0055] Figure 11 is a view illustrating an internal configuration of a baking apparatus according to another embodiment of the present application.

[0056] Figure 12 is a view illustrating a configuration of the baking apparatus of Figure 11a cross section of the radiation temperature measuring unit.

[0057] Figure 13 is a view showing Figure 11 a configuration of the radiation temperature measuring unit.

[0058] Figure 14 is a view showing an internal configuration of a baking apparatus according to a further embodiment of the present application.

[0059] Figure 15 is a view showing Figure 14 a control method of the baking apparatus. DETAILED DESCRIPTION

[0060] The advantages and features of the present application and a method of achieving the same can be ascertained from the embodiments to be described below in detail in conjunction with the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments disclosed below, which are merely provided so that the present application is complete and to fully convey the scope of the present application to those having ordinary knowledge in the technical field to which the present application pertains, and the present application is defined only by the scope of the claims. Figure 1

[0061] Although the terms of first, second, and the like are used to describe various constituent elements, the constituent elements are obviously not limited to these terms. The terms are used only to distinguish one constituent element from another. Therefore, the first constituent element mentioned below can obviously be the second constituent element within the technical idea of the present application.

[0062] In the entire specification, the same reference numerals refer to the same constituent elements.

[0063] Each feature of various embodiments of the present application can be partially or wholly combined or combined with each other, and various linkages and drives can be technically achieved, and each embodiment can be independently implemented with respect to each other, and can also be implemented together in a related relationship.

[0064] In addition, potential effects expected by technical features of the present application not specifically mentioned in the specification of the present application should be considered the same as those described in the specification, and the embodiments are provided to make those having ordinary knowledge in the art more completely understand the present application, and the contents shown in the drawings can be exaggerated compared to the actual implementation of the invention, and the detailed description of the configuration judged to be unnecessary to obscure the purpose of the present application is omitted or briefly described.

[0065] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0066] Figure 1 is a view showing a baking apparatus according to an embodiment of the present application,​Figure 2 is a diagram showing a state in which an internal configuration of the roasting apparatus of Figure 1 is projected. Figure 3 is a diagram showing a state in which an internal configuration of the roasting apparatus of Figure 1 is projected. Figure 4 is a diagram showing a configuration of a roasting chamber part of the roasting apparatus of Figure 3 is a diagram showing a state of the roasting chamber part of Figure 5 is a diagram showing a state in which a third heat source part is removed in the roasting chamber part of Figure 3 is a diagram showing a state in which a third heat source part is removed in the roasting chamber part of Figure 6 is a diagram showing an upper unit of the roasting chamber part of Figure 3 is a diagram showing an upper unit of the roasting chamber part of Figure 7 is a diagram showing a cross section of the roasting chamber part of Figure 3 is a diagram showing a cross section of the roasting chamber part of Figure 2 is shown in the following state: in a state in which a case 190 forming an outer shape of the roasting apparatus 1 is provided, the case 190 is made to be semi-transparent so that an internal configuration of the roasting apparatus 1 is projected toward the outside.

[0067] Referring to Figures 1 to 7 , the roasting apparatus 1 according to an embodiment of the present application is a device that roasts an object such as coffee beans, etc. by heating the object, and includes a roasting chamber part 100 that receives and roasts the object, an operation panel part 200 that displays information regarding a roasting condition of the object, etc. and receives an operation signal from a user, an object storage part 400 that stores the object whose roasting is completed in the roasting chamber part 100, and heat source parts 310, 320, 330 that provide heat to the roasting chamber part 100, wherein the roasting chamber part 100 is surrounded by a case 190 formed of a metal material.

[0068] In more detail, the roasting chamber part 100 includes a roasting chamber 120 formed in a cylindrical shape, which stirs the object in an internal space 121 and extends in an up-down direction, a rotary stirring part 180 including a stirring wing unit 181 that rotates in order to stir the object received in the roasting chamber 120, an upper unit 110 arranged at an upper side of the roasting chamber 120 and formed in a circular shape, a lower unit 130 arranged at a lower side of the roasting chamber 120 and formed in a circular shape, and a discharge unit 150 that communicates with the internal space 121 of the roasting chamber 120 and is selectively opened to discharge the object whose roasting is completed in the internal space 121 of the roasting chamber 120 to the outside.

[0069] The baking chamber 120 can be formed in a cylindrical shape extending in a vertical direction, and a fixed wing 122 for smoothly stirring the object can be formed on an inner surface of the baking chamber 120. The fixed wing 122 is protruded on the inner surface of the baking chamber 120, and the fixed wing 122 is formed in a shape in which a protrusion height thereof is gradually increased from a lower portion to an upper portion of the baking chamber 120.

[0070] The discharge unit 150 can include a door portion (not shown) that is opened or closed by an operation signal of a control portion (not shown), and a lever portion (not shown) for forcibly opening the door portion by a user in an emergency situation regardless of a control signal of the control portion. The discharge unit 150 is formed to be inclined toward the object storage portion 400, so that the baked object can be supplied to the object storage portion 400 side when the door portion of the discharge unit 150 is opened.

[0071] Also, the stirring wing unit 181 of the rotary stirring portion 180 is rotated about a stirring shaft formed in a vertical direction. Accordingly, the baking chamber portion 100 according to the present embodiment has an advantage in that the baking of the object can be more effectively performed, and the baking apparatus can be more effectively arranged, in a state in which the baking chamber 120 is formed to extend in a vertical direction, and the stirring wing unit 181 of the rotary stirring portion 180 is rotated about the stirring shaft formed in a vertical direction.

[0072] In addition, the heat source portions 310, 320, and 330 include a first heat source portion 310 that provides hot air flow to the baking chamber 120, thereby providing convection heat to the inside of the baking chamber 120, a second heat source portion 330 that contacts a surface of the baking chamber 120 and provides conduction heat to the baking chamber 120 in a conduction manner, and a third heat source portion 320 that provides radiation heat to the inside of the baking chamber 120.

[0073] The first heat source portion 310 includes a flow pipe 311 in which air flows, and a heating unit 312 that is disposed on one side of the flow pipe 311 to heat the flowing air. The flow pipe 311 is connected to a blower unit 313 for providing air, and the heating unit 312 and one side of the flow pipe 311 are connected to the upper portion unit 110. For example, in the heating unit 312, a plurality of heating elements are arranged in a mesh or coil shape, and air is heated by the heating elements.

[0074] The second heat source portion 330 can include a second heat source portion body that surrounds an outer circumferential surface of the baking chamber 120 in a state of contacting the outer circumferential surface, and the second heat source portion body can be a band heater formed of a ceramic material.

[0075] In addition, the baking chamber 120 is formed with at least one baking chamber side through hole which communicates with the outside, and the second heat source portion main body is formed with a second heat source portion main body side through hole which is formed at a position corresponding to the baking chamber side through hole.

[0076] Illustratively, the baking apparatus 1 further includes a sample taking unit 161 which is capable of taking a sample during a baking process, and a window unit 162 which is capable of confirming the baking process inside the baking chamber 120 by vision, wherein the sample taking unit 161 and the window unit 162 are respectively provided to the baking chamber side through hole and the second heat source portion main body side through hole. In addition, an air discharge port 163 which communicates with the internal space of the baking chamber 120 is formed at the upper side of the baking chamber 120, and the second heat source portion 330 is not disposed at the side of the air discharge port 163. That is, the second heat source portion 330 is provided only up to a predetermined height of the outer circumferential surface of the baking chamber 120, and the height up to which the second heat source portion 330 is provided can be defined as a storage limit line of an object which is stored in the internal space 121 of the baking chamber 120.

[0077] During the baking process, dust (crust, etc.) generated from the object is delivered to the dust collecting unit 600 through the air discharge port 163, the dust collecting unit 600 discharges air to the outside, and stores the dust in an internal dust storage (not shown).

[0078] The third heat source portion 320 can include a lamp unit 321 which emits radiant heat, and can be provided to the upper unit 110 to provide radiant heat to the internal space 121 of the baking chamber 120. Illustratively, the lamp unit 321 can be a halogen lamp.

[0079] In addition, the upper unit 110 includes an upper unit body 111 formed in a circular shape, and a first heat source arrangement hole 113 in which a heating unit 312 of a first heat source part 310 is fixed to flow heated air to an inner space 121 of the roasting chamber 120, a third heat source arrangement hole 114 in which a luminaire unit 321 of a third heat source part 320 is fixed to transfer radiant heat emitted from the luminaire unit 321 to the inner space 121 of the roasting chamber 120, and an object supply hole 112 connected to the hopper unit 170 of the roasting apparatus 1 to allow an object to be put into the inner space 121 of the roasting chamber 120 are formed in the upper unit body 111. In addition, a diffusion part 118 in which a diameter is increased toward the lower side is formed in the lower side of the upper unit 110 to guide hot air supplied from the first heat source part 310. The diffusion part 118 can be formed to extend from the lower side of the upper unit to the side of the rotary stirring part 180 arranged in the lower side of the roasting chamber 120, and a recessed groove (not shown) for avoiding interference with the diffusion part 118 can be formed in the stirring wing unit 181 of the rotary stirring part 180.

[0080] At this time, the luminaire unit 331 of the third heat source part 320 and the third heat source arrangement hole 114 are equipped as a pair, and the first heat source arrangement hole 113 is arranged between the pair of third heat source arrangement holes 114. In addition, the first heat source arrangement hole 113 arranged in the center of the upper unit body 111 is formed in a circular shape, and the third heat source arrangement hole 114 is formed in a rectangular shape. In addition, the third heat source guide part 119 surrounding the third heat source arrangement hole 114 and extending downward is formed in the upper unit body 111 according to the present embodiment, and the cross section of the third heat source guide part 119 is formed in a rectangular shape corresponding to the third heat source arrangement hole 114. By the third heat source guide part 119, it is possible to prevent dust generated from the object during the roasting process of the roasting chamber 120 from contaminating the surface of the luminaire unit 321 of the third heat source 310.

[0081] In addition, the roasting apparatus 1 according to the present embodiment further includes a measurement unit 510, 520, 530 for measuring a heat source supply temperature of the heat source parts 310, 320, 330 provided to the roasting chamber 120.

[0082] The radiation temperature measuring unit 510 measures the radiation temperature of an object received in the internal space 121 of the baking chamber 120, and is disposed in the upper unit 110 disposed at the upper side of the baking chamber 120, and faces the internal space 120 side of the baking chamber 120. At this time, the measurement hole 115 which penetrates in the up-and-down direction is formed in the upper unit body 111. The measurement hole 115 is located at a position eccentric from the center of the upper unit body 111. The radiation temperature measuring unit 510 according to the present embodiment senses the temperature change of the object by sensing the infrared rays emitted from the surface of the object during the baking process. Accordingly, the baking apparatus 1 according to the embodiment of the present application has the following advantages: the temperature of the object can be accurately sensed, and the baking intended by the user can be accurately performed, compared to the existing baking apparatus which senses only the temperature change inside the baking chamber 120. Before the object is put into the inside of the baking chamber 120, the radiation temperature measuring unit 510 can sense the surface temperature of the lower unit 130 which forms the bottom surface of the baking chamber 120 during the preheating operation of the baking chamber 120.

[0083] In addition, various experiments were performed with respect to the setting position of the radiation temperature measuring unit 510 according to the present embodiment, and in the present embodiment, the direction from the upper unit 110 side toward the lower direction (i.e., the direction from the upper unit 110 side toward the internal space 121 of the baking chamber 120) which is the optimal setting position of the radiation temperature measuring unit 510 was set.

[0084]

Table 1

[0085] Set position Filter scratching Filter heat damage Measurement accuracy Upper baking chamber X X High Central baking chamber O X High Lower baking chamber O O Low

[0086] Hereinafter, the radiation temperature measuring unit 510 according to the present embodiment will be described in more detail.

[0087] Figure 8 is a view illustrating a state in which the first temperature sensing unit of the baking apparatus of Figure 1 is exploded, Figure 9 is a view illustrating a cross section of the first temperature sensing unit of Figure 8 .

[0088] Referring to Figure 8 and Figure 9The radiation temperature measuring unit 510 includes a sensing portion 511 for measuring temperature, a filter portion 514 disposed in front of the sensing portion 511 and passing light having a preset wavelength band, a first bracket 513 fixed to the upper unit body 111 of the baking chamber portion 100 and having a first through-hole 519 formed therein, a second bracket 521 fixed by contacting one side of the first bracket 513, having the sensing portion 511 inserted therein, and having a second through-hole 526 aligned with the first through-hole 519, and a substrate 512 having the sensing portion 511 mounted thereto and fixed to the other side of the second bracket 521.

[0089] At this time, the sensing portion 511, the first through-hole 519, the second through-hole 526, and the filter portion 514 are aligned with the measurement hole 115 of the upper unit 110, and the filter portion 514 is disposed between the first bracket 513 and the second bracket 521.

[0090] The sensing portion 511 senses infrared radiation from an object, is formed in a cylindrical shape, and extends in the same direction as the penetration direction of the measurement hole 115. The sensing portion 511 can be an infrared (IR) sensor, for example.

[0091] The filter portion 514 can be formed of a material that is transparent and less deformed by heat, such as glass, silica gel, or the like, and passes only light having an infrared wavelength band among light transmitted from the baking chamber 120 toward the sensing portion 511, for example.

[0092] In addition, the first bracket 513 includes a first bracket body 515 forming the outer shape of the first bracket 513 and having the first through-hole 519 disposed in the center thereof, and a pair of protruding portions 518 protruding upward from one side of the first bracket body 515, wherein a recessed space 517 is formed between the protruding portions 518, and a pair of first bracket fixing portions 516 through which the first fastening members 630 fastened to the upper unit body 111 protrude downward from the first bracket body 515 are formed.

[0093] The second bracket 521 includes a second bracket body 522 forming the outer shape of the second bracket 521, an insertion portion 523 formed at one side of the second bracket body 522 and inserted into the recessed space of the first bracket 513, a substrate seating surface 524 disposed on the upper surface of the second bracket 521 and having the substrate 512 seated thereon, and a pair of substrate fixing protrusions 525 protruding upward from the edges of the substrate seating surface 524 and allowing one side and the other side of the substrate 512 to be engaged.

[0094] The filter 514 is in close contact between the recessed space 517 of the first bracket 513 and the insertion portion 523 of the second bracket 521 in a state of being aligned with the first through-hole 519 disposed in the recessed space 517, and in a state in which the insertion portion 523 of the second bracket 521 is inserted into the recessed space 517 of the first bracket 513, the first bracket 513 and the second bracket 521 can be fixed to each other by the second fastening member 620 that integrally penetrates the protruding portion 518 of the first bracket 513 and the insertion portion 523 of the second bracket 521. That is, in a state in which the filter 514 seals the first through-hole 519, the first bracket 513 and the second bracket 521 are fixed to each other with the filter 514 interposed therebetween, so that foreign matter of the internal space 121 of the baking chamber 120 can be prevented from intruding toward the radiant temperature measurement unit 510 side and the outside through the first through-hole 519 that communicates with the measurement hole 115 of the baking chamber 120. In addition, at least one of between the filter 514 and the first bracket 513 and between the filter 514 and the second bracket 521 can be provided with an elastic member (not shown) of rubber or silicon material to firmly seal the space therebetween, and damage to the filter 514 can be suppressed.

[0095] In addition, in a state in which the sensing portion 511 is inserted into the second through-hole 526 of the second bracket 521 and the substrate 512 is seated on the seating surface 524, the third fastening member 610 penetrates the substrate 512 and is fixed to the fastening hole 527 of the second bracket 521, so that firm fixing of the substrate 512 to the second bracket 521 can be achieved.

[0096] The substrate 512 can be a PCB formed in a plate shape, in which a baking chamber outside temperature measurement element (not shown) capable of measuring a temperature of a position at which the substrate 512 is disposed, that is, an outside temperature of the baking chamber 120 adjacent to the baking chamber 120, is provided. That is, the radiant temperature measurement unit 510 according to the present embodiment can measure a radiant temperature of the internal space 121 of the baking chamber 120 and a temperature of an outside space of the baking chamber 120.

[0097] Also, a guide portion 116 of a cylindrical shape that surrounds the measurement hole 115 and is formed to protrude downward is formed at a lower portion of the upper unit 110, and the guide portion 116 is aligned with the measurement hole 115. That is, as the guide portion 116 that surrounds the measurement hole 115 is formed to protrude toward the internal space 121 of the baking chamber 120, so that dust and the like generated in the internal space 121 of the baking chamber 120 during a baking process can be suppressed from flowing toward the measurement hole 115 to contaminate a surface of the filter 514. The sensing portion 511 can irradiate light for measurement toward the internal space 121 of the baking chamber 120 through the measurement hole 115 surrounded by the guide portion 116, or can receive light emitted from the object.

[0098] Referring back Figures 3 to 7 , the measurement units 510, 520, 530, 540, 550 of the roasting apparatus 1 according to the present embodiment further include a convection temperature measurement unit 530 arranged on a flow path of the hot air supplied to the roasting chamber 120 by the first heat source part 310 to measure a convection temperature of the hot air, a conduction temperature measurement unit 540 having a conduction temperature measurement probe 541 arranged between the second heat source part 330 and an outer circumferential surface of the roasting chamber 120 to measure a conduction temperature of the second heat source part 330, and a contact temperature measurement unit 550 provided at a lower side of the roasting chamber 120 and directly contacting the object during a roasting process to measure a temperature of the object.

[0099] At this time, the convection temperature measurement probe 531 of the convection temperature measurement unit 530 can penetrate a side surface of the roasting chamber 120 and the diffuser part 118, and a tip portion of the convection temperature measurement probe 531 can be located at a lower flow side of the heating unit 312, so that a temperature of the hot air passing through the heating unit 312 can be measured.

[0100] Also, the conduction temperature measurement probe 541 of the conduction temperature measurement unit 530 is in contact with an inner surface of the second heat source part body 331 and the outer circumferential surface of the roasting chamber 120 in a state of being arranged between the second heat source part 330 and the roasting chamber 120. At this time, the conduction temperature measurement probe 541 of the conduction temperature measurement unit 540 is arranged at a position farthest from the roasting chamber side through hole and the second heat source part body side through hole. That is, since the roasting chamber side through hole and the second heat source part body side through hole are in communication with the outside, and a heating element of the second heat source part 330 is not arranged at the position, the conduction temperature measurement probe 541 of the conduction temperature measurement unit 540 is arranged at a position farthest from the roasting chamber side through hole and the second heat source part body side through hole, where a temperature is formed relatively high, so that the conduction temperature is measured based on the highest temperature.

[0101] Hereinafter, a control method of the roasting apparatus according to the present embodiment will be described, and a control method for a preheating operation will be described in detail.

[0102] Figure 10 is a view illustrating Figure 1 a control method of the roasting apparatus.

[0103] Referring to Figure 10Before the object is put into the roasting apparatus 1 according to the present embodiment to be roasted, a preheating operation of raising the temperature of the internal space 121 of the roasting chamber 120 to a desired level of preheating temperature is performed. The roasting apparatus 1 according to the present embodiment performs the preheating operation using the three heat sources in combination, thereby having the advantage that the temperature of the internal space 121 can be more rapidly raised to the desired preheating temperature. And, after the preheating operation is ended, the roasting apparatus 1 according to the present embodiment can control the three heat sources to be different from each other according to the user's orientation, thereby enabling roasting of the flavor desired by the user.

[0104] First, a first heat source preheating operation step (S110) of providing hot air from the first heat source portion to the internal space of the roasting chamber is performed.

[0105] Subsequently, in the first heat source preheating operation step (S110), when the measured first preheating temperature T1 is the first reference temperature T ref1 In the case (S120) that the measured first heat source temperature T1 is less than the first reference temperature T ref1 , a first heat source temperature maintaining operation step (S130) of maintaining the first preheating temperature T1 at the first reference temperature T

[0106] And, in the case (S120) that the measured first heat source temperature T1 is less than the first reference temperature T ref1 , the first heat source preheating operation step (S110) is repeatedly performed.

[0107] Subsequently, a second heat source preheating operation step (S140) of providing conductive heat from the second heat source portion 330 to the internal space 121 of the roasting chamber 120 is performed.

[0108] In the second heat source preheating operation step (S140), when the measured second preheating temperature T2 is the second reference temperature T ref2 , a second heat source temperature maintaining operation step (S160) of maintaining the second preheating temperature T2 at the second reference temperature T ref2 In the case (S150) that the measured second preheating temperature T2 is less than the second reference temperature T

[0109] And, in the case (S150) where the measured second preheat temperature T2 is less than the second reference temperature T ref2 , the second heat source preheat operation step (S140) is repeated.

[0110] Subsequently, a third heat source preheat operation step (S170) is performed in which the third heat source portion 320 supplies radiant heat to the internal space 121 of the baking chamber 120.

[0111] In the third heat source preheat operation step (S170), in the case (S180) where the measured third preheat temperature T3 is less than the third reference temperature T ref3 , the third heat source preheat operation step (S170) is repeated. ref3 In the third heat source preheat operation step (S170), in the case (S180) where the measured third preheat temperature T3 is less than the third reference temperature T ref3 , the third heat source preheat operation step (S170) is repeated.

[0112] And, in the case (S180) where the measured third preheat temperature T3 is less than the third reference temperature T ref3 , the third heat source preheat operation step (S170) is repeated.

[0113] Subsequently, in the case (S200) where the fourth preheat temperature T4, which is the measured temperature of the outside of the baking chamber 120, rises to the fourth reference temperature T ref4 , the preheat operation is ended.

[0114] And, in the case (S200) where the measured fourth preheat temperature T4 is less than the fourth reference temperature T ref4 , the third heat source temperature maintenance operation (S190) is repeated. At this time, the first heat source temperature maintenance operation step (S130) and the second heat source temperature maintenance operation step (S160) are also continuously performed.

[0115] That is, according to the present embodiment, the measurement positions of the first preheat temperature T1, the second preheat temperature T2, the third preheat temperature T3, and the fourth preheat temperature T4 are formed to be different from each other, the first preheat temperature T1, the second preheat temperature T2, and the third preheat temperature T3 are the convection temperature, the conduction temperature, and the radiation temperature of the heat transferred from the first heat source portion 310, the second heat source portion 330, and the third heat source portion 320, and the fourth preheat temperature T4 is the temperature of the outside space adjacent to the baking chamber 120, which is the temperature capable of estimating the temperature of the internal space 121 of the baking chamber 120.

[0116] According to the proposed embodiments, a baking apparatus and a control method thereof can be provided, which reduce a baking preheating operation time and further improve productivity.

[0117] Further, the baking progress of the object is more effectively measured, so that the user can perform desired baking.

[0118] Figure 11 FIG. 1 is a diagram showing an internal configuration of a baking apparatus according to an embodiment of the present application. Further, Figure 12 FIG. 2 is a diagram showing a cross section of a radiation temperature measuring unit of Figure 11 FIG. 3 is a diagram showing a configuration of the radiation temperature measuring unit of Figure 13 FIG. 4 is a diagram showing a configuration of the radiation temperature measuring unit of Figure 11

[0119] The present embodiment is different only in the configuration of the radiation temperature measuring unit and the configuration of correcting the radiation temperature measurement result, and is substantially the same as the baking apparatus shown in Figures 1 to 10

[0120] Referring to Figures 11 to 13 A baking apparatus 1 according to an embodiment of the present application includes a baking chamber portion 100 including a cylindrical baking chamber 120 internally stirring an object and extending in an up-and-down direction, and a rotating stirring portion 180 rotating for stirring the object accommodated in the baking chamber 120, and a heat source portion supplying heat to the baking chamber portion 100, the heat source portion including a first heat source portion 310 providing a hot air to the baking chamber portion 100, thereby supplying a convection heat to an inside of the baking chamber 120. Further, the baking apparatus 1 includes a radiation temperature measuring unit 560 measuring a temperature of the baking chamber 120 or the object based on infrared rays radiated from an inner surface of the baking chamber 120 heated by the heat source portion or from a surface of the object. The radiation temperature measuring unit 560 is provided to an upper portion unit 110 disposed at an upper side of the baking chamber 120, and faces an inside space side of the baking chamber 120. A measurement hole 115 penetratingly formed and communicating with the baking chamber 120 is formed in the upper portion unit 110.

[0121] ​​Also, a guide portion 116 of a cylindrical shape surrounding the measurement hole 115 and protruding toward the lower side is formed on the lower surface of the upper unit 110, and the guide portion 116 is aligned with the measurement hole 115. That is, as the guide portion 116 surrounding the measurement hole 115 is formed to protrude toward the inside space 121 of the roasting chamber 120, it is possible to inhibit dust or the like generated during the roasting process from flowing into the measurement hole 115 side of the roasting chamber 120 to contaminate the surface of the filter portion 514. The sensing portion 511 can irradiate light for measurement toward the inside space 121 of the roasting chamber 120 through the measurement hole 115 surrounded by the guide portion 116, or receive light emitted from the object.

[0122] The first heat source portion 310 includes a flow pipe 311 to flow air, and a heating unit 312 (refer to Figure 5 and Figure 7 ) arranged on one side of the flow pipe 311 and heating the flowing air. The flow pipe 311 is connected to a blowing unit 313 for supplying air to supply air, and one side of the heating unit 312 and the flow pipe 311 is connected to the upper unit 110. Exemplarily, in the heating unit 312, a plurality of heating elements are arranged in a mesh or coil form, and air is heated by passing through the heating elements.

[0123] The radiation temperature measurement unit 560 includes a sensing portion 561 to measure the temperature of the object based on infrared rays, a measurement unit main body 565 arranged on the upper surface of the upper unit 110 and formed with a main body side through hole 566 communicating with the roasting chamber 120, a substrate 562 arranged on one side of the measurement unit main body 565 and installed with the sensing portion 561, and a filter portion 564 arranged in front of the sensing portion 561 and passing light having a pre-set wavelength band. Exemplarily, the sensing portion 561 can be formed in a column shape, and in more detail, can be formed in a cylindrical shape.

[0124] The substrate 562 is arranged in the outside space of the roasting chamber 120, and includes an outside space temperature measurement unit (not shown) to measure the temperature of the outside space. The outside space is arranged between the housing 190 (refer to Figure 1 ) and the roasting chamber 120. A connection terminal 568 for transmitting temperature measurement data is formed on the upper surface of the substrate 562, and the substrate 562 is fixed to the measurement unit main body 565 by a first fastening member 581 passing through the substrate 562 and a gasket member 582.

[0125] Exemplarily, the measurement unit body 565 can be formed as a single body, and a fastening hole passing through the upper surface to the lower surface is formed in the measurement unit body 565. Also, the measurement unit body 565 is fixed to the upper surface of the upper unit 110 by the second fastening member 583 inserted into the fastening hole.

[0126] The body-side through hole 566 communicates with the measurement hole 115 of the upper unit 110, and the sensing portion 561 and the filter portion 564 are located in the body-side through hole 566. At this time, one surface of the filter portion 564 faces the sensing portion 561, and the other surface directly faces the roasting chamber 120.

[0127] In the measurement unit body 565, a ventilation hole 567 is formed in a direction intersecting the direction in which the body-side through hole 566 is formed, and the body-side through hole 566 and the ventilation hole 567 intersect each other. At this time, the filter portion 564 is spaced apart from the roasting chamber 120 with the ventilation hole 567 interposed therebetween.

[0128] The roasting apparatus 1 according to the embodiment of the present application further includes a ventilation portion 570 communicating with the flow pipe 311 on one side and communicating with the ventilation hole 567 on the other side. Air flowing to the ventilation hole 567 side through the ventilation portion 570 flows to the other surface (a surface facing the roasting chamber 120) side of the filter portion 564.

[0129] That is, the dust and the like generated during the roasting process is inhibited from flowing to the measurement hole 116 side by means of the guide portion 116, and in the case where the dust flows to the measurement hole 116 side, the dust is removed by means of the flow of air flowing to the other surface side of the filter portion 564 from the ventilation portion 570, so that contamination of the filter portion 564 can be minimized. Also, air generated from the ventilation portion 570 to the measurement hole 116 side flows to the inside space 121 side of the roasting chamber 120 through the guide portion 116, so that the dust can be minimized from flowing to the measurement hole 116 side through the guide portion 116.

[0130] Also, by means of the air flow formed to flow from the filter portion 564 side to the outside of the guide portion 116 through the ventilation portion 570, negative pressure is inhibited from being formed from the outside of the guide portion 116 to the inside of the guide portion 116, so that the dust generated during the roasting process can be inhibited from flowing to the filter portion 564 side.

[0131] In addition, the ventilation portion 570 includes a pipe unit 575 communicating with the flow pipe 311 on one side, and a plug unit 571 connected to the other side of the pipe unit 575 on one side and connected to the ventilation hole 567 on the other side.

[0132] The plug unit 571 is formed in a curved shape, and a plug portion 573 inserted into the ventilation hole 567 is formed on the other side of the plug unit 571.

[0133] The vent hole 567 is formed through one side and the other side of the measurement unit main body 565, and a shielding unit 584 for shielding the vent hole 567 from the outside is provided at the other side of the vent hole 567. Since the vent hole 567 is formed through, maintenance such as cleaning of the radiation temperature measurement unit 560 can be easily performed.

[0134] In addition, the filter part 564 of the radiation temperature measurement unit 560 forms an emissivity, which is an amount of energy released, differently on the surface of one object at the time of thermal radiation according to temperature. That is, the energy of light emitted from the baking chamber 120 or the object can be different according to the temperature condition of the filter part 564, and thus the measured temperature (T measure ) of the sensing part 561 receiving infrared rays via the filter part 564 needs to be corrected.

[0135] Therefore, the baking apparatus 1 according to the present embodiment corrects the measured temperature (T outside ) of the baking chamber 120 or the object measured by the radiation temperature measurement unit 560 based on the outside temperature (T measure ) of the baking chamber 120, and thus calculates the actual temperature (T real ) of the baking chamber or the object. The baking apparatus 1 can further include a control part (not shown) that controls the heat source parts 510, 520, 530, and 540 and receives data from the temperature measurement unit to calculate the actual temperature (T real ).

[0136] At this time, the actual temperature (T real ) is calculated considering the change in the emissivity of the filter part based on the outside temperature (T measure ) in the measured temperature (T outside ).

[0137] Therefore, the actual temperature (T real ) and the measured temperature (T measure ) satisfy the following relational expression.

[0138] [Equation 1]

[0139]

[0140] T real,k is the corrected actual temperature of the object (based on absolute temperature);

[0141] T measure,k is the measured temperature of the object measured by the sensing part (based on absolute temperature);

[0142] T outside,cis an outside temperature of the baking chamber (in Celsius);

[0143] T outside,k is an outside temperature of the baking chamber (in absolute temperature);

[0144] E0 is an emissivity of the filter portion at 0 degree Celsius;

[0145] e is a change amount of the emissivity of the filter portion per 1 degree of absolute temperature (or 1 degree of Celsius).

[0146] That is, the baking apparatus 1 according to the embodiment of the present application measures the temperature of the baking chamber 120 or the object by measuring infrared rays radiated from the surface of the baking chamber 120 or the object, thereby having an advantage that the temperature can be more accurately and rapidly measured.

[0147] Also, in the case where the emissivity of the filter portion changes according to a temperature condition, it is corrected, thereby having an advantage that the temperature can be more accurately measured.

[0148] Figure 14 is a view showing an internal configuration of a baking apparatus according to still another embodiment of the present application.

[0149] The present embodiment is different from the baking apparatus shown in Figures 1 to 13 in that only a configuration for measuring a chamber outside space temperature of the baking apparatus and controlling a preheating operation of the baking apparatus is different, and is substantially the same as the configuration of the baking apparatus shown in , and thus the following description will be centered on a characteristic part of the present embodiment.

[0150] First, referring to Figure 14 , the baking apparatus 1 according to the embodiment of the present application measures a chamber outside space temperature (T outside ) of a chamber outside space 160 between a baking chamber portion 120 disposed inside the baking apparatus 1 and a housing unit 190 surrounding the baking chamber portion 120 and forming an outer shape of the baking apparatus 1, and performs a preheating operation until a measured temperature (T measure ) of a chamber inside of the baking chamber 121 and the chamber outside space temperature (T outside ) respectively reach a reference chamber inside temperature and a reference chamber outside space temperature.

[0151] In the case where the baking apparatus 1 judges whether the preheating operation is ended by judging whether the measured temperature (T measure ) of the baking chamber inside reaches the reference chamber inside temperature, the chamber outside space temperature (T outside) overbaked or underbaked, a problem of low baking quality occurs during the baking process after the end of the preheating due to undesired heat transfer between the baking chamber 121 and the chamber exterior space 160.

[0152] Therefore, the baking apparatus 1 according to the present embodiment includes a radiation temperature measurement unit 560 that measures the temperature of the baking chamber 120 or the object based on infrared rays emitted from the inner face of the baking chamber portion 120 or the surface of the object heated by the heat source portions 310, 320, 330, the chamber exterior space temperature (T outside ) of the chamber exterior space 160 between the housing unit 190 and the baking chamber portion 120, and judges whether or not to end the preheating operation also considering whether or not the chamber exterior space temperature (T outside ) of the chamber exterior space 160 reaches the reference chamber exterior space temperature. At this time, the reference chamber exterior space temperature is formed in the range of 55 degrees Celsius to 90 degrees Celsius.

[0153] The radiation temperature measurement unit 156 includes a sensing portion that measures the temperature of the object based on infrared rays and faces the baking chamber, an exterior space temperature measurement unit that measures the chamber exterior space temperature of the chamber exterior space, and a substrate on which the sensing portion and the exterior space temperature measurement unit are mounted.

[0154] In addition, the baking apparatus 1 further includes a radiation heat source portion 320 that provides radiation heat to the baking chamber 120, a convection heat source portion 310 that provides convection heat to the baking chamber 120 and includes an inflow pipe 311 that guides an air current to the baking chamber portion side and a heating unit 312 provided to the inflow pipe 311, and a conduction heat source portion 330 that surrounds at least a portion of the outer periphery face of the baking chamber portion 120 and is used to provide conduction heat to the baking chamber 121 side through the baking chamber portion 120.

[0155] The radiation heat source portion 320 is provided to the upper unit 110 in a state of being arranged inside the baking chamber 121, and the upper unit 110 is formed with a through hole that leaks a portion of light emitted from the radiation heat source portion 320 to the chamber exterior space 160 side. That is, light emitted from the radiation heat source portion 320 is transmitted to the baking chamber 121 side, and the baking chamber 121 and / or the object are heated, and a portion of the light can be directly leaked to the chamber exterior space 160 side from the radiation heat source portion 320 through the through hole or be reflected inside the baking chamber 121 and then leaked to the chamber exterior space 160 side through the through hole. The chamber exterior space 160 can be heated by the leaked light. Also, heat can be transmitted to the chamber exterior space 160 side from the upper unit 110 heated together by heat supplied to the baking chamber 121.

[0156] A control method of the baking device 1 according to the embodiment of the present application will be described in detail below.

[0157] Figure 15 is a diagram showing Figure 14 a control method of the baking device.

[0158] With reference to Figure 15 , first, a baking preheating operation start step (S310) of performing preheating of the baking chamber 121 of the baking device 1 is executed.

[0159] Then, a preheating condition satisfaction / non-satisfaction judgment step (S320) of judging whether the preheating state of the baking chamber 121 satisfies a preheating condition is executed. At this time, the preheating condition can be temperature profile information which is set in advance for judging whether the measured temperature (T measure ) of the baking chamber 120 reaches the reference internal temperature and whether the chamber external space temperature (T outside ) reaches the reference chamber external space temperature.

[0160] In the preheating condition satisfaction / non-satisfaction judgment step (S320), the baking device 1 judges whether the measured temperature (T measure ) of the baking chamber 120 reaches the reference internal temperature and whether the chamber external space temperature (T outside ) of the baking chamber 120 reaches the reference chamber external space temperature according to the temperature profile information.

[0161] In the preheating condition satisfaction / non-satisfaction judgment step (S320), in a case where the preheating state of the baking chamber 121 satisfies the preheating condition, a baking operation start step (S320) of starting the baking operation is executed. In addition, in the preheating condition satisfaction / non-satisfaction judgment step (S320), in a case where the preheating state of the baking chamber 121 does not satisfy the preheating condition, the baking preheating operation (S310) is executed.

[0162] Then, a baking end / non-end judgment step (S340) of judging whether the baking is ended is executed.

[0163] Then, an additional baking execution / non-execution judgment step (S350) of judging whether the additional baking is executed is executed. In the additional baking execution / non-execution judgment step (S350), in a case where it is judged that the additional baking is executed, the baking preheating operation start step (S310) is executed according to the pre-set baking profile information. At this time, in a case where the additional baking is executed, since the baking chamber is in a heated state due to the previous baking operation, the preheating time can be shortened. In addition, in the additional baking execution / non-execution judgment step (S350), in a case where the additional baking is not executed, the control is ended.

[0164] According to the proposed embodiments, a preheating function for the baking chamber 120 can be provided, which can further improve the baking quality.

[0165] The system or apparatus described above can be implemented by hardware components, software components, and / or a combination of hardware components and software components. For example, the system, apparatus, and components described in the embodiments can be implemented using one or more general-purpose computers or special-purpose computers such as a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor (DSP), a microcomputer, a field programmable array (FPA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to a command. The management apparatus can execute an operating system (OS) and one or more software applications executed on the operating system. Also, the management apparatus can access, store, manipulate, manage, and generate data in response to the execution of the software. For ease of understanding, although a case where one management apparatus is used is described, those skilled in the art will understand that the management apparatus can include a plurality of processing elements and / or a plurality of types of management components. For example, the management apparatus can include a plurality of processors or one processor and one controller. Also, other processing configurations such as a parallel processor can be used.

[0166] The software can include a computer program, code, instructions, or a combination of one or more thereof, can constitute the management apparatus to arbitrarily operate, or can independently or collectively command the management apparatus. The software and / or data, in order to be analyzed by the management apparatus or to provide instructions or data to the management apparatus, can be embodied in a certain type of machine, component, physical device, virtual equipment, computer storage medium or apparatus, or transmitted signal wave, permanently or temporarily. The software is distributed on computer systems connected through a network, so it can also be stored or executed in a distributed manner. The software and data can be stored in one or more computer-readable recording media.

[0167] The preferred embodiments of the present application have been described above, but the present application is not limited to the above, and can be implemented in various ways within the scope of the claims and the detailed description of the present application and the drawings, which obviously also belong to the scope of the present application.

Claims

1. A baking device, as a baking device of a heating object, characterized by, including: a baking chamber portion including a cylindrical baking chamber which internally stirs an object and extends in an up-and-down direction, and a rotating stirring portion which rotates in order to stir the object accommodated in the baking chamber, wherein the rotating stirring portion rotates around a stirring shaft formed in a vertical direction; a housing unit which surrounds the baking chamber portion; a heat source portion including a first heat source portion which provides radiant heat to the baking chamber portion; and a radiant temperature measurement unit which measures a temperature of the baking chamber or the object and a chamber exterior space temperature of a chamber exterior space between the housing unit and the baking chamber portion, based on infrared rays emitted from an inner surface of the baking chamber portion or a surface of the object heated by the heat source portion, wherein the baking device performs a preheating operation until a chamber interior temperature of the baking chamber and the chamber exterior space temperature reach a reference chamber interior temperature and a reference chamber exterior space temperature which are set in advance, a measured temperature of the baking chamber or the object measured by the radiant temperature measurement unit is corrected based on the chamber exterior space temperature, thereby calculating an actual temperature of the baking chamber or the object.

2. The baking device according to claim 1, wherein the radiant temperature measurement unit is provided in an upper unit arranged on an upper side of the baking chamber and faces an inner space side of the baking chamber, the radiant temperature measurement unit includes a sensing portion which measures a temperature of the object based on infrared rays and faces the baking chamber, an exterior space temperature measurement unit which measures a chamber exterior space temperature of the chamber exterior space, and a substrate on which the sensing portion and the exterior space temperature measurement unit are mounted.

3. The baking device according to claim 2, wherein the reference chamber exterior space temperature is set in a range of 55 degrees Celsius to 90 degrees Celsius.

4. The baking device according to claim 2, wherein a measurement hole which is formed to communicate with the baking chamber is formed in the upper unit, the radiant temperature measurement unit further includes a measurement unit main body which is arranged on an upper surface of the upper unit and is formed with a main body side through hole which communicates with the baking chamber, and a filter portion which is arranged in front of the sensing portion and allows light having a predetermined wavelength band to pass therethrough, wherein the substrate is arranged on one side of the measurement unit main body, the main body side through hole communicates with the measurement hole, and the sensing portion is located in the main body side through hole, one surface of the filter portion faces the sensing portion, and the other surface of the filter portion directly faces the baking chamber, an emissivity of the filter portion is different according to temperature.

5. The baking device according to claim 4, wherein the actual temperature is calculated in the measured temperature considering a change in the emissivity of the filter portion based on the exterior temperature, the actual temperature and the measured temperature satisfy the following relational expression: T real,k is the corrected actual temperature of the object based on the absolute temperature; T measure,k is a measured temperature of the object measured by the sensing section based on an absolute temperature; T outside,c is the external temperature of the baking chamber in degrees Celsius; T outside,k is the external temperature of the baking chamber in absolute temperature; E0 is an emissivity of the filter portion at 0 degrees Celsius. e is a change amount of the emissivity per 1 degree of absolute temperature or per 1 degree of Celsius of the filter part.

6. The baking apparatus according to claim 2, wherein the first heat source part of the heat source part is provided to the upper unit in a state of being arranged inside the baking chamber, a through hole is formed in the upper unit to leak a part of light emitted from the first heat source part to the outside space of the chamber.

7. The baking apparatus according to claim 6, wherein the heat source part further includes a second heat source part that supplies convection heat to the baking chamber and includes an inflow pipe that guides air flow to the baking chamber part and a heating unit provided to the inflow pipe, and a third heat source part that surrounds at least a part of the outer circumferential surface of the baking chamber part and supplies conduction heat to the baking chamber part to the baking chamber side through the baking chamber part.

8. A baking apparatus as a baking apparatus that heats an object, characterized by, including: a baking chamber part including a cylindrical baking chamber that internally stirs an object and is formed to extend in the up-and-down direction, and a rotating stirring part that rotates for stirring the object accommodated in the baking chamber, a heat source part that supplies heat to the baking chamber part and includes a first heat source part that supplies hot air to the baking chamber part to supply convection heat to the inside of the baking chamber, and a radiation temperature measuring unit that measures the temperature of the baking chamber or the object based on infrared rays emitted from the inner surface of the baking chamber part or the surface of the object heated by the heat source part, wherein the first heat source part includes a flow pipe that flows air, wherein the radiation temperature measuring unit is provided to an upper unit arranged on the upper side of the baking chamber and faces the inside space of the baking chamber, a measurement hole is formed in the upper unit to communicate with the baking chamber, the radiation temperature measuring unit includes a sensing part that measures the temperature of the object based on infrared rays, a measuring unit main body arranged on the upper surface of the upper unit and formed with a main body side through hole that communicates with the baking chamber, a substrate arranged on one side of the measuring unit main body and installed with the sensing part, and a filter part arranged in front of the sensing part and passing light having a pre-set wave band, wherein the main body side through hole communicates with the measurement hole and the sensing part is located in the main body side through hole, one surface of the filter part faces the sensing part and the other surface of the filter part directly faces the baking chamber, in the measuring unit main body, a ventilation hole is formed in a direction intersecting the direction in which the main body side through hole is formed, the main body side through hole and the ventilation hole intersect each other, the baking apparatus further includes a ventilation part that communicates with the flow pipe on one side and communicates with the ventilation hole on the other side, air flowing to the other surface side of the filter part through the ventilation part.

9. The baking apparatus according to claim 8, wherein The first heat source section further includes a heating unit arranged on one side of the flow pipe and heating the flowing air.

10. The roasting apparatus according to claim 9, wherein The ventilation section includes: a pipe unit communicating with one side of the flow pipe; and a plug unit connected to one side of the pipe unit and connected to the other side of the ventilation hole, The plug unit is formed in a curved shape, A plug portion inserted into the ventilation hole is formed on the other side of the plug unit, The ventilation hole completely penetrates one side and the other side of the measurement unit main body, A shielding unit for shielding the ventilation hole from the outside is provided on the other side of the ventilation hole.

11. The roasting apparatus according to claim 8, wherein The measured temperature of the roasting chamber or the object measured by the radiation temperature measurement unit is corrected based on the temperature of the outside space of the chamber, thereby calculating the actual temperature of the roasting chamber or the object, The radiation temperature measurement unit is provided in an upper unit arranged on the upper side of the roasting chamber and faces the inside space side of the roasting chamber, A measurement hole formed to communicate with the roasting chamber is formed in the upper unit, The radiation temperature measurement unit includes a sensing portion that measures the temperature of an object based on infrared rays, a measurement unit main body arranged on the upper surface of the upper unit and formed with a main body side through hole that communicates with the roasting chamber, a substrate arranged on one side of the measurement unit main body and on which the sensing portion is mounted, and a filter portion arranged in front of the sensing portion and allowing light having a pre-set wavelength band to pass through, The main body side through hole communicates with the measurement hole, and the sensing portion is located in the main body side through hole, One surface of the filter portion faces the sensing portion, and the other surface of the filter portion directly faces the roasting chamber, The emissivity of the filter portion varies according to temperature.

12. The roasting apparatus according to claim 11, wherein Further comprising: a housing forming an appearance, The substrate includes an outside space temperature measurement unit arranged in an outside space formed between the housing and the roasting chamber and measuring the temperature of the outside space, The actual temperature is calculated in the measured temperature taking into account the change in the emissivity of the filter portion based on the outside temperature, The actual temperature and the measured temperature satisfy the following relationship: T real,k is the corrected actual temperature of the object based on the absolute temperature; T measure,k is a measured temperature of the object measured by the sensing section based on an absolute temperature; T outside,c is the external temperature of the baking chamber in degrees Celsius; T outside,k is the external temperature of the baking chamber in absolute temperature; E0 is the emissivity of the filter portion at 0 degrees Celsius; e is the change amount of the emissivity of the filter portion per 1 degree of absolute temperature or per 1 degree of Celsius.

13. A control method of a baking apparatus including a baking chamber portion formed with a baking chamber and a housing unit surrounding the baking chamber portion, characterized by, The control method of the roasting apparatus includes: a roasting preheating operation start step of performing preheating on a roasting chamber, a preheating condition satisfaction determination step of determining whether the preheating state of the roasting chamber satisfies a preheating condition, and a roasting operation start step of starting a roasting operation, wherein the preheating condition is temperature profile information for determining whether a measured temperature of the baking chamber reaches a reference chamber internal temperature set in advance and whether a chamber external space temperature for a chamber external space formed between the baking chamber and the housing unit reaches a reference chamber external space temperature set in advance, correcting the measured temperature of the baking chamber based on the chamber external space temperature to thereby calculate an actual temperature of the baking chamber, the reference chamber external space temperature is formed in a range of 55 degrees Celsius to 90 degrees Celsius.

14. The control method of a baking apparatus according to claim 13, characterized by, Further comprising: an additional baking execution / non-execution determination step of determining whether to execute additional baking, wherein, in a case where it is determined in the additional baking execution / non-execution determination step to execute additional baking, the baking preheating operation start step and the baking operation start step are continuously executed according to the pre-set baking profile information.

Images