Roasting apparatus and controlling methof thereof and pre-heating controlling mehtod for uniformity of roating

Abstract

The present invention relates to a roasting device and a method for controlling a roasting device, and more specifically, to a roasting device and a method for controlling a roasting device in which a target object is stirred and roasted in a roasting chamber. A roasting device according to the present invention, in a roasting device for heating a target object, comprises: a cylindrical roasting chamber formed extending in an up-and-down direction while the target object is stirred inside, and a rotary stirring unit that rotates to stir the target object contained in the roasting chamber, wherein the rotary stirring unit comprises: a roasting chamber portion that rotates around a stirring axis formed in a vertical direction; a casing unit surrounding the roasting chamber portion; a heat source portion including a first heat source portion that provides radiant heat to the roasting chamber portion; and a radiant temperature measuring unit that measures the temperature of the roasting chamber or the target object and the temperature of the chamber outside space between the casing unit and the roasting chamber portion based on infrared rays emitted from the inner surface of the roasting chamber portion or the surface of the target object heated by the heat source portion, and the temperature of the chamber outside space between the casing unit and the roasting chamber portion; and performs a preheating operation until the internal temperature of the roasting chamber and the temperature of the chamber outside space reach a preset reference internal temperature of the chamber and a reference external space temperature of the chamber.

Description

Technology Field

[0001] The present invention relates to a roasting device and a method for controlling the same, and more specifically, to a roasting device in which a target object is stirred and roasted in a roasting chamber, a method for controlling the same, and a preheating control method for uniformity of roasting. Background Technology

[0003] Recently, grain roasters or coffee roasters that can easily and automatically roast grains such as coffee beans in professional coffee shops or at home are being introduced.

[0004] A coffee roaster like this automatically roasts coffee beans when the roasting operation mode is set using a temperature sensor and a microcomputer.

[0005] Conventional commercial automatic coffee roasters are mainly of the horizontal rotating drum type, which agitates the beans by rotating the drum in forward and reverse directions to ensure they are roasted evenly (Registered Patent No. 342091, Registered Patent No. 369539, Registered Patent No. 463341, Registered Patent No. 804106, Registered Patent No. 887985, Registered Patent No. 963695, Published Patent No. 2009-30655, Published Patent No. 2010-38802).

[0006] However, conventional automatic coffee roasters provide a method of heating using only one heat source, such as direct gas combustion on a horizontal rotating drum, which requires a long time for preheating and has the problem of not being able to respond to various roasting environments. The problem to be solved

[0008] Accordingly, the present invention aims to provide a roasting device with improved productivity and a method for controlling the same by reducing the roasting preheating operation time.

[0009] In addition, the present invention aims to provide a roasting device and a control method thereof that can more effectively measure the roasting process of an object to enable the user to perform the roasting they desire.

[0010] In addition, we intend to provide a roasting device capable of improving roasting quality and a method for controlling the same. means of solving the problem

[0012] A roasting device according to one aspect of an embodiment of the present invention is a roasting device for heating a target object, comprising: a cylindrical roasting chamber formed extending in an up-and-down direction in which the target object is stirred inside, and a rotary stirring unit that rotates to stir the target object contained in the roasting chamber, wherein the rotary stirring unit comprises: a roasting chamber portion that rotates around a stirring axis formed in a vertical direction; a casing unit surrounding the roasting chamber portion; a heat source portion including a first heat source portion that provides radiant heat to the roasting chamber portion; and a radiant temperature measuring unit that measures the temperature of the roasting chamber or the target object and the temperature of the chamber outside space between the casing unit and the roasting chamber portion based on infrared rays emitted from the inner surface of the roasting chamber portion or the surface of the target object heated by the heat source portion, and the preheating operation is performed until the internal temperature of the roasting chamber and the temperature of the chamber outside space reach a preset reference internal temperature of the chamber and the reference external space temperature of the chamber.

[0013] Additionally, the radiation temperature measuring unit may be positioned on an upper unit positioned above the roasting chamber and facing toward the internal space of the roasting chamber, and the radiation temperature measuring unit may include a sensing unit facing toward the roasting chamber and measuring the temperature of an object based on infrared rays, an external space temperature measuring unit for measuring the external space temperature of the chamber, and a substrate on which the sensing unit and the external space temperature measuring unit are mounted.

[0014] In addition, the external space temperature of the reference chamber can be formed in the range of 55 degrees Celsius to 90 degrees Celsius.

[0015] In addition, the measured temperature (T) of the roasting chamber or the object measured by the radiation temperature measuring unit. measure ) is the temperature of the space outside the chamber (T outside The actual temperature of the roasting chamber or the object can be calculated by correcting based on ).

[0016] Additionally, a measuring hole is formed through the upper unit and communicates with the roasting chamber, and the radiation temperature measuring unit comprises a sensing unit that measures the temperature of an object based on infrared rays, a measuring unit body disposed on the upper surface of the upper unit and having a body-side through hole formed therein that communicates with the roasting chamber, a substrate disposed on one side of the measuring unit body on which the sensing unit is mounted, and a filter unit disposed in front of the sensing unit through which light of a preset wavelength band passes, wherein the body-side through hole communicates with the measuring hole and the sensing unit is located in the body-side through hole, one side of the filter unit faces the sensing unit and the other side faces directly with the roasting chamber, and the emissivity of the filter unit may vary depending on the temperature.

[0017] In addition, the above actual temperature (T real ) is the above measured temperature (T measure At the above external temperature (T outside It is calculated by considering the change in emissivity of the filter section based on ), and the actual temperature (T real ) and the above measured temperature (T measure ) can satisfy the following relationship.

[0018]

[0019] T real,k is the corrected actual temperature of the object (based on absolute temperature)

[0020] T measure,l is the measured temperature of the object measured by the sensing unit (based on absolute temperature)

[0021] T outside,c is the external temperature of the roasting chamber (based on Celsius),

[0022] T outside,k is the external temperature of the roasting chamber (based on absolute temperature),

[0023] E0 is the emissivity of the filter section at 0 degrees Celsius,

[0024] e is the change in emissivity per 1 degree of absolute temperature (or 1 degree of Celsius) of the filter section.

[0025] In addition, the first heat source of the heat source is installed in the upper unit while positioned inside the roasting chamber, and a through hole may be formed in the upper unit to allow a portion of the light emitted from the first heat source to leak out to the space outside the chamber.

[0026] Additionally, the heat source may further include a second heat source comprising an inlet pipe that provides convective heat to the roasting chamber and guides airflow toward the roasting chamber, and a heater unit installed in the inlet pipe, and a third heat source that surrounds at least a portion of the outer surface of the roasting chamber and provides conductive heat toward the roasting chamber through the roasting chamber.

[0027] A control method for a roasting device according to another aspect of an embodiment of the present invention comprises a roasting chamber portion in which a roasting chamber is formed and a casing unit surrounding the roasting chamber portion, the control method comprising: a roasting preheating operation initiation step for performing preheating for the roasting chamber; a preheating condition satisfaction determination step for determining whether the preheating state of the roasting chamber satisfies a preheating condition; and a roasting operation initiation step for initiating a roasting operation; wherein the preheating condition is a measured temperature (T) of the roasting chamber (120) according to preset temperature profile information. measure Whether ) has reached the above-mentioned internal temperature and the chamber external space temperature (T) for the chamber external space formed between the roasting chamber and the casing unit outside) is whether the external space temperature of the above reference chamber has been reached.

[0028] In addition, the external space temperature of the reference chamber can be formed in the range of 55 degrees Celsius to 90 degrees Celsius.

[0029] In addition, it further includes a step for determining whether to proceed with additional roasting, and if it is determined in the step for determining whether to proceed with additional roasting that additional roasting is to be performed, the roasting preheating operation start step and the roasting operation start step may be performed continuously according to preset roasting profile information. Effects of the invention

[0031] According to the proposed embodiment, a roasting device with improved productivity and a method for controlling the same can be provided by reducing the roasting preheating operation time.

[0032] In addition, the roasting process of the object can be measured more effectively, allowing the user to achieve the desired roasting.

[0033] In addition, it has the advantage of improving roasting quality. Brief explanation of the drawing

[0035] FIG. 1 is a drawing showing a roasting device according to an embodiment of the present invention. FIG. 2 is a drawing showing the internal configuration of the roasting device of FIG. 1 projected. Figure 3 is a drawing showing the configuration of the roasting chamber section of the roasting device of Figure 1. Figure 4 is a drawing showing the roasting chamber of Figure 3 viewed from above. Figure 5 is a drawing showing the state in which the third heat source is removed from the roasting chamber section of Figure 3. Figure 6 is a drawing showing the upper unit of the roasting chamber section of Figure 3. Figure 7 is a drawing showing a cross-section of the roasting chamber section of Figure 3. Figure 8 is a diagram showing the first temperature sensing unit of the roasting device of Figure 1 in a disassembled state. Figure 9 is a drawing showing a cross-section of the first temperature sensing unit of Figure 8. Figure 10 is a diagram showing a control method for the roasting device of Figure 1. FIG. 11 is a drawing showing the internal configuration of a roasting device according to another embodiment of the present invention. FIG. 12 is a drawing showing a cross-section of the radiation temperature measuring unit of FIG. 11. Figure 13 is a diagram showing the configuration of the radiation temperature measuring unit of Figure 11. FIG. 14 is a drawing showing the internal configuration of a roasting device according to another embodiment of the present invention. Figure 15 is a diagram showing a control method for the roasting device of Figure 14. Specific details for implementing the invention

[0036] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0037] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention.

[0038] Throughout the specification, the same reference numerals refer to the same components.

[0039] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0040] Meanwhile, potential effects that may be expected from the technical features of the present invention that are not specifically mentioned in the specification of the present invention are treated as described in the specification, and since the embodiments are provided to more completely explain the present invention to those with average knowledge in the art, the contents illustrated in the drawings may be exaggerated compared to the actual embodiment of the invention, and detailed descriptions of configurations that are judged to unnecessarily obscure the gist of the present invention are omitted or described briefly.

[0041] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0042] FIG. 1 is a drawing showing a roasting device according to an embodiment of the present invention, and FIG. 2 is a drawing showing the internal configuration of the roasting device of FIG. 1 projected. FIG. 3 is a drawing showing the configuration of the roasting chamber of the roasting device of FIG. 1, and FIG. 4 is a drawing showing the roasting chamber of FIG. 3 viewed from above. FIG. 5 is a drawing showing the state in which the third heat source is removed from the roasting chamber of FIG. 3. FIG. 6 is a drawing showing the upper unit of the roasting chamber of FIG. 3, and FIG. 7 is a drawing showing a cross-section of the roasting chamber of FIG. 3. FIG. 2 shows a state in which the internal configuration of the roasting device (1) is projected to the outside by projecting the casing (190) semi-transparently while the casing (190) is installed to form the outer shape of the roasting device (1).

[0043] Referring to FIGS. 1 to 7, a roasting device (1) according to an embodiment of the present invention is a device for heating a target object, such as coffee beans, to roast the target object, and comprises a roasting chamber (100) in which the target object is received and roasted, an operation panel (200) that displays information about the roasting status of the target object and receives an operation signal from a user, a target object storage unit (400) in which the target object that has been roasted in the roasting chamber (100) is stored, and a heat source unit (310, 320, 330) that supplies heat to the roasting chamber (100), and the roasting chamber (100) is surrounded by a casing (190) formed of a metal material.

[0044] More specifically, the roasting chamber section (100) includes a cylindrical roasting chamber (120) formed to extend upward and downward while stirring the object in the internal space (121), a rotary stirring section (180) including stirring blade units (181) that are rotated to stir the object contained in the roasting chamber (120), an upper unit (110) formed in a circular shape and positioned on the upper side of the roasting chamber (120), a lower unit (130) formed in a circular shape and positioned on the lower side of the roasting chamber (120), and a discharge unit (150) that communicates with the internal space (121) of the roasting chamber (120) and is optionally opened to allow the object, which has been roasted in the internal space (121) of the roasting chamber (120), to be discharged to the outside.

[0045] The roasting chamber (120) may be formed in a cylindrical shape that extends in a vertical direction, and a fixed wing (122) may be formed on the inner surface of the roasting chamber (120) to facilitate smoother stirring of the object. The fixed wing (122) is formed protruding from the inner surface of the roasting chamber (120), and the protruding height of the fixed wing (122) is formed in a shape that increases from the bottom to the top of the roasting chamber (120).

[0046] The discharge unit (150) may include a door portion (not shown) that is opened or closed by an operation signal from a control unit (not shown), and a lever portion (not shown) for a user to forcibly open the door portion in an emergency situation regardless of the control signal from the control unit. The discharge unit (150) is formed to extend in an inclined manner toward the object storage unit (400), so that when the door portion of the discharge unit (150) is opened, the roasted objects can be supplied toward the object storage unit (400).

[0047] And, the stirring blade units (181) of the rotary stirring unit (180) are rotated around a stirring axis formed in a vertical direction. Accordingly, the roasting chamber unit (100) according to the present embodiment is formed in a vertically extended state, and the stirring blade units (181) of the rotary stirring unit (180) are rotated around a stirring axis formed in a vertical direction to stir the object, thereby having the advantage of roasting the object more efficiently and allowing the roasting device (1) to be arranged more efficiently.

[0048] Meanwhile, the heat source unit (310, 320, 330) includes a first heat source unit (310) that provides convective heat inside the roasting chamber (120) by providing hot air flow to the roasting chamber (120), a third heat source unit (320) that contacts the surface of the roasting chamber (120) and provides conductive heat to the roasting chamber (120) by conduction, and a third heat source unit (320) that provides radiant heat inside the roasting chamber (120).

[0049] The first heat source unit (310) includes a flow pipe (311) through which air flows, and a heating unit (312) disposed on one side of the flow pipe (311) to heat the flowing air. The flow pipe (311) is connected to a blow unit (313) for supplying air, and air is supplied through it, and one side of the heating unit (312) and the flow pipe (311) is connected to an upper unit (110). For example, the heating unit (312) has a plurality of heating elements arranged in a mesh or coil form, and the heating elements are heated as air passes through them.

[0050] The second heat source unit (330) includes a second heat source unit body that surrounds the outer surface of the roasting chamber (120) while in contact with the outer surface of the roasting chamber (120), and the second heat source unit body may be a band heater formed of a ceramic material.

[0051] Meanwhile, at least one through hole on the roasting chamber side that communicates with the outside is formed in the roasting chamber (120), and a through hole on the second heat source body side is formed in the second heat source body side at a position corresponding to the through hole on the roasting chamber side.

[0052] For example, the roasting device (1) further includes a sample collection unit (161) capable of collecting a sample during the roasting process and a window unit (162) capable of visually confirming the roasting process within the roasting chamber (120), and the sample collection unit (161) and the window unit (162) are installed in the through hole on the roasting chamber side and the through hole on the body side of the second heat source part. Meanwhile, an air outlet (163) communicating with the internal space of the roasting chamber (120) is formed on the upper side of the roasting chamber (120), and the second heat source part (330) is not placed on the side of the air outlet (163). That is, the second heat source (330) is installed only up to a height of part of the outer surface of the roasting chamber (120), and the height up to which the second heat source (330) is installed can be defined as the limit line for accommodating objects to be accommodated in the internal space (121) of the roasting chamber (120).

[0053] Dust (shells, etc.) generated from the object during the roasting process is transferred to a dust collection unit (600) through an air outlet (163), and the dust collection unit (600) allows air to be discharged to the outside and allows the dust to be stored in an internal dust storage (not shown).

[0054] The third heat source unit (320) includes a lamp unit (321) that emits radiant heat and is installed in the upper unit (110) to provide radiant heat to the internal space (121) of the roasting chamber (120). For example, the lamp unit (321) may be a halogen lamp.

[0055] Meanwhile, the upper unit (110) includes an upper unit body (111) formed in a circular shape, and the upper unit body (111) has a heating unit (312) of the first heat source unit (310) fixed therein and a first heat source placement hole (113) that allows heated air to flow into the internal space (121) of the roasting chamber (120), a third heat source placement hole (114) that allows the lamp unit (321) of the third heat source unit (320) fixed therein so that the radiant heat emitted from the lamp unit (321) is transferred into the internal space (121) of the roasting chamber (120), and a target supply hole (112) that is connected to the hopper unit (170) of the roasting device (1) so that a target is introduced into the internal space (121) of the roasting chamber (120). Additionally, a diffuser section (118) is formed on the lower side of the upper unit (110) to guide hot air supplied from the first heat source section (310), with the diameter increasing as it goes downward. The diffuser section (118) is formed to extend from the lower surface of the upper unit (110) to the side of the rotary stirring section (180) positioned on the lower side of the roasting chamber (120), and a recessed groove (not shown) may be formed in the stirring blade unit (181) of the rotary stirring section (180) to avoid interference with the diffuser section (118).

[0056] At this time, the lamp unit (331) and the third heat source placement hole (114) of the third heat source section (320) are provided as a pair, and a first heat source placement hole (113) is placed between the pair of third heat source placement holes (114). Furthermore, the first heat source placement hole (113), which is placed in the center of the upper unit body (111), is formed in a circular shape, and the third heat source placement hole (114) is formed in a rectangular shape. Meanwhile, in the upper unit body (111) according to the present embodiment, a third heat source guide section (119) is formed that surrounds the third heat source placement hole (114) and extends downward, and the cross-section of the third heat source guide section (119) is formed in a rectangular shape corresponding to the third heat source placement hole (114). By means of the third heat source guide (119), dust generated from the object during the roasting process of the roasting chamber (120) can be prevented from contaminating the surface of the lamp unit (321) of the third heat source (320).

[0057] Meanwhile, the roasting device (1) according to the present embodiment further includes measuring units (510, 520, 530, 540) for measuring the heat source supply temperature of heat source parts (310, 320, 330) supplied to the roasting chamber (120).

[0058] The radiation temperature measuring unit (510) measures the radiation temperature of an object contained in the internal space (121) of the roasting chamber (120) and is positioned on the upper unit (110) placed above the roasting chamber (120) and faces toward the internal space (121) of the roasting chamber (120). At this time, a measuring hole (115) that penetrates in the vertical direction is formed in the upper unit body (111). The measuring hole (115) is located at an eccentric position from the center of the upper unit body (111). The radiation temperature measuring unit (510) according to the present embodiment detects the temperature change of the object during the roasting process by detecting infrared rays emitted from the surface of the object. Therefore, compared to a conventional roasting device that detects only the temperature change inside the roasting chamber (120), the roasting device (1) according to the embodiment of the present invention has the advantage of accurately detecting the temperature of the object and accurately performing the roasting intended by the user. In the process of performing a preheating operation to preheat the roasting chamber (120) before the above object is introduced into the interior of the roasting chamber (120), the radiation temperature measuring unit (510) can detect the surface temperature of the lower unit (130) forming the bottom surface of the roasting chamber (120).

[0059] Meanwhile, regarding the installation location of the radiation temperature measuring unit (510) according to the present embodiment, a number of experiments were conducted as follows. In the present embodiment, the radiation temperature measuring unit (510) was installed in the optimal installation location, which is the direction facing downward from the upper unit (110), that is, the direction facing the internal space (121) of the roasting chamber (120) from the upper unit (110).

[0060] Installation location Filter scratches Filter heat damage Measurement accuracy (object) Measurement accuracy (chamber) upper part of the roasting chamber X X height Very high central part of the roasting chamber O O height Very low Lower part of the roasting chamber O O Very high Very low

[0061] Below, the radiation temperature measuring unit (510) according to the present embodiment will be described in more detail.

[0062] FIG. 8 is a drawing showing the first temperature sensing unit of the roasting device of FIG. 1 in a disassembled state, and FIG. 9 is a drawing showing a cross-section of the first temperature sensing unit of FIG. 8.

[0063] Referring to FIGS. 8 and 9, the radiation temperature measuring unit (510) includes a sensing unit (511) for measuring temperature, a filter unit (514) disposed in front of the sensing unit (511) through which light of a preset wavelength band passes, a first bracket (513) fixed to the upper unit body (111) of the roasting unit (100) and having a first through hole (519) formed inside, a second bracket (521) fixed with one side in contact with the first bracket (513) and having a second through hole (526) formed to which the sensing unit (511) is fitted and aligned with the first through hole (519), and a substrate (512) on which the sensing unit (511) is mounted and fixed to the other side of the second bracket (521).

[0064] At this time, the sensing part (511), the first through hole (519), the second through hole (526), ​​and the filter part (514) are aligned with the measurement hole (115) of the upper unit (110), and the filter part (514) is installed between the first bracket (513) and the second bracket (521).

[0065] The sensing part (511) senses infrared radiation emitted from an object, is formed in a cylindrical shape, and is formed to extend in the same direction as the penetration direction of the measurement hole (115). The sensing part (511) may be, for example, an IR sensor.

[0066] The filter section (514) can be formed of a material that is transparent, such as glass or silicon, and has little deformation due to heat, and allows only the infrared band of light transmitted from the roasting chamber (120) to the sensing section (511) to pass through.

[0067] Meanwhile, the first bracket (513) includes a first bracket body (515) that forms the outer shape of the first bracket (513) and has a first through hole (519) disposed in the center, and a pair of protrusions (518) formed protruding upward from one side of the first bracket body (515), with a recessed space (517) between the protrusions (518), and a pair of first bracket fixing parts (516) formed protruding from the lower side of the first bracket body (515), through which a first fastening member (630) that is fastened to the upper unit body (111) passes.

[0068] The second bracket (521) includes a second bracket body (522) forming the outer shape of the second bracket (521), an insertion part (523) formed on one side of the second bracket body (522) and fitted into the recessed space of the first bracket (513), a substrate mounting surface (524) disposed on the upper surface of the second bracket (521) and on which the substrate (512) is mounted, and a pair of substrate fixing protrusions (525) formed protruding upward from the edge of the substrate mounting surface (524) and on which one side and the other side of the substrate (512) are caught.

[0069] The filter portion (514) is aligned with the first through hole (519) placed in the recessed space (517), and is in close contact between the recessed space (517) of the first bracket (513) and the insertion portion (523) of the second bracket (521). The first bracket (513) and the second bracket (521) can be mutually fixed by a second fastening member (620) that integrally penetrates the protrusion (518) of the first bracket (513) and the insertion portion (523) of the second bracket (521) while the insertion portion (523) of the second bracket (521) is inserted into the recessed space (517) of the first bracket (513). That is, with the filter section (514) sealing the first through hole (519), the first bracket (513) and the second bracket (521) are firmly fixed to each other with the filter section (514) in between, thereby preventing foreign substances in the internal space (121) of the roasting chamber (120) from entering the side of the radiation temperature measuring unit (510) and the outside through the first through hole (519) which communicates with the measuring hole (115) of the roasting chamber (120). Meanwhile, an elastic member (not shown) made of rubber or silicone material is disposed between the filter section (514) and the first bracket (513) and between the filter section (514) and the second bracket (521), thereby firmly sealing the space between them and suppressing damage to the filter section (514).

[0070] Meanwhile, the sensing unit (511) is inserted into the second through hole (526) of the second bracket (521), and with the substrate (512) seated on the mounting surface (524), the third fastening member (610) passes through the substrate (512) and is fixed to the fastening hole (527) of the second bracket (521), thereby enabling the substrate (512) and the second bracket (521) to be securely fixed.

[0071] The substrate (512) may be a PCB formed in a plate shape, and the substrate (512) is provided with a roasting chamber external temperature measuring element (not shown) capable of measuring the external temperature of the roasting chamber (120) adjacent to the location where the substrate (512) is installed, i.e., the roasting chamber (120). That is, the radiation temperature measuring unit (510) according to the present embodiment can measure the radiation temperature of the internal space (121) of the roasting chamber (120) and the temperature of the external space of the roasting chamber (120).

[0072] In addition, a cylindrical guide portion (116) is formed on the lower surface of the upper unit (110) and protrudes downward while surrounding the measurement hole (115), 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 internal space (121) of the roasting chamber (120), dust generated during the roasting process in the internal space (121) of the roasting chamber (120) can be suppressed from entering toward the measurement hole (115) and contaminating the surface of the filter portion (514). The sensing portion (511) can irradiate light for measurement onto the internal 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.

[0073] Referring again to FIGS. 3 to 7, the measuring unit (510, 530, 540, 550) of the roasting device (1) according to the present embodiment further includes a convection temperature measuring unit (530) for measuring the convection temperature of the hot air supplied to the roasting chamber (120) by the first heat source unit (310) and disposed on the flow path of the hot air, a conduction temperature measuring unit (540) for measuring the conduction temperature of the second heat source unit (330) by having a conduction temperature measuring probe (541) disposed between the second heat source unit (330) and the outer surface of the roasting chamber (120), and a contact temperature measuring unit (550) installed on the lower side of the roasting chamber (120) and in direct contact with the object during the roasting process to measure the temperature of the object.

[0074] At this time, the convection temperature measuring probe (531) of the convection temperature measuring unit (530) penetrates the side of the roasting chamber (120) and the diffuser part (118), and the tip portion of the convection temperature measuring probe (531) is located on the downstream side of the heating unit (312) so as to measure the temperature of the hot air passing through the heating unit (312).

[0075] And, the conduction temperature measuring probe (541) of the conduction temperature measuring unit (530) is positioned between the second heat source unit (330) and the roasting chamber (120) and simultaneously contacts the inner surface of the second heat source unit body (331) and the outer surface of the roasting chamber (120). At this time, the conduction temperature measuring probe (541) of the conduction temperature measuring unit (540) is positioned at the location furthest apart from the through hole on the roasting chamber side and the through hole on the second heat source unit body side. That is, the through hole on the roasting chamber side and the through hole on the body side of the second heat source unit are connected to the outside, and since the heating element of the second heat source unit (330) is not placed at the location, the conduction temperature measuring probe (541) of the conduction temperature measuring unit (540) is placed at the location furthest apart from the through hole on the roasting chamber side and the through hole on the body side of the second heat source unit, where the measurement temperature is formed relatively high, and the conduction temperature is measured based on the highest temperature.

[0076] Hereinafter, a control method for a roasting device according to the present embodiment, in particular a control method for a preheating operation, will be described in detail.

[0077] Figure 10 is a diagram showing a control method for the roasting device of Figure 1.

[0078] Referring to FIG. 10, before roasting a target object by introducing it into the roasting device (1) according to the present embodiment, a preheating operation is performed to raise the temperature of the internal space (121) of the roasting chamber (120) to a desired level of preheating temperature. The roasting device (1) according to the present embodiment has the advantage of being able to raise the temperature of the internal space (121) to a desired preheating temperature more quickly by using three heat sources in combination to perform the preheating operation. In addition, after the preheating operation is completed, the roasting device (1) according to the present embodiment controls the three heat sources differently according to the user's preference so that roasting with the flavor desired by the user can be achieved.

[0079] First, a first heat source preheating operation step (S110) is performed in which the first heat source unit provides hot air to the internal space of the roasting chamber.

[0080] Next, in the first heat source preheating operation step (S110), the measured first preheating temperature (T1) is greater than or equal to the first reference temperature (T ref1 In the case where ) (S120), the first heat source unit (310) is at the first reference temperature (T1) ref1 A first heat source temperature maintenance operation step (S130) is performed to provide convective heat so as to be maintained at ). At this time, the first preheating temperature (T1) according to the present embodiment may be the convective temperature of the hot air measured by the convective temperature measuring unit (530), and in the first heat source temperature maintenance operation step (S130), a lower level of power than in the first heat source preheating operation step (S110) is supplied to the first heat source unit (310).

[0081] And, the measured first preheating temperature (T1) is the first reference temperature (T ref1 If it is smaller than ) (S120), the first heat source preheating operation step (S110) is repeated.

[0082] Next, a second heat source preheating operation step (S130) is performed in which the second heat source unit (330) provides conductive heat to the internal space (121) of the roasting chamber (120).

[0083] In the second heat source preheating operation step (S130), the measured second preheating temperature (T2) is the second reference temperature (T ref2 ) If it is greater than (S150), the second heat source unit (330) and the second preheating temperature (T2) is the second reference temperature (T ref2 A second heat source temperature maintenance operation step (S160) is performed to provide conductive heat so as to be maintained (S160). At this time, the second preheating temperature (T2) according to the present embodiment may be the conductive temperature of the second heat source unit (330) measured by the conductive temperature measuring unit (540), and in the second heat source temperature maintenance operation step (S160), a lower level of power than in the second heat source preheating operation step (S140) is supplied to the second heat source unit (330).

[0084] And, the measured second preheating temperature (T2) is the second reference temperature (T ref2 If it is smaller than ) (S150), the second heat source preheating operation step (S140) is repeated.

[0085] Next, a third heat source preheating operation step (S170) is performed in which the third heat source unit (320) provides radiant heat to the internal space (121) of the roasting chamber (120).

[0086] In the third heat source preheating operation step (S170), the measured third preheating temperature (T3) is greater than or equal to the third reference temperature (T ref3 In the case where ) (S190), the third heat source unit (320) is at the third reference temperature (T3) and the third preheating temperature (T3) is at the third reference temperature (T ref3A third heat source temperature maintenance operation step (S190) is performed to provide radiant heat so as to be maintained at ). At this time, the third preheating temperature (T3) according to the present embodiment may be the radiant temperature of the external space (121) of the roasting chamber (120) measured by the radiant temperature measuring unit (510), and in the third heat source temperature maintenance operation step (S190), a lower level of power than in the third heat source preheating operation step (S170) is supplied to the third heat source unit (320).

[0087] And, the measured third preheating temperature (T3) is the third reference temperature (T ref3 If it is smaller than ) (S180), the third heat source preheating operation step (S170) is repeated.

[0088] Next, the fourth preheating temperature (T4), which is the measured temperature outside the roasting chamber (120), is the fourth reference temperature (T ref4 If the temperature rises to (S200), the preheating operation is terminated.

[0089] And, the measured fourth preheating temperature (T4) is the fourth reference temperature (T ref4 If it is smaller than ) (S200), 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 continued to be performed.

[0090] That is, the measurement locations of the first preheating temperature (T1), the second preheating temperature (T2), the third preheating temperature (T3), and the fourth preheating temperature (T4) according to the present embodiment are formed differently from each other, and the first preheating temperature (T1), the second preheating temperature (T2), and the third preheating temperature (T3) are the convection temperature, conduction temperature, and radiation temperature of heat transferred from the first heat source unit (310), the second heat source unit (330), and the third heat source unit (320), and the fourth preheating temperature (T4) is the temperature of the external space adjacent to the roasting chamber (120), and is a temperature that can estimate the temperature of the internal space (121) of the roasting chamber (120).

[0091] According to the proposed embodiment, a roasting device with improved productivity and a method for controlling the same can be provided by reducing the roasting preheating operation time.

[0092] In addition, the roasting process of the object can be measured more effectively, allowing the user to achieve the desired roasting.

[0093] FIG. 11 is a drawing showing the internal configuration of a roasting device according to another embodiment of the present invention. FIG. 12 is a drawing showing a cross-section of the radiation temperature measuring unit of FIG. 11, and FIG. 13 is a drawing showing the configuration of the radiation temperature measuring unit of FIG. 11.

[0094] This embodiment differs only in the configuration of the radiation temperature measuring unit and the method of correcting the radiation temperature measurement results; however, in other aspects, it is substantially identical to the configuration of the roasting device illustrated in FIGS. 1 to 10. Therefore, the following description will focus on the characteristic parts of this embodiment.

[0095] Referring to FIGS. 11 to 13, a roasting device (1) according to an embodiment of the present invention comprises a cylindrical roasting chamber (120) formed to extend in an upward and downward direction in which an object is stirred, and a rotating stirring unit (180) that rotates to stir the object contained in the roasting chamber (120). The rotating stirring unit (180) comprises a roasting chamber section (100) that rotates around a stirring axis formed in a vertical direction, and a heat source section comprising a first heat source section (310) that supplies heat to the roasting chamber section (100) and provides hot air to the roasting chamber section (100) to provide convective heat inside the roasting chamber. Furthermore, the roasting device (1) comprises a radiation temperature measuring unit (560) that measures the temperature of the roasting chamber (120) or the object based on infrared rays emitted from the inner surface of the roasting chamber (120) or the surface of the object heated by the heat source section. The radiation temperature measuring unit (560) is positioned on an upper unit (110) positioned above the roasting chamber (120) and faces toward the internal space of the roasting chamber (120). A measuring hole (115) is formed through the upper unit (110) and communicates with the roasting chamber (120).

[0096] In addition, a cylindrical guide portion (116) is formed on the lower surface of the upper unit (110) and protrudes downward while surrounding the measurement hole (115), 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 internal space (121) of the roasting chamber (120), dust generated during the roasting process in the internal space (121) of the roasting chamber (120) can be suppressed from entering toward the measurement hole (115) and contaminating the surface of the filter portion (514). The sensing portion (511) can irradiate light for measurement onto the internal 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.

[0097] The first heat source unit (310) includes a flow pipe (311) through which air flows, and a heating unit (312) disposed on one side of the flow pipe (311) to heat the flowing air (see FIG. 5 and FIG. 7). The flow pipe (311) is connected to a blow unit (313) for supplying air, and air is supplied, and one side of the heating unit (312) and the flow pipe (311) is connected to an upper unit (110). For example, the heating unit (312) has a plurality of heating elements arranged in a mesh or coil form, and the heating elements are heated as air passes through them.

[0098] The radiation temperature measuring unit (560) includes a sensing unit (561) that measures the temperature of an object based on infrared rays, a measuring unit body (565) that is positioned on the upper surface of the upper unit (110) and has a body-side through hole (566) formed therein that communicates with the roasting chamber (120), a substrate (562) that is positioned on one side of the measuring unit body (565) and on which the sensing unit (561) is mounted, and a filter unit (564) that is positioned in front of the sensing unit (561) and through which light of a preset wavelength band passes. The sensing unit (561) may be formed in a columnar shape, more specifically in a cylindrical shape.

[0099] A substrate (562) is placed in an external space of a roasting chamber (120) and includes an external space temperature measuring unit (not shown) for measuring the temperature of the external space. The external space is placed between a casing (190) (see FIG. 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 a measuring unit body (565) by a first fastening member (581) that penetrates the substrate (562) and a washer member (582).

[0100] The measuring unit body (565) may be formed as a single body as an example, and a fastening hole is formed in the measuring unit body (565) that penetrates through the upper surface to the lower surface. Then, the measuring unit body (565) is fixed to the upper surface of the upper unit (110) by means of a second fastening member (583) inserted into the fastening hole.

[0101] The body-side through hole (566) is connected to the measurement hole (115) of the upper unit (110), and a sensing part (561) and a filter part (564) are located in the body-side through hole (566). At this time, one side of the filter part (564) faces the sensing part (561), and the other side faces the roasting chamber (120) directly.

[0102] In the measuring unit body (565), a ventilation hole (567) is formed in a direction intersecting with 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 part (564) is spaced apart from the roasting chamber (120) with the ventilation hole (567) in between.

[0103] A roasting device (1) according to an embodiment of the present invention further includes a ventilation section (570) which is connected to a flow pipe (311) on one side and connected to a ventilation hole (567) on the other side. The air flow flowing into the ventilation hole (567) through the ventilation section (570) is formed on the back side (the side facing the roasting chamber (120)) of the filter section (564).

[0104] That is, dust generated during the roasting process is suppressed from entering the measurement hole (115) by the guide section (116), and if dust enters the measurement hole (115), the dust is removed by the airflow flowing from the ventilation section (570) to the back side of the filter section (564), thereby minimizing contamination of the filter section (564). In addition, the airflow generated from the ventilation section (570) to the measurement hole (115) is formed to the internal space (121) of the roasting chamber (120) through the guide section (116), thereby minimizing the inflow of dust into the measurement hole (115) through the guide section (116).

[0105] In addition, by means of a ventilation unit (570) that forms an airflow from the side of the filter unit (564) to the outside of the guide unit (116), the formation of negative pressure from the outside of the guide unit (116) to the inside of the guide unit (116) is suppressed, thereby preventing dust generated during the roasting process from entering the side of the filter unit (564).

[0106] Meanwhile, the ventilation unit (570) includes a pipe unit (575) that is in communication with the flow pipe (311) on one side, and a plug unit (571) that is connected to the other side of the pipe unit (575) on one side and connected to the ventilation hole (567) on the other side.

[0107] The plug unit (571) is formed in a bent shape, and a plug portion (573) that is inserted into a ventilation hole is formed on the other side of the plug unit (571).

[0108] The ventilation hole (567) completely penetrates one side and the other side of the measuring unit body (565), and a shielding means (584) for shielding the ventilation hole (567) from the outside is installed on the other side of the ventilation hole (567). As the ventilation hole (567) is formed to completely penetrate, maintenance such as cleaning of the radiation temperature measuring unit (560) can be easily performed.

[0109] Meanwhile, the filter section (564) of the radiation temperature measuring unit (560) is formed such that the emissivity, which is the amount of energy emitted from the surface of an object during thermal radiation, varies depending on the temperature. That is, the amount of light energy emitted from the roasting chamber (120) or the object may vary depending on the temperature conditions of the filter section (564), so the measured temperature (T) of the sensing section (561) that receives infrared rays passing through the filter section (564) measure It is necessary to correct ).

[0110] Accordingly, the roasting device (1) according to the present embodiment has a roasting chamber (120) or a measured temperature (T) of the object measured by a radiation temperature measuring unit (560). measure ) is the external temperature (T) of the roasting chamber (120). outside Corrected based on ) the actual temperature (T) of the roasting chamber or the object real The roasting device (1) calculates the actual temperature (T) by receiving data from the temperature measuring unit and controlling the heat source unit (510, 520, 530, 540). real It may further include a control unit (not shown) that calculates ).

[0111] At this time, the actual temperature (T real ) is the above measured temperature (T measure At the above external temperature (T outside It is calculated by considering the change in emissivity of the filter section based on ).

[0112] Therefore, the actual temperature (T real ) and the above measured temperature (T measure ) satisfies the following relationship.

[0114]

[0115] T real,k is the corrected actual temperature of the object (based on absolute temperature)

[0116] T measure,k is the measured temperature of the object measured by the sensing unit (based on absolute temperature)

[0117] Toutside,c is the external temperature of the roasting chamber (based on Celsius),

[0118] T outside,k is the external temperature of the roasting chamber (based on absolute temperature),

[0119] E0 is the emissivity of the filter section at 0 degrees Celsius,

[0120] e is the change in emissivity per 1 degree of absolute temperature (or 1 degree of Celsius) of the filter section.

[0122] That is, the roasting device (1) according to an embodiment of the present invention has the advantage of being able to measure the temperature more accurately and quickly by measuring infrared rays emitted from the roasting chamber (120) or the surface of the object and measuring the temperature of the roasting chamber (120) or the object.

[0123] In addition, there is an advantage in that more accurate temperature measurement is possible by compensating for changes in the emissivity of the filter section that occur depending on temperature conditions.

[0125] FIG. 14 is a drawing showing the internal configuration of a roasting device according to another embodiment of the present invention.

[0126] This embodiment differs only in the configuration for controlling the preheating operation of the roasting device by measuring the temperature of the space outside the chamber of the roasting device, but in other configurations, it is substantially the same as the configuration of the roasting device illustrated in FIGS. 1 to 13; therefore, the following description will focus on the characteristic parts of this embodiment.

[0127] First, referring to FIG. 14, the roasting device (1) according to an embodiment of the present invention has a roasting chamber portion (120) disposed inside the roasting device (1) and a chamber outer space (160) between a casing unit (190) that surrounds the roasting chamber portion (120) and forms the outer shape of the roasting device (1), and a chamber outer space temperature (T outside ) is measured, and the measured temperature (T) inside the roasting chamber (121) is measured. measure) and the temperature of the space outside the chamber (T outside ) performs a preheating operation until each reaches the internal temperature of the reference chamber and the external space temperature of the reference chamber.

[0128] Measured temperature inside the roasting chamber (T measure When the roasting device (1) determines whether the preheating operation has ended by determining only whether the temperature reaches the internal temperature of the reference chamber, the external space temperature (T) of the chamber outside If the temperature is excessively low or high, a problem arises in which the roasting quality deteriorates due to unintended heat transfer between the roasting chamber (121) and the space outside the chamber (160) during the roasting process after the preheating is finished.

[0129] Accordingly, the roasting device (1) according to the present embodiment has, based on infrared rays emitted from the inner surface of the roasting chamber part (120) heated by the heat source part (310, 320, 330) or the surface of the object, the temperature of the roasting chamber (120) or the object and the temperature of the chamber outside space (160) between the casing unit (190) and the roasting chamber part (120) of the chamber outside space (T outside It includes a radiation temperature measuring unit (560) for measuring ) and the chamber external space temperature (T) of the chamber external space (160). outside The determination of whether the preheating operation is terminated is also taken into account whether the external space temperature of the reference chamber has been reached. At this time, the external space temperature of the reference chamber is formed in the range of 55 degrees Celsius to 90 degrees Celsius.

[0130] The radiation temperature measuring unit (156) includes a sensing unit that measures the temperature of an object based on infrared rays and faces the roasting chamber, an external space temperature measuring unit for measuring the temperature of the external space outside the chamber, and a substrate on which the sensing unit and the external space temperature measuring unit are mounted.

[0131] Meanwhile, the roasting device (1) includes a radiant heat source unit (320) that provides radiant heat to a roasting chamber (120), a convective heat source unit (310) that provides convective heat to the roasting chamber (120) and includes an inlet pipe (311) through which airflow is guided toward the roasting chamber unit, and a heater unit (312) installed in the inlet pipe (311), and a conductive heat source unit (330) that surrounds at least a part of the outer surface of the roasting chamber unit (120) and provides conductive heat toward the roasting chamber (121) through the roasting chamber unit (120).

[0132] The radiant heat source (320) is installed in the upper unit (110) while positioned inside the roasting chamber (121), and a through hole is formed in the upper unit (110) to allow a portion of the light emitted from the radiant heat source (320) to leak to the chamber outside space (160). That is, the light emitted from the radiant heat source (320) is transmitted to the roasting chamber (121) to heat the roasting chamber (121) and / or the object, and a portion of the light may leak directly from the radiant heat source (320) to the chamber outside space (160) through the through hole, or may be reflected inside the roasting chamber (121) and leak to the chamber outside space (160) through the through hole. The chamber outside space (160) may be heated by the leaked light. In addition, heat can be transferred from the upper unit (110), which is heated together by the heat supplied to the roasting chamber (121), to the chamber outside space (160).

[0133] Hereinafter, a control method for a roasting device (1) according to an embodiment of the present invention will be described in detail.

[0134] Figure 15 is a diagram showing a control method for the roasting device of Figure 14.

[0135] Referring to FIG. 15, a roasting preheating operation initiation step (S310) is first performed to preheat the roasting chamber (121) of the roasting device (1).

[0136] Next, a step (S320) for determining whether the preheating condition is satisfied is performed to determine whether the preheating state of the roasting chamber (121) satisfies the preheating condition. At this time, the preheating condition is the measured temperature (T) of the roasting chamber (120) according to preset temperature profile information. measure Whether ) has reached the above-mentioned internal reference temperature and the chamber external space temperature (T outside ) may be whether the external space temperature of the above reference chamber has been reached.

[0137] In the step of determining whether the preheating condition is satisfied (S320), the roasting device (1) determines the measured temperature (T) of the roasting chamber (120) according to the temperature profile information. measure Whether ) has reached the above-mentioned internal temperature and the temperature of the chamber outside space (T) of the roasting chamber (120). outside ) determines whether the external space temperature of the above reference chamber has been reached.

[0138] In the step of determining whether the preheating condition is satisfied (S320), if the preheating state of the roasting chamber (121) satisfies the preheating condition, a roasting operation initiation step (S320) is performed to initiate the roasting operation. Meanwhile, in the step of determining whether the preheating condition is satisfied (S320), if the preheating state of the roasting chamber (121) does not satisfy the preheating condition, a roasting preheating operation (S310) is performed.

[0139] Next, a roasting termination determination step (S340) is performed to determine whether the roasting is finished.

[0140] Next, an additional roasting proceeding determination step (S350) is performed to determine whether to proceed with additional roasting. If it is determined in the additional roasting proceeding determination step (S350) that additional roasting is to be performed, a roasting reservation operation start step (S310) is performed according to preset roasting profile information. At this time, if additional roasting is to be performed, the preheating time may be shortened because the roasting chamber is heated by the previous roasting operation. Meanwhile, if additional roasting is not to be performed in the additional roasting proceeding determination step (S350), the control is terminated.

[0141] According to the proposed embodiment, a preheating function for the roasting chamber (120) can be provided to further improve the roasting quality.

[0142] The system or device described above may be implemented as a hardware component, a software component, and / or a combination of a hardware component and a software component. For example, the system, device, and component described in the embodiments may be implemented using one or more general-purpose or special-purpose computers, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The management device may execute an operating system (OS) and one or more software applications executed on said operating system. Additionally, the management device may access, store, manipulate, manage, and generate data in response to the execution of the software. For ease of understanding, the management device may be described as being used as a single one, but those skilled in the art will understand that the management device may include a plurality of processing elements and / or a plurality of types of processing elements. For example, the management unit may include multiple processors or one processor and one controller. In addition, other processing configurations, such as parallel processors, are also possible.

[0143] Software may include computer programs, code, instructions, or a combination of one or more of these, and may configure a management device to operate as desired or command the management device independently or collectively. Software and / or data may be permanently or temporarily embodied in any type of machine, component, physical device, virtual equipment, computer storage medium or device, or transmitted signal wave in order to be interpreted by the management device or to provide instructions or data to the management device. Software may be distributed over networked computer systems and may be stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

[0144] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention.

Claims

Claim 1 A roasting device for heating a target object comprises: a cylindrical roasting chamber formed extending in an upward and downward direction while stirring the target object inside, and a rotary stirring unit rotated to stir the target object accommodated in the roasting chamber, wherein the rotary stirring unit includes a roasting chamber portion rotated around a stirring axis formed in a vertical direction; a casing unit surrounding the roasting chamber portion; and a heat source portion including a first heat source portion providing radiant heat to the roasting chamber portion. and a radiation temperature measuring unit that measures the temperature of the roasting chamber or the object and the temperature of the chamber outside space between the casing unit and the roasting chamber part based on infrared rays emitted from the inner surface of the roasting chamber part heated by the heat source part or the surface of the object; and performs a preheating operation until the internal temperature of the roasting chamber and the temperature of the chamber outside space reach preset reference internal temperature of the chamber and reference external space temperature of the chamber, wherein the radiation temperature measuring unit includes a sensing part facing the roasting chamber and measuring the temperature of the object based on infrared rays, an external space temperature measuring unit for measuring the temperature of the chamber outside space, and a substrate on which the sensing part and the external space temperature measuring unit are mounted, and the measured temperature (T) of the roasting chamber or the object measured by the radiation temperature measuring unit measure ) is the temperature of the space outside the chamber (T outside Calculate the actual temperature of the roasting chamber or the object by correcting based on ), and a measurement hole is formed through the upper unit of the roasting chamber and communicates with the roasting chamber, and the radiant temperature measuring unit includes a sensing part that measures the temperature of the object based on infrared rays, a measuring unit body disposed on the upper surface of the upper unit and having a body-side through hole formed therein that communicates with the roasting chamber, a substrate disposed on one side of the measuring unit body on which the sensing part is mounted, and a filter part disposed in front of the sensing part through which light of a preset wavelength band passes, wherein the body-side through hole communicates with the measuring hole and the sensing part is located in the body-side through hole, one side of the filter part faces the sensing part and the other side faces the roasting chamber directly, the emissivity of the filter part changes according to temperature, and the actual temperature (T real ) is the above measured temperature (T measure At the temperature of the space outside the chamber (T) outside A roasting device characterized by being calculated by considering the change in emissivity of the filter section based on ). Claim 2 A roasting device according to claim 1, wherein the radiation temperature measuring unit is positioned on an upper unit positioned above the roasting chamber and faces toward the internal space of the roasting chamber. Claim 3 A roasting device according to claim 2, characterized in that the external space temperature of the reference chamber is formed in the range of 55 degrees Celsius to 90 degrees Celsius. Claim 4 delete Claim 5 delete Claim 6 In paragraph 1, the above actual temperature (T real ) and the above measured temperature (T measure A roasting device characterized by satisfying the following relationship. T real,k is the corrected actual temperature (based on absolute temperature) T of the object measure,l T is the measured temperature (based on absolute temperature) of the object measured by the sensing unit. outside,c is the external temperature of the roasting chamber (in Celsius), T outside,k ε is the external temperature of the roasting chamber (based on absolute temperature), E0 is the emissivity of the filter section at 0 degrees Celsius, and e is the change in emissivity per 1 degree of absolute temperature (or 1 degree Celsius) of the filter section. Claim 7 A roasting device according to claim 2, wherein the first heat source of the heat source is installed in the upper unit while positioned inside the roasting chamber, and the upper unit has a through hole formed therein to allow a portion of the light emitted from the first heat source to leak out toward the space outside the chamber. Claim 8 A roasting device according to claim 7, wherein the heat source unit further comprises a second heat source unit including an inlet pipe that provides convective heat to the roasting chamber and guides airflow toward the roasting chamber, and a heater unit installed in the inlet pipe, and a third heat source unit that surrounds at least a portion of the outer surface of the roasting chamber and provides conductive heat toward the roasting chamber through the roasting chamber. Claim 9 A method for controlling a roasting device according to claim 1 comprises: a roasting preheating operation initiation step for performing preheating for a roasting chamber; a preheating condition satisfaction determination step for determining whether the preheating state of the roasting chamber satisfies a preheating condition; and a roasting operation initiation step for initiating a roasting operation; wherein the preheating condition is a measured temperature (T) of the roasting chamber (120) according to preset temperature profile information. measure Whether ) has reached a preset reference internal temperature and the chamber external space temperature (T) for the chamber external space formed between the roasting chamber and the casing unit. outside Whether ) has reached the preset reference chamber external space temperature, and the measured temperature (T) of the roasting chamber or the object inside the roasting chamber measured by the radiation temperature measuring unit. measure ) is the temperature of the space outside the chamber (T outside A method for controlling a roasting device characterized by calculating the actual temperature of the roasting chamber or the object by correcting based on ). Claim 10 A method for controlling a roasting device according to claim 9, characterized in that the external space temperature of the reference chamber is formed in the range of 55 degrees Celsius to 90 degrees Celsius. Claim 11 A method for controlling a roasting device according to claim 9, further comprising a step for determining whether to proceed with additional roasting, wherein if it is determined in the step for determining whether to proceed with additional roasting that additional roasting is to proceed, the roasting preheating operation start step and the roasting operation start step are continuously performed according to preset roasting profile information.

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