KR20230045830A - Roasting apparatus - Google Patents

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 capable of stirring and roasting an object in a roasting chamber. The roasting device according to the present invention comprises: a cylindrical roasting chamber which stirs the object inside and extends in up and down directions; and a rotation stirring unit which is rotated to stir the object accommodated in the roasting chamber. The rotation stirring unit includes: a roasting chamber unit; a heat source unit; and a radiation temperature measuring unit. The roasting chamber unit rotates around a stirring axis formed in a vertical direction. The heat source unit supplies heat to the roasting chamber unit, and includes a first heat source unit which provides convective heat inside the roasting chamber by providing hot air to the roasting chamber unit. The radiation temperature measuring unit measures a temperature of the roasting chamber or the object based on infrared rays emitted from an inner surface of the roasting chamber unit or a surface of the object heated by the heat source unit. The present invention calculates a real temperature of the roasting chamber or the object by correcting a measured temperature (T_measure) of the roasting chamber or the object measured in the radiation temperature measuring unit based on an outside temperature (T_outside) of the roasting chamber. The present invention reduces a roasting preheating operation time.

Description

Roasting Apparatus {ROASTING APPARATUS}

The present invention relates to a roasting apparatus, and more particularly, to a roasting apparatus in which an object is roasted while being stirred in a roasting chamber.

Recently, a grain roaster or coffee roaster capable of easily and automatically roasting grains such as coffee beans at a professional coffee shop or at home has been introduced.

Such a coffee roaster automatically roasts coffee beans when a roasting operation mode is set using a temperature sensor and a microcomputer.

Conventional automatic coffee roasters for businesses are mainly a horizontal rotating drum type, which rotates the drum forward and backward to stir the beans so that the beans are evenly roasted (Patent No. 342091, Patent No. 369539, Patent No. 463341, Patent No. 804106 No., Patent Registration No. 887985, Patent Registration No. 963695, Patent Publication No. 2009-30655, Patent Publication No. 2010-38802).

However, in the case of a conventional automatic coffee roaster, a method of heating a horizontal rotating drum using only one heat source, such as direct gas combustion, is provided. there is.

Accordingly, an object of the present invention is to provide a roasting apparatus with improved productivity and a control method thereof by reducing roasting preheating operation time.

In addition, the present invention is intended to provide a roasting apparatus and a control method for roasting desired by a user by more effectively measuring the roasting progress of an object.

In the roasting apparatus according to an aspect of an embodiment of the present invention, in the roasting apparatus for heating an object, the object is stirred inside and the cylindrical roasting chamber extending in the vertical direction and stirring the object accommodated in the roasting chamber A roasting chamber portion rotating about a stirring shaft formed in a vertical direction; a heat source unit including a first heat source unit that supplies heat to the roasting chamber unit and provides hot air to the roasting chamber unit to provide convective heat to the inside of the roasting chamber; And a radiation temperature measuring unit for measuring the temperature of the roasting chamber or the object based on infrared rays emitted from the inner surface of the roasting chamber heated by the heat source or the surface of the object; including, in the radiation temperature measuring unit The measured temperature (T _measure ) of the roasting chamber or the object is corrected based on the outside temperature (T _outside ) of the roasting chamber to calculate the real temperature of the roasting chamber or the object.

In addition, the radiant temperature measurement unit may be disposed on an upper unit disposed above the roasting chamber and face toward an inner space of the roasting chamber.

In addition, a measuring hole is formed through the upper unit and communicates with the roasting chamber, and the radiation temperature measuring unit includes a sensing unit for measuring the temperature of an object based on infrared rays and disposed on an upper surface of the upper unit, A measurement unit body having a body-side through-hole communicating with the roasting chamber, a substrate disposed on one side of the measurement unit body and mounting the sensing unit, and a substrate disposed in front of the sensing unit through which light of a predetermined wavelength band passes. A filter unit, wherein the body-side through-hole communicates with the measuring hole and the sensing unit is located in the body-side through-hole, one surface of the filter unit facing the sensing unit, and a rear surface directly facing the roasting chamber In addition, the emissivity of the filter unit may vary depending on the temperature.

In addition, the substrate is disposed in an external space of the roasting chamber and includes an external space temperature measuring unit for measuring the temperature of the external space, and the real temperature T _real is the measured temperature T _measure It can be calculated considering the emissivity change of the filter unit based on the external temperature (T _outside ).

In addition, the real temperature (T _real ) and the measured temperature (T _measure ) may satisfy the following relational expression.

T _real,k is the calibrated real temperature of the object (based on absolute temperature)

T _measure,k is the measured temperature of the object measured by the sensing unit (based on absolute temperature)

T _outside,c is the outside temperature of the roasting chamber (based on Celsius),

T _outside,k is the outside temperature of the roasting chamber (based on absolute temperature),

E ₀ is the emissivity of the filter unit at 0 degrees Celsius,

e is the change in emissivity per 1 degree of absolute temperature (or 1 degree Celsius) of the filter part

In addition, it may further include a casing forming an outer shape, and the outer space may be disposed between the casing and the roasting chamber.

In addition, the first heat source unit includes a flow pipe through which air flows, and a heating unit disposed on one side of the flow pipe to heat the flowing air, and the radiation temperature measuring unit includes an upper portion disposed above the roasting chamber. It is disposed in a unit and faces the inner space of the roasting chamber, and a measuring hole is formed through the upper unit to communicate with the roasting chamber, and the radiation temperature measuring unit measures the temperature of the object based on infrared rays A sensing unit, a measuring unit body disposed on an upper surface of the upper unit and having a body-side through hole communicating with the roasting chamber, a substrate disposed on one side of the measuring unit body and mounting the sensing unit, and the sensing unit A filter unit disposed on the front side and through which light of a predetermined wavelength band passes, wherein the body-side through-hole communicates with the measurement hole and the sensing unit is positioned in the body-side through-hole, and one surface of the filter unit is provided with the sensing unit. facing, the back side directly faces the roasting chamber, and a ventilation hole is formed in the body of the measuring unit in a direction crossing the direction in which the body-side through-hole is formed, and the body-side through-hole and the ventilation hole are They intersect with each other, and further include a ventilation unit, one side of which communicates with the flow pipe and the other side of which communicates with the ventilation hole. there is.

In addition, the ventilation unit includes a pipe unit having one side in communication with the flow pipe, and a plug unit having one side connected to the other side of the pipe unit and the other side connected to the ventilation hole, and the plug unit has a bent shape. , and a plug portion inserted into the ventilation hole may be formed on the other side of the plug unit.

In addition, the ventilation hole completely penetrates one side and the other side of the body of the measurement unit, and a shielding means for shielding the ventilation hole from the outside may be installed on the other side of the ventilation hole.

In addition, a cylindrical guide portion surrounding the measurement hole and protruding downward is formed on a lower surface of the upper unit, and the guide portion may be aligned with the measurement hole.

According to the proposed embodiment, it is possible to provide a roasting apparatus with improved productivity and a control method thereof by reducing roasting preheating operation time.

In addition, by more effectively measuring the roasting progress of the object, the roasting desired by the user can be performed.

1 is a view showing a roasting apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing a projected state of the internal configuration of the roasting apparatus of FIG. 1 .
3 is a view showing the configuration of a roasting chamber of the roasting apparatus of FIG. 1;
4 is a view showing a state of the roasting chamber of FIG. 3 viewed from above.
5 is a view showing a state in which the third heat source unit is removed from the roasting chamber unit of FIG. 3 .
6 is a view showing an upper unit of the roasting chamber of FIG. 3;
7 is a view showing a cross section of the roasting chamber of FIG. 3 .
8 is a view showing a state in which the first temperature sensing unit of the roasting apparatus of FIG. 1 is disassembled.
FIG. 9 is a cross-sectional view of the first temperature sensing unit of FIG. 8 .
10 is a view showing a control method of the roasting apparatus of FIG. 1 .
11 is a view showing the internal configuration of a roasting apparatus according to another embodiment of the present invention.
FIG. 12 is a cross-sectional view of the radiation temperature measuring unit of FIG. 11 .
13 is a diagram showing the configuration of the radiation temperature measuring unit of FIG. 11;

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various forms different from each other, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may also be the second component within the technical spirit of the present invention.

Like reference numbers designate like elements throughout the specification.

Each feature of the various embodiments of the present invention can be partially or entirely combined or combined with each other, and as those skilled in the art can fully understand, various interlocking and driving operations are possible, and each embodiment can be implemented independently of each other. It may be possible to implement together in an association relationship.

On the other hand, the potential effects that can be expected by 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 present specification, and this embodiment is intended for those with average knowledge in the art. It is provided to more completely explain the present invention, the contents shown in the drawings may be exaggerated compared to the actual implementation of the invention, and the detailed description of the configuration that is determined to unnecessarily obscure the gist of the present invention omitted or briefly described.

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

1 is a view showing a roasting apparatus according to an embodiment of the present invention, and FIG. 2 is a view showing a state in which the internal configuration of the roasting apparatus of FIG. 1 is projected. 3 is a view showing the configuration of the roasting chamber of the roasting apparatus of FIG. 1, and FIG. 4 is a view showing a state of the roasting chamber of FIG. 3 viewed from above. And, FIG. 5 is a view showing a state in which the third heat source unit is removed from the roasting chamber unit of FIG. 3 . 6 is a view showing an upper unit of the roasting chamber part of FIG. 3, and FIG. 7 is a view showing a cross-section of the roasting chamber part of FIG. 2 shows a state in which the casing 190 forming the outer shape of the roasting apparatus 1 is installed, the casing 190 is translucently projected so that the internal configuration of the roasting apparatus 1 is projected to the outside.

1 to 7, the roasting apparatus 1 according to an embodiment of the present invention is a device for heating an object such as coffee beans to roast the object, and the roasting chamber unit 100 in which the object is accommodated and roasted. ), a control panel unit 200 that displays information about the roasting status of an object and receives an operation signal from a user, and an object storage unit 400 for storing an object roasted in the roasting chamber unit 100, It includes heat source parts 310, 320, and 330 that supply heat to the roasting chamber part 100, and the roasting chamber part 100 is surrounded by a casing 190 formed of a metal material.

In more detail, the roasting chamber unit 100 is a cylindrical roasting chamber 120 in which the object is stirred in the inner space 121 and extends in the vertical direction, and to stir the object accommodated in the roasting chamber 120. A rotating stirring unit 180 including rotating stirring blade units 181, an upper unit 110 disposed on the upper side of the roasting chamber 120 and formed in a circular shape, and a lower side of the roasting chamber 120, The lower unit 130 formed in a circular shape communicates with the inner space 121 of the roasting chamber 120 and is selectively opened so that the roasted object in the inner space 121 of the roasting chamber 120 is discharged to the outside. It includes a discharge unit 150 to.

The roasting chamber 120 may be formed in a cylindrical shape extending in a vertical direction, and fixed blades 122 may be formed on an inner surface of the roasting chamber 120 so that the object is more smoothly stirred. there is. The fixed blades 122 protrude from the inner surface of the roasting chamber 120, and the protruding height of the fixed blades 122 increases from the bottom to the top of the roasting chamber 120.

The discharge unit 150 includes a door unit (not shown) that is opened or closed by an operation signal from a control unit (not shown), and a lever for forcibly opening the door unit by a user in an emergency regardless of a control signal from the control unit. A part (not shown) may be included. The discharge unit 150 is formed to obliquely extend toward the object storage unit 400, and when the door of the discharge unit 150 is opened, the roasted objects may be supplied to the object storage unit 400 side.

Then, the stirring blade units 181 of the rotary stirring unit 180 are rotated around a stirring shaft formed in a vertical direction. Therefore, in a state in which the roasting chamber unit 100 according to the present embodiment extends in the vertical direction, the stirring wing units 181 of the rotary stirring unit 180 are rotated around the stirring shaft formed in the vertical direction, By stirring the object, roasting of the object is performed more efficiently and there is an advantage in that the roasting device 1 can be arranged more efficiently.

On the other hand, the heat source units 310, 320, and 330 include a first heat source unit 310 that provides hot air flow to the roasting chamber 120 and provides convection heat to the inside of 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 in a conductive manner, and a third heat source unit 320 that provides radiant heat to the inside of the roasting chamber 120 includes

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 and heating the flowing air. The flow pipe 311 is connected to the blow 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. For example, in the heating unit 312, a plurality of heating elements are disposed in a mesh or coil form, and air is heated while passing through the heating elements.

The second heat source unit 330 includes a second heat source unit body surrounding the outer circumferential surface in a state of being in contact with the outer circumferential surface of the roasting chamber 120, and the second heat source unit body is a band heater formed of a ceramic material ( Band Heater).

Meanwhile, in the roasting chamber 120, at least one roasting chamber-side through-hole communicating with the outside is formed, and the second heat source body is formed at a position corresponding to the roasting chamber-side through-hole in the second heat source body. A side through hole is formed.

Illustratively, the roasting device 1 further includes a sampling unit 161 capable of taking samples during the roasting process and a window unit 162 capable of visually checking the roasting process within the roasting chamber 120. And the sampling 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 unit. On the other hand, an air outlet 163 communicating with the inner space of the roasting chamber 120 is formed on the upper side of the roasting chamber 120, and the second heat source unit 330 is not disposed on the side of the air outlet 163. That is, the second heat source unit 330 is installed only up to a partial height of the outer circumferential surface of the roasting chamber 120, and the object accommodated in the inner space 121 of the roasting chamber 120 up to the height at which the second heat source unit 330 is installed can be defined as the acceptance limit of

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

The third heat source unit 320 includes a lamp unit 321 that emits radiant heat, and is installed on the upper unit 110 to provide radiant heat to the inner space 121 of the roasting chamber 120. For example, the lamp unit 321 may be a halogen lamp.

On the other hand, the upper unit 110 includes an upper unit body 111 formed in a circular shape, and the heating unit 312 of the first heat source unit 310 is fixed to the upper unit body 111, and the heated air is roasted. The radiant heat emitted from the lamp unit 321 is fixed to the first heat source arranging hole 113 and the lamp unit 321 of the third heat source unit 320 to flow into the internal space 121 of the chamber 120. The object is connected to the third heat source arranging hole 114 and the hopper unit 170 of the roasting apparatus 1 so that the object is transferred to the inner space 121 of the roasting chamber 120. An object supply hole 112 to be put into the space 121 is formed. In addition, a diffuser unit 118 whose diameter increases downward for guiding hot air supplied from the first heat source unit 310 is formed on the lower side of the upper unit 110 . The diffuser unit 118 extends from the lower surface of the upper unit 110 to the side of the rotation stirring unit 180 disposed below the roasting chamber 120, and the stirring wing unit 181 of the rotation stirring unit 180 has A recessed groove (not shown) may be formed to avoid interference with the diffuser unit 118 .

At this time, the lamp unit 331 and the third heat source arranging hole 114 of the third heat source unit 320 are provided as a pair, and the first heat source arranging hole ( 113) is placed. Also, the first heat source arranging hole 113 disposed at the center of the upper unit body 111 is formed in a circular shape, and the third heat source arranging hole 114 is formed in a rectangular shape. On the other hand, the upper unit body 111 according to the present embodiment is formed with a third heat source guide portion 119 surrounding the third heat source arrangement hole 114 and extending downward, and the third heat source guide portion ( 119) is formed in a rectangular shape corresponding to the third heat source arranging hole 114. By the third heat source guide unit 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 lamp unit 321 of the third heat source 320.

On the other hand, the roasting apparatus 1 according to the present embodiment includes a measuring unit 510, 520, 530, 540 for measuring the heat source supply temperature of the heat source units 310, 320, 330 supplied to the roasting chamber 120 include more

The radiation temperature measurement unit 510 measures the radiation temperature of the object accommodated in the inner space 121 of the roasting chamber 120, and is disposed in the upper unit 110 disposed above the roasting chamber 120 for roasting. At this time, the upper unit body 111 is formed with a measuring hole 115 penetrating in the vertical direction. 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 in the roasting process by infrared rays emitted from the surface of the object. Therefore, compared to the conventional roasting apparatus that detects only the temperature change inside the roasting chamber 120, the roasting apparatus 1 according to the embodiment of the present invention can accurately detect the temperature of the object and accurately perform the roasting intended by the user. There are advantages to being In the process of performing a preheating operation for preheating the roasting chamber 120 before the object is put into the roasting chamber 120, the radiant temperature measuring unit 510 forms the bottom surface of the roasting chamber 120. The surface temperature of the unit 130 may be sensed.

On the other hand, a number of experiments were conducted as follows with respect to the installation position of the radiation temperature measurement unit 510 according to this embodiment, and in this embodiment, the upper unit 110, which is the optimal installation position of the radiation temperature measurement unit 510 ) It was installed so as to look downward from the side, that is, from the upper unit 110 side toward the inner space 121 of the roasting chamber 120.

installation location filter scratches filter heat damage measurement accuracy
(quid pro quo) measurement accuracy
(chamber) Upper Roasting Chamber X X height very high Central part of the roasting chamber O O height very low bottom of roasting chamber O O very high very low

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

FIG. 8 is a view showing a disassembled state of the first temperature sensing unit of the roasting apparatus of FIG. 1 , and FIG. 9 is a cross-sectional view of the first temperature sensing unit of FIG. 8 .

Referring to FIGS. 8 and 9 , the radiation temperature measuring unit 510 includes a sensing unit 511 for measuring temperature and a filter disposed in front of the sensing unit 511 and through which light of a preset wavelength band passes. A first bracket 513 fixed to the unit 514 and the upper unit body 111 of the roasting unit 100 and having a first through hole 519 formed therein, and one side of the first bracket 513 The second bracket 521 is contacted and fixed and the sensing unit 511 is inserted and the second through hole 526 aligned with the first through hole 519 is formed, and the sensing unit 511 is mounted and the second through hole 526 is formed. A substrate 512 fixed to the other side of the bracket 521 is included.

At this time, the sensing unit 511, the first through hole 519, the second through hole 526, and the filter unit 514 are aligned with the measuring hole 115 of the upper unit 110, and the first bracket 513 ) and the second bracket 521, the filter unit 514 is installed.

The sensing unit 511 senses infrared rays emitted 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 unit 511 may be an IR sensor by way of example.

The filter unit 514 may be formed of a material that is illustratively transparent, such as glass or silicon, and is less deformable to heat. pass

Meanwhile, the first bracket 513 includes a first bracket body 515 forming an outer shape of the first bracket 513 and having a first through hole 519 disposed in the center, and the first bracket body 515. It includes a pair of protrusions 518 protruding upward from one side, and a recessed space 517 is formed between the protrusions 518, and the lower side of the first bracket body 515 is attached to the upper unit body 111. A pair of first bracket fixing parts 516 through which the first fastening member 630 is fastened protrudes.

The second bracket 521 is formed on one side of the second bracket body 522 forming the outer shape of the second bracket 521 and the second bracket body 522, and is formed in the recessed space of the first bracket 513. The inserted portion 523, the substrate seating surface 524 disposed on the upper surface of the second bracket 521 and on which the substrate 512 is seated, and the edge of the substrate seating surface 524 protrude upward, It includes a pair of substrate fixing protrusions 525 on one side and the other side of the substrate 512 .

The filter unit 514 is aligned with the first through hole 519 disposed in the recessed space 517, the recessed space 517 of the first bracket 513 and the insertion portion of the second bracket 521 ( 523), and the first bracket 513 and the second bracket 521 are in a state in which the insertion part 523 of the second bracket 521 is inserted into the recessed space 517 of the first bracket 513 The protrusion 518 of the first bracket 513 and the insertion portion 523 of the second bracket 521 may be mutually fixed by the second fastening member 620 integrally penetrating. That is, in a state where the filter unit 514 closes the first through hole 519, the first bracket 513 and the second bracket 521 are firmly fixed to each other with the filter unit 514 interposed therebetween. , Foreign matter in the inner space 121 of the roasting chamber 120 penetrates the radiation temperature measuring unit 510 side and outward through the first through hole 519 communicating with the measuring hole 115 of the roasting chamber 120. can prevent doing so. Meanwhile, an elastic member (not shown) made of rubber or silicone is disposed between at least one of the filter unit 514 and the first bracket 513 and between the filter unit 514 and the second bracket 521 to close the space between them. It seals firmly and can suppress breakage of the filter unit 514 .

On the other hand, the sensing unit 511 is inserted into the second through hole 526 of the second bracket 521, and the third fastening member 610 in a state in which the substrate 512 is seated on the seating surface 524 passes through the substrate 512 and is fixed to the fastening hole 527 of the second bracket 521, so that the substrate 512 and the second bracket 521 can be firmly fixed.

The substrate 512 may be a PCB formed in a plate shape, and the substrate 512 is a roasting chamber capable of measuring the external temperature of the roasting chamber 120 adjacent to the position where the substrate 512 is installed, that is, the roasting chamber 120. An external temperature measuring device (not shown) is provided. That is, the radiation temperature measurement unit 510 according to the present embodiment may measure the radiation temperature of the inner space 121 of the roasting chamber 120 and the temperature of the outer space of the roasting chamber 120 .

In addition, a cylindrical guide part 116 is formed on the lower surface of the upper unit 110 to surround the measuring hole 115 and protrude downward, and the guide part 116 is aligned with the measuring hole 115. That is, as the guide portion 116 surrounding the measuring hole 115 protrudes toward the inner space 121 of the roasting chamber 120, in the inner space 121 of the roasting chamber 120, generated during the roasting process. Contamination of the surface of the filter unit 514 by being introduced into the measuring hole 115 can be suppressed. The sensing unit 511 may irradiate light for measurement to the inner space 121 of the roasting chamber 120 through the measuring hole 115 surrounded by the guide unit 116 or receive light emitted from the object. there is.

3 to 7 again, the measuring units 510, 530, 540, and 550 of the roasting apparatus 1 according to the present embodiment are in the roasting chamber 120 by the first heat source unit 310. A convection temperature measuring unit 530 and a conduction temperature measuring probe 541 disposed on the flow path of the supplied hot air to measure the convection temperature of the hot air and the second heat source unit 330 and the roasting chamber 120 A conduction temperature measurement unit 540 disposed between the outer circumferential surface and measuring the conduction temperature of the second heat source unit 330, and a conduction temperature measurement unit 540 installed on the lower side of the roasting chamber 120 and in direct contact with the object during the roasting process, thereby reducing the temperature of the object. A contact temperature measurement unit 550 for measuring temperature is further included.

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 of the convection temperature measuring probe 531 is the heating unit 312 It is located on the downstream side of ) and can measure the temperature of the hot air passing through the heating unit 312.

In addition, the conduction temperature measurement probe 541 of the conduction temperature measurement unit 530 is disposed between the second heat source unit 330 and the roasting chamber 120, and the inner surface of the second heat source unit body 331 and the roasting chamber The outer circumferential surface of (120) is simultaneously contacted. At this time, the conduction temperature measurement probe 541 of the conduction temperature measurement unit 540 is disposed at the most spaced position from the roasting chamber-side through-hole and the second heat source unit body-side through-hole. That is, the through-hole on the roasting chamber side and the through-hole on the body side of the second heat source unit communicate with the outside, and since the heating element of the second heat source unit 330 is not disposed at the corresponding position, the measured temperature is relatively high. The conduction temperature measurement probe 541 of the conduction temperature measurement unit 540 is disposed at the most spaced position from the through-hole on the roasting chamber side and the through-hole on the body side of the second heat source unit to measure the conduction temperature based on the highest temperature. do.

Hereinafter, a method of controlling the roasting apparatus according to the present embodiment, particularly a method of controlling a preheating operation, will be described in detail.

10 is a view showing a control method of the roasting apparatus of FIG. 1 .

Referring to FIG. 10, a preheating operation of raising the temperature of the inner space 121 of the roasting chamber 120 to a desired level of preheating temperature is performed prior to roasting by introducing an object into the roasting apparatus 1 according to the present embodiment. do. The roasting apparatus 1 according to the present embodiment has the advantage of increasing the temperature of the inner space 121 to a desired preheating temperature more quickly by performing the preheating operation by using three heat sources in combination. In addition, the roasting apparatus 1 according to the present embodiment controls the three heat sources differently according to the user's taste after the preheating operation is finished, so that the user's desired flavor can be roasted.

First, a first heat source preheating operation step S110 is performed in which the first heat source provides hot air to the inner space of the roasting chamber.

Then, in the first heat source preheating operation step (S110), when the measured first preheating temperature (T ₁ ) is equal to or greater than the first reference temperature (T _ref1 ) (S120), the first heat source unit 310 1 A first heat source temperature maintaining operation step ( S130 ) of providing convection heat is performed so that the preheating temperature T ₁ is maintained at the first reference temperature T _ref1 . In this case, the first preheating temperature T ₁ according to the present embodiment may be the convection temperature of the hot air measured by the convection temperature measuring unit 530, and in the first heat source temperature maintaining operation step (S130), the first heat source preheating operation A lower level of power than that of step S110 is supplied to the first heat source unit 310 .

Then, when the measured first preheating temperature T ₁ is smaller than the first reference temperature T _ref1 ( S120 ), the first heat source preheating operation step S110 is repeatedly performed.

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

In the second heat source preheating operation step (S130), when the measured second preheating temperature (T ₂ ) is greater than or equal to the second reference temperature (T _ref2 ) (S150), the second heat source unit 330 operates at the second preheating temperature ( A second heat source temperature maintaining operation step (S160) providing conduction heat is performed so that T ₂ ) is maintained at the second reference temperature (T _ref2 ) (S160). At this time, the second preheating temperature (T ₂ ) according to the present embodiment may be the conduction temperature of the second heat source unit 330 measured by the conduction temperature measuring unit 540, and the second heat source temperature maintaining operation step (S160) In the second heat source preheating operation step ( S140 ), power of a lower level is supplied to the second heat source unit 330 .

Then, when the measured second preheating temperature (T ₂ ) is smaller than the second reference temperature (T _ref2 ) (S150), the second heat source preheating operation step (S140) is repeatedly performed.

Then, a third heat source preheating operation step S170 in which the third heat source unit 320 provides radiant heat to the inner space 121 of the roasting chamber 120 is performed.

In the third heat source preheating operation step (S170), when the measured third preheating temperature (T ₃ ) is greater than or equal to the third reference temperature (T _ref3 ) (S190), the third heat source unit 320 controls the third preheating temperature (T ₃ ) A third heat source temperature maintaining operation step ( S190 ) of providing radiant heat is performed so that the third reference temperature (T _ref3 ) is maintained. In this case, the third preheating temperature (T ₃ ) according to the present embodiment may be the radiation temperature of the export space 121 of the roasting chamber 120 measured by the radiation temperature measurement unit 510, and the third heat source temperature maintenance operation In step S190 , power having a lower level than that of the third heat source preheating operation step S170 is supplied to the third heat source unit 320 .

And, when the measured third preheating temperature (T ₃ ) is smaller than the third reference temperature (T _ref3 ) (S180), the third heat source preheating operation step (S170) is repeatedly performed.

Next, when the fourth preheating temperature T ₄ , which is the measured temperature outside the roasting chamber 120 , rises to the fourth reference temperature T _ref4 ( S200 ), the preheating operation is terminated.

Then, when the measured fourth preheating temperature (T ₄ ) is smaller than the fourth reference temperature (T _ref4 ) (S200), the third heat source temperature maintaining operation (S190) is repeatedly performed. At this time, the operation of maintaining the temperature of the first heat source (S130) and the operation of maintaining the temperature of the second heat source (S160) are continuously performed.

That is, the measurement positions of the first preheating temperature (T ₁ ), the second preheating temperature (T ₂ ), the third preheating temperature (T ₃ ) and the fourth preheating temperature (T ₄ ) according to the present embodiment are formed differently from each other. , the first preheating temperature (T ₁ ), the second preheating temperature (T ₂ ) and the third preheating temperature (T ₃ ) are the first heat source unit 310, the second heat source unit 330 and the third heat source unit 320 ) Convection temperature, conduction temperature, and radiation temperature of the heat transferred from, and the fourth preheating temperature (T ₄ ) is the temperature of the inner space 121 of the roasting chamber 120 as the temperature of the outer space adjacent to the roasting chamber 120. is the temperature at which .

According to the proposed embodiment, it is possible to provide a roasting apparatus with improved productivity and a control method thereof by reducing roasting preheating operation time.

In addition, by more effectively measuring the roasting progress of the object, the roasting desired by the user can be performed.

11 is a view showing the internal configuration of a roasting apparatus according to another embodiment of the present invention. Further, FIG. 12 is a view showing a cross section of the radiation temperature measuring unit of FIG. 11, and FIG. 13 is a view showing the configuration of the radiation temperature measuring unit of FIG.

This embodiment has only a difference in the configuration of the radiation temperature measuring unit and the method for correcting the radiation temperature measurement result, but in other configurations, since it is substantially the same as the configuration of the roasting apparatus shown in FIGS. 1 to 10, the following In , the characteristic parts of this embodiment are mainly described.

11 to 13, the roasting apparatus 1 according to the embodiment of the present invention is accommodated in a cylindrical roasting chamber 120 and a roasting chamber 120 extending in the vertical direction while the object is stirred therein. It includes a rotation stirring unit 180 that is rotated to stir the object to be, and the rotation stirring unit 180 includes a roasting chamber unit 100 that rotates around an agitation shaft formed in a vertical direction, and a roasting chamber unit ( 100), and a heat source unit including a first heat source unit 310 supplying hot air to the roasting chamber unit 100 to provide convective heat to the inside of the roasting chamber. In addition, the roasting device 1 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 unit, the radiation temperature of which is measured. A measuring unit 560 is included. The radiation temperature measuring unit 560 is disposed on the upper unit 110 disposed above the roasting chamber 120 and faces the inner space of the roasting chamber 120 . A measuring hole 115 is formed through the upper unit 110 and communicates with the roasting chamber 120 .

In addition, a cylindrical guide part 116 is formed on the lower surface of the upper unit 110 to surround the measuring hole 115 and protrude downward, and the guide part 116 is aligned with the measuring hole 115. That is, as the guide portion 116 surrounding the measuring hole 115 protrudes toward the inner space 121 of the roasting chamber 120, in the inner space 121 of the roasting chamber 120, generated during the roasting process. Contamination of the surface of the filter unit 514 by being introduced into the measuring hole 115 can be suppressed. The sensing unit 511 may irradiate light for measurement to the inner space 121 of the roasting chamber 120 through the measuring hole 115 surrounded by the guide unit 116 or receive light emitted from the object. there is.

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 FIGS. 5 and 7 ). The flow pipe 311 is connected to the blow 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. For example, in the heating unit 312, a plurality of heating elements are disposed in a mesh or coil form, and air is heated while passing through the heating elements.

The radiation temperature measurement unit 560 includes a sensing unit 561 for measuring the temperature of an object based on infrared rays, and a body-side through hole 566 disposed on the upper surface of the upper unit 110 and communicating with the roasting chamber 120. ) is formed, a substrate 562 disposed on one side of the measurement unit body 565 and on which the sensing unit 561 is mounted, and a substrate 562 disposed in front of the sensing unit 561 and having a predetermined wavelength It includes a filter unit 564 through which the light of the band passes. The sensing unit 561 may be illustratively formed in a columnar shape or, more specifically, in a cylindrical shape.

The substrate 562 is disposed in an external space of the roasting chamber 120 and includes an external space temperature measurement unit (not shown) for measuring the temperature of the external space. The external space is disposed between the 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 board 562, and the board 562 is connected by the first fastening member 581 penetrating the board 562 and the washer member 582. It is fixed to the measuring unit body 565.

The measuring unit body 565 may be formed as a single body for example, and a fastening hole penetrating the lower surface through the upper surface is formed in the measuring unit body 565 . Then, the measuring 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.

The body-side through-hole 566 communicates with the measurement hole 115 of the upper unit 110, and the sensing unit 561 and the filter unit 564 are positioned in the body-side through-hole 566. At this time, one side of the filter unit 564 faces the sensing unit 561, and the back side directly faces the roasting chamber 120.

A ventilation hole 567 is formed in the measurement unit body 565 in a direction crossing the direction in which the body-side through-hole 566 is formed, and the body-side through-hole 566 and the ventilation hole 567 cross each other. do. At this time, the filter unit 564 is spaced apart from the roasting chamber 120 with the ventilation hole 567 interposed therebetween.

The roasting apparatus 1 according to the embodiment of the present invention further includes a ventilation unit 570 having one side communicated with the flow pipe 311 and the other side communicated with the ventilation hole 567. The air flow flowing into the ventilation hole 567 through the ventilation unit 570 is formed toward the back side of the filter unit 564 (the surface facing the roasting chamber 120).

That is, dust generated during the roasting process is prevented from flowing into the measurement hole 116 by the guide unit 116, and when dust flows into the measurement hole 116, the filter unit is removed from the ventilation unit 570. Since the dust is removed by the flow of air flowing toward the rear side of the filter unit 564, contamination of the filter unit 564 can be minimized. In addition, the air flow generated from the ventilation unit 570 toward the measuring hole 116 is formed toward the inner space 121 of the roasting chamber 120 through the guide unit 116, and through the guide unit 116. Inflow of dust into the measurement hole 116 can be minimized.

In addition, negative pressure is formed from the outside of the guide part 116 to the inside of the guide part 116 by the ventilation part 570 that forms the air flow from the side of the filter part 564 to the outside of the guide part 116. By suppressing this, it is possible to suppress dust generated in the roasting process from flowing into the filter unit 564.

On the other hand, the ventilation unit 570 has one side connected to the pipe unit 575 communicating with the flow pipe 311, one side connected to the other side of the pipe unit 575 and a plug connected to the ventilation hole 567 on the other side. unit 571.

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

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

Meanwhile, the filter unit 564 of the radiation temperature measuring unit 560 has different emissivity, which is the amount of energy emitted from the surface of an object upon thermal radiation, depending on the temperature. That is, the amount of energy of the light emitted from the roasting chamber 120 or the object may vary depending on the temperature condition of the filter unit 564, so the measured temperature of the sensing unit 561 that receives infrared rays through the filter unit 564 ( T _measure ) needs to be calibrated.

Therefore, in the roasting apparatus 1 according to the present embodiment, the measured temperature T _measure of the roasting chamber 120 or the object measured by the radiation temperature measuring unit 560 is the external temperature of the roasting chamber 120 ( Calculate the real temperature (T _real ) of the roasting chamber or the object by correcting based on T _outside ). The roasting apparatus 1 may further include a controller (not shown) that controls the heat source units 510 , 520 , 530 , and 540 , receives data from the temperature measurement unit, and calculates a real temperature T _real .

At this time, the real temperature (T _real ) is calculated in consideration of the emissivity change of the filter part based on the external temperature (T _outside ) at the measured temperature (T _measure ).

Therefore, the real temperature (T _real ) and the measured temperature (T _measure ) satisfy the following relational expression.

T _real,k is the calibrated real temperature of the object (based on absolute temperature)

T _measure,k is the measured temperature of the object measured by the sensing unit (based on absolute temperature)

T _outside,c is the outside temperature of the roasting chamber (based on Celsius),

T _outside,k is the outside temperature of the roasting chamber (based on absolute temperature),

E ₀ is the emissivity of the filter unit at 0 degrees Celsius,

e is the change in emissivity per 1 degree of absolute temperature (or 1 degree Celsius) of the filter part

That is, the roasting apparatus 1 according to an embodiment of the present invention measures the infrared rays emitted from the surface of the roasting chamber 120 or the object to measure the temperature of the roasting chamber 120 or the object, thereby more accurate It has the advantage of being able to measure the temperature quickly.

In addition, when a change in the emissivity of the filter unit occurs according to temperature conditions, there is an advantage in that more accurate temperature measurement is possible by correcting this change.

The system or apparatus described above may be implemented as hardware components, software components, and/or a combination of hardware components and software components. For example, systems, devices and components described in the embodiments may include, 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), microprocessor, or any other device capable of executing and responding to instructions. The management device may run an operating system (OS) and one or more software applications running on the operating system. In addition, the management device may access, store, manipulate, manage, and create data in response to execution of the software. For convenience of understanding, there are cases in which one management device is used, but those skilled in the art will understand that the management device includes a plurality of processing elements and/or a plurality of types of management elements. It can be seen that it can include. For example, the management device may include a plurality of processors or one processor and one controller. Also, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, which configures the management device to operate as desired or manages it independently or collectively. You can command the device. Software and/or data may be any tangible machine, component, physical device, virtual equipment, computer storage medium or device for interpretation by, or to provide instructions or data to, a management device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed on networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer readable media.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited thereto, and it is possible to make various modifications and practice within the scope of the claims and the detailed description of the invention and the accompanying drawings, and this is also the present invention. It is natural to fall within the scope of

Claims (10)

In the roasting device for heating the object,
It includes a cylindrical roasting chamber in which an object is stirred and extends in a vertical direction, and a rotational stirring unit rotated to stir the object accommodated in the roasting chamber, wherein the rotational stirring unit is centered on a stirring shaft formed in a vertical direction. Roasting chamber portion rotated to;
a heat source unit including a first heat source unit that supplies heat to the roasting chamber unit and provides hot air to the roasting chamber unit to provide convective heat to the inside of the roasting chamber; and
A radiation temperature measuring unit for measuring the temperature of the roasting chamber or the object based on infrared rays emitted from the inner surface of the roasting chamber heated by the heat source or the surface of the object; includes,
Calculating the real temperature of the roasting chamber or the object by correcting the measured temperature (T _measure ) of the roasting chamber or the object measured by the radiation temperature measuring unit based on the external temperature (T _outside ) of the roasting chamber Roasting device, characterized in that.
According to claim 1,
The radiant temperature measuring unit is disposed on an upper unit disposed above the roasting chamber and faces toward the inner space of the roasting chamber.
According to claim 2,
A measurement hole formed through the upper unit and communicating with the roasting chamber is formed,
The radiation temperature measuring unit includes a sensing unit for measuring the temperature of an object based on infrared rays, a measuring unit body disposed on an upper surface of the upper unit and having a body-side through hole communicating with the roasting chamber, the measuring unit A substrate disposed on one side of the body and on which the sensing unit is mounted, and a filter unit disposed in front of the sensing unit and through which light of a predetermined wavelength band passes,
The body-side through-hole communicates with the measurement hole and the sensing unit is positioned in the body-side through-hole,
One side of the filter unit faces the sensing unit, and the back side directly faces the roasting chamber,
The roasting apparatus in which the emissivity of the filter unit varies depending on the temperature.
According to claim 3,
The substrate is disposed in an external space of the roasting chamber and includes an external space temperature measuring unit for measuring the temperature of the external space,
The real temperature (T _real ) is calculated in consideration of a change in emissivity of the filter unit based on the outside temperature (T _outside ) in the measured temperature (T _measure ).
According to claim 4,
The roasting apparatus, characterized in that the real temperature (T _real ) and the measured temperature (T _measure ) satisfy the following relational expression.

T _real,k is the calibrated real temperature of the object (based on absolute temperature)
T _measure,l is the measured temperature of the object measured by the sensing unit (based on absolute temperature)
T _outside,c is the outside temperature of the roasting chamber (based on Celsius),
T _outside,k is the outside temperature of the roasting chamber (based on absolute temperature),
E ₀ is the emissivity of the filter unit at 0 degrees Celsius,
e is the change in emissivity per 1 degree of absolute temperature (or 1 degree Celsius) of the filter part According to claim 4,
Further comprising a casing forming an outer shape,
The outer space is a roasting apparatus disposed between the casing and the roasting chamber.
According to claim 1,
The first heat source unit includes a flow pipe through which air flows, and a heating unit disposed on one side of the flow pipe and heating the flowing air,
The radiation temperature measuring unit is disposed on an upper unit disposed above the roasting chamber and faces toward the inner space of the roasting chamber,
A measurement hole formed through the upper unit and communicating with the roasting chamber is formed,
The radiation temperature measuring unit includes a sensing unit for measuring the temperature of an object based on infrared rays, a measuring unit body disposed on an upper surface of the upper unit and having a body-side through hole communicating with the roasting chamber, the measuring unit A substrate disposed on one side of the body and on which the sensing unit is mounted, and a filter unit disposed in front of the sensing unit and through which light of a predetermined wavelength band passes,
The body-side through-hole communicates with the measuring hole and the sensing unit is positioned in the body-side through-hole,
One side of the filter unit faces the sensing unit, and the back side directly faces the roasting chamber,
Ventilation holes are formed in the body of the measurement unit in a direction crossing the direction in which the body-side through-holes are formed, and the body-side through-holes and the ventilation holes cross each other,
One side further includes a ventilation part communicating with the flow pipe and the other side communicating with the ventilation hole,
Roasting apparatus, characterized in that the air flow flowing into the ventilation hole side through the ventilation unit is formed toward the back side of the filter unit.
According to claim 7,
The ventilation part,
One side includes a pipe unit communicating with the flow pipe, one side connected to the other side of the pipe unit, and the other side including a plug unit connected to the ventilation hole,
The plug unit is formed in a bent shape,
Roasting apparatus, characterized in that the plug portion inserted into the ventilation hole is formed on the other side of the plug unit.
According to claim 7,
The ventilation hole completely penetrates one side and the other side of the measuring unit body,
Roasting apparatus in which a shielding means for shielding the ventilation hole from the outside is installed on the other side of the ventilation hole.
According to claim 7,
A cylindrical guide part is formed on the lower surface of the upper unit to surround the measuring hole and protrude downward,
The roasting device, characterized in that the guide portion is aligned with the measuring hole.

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