JP2023159501A - Cooker - Google Patents

Abstract

To provide a cooker of a hot wind circulation system with increased deodorization effect.SOLUTION: A cooker of the present invention comprises: a catalyst heating heater 33 that is installed in a heating chamber 36, and heats a deodorizing catalyst 101; and a hot air fan 34 that is installed in the heating chamber 36, and circulates air between the heating chamber 36 and a cooking chamber 12, where the deodorizing catalyst 101 is installed on a hot air circulation path D generated by the hot air fan 34 and on the downstream side of the catalyst heating heater 33. With such a configuration, the cooker of the present invention can efficiently deodorize the inside of the cooker.SELECTED DRAWING: Figure 3

Description

The present invention relates to a deodorizing function of a cooking device for cooking food.

Conventionally, as shown in FIG. 9, for example, a heating cooker is known in which a deodorizing catalyst 101A is attached to a hot air oven chamber (heating chamber) (for example, Patent Document 1).

Japanese Patent Application Publication No. 6-323553

However, in Patent Document 1, it is attached to the upper wall surface of the heating chamber with the upper air outlet in between, or to the corresponding position of the lower air outlet, so it was not possible to efficiently deodorize the circulating air.

The present invention has been made in view of the above circumstances, and provides a heating cooking device of a hot air circulation type that has an increased deodorizing effect.

In order to solve this problem, the present invention includes a catalyst heater installed in a heating chamber to heat a deodorizing catalyst, and a hot air fan installed in the heating chamber to circulate air between the heating chamber and the cooking chamber. The deodorizing catalyst is installed on the hot air circulation path generated by the hot air fan and downstream of the catalyst heating heater.

According to the cooking device of the present invention, by using the hot air circulation method and providing the deodorizing catalyst on the hot air circulation path and near the catalyst heater, the inside of the refrigerator can be efficiently deodorized. .

1 is an external perspective view of a heating cooker according to a preferred embodiment of the present invention. 1 is a schematic side sectional view showing the internal structure of a cooking device according to a preferred embodiment of the present invention. FIG. 2 is a schematic side sectional view showing an example of the arrangement of a deodorizing catalyst and a configuration example of a heater for heating the catalyst according to a preferred embodiment of the present invention. 1 is a schematic front view showing a configuration example of a catalyst heater according to a preferred embodiment of the present invention. FIG. 2 is a schematic side sectional view showing an example of how a deodorizing catalyst is attached according to a preferred embodiment of the present invention. FIG. 1 is a block diagram showing the main electrical configuration of a cooking device according to a preferred embodiment of the present invention. FIG. 7 is a schematic side sectional view showing an example of the arrangement of a deodorizing catalyst and a configuration example of a catalyst heater and a cooking auxiliary heater according to another preferred embodiment of the present invention. It is a front schematic diagram which shows the example of a structure of the heater for catalyst heating, and the auxiliary heater for cooking which concern on another suitable embodiment of this invention. FIG. 2 is a schematic cross-sectional view showing the arrangement of a deodorizing catalyst according to a conventional example.

Hereinafter, preferred embodiments of the cooking device of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following description, and those skilled in the art may make various modifications based on the gist of the invention described in the claims or disclosed in the detailed description. or change is possible. Such modifications and changes are also included within the scope of the present invention. Note that common parts in all of these drawings are designated by common reference numerals.

<First embodiment>
1 to 6 show a configuration in which a heating cooker according to a first embodiment of the present invention is applied to a hot air circulation type microwave oven. First, the overall structure of the microwave oven will be explained based on FIGS. 1 and 2. Reference numeral 1 denotes a main body configured in a substantially rectangular box shape. It is equipped with two cabinets made of Reference numeral 3 denotes a door provided on the front surface of the main body 1 that can be opened and closed.

The top of the door 3 is equipped with a handle 4 for opening and closing the vertically-opening door 3, and the side of the door 3 has an operation panel section for display, notification, and operation. It is equipped with 5. The operation panel section 5 is provided with a display means 6 for displaying cooking settings, progress status, and the like, as well as an operation means 7 for allowing various operational inputs related to heating cooking. The operation means 7 of this embodiment is configured, for example, by a touch sensor provided on the surface of the display means 6, but may also include physical keys/buttons, and the configuration is not particularly limited. Although not shown, an operation panel PC (printed circuit) board is disposed inside the door 3 on the rear side of the operation panel section 5 in order to control the display means 6, operation means 7, and the like. Further, 8 is a power cord provided with a power plug that can be inserted into and removed from a household outlet.

A cabinet 2 forming the left and right side surfaces and the top surface of the main body 1 is provided so as to cover a metal oven chamber 11, and the oven chamber 11 forms a cooking chamber 12 in which food to be cooked is housed. Since the oven chamber 11 is made of metal, the entire inner surface of the cooking chamber 12 except for a stand 15 serving as a bottom plate inside the oven, which will be described later, is made of a material through which microwaves cannot pass.

The peripheral wall forming the inner surface of the cooking chamber 12 includes a ceiling wall 12a, a bottom wall 12b, a rear wall 12d, and a side wall 12e. For example, an internal temperature sensor 14 composed of a thermistor, a humidity sensor, etc. is provided. Further, the front surface of the cooking chamber 12 reaches an oven front plate (not shown) that forms the front surface of the oven compartment 11, and is open for taking in and out food items and containers containing food items. The opening is opened and closed by a door 3.

A table 15 is provided on the bottom wall 12b of the cooking chamber 12 on which objects to be cooked and containers are placed. The table 15 is made of glass, ceramic, or the like that transmits microwaves. A microwave heating means 17 that radiates microwaves from below the table 15 toward the interior space of the cooking chamber 12 is disposed below the table 15 . The microwave heating means 17 is provided in the lower part of the rear space 18 of the main body 1, and includes a magnetron 19 as a microwave generating means for supplying microwaves, which are radio waves, into the cooking chamber 12, and a magnetron for driving the magnetron 19. A drive device 47 (see FIG. 6), a waveguide 21 provided between the bottom wall 12b of the cooking chamber 12 and the table 15, a rotating antenna 22 provided below the table 15, and a rotating antenna 22 that rotates the rotary antenna 22. It is mainly composed of an antenna rotation motor 23 for driving. Reference numeral 24 denotes a concave antenna storage section which is made up of a part of the waveguide 21 and a metal plate material and houses the rotating antenna 22. The top opening of this antenna storage section 24 is covered with a mounting base 15.

The rotating antenna 22 stirs the microwaves oscillated by the magnetron 19 and guided directly below the rotating antenna 22 by the waveguide 21, and directs the microwaves to the food placed on the table 15 or to the table 15. The entire rotary antenna 22 is disposed in parallel with the table 15, facing the table 15, so that the entire rotating antenna 22 is arranged in parallel with the table 15.

Reference numeral 31 denotes a hot air heater unit for heating the oven, which is provided inside the main body 1 at the rear of the cooking chamber 12 outdoors. This hot air heater unit 31 is provided in the rear space 18 of the main body 1 as a heating means for the food to be cooked or a container containing the food to be cooked, and in this embodiment, it is connected to a convex casing 32 attached to the rear side wall 12d. , a catalyst heater 33 that heats the air to be circulated to the deodorizing catalyst 101 and the cooking chamber 12, a hot air fan 34 that sends and circulates heated air into the cooking chamber 12, and an electric motor that rotates the hot air fan 34 in a predetermined direction. It is generally composed of a hot air motor 35 and a hot air motor 35. A heater 33 for heating the catalyst and a hot air fan 34 are respectively disposed in a heating chamber 36 formed outside and rearward of the cooking chamber 12 as an internal space between the rear side wall 12d and the casing 32.

The hot air fan 34 is provided as a so-called centrifugal fan that discharges air taken in in the axial direction in a radial direction perpendicular to the axial direction by centrifugal force during rotation. In this embodiment, for example, a sheathed heater, a mica heater, a quartz tube heater, a halogen heater, or the like is used as the catalyst heating heater 33, which is also a heat generating part, but the present invention is not limited thereto, and is not particularly limited thereto.

The partition plate 103 of the rear wall 12d has an inlet 37 at its center, and around the inlet 37 are a plurality of hot air outlets 38 from the heating chamber 36 to the cooking chamber 12. The suction port 37 and the hot air outlet 38 function as a ventilation section that communicates between the cooking chamber 12 and the heating chamber 36. The plurality of suction ports 37 and hot air outlets 38 can have, for example, a round hole shape or an elliptical hole shape, but the shape and number are not particularly limited.

Then, when the hot air fan 34 is driven to rotate as the hot air motor 35 is energized, air sucked from inside the cooking chamber 12 through the suction port 37 is blown out in the radial direction of the hot air fan 34, and the heater drive means 49 (see FIG. The hot air is heated by the catalyst heating heater 33 which is energized according to the method (see 6), and the hot air passes through the hot air outlet 38 and is supplied into the cooking chamber 12 . Thereby, as shown in FIG. 3, a hot air circulation path D is formed that circulates air (hot air) between the heating chamber 36 and the cooking chamber 12.

A grill heater 61 that heats the food to be cooked from above the cooking chamber 12 is embedded in the ceiling wall 12a of the cooking chamber 12. By energizing the grill heater 61 by the heater driving means 49, infrared heat radiation from the grill heater 61 is generated in the closed space in the cooking chamber 12, thereby heating the food to be cooked in the cooking chamber 12. It consists of cooking on a grill. In this embodiment, for example, a sheathed heater, a mica heater, a quartz tube heater, a halogen heater, or the like is used as the grill heater 61, which is also a heat generating part, but the present invention is not limited thereto, and is not particularly limited thereto.

In the cooking device of this embodiment, as shown in FIGS. 2 and 3, a deodorizing catalyst 101 is installed on the hot air circulation path D. The catalyst heater 33 heats the deodorizing catalyst 101 installed on the hot air circulation path D. The air heated by the catalyst heater 33 is circulated by the hot air fan 34. This makes it possible to circulate substances that cause odors during cooking, and to remove and decompose them using the deodorizing catalyst 101.

The deodorizing catalyst 101 can be installed on the hot air circulation path D generated by the hot air fan 34 and near the catalyst heater 33 . In particular, by installing the deodorizing catalyst 101 downstream of the catalyst heating heater 33, the deodorizing catalyst 101 is installed downstream of the hot air sent from the hot air fan 34 and heated by the catalyst heating heater 33. The deodorizing catalyst 101 is heated by this hot air, and the deodorized air can be circulated in the cooking chamber 12. The deodorizing catalyst 101 is installed, for example, on the hot air circulation path D generated by the hot air fan 34 and at the hot air outlet 38 from the heating chamber 36 to the cooking chamber 12. Thereby, the circulating hot air can be efficiently applied to the deodorizing catalyst 101.

As shown in FIG. 4, the catalyst heater 33 has a tubular shape and is arranged to surround the hot air fan 34 in the radial direction. As a result, the catalyst heater 33 can also be used as a cooking heater that heats the air circulated to the cooking chamber 12, and is configured to oven-heat the objects and containers in the cooking chamber 12 by hot air convection heating. It becomes. In FIG. 4, the catalyst heater 33 has a rectangular shape when viewed from the front, but it can also have a circular shape, an elliptical shape, etc., and the shape is not particularly limited.

The deodorizing catalyst 101 can be made of, for example, ceramic and copper oxide, which exhibit a deodorizing effect when heated. In this case, the deodorizing effect is exhibited by heating the deodorizing catalyst 101 to, for example, 300° C. or higher. The deodorizing catalyst 101 has, for example, a rectangular parallelepiped shape, and can be housed in the catalyst cover 102 and fixed to the partition plate 103 with screws, adhesive, or the like, as shown in FIG. 5, for example. Note that the shape and number of deodorizing catalysts 101 are not particularly limited. As mentioned above, the partition plate 103 of the rear wall 12d is provided with a plurality of hot air outlets 38 from the heating chamber 36 to the cooking chamber 12, and the deodorizing catalyst 101 is installed in all or part of these hot air outlets 38. can do. In FIG. 5, the deodorizing catalyst 101 is disposed on the cooking chamber 12 side of the hot air outlet 38, but it may also be disposed on the heating chamber 36 side of the hot air outlet 38, or on the hot air circulation path D. It may also be located elsewhere.

FIG. 6 illustrates the main electrical configuration of the cooking device of this embodiment. In the figure, reference numeral 41 denotes a control means constituted by a microcomputer, and as is well known, this control means 41 includes a CPU as an arithmetic processing means, a storage means 42 such as a memory as a storage medium, and a time and cooking device. It is equipped with a clock means 43 such as a timer for measuring various times such as the time related to the clock, input/output devices, and the like.

The input port of the control means 41 includes, in addition to the aforementioned operation means 7 and the internal temperature sensor 14, a door opening/closing detection means 44 for detecting the open/closed state of the door 3, and a hot air sensor for detecting the rotational speed of the hot air fan 34. The motor rotation detection means 45 and the antenna position detection means 46 that detect the origin position of the rotating antenna 22 constituting the microwave generator are electrically connected to each other. In addition to the display means 6 and the magnetron drive device 47 described above, the output port of the control means 41 also includes a rotary antenna drive means 48 for operating the antenna rotation motor 23, and a catalyst heater for deodorizing catalyst heating and oven heating. The heater 33 for grill cooking, the grill heater 61 for grill cooking, and the auxiliary cooking heater 39 (see FIGS. 7 and 8) of the second embodiment to be described later are configured with electromagnetic relays, power transistors, etc. that individually turn on and off the power. A heater drive means 49, a hot air motor drive means 50 for rotationally driving the hot air motor 35, and a notification means 51 such as a buzzer that provides sound notification are electrically connected to each other.

The control means 41 receives the rotation speed instruction signal from the rotation speed instruction means 57 and the signal of the hot air motor 35 rotation speed detected by the hot air motor rotation detection means 45, and determines a predetermined timing based on the time measurement from the time measurement means 43. It has a function of outputting a driving control signal to the hot air motor driving means 50. Thereby, the hot air motor driving means 50 can drive the hot air fan 34 while controlling the rotation speed. The control means 41 also receives an operation signal from the operation means 7 and detection signals from the internal temperature sensor 14, the door opening/closing detection means 44, and the antenna position detection means 46, and performs time measurement from the time measurement means 43. At a predetermined timing based on the above, a drive control signal is output to the magnetron drive device 47, the rotary antenna drive means 48, and the heater drive means 49, a display control signal is output to the display means 6, and a notification signal is output. It has a function of outputting a control signal for notification to the means 51. These functions are realized by the control means 41 reading a program stored in the storage means 42. In particular, in this embodiment, a program that causes the control means 41 to function as the cooking control section 55 and the display control section 56 is implemented. We are prepared.

The cooking control section 55 mainly controls the operation of each section related to heating and cooking of the object to be cooked, and when receiving an operation signal accompanying the operation of the operation means 7, it receives a detection signal from the door opening/closing detection means 44. When it is determined that the door 3 is closed, a control signal is sent to the magnetron drive device 47, the rotary antenna drive means 48, the heater drive means 49, and the hot air motor drive means 50 in accordance with the operation signal. to control various types of heating and cooking of the food to be cooked. In addition, a plurality of cooking menus are stored in advance in the storage means 42 as cooking information for heating cooking settings including materials of the food to be cooked, heating conditions, etc. for performing various heating cooking operations, and the heating cooking control unit 55, when an operation for instructing the start of cooking is performed from the operating means 7 for one cooking menu selected from among the cooking menus stored in the storage means 42, predetermined cooking information according to the cooking information of the selected cooking menu is performed. The structure is such that the food to be cooked is cooked by following these steps.

For example, when an automatic cooking menu for oven heating is selected and an operation instructing to start cooking is performed, the heating cooking control unit 55 controls the catalyst heating heater 33 and the hot air fan in a procedure corresponding to the selected cooking menu. It has a function to control 34. Specifically, the cooking control unit 55 controls the heater drive means 49 and the hot air motor drive means 50 so that the air heated by the catalyst heating heater 33 is supplied into the cooking chamber 12 by the hot air fan 34. ing. Therefore, the catalyst heater 33 and the hot air fan 34 constitute oven heating means for heating the food in the oven.

Further, when an automatic cooking menu for microwave heating is selected and an operation instructing to start cooking is performed, the cooking control unit 55 controls the magnetron 19 and the rotating antenna 22 in a procedure corresponding to the selected cooking menu. It has the function to Specifically, the cooking control unit 55 controls the magnetron drive device 47 to generate microwaves from the magnetron 19, stirs the microwaves with the rotating antenna 22, and uniformly irradiates the microwaves onto the food to be cooked. The rotary antenna driving means 48 is controlled so that the antenna is rotated. Therefore, the magnetron 19 and the rotating antenna 22 constitute microwave heating means for heating the food in a microwave.

In microwave cooking, normally the catalyst heating heater 33 and hot air fan 34 are not operated, but by energizing the catalyst heating heater 33 and the hot air motor 35 that operates the hot air fan 34 at the same time as microwave heating, By operating the catalyst heater 33 and the hot air fan 34 at the same time, the air deodorized by the deodorizing catalyst 101 can be circulated within the refrigerator, thereby increasing the efficiency of deodorizing the interior of the refrigerator during microwave cooking.

Note that the catalyst heating heater 33 and the hot air fan 34 may be operated for a certain period of time after the microwave cooking is completed to increase the deodorizing efficiency in the refrigerator.

The heater driving means 49 is configured to control the power supply to the catalyst heater 33 and the grill heater 61 individually. For grill cooking, normally only the grill heater 61 is energized and the catalyst heating heater 33 and hot air fan 34 are not operated. By energizing the hot air motor 35 to be operated, the catalyst heating heater 33 and the hot air fan 34 are operated at the same time to circulate the air deodorized by the deodorizing catalyst 101 in the refrigerator, thereby deodorizing the interior during grill cooking. Efficiency can be increased.

Further, at the same time as the heater drive unit 49 simultaneously energizes the catalyst heating heater 33 and the grill heater 61, the hot air motor drive unit 50 drives the hot air fan 34 while controlling the number of revolutions. By driving the rotor at a low rotation speed, it is possible to prevent the temperature inside the refrigerator from dropping during grill cooking, and achieve balanced cooking and deodorization. As described above, the rotation speed of the hot air fan 34 is controlled by the control means 41 receiving the rotation speed instruction signal from the rotation speed instruction means 57 and outputting a drive control signal to the hot air motor drive means 50. can be done.

As described above, in the heating cooker of this embodiment, the catalyst heater 33 is installed in the heating chamber 36 and heats the deodorizing catalyst 101, and the catalyst heater 33 is installed in the heating chamber 36 and is located between the heating chamber 36 and the cooking chamber 12. A deodorizing catalyst 101 is installed on the hot air circulation path D generated by the hot air fan 34 and downstream of the catalyst heating heater 33.

With such a configuration, the air deodorized by the deodorizing catalyst 101 can be circulated inside the refrigerator.

Further, in the cooking device of this embodiment, a deodorizing catalyst 101 is installed at the hot air outlet 38 from the heating chamber 36 to the cooking chamber 12.

With such a configuration, hot air can be efficiently applied to the deodorizing catalyst 101.

Further, in the cooking device of this embodiment, the catalyst heating heater 33 also serves as a cooking heater that heats the air circulated to the cooking chamber 12.

With this configuration, the catalyst heating heater 33 can be efficiently used for catalyst heating and oven cooking.

The cooking device of this embodiment further includes a grill heater 61 installed on the ceiling wall 12a of the cooking chamber 12 for heating and grilling the food to be cooked, and energizing the catalyst heating heater 33 and the grill heater 61 at the same time. A controllable heater drive means 49 is provided.

With such a configuration, the deodorizing efficiency inside the refrigerator can be increased even during grill cooking.

In addition, in the heating cooker of this embodiment, the heater drive means 49 simultaneously energizes the catalyst heating heater 33 and the grill heater 61, and at the same time, the hot air motor drive means can drive the hot air fan 34 while controlling the rotation speed. 50.

With such a configuration, it is possible to balance cooking and deodorization so that there is no effect such as a drop in temperature inside the refrigerator during grill cooking.

<Second embodiment>
As shown in FIGS. 7 and 8, in the second embodiment, the catalyst heating heater 33 that is installed in the heating chamber 36 and heats the deodorizing catalyst 101 is separate from the catalyst heater 33 that is installed in the heating chamber 36 and is installed in the cooking chamber 12. This differs from the first embodiment in that an auxiliary cooking heater 39 is provided to heat the air that is circulated. Other configurations can be the same as in the first embodiment.

The catalyst heater 33 can be installed above the hot air fan 34 in a horizontally long shape. In this case, the auxiliary cooking heater 39 can be installed to surround the hot air fan 34 on the sides and below. Note that the catalyst heater 33 may be installed below or to the side of the hot air fan 34. In accordance with the arrangement of the catalyst heater 33, the arrangement of the deodorizing catalyst 101 and the auxiliary cooking heater 39 can be adjusted as appropriate. The shape of the auxiliary cooking heater 39 is not particularly limited, and may be a U-shape or a semicircular shape.

The heating cooker of this embodiment also includes energization heating of the auxiliary cooking heater 39 by the heater drive means 49 in cases where the amount of heat is insufficient by the energization heating of the catalyst heating heater 33 by the heater drive means 49. The food to be cooked and the containers in the cooking chamber 12 are heated in the oven by convection heating of hot air. In this embodiment, for example, a sheathed heater, mica heater, quartz tube heater, or halogen heater is used as the cooking auxiliary heater 39, which is also a heat generating part, but the present invention is not limited thereto, and is not particularly limited thereto.

The amounts of heat required for the catalyst heating heater 33 and the cooking auxiliary heater 39 are different. For example, the catalyst heater 33 requires a larger amount of heat than the cooking auxiliary heater 39 in order to maintain the deodorizing catalyst 101 at a certain temperature or higher. Therefore, the heater driving means 49 is configured to individually control the energization of each of the heaters 33 and 39. By making it possible to individually control each heater 33 and 39, for example, if the deodorizing catalyst 101 is sufficiently warm due to the operation of the catalyst heating heater 33, but the amount of heat required for cooking is insufficient, the auxiliary cooking heater 39 can also be activated. It is possible to perform flexible heating control with reduced power consumption.

As described above, the heating cooker of this embodiment further includes the cooking auxiliary heater 39 installed in the heating chamber 33 and heating the air circulated to the cooking chamber 12, and the hot air fan 34 is connected to the catalyst heating heater 33 and the cooking auxiliary heater 39. A heater driving means 49 is provided which circulates air heated by the auxiliary heater 39 and controls the energization of the catalyst heating heater 33 and the auxiliary cooking heater 39 individually.

With such a configuration, flexible heating control with reduced power consumption can be performed.

As described above, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention. For example, in this embodiment, the deodorizing catalyst 101 is attached to the cooking chamber 12 side of the partition plate 103, but it may be attached to the heating chamber 36 side of the partition plate 103.

1 Main body 12 Cooking chamber 33 Catalyst heating heater 34 Hot air fan 35 Hot air motor 36 Heating chamber 38 Hot air outlet 39 Auxiliary cooking heater 41 Control means 45 Hot air motor rotation detection means 49 Heater driving means 50 Hot air motor driving means 61 Grill heater 101 Deodorizing catalyst 103 Partition plate D Hot air circulation path

Claims (6)

A catalyst heating heater installed in a heating chamber to heat a deodorizing catalyst, and a hot air fan installed in the heating chamber to circulate air between the heating chamber and the cooking chamber, the hot air being generated by the hot air fan. A cooking device characterized in that the deodorizing catalyst is installed on a circulation path and downstream of the catalyst heating heater. The cooking device according to claim 1, wherein the deodorizing catalyst is installed at a hot air outlet from the heating chamber to the cooking chamber. The heating chamber further includes a cooking auxiliary heater installed in the heating chamber to heat air to be circulated to the cooking chamber, and the hot air fan circulates air heated by the catalyst heating heater and the cooking auxiliary heater, and the hot air fan circulates the air heated by the catalyst heating heater and the cooking auxiliary heater. 2. The cooking device according to claim 1, further comprising a heater driving means for individually controlling energization of the heating heater and the auxiliary cooking heater. The cooking device according to claim 1 or 2, wherein the catalyst heating heater also serves as a cooking heater that heats air circulated to the cooking chamber. The method further includes a grill heater installed on the ceiling wall of the cooking chamber for heating and grilling the food to be cooked, and further comprising a heater drive means capable of simultaneously controlling energization of the catalyst heating heater and the grill heater. The heating cooker according to any one of claims 1 to 3. 5. A hot-air motor driving means capable of driving the hot-air fan while controlling the number of revolutions at the same time as the heater driving means simultaneously energizes the catalyst heating heater and the grill heater. The heating cooker described in .

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