JP5948403B1 - Flyer - Google Patents

Abstract

Even when combustion exhaust is used, a sufficient amount of heat is applied to solid oil to ensure liquefaction. A fryer includes an oil tank in which cooking oil is stored, and a plurality of pulse combustors provided in the oil tank to heat the cooking oil by burning a mixed gas of fuel gas and combustion air. , An oil container placement portion 41 for placing a funnel can 42 in which solid oil is accommodated, and heating means for heating the solid oil in the funnel can 42 by combustion exhaust generated from the pulse combustor 6 (solid oil melter) 46) and oil supply means for supplying the liquefied solid oil to the oil tank 3 from the canister 42. The solid oil fuser 46 collects the combustion exhaust gas generated from the plurality of pulse combustors 6A to 6D. The dough can 42 is heated. [Selection] Figure 2

Description

  The present invention relates to a fryer that heats cooking oil liquefied by melting solid oil in an oil tank, and injects food into the oil tank for cooking.

The fryer heats the cooking oil stored in the oil tank to a predetermined cooking temperature by heating means such as a burner or a heating element, thereby cooking the food charged in the oil tank.
When the time and number of times of cooking are increased, the amount of impurities accumulated in the cooking oil is increased, the cooking oil is deteriorated, and the cooking quality is lowered. In addition, the amount of cooking oil is reduced by the oil absorbed by the ingredients. Therefore, when using the fryer, it is necessary to periodically filter cooking oil or replenish (add oil) new cooking oil according to the cooking time or number of times.

By the way, in fast food stores that cook fried foods such as potatoes and chicken using a commercial fryer, solid oil such as lard is adopted from problems such as flavor, and it is liquefied by heating and melting solid oil, Often used as cooking oil.
On the other hand, from the viewpoint of cost for cooking oil and space saving of the fryer itself, it is conceivable to reduce the capacity of the oil tank to save cooking oil and make the fryer compact.
However, when the capacity of the oil tank is reduced, the ratio of the amount of oil absorbed by the food to the capacity of the oil tank increases, so that the cooking oil decreases more quickly and the frequency of the oil increases. However, when solid oil is employed as cooking oil, a certain amount of time is required for melting and liquefying, so it is not possible to immediately respond to the timing of the additional oil. In view of this, the applicant of the present invention disclosed in Patent Document 1 that the combustion exhaust of the pulse combustor, which is a cooking oil heating means, is guided to the solid oil storage part, and the solid oil can be heated by exhaust heat of the combustion exhaust. The invention is proposed.

JP 2008-259579 A

  However, high-efficiency combustors may be used in recent flyers. In such high-efficiency fryer, combustion heat is efficiently used to heat oil, but the amount of heat in combustion exhaust gas is reduced and solid heat is generated. It may be insufficient to liquefy the oil.

  Accordingly, an object of the present invention is to provide a fryer that can give a sufficient amount of heat to solid oil even when combustion exhaust is used, and can be liquefied with certainty.

In order to achieve the above-mentioned object, the invention according to claim 1 is provided by cooking one or a plurality of oil tanks in which cooking oil is stored and a fuel gas and combustion air, which are provided in the oil tank and combusted. A plurality of combustors for heating oil, an oil container disposition portion for disposing an oil container in which solid oil is stored, a heating means for heating solid oil in the oil container by combustion exhaust generated from the combustor, and liquefaction An oil supply means for supplying the solid oil from the oil container to the oil tank, wherein the heating means includes a plurality of upstream exhaust pipes connected to the plurality of combustors, and an oil container arrangement portion. And a plurality of exhaust mufflers provided on the downstream side of the solid oil melter from each internal flow path, each of which has an internal flow path to which each upstream exhaust pipe is individually connected. A plurality of downstream exhaust pipes connected to each other. In which the combustion exhaust resulting from the plurality of combustors solid oil by passing through each independently solid oil melter is characterized in that the warmed.
According to a second aspect of the present invention, in the configuration of the first aspect, the internal flow path corresponding to the lower region of the oil container in the solid oil melter includes an upstream exhaust pipe and a downstream side of the frequently used combustor. An exhaust pipe is connected .
According to a third aspect of the present invention, in the configuration of the first or second aspect, the solid oil melting device is provided with a bottom plate on which the oil container is placed, and stands on the bottom plate so as to surround the oil container. A plurality of hollow heat transfer walls forming an internal flow path with an inlet on the side and an outlet on the upper side, and an upstream exhaust pipe is connected to the inlet of the internal flow path in each heat transfer wall. A downstream exhaust pipe is connected to the outlet of the internal flow path in the wall.

According to the first aspect of the present invention, since the heating means collects and heats the combustion exhaust generated from the plurality of combustors, even if the heat amount of the combustion exhaust is low with a high efficiency combustor, A sufficient amount of heat can be imparted to the solid oil. Therefore, it is possible to reliably melt the amount necessary for the addition oil.
According to the second aspect of the present invention, in the configuration of the first aspect, since the heating means heats the lower region of the oil container by the combustion exhaust gas of the frequently used combustor, the solid oil is always present. The existing lower region is efficiently heated.

It is a side view of a flyer. It is the schematic of a flyer. It is explanatory drawing of an oil container arrangement | positioning part, (A) is the perspective view which each looked from the back left side, (B) from the back right side, respectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an example of a flyer, and FIG. 2 is a schematic view of the flyer. This fryer 1 has three oil tanks 3, 3,... In the horizontal direction (in the direction orthogonal to the plane of the paper in FIG. 1) which are partitioned by a partition wall 4 in the container 2 and have a pair of cooking chambers 5, 5, respectively. Side by side. In the cooking chambers 5, 5 of each oil tank 3, a pulse combustor 6 having a combustion chamber 7 and a tail pipe 8 is provided. This pulse combustor 6 is provided in each cooking chamber 5, but in FIG. 2, only the cooking chamber 5 at the right end is illustrated and the description is omitted in the other cooking chambers 5. In addition, when distinguishing the exhaust system after the cooking chamber 5 and the pulse combustor 6, description will be given with reference numerals such as 5A, 5B, 5C... And 6A, 6B, 6C. . Here, the rightmost cooking chamber 5A, which is often adjacent to a work table (not shown) for salting potatoes after cooking, etc., is the most frequently used, and the usage frequency is the lowest in the order of cooking chambers 5B, 5C,. It has become.

  An air chamber 9 is provided outside the front side of each oil tank 3, and a gas branch pipe 12 branched from a gas conduit 11 is connected to a mixing chamber 10 provided in the air chamber 9 and communicating with the combustion chamber 7. Then, fuel gas is supplied. The gas branch pipe 12 is provided with solenoid valves 13 and 13 for controlling the opening and closing of the gas flow path, and a gas governor 14 for adjusting the gas pressure. In addition, a supply air branch pipe 17 branched from an air supply pipe 16 connected to a fan 15 provided on the bottom surface of the vessel body 2 is connected to the mixing chamber 10 and supplied with combustion air.

  After the tail pipes 8 of the pulse combustors 6A to 6D of the four cooking chambers 5A to 5D from the right end among the six cooking chambers 5, 5,... Are arranged in a meandering manner in the cooking chambers 5A to 5D. The first exhaust pipes 18A to 18D drawn from the air chamber 9 are connected. The first exhaust pipe 18 is connected via a decoupler 19 to a solid oil melter 46 described later so that combustion exhaust gas can be introduced into the solid oil melter 46. The second exhaust pipes 20 </ b> A to 20 </ b> D are connected to the solid oil melting device 46, and combustion exhaust can be discharged upward at the rear of the body 2 through the exhaust mufflers 21 </ b> A to 21 </ b> D installed at the rear of the oil tank 3. Yes. On the other hand, the tail pipes 8 of the pulse combustors 6E and 6F in the cooking chambers 5E and 5F are also arranged in a meandering manner in the cooking chambers 5E and 5F, and then the first exhaust pipes 18E and 18F drawn from the air chamber 9 are used. However, the first exhaust pipes 18E and 18F are not connected to the solid oil melter 46, and protrude upwardly through the decoupler 19 and the exhaust mufflers 21E and 21F.

Each oil tank 3 has a bottom thermistor 22 for detecting the temperature of cooking oil near the bottom, a temperature control thermistor 23 for adjusting the temperature of cooking oil, and an oil for detecting the position of the oil level for each cooking chamber 5. A surface thermistor 24 is provided, and is electrically connected to a controller 25 provided on the lower front side of the container body 2.
Further, a filtering tank 26 is provided at the bottom of the vessel body 2, and an oil drain pipe 27 connected to the filtering tank 26 is connected to the bottom of the cooking chambers 5, 5 in each oil tank 3 and an electric oil drain valve 29. Branching into drain oil branch pipes 28, 28,.
In addition, a pump 30 is provided at the lower part of the container body 2, and an oil supply pipe 31 connected to the outlet side of the pump 30 is connected to the upper part of the cooking chambers 5, 5 in each oil tank 3, and an electric oil supply valve. The oil supply branch pipes 32, 32. The oil supply pipe 31 is provided with a thermistor 35 and is electrically connected to the controller 25 together with the electric oil discharge valve 29, the pump 30, and the electric oil supply valve 33.

On the other hand, a suction pipe 36 is connected to the inlet side of the pump 30 and branches into a first suction branch pipe 37 and a second suction branch pipe 38. The first suction branch pipe 37 includes a switching valve 39 and is connected to the filtering tank 26, and the second suction branch pipe 38 includes a switching valve 40 and is formed in an oil container placement portion 41 formed at the bottom of the container body 2. It is arranged. In the oil container placement portion 41, the second suction branch pipe 38 can be connected to a funnel 42 as an oil container containing solid oil such as lard.
The oil container placement section 41 is provided with an electric heater 43 such as a sheathed heater or a carbon heater, and a thermal insulation thermistor 44. On the side surface of the oil container placement section 41, a detection switch for detecting the set canister 42 45 is provided. The switching valves 39 and 40, the electric heater 43, the thermal insulation thermistor 44, and the detection switch 45 are also electrically connected to the controller 25.

The oil container placement unit 41 is provided with a solid oil melter 46.
As shown in FIG. 3, the solid oil melting unit 46 is erected on the left and right side surfaces and the rear surface of the square bottom plate 47 on which the electric heater 43 is provided, excluding the front surface serving as the entrance / exit of the Ito can 42. The heat transfer wall 48 on the right side of the front view (lower left side in FIG. 3A) is connected to the pulse combustor 6A of the cooking chamber 5A that is used most frequently. The first exhaust pipe 18A is connected from the lower rear side, and the second exhaust pipe 20A is connected to the upper rear side. Inside the heat transfer wall 48, partition plates 52 and 52 alternately projecting from the front and rear inner surfaces are provided, and the internal flow path from the lower first exhaust pipe 18A to the upper second exhaust pipe 20A meanders. It is formed in a shape. The rear heat transfer wall 49 has a first exhaust pipe 18B connected to the pulse combustor 6B of the cooking chamber 5B having the next highest frequency of use, connected from the rear to the lower left corner, and from the rear to the upper right corner. The second exhaust pipe 20B connected to is connected to the exhaust muffler 21B. Also in the heat transfer wall 49, partition plates 53, 53 protruding alternately from the left and right inner surfaces are provided, and the internal flow path from the lower first exhaust pipe 18B to the upper second exhaust pipe 20B is serpentine. Is formed.

And in the front view left side (right side in FIG. 3 (A)), it is divided into a lower heat transfer wall 50 and an upper heat transfer wall 51, and the lower heat transfer wall 50 has the next frequency of use. The first exhaust pipe 18C connected to the pulse combustor 6C of the high cooking chamber 5C is connected from the lower rear side, and the second exhaust pipe 20C connected from the upper rear side is connected to the exhaust muffler 21C. The heat transfer wall 50 is provided with a partition plate 54 that protrudes forward from the rear inner surface, and the internal flow path from the lower first exhaust pipe 18C to the upper second exhaust pipe 20C is inverted U-shaped. Forming.
A first exhaust pipe 18D connected to the pulse combustor 6D of the cooking chamber 5D having the next highest frequency of use is connected to the upper heat transfer wall 51 from the lower rear side, and the second exhaust pipe 18D connected from the upper rear side. The exhaust pipe 20D is connected to the exhaust muffler 21D. The heat transfer wall 51 is also provided with a partition plate 55 projecting forward from the rear inner surface, and the internal flow path from the lower first exhaust pipe 18D to the upper second exhaust pipe 20D is inverted U-shaped. Forming.

  Therefore, all the combustion exhaust generated from the pulse combustors 6 </ b> A to 6 </ b> D passes through the solid oil melter 46. 41a is an open / close lid that covers the upper portion of the oil container placement portion 41, and when the second suction branch pipe 38 is connected to the open / close lid 41a from above the one funnel 42 set on the bottom plate 47, The second suction branch pipe 38 is inserted into the canister 42 from above and the tip is positioned near the bottom.

  In addition to ON / OFF control of the pulse combustor 6, the controller 25 discharges cooking oil in each cooking chamber 5 (automatic oil draining function), filters the discharged cooking oil (automatic cleaning function), and cleans at a set timing. The cooking oil supplied (automatic oil supply function), the replenishment of cooking oil reduced by cooking (automatic oil addition function), and the melting of the solid oil in the canister 42 (solid oil melting function) can be executed. This will be described in order below.

(Pulse combustor ON / OFF control)
First, when a predetermined cooking mode is selected by an operation panel (not shown) provided in front of the container body 2 and the operation switch is turned on, the controller 25 rotates the fan 15 for a predetermined time to supply air, and then the combustion chamber 7 The pulsed combustor 6 is operated by intermittently burning the mixed gas therein. That is, the spark plug provided in the combustion chamber 7 ignites the mixed gas to explode and burn in the combustion chamber 7, and the combustion exhaust is forced to the tail pipe 8 by the pressure increase in the combustion chamber 7 accompanying the combustion. At the same time, the operation (ON / OFF operation) of sucking the fuel gas and the combustion air into the combustion chamber 7 which becomes negative pressure due to the discharge of the combustion exhaust is repeated, and the cooking oil stored in the oil tank 3 is heated. Cook. At this time, the detected temperature obtained from the temperature control thermistor 23 is monitored and the temperature of the cooking oil is maintained at a predetermined temperature (for example, 180 to 182 ° C.).

(Solid oil melting function)
The combustion exhaust discharged to the tail pipes 8 of the pulse combustors 6A to 6D is guided from the decoupler 19 through the first exhaust pipe 18 to the heat transfer walls 48 to 51 of the solid oil melter 46, and the internal flow path thereof. Then, the gas is again discharged from the second exhaust pipe 20 through the exhaust muffler 21 to the outside. By the combustion exhaust passing through the heat transfer walls 48 to 51, the funnel 42 set in the oil container placement portion 41 is heated. At this time, since the internal flow paths of the heat transfer walls 48 to 51 are formed in a meandering shape, the heat transfer time from the combustion exhaust to the solid oil is increased and the heat is effectively heated. In particular, on the right side of the funnel 42, since the combustion exhaust from the pulse combustor 6A of the cooking chamber 5A with the highest frequency of use is intensively heated by the lower heat transfer wall 50, the solid oil is always present. The lower region present is effectively warmed and liquefaction is maintained.

  Further, the controller 25 confirming the setting of the funnel 42 to the oil container placement unit 41 by turning on the detection switch 45 monitors the temperature detected by the heat insulation thermistor 44 and the detected temperature becomes a predetermined temperature (for example, 80 ° C.). Operation control of the electric heater 43 is performed so as to be maintained. For example, when the detected temperature is a low temperature of 40 ° C. (first temperature) or lower, the electric heater 43 is continuously turned on to a predetermined temperature, for example, when the detected temperature is a high temperature of 60 ° C. (second temperature) or higher. In such a case, the control of intermittently turning on the electric heater 43 is executed. As a result, the funnel 42 is heated from the bottom and liquefaction is maintained.

(Automatic oil draining function / automatic cleaning function / automatic oiling function)
When the number of cooking times reaches a predetermined number, the controller 25 opens the electric oil drain valve 29 to drain the cooking oil in the cooking chamber 5 from the oil drain branch pipe 28 to the filtering tank 26 via the oil drain pipe 27. To do. In the filtering tank 26, fried residue etc. are removed by passing through a filter (not shown), and the cooking oil is washed. Completion of the cooking oil discharge is confirmed by the temperature detected by the bottom thermistor 22.
Next, the switching valve 39 of the first suction branch pipe 37 is opened and the pump 30 is operated, the electric oil supply valve 33 of the oil supply branch pipe 32 is opened, and the cleaned cooking oil is returned to the cooking chamber 5 to supply oil. Do.

(Automatic addition oil function)
During cooking, the controller 25 monitors the detected temperature of the oil level thermistor 24. When the decrease in the detected oil temperature is confirmed by the decrease in the detected temperature, the electric oil supply valve 33 of the oil supply branch pipe 32 to the cooking chamber 5 where the oil level has decreased. And the switching valve 40 of the second suction branch pipe 38 are opened, the pump 30 is operated, and a predetermined amount (for example, 200 to 300 cc) of solid oil in the Ito can 42 is supplied. Since the solid oil in the canister 42 is liquefied at least by the solid oil melting device 46 and the electric heater 43, the oil can be quickly supplied at a necessary timing. The pipes (second suction branch pipe 38, suction pipe 36, oil supply pipe 31, oil supply branch pipe 32), the pump 30, the switching valve 40, and the electric oil supply valve 33 extending from the one can 42 to the cooking chamber 5 are oil supply means. Become.

  Thus, according to the fryer 1 of the said form, the oil tank 3 in which cooking oil is accommodated, the heating means (pulse combustor 6) which heats cooking oil, and the solid oil in the canister 42 are heated. A heating means (electric heater 43 and solid oil melting device 46) for maintaining a part of the oil in a liquefied state, and an oil supply means for supplying the liquefied solid oil to the oil tank 3 as an addition oil from the canister 42 to cooking oil (The second suction branch pipe 38, the suction pipe 36, the oil supply pipe 31, the oil supply branch pipe 32, the pump 30, the switching valve 40, and the electric oil supply valve 33). Since it is maintained in a liquefied state, even when solid oil is used, it is possible to add oil at any timing, and it is excellent in usability.

In particular, since the container 2 is provided with an oil container placement portion 41 for placing a canister 42 in which solid oil is housed, the canister 42 can be housed in a space in the container 2. The dough can 42 does not get in the way. In addition, this oil container arrangement | positioning part 41 can also be formed so that the canister 42 may be directly placed on a floor surface.
In addition, since the heating means is configured to guide the combustion exhaust discharged from the pulse combustor 6 to the oil container placement portion 41 to give the exhaust heat to the solid oil, the heating means is solid with a low cost configuration using the combustion exhaust. Oil can be heated.
In addition, since the electric heater 43 provided in the oil container arrangement portion 41 is also used as a heating means, the solid oil can be heated even during cooking where combustion exhaust cannot be used, and the liquefied state is reliably maintained. can do.

In the invention relating to the heating means for maintaining at least a part of the solid oil in the liquefied state, the number of oil tanks is not limited to the above-described form, and may be changed as appropriate, and may be a single oil tank or a partition wall. Even if there is no oil tank, there is no problem. The heating means is not limited to the pulse combustor, and a burner, an electric heater, or the like can be employed.
Moreover, in the said form, although combustion exhaust and an electric heater are used together as a heating means, if the required amount of liquefaction is possible, it can also be comprised only in either one. Therefore, if it is only an electric heater, it is also possible to arrange an electric heater not only on the bottom surface but also on the left and right and rear surface sides of the oil container.

On the other hand, according to the flyer 1 of the above-described form, the heating means for heating the solid oil by the combustion exhaust gas collects and heats the combustion exhaust gas generated from the plurality of pulse combustors 6A to 6D, so that a highly efficient pulse is obtained. Even if the calorific value of the combustion exhaust gas is low in the combustors 6A to 6D, a sufficient amount of heat can be imparted to the solid oil. Therefore, it is possible to reliably melt the amount necessary for the addition oil.
Further, since the heating means heats the lower region of the Ito can 42 by the combustion exhaust of the pulse combustor 6A, which is frequently used, the lower region where the solid oil always exists is efficiently heated. The

In the invention relating to the heating means that collects and heats the combustion exhaust gas generated from a plurality of combustors, the number of oil tanks is not limited to the above form, and can be changed as appropriate. Any oil tank in which a combustor is provided for each of a plurality of divided cooking chambers may be used. The heating means is not limited to the pulse combustor, and a burner or the like can be employed. An electric heater can also be omitted.
In addition, in the above configuration, only the right heat transfer wall is divided up and down in the above configuration, but depending on the number of combustors, the left and rear heat transfer walls can be divided up and down. The heat transfer walls may be connected in a L shape or a U shape in plan view on a plurality of surfaces without being independent for each surface. In this case as well, it is possible to divide up and down, and three or more divisions are possible. Furthermore, depending on the structure of taking in and out the oil container, it is possible to provide a heat transfer wall on all four surrounding surfaces, or to provide a heat transfer wall on the upper surface.

And according to the fryer 1 of the said form, energization to the electric heater 43 is controlled based on the detection temperature of the solid oil by the temperature detection means (thermal insulation thermistor 44), and the temperature of the solid oil is set to a predetermined temperature (here, 80 ° C. ) To maintain the solid oil in a liquefied state so that the additional oil can correspond to the required timing, and to prevent deterioration of the solid oil due to excessive heating. it can.
In particular, here, the controller 25 continues energization of the electric heater 43 when the temperature detected by the thermal insulation thermistor 44 is equal to or lower than a first temperature (40 ° C. in this case) lower than the predetermined temperature, and the detected temperature is lower than the predetermined temperature. When the temperature is lower than the second temperature (here, 60 ° C.) lower than the first temperature, the electric heater 43 is energized intermittently, so that effective heating according to the detected temperature is performed. Is possible.

  In the invention in which the solid oil is maintained at a predetermined temperature by the temperature detection means and the control means, the number of oil tanks is not limited to the above form, and may be changed as appropriate and may be a plurality of oil tanks that are not divided by partition walls. However, a single oil tank may be used. The heating means is not limited to the pulse combustor, and a burner, an electric heater, or the like can be employed. Also, a solid oil melting device can be omitted.

  1. ・ Flyer, 2. ・ Body, 3. ・ Oil tank, 5 (5A to 5F) ・ ・ Cooking chamber, 6 (6A to 6F) ・ ・ Pulse combustor, 7 ・ ・ Combustion chamber, 8 ・ Tail pipe , 18 (18A to 18F) ··· First exhaust pipe, 20 (20A to 20D) · · Second exhaust pipe, 25 · · Controller, 26 · · Filtering tank, 27 · · Oil drain tube, 28 · · Oil drain branch Pipe 29, ... Electric oil drain valve, 30 ... Pump, 31 ... Oil supply pipe, 32 ... Oil supply branch pipe, 33 ... Electric oil supply valve, 36 ... Suction pipe, 37 ... First suction branch pipe, 38 .. Second suction branch pipe, 39, 40 .. Switching valve, 41 .. Oil container arrangement part, 42 .. Ito can, 43 .. Electric motor, 44 .. Thermal insulation thermistor, 45 .. Detection switch, 46..Solid oil melting machine, 47..Bottom plate, 48 to 51..Heat transfer wall.

Claims (3)

One or more oil tanks in which cooking oil is stored;
A plurality of combustors that are provided in the oil tank and heat the cooking oil by burning a mixed gas of fuel gas and combustion air;
An oil container placement section for placing an oil container in which solid oil is stored; and
Heating means for heating the solid oil in the oil container by combustion exhaust generated from the combustor;
An oil supply means for supplying the liquefied solid oil from the oil container to the oil tank,
The heating means includes a plurality of upstream exhaust pipes connected to the plurality of combustors, and a plurality of internal flow flows provided in the oil container disposition portion and each of the upstream exhaust pipes individually connected. A solid oil melter provided with a passage, and a plurality of downstream exhaust pipes connected to a plurality of exhaust mufflers provided downstream from each internal flow path of the solid oil melter, A fryer characterized in that combustion oil generated from a plurality of combustors passes through the solid oil melter independently, whereby the solid oil is heated . The upstream exhaust pipe and the downstream exhaust pipe of the combustor that are frequently used are connected to the internal flow path corresponding to the lower region of the oil container in the solid oil melting device. The flyer according to claim 1. The solid oil melting device is formed with a bottom plate on which the oil container is placed, and the internal flow path which is erected on the bottom plate and surrounds the oil container, with the lower side serving as an inlet and the upper side serving as an outlet. A plurality of hollow heat transfer walls, the upstream exhaust pipe is connected to the inlet of the internal flow path in each of the heat transfer walls, and the outlet of the internal flow path in each of the heat transfer walls is The flyer according to claim 1 or 2, wherein the downstream exhaust pipes are connected to each other.

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