JP2007303707A - Dryer - Google Patents

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Publication number
JP2007303707A
JP2007303707A JP2006131005A JP2006131005A JP2007303707A JP 2007303707 A JP2007303707 A JP 2007303707A JP 2006131005 A JP2006131005 A JP 2006131005A JP 2006131005 A JP2006131005 A JP 2006131005A JP 2007303707 A JP2007303707 A JP 2007303707A
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Japan
Prior art keywords
coil
shelf
sample
chamber
power
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Pending
Application number
JP2006131005A
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Japanese (ja)
Inventor
Yuji Kikuchi
祐二 菊地
Original Assignee
Tokyo Rika Kikai Kk
東京理化器械株式会社
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Priority to JP2006131005A priority Critical patent/JP2007303707A/en
Publication of JP2007303707A publication Critical patent/JP2007303707A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a dryer capable of easily changing a height of sample loading shelves, and surely increasing a temperature of a shelf heater to a prescribed temperature even when the height of the sample loading shelves is changed. <P>SOLUTION: In this vacuum dryer 1 wherein the sample loading shelves 5 integrated with the shelf heater 5a are arranged in a chamber 2 in plural stages, and the sample loading shelves 5 are heated by the shelf heater 5a to dry a sample, a power receiving-side coil 6 distributing electricity to the shelf heater 5a is integrally disposed on an end portion of the sample loading shelves 5, a power feed-side coil 7 corresponding to the power receiving-side coil 6 is disposed on an outer surface of the chamber 2, and electric power is transferred to the shelf heater 5a by electromagnetic induction from the power feeding-side coil 7 to the power receiving-side coil 6 to heat the sample loading shelves 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dryer that directly heats a placed sample and dries it with a shelf heater provided on a sample placement shelf.

In a vacuum dryer in which a plurality of sample mounting shelves provided with a shelf heater are arranged in a chamber and the sample placed by the shelf heater is dried while being heated in vacuum, an external device for energizing the shelf heater is provided. Wiring from the power source is connected through a vacuum connector provided through the side of the chamber (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 61-63692

  However, in the vacuum dryer as described above, the sample mounting shelf is supported by a guide rail provided on the inner wall of the chamber, and when changing the height of the sample mounting shelf, the sample mounting shelf Is replaced with a guide rail having a desired height, and accordingly, it is necessary to replace the vacuum connector disposed at the rear end of the guide rail, which is troublesome. In addition, if the connector is not inserted properly at the time of replacement, the shelf heater cannot be energized, so the temperature cannot be raised. Furthermore, when corrosive gas is generated from the sample being dried, metal parts such as vacuum connectors and wirings may be corroded by the corrosive gas, causing a problem.

  Therefore, the present invention can easily change the height of the sample mounting shelf, and when changing the height of the sample mounting shelf, omits the work of detaching the connector in a narrow chamber. Accordingly, it is an object of the present invention to provide a dryer that can always perform appropriate control by eliminating problems such as poor insertion of a connector and corrosion of a metal part of a connector part and a wiring part.

  In order to achieve the above object, the present invention provides a sample mounting shelf provided with a shelf heater in a plurality of stages in a chamber, and a dryer for directly heating and drying the placed sample with the shelf heater. A power receiving side for supplying electric power to the shelf heater by electromagnetic induction to the power receiving side coil on the outer surface of the chamber while integrally providing a power receiving side coil for energizing the shelf heater at the end of the sample mounting shelf A coil is provided, and the chamber is preferably formed of a non-magnetic material at a portion where the power transmission side coil and the power reception side coil face each other. Further, the circuit and wiring of the power receiving side coil may be molded with a resin material, and a plurality of the power transmitting side coils may be provided according to the installation position of the sample mounting shelf at each stage.

  According to the dryer of the present invention, power can be transmitted from the external power source to the shelf heater in a non-contact manner, so that the replacement work of the connector is not necessary, the height of the sample mounting shelf can be easily changed, and the sample Even if the height of the mounting shelf is changed, the shelf heater can be reliably raised to a predetermined temperature. In addition, by providing a plurality of power transmission coils in advance according to the installation positions of the sample mounting shelves at each stage, it is possible to generate power from the power transmission coils to the power receiving coils simply by installing the sample mounting shelves at predetermined stages. Transmission is possible, and the shelf heater can be reliably raised to a predetermined temperature. Furthermore, by forming only the part where the power transmission side coil and the power reception side coil face each other with a non-magnetic material and forming the other part with an inexpensive material, an increase in manufacturing cost can be suppressed. Depending on the sample to be dried, corrosive gas may be generated during drying. However, the circuit and wiring can be prevented from being corroded by molding the power receiving coil with a resin material.

  Hereinafter, an embodiment in which the present invention is applied to a vacuum dryer will be described in detail with reference to the drawings. FIG. 1 is an explanatory sectional view showing an embodiment of a vacuum dryer. The vacuum dryer 1 includes a stainless steel chamber 2 and a chamber door 3 attached to the front surface of the chamber 2 so as to be opened and closed. Then, the chamber door 3 is closed and sealed, and the connection port of the vacuum pump communicating with the chamber 2 is connected to the vacuum pump to evacuate the chamber 2.

  A three-stage guide rail 4 is provided in the chamber 2, and a sample placement shelf 5 integrally provided with a shelf heater 5 a is mounted on the guide rail 4. A power receiving coil 6 for energizing the shelf heater 5 a is integrally provided at the rear end portion of each sample mounting shelf 5. Three power transmission side coils 7 are arranged on the outer surface of the chamber 2 in correspondence with the arrangement positions of the power reception side coils 6 attached to the respective sample mounting shelves 5 attached to the three-stage guide rails 4. In addition, a portion of the side wall of the chamber 2 where the power receiving side coil 6 and the power transmitting side coil 7 face each other is formed of a nonmagnetic material M such as nonmagnetic stainless steel. The power receiving side coil 6 has a circuit and wiring molded with a resin material.

  In the vacuum dryer 1, for example, when a sample is dried using the upper stage and the middle stage, the sample placement shelf 5, 5 is inserted into the upper and middle guide rails 4, 4, respectively. The 5 and 5 power receiving side coils 6 and 6 and the power transmitting side coils 7 and 7 face each other across the side wall of the chamber 2, so that the shelf heater 5 a of each sample mounting shelf 5 can be energized. After each sample mounting shelf 5 on which a sample is placed is inserted into the guide rail 4, the vacuum pump is operated to evacuate the inside of the chamber 2, and then the shelf heater 5 a of each sample mounting shelf 5 is energized. Raise 5a to the desired temperature and heat the sample to dry.

  Thus, since the shelf heater 5a of each sample mounting shelf 5 can transmit electric power from an external power source in a non-contact manner, when changing the position of the sample mounting shelf 5, it is necessary to replace the connector as in the prior art. Thus, the height of the sample mounting shelf 5 can be easily changed, and even if the height of the sample mounting shelf 5 is changed, the power is transmitted from the coil 7 to the shelf heater 5a via the power receiving coil 6. Since electric power can be supplied reliably, the sample mounting shelf 5 can be reliably raised to a predetermined temperature. In addition, by providing a plurality of power transmission side coils 7 in advance according to the installation positions of the sample mounting shelves 5 at each stage, it is possible to receive power from the power transmission side coil 7 simply by installing the sample mounting shelves 5 at predetermined stages. Power can be transmitted to the side coil 6, and the sample mounting shelf 5 can be reliably raised to a predetermined temperature. Further, by forming at least a portion where the power transmission side coil 7 and the power reception side coil 6 are opposed to each other with a nonmagnetic material, the manufacturing cost can be reduced as compared with a case where the whole is formed with a nonmagnetic material. Further, depending on the sample to be dried, corrosive gas may be generated during drying, but by correlating each power receiving side coil 6 with a resin material, it is possible to prevent the circuit and wiring from being corroded.

  In addition, the present invention is not limited to the application to a vacuum dryer in which a sample is placed in a vacuum while heating the sample mounting shelf as in the above-described embodiment, and the sample is usually dried by heating the inside of the chamber. It can also be applied to other dryers. Further, the present invention can also be applied to a low-temperature dryer that evacuates the chamber and dries the sample at low temperature.

[Experimental Example 1]
An experiment performed using an experimental apparatus for contactless power transmission as shown in FIG. 2 will be described. The non-contact power transmission experimental apparatus shown in FIG. 2 is provided with a power receiving side coil 6 and a power transmitting side coil 7 with a nonmagnetic material M interposed therebetween, and the power receiving side coil 6 is provided on the sample mounting shelf 5. A shelf heater 5a is connected. Input power supply voltage: AC100V, induction voltage (output voltage): DC24V, use shelf heater capacity: 50W, using DC24V power supply, the shelf heater 5a of the sample placement shelf 5 is energized to determine the surface temperature of the sample placement shelf 5 The rise time was measured. The result is shown in FIG.

  The surface temperature of the sample mounting shelf 5 before energization was about 25 ° C. The surface temperature rose about 15 ° C. per minute until 6 minutes passed, and the surface temperature reached about 115 ° C. after 6 minutes. The surface temperature gradually increased after 6 minutes and reached about 155 ° C. after 27 minutes.

[Experiment 2]
Using a switching power supply having the same output as the non-contact power transmission experimental apparatus of Experimental Example 1, the shelf heater 5a is energized with a shelf heater capacity of 60 W and a vacuum level of 5 mmHg, and the surface temperature of the sample mounting shelf 5 And rise time were measured. The result is shown in FIG.

  The surface temperature of the sample mounting shelf 5 before energization was about 20 ° C. It was about 110 ° C. after 4 minutes, about 150 ° C. after 8 minutes, and about 180 ° C. after 12 minutes.

[Experiment 3]
Using a switching power supply having the same output as the non-contact power transmission experimental apparatus of Experimental Example 1, the shelf heater capacity is 60 W, the shelf heater 5 a is energized at atmospheric pressure, the surface temperature of the sample mounting shelf 5 and the rise time Was measured. The result is shown in FIG.

  The surface temperature of the sample mounting shelf 5 before energization was about 30 ° C. The temperature was about 130 ° C. after 5 minutes, about 160 ° C. after 10 minutes, and about 180 ° C. after 35 minutes.

It is sectional explanatory drawing which shows one example of the vacuum dryer of this invention. It is explanatory drawing which shows the experimental apparatus of non-contact electric power transmission. It is a figure which shows the result of having supplied with electricity to the shelf heater of the experimental apparatus of non-contact electric power transmission, and having measured the surface temperature and rising time of the sample mounting shelf. It is a figure which shows the result of having energized a shelf heater in the vacuum state using the switching power supply equivalent to the experimental apparatus of non-contact electric power transmission, and measuring the surface temperature and rising time of the sample mounting shelf. It is a figure which shows the result of having energized a shelf heater in the atmospheric | air pressure state using the switching power supply equivalent to the experimental apparatus of non-contact electric power transmission, and measuring the surface temperature and rising time of the sample mounting shelf.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vacuum dryer, 2 ... Chamber, 3 ... Chamber door, 4 ... Guide rail, 5 ... Sample mounting shelf, 5a ... Shelf heater, 6 ... Power receiving side coil, 7 ... Power transmission side coil

Claims (4)

  1. In a dryer in which a plurality of stages of sample mounting shelves provided with a shelf heater are arranged in the chamber, and the sample heated by the shelf heater is directly heated and dried, the end of the sample mounting shelf is A drying coil characterized in that a power receiving coil for energizing the shelf heater is integrally provided, and a power transmission coil for supplying power to the shelf heater by electromagnetic induction to the power receiving coil is disposed on the outer surface of the chamber. vessel.
  2. 2. The dryer according to claim 1, wherein the chamber is formed of a nonmagnetic material at a portion where the power transmission side coil and the power reception side coil face each other.
  3. The dryer according to claim 1 or 2, wherein a circuit and wiring of the power receiving side coil are molded with a resin material.
  4. The dryer according to any one of claims 1 to 3, wherein a plurality of the power transmission side coils are provided in accordance with the installation positions of the sample placement shelves at each stage.
JP2006131005A 2006-05-10 2006-05-10 Dryer Pending JP2007303707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006131005A JP2007303707A (en) 2006-05-10 2006-05-10 Dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006131005A JP2007303707A (en) 2006-05-10 2006-05-10 Dryer

Publications (1)

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JP2007303707A true JP2007303707A (en) 2007-11-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2062801A1 (en) 2007-11-22 2009-05-27 Denso Corporation Power supply system with multiphase motor and multiphase inverter
KR101155813B1 (en) 2011-08-24 2012-06-12 (주)써모니크 Graphite furnace

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163692A (en) * 1984-09-03 1986-04-01 Hiroaki Sawai Novel 2'-5' oligoadenylic acid compound, preparation thereof and antigen for 125i-labeling composed of same used for 2'5' oligoadenylic acid measurement by radioimmunoassay
JPH0320644U (en) * 1989-07-11 1991-02-28
JPH03165013A (en) * 1989-11-24 1991-07-17 Mitsubishi Electric Corp Power supplying apparatus through wall
JPH0961054A (en) * 1995-08-28 1997-03-07 Nippon Avionics Co Ltd Heater structure of vacuum oven chamber
JPH10128296A (en) * 1996-10-28 1998-05-19 Matsushita Electric Works Ltd Garbage treating device
JPH1183282A (en) * 1997-09-16 1999-03-26 Sanyo Electric Co Ltd Moisture condensation proof unit for door body of showcase
JP2000358301A (en) * 1999-06-11 2000-12-26 Hitachi Kiden Kogyo Ltd Noncontact load-dispatching equipment
JP2005269857A (en) * 2004-03-22 2005-09-29 Hitachi Kiden Kogyo Ltd Non-contact power feeder apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163692A (en) * 1984-09-03 1986-04-01 Hiroaki Sawai Novel 2'-5' oligoadenylic acid compound, preparation thereof and antigen for 125i-labeling composed of same used for 2'5' oligoadenylic acid measurement by radioimmunoassay
JPH0320644U (en) * 1989-07-11 1991-02-28
JPH03165013A (en) * 1989-11-24 1991-07-17 Mitsubishi Electric Corp Power supplying apparatus through wall
JPH0961054A (en) * 1995-08-28 1997-03-07 Nippon Avionics Co Ltd Heater structure of vacuum oven chamber
JPH10128296A (en) * 1996-10-28 1998-05-19 Matsushita Electric Works Ltd Garbage treating device
JPH1183282A (en) * 1997-09-16 1999-03-26 Sanyo Electric Co Ltd Moisture condensation proof unit for door body of showcase
JP2000358301A (en) * 1999-06-11 2000-12-26 Hitachi Kiden Kogyo Ltd Noncontact load-dispatching equipment
JP2005269857A (en) * 2004-03-22 2005-09-29 Hitachi Kiden Kogyo Ltd Non-contact power feeder apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2062801A1 (en) 2007-11-22 2009-05-27 Denso Corporation Power supply system with multiphase motor and multiphase inverter
KR101155813B1 (en) 2011-08-24 2012-06-12 (주)써모니크 Graphite furnace

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