JP3155697U - Heating device - Google Patents

Abstract

A heating device capable of preventing liquid in a physics and chemistry container such as a flask from entering the inside. A heating apparatus for heating a container such as a physics and chemistry container, wherein the metal plate housing 1 having a cylindrical body portion 10 and the top plate portion 20 that closes the upper end of the body portion are arranged at a substantially central portion. A heat exchange accommodating portion 21 having an upper end opening capable of accommodating a substantially lower half portion of the container is provided, and the accommodating portion is provided on the substantially upper half side in the trunk portion so as to be integrally formed with the trunk portion. The heating part 2 made from a metal plate is provided. A heating element 3 for heating the housing portion is provided in the body portion of the housing. [Selection] Figure 1

Description

  The present invention relates to a heating device for heating a physics and chemistry container or other containers. More specifically, the present invention mainly relates to a heating apparatus that heats a flask, beaker, or other physics and chemistry vessel in various physics and chemistry experiments such as reaction, distillation, fractional distillation, extraction, and the like.

Conventionally, for example, as shown in FIG. 5, for example, a heating apparatus for heating a physics and chemistry container is generally known. This conventional heating device (generally referred to as a mantle heater) has a shape of a substantially lower half of a vessel 101 such as a flask or the like in the upper center of a heat-resistant furnace 100 as shown in FIG. A semicircular heating housing portion 102 having a suitable shape is formed, and a heater 103 (heat generating portion) is disposed around the housing portion 102. And the lower half part of the container 101 is accommodated and placed in the accommodating part 102, and the container 101 is heated.
Further, the furnace stand 100 is accommodated in an outer container 104 made of a metal plate, and an annular flange 105 bent inward is formed at the upper end of the opening of the container 104. It is comprised so that it may contact | abut and hold a furnace stand. In the figure, reference numeral 106 denotes an insertion plug. In addition, although the heating apparatus of FIG. 5 illustrated what accommodated the furnace stand 100 in the exterior container 104, there exist some which do not comprise the said container 104 (for example, refer patent document 1).

The conventional heating device having the above configuration has the following problems. That is, the furnace 100 is constructed by overlaying cloth materials such as glass wool, rock wool, and ceramic fibers, and has air permeability (gas flowability). And most of the upper-end side of the furnace stand 100 including the accommodating part 102 is exposed outside. For this reason, for example, when a physics and chemistry container such as a flask is broken during use, or a sample (liquid) is blown out or spills, the sample soaks into the furnace table and reaches the heater 103 part to reach the heater ( In general, this may cause corrosion of nichrome wire) and may ignite if the sample is alcohol.
In addition, for example, the gas atmosphere in the laboratory often contains alcohol gas such as ether, but the conventional heating device has a gas flow from the upper part of the furnace base to the furnace base, and therefore, In other words, it is almost the same as open flame. Therefore, it is pointed out that there is also a danger in this aspect.

Japanese Patent Laid-Open No. 9-255715

  The present invention has been made in view of the above-described circumstances, and prevents the sample from entering the interior of the laboratory vessel and other containers when they are damaged or spilled, and gas inside the laboratory is introduced into the interior. An object of the present invention is to provide a heating device that can prevent distribution. Another object of the present invention is to provide a heating device capable of improving the efficiency of heat conduction to the container.

In order to achieve the above object, one of the present inventions (first invention) is a heating device for heating a physics and chemistry container and other containers,
A metal plate housing having a cylindrical body;
A top plate portion that closes the upper end of the body portion; and a heat exchange housing portion having an upper end opening formed at a substantially central portion of the top plate portion, the housing portion being located on the substantially upper half side in the body portion A heating part made of a metal plate disposed and formed integrally with the body part,
A heat generating part that is disposed within the body of the housing and heats the housing;
It is characterized by having.
In the present invention, the term “integrally formed” is a concept that includes both a structure in which the heating part and the cylindrical body part are integrated by means such as welding and a structure in which both are integrally formed using the same material. It is used as.

  Among the present inventions, another one of the inventions (second invention) is the heating device according to the first invention, wherein the heat exchange accommodating portion is substantially the same as the shape of the lower half of the physics and chemistry container or other containers. It is formed in a corresponding shape.

  Among the present inventions, still another invention (third invention) is the heating device according to the first or second invention, wherein the heat exchange accommodating portion has a substantially semispherical inner wall surface. It is formed in the shape.

  Among the present inventions, another one of the inventions (fourth invention) is the heating device of the first or second invention, wherein the heat exchange accommodating portion has a substantially bottomed cylindrical inner wall surface. It is formed in the shape.

  Among the present inventions, another one of the inventions (fifth invention) is a heating device according to any one of the first to fourth inventions, and is provided so as to protrude from the bottom of the heat exchange accommodating portion, It further comprises a drain pipe that communicates the inside of the housing portion with the outside of the housing.

According to this invention, there exist the following effects.
(1) It is possible to prevent the sample from entering the housing of the heating device even if a physicochemical container such as a flask is broken during use, or a sample (liquid) is blown out or drips.
(2) Gas is prevented from flowing from the upper side of the heating device into the housing. Therefore, for example, it is possible to prevent a risk that a gas atmosphere containing alcohols in a laboratory or the like enters the housing and ignites.
(3) The efficiency of heat conduction to physics and chemistry containers and other containers can be improved.
(4) According to the fifth device, in addition to the above-described effect, the liquid such as the sample flowing into the heat exchange accommodating portion can be easily and quickly and well discharged to the outside (outside the housing) through the drain line. it can.

It is a longitudinal section showing roughly the composition of the heating device of one embodiment of the present invention. It is a longitudinal cross-sectional view which shows schematically the structure of the housing and heating part which were employ | adopted as the heating apparatus of FIG. It is the perspective view seen from the bottom part side which shows roughly the composition of the exothermic part and heater support part which were adopted as the heating device. It is a longitudinal cross-sectional view which shows schematically the structure of the heating apparatus of other embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of an example of the conventional heating apparatus roughly.

  Hereinafter, an example of an embodiment of a heating device of the present invention will be described with reference to the drawings.

  1 to 3 show a heating device according to an embodiment (Embodiment 1) of the present invention. As shown in FIGS. 1 to 3, the heating device according to the first embodiment includes a housing 1, a heating unit 2, and a heating unit 3 (heater).

  The housing 1 is made of a stainless steel plate, an iron plate, or another metal plate, and has a cylindrical body 10 having a desired cylindrical shape or rectangular tube shape (cylindrical shape in the first embodiment). In the housing 1 of the first embodiment, a bottom cover portion 11 is provided at the lower end of the body portion 10. The illustrated bottom lid portion 11 is configured by closing the lower end of a cylindrical body 12 fitted into the body portion 10 with a bottom plate 13, and the cylindrical body 12 of the bottom lid portion 11 is fitted to the lower end portion of the body portion 10. The cylindrical body 12 is fixed to the lower end portion of the body portion 10 with screws 14 and nuts 15. In the first embodiment, the nut 15 is fixed to a predetermined portion of the cylindrical body 12 by welding or other means. In this case, the bottom lid portion 11 may be reverse to the illustrated state, that is, a configuration in which the bottom plate 13 side is positioned at the upper portion and fixed to the trunk portion. When adopting this configuration, the nut 15 may not be fixed to the cylindrical body 12 by welding or the like.

The said heating part 2 is comprised with the stainless steel plate, the iron plate, and other metal plates. The heating unit 2 is formed at a top plate portion 20 that closes the upper end of the body portion 10 and a substantially central portion of the top plate portion 20, and accommodates and heats a physicochemical container such as a flask or a beaker 200. It has a heat exchange accommodating portion 21 (heating accommodating portion) having an upper end opening. The heating unit 2 is provided in the housing 1 so that the housing unit 21 is disposed on the substantially upper half side in the body unit 10 and formed integrally with the body unit 10.
In the first embodiment, the entire outer peripheral edge of the top plate portion 20 is welded 18 to the upper edge of the trunk portion 10 and formed integrally with the trunk portion 10. In this case, it is needless to say that the heating unit 2 and the body unit 10 may be configured to be integrally formed using the same metal plate material. The configuration of this modification is the same in the embodiments described later.

  The container 200 is heated with its substantially lower half housed in the housing 21. The heating device of Embodiment 1 is configured to heat a container of a round bottom flask, and the container 21 has an inner wall surface having a shape substantially corresponding to the shape of the substantially lower half of the container 200 (round bottom flask in the drawing). What is formed in the shape of a substantially semicircular spherical container is disclosed. In this case, for example, when configured to heat a container such as a beaker, the accommodating portion 21 is formed in a substantially container shape such as a substantially bottomed cylindrical shape having an inner wall surface substantially corresponding to the shape of the container. It is something that can be done. This also applies to the embodiments described later.

  The heat generating part 3 (heater) heats the accommodating part 21 of the heating part 2. The first embodiment employs a sheathed heater as the heat generating portion 3. The sheathed heater is, for example, a heater configured by inserting a heating wire in the center of a metal tube, filling the tube with an insulating powder, and compressing the insulating powder. This sheathed heater can be manufactured in any shape and is generally commercially available. Any of these commercially available products can be selected and employed. In the present embodiment, both ends of the circular portion 30 formed in a circular substantially double-winding shape having a diameter corresponding to the diameter of the bottom portion somewhat from the position of the intermediate portion of the accommodating portion 21 are bent at a substantially right angle. The shape in which the straight portions 31a and 31b are formed is employed. The heater of the present embodiment is configured by a heat generating portion that generates heat at the portion of the circular portion 30, and the portions of the straight portions 31a and 31b are configured by non-heat generating portions.

  The heating device of the present embodiment includes a heater support portion 4 made of stainless steel, iron plate, or other metal plate. As shown in detail in FIG. 3, the support portion 4 extends from the substrate 40 and a plurality of (four in the drawing) support pieces 41a, 41b, 41c, and 41d that support the circular portion 30. With. The length of each of the support pieces 41a... 41d is formed to correspond to the diameter of the circular portion 30. A through hole 42 through which a screw rod, which will be described later, passes is provided at the center of the substrate 40 of the support portion 4.

  The heat generating part 3 is provided by bringing the circular part 30 into contact with the bottom side of the accommodating part 21 and supporting it with the support pieces 41a. In the first embodiment, a tray-shaped short cylindrical portion 22 having an appropriate diameter is provided at the center of the bottom of the accommodating portion 21 of the heating unit 2, and a screw rod having an appropriate diameter and length from the central portion of the short cylindrical portion 22. 23 is protruded. The circular portion 30 of the heat generating portion 3 is brought into contact with the bottom side of the accommodating portion 21 and the screw rod 23 is passed through the through hole 42 of the support portion 4 so that the circular portion is supported by each support piece. The support portion 4 is fixed to the short cylindrical portion 22 of the housing portion by tightening with the above.

  As described above, the heat generating portion 3 is stably supported by the support portion 4 in a state where the circular portion 30 is in contact with the bottom side of the accommodating portion 21. The accommodating portion 21 is configured to be heated substantially entirely by the heat generating portion 3.

  The lead wire 32 of the heat generating part 3 is led out of the housing 1. In this embodiment, a hole 16 is provided in the bottom plate 13 of the bottom lid portion 11 of the housing 1, and a lead wire 32 is led out from the hole 16. In FIG. 1, reference numeral 33 denotes an insertion plug attached to the tip of a lead wire 32 (cord).

  In addition, although the example which employ | adopted the sheathed sheeter as the heat generating part 3 was disclosed in Embodiment 1, it cannot be overemphasized that the heat generating part 3 can comprise what was comprised with heat generating lines, such as a nichrome wire. This also applies to the embodiments described later.

  In the heating device of the present embodiment, a heat insulating member 5 for imparting heat insulating properties is filled in the housing 1. Although it does not specifically limit as the heat insulation member 5, For example, the member formed in the cotton form and cloth shape which have heat resistance and insulation, such as glass wool, rock wool, or a ceramic fiber, can be employ | adopted. As described above, the heat insulating member 5 is set in a state where the heat generating portion 3 is supported by the support portion 4 and then filled into the body portion 10 of the housing. Next, the bottom cover portion 11 is attached to the lower end portion of the body portion 10.

  The heating apparatus according to the first embodiment is configured as described above, and is used alone or set on a stand or rack (not shown). In this heating apparatus, for example, the lower half of the container 200 (round bottom flask in the figure) containing a sample or the like is accommodated in the accommodating portion 21 and a power switch (not shown) is turned on. Then, the container 200 is heated by the heat generating part 3 through the accommodating part 21, and distillation, fractional distillation, reaction, extraction, and other various physics and chemistry experiments are performed in the same manner as in the past.

  FIG. 4 shows a heating device according to another embodiment (second embodiment) of the present invention. In the heating apparatus of the second embodiment, the same reference numerals are given to the same components as those already described in the first embodiment, and the description thereof is omitted. The heating device of the second embodiment is characterized in that the drain device is provided in the heating device of the first embodiment.

  As shown in FIG. 4, the heating apparatus according to the second embodiment includes a drain pipe line 6. The drain line 6 is provided so as to protrude from the bottom of the heat exchange accommodating portion 21 of the heating portion 2, and the inside of the accommodating portion 21 communicates with the outside of the housing 1, so that liquid such as a sample flowing into the accommodating portion 21 is discharged. It is discharged (outflow) to the outside.

  The drain pipe line 6 of the embodiment includes a first pipe body 60 made of stainless steel, iron, or other metal having an appropriate diameter and length, and a second pipe body 61. In addition, a hole 25 through which the first tubular body 60 is inserted is provided at the center of the short cylindrical portion 22 provided in the accommodating portion 21. The first tubular body 60 is provided so as to be inserted into the hole 25 and fixed to the short cylindrical portion 22 by welding or the like.

  A thread groove 62 (male thread groove) is formed on the outer peripheral surface of the first tubular body 60. In addition, a through hole (reference numeral omitted) through which the first tubular body 60 passes is provided in a substantially central portion of the substrate 40 of the heater support portion 4 of the second embodiment. Then, as in the first embodiment, the circular portion 30 of the heat generating portion 3 is brought into contact with the bottom portion side of the accommodating portion 21 and the first tubular body 60 is passed through the through hole of the substrate 40 of the supporting portion 4 so as to support each support piece 41a. The circular portion 30 is supported by 41d, and in this state, the nut 63 is screwed into the tube body 60 and tightened to fix the support portion 4 to the short cylindrical portion 22 of the housing portion.

  As described above, similarly to the first embodiment, the heat generating portion 3 is stably supported by the support portion 4 in a state where the circular portion 30 is in contact with the bottom side of the accommodating portion 21. And the accommodating part 21 is comprised so that it may be heated substantially entirely by the heat-emitting part 3. FIG.

  A female screw groove (not shown) is provided on the inner peripheral wall surface on the lower end side of the first tubular body 60. In addition, a male thread groove (reference numeral omitted) that engages with the thread groove is provided on the outer peripheral wall surface on one end side of the second tubular body 61. The second tube 61 is connected by screwing the one end side to the first tube 60.

  The other end side (the lower end side in FIG. 4) of the second tubular body 61 penetrates the hole 17 provided in the bottom plate 13 of the bottom cover part 11 and protrudes out of the housing 1, and the discharge port 64 (outflow port) is formed by the protruding end. ). As a result, a drain conduit 6 is formed in the accommodating portion 21 to communicate the substantially central portion of the bottom portion of the accommodating portion 21 with the outside on the lower end side outside the housing 1. Accordingly, the liquid such as the sample that has flowed into the storage unit 30 is discharged (outflowed) out of the housing through the drain pipe line 6.

  The lead wire 32 of the heat generating portion 3 is led out of the housing 1 through a hole 16A provided in the bottom plate 13 of the bottom lid portion 11. The bottom cover portion 11 of the second embodiment is opposite to the bottom cover portion of the first embodiment, that is, the bottom plate 13 side is positioned at the upper portion and is fitted to the body portion 10, and the body is secured by screws 14 and nuts 15. It is fixed to the part 10. Other configurations are the same as those of the first embodiment.

  The heating device of the second embodiment is configured as described above, and is used in the same manner as the heating device of the first embodiment. Thereby, there exists an effect similar to Embodiment 1. In addition, according to the heating device of the second embodiment, the liquid such as the sample that has flowed into the heat exchange accommodating portion can be easily and quickly discharged to the outside (outside the housing) through the drain line.

  Note that the heating device of each of the above embodiments is disclosed as an example, and the present invention is not limited to the above embodiment, and is arbitrary within the scope not departing from the technical idea described in the claims of the utility model registration. It can be changed to

DESCRIPTION OF SYMBOLS 1 Housing 2 Heating part 3 Heat generating part 10 Cylindrical trunk | drum 20 Top plate part 21 Heat exchange accommodating part

Claims (5)

A heating device for heating a physics and chemistry container and other containers,
A metal plate housing having a cylindrical body;
A top plate portion that closes the upper end of the body portion; and a heat exchange housing portion having an upper end opening formed at a substantially central portion of the top plate portion, the housing portion being located on the substantially upper half side in the body portion A heating part made of a metal plate disposed and formed integrally with the body part,
A heat generating part that is disposed within the body of the housing and heats the housing;
A heating device comprising:   The heating apparatus according to claim 1, wherein the heat exchange container is formed in a shape substantially corresponding to a shape of a substantially lower half of the physics and chemistry container or other container.   The heating apparatus according to claim 1, wherein the heat exchange accommodating portion is formed in a substantially container shape having a substantially semispherical inner wall surface.   The heating apparatus according to claim 1, wherein the heat exchange accommodating portion is formed in a substantially container shape having a substantially bottomed cylindrical inner wall surface.   5. The apparatus according to claim 1, further comprising a drain conduit that is provided so as to protrude from a bottom portion of the heat exchange accommodating portion and communicates the inside of the accommodating portion with the outside of the housing. Heating device.

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