KR200481285Y1

KR200481285Y1 - Modular heater for cylinder

Info

Publication number: KR200481285Y1
Application number: KR2020160001285U
Authority: KR
Inventors: 하수영
Original assignee: 하수영
Priority date: 2016-03-10
Filing date: 2016-03-10
Publication date: 2016-09-07

Abstract

The present invention relates to a ceramic heater for cylinder heating which is installed to heat a cylinder of an industrial machine such as an extruder and an extruder. An insertion groove is formed on the outer surface of a ceramic powder to be assembled into a pipe shape, To a ceramic heater for cylinder heating capable of improving the heating efficiency by solving the conventional problem that it is difficult to further mount the heat insulating plate on the structure of the ceramic heater.

Description

{MODULAR HEATER FOR CYLINDER}

The heater used in a cylinder (mold nozzle) of an injection machine, an extruder, or the like includes a cast heater, a band heater, a ceramic band heater and the like. The heater is installed in a ring or pipe shape, And heating of gas.

A typical casting heater is formed by inserting a heating wire into a bobbin or tube-shaped insulating covering material made of a ceramic material for mounting and transferring a heater coil (hot wire), and then forming a thermally conductive This excellent powder is injected, and the heater coil is integrated into the body by a casting production method.

However, in order to manufacture such a casting heater, it is necessary to press the stainless steel tube firmly to firmly close the metal powder. Therefore, it is difficult to process it, and after the heater coil is inserted into the outer tube body and the inner tube body, the thermally conductive metal powder is filled, And then the entire metal powder is compressed by using a hydraulic device, so that the metal powder inside the metal powder must be tightly adhered closely to each other, so that the entire manufacturing process is complicated and difficult.

In order to solve the above problems, a ceramic band heater is used which can exert heat uniformly to a heating object by using a ceramic having excellent heat resistance, high strength at high temperature and excellent electrical insulation.

Such a ceramic band heater is shown in Fig. 1 (hereinafter referred to as Fig. 1 for describing the prior art and in Figs. 2 to 4 for explaining the present invention) The heat wire 12 is embedded in the inner tube body 14 made of a ceramic material so that it is difficult to bend the hard ceramic body. And if a short circuit of the heating wire occurs during use, the heating wire can not be replaced and reused. Therefore, the entire band heater is discarded and the heater itself needs to be replaced, which increases the cost of the user.

As a conventional technique for solving the disadvantage of the ceramic band heater, a prefabricated ceramic heater such as the registered patent No. 10-1598472 (registered on June 23, 2016) is used.

The assembly type ceramic heater is formed by assembling a plurality of ceramic powders into which a heat ray is buried in a pipe shape through a male and female coupling structure and is fixed by a housing. It is easy and quick to fabricate a ceramic heater in which a heat ray is mounted, Since the heater is free to easily adhere to the outer circumferential surface of the object to be heated, the heating efficiency is excellent, and the heater can be easily and quickly disassembled and reassembled when a short-circuit of the heat wire occurs.

However, the assembly type ceramic heater having the above-described structure is disadvantageous in that it is difficult to directly install the heat insulating plate on the outer circumferential surface of the ceramic assembly in which the ceramic powder is assembled due to a plurality of ceramic powder connecting structures.

That is, the outer circumferential surface of the ceramic assembly must be surrounded by a heat insulating plate to prevent heat loss. In the assembled ceramic heater having the above structure, it is difficult to mount and adhere the heat insulating plate due to the bent structure, Even if a heat insulating plate is attached or embedded, a void space is formed between the powder and the housing, thereby deteriorating the heat insulating effect.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a ceramic heater for cylinder heating in which a plurality of ceramic powders are assembled into a pipe shape, It is an object of the present invention to provide a ceramic heater for cylinder heating which solves the problems of the conventional structure and can easily and quickly mount the heat insulating plate and can improve the heat insulating effect as the heat insulating plate comes into close contact with the ceramic powder.

In order to achieve the above object, the present invention provides a ceramic heater for cylinder heating,

A ceramic heater for cylinder heating, comprising a plurality of ceramic powders embedded in a heat pipe,

A ceramic powder having an insertion groove formed on an outer surface thereof; And

And an insulating plate coupled to the insertion groove.

In the assembled ceramic heater for cylinder heating according to the present invention,

Wherein the ceramic powder includes both side step portions protruding inward from an upper end of an inner wall of the insertion groove,

And the heat insulating plate is inserted into the insertion groove and is engaged by the step portion.

Further, in the assembly type ceramic heater for cylinder heating according to the present invention,

And an adhesive which is applied to the openings formed between the both side step portions and fixes the heat insulating plate.

Further, according to the present invention, in the assembly type ceramic heater for cylinder heating,

And a housing coupled to the ceramic powder so as to tighten and fix the assembled ceramic powder and having fastening means at both outer ends thereof.

The assembly-type ceramic heater for cylinder heating according to the present invention solves the structural problem of the conventional assembly type ceramic heater in which the insertion groove is formed on the outer surface of the ceramic powder and the heat insulating plate is coupled to the insertion groove, And it is easy to manufacture a ceramic powder having a heat insulating plate bonded thereto and to assemble the ceramic ceramic heater.

Particularly, in the assembly type ceramic heater for cylinder heating according to the present invention, since the heat insulating plate is closely attached to the ceramic powder constituting the ceramic assembly, the heat loss can be minimized, thereby maximizing the heating efficiency of the ceramic heater There is an effect that can be.

Further, in the assembly type ceramic heater for cylinder heating according to the present invention, the heat insulating plate is engaged with the step portion of the insertion groove to prevent the separation of the heat insulating plate. In addition, the adhesive is applied to the opening between the step portions and the heat insulating plate is bonded and bonded , The ceramic powder and the heat insulating plate are firmly mounted and fixed.

In addition, the assembly-type ceramic heater for cylinder heating according to the present invention has a structure in which the assembly type ceramic heater is firmly assembled through a housing having a fastening means that is tightened while being tightened while enclosing ceramic powders, .

1 is a perspective view of a conventional ceramic band heater;
Fig. 2 is a perspective view of the assembled ceramic heater according to the present invention, and a sectional view of the ceramic powder. Fig.
3 is a perspective view and a side view of the ceramic powder according to the present invention.
FIG. 4 is a cross-sectional view of a main portion for explaining fastening means provided in the housing according to the present invention. FIG.

The present invention will be described in detail with reference to the embodiments (embodiments) which can make various changes and can take various forms. It should be understood, however, that this invention is not intended to be limited to the particular forms disclosed, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness considering simplicity of understanding, etc. However, since the scope of protection of the present invention is limited It should not be.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first, second, third, etc. described in this specification are merely referred to in order to distinguish the different components from one another, and are not limited to the order in which they are manufactured, It may not match.

In the description of the assembly-type ceramic heater for cylinder heating according to the present invention, an unstructured approximate direction reference is specified with reference to FIG. 2, the upper, lower, left, and right directions are determined as the direction in which gravity acts, Unless otherwise specified in the detailed description of the design related to the other drawings and in the claims, directions are specified according to this standard.

Hereinafter, the assembly type ceramic heater 10 for cylinder heating according to the present invention will be described with reference to the accompanying drawings.

The ceramic heater 10 for cylinder heating according to the present invention is formed by assembling a plurality of ceramic powders 12 in which heat rays (not shown) are buried in a pipe shape,

A ceramic assembly 11 formed by assembling a plurality of ceramic powders 12 and a housing 15 capable of maintaining and installing the shape of the ceramic assembly 11 as shown in FIG.

The ceramic assembly 11 is mounted on a cylinder or the like of a mechanical device to heat the ceramic assembly 11 while the ceramic assembly 11 is fixed to the cylinder or the like while maintaining the assembled shape of the ceramic assembly 11. [ .

The ceramic assembly 11 is an assembled member in which a plurality of ceramic powders 12 are assembled into a pipe shape and the housing 15 is coupled to the outside thereof to maintain its shape, Can be banded through the means (S).

2 and 3, the ceramic powder 12 is a rod-like member having a predetermined length and is made of a ceramic material and has male or female engaging portions 12a or 12b on both sides, And a heat ray passing hole 13 is formed through both side surfaces of the ceramic powder 12.

The ceramic powder 12 is assembled into a ring shape through a male-female coupling structure with other ceramic powders 12 in the adjacent lateral direction, and such an assembly is vertically disposed to complete a pipe-shaped ceramic assembly 11 having a predetermined length do.

As shown in the figure, the ceramic powder 12 has a male engaging portion 12a on one side and an arm engaging portion 12b on the other side so that the same ceramic powder 12 is continuously and male- Also,

Alternatively, although not shown in the drawings, the ceramic powder having the male engaging portion and the ceramic powder having the female engaging portion may be cross-linked to each other by male or female engaging portions on both sides thereof.

The ceramic powder 12 has a plurality of heat ray passing holes 13 formed through both sides thereof along the longitudinal direction of the ceramic powder 12 and the heat ray passing holes 13, and the ceramic assembly 11 is bent and bent in a pipe shape by the housing 15, so that the ceramic assembly 11 is fixed to the cylinder or the like.

The ceramic powder 12 has an insertion groove 19 formed on the outer surface thereof and the heat insulating plate 20 is coupled to the insertion groove 19.

In this case, one heat insulating plate 20 connected in a strip shape is coupled to the continuously inserted insertion groove 19,

Or the heat insulating plate 20 having a shape corresponding to the insertion groove 19 may be individually coupled to the ceramic powder 12.

Accordingly, the ceramic assembly 11 is provided so as to surround the strip-shaped heat insulating plate 20 in the circumferential direction, thereby preventing the heat of the heat rays from being lost to the outside of the prefabricated ceramic heater 10,

Since the heat insulating plate 20 is in close contact with the ceramic powder 12, it is not necessary to use a separate component for mounting the heat insulating plate 20 and the heat insulating plate 20 can be partially replaced.

The ceramic powder 12 includes both side step portions 19a protruding inward from the upper end of the inner wall of the insertion groove 19,

The heat insulating plate 20 is inserted into the insertion groove 19 and is engaged by the step portion 19a.

It is possible to prevent the heat insulating plate 20 from being lifted and separated from the insertion groove 19 through the step portion 19a.

The present invention further includes an adhesive 21 applied to the openings formed between the both side step portions 19a to fix the heat insulating plate 20, as in the right side view of FIG.

It is preferable that the adhesive 21 is a heat resistant adhesive and that the cured adhesive 21 seals the opening between the step portions 19a to prevent the heat insulating plate 20 from being detached or separated from the insertion groove 19 can do.

At this time, the adhesive 21 may be applied to the ceramic powder before the assembly of the ceramic assembly,

Or after the ceramic assembly is assembled, the strip-shaped insulating plate 20 may be bonded.

As shown in FIGS. 2 and 3, the ceramic powder 12 has at least one heat transfer portion 14 formed on the inner surface thereof with a relatively thin thickness or in communication with the heat ray passing hole 13 do.

The heat transfer part 14 improves the heat transfer efficiency into the ceramic assembly 11, thereby improving the heating efficiency of the prefabricated ceramic heater.

2 and 3, the housing 15, in which the ceramic assembly 11 assembled in a pipe shape through the male and female coupling structures is received and fixed, is a band member made of metal such as stainless steel, And fastening means S is provided on the outer side of both ends.

First, the housing 15 has left and right lengths corresponding to the diameters of the ceramic assembly 11 to be assembled, and the upper and lower side walls 15A (only the upper side walls are shown in the drawing) So that when the fastening means S is tightened or loosened in the form of a pipe, both sides of the ceramic assembly 11 together with the ceramic assembly 11 are narrowed or widened to bend.

The housing 15 includes a retaining piece 15b for retaining the inner side surface of the ceramic assembly 11 so that the retaining piece 15b is received in the receiving portion of the housing 15, 15b are bent inward to prevent the ceramic assembly 11 from being detached from the housing 15.

The fastening means S of the housing 15 may be embodied in various ways that can be employed in a general band heater. In FIG. 2, a bolt connecting portion (not shown) 17a and 17b of the assembly type ceramic heater 10 are coupled with each other through the bolts 18 so that the assembly type ceramic heater 10 is bent and coupled by tightening the bolts.

The fastening means S may be deformed into one or more clamping members hinged to one end of the housing 15 and an engaging member fixed to the other end of the housing 15 to fasten the clamping member However, it is preferable that the housing 15 is bent by the bolts 18 to vary the diameter of the housing 15.

In addition, the outer surface of the housing 15 is further provided with a heat transfer means (not shown) for supplying electricity to a heat ray (not shown) installed in the heat ray passing hole 13 so as to generate heat.

On the other hand, in the bending structure of the housing 15 using the bolt 18, the vibration of the mechanical device and the temperature rise due to the heating act in combination, so that tightening of the bolt 18 can be loosened.

In this case, it is possible to assemble the nut to the threaded portion. However, if the threaded portion is short, the nut can not be used and the nut may be lost during disassembly and reassembly of the ceramic assembly.

The fastening means of the present invention includes the modified bolt member 100 shown in FIG. 4, thereby solving the above-mentioned problems.

The bolt member 100 includes a threaded portion 101 and a head portion 102. The threaded portion 101 is screwed through the bolt coupling portions 17a and 17b,

The bolt member (100) has a hollow portion (103) penetrating along the longitudinal direction,

A pressing part 111 formed at one end of the hollow part 103 so as to be pulled out from the hollow part 103 through the hollow part 103 and a pressing part 111 hinged at the other end part and elastically supported to be folded in one direction A shim member 110 having wing portions 112,

A coil which is provided in the hollow portion 103 and urges the core member 110 in one direction so as to force the wing portion 112 to be engaged with the bolt engaging portion 17b of the housing 15 And a spring (104).

The wing portion 112 is a kind of latch type member which can be rotated only in one direction and a wing portion 112 is provided on a hinge portion 112a connecting one end of the wing portion 112 and the other end portion of the core member 110, An elastic body (not shown) is provided to apply pressure so as to be folded to the outer circumferential surface of the core member 110. [

Since the wing portion 112 is forced to fold in the direction of the core member 110 by the elastic body,

The bolt member 100 is inserted into the bolt coupling portions 17a and 17b in a state in which the wing portion 112 is folded so that the core member 110 is pulled out in the other direction of the hollow portion 103 by using the pressing portion 111, When the wing portion 112 is opened and then the pressing portion 111 is released from the pressure,

The expanded wing portion 112 is pressed against the bolt coupling portion 17b while the core member 110 is pulled in one direction of the hollow portion 103 by the coil spring 104. [

In this state, since the outflow of the core member 110 is restricted by the wing portion 112, even if the bolt member 100 is subjected to rotational pressure in the unwinding direction by vibration or the like, The member 100 is prevented from loosening.

In other words, the wing portion 112 functions like a nut.

When the housing 15 needs to be separated, the pushing portion 111 is pressed to pull the core member 110 in one direction of the hollow portion 103 so that the wing portion 112 is folded again, When the bolt member 100 is loosened in this state, the bolt member 100 is unlocked by releasing the urging force of the screw member 111, It is possible to separate the bolt member 100 from the bolts 17a and 17b.

At this time, between the hollow portion 103 and the outer circumferential surface of the core member 110, a latching structure using a step, an engagement groove, or a polygonal shape is provided so that the bolt member 100 and the core member 110 do not rotate together , So that the core member (110) is linearly moved back and forth without rotating at the hollow portion (103).

In the above description, the ceramic heater is used as an object to be mounted on a cylinder such as an injection machine or an extruder. However, this is not limitative of the present invention. For example, In the industrial sector, the prefabricated ceramic heaters according to the present invention can be utilized for heat treatment of material, fiber and dyeing process, heat treatment / drying of paper and printing, drying / fermenting of food materials / medicines, food cooking and environmental waste (food, sludge) There will be.

Although the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention is applicable to various modifications, changes, and substitutions made by those skilled in the art, Should be interpreted as falling within the scope of protection of the present invention.

10: Prefabricated ceramic heater 11: Ceramic assembly
12: ceramic powder 12a: water-
12b: female coupling portion 13: heat conduction hole
14: heat transfer part 15: housing
15a: concavo-convex structure 15b:
17a, 17b: bolt connecting portion 19: insertion groove
19a: Step jaw 20: Insulating plate
21: Adhesive S: Fastening means
100: bolt member 101:
102: head part 103: hollow part
104: coil spring 110:
111: pressing portion 112: wing portion
112a:

Claims

A ceramic heater for cylinder heating, comprising a plurality of ceramic powders embedded in a heat pipe,
A ceramic powder having an insertion groove formed on an outer surface thereof; And
And an insulating plate coupled to the insertion groove,
Wherein the ceramic powder includes both side step portions protruding inward from an upper end of an inner wall of the insertion groove,
The heat insulating plate is inserted into the insertion groove and is engaged by the step portion,
And an adhesive agent applied to an opening formed between the two side step portions to fix the heat insulating plate.

The method according to claim 1,
Wherein the ceramic powder has a male engaging portion on one side and a female engaging portion on the other side so that the same ceramic powder is continuously and homogeneously coupled.

The method according to claim 1,
Wherein the ceramic powder has male or female joints on both sides thereof and the ceramic powder having the male and the female joints cross each other and are male and female.

4. The method according to any one of claims 1 to 3,
Further comprising a housing coupled to the ceramic powder so as to tighten and fix the assembled ceramic powder, and having a fastening means on both outer ends of the ceramic powder.