CN114666928A - MCH metal ceramic heating pipe - Google Patents
MCH metal ceramic heating pipe Download PDFInfo
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- CN114666928A CN114666928A CN202210476860.7A CN202210476860A CN114666928A CN 114666928 A CN114666928 A CN 114666928A CN 202210476860 A CN202210476860 A CN 202210476860A CN 114666928 A CN114666928 A CN 114666928A
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- mch
- cermet
- heating element
- metal ceramic
- hollow
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 125
- 239000000919 ceramic Substances 0.000 title claims abstract description 79
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000011195 cermet Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 28
- 238000009413 insulation Methods 0.000 claims description 20
- 230000003139 buffering effect Effects 0.000 claims description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PCEXQRKSUSSDFT-UHFFFAOYSA-N [Mn].[Mo] Chemical compound [Mn].[Mo] PCEXQRKSUSSDFT-UHFFFAOYSA-N 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
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- Resistance Heating (AREA)
Abstract
The invention provides an MCH metal ceramic heating pipe, which comprises: the hollow pipeline is a hollow pipe body for liquid to flow through; the metal ceramic heating element is sleeved outside the hollow pipeline; and the heat-insulating pipe sleeve is sleeved outside the metal ceramic heating body to form a heat-insulating layer. When the metal ceramic heating element adopted by the invention is electrified to work, the heat emitted by the metal ceramic heating element is transferred to the hollow pipeline sleeved in the metal ceramic heating element, and then the liquid in the hollow pipeline is heated. Therefore, the liquid in the hollow pipeline and the hollow pipeline sleeved inside the metal ceramic heating body can be heated through the metal ceramic heating body.
Description
Technical Field
The invention relates to the technical field of electric heating, in particular to an MCH metal ceramic heating pipe.
Background
MCH is an abbreviation for Metal Ceramics Heater, meaning a cermet heating element. MCH refers to a ceramic heating element formed by printing metal tungsten or molybdenum-manganese slurry on a ceramic tape-casting blank, hot-pressing and laminating, and then sintering ceramic and metal together under the protection of hydrogen at 1600 ℃, and has the advantages of corrosion resistance, high temperature resistance, long service life, high efficiency, energy conservation, uniform temperature, good heat conduction performance, high thermal compensation speed and the like, does not contain harmful substances such as lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers and the like, and meets the environmental protection requirements of RoHS (RoHS) of the European Union and the like.
In some conventional heating pipes using MCH metal ceramic heating elements, a plurality of metal ceramic heating elements are embedded in a small cavity of a section bar or mounted on a pipe inner support, and the plurality of metal ceramic heating elements and accessories such as the section bar or the support matched with the metal ceramic heating elements are applied, so that the heating pipe is overstaffed in structure and high in cost.
Disclosure of Invention
The invention aims to at least solve the problems of the conventional heating pipe that the structure of the MCH metal ceramic heating pipe is bloated and the cost is too high due to the adoption of a plurality of metal ceramic heating pieces and matched accessories thereof. The purpose is realized by the following technical scheme:
the embodiment of the invention provides an MCH (metal-ceramic) heating pipe, which comprises: the hollow pipeline is a hollow pipe body for liquid to flow through; the metal ceramic heating element is sleeved outside the hollow pipeline; and the heat-insulating pipe sleeve is sleeved outside the metal ceramic heating body.
According to the MCH metal ceramic heating pipe provided by the embodiment of the invention, the metal ceramic heating body is sleeved outside the hollow pipeline, and the heat preservation pipe sleeve is sleeved outside the metal ceramic heating body. When the metal ceramic heating element is electrified to work, the metal ceramic heating element transfers the heat emitted by the metal ceramic heating element to the hollow pipeline and the liquid in the hollow pipeline, so that the liquid in the hollow pipeline is heated. Therefore, the hollow pipeline sleeved in the metal ceramic heating body can be heated through the metal ceramic heating body, and then liquid flowing through the hollow pipeline is heated. Because one metal ceramic heating element replaces a plurality of metal ceramic heating pieces and matched accessories thereof in the prior art, the design of the MCH metal ceramic heating pipe for removing the bulkiness is facilitated, and the manufacturing cost is facilitated to be reduced.
In addition, the MCH cermet heating tube according to the embodiment of the invention may also have the following additional technical features:
in some embodiments of the invention, the upper end of the hollow pipe is provided with a first external thread and the lower end of the hollow pipe is provided with a second external thread.
In some embodiments of the present invention, the hollow pipe is made of a material with high hardness, high temperature resistance, corrosion resistance, and thermal conductivity, which may be, but not limited to, a red copper material, a copper alloy material, a stainless steel material, or a ceramic material, and is subjected to a heat treatment.
In some embodiments of the present invention, the cermet heating element is a hollow tube body with openings at two ends, the inner diameter of the cermet heating element is matched with the outer diameter of the hollow tube, and the outer diameter of the cermet heating element is matched with the inner diameter of the heat preservation tube sleeve.
In some embodiments of the present invention, the cermet heating element includes a first thermal buffering section, a heating section, and a second thermal buffering section integrally connected from top to bottom, and the cermet heating element further includes a first lead and a second lead led out from the second thermal buffering section. The heating section is made of ceramic materials and a heating circuit arranged in the ceramic materials, and actively heats in the using process of the metal ceramic heating body. The first thermal buffer section and the second thermal buffer section are made of ceramic materials, and a heating circuit is not arranged in the first thermal buffer section and the second thermal buffer section, so that the first thermal buffer section and the second thermal buffer section do not actively generate heat in the use process of the metal ceramic heating body. Thus, the cermet heating element has a low temperature region at both ends and a high temperature region at the middle.
In some embodiments of the present invention, a temperature measuring hole is formed in a tube wall of the second thermal buffer section, a thermistor is arranged inside the temperature measuring hole, the thermistor includes a third lead and a fourth lead led out from the thermistor, the thermistor is a positive temperature coefficient thermistor, and the thermistor controls the metal ceramic heating element to be powered on and off based on whether the measured temperature of the second thermal buffer section exceeds a threshold value.
In some embodiments of the present invention, the thermal insulation pipe sleeve is a hollow pipe body with two open ends, and the thermal insulation pipe sleeve may be, but not limited to, a vacuum pipe sleeve, a silver-plated vacuum pipe sleeve, a ceramic fiber cotton pipe sleeve, a glass fiber cotton pipe sleeve, but any thermal insulation pipe sleeve made of other materials or structures with thermal insulation effect may be used.
In some embodiments of the present invention, a first threaded fastener is threadedly connected to the first external thread, a second threaded fastener is threadedly connected to the second external thread, and the first threaded fastener and the second threaded fastener fasten the cermet heating element, the thermal insulation pipe sleeve and the hollow pipe together.
In some embodiments of the present invention, the first threaded fastener and the second threaded fastener are threaded flanges of a non-standard component, and the second threaded fastener is provided with lead holes through which the first lead, the second lead, the third lead and the fourth lead can pass.
In some embodiments of the present invention, the first and second threaded fasteners are made of a hard, high temperature resistant, corrosion resistant material, which may be, but is not limited to, a red copper material, a brass material, a stainless steel material, or a ceramic material, and heat treated.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of an MCH cermet heating tube according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of an MCH cermet heating tube according to an embodiment of the present invention;
FIG. 3 is an exploded view of an MCH cermet heating tube according to an embodiment of the present invention;
FIG. 4 is another perspective exploded view of an MCH cermet heating tube according to an embodiment of the present invention;
the reference symbols in the drawings denote the following:
1: a hollow conduit; 7: a first external thread; 8: a second external thread;
2: a cermet heating element; 9: a first thermal buffer section; 10 heating section; 11: a second thermal buffer section; 12: a first lead; 13 a second lead; 14: a temperature measuring hole;
3: a heat preservation pipe sleeve;
4: a first threaded fastener;
5: a second threaded fastener; 17: a wire hole;
6: a thermistor; 15: a third lead; 16: and a fourth lead.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present application, it is to be noted that technical terms or scientific terms used herein should be given the ordinary meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specified.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In addition, the terms "first" and "second", etc. are used to distinguish different objects, rather than to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
As shown in fig. 1 to fig. 4, an embodiment of the present invention provides an MCH cermet heating tube, which includes a hollow pipe 1, a cermet heating element 2, and a thermal insulation sleeve 3. Specifically, cavity pipeline 1 is the cavity body that can supply the liquid circulation, and cermet heat-generating body 2 cup joints the outside that sets up at cavity pipeline 1, and heat preservation pipe box 3 cup joints the outside that sets up at cermet heat-generating body 2.
According to the MCH metal ceramic heating pipe provided by the embodiment of the invention, the metal ceramic heating body 2 is sleeved outside the hollow pipeline 1, and the heat preservation pipe sleeve 3 is sleeved outside the metal ceramic heating body 2. When the metal ceramic heating element 2 is electrified to work, the metal ceramic heating element 2 transfers the heat emitted by the metal ceramic heating element to the hollow pipeline 1 and the liquid in the hollow pipeline 1, thereby heating the liquid in the hollow pipeline 1. Therefore, the hollow pipeline 1 sleeved in the metal ceramic heating body 2 can be heated through the metal ceramic heating body 2, and then liquid flowing through the hollow pipeline 1 is heated. Because one metal ceramic heating element 2 replaces a plurality of metal ceramic heating pieces and accessories thereof in the prior art, the design of the MCH metal ceramic heating pipe for removing the bulkiness is facilitated, and the manufacturing cost is facilitated to be reduced.
In some embodiments of the invention, the upper end of the hollow conduit 1 is provided with a first external thread 7 and the lower end of the hollow conduit 1 is provided with a second external thread 8.
In some embodiments of the present invention, the hollow pipe 1 is made of a material with high hardness, high temperature resistance, corrosion resistance, and thermal conductivity, which may be, but not limited to, a red copper material, a copper alloy material, a stainless steel material, or a ceramic material, and is subjected to a heat treatment.
In this embodiment, the hollow pipeline 1 is made of red copper material, which has the characteristics of high strength, high temperature resistance, corrosion resistance and good thermal conductivity, but the metal pipe body of the red copper pipe is easy to scale after long-term use, so that a structure for preventing scale or facilitating cleaning needs to be attached when in use, for example, an anti-scale coating is coated on the inner wall of the pipe body.
In other embodiments of the present invention, the hollow pipe 1 is made of a heat-conducting ceramic pipe, which has a neutral surface property, reduces the scale adsorption capacity on the surface, and realizes self-cleaning under the action of high-speed liquid flow, and is made of a ceramic pipe by high-temperature firing, which has a good high-temperature resistance and is not easily damaged at a high-temperature peak value, and has a good heat conductivity.
In some embodiments of the present invention, the cermet heating element 2 is a hollow tube with two open ends, the inner diameter of the cermet heating element 2 is matched with the outer diameter of the hollow tube 1, and the outer diameter of the cermet heating element 2 is matched with the inner diameter of the thermal insulation tube sleeve 3.
In this embodiment, the cermet heating element 2 is a hollow tube with openings at both ends, the inner diameter of the cermet heating element 2 is matched with the outer diameter of the hollow tube 1, and the outer diameter of the cermet heating element 2 is matched with the inner diameter of the heat-insulating tube sleeve 3. Therefore, the metal ceramic heating element 2 can be tightly sleeved on the outer pipe wall of the hollow pipeline 1, and the outer pipe wall of the metal ceramic heating element 2 can be tightly sleeved with the heat preservation pipe sleeve 3. Not only ensures that good heat transfer performance is achieved between the metal ceramic heating body 2 and the hollow pipeline 1, but also a compact structure is obtained.
In some embodiments of the present invention, the cermet heating element 2 includes a first thermal buffer section 10, a heating section 9 and a second thermal buffer section 11 integrally connected from top to bottom, and the cermet heating element 2 further includes a first lead 12 and a second lead 13 led out from the second thermal buffer section 11.
In the present embodiment, the cermet heating element 2 includes a first thermal buffer section 10, a heating section 9, and a second thermal buffer section 11 that are integrally connected. The heating section 9 comprises a heat-conducting ceramic body and a heating circuit arranged in the heat-conducting ceramic body, and when the metal ceramic heating body 2 is electrified and works, the heating section 9 actively heats. The first thermal buffer section 10 comprises a thermal-resistant ceramic body, and a heating circuit is not arranged in the thermal-resistant ceramic body, so that when the metal ceramic heating body 2 is electrified and works, the first thermal buffer section 10 does not actively heat. The second thermal buffer section 11 comprises a thermal-resistant ceramic body and a power supply circuit penetrating through the thermal-resistant ceramic body, the power supply circuit is electrically connected to the heating circuit, and the heating circuit is not arranged in the thermal-resistant ceramic body, so that when the metal ceramic heating body 2 is electrified to work, the second thermal buffer section 11 does not actively heat. In the production process, the heat-conducting ceramic body and the heat-resisting ceramic body are integrally sintered. The heat-resistant ceramic body can be formed by firing a material with a small heat conductivity coefficient and has a heat insulation effect, so that the first heat buffer section 10, the second heat buffer section 11 and the heat insulation pipe sleeve 3 can form a heat insulation layer together, the heat insulation materials at the upper end and the lower end of the metal ceramic heating body 2 are omitted, the number of parts is favorably simplified, and the integral structure is simplified and the manufacturing cost is saved.
In some embodiments of the present invention, a temperature measuring hole 14 is formed in a tube wall of the second thermal buffering section 11 of the cermet heating element 2, a thermistor 6 is arranged inside the temperature measuring hole 14, the thermistor 6 comprises a third lead 15 and a fourth lead 16 led out from the thermistor 6, the thermistor 6 is a PTC positive temperature coefficient thermistor, and the thermistor 6 controls the cermet heating element 2 to be turned on or off based on whether the measured temperature of the second thermal buffering section 11 exceeds a threshold value.
In this embodiment, a temperature measuring hole 14 is formed in a tube wall of the second thermal buffer section 11 of the cermet heating element 2, a thermistor 6 is arranged inside the temperature measuring hole 14, the thermistor 6 is a PTC positive temperature coefficient thermistor, and the thermistor 6 controls the on/off of the cermet heating element 2 based on whether the measured temperature of the second thermal buffer section 11 exceeds a threshold value. Therefore, the cermet heating element 2 can be prevented from being dried.
In some embodiments of the present invention, the thermal insulation pipe sleeve 3 is a hollow pipe body with two open ends, and the thermal insulation pipe sleeve 3 can be, but not limited to, a vacuum pipe sleeve, a silver-plated vacuum pipe sleeve, a ceramic fiber cotton pipe sleeve, a glass fiber cotton pipe sleeve, but the thermal insulation pipe sleeve 3 made of other materials or structures with thermal insulation effect can be used.
In this embodiment, the thermal insulation pipe sleeve 3 is a vacuum pipe sleeve, the vacuum pipe sleeve is formed by a pipe wall made of stainless steel material and a vacuum chamber enclosed by the pipe wall, and a support structure can be further arranged in the vacuum chamber to prevent or reduce deformation of the vacuum chamber. The vacuum cavity can effectively prevent heat from being transferred outwards, and further the heat efficiency is improved.
In other embodiments of the present invention, the thermal insulation pipe sleeve 3 is a silver-plated vacuum pipe sleeve, the silver-plated vacuum pipe sleeve is composed of a pipe wall made of stainless steel material and a vacuum chamber surrounded by the pipe wall, a support structure can be further arranged in the vacuum chamber, and the silver-plated vacuum pipe sleeve is plated with silver on the inner pipe wall contacted with the metal ceramic heating element 2. The silver coating can better prevent heat radiation, further prevent heat from being transferred outwards, and further improve the heat efficiency.
In some embodiments of the present invention, the first external thread 7 is provided with a first threaded fastener 4 in a threaded connection manner, the second external thread 8 is provided with a second threaded fastener 5 in a threaded connection manner, and the first threaded fastener 4 and the second threaded fastener 5 fasten the metal ceramic heating element 2 and the heat preservation pipe sleeve 3 together with the hollow pipeline 1.
In this embodiment, the first threaded fastener 4 and the second threaded fastener 5 are threaded flanges, and the first threaded fastener 4 and the second threaded fastener 5 are respectively screwed on the first external thread 7 and the second external thread 8 at two ends of the hollow pipeline 1, so as to fasten and connect the hollow pipeline 1, the metal ceramic heating element 2 and the heat preservation pipe sleeve 3 into a whole. Therefore, the MCH metal ceramic heating pipe is composed of a small number of parts, and is simple in structure, small in unit power volume and low in cost.
In some embodiments of the present invention, the first threaded fastener 4 and the second threaded fastener 5 are non-standard threaded flanges, and the second threaded fastener 5 is provided with lead holes 17 through which the first lead 12, the second lead 13, the third lead 15 and the fourth lead 156 can pass.
In some embodiments of the present invention, the first and second threaded fasteners 4 and 5 are made of a hard, high temperature resistant, corrosion resistant material, which may be, but is not limited to, a red copper material, a brass material, a stainless steel material, or a ceramic material, and heat treated.
In the embodiment, the first threaded fastener 4 and the second threaded fastener 5 are made of brass material, and have the characteristics of high hardness, high temperature resistance and corrosion resistance.
In other embodiments of the present invention, the first threaded fastener 4 and the second threaded fastener 5 are made of a ceramic material, specifically, an alumina ceramic, which has the characteristics of high hardness, high temperature resistance and corrosion resistance, and the alumina ceramic also has insulation property, so that the application is safer.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and the technical features of the above embodiments can be arbitrarily combined, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An MCH metal ceramic heating pipe is characterized by comprising:
the hollow pipeline is a hollow pipe body for liquid to flow through;
the metal ceramic heating element is sleeved outside the hollow pipeline;
and the heat-insulating pipe sleeve is sleeved outside the metal ceramic heating body.
2. The MCH cermet heating tube according to claim 1, wherein an upper end of the hollow tube is provided with a first external thread and a lower end of the hollow tube is provided with a second external thread.
3. The MCH cermet heating tube according to claims 1 and 2, characterized in that the hollow tube is made of a material with high hardness, high temperature resistance, corrosion resistance and thermal conductivity, which can be but not limited to red copper material, copper alloy material, stainless steel material or ceramic material, and is heat treated.
4. The MCH cermet heating tube according to claim 1, characterized in that the cermet heating element is a hollow tube with openings at both ends, the inside diameter of the cermet heating element is adapted to the outside diameter of the hollow tube, and the outside diameter of the cermet heating element is adapted to the inside diameter of the thermal insulation tube sleeve.
5. The MCH cermet heating tube of claims 1 and 4, wherein the cermet heating element comprises a first thermal buffering section, a heating section, a second thermal buffering section integrally connected from top to bottom, and further comprises a first lead and a second lead led out from the second thermal buffering section.
6. The MCH cermet heating tube according to claim 5, wherein a temperature measuring hole is formed in a tube wall of the second thermal buffering section, a thermistor is arranged inside the temperature measuring hole, the thermistor comprises a third lead and a fourth lead led out from the thermistor, the thermistor is a positive temperature coefficient thermistor, and the thermistor controls the metal ceramic heating element to be powered on or off based on whether the measured temperature of the second thermal buffering section exceeds a threshold value.
7. The MCH cermet heating tube according to claim 1, characterized in that the thermal insulation sleeve is a tube body with two open ends, which can be but not limited to a vacuum sleeve, a silver-plated vacuum sleeve, a ceramic fiber cotton sleeve, a glass fiber cotton sleeve.
8. The MCH cermet heating tube of claim 2 wherein a first threaded fastener is threadedly engaged with the first external thread, a second threaded fastener is threadedly engaged with the second external thread, and the first and second threaded fasteners fasten the cermet heating element, the thermal insulation sleeve and the hollow conduit together.
9. The MCH cermet heating tube of claim 8 wherein the first and second threaded fasteners are non-standard threaded flanges and the second threaded fastener is provided with lead holes through which the first, second, third and fourth leads pass.
10. An MCH cermet heating tube according to claims 8 and 9, characterized in that the first and second threaded fasteners are made of hard, high temperature resistant and corrosion resistant material, which may be, but not limited to, red copper material, brass material, stainless steel material or ceramic material, and are heat treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476860.7A CN114666928A (en) | 2022-05-02 | 2022-05-02 | MCH metal ceramic heating pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476860.7A CN114666928A (en) | 2022-05-02 | 2022-05-02 | MCH metal ceramic heating pipe |
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| CN114666928A true CN114666928A (en) | 2022-06-24 |
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| CN202210476860.7A Pending CN114666928A (en) | 2022-05-02 | 2022-05-02 | MCH metal ceramic heating pipe |
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2022
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| CN201954098U (en) * | 2011-01-14 | 2011-08-31 | 段明新 | Instant electric heating tap with tubular ceramic-metal co-fired heater |
| CN204739760U (en) * | 2015-06-03 | 2015-11-04 | 浙江沁园水处理科技有限公司 | Instant heating type heat -generating body and instant heating type boiler |
| CN212435966U (en) * | 2020-06-30 | 2021-01-29 | 河北旭胜电器有限公司 | Semiconductor heating rod |
| CN112413884A (en) * | 2020-12-04 | 2021-02-26 | 艾锐斯电子(深圳)有限公司 | Liquid heat exchanger in container with metal ceramic heating element |
| CN112503757A (en) * | 2020-12-04 | 2021-03-16 | 艾锐斯电子(深圳)有限公司 | Liquid heat exchange system in container with metal ceramic heating body |
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