CN111901905B - Integrated heating pipe and heating device - Google Patents
Integrated heating pipe and heating device Download PDFInfo
- Publication number
- CN111901905B CN111901905B CN202010773313.6A CN202010773313A CN111901905B CN 111901905 B CN111901905 B CN 111901905B CN 202010773313 A CN202010773313 A CN 202010773313A CN 111901905 B CN111901905 B CN 111901905B
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- heating
- tube body
- terminal
- ceramic
- ceramic tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 103
- 239000000919 ceramic Substances 0.000 claims abstract description 108
- 230000008719 thickening Effects 0.000 claims description 16
- 239000010453 quartz Substances 0.000 abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 19
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 14
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H05B3/02—Details
-
- 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
- H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
Landscapes
- Resistance Heating (AREA)
Abstract
本发明创造公开了一种一体式发热管，并公开了具有一体式发热管的发热设备，其中一体式发热管包括：陶瓷管体，陶瓷管体的内部设有发热腔，陶瓷管体的两端均设有端子连接部，陶瓷管体的端部设有第一安装部；导电端子，其连接于端子连接部上；发热丝，其设于发热腔内，发热丝的两端分别连接导电端子。发热丝穿过陶瓷管体内的发热腔，导电端子连接在陶瓷管体的端子连接部上，组成一体式发热管，一体式发热管通过第一安装部安装在外部的设备上；本技术中的一个陶瓷管体代替了现有发热管中的石英管以及石英管两端的陶瓷座，减少零件的数量，结构简单，同时不需石英管和陶瓷座之间的粘结剂或连接件以免产生粉末，减少食品安全问题。
The invention discloses an integrated heating tube and a heating device with the integrated heating tube, wherein the integrated heating tube comprises: a ceramic tube body, a heating cavity is provided inside the ceramic tube body, terminal connection parts are provided at both ends of the ceramic tube body, and a first mounting part is provided at the end of the ceramic tube body; a conductive terminal is connected to the terminal connection part; a heating wire is provided in the heating cavity, and the two ends of the heating wire are respectively connected to the conductive terminals. The heating wire passes through the heating cavity in the ceramic tube body, and the conductive terminal is connected to the terminal connection part of the ceramic tube body to form an integrated heating tube, which is installed on an external device through the first mounting part; a ceramic tube body in the present technology replaces the quartz tube and the ceramic seats at both ends of the quartz tube in the existing heating tube, reduces the number of parts, and has a simple structure. At the same time, no adhesive or connector is required between the quartz tube and the ceramic seat to avoid generating powder, thereby reducing food safety issues.
Description
Technical Field
The invention relates to the technical field of heating pipes, in particular to an integrated heating pipe and heating equipment.
Background
The heating tube is the main heating element in the heating device. The structure of the existing heating tube mainly comprises a quartz tube and ceramic seats, wherein the ceramic seats are sleeved at two ends of the quartz tube and used for being installed with external equipment, and heating wires penetrate through the quartz tube and are used for heating. The quartz tube and the ceramic seat are usually coated with an adhesive or a connecting piece is arranged between the quartz tube and the ceramic seat, the adhesive and the connecting piece are used for enabling the quartz tube and the ceramic seat to be difficult to separate after being connected, but the temperature of the connecting position of the quartz tube and the ceramic seat is high, the adhesive or the connecting piece is easy to become powder after being subjected to high temperature for a long time, and the powder can float on objects to be heated, such as food, tableware and the like, so that the food safety problem is caused.
Summary of the invention
The invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an integrated heating tube.
The invention also provides heating equipment with the integrated heating tube.
An integral heating tube according to an embodiment of a first aspect of the present invention includes:
the ceramic tube body is internally provided with a heating cavity, the heating cavity extends along the length direction of the ceramic tube body, both ends of the ceramic tube body are provided with terminal connecting parts, and the end part of the ceramic tube body is provided with a first mounting part;
A conductive terminal connected to the terminal connection portion;
the heating wire is arranged in the heating cavity, and two ends of the heating wire are respectively connected with the conductive terminals.
The integrated heating tube has the advantages that the heating wire penetrates through the heating cavity in the ceramic tube body, the conductive terminal is connected to the terminal connecting part of the ceramic tube body to form the integrated heating tube, the integrated heating tube is installed on external equipment through the first installation part, one ceramic tube body in the technology replaces a quartz tube and ceramic seats at two ends of the quartz tube in the existing heating tube, the number of parts is reduced, the structure is simple, meanwhile, an adhesive or a connecting piece between the quartz tube and the ceramic seats is not needed to avoid powder generation, and the food safety problem is reduced.
According to some embodiments of the invention, the ceramic tube body is provided with a terminal mounting hole, the terminal connecting part comprises the terminal mounting hole, the conductive terminal comprises a first terminal piece, the first terminal piece is abutted against the inner wall of the heating cavity where the terminal mounting hole is located, one end of the first terminal piece is arranged on the outer side of the heating cavity, the other end of the first terminal piece is connected with the heating wire, the first terminal piece is provided with a second terminal piece, the second terminal piece is inserted into the terminal mounting hole, one end, far away from the first terminal piece, of the second terminal piece is bent to form a third terminal piece, and the third terminal piece is abutted against the outer wall of the ceramic tube body.
The second terminal piece is inserted into the terminal mounting hole, the first terminal piece is abutted on the inner wall of the heating cavity, and then the third terminal piece is bent to be abutted on the outer wall of the heating cavity, so that the first terminal piece and the third terminal piece clamp the ceramic tube body, and the mounting and fixing of the conductive terminal and the ceramic tube body are realized, and the structure is simple.
According to some embodiments of the invention, the end of the ceramic tube body is provided with a mounting step, and the first mounting part comprises the mounting step. The mounting step is used for positioning and connecting with external equipment, the external equipment is provided with a mounting hole, and the mounting step is inserted in the mounting hole for positioning and is simple to install.
According to some embodiments of the invention, the mounting steps are arranged at two ends of the ceramic tube body. The both ends of ceramic body all set up the installation step for the both ends of integral type heating tube all are connected with external equipment, and the installation is firm.
According to some embodiments of the invention, the ceramic tube is a square tube.
According to some embodiments of the invention, the ceramic tube is a round tube.
According to some embodiments of the invention, the ceramic tube is a flat tube. The ceramic tube body is flat, so that the heating area of the ceramic tube body can be increased, and the heating uniformity of heated objects can be improved.
According to some embodiments of the invention, the ceramic tube body is provided with a thickening block, and the thickening block extends along the length direction of the ceramic tube body. The thickness of the thickening block is larger, heat radiation passing through can be reduced, the temperature of one side of the thickening block is lower, heat transferred to the external equipment is reduced, heat loss is reduced, and the temperature of the box body of the external equipment is reduced, so that the box body of the external equipment is not scalded.
According to some embodiments of the invention, the inner side of the thickening block is provided with a first cavity, which extends in the length direction of the thickening block. The first cavity is formed in the thickened block, air is arranged in the first cavity, the air is poor in heat conductivity, heat transfer can be further blocked, and heat loss is reduced.
A heat generating apparatus according to a second aspect of an embodiment of the present invention, including the integrated heat generating tube according to the first aspect of the present invention, is provided with a second mounting portion that is disposed in matching relation with the first mounting portion.
The heating equipment provided by the invention has the advantages that the integral heating pipe is adopted, so that the installation of the heating pipe can be simplified, the assembly efficiency is improved, and the potential safety hazards of food can be reduced.
The invention is used for heating pipes.
Drawings
The foregoing and/or additional aspects and advantages of the invention will be apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. It is evident that the drawings described are only some embodiments of the invention and not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without the inventive effort.
FIG. 1 is a schematic perspective view of an integrated heating tube according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an integrated heat generating tube according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a schematic view of a ceramic pipe body of an embodiment of the present invention;
FIG. 5 is a schematic view of another external shape of a square tube as a ceramic tube according to an embodiment of the present invention;
FIG. 6 is a schematic view of a ceramic tube body according to an embodiment of the present invention;
FIG. 7 is a schematic view of another external shape of a ceramic tube body according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a ceramic tube with a thickening block according to an embodiment of the present invention;
FIG. 9 is a schematic view of a ceramic tube with a thickening block and a first cavity according to an embodiment of the present invention;
FIG. 10 is a schematic view of a ceramic tube body with a flat shape according to an embodiment of the present invention.
In the drawing, a 101-ceramic tube body, a 102-heating cavity, a 103-terminal mounting hole, a 104-mounting step, a 105-groove, a 106-thickening block, a 107-first cavity, a 201-conductive terminal, a 202-first terminal plate, a 203-second terminal plate, a 204-third terminal plate and a 301-heating wire are arranged.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the invention, unless explicitly defined otherwise, terms such as provided, connected, etc. should be construed broadly and the specific meaning of the terms in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
An integrated heating tube according to an embodiment of the invention which creates the first aspect will be described below with reference to fig. 1 to 10.
The integrated heating tube comprises a ceramic tube body 101, a conductive terminal 201 and a heating wire 301.
The inside of ceramic body 101 is equipped with the chamber that generates heat 102, and the chamber that generates heat 102 extends along the length direction of ceramic body 101, and the both ends of ceramic body 101 all are equipped with terminal connecting portion, and the tip of ceramic body 101 is equipped with first installation department.
Specifically, the ceramic tube body 101 is integrally formed by high-temperature resistant ceramic materials, and the ceramic tube body 101 is used as a structural main body of the integrated heating tube to replace the combined structure of a quartz tube and ceramic seats at two ends of the quartz tube in the existing heating tube. The high-temperature resistant ceramic material can be alumina ceramic, silicon nitride ceramic, boron carbide ceramic or boron nitride ceramic, etc., and has good high-temperature resistance, can bear the working temperature of the heating tube, and the skilled in the art can select proper materials according to actual use and molding conditions.
The conductive terminals 201 are connected to the terminal connection portions, and the conductive terminals 201 are provided at both ends of the ceramic tube 101.
The heating wire 301 is disposed in the heating cavity 102, and two ends of the heating wire 301 are respectively connected to the conductive terminals 201. When the conductive terminal 201 is connected to an external power source, the heating wire 301 is energized to generate heat.
The heating wire 301 passes through the heating cavity 102 in the ceramic tube body 101, the conductive terminal 201 is connected to the terminal connection part of the ceramic tube body 101 to form an integrated heating tube, the integrated heating tube is installed on external equipment through the first installation part, one ceramic tube body 101 in the technology replaces a quartz tube and ceramic seats at two ends of the quartz tube in the existing heating tube, the number of parts is reduced, the structure is simple, the installation steps of the quartz tube and the ceramic seats are omitted, and meanwhile, an adhesive or a connecting piece between the quartz tube and the ceramic seats is not needed to avoid generating powder, so that the food safety problem is reduced. After the ceramic tube body 101 is used, the volume of the heating cavity 102 can be increased, the heating space of the heating wire 301 is increased, and the service life of the heating wire 301 is prolonged.
In some embodiments of the present invention, a terminal mounting hole 103 is provided on the ceramic tube 101, the terminal connection portion includes the terminal mounting hole 103, the conductive terminal 201 includes a first terminal piece 202, the first terminal piece 202 abuts against an inner wall of the heating cavity 102 where the terminal mounting hole 103 is located, one end of the first terminal piece 202 is provided at an outer side of the heating cavity 102, the other end of the first terminal piece 202 is connected with the heating wire 301, a second terminal piece 203 is provided on the first terminal piece 202, the second terminal piece 203 is inserted into the terminal mounting hole 103, a third terminal piece 204 is bent at an end of the second terminal piece 203 away from the first terminal piece 202, and the third terminal piece 204 abuts against an outer wall of the ceramic tube 101.
Specifically, the conductive terminal 201 is integrally formed, the conductive terminal 201 is made of metal materials such as aluminum or stainless steel, the first terminal piece 202 is taken as a main body, the second terminal piece 203 is located in the middle of the first terminal piece 202, the second terminal piece 203 is punched in the first terminal piece 202 through punching, the second terminal piece 203 is bent before or during installation and inserted into the terminal installation hole 103, the second terminal piece 203 is tensioned to enable the first terminal piece 202 to be abutted against the inner wall of the heating cavity 102, then the third terminal piece 204 is bent at the end portion of the second terminal piece 203 and pressed on the outer wall of the ceramic tube body 101, and therefore the first terminal piece 202 and the third terminal piece 204 clamp the ceramic tube body 101, installation and fixation of the conductive terminal 201 and the ceramic tube body 101 are achieved, and installation is simple. The end of the first terminal piece 202, which is located near the outside of the ceramic tube 101, is located at the outside of the ceramic tube 101 and is connected to an external electric wire. The end of the first terminal plate 202 near the inner side of the ceramic tube body 101 is connected with a heating wire 301, and the part connected with the heating wire 301 can be bent to be near the middle part of the heating cavity 102, so that the heating wire 301 is positioned in the middle part of the heating cavity 102.
The connection structure of the conductive terminal 201 may also be screw connection, or a socket hole is provided at the end of the ceramic tube 101, and the conductive terminal 201 is tightly connected in the socket hole, which can be changed by those skilled in the art according to the actual installation requirement of the external device.
In some embodiments of the invention, the end of the ceramic tube 101 is provided with a mounting step 104, the first mounting portion comprising the mounting step 104. The mounting step 104 is used for positioning and connecting with external equipment, a mounting hole is formed in the external equipment, and the mounting step 104 is inserted into the mounting hole for positioning, so that the mounting is simple. The mounting steps 104 may be provided at both ends or one end of the ceramic tube body 101. The first mounting portion may be further provided as a screw hole connected with an external device through a screw.
In some embodiments of the invention, the ceramic tube 101 is a square tube, including a rectangular tube or square tube. The ceramic tube 101 may be a circular tube, other polygonal tubes, etc., and those skilled in the art may set the ceramic tube according to the installation requirement or the profile requirement.
Specifically, referring to fig. 4, in one of the structures of the ceramic tube body 101, the ceramic tube body 101 is a square tube, both ends of the ceramic tube body 101 are provided with inward concave mounting steps 104, the entire mounting steps 104 are located inside the ceramic tube body 101, the mounting steps 104 are also square, and the terminal mounting holes 103 are provided on the mounting steps 104. Referring to fig. 5, the ceramic pipe 101 is another square pipe structure, one half of the first mounting portion is a mounting step 104, the cross section of the mounting step 104 is a semicircular arc, and the other half of the first mounting portion is identical to the cross section of the ceramic pipe 101.
Referring to fig. 6, the ceramic tube 101 is shown as a circular tube having circular tube-shaped mounting steps 104 at both ends. Referring to fig. 7, the ceramic tube 101 is shown as another structure of a circular tube, the first mounting portion of the ceramic tube 101 is shown as a groove 105, the groove 105 is provided on the ceramic tube 101, and an external device can position the ceramic tube 101 by providing a plug or the like through the groove 105.
In some embodiments of the invention, referring to fig. 10, the ceramic tube 101 is a flat tube. The ceramic tube body 101 is flat, has larger width, can increase the heating area of the ceramic tube body 101, improves the heating uniformity of heated articles, and ensures that the food is heated and baked more uniformly for baking food.
In some embodiments of the invention, referring to fig. 8 to 10, the ceramic tube 101 is provided with a thickening block 106, and the thickening block 106 extends along the length direction of the ceramic tube 101. The thickness of the thickening block 106 is larger, heat radiation passing through can be reduced, the temperature of one side of the thickening block 106 is lower, heat transferred to the external equipment is reduced, heat loss is reduced, energy is saved, and the temperature of the box body of the external equipment is reduced, so that the box body of the external equipment is not scalded.
Further, a first cavity 107 is provided inside the thickened block 106, the first cavity 107 extending in the length direction of the thickened block 106. The first cavity 107 is arranged in the thickened block 106, air is arranged in the first cavity 107, the air has poor heat conductivity, heat transfer can be further blocked, and heat loss is reduced.
The heat generating device according to the second aspect of the embodiment of the present invention comprises the integrated heat generating tube according to the first aspect of the embodiment of the present invention, and the heat generating device is provided with the second mounting part, and the second mounting part is matched with the first mounting part.
According to the heating equipment provided by the invention, the integral heating pipe is adopted, so that the installation of the heating pipe can be simplified, the assembly efficiency is improved, and the potential safety hazards of food can be reduced. The heat generating devices usable with the present integral heat generating tube include, but are not limited to, a sterilizer, warmer, oven, microwave oven, or the like.
While the embodiments of the present application have been described in detail with reference to the drawings, the present application is not limited to the above embodiments, and various equivalent modifications and substitutions can be made therein by those skilled in the art without departing from the spirit of the present application, and the present application is defined by the appended claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773313.6A CN111901905B (en) | 2020-08-04 | 2020-08-04 | Integrated heating pipe and heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773313.6A CN111901905B (en) | 2020-08-04 | 2020-08-04 | Integrated heating pipe and heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111901905A CN111901905A (en) | 2020-11-06 |
| CN111901905B true CN111901905B (en) | 2025-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010773313.6A Active CN111901905B (en) | 2020-08-04 | 2020-08-04 | Integrated heating pipe and heating device |
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| CN (1) | CN111901905B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473653B (en) * | 2021-06-04 | 2024-01-09 | 佛山市龙之声电热科技股份有限公司 | Method for designing radiation hole of heat radiation member and heat radiation member |
| CN114812180A (en) * | 2022-03-08 | 2022-07-29 | 合肥费舍罗热工装备有限公司 | A SOFC solid-state fuel cell debinding and sintering integrated furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211128246U (en) * | 2019-11-28 | 2020-07-28 | 佛山市龙之声电热科技股份有限公司 | Mounting structure and equipment that generates heat of heating tube |
| CN212381412U (en) * | 2020-08-04 | 2021-01-19 | 佛山市龙之声电热科技股份有限公司 | Integral type heating tube and equipment that generates heat |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100900002B1 (en) * | 2008-08-13 | 2009-05-28 | 최기철 | Ceramic tubular heater |
| CN104703309A (en) * | 2015-02-12 | 2015-06-10 | 颐中（青岛）实业有限公司 | Integrated heating device of electronic cigarette atomizer |
| WO2018209560A1 (en) * | 2017-05-16 | 2018-11-22 | 惠州市吉瑞科技有限公司深圳分公司 | Heating element, atomization core assembly for electronic cigarette, and atomizer for electronic cigarette |
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2020
- 2020-08-04 CN CN202010773313.6A patent/CN111901905B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211128246U (en) * | 2019-11-28 | 2020-07-28 | 佛山市龙之声电热科技股份有限公司 | Mounting structure and equipment that generates heat of heating tube |
| CN212381412U (en) * | 2020-08-04 | 2021-01-19 | 佛山市龙之声电热科技股份有限公司 | Integral type heating tube and equipment that generates heat |
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| CN111901905A (en) | 2020-11-06 |
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