CN117128785A - Tube-in-tube fin type heat exchange device - Google Patents
Tube-in-tube fin type heat exchange device Download PDFInfo
- Publication number
- CN117128785A CN117128785A CN202011101337.3A CN202011101337A CN117128785A CN 117128785 A CN117128785 A CN 117128785A CN 202011101337 A CN202011101337 A CN 202011101337A CN 117128785 A CN117128785 A CN 117128785A
- Authority
- CN
- China
- Prior art keywords
- box body
- heat exchanger
- plate
- plates
- combustion chamber
- Prior art date
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 30
- 238000009413 insulation Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/26—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element
- F28F1/28—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element the element being built-up from finned sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The tube-type fin heat exchange device comprises a heat exchanger and a combustion chamber, wherein the heat exchanger is arranged at the top part of the combustion chamber; the special feature is that: the heat exchanger comprises a heat exchanger, a left header, a right header, a plurality of straight tubes and heat absorption fins, wherein the straight tubes and the heat absorption fins are fixed through end plates to form the heat exchanger; the left and right headers comprise guide plates, end plates and water inlet and outlet connectors, and the guide plates are connected with the water inlet and outlet connectors through the end plates to form sealed left and right headers; the combustion chamber comprises a front box body, a rear box body, a left box body and a right box body; the front box body and the rear box body comprise a front box outer plate, a rear box outer plate, a temperature equalizing plate, a heat insulating plate and a front box inner plate and a rear box inner plate; the left and right cases include left and right case outer plates, left and right case inner plates, and receiving plates 223; the front box body, the rear box body, the left box body and the right box body are assembled and fixed according to corresponding functional positions to form a combustion chamber, and the combustion chamber and the heat exchanger are assembled and fixed according to corresponding functional positions to form a tube-array fin type heat exchange device, namely a tube-array fin type heat exchange device.
Description
Technical Field
The invention relates to a heat exchange device for a household gas water heater, in particular to a tube-array fin type heat exchange device.
Background
At present, a heat exchange device for a household gas water heater comprises a tubular heat exchanger, a coil pipe and a combustion chamber, wherein the combustion chamber is a rectangular cylinder body, the heat exchanger is arranged at the top end inside the combustion chamber, and the coil pipe is surrounded outside the rectangular cylinder body of the combustion chamber. The presence questions are: high manufacturing cost, low mechanical strength, poor corrosion resistance, blockage of scale, abrupt reduction of efficiency caused by scale, environmental pollution and the like.
Disclosure of Invention
The purpose of the invention is that: the shell and tube fin type heat exchange device has the characteristics of low manufacturing cost, high mechanical strength, strong corrosion resistance, high heat exchange efficiency, no process pollution, energy conservation, environmental protection and the like.
The invention is realized in the following way: the tube-type fin heat exchange device comprises a heat exchanger and a combustion chamber, wherein the heat exchanger is arranged at the top part of the combustion chamber; the special feature is that: the heat exchanger comprises a heat exchanger and left and right headers; after a plurality of heat absorption fins are assembled in parallel in a matrix array by a plurality of straight pipes in an equidistant penetrating way, two ends of the heat absorption fins are fixed through end plates to form a heat exchanger; the in-line pipe is made of a metal pipe; the heat absorption fin is formed by stamping a metal sheet, and is provided with a plurality of flanging-shaped turbulence holes and in-line flanging-shaped perforations which are uniformly distributed in a matrix; the end plate is formed by a metal sheet through a stamping process, a plurality of in-line flanging perforation which are uniformly distributed in matrix are arranged on the end plate, the left and right headers comprise guide plates, end plates and water inlet and outlet connectors, the guide plates are made of metal through casting, waist-shaped guide holes and water inlet and outlet holes are respectively arranged on the guide plates, the end plates are formed by stamping the metal sheet, water inlet and outlet connecting holes are arranged on the end plates, and the guide plates are connected with the water inlet and outlet connectors through the end plates to form a sealed left and right header; the combustion chamber comprises a front box body, a rear box body, a left box body and a right box body; the front box body and the rear box body comprise a front box outer plate, a rear box outer plate, a temperature equalizing plate, a heat insulating plate and a front box inner plate and a rear box inner plate; the front and rear box outer plates are made by stamping metal sheets and are provided with rectangular temperature equalizing cavities protruding from inside to outside; the heat absorption material of the temperature equalization plate and the heat insulation plate are made of heat insulation materials; the front and rear box inner plate metal sheets are stamped and manufactured, rectangular heat insulation cavities recessed from outside to inside are formed in the front and rear box inner plates, and semicircular tubular reinforcements protruding from outside to inside are uniformly distributed on the inner walls of the heat insulation cavities and the inner plate walls of the front and rear box inner plates along the horizontal direction; the left box body and the right box body comprise a left box outer plate, a left box inner plate, a right box inner plate and a bearing plate; the left and right outer plates are made of metal sheets by stamping, and semicircular tubular reinforcements protruding from inside to outside are uniformly distributed in the horizontal direction; the left box inner plate and the right box inner plate are made of metal sheets by stamping, the left box inner plate and the right box inner plate are provided with rectangular heat insulation cavities which are sunken from outside to inside, and semicircular tubular reinforcements which are uniformly distributed and protruded from inside to outside are arranged on the inner walls of the heat insulation cavities along the horizontal direction; the bearing plate is made of a metal sheet in a stamping mode; the front box body, the rear box body, the left box body and the right box body are assembled and fixed according to corresponding functional positions to form a combustion chamber, and the combustion chamber and the heat exchanger are assembled and fixed according to corresponding functional positions to form the tubular fin type heat exchange device.
The invention discloses a tube-array fin type heat exchange device, which adopts the structure to realize the purposes of low cost, high mechanical strength, strong corrosion resistance, complete elimination of scale, high heat exchange efficiency, no environmental pollution, energy conservation and consumption reduction of a household gas water heater.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded perspective view of the present invention.
Fig. 3 is a perspective view of the heat exchanger of the present invention.
Fig. 4 is an exploded perspective view of the heat exchanger of the present invention.
Fig. 5 is a perspective view of a heat exchanger of the present invention.
Fig. 6 is an exploded perspective view of the heat exchanger of the present invention.
Fig. 7 is a perspective view of an in-line tube of the present invention.
Fig. 8 is an exploded perspective view of the heat absorbing fin of the present invention.
Fig. 9 is a perspective view of an end plate of the present invention.
Fig. 10 is a perspective view of the left and right headers of the present invention.
Fig. 11 is an exploded perspective view of the left and right headers of the present invention.
Fig. 12 is an exploded perspective view of the guide plate of the present invention.
Fig. 13 is a perspective view of an end plate of the present invention.
Fig. 14 is a perspective view of a combustion chamber of the present invention.
Fig. 15 is an exploded perspective view of the combustion chamber of the present invention.
Fig. 16 is a perspective view of the front and rear cases.
Fig. 17 is an exploded perspective view of the front and rear cases of the present invention.
Fig. 18 is a perspective view of the front and rear box outer panels of the present invention.
Fig. 19 is a perspective view of the front and rear inner panels of the present invention.
Fig. 20 is a perspective view of the left and right cases of the present invention.
Fig. 21 is an exploded perspective view of the left and right cases of the present invention.
Fig. 22 is a perspective view of the left and right box outer panels of the present invention.
Fig. 23 is a perspective view of the left and right tank inner plates of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The tube-fin type heat exchange device comprises a heat exchanger 1 and a combustion chamber 2, wherein the heat exchanger 1 is arranged at the top part in the combustion chamber 2, as shown in fig. 1 and 2; the special feature is that: the heat exchanger 1 includes a heat exchanger 11 and left and right headers 12, as shown in fig. 3; after a plurality of heat absorption fins 112 are assembled by parallel matrix rows of a plurality of straight tubes 111 in an equidistant penetrating way, two ends of the heat absorption fins are fixed through end plates 113 to form a heat exchanger, as shown in fig. 4, 5 and 6; the in-line pipe 111 is made of metal as shown in fig. 7; the heat absorbing fin 112 is formed by stamping a metal sheet, and a plurality of flanging-shaped turbulence holes 1211 and flanging-shaped perforations 1212 of the in-line replacement 111 which are uniformly distributed in a matrix are arranged on the heat absorbing fin 112, as shown in fig. 8; the end plate 113 is formed by stamping a metal sheet, a plurality of in-line 111 flanging perforations 1131 which are uniformly distributed in matrix are arranged on the end plate 113, as shown in fig. 9, the left header 12 and the right header 12 comprise guide plates 121, end plates 122 and water inlet and outlet connectors 123, as shown in fig. 10 and 11, the guide plates 121 are made of metal in a casting mode, kidney-shaped guide holes 1211 and water inlet and outlet holes 1212 are respectively arranged on the guide plates 121, as shown in fig. 12, the end plates 122 are made of the metal sheet in a stamping mode, water inlet and outlet connecting holes 1221 are arranged on the end plates 122, and as shown in fig. 13, the guide plates 121 are connected with the water inlet and outlet connectors 123 through the end plates 122 to form a sealed left header 12 and a sealed right header; the combustion chamber 2 includes a front-rear case 21 and a left-right case 22 as shown in fig. 14 and 15; the front and rear case 21 includes a front and rear case outer plate 211, a temperature equalizing plate 212, a heat insulating plate 213, and front and rear case inner plates 214, as shown in fig. 16 and 17; the front and rear outer plates 211 are made of sheet metal in a punching mode, and the front and rear outer plates 211 are provided with rectangular temperature equalizing cavities 2111 protruding from inside to outside as shown in fig. 18; the heat absorbing material of the temperature equalizing plate 212 and the heat insulating plate 213 are made of heat insulating materials; the front and rear inner plates 214 are made by stamping a metal sheet, rectangular heat insulation cavities 2141 which are recessed from outside to inside are arranged on the front and rear inner plates 214, semicircular tubular reinforcements 2142 which are uniformly distributed along the horizontal direction and protrude from outside to inside are arranged on the inner walls of the heat insulation cavities 2141 and the plate walls of the front and rear inner plates 214, as shown in fig. 19; the left and right cases 22 include left and right case outer plates 221, left and right case inner plates 222, and receiving plates 223, as shown in fig. 20 and 21; the left and right outer box plates 221 are made of metal sheets by punching, and semicircular tubular reinforcements 2211 protruding from inside to outside are uniformly distributed in the horizontal direction on the left and right outer box plates 221, as shown in fig. 22; the left and right inner box plates 222 are made of metal sheets by punching, the left and right inner box plates 222 are provided with rectangular heat insulation cavities 2221 which are recessed from outside to inside, and semicircular tubular reinforcements 2222 which are uniformly distributed along the horizontal direction and protrude from inside to outside are arranged on the inner walls of the heat insulation cavities 2221, as shown in fig. 23; the receiving plate 223 is made of sheet metal by stamping; the front box body 21, the rear box body 21, the left box body 22 and the right box body 22 are assembled and fixed according to corresponding functional positions to form a combustion chamber 2, and the combustion chamber 2 and the heat exchanger 1 are assembled and fixed according to corresponding functional positions to form a tube-array fin type heat exchange device.
The tube-in-tube fin type heat exchange device has the advantages that due to the adoption of the unique principle structural design, the defects of abrupt reduction in efficiency, environmental pollution and the like caused by high cost, low mechanical strength, poor corrosion resistance, blockage of scale and scale are avoided, and the safe, efficient, energy-saving and environment-friendly use of the heat exchange device is ensured, so that the tube-in-tube fin type heat exchange device is obviously different from the prior art.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that modifications and variations can be made by those skilled in the art without departing from the principles of the present invention, which is also considered as being within the scope of the present invention.
Claims (5)
1. The tube-type fin heat exchange device comprises a heat exchanger and a combustion chamber, wherein the heat exchanger is arranged at the top part of the combustion chamber; the special feature is that: the heat exchanger comprises a heat exchanger and left and right headers; the front box body, the rear box body, the left box body and the right box body are assembled and fixed according to corresponding functional positions to form a combustion chamber, and the combustion chamber and the heat exchanger are assembled and fixed according to corresponding functional positions to form the tubular fin type heat exchange device.
2. A tube array fin heat exchange device according to claim 1, wherein: the heat exchanger comprises a heat exchanger and left and right headers; a plurality of heat absorption fins are assembled in parallel in a matrix array by a plurality of straight pipes in an equidistant penetrating way and then fixed through an end plate to form a heat exchanger; the in-line pipe is made of a metal pipe; the heat absorption fin is formed by stamping a metal sheet, and is provided with a plurality of flanging-shaped turbulence holes and in-line flanging-shaped perforations which are uniformly distributed in a matrix; the end plate is formed by a metal sheet through a stamping process, a plurality of in-line flanging perforation which are uniformly distributed in matrix are arranged on the end plate, the left and right headers comprise guide plates, end plates and water inlet and outlet connectors, the guide plates are made of metal through casting, waist-shaped guide holes and water inlet and outlet holes are respectively arranged on the guide plates, the end plates are formed by stamping the metal sheet, water inlet and outlet connecting holes are arranged on the end plates, and the guide plates are connected with the water inlet and outlet connectors through the end plates to form a sealed left and right header; and the heat exchanger and the left and right headers are assembled and fixed according to the corresponding functional positions and then brazed to form the sealed pressure-resistant heat exchanger.
3. A tube array fin heat exchange device according to claim 1, wherein: the combustion chamber comprises a left box body, a right box body, a front box body, a rear box body, a left box body, a right box body and a right box body, wherein the front box body, the rear box body, the left box body, the right box body and the right box body are assembled and fixed according to corresponding functional positions to form the combustion chamber.
4. A tube array fin heat exchange apparatus according to claim 3, wherein: the front box body and the rear box body comprise a front box outer plate, a rear box outer plate, a temperature equalizing plate, a heat insulating plate and a front box inner plate and a rear box inner plate; the front and rear box outer plates are made by stamping metal sheets and are provided with rectangular temperature equalizing cavities protruding from inside to outside; the heat absorption material of the temperature equalization plate and the heat insulation plate are made of heat insulation materials; the front and rear box inner plate metal sheets are stamped and manufactured, rectangular heat insulation cavities recessed from outside to inside are formed in the front and rear box inner plates, and semicircular tubular reinforcements protruding from outside to inside are uniformly distributed on the inner walls of the heat insulation cavities and the inner plate walls of the front and rear box inner plates along the horizontal direction; the left box body and the right box body comprise a left box outer plate, a left box inner plate, a right box inner plate and a bearing plate; the left and right outer plates are made of metal sheets by stamping, and semicircular tubular reinforcements protruding from inside to outside are uniformly distributed in the horizontal direction; the left box inner plate and the right box inner plate are made of metal sheets by stamping, the left box inner plate and the right box inner plate are provided with rectangular heat insulation cavities which are sunken from outside to inside, and semicircular tubular reinforcements which are uniformly distributed and protruded from inside to outside are arranged on the inner walls of the heat insulation cavities along the horizontal direction; the bearing plate is made of a metal sheet in a stamping mode; the front box body, the rear box body, the left box body and the right box body are assembled and fixed according to corresponding functional positions to form a combustion chamber.
5. A tube-in-tube finned heat exchanger according to claim 2, 3 and 4 wherein the heat exchanger and the combustion chamber are assembled and fixed in corresponding functional positions to form a tube-in-tube finned heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101337.3A CN117128785A (en) | 2020-10-09 | 2020-10-09 | Tube-in-tube fin type heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101337.3A CN117128785A (en) | 2020-10-09 | 2020-10-09 | Tube-in-tube fin type heat exchange device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117128785A true CN117128785A (en) | 2023-11-28 |
Family
ID=88861423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011101337.3A Pending CN117128785A (en) | 2020-10-09 | 2020-10-09 | Tube-in-tube fin type heat exchange device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117128785A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300135A (en) * | 2004-03-17 | 2005-10-27 | Showa Denko Kk | Header tank for heat exchanger, and heat exchanger using the same |
| US20070131392A1 (en) * | 2005-12-14 | 2007-06-14 | Showa Denko K.K. | Heat exchanger and method of manufacturing outside plate used for header tanks of heat exchanger |
| CN102944061A (en) * | 2012-10-22 | 2013-02-27 | 华中科技大学 | Air heating furnace system for supplying heat to seedling greenhouse |
| CN103411311A (en) * | 2013-07-18 | 2013-11-27 | 芜湖美的厨卫电器制造有限公司 | Heat exchanger of gas water heater and gas water heater |
| CN205482458U (en) * | 2016-02-05 | 2016-08-17 | 浙江广涛卫厨有限公司 | Stainless steel heat exchanger |
| CN106440867A (en) * | 2016-11-23 | 2017-02-22 | 浙江广涛卫厨有限公司 | Stainless steel heat exchanger |
| CN107940737A (en) * | 2017-09-25 | 2018-04-20 | 汤海明 | A kind of dry type non-finned flow-disturbing heat-exchange device |
| CN110108137A (en) * | 2019-05-29 | 2019-08-09 | 梁宝锋 | A kind of heat exchanger and the gas heater with the heat exchanger |
| CN209459221U (en) * | 2018-12-14 | 2019-10-01 | 中山市广行厨房电器有限公司 | A kind of heat exchanger structure |
| CN210292295U (en) * | 2019-04-04 | 2020-04-10 | 阿诗丹顿燃具有限公司 | Combustion heat exchange system of gas instantaneous water heater for supplying hot water |
| CN210718057U (en) * | 2019-06-27 | 2020-06-09 | 华帝股份有限公司 | Stainless steel heat exchanger and gas heater |
| CN111561785A (en) * | 2020-05-22 | 2020-08-21 | 浙江华地电子有限公司 | Novel stainless steel heat exchanger |
-
2020
- 2020-10-09 CN CN202011101337.3A patent/CN117128785A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300135A (en) * | 2004-03-17 | 2005-10-27 | Showa Denko Kk | Header tank for heat exchanger, and heat exchanger using the same |
| US20070131392A1 (en) * | 2005-12-14 | 2007-06-14 | Showa Denko K.K. | Heat exchanger and method of manufacturing outside plate used for header tanks of heat exchanger |
| CN102944061A (en) * | 2012-10-22 | 2013-02-27 | 华中科技大学 | Air heating furnace system for supplying heat to seedling greenhouse |
| CN103411311A (en) * | 2013-07-18 | 2013-11-27 | 芜湖美的厨卫电器制造有限公司 | Heat exchanger of gas water heater and gas water heater |
| CN205482458U (en) * | 2016-02-05 | 2016-08-17 | 浙江广涛卫厨有限公司 | Stainless steel heat exchanger |
| CN106440867A (en) * | 2016-11-23 | 2017-02-22 | 浙江广涛卫厨有限公司 | Stainless steel heat exchanger |
| CN107940737A (en) * | 2017-09-25 | 2018-04-20 | 汤海明 | A kind of dry type non-finned flow-disturbing heat-exchange device |
| CN209459221U (en) * | 2018-12-14 | 2019-10-01 | 中山市广行厨房电器有限公司 | A kind of heat exchanger structure |
| CN210292295U (en) * | 2019-04-04 | 2020-04-10 | 阿诗丹顿燃具有限公司 | Combustion heat exchange system of gas instantaneous water heater for supplying hot water |
| CN110108137A (en) * | 2019-05-29 | 2019-08-09 | 梁宝锋 | A kind of heat exchanger and the gas heater with the heat exchanger |
| CN210718057U (en) * | 2019-06-27 | 2020-06-09 | 华帝股份有限公司 | Stainless steel heat exchanger and gas heater |
| CN111561785A (en) * | 2020-05-22 | 2020-08-21 | 浙江华地电子有限公司 | Novel stainless steel heat exchanger |
Non-Patent Citations (1)
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|---|
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231129 Address after: 528425 Dongfeng Town, Zhongshan City, Guangdong Province, Tong'an Village, No. 1-8, West Tong'an Avenue, First Floor Applicant after: Zhongshan Weifeng Electrical Appliance Co.,Ltd. Address before: No. 1 Tong'an Avenue West Road, Dongfeng Town, Zhongshan City, Guangdong Province, 528425 Applicant before: Huang Qiangchu |
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