CN108954832A - The fin of gas heater and gas heater with it - Google Patents
The fin of gas heater and gas heater with it Download PDFInfo
- Publication number
- CN108954832A CN108954832A CN201810929302.5A CN201810929302A CN108954832A CN 108954832 A CN108954832 A CN 108954832A CN 201810929302 A CN201810929302 A CN 201810929302A CN 108954832 A CN108954832 A CN 108954832A
- Authority
- CN
- China
- Prior art keywords
- via hole
- fin
- center
- gas heater
- heater according
- 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.)
- Withdrawn
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 24
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 50
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The invention discloses a kind of fin of gas heater and with its gas heater, the fin is equipped with the first via hole, second via hole, third via hole and the 4th via hole, the center of second via hole is lower than the center of first via hole in the vertical direction, the center of the third via hole is lower than the center of second via hole, the center of 4th via hole is lower than the center of the third via hole, second via hole is two, the third via hole is two, 4th via hole is two, in the horizontal direction, the center of two third via holes is located at the two sides of first via hole, the center of two second via holes is located at the outside at the center of two third via holes, the center of two the 4th via holes is located at the outside at the center of two second via holes.The fin of gas heater according to an embodiment of the present invention has many advantages, such as the manufacturing convenient for gas heater, convenient for raising gas heater reliability.
Description
Technical field
The present invention relates to water heater manufacturing technology fields, a kind of fin in particular to gas heater and have
The gas heater of the fin of the gas heater.
Background technique
Gas heater in the related technology, fin are equipped with the via hole passed through convenient for water pipe, and fin absorbs in flue gas
Heat, then the water pipe across fin is transferred heat to, the cold water in water pipe is heated, the bending of the bridge piece of water pipe
Radius is smaller, and the production difficulty of bridge piece is larger, and the problems such as fold, cracking easily occurs in bridge piece, influences the work of water heater
Make performance.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of combustion
The fin of gas water heater, the fin of the gas heater have the manufacturing convenient for gas heater, convenient for raising combustion gas heat
The advantages that hydrophone reliability.
The present invention also proposes a kind of gas heater of fin with the gas heater.
To achieve the above object, a kind of fin of gas heater is proposed according to the embodiment of the first aspect of the invention,
The fin is equipped with the first via hole, the second via hole, third via hole and the 4th via hole, in the vertical direction second via hole
Center is lower than the center of first via hole, and the center of the third via hole is lower than the center of second via hole, and the described 4th
The center of via hole is lower than the center of the third via hole, and second via hole is two, and the third via hole is two, and described the
Four via holes are two, and in the horizontal direction, the center of two third via holes is located at the two sides of first via hole, two
The center of a second via hole is located at the outside at the center of two third via holes, in two the 4th via holes
The heart is located at the outside at the center of two second via holes.
The fin of gas heater according to an embodiment of the present invention has the manufacturing convenient for gas heater, is convenient for
The advantages that improving gas heater reliability.
In addition, the fin of gas heater according to the above embodiment of the present invention can also have following additional technology special
Sign:
According to one embodiment of present invention, first via hole is located in the horizontal direction at the center of the fin.
According to one embodiment of present invention, two second via holes, two third via holes and two described
Four via holes are using fin center line in the horizontal direction as axis axial symmetry.
According to one embodiment of present invention, in the horizontal direction, adjacent to adjacent institute at the center of second via hole
It states at the center between third via hole and the 4th via hole.
According to one embodiment of present invention, at the center of the 4th via hole in the nearest third via hole of distance
The distance of the heart is equal to the distance at second via hole center of the centre distance of the 4th via hole recently.
According to one embodiment of present invention, two edges of the fin are respectively equipped with the water conservancy diversion for tilting extension inwardly downward
Flanging.
According to one embodiment of present invention, two edges of the fin, which are equipped with, is vertically oriented and to horizontal direction
The flange of fold, the water conservancy diversion flanging are formed by the lower end fold inward of the flange.
According to one embodiment of present invention, the upper end of the fin is equipped with protrusion protruding upward, the fin
Lower end is equipped with the escape groove being adapted to the lobe shape.
According to one embodiment of present invention, the fin is anaerobic copper fin or stainless steel fin.
Embodiment according to the second aspect of the invention proposes that a kind of gas heater, the gas heater include basis
The fin of gas heater described in the embodiment of the first aspect of the present invention.
Gas heater according to an embodiment of the present invention, it is described according to the embodiment of the first aspect of the invention by utilization
Gas heater fin, there is the manufacturing convenient for gas heater, excellent convenient for improving gas heater reliability etc.
Point.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 2 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 3 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 4 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 5 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 6 is the partial structural diagram of gas heater according to an embodiment of the present invention.
Fig. 7 is the structural schematic diagram of the fin of gas heater according to an embodiment of the present invention.
Fig. 8 is the structural schematic diagram of the fin of gas heater according to an embodiment of the present invention.
Fig. 9 is the structural schematic diagram of the fin of gas heater according to an embodiment of the present invention.
Figure 10 is the structural schematic diagram of the fin of gas heater according to an embodiment of the present invention.
Appended drawing reference: fin 1, the first via hole 101, the second via hole 102, third via hole 103, the 4th via hole 104, water conservancy diversion folding
Side 110, flange 120, protrusion 130, escape groove 140, water inlet coil pipe 2, heat exchanger cavities 3, heat exchange straight tube 4, bridge piece
5, outlet pipe 6.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
The discovery of following facts and problem is made the present invention is based on present inventor: combustion gas in the related technology
Water heater, fin are equipped with the via hole passed through convenient for water pipe, and fin absorbs the heat in flue gas, then transfers heat to across wing
The water pipe of piece heats the cold water in water pipe, and via hole is distributed in horizontal homogeneous, in the horizontal direction the center of adjacent vias
Height it is identical, since the center of adjacent vias on fin is away from smaller, cause the radius bend of the bridge piece of water pipe smaller, even
The production difficulty for connecing bend pipe is larger, and the problems such as fold, cracking easily occurs in bridge piece, influences the working performance of water heater.
Below with reference to the accompanying drawings the fin 1 of gas heater according to an embodiment of the present invention is described.
As shown in Fig. 1-Figure 10, the fin 1 of gas heater according to an embodiment of the present invention is equipped with the first via hole 101, the
Two via holes 102, third via hole 103 and the 4th via hole 104.
Fin 1 is equipped with the first via hole 101, the second via hole 102, third via hole 103 and the 4th via hole 104, in vertical side
The center of upward second via hole 102 is lower than the center of the first via hole 101, and the center of third via hole 103 is lower than the second via hole 102
Center, the center of the 4th via hole 104 are lower than the center of third via hole 103, and the second via hole 102 is two, and third via hole 103 is two
A, the 4th via hole 104 is two, and in the horizontal direction, the center of two third via holes 103 is located at the first via hole 101
Two sides, the center of two the second via holes 102 are located at the outside at the center of two third via holes 103, two the 4th via holes 104
Center be located at two the second via holes 102 center outside.
The fin 1 of gas heater according to an embodiment of the present invention, by setting the first via hole 101, the second via hole 102,
Third via hole 103 and the 4th via hole 104 make the center of two third via holes 103 be located at the two sides of the first via hole 101, and two
The center of a second via hole 102 is located at the outside at the center of two third via holes 103, the center of two the 4th via holes 104
It is located at the outside at the center of two the second via holes 102, the height at the center of the via hole adjacent in the horizontal direction is endless
It is exactly the same, it, can be in order to the first via hole 101, the second via hole 102, third mistake compared to the fin of gas heater in the related technology
Hole 103 and the 4th via hole 104 are arranged in a staggered manner in the vertical direction, are also in the vertical direction across the water pipe of the via hole in this way
It is arranged in a staggered manner, can use water pipe and flue gas is stopped, convenient for increasing the flow resistance of flue gas, be conducive to reducing smoke
Flow velocity balances the flue gas flow in the heat-exchanger rig of the water heater more convenient for increasing the residence time of flue gas, convenient for improving
The heating uniformity of water pipe reduces and produces in the water heater complete machine operational process convenient for improving the heating effect of the water heater
Raw noise improves the comfort of user.
Also, by the first via hole 101 of setting, the second via hole 102, third via hole 103 and the 4th via hole 104, compare phase
Fin in the technology of pass can increase the center between the via hole away from this way in the case where the width dimensions of fin 1 are certain
Convenient for the manufacturing of the water heater, for example, can in order to increase water pipe bridge piece radius bend, be convenient for connecting bending
The processing and manufacturing of pipe prevents bridge piece radius bend too small and leads to bend pipe convenient for simplifying the manufacturing process of bridge piece
The problems such as fold, cracking, occurs for inside, convenient for improving the structural reliability and job stability of bridge piece, thus described in improving
The functional reliability of water heater improves the working performance of the water heater.
Therefore, the fin 1 of gas heater according to an embodiment of the present invention have convenient for gas heater the manufacturing,
The advantages that convenient for improving gas heater reliability.
Below with reference to the accompanying drawings the fin 1 of the gas heater of specific embodiment according to the present invention is described.
In some embodiments of the invention, as shown in Fig. 1-Figure 10, gas and hot water according to an embodiment of the present invention
The fin 1 of device is equipped with the first via hole 101, the second via hole 102, third via hole 103 and the 4th via hole 104.
Specifically, as shown in Figure 7 and Figure 8, the first via hole 101 is located in the horizontal direction at the center of fin 1.So just
It reasonably arranges in via hole described on fin 1, is further arranged in a staggered manner in the vertical direction convenient for the water pipe across the via hole,
Convenient for balancing the process of flue gas more, further convenient for the heating effect of raising water pipe.
More specifically, as shown in Figure 7 and Figure 8, two the second via holes, 102, two third via holes 103 and two the 4th mistakes
Hole 104 is using the center line in the horizontal direction of fin 1 as axis axial symmetry.It is not only convenient for the processing and manufacturing of the via hole in this way,
And being more uniformly stressed for fin 1 can be made, convenient for improving the integrally-built intensity of fin 1 and rigidity, improve the knot of fin 1
Structure reliability.
Optionally, as shown in Figure 7 and Figure 8, in the horizontal direction, adjacent to adjacent third at the center of the second via hole 102
At center between via hole 103 and the 4th via hole 104.It is further arranged in a staggered manner in this way convenient for the via hole, convenient for utilizing second
The flow velocity of water pipe reducing smoke in via hole 102 is further convenient for heating the cold water in water pipe.
Specifically, the distance at the center at the center of the 4th via hole 104 apart from nearest third via hole 103 is equal to the 4th mistake
The distance at nearest 102 center of the second via hole of the centre distance in hole 104.Further it is convenient for the via hole more reasonably cloth in this way
It sets, convenient for improving the positional accuracy of the via hole, is further convenient for the processing and manufacturing of the via hole.
Optionally, as shown in Figure 7 and Figure 8, two edges of fin 1 are respectively equipped with the water conservancy diversion flanging for tilting extension inwardly downward
110 (up and down direction is as shown in the arrow A in Fig. 7 and Fig. 8).High-temperature flue gas can be effectively stopped to flow to the both sides of fin 1 in this way
The phenomenon that edge not only can be effectively reduced the temperature of the water tank two sides of the water heater, prevent dry combustion method water tank side wall, and
And the loss of heat can be reduced, the heat exchange efficiency of fin 1 is improved, the heating effect of the water heater is further increased.
Further, as shown in Figure 7 and Figure 8, two edges of fin 1 are equipped with and are vertically oriented and turn over to horizontal direction
The flange 120 of folding, water conservancy diversion flanging 110 are formed by the lower end fold inward of flange 120.It is not only facilitated in this way by high-temperature flue gas edge
Flange 120 is oriented to via area, further heats convenient for flue gas to the cold water in water pipe, and can be in order to water conservancy diversion flanging
110 processing and manufacturing, convenient for the production and processing of fin 1, is convenient for 1 mass production of fin, just convenient for simplifying the structure of fin 1
In the production cost for reducing fin 1, the production efficiency of fin 1 is improved.
Specifically, as shown in Figure 7 and Figure 8, the upper end of fin 1 is equipped with protrusion 130 protruding upward, the lower end of fin 1
Equipped with the escape groove 140 with 130 shape adaptation of protrusion.It will be appreciated herein that " shape adaptation " is including but not limited to convex
Portion 130 is identical as 140 shape of escape groove out, can be at least part edge shape one of protrusion 130 Yu escape groove 140
It causes, protrusion 130 of the escape groove 140 for another fin 1 below being avoided in punching press fin 1.It in this way can be in production wing
Progressive die punching is realized when piece 1, convenient for the production and processing of fin 1, convenient for improving the production efficiency of fin 1, reduces production fin 1
The excess waste of generation reduces the production cost of fin 1.
Optionally, fin 1 is anaerobic copper fin or stainless steel fin.In this way convenient for the heating conduction for improving fin 1, into one
Step improves the heating properties of the water heater.
Specifically, as shown in figs 1 to 6, the water heater further include: water inlet coil pipe 2, heat exchanger cavities 3, heat exchange are straight
Pipe 4, bridge piece 5 and outlet pipe 6.Water pipe includes heat exchange straight tube 4 and bridge piece 5.Water inlet coil pipe 2 and heat exchanger cavities 3
Interior heat exchange straight tube 4 connects, and water pipe is connect after passing through the fin 1 in heat exchanger cavities 3 with outlet pipe 6, the cold water in water pipe
After the heating of heat exchanger cavities 3, hot water is flowed out by outlet pipe 6.Heat exchange straight tube 4 is placed on upper inside heat exchanger cavities 3
The outer wall of the via hole on fin 1 and cavity 3 is held and passes through, heat exchange straight tube 4 can pass through a certain number of fins 1, such as
1-4 fin can be passed through.Water outlet and the lowermost the heat exchange straight tube 4 of coil pipe 2 of intaking is connected, the water inlet end of outlet pipe 6 and
The heat exchange straight tube 4 of the top is connected, remaining heat exchange straight tube 4 is linked together by bridge piece 5, to constitute the water heater
Entire water passage.
Gas heater according to an embodiment of the present invention is described below.Gas heater according to an embodiment of the present invention includes
The fin 1 of gas heater according to the above embodiment of the present invention.
Gas heater according to an embodiment of the present invention, by utilizing gas heater according to the above embodiment of the present invention
Fin 1, have many advantages, such as convenient for gas heater the manufacturing, convenient for improve gas heater reliability.
Other of gas heater according to an embodiment of the present invention are constituted and are operated for those of ordinary skill in the art
For be all it is known, be not detailed herein.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.In the description of the present invention, fisrt feature exists
Second feature " on " or " under " it may include that the first and second features directly contact, it also may include the first and second features
It is not direct contact but by the other characterisation contact between them.
In the description of the present invention, fisrt feature includes fisrt feature above the second feature " above ", " above " and " above "
Right above second feature and oblique upper, or first feature horizontal height is merely representative of higher than second feature.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of fin of gas heater, which is characterized in that the fin is equipped with the first via hole, the second via hole, third mistake
Hole and the 4th via hole, the center of second via hole is lower than the center of first via hole, the third mistake in the vertical direction
The center in hole is lower than the center of second via hole, and the center of the 4th via hole is lower than the center of the third via hole, described
Second via hole is two, and the third via hole is two, and the 4th via hole is two, in the horizontal direction, two described the
The center of three via holes is located at the two sides of first via hole, and the center of two second via holes is located at described in two
The outside at the center of third via hole, the center of two the 4th via holes are located at the outer of the center of two second via holes
Side.
2. the fin of gas heater according to claim 1, which is characterized in that first via hole is in the horizontal direction
At the center of the fin.
3. the fin of gas heater according to claim 2, which is characterized in that two second via holes, two institutes
Third via hole and two the 4th via holes are stated using fin center line in the horizontal direction as axis axial symmetry.
4. the fin of gas heater according to claim 1, which is characterized in that in the horizontal direction, second mistake
At center at the center in hole between adjacent the third via hole and the 4th via hole.
5. the fin of gas heater according to claim 1, which is characterized in that distance at the center of the 4th via hole
The distance at the center of the nearest third via hole is equal in second via hole of the centre distance of the 4th via hole recently
The distance of the heart.
6. the fin of gas heater according to claim 1, which is characterized in that two edges of the fin are respectively equipped with
The water conservancy diversion flanging of extension is tilted inwardly downward.
7. the fin of gas heater according to claim 6, which is characterized in that two edges of the fin are equipped with along perpendicular
To orientation and to the flange of horizontal direction fold, the water conservancy diversion flanging is formed histogram by the lower end fold inward of the flange.
8. the fin of gas heater according to claim 1, which is characterized in that the upper end of the fin is equipped with upward convex
Protrusion out, the lower end of the fin are equipped with the escape groove being adapted to the lobe shape.
9. the fin of gas heater according to claim 1, which is characterized in that the fin is for anaerobic copper fin or not
Become rusty steel fin.
10. a kind of gas heater, which is characterized in that including gas heater according to claim 1 to 9
Fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929302.5A CN108954832A (en) | 2018-08-15 | 2018-08-15 | The fin of gas heater and gas heater with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929302.5A CN108954832A (en) | 2018-08-15 | 2018-08-15 | The fin of gas heater and gas heater with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108954832A true CN108954832A (en) | 2018-12-07 |
Family
ID=64470245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810929302.5A Withdrawn CN108954832A (en) | 2018-08-15 | 2018-08-15 | The fin of gas heater and gas heater with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108954832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020143842A (en) * | 2019-03-06 | 2020-09-10 | 株式会社パロマ | Heat exchanger and water heater |
-
2018
- 2018-08-15 CN CN201810929302.5A patent/CN108954832A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020143842A (en) * | 2019-03-06 | 2020-09-10 | 株式会社パロマ | Heat exchanger and water heater |
| JP7260147B2 (en) | 2019-03-06 | 2023-04-18 | 株式会社パロマ | heat exchangers and water heaters |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181207 |