CN2281504Y - Heat exchanging core of water heater - Google Patents
Heat exchanging core of water heater Download PDFInfo
- Publication number
- CN2281504Y CN2281504Y CN 96224088 CN96224088U CN2281504Y CN 2281504 Y CN2281504 Y CN 2281504Y CN 96224088 CN96224088 CN 96224088 CN 96224088 U CN96224088 U CN 96224088U CN 2281504 Y CN2281504 Y CN 2281504Y
- Authority
- CN
- China
- Prior art keywords
- collecting sheet
- heat collecting
- heat
- exchanger core
- heat exchanger
- 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.)
- Expired - Fee Related
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- Details Of Fluid Heaters (AREA)
Abstract
The utility model relates to a heat exchanger core of a water heater, which is composed of a heat collection sheet group and a coiled pipe, wherein the heat collection sheet group is composed of at least three heat collection sheets which are arranged in parallel and have identical shape, a through hole is arranged on each of the heat collection sheets, and the coiled pipe is provided with at least three straight pipe sections which are arranged in parallel; the straight pipe sections are penetrated through the through holes on the heat collection sheets, and each two straight pipe sections are connected in series by pipelines. The utility model is characterized in that each of the heat collection sheets forms a bending state in a vertical direction. The heat exchanger core can raise the absorption rate of flame radiation and can enhance convective heat exchange among air stream, and thus, the utility model has the characteristic of high heat efficiency.
Description
The utility model relates to a kind of water heater parts, especially a kind of water heater heat exchanger core.
China utility application 92214849.X discloses a kind of fuel-oil water heater, this water heater is made of burner and heat exchanger two parts, its heat exchanger comprises heat collecting sheet group and dish intestinal tube, each heat collecting sheet in the heat collecting sheet group is set up in parallel, have a plurality of straight lengths in the dish intestinal tube, each straight length passes the through hole that is provided with on the heat collecting sheet group side by side, and each straight length is connected in series by connecting pipeline section.In above-mentioned water heater and commercially available gas heater, each heat collecting sheet that constitutes the heat collecting sheet group is flat.In the water heater use, the radiant heat that is in the flame of midline position between adjacent two heat collecting sheets penetrates direct projection from the gap between two, is discharged from beyond the heat exchanger, becomes invalid heat.Simultaneously, combustion flue gas stream is the laminar motion state when rising, frictional damping is only arranged between air-flow and the heat collecting sheet, can carry out the thermal current that close heat collecting sheet is only arranged of heat exchange with heat collecting sheet well, and the contained heat of the air-flow at all the other positions has only by heat radiation and interlayer crossflow and conducts indirectly to heat collecting sheet between two, this just makes air-flow institute heat content do not gathered by heat collecting sheet well, and the thermal loss of fume emission is increased.
The purpose of this utility model promptly is that the heat collecting sheet structure in the above-mentioned heat exchanger is improved, and a kind of Btu utilization to combustion product gases water heater heat exchanger core preferably is provided.
Water heater of the present utility model is made of heat collecting sheet group and dish intestinal tube with heat exchanger core.The heat collecting sheet group by at least three be set up in parallel, heat collecting sheet that shape is identical constitutes.Each heat collecting sheet is provided with through hole.The dish intestinal tube has at least three straight lengths that are set up in parallel, and this straight length passes the through hole on each heat collecting sheet, is connected in series by pipeline between each straight length.In the utility model, make heat collecting sheet on vertical, be case of bending especially.Allow heat collecting sheet vertical after crooked certain angle, the radiant heat that aforementioned gap between two penetrates the flame of direct projection will directly contact lamellar body at the bend of heat collecting sheet and be partially absorbed, remaining radiant heat is absorbed to another adjacent heat collecting sheet for the second time by the rule reflection that incidence angle equals angle of reflection again, thereby has improved radiation heat transfer rate.Simultaneously, combustion product gases can produce eddy current and partly turbulent at the heat collecting sheet bend, and the laminar flow propradation of air-flow has been upset in the part, helps the heat conduction between heat collecting sheet and the thermal current, has also strengthened the convection current of the hot and cold air between the Neighbor Set backing.
Therefore, heat exchanger core of the present utility model compared with the aforementioned existing similar products can improve the absorptivity of flame spoke and the convective heat exchange between strengthening flow, thereby has the high characteristics of the thermal efficiency.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Fig. 1 is the structural representation (removing the connecting pipe between the straight length) of heat exchanger core among the embodiment.
Fig. 2 is the structural representation of heat collecting sheet.
Fig. 3 is the A-A profile of Fig. 2.
Fig. 4 is the B-B cutaway view of Fig. 2.
Fig. 5 and Fig. 6 are the sectional drawings of heat collecting sheet.
Shown in Fig. 1～4, water heater is made of heat collecting sheet group and dish intestinal tube with heat exchanger core in the present embodiment.Described heat collecting sheet group by at least three be set up in parallel, heat collecting sheet 1 that shape is identical constitutes, each heat collecting sheet 1 is provided with through hole 2.The dish intestinal tube has at least three straight lengths that are set up in parallel 3, and this straight length passes the through hole 3 on each heat collecting sheet.Between each straight length 3 by pipeline be connected in series (for ease of watching main improvement position---the heat collecting sheet of heat exchanger core, among Fig. 1 the connecting pipe between the straight length omitted and do not draw, and represent) with arrow.In the present embodiment, above-mentioned heat collecting sheet 1 is case of bending especially on vertical.In addition, in order further to utilize the heat energy of combustion product gases, present embodiment has additional the fin 4 that protrudes the heat collecting sheet surface on heat collecting sheet 1.The surface of protruding heat collecting sheets 1 owing to fin 4 extends to the central area between the Neighbor Set backing, thereby helps absorbing the heat of high temperature gas flow at this place of flowing through, and organizes air-flow to flow to the dish intestinal tube, reduces thermal loss.,, on heat collecting sheet 1, offered rectangular window 5 herein, and the two ends of the fin 4 on above-mentioned protrusion heat collecting sheet surface have been fixed on two sides of this rectangular window 5 for the ease of fin 4 is set.In the present embodiment, also allow influent stream mouth 6 that coils intestinal tube and the straight length (A pipe) that is positioned near the outside join especially, allow the straight length (B pipe) that head piece 7 and close middle and lower part of dish intestinal tube join.Promptly allow current enter the A pipe, flow to the E pipe through B pipe, C pipe, D pipe again, flow out (being to flow to shown in the arrow Fig. 1) from going out head piece 7 from influent stream mouth 6.Arrange into and out of the purpose of head piece it is to allow the current of not heating enter the dish intestinal tube in this way from the outside straight length that is positioned at the combustion product gases low-temperature space, allow the current of finishing heating from the straight length outflow dish intestinal tube of the middle and lower part that is positioned at the combustion product gases high-temperature region, so that more reasonably utilize heat.
Through actual measurement, when using in the heat exchanger core fuel-oil water heater in the present embodiment, the exhaust gas temperature of water heater is 173 ℃, and the heat exchanger flue-gas temperature of making than existing flat heat collecting sheet descends more than 70 ℃, the complete machine thermal efficiency is up to 92%, and existing water heater stably improves more than 5%.
In addition, the case of bending of employed heat collecting sheet 1 can appropriate change in the present embodiment, as also selecting the section configuration shown in Fig. 5 and Fig. 6 (being equivalent to the A-A profile in the present embodiment) for use.
Claims (4)
1, a kind of water heater heat exchanger core, constitute by heat collecting sheet group and dish intestinal tube, described heat collecting sheet group by at least three be set up in parallel, heat collecting sheet that shape is identical constitutes, each heat collecting sheet is provided with through hole, the dish intestinal tube has at least three straight lengths that are set up in parallel, described straight length passes the through hole on each heat collecting sheet, is connected in series by pipeline between each straight length, it is characterized in that described heat collecting sheet is case of bending on vertical.
2, heat exchanger core as claimed in claim 1 is characterized in that heat collecting sheet is provided with the fin that protrudes the heat collecting sheet surface.
3, heat exchanger core as claimed in claim 2 is characterized in that offering rectangular window on heat collecting sheet, the two ends of the fin on described protrusion heat collecting sheet surface are fixed on two sides of this rectangular window.
4, heat exchanger core as claimed in claim 1 is characterized in that the influent stream mouth that coils intestinal tube joins with the straight length that is positioned near the outside, and the straight length that goes out head piece and close middle and lower part of dish intestinal tube joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224088 CN2281504Y (en) | 1996-11-22 | 1996-11-22 | Heat exchanging core of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224088 CN2281504Y (en) | 1996-11-22 | 1996-11-22 | Heat exchanging core of water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281504Y true CN2281504Y (en) | 1998-05-13 |
Family
ID=33903151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96224088 Expired - Fee Related CN2281504Y (en) | 1996-11-22 | 1996-11-22 | Heat exchanging core of water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281504Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288058A (en) * | 2011-05-31 | 2011-12-21 | 河南省四达仙龙实业有限公司 | Heat collector of water heater wall-mounted gas boiler |
-
1996
- 1996-11-22 CN CN 96224088 patent/CN2281504Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288058A (en) * | 2011-05-31 | 2011-12-21 | 河南省四达仙龙实业有限公司 | Heat collector of water heater wall-mounted gas boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |