CN203704713U - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN203704713U CN203704713U CN201320850285.9U CN201320850285U CN203704713U CN 203704713 U CN203704713 U CN 203704713U CN 201320850285 U CN201320850285 U CN 201320850285U CN 203704713 U CN203704713 U CN 203704713U
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- CN
- China
- Prior art keywords
- fixed head
- heat exchanger
- heat
- refrigerant
- antirusting paint
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Paints Or Removers (AREA)
Abstract
The utility model aims to provide a heat exchanger which is used for inhibiting heat exchange performance reduction caused by attaching anti-rust coating to fins and inhibiting corrosion resistance reduction caused by melting of the anti-rust coating during welding. The heat exchanger is provided with a plurality of fins, a fixing plate, a plurality of refrigerant distributing pipes and a connecting pipe, wherein the fins are configured side by side, the fixing plate is arranged at the outer sides of the fins, the refrigerant distributing pipes are orthogonally connected with the fins and the fixing plate, the connecting pipe connects end parts, protruded from the fixing plate, of the refrigerant distributing pipes, and forms a refrigerant flow passage together with the refrigerant distributing pipes, and the fixing plate is formed by a plate of which the surface is coated with heat-resistant anti-rust coating in advance.
Description
Technical field
The utility model relates to a kind of heat exchanger.
Background technology
For example, have following fin tube type heat exchanger in heat exchanger, this fin tube type heat exchanger has: be provided with multiple fins in the mode parallel with air-flow direction; Fix the fixed head of this fin; And the pipe (tube) being connected with fin, cold-producing medium flows in this pipe, and this fin tube type heat exchanger makes cold-producing medium mobile in this pipe and carries out heat exchange by the air of fin.
Fin tube type heat exchanger is for example equipped on off-premises station and the indoor set etc. of refrigerator or aircondition.In the situation that fin tube type heat exchanger is equipped on refrigerator, exists and be stored in that gas (sulphur is gas, acetic acid etc.) that the food in refrigerator produces circulates in refrigerator and the situation of corroding fin tube type heat exchanger.And, the off-premises station that is equipped on aircondition at fin tube type heat exchanger, exist dew or rainwater to be attached to fin tube type heat exchanger and the situation of corroding fin tube type heat exchanger.
Therefore,, in fin tube type heat exchanger in the past, propose to have at heat exchanger to apply antirusting paint to suppress the heat exchanger (for example, with reference to patent documentation 1) of corrosion.In addition, the technology that this patent documentation 1 is recorded is the technology that applies antirusting paint after assembled heat interchanger at heat exchanger.
Patent documentation 1: TOHKEMY 2006-170506 communique (for example, with reference to 0026 section)
The technology that patent documentation 1 is recorded is the technology that applies antirusting paint after assembled heat interchanger at heat exchanger, is also attached with antirusting paint at the fin of heat exchange performance being made to very large contribution, the possibility that exists heat exchange performance to reduce.
On the other hand, also consider to apply at heat exchanger in advance the method for antirusting paint before assembled heat interchanger.In the assembling of heat exchanger, for multiple pipes (hairpin tube) of the copper pipe arrangement of hairpin are formed as to a continuous pipe arrangement, utilize the pipe (U elbow) of the copper pipe arrangement of U-shaped by connected to each other this hairpin tube herein.In addition, this hairpin tube was undertaken by welding etc. with being for example connected of U elbow.
; for apply the method for antirusting paint at heat exchanger in advance before assembled heat interchanger, the flame that has the burner because using in welding with applied the non-welding position (such as fixed head) of antirusting paint contact or thus the heat of welding position is passed to the possibility that the antirusting paint melting such as fixed head that has applied antirusting paint causes the corrosion resistance reduction of fixed head etc.
In more detail, the temperature of welding position is for example 800 DEG C of left and right, and the temperature of the fixed head that the flame of the burner during with welding contacts is also 500 DEG C of left and right.Because the fusing point of zinc is 420 DEG C of left and right, therefore there is the surperficial coating melting of galvanized steel plain sheet and cause fixed head corrosion resistance reduce possibility.
Utility model content
The utility model completes in order to address the above problem, the heat exchanger that when its object is to provide a kind of inhibition to cause heat exchange performance to reduce, suppress because of welding because antirusting paint is attached to fin, antirusting paint melting causes corrosion resistance to reduce.
The related heat exchanger of the utility model has: above-mentioned heat exchanger has: and multiple fins of row arrangement; Be arranged at the fixed head in the outside of multiple fins; Multiple refrigerant pipings, above-mentioned multiple refrigerant pipings are to be connected with multiple fins and the orthogonal mode of fixed head; And tube connector, this tube connector is connected to each other from the outstanding end of fixed head refrigerant piping, forms refrigerant flow path together with multiple refrigerant pipings, and fixed head is made up of the sheet material that is coated with in advance heat resistance antirusting paint on surface.
And the related heat exchanger of the utility model has: and multiple fins of row arrangement; Be arranged at the fixed head in the outside of multiple fins; Multiple refrigerant pipings, above-mentioned refrigerant piping is to be connected with multiple fins and the orthogonal mode of fixed head; And tube connector, this tube connector is connected to each other from the outstanding end of fixed head refrigerant piping, form refrigerant flow path together with multiple refrigerant pipings, wherein, be coated with heat resistance antirusting paint on the surface of fixed head in advance, the fixed head that is coated with heat resistance antirusting paint is connected to refrigerant piping, and the refrigerant piping and the tube connector that are connected with fixed head are welded together.
The heat exchanger related according to the utility model, owing to having said structure, therefore can suppress to cause heat exchange performance to reduce, can suppress to reduce because the antirusting paint melting of when welding causes corrosion resistance because antirusting paint is attached to fin.
Brief description of the drawings
Fig. 1 is the stereogram that the related heat exchanger of embodiment of the present utility model is shown.
Fig. 2 is the figure that is illustrated in the link situation of fixed head, hairpin tube, U elbow and fin in the situation that fixed head is coated with heat proof material.
Fig. 3 is the key diagram of the situation when hairpin tube shown in Fig. 1 and U elbow are welded.
Fig. 4 is the stereogram that the heat affecting scope of the fixed head in the situation that of welding at fixed head coating heat-resisting paint is shown.
Label declaration
1: heat exchanger; 2: hairpin tube (refrigerant piping); 2A: line part; 2B: bend; 3:U elbow (tube connector); 3A: pipe arrangement; 4: fin; 5: weld part; 6: fixed head; 7: burner; 8: welding heat affected scope; 9: steel plate; 10: heat-resisting film.
Detailed description of the invention
Below, based on accompanying drawing, embodiment of the present utility model is described.
Embodiment
Fig. 1 is the stereogram that the related heat exchanger of embodiment 1 is shown.Fig. 2 is the figure that is illustrated in the link situation of fixed head 6, hairpin tube 2, U elbow 3 and fin 4 in the situation that fixed head 6 is coated with heat-resisting paint.
The related heat exchanger 1 of present embodiment has carried out following improvement: when inhibition causes heat exchange performance to reduce, suppress because of welding because antirusting paint is attached to fin, antirusting paint melting causes corrosion resistance to reduce.
［ structure explanation ］
Heat exchanger 1 has: the multiple fins 4 that separate parallel at certain interval configuration; The hairpin tube 2 being connected in the mode orthogonal with fin 4; The U elbow 3 that is welded in hairpin tube 2 and hairpin tube 2 is connected; And be configured in the fixed head being formed by galvanized steel plain sheet 6 in the outside of fin 4 in the mode parallel with fin 4.This heat exchanger 1 is to make cold-producing medium mobile in hairpin tube 2 and U elbow 3 and the fin tube type heat exchanger that carries out heat exchange by the air of fin 4.
(fin 4)
Fin 4 is that the shape of overlooking while observation is for example the sheet material of quadrangle shape, is connected with hairpin tube 2 at fin 4.Cold or hot this fin 4 that is passed to of mobile cold-producing medium in hairpin tube 2 and U elbow 3.Therefore, not implement the coating of antirusting paint on the surface of fin 4, in order to avoid cold-producing medium and reducing by the heat exchanger effectiveness between the air of fin 4.In addition, in the present embodiment, for fin 4, describe as an example of the fin that formed by the aluminium of pyroconductivity excellence example, but be not limited thereto.
(finned tube 2 and U elbow 3)
Finned tube 2 is the pipe of U word shape.Finned tube 2 is for example made up of copper.The line part 2A that finned tube 2 has a linearity and the bend 2B of line part 2A that is connected both sides.In addition, line part 2A and bend 2B for example form by a pipe arrangement is implemented to bending machining.
At line part 2A, to be connected with multiple fins 4 with the mode of the planar quadrature of fin 4.
Under state before welding, a side's of line part 2A end side is connected in bend 2B, and the opposing party's end side is opened wide.,, under the state before hairpin tube 2 and U elbow 3 are welded, the opposing party's of the line part 2A of hairpin tube 2 end side is opened wide.
In addition, be welded in U elbow 3 for hairpin tube 2, one sides of gateway of the cold-producing medium that becomes inflow heat exchanger 1, and the opposing party not the pipe arrangement that bend to U word such with U elbow 3 be connected but be connected with the pipe arrangement 3A of such as linearity etc.
U elbow is the pipe arrangement of U word shape.U elbow 3 is for example by the material identical with the material that forms hairpin tube 2, copper forms.Under state before hairpin tube 2 and U elbow 3 are welded, a side of U elbow 3 and the opposing party's end side are opened wide.That is, a side's of U elbow 3 end side is welded in the opposing party's of the line part 2A of hairpin tube 2 end side, and the opposing party's of U elbow 3 end side is welded in the opposing party's of the line part 2A of other hairpin tubes 2 outside above-mentioned hairpin tube 2 end side.
Like this, heat exchanger 1 is configured to: hairpin tube 2 is welded to connect with U elbow 3, and wriggles in fin 4.
(fixed head 6)
Fixed head 6 is the parts that are fixed in inner side of the gabarit of off-premises station and indoor set etc. off-premises station and the indoor set etc. that is for example equipped on aircondition at heat exchanger 1.,, by fixed head 6 being fixed on to the inner side of the gabarit of off-premises station and indoor set, heat exchanger 1 is fixed in off-premises station and indoor set.
Fixed head 6 have as the steel plate 9 of sheet material and the surface by steel plate 9 apply and there is heat-resisting film 10(that stable on heating antirusting paint forms with reference to Fig. 2).
In addition, for suppress because of water etc. cause getting rusty etc., in order to improve corrosion resistance, steel plate 9 is for example to have implemented zinc-plated steel plate., fixed head 6 is to apply on the surface of having implemented zinc-plated steel plate 9 steel plate that has stable on heating antirusting paint and form.In the present embodiment, be illustrated as example to have implemented zinc-plated situation at fixed head 6, but be not limited thereto, for example, as long as implement highly corrosion resistant, high boiling plating.
Fixed head 6 is arranged at the end side of the coupling part side being connected with U elbow 3 by hairpin tube 2 in multiple fins 4, and is coated with heat resistance antirusting paint.In more detail, fixed head 6 is arranged at than the top side of fin 4 of the paper top side in Fig. 1 and the position of side on the lower, coupling part that is connected with U elbow 3 than hairpin tube 2.In addition, the coupling part that hairpin tube 2 connects with U elbow 3 refers to the part corresponding with the weld part 5 shown in Fig. 1 and Fig. 2.
Because fixed head 6 is disposed at such position, therefore in the time of the welding that connects hairpin tube 2 and U elbow 3, heat when welding that while existing fixed head 6 to be exposed to welding, flame (with reference to Fig. 3), hairpin tube 2 and the U elbow 3 of burner 7 have is passed to the situation of fixed head 6.But, owing to being formed with heat-resisting film 10 at fixed head 6, therefore, even if fixed head 6 is exposed to the flame of burner 7, also can suppress the zinc-plated melting of steel plate 9.
In addition, be formed with at fixed head 6 the heat-resisting film 10 that applies heat-resisting paint in advance and form.,, for fixed head 6, before the welding of hairpin tube 2 and U elbow 3, apply heat-resisting paint at fixed head 6 in advance fixed head 6 being connected in to fin 4 and implementing.
Like this, by applying in advance heat-resisting paint, can suppress heat-resisting paint and be attached to fixed head 6 position (such as fin 4 etc.) in addition.
In more detail, if apply heat-resisting paint after fixed head 6 being connected in to fin 4 and implementing the welding of hairpin tube 2 and U elbow 3, exist heat-resisting paint to be attached to the position beyond fixed head 6 and the possibility that causes the heat exchange performance of heat exchanger 1 to reduce.But, in the present embodiment, by applying in advance heat-resisting paint at fixed head 6, can prevent that antirusting paint is attached to fin 4 and causes heat exchange performance to reduce.
［ about welding ］
Fig. 3 is the key diagram of the situation when hairpin tube 2 shown in Fig. 1 and U elbow 3 are welded.Fig. 4 illustrates the not stereogram of the heat affecting scope of the fixed head 6 in the situation that fixed head 6 applies heat proof material and welds.
As shown in Figure 3, for heat exchanger 1, in the time carrying out the hairpin tube 2 of U-shaped and the welding of U elbow 3, the flame of burner 7 also can contact with fixed head 6.That is, because fixed head 6 is arranged at the end side of the coupling part side being connected with U elbow 3 by finned tube 2 in multiple fins 4, the coupling part that therefore flame of burner 7 is not only connected with U elbow 3 with hairpin tube 2 contacts, also with the Surface Contact of fixed head 6.
And fixed head 6 more approaches than fin 4 coupling part that hairpin tube 2 is connected with U elbow 3, therefore, correspondingly, thermal capacitance when welding that hairpin tube 2 and U elbow 3 have is easily passed to fixed head 6.
Heat when being contacted, weld with fixed head 6 by the flame of burner 7 is passed to fixed head 6 from hairpin tube 2 and U elbow 3, and as shown in Figure 4, the scope that easily becomes high temperature of fixed head 6 is corresponding with welding heat affected scope 8.
, applying in the heat exchanger of antirusting paint in advance at fixed head, although can prevent that antirusting paint is attached to fin etc., the zinc-plated melting of the part corresponding with above-mentioned welding heat affected scope 8 and cause corrosion resistance to reduce, cannot fully suppress to get rusty in the past.
But, for the related heat exchanger 1 of present embodiment, apply stable on heating antirusting paint by the surface of the steel plate 9 at fixed head 6 and form heat-resisting film 10.Therefore, can suppress heat that the zinc-plated reason burner 7 of the part corresponding with welding heat affected scope 8 in fixed head 6 produces etc. and melting.That is, can suppress the reduction of the corrosion resistance of fixed head 6, can suppress fixed head 6 and get rusty.
As the heat resistance antirusting paint applying at fixed head 6, need to be the coating that fusing point is higher than the fusing point of coating.,, in the time carrying out the welding of hairpin tube 2 and U elbow 3, the welding heat affected scope 8 of fixed head 6 is for example 500 DEG C of left and right, therefore, wishes that the heat resisting temperature of heat resistance antirusting paint is higher than 500 DEG C.For example, if heat resistance antirusting paint has 550 DEG C of above heat resistances,, than the high 50 DEG C of left and right of the temperature of welding heat affected scope 8, can suppress more reliably thus the coating generation melting of the steel plate 9 of fixed head 6.
In addition, as the heat resistance antirusting paint applying at fixed head 6, for example, can adopt ceramic coating.And, by apply for example degree in 10 μ m～40 μ m of thickness of the heat-resisting film 10 that heat resistance antirusting paint forms at steel plate 9.
In addition, owing to being coated with in advance heat resistance antirusting paint at fixed head 6, therefore also can apply heat resistance antirusting paint at the opening portion (omitting diagram) of the connection hairpin tube 2 that is formed at fixed head 6.,, when in the situation that this opening portion is also coated with heat resistance antirusting paint, in the time heat exchanger 1 being decomposed and hairpin tube 2 is unloaded from fixed head 6, be also attached with heat resistance antirusting paint at the opening portion that is originally connected with hairpin tube 2.
Thus, even if the coupling part that these fixed heads 6 of immersion such as dew or rainwater are connected with fin 4, owing to being attached with heat resistance antirusting paint at the opening portion of fixed head 6, therefore correspondingly can suppress fixed head 6 and be etched.
And, even if the coupling part that the flame of burner 7 is connected with U elbow 3 with hairpin tube 2 contact, heat when welding that hairpin tube 2 and U elbow 3 have is passed to this coupling part, owing to being attached with heat resistance antirusting paint, therefore correspondingly can suppress the coating melting of fixed head 6 and cause corrosion resistance reduce.
On the other hand, after in the past such assembled heat interchanger, apply in the heat exchanger of antirusting paint, be difficult to make above-mentioned opening portion to be attached with antirusting paint.Therefore, the related heat exchanger 1 of such heat exchanger that applies antirusting paint after assembled heat interchanger and present embodiment can be distinguished according to whether being attached with heat resistance antirusting paint at this opening portion in the past.
［ effect that the related heat exchanger 1 of present embodiment has ］
For the related heat exchanger 1 of present embodiment, because the fixed head 6 being formed by galvanized steel plain sheet etc. applies heat-resisting paint in advance, therefore there is not welding heat affected scope 8, the corrosion resistance that can suppress fixed head 6 reduces.
For the related heat exchanger 1 of present embodiment, fixed head 6 is connected in to hairpin tube 2, before the welding of carrying out hairpin tube 2 and U elbow 3, apply heat-resisting paint at fixed head 6 in advance.Therefore, there will not be the situation that is also attached with coating as in the past when entirety coating after the state that forms heat exchanger at the fin 4 of heat exchange performance being made to very large contribution, can suppress the reduction of heat exchange performance.
Claims (4)
1. a heat exchanger, is characterized in that,
Described heat exchanger has:
And multiple fins of row arrangement;
Be arranged at the fixed head in the outside of described multiple fins;
Multiple refrigerant pipings, described multiple refrigerant pipings are to be connected with described multiple fins and the orthogonal mode of described fixed head; And
Tube connector, this tube connector is connected to each other from the outstanding end of described fixed head described refrigerant piping, forms refrigerant flow path together with described multiple refrigerant pipings,
Described fixed head is made up of the sheet material that is coated with in advance heat resistance antirusting paint on surface.
2. heat exchanger according to claim 1, is characterized in that,
The heat resisting temperature that is coated on the heat resistance antirusting paint of described fixed head is more than 550 DEG C.
3. heat exchanger according to claim 1 and 2, is characterized in that,
Described fixed head has:
Implement zinc-plated steel plate; And
The heat-resisting film that applies described heat resistance antirusting paint on the surface of described steel plate and form.
4. a heat exchanger,
Described heat exchanger has:
And multiple fins of row arrangement;
Be arranged at the fixed head in the outside of described multiple fins;
Multiple refrigerant pipings, described multiple refrigerant pipings are to be connected with described multiple fins and the orthogonal mode of described fixed head; And
Tube connector, this tube connector is connected to each other from the outstanding end of described fixed head described refrigerant piping, forms refrigerant flow path together with described multiple refrigerant pipings,
Described heat exchanger is characterised in that,
Be coated with heat resistance antirusting paint on the surface of described fixed head in advance,
The described fixed head that is coated with described heat resistance antirusting paint is connected to described refrigerant piping,
The described refrigerant piping and the described tube connector that are connected with described fixed head are welded together.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012278324A JP2014122734A (en) | 2012-12-20 | 2012-12-20 | Heat exchanger and heat exchanger manufacturing method |
| JP2012-278324 | 2012-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704713U true CN203704713U (en) | 2014-07-09 |
Family
ID=51055137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850285.9U Expired - Fee Related CN203704713U (en) | 2012-12-20 | 2013-12-20 | Heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014122734A (en) |
| CN (1) | CN203704713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732474A (en) * | 2019-11-21 | 2020-01-31 | 广东美的制冷设备有限公司 | Surface processing method of heat exchanger side plate, heat exchanger and household appliance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021100173A1 (en) * | 2019-11-21 | 2021-05-27 | 三菱電機株式会社 | Brazing device and heat exchanger |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0822996B2 (en) * | 1986-07-16 | 1996-03-06 | 関西ペイント株式会社 | Heat resistant coating composition |
| JPH10220986A (en) * | 1997-01-31 | 1998-08-21 | Sanyo Electric Co Ltd | Heat exchanger |
| JP2008202813A (en) * | 2007-02-16 | 2008-09-04 | Mitsubishi Electric Corp | Refrigerating cycle device and its manufacturing method |
-
2012
- 2012-12-20 JP JP2012278324A patent/JP2014122734A/en active Pending
-
2013
- 2013-12-20 CN CN201320850285.9U patent/CN203704713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732474A (en) * | 2019-11-21 | 2020-01-31 | 广东美的制冷设备有限公司 | Surface processing method of heat exchanger side plate, heat exchanger and household appliance |
| CN110732474B (en) * | 2019-11-21 | 2024-04-26 | 广东美的制冷设备有限公司 | Surface machining method of heat exchanger side plate, heat exchanger and household appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014122734A (en) | 2014-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20201220 |