CN110701943A - Evaporating pipe and manufacturing method thereof, evaporator and air conditioner - Google Patents
Evaporating pipe and manufacturing method thereof, evaporator and air conditioner Download PDFInfo
- Publication number
- CN110701943A CN110701943A CN201910955760.0A CN201910955760A CN110701943A CN 110701943 A CN110701943 A CN 110701943A CN 201910955760 A CN201910955760 A CN 201910955760A CN 110701943 A CN110701943 A CN 110701943A
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- Prior art keywords
- main rack
- evaporation tube
- rack
- tube
- wall
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- 238000001704 evaporation Methods 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 50
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 239000003507 refrigerant Substances 0.000 abstract description 35
- 239000007791 liquid phase Substances 0.000 abstract description 18
- 239000012071 phase Substances 0.000 abstract description 15
- 239000003595 mist Substances 0.000 abstract description 3
- 238000000889 atomisation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an evaporation tube and a manufacturing method thereof, an evaporator and an air conditioner, wherein spiral teeth comprise a main rack and side racks, the main rack is vertically arranged with the inner wall of the evaporation tube, the side racks are symmetrical to the main rack, the vertical distance between the side racks and the inner wall of the evaporation tube is 0.4mm, the width of the side racks is 0.1mm, the vertical distance between the main rack and the inner wall of the evaporation tube is 0.8mm, and the width of the main rack is 0.1 mm; the included angles between the side racks and the main rack are both 45 degrees; an evaporating pipe comprising the spiral teeth comprises the following manufacturing method: processing internal teeth on the plate surface, rolling the plate into a tubular shape and welding. Compared with the prior art, the liquid-phase refrigerant entering the evaporation tube is spread to be thinner, the gas-phase refrigerant blows the liquid-phase refrigerant into mist and then is captured by the channel between the side rack and the main rack, so that the generated gas-phase refrigerant further promotes the thinning and atomization of the liquid-phase refrigerant, the phase state of the refrigerant is converted more thoroughly, and the heat exchange performance of the dry type evaporation tube is better.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to an evaporation tube, a manufacturing method of the evaporation tube, an evaporator and an air conditioner.
Background
The energy crisis starting in the seventies of the twentieth century has led the human society to deeply recognize the importance of improving the energy use efficiency to the world, and the improvement of the energy efficiency of high-power heat exchangers in the industries of petroleum, chemical engineering, refrigeration and the like is particularly important. In the current commercial shell-and-tube heat exchanger, the evaporators are divided into a flooded evaporator and a dry evaporator, and theoretically, the dry evaporator has better energy efficiency than the flooded evaporator, but actually, the dry evaporator is not, which indicates that the current dry evaporator does not fully exert the heat exchange potential and has a large lifting space. The dry-type evaporator tube is used as a heat exchange component of the dry-type evaporator, and the improvement of the performance of the dry-type evaporator tube means the improvement of the energy efficiency of the dry-type evaporator. The conventional dry-type evaporation tube is only provided with trapezoidal or triangular internal threads on the inner wall, and the internal threads enable gas-phase refrigerants to blow thin liquid-phase refrigerants to strengthen the heat exchange effect in the tube.
Disclosure of Invention
The invention provides an evaporation tube, a manufacturing method thereof, an evaporator and an air conditioner, and effectively solves the problem that the heat exchange performance of a dry-type evaporation tube is poor due to the fact that the tooth height of inner teeth of the evaporation tube is low in the traditional evaporation tube processing process.
The technical scheme of the invention is as follows: an evaporating tube having an inner wall provided with helical teeth, said helical teeth comprising: the main rack and locate respectively the main rack both sides and with form the side rack of channel between the main rack.
The main rack is perpendicular to the inner wall of the evaporation tube.
The side racks on the two sides are symmetrical to the main rack.
The vertical distance H1 between the main rack and the inner wall of the evaporation tube is 0.5mm to 1.0 mm.
The side rack and the main rack are obliquely arranged.
The included angle between the side rack and the main rack is 15-75 degrees.
The vertical distance H2 between the side rack and the inner wall of the evaporation tube is 0.3mm to 0.6 mm.
The width W1 of the master rack is 0.05mm to 0.15 mm.
The width W2 of the side rack is 0.05mm to 0.2 mm.
The helical teeth are spirally arranged on the inner wall of the evaporation tube, and the helical angle beta of the helical teeth is 45-89 degrees.
A method of manufacturing an evaporator tube comprising the steps of: processing internal teeth on the plate surface; and rolling the plate into a tubular shape and welding and forming.
The evaporator is characterized in that the evaporation tube is adopted as the evaporation tube in the evaporator.
An air conditioner comprises the evaporator.
Compared with the prior art, the invention has the advantages that: the invention provides an evaporation tube and a manufacturing method thereof, an evaporator and an air conditioner, wherein the inner wall of the evaporation tube is provided with spiral teeth, the spiral teeth comprise a main rack and side racks respectively arranged at two sides of the main rack, a liquid-phase refrigerant entering the evaporation tube is thinned under the action of the spiral teeth, the heat exchange area of the refrigerant in the evaporation tube is increased to the maximum extent, the liquid-phase refrigerant is blown into mist by a gas-phase refrigerant along the length direction of the evaporation tube, and the mist refrigerant is captured by a channel between the side racks and the main rack under the action of inertia, so that the gas-phase refrigerant generated by evaporation of the gas-phase refrigerant further promotes thinning and atomization of the liquid-phase refrigerant, the phase state of the refrigerant is converted more thoroughly, and the heat exchange performance of a dry type evaporation tube is better.
Drawings
FIG. 1 is a schematic cross-sectional view of an evaporating tube according to the present invention;
FIG. 2 is a schematic diagram of a helical tooth in a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a helical tooth in a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a helical tooth in a third embodiment of the present invention;
fig. 5 is a schematic diagram of a helical tooth in a fourth embodiment of the present invention.
Detailed Description
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
The invention provides an evaporation tube, as shown in figure 1, the section of the evaporation tube along the axial direction is schematic, and a spiral tooth 1 is arranged on the inner wall 3 of the evaporation tube and is in a thread arrangement.
As shown in fig. 2, the spiral teeth in the first embodiment are schematically configured, and each set of spiral teeth is composed of three racks, including a main rack 11 and side racks 12 respectively disposed on both sides of the main rack 11.
In the embodiment, the main rack 11 is vertically arranged with the inner wall 3 of the evaporation tube, the side racks 12 are respectively located at the left and right sides of the main rack 11, wherein the side racks 12 are connected with the bottom of the main rack 11, an included angle between one side rack 12 (the right side of the main rack 11) and the main rack 11 is θ 1, an included angle between the other side rack 12 (the left side of the main rack 11) and the main rack 11 is θ 2, and the two side racks 12 are symmetrically arranged with respect to the main rack 11, that is, θ 1 is equal to θ 2; wherein, in order to ensure the maximization of the effect of the helical teeth, the range of the vertical distance H1 between the main rack 11 and the inner wall 3 of the evaporation tube in this embodiment is 0.5mm to 1.0mm, the range of the vertical distance H2 between the two side racks 12 and the inner wall 3 of the evaporation tube is 0.3mm to 0.6mm, the range of the values of θ 1 and θ 2 is 15 to 75 °, the helical teeth are arranged in the evaporation tube in a threaded manner, and the helical angle β of the helical teeth can be 45 ° to 89 °.
Preferably, the vertical distance H1 between the main rack 11 and the inner wall 3 of the evaporator tube has a value of 0.8 mm.
Preferably, the vertical distance H2 between the two side racks 12 and the inner wall 3 of the evaporator tube has a value of 0.4 mm.
Preferably, the angles θ 1 and θ 2 between the two side racks 12 and the main rack 11 are 45 °.
Preferably, the helical angle β of the helical teeth on the inner wall of the evaporator tube is 45 °.
In other modifications of the present embodiment, the two side racks 12 may not be symmetrically disposed with respect to the main rack 11, that is, θ 1 is not equal to θ 2, but in any modification, θ 1 and θ 2 should have values ranging from 15 ° to 75 °.
As shown in fig. 3, in the second embodiment of the helical gear according to the present invention, the helical gear includes a main rack 11 and side racks 12 disposed on both sides of the main rack 11, the overall helical gear in this embodiment is in a "mountain" shape, the main rack 11 and the side racks 12 on both sides are disposed in parallel, and the side racks 12 on both sides are symmetrical with respect to the main rack 11, so that the height of the main rack 11 disposed in the middle is greater than the height of the side racks 12 to ensure the heat exchange effect.
As shown in fig. 4, in the third embodiment of the helical teeth provided by the present invention, the helical teeth include a main rack 11 and side racks 12 disposed on both sides of the main rack 11, the top of the main rack 11 in this embodiment is set as a tip, the tops of the two side racks 12 are also set as tips, wherein the vertical distance between the main rack 11 and the inner wall of the evaporation tube is slightly greater than the vertical distance between the side racks 12 and the inner wall of the evaporation tube, so that the heat exchange effect of the evaporation tube can be optimized.
As shown in fig. 5, the fourth embodiment of the helical gear proposed by the present invention, the helical gear includes a main rack 11 and side racks 12 disposed on both sides of the main rack 11, and is different from the third embodiment in that the top of the main rack 11 in the present embodiment is set to be a rounded tip, the tops of the two side racks 12 are also set to be rounded tips, and the sides from the rounded tip of the main rack 11 to the left and right sides of the bottom can be set to be arc-shaped, and the sides from the rounded tip of the side rack 12 to the left and right sides of the bottom can be set to be arc-shaped, wherein the vertical distance between the main rack 11 and the inner wall of the evaporation tube is slightly greater than the vertical distance between the side racks 12 and the inner wall of the evaporation tube, so as to optimize the heat exchange effect of the evaporation tube.
The working principle of the spiral teeth in the invention is as follows: the spiral teeth adopt the mountain-shaped structural design, so that the heat exchange area of the inner surface of the evaporation tube is improved as much as possible, and the purpose of heat exchange enhancement is achieved; in addition, the phase state of the refrigerant for evaporation heat exchange in the dry evaporation tube is gas-liquid two-phase, wherein the flow rate of the gas-phase refrigerant is far higher than that of the liquid-phase refrigerant, meanwhile, under the action of gravity, liquid-phase refrigerant is deposited at the bottom of the heat exchange tube when flowing through the evaporation tube, and gas-phase refrigerant blows thin liquid-phase refrigerant when rapidly flowing through the evaporation tube so as to strengthen heat exchange, after the spiral teeth are adopted, the thickness of the liquid-phase refrigerant can be spread to be thinner, the gas-phase refrigerant quickly blows the liquid-phase refrigerant to the rack through the evaporation pipe to form fog, the fog liquid-phase refrigerant falls into the channel 2 between the side rack 12 and the main rack 11, at the moment, the liquid-phase refrigerant in the channel 2 is continuously converted into gas-phase refrigerant by heat exchange, the gas-phase refrigerant can further thin the liquid-phase refrigerant, and the liquid-phase refrigerant is blown to atomize the liquid-phase refrigerant, so that the refrigerant can fully exchange heat in the evaporation tube.
The invention also provides an evaporator which uses the evaporation tube provided by the invention.
Since the conventional extrusion processing method cannot process the tooth profile, the invention also provides a manufacturing method of the evaporating tube, which comprises the following steps: firstly, processing the spiral teeth on one surface of a thin plate; then, the sheet is rolled into a circular tube shape and then formed by welding.
The tooth height of traditional dry-type evaporating pipe internal tooth is on the low side, and the manufacturing method of this evaporating pipe is the internal tooth of processing earlier, then rolls into the cast, and such processing mode does not receive the size restriction of evaporating pipe, can accomplish higher level with the internal tooth to the vertical height of pipe wall, thereby can make the thickness of liquid phase refrigerant more thin by the share like this through the height of doing high internal tooth, promotes the heat transfer effect of evaporating pipe.
The above specific embodiments are only intended to illustrate the inventive concept and many modifications and variations may be made by those skilled in the art within the spirit of the invention, which are included within the scope of the invention.
Claims (13)
1. An evaporating tube having an inner wall provided with helical teeth, the helical teeth comprising: the main rack and locate respectively the main rack both sides and with form the side rack of channel between the main rack.
2. The evaporating tube of claim 1, wherein said primary rack is disposed perpendicular to an inner wall of said evaporating tube.
3. The evaporating tube of claim 2, wherein said two side racks are symmetrical to said main rack.
4. The evaporating tube of claim 1, wherein the vertical distance H1 between the main rack and the inner wall of the evaporating tube is 0.5mm to 1.0 mm.
5. The evaporating tube of claim 1, wherein the side racks and the main rack are disposed in an inclined manner.
6. The evaporating tube of claim 5, wherein the angle between said side splines and said main spline is 15 ° to 75 °.
7. The evaporating tube of claim 3, wherein the vertical distance H2 between the side rack and the inner wall of the evaporating tube is 0.3mm to 0.6 mm.
8. The evaporating tube of claim 1, wherein the width W1 of the primary rack is 0.05mm to 0.15 mm.
9. The evaporating tube of claim 1, wherein the side splines have a width W2 of 0.05mm to 0.2 mm.
10. The evaporating tube as set forth in claim 1, wherein said spiral teeth are spirally disposed on an inner wall of said evaporating tube, and a spiral angle β of said spiral teeth is 45 ° to 89 °.
11. A method of manufacturing an evaporation tube as claimed in claims 1 to 10, comprising the steps of: processing internal teeth on the plate surface; and rolling the plate into a tubular shape and welding and forming.
12. An evaporator, characterized in that the evaporation tube in the evaporator is the evaporation tube of any one of claims 1 to 10.
13. An air conditioner characterized in that it comprises an evaporator as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955760.0A CN110701943A (en) | 2019-10-09 | 2019-10-09 | Evaporating pipe and manufacturing method thereof, evaporator and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955760.0A CN110701943A (en) | 2019-10-09 | 2019-10-09 | Evaporating pipe and manufacturing method thereof, evaporator and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701943A true CN110701943A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910955760.0A Pending CN110701943A (en) | 2019-10-09 | 2019-10-09 | Evaporating pipe and manufacturing method thereof, evaporator and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834366A (en) * | 2021-09-06 | 2021-12-24 | 珠海格力电器股份有限公司 | Heat exchange tubes, heat exchangers and air conditioning equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203376Y (en) * | 2008-03-17 | 2009-03-04 | 金龙精密铜管集团股份有限公司 | Internal screw tube and heat exchanger |
| CN104154796A (en) * | 2014-07-29 | 2014-11-19 | 袁新华 | Internal-thread heat exchange pipe and manufacturing process thereof |
| CN204666013U (en) * | 2015-05-15 | 2015-09-23 | 河南机电高等专科学校 | Narrow tooth root air-conditioning refrigerating heat exchange riffled tube |
| CN206235230U (en) * | 2016-12-02 | 2017-06-09 | 海亮（安徽）铜业有限公司 | Efficient heat transfer type inner screw thread copper pipe |
-
2019
- 2019-10-09 CN CN201910955760.0A patent/CN110701943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203376Y (en) * | 2008-03-17 | 2009-03-04 | 金龙精密铜管集团股份有限公司 | Internal screw tube and heat exchanger |
| CN104154796A (en) * | 2014-07-29 | 2014-11-19 | 袁新华 | Internal-thread heat exchange pipe and manufacturing process thereof |
| CN204666013U (en) * | 2015-05-15 | 2015-09-23 | 河南机电高等专科学校 | Narrow tooth root air-conditioning refrigerating heat exchange riffled tube |
| CN206235230U (en) * | 2016-12-02 | 2017-06-09 | 海亮（安徽）铜业有限公司 | Efficient heat transfer type inner screw thread copper pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834366A (en) * | 2021-09-06 | 2021-12-24 | 珠海格力电器股份有限公司 | Heat exchange tubes, heat exchangers and air conditioning equipment |
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Application publication date: 20200117 |
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