CN202092500U - Heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes - Google Patents
Heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes Download PDFInfo
- Publication number
- CN202092500U CN202092500U CN201120005398XU CN201120005398U CN202092500U CN 202092500 U CN202092500 U CN 202092500U CN 201120005398X U CN201120005398X U CN 201120005398XU CN 201120005398 U CN201120005398 U CN 201120005398U CN 202092500 U CN202092500 U CN 202092500U
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- heat exchange
- outer tube
- tube
- refrigerant
- evaporator
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Abstract
The utility model discloses a heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes, aims to provide an evaporator used heat exchange tube capable of reducing heat exchange area and refrigerant filling amount, and an evaporator composed of the heat exchange tubes. The evaporator used heat exchange tube comprises an outer tube and at least one inner tube; the at least one inner tube is mounted inside the outer tube; a plurality of jetting holes are formed on the inner tube. By adopting the inner jetting heat exchange manner, the utility model can jet high speed flows onto a heat exchange surface by the jetting holes, generates turbulent flows, increases the heat exchange coefficient of the evaporator, and can greatly reduce the heat exchange area of the heat exchange tube beam; at the same time, because refrigerant only can flow in the inner tubes of the heat exchange tube beam, the utility model greatly reduce the refrigerant filled amount in the refrigeration system, and effectively solves the problems of the application limits to some refrigerant working mediums, especially to burnable and detonative working mediums.
Description
Technical field
The utility model relates to the vaporizer technology field, in particular, relates to a kind of heat exchanger tube of evaporimeter and evaporimeter of composition thereof of being used for.
Background technology
Evaporimeter is the most important a kind of heat exchanger in the refrigeration system.For refrigeration system, it is the heat exchanger of heat absorption outside system.The effect of evaporimeter is to utilize liquid refrigerant under low pressure to seethe with excitement, and changes the heat that steam also absorbs be cooled object or medium into, reaches the refrigeration purpose.Therefore evaporimeter is an equipment of producing cold and output cold in the refrigeration system.In the steam compression type refrigeration circulation,, can be divided into air-cooled evaporimeter and water-cooled evaporimeter, and the water-cooled evaporimeter is by being divided into forms such as flooded evaporator, dry evaporator and spray-type evaporator by the difference of feed liquid way by the medium difference that is cooled.
In the flooded evaporator, liquid refrigerant enters evaporimeter through throttling arrangement, and it is certain that the liquid level in the evaporimeter keeps.Heat-transfer pipe in the evaporimeter is immersed in the refrigerant liquid.Still contain big quantity of fluid in the gas-liquid mixture after the heat absorption evaporation, the damp steam of overflowing in the evaporimeter after gas-liquid separation back into compressor.The liquid refrigerant pressure in flooded evaporator bottom is higher, thereby pairing cold-producing medium saturated-steam temperature is also higher, causes heat transfer temperature difference to reduce, and makes the evaporimeter heat transfer property descend.Another technological difficulties of flooded evaporator are that oil return is difficult and unstable, because lubricating oil and cold-producing medium dissolve each other, make the part back flow of refrigerant in compressor, have reduced refrigeration system efficient.
Dry evaporator is then directly controlled the tube side that liquid refrigerant enters evaporimeter by heating power expansion valve or electric expansion valve, and refrigerant liquid changes gas fully in pipe, and the medium that is cooled then flows in the tube side outside heat-transfer pipe.The evaporation tube surface of dry evaporator is that partially liq is wetting, so surface coefficient of heat transfer is lower slightly
Spraying evaporator adopts the evaporation mode of falling film type.Cold-producing medium sprays on the heat-exchanging tube bundle by the distributor at evaporimeter top, and falling liquid film flows downward on heat-exchanging tube bundle, medium heat in the absorption tube and evaporating.Once property evaporation and repeatedly evaporate two kinds of forms of spraying evaporator.Disposable evaporimeter is meant that cold-producing medium sprays in evaporimeter under, all evaporate through behind the abundant evaporating heat-exchanging pipe.Base of evaporator has only the liquid refrigerant that has on a small quantity to deposit, and refrigerator oil concentration is higher in the mixed liquor.Do not exist with liquid state at base of evaporator for making liquid refrigerant obtain abundant heat exchange evaporation, heat-exchanging tube bundle is abundant in the evaporimeter, makes the evaporimeter volume seem too huge like this, and the unit are heat exchange efficiency is also lower.Repeatedly spraying evaporator is meant and adds a circulating pump again outside evaporimeter, is used for aspirating the liquid refrigerant that is deposited on base of evaporator and delivers to circulated sprinkling in the distributor.Disposable relatively vaporation-type, it has reduced the volume of evaporimeter greatly.But mean and to increase more power consumption that structure is more complicated owing to add a circulating pump.
The vapor-compression refrigerant cycle of traditional form, the cold-producing medium evaporation process in evaporimeter must guarantee under environment under low pressure, so also need through entering evaporimeter again, the system architecture complexity after the throttling step-down process through the high-pressure refrigerant behind the compression condensation.
In above-mentioned various forms of evaporimeters,, can't solve the problem of refrigeration system filling quantity mostly though characteristics are respectively arranged.Especially for the cold-producing medium working medium of flammable explosiveness, there are strict requirements to the filling quantity of working medium in actual applications, and this has just limited the application of these working medium in some large-scale refrigerating system greatly.
The utility model content
The utility model is in order to overcome weak point of the prior art, a kind of heat exchange area that can reduce heat exchanger tube to be provided, reduce the volume of evaporimeter, reducing the heat exchanger tube that is used for evaporimeter of refrigeration system filling quantity of refrigerant and the evaporimeter of composition thereof.
The utility model is achieved through the following technical solutions:
A kind of heat exchanger tube that is used for evaporimeter is characterized in that, comprises pipe in outer tube and at least one, and described outer tube inside is equipped with pipe at least one, and interior pipe is provided with a plurality of spurt holes.
Described outer tube and the coaxial setting of interior pipe.
Described outer tube is light pipe or bellows.
A kind of air-cooled jet flow evaporimeter, comprise refrigerant distributor, many heat exchanger tubes, discharge, it is characterized in that, described heat exchanger tube comprises pipe in outer tube and at least one, and described outer tube inside is equipped with pipe at least one, and interior pipe is provided with a plurality of spurt holes, the outlet of described refrigerant distributor is managed and is connected respectively with in every, the outer tube end sealing of refrigerant distributor one end, the other end of described outer tube is connected with discharge, every inner tube portion sealing of discharge one end.
Described outer tube and the coaxial setting of interior pipe, diameter of inner pipe is preferably 3～5mm, and the spurt hole diameter is preferably 0.1～0.5mm.
Described outer tube is light pipe or bellows.
A kind of water-cooled jet flow evaporimeter, comprise the water-cooled evaporator shell, in the described water-cooled evaporator shell heat exchanger tube is installed, be respectively arranged with refrigerant inlet and refrigerant outlet on the described water-cooled evaporator shell, it is characterized in that, described heat exchanger tube comprises pipe in outer tube and at least one, described outer tube inside is equipped with pipe at least one, interior pipe is provided with a plurality of spurt holes, described refrigerant inlet is connected with interior pipe, the outer tube end sealing of refrigerant inlet one end, described refrigerant outlet is connected with the outer tube other end, the inner tube portion sealing of refrigerant outlet end.
Described outer tube and the coaxial setting of interior pipe, a plurality of spurt holes are along inner pipe wall shape in the shape of a spiral.
Described outer tube is light pipe or bellows.
The utlity model has following technique effect:
1, injection heat transfer form in evaporimeter of the present utility model adopts, high velocity stream thigh by spurt hole is ejected on the heat-exchange surface, produces Turbulence Flow, has increased the coefficient of heat transfer of evaporimeter, the heat exchange area of heat-exchanging tube bundle can be greatly reduced, the volume of evaporimeter can be reduced.
2, evaporimeter of the present utility model adopts the heat exchange form of spray pattern, can make full use of the initial high pressure of the cold-producing medium that enters evaporimeter, after the aperture jet flow, pressure is converted into the power of jet flow thigh, utilize the high spraying speed of jet flow thigh and refrigerant to carry out heat exchange.So, adopt the kind of refrigeration cycle of jet flow evaporimeter can part and even omit the throttling step-down process of traditional vapor compression kind of refrigeration cycle fully, optimize and simplify the version of kind of refrigeration cycle.
3, evaporimeter of the present utility model adopts telescopic injection heat transfer form, and cold-producing medium only flows in the interior pipe of heat-exchanging tube bundle, and this has just reduced the filling quantity of cold-producing medium in the refrigeration system greatly.Under identical operating mode, adopt the working medium filling quantity of the refrigeration system of the comparable employing dry evaporator of evaporimeter of the present utility model to reduce more than 50%.The minimizing of working medium filling quantity, the application restriction that has solved the especially flammable explosiveness working medium of some cold-producing medium working medium greatly.
Description of drawings
Fig. 1 is used for being with in the heat exchanger tube outer tube of evaporimeter the cutaway view of single interior pipe for the utility model;
Fig. 2 is used for being with in the heat exchanger tube outer tube of evaporimeter the cutaway view of many interior pipes for the utility model;
Fig. 3 is the schematic diagram of the air-cooled evaporimeter of the utility model;
Fig. 4 is the schematic diagram of the utility model water-cooled evaporimeter.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The heat exchanger tube that the utility model is used for evaporimeter comprises in outer tube 1 and at least one manages 2, Fig. 1 is used for being with in the heat exchanger tube outer tube of evaporimeter the cutaway view of single interior pipe for the utility model, Fig. 2 is used for being with in the heat exchanger tube outer tube of evaporimeter the cutaway view of many interior pipes for the utility model, described outer tube 1 inside is equipped with manages 2 at least one, interior pipe 2 is provided with a plurality of spurt holes 3.Outer tube and interior pipe can adopt multiple compound mode, and spurt hole 3 can have multiple arrangement mode.Described outer tube is light pipe or bellows etc.Diameter of inner pipe is preferably 3～5mm, and the spurt hole diameter is preferably 0.1～0.5mm.
Outer tube and the best coaxial setting of interior pipe, the uniform jet flow of streamer that can guarantee aperture on outer tube wall, thereby make the cold-producing medium and the medium heat exchange that is cooled even, improve heat exchange efficiency.A plurality of spurt holes are along inner pipe wall shape in the shape of a spiral.
Fig. 3 is the schematic diagram of the air-cooled evaporimeter of the utility model, comprise refrigerant distributor 4, many heat exchanger tubes 5, discharge 7, the figure of heat exchanger tube is referring to Fig. 1 and Fig. 2, described heat exchanger tube comprises in outer tube 1 and at least one manages 2, described outer tube 1 inside is equipped with manages 2 at least one, interior pipe 2 is provided with a plurality of spurt holes 3, the outlet of described refrigerant distributor 4 is connected with pipe 2 in every respectively, the outer tube end sealing of refrigerant distributor one end, the other end of described outer tube 1 is connected with discharge 7, every inner tube portion sealing of discharge one end.
The high-pressure refrigerant that comes out from condenser enters the interior pipe of casing type heat exchanging tube bank along separate routes by refrigerant distributor after throttling, when managing the spurt hole place in cold-producing medium is flowed through, come out because of there being the pressure reduction jet flow inside and outside managing.After cold-producing medium that jet flow is come out stream strand impacts outer tube wall, flow and carry out heat exchange with the air in the outer tube outside along the inwall falling liquid film.Cold-producing medium in outer tube and the interior pipe clamp layer absorbs the heat of air and steam raising becomes gaseous refrigerant, and gaseous refrigerant is discharged into compressor after discharge converges.
Fig. 4 is the schematic diagram of the utility model water-cooled evaporimeter, comprise water-cooled evaporator shell 8, in the described water-cooled evaporator shell 8 heat exchanger tube 9 is installed, be respectively arranged with refrigerant inlet 10 and refrigerant outlet 6 on the described water-cooled evaporator shell, the schematic diagram of heat exchanger tube as depicted in figs. 1 and 2, described heat exchanger tube comprises in outer tube 1 and at least one manages 2, described outer tube 1 inside is equipped with manages 2 at least one, interior pipe 2 is provided with a plurality of spurt holes 3, described refrigerant inlet 10 is connected with interior pipe 2, the outer tube 1 end sealing of refrigerant inlet one end, described refrigerant outlet 6 is connected with the outer tube other end, the inner tube portion sealing of refrigerant outlet end.
The high-pressure refrigerant that comes out from condenser through after the throttling (under certain operating mode, also can not throttling.) enter the interior pipe 2 of heat-exchanging tube bundle by refrigerant inlet 10, in flowing through, cold-producing medium during pipe spurt hole place, comes out because of there being the pressure reduction jet flow inside and outside managing.After cold-producing medium that jet flow is come out stream strand impacts outer tube wall, flow and carry out heat exchange with the chilled water in the outer tube outside along the inwall falling liquid film.Cold-producing medium in outer tube and the interior pipe clamp layer absorbs the heat of chilled water and steam raising becomes gaseous refrigerant, and gaseous refrigerant is discharged into compressor through refrigerant outlet 6.Chilled water enters evaporimeter inside through the chilled water inlet, discharges evaporimeter with the heat exchange of evaporimeter heat-exchanging tube bundle after chilled water exports.
Claims (9)
1. a heat exchanger tube that is used for evaporimeter is characterized in that, comprises pipe in outer tube and at least one, and described outer tube inside is equipped with pipe at least one, and interior pipe is provided with a plurality of spurt holes.
2. the heat exchanger tube that is used for evaporimeter according to claim 1 is characterized in that, described outer tube is 3～5mm with the coaxial setting of interior pipe, diameter of inner pipe, and the spurt hole diameter is 0.1～0.5mm.
3. the heat exchanger tube that is used for evaporimeter according to claim 1 is characterized in that, described outer tube is light pipe or bellows.
4. air-cooled jet flow evaporimeter that uses the described heat exchanger tube of claim 1, comprise refrigerant distributor, many heat exchanger tubes, discharge, it is characterized in that, the outlet of described refrigerant distributor is managed and is connected respectively with in every, the outer tube end sealing of refrigerant distributor one end, the other end of described outer tube is connected with discharge, every inner tube portion sealing of discharge one end.
5. air-cooled jet flow evaporimeter according to claim 4 is characterized in that, described outer tube and the coaxial setting of interior pipe, and a plurality of spurt holes are along inner pipe wall shape in the shape of a spiral.
6. air-cooled jet flow evaporimeter according to claim 4 is characterized in that described outer tube is light pipe or bellows.
7. water-cooled jet flow evaporimeter that uses the described heat exchanger tube of claim 1, comprise the water-cooled evaporator shell, in the described water-cooled evaporator shell heat exchanger tube is installed, be respectively arranged with refrigerant inlet and refrigerant outlet on the described water-cooled evaporator shell, it is characterized in that described refrigerant inlet is connected with interior pipe, the outer tube end sealing of refrigerant inlet one end, described refrigerant outlet is connected with the outer tube other end, the inner tube portion sealing of refrigerant outlet end.
8. water-cooled jet flow evaporimeter according to claim 7 is characterized in that, described outer tube and the coaxial setting of interior pipe, and a plurality of spurt holes are along inner pipe wall shape in the shape of a spiral.
9. water-cooled jet flow evaporimeter according to claim 7 is characterized in that described outer tube is light pipe or bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005398XU CN202092500U (en) | 2011-01-10 | 2011-01-10 | Heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005398XU CN202092500U (en) | 2011-01-10 | 2011-01-10 | Heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202092500U true CN202092500U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120005398XU Expired - Fee Related CN202092500U (en) | 2011-01-10 | 2011-01-10 | Heat exchange tube used in an evaporator and an evaporator composed by the heat exchange tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202092500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083912A (en) * | 2019-12-25 | 2020-04-28 | 湖南大学 | Phase change energy storage cold energy distribution unit, air conditioning system using same and control method of air conditioning system |
-
2011
- 2011-01-10 CN CN201120005398XU patent/CN202092500U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083912A (en) * | 2019-12-25 | 2020-04-28 | 湖南大学 | Phase change energy storage cold energy distribution unit, air conditioning system using same and control method of air conditioning system |
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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: 20111228 Termination date: 20130110 |