CN218915471U - Dry evaporator - Google Patents
Dry evaporator Download PDFInfo
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- CN218915471U CN218915471U CN202320099339.6U CN202320099339U CN218915471U CN 218915471 U CN218915471 U CN 218915471U CN 202320099339 U CN202320099339 U CN 202320099339U CN 218915471 U CN218915471 U CN 218915471U
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Abstract
The utility model relates to the technical field of evaporators, and provides a dry type evaporator which comprises an evaporator body, wherein an input baffle and an output baffle are arranged in the evaporator body, and divide an inner cavity of the evaporator body into a refrigerant input cavity, a heat exchange cavity and a refrigerant output cavity; the refrigerant input cavity is communicated with a refrigerant input pipeline, the refrigerant input cavity is also provided with a conical liquid separator, the heat exchange cavity is internally provided with a plurality of heat exchange tubes in an arrangement mode, the heat exchange cavity is also communicated with an equalizing water inlet pipe and a water outlet pipe, one end of the equalizing water inlet pipe, which is positioned in the heat exchange cavity, is provided with a plurality of water outlet holes, the water outlet pipe is arranged on the side wall of the evaporator body, and the refrigerant output cavity is communicated with the refrigerant output pipeline. The utility model can make the refrigerant in the refrigerant input cavity distribute more uniformly in each heat exchange tube, and at the same time, make the cold water inlet more uniform, and increase the heat exchange efficiency between the cold water and the heat exchange tubes.
Description
Technical Field
The utility model relates to the technical field of evaporators, in particular to a dry type evaporator.
Background
The evaporator is an important part in four refrigeration parts, and low-temperature condensed liquid passes through the evaporator to exchange heat with the outside, gasify and absorb heat, so that the refrigeration effect is achieved; the existing evaporators are mainly divided into dry evaporators, flooded evaporators and falling film evaporators, wherein the dry evaporators are used for enabling refrigerant to pass through the heat exchange tubes, and cold water runs outside the efficient heat exchange tubes.
The existing dry evaporator has the following problems in use: (1) For example, as shown in fig. 1, a current dry evaporator is mostly provided with a liquid separating cavity, the liquid separating cavity is communicated with a plurality of heat exchange tubes, and a refrigerant enters into each heat exchange tube through the liquid separating cavity, wherein the liquid separating cavity can play a certain role in separating the refrigerant, but in practical application, the liquid of the heat exchange tubes corresponding to an input pipeline is more than that of other heat exchange tubes, so that the liquid separation is uneven, in addition, a mixer is arranged for uniform liquid separation, for example, the patent number is 201520592256.6, the patent name is a patent for a liquid inlet distributor of the dry evaporator, and the mixer is arranged for separating the refrigerant twice, so that although a better liquid separation effect can be achieved, the kinetic energy of the refrigerant can be greatly reduced, the flow speed is reduced, and the gas-liquid layering phenomenon of the refrigerant is aggravated; (2) The current dry evaporator is generally provided with a water inlet pipe at one side and a water outlet pipe at the other side, and cold water introduced by one water inlet pipe flows unevenly in the evaporator to influence the heat exchange efficiency between the cold water and the heat exchange pipe, and in addition, the patent number is 202123277627.6, the patent name is a dry evaporator liquid equalizer structure, and even input is realized by arranging four connecting pipes for inputting the cold water, but in the practical application process, the position of a liquid outlet pipe can influence the input effect of the four connecting pipes, and the input uniformity can be influenced to a certain extent.
Therefore, the dry evaporator has urgent research value and good economic benefit and industrial application potential.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a dry evaporator which can lead the refrigerant in a refrigerant input cavity to be distributed more uniformly in each heat exchange tube, and simultaneously lead the cold water to be fed more uniformly, thereby increasing the heat exchange efficiency between the cold water and the heat exchange tubes.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the dry evaporator comprises an evaporator body, wherein an input baffle and an output baffle are arranged in the evaporator body, and the input baffle and the output baffle divide an inner cavity of the evaporator body into a refrigerant input cavity, a heat exchange cavity and a refrigerant output cavity;
the refrigerant input cavity is communicated with a refrigerant input pipeline, the refrigerant input cavity is internally provided with a conical liquid separator, the conical liquid separator is arranged on the input baffle, a plurality of heat exchange tubes are arranged in the heat exchange cavity, the heat exchange tubes are respectively arranged on the input baffle and the output baffle, the heat exchange cavity is internally communicated with an equalizing water inlet pipe and a water outlet pipe, one end of the equalizing water inlet pipe is arranged on the input baffle, the other end of the equalizing water inlet pipe penetrates through the output baffle and the side wall of the evaporator body and extends to the outer side of the evaporator body, one end of the equalizing water inlet pipe, which is positioned in the heat exchange cavity, is provided with a plurality of water outlet holes, and the water outlet pipe is arranged on the side wall of the evaporator body and is communicated with the refrigerant output pipeline.
As an improved technical scheme, the tip of the conical liquid distributor is arranged in a circular arc structure and faces the refrigerant input pipeline, and the conical liquid distributor and the refrigerant input pipeline are concentrically arranged.
As an improved technical scheme, the input baffle and the output baffle are respectively and oppositely provided with a plurality of through holes, the through holes are respectively communicated with the heat exchange tube, and the through holes on the input baffle are distributed around the circumference of the conical liquid separator.
As an improved technical scheme, a plurality of spiral grooves are respectively arranged on the outer side walls of the heat exchange tubes, and the rotation direction of each spiral groove is inclined from the heat exchange tube to the side wall of the heat exchange cavity.
As an improved technical scheme, a plurality of water outlets are arranged from the input baffle to the output baffle from dense to sparse.
As an improved technical scheme, the evaporator body is of a cylindrical structure, end covers are respectively sealed at two end parts, the refrigerant input pipeline and the refrigerant output pipeline are respectively installed on the end covers, and a supporting frame is also oppositely arranged at the bottom of the outer side wall of the evaporator body.
As an improved technical scheme, two refrigerant output pipelines are arranged and are oppositely arranged along two sides of the balance water inlet pipe.
After the technical scheme is adopted, the utility model has the beneficial effects that:
the conical liquid separator is arranged in the refrigerant input cavity and is arranged on the input baffle, and the refrigerant input by the refrigerant input pipeline can be uniformly split through the conical liquid separator, so that the refrigerant flows along the surface of the conical liquid separator, the effect of uniform dispersion is realized, and the input quantity of the refrigerant in each heat exchange tube is relatively kept in a uniform state;
the heat exchange cavity is also internally communicated with an equalizing water inlet pipe and a water outlet pipe, one end of the equalizing water inlet pipe is arranged on the input baffle, the other end of the equalizing water inlet pipe penetrates through the output baffle and the side wall of the evaporator body and extends to the outer side of the evaporator body, a plurality of water outlet holes are formed in the equalizing water inlet pipe, cold water in the equalizing water inlet pipe can be uniformly conveyed into the heat exchange cavity through the water outlet holes, and the equalizing water inlet pipe is convenient to contact with the heat exchange pipe, so that the heat exchange efficiency is improved;
the spiral grooves are respectively formed in the outer side walls of the heat exchange tubes, the heat exchange area of the heat exchange tubes is increased through the spiral grooves, heat exchange efficiency is improved, meanwhile, the flow direction is changed when cold water in the heat exchange cavity flows through the surfaces of the heat exchange tubes through the spiral structure of the spiral grooves, secondary flow and rotary motion are generated, heat exchange efficiency is improved, and meanwhile, the generated secondary flow and rotary motion can effectively avoid the problem that the surface of the heat exchange tubes is too low in local temperature, so that the heat exchange tubes are frosted.
In summary, the utility model provides a dry evaporator, which can make the refrigerant in the refrigerant input cavity distribute more uniformly in each heat exchange tube, and at the same time, make the cold water inlet more uniform, and increase the heat exchange efficiency between the cold water and the heat exchange tubes.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a conventional dry evaporator;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic cross-sectional view of the present utility model;
FIG. 4 is a schematic view of the structure of the inlet baffle and the conical dispenser of the present utility model;
FIG. 5 is a schematic view of a heat exchange tube according to the present utility model;
reference numerals: 1. the evaporator comprises an evaporator body, 2, an input baffle, 3, an output baffle, 4, a refrigerant input cavity, 5, a heat exchange cavity, 6, a refrigerant output cavity, 7, a refrigerant input pipeline, 8, a conical liquid separator, 9, a heat exchange tube, 10, an equalizing water inlet pipe, 11, a water outlet pipe, 12, a water outlet hole, 13, a refrigerant output pipeline, 14, a through hole, 15, a spiral groove, 16, an end cover, 17 and a supporting frame.
Detailed Description
The utility model will be further illustrated with reference to specific examples. The purpose and purpose of these exemplary embodiments are merely to illustrate the present utility model and are not intended to limit the true scope of the present utility model in any way.
As shown in fig. 2-5, a dry evaporator comprises an evaporator body 1, wherein an input baffle 2 and an output baffle 3 are arranged in the evaporator body 1, and the input baffle 2 and the output baffle 3 divide the inner cavity of the evaporator body 1 into a refrigerant input cavity 4, a heat exchange cavity 5 and a refrigerant output cavity 6;
the refrigerant input cavity 4 is communicated with a refrigerant input pipeline 7, the refrigerant input cavity 4 is internally provided with a conical liquid separator 8, the conical liquid separator 8 is arranged on the input baffle 2, the refrigerant input by the refrigerant input pipeline 7 can be uniformly distributed through the conical liquid separator 8, the refrigerant flows along the surface of the conical liquid separator 8, the effect of uniform distribution is realized, the input quantity of the refrigerant in each heat exchange pipe 9 is relatively kept in a uniform state, a plurality of heat exchange pipes 9 are arranged in the heat exchange cavity 5, the plurality of heat exchange pipes 9 are respectively arranged on the input baffle 2 and the output baffle 3, the heat exchange cavity 5 is internally communicated with an equalizing water inlet pipe 10 and a water outlet pipe 11, one end of the equalizing water inlet pipe 10 is arranged on the input baffle 2, the other end penetrates through the side walls of the output baffle 3 and the evaporator body 1 and extends to the outer side of the evaporator body 1, the equalizing water inlet pipe 10 is provided with a plurality of water outlet holes 12, cold water in the equalizing water inlet pipe 10 can be uniformly conveyed into the heat exchange cavity 5 through the plurality of water outlet holes 12, the heat exchange pipes 9 are convenient to contact with the heat exchange pipes 9, the heat exchange efficiency is improved, the heat exchange cavity 5 is also communicated with the refrigerant output side wall 13 arranged on the evaporator body 1, and the refrigerant output side wall 13 is communicated with the refrigerant output cavity 1.
As shown in fig. 3-4, the tip of the conical dispenser 8 is arranged in a circular arc structure and faces the refrigerant input pipeline 7, the conical dispenser 8 and the refrigerant input pipeline 7 are concentrically arranged, and the uniform distribution of the refrigerant can be ensured and the abrasion to the tip of the conical dispenser 8 can be reduced by arranging the tip of the conical dispenser 8 in a circular arc structure.
As shown in fig. 3-4, a plurality of through holes 14 are oppositely arranged on the input baffle 2 and the output baffle 3, the through holes 14 are respectively communicated with the heat exchange tubes 9, in the application, the heat exchange tubes 9 are arranged on the through holes 14 of the input baffle 2 and the output baffle 3 in a welding mode, the refrigerant in the refrigerant input cavity 4 is conveyed into the refrigerant output cavity 6 through the through holes 14 and the heat exchange tubes 9, the through holes 14 on the input baffle 2 are distributed around the circumference of the conical liquid separator 8, the refrigerant input by the refrigerant input pipeline 7 is uniformly distributed around through the conical liquid separator 8, and enters the heat exchange tubes 9 through the through holes 14, so that better uniform liquid distribution is realized, and the refrigerant liquid in each heat exchange tube 9 is relatively kept consistent.
As shown in fig. 3 and 5, the outer side walls of the heat exchange tubes 9 are respectively provided with a spiral groove 15, the rotation direction of the spiral grooves 15 is set from the heat exchange tubes 9 to the side walls of the heat exchange cavity 5, the heat exchange area of the heat exchange tubes 9 is increased by arranging the spiral grooves 15, and the heat exchange efficiency is improved.
As shown in fig. 3, the water outlet holes 12 are arranged from the input baffle plate 2 to the output baffle plate 3 from dense to sparse, and the water outlet pipe 11 is close to the output baffle plate 3, so that the density of the water outlet holes 12 at the input baffle plate 2 is higher than that of the water outlet holes at the output baffle plate 3, so that cold water in the balanced water inlet pipe 10 flows to the position of the input baffle plate 2 as much as possible and performs sufficient heat exchange with the liquid state refrigerant, and cold water input at the position close to the output baffle plate 3 performs final heat exchange with the gas state refrigerant, thereby performing heat exchange with the refrigerant in the heat exchange tube 9 sufficiently, and ensuring higher heat exchange efficiency.
Referring to fig. 2 to 3, the evaporator body 1 has a cylindrical structure, end caps 16 are respectively sealed at both end portions by welding, the refrigerant inlet pipe 7 and the refrigerant outlet pipe 13 are respectively mounted on the end caps 16 by welding, and a supporting frame 17 is also provided at the bottom of the outer side wall of the evaporator body 1 by welding.
As shown in connection with fig. 2 to 3, the refrigerant output pipes 13 are provided in two and are disposed opposite along both sides of the balance water inlet pipe 10.
For ease of understanding, the working procedure of this embodiment is given below:
as shown in fig. 2 to 5, firstly, the refrigerant enters the refrigerant input cavity 4 through the refrigerant input pipeline 7, the refrigerant input by the refrigerant input pipeline 7 is uniformly dispersed to the periphery under the action of the conical liquid separator 8, and enters each heat exchange tube 9 through the through holes 14 arranged on the input baffle 2, meanwhile, the cold water in the balanced water inlet pipe 10 enters the heat exchange cavity 5 through the water outlet holes 12 and exchanges heat with the refrigerant in the heat exchange tubes 9, and due to the spiral grooves 15 arranged on the heat exchange tubes 9, secondary flow and rotary movement can be generated in the cold water flowing process, so that the heat exchange efficiency is enhanced, meanwhile, the problem of frost crack of the heat exchange tubes 9 can be avoided, after that, the cold water in the heat exchange cavity 5 is output through the water outlet pipe 11, the liquid refrigerant in the heat exchange tubes 9 is changed into a gas state after absorbing heat and enters the refrigerant output cavity 6, and is output through the refrigerant output pipeline 13.
In summary, the utility model provides a dry evaporator, which can make the refrigerant in the refrigerant input cavity distribute more uniformly in each heat exchange tube, and at the same time make the cold water inlet more uniform, and increase the heat exchange efficiency between the cold water and the heat exchange tubes.
It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of protection defined in the claims appended hereto.
Claims (7)
1. A dry evaporator, characterized by: the evaporator comprises an evaporator body, wherein an input baffle and an output baffle are arranged in the evaporator body, and the input baffle and the output baffle divide an inner cavity of the evaporator body into a refrigerant input cavity, a heat exchange cavity and a refrigerant output cavity;
the refrigerant input cavity is communicated with a refrigerant input pipeline, the refrigerant input cavity is internally provided with a conical liquid separator, the conical liquid separator is arranged on the input baffle, a plurality of heat exchange tubes are arranged in the heat exchange cavity, the heat exchange tubes are respectively arranged on the input baffle and the output baffle, the heat exchange cavity is internally communicated with an equalizing water inlet pipe and a water outlet pipe, one end of the equalizing water inlet pipe is arranged on the input baffle, the other end of the equalizing water inlet pipe penetrates through the output baffle and the side wall of the evaporator body and extends to the outer side of the evaporator body, one end of the equalizing water inlet pipe, which is positioned in the heat exchange cavity, is provided with a plurality of water outlet holes, and the water outlet pipe is arranged on the side wall of the evaporator body and is communicated with the refrigerant output pipeline.
2. A dry evaporator as set forth in claim 1 wherein: the tip of toper knockout is convex structure setting, and towards the refrigerant input pipeline, toper knockout with the refrigerant input pipeline sets up concentrically.
3. A dry evaporator as set forth in claim 1 wherein: the input baffle and the output baffle are respectively and oppositely provided with a plurality of through holes, a plurality of through holes are respectively communicated with the heat exchange tube, and the plurality of through holes on the input baffle are distributed around the circumference of the conical liquid distributor.
4. A dry evaporator as set forth in claim 1 wherein: the outer side walls of the heat exchange tubes are respectively provided with a spiral groove, and the rotation direction of the spiral grooves is inclined from the heat exchange tubes to the side walls of the heat exchange cavity.
5. A dry evaporator as set forth in claim 1 wherein: the water outlet holes are arranged from the input baffle plate to the output baffle plate from dense to sparse.
6. A dry evaporator as set forth in claim 1 wherein: the evaporator body is of a cylindrical structure, end covers are respectively sealed at the end parts of the two ends, the refrigerant input pipeline and the refrigerant output pipeline are respectively installed on the end covers, and a supporting frame is also oppositely arranged at the bottom of the outer side wall of the evaporator body.
7. A dry evaporator as set forth in claim 1 wherein: the refrigerant output pipelines are arranged in two, and are oppositely arranged along the two sides of the balance water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099339.6U CN218915471U (en) | 2023-02-02 | 2023-02-02 | Dry evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320099339.6U CN218915471U (en) | 2023-02-02 | 2023-02-02 | Dry evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218915471U true CN218915471U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320099339.6U Active CN218915471U (en) | 2023-02-02 | 2023-02-02 | Dry evaporator |
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|---|---|
| CN (1) | CN218915471U (en) |
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2023
- 2023-02-02 CN CN202320099339.6U patent/CN218915471U/en active Active
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