CN220152988U - Combined evaporator and refrigeration equipment - Google Patents
Combined evaporator and refrigeration equipment Download PDFInfo
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- CN220152988U CN220152988U CN202321506004.8U CN202321506004U CN220152988U CN 220152988 U CN220152988 U CN 220152988U CN 202321506004 U CN202321506004 U CN 202321506004U CN 220152988 U CN220152988 U CN 220152988U
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- refrigerant
- falling film
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 208
- 239000011552 falling film Substances 0.000 claims abstract description 49
- 238000005507 spraying Methods 0.000 claims abstract description 38
- 238000001704 evaporation Methods 0.000 claims abstract description 35
- 230000008020 evaporation Effects 0.000 claims abstract description 35
- 239000003507 refrigerant Substances 0.000 claims description 85
- 239000007921 spray Substances 0.000 claims description 70
- 238000011084 recovery Methods 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 28
- 230000007423 decrease Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a combined evaporator and refrigeration equipment, which comprises a shell with a tubular inner cavity, wherein the tubular inner cavity is divided into an upper falling film pipe distribution area and a lower liquid filling pipe distribution area; the falling film tube distribution area is provided with falling film evaporation tube bundles and spraying components, the falling film evaporation tube bundles are distributed in a trapezoid shape, each spraying component comprises a spraying plate, the semi-arc spraying plate covers the trapezoid shape, and a plurality of nozzles are uniformly distributed on the bottom surface of the spraying plate; the flooded tube distribution area is provided with a flooded heat exchange tube bundle and a flooded liquid inlet tube; the top of the shell is provided with an exhaust port. The combined evaporator ensures the heat exchange efficiency of all falling film evaporation tube bundles by reducing the number of the columns of the falling film evaporation tube bundles, fully utilizes the residual space at the bottom of the shell to exchange heat through the flooded heat exchange tube bundles, and improves the overall heat exchange efficiency of the evaporator.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a combined evaporator and refrigeration equipment with the combined evaporator.
Background
The flooded evaporator and the falling film evaporator are shell-and-tube evaporators widely used in water chilling units, and the heat exchange performance of the falling film evaporator is higher than that of the flooded evaporator under the same size specification. However, the tube bundles at the bottom of the falling film evaporator cannot directly contact spray droplets due to the influence of arrangement of the tube bundles, and only can contact residual liquid evaporated by the upper tube bundles, so that the heat exchange effect of the tube bundles is gradually decreased layer by layer downwards. If the flow rate of the shell side refrigerant is increased, a large amount of accumulated liquid can be generated at the bottom of the shell, so that the heat exchange efficiency is affected, and the heat exchange is unstable.
Disclosure of Invention
Aiming at the defects of the background technology, the utility model provides a combined evaporator with higher heat exchange efficiency and more stable working condition and refrigeration equipment using the combined evaporator.
The utility model provides a combined evaporator, which comprises a shell with a tubular inner cavity, wherein the tubular inner cavity is divided into a falling film pipe distribution area at the upper part and a liquid filling pipe distribution area at the lower part;
the falling film tube distribution area is provided with falling film evaporation tube bundles and spraying components, the falling film evaporation tube bundles are distributed in a trapezoid shape, each spraying component comprises a spraying plate, the semi-arc spraying plate covers the trapezoid shape, and a plurality of nozzles are uniformly distributed on the bottom surface of the spraying plate;
the flooded tube distribution area is provided with a flooded heat exchange tube bundle and a flooded liquid inlet tube;
the top of the shell is provided with an exhaust port.
Preferably, the evaporator is further provided with a liquid separator, the liquid separator is located outside the shell, a liquid inlet end of the liquid separator is connected with the refrigerant input pipe, the liquid separator is provided with two liquid outlet ends, one liquid outlet end is connected with the spraying assembly, and the other liquid outlet end is connected with the full liquid inlet pipe.
Preferably, the spray assembly further comprises a spray header and a plurality of spray branch pipes connected with the spray header, a liquid inlet of the spray header is connected with a liquid outlet end of the liquid separator through a pipeline, and each spray branch pipe is connected with a plurality of nozzles;
the spray pipes are arranged in the spray plate, strip-shaped protrusions are arranged at the top of the spray plate, and the spray header pipe is arranged in the strip-shaped protrusions.
Preferably, the liquid-full distribution area is also provided with an oil and refrigerant mixed liquid recovery component;
the oil and refrigerant mixed liquid recovery assembly is provided with a plurality of liquid suction pipes positioned at different depths below the liquid level of the refrigerant, and a plurality of suction holes are distributed on the pipe body of the liquid suction pipe.
Preferably, the oil and refrigerant mixed solution recycling assembly further comprises a liquid extracting cylinder which extends in the same direction as the liquid extracting pipe, one end of the liquid extracting cylinder is positioned in the tubular inner cavity, and the other end of the liquid extracting cylinder is positioned outside the shell;
the liquid suction tube is internally provided with a liquid suction tube fixing plate, a plurality of through holes are formed in the liquid suction tube fixing plate, and the liquid suction tubes are inserted into the through holes one by one to be fixed.
Preferably, suction holes are uniformly distributed on the pipe body of the liquid suction pipe positioned in the liquid suction cylinder and the pipe body positioned outside the liquid suction cylinder.
Preferably, the liquid filling inlet pipe and the oil and refrigerant mixed liquid recovery assembly are respectively arranged at two ends of the extending direction of the shell.
Preferably, one end of the liquid filling inlet pipe is closed, and the other end of the liquid filling inlet pipe is connected with one liquid outlet end of the liquid separator through a pipeline;
the part of the pipe body of the full-liquid feed pipe penetrates through the shell and stretches into the full-liquid distribution pipe area, and a plurality of liquid outlet holes are distributed on the pipe body of the full-liquid feed pipe stretching into the full-liquid distribution pipe area.
Preferably, the combined evaporator further comprises a liquid level sensor, a spray refrigerant valve and a full liquid refrigerant valve;
the liquid level sensor is arranged in the tubular inner cavity, the spraying refrigerant valve is arranged on a pipeline between the spraying main pipe and the liquid separator, and the liquid filling refrigerant valve is arranged on a pipeline between the liquid filling inlet pipe and the liquid separator.
The utility model also provides refrigeration equipment provided with the combined evaporator according to any one of the technical schemes.
The beneficial effects of the utility model are as follows: the combined evaporator ensures the heat exchange efficiency of all falling film evaporation tube bundles by reducing the row number of the falling film evaporation tube bundles, fully utilizes the residual space at the bottom of the shell to exchange heat through the flooded heat exchange tube bundles, and improves the overall heat exchange efficiency of the evaporator; the spray plate is designed to be semi-arc, and the falling film evaporation tube bundles are arranged to be trapezoid, so that the area of the falling film evaporation tube bundles capable of directly receiving spraying is increased, and the heat exchange efficiency is further improved; the oil and refrigerant mixed liquid recovery assembly replaces the traditional oil return assembly, so that the oil return speed is improved.
Drawings
The utility model is described in detail below with reference to examples and figures, wherein:
fig. 1 is a tube layout of a combined evaporator of the present utility model.
Fig. 2 is a cross-sectional view of the combined evaporator of the utility model.
Fig. 3 is a perspective view of an oil/refrigerant mixture recovery assembly.
Fig. 4 is a cross-sectional view of an oil/refrigerant mixture recovery assembly.
Fig. 5 is a cross-sectional view of a liquid-filled inlet tube.
Reference numerals:
1-shell, 2-falling film distribution area, 21-falling film evaporation tube bundle, 3-full liquid distribution area, 31-full liquid heat exchange tube bundle, 4-spraying component, 41-spraying plate, 42-spraying main pipe, 43-spraying branch pipe, 5-full liquid inlet pipe, 51-liquid outlet hole, 6-exhaust port, 7-knockout, 8-oil and refrigerant mixed liquid recovery component, 81-liquid suction pipe, 82-suction hole, 83-liquid suction cylinder, 84-liquid suction pipe fixing plate, 91-liquid level sensor, 92-spraying refrigerant valve and 93-full liquid refrigerant valve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the utility model, not to imply that each embodiment of the utility model must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles of the present utility model are described in detail below with reference to the drawings and examples.
The utility model provides a combined evaporator, which comprises a shell 1 with a tubular inner cavity, wherein the tubular inner cavity is divided into a falling film pipe distribution area 2 at the upper part and a liquid filling pipe distribution area 3 at the lower part;
the falling film tube distribution area 2 is provided with a falling film evaporation tube bundle 21 and a spraying assembly 4, the falling film evaporation tube bundle 21 is arranged in a trapezoid shape, the spraying assembly 4 comprises a spraying plate 41, the semi-arc spraying plate 41 is covered above the trapezoid shape, and a plurality of nozzles are uniformly distributed on the bottom surface of the spraying plate 41;
the flooded cloth pipe area 3 is provided with a flooded heat exchange tube bundle 31 and a flooded liquid inlet pipe 5;
the top of the shell 1 is provided with an exhaust port 6.
The falling film evaporation tube bundles 21 in the embodiment cannot be expanded to the lower half part of the shell 1, compared with a traditional falling film evaporator, the number of the horizontal rows of the falling film evaporation tube bundles 21 in the combined evaporator is smaller, and the conditions of low heat exchange efficiency and unstable working condition of the bottom falling film evaporation tube bundles 21 are avoided. The liquid filling inlet pipe 5 can compensate heat exchange power loss caused by the reduction of the falling film evaporation tube bundle 21, and can fully utilize the space at the bottom of the shell 1 to exchange heat, so that the overall heat exchange efficiency of the combined evaporator is improved. Meanwhile, the problem that the evaporation heat exchange of the falling film evaporation tube is affected by the accumulated liquid of the shell bottom refrigerant in the background technology can be avoided in the full-liquid heat exchange mode.
In this embodiment, the spray plate 41 is designed to be semi-arc, the falling film evaporation tube bundles 21 are arranged to be trapezoid, and the falling film evaporation tube bundles 21 located on the top surface and the side surfaces of the trapezoid can all receive the refrigerant directly sprayed by the spray assembly 4, so that the heat exchange efficiency is improved. In addition, since the housing 1 is cylindrical, the semi-arc shower plate 41 hardly occupies much space in the inner cavity of the housing 1.
In this embodiment, the refrigerant needs to enter the shell 1 through the spray assembly 4 and the flooded inlet pipe 5, and simultaneously meets the heat exchange requirements of the falling film evaporation pipe bundle 21 and the flooded heat exchange pipe bundle 31. Therefore, the evaporator is further provided with a liquid dispenser 7, the liquid dispenser 7 is located outside the shell 1, a liquid inlet end of the liquid dispenser 7 is connected with the refrigerant input pipe, the liquid dispenser 7 is provided with two liquid outlet ends, one liquid outlet end is connected with the spraying assembly 4, and the other liquid outlet end is connected with the full liquid inlet pipe 5.
In this embodiment, the spray assembly 4 further includes a spray header 42 and a plurality of spray branches 43 connected to the spray header 42, where a liquid inlet of the spray header 42 is connected to a liquid outlet of the liquid separator 7 through a pipe, and each spray branch 43 is connected to a plurality of nozzles;
the spray branches 43 are arranged in the spray plate 41, strip-shaped protrusions are arranged on the top of the spray plate 41, and the spray header 42 is arranged in the strip-shaped protrusions.
The spray branch pipe 43 is arranged inside the spray plate 41, a spray pipe is not required to be additionally arranged, the strip-shaped protrusions can be integrally arranged with the spray plate 41, and the strip-shaped protrusions can be separately processed and then assembled, so that the assembly difficulty of the combined evaporator is reduced, and the combined evaporator is not easy to deform.
In this embodiment, the liquid-full distribution pipe area 3 is further provided with an oil and refrigerant mixed liquid recovery assembly 8, and the oil and refrigerant mixed liquid recovery assembly 8 is used for replacing a conventional oil return assembly. The refrigerant is mixed with compressor lubricating oil, the volume of the shell cavity of the evaporator is larger, and the bottom of the cavity is easy to store mixed liquid of the lubricating oil and the refrigerant, so that the oil return of the compressor is difficult. The oil and refrigerant mixed liquid recovery assembly 8 is provided with a plurality of liquid suction pipes 81 positioned at different depths below the liquid surface of the refrigerant, and a plurality of suction holes 82 are distributed on the pipe body of the liquid suction pipe 81. Layering of the lubricant and refrigerant may occur and different depths of the extraction tube 81 may extract different levels of lubricant. A plurality of suction holes 82 are arranged on the tube body of the liquid suction tube 81, so that the range of sucking the mixed liquid can be enlarged.
In this embodiment, the oil and refrigerant mixed solution recovery assembly 8 further includes a liquid suction cylinder 83 extending in the same direction as the liquid suction pipe 81, one end of the liquid suction cylinder 83 is located in the tubular inner cavity, and the other end is located outside the casing 1;
the liquid suction cylinder 83 is internally provided with a liquid suction pipe fixing plate 84, the liquid suction pipe fixing plate 84 is provided with a plurality of through holes, and the liquid suction pipes 81 are inserted into the through holes one by one to be fixed.
The liquid suction cylinder 83 is used for fixing the liquid suction pipe 81 and is connected with a liquid pump. As can be seen from fig. 4, suction holes 82 are uniformly formed in the pipe body of the suction pipe 81 located in the suction cylinder 83 and the pipe body located outside the suction cylinder 83, so that the pressures in the suction pipes 81 with different heights can be equalized.
In this embodiment, the liquid filling inlet pipe 5 and the oil/refrigerant mixed liquid recovery unit 8 are disposed at two ends of the housing 1 in the extending direction. In operation, the more the flooded heat exchanger tube bundle 31 is in proximity to the flooded inlet pipe 5, the more intense it is to evaporate, even causing the refrigerant to boil. In fig. 2, the liquid filling inlet pipe 5 is close to the right end of the shell 1, and the liquid filling distribution area 3 is in a state that the liquid level of the refrigerant gradually decreases from right to left, the temperature of the refrigerant gradually decreases from right to left, and the reaction state of the refrigerant gradually calms from right to left. Therefore, the oil/refrigerant mixture recovery assembly 8 located on the left can be more advantageous for oil return. In addition, the top discharge port 6 of the housing 1 is also biased to the left, avoiding boiling refrigerant droplets entering the discharge port 6 damaging the compressor.
In the embodiment, one end of the liquid filling inlet pipe 5 is closed, and the other end is connected with one liquid outlet end of the liquid separator 7 through a pipeline;
part of the pipe body of the liquid filling inlet pipe 5 penetrates through the shell 1 and stretches into the liquid filling distribution pipe area 3, and a plurality of liquid outlet holes 51 are distributed on the pipe body of the liquid filling inlet pipe 5 stretching into the liquid filling distribution pipe area 3.
The liquid-full liquid inlet pipe 5 with the design can spray the refrigerant at different liquid levels, so that the refrigerant sprayed at the same time can be contacted with the liquid-full heat exchange tube bundle 31 with a wider range.
In this embodiment, the combined evaporator further includes a liquid level sensor 91, a spray refrigerant valve 92, and a flooded refrigerant valve 93;
a liquid level sensor 91 is mounted in the tubular interior, a spray refrigerant valve 92 is mounted on the piping between the spray header 42 and the dispenser 7, and a liquid-full refrigerant valve 93 is mounted on the piping between the liquid-full intake pipe 5 and the dispenser 7.
By means of the liquid level sensor 91, the refrigeration system in which the combined evaporator is located can control the refrigerant flow of the spray refrigerant valve 92 and the flooded refrigerant valve 93 in accordance with the refrigerant liquid level.
The utility model also provides refrigeration equipment provided with the combined evaporator described in any one of the embodiments. The combined evaporator comprises a shell 1 with a tubular inner cavity, wherein the tubular inner cavity is divided into an upper falling film pipe distribution area 2 and a lower full liquid pipe distribution area 3;
the falling film tube distribution area 2 is provided with a falling film evaporation tube bundle 21 and a spraying assembly 4, the falling film evaporation tube bundle 21 is arranged in a trapezoid shape, the spraying assembly 4 comprises a spraying plate 41, the semi-arc spraying plate 41 is covered above the trapezoid shape, and a plurality of nozzles are uniformly distributed on the bottom surface of the spraying plate 41;
the flooded cloth pipe area 3 is provided with a flooded heat exchange tube bundle 31 and a flooded liquid inlet pipe 5;
the top of the shell 1 is provided with an exhaust port 6.
The falling film evaporation tube bundles 21 in the embodiment cannot be expanded to the lower half part of the shell 1, compared with a traditional falling film evaporator, the number of the horizontal rows of the falling film evaporation tube bundles 21 in the combined evaporator is smaller, and the conditions of low heat exchange efficiency and unstable working condition of the bottom falling film evaporation tube bundles 21 are avoided. The liquid filling inlet pipe 5 can compensate heat exchange power loss caused by the reduction of the falling film evaporation tube bundle 21, and can fully utilize the space at the bottom of the shell 1 to exchange heat, so that the overall heat exchange efficiency of the combined evaporator is improved. Meanwhile, the problem that the evaporation heat exchange of the falling film evaporation tube is affected by the accumulated liquid of the shell bottom refrigerant in the background technology can be avoided in the full-liquid heat exchange mode.
In this embodiment, the spray plate 41 is designed to be semi-arc, the falling film evaporation tube bundles 21 are arranged to be trapezoid, and the falling film evaporation tube bundles 21 located on the top surface and the side surfaces of the trapezoid can all receive the refrigerant directly sprayed by the spray assembly 4, so that the heat exchange efficiency is improved. In addition, since the housing 1 is cylindrical, the semi-arc shower plate 41 hardly occupies much space in the inner cavity of the housing 1.
In this embodiment, the refrigerant needs to enter the shell 1 through the spray assembly 4 and the flooded inlet pipe 5, and simultaneously meets the heat exchange requirements of the falling film evaporation pipe bundle 21 and the flooded heat exchange pipe bundle 31. Therefore, the evaporator is further provided with a liquid dispenser 7, the liquid dispenser 7 is located outside the shell 1, a liquid inlet end of the liquid dispenser 7 is connected with the refrigerant input pipe, the liquid dispenser 7 is provided with two liquid outlet ends, one liquid outlet end is connected with the spraying assembly 4, and the other liquid outlet end is connected with the full liquid inlet pipe 5.
In this embodiment, the spray assembly 4 further includes a spray header 42 and a plurality of spray branches 43 connected to the spray header 42, where a liquid inlet of the spray header 42 is connected to a liquid outlet of the liquid separator 7 through a pipe, and each spray branch 43 is connected to a plurality of nozzles;
the spray branches 43 are arranged in the spray plate 41, strip-shaped protrusions are arranged on the top of the spray plate 41, and the spray header 42 is arranged in the strip-shaped protrusions.
The spray branch pipe 43 is arranged inside the spray plate 41, a spray pipe is not required to be additionally arranged, the strip-shaped protrusions can be integrally arranged with the spray plate 41, and the strip-shaped protrusions can be separately processed and then assembled, so that the assembly difficulty of the combined evaporator is reduced, and the combined evaporator is not easy to deform.
In this embodiment, the liquid-full distribution pipe area 3 is further provided with an oil and refrigerant mixed liquid recovery assembly 8, and the oil and refrigerant mixed liquid recovery assembly 8 is used for replacing a conventional oil return assembly. The refrigerant is mixed with compressor lubricating oil, the volume of the shell cavity of the evaporator is larger, and the bottom of the cavity is easy to store mixed liquid of the lubricating oil and the refrigerant, so that the oil return of the compressor is difficult. The oil and refrigerant mixed liquid recovery assembly 8 is provided with a plurality of liquid suction pipes 81 positioned at different depths below the liquid surface of the refrigerant, and a plurality of suction holes 82 are distributed on the pipe body of the liquid suction pipe 81. Layering of the lubricant and refrigerant may occur and different depths of the extraction tube 81 may extract different levels of lubricant. A plurality of suction holes 82 are arranged on the tube body of the liquid suction tube 81, so that the range of sucking the mixed liquid can be enlarged.
In this embodiment, the oil and refrigerant mixed solution recovery assembly 8 further includes a liquid suction cylinder 83 extending in the same direction as the liquid suction pipe 81, one end of the liquid suction cylinder 83 is located in the tubular inner cavity, and the other end is located outside the casing 1;
the liquid suction cylinder 83 is internally provided with a liquid suction pipe fixing plate 84, the liquid suction pipe fixing plate 84 is provided with a plurality of through holes, and the liquid suction pipes 81 are inserted into the through holes one by one to be fixed.
The liquid suction cylinder 83 is used for fixing the liquid suction pipe 81 and is connected with a liquid pump. As can be seen from fig. 4, suction holes 82 are uniformly formed in the pipe body of the suction pipe 81 located in the suction cylinder 83 and the pipe body located outside the suction cylinder 83, so that the pressures in the suction pipes 81 with different heights can be equalized.
In this embodiment, the liquid filling inlet pipe 5 and the oil/refrigerant mixed liquid recovery unit 8 are disposed at two ends of the housing 1 in the extending direction. In operation, the more the flooded heat exchanger tube bundle 31 is in proximity to the flooded inlet pipe 5, the more intense it is to evaporate, even causing the refrigerant to boil. In fig. 2, the liquid filling inlet pipe 5 is close to the right end of the shell 1, and the liquid filling distribution area 3 is in a state that the liquid level of the refrigerant gradually decreases from right to left, the temperature of the refrigerant gradually decreases from right to left, and the reaction state of the refrigerant gradually calms from right to left. Therefore, the oil/refrigerant mixture recovery assembly 8 located on the left can be more advantageous for oil return. In addition, the top discharge port 6 of the housing 1 is also biased to the left, avoiding boiling refrigerant droplets entering the discharge port 6 damaging the compressor.
In the embodiment, one end of the liquid filling inlet pipe 5 is closed, and the other end is connected with one liquid outlet end of the liquid separator 7 through a pipeline;
part of the pipe body of the liquid filling inlet pipe 5 penetrates through the shell 1 and stretches into the liquid filling distribution pipe area 3, and a plurality of liquid outlet holes 51 are distributed on the pipe body of the liquid filling inlet pipe 5 stretching into the liquid filling distribution pipe area 3.
The liquid-full liquid inlet pipe 5 with the design can spray the refrigerant at different liquid levels, so that the refrigerant sprayed at the same time can be contacted with the liquid-full heat exchange tube bundle 31 with a wider range.
In this embodiment, the combined evaporator further includes a liquid level sensor 91, a spray refrigerant valve 92, and a flooded refrigerant valve 93;
a liquid level sensor 91 is mounted in the tubular interior, a spray refrigerant valve 92 is mounted on the piping between the spray header 42 and the dispenser 7, and a liquid-full refrigerant valve 93 is mounted on the piping between the liquid-full intake pipe 5 and the dispenser 7.
By means of the liquid level sensor 91, the refrigeration system in which the combined evaporator is located can control the refrigerant flow of the spray refrigerant valve 92 and the flooded refrigerant valve 93 in accordance with the refrigerant liquid level.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The combined evaporator comprises a shell with a tubular inner cavity, and is characterized in that the tubular inner cavity is divided into an upper falling film pipe distribution area and a lower liquid filling pipe distribution area;
the falling film tube distribution area is provided with falling film evaporation tube bundles and spraying assemblies, the falling film evaporation tube bundles are distributed in a trapezoid shape, each spraying assembly comprises a spraying plate, the semi-arc spraying plate covers the upper part of the trapezoid shape, and a plurality of nozzles are uniformly distributed on the bottom surface of the spraying plate;
the liquid-filling distribution pipe area is provided with a liquid-filling heat exchange pipe bundle and a liquid-filling liquid inlet pipe;
the top of the shell is provided with an exhaust port.
2. The combination evaporator of claim 1, further comprising a liquid separator, said liquid separator being located outside said housing, said liquid separator having a liquid inlet end connected to a refrigerant inlet tube, said liquid separator having two liquid outlet ends, one of said liquid outlet ends being connected to said spray assembly and the other liquid outlet end being connected to said liquid full inlet tube.
3. The modular evaporator of claim 2, wherein the spray assembly further comprises a spray header and a plurality of spray branches connected to the spray header, the spray header having a liquid inlet connected to a liquid outlet of the knockout via a conduit, each spray branch being connected to a plurality of nozzles;
the spray plate is characterized in that the spray branch pipes are arranged in the spray plate, strip-shaped protrusions are arranged at the top of the spray plate, and the spray header pipe is arranged in the strip-shaped protrusions.
4. The combined evaporator as set forth in claim 1, wherein said flooded cloth duct area is further provided with an oil and refrigerant mixed liquor recovery assembly;
the oil and refrigerant mixed liquid recovery assembly is provided with a plurality of liquid suction pipes positioned at different depths below the liquid level of the refrigerant, and a plurality of suction holes are distributed on the pipe body of the liquid suction pipe.
5. The combination evaporator as set forth in claim 4, wherein said oil and refrigerant mixture recovery assembly further comprises a suction tube extending in the same direction as said suction tube, one end of said suction tube being located in said tubular interior cavity and the other end being located outside said housing;
the liquid suction tube is characterized in that a liquid suction tube fixing plate is arranged in the liquid suction tube, a plurality of through holes are formed in the liquid suction tube fixing plate, and the liquid suction tubes are inserted into the through holes one by one to be fixed.
6. The combination evaporator as set forth in claim 5, wherein said suction pipes are provided with suction holes uniformly distributed on the pipe body inside the suction cylinder and the pipe body outside the suction cylinder.
7. The combined evaporator as set forth in claim 6, wherein said flooded inlet pipe and said oil-refrigerant mixture recovery unit are provided at both ends in the extending direction of said housing.
8. The combination evaporator as set forth in claim 2, wherein said flooded inlet pipe is closed at one end and connected at the other end to a liquid outlet end of said knockout via a conduit;
the part of the pipe body of the liquid filling inlet pipe penetrates through the shell and stretches into the liquid filling distribution pipe area, and a plurality of liquid outlet holes are distributed on the pipe body of the liquid filling inlet pipe which stretches into the liquid filling distribution pipe area.
9. The combination evaporator of claim 8, further comprising a liquid level sensor, a spray refrigerant valve, and a flooded refrigerant valve;
the liquid level sensor is arranged in the tubular inner cavity, the spraying refrigerant valve is arranged on a pipeline between the spraying main pipe and the liquid separator, and the liquid filling refrigerant valve is arranged on a pipeline between the liquid filling inlet pipe and the liquid separator.
10. A refrigeration apparatus, characterized in that a combined evaporator as claimed in any one of claims 1 to 9 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506004.8U CN220152988U (en) | 2023-06-13 | 2023-06-13 | Combined evaporator and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506004.8U CN220152988U (en) | 2023-06-13 | 2023-06-13 | Combined evaporator and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220152988U true CN220152988U (en) | 2023-12-08 |
Family
ID=89012200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321506004.8U Active CN220152988U (en) | 2023-06-13 | 2023-06-13 | Combined evaporator and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220152988U (en) |
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2023
- 2023-06-13 CN CN202321506004.8U patent/CN220152988U/en active Active
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