CN212538376U - Dual-purpose heat exchanger with air cooling and evaporation cooling functions - Google Patents
Dual-purpose heat exchanger with air cooling and evaporation cooling functions Download PDFInfo
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- CN212538376U CN212538376U CN202021018954.2U CN202021018954U CN212538376U CN 212538376 U CN212538376 U CN 212538376U CN 202021018954 U CN202021018954 U CN 202021018954U CN 212538376 U CN212538376 U CN 212538376U
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Abstract
The utility model discloses a dual-purpose heat exchanger with air cooling and evaporation cooling, which comprises a shell, wherein the lower part of the shell is provided with an air inlet, a plurality of dual-purpose heat exchange mechanisms are arranged in the shell side by side along the width direction, the top of the shell is provided with a fan, a spraying mechanism is arranged in the shell, and the spraying mechanism is positioned above the dual-purpose heat exchange mechanisms; the dual-purpose heat exchange mechanism comprises a first heat exchange mechanism and a second heat exchange mechanism, the first heat exchange mechanism comprises a plurality of first heat exchange tubes and fins, the plurality of first heat exchange tubes are sequentially arranged in the shell from top to bottom in parallel, the fins are sleeved on the outer sides of the first heat exchange tubes, the second heat exchange mechanism comprises a plurality of second heat exchange tubes, one end of each first heat exchange tube is communicated with the refrigerant gaseous medium collecting pipe, the other end of each first heat exchange tube is communicated with one end of the corresponding second heat exchange tube, the other end of each second heat exchange tube is communicated with the refrigerant liquid medium collecting pipe, and the spraying mechanism is located right above the second heat exchange.
Description
Technical Field
The utility model relates to a heat exchanger technical field, concretely relates to have air-cooled and cold dual-purpose type heat exchanger of evaporation concurrently.
Background
The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and is also called as a heat exchanger, the heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and the heat exchanger can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like when in use.
The commonly used heat exchanger comprises an air-cooled heat exchanger and an evaporative cooler, the structure of the air-cooled heat exchanger is shown in figure 1, metal fins are sleeved outside a plurality of rows of metal tubes, and fluid in the metal tubes and air outside the metal tubes exchange heat; the evaporative cooler is structured as shown in fig. 2, wherein two ends of a plurality of metal coils are connected with a header, water is sprayed outside the metal coils, air flows through the metal coils, and media in the metal coils are cooled. When the air-cooled heat exchanger is actually used, the surface heat transfer coefficient of the air-cooled heat exchanger is low, media on two sides of the heat exchange tube have large temperature difference during work, and when the air-cooled heat exchanger is used for a refrigerating unit and a heat pump unit, the unit efficiency is very low; evaporative condensers have a very low heat transfer coefficient when only air passes without using spray water, and can only be used as condensers of refrigeration units, but not as evaporators for absorbing heat from air.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the above-mentioned background art, the utility model aims to provide a have air-cooled and evaporation cold dual-purpose type heat exchanger concurrently, it has realized two kinds of heat exchange modes, does not need extra pipeline and valve to switch, all realizes the highest efficiency under refrigeration and heating mode, can be applicable to refrigerating unit and heat pump set simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a dual-purpose heat exchanger with air cooling and evaporative cooling, which comprises a shell, a refrigerant gaseous medium collecting pipe, a spraying mechanism, a fan, a dual-purpose heat exchange mechanism and a refrigerant liquid medium collecting pipe, wherein the lower part of the shell is provided with an air inlet;
dual-purpose type heat transfer mechanism includes first heat transfer mechanism and second heat transfer mechanism, first heat transfer mechanism includes a plurality of first heat exchange tubes and fin, and is a plurality of first heat exchange tube is from last to being in parallel arrangement down in proper order in the casing, first heat exchange tube outside cover is equipped with the fin, second heat transfer mechanism includes a plurality of second heat exchange tubes, first heat exchange tube one end with refrigerant gaseous state medium collector is linked together, the first heat exchange tube other end respectively with corresponding second heat exchange tube one end is linked together, the second heat exchange tube other end with refrigerant liquid state medium collector is linked together, it is located to spray the mechanism directly over the second heat exchange tube.
The further improvement is that the second heat exchange tube is of an S-shaped disc structure.
The further technical effect lies in that, through setting up the second heat exchange tube, reducible its area occupied increases its heat transfer area for its area of contact with shower water and air is bigger, has improved heat transfer effect.
The improved water distributor is characterized in that the spraying mechanism comprises a water collecting tank, a circulating water pump and a water distributor, the water distributor is located right above the second heat exchange tube, the water collecting tank is located below the second heat exchange tube, the water collecting tank is communicated with the water distributor through the circulating water pump, and a plurality of nozzles are uniformly arranged on one end of the water distributor, facing towards the second heat exchange tube.
The dual-purpose heat exchanger has the advantages that when the dual-purpose heat exchanger is used as a condenser of a refrigerating unit, water is sprayed to the outer surface of the second heat exchange tube through the spraying mechanism, forced ventilation is achieved through the fan, the water in the water collecting tank is pumped to the water distributor through the circulating water pump, the water is sprayed through the nozzles on the water distributor, a layer of water film is formed on the surface of the second heat exchange tube, heat exchange is conducted with a refrigerant medium in the second heat exchange tube, the water is evaporated and absorbed continuously, air is sucked by the fan and flows through the second heat exchange tube in a countercurrent or concurrent mode with the sprayed water, air-water interstitial heat transfer is formed, heat is taken away by the air, and the air.
The improved water tank has the further improvement that a packing layer is arranged between the second heat exchange tube and the water tank, and a drain valve is arranged at the bottom of the water tank.
Further technical effect lies in, through the purpose that sets up the packing layer increase the heat dissipation capacity: the filler is used for prolonging the retention time of the spray water and increasing the heat dissipation area of the spray water, the air entering through the air inlet enables the spray water to evaporate, the temperature of the spray water is reduced, the heat exchange temperature difference between the spray water and the heat exchanger is increased, and therefore the heat exchange quantity of the heat exchanger is increased.
The improvement is that a dehydrator is arranged between the fan and the water separator.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a when dual-purpose type heat exchanger is used for refrigeration air conditioning unit, both can be used as evaporative condenser when refrigerating the operation, also can be used as air source heat exchanger when the heat pump operation, when refrigerating the operation, spray water and adopt fan forced draft to the second heat exchange tube surface through spray mechanism, the refrigerant gaseous state medium in first heat exchange tube and the second heat exchange tube is exothermic and condenses into refrigerant liquid medium, the heat that first heat exchange tube emitted is passed through the fin on the first heat exchange tube to the air in the casing, the spray water absorbs the heat that the second heat exchange tube emitted, water absorbs heat constantly and evaporates and gasifies to vapor, discharge the casing through the fan, increase the heat transfer volume; when the refrigerating unit is switched to the heat pump working mode, the spraying device stops working, the shell is only forcibly ventilated by the fan, heat exchange between external air and a refrigerant in the tube is realized through the surfaces of the fins, the first heat exchange tube and the second heat exchange tube, and the refrigerant is evaporated into gas from liquid, so that the functions required by the heat pump unit are realized.
The utility model provides a dual-purpose type heat exchanger has realized two kinds of heat exchange modes, does not need extra pipeline and valve to switch, all realizes the highest efficiency under refrigeration and the mode of heating, can be applicable to refrigerating unit and heat pump set simultaneously.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of a prior art air-cooled heat exchanger;
FIG. 2 is a schematic diagram of an evaporative cooler of the prior art;
fig. 3 is a schematic view of the overall structure of the dual-purpose heat exchanger with both air cooling and evaporation cooling according to the present invention;
FIG. 4 is a perspective view of the heat exchange mechanism of the dual-purpose type;
FIG. 5 is a front view of the heat exchange mechanism of the dual-purpose type;
FIG. 6 is a schematic structural view of the two dual-purpose heat exchange mechanisms of the present invention when they are used in combination;
wherein, the specific reference numbers are: the device comprises a shell 1, a refrigerant gaseous medium collecting pipe 2, a water collecting tank 3, a drain valve 4, a circulating water pump 5, a water separator 6, a dehydrator 7, a packing layer 8, a fan 9, an air inlet 10, a first heat exchange mechanism 11, a first heat exchange pipe 12, fins 13, a second heat exchange mechanism 14, a second heat exchange pipe 15 and a refrigerant liquid medium collecting pipe 16.
Detailed Description
The embodiment of the utility model discloses a have dual-purpose type heat exchanger of forced air cooling and evaporation cold concurrently, as shown in fig. 3 to fig. 6, including casing 1, refrigerant gaseous state medium collector 2, spray mechanism, fan 9, dual-purpose type heat transfer mechanism and refrigerant liquid state medium collector 16, air inlet 10 has been seted up to casing 1 lower part, be provided with a plurality of dual-purpose type heat transfer mechanisms along the width direction side by side in the casing 1, in this embodiment, be provided with two dual-purpose type heat transfer mechanisms in the casing 1, casing 1 top is equipped with fan 9, be equipped with spray mechanism in the casing 1, spray mechanism is located dual-purpose type heat transfer mechanism top; the dual-purpose heat exchange mechanism comprises a first heat exchange mechanism 11 and a second heat exchange mechanism 14, the first heat exchange mechanism 11 comprises a plurality of first heat exchange tubes 12 and fins 13, the first heat exchange tubes 12 are sequentially arranged in the shell 1 in parallel from top to bottom, the fins 13 are sleeved on the outer sides of the first heat exchange tubes 12, the second heat exchange mechanism 14 comprises a plurality of second heat exchange tubes 15, one ends of the first heat exchange tubes 12 are communicated with the refrigerant gaseous medium header 2, the other ends of the first heat exchange tubes 12 are respectively communicated with one ends of the corresponding second heat exchange tubes 15, the other ends of the second heat exchange tubes 15 are communicated with the refrigerant liquid medium header 16, and the spraying mechanism is located right above the second heat exchange tubes 15. The dual-purpose heat exchanger realizes two heat exchange modes, does not need additional pipelines and valves for switching, realizes the highest efficiency in both the refrigerating mode and the heating mode, and can be simultaneously suitable for a refrigerating unit and a heat pump unit; when the dual-purpose heat exchanger is used for a refrigeration air conditioning unit, the dual-purpose heat exchanger can be used as an evaporative condenser during refrigeration operation, and can also be used as an air source heat exchanger during heat pump operation, during refrigeration operation, water is sprayed to the outer surface of the second heat exchange tube 15 through the spraying mechanism, the fan 9 is adopted for forced ventilation, refrigerant media in the first heat exchange tube 12 and the second heat exchange tube 15 release heat and are condensed into liquid, heat emitted by the first heat exchange tube 12 is transmitted to air in the shell 1 through the fins 13 on the first heat release tube, the water absorbs heat emitted by the second heat exchange tube 15, the water continuously absorbs heat and is evaporated into water vapor, the water vapor is discharged out of the shell 1 through the fan 9, and the heat; when the refrigerating unit is switched to the heat pump working mode, the spraying device stops working, the shell 1 is only forcibly ventilated by the fan 9, heat exchange between external air and a refrigerant in the shell is realized through the surfaces of the fins 13, the first heat exchange tube 12 and the second heat exchange tube 15, the refrigerant is evaporated into gas from liquid, and functions required by the heat pump unit are realized.
Wherein, second heat exchange tube 15 is S type disk structure, through setting up second heat exchange tube 15, reducible its occupation space increases its heat transfer area for its area of contact with shower water and air is bigger, has improved the heat transfer effect.
Wherein, the spraying mechanism comprises a water collecting tank 3, a circulating water pump 5 and a water separator 6, the water separator 6 is positioned right above the second heat exchange tube 15, the water collecting tank 3 is positioned below the second heat exchange tube 15, the water collecting tank 3 is communicated with the water separator 6 through the circulating water pump 5, one end of the water separator 6 facing the second heat exchange tube 15 is uniformly provided with a plurality of nozzles, when the dual-purpose heat exchanger is used as a condenser of a refrigerating unit in the embodiment, water is sprayed to the outer surface of the second heat exchange tube 15 through the spraying mechanism and is forced to ventilate by a fan 9, the circulating water pump 5 pumps the water in the water collecting tank 3 to the water separator 6, the water is sprayed through the nozzles on the water separator 6, a layer of water film is formed on the surface of the second heat exchange tube 15 to exchange heat with a refrigerant medium in the second heat exchange tube 15, the water is evaporated to absorb heat, the fan 9 pumps air, the air-water interstitial heat transfer is formed, the heat is taken away by the air and is discharged out of the shell 1 through the fan 9, and the operation is stable and reliable.
Wherein, a packing layer 8 is arranged between the second heat exchange tube 15 and the water collecting tank 3, and a drain valve 4 is arranged at the bottom of the water collecting tank 3. Because the shower water can be used circularly during the work, the purpose through setting up packing layer 8 is to increase the heat dissipation: the filler is used for prolonging the retention time of the spray water and increasing the heat dissipation area of the spray water, and the air entering through the air inlet 10 evaporates the spray water, so that the temperature of the spray water is reduced, the heat exchange temperature difference between the spray water and the heat exchanger is increased, and the heat exchange quantity of the heat exchanger is increased.
Wherein, a dehydrator 7 is arranged between the fan 9 and the water separator 6.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (5)
1. The dual-purpose heat exchanger with air cooling and evaporative cooling is characterized by comprising a shell, a refrigerant gaseous medium collecting pipe, a spraying mechanism, a fan, a dual-purpose heat exchange mechanism and a refrigerant liquid medium collecting pipe, wherein the lower part of the shell is provided with an air inlet;
dual-purpose type heat transfer mechanism includes first heat transfer mechanism and second heat transfer mechanism, first heat transfer mechanism includes a plurality of first heat exchange tubes and fin, and is a plurality of first heat exchange tube is from last to being in parallel arrangement down in proper order in the casing, first heat exchange tube outside cover is equipped with the fin, second heat transfer mechanism includes a plurality of second heat exchange tubes, first heat exchange tube one end with refrigerant gaseous state medium collector is linked together, the first heat exchange tube other end respectively with corresponding second heat exchange tube one end is linked together, the second heat exchange tube other end with refrigerant liquid state medium collector is linked together, it is located to spray the mechanism directly over the second heat exchange tube.
2. The dual-purpose heat exchanger with both air cooling and evaporative cooling as recited in claim 1, wherein said second heat exchange tubes are of S-shaped disc configuration.
3. The dual-purpose heat exchanger with air cooling and evaporative cooling as claimed in claim 2, wherein the spraying mechanism comprises a water collecting tank, a circulating water pump and a water separator, the water separator is located right above the second heat exchange tube, the water collecting tank is located below the second heat exchange tube, the water collecting tank is communicated with the water separator through the circulating water pump, and a plurality of nozzles are uniformly arranged on the water separator towards one end of the second heat exchange tube.
4. The dual-purpose heat exchanger with both air cooling and evaporative cooling as claimed in claim 3, wherein a packing layer is provided between the second heat exchange tube and the water collection tank, and a drain valve is provided at the bottom of the water collection tank.
5. The dual-purpose heat exchanger with both air cooling and evaporative cooling as claimed in claim 3, wherein a water trap is provided between the fan and the water trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021018954.2U CN212538376U (en) | 2020-06-05 | 2020-06-05 | Dual-purpose heat exchanger with air cooling and evaporation cooling functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021018954.2U CN212538376U (en) | 2020-06-05 | 2020-06-05 | Dual-purpose heat exchanger with air cooling and evaporation cooling functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212538376U true CN212538376U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021018954.2U Active CN212538376U (en) | 2020-06-05 | 2020-06-05 | Dual-purpose heat exchanger with air cooling and evaporation cooling functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212538376U (en) |
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2020
- 2020-06-05 CN CN202021018954.2U patent/CN212538376U/en active Active
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