CN210107818U - Shell and tube condenser and refrigerating system thereof - Google Patents
Shell and tube condenser and refrigerating system thereof Download PDFInfo
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- CN210107818U CN210107818U CN201920785148.9U CN201920785148U CN210107818U CN 210107818 U CN210107818 U CN 210107818U CN 201920785148 U CN201920785148 U CN 201920785148U CN 210107818 U CN210107818 U CN 210107818U
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Abstract
The utility model provides a shell and tube condenser and refrigerating system thereof, shell and tube condenser includes: the device comprises a shell, a first inlet and a first outlet, wherein the first inlet and the first outlet are arranged along the radial direction of the shell; the condensation tube bundle is arranged in the cavity and is close to the first inlet; the heat recovery tube bank comprises a tube body arranged in a cavity, a second inlet and a second outlet which are arranged outside a shell, wherein the tube body is close to the first outlet, a second refrigerating medium flows in the tube body, the temperature of the tube body is lower than that of the first refrigerating medium after heat exchange with the condensation tube bank, the first refrigerating medium after heat exchange with the condensation tube bank flows out of the first outlet after heat exchange with the second refrigerating medium through the tube body, and the second refrigerating medium flows out of the second outlet and enters the heat recovery device. The shell-and-tube condenser enables the supercooling degree of the first refrigerating medium flowing out of the first outlet to be larger, improves the stability of a refrigerating system, and meanwhile improves the utilization rate of heat of the first refrigerating medium.
Description
Technical Field
The utility model relates to an air conditioner refrigeration technology field, concretely relates to shell and tube condenser and refrigerating system thereof.
Background
The water chilling unit generally adopts a shell-and-tube condenser, which comprises a shell, a first tube plate, a second tube plate, a first cavity, a second cavity and a plurality of condensation tube bundles, wherein a refrigerant inlet and a refrigerant outlet are formed in the shell, when the shell is horizontally placed, the refrigerant inlet is formed in the upper end of the shell, the refrigerant outlet is formed in the lower end of the shell, the first tube plate and the second tube plate are respectively fixed at the left end and the right end of the shell, the first cavity is fixed on the first tube plate, the second cavity is fixed on the second tube plate, the second cavity is divided into an upper cavity and a lower cavity through a partition plate, the condensation tube bundles are fixed in the shell, the two ends of each condensation tube bundle are respectively fixed on the first tube plate and the second tube plate, the condensation tube bundles are communicated with the first cavity, the upper cavity and the lower cavity, the upper. Cooling water sequentially passes through the upper cavity, the condensation tube bundle, the first cavity, the other condensation tube bundle, the lower cavity and the cooling water outlet from the cooling water inlet, namely the cooling water circulates in the tubes of the condensation tube bundle and the cooling water flows away from the tube pass; and the refrigerant flows from top to bottom through the outside of the condensing tube bundle after entering from the refrigerant inlet and finally flows out from the refrigerant outlet, namely the refrigerant flows away from the shell pass.
The refrigerant is gas when entering the shell from the refrigerant inlet, the gas enters the shell and exchanges heat with cooling water in the condensation tube bundle to be changed into liquid, and the liquid flows out from the refrigerant outlet. When the liquid refrigerant flows out from the refrigerant outlet, the supercooling degree of the refrigerant is not high, the liquid refrigerant needs to pass through the throttling valve firstly when flowing to the throttling device through the pipeline, the flash evaporation phenomenon of the liquid refrigerant is easy to occur on the pipeline between the throttling valve and the refrigerant outlet due to pipeline resistance, and the gas generated by the flash evaporation can reduce the running stability of the throttling device, so that the stability of the refrigerating system is reduced. In the prior art, in order to improve the supercooling degree of the refrigerant at the refrigerant outlet, the supercooling degree of the refrigerant at the refrigerant outlet is generally improved by increasing the amount of the refrigerant to increase the condensing temperature. Although the stability of the refrigerating system is improved, the liquid refrigerant carries a large amount of heat when flowing out of the refrigerant outlet because the heat recovery is not carried out at the refrigerant outlet, and the heat brought by the liquid refrigerant cannot be reused when the liquid refrigerant passes through the throttling device, so that the loss of a large amount of heat of the refrigerant in the condenser is easily caused, and the heat utilization rate is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the condenser among the prior art when improving the super-cooled rate of condensing agent in the condenser export, easily causes the defect that the heat utilization rate of refrigerant is low to a shell and tube condenser and refrigerating system are provided.
In order to solve the technical problem, on the one hand, the utility model provides a shell and tube condenser, include: the refrigerator comprises a shell, a first refrigerating medium and a second refrigerating medium, wherein a cavity for circulating the first refrigerating medium is formed inside the shell, a first inlet and a first outlet are arranged along the radial direction of the shell, and the first inlet is communicated with the first outlet through the cavity;
the condensation tube bundle is arranged in the cavity and close to the first inlet, a cooling medium flows through the condensation tube bundle, a first refrigerating medium flows through the outside of the condensation tube bundle, and the first refrigerating medium exchanges heat with the cooling medium through the condensation tube bundle;
the heat recovery tube bundle comprises a tube body arranged in the cavity, and a second inlet and a second outlet which are arranged outside the shell, wherein the tube body is close to the first outlet, a second refrigerating medium flows in the tube body, the temperature of the tube body is lower than that of the first refrigerating medium subjected to heat exchange with the condensation tube bundle, the first refrigerating medium subjected to heat exchange with the condensation tube bundle flows out of the first outlet after passing through the heat exchange between the tube body and the second refrigerating medium, and the second refrigerating medium flows out of the second outlet and enters the heat recovery device.
Optionally, the refrigeration system further comprises a supercooling plate arranged between the condensation tube bundle and the heat recovery tube bundle, a flow guide opening is formed between the side face, away from the first outlet, of the supercooling plate and the side wall of the shell along the length direction of the shell, and other side faces of the supercooling plate are connected with other side walls of the shell, so that a first refrigeration medium subjected to heat exchange with the condensation tube bundle flows out of the flow guide opening and then is subjected to heat exchange with a second refrigeration medium through the tube body.
Optionally, one end of the pipe body is close to the diversion port, and the other end of the pipe body is close to the first outlet.
Optionally, the supercooling plate is arranged in parallel with a condensation tube bundle adjacent to the supercooling plate at a spacing, and the supercooling plate is arranged in parallel with the heat recovery tube bundle at a spacing.
Optionally, a plurality of baffles are arranged on the heat recovery tube bundle at intervals, and the plurality of baffles are used for increasing the flow speed of the first refrigerant flow from the flow guide opening to the first outlet.
Optionally, a part of the baffle plate is connected with the supercooling plate and forms a first gap with the side wall of the shell, another part of the baffle plate is connected with the side wall of the shell and forms a second gap with the supercooling plate, and the first gap and the second gap are arranged in a staggered manner.
In another aspect, the present invention provides a refrigeration system, including:
the shell-and-tube condenser described above;
the first outlet of the shell-and-tube condenser is communicated with the inlet of the evaporator through a fourth pipeline;
the second throttling device is arranged on the fourth pipeline;
and the outlet of the evaporator is communicated with the inlet of the compressor through a fifth pipeline, and the first inlet of the condenser is communicated with the outlet of the compressor through a sixth pipeline.
Optionally, the heat recovery device comprises:
a first compressor through the inlet of which a second refrigerant enters, the second outlet of the heat recovery tube bank being in communication with the inlet of the first compressor through a first conduit;
the heat recovery condenser comprises a shell, the shell is provided with a third inlet and a third outlet, the outlet of the first compressor is communicated with the third inlet through the second pipeline, the third outlet is communicated with the second inlet of the heat recovery tube bundle through a third pipeline, and a second refrigerating medium enters the third pipeline after heat exchange is carried out in the heat recovery condenser;
and the first throttling device is arranged on the third pipeline, and a second refrigerating medium enters the second inlet after being subjected to pressure reduction through the first throttling device.
Optionally, a partition plate is arranged inside the shell, the partition plate divides the shell into a refrigeration area and a heat recovery area, the third inlet and the third outlet are arranged in the refrigeration area, and a second refrigeration medium flows out from the third outlet after heat exchange between the refrigeration area and the heat recovery area.
Optionally, the heat recovery zone is provided with a fourth inlet and a fourth outlet, and the heat-carrying medium enters the heat recovery zone through the fourth inlet and flows out of the fourth outlet after exchanging heat with the second refrigeration medium in the refrigeration zone.
Optionally, the fourth inlet is adjacent to the third outlet, and the fourth outlet is adjacent to the third inlet.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a shell and tube condenser, including casing, condensation tube bank, crosses cold drawing and heat recovery tube bank, the casing is inside to be formed with the cavity that supplies the circulation of first refrigeration medium, is provided with first import and first export on the casing, and first import is through cavity and first export intercommunication, namely, first refrigeration medium can flow out from first export after getting into the cavity through first import; the condensation tube bank sets up in the cavity and is close to first import, and the inside circulation of condensation tube bank has coolant, and the outside circulation of condensation tube bank has first refrigerant, and first refrigerant carries out the heat exchange through condensation tube bank and coolant, makes gaseous first refrigerant become liquid first refrigerant after with the coolant heat exchange.
The heat recovery tube bundle comprises a tube body arranged in the cavity, and a second inlet and a second outlet which are arranged outside the shell, the tube body is close to the first outlet, a second refrigerating medium enters the tube body through the second inlet, so that the first refrigerating medium which is changed into a liquid state after being subjected to heat exchange with the condensation tube bundle can be subjected to heat exchange with the second refrigerating medium through the tube body and then flows out of the first outlet, and as the temperature of the first refrigerating medium at the moment is higher than that of the tube body, the heat of the liquid first refrigerating medium is absorbed by the second refrigerating medium, the temperature of the liquid first refrigerating medium is reduced, the supercooling degree of the first refrigerating medium which flows out of the first outlet is larger, and the stability of the refrigerating system is improved; meanwhile, the second refrigerating medium in the pipe body exchanges heat with the first refrigerating medium and then flows out of the second outlet and enters the heat recovery device, and the heat recovery device reuses the heat absorbed by the second refrigerating medium, so that the utilization rate of the heat of the first refrigerating medium is improved, and the energy waste is reduced.
2. The utility model provides a shell and tube condenser, the supercooling board sets up in the cavity and lies in between condensation tube bank and the heat recovery tube bank, along the length direction of casing, the side that the supercooling board kept away from first export forms the water conservancy diversion mouth with the lateral wall of casing, other sides of crossing the supercooling board all are connected with other lateral walls of casing, liquid first refrigerating medium flows to the supercooling board from the condensation tube bank outside, because other sides of crossing the supercooling board all are connected with other lateral walls of casing, make liquid first refrigerating medium can only flow out from the water conservancy diversion mouth, and the water conservancy diversion mouth keeps away from first export, make liquid first refrigerating medium who flows out from the water conservancy diversion mouth can reach first export only through certain stroke in the casing, and then increased the contact time and the area of contact of first refrigerating medium and body, promote the heat exchange rate of first refrigerating medium and body, make more heats of first refrigerating medium absorbed by the second refrigerating medium, the supercooling degree of the first refrigerant flowing out of the first outlet is further reduced, and the utilization rate of the heat of the refrigerant is further improved.
3. The utility model provides a shell and tube condenser, the one end of body is close to the water conservancy diversion mouth, and the other end is close to first export, and the contact stroke of multiplicable liquid first refrigeration medium and body like this, and then make the contact time and the total area of contact of liquid first refrigeration medium and second refrigeration medium, improve the heat exchange capacity of liquid first refrigeration medium and second refrigeration medium.
4. The utility model provides a shell and tube condenser, the supercooling board and the condensing tube bundle near the supercooling board are arranged in parallel at intervals, which can increase the flow velocity of the liquid first refrigeration medium on the supercooling board, and make the first refrigeration medium flow to the diversion port quickly; the cold plate and the heat recovery tube bundle are arranged at intervals in parallel, so that the flow velocity of the first refrigerating medium flowing to the first outlet can be increased, meanwhile, the contact area of the first refrigerating medium and the tube body is increased, and the heat exchange efficiency of the first refrigerating medium and the second refrigerating medium is increased.
5. The utility model provides a shell and tube condenser, the interval is provided with a plurality of baffling boards on the heat recovery tube bank, and some baffling boards are connected with the supercooling board and form first breach between the lateral wall of casing, and another part baffling board is connected with the lateral wall of casing and forms the second breach between the supercooling board, and first breach and the crisscross setting of second breach, multiplicable first refrigeration medium flow to the velocity of flow of first export from the water conservancy diversion mouth like this.
6. The utility model provides a refrigerating system, including as above shell and tube condenser, the evaporimeter, second throttling arrangement and second compressor, the evaporimeter evaporates its inside first refrigerant medium into gaseous entering second compressor, the second compressor compresses gaseous first refrigerant medium into high temperature high pressure gas, then the gaseous first refrigerant medium of high temperature carries out the heat exchange in high temperature and then the shell and tube condenser, gaseous first refrigerant medium becomes liquid first refrigerant medium after carrying out the heat exchange with the condensation tube bank, liquid first refrigerant medium flows to heat recovery tube bank through the effect of cold drawing, liquid first refrigerant medium carries out the heat exchange with heat recovery tube bank, make the temperature of liquid first refrigerant medium reduce, then flow to second throttling arrangement through first export, liquid first refrigerant medium throttles the step-down in second throttling arrangement, make the temperature of first refrigerant medium further reduce, finally, the refrigerant enters the evaporator, and is converted into steam through heat exchange in the evaporator to enter the second compressor again, so that a refrigeration cycle is formed; and the cooling medium in the condensation tube bundle is subjected to heat exchange with the first refrigeration medium and then leaves the condenser.
The refrigeration system can lead the first refrigeration medium in the shell-and-tube condenser to flow out from the first outlet by the heat recovery tube bundle and the heat recovery device, so that the supercooling degree is higher, and the stability of the refrigeration system is further improved; meanwhile, the heat recovery device can reuse heat in other settings after absorbing the heat of the first refrigerating medium through the second refrigerating medium, so that the heat utilization rate of the heat of the first refrigerating medium is improved.
7. The utility model provides a refrigerating system, its heat recovery unit includes first compressor, heat recovery condenser and first throttling arrangement, the second refrigerant gets into first compressor through the entry of first compressor, heat recovery condenser includes the shell, the shell is provided with third import and third export, the export of first compressor passes through the second pipeline and communicates with the third import, the third export communicates with the second import of heat recovery tube bank through the third pipeline, be provided with first throttling arrangement on the third pipeline, the second refrigerant in the first compressor gets into heat recovery condenser through the second pipeline, the second refrigerant gets into the third pipeline through the third export after carrying out the heat exchange in heat recovery condenser, when the second refrigerant passes through first throttling arrangement, first throttling arrangement throttles the decompression to the second refrigerant, make the temperature reduction of second refrigerant become low temperature state, the second refrigerating medium flows out from the second outlet after being cooled and exchanges heat with the first refrigerating medium in the pipe body, and the second refrigerating medium enters the first compressor again under the action of the first pipeline, so that a heat recovery cycle is formed between the heat recovery pipe bundle and the heat recovery device, and the heat of the liquid first refrigerating medium is recovered and reused.
8. The utility model provides a refrigerating system, the inside of shell is provided with the baffle, and the baffle separates the shell for refrigeration district and heat recovery district, and the second refrigerant gets into the refrigeration district from the third import and carries out the heat exchange with the heat recovery district after for the heat of second refrigerant is absorbed by the heat recovery district, then the second refrigerant flows out the throttling arrangement who gets into on the third pipeline from the third export again, carries out the heat recovery circulation next time.
9. The utility model provides a refrigerating system, heat recovery district are provided with fourth import and fourth export, and the heat-carrying agent gets into heat recovery district through the fourth import for the heat-carrying agent carries out indirect heat transfer through baffle and second refrigerant, and the heat-carrying agent flows from the fourth export after absorbing the heat of second refrigerant, in order to carry out reuse with absorbent heat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a shell-and-tube condenser provided in a first embodiment of the present invention;
fig. 2 is a schematic diagram of a refrigeration system provided in a second embodiment of the present invention.
Description of reference numerals:
1. a condenser tube bundle; 2. a housing; 21. a cavity; 22. a first inlet; 23. a first outlet; 24. a cooling inlet; 25. a cooling outlet; 3. an overcooling plate; 31. a flow guide port; 4. a heat recovery tube bundle; 41. a pipe body; 42. a second inlet; 43. a second outlet; 5. a first compressor; 6. a first conduit; 7. a heat recovery condenser; 71. a housing; 72. a third inlet; 73. a third outlet; 74. a partition plate; 75. a fourth inlet; 76. A fourth outlet; 77. a refrigeration zone; 78. a heat recovery zone; 8. a second conduit; 9. a third pipeline; 10. a first throttling device; 11. a baffle plate; 111. a first notch; 112. a second notch; 12. a shell-and-tube condenser; 13. an evaporator; 14. a second throttling device; 15. a second compressor; 16. a fourth conduit; 17. a fifth pipeline; 18. and a sixth pipeline.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example one
One embodiment of a shell and tube condenser, as shown in fig. 1, includes: the casing 2 is internally provided with a cavity 21 for circulating a first refrigerating medium, a first inlet 22 and a first outlet 23 are arranged along the radial direction of the casing 2, and the first inlet 22 is communicated with the first outlet 23 through the cavity 21. That is, the first refrigerant medium may flow out of the first outlet 23 after entering the cavity 21 through the first inlet 22.
Condensation tube bank 1, set up in cavity 21 and be close to first import 22, the inside circulation of condensation tube bank 1 has coolant, and the outside circulation of condensation tube bank 1 has first refrigerant, and first refrigerant carries out the heat exchange through condensation tube bank 1 and coolant, makes gaseous first refrigerant become liquid first refrigerant after with the coolant heat exchange.
The manner of entry and exit of the cooling medium into and out of the interior of the condenser tube bundle 1 is known in the art and can be introduced into the condenser tube bundle 1 in various ways known per se. For example, a separate cooling inlet 24 and a separate cooling outlet 25 are provided on the shell 2, the cooling inlet 24 and the cooling outlet 25 are provided on the same side of the tubes 41, the cooling inlet 24 and the cooling outlet 25 are respectively communicated with the condenser tube bundle 1, and the cooling medium passes through the cooling inlet 24, the condenser tube bundle 1 and the cooling outlet 25 in this order.
The heat recovery tube bundle 4 comprises a tube body 41 arranged in the cavity 21, and a second inlet 42 and a second outlet 43 which are arranged outside the shell 2, wherein the tube body 41 is close to the first outlet 23, a second refrigerating medium flows in the tube body 41, the temperature of the tube body 41 is lower than that of the first refrigerating medium after heat exchange with the condensation tube bundle 1, the first refrigerating medium after heat exchange with the condensation tube bundle 1 flows out of the first outlet 23 after heat exchange with the second refrigerating medium through the tube body 41, and the second refrigerating medium flows out of the second outlet 43 and enters the heat recovery device.
A second refrigeration medium enters the pipe body 41 through the second inlet 42, so that the first refrigeration medium which is changed into a liquid state after heat exchange with the condensation tube bundle 1 can exchange heat with the second refrigeration medium through the pipe body 41, and then the first refrigeration medium flows out from the first outlet 23, because the temperature of the first refrigeration medium at this time is higher than that of the pipe body 41, namely, the temperature of the first refrigeration medium is higher than that of the second refrigeration medium, at this time, the heat of the liquid first refrigeration medium is absorbed by the second refrigeration medium, the temperature of the liquid first refrigeration medium is reduced, and further, the supercooling degree of the first refrigeration medium which flows out from the first outlet 23 is larger, and the stability of the refrigeration system is improved; meanwhile, the second refrigeration medium in the pipe body 41 exchanges heat with the first refrigeration medium and then flows out of the second outlet 43 to enter the heat recovery device, and the heat recovery device reuses the heat absorbed by the second refrigeration medium, so that the utilization rate of the heat of the first refrigeration medium is improved, and the energy waste is reduced.
In the present embodiment, the cooling medium may be a coolant, the first refrigeration medium is a refrigerant, the second refrigeration medium is a refrigerant, and the second refrigeration medium is R134 a.
The shell-and-tube condenser 12 further comprises a supercooling plate 3 disposed between the condensation tube bundle 1 and the heat recovery tube bundle 4, whereby the supercooling plate 3 is disposed within the shell 2; along the length direction of casing 2, form water conservancy diversion mouth 31 between the side that supercooling plate 3 kept away from first export 23 and the lateral wall of casing 2, other sides of supercooling plate 3 all are connected with other lateral walls of casing 2, namely, along the circumference of cavity 21, supercooling plate keeps away from 3 side and cavity 21 chamber wall of first export 23 and does not connect, form water conservancy diversion mouth 31, other sides that supercooling plate kept away from 3 all with other chamber wall lug connections of cavity 21, make the first refrigerant after carrying out the heat exchange with condensation tube bank 1 flow out from water conservancy diversion mouth 31 after, through body 41 and the heat exchange of second refrigerant.
The liquid first refrigeration medium flows to the supercooling plate 3 from the outside of the condensation tube bundle 1, and other side surfaces of the supercooling plate 3 are connected with other side walls of the shell 2, so that the liquid first refrigeration medium can only flow out of the flow guide port 31, and the flow guide port 31 is far away from the first outlet 23, so that the liquid first refrigeration medium flowing out of the flow guide port 31 can reach the first outlet 23 only after a certain stroke in the shell 2, further the contact time and the contact area of the first refrigeration medium and the tube body 41 are increased, the heat exchange rate of the first refrigeration medium and the tube body 41 is improved, more heat of the first refrigeration medium is absorbed by the second refrigeration medium, the supercooling degree of the first refrigeration medium flowing out of the first outlet 23 is further reduced, and meanwhile, the heat utilization rate of the refrigerant is further improved.
It can be understood that the temperature of the supercooling plate 3 is not higher than the temperature of the first refrigerant medium after heat exchange with the condensation tube bundle 1.
As shown in fig. 1, one end of the tube 41 is close to the diversion opening 31, and the other end is close to the first outlet 23, so that the contact stroke of the liquid first refrigeration medium and the tube 41 can be increased, the contact time and the total contact area of the liquid first refrigeration medium and the second refrigeration medium can be further increased, and the heat exchange amount of the liquid first refrigeration medium and the second refrigeration medium can be increased.
As shown in fig. 1, the pipe 41 is a circulation pipeline in the cavity 21, the second inlet 42 and the second outlet 43 are two ports of the circulation pipeline, and the second inlet 42 and the second outlet 43 are both close to the diversion port 31. One end of the pipe 41 away from the second inlet 42 and the second outlet 43 may or may not abut against the side wall of the housing 2, however, one end of the pipe 41 away from the second inlet 42 and the second outlet 43 is located between the side wall of the housing 2 and the first outlet 23, that is, one end of the pipe 41 away from the second inlet 42 and the second outlet 43 is located above the first outlet 23 in the vertical direction, and the first outlet 23 extends toward the side wall of the pipe 41, and the side wall of the pipe 41 at this time is the side wall away from the diversion port 31.
As shown in fig. 1, the supercooling plate 3 is spaced from and parallel to the condensation tube bundle 1 close to the supercooling plate 3, so that the flow velocity of the liquid first refrigerant on the supercooling plate 3 can be increased, and the first refrigerant can rapidly flow to the diversion port 31. The cold plate 3 and the heat recovery tube bundle 4 are arranged at intervals in parallel, so that the flow velocity of the first refrigerating medium flowing to the first outlet 23 can be increased, meanwhile, the contact area of the first refrigerating medium and the tube body 41 is increased, and the heat exchange efficiency of the first refrigerating medium and the second refrigerating medium is further increased.
As shown in fig. 1, a plurality of baffles 11 are arranged at intervals on the heat recovery tube bundle 4, and the plurality of baffles 11 are used for increasing the flow velocity of the first refrigerant flow from the diversion opening 31 to the first outlet 23.
A part of the baffle plate 11 is connected with the supercooling plate 3 and forms a first gap 111 with the sidewall of the shell 2, the other part of the baffle plate 11 is connected with the sidewall of the shell 2 and forms a second gap 112 with the supercooling plate 3, and the first gap 111 and the second gap 112 are arranged in a staggered manner. This increases the flow rate of the first refrigerant medium from the diversion opening 31 to the first outlet 23.
Example two
As shown in fig. 1 and 2, the present invention provides a refrigeration system, including:
the shell-and-tube condenser 12 of the first embodiment;
an evaporator 13, a first outlet 23 of the shell-and-tube condenser 12 communicating with an inlet of the evaporator 13 through a fourth tube 16;
a second throttling device 14 arranged on the fourth duct 16;
a second compressor 15, the outlet of the evaporator 13 communicating with the inlet of the compressor through a fifth conduit 17, and the first inlet 22 of the condenser communicating with the outlet of the compressor through a sixth conduit 18.
The evaporator 13 evaporates a first refrigeration medium in the evaporator into gas, the gas enters the second compressor 15, the second compressor 15 compresses the first refrigeration medium into high-temperature high-pressure gas, then the high-temperature gas first refrigeration medium exchanges heat with the shell-and-tube condenser 12, the gas first refrigeration medium exchanges heat with the condensation tube bundle 1 to become a liquid first refrigeration medium, the liquid first refrigeration medium flows to the heat recovery tube bundle 4 through the action of the cold plate 3, the liquid first refrigeration medium exchanges heat with the heat recovery tube bundle 4 to reduce the temperature of the liquid first refrigeration medium, then flows to the second throttling device 14 through the first outlet 23, the liquid first refrigeration medium throttles and reduces the pressure in the second throttling device 14 to further reduce the temperature of the first refrigeration medium, finally enters the evaporator 13, the heat exchange is changed into steam, and the steam enters the second compressor 15 again, thereby forming a refrigeration cycle; and the cooling medium in the condensation tube bundle 1 is subjected to heat exchange with the first refrigeration medium and then leaves the condenser.
The refrigeration system can lead the first refrigeration medium in the shell-and-tube condenser 12 to flow out from the first outlet 23 with larger supercooling degree through the heat recovery tube bundle 4 and the heat recovery device, thereby improving the stability of the refrigeration system; meanwhile, the heat recovery device can reuse heat in other settings after absorbing the heat of the first refrigerating medium through the second refrigerating medium, so that the heat utilization rate of the heat of the first refrigerating medium is improved.
The temperature of the first refrigerant medium flowing out of the second compressor 15 is higher than the temperature of the second refrigerant medium flowing out of the first compressor 5. The temperature of the first refrigerating medium after heat exchange with the condensing tube bundle 1 and the temperature of the first refrigerating medium flowing out of the flow guide port 31 are both higher than the temperature of the second refrigerating medium; meanwhile, the temperature of the first refrigerant after heat exchange with the condensation tube bundle 1 and the temperature of the first refrigerant flowing out of the diversion port 31 are both higher than the temperature of the tube body 41. The temperature of the second refrigerant flowing out of the second outlet 43 is higher than the temperature of the second refrigerant in the pipe body 41, and the temperature of the second refrigerant flowing out of the second outlet 43 is higher than the temperature of the second refrigerant flowing in from the second inlet/outlet.
As shown in fig. 2, the heat recovery apparatus includes:
a first compressor 5, a second refrigerant medium entering the first compressor 5 through an inlet of the first compressor 5, and a second outlet 43 of the heat recovery tube bank 4 communicating with an inlet of the first compressor 5 through a first conduit 6.
The heat recovery condenser 7 comprises a shell 71, the shell 71 is provided with a third inlet 72 and a third outlet 73, the outlet of the first compressor 5 is communicated with the third inlet 72 through a second pipeline 8, the third outlet 73 is communicated with the second inlet 42 of the heat recovery tube bundle 4 through a third pipeline 9, and a second refrigerant enters the third pipeline 9 after heat exchange in the heat recovery condenser 7;
the first throttling device 10 is arranged on the third pipeline 9, and the second refrigerating medium enters the second inlet 42 after being depressurized by the first throttling device 10.
The second refrigerant in the first compressor 5 enters the heat recovery condenser 7 through the second pipeline 8, the second refrigerant enters the third pipeline 9 through the third outlet 73 after heat exchange in the heat recovery condenser 7, when the second refrigerant passes through the first throttling device 10, the first throttling device 10 throttles and reduces the pressure of the second refrigerant, so that the temperature of the second refrigerant is reduced to be in a low-temperature state, the second refrigerant flows out from the second outlet 43 after being cooled and exchanges heat with the first refrigerant in the pipe body 41, and enters the first compressor 5 again under the action of the first pipeline 6, and heat recovery circulation is formed between the heat recovery pipe bundle 4 and the heat recovery device in such a way, so that the heat of the liquid first refrigerant is recovered and reused.
As shown in fig. 2, a partition 74 is provided inside the casing 71, the partition 74 partitions the casing 71 into a cooling zone 77 and a heat recovery zone 78, a third inlet 72 and a third outlet 73 are provided in the cooling zone 77, and the second refrigerant flows out from the third outlet 73 after heat exchange between the cooling zone 77 and the heat recovery zone 78. The second refrigerant enters the cooling area 77 from the third inlet 72 and exchanges heat with the heat recovery area 78, so that the heat of the second refrigerant is absorbed by the heat recovery area 78, and then the second refrigerant flows out of the third outlet 73 and enters the throttling device on the third pipeline 9 to perform the next heat recovery cycle.
As shown in fig. 2, the heat recovery area 78 is provided with a fourth inlet 75 and a fourth outlet 76, and the heat carrier medium enters the heat recovery area 78 through the fourth inlet 75 and flows out of the fourth outlet 76 after exchanging heat with the second refrigerant medium in the refrigeration area 77. The heat-carrying medium enters the heat recovery zone 78 through the fourth inlet 75, so that the heat-carrying medium indirectly exchanges heat with the second refrigeration medium through the partition 74, absorbs heat of the second refrigeration medium, and then flows out from the fourth outlet 76 to reuse the absorbed heat; at the same time, the temperature of the second refrigerant medium is further lowered.
The heat transfer medium may be a heat transfer agent.
As shown in fig. 2, the fourth inlet 75 is close to the third outlet 73, and the fourth outlet 76 is close to the third inlet 72, so that convection can be formed between the second refrigerant and the heat carrier, heat exchange between the second refrigerant and the heat carrier is facilitated, and the efficiency of heat exchange can be improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A shell and tube condenser, comprising:
the refrigerator comprises a shell (2), wherein a cavity (21) for circulating a first refrigerating medium is formed inside the shell (2), a first inlet (22) and a first outlet (23) are arranged along the radial direction of the shell (2), and the first inlet (22) is communicated with the first outlet (23) through the cavity (21);
the condensation tube bundle (1) is arranged in the cavity (21) and is close to the first inlet (22), a cooling medium flows inside the condensation tube bundle (1), a first refrigerating medium flows outside the condensation tube bundle (1), and the first refrigerating medium exchanges heat with the cooling medium through the condensation tube bundle (1);
the heat recovery tube bundle (4) comprises a tube body (41) arranged in the cavity (21), and a second inlet (42) and a second outlet (43) which are arranged outside the shell (2), wherein the tube body (41) is close to the first outlet (23), a second refrigerating medium flows in the tube body (41), the temperature of the tube body (41) is lower than that of the first refrigerating medium after heat exchange with the condensation tube bundle (1), the first refrigerating medium after heat exchange with the condensation tube bundle (1) flows out of the first outlet (23) after heat exchange with the second refrigerating medium through the tube body (41), and the second refrigerating medium flows out of the second outlet (43) and enters a heat recovery device.
2. The shell-and-tube condenser according to claim 1, further comprising an overcooling plate (3) disposed between the condensation tube bundle (1) and the heat recovery tube bundle (4), wherein a diversion port (31) is formed between the side of the overcooling plate (3) away from the first outlet (23) and the side wall of the shell (2) along the length direction of the shell (2), and other sides of the overcooling plate (3) are connected with other side walls of the shell (2), so that the first refrigerant after heat exchange with the condensation tube bundle (1) flows out of the diversion port (31) and exchanges heat with the second refrigerant through the tubes (41).
3. The shell-and-tube condenser according to claim 2, characterized in that the tube body (41) has one end near the flow guide opening (31) and the other end near the first outlet opening (23).
4. The shell-and-tube condenser according to claim 2 or 3, characterized in that the supercooling plates (3) are arranged parallel spaced to the condensation tube bundle (1) adjacent to the supercooling plates (3), and the supercooling plates (3) are arranged parallel spaced to the heat recovery tube bundle (4).
5. The shell-and-tube condenser according to claim 4, characterized in that a plurality of baffles (11) are arranged at intervals on the heat recovery tube bundle (4), the plurality of baffles (11) being adapted to increase the flow rate of the first refrigerant flow from the flow guide opening (31) to the first outlet opening (23).
6. The shell-and-tube condenser according to claim 5, wherein a part of the baffles (11) are connected to the supercooling plate (3) and form a first gap (111) with the sidewall of the shell (2), and another part of the baffles (11) are connected to the sidewall of the shell (2) and form a second gap (112) with the supercooling plate (3), and the first gap (111) and the second gap (112) are alternately arranged.
7. A refrigeration system, comprising:
the shell-and-tube condenser (12) of any one of claims 1 to 6;
an evaporator (13), the first outlet (23) of the shell-and-tube condenser (12) communicating with the inlet of the evaporator (13) through a fourth conduit (16);
-second throttling means (14) arranged on said fourth duct (16);
a second compressor (15), the outlet of the evaporator (13) being in communication with the inlet of the compressor via a fifth conduit, the first inlet (22) of the condenser being in communication with the outlet of the compressor via a sixth conduit.
8. The refrigeration system of claim 7, wherein the heat recovery device comprises:
a first compressor (5), a second refrigeration medium entering the first compressor (5) through an inlet of the first compressor (5), the second outlet (43) of the heat recovery tube bundle (4) communicating with an inlet of the first compressor (5) through a first conduit (6);
the heat recovery condenser (7) comprises a shell (71), the shell (71) is provided with a third inlet (72) and a third outlet (73), the outlet of the first compressor (5) is communicated with the third inlet (72) through a second pipeline (8), the third outlet (73) is communicated with the second inlet (42) of the heat recovery tube bundle (4) through a third pipeline (9), and a second refrigeration medium enters the third pipeline (9) after heat exchange in the heat recovery condenser (7);
the first throttling device (10) is arranged on the third pipeline (9), and the second refrigerating medium enters the second inlet (42) after being depressurized through the first throttling device (10).
9. A refrigeration system according to claim 8, characterized in that a partition (74) is arranged inside the housing (71), said partition (74) dividing the housing (71) into a refrigeration zone (77) and a heat recovery zone (78), said third inlet (72) and third outlet (73) being arranged in said refrigeration zone (77), the second refrigerant medium flowing out of said third outlet (73) after heat exchange between the refrigeration zone (77) and the heat recovery zone (78).
10. A refrigeration system according to claim 9, characterized in that the heat recovery zone (78) is provided with a fourth inlet (75) and a fourth outlet (76), and that the heat carrier medium enters the heat recovery zone (78) through the fourth inlet (75) and flows out of the fourth outlet (76) after heat exchange with the second refrigeration medium in the refrigeration zone (77).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785148.9U CN210107818U (en) | 2019-05-28 | 2019-05-28 | Shell and tube condenser and refrigerating system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785148.9U CN210107818U (en) | 2019-05-28 | 2019-05-28 | Shell and tube condenser and refrigerating system thereof |
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| CN210107818U true CN210107818U (en) | 2020-02-21 |
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| CN201920785148.9U Active CN210107818U (en) | 2019-05-28 | 2019-05-28 | Shell and tube condenser and refrigerating system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068174A (en) * | 2019-05-28 | 2019-07-30 | 苏州必信空调有限公司 | A kind of shell and tube condenser and its refrigeration system |
| CN112179185A (en) * | 2020-09-29 | 2021-01-05 | 清华大学 | Composite enhanced heat transfer double-channel heat exchange unit and heat exchanger thereof |
| CN113310250A (en) * | 2021-05-31 | 2021-08-27 | 威玛自动化设备常熟有限公司 | Tubular heat exchanger for food production |
-
2019
- 2019-05-28 CN CN201920785148.9U patent/CN210107818U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068174A (en) * | 2019-05-28 | 2019-07-30 | 苏州必信空调有限公司 | A kind of shell and tube condenser and its refrigeration system |
| CN112179185A (en) * | 2020-09-29 | 2021-01-05 | 清华大学 | Composite enhanced heat transfer double-channel heat exchange unit and heat exchanger thereof |
| CN112179185B (en) * | 2020-09-29 | 2021-11-19 | 清华大学 | Composite enhanced heat transfer double-channel heat exchange unit and heat exchanger thereof |
| CN113310250A (en) * | 2021-05-31 | 2021-08-27 | 威玛自动化设备常熟有限公司 | Tubular heat exchanger for food production |
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Address after: 215000 No.158 Jinshajiang Road, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Bixin energy technology (Suzhou) Co.,Ltd. Address before: 215002 plant 11, No. 158, Jinshajiang Road, high tech Zone, Suzhou, Jiangsu Province Patentee before: SUZHOU BSE AIR CONDITIONER Co.,Ltd. |
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