CN112361668A - Supercooling device, shell and tube condenser and water cooling unit - Google Patents
Supercooling device, shell and tube condenser and water cooling unit Download PDFInfo
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- CN112361668A CN112361668A CN202011359394.1A CN202011359394A CN112361668A CN 112361668 A CN112361668 A CN 112361668A CN 202011359394 A CN202011359394 A CN 202011359394A CN 112361668 A CN112361668 A CN 112361668A
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- 238000004781 supercooling Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 title abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 117
- 239000003507 refrigerant Substances 0.000 claims abstract description 92
- 230000005494 condensation Effects 0.000 claims abstract description 32
- 238000009833 condensation Methods 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims description 46
- 238000003466 welding Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 239000011555 saturated liquid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/042—Details of condensers of pcm condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/23—Separators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a supercooling device, a shell and tube condenser and a water cooling unit, relates to the technical field of heat exchangers, and solves the technical problem that the supercooling device in the traditional condenser in the prior art is low in heat exchange efficiency. The device is used for setting up in shell and tube condenser, including the device body, wherein, is provided with the orifice on the device body, and the liquid refrigerant in the condenser shell pipe can be used for liquid refrigerant flash evaporation to become gas-liquid mixture state refrigerant through orifice and orifice, and the gaseous state refrigerant that flash evaporation generated can be followed the liquid outlet discharge in the condenser shell pipe after the condensation structure condensation. The invention is used for improving the supercooling degree of the liquid refrigerant discharged from the shell-and-tube condenser.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a supercooling device, a shell and tube condenser with the supercooling device and a water cooling unit with the supercooling device.
Background
In the modern society, the air conditioner becomes indispensable equipment for improving the life of residents and regulating and controlling the environment, the proportion of energy consumption of an air conditioning system to total energy consumption of China is increased day by day, and the improvement of the energy efficiency level of the air conditioning system has important significance on the development strategy of 'green and efficient' advocated in China at present. In an air conditioning system, the design scheme that the performance coefficient of the system can be improved by improving the supercooling of a liquid refrigerant and the energy efficiency of the system is enhanced by improving the supercooling has been widely adopted by various large equipment manufacturers.
The inlet high-temperature superheated gaseous refrigerant of the shell-and-tube condenser commonly used for the air conditioning system of the large-scale water chilling unit exchanges heat with cooling media in a heat exchange tube, the refrigerant is cooled and condensed to become saturated liquid refrigerant, the saturated liquid refrigerant enters a supercooling device to further reduce the temperature (namely, the supercooling degree of the saturated liquid refrigerant is improved), and finally the saturated liquid refrigerant enters an evaporator through throttling to exchange heat with chilled water, so that the temperature of the chilled water is reduced and supplied to users.
The traditional condenser is internally provided with a supercooling region in a baffling mode, namely, a liquid refrigerant passes through a baffling transverse cold region heat exchange tube bundle on the outer side of the tube to exchange heat with a cooling medium in the tube, the baffling transverse cold region heat exchange tube bundle has a simple structure, but the heat exchange mode is 'liquid-liquid' heat transfer, the flow velocity of the refrigerant side cannot be too high due to the restriction, and the heat exchange efficiency is lower; the baffling mode is adopted for supercooling, so that enough heat exchange area is needed to obtain larger supercooling degree, and the cost is increased.
Disclosure of Invention
The invention aims to provide a supercooling device, a shell and tube condenser and a water cooling unit, which solve the technical problem that the supercooling device in the traditional condenser in the prior art has relatively low heat exchange efficiency. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a supercooling device which is arranged in a shell-and-tube condenser and comprises a device body, wherein a throttling hole is formed in the device body, liquid refrigerant in a condenser shell tube can pass through the throttling hole, the throttling hole is used for flashing the liquid refrigerant into gas-liquid mixed refrigerant, and the gas refrigerant generated by flashing can be discharged from a liquid outlet in the condenser shell tube after being condensed by a condensation structure.
Further, the supercooling device further includes a gas-liquid separating portion to which the liquid-mixed refrigerant discharged from the orifice can flow for separation of the gaseous refrigerant and the liquid refrigerant.
Further, the sum of the areas of the throttle holes is not more than 80% of the cross-sectional area of the inlet pipe of the shell-and-tube condenser.
Further, the device body comprises a central baffle, the inside of the condenser shell is divided into a condensation area and a supercooling area by the central baffle, the condensation area is internally provided with a condensation pipe of the shell-and-tube condenser, the supercooling area is internally provided with a condensation structure, and the central baffle is provided with the throttling hole.
Further, the central baffle comprises a top area and side areas, the two side areas are respectively arranged on two sides of the top area, the extending directions of the top area and the side areas are parallel to the axial direction of the condenser shell tube, and the throttle holes are distributed on the side areas.
Further, the top area is of a structure with a high middle part and low two ends on a cross section perpendicular to the axis of the condenser shell pipe.
Furthermore, the device body further comprises a gas-liquid separation plate, the gas-liquid separation plate is arranged on the lower plate surface of the top area, a distance exists between the lower end of the gas-liquid separation plate and the inner side surface of the bottom of the condenser shell tube, the two side areas are located below the top area, and gas-liquid mixed state refrigerants discharged from the throttling hole can flow to the gas-liquid separation plate.
Furthermore, the number of the gas-liquid separation plates is two, the two gas-liquid separation plates are distributed on the top area at intervals, the extending directions of the two gas-liquid separation plates are parallel to the axial direction of the condenser shell tube, and the gas-liquid mixed refrigerant discharged from the throttling hole can respectively flow to the gas-liquid separation plates on the corresponding sides.
Further, the throttle holes on the side areas extend in the length direction of the side areas, and the lower edges of the gas-liquid separation plates are not higher than the lower edges of the throttle holes on the corresponding sides.
Further, the device body still includes the spoiler, the spoiler sets up two between the gas-liquid separation board, the region in spoiler place is provided with condensation structure.
Furthermore, the spoilers comprise lower spoilers, the two lower spoilers are arranged at intervals, the extending direction of the two lower spoilers is parallel to the axial direction of the condenser shell tube, the bottom ends of the lower spoilers are arranged on the inner side surface of the bottom of the condenser shell tube, a flowing liquid channel is arranged between the bottom ends of the lower spoilers and the inner side surface of the bottom of the condenser shell tube, a distance is arranged between the top ends of the lower spoilers and the top area, the top ends of the lower spoilers are not lower than the bottom ends of the gas-liquid separation plates on the corresponding sides, and the condensation structure is arranged between the two lower spoilers.
Furthermore, the spoiler still includes the spoiler, go up the spoiler setting and be in two between the spoiler and the extending direction is on a parallel with the axis direction of condenser shell and tube, the top of going up the spoiler with the lower plate in top district is connected, there is the interval between the bottom of going up the spoiler and the medial surface of condenser shell and tube bottom, the height of going up the spoiler bottom is not more than two the height of spoiler top.
Furthermore, welding support legs are arranged at two ends of the bottom of the lower spoiler, and a liquid passing notch is formed in the bottom end of the lower spoiler.
Further, the condensation structure is a condensation pipe, and the extension direction of the condensation structure is parallel to the axial direction of the condenser shell pipe.
A shell and tube condenser comprises the supercooling device.
A water chilling unit comprises the supercooling device.
The invention provides a supercooling device which comprises a device body, wherein a throttling hole is formed in the device body, a saturated liquid refrigerant flashes into a gas-liquid mixed refrigerant after passing through the throttling hole, a gaseous refrigerant carries out phase change heat exchange after passing through a condensation structure, so that the gaseous refrigerant is condensed into the liquid refrigerant again, and the supercooling degree can be improved on the premise of not increasing the heat exchange area by utilizing the characteristic of higher heat exchange efficiency of the refrigerant phase change.
The preferred technical scheme of the invention can at least produce the following technical effects:
the supercooling device also comprises a gas-liquid separation part, the gas-liquid mixed refrigerant realizes the gas-liquid separation effect through the gas-liquid separation part, the separated liquid refrigerant is discharged from a liquid outlet in the shell pipe of the condenser, and the separated gaseous refrigerant is condensed into the liquid refrigerant after heat exchange through the condensation structure and is discharged from the liquid outlet;
the device body still includes the spoiler, and the spoiler direction gas refrigerant's flow direction is favorable to the air current evenly distributed to do benefit to the heat transfer between gaseous state refrigerant and the condensation structure.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional front view of a shell and tube condenser provided in an embodiment of the present invention;
FIG. 2 is a schematic left side cross-sectional view of a shell and tube condenser provided in an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a subcooling device provided in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a subcooling device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a center baffle provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a lower spoiler according to an embodiment of the present invention.
FIG. 1-orifice; 2-a condenser shell tube; 21-a liquid outlet; 22-an air inlet pipe; 23-a condenser tube; 24-a condensation zone; 25-supercooling zone; 26-a first water chamber; 27-water chamber II; 3-a central baffle; 31-top zone; 32-a lateral zone; 4-gas-liquid separation plate; 5-lower spoiler; 51-welding feet; 52-liquid passing gap; 6-upper spoiler.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 6, the invention provides a supercooling device, which is arranged in a shell-and-tube condenser and comprises a device body, wherein a throttle hole 1 is arranged on the device body, liquid refrigerant in a condenser shell tube 2 can pass through the throttle hole 1, the throttle hole 1 is used for flashing the liquid refrigerant into gas-liquid mixed refrigerant, and the flash generated gaseous refrigerant can be discharged from a liquid outlet 21 on the condenser shell tube 2 after being condensed by a condensation structure. Referring to fig. 2, the subcooling device is shown disposed within the shell and tube condenser near the bottom. Gaseous refrigerant discharged by the compressor enters the condenser through the upper air inlet pipe 22 of the shell, high-temperature gaseous refrigerant exchanges heat with cooling water in the condenser pipe 23 and condenses into saturated liquid refrigerant, the saturated liquid refrigerant flashes into gas-liquid mixed refrigerant through the orifice 1 (the saturated refrigerant has pressure loss through the orifice 1, and then pressure difference is generated around the orifice 1, under the condition of pressure difference, part of the saturated refrigerant passing through the orifice 1 flashes into gaseous refrigerant to form gas-liquid mixed refrigerant), the gaseous refrigerant performs phase change heat exchange after passing through the condensation structure to condense into liquid refrigerant again, the degree of supercooling of the saturated liquid refrigerant can be further improved in the condensation process, and the condensed liquid refrigerant is discharged from the liquid outlet 21 in the condenser shell pipe 2. The supercooling device provided by the invention can realize supercooling degree improvement on the premise of not increasing the heat exchange area by utilizing the characteristic of higher heat exchange efficiency of refrigerant phase change.
As an optional implementation manner of the embodiment of the present invention, the supercooling apparatus further includes a gas-liquid separation portion to which the liquid-mixed refrigerant discharged from the orifice 1 can flow for separation of the gaseous refrigerant and the liquid refrigerant. The gas-liquid mixed refrigerant can realize the gas-liquid separation effect through the gas-liquid separation part, the separated liquid refrigerant is discharged from the liquid outlet 21 in the condenser shell tube 2, and the separated gas refrigerant is condensed into the liquid refrigerant after heat exchange through the condensation structure and is discharged from the liquid outlet 21.
As an optional implementation manner of the embodiment of the invention, in order to enable the throttling hole 1 to realize the throttling flash effect on the condensed liquid refrigerant, the sum of the areas of the throttling holes 1 is not more than 80% of the sectional area of the inlet pipe 22 of the shell-and-tube condenser.
As an alternative implementation manner of the embodiment of the present invention, referring to fig. 2-4, the device body includes a central baffle 3, the central baffle 3 divides the inside of the condenser shell and tube 2 into a condensation zone 24 and a supercooling zone 25, a condensation pipe 23 of the shell and tube condenser is arranged in the condensation zone 24, a condensation structure is arranged in the supercooling zone 25, and the central baffle 3 is provided with an orifice 1.
The specific structure of the central baffle 3 is as follows: the central baffle 3 comprises a top area 31 and a side area 32, the two side areas 32 are respectively arranged at two sides of the top area 31, the extending directions of the top area 31 and the side areas 32 are parallel to the axial direction of the condenser shell tube 2, and the throttle holes 1 are distributed on the side areas 32. The central baffle 3 is preferably symmetrical about a center line parallel to the axis of the condenser shell and tube 2.
The section of the top area 31 vertical to the axis of the condenser shell tube 2 is of a structure with a high middle part and two low ends. The top area 31 is configured to guide the saturated liquid refrigerant condensed in the condensation area 24 to flow to the side areas 32 on both sides, and the liquid refrigerant is flashed through the orifice 1.
As an alternative implementation manner of the embodiment of the present invention, referring to fig. 2-4, the device body further includes a gas-liquid separation plate 4, the gas-liquid separation plate 4 is disposed on the lower plate surface of the top area 31, a distance is formed between the lower end of the gas-liquid separation plate 4 and the inner side surface of the bottom of the condenser shell tube 2, two side areas 32 are located below the top area 31, and the gas-liquid mixed refrigerant discharged from the orifice 1 can flow to the gas-liquid separation plate 4.
Referring to fig. 2 to 4, the number of the gas-liquid separation plates 4 is two, the two gas-liquid separation plates 4 are distributed at intervals on the top area 31, the extending direction of the two gas-liquid separation plates 4 is parallel to the axial direction of the condenser shell tube 2, and the gas-liquid mixed refrigerant discharged from the orifice 1 can respectively flow to the gas-liquid separation plates 4 on the corresponding sides. Referring to fig. 3, the refrigerant flowing from the orifices 1 on both sides is schematically shown to flow to the corresponding gas-liquid separation plates 4. After the gas-liquid mixed refrigerant impacts the gas-liquid separation plate 4, under the action of gravity, the liquid refrigerant is gathered on the surface of the gas-liquid separation plate 4 and flows towards the bottom of the condenser shell tube 2, and the gaseous refrigerant flows in the upper area due to low density and light weight, so that the effect of a gas-liquid separator is realized.
Referring to fig. 4, the orifices 1 in the side area 32 extend in the longitudinal direction of the side area 32, and the orifices 1 are uniformly spaced apart, and the lower edge of the gas-liquid separation plate 4 is not higher than the lower edge of the corresponding side orifice 1 (referring to fig. 3, the orifice 1 on the corresponding side of the gas-liquid separation plate 4 on the left side is the orifice 1 on the side area 32 on the left side; and the orifice 1 on the corresponding side of the gas-liquid separation plate 4 on the right side is the orifice 1 on the side area 32 on the right side).
As an optional implementation manner of the embodiment of the present invention, the device body further includes a spoiler, the spoiler is disposed between the two gas-liquid separation plates 4, and a condensation structure is disposed in an area where the spoiler is located. The spoiler guides the flow direction of the gas refrigerant, is favorable for uniform distribution of air flow and heat exchange between the gas refrigerant and the condensation structure.
The specific structure of the spoiler is as follows: referring to fig. 3 and 4, the spoiler includes the lower spoilers 5, two of the lower spoilers 5 are disposed at an interval and extend in a direction parallel to the axial direction of the condenser shell tube 2, the bottom ends of the lower spoilers 5 are disposed on the inner side surface of the bottom of the condenser shell tube 2, a fluid passage is formed between the bottom ends of the lower spoilers 5 and the inner side surface of the bottom of the condenser shell tube 2, a gap is formed between the top end of the lower spoilers 5 and the top end of the top area 31, the top end of the lower spoilers 5 is not lower than the bottom end of the gas-liquid separation plate 4 on the corresponding side, and the top end of the lower spoilers 5 is preferably flush with the middle position of the orifice 1 (the orifice 1 on the corresponding side) (see fig. 3, the orifice 1 on the corresponding side of the lower spoiler 5 on the left side is the orifice 1 on the side area 32 on the left side, the orifice 1 on, the condensation structure is arranged between the two lower spoilers 5.
The spoiler still includes the spoiler 6, and the direction of extension that goes up the spoiler 6 and set up between two spoilers 5 down is on a parallel with the axis direction of condenser shell and tube 2, and the top of going up the spoiler 6 is connected with the lower plate surface of top district 31, has the interval between the medial surface of the bottom of going up the spoiler 6 and condenser shell and tube 2 bottom, and the height of going up the spoiler 6 bottom is not more than the height on two spoilers 5 tops. Referring to fig. 3, the separated gaseous refrigerant is shown flowing under the turbulent action of the lower and upper spoilers 5 and 6. The condensing structure is a condensing tube 23, and the extending direction of the condensing structure is parallel to the axial direction of the condenser shell and tube 2. Referring to fig. 3, it is shown that a condenser pipe 23 is distributed between the two lower spoilers 5, and the separated gas refrigerant flows into the condenser pipe 23 between the lower spoilers 5 after being disturbed by the flow, and is condensed into a liquid refrigerant after exchanging heat with the condenser pipe 23 and discharged from the liquid outlet 21.
Referring to fig. 6, as an alternative embodiment of the present invention, there is shown a lower spoiler 5, wherein two ends of the bottom of the lower spoiler 5 are provided with welding support legs 51, and the bottom of the lower spoiler 5 is provided with a liquid passing gap 52. The lower spoiler 5 is fixed with the inner wall of the condenser shell and tube 2 through the welding support legs 51 at the two ends in a spot welding manner; through the liquid passing notch 52, a liquid passing channel is formed between the lower spoiler 5 and the inner wall of the condenser shell and tube 2, and after the gas-liquid mixture state refrigerant impacts the gas-liquid separation plate 4, the liquid refrigerant is gathered on the surface of the gas-liquid separation plate 4 and flows to the bottom of the condenser shell and tube 2 under the action of gravity, and the liquid passing channel is formed between the lower spoiler 5 and the inner wall of the condenser shell and tube 2 and flows to the liquid outlet 21.
A shell and tube condenser comprises the supercooling device provided by the invention. The flash type supercooling device enables saturated liquid refrigerant condensed from the interior of the condenser to flash into low-temperature saturated gas-liquid two-phase refrigerant, the gaseous refrigerant is separated and then exchanges heat with the condensation structure, the gaseous refrigerant is condensed into liquid refrigerant, and then the liquid refrigerant discharged from the liquid outlet 21 has lower outlet temperature, so that the supercooling degree of the liquid refrigerant is improved.
A water cooling unit comprises the supercooling device provided by the invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (16)
1. A subcooling device for placement in a shell-and-tube condenser, comprising a device body, wherein,
the device body is provided with a throttling hole (1), liquid refrigerants in the condenser shell tube (2) can pass through the throttling hole (1), the throttling hole (1) is used for flashing the liquid refrigerants into gas-liquid mixed refrigerants, and the gas refrigerants generated by flashing can be discharged from a liquid outlet (21) in the condenser shell tube (2) after being condensed by a condensation structure.
2. A supercooling apparatus according to claim 1, wherein the supercooling apparatus further comprises a gas-liquid separating portion to which the liquid-mixed refrigerant discharged from the orifice (1) can flow for separation of the gaseous refrigerant and the liquid refrigerant.
3. A subcooling device as described in claim 1, wherein the sum of the areas of the orifices (1) is no more than 80% of the cross-sectional area of the shell and tube condenser inlet tube (22).
4. A subcooling device according to any one of claims 1-3, wherein the device body comprises a central baffle (3), the central baffle (3) dividing the interior of the condenser shell tube (2) into a condensation zone (24) and an supercooling zone (25), the condensation zone (24) having the condenser tubes (23) of the shell and tube condenser disposed therein, the supercooling zone (25) having the condensing structure disposed therein, and the central baffle (3) having the orifice (1) disposed therein.
5. A subcooling device according to claim 4, characterized in that the central baffle (3) comprises a top zone (31) and side zones (32), two side zones (32) being arranged on either side of the top zone (31) and the side zones (32) extending in a direction parallel to the axial direction of the condenser shell tube (2), the orifices (1) being distributed in the side zones (32).
6. A subcooling device as described in claim 5, wherein the top section (31) is of a high-in-the-middle and low-at-ends configuration in a cross-section perpendicular to the axis of the condenser shell and tube (2).
7. A subcooling device as described in claim 6, wherein the body further comprises a gas-liquid separating plate (4), the gas-liquid separating plate (4) is disposed on the lower plate surface of the top region (31), the lower end of the gas-liquid separating plate (4) is spaced apart from the inner surface of the bottom of the condenser shell tube (2), and the two side regions (32) are located below the top region (31), and the mixed-phase refrigerant discharged from the orifice (1) can flow toward the gas-liquid separating plate (4).
8. A subcooling device as described in claim 7, wherein there are two gas-liquid separation plates (4), two gas-liquid separation plates (4) are spaced apart from each other in the top region (31) and the two gas-liquid separation plates (4) extend in a direction parallel to the axis of the condenser shell tube (2), and the mixed refrigerant discharged from the orifice (1) can flow to the gas-liquid separation plates (4) on the corresponding sides.
9. A subcooling device as described in claim 8, wherein the orifice (1) in the side section (32) extends lengthwise of the side section (32) and the lower edge of the gas-liquid separation plate (4) is no higher than the lower edge of the orifice (1) on the corresponding side.
10. A subcooling device as described in claim 8, wherein the device body further comprises a baffle plate disposed between the two gas-liquid separation plates (4) in the region where the condensing structure is located.
11. A subcooling device as described in claim 10, wherein the baffles comprise a lower baffle (5), two of the lower baffles (5) are spaced apart from each other and extend parallel to the axial direction of the condenser shell tube (2), the bottom end of the lower baffle (5) is disposed on the inner side of the bottom of the condenser shell tube (2), a fluid passage is formed between the bottom end of the lower baffle (5) and the inner side of the bottom of the condenser shell tube (2), the top end of the lower baffle (5) is spaced apart from the top area (31) and the top end of the lower baffle (5) is not lower than the bottom end of the gas-liquid separation plate (4) on the corresponding side, and the condensing structure is disposed between the two lower baffles (5).
12. A subcooling device as described in claim 11, further comprising an upper spoiler (6), wherein the upper spoiler (6) is disposed between the two lower spoilers (5) and extends parallel to the axial direction of the condenser shell tube (2), the top end of the upper spoiler (6) is connected to the lower plate surface of the top section (31), the bottom end of the upper spoiler (6) is spaced apart from the inner surface of the bottom of the condenser shell tube (2), and the bottom end of the upper spoiler (6) has a height no greater than the height of the top ends of the two lower spoilers (5).
13. A supercooling device according to claim 12, wherein welding legs (51) are provided at both ends of the bottom of the lower spoiler (5), and a liquid passing gap (52) is provided at the bottom end of the lower spoiler (5).
14. A subcooling device according to claim 1 or 10, wherein the condensing structure is a condenser tube (23) and the direction of extension of the condensing structure is parallel to the axial direction of the condenser shell and tube (2).
15. A shell and tube condenser including the subcooling device of any one of claims 1-14.
16. A water chiller plant comprising a subcooling device as described in any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359394.1A CN112361668A (en) | 2020-11-27 | 2020-11-27 | Supercooling device, shell and tube condenser and water cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359394.1A CN112361668A (en) | 2020-11-27 | 2020-11-27 | Supercooling device, shell and tube condenser and water cooling unit |
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| Publication Number | Publication Date |
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| CN112361668A true CN112361668A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011359394.1A Pending CN112361668A (en) | 2020-11-27 | 2020-11-27 | Supercooling device, shell and tube condenser and water cooling unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776240A (en) * | 2021-09-28 | 2021-12-10 | 珠海格力电器股份有限公司 | Regenerative condenser and air circulation system |
| WO2024021698A1 (en) * | 2022-07-27 | 2024-02-01 | 珠海格力电器股份有限公司 | Shell-and-tube heat exchanger and air conditioning unit |
-
2020
- 2020-11-27 CN CN202011359394.1A patent/CN112361668A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776240A (en) * | 2021-09-28 | 2021-12-10 | 珠海格力电器股份有限公司 | Regenerative condenser and air circulation system |
| WO2024021698A1 (en) * | 2022-07-27 | 2024-02-01 | 珠海格力电器股份有限公司 | Shell-and-tube heat exchanger and air conditioning unit |
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