CN111947488A - Flash device with high supercooling efficiency and heat exchanger - Google Patents

Flash device with high supercooling efficiency and heat exchanger Download PDF

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Publication number
CN111947488A
CN111947488A CN202010858559.3A CN202010858559A CN111947488A CN 111947488 A CN111947488 A CN 111947488A CN 202010858559 A CN202010858559 A CN 202010858559A CN 111947488 A CN111947488 A CN 111947488A
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CN
China
Prior art keywords
baffle
flash device
communicating pipe
shell
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010858559.3A
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Chinese (zh)
Inventor
胡海利
杨锦源
王小勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202010858559.3A priority Critical patent/CN111947488A/en
Publication of CN111947488A publication Critical patent/CN111947488A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1615—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
    • 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
    • F25B39/02—Evaporators
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention provides a flash device with high supercooling efficiency and a heat exchanger. The flash device submerges in liquid refrigerant, the flash device includes: a housing; the supercooling pipe is arranged inside the shell, and a low-temperature refrigerant flows through the supercooling pipe; the communicating pipe is arranged inside the shell, the end part of the communicating pipe penetrates through the shell and then is communicated with the liquid refrigerant, and the communicating pipe is provided with a jet hole. According to the flash device and the heat exchanger with high supercooling efficiency, provided by the invention, the liquid refrigerant is introduced into the shell through the communicating pipe and is sprayed for flash, then the low-temperature refrigerant is introduced by the supercooling pipe for supercooling, the supercooling degree is effectively increased, the gas-liquid separation effect in the communicating pipe can be increased by arranging the baffle plate, the condensation dripping process of the refrigerant is increased, the corrugated structure is arranged, the surface area of the baffle plate impacted by the gas-liquid mixed refrigerant is increased, the filtering effect is amplified, and the supercooling degree is improved to the maximum extent.

Description

Flash device with high supercooling efficiency and heat exchanger
Technical Field
The invention relates to the technical field of air treatment equipment, in particular to a flash device with high supercooling efficiency and a heat exchanger.
Background
At present, in order to improve the energy efficiency of a refrigerating equipment unit, the method for increasing the supercooling degree of a condenser is one of low-cost and good-effect methods. The methods for increasing the supercooling degree are mainly three methods: 1. the method is complex in structure and high in cost; 2. a subcooler is arranged in the method, the structure is simple, and the cost is low; 3. and a system regenerative cycle is adopted, so that the complexity and the loss of a connecting pipeline are large. Therefore the second kind of structure sexual valence relative altitude, it is extensive to use, but this structure often all improves the subcooling degree through setting up more supercooling pipes or baffling structure, and the heat exchange tube is with high costs in this kind of mode, and baffling structure leads to the system pressure drop big, and liquid refrigerant is mixed with the gaseous state easily and flows through the liquid outlet, has the less problem of subcooling degree.
Disclosure of Invention
In order to solve the technical problem that the supercooling degree of a heat exchanger in the prior art is small, the flash device with the flash structure and high supercooling efficiency and the heat exchanger are provided.
A flash device immersed in a liquid refrigerant, the flash device comprising:
the liquid outlet is formed in the bottom of the shell;
the supercooling pipe is arranged inside the shell, and cooling water flows through the supercooling pipe;
the communicating pipe is arranged inside the shell, the end part of the communicating pipe penetrates through the shell and then is communicated with the liquid refrigerant, and the communicating pipe is provided with a jet hole;
the injection direction of the injection hole faces the supercooling pipe.
And two ends of the communicating pipe penetrate through the shell and are communicated with the liquid refrigerant.
Two ends of the communicating pipe penetrate through the same side face of the shell; or the two ends of the communicating pipe penetrate through different side faces of the shell.
When the flash device is horizontally placed, the shell is of a cuboid structure, and two ends of the communicating pipe penetrate through the bottom surface of the cuboid structure; or when the flash device is horizontally placed, the shell is of a cuboid structure, and the two ends of the communicating pipe penetrate through the side face of the cuboid structure.
The flash device further comprises a baffle, the supercooling pipe is arranged above the communicating pipe, the baffle is arranged between the communicating pipe and the supercooling pipe, and the injection direction of the injection hole points to the baffle.
Through holes are formed in the baffle plate, and the distance between the through holes is equal along the length direction of the baffle plate; or the baffle is provided with through holes, and the distance between the through holes is gradually increased along the length direction of the baffle.
The section of the baffle is arc-shaped or inverted V-shaped; or the edge of the baffle is provided with a folded edge.
The edge of the baffle is provided with liquid passing holes, and the distances between the liquid passing holes are equal along the length direction of the baffle; or the baffle is provided with liquid passing holes, and the distance between the liquid passing holes is gradually increased along the length direction of the baffle.
The surface of the baffle facing the communicating pipe is provided with a corrugated groove.
The cross section of the groove is V-shaped or U-shaped.
When the flash device is horizontally arranged, the baffle plate and the horizontal plane form an included angle.
The baffle has a first end and a second end along the length direction of the baffle, and the distance from the first end to the bottom surface of the shell is smaller than the distance from the second end to the bottom surface of the shell.
Along the width direction of baffle, the baffle has first border and second border, and the distance of first border to the bottom surface of casing is less than the distance of second border to the bottom surface of casing.
The angle range of the included angle is 0-10 degrees.
The communicating pipe is 1-shaped, L-shaped, Z-shaped or U-shaped.
The number of the injection holes is in direct proportion to the unit flow of the communicating pipes.
The distance between the adjacent injection holes is equal along the axial direction of the communicating pipe; or along the axial direction of the communicating pipe, the distance between the adjacent injection holes is gradually increased.
A heat exchanger comprises the flash device.
The flash device is located below the liquid level in the heat exchanger.
The liquid outlet is communicated with the outside of the heat exchanger.
According to the flash device and the heat exchanger with high supercooling efficiency, provided by the invention, the liquid refrigerant is introduced into the shell through the communicating pipe and is sprayed for flash, then the low-temperature refrigerant is introduced by the supercooling pipe for supercooling, the supercooling degree is effectively increased, the gas-liquid separation effect in the communicating pipe can be increased by arranging the baffle plate, the condensation dripping process of the refrigerant is increased, the corrugated structure is arranged, the surface area of the baffle plate impacted by the gas-liquid mixed refrigerant is increased, the filtering effect is amplified, and the supercooling degree is improved to the maximum extent.
Drawings
FIG. 1 is a schematic structural diagram of a Z-shaped communicating pipe flash apparatus of an embodiment of the flash apparatus and heat exchanger with high supercooling efficiency provided by the present invention;
FIG. 2 is a schematic structural view of a baffle of an embodiment of a flash device and heat exchanger with high subcooling efficiency according to the present invention;
FIG. 3 is another schematic structural view of the baffle of an embodiment of the subcooling-efficient flash device and heat exchanger provided in accordance with the present invention;
FIG. 4 is another schematic structural view of the baffle of an embodiment of the subcooling-efficient flash device and heat exchanger provided in accordance with the present invention;
FIG. 5 is another schematic structural view of the baffle of an embodiment of the subcooling-efficient flash device and heat exchanger provided in accordance with the present invention;
FIG. 6 is a schematic structural view of a flash apparatus with baffles inclined in the length direction according to an embodiment of the flash apparatus and heat exchanger with high supercooling efficiency provided by the present invention;
FIG. 7 is a schematic structural view of a flash apparatus with baffles inclined in the width direction according to an embodiment of the flash apparatus and heat exchanger with high supercooling efficiency provided by the present invention;
FIG. 8 is a cross-sectional view of a heat exchanger of an embodiment of the flash device and heat exchanger with high subcooling efficiency provided by the present invention;
in the figure:
1. a housing; 11. a liquid outlet; 2. a supercooling pipe; 3. a communicating pipe; 31. an injection hole; 4. a baffle plate; 41. a through hole; 42. and (4) liquid passing holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 8, the flash apparatus is immersed in a liquid refrigerant, and includes:
the liquid cooling device comprises a shell 1, wherein a liquid outlet 11 is formed in the bottom of the shell 1, the shell 1 forms a relatively closed environment, and a supercooled liquid refrigerant formed in the shell 1 is discharged out of the shell 1 through the liquid outlet 11; the supercooling pipe 2 is arranged inside the shell 1, cooling water flows through the supercooling pipe 2, and the gaseous refrigerant inside the shell 1 is condensed by the cooling water, so that a supercooling effect is formed; the communication pipe 3 is arranged inside the shell 1, the end part of the communication pipe 3 penetrates through the shell 1 and then is communicated with the liquid refrigerant, the communication pipe 3 is provided with an injection hole 31, and the injection direction of the injection hole 31 faces the supercooling pipe 2;
the communicating pipe 3 introduces the liquid refrigerant inside the shell 1, and utilizes the tiny jet holes 31 to flash instantly to jet the refrigerant into the shell 1, so that the temperature of the refrigerant is instantly reduced, the purpose of flash supercooling is achieved, meanwhile, the gaseous refrigerant flowing out of the jet holes 31 exchanges heat with the supercooling pipe 2 to be condensed into liquid drops, supercooling is completed again, and the supercooling effect of the heat exchanger is effectively increased.
The communicating tube 3 corresponding to the liquid outlet 11 is not provided with the injection hole 31, so that the gaseous refrigerant is prevented from directly entering the liquid outlet 11.
Both ends of the communicating pipe 3 penetrate through the shell 1 and then are communicated with the liquid refrigerant in the heat exchanger, the liquid refrigerant in the heat exchanger can enter the communicating pipe 3 from both ends of the communicating pipe 3, namely, the communicating pipe 3 can only introduce the refrigerant but can not discharge the refrigerant, and meanwhile, the liquid refrigerant quantity of the communicating pipe 3 is increased, so that the supercooling effect of the heat exchanger is increased.
Two ends of the communicating pipe 3 penetrate through the same side surface of the shell 1; or the two ends of the communicating pipe 3 penetrate through different side surfaces of the shell 1, so that the liquid inlet direction of the communicating pipe 3 is increased, the problem that the communicating pipe 3 cannot smoothly feed liquid due to the fact that the liquid level of liquid refrigerant is uneven and cannot completely cover the end part of the communicating pipe 3 is solved, and refrigerant liquid in different positions (such as left and right or front and back at the bottom) or in uneven distribution can smoothly pass through the injection holes 31 to be subjected to flash supercooling.
When the flash device is horizontally placed, the shell 1 is of a cuboid structure, and two ends of the communicating pipe 3 penetrate through the bottom surface of the cuboid structure; or when the flash device level was placed, casing 1 was the cuboid structure, the both ends of communicating pipe 3 run through the side of cuboid structure, except the top surface of cuboid structure promptly, other surface homoenergetic of cuboid structure feed liquor.
The flash device further comprises a baffle 4, the supercooling pipe 2 is arranged above the communication pipe 3, the baffle 4 is arranged between the communication pipe 3 and the supercooling pipe 2, the spraying direction of the spraying hole 31 is directed towards the baffle 4, the refrigerant sprayed by the spraying hole 31 can generate impact on the surface of the baffle 4, the condensation is liquid refrigerant to complete supercooling, and meanwhile, the refrigerant can drip on the baffle 4 after being condensed with the gaseous refrigerant in contact with the supercooling pipe 2 and collect the refrigerant on the baffle 4 to drip to the bottom of the shell 1.
Through holes 41 are formed in the baffle 4, and the distances among the through holes 41 are equal along the length direction of the baffle 4; or the baffle 4 is provided with through holes 41, and the distance between the through holes 41 is gradually increased along the length direction of the baffle 4, wherein the through holes 41 can be circular or square, and the distance between the through holes 41 is selected according to actual needs;
preferably, the through hole 41 is not formed at the position of the baffle 4 corresponding to the injection hole 31, so that the problem that the heat exchange effect of the supercooling pipe 2 is reduced due to the fact that the jetted refrigerant directly contacts the supercooling pipe 2 through the through hole 41 is avoided.
The section of the baffle 4 is arc-shaped or inverted V-shaped; or the edge of the baffle 4 is provided with a folded edge, so that the surface area is increased relative to the surface area of a flat plate, the gas-liquid separation effect is increased, and meanwhile, the collection and the dripping of liquid drops formed at the supercooling pipe 2 are facilitated.
The edge of the baffle 4 is provided with liquid passing holes 42, and the distances between the liquid passing holes 42 are equal along the length direction of the baffle 4; or the baffle 4 is provided with the liquid passing holes 42, and the distance between the liquid passing holes 42 is gradually increased along the length direction of the baffle 4, so that liquid drops formed at the supercooling pipe 2 can flow back to the bottom of the shell 1 at the liquid passing holes 42.
The baffle 4 is provided with the ripple groove on the surface towards communicating pipe 3, and a plurality of recesses constitute the ripple groove structure to increase the surface area of gas-liquid mixture refrigerant striking, with furthest from the gaseous state refrigerant separation droplet, increase the filter effect, wherein the recess is seted up or is seted up along the width direction of baffle 4 along the length direction of baffle 4, all can play the water conservancy diversion effect of accelerating to assemble the liquid droplet.
The cross section of the groove is V-shaped or U-shaped.
When the flash device is horizontally arranged, the baffle 4 and the horizontal plane form an included angle alpha, namely, the baffle 4 is obliquely arranged, so that the diversion of liquid drops is accelerated, and the liquid drops are converged on the inner wall surface of the shell 1 to drop.
Along the length direction of the baffle 4, the baffle 4 has a first end and a second end, and the distance from the first end to the bottom surface of the shell 1 is smaller than the distance from the second end to the bottom surface of the shell 1, that is, the baffle 4 is inclined along the length direction thereof.
Along the width direction of the baffle 4, the baffle 4 has a first edge and a second edge, and the distance from the first edge to the bottom surface of the shell 1 is smaller than the distance from the second edge to the bottom surface of the shell 1, that is, the baffle 4 is inclined along the width direction thereof.
The angle range of the included angle alpha is 0-10 degrees.
The communicating pipe 3 is 1-shaped, L-shaped, Z-shaped or U-shaped, and the specific shape is determined according to the requirements of the liquid level height of the liquid refrigerant and the like.
The number of the injection holes 31 is in direct proportion to the unit flow rate of the communication pipe 3, so that the injection holes 31 can fully perform flash supercooling.
The pitches of the adjacent injection holes 31 are equal along the axial direction of the communication pipe 3; or the distance between the adjacent injection holes 31 gradually increases along the axial direction of the communication pipe 3.
A heat exchanger comprises the flash device.
The flash device is positioned below the liquid level in the heat exchanger, namely the flash device is soaked in the liquid refrigerant of the heat exchanger.
The liquid outlet 11 is communicated with the outside of the heat exchanger, the supercooled refrigerant inside the shell 1 is directly discharged to the heat exchanger through the liquid outlet 11 without being mixed with the liquid refrigerant in the heat exchanger, the liquid refrigerant in the heat exchanger is prevented from entering the shell 1 through the liquid outlet 11, and the supercooling degree of the refrigerant discharged by the heat exchanger can be increased.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (20)

1. A flash device, characterized by: submerge in liquid refrigerant, the flash device includes:
the device comprises a shell (1), wherein a liquid outlet (11) is formed in the bottom of the shell (1);
the supercooling pipe (2) is arranged inside the shell (1), and cooling water flows inside the supercooling pipe (2);
the communicating pipe (3) is arranged inside the shell (1), the end part of the communicating pipe (3) penetrates through the shell (1) and then is communicated with the liquid refrigerant, and the communicating pipe (3) is provided with a jet hole (31).
2. The flash device of claim 1, wherein: the injection direction of the injection hole (31) faces the supercooling pipe (2).
3. The flash device of claim 1, wherein: and two ends of the communicating pipe (3) penetrate through the shell (1) and are communicated with the liquid refrigerant.
4. The flash device of claim 3, wherein: two ends of the communicating pipe (3) penetrate through the same side surface of the shell (1); or the two ends of the communicating pipe (3) penetrate through different side surfaces of the shell (1).
5. The flash device of claim 4, wherein: the shell (1) is of a cuboid structure, and two ends of the communicating pipe (3) penetrate through the bottom surface of the cuboid structure; or the two ends of the communicating pipe (3) penetrate through the side face of the cuboid structure.
6. The flash device of claim 1, wherein: the flash device further comprises a baffle (4), the supercooling pipe (2) is arranged above the communicating pipe (3), the baffle (4) is arranged between the communicating pipe (3) and the supercooling pipe (2), and the spraying direction of the spraying hole (31) points to the baffle (4).
7. The flash device of claim 6, wherein: through holes (41) are formed in the baffle (4), and the distance between the through holes (41) is equal along the length direction of the baffle (4); or the baffle (4) is provided with through holes (41), and the distance between the through holes (41) is gradually increased along the length direction of the baffle (4).
8. The flash device of claim 6, wherein: the section of the baffle (4) is arc-shaped or inverted V-shaped; or the edge of the baffle (4) is provided with a folded edge.
9. The flash device of claim 6, wherein: liquid passing holes (42) are formed in the edge of the baffle (4), and the distances between the liquid passing holes (42) are equal along the length direction of the baffle (4); or the baffle (4) is provided with liquid passing holes (42), and the distance between the liquid passing holes (42) is gradually increased along the length direction of the baffle (4).
10. The flash device of claim 6, wherein: the surface of the baffle (4) facing the communicating pipe (3) is provided with a corrugated groove.
11. The flash device of claim 6, wherein: the baffle (4) and the horizontal plane form an included angle.
12. The flash device of claim 11, wherein: along the length direction of baffle (4), baffle (4) have first end and second end, and the distance of first end to the bottom surface of casing (1) is less than the distance of second end to the bottom surface of casing (1).
13. The flash device of claim 11, wherein: along the width direction of baffle (4), baffle (4) have first border and second border, and the distance of first border to the bottom surface of casing (1) is less than the distance of second border to the bottom surface of casing (1).
14. The flash device of claim 11, wherein: the angle range of the included angle is 0-10 degrees.
15. The flash device of claim 1, wherein: the communicating pipe (3) is in a 1-shaped, L-shaped, Z-shaped or U-shaped shape.
16. The flash device of claim 1, wherein: the number of the injection holes (31) is in direct proportion to the unit flow rate of the communication pipe (3).
17. The flash device of claim 1, wherein: the distance between the adjacent injection holes (31) is equal along the axial direction of the communication pipe (3); or along the axial direction of the communication pipe (3), the distance between the adjacent injection holes (31) is gradually increased.
18. A heat exchanger, characterized by: comprising the flash device of any one of claims 1 to 17.
19. The heat exchanger of claim 18, wherein: the flash device is located below the liquid level in the heat exchanger.
20. The heat exchanger of claim 18, wherein: the liquid outlet (11) is communicated with the outside of the heat exchanger.
CN202010858559.3A 2020-08-24 2020-08-24 Flash device with high supercooling efficiency and heat exchanger Pending CN111947488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010858559.3A CN111947488A (en) 2020-08-24 2020-08-24 Flash device with high supercooling efficiency and heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010858559.3A CN111947488A (en) 2020-08-24 2020-08-24 Flash device with high supercooling efficiency and heat exchanger

Publications (1)

Publication Number Publication Date
CN111947488A true CN111947488A (en) 2020-11-17

Family

ID=73359649

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010858559.3A Pending CN111947488A (en) 2020-08-24 2020-08-24 Flash device with high supercooling efficiency and heat exchanger

Country Status (1)

Country Link
CN (1) CN111947488A (en)

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