CN108709339A - Liquid distributor, falling film evaporator and air-conditioning - Google Patents
Liquid distributor, falling film evaporator and air-conditioning Download PDFInfo
- Publication number
- CN108709339A CN108709339A CN201810708069.8A CN201810708069A CN108709339A CN 108709339 A CN108709339 A CN 108709339A CN 201810708069 A CN201810708069 A CN 201810708069A CN 108709339 A CN108709339 A CN 108709339A
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- Prior art keywords
- liquid
- fluid
- uniformly mixing
- equal
- mixing groove
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- 239000007788 liquid Substances 0.000 title claims abstract description 375
- 239000011552 falling film Substances 0.000 title claims abstract description 48
- 238000004378 air conditioning Methods 0.000 title claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 97
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 239000010408 film Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 abstract description 43
- 238000000926 separation method Methods 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- 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
- 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
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to a kind of liquid distributor, falling film evaporator and air-conditionings.Liquid distributor includes fluid-uniformly mixing groove and gear liquid bath.The bottom wall of fluid-uniformly mixing groove offers multiple cloth fluid through-holes, and the headspace of fluid-uniformly mixing groove is connected to the exhaust passage of falling film evaporator.Gear liquid bath is set to above the bottom wall of fluid-uniformly mixing groove, gear liquid bath fluid-uniformly mixing groove keeps off the two side that liquid bath includes opposite, opposite two side offers multiple overflow through-holes respectively on gear liquid bath, and the headspace for keeping off liquid bath is connected to the exhaust passage of falling film evaporator, and refrigerant can be injected by keeping off in liquid bath.Gas-liquid mixed refrigerant can carry out a gas-liquid separation and secondary gas-liquid separation respectively during entering gear liquid bath and fluid-uniformly mixing groove, effectively reduce the inclusion content of the gaseous coolant from the liquid refrigerants that fluid-uniformly mixing groove bottom wall flows out, and then ensure that liquid refrigerants forms liquid film that is uniform, stablizing in heat exchange pipe surface, improve the heat exchange efficiency of falling film evaporator.
Description
Technical field
The present invention relates to technical field of heat exchange equipment, more particularly to a kind of liquid distributor, falling film evaporator and air-conditioning.
Background technology
In the course of work of falling film evaporator, the refrigerant of gas-liquid mixture phase enters the cloth liquid in falling film evaporator from top
Device, refrigerant drips after liquid distributor is distributed and flowed to be poured on heat exchanger tube, and cold is passed to user.Liquid refrigerants is evaporated itself
Afterwards, into the air entry of compressor, condenser is discharged into after being compressed.Liquid refrigerants forms liquid film that is uniform, stablizing and is covered in
Heat exchange pipe surface is the necessary condition for ensureing falling film evaporator and fully exchanging heat.Gas-liquid mixture phase is cold in traditional falling film evaporator
Matchmaker is not readily separated, and liquid refrigerants can not form liquid film that is uniform, stablizing under the interference of gaseous coolant in heat exchange pipe surface, simultaneously
Gaseous coolant can be accelerated to flow through the speed of heat exchanger tube refrigerant surface, greatly reduce the heat exchange efficiency of falling film evaporator.
Invention content
Based on this, it is necessary to for being changed caused by the refrigerant of gas-liquid mixture phase is not readily separated in traditional falling film evaporator
The low problem of the thermal efficiency provides a kind of refrigerant that can efficiently separate gas-liquid mixture phase and then the cloth liquid for improving heat exchange efficiency
Device, falling film evaporator and air-conditioning.
A kind of liquid distributor, including：
The bottom wall of fluid-uniformly mixing groove, the fluid-uniformly mixing groove offers multiple cloth fluid through-holes, the headspace and falling liquid film of the fluid-uniformly mixing groove
The exhaust passage of evaporator is connected to；
Liquid bath is kept off, is set to above the bottom wall of the fluid-uniformly mixing groove, keeps off gear liquid bath described in liquid bath fluid-uniformly mixing groove includes opposite two
Side wall, opposite two side offers multiple overflow through-holes, the headspace of the gear liquid bath and row respectively on the gear liquid bath
Gas channel is connected to, and can inject refrigerant in the gear liquid bath.
The liquid distributor further includes equal liquid pipe in one of the embodiments, and the equal liquid pipe is set to the gear liquid bath
It is interior, multiple equal fluid through-holes are offered on the tube wall of the equal liquid pipe, the equal liquid pipe can be connected to refrigerant inlet.
The liquid distributor further includes gas block panel in one of the embodiments, and gas block panel described in gas block panel covers at described
The top of fluid-uniformly mixing groove, the gear liquid bath and the equal liquid pipe；The top of the fluid-uniformly mixing groove and the gear liquid bath is respectively to open
Mouthful, and the top of the fluid-uniformly mixing groove and the top of the gear liquid bath are arranged with the inner wall interval of the gas block panel respectively；It is described
Keep off the gap between the gap between liquid bath and the gas block panel, the fluid-uniformly mixing groove and the gas block panel and the gas block panel
Inner wall forms a part for exhaust passage.
The liquid distributor further includes two end-stopping plates in one of the embodiments, the fluid-uniformly mixing groove, the gear liquid bath,
The equal liquid pipe and gas block panel horizontal extension direction having the same, the fluid-uniformly mixing groove, the gear liquid bath, the equal liquid
Pipe and the gas block panel are respectively open along the both ends in horizontal extension direction, and two end-stopping plates close off the equal liquid
The both ends of slot, the gear liquid bath, the equal liquid pipe and the gas block panel along horizontal extension direction.
The gas block panel also has side plate, the side plate along the both sides in horizontal extension direction in one of the embodiments,
Bottom end be less than the fluid-uniformly mixing groove bottom end.
The top for keeping off gear liquid bath two side described in liquid bath in one of the embodiments, is higher than the center of the equal liquid pipe,
The equal fluid through-hole is opened in the equal liquid pipe central horizontal face with the tube wall of lower part.
The internal diameter of equal fluid through-hole is more than or equal to the internal diameter of the overflow through-hole, the overflow in one of the embodiments,
The internal diameter of through-hole is more than or equal to the internal diameter of the cloth fluid through-hole.
The liquid distributor further includes inlet tube in one of the embodiments, and the both ends of the inlet tube are respectively communicated with institute
State equal liquid pipe and refrigerant inlet.
A kind of falling film evaporator, including shell, liquid distributor and pipe heat exchanger, the liquid distributor are that said program is any
Liquid distributor described in；The liquid distributor is set to the top in the shell, and the pipe heat exchanger is set to the cloth liquid
The lower section of device；There is airflow clearance between the gas block panel and the shell.
The gas block panel (240) also has side plate along the both sides in horizontal extension direction in one of the embodiments,
(241), the bottom end of the side plate (241) is less than the bottom end of the fluid-uniformly mixing groove (210), and the bottom end of the side plate (241) extends to
The second comb of falling liquid film area bottom is between the 5th comb of bottom in the pipe heat exchanger (300).
The falling film evaporator further includes escape pipe in one of the embodiments, and the escape pipe is set to the shell
The top of body, one end of the escape pipe are connected to the enclosure interior, and the other end of the escape pipe can be with air-conditioning equipment
Air-breathing circuit communication.
A kind of air-conditioning, including interconnected evaporator and condensation structure, the evaporator are the drop described in said program
Film evaporator.
Above-mentioned liquid distributor, falling film evaporator and air-conditioning, overflow through-hole is opened in the gear liquid bath in two lateral walls can
Cushioning effect is played to the gas-liquid mixed refrigerant in injection gear liquid bath.With the continuous injection of gas-liquid mixed refrigerant, injection gear liquid
Gas-liquid mixed refrigerant in slot accumulates in the bottom of gear liquid bath first, and gaseous coolant is during injection and accumulation with bubble
Form overflow, liquid refrigerants then accumulates in gear liquid bath, and the gaseous coolant that is mingled in liquid refrigerants is reduced, and it is mixed to realize gas-liquid
Close a gas-liquid separation of refrigerant.The gaseous coolant overflowed in gas-liquid separation overshoot enters from the headspace of gear liquid bath
The exhaust passage of falling film evaporator is discharged.When the liquid refrigerants for being mingled with a small amount of gaseous coolant accumulates to the height of overflow through-hole,
Liquid refrigerants flows into fluid-uniformly mixing groove from the overflow through-hole on gear liquid bath side wall.Liquid refrigerants flow to fluid-uniformly mixing groove by the side wall of gear liquid bath
It is impacted in the process, the gaseous coolant being mixed in liquid refrigerants further overflows, and realizes the secondary of gas-liquid mixed refrigerant
Gas-liquid separation.The gaseous coolant overflowed during secondary gas-liquid separation enters falling film evaporator from the headspace of fluid-uniformly mixing groove
Exhaust passage is discharged.Above-mentioned gear liquid bath realizes a gas-liquid separation and secondary gas-liquid separation with fluid-uniformly mixing groove cooperation, effectively drops
The inclusion content of the low gaseous coolant from the liquid refrigerants that fluid-uniformly mixing groove bottom wall flows out, and then ensure that liquid refrigerants in heat exchanger tube table
Face forms liquid film that is uniform, stablizing, and eliminates the shadow of average speed when gaseous coolant flows through heat exchanger tube surface to liquid refrigerants
It rings, improves the heat exchange efficiency of falling film evaporator.The gaseous coolant of spilling enters the exhaust passage of falling film evaporator, reduces gas
The carrying amount of state refrigerant liquid refrigerants liquid pearl in discharge process, and then absorbing gas belt liquid is reduced to air-conditioning heat exchange cycle system
It influences, ensure that the normal operation of air-conditioning system.
Description of the drawings
Fig. 1 is the liquid distributor dimensional structure diagram that one embodiment of the invention provides；
Fig. 2 is the fluid-uniformly mixing groove dimensional structure diagram that one embodiment of the invention provides；
Fig. 3 is the gear liquid bath dimensional structure diagram that one embodiment of the invention provides；
Fig. 4 is the equal liquid pipe dimensional structure diagram that one embodiment of the invention provides；
Fig. 5 is Section A-A enlarged structure schematic diagram in Fig. 4；
Fig. 6 is the liquid distributor dimensional structure diagram that another embodiment of the present invention provides；
Fig. 7 is the falling film evaporator dimensional structure diagram that one embodiment of the invention provides；
Fig. 8 is the falling film evaporator main structure diagram that one embodiment of the invention provides；
Fig. 9 is section B-B structural schematic diagram in Fig. 8；
Figure 10 is D-D cross section structure schematic diagrams in Fig. 8.
Wherein：
10- falling film evaporators
100- shells
200- liquid distributors
210- fluid-uniformly mixing grooves
211- cloth fluid through-holes
220- keeps off liquid bath
221- overflow through-holes
The equal liquid pipes of 230-
The equal fluid through-holes of 231-
240- gas block panels
241- side plates
250- end-stopping plates
260- inlet tubes
300- pipe heat exchangers
310- heat exchanger tubes
400- escape pipes
500- exhaust passages
The internal diameter of the equal fluid through-holes of a-
The internal diameter of b- overflow through-holes
The internal diameter of c- cloth fluid through-holes
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, it and combines attached
A kind of liquid distributor, falling film evaporator and the air-conditioning of the present invention is further elaborated in figure.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.In embodiment attached drawing it is various difference objects in convenient for enumerate explanation ratio draw, rather than press practical group
The ratio of part is drawn.
With the development of air conditioner industry, flooded type evaporator structure optimization has tended towards stability, and each air conditioner industry all gradually will
Structure innovation turns to downward film evaporator.The principal element for influencing downward film evaporator heat exchange efficiency is cold medium flux, liquid distributor
Structure, heat exchanger tube tube bank arrangement, gas outlet absorbing gas belt liquid etc., wherein being again most with the influence degree of liquid distributor.
Liquid distributor includes fountain and dripping type, and fountain liquid distributor in the ideal situation can spray refrigerant liquid at liquid
It is covered on heat exchange pipe external surface after pearl even smaller drop, drop and liquid pearl carry out connection accumulation, are formed continuous and uniform
Liquid film carry out heat exchange with heat exchanger tube and exchange.But pressure and flow velocity are difficult to control during actually spraying, and can not determine whether
Refrigerant is evenly arranged in heat exchange pipe surface, and easy to carry small refrigerant drop after refrigerant evaporation gasification, is caused serious
Air-breathing solution dehumidification while migration.Dripping type liquid distributor is to lean on refrigerant self gravitation effect and Viscosity Properties, and formed with perforated plate construction
Refrigerant fluid column drops on heat exchanger tube, forms uniform and thin liquid film, carries out heat exchange with heat exchanger tube and exchange.Since refrigerant enters steaming
It is gas-fluid two-phase mixture when sending out device, gas phase flow velocity influences the mean flow rate of two-phase refrigerant, largely influences interior liquid
Refrigerant state, to influence cloth liquid effect.
Liquid distributor structure directly affects falling film evaporator refrigerant liquid distribution and quality of forming film, and refrigerant liquid film uniformity coefficient
Directly affect heat exchange efficiency.Therefore, it is the effective means for improving falling film evaporator performance to be optimized to liquid distributor structure.For
For dripping type liquid distributor, the refrigerant gas-liquid separation of liquid distributor will be entered into most air conditioner industry focus of attention.
As shown in Fig. 1-3 and Figure 10, the present invention provides a kind of liquid distributor 200, including fluid-uniformly mixing groove 210 and gear liquid bath 220.
The bottom wall of liquid bath 210 offers multiple cloth fluid through-holes 211, implies that the bottom wall of fluid-uniformly mixing groove 210 is porous plate.The top of fluid-uniformly mixing groove 210
Portion space is connected to the exhaust passage 500 of falling film evaporator 10, and exhaust passage 500 is as shown by the arrows in Figure 10.Gear liquid bath 220 is set
It is placed in fluid-uniformly mixing groove 210, the bottom wall interval of the bottom wall and fluid-uniformly mixing groove 210 that keep off liquid bath 220 is arranged, and gear liquid bath 220 includes opposite
Two side keeps off opposite two side on liquid bath 220 and offers multiple overflow through-holes 221 respectively, keep off the headspace of liquid bath 220 with
The exhaust passage 500 of falling film evaporator 10 is connected to, and refrigerant can be injected by keeping off in liquid bath 220.
Above-mentioned liquid distributor 200, overflow through-hole 221, which is opened in the gear liquid bath 220 in two lateral walls, to keep off liquid to injection
Gas-liquid mixed refrigerant in slot 220 plays cushioning effect.With the continuous injection of gas-liquid mixed refrigerant, injection is kept off in liquid bath 220
Gas-liquid mixed refrigerant accumulate in first gear liquid bath 220 bottom, gaseous coolant is during injection and accumulation with bubble
Form overflow, liquid refrigerants then accumulates in gear liquid bath 220, and the gaseous coolant that is mingled in liquid refrigerants is reduced, and realizes gas
Gas-liquid separation of liquid mixing refrigerant.The gaseous coolant that overflows is from the top of gear liquid bath 220 in gas-liquid separation overshoot
The exhaust passage 500 that space enters falling film evaporator 10 is discharged.When the liquid refrigerants for being mingled with a small amount of gaseous coolant accumulates to overflow
When the height of through-hole 221, liquid refrigerants flows into fluid-uniformly mixing groove 210 from the overflow through-hole 221 on gear 220 side wall of liquid bath.Liquid refrigerants
It is impacted during flowing to fluid-uniformly mixing groove 210 by the side wall of gear liquid bath 220, is mixed in gaseous coolant in liquid refrigerants into one
Step is overflowed, and the secondary gas-liquid separation of gas-liquid mixed refrigerant is realized.The gaseous coolant overflowed during secondary gas-liquid separation from
The exhaust passage 500 that the headspace of fluid-uniformly mixing groove 210 enters falling film evaporator 10 is discharged.
Above-mentioned gear liquid bath 220 realizes a gas-liquid separation and secondary gas-liquid separation with the cooperation of fluid-uniformly mixing groove 210, effectively drops
The inclusion content of the low gaseous coolant from the liquid refrigerants that 210 bottom wall of fluid-uniformly mixing groove flows out, and then ensure that liquid refrigerants is exchanging heat
310 surface of pipe forms liquid film that is uniform, stablizing, and eliminates when gaseous coolant flows through 310 surface of heat exchanger tube to liquid refrigerants and put down
The influence of equal speed, improves the heat exchange efficiency of falling film evaporator 10.The gaseous coolant of spilling enters the row of falling film evaporator 10
Gas channel 500, reduces the carrying amount of gaseous coolant liquid refrigerants liquid pearl in discharge process, and then reduces absorbing gas belt liquid pair
The influence of air-conditioning heat exchange cycle system, ensure that the normal operation of air-conditioning system.
As shown in Fig. 1 and Fig. 4, in an embodiment of the present invention, liquid distributor 200 further includes equal liquid pipe 230, equal liquid pipe 230
It is set in gear liquid bath 220, multiple equal fluid through-holes 231 is offered on the tube wall of equal liquid pipe 230, equal liquid pipe 230 can be with falling liquid film
The refrigerant inlet of evaporator 10 is connected to.Gas-liquid mixed refrigerant the prolonging along itself that equal liquid pipe 230 can will inject equal liquid pipe 230
Direction is stretched to be allocated.After gas-liquid mixed refrigerant enters in equal liquid pipe 230, led to by the equal liquid opened up on the tube wall of equal liquid pipe 230
Hole 231 flows out in gear liquid bath 220.Gas-liquid mixed refrigerant by the tube wall of equal liquid pipe 230 flow to gear liquid bath 220 during by
Impact, gaseous coolant overflow, this process is a kind of realization method of gas-liquid separation of gas-liquid mixed refrigerant.Optionally, equal liquid
Setting is abutted or is spaced between the bottom of pipe 230 and the bottom wall of gear liquid bath 220.In the present embodiment, the bottom of equal liquid pipe 230
It is spaced and is arranged between the bottom wall of gear liquid bath 220, the path length that gas-liquid mixed refrigerant flow to gear 220 process of liquid bath can be increased
And impact degree, in order to which more gaseous coolants overflow.The gaseous coolant of spilling enters from the headspace of gear liquid bath 220
The exhaust passage 500 of falling film evaporator 10 is discharged.
Further, as shown in Figures 4 and 5, the top of gear liquid bath 220 is opening, and equal liquid pipe 230 is round tube.Keep off liquid bath
The top of 220 two side is higher than the center of equal liquid pipe 230, and equal fluid through-hole 231 is opened in 230 central horizontal face of equal liquid pipe or less
Partial tube wall, though under larger pressure liquid refrigerants by equal liquid pipe 230 equal 231 emission direction of fluid through-hole if be only
It sprays, ejection or horizontal ejection diagonally downward, is sprayed when liquid refrigerants can be effectively prevent to be flowed out from equal liquid pipe 230 vertically downward
It splashes to the region other than gear liquid bath 220.As a kind of achievable mode, in the section of equal liquid pipe 230, the equal liquid of top is logical
The line and the angle across the vertical line of 230 kernel of section of equal liquid pipe of 230 kernel of section of the center in hole 231 and equal liquid pipe
Less than or equal to 90 °.In the present embodiment, as shown in figure 5, the circumferencial direction along 230 section of equal liquid pipe offers the equal fluid through-hole of 7 row
231, the equal fluid through-hole of each column 231 is opened up along the extending direction array of equal liquid pipe 230 respectively.The center of the equal fluid through-hole of top 231
Angle with the line of 230 kernel of section of equal liquid pipe and across the vertical line of 230 kernel of section of equal liquid pipe is equal to 90 °, meaning
That is the center of the equal fluid through-hole of top 231 is located at 230 central horizontal face of equal liquid pipe.
In an embodiment of the present invention, as shown in figs 6-8, liquid distributor 200 further includes inlet tube 260, and the two of inlet tube 260
End is respectively communicated with the refrigerant inlet of equal liquid pipe 230 and falling film evaporator 10, and equal liquid pipe 230 can pass through inlet tube 260 and drop
The refrigerant inlet of film evaporator 10 is connected to.Optionally, it is removably to be fixedly connected between inlet tube 260 and equal liquid pipe 230
Or it non-removable is fixedly connected.As a kind of achievable mode, the tube wall top of equal liquid pipe 230 offers and inlet tube
260 adaptations into fluid through-hole, one end of inlet tube 260 be inserted into 230 tube wall top of equal liquid pipe into fluid through-hole, and inlet tube
It is attached in a welding manner between 260 and equal liquid pipe 230 and realizes sealing.As a kind of achievable mode, equal liquid pipe
230 tube wall top offers the internal thread through hole being adapted to inlet tube 260, and inlet tube 260 is screwed in externally threaded one end
The internal thread through hole of 230 tube wall top of equal liquid pipe is connected threadably between inlet tube 260 and liquid pipe 230
It connects and realizes sealing.
In an embodiment of the present invention, as shown in Fig. 6 and Figure 10, liquid distributor 200 further includes gas block panel 240, gas block panel 240
Bottom end be opening, gas block panel 240 covers at the top of fluid-uniformly mixing groove 210, gear liquid bath 220 and equal liquid pipes 230.Fluid-uniformly mixing groove 210
And gear liquid bath 220 top be respectively be open, and the top of fluid-uniformly mixing groove 210 and keep off liquid bath 220 top respectively with gear gas
The inner wall interval of plate 240 is arranged.It keeps off between the gap between liquid bath 220 and gas block panel 240, fluid-uniformly mixing groove 210 and gas block panel 240
The inner wall of gap and gas block panel 240 forms a part for exhaust passage 500 in falling film evaporator 10.Gas block panel 240 can draw
The gaseous coolant overflowed during a gas-liquid separation and secondary gas-liquid separation is led to flow and be discharged according to exhaust passage 500.
The gaseous coolant of spilling enters the exhaust passage 500 of falling film evaporator 10, and it is cold to reduce gaseous coolant liquid in discharge process
The carrying amount of matchmaker liquid pearl, and then influence of the absorbing gas belt liquid to air-conditioning heat exchange cycle system is reduced, it ensure that air-conditioning system just
Often operation.
Optionally, pass through common support knot between fluid-uniformly mixing groove 210, gear liquid bath 220, equal liquid pipe 230 and gas block panel 240
Structure is supported connection, or realizes above-mentioned relative position relation respectively by individual support construction.Implement in the present invention one
In example, in Fig. 1, Fig. 9 and Figure 10, liquid distributor 200 further includes two end-stopping plates 250, fluid-uniformly mixing groove 210, gear liquid bath 220, equal liquid
240 horizontal extension direction having the same of pipe 230 and gas block panel, fluid-uniformly mixing groove 210, gear liquid bath 220, equal liquid pipe 230 and gear
Gas plate 240 along horizontal extension direction both ends be respectively be open, two shutters close off fluid-uniformly mixing groove 210, gear liquid bath 220,
The both ends of liquid pipe 230 and gas block panel 240 along horizontal extension direction.End-stopping plate 250 can play simultaneously fixed support and
The effect closed fluid-uniformly mixing groove 210, keep off liquid bath 220,230 horizontal extension direction both ends of equal liquid pipe.Further, end-stopping plate 250 is with full
The mode of weldering welding closes fluid-uniformly mixing groove 210, gear liquid bath 220, equal liquid pipe 230 and gas block panel 240 along the two of horizontal extension direction
End.
In the above-described embodiments, fluid-uniformly mixing groove 210, gear liquid bath 220 are punching structure part, and the plank being sized passes through curved
Folding obtains the fluid-uniformly mixing groove 210 for having side wall along horizontal extension direction both ends open, both sides or gear liquid bath 220.In fluid-uniformly mixing groove 210
Bottom wall stamps out the cloth fluid through-hole 211 of array arrangement, stamps out the overflow through-hole of array arrangement in the two side of gear liquid bath 220
221.The equal fluid through-hole 231 into fluid through-hole and positioned at lower part on top is stamped out on the basis of original tube to obtain this reality
Apply the equal liquid pipe 230 in example.Inlet tube 260 is common pipe, is connected through a screw thread with equal liquid pipe 230 when inlet tube 260
When mode is connected and sealed, processes external threads in one end of inlet tube 260 and go out adaptation in the inwall processing into fluid through-hole
Internal thread.
In an embodiment of the present invention, as shown in Fig. 6 and Figure 10, gas block panel 240 also has along the both sides in horizontal extension direction
There are side plate 241, the bottom end of side plate 241 to be less than the bottom end of fluid-uniformly mixing groove 210, the bottom end of side plate 241 extends in pipe heat exchanger 300
The second comb of falling liquid film area bottom is between the 5th comb of bottom, wherein " the second comb of falling liquid film area bottom to the 5th comb of bottom " refers to
Be " since falling liquid film area most descend comb up number the second comb to the 5th comb ".Side plate 241 can be to a certain extent
Increasing the length of exhaust passage 500, the gaseous coolant easy to carry for having a small amount of liquid refrigerants liquid pearl is detached with liquid refrigerants liquid pearl,
It is further reduced the carrying amount of gaseous coolant liquid refrigerants liquid pearl in discharge process.
In an embodiment of the present invention, as in Figure 3-5, the internal diameter a of equal fluid through-hole 231 is more than or equal to overflow through-hole 221
Internal diameter b, the internal diameter b of overflow through-hole 221 is more than or equal to the internal diameter c, i.e. a >=b >=c of cloth fluid through-hole 211.Cloth fluid through-hole 211 overflows
Recirculation hole 221, equal fluid through-hole 231 aperture be sequentially reduced, liquid refrigerants by repeatedly stop with buffering after carry out cloth liquid, with
Ensure that liquid coolant flow velocity steadily declines.
The present invention also provides a kind of falling film evaporators 10, and as is seen in figs 7-10, falling film evaporator 10 includes shell 100, cloth
Liquid device 200 and pipe heat exchanger 300, liquid distributor 200 are said program any one of them liquid distributor 200.Liquid distributor 200 is set
It is placed in the top in shell 100, pipe heat exchanger 300 is set to the bottom of liquid distributor 200.Between gas block panel 240 and shell 100
With airflow clearance.Airflow clearance between gas block panel 240 and shell 100 forms exhaust passage 500 in falling film evaporator 10
A part.The gaseous coolant overflowed after gas-liquid separation moves downwardly to the bottom end of side plate 241 along the inner wall of gas block panel 240, then
Airflow clearance discharge between the outer wall and shell 100 of gas block panel 240.Further, falling film evaporator 10 further includes escape pipe
400, escape pipe 400 is set to the top of shell 100, and one end of escape pipe 400 is connected to 100 inside of shell, escape pipe 400
The other end can be with the air-breathing circuit communication of air-conditioning equipment.Gaseous coolant can have gas between gas block panel 240 and shell 100
Ebb interval enters in escape pipe 400 and eventually enters into the air-breathing circuit of air-conditioning equipment.Liquid coolant and pipe in falling film evaporator 10
Formula heat exchanger 300 evaporates formation gaseous coolant after exchanging heat also is discharged along exhaust passage 500.The presence of gas block panel 240 increases
The length of gaseous coolant discharge path, effectively reduces the carrying amount of liquid refrigerants liquid pearl in gaseous coolant, and then reduces suction
Influence of the gas carrying liquid to air-conditioning heat exchange cycle system, ensure that the normal operation of air-conditioning system.
The present invention also provides a kind of air-conditionings, including interconnected evaporator and condensation structure, and evaporator is said program
In falling film evaporator 10.
Above-mentioned liquid distributor 200 is dripping type liquid distributor, in gas-liquid mixed refrigerant into fashionable advanced row gas-liquid separation, then with liquid
State refrigerant carries out cloth liquid, reduces refrigerant mean flow rate, it is easier to fluid column flows form is formed, in a manner of laminar flow or wave laminar
It is contacted with 310 outside wall surface of heat exchanger tube, then is spread out along circumferential extend of heat exchanger tube 310, cloth liquid is uniform, reduces on heat exchanger tube 310
The region not covered by liquid film.Gaseous coolant walks different channels from liquid refrigerants point, avoids gaseous coolant to liquid refrigerants cloth
Interfered when liquid, ensure that refrigerant fluid column integrated degree and continuity, at the same exhaust passage 500 be connected to 100 inside of shell and
Inside liquid distributor 200, exhaust passage 500 can balance 200 internal pressure of liquid distributor and 100 internal pressure of shell, and liquid coolant only leans on itself
Gravity carries out cloth liquid, is finally reached the more uniform effect of cloth liquid.
In above-mentioned liquid distributor 200, gas-liquid mixed refrigerant mobility status includes two kinds.The first situation：Gas-liquid mixed is cold
Flow velocity is relatively low when matchmaker enters inlet tube 260, flows to liquid phase refrigerant after equal liquid pipe 230 and carries out axial distribution and under the effect of gravity
It is deposited in 230 bottom of equal liquid pipe, the equal fluid through-hole 231 on 230 tube wall of equal liquid pipe is not covered by liquid refrigerants completely；Gaseous state is cold
Matchmaker is flowed out and is risen from uncovered equal fluid through-hole 231, the equal liquid that liquid refrigerants is covered from 230 bottom liquid refrigerants of equal liquid pipe
Through-hole 231 flows out, and gas-liquid mixed refrigerant realizes first time gas-liquid separation.The second situation：Gas-liquid mixed refrigerant enters inlet tube
Flow velocity is higher when 260, covers all equal fluid through-holes 231 after flowing to equal liquid pipe 230, and pressure increases in equal liquid pipe 230, by liquid
State refrigerant is extruded from equal fluid through-hole 231；Liquid refrigerants carries gaseous coolant and flows to gear liquid bath 220, and it is cold to keep off liquid in liquid bath 220
Matchmaker's influx is more than discharge, and liquid refrigerants continued accumulation reaches balance until influx and discharge, the liquid gathered at this time
Refrigerant floods 230 lower half of equal liquid pipe；When gas-liquid mixed refrigerant flows into gear liquid bath 220, gaseous coolant is overflowed in the form of bubbling,
Liquid refrigerants flows into fluid-uniformly mixing groove 210, and gaseous coolant rises in the form of bubbles, and gas-liquid mixed refrigerant realizes second of gas-liquid point
From.In actual condition, the arrangement of 220 side wall overflow recirculation hole 221 of liquid bath is kept off by control, above-mentioned two situations can deposit simultaneously
.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (12)
1. a kind of liquid distributor, which is characterized in that including：
The bottom wall of fluid-uniformly mixing groove (210), the fluid-uniformly mixing groove (210) offers multiple cloth fluid through-holes (211), the fluid-uniformly mixing groove (210)
Headspace be connected to exhaust passage (500)；
Liquid bath (220) is kept off, is set to above the bottom wall of the fluid-uniformly mixing groove (210), gear liquid bath (220) described in liquid bath fluid-uniformly mixing groove is kept off and wraps
Include opposite two side, opposite two side offers multiple overflow through-holes (221) respectively on the gear liquid bath (220), described
The headspace of gear liquid bath (220) is connected to exhaust passage (500), can inject refrigerant in the gear liquid bath (220).
2. liquid distributor according to claim 1, which is characterized in that the liquid distributor (200) further includes equal liquid pipe (230),
The equal liquid pipe (230) is set in the gear liquid bath (220), and multiple equal liquid are offered on the tube wall of the equal liquid pipe (230)
Through-hole (231), the equal liquid pipe (230) can be connected to refrigerant inlet.
3. liquid distributor according to claim 2, which is characterized in that the liquid distributor (200) further includes gas block panel (240),
Gas block panel described in gas block panel (240) covers at the fluid-uniformly mixing groove (210), the gear liquid bath (220) and the equal liquid pipe (230)
Top；The top of the fluid-uniformly mixing groove (210) and the gear liquid bath (220) is respectively open, and the fluid-uniformly mixing groove (210)
Top and the top of the gear liquid bath (220) are arranged with the inner wall interval of the gas block panel (240) respectively；The gear liquid bath
(220) gap between the gap between the gas block panel (240), the fluid-uniformly mixing groove (210) and the gas block panel (240) with
And the inner wall of the gas block panel (240) forms a part for exhaust passage (500).
4. liquid distributor according to claim 3, which is characterized in that the liquid distributor (200) further includes two end-stopping plates
(250), the fluid-uniformly mixing groove (210), the gear liquid bath (220), the equal liquid pipe (230) and the gas block panel (240) have
Identical horizontal extension direction, the fluid-uniformly mixing groove (210), the gear liquid bath (220), the equal liquid pipe (230) and the gear
Gas plate (240) is respectively to be open along the both ends in horizontal extension direction, and two end-stopping plates close off the fluid-uniformly mixing groove
(210), the both ends of the gear liquid bath (220), the equal liquid pipe (230) and the gas block panel (240) along horizontal extension direction.
5. liquid distributor according to claim 3, which is characterized in that the gas block panel (240) is along the two of horizontal extension direction
Also there is side plate (241), the bottom end of the side plate (241) to be less than the bottom end of the fluid-uniformly mixing groove (210) for side.
6. according to claim 2-5 any one of them liquid distributors, which is characterized in that keep off liquid bath (220) both sides described in gear liquid bath
The top of wall is higher than the center of the equal liquid pipe (230), and the equal fluid through-hole (231) is opened in equal liquid pipe (230) center
Horizontal plane is with the tube wall of lower part.
7. according to claim 2-5 any one of them liquid distributors, which is characterized in that the internal diameter of equal fluid through-hole (231) is more than etc.
It is more than or equal to the cloth fluid through-hole (211) in the internal diameter of the internal diameter of the overflow through-hole (221), the overflow through-hole (221)
Internal diameter.
8. according to claim 2-5 any one of them liquid distributors, which is characterized in that the liquid distributor (200) further includes feed liquor
It manages (260), the both ends of the inlet tube (260) are respectively communicated with the equal liquid pipe (230) and refrigerant inlet.
9. a kind of falling film evaporator, which is characterized in that including shell (100), liquid distributor (200) and pipe heat exchanger (300),
The liquid distributor (200) is claim 3-5 any one of them liquid distributor (200)；The liquid distributor (200) is set to described
Top in shell (100), the pipe heat exchanger (300) are set to the lower section of the liquid distributor (200)；The gas block panel
(240) there is airflow clearance between the shell (100).
10. falling film evaporator according to claim 9, which is characterized in that the gas block panel (240) is along horizontal extension direction
Both sides also there is side plate (241), the bottom end of the side plate (241) to be less than the bottom end of the fluid-uniformly mixing groove (210), the side plate
(241) bottom end extends in the pipe heat exchanger (300) the second comb of falling liquid film area bottom between the 5th comb of bottom.
11. falling film evaporator according to claim 9, which is characterized in that the falling film evaporator (10) further includes outlet
Manage (400), the escape pipe (400) is set to the top of the shell (100), one end of the escape pipe (400) with it is described
Connection inside shell (100), the other end of the escape pipe (400) can be with the air-breathing circuit communication of air-conditioning equipment.
12. a kind of air-conditioning, which is characterized in that including interconnected evaporator and condensation structure, the evaporator is wanted for right
Seek 9-11 any one of them falling film evaporator (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708069.8A CN108709339A (en) | 2018-07-02 | 2018-07-02 | Liquid distributor, falling film evaporator and air-conditioning |
| PCT/CN2018/121883 WO2020006992A1 (en) | 2018-07-02 | 2018-12-19 | Liquid distributor, falling film evaporator, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708069.8A CN108709339A (en) | 2018-07-02 | 2018-07-02 | Liquid distributor, falling film evaporator and air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108709339A true CN108709339A (en) | 2018-10-26 |
Family
ID=63872161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810708069.8A Pending CN108709339A (en) | 2018-07-02 | 2018-07-02 | Liquid distributor, falling film evaporator and air-conditioning |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108709339A (en) |
| WO (1) | WO2020006992A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357441A (en) * | 2018-12-14 | 2019-02-19 | 珠海格力电器股份有限公司 | Downward film evaporator and air-conditioning |
| CN110285605A (en) * | 2019-07-01 | 2019-09-27 | 珠海格力电器股份有限公司 | Cloth liquid structure and heat exchanger |
| WO2020006992A1 (en) * | 2018-07-02 | 2020-01-09 | 珠海格力电器股份有限公司 | Liquid distributor, falling film evaporator, and air conditioner |
| CN111661888A (en) * | 2020-06-15 | 2020-09-15 | 方诺传热***(江苏)有限公司 | Falling film type air cooler based on evaporative air cooling technology and wastewater treatment process |
| EP3714958A1 (en) * | 2019-03-28 | 2020-09-30 | Carrier Corporation | Evaporator and baffle structure thereof |
| CN112028156A (en) * | 2020-09-28 | 2020-12-04 | 江苏固环环境科技有限公司 | Overflow weir type distributor for thin-layer drying equipment |
| WO2021022870A1 (en) * | 2019-08-08 | 2021-02-11 | 青岛海尔空调电子有限公司 | Liquid uniformizing device and air conditioner |
| CN112944745A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Liquid distributor, falling film type heat exchanger and air conditioner |
| CN113251708A (en) * | 2020-02-13 | 2021-08-13 | Lg电子株式会社 | Evaporator with a heat exchanger |
| CN113639487A (en) * | 2020-04-27 | 2021-11-12 | 青岛海尔空调电子有限公司 | Falling film type heat exchanger |
| EP3865792A4 (en) * | 2019-08-22 | 2022-08-03 | McQuay Air Conditioning & Refrigeration (Wuhan) Co., Ltd. | Cooling medium distributor and evaporator containing said cooling medium distributor |
| US11624533B2 (en) | 2020-02-13 | 2023-04-11 | Lg Electronics Inc. | Evaporator |
| US11898780B2 (en) | 2020-02-13 | 2024-02-13 | Lg Electronics Inc. | Evaporator |
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| CN111661888A (en) * | 2020-06-15 | 2020-09-15 | 方诺传热***(江苏)有限公司 | Falling film type air cooler based on evaporative air cooling technology and wastewater treatment process |
| CN112028156A (en) * | 2020-09-28 | 2020-12-04 | 江苏固环环境科技有限公司 | Overflow weir type distributor for thin-layer drying equipment |
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| WO2020006992A1 (en) | 2020-01-09 |
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