CN208804910U - The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid - Google Patents
The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid Download PDFInfo
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- CN208804910U CN208804910U CN201821167940.XU CN201821167940U CN208804910U CN 208804910 U CN208804910 U CN 208804910U CN 201821167940 U CN201821167940 U CN 201821167940U CN 208804910 U CN208804910 U CN 208804910U
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Abstract
The utility model discloses a kind of multistage flooded evaporators of spiracular plate structure and anti-absorbing gas belt liquid, in multistage spiracular plate structure, through-hole aperture on each layer orifice plate apart from external equipment air entry distance in gradual change by being arranged, and further away from air entry, through-hole diameter is bigger；When air-flow enters the baffle arrangement by lower layer's orifice plate, the liquid being mingled in air-flow then stops separation outside the air entry step by step by multistage spiracular plate structure.The combination of multilayer gas averaging board, can preferably play the role of uniform flow field, to eliminate the High Speed Flow Field concentration zones below depressed structure, reduce air velocity, avoid droplets from from mechanism and flown by gas band；When biphase gas and liquid flow is by multistage equal spiracular plate, the drop acceleration time is short, and speed is lower, gas-liquid separation collide it is non-breakable when next stage gas averaging board, to prevent broken small diameter drop from continuing that gas is followed to pass through multistage spiracular plate structure.
Description
Technical field
The utility model belongs to refrigeration technology field, and in particular to one kind can prevent the full-liquid type of absorbing gas belt liquid from evaporating
Device.
Background technique
In air-conditioning equipment evaporator, liquid refrigerant enters through throttling set and carries out pond in evaporator between refrigerating medium
Boiling heat transfer, refrigerant liquid level remains certain liquid level in the whole process, therefore liquid refrigerant is to heat conductive wall
There is preferable wetability in face, and boiling heat transfer coefficient is higher.On the other hand, heat exchange area is also made effective use of, and unit changes
The thermal efficiency is also largely increased.But just because of violent heat exchange, refrigerant is usually in fluidized state, and bubble is in liquid level
The gas that the drop that place's rupture generates can be evaporated out carries to form biphase gas and liquid flow and enter compressor, thus to compressor shape
At liquid hammer, the service life of compressor is shortened significantly.Therefore, it is necessary to take measures to prevent the generation of absorbing gas belt liquid phenomenon.At present
There is a kind of evaporator, use baffle arrangement, by baffle arrangement near evaporator air entry, by the multistage for being provided with uniform bore
Baffle prevents gas carrying refrigerant drop from entering evaporator.The problem of it is primarily present has following two points:
1. nearby speed is very big for air entry, multistage baffle causes the biggish pressure drop of evaporator, influences unit performance；
2. the drop that baffle is isolated backs downward into container, since baffle is located near air entry, most of air-flow will
Air-flow can be prevented to move upwards from this position by flowing into compressor, the drop isolated, the smaller droplet isolated in turn
It can also be brought again into compressor by gas and form two sub-band liquid.
There are also other to use non-planar or cambered surface baffle-type vapor-liquid separating structure, and main problem is isolated largely
Drop will from non-planar or cambered surface baffle lowest part for example V-type plate center fall after rise, force air-flow from the side opening of plate two sides
It is flowed into compressor, flow path is long, and pressure drop is big；It is hit in addition, only being formed by a laminate, gas-liquid separation low efficiency.
Utility model content
The technical problem to be solved by the utility model is in view of the above-mentioned drawbacks in the prior art, it is more provide one kind
The grade flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid is realized by multistage gas baffle arrangement to biphase gas and liquid flow
Efficiently separate, to avoid compressor liquid hammer risk.The utility model processing technology is simple and convenient simultaneously, material and production
Cost is relatively low.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of multistage spiracular plate structure, including be interconnected and fixed and at least two layers of orifice plate disposed in parallel, and adjacent
Along the high direction of layer, there are inter-plate gaps between two layers of orifice plate；Multiple through-holes are laid on each layer orifice plate；It is characterized by:
Through-hole aperture on each layer orifice plate apart from external equipment air entry distance in gradual change by being arranged, further away from air-breathing
Mouthful, through-hole diameter is bigger；
Multiple apertures on every layer of orifice plate are longitudinally formed in level mutually arranged along the evenly distributed setting of horizontal cross
Multiple files；Through-hole Heterogeneous Permutation setting on each layer orifice plate, the multistage spiracular plate structure setting is in external equipment
On air intake passage；
When air-flow enters the multistage spiracular plate structure, air-flow enters between each layer orifice plate from the through-hole far from air entry
Gap forms collision, and air-flow reaches air-breathing by maximum horizontal direction retracting path and via the through-hole of top layer's orifice plate after collision
Mouthful, the liquid being mingled in air-flow then stops separation outside the air entry step by step by multistage spiracular plate structure.
Further, lower layer's orifice plate is not provided with through-hole in air entry lower zone.
Further, the structure of the through-hole Heterogeneous Permutation setting on each layer orifice plate are as follows: lower layer's orifice plate position of opening and upper layer
Orifice plate position of opening is staggered, and upper layer orifice plate aperture is arranged in quadrangle composed by lower layer's orifice plate aperture center as far as possible
Center.
Further, each layer orifice plate is non-angular formation plate；Or each layer orifice plate is folded to form to have along center line and press from both sides
The V-type at angle folds orifice plate, and V-type folds each plate face in orifice plate two sides and is equipped with the uniform gradient with respect to center line.
A kind of flooded evaporator of anti-absorbing gas belt liquid, it is characterised in that: the evaporator of air entry is had including top, and
Multistage spiracular plate structure in evaporator tube is set, and multistage spiracular plate structure setting is below the air entry.
Further, in multistage spiracular plate structure, top layer's orifice plate and evaporator tube are fully welded fixation, and lower layer's orifice plate is left
Right both ends are welded in evaporator on the gas baffle of the left and right sides, and the circumferential direction of lower layer's orifice plate and evaporator tube be fully welded or
There are gaps.
Further, back flow channel is arranged in the region that evaporator tube wall is contacted with lower layer orifice plate.
Further, V-type folding orifice plate uses V-type opening up or mode directed downwardly is arranged.
The utility model devises a kind of staggeredly multistage spiracular plate structure being arranged in inside evaporator tube as a result,
The utility model compared with the existing technology, has the advantages that
1. since the aperture on the multistage spiracular plate structure gas averaging boards at different levels of the utility model design is that variation is (remoter
It is bigger from air entry aperture), and combined for multilayer gas averaging board, it can preferably play the role of uniform flow field, to eliminate gas
High Speed Flow Field concentration zones below structure reduce air velocity, avoid droplets from from mechanism and flown by gas band；
2. multistage depressed structure is inside container, air velocity is smaller, therefore resistance is small, and air-flow is by multistage equal spiracular plate
Pressure drop is small；
3. multistage orifice plate can repeatedly carry out shock gas-liquid separation, gas-liquid separation is high-efficient.
4. multistage depressed structure, inside container, when biphase gas and liquid flow is by multistage equal spiracular plate, the drop acceleration time is short,
Speed is lower, gas-liquid separation collide next stage gas averaging board when it is non-breakable, to prevent broken small diameter drop from continuing to follow
Gas passes through multistage spiracular plate structure.
5. multistage orifice plate may be configured as " V " type and inverted " V " type, to make the most of drop isolated along the gradient of orifice plate
Flow back full liquid zone, avoids droplets from concentration and falls after rise to move upwards gas and has an impact.
6. the utility model give gas averaging boards at different levels installation method and reasonable gas averaging board sum of series spacing, simultaneously
Processing technology is simple and convenient, and material and cost of manufacture are lower.
Detailed description of the invention
Fig. 1 is the multistage spiracular plate structure implemented according to the utility model and the full liquid with multistage spiracular plate structure
Formula evaporation structure schematic diagram.
Fig. 2 is Fig. 1 internal structure perspective view figure (after removing shell).
Fig. 3 is evaporator and multistage spiracular plate Structure explosion diagram.
Fig. 4 is a specific cloth hole structure chart of multistage spiracular plate structure.
Fig. 5 illustrates the partial schematic diagram (amplification that gas-liquid two-phase fluid flowing is realized using multistage spiracular plate structure
Figure).
The collapsible multistage spiracular plate structure of another embodiment flooded evaporator of Fig. 6 the utility model.
Collapsible multistage installation condition schematic diagram of the spiracular plate structure in flooded evaporator that Fig. 7 is Fig. 6.
The collapsible multistage spiracular plate structure of Fig. 8 another embodiment of the utility model flooded evaporator.
Collapsible multistage installation condition schematic diagram of the spiracular plate structure in flooded evaporator that Fig. 9 is Fig. 8.
Specific embodiment
According to the multistage of the utility model implementation spiracular plate structure and the flooded evaporator of absorbing gas belt liquid can be prevented such as
Shown in Fig. 1-9.
Fig. 1 is the multistage spiracular plate structure implemented according to the utility model and the full liquid with multistage spiracular plate structure
Formula evaporation structure schematic diagram.Fig. 2 is Fig. 1 internal structure perspective view (after removing shell).Flooded evaporator is horizontal, evaporator
Inner barrel: left and right gas averaging board baffle 1 is arranged in 6 two sides of multistage spiracular plate structure, is multiple below multistage spiracular plate structure 6
The heat exchange area under control of the support connection of support plate 7.End socket 3 is set on the left of evaporator tube, and lid is arranged in the right side setting left and right sides
4, inlet tube 5, the compressor air suction mouth 2 that setting is connect with compressor at the top of cylinder is arranged in cylinder body bottom.
In the course of work, the liquid level of evaporator inner refrigerant will usually flood all heat exchanger tubes in heat exchange tube supporting plate 7.
Multistage spiracular plate structure 6 is welded on the left and right gas averaging board baffle 1 in evaporator, and left and right gas averaging board baffle 1 is welded on
On the cylinder of evaporator.Multistage spiracular plate structure is located at refrigerant liquid face upper space.
Fig. 3 is evaporator and multistage spiracular plate Structure explosion diagram.Shown multistage spiracular plate structure is three layers, wherein
61 be the equal spiracular plate of the first order；62 be the equal spiracular plate in the second level；63 be the equal spiracular plate of the third level.Gas averaging boards at different levels are non-angular
Formation plate.Lower layer's gas averaging board (the equal spiracular plate 61 of the first order, the equal spiracular plate 62 in the second level) left and right is welded on gas baffle 1, week
To can be fully welded with cylinder or there are certain interval, top gas averaging board (the equal spiracular plate 63 of the third level) must be fully welded.
Since compressor air suction mouth position 2 biases, refrigerant evaporates gas and is easier to take immediately below compressor air suction mouth
Band drop enters compressor, therefore it is optimal case, schematic diagram that bottom or lower layer's gas averaging board are not provided with aperture below air entry
In be shown as under 62 air entry of first order gas averaging board 61 and second level gas averaging board equal spiracular plate and be not provided with aperture.While in order to ensure
To the air-breathing uniformity in the entire space of container, gas averaging board structure feature is further away from air inlet, and opening diameter is bigger.It is worth noting
Be the mentioned aperture of present case by taking circular hole as an example, can be replaced with other shapes of aperture in specific implementation.In addition, the third level or most
The equal spiracular plate in upper layer (the equal spiracular plate 63 of the third level), which with evaporator tube must be fully welded, avoids gas from carrying drop along gas
Gap between orifice plate and cylinder travels up to compressor air suction mouth.
The design feature of second and third grade of gas averaging board structure 62,63 are as follows: its position of opening and upper level gas averaging board position of opening
It is staggered, and junior's gas averaging board aperture is arranged in quadrilateral middle composed by upper level gas averaging board aperture center as far as possible,
For example gas averaging board structure 62 left side the first aperture E in the second level is arranged in aperture A, B, C, D of upper level gas averaging board 61 and is formed by
Quadrilateral middle, as shown in Figure 4.
Fig. 5 illustrates the partial schematic diagram of gas-liquid two-phase fluid flowing.When the air-flow of certain speed carries drop by the
On level-one gas averaging board after A and B aperture, due to the equal stomata interlaced arrangement of a second level gas averaging board, two phase flow can directly hit the second level
Gas averaging board 62 without position of opening (wall surface), since the density of gas is smaller, can along between a second level gas averaging board channel flow
It moves and finds nearest second level gas averaging board aperture E outflow, and droplet density is bigger, inertia is larger, strikes next stage gas
Change directional velocity on plate and fall back to liquid phase refrigerant region, the flow channel being difficult between grade and grade is similarly flowed out from E
Fluid can equally hit the further gas-liquid separation of next stage orifice plate, and the gas as a result flowed out from afterbody orifice plate F, G is hardly
Entrained drip.
Additionally, due to multistage gas baffle be located in evaporator, air velocity is lower, along with the acceleration time of drop is short,
Speed is low, and drop is non-breakable, enhances gas-liquid separation effect.The gas-liquid separation of refrigerant thus may be implemented, to keep away
Exempt from the generation of absorbing gas belt liquid phenomenon.Theoretically, in order to meet preferable gas-liquid separation effect, the series of equal spiracular plate it is more more more
It is good, but the pressure drop that more equal spiracular plate series will cause evaporator increases, and reduces the efficiency of unit.Therefore series setting exists
2~5 layers.In addition, influencing gas in order to avoid lesser spacing between plates influences the flow pass of gas and biggish distance between plates
Liquid separating effect, parallel gas averaging board spacing at different levels are maintained between 5-100mm.Top or top layer's gas averaging board 63 is fully welded in cylinder
Upper purpose is that part does not separate drop along gas averaging board and cylinder between final stage prevents second and third grade of gas averaging board structure 62,63
Body wall face gap flows to air entry.
Alternative solution one:
Fig. 6 is the schematic diagram of the collapsible multistage spiracular plate of another embodiment of the utility model.Its design feature is original
Gas flat hole plate at different levels folds certain angle α along center line and forms inverted " V " type structure in design scheme, guarantees that orifice plate two sides are opposite
Center line has the gradient of certain uniform pitch, and bore distribution method and original scheme keep identical (see Fig. 4).Gas averaging board aperture at different levels position
It sets still using staggered design feature.Therefore, the gas that the multistage spiracular plate of inverted " V " type has multistage gas plate is made
It is acted on with high-efficiency gas reservoir.In addition, lower layer's gas averaging board 611 and middle layer gas averaging board 621 or so are welded on gas baffle 1
On, circumferential direction and cylinder wall surface stay the gap of remaining 5-10mm, and most upper level gas baffle 631 and cylinder holding are fully welded.In this way,
Air-flow carries drop between gas averaging board 611-621 and 621-631 when flow passage, and failing can be with across the drop in two-stage channel
It is flowed along the attached wall of the inverted " V " type gradient to plate two sides, full liquid zone is flowed back to by aperture on plate and plate end and the gap of cylinder, thus
It is largely avoided and the gas of the drips fallen after rise evaporation is concentrated to move upwards downwards.And gas baffle 631 is fully welded
Design can not separate drop along the wall surface gap of gas averaging board and cylinder in part between final stage prevents gas averaging board 621-631
Flowing to air entry, (because separating by multilayer, the gas hardly entrained drip flowed out from afterbody gas averaging board 631 is no longer needed
Drop return flow line is stayed between gas averaging board and cylinder wall surface).Fig. 7 is the mounting structure schematic diagram of the orifice plate.
Alternative solution two:
Fig. 8 is the schematic diagram of the collapsible multistage spiracular plate of another embodiment of the utility model.Fig. 9 is the peace of the orifice plate
Assembling structure schematic diagram.
Its design feature is gas flat hole plates at different levels along center line folding certain angle β formation " V " type structure, guarantees orifice plate
There are certain uniform gradient in two sides with respect to center line, and bore distribution method and original scheme keep identical (see Fig. 4).Gas averaging boards at different levels are opened
Hole site still uses staggered design feature.Therefore, the multistage spiracular plate of inverted " V " type has the equal of multistage gas plate
Gas effect and high-efficiency gas reservoir effect.In this way, air-flow, which carries drop, enters next stage by upper level gas averaging board from the bottom up
When gas averaging board, failing can be along " V " type gradient jet attached flow, under gravity through the gradient across the drop in two-stage channel
It flows downward, encounters aperture and flow back into full liquid zone, full liquid zone is all flowed back to from center with the separation drop prevented, thus right
Gas flowfield below plate plays biggish interference effect.Gas averaging board 622 and gas averaging board 612 or so are welded on gas gear in structure
On plate 1, it can be circumferentially fully welded with cylinder or there are certain intervals, gas averaging board 632 must be fully welded with cylinder, in final stage
Part does not separate drop and flows to air entry along gas averaging board and cylinder wall surface gap between prevention gas averaging board 622-632.
The multistage spiracular plate structure of the utility model and the flooded evaporator with multistage spiracular plate structure as a result,
In, it has the following beneficial effects:
Aperture on the multistage gas averaging boards at different levels of spiracular plate structure is variation；
Multistage spiracular plate structure can carry out gas-liquid separating for several times；
Multistage orifice plate may be configured as " V " type and inverted " V " type with aperture；
In addition, the multistage staggered AND DEWATERING FOR ORIFICE STRUCTURE of the utility model design both can be equal for existing anti-absorbing gas belt liquid measure
Gas flowfield flow velocity in even evaporator, and can realize that gas-liquid is separated in evaporator with higher efficiency, relative to used at present
Dense stainless steel filtering net, structure is simple, saves cost.
Claims (8)
1. a kind of multistage spiracular plate structure, including it is interconnected and fixed and at least two layers of orifice plate disposed in parallel, and adjacent two
Along the high direction of layer, there are inter-plate gaps between layer orifice plate；Multiple through-holes are laid on each layer orifice plate；It is characterized by:
Through-hole aperture on each layer orifice plate apart from external equipment air entry distance in gradual change by being arranged, further away from air entry,
Through-hole diameter is bigger；
Multiple apertures on every layer of orifice plate are longitudinally formed in level mutually arranged more along the evenly distributed setting of horizontal cross
A file；Through-hole Heterogeneous Permutation setting on each layer orifice plate, the multistage air-breathing of the spiracular plate structure setting in external equipment
On channel；
When air-flow enters the multistage spiracular plate structure, air-flow enters each layer hole sheet separation shape from the through-hole far from air entry
At collision, air-flow reaches air entry, gas by maximum horizontal direction retracting path and via the through-hole of top layer's orifice plate after collision
The liquid being mingled in stream then stops separation outside the air entry step by step by multistage spiracular plate structure.
2. multistage spiracular plate structure according to claim 1, it is characterised in that: lower layer's orifice plate is in air entry lower zone
It is not provided with through-hole.
3. multistage spiracular plate structure according to claim 1, it is characterised in that: the through-hole Heterogeneous Permutation on each layer orifice plate
The structure of setting are as follows: lower layer's orifice plate position of opening and upper layer orifice plate position of opening are staggered, and upper layer orifice plate aperture is as far as possible
It is arranged in quadrilateral middle composed by lower layer's orifice plate aperture center.
4. multistage spiracular plate structure according to claim 1, it is characterised in that: each layer orifice plate is that non-angular is smooth
Plate；Or each layer orifice plate is folded to form the V-type with angle along center line and folds orifice plate, V-type folds each plate face phase in orifice plate two sides
The uniform gradient is equipped with to center line.
5. a kind of flooded evaporator of anti-absorbing gas belt liquid, it is characterised in that: have the evaporator of air entry including top, and set
Multistage spiracular plate structure, the multistage spiracular plate structure as described in claim any one of 1-4 set in evaporator tube are set
It is placed in below the air entry.
6. the flooded evaporator of anti-absorbing gas belt liquid according to claim 5, it is characterised in that: multistage spiracular plate structure
In, top layer's orifice plate and evaporator tube are fully welded fixation, and lower layer's orifice plate left and right ends are welded on equal at left and right sides of in evaporator
On gas baffle, and the circumferential direction of lower layer's orifice plate and evaporator tube are fully welded or there are gaps.
7. the flooded evaporator of anti-absorbing gas belt liquid according to claim 5, it is characterised in that: evaporator tube wall is under
Back flow channel is arranged in the region of layer orifice plate contact.
8. the flooded evaporator of anti-absorbing gas belt liquid according to claim 5, it is characterised in that: V-type folds orifice plate and uses V
Type is opening up or mode directed downwardly is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167940.XU CN208804910U (en) | 2018-07-23 | 2018-07-23 | The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167940.XU CN208804910U (en) | 2018-07-23 | 2018-07-23 | The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid |
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| CN208804910U true CN208804910U (en) | 2019-04-30 |
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| CN201821167940.XU Active CN208804910U (en) | 2018-07-23 | 2018-07-23 | The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826760A (en) * | 2018-07-23 | 2018-11-16 | 麦克维尔空调制冷(武汉)有限公司 | The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid |
| CN117168192A (en) * | 2023-10-17 | 2023-12-05 | 河北航研制冷设备有限公司 | Flooded shell-and-tube evaporator capable of improving flow speed of refrigerant |
-
2018
- 2018-07-23 CN CN201821167940.XU patent/CN208804910U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826760A (en) * | 2018-07-23 | 2018-11-16 | 麦克维尔空调制冷(武汉)有限公司 | The multistage flooded evaporator of spiracular plate structure and anti-absorbing gas belt liquid |
| CN117168192A (en) * | 2023-10-17 | 2023-12-05 | 河北航研制冷设备有限公司 | Flooded shell-and-tube evaporator capable of improving flow speed of refrigerant |
| CN117168192B (en) * | 2023-10-17 | 2024-03-19 | 河北航研制冷设备有限公司 | Flooded shell-and-tube evaporator capable of improving flow speed of refrigerant |
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