CN201497418U - distributor of flooded evaporator - Google Patents
distributor of flooded evaporator Download PDFInfo
- Publication number
- CN201497418U CN201497418U CN2009201857613U CN200920185761U CN201497418U CN 201497418 U CN201497418 U CN 201497418U CN 2009201857613 U CN2009201857613 U CN 2009201857613U CN 200920185761 U CN200920185761 U CN 200920185761U CN 201497418 U CN201497418 U CN 201497418U
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- Prior art keywords
- distributor
- diversion component
- cylindrical shell
- refrigerant
- guide groove
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Abstract
The utility model relates to a distributor of a flooded evaporator, which is arranged at the bottom of a cylinder body of the evaporator. The distributor extends for a specific distance along the axial direction, the radial direction and the circumferential direction of the cylinder body, the lower part of the distributor is communicated with a refrigerant liquid inlet pipe positioned at the lower part of the cylinder body, a plurality of refrigerant liquid outlets are arranged on the distributor along the axial direction of the cylinder body and are positioned at the lower part of the distributor, part of a refrigerant inside the distributor is gasified and occupies the upper space inside the distributor, and the liquid-state refrigerant flows into the inside of the evaporator from the refrigerant liquid outlets. In the utility model, the distributor can make full use of the space of the bottom of the evaporator, one part of the refrigerant existing in a gas-state form is retained at the bottom of the evaporator, and part of the space inside the evaporator is occupied, thereby raising up the liquid level of the refrigerant, carrying out effective heat exchange on more refrigerants and achieving the aims of saving the refrigerant and enhancing the efficiency of heat exchange.
Description
Technical field
The utility model belongs to art of refrigeration units, the refrigerant distributor on particularly a kind of flooded evaporator that is used for refrigeration plant.
Background technology
Liquid refrigerant absorbs in evaporimeter after the object heat that is cooled, be vaporized into the steam of low-temp low-pressure, enter condenser sucked and be compressed into the steam of high pressure-temperature by compressor after, then, cold-producing medium to cooling medium (water or air) heat release, and is condensed into highly pressurised liquid in condenser, be the cold-producing medium of low-pressure low-temperature through the choke valve throttling, enter heat absorption vaporization in the evaporimeter once more, thereby reach the purpose of circularly cooling.Like this, cold-producing medium is finished a kind of refrigeration cycle through pervaporation, compression, condensation, four basic processes of throttling in system.
At refrigeration technology field, large-scale unit adopts flooded evaporator more at present.Therefore flooded evaporator is better than conventional dry evaporator because refrigerating capacity is big, heat exchange efficiency is high.The structure of existing flooded evaporator is mostly as Chinese patent 200820060553.6 discloses, evaporimeter mainly is made of columnar cylindrical shell, heat exchanger tube and refrigerant distributor etc., the bottom of evaporator tube is provided with the cold-producing medium feed tube, the top of cylindrical shell offers the refrigerant gas outlet, distributor extends along the length direction and the width of cylindrical shell, so that low-temperature refrigerant is evenly distributed in the evaporimeter as far as possible.Yet existing distributor all is the cross section usually is trapezoidal or " protruding " font, and the refrigerant liquid outlet is opened in the dual-side of distributor by last position.
The present inventor is in the middle discovery that studies for a long period of time, the heat exchanger tube of existing evaporimeter all is arranged on the central authorities of cylindrical shell usually, this makes the part of refrigerant that is positioned at the cylindrical shell bottom can't touch heat exchanger tube, thereby carry out effective heat exchange, yet the liquid level of necessity when satisfying evaporator operation, the cold-producing medium that also must keep certain volume and amount of substance participates in circulation, and in certain sense, the cold-producing medium that this part does not participate in heat exchange has caused waste.
Summary of the invention
The purpose of this utility model provides a kind of distributor that can make full use of the base of evaporator space, make base of evaporator keep the cold-producing medium that a part exists with gaseous form, occupy the segment space in the evaporimeter, thereby the liquid level of cold-producing medium is raised, make more cold-producing mediums carry out effective heat exchange, and then reach the purpose of saving cold-producing medium, improving heat exchange efficiency.
For achieving the above object, the technical solution adopted in the utility model is: a kind of distributor of flooded evaporator, it is installed in the bottom of the cylindrical shell of evaporimeter, described distributor is axial along described cylindrical shell, radially and circumferentially all extend specific range, the below of described distributor is connected with the cold-producing medium feed tube that is positioned at described cylindrical shell bottom, a plurality of refrigerant liquids that axially offer of the described cylindrical shell in described distributor upper edge export, described refrigerant liquid outlet is positioned at the bottom of described distributor, the part cold-producing medium gasification of described inner skeleton also occupies the interior upper space of described distributor, and liquid refrigerant flows into described evaporimeter inside from described refrigerant liquid outlet.
The further technical scheme of the utility model is: the side plate that described distributor comprises housing and is positioned at two ends, the described housing left and right sides, the bottom of described housing, side plate and described cylindrical shell surrounds the space of water conservancy diversion refrigerant liquid.
As optimization of the present utility model: described distributor comprises upstream distributor and downstream distributor and the feed liquor guide groove that is arranged side by side in described cylindrical shell bottom, the inner chamber of described upstream distributor and downstream distributor is connected by the feed liquor guide groove, is distributed with a plurality of described refrigerant liquids outlets on the described upstream distributor side relative with the downstream distributor respectively.
More preferably, described feed liquor guide groove comprises end face, bends and extend to two flanks of the bottom of described cylindrical shell from the left and right sides of end face downwards, and described end face and two flanks constitute the bottom land and the cell wall of described feed liquor guide groove respectively.
More preferably, the port of export of described cold-producing medium feed tube is near described upstream distributor, cold-producing medium is from the described upstream distributor described feed liquor guide groove of flowing through, and enter described downstream distributor, be set with the damped part that at least one is used to increase fluid flow resistance in the inner chamber of described upstream distributor.
More preferably, described damped part is the arc that radially is provided with along described cylindrical shell.
More preferably, the lower limb of described arc extends to the bottom of described cylindrical shell always, offers porose on the described arc; Offer breach on the perhaps described arc, make the bottom that has part lower limb and cylindrical shell on the described arc at least have the gap of flowing for refrigerant liquid.
More preferably, described upstream distributor comprises along the 3rd diversion component of the axial arranging of described cylindrical shell and intracavity inter-connection and the 4th diversion component, described downstream distributor comprises along first diversion component of the axial arranging of described cylindrical shell and intracavity inter-connection and second diversion component, described feed liquor guide groove is provided with described damped part in described the 3rd diversion component and the 4th diversion component between described first diversion component, second diversion component, the 3rd diversion component and the 4th diversion component.
More preferably, the length of described the 4th diversion component and first diversion component is respectively less than described the 3rd diversion component and second diversion component, and the number of the damped part that is provided with in described the 4th diversion component is greater than the number of the damped part that is provided with in the 3rd diversion component.
More preferably, also have the deflection plate that the refrigerant liquid deceleration that is used to make in the described feed liquor guide groove enters described downstream distributor on the described feed liquor guide groove, described deflection plate is arranged in the inner chamber of downstream distributor.
The utility model is carrying out refrigeration mode when work: the mixed cold-producing medium of gas-liquid two-phase enters the distributor of flooded evaporator from the cold-producing medium feed tube, evenly is split into 4 the tunnel in distributor.The cold-producing medium of gaseous state is trapped in the top of distributor, and liquid cold-producing medium then flows out from the distributor bottom, enters evaporimeter and participates in heat exchange.The cold medium that carries that temperature is higher in liquid refrigerant and the heat exchanger tube carries out heat exchange, absorbs heat, and is gasified on the tube bank surface, upwards flows then to arrive the outlet of cold-producing medium gaseous state.Cooling medium flowing temperature reduction after the cold-producing medium heat release again flows to the space that needs cooling and realizes refrigeration in the heat exchanger tube.
The utility model has the advantages that: the characteristic that makes full use of the refrigerant air-liquid two-phase, cold-producing medium is arranged cleverly in the space of evaporimeter bottom, occupied the space that occupies by liquid refrigerant originally with the part refrigerant gas, save the purpose that cold-producing medium does not but reduce the heat exchange effect thereby reach, compare with traditional flooded evaporator distributor, distributor of the present utility model can make unit fill about 15% cold-producing medium less.
Description of drawings
Accompanying drawing 1 is the assembling schematic diagram of distributor of the present utility model and evaporator tube;
Accompanying drawing 2 is the explosive view of distributor of the present utility model;
Accompanying drawing 3 is the stereogram (overlooking) of the 4th guiding gutter of the present utility model;
Accompanying drawing 4 is the stereogram (looking up) of the 4th guiding gutter of the present utility model;
Accompanying drawing 5 is the stereogram (overlooking) of first guiding gutter of the present utility model;
Accompanying drawing 6 is the stereogram (looking up) of first guiding gutter of the present utility model;
Accompanying drawing 7 is that A in the accompanying drawing 5 is to view;
Accompanying drawing 8 is the B place partial enlarged drawing in the accompanying drawing 5;
Accompanying drawing 9 is the stereogram of first arc of the present utility model;
Accompanying drawing 10 is the stereogram of second arc of the present utility model;
Accompanying drawing 11 is the stereogram (overlooking) of feed liquor guide groove of the present utility model;
Accompanying drawing 12 is the stereogram (looking up) of feed liquor guide groove of the present utility model;
Wherein: 1, first diversion component; 11, refrigerant liquid outlet; 13, housing; 14, side plate; 2, second diversion component; 23, housing; 3, the 3rd diversion component; 31, refrigerant liquid outlet; 32, damped part; 33, housing; 4, the 4th diversion component; 41, refrigerant liquid outlet; 42, damped part; 421, first arc; 4211, breach; 4212, lower limb; 422, second arc; 4221, hole; 4222, lower limb; 43, housing; 44, side plate; 5, feed liquor guide groove; 51, flank; 52, deflection plate; 53, end face; 54, lower limb; 6, cylindrical shell; 7, cold-producing medium feed tube;
The specific embodiment
Be introduced below in conjunction with accompanying drawing 1 to 12 pairs of the utility model of accompanying drawing.
As shown in Figure 1, the utility model discloses a kind of distributor of flooded evaporator, it is installed in the bottom of the cylindrical shell 6 of evaporimeter, distributor axially, radially and circumferentially all extends specific range along cylindrical shell 6, the below of distributor is connected with the cold-producing medium feed tube 7 that is positioned at cylindrical shell 6 bottoms, a plurality of refrigerant liquids that axially offer of distributor upper edge cylindrical shell 6 export, and are installed on many heat exchanger tube (not shown) in the cylindrical shell 6.The mixed cold-producing medium of gas-liquid two-phase enters in the distributor from cold-producing medium feed tube 7, the gasification of part cold-producing medium also occupies the interior upper space of distributor, because the refrigerant liquid outlet is positioned at the bottom of distributor, specifically the refrigerant liquid outlet is positioned at below half of distributor whole height, liquid refrigerant is from refrigerant liquid outlet inflow evaporator inside, therefore refrigerant gas is closed in the inside of distributor, occupies segment space, thereby saves cold-producing medium.
Say that further distributor is made of steel plate bending and welding, refrigerant distributor can be transported to evaporimeter lower part orchestration space in addition with after the liquid refrigerant uniform distribution.As a kind of optimization, distributor comprises upstream distributor and downstream distributor and the feed liquor guide groove 5 that is arranged side by side in cylindrical shell 6 bottoms, the inner chamber of upstream distributor and downstream distributor is connected by feed liquor guide groove 5, is distributed with a plurality of refrigerant liquids outlets on the upstream distributor side relative with the downstream distributor respectively.
Shown in accompanying drawing 11, feed liquor guide groove 5 comprises end face 53, bends and extend to two flanks 51 of the bottom of cylindrical shell 6 from the left and right sides of end face 53 downwards, end face 53 and two flanks 51 constitute the bottom land and the cell wall of feed liquor guide groove 5 respectively, the lower limb 54 of feed liquor guide groove 5 is a cambered surface, thus its can with the closely cooperating of cylindrical shell 6.
Be further optimization, the port of export of cold-producing medium feed tube 7 is near the upstream distributor, cold-producing medium is from the upstream distributor feed liquor guide groove 5 of flowing through, enter the downstream distributor, for guaranteeing that cold-producing medium divides mobile equilibrium in upstream distributor and downstream distributor, be set with the damped part 32,42 that at least one is used to increase fluid flow resistance in the inner chamber of upstream distributor.The form of damped part there is no fixed constraints, and in the present embodiment, damped part is the arc that radially is provided with along cylindrical shell 6, as shown in Figure 3.
Shown in accompanying drawing 9 and accompanying drawing 10, the form of arc has two kinds, offer breach 4211 on first arc 421, make and have at least the part lower limb 4212 and the bottom of cylindrical shell 6 to have the gap of flowing, the resistance that the increase refrigerant liquid that the arc of this form can be big as far as possible flows on first arc 421 in distributor for refrigerant liquid.And second arc, 422 lower limbs extend to the bottom of described cylindrical shell 6 always, offer porosely 4221 on second arc 422, and arc of form then can make refrigerant gas pass through smoothly in this, and increases the flow resistance of refrigerant liquid.
Be further optimization, the upstream distributor comprises along the 3rd diversion component 3 of the axial arranging of cylindrical shell 6 and intracavity inter-connection and the 4th diversion component 4, the downstream distributor comprises along first diversion component 1 of the axial arranging of cylindrical shell 6 and intracavity inter-connection and second diversion component 2, feed liquor guide groove 5 is between first diversion component 1, second diversion component 2, the 3rd diversion component 3 and the 4th diversion component 4, and above-mentioned four diversion components and feed liquor guide groove 5 roughly are the setting of " worker " font.The structural similarity of first diversion component 1, second diversion component 2 wherein, the structural similarity of the 3rd diversion component 3 and the 4th diversion component 4.The side plate 14,44 that each diversion component includes housing 13,22,33,43 and is positioned at two ends, the housing left and right sides, the bottom of housing, side plate and cylindrical shell 6 surrounds the space of water conservancy diversion refrigerant liquid.The inner chamber of space that enclosure interior surrounded and refrigerant liquid outlet, refrigerant gas outlet, evaporimeter communicates.
Further, be provided with arc in the 3rd diversion component 3 and the 4th diversion component 4.The layout of arc is very important to the branch mobile equilibrium of cold-producing medium.If curved baffle is not set, because resistance is different, most of cold-producing medium will enter the 3rd diversion component 3 and the 4th diversion component 4 near the cold-producing medium inlet, and the fraction cold-producing medium enters first diversion component 1, second diversion component 2 away from the cold-producing medium inlet.Cold-producing medium distributes uneven heat exchange property to system that negative effect is arranged.In order to solve this defective, at the 3rd diversion component 3 and the 4th diversion component 4 arc is installed, to increase near-end distributing trough resistance, reduce near-end distributing trough flow, strengthen remote allocation concentrated flow amount.
More preferably, the length of the 4th diversion component 4 and first diversion component 1 is respectively less than the number of the arcs that are provided with in the 3rd diversion component 3 and second diversion component, 2, the four diversion components 4 number greater than the arcs that are provided with in the 3rd diversion component 3.In the present embodiment, because the length of the 3rd diversion component 3 is longer, therefore portion's flow resistance is bigger within it for cold-producing medium, be the further distribution of balanced system cryogen, the 4th diversion component 4 inside are provided with first arc 421 and second arc 422, first arc 421 is positioned at the upstream of second arc 422, and one first arc 421 is set in the 3rd diversion component 4.
More preferably, also have on the feed liquor guide groove 5 and be used to make the 5 interior refrigerant liquids decelerations of feed liquor guide groove to enter the deflection plate 52 of downstream distributor, this deflection plate 52 can for arc also can for by two mutually in obtuse angle flat boards form, deflection plate 52 is arranged in the inner chamber of downstream distributor, 52 pairs of cold-producing mediums that enter the downstream distributor of deflection plate have guide functions, can prevent that cold-producing medium from directly hitting cylindrical shell 6, makes shunting more smooth simultaneously, reduce flow losses, also can reduce the liquid refrigerant impact noise.
Claims (10)
1. the distributor of a flooded evaporator, it is installed in the bottom of the cylindrical shell (6) of evaporimeter, described distributor is axial along described cylindrical shell (6), radially and circumferentially all extend specific range, the below of described distributor is connected with the cold-producing medium feed tube (7) that is positioned at described cylindrical shell (6) bottom, a plurality of refrigerant liquids that axially offer of the described cylindrical shell in described distributor upper edge (6) export (11,31,41), it is characterized in that: described refrigerant liquid outlet (11,31,41) be positioned at the bottom of described distributor, the part cold-producing medium gasification of described inner skeleton also occupies the interior upper space of described distributor, and liquid refrigerant exports (11 from described refrigerant liquid, 31,41) flow into described evaporimeter inside.
2. the distributor of flooded evaporator according to claim 1, it is characterized in that: the side plate (44) that described distributor comprises housing (43) and is positioned at described housing (43) two ends, the left and right sides, the bottom of described housing (43), side plate (44) and described cylindrical shell (6) surrounds the space of water conservancy diversion refrigerant liquid.
3. the distributor of flooded evaporator according to claim 1, it is characterized in that: described distributor comprises upstream distributor and downstream distributor and the feed liquor guide groove (5) that is arranged side by side in described cylindrical shell (6) bottom, the inner chamber of described upstream distributor and downstream distributor is connected by feed liquor guide groove (5), is distributed with a plurality of described refrigerant liquids outlets (11,31,41) on the described upstream distributor side relative with the downstream distributor respectively.
4. the distributor of flooded evaporator according to claim 3, it is characterized in that: described feed liquor guide groove (5) comprises end face (53), bends and extend to two flanks (51) of the bottom of described cylindrical shell (6) from the left and right sides of end face (53) downwards, and described end face (53) and two flanks (51) constitute the bottom land and the cell wall of described feed liquor guide groove (5) respectively.
5. the distributor of flooded evaporator according to claim 3, it is characterized in that: the port of export of described cold-producing medium feed tube (7) is near described upstream distributor, cold-producing medium is from the described upstream distributor described feed liquor guide groove of flowing through, enter described downstream distributor, be set with at least one damped part that is used to increase fluid flow resistance (32,42) in the inner chamber of described upstream distributor.
6. the distributor of flooded evaporator according to claim 5 is characterized in that: described damped part (32,42) is the arc that radially is provided with along described cylindrical shell (6).
7. the distributor of flooded evaporator according to claim 6, it is characterized in that: offer breach (4211) on the described arc (421), make to have at least the part lower limb (4212) and the bottom of cylindrical shell (6) to have the gap of flowing on the described arc (421) for refrigerant liquid; The lower limb (4222) of perhaps described arc (422) extends to the bottom of described cylindrical shell (6) always, offers the hole of passing through for cold-producing medium (4221) on the described arc (422).
8. the distributor of flooded evaporator according to claim 5, it is characterized in that: described upstream distributor comprises along the 3rd diversion component (3) of the axial arranging of described cylindrical shell (6) and intracavity inter-connection and the 4th diversion component (4), described downstream distributor comprises along first diversion component (1) of the axial arranging of described cylindrical shell (6) and intracavity inter-connection and second diversion component (2), described feed liquor guide groove (5) is positioned at described first diversion component (1), second diversion component (2), between the 3rd diversion component (3) and the 4th diversion component (4), be provided with described damped part (32 in described the 3rd diversion component (3) and the 4th diversion component (4), 42).
9. the distributor of flooded evaporator according to claim 8, it is characterized in that: the length of described the 4th diversion component (4) and first diversion component (1) is respectively less than described the 3rd diversion component (3) and second diversion component (2), and the number of the damped part (42) that is provided with in described the 4th diversion component (4) is greater than the number of the damped part (32) that is provided with in the 3rd diversion component (3).
10. the distributor of flooded evaporator according to claim 3, it is characterized in that: also have the deflection plate (52) that the refrigerant liquid deceleration that is used to make in the described feed liquor guide groove (5) enters described downstream distributor on the described feed liquor guide groove (5), described deflection plate (52) is arranged in the inner chamber of downstream distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201857613U CN201497418U (en) | 2009-07-11 | 2009-07-11 | distributor of flooded evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201857613U CN201497418U (en) | 2009-07-11 | 2009-07-11 | distributor of flooded evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201497418U true CN201497418U (en) | 2010-06-02 |
Family
ID=42440623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201857613U Expired - Fee Related CN201497418U (en) | 2009-07-11 | 2009-07-11 | distributor of flooded evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201497418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022866A (en) * | 2011-01-07 | 2011-04-20 | 福建雪人股份有限公司 | Round liquid inlet pipe of flooded evaporator |
| CN102538560A (en) * | 2010-12-30 | 2012-07-04 | 林德股份公司 | Distribution system and heat exchanger apparatus |
| CN110530066A (en) * | 2019-09-11 | 2019-12-03 | 上海工程技术大学 | Low pressure refrigerant flooded evaporator |
-
2009
- 2009-07-11 CN CN2009201857613U patent/CN201497418U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538560A (en) * | 2010-12-30 | 2012-07-04 | 林德股份公司 | Distribution system and heat exchanger apparatus |
| US9157690B2 (en) | 2010-12-30 | 2015-10-13 | Linde Aktiengesellschaft | Distribution system and heat exchanger apparatus |
| CN102022866A (en) * | 2011-01-07 | 2011-04-20 | 福建雪人股份有限公司 | Round liquid inlet pipe of flooded evaporator |
| CN102022866B (en) * | 2011-01-07 | 2012-10-03 | 福建雪人股份有限公司 | Round liquid inlet pipe of flooded evaporator |
| CN110530066A (en) * | 2019-09-11 | 2019-12-03 | 上海工程技术大学 | Low pressure refrigerant flooded evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20180711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |