CN204063703U - Refrigerant distributor and the downward film evaporator with this refrigerant distributor - Google Patents
Refrigerant distributor and the downward film evaporator with this refrigerant distributor Download PDFInfo
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- CN204063703U CN204063703U CN201420530493.5U CN201420530493U CN204063703U CN 204063703 U CN204063703 U CN 204063703U CN 201420530493 U CN201420530493 U CN 201420530493U CN 204063703 U CN204063703 U CN 204063703U
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- shower
- refrigerant distributor
- spray unit
- mouth spray
- cold
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Abstract
The utility model discloses a kind of refrigerant distributor, comprising: inlet tube and the shower be connected with inlet tube; Inlet tube is used for importing cold-producing medium in shower; Shower is the hollow tube of closed at both ends, and the bottom of shower is provided with multiple mouth spray unit for spraying cold-producing medium, and distributes along the axially spaced-apart of shower.Cold-producing medium flows in shower from inlet tube, and flow out from the mouth spray unit be positioned at bottom shower, because the axially spaced-apart of mouth spray unit along shower distributes, therefore, cold-producing medium sprays on the heat-exchanging tube bundle of evaporimeter equably by from mouth spray unit, thus improves the heat exchange property of evaporimeter.
Description
Technical field
The utility model relates to the refrigerant distributor of refrigeration technology field, particularly a kind of refrigerant distributor and the downward film evaporator with this refrigerant distributor.
Background technology
Shell and tube evaporator is widely used in refrigerating and air conditioning industry, particularly in Large steam compressor bank.The shell and tube evaporator be applied at present on large-size water-cooling unit is generally divided into three kinds: direct-expansion type (dry-expansion), full-liquid type (flooded) and falling film type (falling film).Wherein, direct-expansion type evaporator refrigerant evaporates inside heat exchanger tube, and chilled water cools outside heat exchanger tube.And flooded evaporator and downward film evaporator, chilled water cools inside heat exchanger tube, and cold-producing medium evaporates outside heat exchanger tube.Particularly, the heat exchanger tube of flooded evaporator is submerged in refrigerant liquid usually to realize cold-producing medium evaporation; Downward film evaporator is then provided with refrigerant distributor at refrigerant inlet place, and refrigerant liquid is evenly distributed to heat exchanger tube surface by this refrigerant distributor, forms liquid film and evaporates.
For direct-expansion type and flooded evaporator, downward film evaporator has following advantage: 1, heat exchanger tube need not be immersed in liquid pool, and the impact of gravity head is negligible; 2, make use of thin film evaporation mechanism, heat transfer efficiency is higher, and refrigerant charge is less few.Usually the refrigerant condition entered in falling film evaporator refrigerant distributor is vehicle repair major, and the uniformity that cold-producing medium distributes between each heat exchanger tube of evaporimeter governs the performance of evaporimeter and unit.If the cold-producing medium of vehicle repair major is not assigned on the heat-exchanging tube bundle of falling film evaporator uniformly, a part of heat exchanger tube cold-producing medium quantity delivered will be caused excessive, and another part heat exchanger tube cold-producing medium quantity delivered is not enough, there is " dry spot " phenomenon, the overall heat transfer property of falling film evaporator is reduced.
Therefore, how providing a kind of refrigerant distributor, cold-producing medium is assigned on downward film evaporator heat-exchanging tube bundle equably, is the technical problem that those skilled in the art need solution badly.
Utility model content
In utility model content part, introduce the concept of a series of reduced form, this will further describe in detailed description of the invention part.Utility model content part of the present utility model does not also mean that the key feature and essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain attempting to determine technical scheme required for protection.
The utility model provides a kind of refrigerant distributor, it is characterized in that, comprising:
Inlet tube and the shower be connected with described inlet tube;
Described inlet tube is used for importing cold-producing medium in described shower;
Described shower is the hollow tube of closed at both ends, and the bottom of described shower is provided with multiple mouth spray unit for spraying described cold-producing medium, and distributes along the axially spaced-apart of described shower.
Alternatively, the bottom of described shower is set to arcuate structure, and described mouth spray unit comprises one or more otch, and at least one otch of described mouth spray unit runs through the bottom of described shower.
Alternatively, the otch of each described mouth spray unit is symmetrical along the axis of the bottom of described sparge pipe.
Alternatively, the described kerf of described mouth spray unit is inclination in-line, cross, X-shaped or M shape.
Alternatively, also comprise liquid barrier, described liquid barrier is arranged on described shower both sides along the length direction of described shower.
Alternatively, also comprise secondary distribution device, described secondary distribution device is arranged on below described shower, has multiple distribution openings, for distributing the cold-producing medium of described mouth spray unit spray.
Alternatively, described liquid barrier oliquely downward extends along described shower both sides, and the two ends of described secondary distribution device are arranged on described liquid barrier.
Alternatively, described secondary distribution device is porous plate or steel wire.
The beneficial effects of the utility model are:
The utility model provides a kind of refrigerant distributor, the shower comprising inlet tube and be connected with this inlet tube, this inlet tube is used for importing cold-producing medium in shower, shower is the hollow tube of closed at both ends, and bottom is provided with multiple mouth spray unit for spraying cold-producing medium, and multiple mouth spray unit distributes along the axially spaced-apart of shower.
Cold-producing medium flows in shower from inlet tube, and flow out from the mouth spray unit be positioned at bottom shower, because the axially spaced-apart of mouth spray unit along shower distributes, therefore, cold-producing medium sprays on the heat-exchanging tube bundle of evaporimeter equably by from spray unit, thus improves the heat exchange property of evaporimeter.
Present invention also offers a kind of downward film evaporator, comprise heat exchanger tube and be arranged on the refrigerant distributor on heat exchanger tube, refrigerant distributor is above-mentioned refrigerant distributor, because above-mentioned refrigerant distributor has above-mentioned beneficial effect, therefore, the downward film evaporator with above-mentioned refrigerant distributor enables cold-producing medium more evenly be assigned to accurately on downward film evaporator heat-exchanging tube bundle, thus ensures that downward film evaporator has good overall heat exchange performance.
Accompanying drawing explanation
The following accompanying drawing of the utility model embodiment in this as a part of the present utility model for understanding the utility model.Shown in the drawings of embodiment of the present utility model and description thereof, be used for explaining principle of the present utility model.In the accompanying drawings,
The structural representation of the refrigerant distributor that Fig. 1 provides for a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the shower in Fig. 1;
Fig. 3 is the structural representation of mouth spray unit;
Fig. 4 provides the structural representation of refrigerant distributor for the another kind of embodiment of the utility model;
Fig. 5 is the structural representation of porous plate.
In upper figure, the corresponding relation of Reference numeral and component names is:
1 inlet tube; 2 showers; 21 mouth spray unit; 3 liquid barriers; 4 secondary distribution devices.
Detailed description of the invention
In the following description, give a large amount of concrete details to provide to understand more thoroughly the utility model.But, it will be apparent to one skilled in the art that the utility model embodiment can be implemented without the need to these details one or more.In other example, in order to avoid obscuring with the utility model embodiment, technical characteristics more well known in the art are not described.
In order to thoroughly understand the utility model embodiment, by following description, detailed structure is proposed.Obviously, the execution of the utility model embodiment is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present utility model is described in detail as follows, but except these are described in detail, the utility model can also have other embodiments.
Please refer to Fig. 1 and Fig. 2, the structural representation of the refrigerant distributor that Fig. 1 provides for a kind of embodiment of the utility model; Fig. 2 is the structural representation of the shower in Fig. 1.
As depicted in figs. 1 and 2, the utility model provides a kind of refrigerant distributor, the shower 2 comprising inlet tube 1 and be connected with this inlet tube 1, this inlet tube 1 for importing cold-producing medium in shower 2, shower 2 is the hollow tube of closed at both ends, and bottom is provided with multiple mouth spray unit 21 for spraying cold-producing medium, and multiple mouth spray unit 21 distributes along the axially spaced-apart of shower 2.
Cold-producing medium flows in shower 2 from inlet tube 1, and flow out from the mouth spray unit 21 be positioned at bottom shower 2, because the axially spaced-apart of mouth spray unit 21 along shower 2 distributes, therefore, cold-producing medium sprays on the heat-exchanging tube bundle of evaporimeter equably by from mouth spray unit 21, improves the heat exchange property of evaporimeter.
In order to optimize technique scheme further, in a kind of embodiment of the utility model, the bottom of shower 2 is set to arcuate structure, and mouth spray unit 21 comprises one or more otch, and at least one otch of mouth spray unit 21 runs through the bottom of shower 2.
Arcuate structure bends towards the below of shower 2, namely the heat exchanger tube towards evaporimeter bends, mouth spray unit 21 is arranged on arcuate structure, look from the cross-sectional direction of shower 2 like this, the cold-producing medium sprayed out from shower 2 is fan-shapedly to spray down, can improve the uniformity of spray on the basis expanding spray area further.
Alternatively, in order to increase the uniformity of hydrojet further, in the utility model, the otch of sparge pipe 2 each mouth spray unit 21 is symmetrical along the axis of the bottom of sparge pipe 2.
Please refer to Fig. 3, Fig. 3 is the structural representation of mouth spray unit.
As shown in Figure 3, the shape of above-mentioned mouth spray unit 21 is not limited to, can by various ways, and particularly, the needs according to actual spray flux select inclination in-line, cross, X-shaped or M shape etc.Bottom due to shower 2 is provided with multiple mouth spray unit 21, and mouth spray unit 21 comprises one or more otch, the otch therefore bottom shower 2 can comprise in in-line, cross, X-shaped or M shape one or more.
Alternatively, the refrigerant distributor that the utility model provides also comprises liquid barrier 3, this liquid barrier 3 is arranged on shower 2 both sides along the length direction of shower 2, is used for preventing the cold-producing medium sprayed from shower 2 from directly entering compressor suction duct without heat exchanger tube.
Please refer to Fig. 4-Fig. 6, Fig. 4 provides the structural representation of refrigerant distributor for the another kind of embodiment of the utility model; Fig. 5 is the structural representation of porous plate.
As shown in Figure 4, in a kind of embodiment of the present utility model, refrigerator distributor also comprises secondary distribution device 4, this secondary distribution device 4 is arranged on below shower 2, there is multiple distribution openings, for distributing the cold-producing medium that mouth spray unit 21 sprays, namely secondary distribution being carried out to cold-producing medium.After cold-producing medium carries out secondary distribution by the distribution openings of this secondary distribution device 4 after mouth spray unit 21 sprays, the cold-producing medium arriving heat-exchanging tube bundle becomes dripping type from fountain, make the distribution of cold-producing medium more even on the one hand, the impulsive force of cold-producing medium heat exchanging tube bank on the other hand also weakens greatly.
Secondary distribution device 4 can be realized by various ways, such as, adopt porous plate as shown in Figure 5 or steel wire, known, hole in porous plate and the gap of steel wire are the distribution openings of secondary distribution device 4, flow through to the cold-producing medium on it for spray, namely cold-producing medium drip from the gap of the hole porous plate and steel wire drench and under.Certainly being also not limited to above-mentioned two kinds of forms, also can be other porous media materials.
Alternatively, in a kind of embodiment of the utility model, above-mentioned liquid barrier 3 oliquely downward extends along shower 2 both sides, and the two ends of secondary distribution device 4 are arranged on liquid barrier 3.
Present invention also offers a kind of downward film evaporator, comprise heat exchanger tube and be arranged on the refrigerant distributor on heat exchanger tube, refrigerant distributor is above-mentioned refrigerant distributor, because above-mentioned refrigerant distributor has above-mentioned beneficial effect, therefore, the downward film evaporator with above-mentioned refrigerant distributor enables cold-producing medium more evenly be assigned to accurately on downward film evaporator heat-exchanging tube bundle, thus ensures that downward film evaporator has good overall heat exchange performance.
Be illustrated by above-described embodiment, but should be understood that, above-described embodiment just for the object of illustrating and illustrate, and is not intended to the utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment; more kinds of variants and modifications can also be made, within these variants and modifications all drop on the utility model scope required for protection according to instruction of the present utility model.
Claims (9)
1. a refrigerant distributor, is characterized in that, comprising:
Inlet tube and the shower be connected with described inlet tube;
Described inlet tube is used for importing cold-producing medium in described shower;
Described shower is the hollow tube of closed at both ends, and the bottom of described shower is provided with multiple mouth spray unit for spraying described cold-producing medium, and distributes along the axially spaced-apart of described shower.
2. refrigerant distributor according to claim 1, is characterized in that, the bottom of described shower is set to arcuate structure, and described mouth spray unit comprises one or more otch, and at least one otch of described mouth spray unit runs through the bottom of described shower.
3. refrigerant distributor according to claim 2, is characterized in that, the otch of each described mouth spray unit is symmetrical along the axis of the bottom of described sparge pipe.
4. refrigerant distributor according to claim 3, is characterized in that, the described kerf of described mouth spray unit is inclination in-line, cross, X-shaped or M shape.
5. refrigerant distributor according to claim 1, is characterized in that, also comprises liquid barrier, and described liquid barrier is arranged on described shower both sides along the length direction of described shower.
6. the refrigerant distributor according to any one of claim 1-5, is characterized in that, also comprises secondary distribution device, and described secondary distribution device is arranged on below described shower, has multiple distribution openings, for distributing the cold-producing medium of described mouth spray unit spray.
7. refrigerant distributor according to claim 6, is characterized in that, described liquid barrier oliquely downward extends along described shower both sides, and the two ends of described secondary distribution device are arranged on described liquid barrier.
8. refrigerant distributor according to claim 6, is characterized in that, described secondary distribution device is porous plate or steel wire.
9. a downward film evaporator, comprise heat-exchanging tube bundle and be arranged on the refrigerant distributor above described heat-exchanging tube bundle, it is characterized in that, described refrigerant distributor is the refrigerant distributor described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420530493.5U CN204063703U (en) | 2014-09-15 | 2014-09-15 | Refrigerant distributor and the downward film evaporator with this refrigerant distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420530493.5U CN204063703U (en) | 2014-09-15 | 2014-09-15 | Refrigerant distributor and the downward film evaporator with this refrigerant distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204063703U true CN204063703U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420530493.5U Active CN204063703U (en) | 2014-09-15 | 2014-09-15 | Refrigerant distributor and the downward film evaporator with this refrigerant distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204063703U (en) |
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2014
- 2014-09-15 CN CN201420530493.5U patent/CN204063703U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |