CN202915607U - Dry type evaporator - Google Patents
Dry type evaporator Download PDFInfo
- Publication number
- CN202915607U CN202915607U CN 201220533660 CN201220533660U CN202915607U CN 202915607 U CN202915607 U CN 202915607U CN 201220533660 CN201220533660 CN 201220533660 CN 201220533660 U CN201220533660 U CN 201220533660U CN 202915607 U CN202915607 U CN 202915607U
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- evaporation
- knockout
- tube
- face
- capping
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Abstract
The utility model discloses a dry type evaporator. The dry type evaporator comprises a barrel body and a sealing cover sealed on the head portion of the barrel body, a plurality of evaporation pipes are arranged in the barrel body, an air return pipe and a liquid inlet pipe are arranged on the sealing cover, a pipe plate is lined between the sealing cover and the head portion of the barrel body, a plurality of evaporation pipe holes are arranged on the pipe plate at positions corresponding to the evaporation pipes, the evaporation pipes are inserted into the evaporation pipe holes, a first stage liquid dispenser is arranged in the liquid inlet pipe, and a second stage liquid dispenser and a third stage liquid dispenser are sequentially arranged between the rear end of the liquid inlet pipe and the pipe plate. The dry type evaporator is provided with a plurality of stages of liquid dispensers, by means of the three stage liquid dispensing, liquid refrigerating fluid is evenly distributed to the inside of each evaporation pipe, heat exchange areas of each evaporation pipe can be effectively utilized, economical efficiency of the evaporator is improved, and simultaneously the liquid refrigerating fluid is prevented from entering a compressor. The evaporator with the structure has the advantages of being simple in structure, even in liquid dispensing, fully utilized in evaporator, and higher in economical efficiency.
Description
Technical field
The utility model relates to field of Refrigeration and Air-conditioning.
Background technology
Dry evaporator is used more in vapour compression refrigeration system at present.One vapour compression refrigeration system comprises: compressor, condenser, throttle mechanism, dry evaporator.
The steam of boil down to HTHP enters condenser after the low-temp low-pressure superheated vapor that compressor is ended evaporation in the dry evaporator, the suction.
Condenser will carry out condensation from the exhaust of compressor, and refrigerant gas is condensed into middle temperature highly pressurised liquid.The described liquid throttle mechanism of flowing through by having certain pressure drop behind the throttle mechanism and can causing further excessively coldly, is carried lower, the saturated two phase refrigerant of relative temperature from throttle mechanism to evaporimeter.
The two-phase refrigerant mixture that is delivered to evaporimeter contact with the tube bank that is arranged on evaporimeter inside is inner, and the higher medium of relative temperature is mobile outside tube bank, and this medium for example is water.According to the second law of thermodynamics, the heat of medium is passed to the interior two phase refrigerant of tube bank with the spontaneous tube bank of passing through.And the purpose of vapour compression refrigeration system is to cool off above-mentioned medium exactly.
The cold-producing medium that relative temperature is lower in the evaporimeter tube bank and the outside higher medium of relative temperature of tube bank of flowing through carry out exchange heat, cause cold-producing medium absorbing medium heat and evaporate, medium release heat and temperature reduces.Draw evaporimeter, sucked by compressor and absorb the refrigerant gas of heat of vaporization this moment, finish a kind of refrigeration cycle.
For a long time, dry evaporator is with its unique advantage, for example refrigerant charge is few, cold-producing medium flows in tube bank, is blended in lubricating oil in the cold-producing medium and can be directly sucked by compressor and need not to arrange separately oil treatment provisions, control certain occupation rate that has in market such as simple.
Dry evaporator is comprised of capping, bobbin carriage, housing, tube sheet and many evaporation tubes.Chilled water is walked in the housing, outside the evaporation tube, cold-producing medium is walked evaporation tube inside.Liquid refrigerant is difficult to it is assigned in the every evaporation tube uniformly, the evaporation tube area that the cold-producing medium distribution is few is wasted and the many evaporation tube area deficiencies of cold-producing medium distribution, and this is so that heat exchange efficiency decline, economy variation even the part cold-producing medium of dry evaporator are fully evaporated and make liquid refrigerant directly be caused compressor band liquid to move by the compressor suction and damage compressor.
The utility model content
Technical problem to be solved in the utility model just provides a kind of dry evaporator, cold-producing medium can be dispensed in the every evaporation tube uniformly, promote dry evaporator heat exchange efficiency, promote its economy, and effectively avoid the operation of compressor air suction band liquid.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of dry evaporator, comprise cylindrical shell and be covered in the capping of cylindrical shell head, be provided with some evaporation tubes in the described cylindrical shell, described capping is provided with muffler and feed tube, it is characterized in that: liner has tube sheet between described capping and the cylindrical shell head, the corresponding evaporation tube of described tube sheet is provided with several evaporation pores, evaporation tube inserts the evaporation pore, be provided with the one-level knockout in the described feed tube, also be provided with in turn secondary knockout and three grades of knockouts between described feed tube rear end and the tube sheet.
As preferably, described capping rear end face is provided with a circular groove, one dividing plate is divided into up and down two halves with groove, wherein the first half groove and tube sheet surround the return-air chamber, muffler is communicated with the return-air chamber, the latter half groove and tube sheet surround a minute sap cavity, and feed tube is communicated with a minute sap cavity, and described secondary knockout and three grades of knockouts are located in minute sap cavity.
As preferably, described one-level knockout and secondary knockout are cruciate cylinder.
As preferably, a face of described one-level knockout overlaps with the f face of feed tube, and and capping inner groovy bottom surface g at grade.
As preferably, the end face b of described secondary knockout overlaps with capping inner groovy bottom surface g, simultaneously and the coincidence of a face of one-level knockout.
As preferably, described three grades of knockouts comprise the tabular body, and described body is provided with the separatory hole of several and the corresponding setting of evaporation pore, and the diameter in described separatory hole is less than the diameter of described evaporation pore, center, separatory hole and evaporation tube center superposition.
As preferably, described three grades of knockout end face e overlap with the tube sheet anterior end surface, and end face d overlaps with the c face of secondary knockout.
Dry evaporator of the present utility model is provided with multistage knockout, three grades of separatory mechanisms are set between capping and the tube sheet, wherein, it is inner that the one-level knockout is arranged on the capping feed tube, secondary knockout and three grades of knockouts are arranged on dividing in the sap cavity between capping and the tube sheet, by three grades of separatory, liquid refrigerant is assigned to every evaporation tube inside uniformly, can effectively utilize the heat exchange area of every evaporation tube, avoid liquid refrigerant to enter compressor when improving the evaporimeter economy, the evaporimeter of this kind structure has simple in structure, separatory is even, evaporation tube is fully used, the characteristics that economy is higher.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is the section plan with the dry evaporator embodiment 1 of multistage knockout;
Fig. 2 is the enlarged drawing of partial view A among Fig. 1;
Fig. 3 is one-level knockout structural representation;
Fig. 4 is secondary knockout structural representation;
Fig. 5 is three grades of knockout structural representations;
Fig. 6 is the relative position figure of one-level knockout and feed tube;
Fig. 7 is the relative position figure of one-level, secondary knockout and capping, feed tube;
Fig. 8 is with the axonometric drawing of the dry evaporator embodiment 1 of multistage knockout (one road feed liquor);
Fig. 9 is with the axonometric drawing of the dry evaporator embodiment 2 of multistage knockout (two-way feed liquor);
Figure 10 is with the axonometric drawing of the dry evaporator embodiment 3 of multistage knockout (four road feed liquors).
The specific embodiment
Specify the embodiment 1 of a kind of dry evaporator of the utility model below in conjunction with Fig. 1 to Fig. 8, the capping 4 that it comprises cylindrical shell 10 and is covered in the cylindrical shell head, be provided with some evaporation tubes 9 in the described cylindrical shell 10, described capping is provided with muffler 1 and feed tube 2, liner has tube sheet 7 between described capping 4 and cylindrical shell 10 heads, the corresponding evaporation tube of described tube sheet is provided with several evaporation pores, evaporation tube 9 inserts the evaporation pore, be provided with one-level knockout 3 in the described feed tube 2, also be provided with in turn secondary knockout 5 and three grades of knockouts 6 between described feed tube rear end and the tube sheet.Cylindrical shell 10 heads are provided with flange 8, and the cylindrical shell afterbody is provided with shrouding 11.Evaporation tube 9 expanded joints are in the evaporation pore of tube sheet 7, and cylindrical shell 10 welds with cylindrical shell 10 with flange 8 welding, shrouding 11.
Described capping 4 rear end faces are provided with a circular groove, one dividing plate is divided into up and down two halves with groove, wherein the first half groove and tube sheet surround the return-air chamber, muffler 1 is communicated with the return-air chamber, the latter half groove and tube sheet surround a minute sap cavity, feed tube 2 is communicated with a minute sap cavity, and described secondary knockout 5 and three grades of knockouts 6 are located in minute sap cavity.Described one-level knockout 3 and secondary knockout 5 are cruciate cylinder.The a face of described one-level knockout 3 overlaps with the f face of feed tube 2, and and capping 4 inner groovy bottom surface g at grade.The end face b of described secondary knockout 5 overlaps with capping 4 inner groovy bottom surface g, and a face of while and one-level knockout 3 overlaps.
Gas-liquid two-phase cold-producing medium through throttle mechanism enters one-level knockout 3 by feed tube 2, one-level knockout 3 will be divided into from the gas-liquid two-phase cold-producing medium of feed tube 2 a plurality of gas-liquid two-phase cold-producing mediums district, and the gas-liquid two-phase cold-producing medium forms vortex so that distribution of refrigerant is uneven because of disturbance under the reduction high flow rate in the subregion.
And secondary knockout 5 will divide sap cavity to be divided into a plurality of zones, like this gas-liquid two-phase cold-producing medium will be divided into a plurality of Gas-liquid phase regions, for the many piece evaporation tubes 9 of expanded joint on tube sheet 7 are carried out regional feed flow, further improve the separatory uniformity.
Described three grades of knockouts 6 comprise the tabular body, the shape of tabular body is corresponding with minute sap cavity cross sectional shape, be semicircle in the present embodiment, described body is provided with several and the separatory hole of evaporating the corresponding setting of pore, the diameter in described separatory hole is less than the diameter of described evaporation pore, center, separatory hole and evaporation tube center superposition.Described three grades of knockout end face e overlap with tube sheet 7 anterior end surface, and end face d overlaps with the c face of secondary knockout 5.Three grades of knockouts 6 are dispensed to every evaporation tube 9 uniformly with the cold-producing medium in a plurality of gas-liquid two-phase cold-producing mediums district.
Liquid refrigerant is by feed tube 2, and one-level knockout 3 is divided into four zones, after enter dividing in the sap cavity between capping 4 and the tube sheet 7, be divided into four feed flow zones by secondary knockout 5, be assigned to uniformly in the every evaporation tube 9 by three grades of knockouts 6 afterwards.
Specify the embodiment 2 of the utility model dry evaporator below in conjunction with Fig. 9, it is from the different of embodiment 1, two groups of feed tubes 2 of dry evaporator band, realize the two-way feed liquor, be equipped with one-level knockout 3 in two groups of feed tubes 2, corresponding is provided with two secondary knockouts 5 in minute sap cavity, and these two secondary knockouts 5 can be Split type structure, certainly preferably be made into integrative-structure, and three grades of knockouts 6 can only arrange one.
Specify the embodiment 3 of the utility model dry evaporator below in conjunction with Figure 10, it can increase by two feed tubes 2 on the basis of embodiment 2, such four groups of feed tubes 2 of dry evaporator band, realize four road feed liquors, be equipped with one-level knockout 3 in four groups of feed tubes 2, be provided with four secondary knockouts 5 in minute sap cavity, these four secondary knockouts 5 can be Split type structure, certainly preferably be made into integrative-structure, and three grades of knockouts 6 can only arrange one.
Although the utility model is to describe according to the better and alternative case study on implementation that changes, but be understandable that, all will drop in the content that discloses in this place other variation of the present utility model and change, and scope of the present utility model will be not limited only to described case study on implementation.
Claims (7)
1. dry evaporator, comprise cylindrical shell and be covered in the capping of cylindrical shell head, be provided with some evaporation tubes in the described cylindrical shell, described capping is provided with muffler and feed tube, it is characterized in that: liner has tube sheet between described capping and the cylindrical shell head, and the corresponding evaporation tube of described tube sheet is provided with several evaporation pores, and evaporation tube inserts the evaporation pore, be provided with the one-level knockout in the described feed tube, also be provided with in turn secondary knockout and three grades of knockouts between described feed tube rear end and the tube sheet.
2. evaporimeter according to claim 1, it is characterized in that: described capping rear end face is provided with a circular groove, one dividing plate is divided into up and down two halves with groove, wherein the first half groove and tube sheet surround the return-air chamber, muffler is communicated with the return-air chamber, the latter half groove and tube sheet surround a minute sap cavity, and feed tube is communicated with a minute sap cavity, and described secondary knockout and three grades of knockouts are located in minute sap cavity.
3. evaporimeter according to claim 2, it is characterized in that: described one-level knockout and secondary knockout are cruciate cylinder.
4. evaporimeter according to claim 3, it is characterized in that: a face of described one-level knockout overlaps with the f face of feed tube, and and capping inner groovy bottom surface g at grade.
5. evaporimeter according to claim 4, it is characterized in that: the end face b of described secondary knockout overlaps with capping inner groovy bottom surface g, simultaneously and the coincidence of a face of one-level knockout.
6. evaporimeter according to claim 5, it is characterized in that: described three grades of knockouts comprise the tabular body, described body is provided with several and the separatory hole of evaporating the corresponding setting of pore, the diameter in described separatory hole is less than the diameter of described evaporation pore, center, separatory hole and evaporation tube center superposition.
7. evaporimeter according to claim 6, it is characterized in that: described three grades of knockout end face e overlap with the tube sheet anterior end surface, and end face d overlaps with the c face of secondary knockout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533660 CN202915607U (en) | 2012-10-18 | 2012-10-18 | Dry type evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533660 CN202915607U (en) | 2012-10-18 | 2012-10-18 | Dry type evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915607U true CN202915607U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533660 Expired - Lifetime CN202915607U (en) | 2012-10-18 | 2012-10-18 | Dry type evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915607U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277944A (en) * | 2013-05-08 | 2013-09-04 | 杭州赛富特设备有限公司 | Dry-type evaporator |
| CN103994610A (en) * | 2014-06-05 | 2014-08-20 | 南通四方冷链装备股份有限公司 | Evaporator |
| CN105241128A (en) * | 2015-10-27 | 2016-01-13 | 浙江英谷节能设备有限公司 | Two-phase distribution dry-type evaporator |
| CN106766415A (en) * | 2016-12-20 | 2017-05-31 | 江苏世林博尔制冷设备有限公司 | Knockout system is set up after a kind of dry type unit evaporator |
-
2012
- 2012-10-18 CN CN 201220533660 patent/CN202915607U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277944A (en) * | 2013-05-08 | 2013-09-04 | 杭州赛富特设备有限公司 | Dry-type evaporator |
| CN103994610A (en) * | 2014-06-05 | 2014-08-20 | 南通四方冷链装备股份有限公司 | Evaporator |
| CN105241128A (en) * | 2015-10-27 | 2016-01-13 | 浙江英谷节能设备有限公司 | Two-phase distribution dry-type evaporator |
| CN105241128B (en) * | 2015-10-27 | 2018-02-27 | 浙江英谷节能设备有限公司 | A kind of two-phase partitioning dry evaporator |
| CN106766415A (en) * | 2016-12-20 | 2017-05-31 | 江苏世林博尔制冷设备有限公司 | Knockout system is set up after a kind of dry type unit evaporator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
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| CX01 | Expiry of patent term |