CN202432765U - Multi-section air chamber structure for dry evaporators - Google Patents
Multi-section air chamber structure for dry evaporators Download PDFInfo
- Publication number
- CN202432765U CN202432765U CN 201120529402 CN201120529402U CN202432765U CN 202432765 U CN202432765 U CN 202432765U CN 201120529402 CN201120529402 CN 201120529402 CN 201120529402 U CN201120529402 U CN 201120529402U CN 202432765 U CN202432765 U CN 202432765U
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- air chamber
- tube
- end air
- chamber structure
- interval
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Abstract
The utility model discloses a multi-section air chamber structure for dry evaporators, which is suitable for screw dry evaporation refrigeration units as well as refrigeration units needing dry evaporation to produce cold sources. The multi-section air chamber structure comprises a liquid inflow tube, an air return tube, a front end air chamber, a tube plate, a heat transfer tube, a casing and a rear end air chamber, wherein the lower part of the front end air chamber of an evaporator is divided into two or more than two sections by a partition plate. When a unit operates, each independent section feeds liquid in cooperation with independent liquid inflow expansion valves; and through the volume adjustment, the closing and the opening of the expansion valves, the refrigerating output and the outflow water temperature of the unit can be adjusted in large ranges. The whole device is simply structured, conveniently adjustable and functionally reliable.
Description
Affiliated technical field
The utility model relates to the dry evaporator air chamber structure between a kind of multi-region, is applicable to screw rod dry type sweat cooling unit and needs dry type to evaporate the refrigeration unit of output low-temperature receiver.
Background technology
Dry evaporator has oil return characteristics easily, in screw bolt refrigerating machine by adapted comparatively widely.In dry evaporator, cold-producing medium is at boiling in ducts, and refrigerating medium flows in shell space, and refrigerant liquid gets into from the bottom of protecgulum air chamber, and through vaporization after once (or repeatedly) comes and goes, the steam of generation is derived from the muffler on air chamber top; And after general dry evaporator cold-producing medium gets into from protecgulum air chamber bottom, be inhaled in the heat exchanger tube that its underpart comprises; Usually it is interval that the cold-producing medium in the pipe must remain on certain flowing velocity scope, is lower than the velocity interval interval, and the lubricating oil that is mixed with in the cold-producing medium can not be taken back compressor well, makes the compressor oil starvation and stop normal operation; Be higher than the velocity interval interval,, thereby reduced coefficient of refrigerating performance because of the increase of flow resistance.Therefore, the screw bolt refrigerant unit of existing this dry evaporator, the unit refrigerating capacity be adjusted in the flowing velocity that also is limited by tube refrigerant to a great extent, rather than only be embodied on the energy adjustment to compressor self.
Summary of the invention
The purpose of the utility model is to provide a kind of can make dry evaporator air chamber structure between the multi-region that refrigerating capacity and leaving water temperature wide region regulate.
The utility model adopts such technical scheme to realize: dry evaporator air chamber structure between a kind of multi-region; Comprise feed tube, muffler, front end air chamber, tube sheet, heat exchanger tube, housing and rear end air chamber, it is characterized in that: the front end air chamber bottom of evaporimeter is separated into two intervals with dividing plate or is interval more than two; Each separate portions cooperates independently, and the feed liquor expansion valve carries out feed liquor.
Above-mentioned front end air chamber bottom is separated into two intervals with dividing plate or is interval more than two, when front end air chamber and tube sheet assemble connect together after, be not connected between each interval;
Each separate portions cooperates independently the feed liquor expansion valve can independently realize size adjustment, turn-off and open, and cooperates the compressor energy adjustment, the adjusting of realization unit wide region on refrigerating capacity and leaving water temperature.
Each separate portions cooperates independently that the feed liquor expansion valve carries out feed liquor when unit operation; Unit is carrying out energy adjustment; When changing feed liquor amount size; Through controlling the size adjustment of the interval expansion valve of each independent feed liquor, realize that screw rod dry type sweat cooling unit is among a small circle adjusting on refrigerating capacity and the leaving water temperature: in less feed liquor amount with greatly during the feed liquor amount, through the shutoff and the unlatching of expansion valve; Directly change the radical of feed liquor heat exchanger tube in the evaporimeter; The flowing velocity that remains tube refrigerant is interval in designing requirement flowing velocity scope, guarantees that unit normally moves, and realizes that unit has adjusting in a big way on refrigerating capacity and leaving water temperature.
The utility model is through adopting dry evaporator air chamber structure between multi-region; And use and the independently synthetic operation of the interval expansion valve that is complementary; No matter guaranteeing the increase of unit refrigerating capacity perhaps reduces; Be that unit all can keep efficient to be in optimum under the many or few situation of refrigerant liquid flow, realize the wide region refrigerating capacity of refrigeration unit, the operation of different leaving water temperature operating modes.Whole apparatus structure is simple, and is easy to adjust, reliable in function.
Description of drawings
Fig. 1 dry evaporator front view;
The A of Fig. 2 Fig. 1 is to the view section;
Among the figure, 1-feed tube, 2-muffler, 3-front end air chamber, 4-tube sheet, 5-heat exchanger tube, 6-housing, 7-rear end air chamber, 8-dividing plate.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further, but the utility model not only is confined to this.
Embodiment; Dry evaporator air chamber structure between a kind of multi-region; Comprise feed tube 1, muffler 2, front end air chamber 3, tube sheet 4, heat exchanger tube 5, housing 6 and rear end air chamber 7, it is characterized in that: front end air chamber 3 bottoms are divided into three intervals with dividing plate 8, i.e. I district, II district and III district; After 4 assemblings of front end air chamber 3 and tube sheet connect together, not connected between three subregions; And each separate portions is furnished with independently respectively, and the feed liquor expansion valve carries out feed liquor.
Visible from Fig. 1, when unit operation, the liquid refrigerant after throttling gets into front end air chamber 3 bottoms from the left side; The heat exchanger tube 5 that is positioned at the bottom sucks; Again after rear end air chamber 7 turns to, the heat exchanger tube 5 on housing 6 tops of flowing through, finally the top muffler 2 from front end air chamber 3 returns compressor.When unit when the design point operating mode is moved, open the expansion valve in I district and II district, be positioned at before front end air chamber 3 I districts and the II district two groups independently expansion valve send into the heat exchanger tube 5 that I district and II district are comprised after will both quantitative cold-producing medium throttling; When the unit operating mode changed, when the feed liquor amount that promptly flows into cold-producing medium changed, between the flow rates that still limits when the design like the flow velocity of heat exchanger tube 5 refrigeration machines, the size adjustment through expansion valve satisfied working conditions change; When the unit refrigerating capacity to reducing the direction wide variety; And the flow velocity of heat exchanger tube 5 cold-producing mediums is when being lower than the designing requirement scope; Through closing the interval expansion valve of one group of independence I interval or II to reduce the sectional area of heat exchanger tube 5 liquid; Guarantee that with this cold-producing medium flow velocity is in the design current velocity scope all the time, keeps unit and normally moves; When the unit refrigerating capacity to the augment direction wide variety; And when the flow velocity of cold-producing medium is higher than the designing requirement scope in the heat exchanger tube 6; Open the expansion valve in III district, with subregion of the many increases of air chamber, to increase the sectional area of heat exchanger tube 6 feed liquors; Guarantee that the cold-producing medium flow velocity is in the design current velocity scope all the time, keeps unit and normally moves.
Claims (2)
1. dry evaporator air chamber structure between a multi-region; Comprise feed tube (1), muffler (2), front end air chamber (3), tube sheet (4), heat exchanger tube (5), housing (6) and rear end air chamber (7), it is characterized in that: front end air chamber (3) bottom of evaporimeter is separated into two intervals with dividing plate (8) or is interval more than two; Each interval cooperates independently, and the feed liquor expansion valve carries out feed liquor.
2. dry evaporator air chamber structure between a kind of multi-region as claimed in claim 1 is characterized in that: front end air chamber (3) bottom of evaporimeter is separated into two intervals with dividing plate (8) or is interval more than two, and is not connected between each interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120529402 CN202432765U (en) | 2011-12-17 | 2011-12-17 | Multi-section air chamber structure for dry evaporators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120529402 CN202432765U (en) | 2011-12-17 | 2011-12-17 | Multi-section air chamber structure for dry evaporators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432765U true CN202432765U (en) | 2012-09-12 |
Family
ID=46782205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120529402 Expired - Fee Related CN202432765U (en) | 2011-12-17 | 2011-12-17 | Multi-section air chamber structure for dry evaporators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432765U (en) |
Cited By (2)
| 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 |
| CN113357850A (en) * | 2021-06-23 | 2021-09-07 | 特灵空调系统(中国)有限公司 | Evaporator and water chilling unit |
-
2011
- 2011-12-17 CN CN 201120529402 patent/CN202432765U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN113357850A (en) * | 2021-06-23 | 2021-09-07 | 特灵空调系统(中国)有限公司 | Evaporator and water chilling unit |
| CN113357850B (en) * | 2021-06-23 | 2023-08-25 | 特灵空调系统(中国)有限公司 | Evaporator and water chilling unit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20161217 |