CN201787774U - Falling film evaporator - Google Patents
Falling film evaporator Download PDFInfo
- Publication number
- CN201787774U CN201787774U CN2010202651517U CN201020265151U CN201787774U CN 201787774 U CN201787774 U CN 201787774U CN 2010202651517 U CN2010202651517 U CN 2010202651517U CN 201020265151 U CN201020265151 U CN 201020265151U CN 201787774 U CN201787774 U CN 201787774U
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- CN
- China
- Prior art keywords
- evaporator
- evaporator body
- utility
- film evaporator
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a falling film evaporator which comprises an evaporator body, wherein an ejector pump is connected with the evaporator body at a position between the bottom and lateral side of the evaporator body; the ejector pump comprises a nozzle and a diffuser; the nozzle is connected with the bottom of the evaporator body and an economizer; and the diffuser is connected with the lateral side of the evaporator body. The utility model has the advantages of being capable of overcoming pipeline pressure drop to reach the upper portion of the evaporator to eject refrigerants downwards.
Description
Technical field
The utility model relates to a kind of downward film evaporator, relates in particular to the structure of this downward film evaporator.
Background technology
As seen from Figure 1: comprise compressor 1, condenser 2, coolant throttle device 3, economizer 4 and evaporimeter 5 compositions in the refrigeration plant.Wherein the major function of evaporimeter is to allow refrigerant be evaporated to gaseous state by liquid state, in this phase transition process, refrigerant need absorb a large amount of latent heat, make gas such as the water or the bittern of heat exchange with it, the refrigerant that heat is evaporated by evaporimeter the time cools off, so evaporimeter is meant a kind of heat exchanger that cold-producing medium (refrigerant) evaporates therein, and its objective is particular fluid is cooled off.
At the handpiece Water Chilling Units of large-scale central air-conditioning use or the bittern unit of large-scale freezing unit use, its evaporimeter mainly contains three kinds of patterns: 1, universe formula evaporimeter; 2, flooded evaporator; 3, downward film evaporator; Wherein full-liquid type and downward film evaporator efficient are higher, and the filling quantity of refrigerant of falling film type half of full-liquid type approximately only, so downward film evaporator is a state-of-the-art a evaporimeter in the present refrigeration plant.
As seen from Figure 2: the distributor 51 above the refrigerant spontaneous evaporation Guan Zhen evenly sprays downwards, and liquid refrigerants flows downward behind the heat exchanger tube surface formation film again, behind the heat of the water of liquid refrigerants in absorbing flowing pipe, is evaporated to gaseous state.Because water is cooled in pipe gradually, so heat transfer temperature difference difference of each position refrigerant rainwater among the Guan Zhen, cause the heat exchange amount and the refrigerant evaporation amount at a position that very big-difference is arranged, even if distributor distributes liquid refrigerants very even, also can't avoid part heat exchanger tube refrigerant surface deficiency to cause mummification, influence the heat exchange effect.Moreover, during the evaporimeter location,, also can cause the partly phenomenon of heat exchanger tube surface mummification if levelness has deviation slightly.
Summary of the invention
The utility model technical issues that need to address have provided a kind of downward film evaporator, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: evaporator body; Between the bottom of described evaporator body and side side, connect a jet pump; Described jet pump comprise with the bottom of evaporator body and the nozzle that links to each other with economizer and with the other diffuser that links to each other of evaporator body side.
Compared with prior art, the beneficial effects of the utility model are: can overcome pressure-drop in pipeline, spray refrigerant downwards and arrive the evaporimeter upper end.
Description of drawings
Fig. 1 is secondary compression refrigeration circulation process figure in the prior art;
Fig. 2 is a downward film evaporator structural representation among Fig. 1;
Fig. 3 is a structural representation of the present utility model;
Fig. 4 is a jet pump structural representation among Fig. 3.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
By Fig. 3, Fig. 4 as seen: the utility model comprises: evaporator body 50; Between the bottom of described evaporator body 50 and side side, connect a jet pump 51; Described jet pump 51 comprise with the bottom of evaporator body 50 and the nozzle 511 that links to each other with economizer and with the other diffuser 512 that links to each other of evaporator body 50 sides.
Jet pump is made of nozzle and diffuser in the utility model, the nozzle of jet pump is used as the coolant throttle device in the utility model, and in the process of step-down throttling, the pressure of refrigerant can effectively be converted to dynamically, that is refrigerant is through reaching the function of current limliting behind the nozzle, the suction of its flow and compressor, the capacity apolegamy is relevant, and through producing the refrigerant jet behind the nozzle, be utilized to drive the liquid refrigerants of base of evaporator again, momentum-exchange is finished in mixed zone through diffuser, through the diffusion anallobar speed can be converted to the pressure energy, so just can overcome pressure-drop in pipeline and arrive the downward refrigerant that sprays in evaporimeter upper end.
The utility model emphasis is with the jet pump of prior art and combining of falling film evaporator function, jet pump has as the refrigerant circulating pump promptly as the coolant throttle device, because the jet pump no-movable part, so reliability is high, more strengthened the practicality of falling film evaporator simultaneously.
Claims (1)
1. a downward film evaporator comprises: evaporator body; It is characterized in that: between the bottom of described evaporator body and side side, connect a jet pump; Described jet pump comprise with the bottom of evaporator body and the nozzle that links to each other with economizer and with the other diffuser that links to each other of evaporator body side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202651517U CN201787774U (en) | 2010-07-20 | 2010-07-20 | Falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202651517U CN201787774U (en) | 2010-07-20 | 2010-07-20 | Falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787774U true CN201787774U (en) | 2011-04-06 |
Family
ID=43819733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202651517U Expired - Lifetime CN201787774U (en) | 2010-07-20 | 2010-07-20 | Falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338512A (en) * | 2010-07-20 | 2012-02-01 | 上海柯茂机械有限公司 | Falling-film evaporator |
| CN108917233A (en) * | 2018-08-13 | 2018-11-30 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner with it |
-
2010
- 2010-07-20 CN CN2010202651517U patent/CN201787774U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338512A (en) * | 2010-07-20 | 2012-02-01 | 上海柯茂机械有限公司 | Falling-film evaporator |
| CN108917233A (en) * | 2018-08-13 | 2018-11-30 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |