CN203163349U - Falling film evaporator provided with unique gas passages - Google Patents
Falling film evaporator provided with unique gas passages Download PDFInfo
- Publication number
- CN203163349U CN203163349U CN 201220731058 CN201220731058U CN203163349U CN 203163349 U CN203163349 U CN 203163349U CN 201220731058 CN201220731058 CN 201220731058 CN 201220731058 U CN201220731058 U CN 201220731058U CN 203163349 U CN203163349 U CN 203163349U
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- heat exchange
- tubes
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- exchanger tube
- heat exchanger
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Abstract
The utility model discloses a falling film evaporator provided with unique gas passages, which comprises a casing, wherein a refrigerant distributor is arranged at the upper part inside the casing; a horizontally laid heat exchange pipe group is arranged below the refrigerant distributor, and comprises a first process heat exchange pipe group at the bottom and a top part heat exchange pipe group; a first gas passage is reserved between the first process heat exchange pipe group and the top part heat exchange pipe group; and the distance between heat exchange piped on the top layer of the first process heat exchange pipe group and heat exchange pipe on the bottom layer of the top part heat exchange pipe group is 75%-100% of the external diameter of each heat exchange pipe. According to the falling film evaporator, the gas passage is formed inside the heat exchange pipe group through reasonable pipe distribution of the heat exchange pipe group, and is used for draining a gaseous refrigerant working medium by the gas passage, so that the gaseous refrigerant escapes out of the heat exchange pipe group at a reasonable speed throughout, the interference of the gaseous refrigerant working medium on the film-shaped flowing liquid refrigerant working medium is reduced, the heat exchange efficiency of the falling film evaporator is improved, and the falling film evaporator has the advantages of simple and compact structure, good manufacturability and low cost.
Description
Technical field
The utility model relates to a kind of cooling evaporimeter, refers to a kind of downward film evaporator with unique gas passage particularly.
Background technology
In the course of work of downward film evaporator, from becoming the mixing refrigerant medium of cryogenic liquid and cryogenic gas after condenser carries the high temperature condensed fluid come by the throttling arrangement throttling expansion, refrigerant medium enters the distributor in the downward film evaporator then, after distributor distributes current-sharing, drip and drench to heat exchanger tube, cold is passed to the user, after refrigerant medium self is evaporated, enter the air entry of compressor, enter condenser after compressing.
Evaporation and heat-exchange needs suitable liquid film to cover heat exchanger tube fully, therefore need form membranaceous flowing in the heat exchanger tube vertical direction, and heat exchanger tube can be evaporated to gaseous coolant working medium with liquid coolant working medium in the evaporation and heat-exchange process, the membranaceous refrigerant liquid that gaseous coolant working medium can be exchanged on the heat pipe in flow process produces interference, that is: a large amount of gases enter the heat exchange nest of tubes, because gas flow is big, cause the gas flow rate height, gaseous coolant working medium is with the high speed impact liquid film, influence the membranaceous flow regime on the heat exchanger tube, and then carry drop outflow evaporimeter and do not participate in heat exchange, cause the heat exchange property of evaporimeter to reduce.
Summary of the invention
The purpose of this utility model is to provide a kind of downward film evaporator with unique gas passage at the problems referred to above, this downward film evaporator makes the unique gas passage of the inner formation of heat exchange nest of tubes by the reasonable Arrangement heat exchanger tube, gaseous coolant working medium is carried out drainage, thereby avoid gaseous coolant working medium high speed impact liquid film and influence the heat exchange efficiency of evaporimeter.
For achieving the above object, the technical solution adopted in the utility model is: a kind of downward film evaporator with unique gas passage, it comprises housing, described housing internal upper part is provided with coolant distributor, the below of described coolant distributor is provided with horizontally disposed heat exchange nest of tubes, described heat exchange nest of tubes comprises bottom first pass heat exchange nest of tubes and heat exchange of top part nest of tubes, leave first gas passage between described first pass heat exchange nest of tubes and heat exchange of top part nest of tubes, the distance between the top layer heat exchanger tube of described first pass heat exchange nest of tubes and the bottom heat exchanger tube of described heat exchange of top part nest of tubes is 75%～100% of heat exchanger tube external diameter.
When refrigerant medium liquid flow out to drip drenches heat exchange of top part nest of tubes to the top from coolant distributor, the heat of the refrigerating medium in the heat exchanger tube is absorbed by the refrigerant medium on the heat exchanger tube, refrigerating medium is taken away cold, and a part of refrigerant evaporation on the heat exchanger tube is gaseous state, when liquid coolant working medium vertically down from the heat exchange of top part nest of tubes to bottom first pass heat exchange nest of tubes with membranaceous process of flowing, the gas coolant impact flow that liquid coolant working medium runs into is increasing, the interference that membranaceous flowing liquid refrigerant medium is subjected to is more and more stronger, and the utility model is by the reasonable stringing of heat exchange nest of tubes, make the inner gas passage that forms of heat exchange nest of tubes, utilize gas passage that gaseous coolant working medium is carried out drainage, thereby make gaseous coolant escape out the heat exchange nest of tubes and enter compressor with rational speed all the time, reduced the interference of gaseous coolant working medium to membranaceous flowing liquid refrigerant medium, make heat transfer process to carry out fully smoothly, reached the purpose that improves the downward film evaporator heat exchange efficiency; Simple and compact for structure, the good manufacturability of the utility model, cost is low.
Further, the horizontal center distance of heat exchanger tube of described first pass heat exchange nest of tubes and the horizontal center distance of heat exchanger tube of described heat exchange of top part nest of tubes are unequal, and the heat exchanger tube vertical centre spacing of the heat exchanger tube vertical centre spacing of described first pass heat exchange nest of tubes and described heat exchange of top part nest of tubes is unequal.
Further, the horizontal center distance of the heat exchanger tube of described heat exchange of top part nest of tubes is 100%～125% of heat exchanger tube external diameter, and the heat exchanger tube vertical centre spacing of described heat exchange of top part nest of tubes is 100%～125% of heat exchanger tube external diameter.
Further, described heat exchange of top part nest of tubes comprises the 3rd flow process heat exchange nest of tubes at the second flow process heat exchange nest of tubes and its top, leave second gas passage between the described second flow process heat exchange nest of tubes and the 3rd flow process heat exchange nest of tubes, the distance between the bottom heat exchanger tube of the top layer heat exchanger tube of the described second flow process heat exchange nest of tubes and described the 3rd flow process heat exchange nest of tubes is less than the distance between the bottom heat exchanger tube of the top layer heat exchanger tube of described bottom first pass heat exchange nest of tubes and the described second flow process heat exchange nest of tubes.Increasing because of the gas coolant impact flow that liquid coolant working medium vertically down runs into, therefore, from top to bottom, the size of gas passage also needs increasing, in order to make gaseous coolant all the time with the rational speed heat exchange nest of tubes of escaping out.
Description of drawings
Fig. 1 is heat exchange nest of tubes sectional structure schematic diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to more clearly understand the utility model, but they do not constitute restriction to the utility model.
A kind of downward film evaporator with unique gas passage, it comprises housing 1, described housing 1 internal upper part is provided with coolant distributor, the below of described coolant distributor is provided with horizontally disposed heat exchange nest of tubes (as shown in Figure 1), described heat exchange nest of tubes comprises the first pass heat exchange nest of tubes 2 and heat exchange of top part nest of tubes 3 of bottom, described heat exchange of top part nest of tubes 3 comprises the 3rd flow process heat exchange nest of tubes 302 at the second flow process heat exchange nest of tubes 301 and the second flow process heat exchange nest of tubes, 301 tops, described first pass heat exchange nest of tubes 2 and second 301 of the flow process heat exchange nest of tubes leave first gas passage 4, the described second flow process heat exchange nest of tubes 301 and the 3rd 302 of flow process heat exchange nest of tubes leave second gas passage 5, distance A 1 between the bottom heat exchanger tube of the top layer heat exchanger tube of described first pass heat exchange nest of tubes 2 and the described second flow process heat exchange nest of tubes 301 is 75%～100% of heat exchanger tube external diameter, distance A 2 between the bottom heat exchanger tube of the top layer heat exchanger tube of the described second flow process heat exchange nest of tubes 301 and described the 3rd flow process heat exchange nest of tubes 302 is similarly 75%～100% of heat exchanger tube external diameter, but the distance A 2 between the bottom heat exchanger tube of the top layer heat exchanger tube of the described second flow process heat exchange nest of tubes 301 and described the 3rd flow process heat exchange nest of tubes 302 is less than the distance A 1 between the bottom heat exchanger tube of the top layer heat exchanger tube of described first pass heat exchange nest of tubes 2 and the described second flow process heat exchange nest of tubes 301.The horizontal center distance B of heat exchanger tube of the described second flow process heat exchange nest of tubes 301 and the 3rd flow process heat exchange nest of tubes 302 is 100%～125% of heat exchanger tube external diameter, the heat exchanger tube vertical centre spacing C of the described second flow process heat exchange nest of tubes 301 and the 3rd flow process heat exchange nest of tubes 302 is 100%～125% of heat exchanger tube external diameter, the horizontal center distance B of heat exchanger tube of two heat exchange nest of tubes of the horizontal center distance of heat exchanger tube and its top of described first pass heat exchange nest of tubes 2 is unequal, and the heat exchanger tube vertical centre spacing C of two heat exchange nest of tubes of the heat exchanger tube vertical centre spacing of described first pass heat exchange nest of tubes 2 and its top is unequal.
The course of work of the present utility model is: liquid coolant working medium is evenly dripped pouring to the heat exchanger tube of the 3rd flow process heat exchange nest of tubes 302 of the top the time from the coolant distributor of downward film evaporator, refrigerating medium in the heat exchanger tube is absorbed heat, thereby take away cold, and the partially liq refrigerant medium on the heat exchanger tube is evaporated to gaseous state, gaseous coolant working medium enters compressor along second gas passage, 5 stable effusions, when the vertical down first pass heat exchange nest of tubes from the 3rd flow process heat exchange nest of tubes 302 to the bottom of liquid coolant working medium 2 with membranaceous process of flowing, the gas coolant impact flow that runs into is increasing, be that the interference that is subjected to of liquid film is more and more stronger, and the gas passage in the utility model is more down more big, make gaseous coolant escape out nest of tubes and stable enter compressor with rational speed all the time, avoided gaseous coolant to cause reducing the heat exchange efficiency of downward film evaporator with the high speed impact liquid film.
Claims (4)
1. downward film evaporator with unique gas passage, it comprises housing (1), described housing (1) internal upper part is provided with coolant distributor, the below of described coolant distributor is provided with horizontally disposed heat exchange nest of tubes, it is characterized in that: described heat exchange nest of tubes comprises bottom first pass heat exchange nest of tubes (2) and heat exchange of top part nest of tubes (3), leave first gas passage (4) between described first pass heat exchange nest of tubes (2) and heat exchange of top part nest of tubes (3), the distance between the bottom heat exchanger tube of the top layer heat exchanger tube of described first pass heat exchange nest of tubes (2) and described heat exchange of top part nest of tubes (3) is 75% ~ 100% of heat exchanger tube external diameter.
2. a kind of downward film evaporator with unique gas passage according to claim 1, it is characterized in that: the horizontal center distance of heat exchanger tube of described first pass heat exchange nest of tubes (2) and the horizontal center distance of heat exchanger tube of described heat exchange of top part nest of tubes (3) are unequal, and the heat exchanger tube vertical centre spacing of the heat exchanger tube vertical centre spacing of described first pass heat exchange nest of tubes (2) and described heat exchange of top part nest of tubes (3) is unequal.
3. a kind of downward film evaporator with unique gas passage according to claim 1 and 2, it is characterized in that: the horizontal center distance of heat exchanger tube of described heat exchange of top part nest of tubes (3) is 100% ~ 125% of heat exchanger tube external diameter, and the heat exchanger tube vertical centre spacing of described heat exchange of top part nest of tubes (3) is 100% ~ 125% of heat exchanger tube external diameter.
4. a kind of downward film evaporator with unique gas passage according to claim 1 and 2, it is characterized in that: described heat exchange of top part nest of tubes (3) comprises the 3rd flow process heat exchange nest of tubes (302) at the second flow process heat exchange nest of tubes (301) and its top, leave second gas passage (5) between the described second flow process heat exchange nest of tubes (301) and the 3rd flow process heat exchange nest of tubes (302), the distance between the bottom heat exchanger tube of the top layer heat exchanger tube of the described second flow process heat exchange nest of tubes (301) and described the 3rd flow process heat exchange nest of tubes (302) is less than the distance between the bottom heat exchanger tube of the top layer heat exchanger tube of described bottom first pass heat exchange nest of tubes (2) and the described second flow process heat exchange nest of tubes (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220731058 CN203163349U (en) | 2012-12-27 | 2012-12-27 | Falling film evaporator provided with unique gas passages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220731058 CN203163349U (en) | 2012-12-27 | 2012-12-27 | Falling film evaporator provided with unique gas passages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163349U true CN203163349U (en) | 2013-08-28 |
Family
ID=49024528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220731058 Expired - Lifetime CN203163349U (en) | 2012-12-27 | 2012-12-27 | Falling film evaporator provided with unique gas passages |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322848A (en) * | 2015-06-30 | 2017-01-11 | 青岛海尔空调电子有限公司 | Flooded evaporator |
| CN108827027A (en) * | 2018-06-27 | 2018-11-16 | 珠海格力电器股份有限公司 | Tubular heat exchanger and falling film evaporator |
-
2012
- 2012-12-27 CN CN 201220731058 patent/CN203163349U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322848A (en) * | 2015-06-30 | 2017-01-11 | 青岛海尔空调电子有限公司 | Flooded evaporator |
| CN106322848B (en) * | 2015-06-30 | 2019-02-15 | 合肥海尔空调电子有限公司 | Flooded evaporator |
| CN108827027A (en) * | 2018-06-27 | 2018-11-16 | 珠海格力电器股份有限公司 | Tubular heat exchanger and falling film evaporator |
| CN108827027B (en) * | 2018-06-27 | 2019-06-25 | 珠海格力电器股份有限公司 | Tubular heat exchanger and falling film evaporator |
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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: 20130828 |