CN203940671U - Super times feed flow falling film evaporation refrigeration system - Google Patents
Super times feed flow falling film evaporation refrigeration system Download PDFInfo
- Publication number
- CN203940671U CN203940671U CN201420265998.3U CN201420265998U CN203940671U CN 203940671 U CN203940671 U CN 203940671U CN 201420265998 U CN201420265998 U CN 201420265998U CN 203940671 U CN203940671 U CN 203940671U
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- Prior art keywords
- falling film
- film evaporator
- liquid
- gas
- liquid separator
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Abstract
The utility model discloses a kind of super times feed flow falling film evaporation refrigeration system, provide a kind of liquid level to be easy to control, the refrigeration system of super times feed flow low in energy consumption.The outlet of compressor is connected with throttling arrangement successively with condenser, the outlet of throttling arrangement is connected with the first entrance of gas-liquid separator, the gaseous phase outlet of gas-liquid separator is connected with the import of compressor, the liquid-phase outlet of gas-liquid separator is connected with the liquid phase import of falling film evaporator by flow regulator, the gaseous phase outlet of falling film evaporator is connected with the import of Venturi tube, the fluid intake of Venturi tube is connected with the liquid-phase outlet of falling film evaporator, and the outlet of Venturi tube is connected with the second entrance of gas-liquid separator; Gas-liquid separator installation site, higher than described falling film evaporator, owing to Venturi tube being installed in the return line of falling film evaporator, utilizes being used in conjunction with of throttling arrangement and flow regulator simultaneously, liquid level is easy to control, and, do not use canned motor pump, system heat exchange efficiency is high, low in energy consumption.
Description
Technical field
The utility model relates to a kind of refrigeration system, in particular, relates to a kind of horizontal falling film evaporation refrigeration system of utilizing Venturi effect to realize super times feed flow.
Background technology
Falling film evaporation is widely used in refrigeration system with the high advantage of its heat exchange efficiency, has in the prior art the parallel use of two kinds of horizontal falling film evaporation refrigeration systems.A kind of is with canned motor pump, to realize the refrigeration system of super times feed flow; Another kind is directly to spray the refrigeration system of non-super times feed flow in horizontal evaporating tube.The former utilizes the start-stop of canned motor pump to realize the control of refrigeration system cold water leaving water temperature, and system heat exchange efficiency is high, can produce the cold water that approaches freezing point, but the use of canned motor pump has increased power consumption; The latter utilizes the liquid supply rate of choke valve to realize the control of leaving water temperature, is difficult to produce low-temperature cold water.
In order to reduce power consumption, the patent No. is 200610118931.7, utility model name is called and in the patent of < < jet flow circulated sprinkling falling-film evaporator > >, discloses the falling film evaporator that a kind of jet current principle that utilizes jet pump is realized super times feed flow, has removed canned motor pump of the prior art.The jet pump high-pressure refrigerant entrance of jet flow circulated sprinkling falling-film evaporator communicates with condenser, utilizes the injection of condensed high pressure refrigerant liquid to take back the refrigerant liquid not evaporating in evaporimeter, realizes super times feed flow.This device is being realized super times feed flow that jet brings simultaneously, and still to feed flow in evaporimeter, and amount of jet is greater than soakage, and evaporimeter liquid level is difficult to control.For being connected to actual should bear of jet pump after condenser, spray and two functions of throttling just can complete kind of refrigeration cycle, in actual cycle, be difficult to accomplish.
Utility model content
The utility model is in order to overcome defect of the prior art, provides a kind of liquid level to be easy to control, the horizontal falling film evaporation refrigeration system of super times feed flow low in energy consumption.
The utility model is achieved through the following technical solutions:
A super times feed flow falling film evaporation refrigeration system, comprises compressor, condenser, throttling arrangement, gas-liquid separator, flow regulator, falling film evaporator, Venturi tube and refrigeration controler, the gaseous phase outlet of described falling film evaporator is positioned at the top of described falling film evaporator, liquid distributor and water lines are installed downwards successively from top in described falling film evaporator, described falling film evaporator bottommost is provided with liquid-phase outlet, and the liquid phase import of described falling film evaporator is positioned at liquid distributor top, the outlet of described compressor is connected with throttling arrangement successively with described condenser, the outlet of described throttling arrangement is connected with the first entrance of described gas-liquid separator, the gaseous phase outlet of described gas-liquid separator is connected with the import of described compressor, the liquid-phase outlet of described gas-liquid separator is connected with the liquid phase import of described falling film evaporator by described flow regulator, the gaseous phase outlet of described falling film evaporator is connected with the import of described Venturi tube, the fluid intake of described Venturi tube is connected with the liquid-phase outlet of described falling film evaporator, the outlet of described Venturi tube is connected with the second entrance of described gas-liquid separator, described gas-liquid separator installation site is higher than described falling film evaporator, in described gas-liquid separator and described falling film evaporator, be respectively arranged with liquid level sensor, the water lines exit of described falling film evaporator is provided with temperature sensor, described temperature sensor is connected with liquid level signal input with the temperature signal input of described refrigeration controler respectively with liquid level sensor described in each, the gas-liquid separator level control signal output part of described refrigeration controler is connected with the control end of described throttling arrangement, by controlling the open degree of described throttling arrangement, control described gas-liquid separator liquid level, the falling film evaporator level control signal output part of described refrigeration controler is connected with the control end of described flow regulator, described refrigeration controler is controlled the liquid level of described falling film evaporator by controlling the open degree of described flow regulator, the compressor control signal output of described refrigeration controler is connected with the control end of described compressor, by controlling start-stop or the rotating speed of described compressor, control described falling film evaporator water lines outlet temperature.
The utlity model has following technique effect:
1, refrigeration system of the present utility model, in the return line of falling film evaporator, Venturi tube is installed, utilize being used in conjunction with of throttling arrangement and flow regulator simultaneously, can simply to the cold-producing medium liquid level in gas-liquid separator and in falling film evaporator, control.When gas-liquid separator cold-producing medium liquid level is high, the refrigerant flow that can pass through throttling arrangement by minimizing is controlled; When falling film evaporator cold-producing medium liquid level is high, the refrigerant flow that can pass through flow regulator by minimizing is controlled, and liquid level is easy to control.
2. refrigeration system of the present utility model is not used canned motor pump, and system heat exchange efficiency is high, low in energy consumption.
Accompanying drawing explanation
Fig. 1 is the super times feed flow falling film evaporation refrigeration system schematic diagram of the utility model.
In figure: 1-compressor, 2-condenser, 3-throttling arrangement, 4-gas-liquid separator, 5-flow regulator, 6-falling film evaporator, 7-Venturi tube.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The schematic diagram of the super times feed flow falling film evaporation refrigeration system of the utility model as shown in Figure 1, comprises compressor 1, condenser 2, throttling arrangement 3, gas-liquid separator 4, flow regulator 5, falling film evaporator 6, Venturi tube 7 and refrigeration controler.Flow regulator 5 in the present embodiment adopts flow control valve.The gaseous phase outlet of described falling film evaporator 6 is positioned at the top of described falling film evaporator 6, in described falling film evaporator 6, liquid distributor and water lines are installed successively from top downwards, described falling film evaporator 6 bottommosts are provided with liquid-phase outlet, and the liquid phase import of described falling film evaporator 6 is positioned at liquid distributor top, the outlet of described compressor 1 is connected with throttling arrangement 3 successively with described condenser 2, the outlet of described throttling arrangement 3 is connected with the first entrance of described gas-liquid separator 4, the gaseous phase outlet of described gas-liquid separator 4 is connected with the import of described compressor 1, the liquid-phase outlet of described gas-liquid separator 4 is connected with the liquid phase import of described falling film evaporator 6 by described flow regulator 5, the gaseous phase outlet of described falling film evaporator 6 is connected with the import of described Venturi tube 7, the fluid intake of described Venturi tube 7 is connected with the liquid-phase outlet of described falling film evaporator 6, the outlet of described Venturi tube 7 is connected with the second entrance of described gas-liquid separator 4, described gas-liquid separator 4 installation sites are higher than described falling film evaporator 6, in described gas-liquid separator 4 and described falling film evaporator 6, be respectively arranged with liquid level sensor, the water lines exit of described falling film evaporator 6 is provided with temperature sensor, described temperature sensor is connected with liquid level signal input with the temperature signal input of described refrigeration controler respectively with liquid level sensor described in each, the gas-liquid separator level control signal output part of described refrigeration controler is connected with the control end of described throttling arrangement 3, by controlling the open degree of described throttling arrangement 3, control described gas-liquid separator 4 liquid levels, the falling film evaporator level control signal output part of described refrigeration controler is connected with the control end of described flow regulator 5, described refrigeration controler is controlled the liquid level of described falling film evaporator 6 by controlling the open degree of described flow regulator 5, the compressor control signal output of described refrigeration controler is connected with the control end of described compressor, by controlling start-stop or the rotating speed of described compressor 1, control described falling film evaporator 6 water lines outlet temperatures.
High-pressure refrigerant vapor after compressor 1 compression is condensed into high pressure refrigerant liquid through condenser 2, after throttling arrangement 3 step-downs, enter in gas-liquid separator 4, wherein the gas of shwoot is got back to compressor 1 from gas-liquid separator 4 gaseous phase outlets, liquid is stayed gas-liquid separator 4 bottoms, when gas-liquid separator 4 liquid levels reach requirement, liquid level sensor wherein passes to refrigeration controler by signal, and throttling arrangement 3 reduces the liquid supply rate of gas-liquid separator 4.When falling film evaporator 6 water lines outlet temperatures are when higher, temperature sensor wherein passes to refrigeration controler by signal, compressor 1 is started working, flow regulator 5 is opened, beginning is to falling film evaporator 6 feed flows, Venturi tube 7 produces Venturi effect simultaneously, attracts the low pressure refrigerant liquid not falling from falling film evaporator 6 bottom evaporations from the outlet of Venturi tube 7, to flow back to gas-liquid separator 4 together; When the liquid levels do not fallen when falling film evaporator 6 evaporation is higher, liquid level sensor wherein passes to refrigeration controler by signal, and flow regulator 5 reduces the liquid supply rate of falling film evaporators 6, and the liquid that Venturi tube 7 sucks back is got back in gas-liquid separator 4; When falling film evaporator 6 water lines outlet temperatures reach requirement, compressor 1 quits work.
In the utility model, compressor 1, also can change refrigerant flow by modes such as frequency conversions and realize except adopting start-stop realizes for the adjusting of falling film evaporator 6 water lines outlet temperatures.When falling film evaporator 6 water lines outlet temperatures are during higher than design temperature, improve compressor 1 running speed.
Claims (1)
1. a super times feed flow falling film evaporation refrigeration system, is characterized in that, comprises compressor, condenser, throttling arrangement, gas-liquid separator, flow regulator, falling film evaporator, Venturi tube and refrigeration controler, the gaseous phase outlet of described falling film evaporator is positioned at the top of described falling film evaporator, liquid distributor and water lines are installed downwards successively from top in described falling film evaporator, described falling film evaporator bottommost is provided with liquid-phase outlet, and the liquid phase import of described falling film evaporator is positioned at liquid distributor top, the outlet of described compressor is connected with throttling arrangement successively with described condenser, the outlet of described throttling arrangement is connected with the first entrance of described gas-liquid separator, the gaseous phase outlet of described gas-liquid separator is connected with the import of described compressor, the liquid-phase outlet of described gas-liquid separator is connected with the liquid phase import of described falling film evaporator by described flow regulator, the gaseous phase outlet of described falling film evaporator is connected with the import of described Venturi tube, the fluid intake of described Venturi tube is connected with the liquid-phase outlet of described falling film evaporator, the outlet of described Venturi tube is connected with the second entrance of described gas-liquid separator, described gas-liquid separator installation site is higher than described falling film evaporator, in described gas-liquid separator and described falling film evaporator, be respectively arranged with liquid level sensor, the water lines exit of described falling film evaporator is provided with temperature sensor, described temperature sensor is connected with liquid level signal input with the temperature signal input of described refrigeration controler respectively with liquid level sensor described in each, the gas-liquid separator level control signal output part of described refrigeration controler is connected with the control end of described throttling arrangement, by controlling the open degree of described throttling arrangement, control described gas-liquid separator liquid level, the falling film evaporator level control signal output part of described refrigeration controler is connected with the control end of described flow regulator, described refrigeration controler is controlled the liquid level of described falling film evaporator by controlling the open degree of described flow regulator, the compressor control signal output of described refrigeration controler is connected with the control end of described compressor, by controlling start-stop or the rotating speed of described compressor, control described falling film evaporator water lines outlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265998.3U CN203940671U (en) | 2014-05-22 | 2014-05-22 | Super times feed flow falling film evaporation refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265998.3U CN203940671U (en) | 2014-05-22 | 2014-05-22 | Super times feed flow falling film evaporation refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203940671U true CN203940671U (en) | 2014-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420265998.3U Withdrawn - After Issue CN203940671U (en) | 2014-05-22 | 2014-05-22 | Super times feed flow falling film evaporation refrigeration system |
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| CN (1) | CN203940671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968622A (en) * | 2014-05-22 | 2014-08-06 | 天津商业大学 | High-concentrated feed liquid falling film evaporation refrigeration system |
| CN114279102A (en) * | 2021-12-14 | 2022-04-05 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation refrigeration system and working method |
-
2014
- 2014-05-22 CN CN201420265998.3U patent/CN203940671U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968622A (en) * | 2014-05-22 | 2014-08-06 | 天津商业大学 | High-concentrated feed liquid falling film evaporation refrigeration system |
| CN114279102A (en) * | 2021-12-14 | 2022-04-05 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation refrigeration system and working method |
| CN114279102B (en) * | 2021-12-14 | 2023-12-29 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation cold refrigerating system and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141112 Effective date of abandoning: 20151118 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141112 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |