CN208382608U - Falling film type screw rod cold water heat pump unit - Google Patents
Falling film type screw rod cold water heat pump unit Download PDFInfo
- Publication number
- CN208382608U CN208382608U CN201820945719.6U CN201820945719U CN208382608U CN 208382608 U CN208382608 U CN 208382608U CN 201820945719 U CN201820945719 U CN 201820945719U CN 208382608 U CN208382608 U CN 208382608U
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- CN
- China
- Prior art keywords
- film evaporator
- compressor
- refrigerant
- liquid refrigerant
- downward film
- 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 - Fee Related
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Abstract
The utility model discloses a kind of falling film type screw rod cold water heat pump units, including compressor, the compressor is connected with oil eliminator, the oil eliminator is connected with condenser, the condenser is connected with downward film evaporator, the downward film evaporator is also connect with the compressor, the lower part of the downward film evaporator is equipped with refrigerant supercooling tube, the both ends of the refrigerant supercooling tube are connected separately with liquid refrigerant import and liquid refrigerant outlet positioned at the downward film evaporator bottom, the liquid refrigerant import is connect with the condenser, the liquid refrigerant outlet is connected with electric expansion valve, the electric expansion valve is connect with the downward film evaporator.The utility model substitutes traditional freezing waterway tube by using refrigerant supercooling tube, reduces the liquid refrigerant in oil return, protects compressor, while improving the degree of supercooling of condensed liquid refrigerant, improves the refrigerating capacity of entire unit, and then improve unit efficiency.
Description
Technical field
The utility model relates to one kind in technical field of air conditioner refrigeration more particularly to a kind of falling film type screw rod cold water heat pump machine
Group.
Background technique
For using the Screw chiller of downward film evaporator, when chilled water temperature fluctuation is larger, downward film evaporator pair
Not exclusively in refrigerant evaporation, it a large amount of refrigerant liquids is just had is mixed with lubricating oil and retain in base of evaporator, partially liq
Compressor is directly entered by air-breathing, the way solved the problems, such as now are as follows: some freezing waterway tubes are set in base of evaporator, are used
The liquid refrigerant heating evaporation that chilled water will have.Its shortcoming is that both having wasted the chilled water for directly evaporating, and work as
When water temperature is lower, liquid refrigerant still can not evaporating completely, cause still to have a large amount of refrigerant liquids when air-breathing and oil return, to spiral shell
Bar compressor damages；In addition, causing the refrigerating capacity and efficiency of unit because the degree of supercooling of condensed liquid refrigerant is lower
It is not high.
Utility model content
The utility model provides a kind of a large amount of liquid for being able to solve and having in the oil return as caused by chilled water temperature fluctuation
Cryogen problem guarantees that helical-lobe compressor can operate normally, while can greatly improve the degree of supercooling of liquid refrigerant, mentions
The falling film type screw rod cold water heat pump unit of high unit refrigerating capacity and efficiency.
In order to solve the above technical problems, the technical solution of the utility model is: a kind of falling film type screw rod cold water heat pump unit,
Including compressor, the compressor is connected with oil eliminator, and the oil eliminator is connected with condenser, and the condenser is connected with
Downward film evaporator, the downward film evaporator are also connect with the compressor, and the lower part of the downward film evaporator is equipped with system
Cryogen supercooling tube, the both ends of the refrigerant supercooling tube are connected separately with the liquid refrigerating positioned at the downward film evaporator bottom
Agent import and liquid refrigerant outlet, the liquid refrigerant import are connect with the condenser, the liquid refrigerant outlet
It is connected with electric expansion valve, the electric expansion valve is connect with the downward film evaporator.
The compressor is helical-lobe compressor as a preferred technical solution,.
It is connected between the liquid refrigerant outlet and the electric expansion valve as a preferred technical solution, dried
Filter cylinder.
The top of the downward film evaporator is equipped with refrigerant gas outlet, the refrigerant as a preferred technical solution,
Gas outlet is connect with the compressor.
As a preferred technical solution, the bottom of the downward film evaporator be equipped with oil return opening, the oil return opening with it is described
Oil eliminator connection.
By adopting the above-described technical solution, the workflow of the utility model are as follows: refrigerant enters from compressor outlet
Oil eliminator separates most of lubricating oil, enters condenser later and condenses, the liquid refrigerant condensed enters falling liquid film
The refrigerant supercooling tube that lower part is arranged in formula evaporator, will be mixed with the refrigerant liquid of non-evaporating completely in evaporator lubricating oil
Body carries out heating evaporation, subsequently into electric expansion valve, enters in downward film evaporator be evaporated as superheat refrigeration later
It is returned to after agent gas and completes entire cooling flow in compressor.Downward film evaporator lower part is substituted using refrigerant super-cooling pipeline
Waterway tube is freezed, so that the liquid refrigerant condensed is entered base of evaporator and carries out the non-evaporating completely that is mixed with of heating lubricating oil
Liquid refrigerant, while improving the degree of supercooling of condensed liquid refrigerant.The utility model is replaced by using refrigerant supercooling tube
For traditional freezing waterway tube, unevaporated refrigerant liquid is mixed with to downward film evaporator bottom with condensed refrigerant liquid
Body carries out heating evaporation, and the main liquid refrigerant reduced in oil return protects compressor, while improving condensed liquid refrigeration
The degree of supercooling of agent improves the refrigerating capacity of entire unit, and then improves unit efficiency.
Detailed description of the invention
Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model
It encloses.Wherein:
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the downward film evaporator of the utility model embodiment.
In figure: 1- compressor；2- oil eliminator；3- condenser；4- downward film evaporator；5- refrigerant supercooling tube；6- liquid
Cryogen import；The outlet of 7- liquid refrigerant；8- electric expansion valve；9- dry cartridge filter refrigerating；10- refrigerant gas outlet；11- is returned
Hydraulic fluid port.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further described.In the following detailed description, only pass through
Bright mode describes certain exemplary embodiments of the utility model.Undoubtedly, those skilled in the art can be with
It recognizes, it, can be with a variety of different modes to described without departing from the spirit and scope of the utility model
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other
Not constituting conflict can be combined with each other.
As depicted in figs. 1 and 2, a kind of falling film type screw rod cold water heat pump unit, including compressor 1, compressor 1 are connected with oil
Separator 2, oil eliminator 2 are connected with condenser 3, and condenser 3 is connected with downward film evaporator 4, downward film evaporator 4 also with pressure
Contracting machine 1 connects, and the lower part of downward film evaporator 4 is equipped with refrigerant supercooling tube 5, and the both ends of refrigerant supercooling tube 5 are connected separately with
Liquid refrigerant import 6 and liquid refrigerant outlet 7, liquid refrigerant import 6 and condensation positioned at 4 bottom of downward film evaporator
Device 3 connects, and liquid refrigerant outlet 7 is connected with electric expansion valve 8, and electric expansion valve 8 is connect with downward film evaporator 4.
Compressor 1 is helical-lobe compressor；The top of downward film evaporator 4 is equipped with refrigerant gas outlet 10, refrigerant outlet
Mouth 10 is connect with compressor 1；The bottom of downward film evaporator 4 is equipped with oil return opening 11, and oil return opening 11 is connect with oil eliminator 2.
It is connected with dry cartridge filter refrigerating 9 between liquid refrigerant outlet 7 and electric expansion valve 8, above structure is conducive to improve
Aridity.
The workflow of the present embodiment are as follows: refrigerant from compressor 1 outlet enter oil eliminator 2 by most of lubricating oil into
Row separation enters condenser 3 later and condenses, and the liquid refrigerant condensed enters what lower part in downward film evaporator 4 was arranged
Refrigerant supercooling tube 5, will be mixed in evaporator lubricating oil non-evaporating completely refrigerant liquid carry out heating evaporation, then into
Enter electric expansion valve 8, enters in downward film evaporator 4 be evaporated as returning to compressor 1 after superheated refrigerant gas later
It is interior to complete entire cooling flow.By 4 lower part of downward film evaporator using 5 tunnel of refrigerant supercooling tube substitution freezing waterway tube, make cold
The liquid refrigerant coagulated enters the liquid refrigerant that base of evaporator carries out the non-evaporating completely that heating lubricating oil is mixed with, simultaneously
Improve the degree of supercooling of condensed liquid refrigerant.
The present embodiment substitutes traditional freezing waterway tube by using refrigerant supercooling tube 5, with condensed refrigerant liquid
Body is mixed with unevaporated refrigerant liquid to 4 bottom of downward film evaporator and carries out heating evaporation, the main liquid reduced in oil return
Refrigerant protects compressor 1, while improving the degree of supercooling of condensed liquid refrigerant, improves the refrigerating capacity of entire unit,
And then improve unit efficiency.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of falling film type screw rod cold water heat pump unit, including compressor, the compressor is connected with oil eliminator, the oil
Be connected with condenser from device, the condenser is connected with downward film evaporator, the downward film evaporator also with the compressor
Connection, it is characterised in that: the lower part of the downward film evaporator is equipped with refrigerant supercooling tube, the both ends of the refrigerant supercooling tube
It is connected separately with the liquid refrigerant import and liquid refrigerant outlet positioned at the downward film evaporator bottom, the liquid system
Cryogen import is connect with the condenser, and liquid refrigerant outlet is connected with electric expansion valve, the electric expansion valve with
The downward film evaporator connection.
2. falling film type screw rod cold water heat pump unit as described in claim 1, it is characterised in that: the compressor is screw compression
Machine.
3. falling film type screw rod cold water heat pump unit as described in claim 1, it is characterised in that: liquid refrigerant outlet with
Dry cartridge filter refrigerating is connected between the electric expansion valve.
4. falling film type screw rod cold water heat pump unit as described in claim 1, it is characterised in that: the top of the downward film evaporator
Portion is equipped with refrigerant gas outlet, and the refrigerant gas outlet is connect with the compressor.
5. such as the described in any item falling film type screw rod cold water heat pump units of Claims 1-4, it is characterised in that: the falling film type
The bottom of evaporator is equipped with oil return opening, and the oil return opening is connect with the oil eliminator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820945719.6U CN208382608U (en) | 2018-06-20 | 2018-06-20 | Falling film type screw rod cold water heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820945719.6U CN208382608U (en) | 2018-06-20 | 2018-06-20 | Falling film type screw rod cold water heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208382608U true CN208382608U (en) | 2019-01-15 |
Family
ID=64967442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820945719.6U Expired - Fee Related CN208382608U (en) | 2018-06-20 | 2018-06-20 | Falling film type screw rod cold water heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208382608U (en) |
-
2018
- 2018-06-20 CN CN201820945719.6U patent/CN208382608U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190115 Termination date: 20190620 |