CN206469537U - A kind of single machine two-stage refrigeration unit - Google Patents
A kind of single machine two-stage refrigeration unit Download PDFInfo
- Publication number
- CN206469537U CN206469537U CN201621363495.5U CN201621363495U CN206469537U CN 206469537 U CN206469537 U CN 206469537U CN 201621363495 U CN201621363495 U CN 201621363495U CN 206469537 U CN206469537 U CN 206469537U
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- China
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- oil
- compressor
- outlet
- evaporator
- economizer
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Abstract
The utility model discloses a kind of single machine two-stage refrigeration unit, including frame, the frame is provided with single machine two-stage screw bolt compressor, dial plate, wiring duct, control system, evaporator, oil eliminator, oil cooler, oil strainer, economizer, reservoir and heat regenerator；Oil circulation is formed between the compressor, oil eliminator, oil cooler, oil strainer；Kind of refrigeration cycle is formed between the compressor, oil eliminator, heat regenerator, reservoir, oil cooler and external equipment evaporative condenser etc.；The liquid outlet of the reservoir, the inlet of oil cooler, the first entrance of economizer, the liquid spout of compressor are equipped with magnetic valve I；The compressor, dial plate, magnetic valve I are connected with control system；The heat regenerator is provided with water inlet and delivery port.The utility model heat exchange efficiency is high, has coolant injection amount few compared with traditional direct-cooling type unit, the few advantage of leak source；Unit goes out liquid temperature degree up to 50 DEG C using R404A refrigerants, and refrigeration is good.
Description
Technical field
The utility model is related to a kind of refrigeration unit, specially a kind of single machine two-stage refrigeration unit, and belonging to refrigeration plant should
Use technical field.
Background technology
In recent years due to the demand high speed development of freezer, numerous enterprises invest to build freezer one after another, from addressing to design, from
Examination is built, trade management standards and norms are all should comply with from using to managing, the construction and use of freezer should be from safety
Angle is set out, it should use fluorine refrigeration system.
Current ammonia refrigeration system is by refrigeration unit, ammonia oil separator, high-pressure reservoir, condenser, low pressure recycle liquid storage
Bucket, oil catcher, ammonia pump and air-cooler etc. are constituted, and refrigeration unit typically uses direct-cooling type unit, the coolant injection of direct-cooling type unit
Amount is more, and leak source is more, and security performance is low, and existing a small amount of single machine two-stage refrigeration unit expends resource in addition, without good
Heat exchange module, refrigerating efficiency is low.Therefore, a kind of single machine two-stage refrigeration unit is proposed regarding to the issue above.
The content of the invention
The purpose of this utility model is that provides a kind of single machine two-stage refrigeration unit to solve the above problems, and uses
Technical scheme is as follows：
A kind of single machine two-stage refrigeration unit, including frame, the frame provided with single machine two-stage screw bolt compressor, dial plate,
Wiring duct, control system, evaporator, oil eliminator, oil cooler, oil strainer, economizer, reservoir and heat regenerator；Institute
State the entrance of oil eliminator with the gas vent of compressor to be connected, the freezing oil export and oil cooler of the oil eliminator
Oil inlet is connected, and the entrance of the oil strainer is connected with the oil-out of oil cooler, the outlet of the oil strainer with
The oil circuit of compressor is connected；The steam (vapor) outlet of the oil eliminator is connected with the entrance of heat regenerator, the heat regenerator
Outlet be connected with external evaporative condenser entrance, evaporative condenser outlet is connected with the entrance of reservoir, institute
State the outlet of the inlet of oil cooler, the first entrance of economizer and second entrance, the liquid spout of compressor with reservoir
It is connected, the outlet of the oil cooler, the first outlet of economizer are connected with the middle pressure mouthful of compressor, the evaporator
Inlet be connected with the second outlet of economizer, the outlet of the evaporator is connected with the air entry of compressor, described
The opposite side of evaporator is provided with glacial epoch refrigerant inlet and glacial epoch refrigerant exit；Inlet, the warp of the oil cooler and evaporator
The first access point of Ji device is equipped with heating power expansion valve；The liquid outlet of the reservoir, the inlet of oil cooler, economizer
First entrance, the liquid spout of compressor are equipped with magnetic valve I；The compressor, dial plate, magnetic valve I are connected with control system
Connect；The heat regenerator is provided with water inlet and delivery port.
Preferably, the oil cooler, economizer and evaporator use plate type heat exchanger.
Preferably, the steam (vapor) outlet of the oil eliminator is provided with pressure maintenance valve.
Preferably, the port of export of the reservoir is provided with dried lauter tub.
Preferably, magnetic valve II, magnetic valve II and control system are provided between the outlet of the oil strainer and compressor
It is connected.
Preferably, between the compressor and oil eliminator, evaporator, between heat regenerator and oil eliminator, evaporator
The interface of liquid in-out side is connected using flange.
The beneficial effects of the utility model are：
（1）The heat regenerator being provided with can realize heat recovery, and gained hot water is available for domestic water up to 50 DEG C.
（2）Oil cooler, economizer and evaporator are by the way of plate-type heat-exchange, and heat exchange efficiency is high.
（3）Evaporator uses plate type heat exchanger, is freezed by refrigerating medium, has compared with traditional direct-cooling type unit
Coolant injection amount is few, the few advantage of leak source；Change the freezer and quick freezing repository of fluorine available for ammonia, unit goes out reachable -50 DEG C of liquid temperature degree,
Refrigeration is good.
Brief description of the drawings
Fig. 1 is mounting structure schematic diagram of the present utility model；
Fig. 2 is Fig. 1 rearview；
Fig. 3 is system flow chart of the present utility model.
In figure：1st, compressor, 2, heat regenerator, 201, water inlet, 202, delivery port, 3, economizer, 4, reservoir, 5, steam
Send out device, 501, glacial epoch refrigerant inlet, 502, glacial epoch refrigerant exit, 6, oil eliminator, 7, dial plate, 8, heating power expansion valve, 9, frame,
10th, wiring duct, 11, control electronic box, 12, dried lauter tub, 13, pressure maintenance valve, 14, oil strainer, 15, magnetic valve II, 16,
Magnetic valve I, 17, oil cooler.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the utility model embodiment is clearly and completely described.
As Figure 1-3, a kind of single machine two-stage refrigeration unit, including frame 9, the frame 9 is provided with single machine two-stage spiral shell
Bar compressor 1, dial plate 7, wiring duct 10, control system, evaporator 5, oil eliminator 6, oil cooler 17, oil strainer 14, warp
Help device 3, reservoir 4 and heat regenerator 2；The oil eliminator 6 is connected with the gas vent of compressor 1, the oil eliminator 6
Machine oil outlet be connected with oil cooler 17, the steam (vapor) outlet of the oil eliminator 6 is connected with the entrance of heat regenerator 2,
The outlet of the heat regenerator 2 is connected with external evaporative condenser entrance, the evaporative condenser outlet and the liquid storage
The entrance of device is connected, and the entrance of the oil strainer 14 is connected with oil cooler 17, the outlet of the oil strainer 14 with
The oil circuit of compressor 1 is connected, and the steam (vapor) outlet of the oil eliminator 6 is provided with pressure maintenance valve 13；The oil cooler 17
Inlet, the first inlet of economizer 3, the second inlet of economizer 3, the liquid spout of compressor 1 are connected with reservoir
Connect, the port of export of the reservoir 4 is provided with dried lauter tub 12；The oil cooler 14, economizer 17 first outlet with
The middle pressure mouthful of compressor 1 is connected, and the inlet of the evaporator 5 is connected with the second liquid outlet of economizer 3, the evaporation
The outlet of device 5 is connected with the air entry of compressor 1, and the opposite side of the evaporator 5 is provided with glacial epoch refrigerant inlet 501 and glacial epoch
Refrigerant exit 502；The inlet of the oil cooler 14 and economizer 3 and the first inlet of evaporator 5 are equipped with heating power
Expansion valve 8；The liquid outlet of the reservoir 4, the liquid spout of the inlet of oil cooler 14 and compressor 1 and economizer 3
First inlet is equipped with magnetic valve I 16；Magnetic valve II 15 is provided between the oil strainer 14 and compressor 1；The compression
Machine 1, dial plate 7, magnetic valve I 16, magnetic valve II 15 are connected with control system；The heat regenerator 2 is provided with water inlet 201
With delivery port 202.
In the present embodiment, the oil cooler 14, economizer 3 and evaporator 5 use plate type heat exchanger.
In the present embodiment, between the compressor 1 and oil eliminator 6, evaporator 5, heat regenerator 2 and oil eliminator 6, storage
Between liquid device 4, the interface 501,502 of evaporator liquid in-out side is connected using flange.
When in use, the high temperature and high pressure gas after being compressed through compressor enter oil eliminator to the utility model, in oil separation
In device after Oil-gas Separation, the refrigeration oil isolated is cooled down through oil cooler, and the oil of compressor is entered after oil strainer filtering
Road, is circulated according to this.The gas isolated enters heat regenerator, and reservoir is entered after further being condensed through evaporative condenser.Storage
Liquid in liquid device, by oil cooler, economizer and evaporator, is eventually passed back in compressor after filtering, reducing pressure by regulating flow, according to
This circulation.
Obviously, embodiment described above is only a part of embodiment of the utility model, rather than whole embodiments.Base
Embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, belong to the scope of the utility model protection.
Claims (6)
1. a kind of single machine two-stage refrigeration unit, including frame, it is characterised in that the frame is compressed provided with single machine two-stage screw bolt
Machine, dial plate, wiring duct, control system, evaporator, oil eliminator, oil cooler, oil strainer, economizer, reservoir and heat are returned
Receive device；The entrance of the oil eliminator is connected with the gas vent of compressor, the machine oil outlet and oil cooling of the oil eliminator
But the oil inlet of device is connected, and the entrance of the oil strainer is connected with the oil-out of oil cooler, the oil strainer
Outlet is connected with the oil circuit of compressor；The steam (vapor) outlet of the oil eliminator is connected with the entrance of heat regenerator, the heat
The outlet of recover is connected with external equipment evaporative condenser entrance, external equipment evaporative condenser outlet with it is described
The entrance of reservoir is connected, the inlet of the oil cooler, the first entrance of economizer and second entrance, the liquid of compressor
Spout is connected with the outlet of reservoir, the outlet of the oil cooler, the first outlet of economizer with compressor
Pressure mouth is connected, and the inlet of the evaporator is connected with the second outlet of economizer, the liquid outlet and pressure of the evaporator
The air entry of contracting machine is connected, and the opposite side of the evaporator is provided with glacial epoch refrigerant inlet and glacial epoch refrigerant exit；The oil cooling
But the inlet of device and evaporator, the first access point of economizer are equipped with heating power expansion valve；Liquid outlet, the oil of the reservoir
The inlet of cooler, the first entrance of economizer, the liquid spout of compressor are equipped with magnetic valve I；The compressor, dial plate,
Magnetic valve I is connected with control system；The heat regenerator is provided with water inlet and delivery port.
2. a kind of single machine two-stage refrigeration unit according to claim 1, it is characterised in that the oil cooler, economizer
Plate type heat exchanger is used with evaporator.
3. a kind of single machine two-stage refrigeration unit according to claim 1, it is characterised in that the steam of the oil eliminator goes out
Mouth is provided with pressure maintenance valve, ensure that certain condensing pressure.
4. a kind of single machine two-stage refrigeration unit according to claim 1, it is characterised in that the port of export of the reservoir is set
There is dried lauter tub.
5. a kind of single machine two-stage refrigeration unit according to claim 1, it is characterised in that the outlet of the oil strainer and
Magnetic valve II is provided between compressor, magnetic valve II is connected with control system.
6. a kind of single machine two-stage refrigeration unit according to claim any one of 1-5, it is characterised in that the compressor with
Between oil eliminator, evaporator, and between heat regenerator and oil eliminator, the interface of evaporator liquid in-out side uses flange
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363495.5U CN206469537U (en) | 2016-12-13 | 2016-12-13 | A kind of single machine two-stage refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363495.5U CN206469537U (en) | 2016-12-13 | 2016-12-13 | A kind of single machine two-stage refrigeration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206469537U true CN206469537U (en) | 2017-09-05 |
Family
ID=59711006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621363495.5U Expired - Fee Related CN206469537U (en) | 2016-12-13 | 2016-12-13 | A kind of single machine two-stage refrigeration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206469537U (en) |
-
2016
- 2016-12-13 CN CN201621363495.5U patent/CN206469537U/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: 20170905 Termination date: 20191213 |