CN209371582U - Refrigerant circulation system and air conditioning equipment - Google Patents
Refrigerant circulation system and air conditioning equipment Download PDFInfo
- Publication number
- CN209371582U CN209371582U CN201822188266.XU CN201822188266U CN209371582U CN 209371582 U CN209371582 U CN 209371582U CN 201822188266 U CN201822188266 U CN 201822188266U CN 209371582 U CN209371582 U CN 209371582U
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- flow path
- pressure
- refrigerant
- compressor
- storage unit
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 58
- 238000004378 air conditioning Methods 0.000 title claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 35
- 239000000725 suspension Substances 0.000 claims abstract description 22
- 239000002826 coolant Substances 0.000 claims description 43
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 230000003068 static effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 description 11
- 230000008676 import Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a refrigerant circulation system and air conditioning equipment, refrigerant circulation system includes: a refrigerant circuit comprising a first compressor (1) with an air-bearing and a condenser (6); the storage component (9) is used for providing gaseous refrigerant to the air suspension bearing; a first flow path (16) for guiding the refrigerant at a first position in the refrigerant circuit to the storage unit (9); a second flow path (2) for guiding the refrigerant at a second position higher in pressure than the first position in the refrigerant circuit to the storage unit (9); and the regulating valve is used for regulating the flow ratio of the first flow path (16) and the second flow path (2), so that the pressure of the gas delivered to the gas suspension bearing is adjustable.
Description
Technical field
The utility model relates to refrigeration technology fields, in particular to a kind of coolant circulating system and air-conditioning equipment.
Background technique
Centrifugal compressor be it is a kind of using centrifugal force come the compressor of compressed gas, mainly have at present oil-lubricated bearing,
Electromagnetic bearing.Using oil-lubricated bearing, needs to increase oil supply system, and lubricating oil can be also leaked into refrigerant, cause cold
Matchmaker's pollution, furthermore rubs between lubricating oil and rotor, can also bring energy loss；Using the centrifugal compressor of electromagnetic bearing
A whole set of control system of machine, bearing is complex, and system impact resistance is poor, additionally needs to increase protection bearing
Etc. additional power-off protection means.
Hydrostatic gas-lubricated bearing is a kind of pressure generated using gas between bearing and rotor to support the technology of rotor, is
A kind of oilless bearing, gas and friction rotor resistance are small, and do not need complicated control system, and structure is simple, therefore in recent years
Also start to be applied in centrifugal compressor.Porous media hydrostatic gas-lubricated bearing needs to provide bearing using outside gas supply
The gas of work, therefore the working performance for whether rationally directly affecting centrifugal compressor of its air supply system design.At present
Scheme in, one is extracting liquid refrigerants out from condenser using liquid pump machine, then through throttling set, gas-liquid separator etc. it
Lead to hydrostatic gas-lubricated bearing again afterwards, whole system structure is relative complex；Second scheme is by liquid refrigerants heating evaporation, and general
Gaseous coolant after evaporation is transported to hydrostatic gas-lubricated bearing, and this scheme will lead to gas supply discontinuously, influence hydrostatic gas-lubricated bearing
The stability of work.In two schemes, after compressor stable operation, gas is taken from hiigh pressure stage or low-pressure stage, it is this to take gas side
Formula, pressure are not easy to adjust, and supply gas pressure is likely larger than or is less than hydrostatic gas-lubricated bearing supply gas pressure, lead to pressurized air axis
It holds and is not sufficiently stable.
Utility model content
The utility model is intended to provide a kind of coolant circulating system and air-conditioning equipment, existing in the prior art is to improve
The nonadjustable problem of pressure for the gas that gas suspension bearing provides.
According to the one aspect of the utility model embodiment, the utility model provides a kind of coolant circulating system, refrigerant
The circulatory system includes:
Coolant loop, including the first compressor and condenser with gas suspension bearing；
Storage unit, for providing gaseous coolant to gas suspension bearing；
First flow path, for guiding the refrigerant of the first position in coolant loop into storage unit；
Second flow path, for guiding the refrigerant of the second position higher with the pressure of first position than in coolant loop into storage
Component；And
Regulating valve, for adjusting the flow-rate ratio of first flow path and second flow path.
Optionally, the first compressor includes:
First compression unit is connected to the input end of first flow path；
Second compression unit is connected to for compressing the refrigerant after the first compressing section compresses, and with the input end of second flow path.
Optionally,
First flow path is connected to the spiral case of the first compression unit；And/or
Second flow path is connected to the spiral case of the second compression unit.Optionally, the input end of first flow path and the first compressor
Air entry connection, the exhaust outlet connection of the first compressor of input end of second flow path.
Optionally, coolant circulating system further include:
Third flow path, including the input end being connected to condenser and the outlet end being connected to storage unit；
Second compressor is arranged in third flow path, for compressing the refrigerant for flowing to storage unit by condenser.
Optionally, coolant circulating system further includes controller, and controller and the second compressor communicate to connect, for first
The open stage or stop phase of compressor convey refrigerant into storage unit.
Optionally, coolant circulating system further include:
Pressure detecting part, for detecting the pressure of the refrigerant in storage unit；And
Controller is communicated to connect with regulating valve and pressure detecting part, in storage unit pressure less than first
When predetermined pressure, the flow-rate ratio of first flow path and second flow path is reduced by adjusting the aperture of regulating valve, or in storage unit
When pressure in part is greater than the second predetermined pressure, the flow-rate ratio of first flow path and second flow path is improved by adjusting the aperture of valve.
Optionally, regulating valve includes that the first regulating valve being located in first flow path and second be located in second flow path are adjusted
Valve.
Optionally, gas suspension bearing includes static pressure type gas suspension bearing.
According to the another aspect of the application, a kind of air-conditioning equipment is additionally provided, air-conditioning equipment includes above-mentioned refrigerant circulation
System.
Using the technical solution of the application, coolant circulating system includes for conveying the first of different pressures to storage unit
The flow-rate ratio of flow path and second flow path, two flow paths is adjustable, so that the pressure for realizing the gas conveyed to gas suspension bearing can
It adjusts.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 shows the schematic diagram of the coolant circulating system of the embodiments of the present invention；And
Fig. 2 shows the structural schematic diagrams of the compressor of the coolant circulating system of the embodiments of the present invention.
In figure:
1, the first compressor；2, second flow path；3, second one-way valve；4, the second regulating valve；5, pipeline；6, condenser；7,
Second compressor；8, third check valve；9, storage unit；10, temperature detection part；11, pressure detecting part；12, third tune
Save valve；13, import；14, the first regulating valve；15, the first check valve；16, first flow path；17, shaft；18, magnet portion；19,
One centrifugal impeller；20, the first diffuser；21, the second centrifugal impeller；22, the second diffuser；23, gas suspension bearing.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
Fig. 1 implements the schematic diagram of the present embodiment coolant circulating system.As shown in Figure 1, coolant circulating system includes refrigerant
Circuit, coolant loop include the first compressor 1, condenser 6, throttle part and evaporator.Condenser 6 and the first compressor 1
Exhaust outlet is connected to by pipeline 5.
It is entered in condenser 6 through the compressed refrigerant of the first compressor 1, the condensed refrigerant warp knuckle in condenser 6
Stream unit reducing pressure by regulating flow enters in evaporator, and the refrigerant after evaporating in evaporator returns to the air entry of the first compressor 1.
First compressor 1 includes the first compression unit 1a and the second compression unit 1b, the exhaust outlet and second of the first compression unit 1a
The air inlet of compression unit 1b is connected to, and the second compression unit 1b is for compressing through the first compressed refrigerant of compression unit 1a.
Fig. 2 shows the structural schematic diagrams of first compressor of the present embodiment, referring to figs. 1 and 2, the first compression
Machine 1 further includes the shaft 17 for driving the first compression unit 1a and the second compression unit 1.
In the present embodiment, the first compression unit 1a and the second compression unit 1b is separately mounted to the both ends of shaft 17.First pressure
Contracting portion 1a include the first centrifugal impeller 19 for accelerating refrigerant to be compressed and for being accelerated by the first centrifugal impeller 19 after
The first diffuser 20 that refrigerant compresses in it.First centrifugal impeller 19 is connected to the first end of shaft 17.
Second compression unit 1b includes for accelerating 21 He of the second centrifugal impeller through the first compressed refrigerant of compression unit 1a
The second diffuser 22 compressed in it for the refrigerant after being accelerated by the second centrifugal impeller 21.Second centrifugal impeller 21 is connected to
The second end of shaft 17.
First compressor 1 further includes motor, and motor includes the magnet portion 18 being nested in shaft 17 and coil.Magnet portion
18 drive shaft 17 to rotate under the action of hot-wire coil.
First compressor 1 further includes the gas suspension bearing 23 for carrying shaft 17.Optionally, gas suspension bearing 23 is quiet
Pressure type gas suspension bearing.
Coolant circulating system further includes for providing the storage unit 9 of gaseous coolant for gas suspension bearing 23, for will be cold
The refrigerant of first position in matchmaker circuit guides the first flow path 16 of storage unit 9 into and for will be than first in coolant loop
The refrigerant of the high second position of the pressure set guides the second flow path 2 of storage unit 9 into.
In order to enable storage unit 9 to provide pressure stable gas-liquid refrigerant to gas suspension bearing 23, coolant circulating system
It further include the regulating valve for adjusting the flow-rate ratio of first flow path 16 and second flow path 2, the coolant circulating system of the present embodiment is logical
The flow-rate ratio for the refrigerant that first flow path 16 and second flow path 2 are conveyed to storage unit 9 is overregulated to adjust the pressure in storage unit 9
Power, and then the pressure for the refrigerant that storage unit 9 can be conveyed to gas suspension bearing 23 is adjusted, it advantageously ensures that gas suspension bearing 23
The pressure of the refrigerant of conveying is stablized.
Optionally, first flow path 16 is connected to the spiral case of the first compression unit 1a；Second flow path 2 and the second compression unit 1b
Spiral case connection.In the present embodiment, first flow path 16 is connected to the first compression unit 1a of the first compressor 1, second flow path 2 with
Second compression unit 1b of the first compressor 1 is connected to.The pressure of refrigerant in second compression unit 1b is greater than in the first compression unit 1a
The pressure of refrigerant.
Optionally, first flow path 16 is connected to the exhaust outlet of the first compression unit 1a.Second flow path 2 and the second compression unit 1b
Exhaust outlet connection.
In some embodiments, the input end of first flow path 16 is connected to the air entry of the first compressor 1.First compressor
The refrigerant that 1 air entry introduces is the refrigerant in evaporator after evaporative cooling, and the temperature of the refrigerant is lower, is conducive to hang for gas
Floating axle holds 23 coolings.The input end of second flow path 2 is connected to the exhaust outlet of the first compressor 1, second flow path 2 be used for by pressure compared with
High refrigerant guides storage unit 9 into.
In some embodiments, the outlet of the input end and evaporator of first flow path 16, after evaporative cooling
Refrigerant guides storage unit 9 into, and to reduce the temperature of refrigerant in storage unit 9, the refrigerant of storage unit 9 is that gas suspension bearing 23 mentions
For suspension gas while also achieve for gas suspension bearing 23 cooling.
In the present embodiment, coolant circulating system further includes the temperature for detecting the temperature of the refrigerant in storage unit 9
Detection part 10.
Above-mentioned regulating valve include first be located in first flow path 16 regulating valve 14 and be located in second flow path 2 second
Regulating valve 4.When pressure in storage unit 9 is less than the first predetermined pressure, by reduce the first regulating valve 14 aperture and/or
The aperture of the second regulating valve 4 is improved to reduce the flow-rate ratio of first flow path 16 and second flow path 2, to improve in storage unit 9
Refrigerant pressure.When pressure in storage unit 9 is greater than the second predetermined pressure, by improve the first regulating valve 14 and/or
The aperture of the second regulating valve 4 is reduced to improve the flow-rate ratio of first flow path 16 and second flow path 2, to reduce in storage unit 9
Refrigerant pressure.
As shown in Figure 1, coolant circulating system further includes the first check valve 15 being located in first flow path 16, the first check valve
15 import is connected to coolant loop, and the outlet of the first check valve 15 is connected to storage unit 9.
Coolant circulating system further includes the second one-way valve 3 being located in second flow path 2, the import of second one-way valve 3 with it is cold
The outlet of matchmaker's circuit communication, second one-way valve 3 is connected to storage unit 9.
First compressor 1 further include the import 13 being connected to the inner cavity of the first compressor 1, for be connected to storage unit 9 and
The connection flow path of import 13 is provided with third regulating valve 12 in the connection flow path.
Coolant circulating system further includes the pressure detecting part 11 and control for detecting the pressure of the refrigerant in storage unit 9
Device processed, controller are communicated to connect with regulating valve and pressure detecting part 11, and controller is used for the pressure in storage unit 9 and is less than
When the first predetermined pressure, the flow-rate ratio of first flow path 16 and second flow path 2 is reduced by adjusting the aperture of regulating valve, or be used for
When pressure in storage unit 9 is greater than the second predetermined pressure, first flow path 16 and second flow path 2 are improved by adjusting the aperture of valve
Flow-rate ratio.
As shown in Figure 1, coolant circulating system further includes third flow path, third flow path includes the import being connected to condenser 6
End and the outlet end being connected to storage unit 9.Be provided with the second compressor 7 in third flow path, the second compressor 7 for compress by
Condenser 6 flows to the refrigerant of storage unit 9.
Controller and the second compressor 7 communicate to connect, for the open stage or stop phase in the first compressor 1 to depositing
It stores up and conveys refrigerant in component 9.
Third check valve 8 is equipped in third flow path, the import of third check valve 8 is connected to condenser, third check valve 8
Outlet is connected to storage unit 9.
According to the another aspect of the application, a kind of control method of coolant circulating system is additionally provided, control method includes:
Obtain the pressure information of the condensation in storage unit 9；And
When pressure is less than the first predetermined pressure, the flow-rate ratio of first flow path 16 and second flow path 2 is reduced, is greater than in pressure
When the second predetermined pressure, the flow-rate ratio of first flow path 16 and second flow path 2 is improved.First predetermined pressure is equal to or less than second
Predetermined pressure.
Control method further includes in 1 open stage of the first compressor or stop phase, by the second compressor 7 by condenser
6 convey refrigerant to storage unit 9.
It include two stages to supply process outside the first compressor 1, wherein the start and stop stage of the first compressor 1 uses
Plenum system identical with usual manner.At the start and stop stage of the first compressor 1, closes the first regulating valve 14, second and adjust
Valve 4 and third regulating valve 12, and storage is passed into after being compressed using the second compressor 7 from the pumping of 6 top of condenser
In component.
The first regulating valve 14, second is adjusted according to the pressure size that the pressure detecting part on storage unit 9 is shown to adjust
The state of valve 4 and third regulating valve 12.When the pressure in storage unit 9 reaches the operating pressure of hydrostatic gas-lubricated bearing, open
Third regulating valve 12, extraneous gas enter in the first compressor 1 from the import 13 of the first compressor 1, and pass through the first pressure
Runner inside contracting machine 1 reaches at hydrostatic gas-lubricated bearing, with to provide pressed gas.
After compressor normal work, the second compressor 7 is closed at this time, and is opened the first regulating valve 14 and second and adjusted
Valve 4 starts to take gas from the hiigh pressure stage and low-pressure stage of the first compressor 1 at this time, and the gas taken is passed into storage unit 9
It goes.According to the pressure size that pressure detecting part 11 detects, judge whether the pressure in storage unit 9 at this time meets static pressure gas
The operating pressure of body bearing.If the operating pressure hour for the pressure ratio hydrostatic gas-lubricated bearing that pressure detecting part 11 detects,
Adjustable second regulating valve, from hiigh pressure stage more take some gas；If the pressure ratio static pressure that pressure detecting part 11 detects
When the operating pressure of gas bearing is big, corresponding adjustable first regulating valve takes a little gas more from low-pressure stage.Using this confession
Gas mode can very easily adjust supply gas pressure size, so as to meet the hydrostatic gas-lubricated bearing of a variety of operating pressures, and
And pressure is easy to adjust reliable, improves the job stability of hydrostatic gas-lubricated bearing.
The foregoing is merely the exemplary embodiments of the utility model, are not intended to limit the utility model, all in this reality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Claims (10)
1. a kind of coolant circulating system characterized by comprising
Coolant loop, including the first compressor (1) and condenser (6) with gas suspension bearing；
Storage unit (9), for providing gaseous coolant to the gas suspension bearing；
First flow path (16), for guiding the refrigerant of the first position in the coolant loop into the storage unit (9)；
Second flow path (2), for guiding the refrigerant of the second position higher with the pressure of first position than in the coolant loop into
The storage unit (9)；And
Regulating valve, for adjusting the flow-rate ratio of the first flow path (16) and the second flow path (2).
2. coolant circulating system according to claim 1, which is characterized in that first compressor (1) includes:
First compression unit (1a) is connected to the input end of the first flow path (16)；
Second compression unit (1b), for compress through the compressed refrigerant of first compression unit (1a), and with the second flow path
(2) input end connection.
3. coolant circulating system according to claim 2, which is characterized in that
The first flow path (16) is connected to the spiral case of first compression unit (1a)；And/or
The second flow path (2) is connected to the spiral case of second compression unit (1b).
4. coolant circulating system according to claim 1, which is characterized in that the input end of the first flow path (16) and
The air entry of one compressor (1) is connected to, the exhaust outlet connection of the first compressor (1) described in the input end of the second flow path (2).
5. coolant circulating system according to claim 1, which is characterized in that further include:
Third flow path, including the input end being connected to the condenser (6) and the outlet end being connected to the storage unit (9)；
Second compressor (7) is arranged in the third flow path, flows to the storage unit by the condenser (6) for compressing
(9) refrigerant.
6. coolant circulating system according to claim 5, which is characterized in that it further include controller, the controller and institute
The second compressor (7) communication connection is stated, for the open stage or stop phase in first compressor (1) to the storage
Refrigerant is conveyed in component (9).
7. coolant circulating system according to claim 1, which is characterized in that further include:
Pressure detecting part (11), for detecting the pressure of the refrigerant in the storage unit (9)；And
Controller is communicated to connect with the regulating valve and the pressure detecting part (11), in the storage unit (9)
When interior pressure is less than the first predetermined pressure, the first flow path (16) and described the are reduced by adjusting the aperture of the regulating valve
The flow-rate ratio of two flow paths (2), or in the storage unit (9) pressure be greater than the second predetermined pressure when, by adjusting
The aperture of the valve improves the flow-rate ratio of the first flow path (16) and the second flow path (2).
8. coolant circulating system according to claim 1, which is characterized in that the regulating valve is described first-class including being located at
The first regulating valve (14) in road (16) and the second regulating valve (4) being located in the second flow path (2).
9. coolant circulating system according to claim 1, which is characterized in that the gas suspension bearing includes that static pressure type gas is outstanding
Floating axle is held.
10. a kind of air-conditioning equipment, which is characterized in that including coolant circulating system described in any item of the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188266.XU CN209371582U (en) | 2018-12-25 | 2018-12-25 | Refrigerant circulation system and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188266.XU CN209371582U (en) | 2018-12-25 | 2018-12-25 | Refrigerant circulation system and air conditioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209371582U true CN209371582U (en) | 2019-09-10 |
Family
ID=67830720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822188266.XU Withdrawn - After Issue CN209371582U (en) | 2018-12-25 | 2018-12-25 | Refrigerant circulation system and air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209371582U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134514A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Refrigerant circulation system, air conditioning device, and refrigerant circulation system control method |
| WO2022048175A1 (en) * | 2020-09-02 | 2022-03-10 | 珠海格力电器股份有限公司 | Gas supply system of gas bearing for compressor, operation method and refrigeration system |
| US11781790B2 (en) | 2020-06-11 | 2023-10-10 | Beijing Baidu Netcom Science And Technology Co., Ltd. | Refrigerating system |
-
2018
- 2018-12-25 CN CN201822188266.XU patent/CN209371582U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134514A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Refrigerant circulation system, air conditioning device, and refrigerant circulation system control method |
| CN111365909A (en) * | 2018-12-25 | 2020-07-03 | 珠海格力电器股份有限公司 | Refrigerant circulation system, air conditioning equipment and control method of refrigerant circulation system |
| CN111365909B (en) * | 2018-12-25 | 2024-04-05 | 珠海格力电器股份有限公司 | Refrigerant circulation system, air conditioning equipment and control method of refrigerant circulation system |
| US11781790B2 (en) | 2020-06-11 | 2023-10-10 | Beijing Baidu Netcom Science And Technology Co., Ltd. | Refrigerating system |
| WO2022048175A1 (en) * | 2020-09-02 | 2022-03-10 | 珠海格力电器股份有限公司 | Gas supply system of gas bearing for compressor, operation method and refrigeration system |
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