CN106440563A - Liquid impact prevention refrigerating system and control method thereof - Google Patents
Liquid impact prevention refrigerating system and control method thereof Download PDFInfo
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- CN106440563A CN106440563A CN201611022507.2A CN201611022507A CN106440563A CN 106440563 A CN106440563 A CN 106440563A CN 201611022507 A CN201611022507 A CN 201611022507A CN 106440563 A CN106440563 A CN 106440563A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a liquid impact prevention refrigerating system and a control method thereof. The liquid impact prevention refrigerating system comprises a compressor, N condensers which are connected to the outlet of the compressor in parallel, a non-return valve, a liquid accumulator, a regulating valve, an expanding valve, an evaporator and a controller, wherein the non-return valve, the liquid accumulator, the regulating valve, the expanding valve and the evaporator are sequentially connected with outlets of the N condensers; the controller is used for controlling operation of the liquid impact prevention refrigerating system; the outlet of the evaporator is connected with the inlet of the compressor; a plurality of solenoid valves used for regulating a condensation area are arranged between the inlet of the condenser and the outlet of the compressor; the outlet of each solenoid valve is connected to the inlet of a liquid collector; and the liquid collector is connected with a liquid accumulator through a capillary tube. The liquid impact prevention refrigerating system disclosed by the invention realizes conveying a liquid-state refrigerant which is leaked to the valve bodies of the solenoid valves to the liquid accumulator, so that a liquid impact phenomenon generated in opening processes of the solenoid valves is avoided, and therefore, reliability of the system is improved.
Description
Technical field
The present invention relates to artificial cooling technical field, particularly to a kind of liquid impact prevention refrigeration system and its control method.
Background technology
In air-cooled cryogenic refrigerating system, in order to adjust condensing pressure, except using variable frequency adjustment air quantity or blower fan
Classification carries out beyond on off control, it usually needs increase magnetic valve or other motor switch formula valve before condenser inlet, that is,
When environment temperature is lower, being turned on and off thus realizing in running order condenser area by electromagnetic valve for adjusting
Regulation, realize regulation to refrigeration system condensing pressure.Because magnetic valve still suffers from down very small amount or micro in off position
Interior leakage, especially refrigeration system is under low ambient temperature in a long time, leaks into the cold-producing medium after magnetic valve and leads to
It is often to exist in liquid form, now the pressure reduction before and after magnetic valve is larger, the liquid system when magnetic valve is opened, after magnetic valve valve
Cryogen, under the gaseous refrigerant of High Pressure Difference, high speed acts on, impacts condenser dry pipe with high flow velocity, produces powerful shaking
Dynamic.Under cryogenic refrigeration operating mode, magnetic valve frequently switch on regulation, the dry pipe to condenser and its arm can produce destructiveness
Effect, longtime running will lead to condenser dry pipe and its dry pipe rupture, and cold-producing medium leaks, and whole refrigeration system cannot be normal
Run.
It can be seen that, prior art could be improved and improves.
Content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of liquid impact prevention refrigeration system and its
Control method it is intended to prevent adjusts and occurs liquid hammer existing after the valve of magnetic valve during the condensation area of described liquid impact prevention refrigeration system
As.
In order to achieve the above object, this invention takes technical scheme below：
A kind of liquid impact prevention refrigeration system, including compressor, is connected in parallel the N platform condenser of the outlet of described compressor, connects institute
State the non-return valve of N platform condensator outlet, connect described check valve outlet port and be used for storing the reservoir of liquid refrigerants, be sequentially connected institute
State regulating valve, expansion valve and the evaporimeter of the outlet of reservoir, and the control for controlling described liquid impact prevention refrigeration system to run
Device processed, the outlet of described evaporimeter connect compressor entrance it is characterised in that（N-1）Each in condenser described in platform
It is respectively arranged with 1 magnetic valve between the entrance of platform condenser and the outlet of compressor；Each electromagnetic valve outlet described with described
It is disposed with liquid trap and capillary between reservoir；It is provided with described non-return valve and pass for the pressure detecting condensing pressure
Sensor；Each magnetic valve described, non-return valve, regulating valve and compressor are connected with described controller respectively；Described N is >=2
Integer.
In described liquid impact prevention refrigeration system, described liquid trap includes being connected to the port of export of each described magnetic valve
's（N-1）Platform liquid trap, described（N-1）The outlet of platform liquid trap connects the entrance of described capillary respectively.
In described liquid impact prevention refrigeration system, described（N-1）The outlet of each liquid trap and capillary in platform liquid trap
Entrance between be arranged in series 2 check valves.
In described liquid impact prevention refrigeration system, the outlet of described N platform condenser is respectively arranged with a check valve, described each
The outlet of individual check valve connects the entrance of described non-return valve.
In described liquid impact prevention refrigeration system, between the outlet of described reservoir and the entrance of regulating valve, it is provided with drying
Device.
In described liquid impact prevention refrigeration system, described expansion valve is electric expansion valve or heating power expansion valve.
In described liquid impact prevention refrigeration system, described evaporimeter is dry evaporator, finned evaporator, full-liquid type evaporate
One of device and downward film evaporator.
The present invention provides the control method of above-mentioned liquid impact prevention refrigeration system, the method comprising the steps of：
S100, the described N platform condenser of setting respectively the first condenser, the second condenser, by that analogy, to N condenser, if
Surely the magnetic valve connecting the first condenser inlet is the first magnetic valve, and the magnetic valve connecting the second condenser inlet is the second electromagnetism
Valve, by that analogy, connects the（N-1）The magnetic valve of platform condenser inlet is the（N-1）Magnetic valve；
S200, in the controller default condensing pressure have：P1, P2, by that analogy, until P（N-1）；Set condensing pressure
The amplitude of accommodation is △ P；Set compressor start time delay as T1, set compressor shutdown time delay as T2；
After S300, described controller receive starting-up signal, control and regulation valve is opened, and sends start-up command to compressor；Warp
Cross compressor start after time delay T1；
Testing result is simultaneously fed back to described controller, described controller root by S400, described pressure sensor detection condensing pressure
It is compared with default condenser pressure and the amplitude of accommodation according to the testing result receiving, and control each magnetic valve described
It is turned on and off state；
After S500, described controller receive stopping signal, control and regulation valve cuts out, and sends halt instruction to compressor, warp
Cross compressor shutdown after time delay T2.
In the described control method of liquid impact prevention refrigeration system, described step S400 specifically includes：
Reach P1+ △ P when described pressure sensor detects condensing pressure value, controller controls the first magnetic valve to open, and works as institute
State pressure sensor and condensing pressure value is detected and reach P1, controller controls the first closed electromagnetic valve；When described pressure sensor
Condensing pressure value is detected and reach P2+ △ P, controller controls the second magnetic valve to open, when described pressure sensor detect cold
Solidifying pressure value reaches P2, and controller controls the second closed electromagnetic valve；By that analogy, when described pressure sensor detects condensation pressure
Force value reaches P（N-1）+ △ P, controller controls the（N-1）Magnetic valve is opened, when described pressure sensor detects condensing pressure
Value reaches P（N-1）, controller controls the（N-1）Closed electromagnetic valve.
Beneficial effect：
Compared to existing technology, the present invention passes through to be provided for adjusting cryosurface between the entrance of condenser and the outlet of compressor
Long-pending multiple magnetic valves, each electromagnetic valve outlet described connects to the entrance of liquid trap, and described liquid trap is connected by capillary
Reservoir is it is achieved that be delivered to reservoir by the liquid refrigerants leaking to after the valve of magnetic valve, thus avoiding described magnetic valve
Produce liquid hit phenomenon in opening process, improve the reliability of system.
Brief description
The structural representation of the liquid impact prevention refrigeration system that Fig. 1 provides for the present invention.
The flow chart of the control method of the liquid impact prevention refrigeration system that Fig. 2 provides for the present invention.
Specific embodiment
The present invention provides a kind of liquid impact prevention refrigeration system and its control method, for make the purpose of the present invention, technical scheme and
Effect is clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that herein
Described specific embodiment only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the present invention provides a kind of liquid impact prevention refrigeration system.
Described liquid impact prevention refrigeration system includes compressor 10, is connected in parallel the N platform condensation of the outlet 102 of described compressor
Device 20, connects the non-return valve 21 of described N platform condenser 20 outlet, connects described check valve outlet port and is used for storing the storage of liquid refrigerants
Liquid device 22, is sequentially connected regulating valve 24, expansion valve 30 and the evaporimeter 40 of the outlet of described reservoir 22, and is used for controlling institute
State the controller of liquid impact prevention refrigeration system operation（In figure is not shown）, the entrance of the outlet connection compressor of described evaporimeter 40
101 it is characterised in that（N-1）The outlet 102 of the entrance of each condenser in condenser 20 described in platform and compressor it
Between be respectively arranged with 1 magnetic valve；It is disposed with liquid trap 60 between each electromagnetic valve outlet described and described reservoir 22
With capillary 70；Pressure sensor for detecting condensing pressure is provided with described non-return valve 21（In figure is not shown）；Described
Each magnetic valve, non-return valve 21, regulating valve 24 and compressor 10 are connected with described controller respectively；Described N is >=2 whole
Number.
For the ease of illustrating and understanding, in the present embodiment, set N=4, that is, described liquid impact prevention refrigeration system comprises 4 parallel connections
The condenser of setting, the respectively first condenser 201, the second condenser 202, the 3rd condenser 203 and the 4th condenser
204；It is provided with the first magnetic valve 501, described second condenser between the entrance of described first condenser 201 and compressor outlet
It is provided with the second magnetic valve 502, the entrance of the 3rd condenser 203 and compressor outlet between 202 entrance and compressor outlet
Between be provided with the 3rd magnetic valve 503.
Specifically, described controller controls described regulating valve 24 to open according to the starting-up signal receiving, and controls described
Compressor 10 starts, and described compressor 10 is by low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant, and exports to cold
Condenser 20 is condensed into the liquid refrigerants of cryogenic high pressure, and the liquid refrigerants that condenser 20 exports cryogenic high pressure is deposited to reservoir 22
Storage and buffering, reservoir 22 exports cryogenic high pressure liquid refrigerants and to expansion valve 30 and is converted into the liquid refrigerants of low-temp low-pressure, institute
The liquid refrigerants stating low-temp low-pressure enters the gaseous coolant that described evaporimeter 40 endothermic gasification is low-temp low-pressure and enters described pressure
Contracting machine 10 is it is achieved that the working cycles of refrigerant.In running, detected according to the pressure sensor of setting on described non-return valve
To condensing pressure control the first magnetic valve 501, being turned on and off of the second magnetic valve 502 and the 3rd magnetic valve 503, thus
Change the condensation area under working condition.
Due to described first magnetic valve 501, the second electromagnetism with 502 and the 3rd magnetic valve 503 the port of export be connected to collect
Liquid device 60, therefore, when described first magnetic valve 501, the second magnetic valve 502 and the 3rd magnetic valve 503 are closed,
Leak to the liquid refrigerants after each magnetic valve valve and flow to described liquid trap 60 in time, described liquid trap 60 passes through capillary 70 will
The liquid refrigerants collected is delivered to reservoir 22, i.e. do not have liquid refrigerants after the valve of each magnetic valve under closed mode, when
Magnetic valve will not occur liquid hit phenomenon when opening, and therefore, the pipeline between each magnetic valve and condenser inlet also will not occur
Vibration and rupturing, it is to avoid refrigerant leaks outside because of pipeline breaking.
Further, in described liquid impact prevention refrigeration system, described liquid trap 60 includes being connected to each described electricity
The port of export of magnet valve（N-1）Platform liquid trap, described（N-1）The outlet of platform liquid trap connects the entrance of described capillary respectively.
Due to setting N=4 in the present embodiment, that is, described liquid trap includes the first liquid trap connecting the first electromagnetic valve outlet
601, connect the second liquid trap 602 of the second electromagnetic valve outlet, and the 3rd liquid trap 603 connecting the 3rd electromagnetic valve outlet；
The entrance all with described capillary 70 for the outlet of described first liquid trap 601, the second liquid trap 602 and the 3rd liquid trap 603
Connect.By connecting each electromagnetic valve outlet to independent liquid trap, facilitate to the liquid refrigerants after each magnetic valve valve
Collection, also improve the total capacity that liquid refrigerants collected by liquid trap simultaneously, adapt to the different secondary refrigerant leakage amount of magnetic valve, enter one
Step guarantee system is normally run.
Further, in described liquid impact prevention refrigeration system, described（N-1）In platform liquid trap 60, each liquid trap goes out
2 check valves have been arranged in series it between mouth and the entrance of capillary 70.Described two check valves being disposed in series are prevented effectively
Stop the liquid refrigerants in described capillary and flowed backward to described liquid trap, further increase described liquid impact prevention refrigeration system can
By property.
Further, in described liquid impact prevention refrigeration system, the outlet of described N platform condenser 20 is respectively arranged with a list
To valve, the outlet of each check valve described connects the entrance of described non-return valve 21.Outlet due to every condenser is provided with
Check valve, it is therefore prevented that the liquid refrigerants in system flows backward to condenser, improves the reliability of system, has been also convenient for each simultaneously
Can the carrying out separate repair and not affect other condensers of condenser.
It is preferred that being provided with a check valve between described non-return valve 21 and reservoir 22, prevent the liquid of reservoir 22
Refrigerant flows backwards.
Further, in described liquid impact prevention refrigeration system, the outlet of described reservoir 22 and the entrance of regulating valve 24 it
Between be provided with drier 24.Described drier dehydrates in refrigerant, it is to avoid the moisture in system is in capillary 70
Or expansion valve 30 etc. ice blockage pipeline, improve system reliability.
Further, in described liquid impact prevention refrigeration system, described expansion valve 30 is electric expansion valve or heating power expansion valve.
Further, in described liquid impact prevention refrigeration system, described evaporimeter 40 is dry evaporator, finned evaporation
One of device, flooded evaporator and downward film evaporator.
In sum, the liquid impact prevention refrigeration system that the present invention provides pass through condenser entrance and compressor outlet it
Between be provided for adjust condensation area multiple magnetic valves, each electromagnetic valve outlet described connects to the entrance of liquid trap, described
Liquid trap connects reservoir it is achieved that the liquid refrigerants leaking to after the valve of magnetic valve is delivered to reservoir by capillary,
Thus avoiding generation liquid hit phenomenon in described magnetic valve opening process, improve the reliability of system.By by each electromagnetism
Valve outlet port is respectively connecting to independent liquid trap, improves the total capacity that liquid refrigerants collected by liquid trap, adapts to magnetic valve different
Secondary refrigerant leakage amount, be further ensured that system is normally run.
A kind of control method of liquid impact prevention refrigeration system described above, the method comprising the steps of：
S100, the described N platform condenser of setting respectively the first condenser, the second condenser, by that analogy, to N condenser, if
Surely the magnetic valve connecting the first condenser inlet is the first magnetic valve, and the magnetic valve connecting the second condenser inlet is the second electromagnetism
Valve, by that analogy, connects the（N-1）The magnetic valve of platform condenser inlet is the（N-1）Magnetic valve；
S200, in the controller default condensing pressure have：P1, P2, by that analogy, until P（N-1）；Set condensing pressure
The amplitude of accommodation is △ P；Set compressor start time delay as T1, set compressor shutdown time delay as T2；
After S300, described controller receive starting-up signal, control and regulation valve is opened, and sends start-up command to compressor；Warp
Cross compressor start after time delay T1；
Testing result is simultaneously fed back to described controller, described controller root by S400, described pressure sensor detection condensing pressure
It is compared with default condenser pressure and the amplitude of accommodation according to the testing result receiving, and control each magnetic valve described
It is turned on and off state；
After S500, described controller receive stopping signal, control and regulation valve cuts out, and sends halt instruction to compressor, warp
Cross compressor shutdown after time delay T2.
Further, in the described control method of liquid impact prevention refrigeration system, described step S400 specifically includes：
Reach P1+ △ P when described pressure sensor detects condensing pressure value, controller controls the first magnetic valve to open, and works as institute
State pressure sensor and condensing pressure value is detected and reach P1, controller controls the first closed electromagnetic valve；When described pressure sensor
Condensing pressure value is detected and reach P2+ △ P, controller controls the second magnetic valve to open, when described pressure sensor detect cold
Solidifying pressure value reaches P2, and controller controls the second closed electromagnetic valve；By that analogy, when described pressure sensor detects condensation pressure
Force value reaches P（N-1）+ △ P, controller controls the（N-1）Magnetic valve is opened, when described pressure sensor detects condensing pressure
Value reaches P（N-1）, controller controls the（N-1）Closed electromagnetic valve.
In sum, the liquid impact prevention refrigeration system that the present invention provides is passed through to detect condensing pressure and feed back to controller, institute
State controller according to the condensing pressure detecting and each condensing pressure value default and adjustable range, control each magnetic valve
Be turned on and off, it is achieved thereby that automatically adjusting the condensation area in described refrigeration system it is ensured that refrigeration system is normally run.
It is understood that for those of ordinary skills, with technology according to the present invention scheme and its can send out
Bright design in addition equivalent or change, and all these change or replace the guarantor that all should belong to appended claims of the invention
Shield scope.
Claims (9)
1. a kind of liquid impact prevention refrigeration system, including compressor, is connected in parallel the N platform condenser of the outlet of described compressor, connects
The non-return valve of described N platform condensator outlet, connects described check valve outlet port and is used for storing the reservoir of liquid refrigerants, be sequentially connected
The regulating valve of the outlet of described reservoir, expansion valve and evaporimeter, and for controlling described liquid impact prevention refrigeration system to run
Controller, the outlet of described evaporimeter connect compressor entrance it is characterised in that（N-1）Every in condenser described in platform
It is respectively arranged with 1 magnetic valve between the entrance of one condenser and the outlet of compressor；Each electromagnetic valve outlet described and institute
State and between reservoir, be disposed with liquid trap and capillary；Pressure for detecting condensing pressure is provided with described non-return valve
Sensor；Each magnetic valve described, non-return valve, regulating valve and compressor are connected with described controller respectively；Described N is >=2
Integer.
2. liquid impact prevention refrigeration system according to claim 1 is it is characterised in that described liquid trap includes being connected to respectively
The port of export of individual described magnetic valve（N-1）Platform liquid trap, described（N-1）The outlet of platform liquid trap connects described capillary respectively
Entrance.
3. liquid impact prevention refrigeration system according to claim 2 is it is characterised in that described（N-1）Each in platform liquid trap
It has been arranged in series 2 check valves between the outlet of liquid trap and the entrance of capillary.
4. liquid impact prevention refrigeration system according to claim 3 is it is characterised in that the outlet of described N platform condenser sets respectively
It is equipped with a check valve, the outlet of each check valve described connects the entrance of described non-return valve.
5. liquid impact prevention refrigeration system according to claim 4 is it is characterised in that the outlet of described reservoir and regulating valve
It is provided with drier between entrance.
6. the liquid impact prevention refrigeration system according to any one of claim 1-4 is it is characterised in that described expansion valve is that electronics is swollen
Swollen valve or heating power expansion valve.
7. the liquid impact prevention refrigeration system according to any one of claim 1-4 is it is characterised in that described evaporimeter steams for dry type
Send out one of device, finned evaporator, flooded evaporator and downward film evaporator.
8. a kind of control method of liquid impact prevention refrigeration system according to claim 7 is it is characterised in that methods described includes
Following steps：
S100, the described N platform condenser of setting respectively the first condenser, the second condenser, by that analogy, to N condenser, if
Surely the magnetic valve connecting the first condenser inlet is the first magnetic valve, and the magnetic valve connecting the second condenser inlet is the second electromagnetism
Valve, by that analogy, connects the（N-1）The magnetic valve of platform condenser inlet is the（N-1）Magnetic valve；
S200, in the controller default condensing pressure have：P1, P2, by that analogy, until P（N-1）；Set condensing pressure
The amplitude of accommodation is △ P；Set compressor start time delay as T1, set compressor shutdown time delay as T2；
After S300, described controller receive starting-up signal, control and regulation valve is opened, and sends start-up command to compressor；Warp
Cross compressor start after time delay T1；
Testing result is simultaneously fed back to described controller, described controller root by S400, described pressure sensor detection condensing pressure
It is compared with default condenser pressure and the amplitude of accommodation according to the testing result receiving, and control each magnetic valve described
It is turned on and off state；
After S500, described controller receive stopping signal, control and regulation valve cuts out, and sends halt instruction to compressor, warp
Cross compressor shutdown after time delay T2.
9. the control method of liquid impact prevention refrigeration system according to claim 8 is it is characterised in that described step S400 is concrete
Including：
Reach P1+ △ P when described pressure sensor detects condensing pressure value, controller controls the first magnetic valve to open, and works as institute
State pressure sensor and condensing pressure value is detected and reach P1, controller controls the first closed electromagnetic valve；When described pressure sensor
Condensing pressure value is detected and reach P2+ △ P, controller controls the second magnetic valve to open, when described pressure sensor detect cold
Solidifying pressure value reaches P2, and controller controls the second closed electromagnetic valve；By that analogy, when described pressure sensor detects condensation pressure
Force value reaches P（N-1）+ △ P, controller controls the（N-1）Magnetic valve is opened, when described pressure sensor detects condensing pressure
Value reaches P（N-1）, controller controls the（N-1）Closed electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022507.2A CN106440563A (en) | 2016-11-21 | 2016-11-21 | Liquid impact prevention refrigerating system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022507.2A CN106440563A (en) | 2016-11-21 | 2016-11-21 | Liquid impact prevention refrigerating system and control method thereof |
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| Publication Number | Publication Date |
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| CN106440563A true CN106440563A (en) | 2017-02-22 |
Family
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| CN201611022507.2A Withdrawn CN106440563A (en) | 2016-11-21 | 2016-11-21 | Liquid impact prevention refrigerating system and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525015A (en) * | 2020-04-15 | 2021-10-22 | 青岛朗进新能源设备有限公司 | A new energy bus heat pump air conditioning unit and its control method |
| CN114320835A (en) * | 2022-01-04 | 2022-04-12 | 国家石油天然气管网集团有限公司 | Centralized series cooling system of electrically-driven compressor unit and multi-target loop control method |
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| JP2007071438A (en) * | 2005-09-06 | 2007-03-22 | Denso Corp | Refrigeration cycle device for freezer car |
| CN105910323A (en) * | 2016-06-03 | 2016-08-31 | 广东申菱环境系统股份有限公司 | Refrigerating system, refrigerating unit and refrigerating control method for refrigerating unit |
| CN206352915U (en) * | 2016-11-21 | 2017-07-25 | 广东申菱环境系统股份有限公司 | A kind of liquid impact prevention refrigeration system |
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2016
- 2016-11-21 CN CN201611022507.2A patent/CN106440563A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007071438A (en) * | 2005-09-06 | 2007-03-22 | Denso Corp | Refrigeration cycle device for freezer car |
| CN105910323A (en) * | 2016-06-03 | 2016-08-31 | 广东申菱环境系统股份有限公司 | Refrigerating system, refrigerating unit and refrigerating control method for refrigerating unit |
| CN206352915U (en) * | 2016-11-21 | 2017-07-25 | 广东申菱环境系统股份有限公司 | A kind of liquid impact prevention refrigeration system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113525015A (en) * | 2020-04-15 | 2021-10-22 | 青岛朗进新能源设备有限公司 | A new energy bus heat pump air conditioning unit and its control method |
| CN114320835A (en) * | 2022-01-04 | 2022-04-12 | 国家石油天然气管网集团有限公司 | Centralized series cooling system of electrically-driven compressor unit and multi-target loop control method |
| CN114320835B (en) * | 2022-01-04 | 2024-05-14 | 国家石油天然气管网集团有限公司 | Centralized series cooling system of electric drive compressor unit and multi-target loop control method |
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Inventor after: Su Bing Inventor after: Zhang Jingwei Inventor after: Zhang Fengge Inventor after: Gu Mingwei Inventor after: Li Jianbo Inventor after: Liu Zhansheng Inventor after: Ou Guanfeng Inventor after: Wu Ying Inventor after: Zeng Dongsheng Inventor before: Zhang Jingwei Inventor before: Li Jianbo Inventor before: Wang Shuwan Inventor before: Ye Songmei |
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Application publication date: 20170222 |
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