CN109520162A - Frequency conversion host coolant system - Google Patents
Frequency conversion host coolant system Download PDFInfo
- Publication number
- CN109520162A CN109520162A CN201811421180.5A CN201811421180A CN109520162A CN 109520162 A CN109520162 A CN 109520162A CN 201811421180 A CN201811421180 A CN 201811421180A CN 109520162 A CN109520162 A CN 109520162A
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- China
- Prior art keywords
- condenser
- outlet
- compressor
- machine system
- import
- 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.)
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Classifications
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- 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
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Frequency conversion host coolant system provided by the invention, including outer machine system interconnected and interior machine system；Its China and foreign countries' machine system includes: compressor, the outlet of the import of compressor and interior machine system；Condenser, the import of condenser and the outlet of compressor, the outlet of condenser and the inlet communication of interior machine system；Condensation fan, condensation fan are matched with condenser；Unidirectional stop valve, unidirectional stop valve are arranged on the pipeline of the outlet of connection condenser and the import of interior machine system；Bypass conduit, one end of bypass conduit and the outlet of condenser, the other end of bypass conduit and the inlet communication of compressor；Bypass solenoid valve, bypass solenoid valve are arranged in bypass conduit.Compared with prior art, beneficial effects of the present invention are as follows: on the one hand can save the energy of frequent starting loss, on the other hand can reduce the fluctuation of loading demand temperature, really realize fast-refrigerating, steady temperature control, the purpose of energy-saving consumption.
Description
Technical field
The present invention relates to refrigeration system, refrigeration control technology, the technologies such as frequency control, more particularly to a kind of frequency conversion host
Coolant system.
Background technique
Miscellaneous super quotient is more more and more universal with the promotion of economic level, especially small-sized convenience store.Convenience store
In daily operation, the electricity charge are the maximum expenditures except being only second to manually, and in all electricity charge, the power consumption of refrigeration system is almost accounted for
The 50%-60% of entire power consumption.
Recently as the fast development of converter technique, more and more super quotient systems systems start to use frequency conversion refrigeration unit into
Row refrigeration, theoretically frequency converter sets, which determine the energy conservation of frequency unit than tradition, can reach 30-40%, while temperature control is also more stable, and cooling is more
Fastly.But in practical application, often energy conservation only has 15%-20% or so, and cooling rate is also less than and determines frequency unit, and temperature control exists
It is also fluctuated in certain applications very big.To find out its cause, main as follows:
1. surpass quotient system system in interior machine equipment (such as air curtain cabinet, middle island cabinet, rear supply freezer etc.) and host be two
Independent individual.I.e. usually outer machine is the manufacturer's offer for specially making outer machine, and interior machine equipment is provided by special manufacturer, temperature conditioning unit
Usually in interior generator terminal.
2. host manufacturer for convenience and the docking of interior machine, will not directly acquire the terminal temperature of interior machine acquisition, but according to
The interior machine degree of superheat and pressure of inspiration(Pi) operate to adjust compressor variable frequency.The usual degree of superheat can be evaluated whether according to application environment.
3. interior chance closes the solenoid valve of interior generator terminal after interior machine temperature, which reaches, needs temperature, so as to cause system suction
Atmospheric pressure is too low.Monitoring is acquired to pressure of inspiration(Pi) since outer machine has, when this situation occurs, outer machine may turn off pressure
Contracting machine, until interior machine is again turned on solenoid valve, compressor is restarted.
4. since the interior machine of super quotient system system is largely open system (being different from freezer), and due to flow of personnel
Reason will lead to temperature that interior machine the needs fast temperature rising after compressor stopping.When temperature, which reaches, must start up system, interior machine
It may turn on solenoid valve.At this moment, system needs compressor to start rapidly, while fast-refrigerating guarantees that temperature reaches and needs temperature.
But outer machine system is in order to protect compressor, before opening after compressor stopping to second, if 1 shutdown intervals of compressor are inadequate
3 minutes, compressor can be forced to stop enough to restart after three minutes.It may continue to rise which results in temperature, so as to cause control
Mild invariable frequency compressor is the same, fluctuates larger.
5. after interior organ closes solenoid valve, outer machine can also shut down compressor as described in the 4th point, although machine exists other than institute
Frequency conversion debugging has been carried out during temperature adjustment, but has understood frequent start and stop compressor, is unable to reach optimal energy conservation.Simultaneously because 3
Minute protection reason, causes compressor that can't start on demand, therefore temperature control fluctuation is also larger.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of frequency conversion hosts for solving above-mentioned technical problem
Coolant system.
In order to solve the above technical problems, frequency conversion host coolant system provided by the invention, including outer machine system interconnected
System and interior machine system；Wherein
The outer machine system includes:
Compressor, the outlet of the import of the compressor and the interior machine system；
Condenser, the outlet of the import of the condenser and the compressor, the outlet of the condenser with it is described
The inlet communication of interior machine system；
Condensation fan, the condensation fan are matched with the condenser；
Unidirectional stop valve, the unidirectional stop valve be arranged in the outlet for being connected to the condenser and the interior machine system into
On the pipeline of mouth；
Bypass conduit, the outlet of one end of the bypass conduit and the condenser, the bypass conduit it is another
The inlet communication at end and the compressor；
Bypass solenoid valve, the bypass solenoid valve are arranged in the bypass conduit.
Preferably, the interior machine system includes:
Evaporator, the outlet of the import of the evaporator and the condenser, the outlet of the evaporator with it is described
The inlet communication of compressor；
Going out for the connection condenser is arranged in interior electromechanics magnet valve and expansion valve, the interior electromechanical magnet valve and the expansion valve
On the pipeline of the import of mouth and the evaporator；
Evaporation fan, the evaporation fan are matched with the evaporator.
Preferably, first pressure is equipped on the pipeline of the outlet for the import and the evaporator for being connected to the compressor to pass
Sensor.
Preferably, the first pressure sensor is low-pressure sensor.
Preferably, second pressure is equipped on the pipeline of the outlet for being connected to the compressor and the import of the condenser to pass
Sensor.
Preferably, the second pressure sensor is high-pressure pressure sensor.
Compared with prior art, beneficial effects of the present invention are as follows: having the frequency conversion control as existing frequency conversion host system
The function of temperature, while can realize that compressor is not shut down, and still lowest frequency is kept to transport in the case that interior machine system solenoid valve is closed
Turn；After interior machine system opens solenoid valve, compressor can fast-refrigerating, do not limited by protection in 3 minutes.On the one hand it can save frequently
The energy for starting loss, on the other hand can reduce the fluctuation of loading demand temperature, really realize fast-refrigerating, steady temperature control, section
The purpose of consumption can be saved.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature mesh of the invention
And advantage will become more apparent upon.
Fig. 1 is frequency conversion host coolant system structural schematic diagram of the present invention.
In figure:
1- compressor 2- second pressure sensor 3- condenser
4- first pressure sensor 5- expansion valve 6- evaporator
Electromechanical magnet valve 9- condensation fan in 7- evaporation fan 8-
The outer machine system 12- bypass solenoid valve of machine system 11- in 10-
13- unidirectional stop valve
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figure 1, frequency conversion host coolant system provided by the invention, including outer machine system 11 interconnected and interior machine
System 10；Wherein
Outer machine system 11 includes:
Compressor 1, the outlet of the import of compressor 1 and interior machine system 10；
Condenser 3, the import of condenser 3 and the outlet of compressor 1, outlet and the interior machine system 10 of condenser 3
Inlet communication；
Condensation fan 9, condensation fan 9 are matched with condenser 3；
The import of the outlet and interior machine system 10 that are connected to condenser 3 is arranged in unidirectional stop valve 13, unidirectional stop valve 13
On pipeline；
Bypass conduit, one end of bypass conduit and the outlet of condenser 3, the other end and compressor 1 of bypass conduit
Inlet communication；
Bypass solenoid valve 12, bypass solenoid valve 12 are arranged in bypass conduit.
Interior machine system 10 includes:
Evaporator 6, the import of evaporator 6 and the outlet of condenser 3, the outlet of evaporator 6 and the import of compressor 1
Connection；
The outlet and steaming of connection condenser 3 is arranged in interior electromechanics magnet valve 8 and expansion valve 5, interior electromechanics magnet valve 8 and expansion valve 5
On the pipeline for sending out the import of device 6；
Evaporation fan 7, evaporation fan 7 are matched with evaporator 6.
First pressure sensor 4 is equipped on the pipeline of the outlet of the import and evaporator 6 of connection compressor 1.
First pressure sensor 4 is low-pressure sensor.
Second pressure sensor 2 is equipped on the pipeline of the import of the outlet and condenser 3 of connection compressor 1.
Second pressure sensor 2 is high-pressure pressure sensor.
It is that outer 11 high pressure of machine system is defeated in the high-pressure mouth and the increased bypass circulation of low pressure port leading portion of frequency conversion host system
Partially it is divided into two circuits out, is directly connected all the way with the import of interior machine system 10, the direct low pressure with outer machine system of another way
Mouth docking.The low pressure port of outer machine system 11 is also required to two circuits simultaneously, and the outlet in a circuit and interior machine system 10 connects, separately
It is connected all the way with the bypass of high-pressure mouth.Simultaneously need on high pressure bypass circulation increase a bypass solenoid valve 12, with interior machine
Increase a unidirectional stop valve 13 on the low pressure line that system 10 connects, guarantees to enter when refrigerant flows back through bypass
Interior machine system 10.
In circuit control, increase measure loop all the way in outer machine system 11, when interior machine system 10 provides electromechanical magnetic in closing
When 8 signal of valve, outer machine system 11 is opened using signal triggering bypass solenoid valve 12, while by 1 frequency modulation of compressor to lowest frequency
Operating.When interior machine system 10 is again turned on solenoid valve 8, outer machine system 11 is closed using signal triggering bypass solenoid valve 12,
1 frequency of compressor is adjusted simultaneously carries out fast-refrigerating.So circulation, while guaranteeing frequency control, completely dispenses with and frequently opens
Stop compressor 1, to guarantee the stabilization and energy conservation of system.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (6)
1. a kind of frequency conversion host coolant system, which is characterized in that including outer machine system interconnected and interior machine system；Wherein
The outer machine system includes:
Compressor, the outlet of the import of the compressor and the interior machine system；
Condenser, the outlet of the import of the condenser and the compressor, the outlet of the condenser and the interior machine
The inlet communication of system；
Condensation fan, the condensation fan are matched with the condenser；
The outlet for being connected to the condenser and the import of the interior machine system is arranged in unidirectional stop valve, the unidirectional stop valve
On pipeline；
Bypass conduit, the outlet of one end of the bypass conduit and the condenser, the other end of the bypass conduit with
The inlet communication of the compressor；
Bypass solenoid valve, the bypass solenoid valve are arranged in the bypass conduit.
2. frequency conversion host coolant system according to claim 1, which is characterized in that the interior machine system includes:
Evaporator, the outlet of the import of the evaporator and the condenser, the outlet of the evaporator and the compression
The inlet communication of machine；
Interior electromechanics magnet valve and expansion valve, the interior electromechanical magnet valve and the expansion valve be arranged in the outlet for being connected to the condenser and
On the pipeline of the import of the evaporator；
Evaporation fan, the evaporation fan are matched with the evaporator.
3. frequency conversion host coolant system according to claim 2, which is characterized in that the import for being connected to the compressor with
The pipeline of the outlet of the evaporator is equipped with first pressure sensor.
4. frequency conversion host coolant system according to claim 3, which is characterized in that the first pressure sensor is low pressure
Pressure sensor.
5. frequency conversion host coolant system according to claim 2, which is characterized in that the outlet for being connected to the compressor with
The pipeline of the import of the condenser is equipped with second pressure sensor.
6. frequency conversion host coolant system according to claim 5, which is characterized in that the second pressure sensor is high pressure
Pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421180.5A CN109520162A (en) | 2018-11-27 | 2018-11-27 | Frequency conversion host coolant system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421180.5A CN109520162A (en) | 2018-11-27 | 2018-11-27 | Frequency conversion host coolant system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520162A true CN109520162A (en) | 2019-03-26 |
Family
ID=65794386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811421180.5A Pending CN109520162A (en) | 2018-11-27 | 2018-11-27 | Frequency conversion host coolant system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566455A (en) * | 2021-08-18 | 2021-10-29 | 深圳市蓝石环保科技有限公司 | Heat pump system, control method, electronic device, and evaporation processing system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462219A (en) * | 1981-05-13 | 1984-07-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Refrigeration system |
| CN1916529A (en) * | 2006-08-28 | 2007-02-21 | 四川长虹电器股份有限公司 | Composite refrigeration system |
| CN102147163A (en) * | 2011-03-28 | 2011-08-10 | Tcl空调器(中山)有限公司 | All-weather refrigerating plant and refrigerating mode control method thereof |
| CN102229340A (en) * | 2011-04-25 | 2011-11-02 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN106051984A (en) * | 2016-07-15 | 2016-10-26 | 珠海格力电器股份有限公司 | Air conditioning system with liquid bypass device |
| CN108224823A (en) * | 2018-02-12 | 2018-06-29 | 深圳市亿凌捷科技有限公司 | Full load air-conditioning device and its control method |
| CN108317760A (en) * | 2018-04-12 | 2018-07-24 | 合肥天鹅制冷科技有限公司 | Accurate temperature controlling refrigeration system |
-
2018
- 2018-11-27 CN CN201811421180.5A patent/CN109520162A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462219A (en) * | 1981-05-13 | 1984-07-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Refrigeration system |
| CN1916529A (en) * | 2006-08-28 | 2007-02-21 | 四川长虹电器股份有限公司 | Composite refrigeration system |
| CN102147163A (en) * | 2011-03-28 | 2011-08-10 | Tcl空调器(中山)有限公司 | All-weather refrigerating plant and refrigerating mode control method thereof |
| CN102229340A (en) * | 2011-04-25 | 2011-11-02 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN106051984A (en) * | 2016-07-15 | 2016-10-26 | 珠海格力电器股份有限公司 | Air conditioning system with liquid bypass device |
| CN108224823A (en) * | 2018-02-12 | 2018-06-29 | 深圳市亿凌捷科技有限公司 | Full load air-conditioning device and its control method |
| CN108317760A (en) * | 2018-04-12 | 2018-07-24 | 合肥天鹅制冷科技有限公司 | Accurate temperature controlling refrigeration system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566455A (en) * | 2021-08-18 | 2021-10-29 | 深圳市蓝石环保科技有限公司 | Heat pump system, control method, electronic device, and evaporation processing system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190326 |
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| RJ01 | Rejection of invention patent application after publication |