CN106871505B - A kind of refrigeration system and its refrigeration control method - Google Patents
A kind of refrigeration system and its refrigeration control method Download PDFInfo
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- CN106871505B CN106871505B CN201710076736.0A CN201710076736A CN106871505B CN 106871505 B CN106871505 B CN 106871505B CN 201710076736 A CN201710076736 A CN 201710076736A CN 106871505 B CN106871505 B CN 106871505B
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- compressor
- piston
- chamber
- refrigeration system
- condenser
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- 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
Abstract
The present invention relates to refrigeration technology fields, provide a kind of refrigeration system and its refrigeration control method.Wherein, refrigeration system includes the sequentially connected compressor of circulating direction, condenser, throttling set and the evaporator along refrigerant, and switch valve is provided between the port of export of the condenser and the arrival end of the evaporator.The refrigeration system; due to being provided with switch valve between the arrival end of the port of export of condenser and the evaporator; during so as to compressor shutdown; by disconnecting the switch valve; high-pressure side and the respective pressure of low-pressure end can be maintained, avoiding high pressure end pressure, thermal loss caused by reduction, refrigerant system efficiency reduce suddenly and power consumption increases.
Description
Technical field
The present invention relates to refrigeration technology field more particularly to a kind of refrigeration system and its refrigeration control methods.
Background technology
Current refrigerator refrigeration system substantially keeps the temperature inside the box by the startup-shutdown of compressor.When compressor stops
During machine, the pressure of high-pressure side (namely compressor outlet) reduces suddenly, and fraction refrigerant flash evapn simultaneously absorbs part heat
Amount, the heat that condenser distributes lead to that refrigerant system efficiency reduces and power consumption increases by refrigeration system offset itself.
On the other hand, when the compressor is shut down, the refrigerant of high-pressure side flows into low-pressure end (namely compressor by capillary
Input end), progressively reach the balance between high-pressure side and low-pressure end.When being switched on again, need again in high-pressure side and low pressure
Pressure difference is established between end to freeze.During pressure difference is established, compressor horsepower is larger, refrigerating efficiency is low and power consumption
It is high.
Invention content
The present invention is directed at least solve one of technical problem present in the prior art or the relevant technologies.
The present invention one of purpose be：A kind of refrigeration system and its refrigeration control method are provided, solve the prior art
Present in thermal loss caused by high pressure end pressure reduces suddenly during compressor shutdown, refrigerant system efficiency reduce and consume
Electricity increases.
In order to realize the purpose, the present invention provides a kind of refrigeration system, including the circulating direction along refrigerant successively
The arrival end of compressor, condenser, throttling set and the evaporator of connection, the port of export of the condenser and the evaporator it
Between be provided with switch valve.
Technical scheme of the present invention has the following advantages：The refrigeration system of the present invention, due to the port of export in condenser and
Switch valve is provided between the arrival end of the evaporator, thus during compressor shutdown, by disconnecting the switch valve, Ke Yiwei
High-pressure side and the respective pressure of low-pressure end are held, avoids high pressure end pressure thermal loss, refrigerant system efficiency caused by reduction suddenly
It reduces and power consumption increases.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the refrigerating circuit schematic diagram of the refrigeration system of embodiment；
Fig. 2-4 is the structure diagram of the getter device of embodiment；
Fig. 5 is the schematic cross-sectional view of the first cylinder body of getter device；
Fig. 6 is the schematic cross-sectional view of the second cylinder body of getter device；
The contrast schematic diagram of power when Fig. 7 is the booting power and normal operation of the refrigerator of the prior art；
The schematic diagram of power when Fig. 8 is the refrigerator booting power and normal operation using the present embodiment refrigeration system；
In figure：1st, compressor；2nd, condenser；3rd, throttling set；4th, evaporator；5th, switch valve；6th, filter device；7th, air-breathing
Device；8th, the first cylinder body；9th, first piston；10th, elastic component；11st, drive rod；12nd, the second cylinder body；13rd, second piston；14th, add
Hot device.
Specific embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the description of the present invention, it should be noted that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second ", " third " are only used for description purpose, and it is not intended that instruction or dark
Show relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can be machine
Tool is connected or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Refer to Fig. 1, the refrigeration system of the present embodiment, including being sequentially connected compressor 1, condensation to form refrigerating circuit
Device 2, throttling set 3 and evaporator 4 are provided with switch between the port of export of the condenser 2 and the arrival end of the evaporator 4
Valve 5.
The refrigeration system of the present embodiment, due to being set between the arrival end of the port of export of condenser 2 and the evaporator 4
There is switch valve 5, when being shut down so as to compressor 1, by disconnecting the switch valve 5, high-pressure side and low-pressure end can be maintained respective
Pressure, avoiding high pressure end pressure, thermal loss caused by reduction, refrigerant system efficiency reduce suddenly and power consumption increases.
Wherein, high-pressure side refers to the part between 1 port of export of switch valve 5 and compressor, low pressure in refrigerating circuit
End refers to the part in refrigerating circuit between 1 input end of switch valve 5 and compressor.
In addition, switch valve 5 preferably uses the form of solenoid valve, so as to convenient controller break-make according to demand.Specifically, work as
When compressor 1 is shut down, the solenoid valve is disconnected to maintain the pressure difference of high-pressure side and low-pressure end；And when compressor 1 is run, connecting should
Solenoid valve is to ensure the normal operation of refrigerating circuit.Certainly, switch valve 5 can also use any other shape other than solenoid valve
Formula.
In the present embodiment, throttling set 3 is arranged between above-mentioned switch valve 5 and evaporator 4.In addition, it in condenser 2 and opens
Filter device 6 is additionally provided between the valve 5 of pass.Wherein, throttling set 3 is preferably but necessarily using capillary.
On this basis, when compressor 1 turns back on, since high-pressure side and low-pressure end pressure difference are too big, so as to cause pressure
Contracting machine 1 can not normally start.In view of this, the present embodiment is provided with getter device 7 in the port of export of compressor 1, for adjusting
The pressure value of 1 port of export of compressor, so as to adjust high-pressure side pressure value.When compressor 1 needs to turn back on, using suction
The gas that device of air 7 draws high-pressure side makes compressor 1 normally start.
The getter device 7 of the present embodiment, refers to Fig. 2-4, and including the first cylinder body 8, first cylinder body 8 is by first piston
9 points be first chamber and second chamber, is provided with elastic component 10 in the first chamber and is connect with the first piston 9
Drive rod 11, and the drive rod 11 drive the first piston 9 towards the first chamber side move when, described first
Piston 9 compresses the elastic component 10；The second chamber is connected with the port of export of the compressor 1.
When needing to suck gas from 1 port of export of compressor, in Fig. 3 drive rod 11 with piston towards left movement so that system
A part of gas in cold loop is entered in second chamber, until the relationship between high-pressure side air pressure and low-pressure end air pressure meets
Sets requirement.
Wherein, although the circular in cross-section of the cylinder body provided in Fig. 4, but it is to be understood that the structure of cylinder body in attached drawing 4
The limitation to cylinder body in the present embodiment is not formed, the cross section of cylinder body can rectangular, oval, triangle etc. in the present embodiment
Arbitrary shape.
Please with further reference to Fig. 5, the elasticity set in the first chamber is spring, and the spring one end connects the first cylinder body
8 side walls, other end connection first piston 9.When second chamber sucks gas from refrigerating circuit, first piston 9 is towards left movement
Compress the spring；When after the startup of compressor 1 and when refrigeration system starts normal operation, spring restores former growth process and pushes work
Plug re-injects into the gas sucked in second chamber in refrigerating circuit towards right movement.Certainly, elastic component 10 can also be adopted
With the other forms other than spring, as long as piston motion can be driven to re-inject into gas in refrigerating circuit.
In order to enable drive rod 11 can drive first piston 9 to move, then 11 one end of drive rod connection described first is lived
Plug 9, other end connection power unit.
In the present embodiment, preferably but necessarily drive rod 11 is U-shaped bar.
Further, the power unit of the present embodiment, refers to Fig. 6, including the second cylinder body 12,12 quilt of the second cylinder body
Second piston 13 is divided for third chamber and the 4th chamber, and thermal expansion object and heater 14 are provided in the 4th chamber；Institute
Heater 14 is stated for heating the thermal expansion object so that during the thermal expansion object expanded by heating, driving described second is lived
Plug 13 is moved towards the third chamber side.On this basis, one end connection first piston 9 of U-shaped bar, the other end passes through
Second piston 13 is connected after third chamber.
As can be known from Fig. 6, third chamber is located at the left side of the 4th chamber, and combines Fig. 3 it is found that the both ends point of U-shaped bar
The third chamber in 12 left side of first chamber and the second cylinder body in 8 left side of the first cylinder body is not connected.So as to the heat in the 4th cavity
When expanding object expansion, second piston 13 drives U-shaped bar towards left movement, and then U-shaped bar drives first piston 9 towards left movement, complete
Into breathing process.After breathing process, stop heating thermal expansion object in the 4th chamber, make at this time in spring restoring force
Under, first piston 9 drives U-shaped bar towards right movement, so as to which the gas in second chamber is re-injected into refrigerating circuit.
Wherein, the gas that second chamber is sucked from refrigerating circuit is the condensing agent in refrigerating circuit.In addition, thermal expansion object
The type form of body and heater 14 is all unrestricted, for example, the liquid that heating easily vaporizes may be used in thermal expansion object, and adds
Electric heating wire may be used in hot device 14.
It should be noted that the power unit being connect in the present embodiment with drive rod 11, is not limited to that in the present embodiment
Form.For example, it is also possible to drive rod 11 is connected either with motor by drive rod 11 and cylinder or hydraulic cylinder etc..
It should be noted that in order to enable compressor 1 works normally, the pressure difference between high-pressure side and low-pressure end is necessary
's.And in the present embodiment, although the setting of getter device 7 is the pressure difference in order to reduce high-pressure side and low-pressure end, due to it
Gas in refrigerating circuit is reduced, so as to when re-establishing pressure difference, not need to 1 high power operation of compressor, so as to
Save electricity.
Fig. 7 and Fig. 8 are further referred to, by taking the operation of the refrigeration system in refrigerator as an example, switch valve 5 and air-breathing dress are set
Before putting 7, the booting high 16W of power ratio normal operation of refrigerator, after increasing solenoid valve, the booting power ratio normal operation of refrigerator is high
3W so as to which the effect of switch valve 5 and getter device 7 is apparent, can cause energy consumption to reduce by 6% or so.Certainly, the system of the present embodiment
Cooling system is not only applicable to refrigerator, can be applicable to any other production including refrigeration system such as air-conditioning, water heater
In product.
Further, the present embodiment provides a kind of control method of refrigeration system, include the following steps：
Receive 1 run signal of compressor；
When 1 run signal of compressor is 1 stopping signal of compressor, the pipe between condenser 2 and evaporator 4 is disconnected
Road so that the port of export and input end of compressor 1 maintain pressure difference；
When the compression run signal is 1 starting-up signal of compressor, proceed as follows：
The refrigerant of 1 port of export of compressor is absorbed, and detects the refrigeration dose in refrigerating circuit；
When the refrigeration dose in refrigerating circuit reaches set amount, the pipeline connected between condenser 2 and evaporator 4 is to open
Dynamic compressor 1；
After compressor 1 starts, 1 run signal of compressor is normally freezed for compressor 1, then into refrigerating circuit
Inject refrigerant.
Wherein, the refrigerant for absorbing 1 port of export of compressor includes：
Cylinder body is connected in 1 port of export of compressor,
Piston in drivig cylinder is the refrigerant in refrigerating circuit is drawn into cylinder body；
The refrigerant that injected into refrigerating circuit includes：Driving piston is freezed back so that the refrigerant in cylinder body is injected into
Lu Zhong.
Embodiment of above is merely to illustrate the present invention rather than limitation of the present invention.Although with reference to embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that, to technical scheme of the present invention carry out it is various combination,
Modification or equivalent replacement, without departure from the spirit and scope of technical solution of the present invention, the right that should all cover in the present invention is wanted
It asks in range.
Claims (8)
1. a kind of refrigeration system, including being sequentially connected compressor, condenser, throttling set and evaporation to form refrigerating circuit
Device, which is characterized in that be provided with switch valve between the arrival end of the port of export of the condenser and the evaporator；The compression
The port of export of machine is provided with getter device, for adjusting the pressure value of the compressor outlet；The getter device includes the
One cylinder body, first cylinder body are divided into first chamber and second chamber by first piston, are set in the first chamber flexible
Part and the drive rod being connect with the first piston, and the drive rod drives the first piston towards the first chamber institute
When being moved in side, the first piston compresses the elastic component；The second chamber is connected with the port of export of the compressor.
2. refrigeration system according to claim 1, which is characterized in that described drive rod one end connects the first piston,
The other end connects power unit.
3. refrigeration system according to claim 2, which is characterized in that the drive rod is U-shaped bar.
4. refrigeration system according to claim 3, which is characterized in that the power unit includes the second cylinder body, and described the
Two cylinder bodies are divided into third chamber and the 4th chamber by second piston, and thermal expansion object and heating are provided in the 4th chamber
Device；The heater is used to heat the thermal expansion object so that during the thermal expansion object expanded by heating, driving described second
Piston is moved towards the third chamber side；One end of the U-shaped bar connects the first piston, and the other end passes through described
The second piston is connected after third chamber.
5. refrigeration system according to claim 1, which is characterized in that the switch valve is solenoid valve, in the compressor
It disconnects during shutdown, is connected in the compressor operating.
6. refrigeration system according to claim 1, which is characterized in that the throttling set is set to the switch valve and institute
Between stating evaporator, filter device is additionally provided between the condenser and the switch valve.
7. a kind of control method of refrigeration system, which is characterized in that include the following steps：
Receive compressor operating signal；
When the compressor operating signal is compressor shutdown signal, the pipeline between condenser and evaporator is disconnected so that
The port of export and input end of compressor maintain pressure difference；
When the compression run signal is compressor starting-up signal, proceed as follows：
The refrigerant of compressor outlet is absorbed, and detects the refrigeration dose in refrigerating circuit；
When the refrigeration dose in refrigerating circuit reaches set amount, the pipeline connected between condenser and evaporator is compressed with starting
Machine；
After compressor start, the compressor operating signal normally freezes for compressor, then system is injected into refrigerating circuit
Cryogen.
8. the method according to the description of claim 7 is characterized in that
The refrigerant for absorbing compressor outlet includes：
Cylinder body is connected in compressor outlet,
Piston in drivig cylinder is the refrigerant in refrigerating circuit is drawn into cylinder body；
The refrigerant that injected into refrigerating circuit includes：Drive piston that the refrigerant in cylinder body is injected into refrigerating circuit
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710076736.0A CN106871505B (en) | 2017-02-13 | 2017-02-13 | A kind of refrigeration system and its refrigeration control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710076736.0A CN106871505B (en) | 2017-02-13 | 2017-02-13 | A kind of refrigeration system and its refrigeration control method |
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| Publication Number | Publication Date |
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| CN106871505A CN106871505A (en) | 2017-06-20 |
| CN106871505B true CN106871505B (en) | 2018-06-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088295A (en) * | 1990-07-30 | 1992-02-18 | Carrier Corporation | Air conditioner with dehumidification mode |
| CN2213241Y (en) * | 1993-06-26 | 1995-11-22 | 倪建国 | Unloading starter for refrigeration compression engine |
| CN2463627Y (en) * | 2000-11-09 | 2001-12-05 | 田光荣 | Protective valve for compressor |
| CN2490514Y (en) * | 2001-04-13 | 2002-05-08 | 伊莱克斯中意（长沙）电冰箱有限公司 | Domestic energy-saving refrigeration device with check valve |
| CN106369856A (en) * | 2016-10-31 | 2017-02-01 | 合肥华凌股份有限公司 | Refrigeration device |
-
2017
- 2017-02-13 CN CN201710076736.0A patent/CN106871505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088295A (en) * | 1990-07-30 | 1992-02-18 | Carrier Corporation | Air conditioner with dehumidification mode |
| CN2213241Y (en) * | 1993-06-26 | 1995-11-22 | 倪建国 | Unloading starter for refrigeration compression engine |
| CN2463627Y (en) * | 2000-11-09 | 2001-12-05 | 田光荣 | Protective valve for compressor |
| CN2490514Y (en) * | 2001-04-13 | 2002-05-08 | 伊莱克斯中意（长沙）电冰箱有限公司 | Domestic energy-saving refrigeration device with check valve |
| CN106369856A (en) * | 2016-10-31 | 2017-02-01 | 合肥华凌股份有限公司 | Refrigeration device |
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| Publication number | Publication date |
|---|---|
| CN106871505A (en) | 2017-06-20 |
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