CN205980563U - Plasma quick -frozen machine refrigerating system - Google Patents
Plasma quick -frozen machine refrigerating system Download PDFInfo
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- CN205980563U CN205980563U CN201620644045.7U CN201620644045U CN205980563U CN 205980563 U CN205980563 U CN 205980563U CN 201620644045 U CN201620644045 U CN 201620644045U CN 205980563 U CN205980563 U CN 205980563U
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- valve
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- quick freezing
- plasma quick
- machine cooling
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Abstract
The utility model provides a plasma quick -frozen machine refrigerating system, the liquid storage pot, a drying filter, intercooler, refrigeration solenoid valve and for the expansion valve refrigerant line connect the back in order and establish ties with the refrigerant line for the entry of lower evaporimeter with parallelly connected last evaporimeter, parallelly connected last evaporimeter and the export of time evaporimeter in order with vapour and liquid separator, double stage compressor, oil separator, condensers, the refrigerant line is established ties for the liquid storage pot, the last heat exchanger of being equipped with of vapour and liquid separator and make vapour and liquid separator and the intermediate layer between form the cavity, double stage compressor, oil separator, the solenoid valve, the cavity, first filter, the capillary, double stage compressor establishes ties into the return circuit. The utility model discloses a can adjust the biggest refrigerating output state to the expansion valve among the plasma quick -frozen machine refrigerating system and be beneficial to the refrigeration efficiency maximize, the liquid hammer leads to the fact the compressor to damage when also can prevent the defrosting simultaneously, reaches the effect that can avoid appearing the liquid hammer phenomenon when guaranteeing refrigeration efficiency effectively.
Description
【Technical field】
This utility model is related to blood plasma quick freezer field, more particularly, to a kind of plasma quick freezing machine cooling system.
【Background technology】
Blood plasma quick freezer is the important way of medical treatment during clinical blood transfusion.Variation with medical procedure and advanced
Change, blood transfusion mode is progressively developed into the mode according to the defeated component blood of sick human needs by the mode of defeated whole blood in the past.Component blood transfusion
Shi Tigao blood use safety and the main path of economy.In order to ensure plasma purity it is desirable to must be 6 to 8 hours after blood sampling
Interior isolate blood plasma quick-freezing in bulk at low temperature from whole blood, the equipment of preparation fresh frozen plasma has multiple, but mainly sets
Standby is special blood plasma quick freezer.
At present, conventional refrigeration system in blood plasma quick freezer is single refrigeration modes, or passes through four-way Vavle switching
Heat.In the blood plasma quick freezer using Two-stage Compression system, in order to improve evaporation efficiency and during defrosting, gas-liquid separator is because of system
Cold finisher has residual liquid cold-producing medium, liquid hit phenomenon occurs in the defrosting starting stage, causes the liquid hammer accident of compressor.
Because the zero load of Flat fast-freezer and fully loaded and defrosting form particularity, in order to solve liquid hit phenomenon
Problem, is found by controlling the test of return-air：If when unloaded turning expansion valve down, there is refrigerating capacity during load will suppress, reaching
Less than preferable quick-freezing effect；If expansion valve is adjusted excessive (can not produce liquid hammer when controlling refrigeration again), during defrosting just
Occur there is liquid hit phenomenon.
【Utility model content】
In view of this, for overcoming the deficiencies in the prior art it is necessary to provide a kind of plasma quick freezing machine cooling system, ensureing
Can be effectively prevented from while refrigeration that liquid hit phenomenon occurs.
The technical solution of the utility model is：A kind of plasma quick freezing machine cooling system, including fluid reservoir (1), dry filter
Device (2), intercooler (4), refrigeration electromagnetic valve (7), expansion valve (8), upper vaporizer (9), lower vaporizer (10), gas-liquid separation
Device (13), oil eliminator (14) and condenser (16)；Described fluid reservoir (1), described device for drying and filtering (2), described intercooling
Device (4), described refrigeration electromagnetic valve (7) and described expansion valve (8) refrigerant line be sequentially connected with after with described upper steaming in parallel
The entrance sending out device (9) and described lower vaporizer (10) is connected with refrigerant line, the described upper vaporizer (9) of parallel connection and described under
The outlet of vaporizer (10) sequentially with described gas-liquid separator (13), double-stage compressor (15), described oil eliminator (14), described
Condenser (16), described fluid reservoir (1) are connected with refrigerant line, and described gas-liquid separator (13) is provided with heat exchanger and makes
Described gas-liquid separator (13) forms cavity, described double-stage compressor (15), described oil eliminator (14), electromagnetic valve and between interlayer
(19), described cavity, the first filter (31), capillary tube (32), described double-stage compressor (15) are connected into loop.
Preferably, the return air inlet of described gas-liquid separator (13) is provided with temperature sensor, described temperature sensor
The temperature detecting opens described electromagnetic valve (19) when being less than design temperature.
Preferably, described design temperature is -18 DEG C.
Preferably, described plasma quick freezing machine cooling system also includes air-breathing pressure regulator valve (18), described air-breathing pressure regulator valve
(18) it is arranged between described gas-liquid separator (13) and described compressor (15), from described gas-liquid separator (13) gas out
State cold-producing medium is delivered to the low-pressure inlet of described compressor (15) after the pressure regulation of described air-breathing pressure regulator valve (18).
Preferably, described expansion valve (8) is outer balanced type heating power expansion valve, described expansion valve temperature-sensitive bag (11) setting
The exit of vaporizer (9) and described lower vaporizer (10) on described, described expansion valve temperature-sensitive bag (11) controls described expansion
The open degree of valve (8).
Preferably, described device for drying and filtering (2) is connected with the side of described intercooler (4) and is formed first via system
Cryogen flow to, described device for drying and filtering (2), the second filter (28), economizer electromagnetic valve (29), jetting liquid valve (30) with described
The second road refrigerant flow direction is constituted after the opposite side series connection of intercooler (4).
Preferably, described plasma quick freezing machine cooling system also includes liquid-sighting glass (3), and described liquid-sighting glass (3) is arranged on
Between described device for drying and filtering (2) and described intercooler (4).
Preferably, described plasma quick freezing machine cooling system also includes the first valve (5), copper filter screen (6), and described first
Valve (5) and described copper filter screen (6) are successively set between described intercooler (4) and described refrigeration electromagnetic valve (7).
Preferably, described plasma quick freezing machine cooling system also includes the second valve (12), described second valve (12)
It is arranged between the described upper vaporizer (9) of parallel connection and described lower vaporizer (10) outlet and described gas-liquid separator (13).
Preferably, described plasma quick freezing machine cooling system also includes condenser fan (17), described condenser fan (17)
It is arranged on described condenser (16) other.
The beneficial effects of the utility model are：In plasma quick freezing machine cooling system of the present utility model, from the row of compressor
The high temperature refrigerant through oil eliminator for the gas can be squeezed in the cavity of gas-liquid separator to the heating of gas-liquid separator return-air, then warp again
First filter and capillary tube return to compressor and constitute loop, thus causing the liquid refrigeration separately not finished in gas-liquid separator
Agent flashes to gaseous refrigerant as far as possible so that liquid refrigerant reduces, accordingly even when refrigeration finishes horse back defrosting and there will not be liquid
Hit phenomenon to occur.Expansion valve can be adjusted to maximum cooling capacity state in plasma quick freezing machine cooling system of the present utility model
It is beneficial to refrigerating efficiency to maximize, also can prevent liquid hammer when defrosting from causing compressor damage simultaneously, reach and ensureing refrigeration effect
The effect that liquid hit phenomenon occurs can be effectively prevented from while rate.
【Brief description】
The structural representation of the plasma quick freezing machine cooling system that Fig. 1 is provided by preferred embodiment of the present utility model.
【Specific embodiment】
For more fully understanding this utility model, below with reference to accompanying drawing and instantiation, utility model is carried out specifically
Bright.
Refer to Fig. 1, provide a kind of plasma quick freezing machine cooling system in preferred embodiment of the present utility model, including liquid storage
Tank 1, device for drying and filtering 2, liquid-sighting glass 3, intercooler 4, the first valve 5, copper filter screen 6, refrigeration electromagnetic valve 7, expansion valve 8, on
Cold drawing (upper vaporizer) 9, lower cold drawing (lower vaporizer) 10, second valve 12, gas-liquid separator 13, oil eliminator 14, twin-stage pressure
Contracting machine 15, condenser 16 and condenser fan 17.
Wherein, fluid reservoir 1, device for drying and filtering 2, liquid-sighting glass 3, intercooler 4, the first valve 5, copper filter screen 6, refrigeration electricity
Magnet valve 7 and expansion valve 8 are sequentially connected with refrigerant line, and (steam down with upper cold drawing (going up vaporizer) 9 in parallel and lower cold drawing
Send out device) 10 arrival end refrigerant line connects.Upper cold drawing (upper vaporizer) 9 in parallel and lower cold drawing (lower vaporizer) 10
Port of export end sequentially with the second valve 12, gas-liquid separator 13, double-stage compressor 15, oil eliminator 14, condenser 16, fluid reservoir
1 is connected with refrigerant line.So, plasma quick freezing machine cooling system forms refrigerant circulation loop.
Fluid reservoir 1 is used for storing liquid refrigerant it is ensured that when cooling condition occurs acute variation, can store certain
Cold-producing medium, thus stabilisation systemss pressure, and ensure the full liquid supply of throttling arrangement.
Device for drying and filtering 2 is dried to the cold-producing medium of output from fluid reservoir 1 simultaneously and filters.
Liquid-sighting glass 3 is used for monitoring refrigerant line, determines quality and the water content of refrigeration system inner refrigerant.
Intercooler 4 cools down to the cold-producing medium flowing through refrigerant line.From device for drying and filtering 2 cold-producing medium out
It is divided into two-way and flow through intercooler 4.Device for drying and filtering 2 and intercooler 4 left-half first via cold-producing medium in series.
Second filter 28, electromagnetic valve 29, jetting liquid valve 30 constitute the second tunnel refrigeration with the right half part of intercooler 4 after connecting
Agent.First and second road cold-producing medium separates, afterwards respectively from the first valve 5 and centre after carrying out cold and hot exchange in intercooler 4
The pipeline of the upper right portion of cooler 4 flows out.
First valve 5, copper filter screen 6, refrigeration electromagnetic valve 7 are series relationship.First valve 5 can cut off refrigerator pipes for during maintenance
Cold-producing medium in road.Copper filter screen 6 filters to the cold-producing medium flowing through.Refrigeration electromagnetic valve 7 is the feed flow controlling to expansion valve 8
Open and close.
Reach after intercooler 4 cold-producing medium out is by the first valve 5, copper filter screen 6, refrigeration electromagnetic valve 7 and expand
Valve 8.
Expansion valve 8 is outer balanced type heating power expansion valve, and its refrigerant outlet passes through refrigerant line and upper cold drawing in parallel
(upper vaporizer) 9 is connected with the entrance of lower cold drawing (lower vaporizer) 10.In figure curve represents connection expansion valve 8 and expansion valve temperature-sensitive
The balance pipe of bag 11.The temperature-sensitive bag 11 of expansion valve 8 is arranged on vaporizer 9 and the exit of lower vaporizer 10, and expansion valve 8 is by swollen
Swollen valve temperature-sensitive bag 11 is controlling open degree.
The refrigerant outlet of upper cold drawing (upper vaporizer) 9 and lower cold drawing (lower vaporizer) 10 by the second valve 12 connect to
Gas-liquid separator 13.
Gas-liquid separator 13 is the return-air formula gas-liquid separator of jacketed, and it is isolated liquid refrigerant and ensures to return to pressure
Contracting machine 15 is gaseous refrigerant.Gaseous refrigerant, after air-breathing pressure regulator valve 18 pressure regulation, is delivered to the low of double-stage compressor 15
Press-in mouth.First filter 31 in gas-liquid separator 13 left side and capillary tube 32 are connected, the work of 32 throttlings of capillary tube and evaporation
With the first filter 31 acts the effect filtered.When there is a small amount of liquid refrigerant in the chuck of gas-liquid separator 13, by
One filter 31 filters, then throttles through capillary tube 32 and evaporate so as to be changed into gaseous refrigerant to return compressor 15.
Double-stage compressor 15 has two stages of compression cylinder, and one is primary compression chamber, and one is advanced compression chamber, both pressures
Contracting has a ratio.Low-pressure gaseous refrigerant is introduced into primary compression chamber, enters back into senior after being compressed to intermediate pressure wherein
Compression chamber, compresses it condensing pressure and is condensed into liquid refrigerant.
Oil eliminator 14 is used for isolating lubricating oil.Contain lubricating oil from double-stage compressor 15 cold-producing medium out.Enter
After entering oil eliminator 14, by centrifugal force and gravity, lubricating oil is separated from cold-producing medium.The profit that oil eliminator 14 is isolated
Lubricating oil can be vented back in double-stage compressor 5 by handss valve 22.
After condenser 16 condenses to cold-producing medium, that is, it is delivered in fluid reservoir 1.
Condenser fan 17 radiates to condenser 16.
Valve employed in above-mentioned plasma quick freezing machine cooling system is more, for ease of understanding, at this, valve is entered
Row special instruction：First valve 5, the second valve 12, the 3rd valve 24 are ball valve, are not actually involved in refrigeration system, for being easy to
Install and overhaul；Handss valve 21, handss valve 22 is actual is not involved in refrigeration system, uses for easy access；Defrosting electromagnetic valve 26 is only melting
Open when white, meanwhile refrigeration electromagnetic valve 7 cuts out with economizer electromagnetic valve 29.
By above description, the operation principle of plasma quick freezing machine cooling system of the present utility model carries out as follows：
When plasma quick freezing machine cooling system is freezed, the cold-producing medium from fluid reservoir 1 passes sequentially through device for drying and filtering
2nd, liquid-sighting glass 3, intercooler 4, the first valve 5, copper filter screen 6, refrigeration electromagnetic valve 7, expansion valve 8, upper vaporizer 9 and lower evaporation
After device 10, the second valve 12, gas-liquid separator 13, double-stage compressor 15, oil eliminator 14, condenser 16, it is back to fluid reservoir
1, form cooling cycle system.In process of refrigerastion, the trend of cold-producing medium is as shown in the arrow on pipeline in Fig. 1.
When plasma quick freezing machine cooling system carries out defrosting, pass is controlled to close vaporizer 9 and lower steaming by the electromagnetic valve 7 that freezes
Send out device 10 entrance, first the refrigerant cycle in vapo(u)rization system is fully opened defrosting electromagnetic valve 26 after several times again and carry out at defrosting
Reason.
During defrosting, refrigeration electromagnetic valve 7 cuts out, and defrosting electromagnetic valve 26 is opened.Cold-producing medium is from double-stage compressor 15
High-voltage tube out enters oil eliminator 14 afterwards, and wherein one road cold-producing medium reaches defrosting electromagnetic valve 26, check valve through the 3rd valve 24
27, then enter from upper and lower vaporizer 9 in parallel, 10 entrances, through the after the outlet out of upper and lower vaporizer 9,10 in parallel
Reach in gas-liquid separator 13 after two valves 12, then return to double-stage compressor 15 from low-voltage tube through suction modulation 18.
When the suction temperature that the temperature sensor 33 on compressor 15 return-air valve detects in gas-liquid separator 13 is less than certain
During design temperature, electromagnetic valve 19 is opened so that an other road cold-producing medium enters for wrapping up gas-liquid separator through electromagnetic valve 19
In 13 chuck, so that liquid refrigerant therein is reduced after carrying out heat exchange in the chuck of gas-liquid separator 13, make afterwards
Cryogen from the chuck of gas-liquid separator 13 out pass sequentially through afterwards filter 31, capillary tube 32 and enter compressor 15.Here,
Certain design temperature that suction temperature in gas-liquid separator 13 is less than, can be configured according to temperature sensor 15 position, its mesh
Be return-air is gasified totally after return to and while compressor 15, control suction temperature unsuitable too high again.This design temperature can set
It is set to -18 DEG C.
Compared with prior art, plasma quick freezing machine cooling system of the present utility model at least has the characteristics that and innovates：
(1) increased chuck on gas-liquid separator 13 so that between gas-liquid separator 13 and chuck formed cavity, so from
The high temperature refrigerant through oil eliminator 14 for the aerofluxuss of compressor 15 can be squeezed in this cavity, to the heating of gas-liquid separator 13 return-air,
Then return to compressor 15 through filter 31 and capillary tube 32 again and constitute loop, loop to control break-make by electromagnetic valve 19, in pressure
The gas returning port mounting temperature sensor 33 of contracting machine 15, controls suction temperature so that return-air cold-producing medium is fully gasified；
(2) after refrigeration, cold drawing (upper vaporizer 9 and lower vaporizer 10), returning in compressor 15 are directly introduced exhaust gas into
Install air-breathing pressure regulator valve (air-breathing pressure regulator valve 18) before air valve additional and produce standby pressure, reach cold drawing (upper vaporizer 9 He by this form
Lower vaporizer 10) defrosting；
(3) in refrigeration, when the temperature sensor 33 on compressor 15 return-air valve detects the return-air in gas-liquid separator
When temperature is too low, the electromagnetic valve 19 before gas-liquid separator 13 automatically turns on, and aerofluxuss and return-air are for wrapping up gas-liquid separator 13
Chuck in carry out heat exchange, so that suction temperature is controlled in a certain temperature range, thus causing in gas-liquid separator 13 not
Separate the liquid refrigerant finishing and flash to gaseous refrigerant so that liquid refrigerant reduces as far as possible；
(4) in the same manner, when defrosting starts, aerofluxuss and return-air carry out heat exchange in gas-liquid separator 13 so that liquid system
Cryogen gasifies, then aerofluxuss is passed through completely vaporizer (upper vaporizer 9 and lower vaporizer 10) defrosting, accordingly even when refrigeration finishes horse
Upper defrosting there will not be liquid hit phenomenon to be occurred.
So, expansion valve can be adjusted to maximum cooling capacity shape in plasma quick freezing machine cooling system of the present utility model
State is beneficial to refrigerating efficiency and maximizes, and also can prevent liquid hammer when defrosting from causing double-stage compressor to damage simultaneously, reach and ensureing
The effect that liquid hit phenomenon occurs can be effectively prevented from while refrigerating efficiency.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that it is common for this area
For technical staff, without departing from the concept of the premise utility, some deformation can also be made and improve, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of plasma quick freezing machine cooling system, including fluid reservoir (1), device for drying and filtering (2), intercooler (4), refrigeration electricity
Magnet valve (7), expansion valve (8), upper vaporizer (9), lower vaporizer (10), gas-liquid separator (13), oil eliminator (14) and condensation
Device (16) it is characterised in that：Described fluid reservoir (1), described device for drying and filtering (2), described intercooler (4), described refrigeration
Electromagnetic valve (7) and described expansion valve (8) refrigerant line be sequentially connected with after with described upper vaporizer (9) in parallel and described under
The entrance of vaporizer (10) is connected with refrigerant line, the going out of described upper vaporizer (9) in parallel and described lower vaporizer (10)
Mouth sequentially with described gas-liquid separator (13), double-stage compressor (15), described oil eliminator (14), described condenser (16), institute
State the series connection of fluid reservoir (1) refrigerant line, described gas-liquid separator (13) is provided with heat exchanger and makes described gas-liquid separation
Device (13) forms cavity, described double-stage compressor (15), described oil eliminator (14), electromagnetic valve (19), described chamber and between interlayer
Body, the first filter (31), capillary tube (32), described double-stage compressor (15) are connected into loop.
2. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described gas-liquid separator (13) return
Gas entrance is provided with temperature sensor, and the temperature that described temperature sensor detects opens described electromagnetic valve when being less than design temperature
(19).
3. plasma quick freezing machine cooling system according to claim 2 it is characterised in that：Described design temperature is -18 DEG C.
4. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described plasma quick freezing machine cooling system
Also include air-breathing pressure regulator valve (18), described air-breathing pressure regulator valve (18) is arranged on described gas-liquid separator (13) and described compressor
(15), between, conveyed after the pressure regulation of described air-breathing pressure regulator valve (18) from described gas-liquid separator (13) gaseous refrigerant out
Low-pressure inlet to described compressor (15).
5. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described expansion valve (8) is outer balance
Formula heating power expansion valve, described expansion valve temperature-sensitive bag (11) is arranged on going out of described upper vaporizer (9) and described lower vaporizer (10)
At mouthful, described expansion valve temperature-sensitive bag (11) controls the open degree of described expansion valve (8).
6. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described device for drying and filtering (2) and institute
The side series connection stating intercooler (4) forms first via refrigerant flow direction, described device for drying and filtering (2), the second filter
(28) constitute second after, economizer electromagnetic valve (29), jetting liquid valve (30) are connected with the opposite side of described intercooler (4)
Road refrigerant flow direction.
7. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described plasma quick freezing machine cooling system
Also include liquid-sighting glass (3), described liquid-sighting glass (3) is arranged between described device for drying and filtering (2) and described intercooler (4).
8. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described plasma quick freezing machine cooling system
Also include the first valve (5), copper filter screen (6), described first valve (5) and described copper filter screen (6) are successively set on described centre
Between cooler (4) and described refrigeration electromagnetic valve (7).
9. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described plasma quick freezing machine cooling system
Also include the second valve (12), described second valve (12) is arranged on the described upper vaporizer (9) of parallel connection and described lower vaporizer
(10) between outlet and described gas-liquid separator (13).
10. plasma quick freezing machine cooling system according to claim 1 it is characterised in that：Described plasma quick freezing mechanism cold system
System also includes condenser fan (17), and it is other that described condenser fan (17) is arranged on described condenser (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644045.7U CN205980563U (en) | 2016-06-24 | 2016-06-24 | Plasma quick -frozen machine refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644045.7U CN205980563U (en) | 2016-06-24 | 2016-06-24 | Plasma quick -frozen machine refrigerating system |
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| Publication Number | Publication Date |
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| CN205980563U true CN205980563U (en) | 2017-02-22 |
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ID=58021425
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620644045.7U Active CN205980563U (en) | 2016-06-24 | 2016-06-24 | Plasma quick -frozen machine refrigerating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972933A (en) * | 2016-06-24 | 2016-09-28 | 武汉贝索医疗器械有限公司 | Refrigerating system of blood plasma rapid freezer |
| CN108679890A (en) * | 2018-07-23 | 2018-10-19 | 珠海格力电器股份有限公司 | Heat pump circulation system for composite defrosting and operation method |
-
2016
- 2016-06-24 CN CN201620644045.7U patent/CN205980563U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972933A (en) * | 2016-06-24 | 2016-09-28 | 武汉贝索医疗器械有限公司 | Refrigerating system of blood plasma rapid freezer |
| CN108679890A (en) * | 2018-07-23 | 2018-10-19 | 珠海格力电器股份有限公司 | Heat pump circulation system for composite defrosting and operation method |
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